Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Storage battery or accumulator

Subclass of:

307 - Electrical transmission or interconnection systems

307043000 - PLURAL SUPPLY CIRCUITS OR SOURCES

307064000 - Substitute or emergency source

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
307067000 With intervening dynamoelectric machine 1
20090021078Direct-Coupled IT Load - Apparatus and associated method and computer program products involve a highly efficient uninterruptible power distribution architecture to support modular processing units. As an illustrative example, a modular processing unit includes an integrated uninterruptible power system in which a PFC-boost AC-to-DC conversion occurs between the utility AC grid and the processing circuit (e.g., microprocessor) loads. In an illustrative data center facility, a power distribution architecture includes a modular array of rack-mountable processing units, each of which has processing circuitry to handle network-related processing tasks. Associated with each modular processing unit is an integrated uninterruptible power supply (UPS) to supply operating power to the network processing circuitry. Each UPS includes a battery selectively connectable across a DC bus, and a AC-to-DC rectifier that converts an AC input voltage to a single output voltage on the DC bus. The regulated DC bus voltage may be close to the battery's fully charged voltage.01-22-2009
Entries
DocumentTitleDate
20110175452POWER SUPPLY DEVICE AND METHOD OF CONTROLLING THE SAME - A power supply device includes a power conversion circuit, a secondary battery, a table, and a control circuit. The power conversion circuit converts alternating-current or direct-current power into direct-current power to supply power to a load. The secondary battery is connected between the power conversion circuit and the load and charged with power from the power conversion circuit so that power is supplied to the load when the charging power is discharged. On the table, power conversion efficiency of the power conversion circuit associated with output power and charging efficiency of the secondary battery associated with charging power are recorded. The control circuit looks up the table to calculate power loss, which is based on the power conversion efficiency of the power conversion circuit associated with the output power in the case where power is supplied from the power conversion circuit to the load, and power loss, which is based on the charging efficiency of the secondary battery associated with the charging power in the case where power is output from the power conversion circuit so that the power conversion efficiency is at the highest level and the secondary battery is charged with extra power that is left after power is supplied to the load, makes a determination, on the basis of both the calculated power losses, as to whether the supply of power from the secondary battery to the load leads to a smaller power loss, makes a determination, when the supply of power from the secondary battery to the load leads to a smaller power loss, as to whether there is a remaining capacity in the secondary battery, and performs a control process, when there is no remaining capacity in the secondary battery, so that power is supplied from the power conversion circuit to the load and the secondary battery is charged for a predetermined period of time.07-21-2011
20130088084Networklized DC Power System - A networklized DC power system includes: a micro DC grid, and a plurality of energy routers connected to the micro DC grid. Each of energy routers includes a controlling module for controlling the energy router. A DC receiving port is coupled for receiving DC power from at least one DC power generating system. An AC receiving port is provided for receiving AC power from an AC power supplying system. A battery charging/discharging port is connected to a battery system for charging or discharging the battery system. A DC outputting port is provided for applying DC voltage to a load. A network interface port is coupled to the micro DC grid, and for receiving the power from the micro DC grid or for transferring power to the other energy routers of the micro DC grid.04-11-2013
20090195075AUTOMATIC BATTERY RECONNECTION - An uninterruptible power supply system includes power converter circuitry configured to convert AC input power to a first DC power and a second DC power to the first DC power, a battery pack configured to provide the second DC power, a power relay mechanism coupled to the power converter circuitry and to the battery pack that selectively moves between an open position and a closed position, the power relay mechanism coupling the battery pack to the power converter circuitry when in the closed position and isolating the battery pack from the power converter circuitry when in the open position, and control circuitry configured to provide a control signal, where the power relay mechanism includes a motor actuator coupled to the control circuitry, the motor actuator being responsive to the control signal to change the power relay mechanism from the open position to the closed position.08-06-2009
20090127933Uninterruptible Power Supply With Additional Feeding - UPS unit comprising power step-up means connected to the power mains and conversion means able to produce an AC output voltage, battery supply means being connectable, by switching means, to said power step-up means, whose peculiar aspect is that it comprises at least one additional power supply source, connected to power step-up means, connected in turn to said conversion means, said additional power supply source being able to power the downstream loads of said UPS unit, when a first power threshold pre-set in said power step-up means of said additional power supply source is reached, said additional power supply being able to be integrated by said power mains or said battery.05-21-2009
20130026837POWER SUPPLY DEVICE, METHOD OF CONTROLLING POWER SUPPLY DEVICE, AND IMAGE FORMING APPARATUS - A power supply device includes a power generation unit; a plurality of storage batteries configured to be charged with power output from the power generation unit; a monitoring unit configured to monitor a state of each storage battery and the power output from the power generation unit; and a control unit configured to select one of the storage batteries to supply power to a target device on the basis of a monitoring result by the monitoring unit when the target device is in a power saving mode, the control unit being configured to control charging of each storage battery.01-31-2013
20130026836NON-ISOLATED AC-DC CONVERTER HAVING A POSITIVE OUTPUT BUCK-BOOST CONVERTER AND PFC AT INPUT SUPPLY - A power converter includes a battery having a positive terminal and a negative terminal, a first power input to receive AC input power, a second power input to receive DC input power from the battery, a first power output to charge the battery, a second power output to provide power to a load, a rectifier circuit coupled to the first power input, and a non-isolated single-stage power conversion circuit having an input and configured as a buck-boost converter. The power at the second power output is derived from the first power input and/or the second power input. The single-stage power conversion circuit is configured to convert an AC voltage to a DC voltage using a common energy storage element, and is coupled to the first power output and the rectifier circuit.01-31-2013
20130033111SOLAR POWER GENERATION SYSTEM - A system includes a solar power generator having plural arrays and a power storage device having plural secondary batteries. The solar power generator and the power storage device are respectively provided with DC/DC converters coupled together, and each DC/DC converter is coupled with an AC/DC converter to configure a power generating/storing unit. Such units are coupled to an electricity distribution system through respective AC/DC converter. The solar power generator of each unit is provided with a control unit performing maximum power point tracking control so as to obtain the maximum output characteristic of the solar power generator. The power storage device is provided with a control unit detecting a voltage at the battery side and controlling charging/discharging thereof. Moreover, an integrated control device coupled with respective control units and controlling charging/discharging and an output is provided.02-07-2013
20130076141UNINTTERUPTIBLE POWER SUPPLY SYSTEMS AND METHODS EMPLOYING ON-DEMAND ENERGY STORAGE - An uninterruptible power supply (UPS) system includes first and second busses, a first switching circuit configured to selectively couple an AC source to the first and second busses and a second switching circuit configured to selectively couple the first and second busses to a load. The system also includes a storage capacitor and a third switching circuit configured to couple the storage capacitor between the first and second busses. The system further includes a control circuit configured to control the first, second and third switching circuits to generate an AC voltage at the load.03-28-2013
20130076142AC POWER SUPPLY APPARATUS AND METHODS PROVIDING VARIABLE VOLTAGE WAVEFORMS FOR LOAD TRANSIENT CONDITIONS - Some embodiments of the inventive subject matter provide methods of operating an uninterruptible power supply (UPS) configured to provide power to a load from first and second power sources, e.g., from a utility source and a battery or other backup source. The methods include operating the UPS to momentarily provide an altered voltage waveform in coordination with a transition of the load between first and second power sources. For example, the altered voltage waveform may provide a momentarily increased voltage rate of change to compensate for a transient current demand presented by the load.03-28-2013
20090121550Universal Power Adapter - An apparatus is disclosed including a power source portion, and an electrical cord portion. The power source portion may include a protrusion, which can be inserted into a power tool portion in order for the protrusion to be electrically connected to the power tool portion, and a battery. The electrical cord portion may have a first end which is electrically connected to the power source portion and a second end which has an electrical plug which can be inserted into an electrical wall outlet. The apparatus may be configured so that the battery can operate a motor of the power tool portion in a direct current state and power from an AC electrical wall outlet can operate the motor of the power tool portion during an alternating current state.05-14-2009
20100013314EXTENDING BACKUP TIMES OF UNINTERRUPTIBLE POWER SUPPLIES - A system for extending backup times using networks of direct current (DC) uninterruptible power supplies (UPS) is provided. A first DC UPS has a first input and a first output. A second DC UPS has a second input coupled to the first output of the first DC UPS, a second output coupled to at least one electrical load, and a third output coupled to the first input of the first DC UPS. Battery current from the first and second DC UPS is shared with the at least one electrical load in the event of a power loss.01-21-2010
20090160255UNINTERRUPTIBLE POWER SUPPLY - An external uninterruptible power supply (“UPS”), and a related method, are presented in which a predetermined desired DC voltage potential is applied directly to the internal DC voltage power distribution bus in a computer. The UPS is configured to use an automotive battery to provide the predetermined desired DC voltage potential in the event of the loss of the AC voltage input signal. In a preferred embodiment, the UPS includes an inverterless AC-DC power supply, such as a bridge rectifier circuit, for supplying a predetermined desired direct current voltage potential at its output. That output potential in turn is carried by a suitably arranged cord or power cable connected to the internal direct current voltage distribution bus in the computer. The distribution bus may be connected to one or more points-of-load, also known as “point-of-power” voltage conversion modules, each of which provide a regulated voltage to power the various high density chip loads, components and circuitry in the computer. The input voltage to a point-of-load power chip can vary over a wide range allowing unregulated voltages ranging from 11 to 14 volts which may be used to supply the point-of-load power chips with no operating problems since the chips are inherently an on-card switching regulator operating at a high frequency.06-25-2009
20130076143UNINTERRUPTIBLE POWER SYSTEM - The present invention provides an uninterruptible power system (UPS), the UPS comprising: a first converter having a first input terminal for receiving a first power source and a first output terminal for outputting a first voltage, wherein the first power source is a DC power or AC power and the first voltage is a DC voltage; a third converter having a third input terminal for receiving the second power source and the third output terminal connected to the first output terminal, wherein the second power source is a DC power; and a second converter having a second input terminal connected to the first output terminal and the third output terminal, and the second output terminal for outputting a second voltage corresponding to the first voltage.03-28-2013
20130043730SYSTEM AND METHOD FOR NOTIFYING AND FOR CONTROLLING POWER DEMAND - A method is provided in one example embodiment and includes computing energy usage associated with a domain that includes a plurality of endpoints; identifying particular endpoints of the plurality of endpoints that are capable of switching from a first power source to a battery power source; and communicating a broadcast message to the particular endpoints to switch to their corresponding battery power source.02-21-2013
20100109439LED LUMINAIRE WITH AUTOMATIC LUMINANCE COMPENSATION - An LED luminaire for normal or emergency lighting has a lamp section comprising a least one LED lamp, the LED lamp having an LED chip and a reflector section. The reflector section is formed of silver and is positioned to reflect light from the LED chip. A power section is coupled to supply power to the lamp section. A detector section has a silver-plated detector and is functional to detect sulfuration of the reflector section as a resistance value change. The power section is operable to adjust the power supplied to the lamp section upon detecting an increase in the resistance value at the silver-plated detector of the detector section.05-06-2010
20100109438Emergency Lighting System - An emergency lighting system comprising an electrical panel board comprising a two-pole switched breaker with one pole controlled using an Emergency Remote Operated Relay. Each of the poles of the circuit breaker is fed by a single phase. The controlled pole feeds normal power to the lighting ballast operating under normal conditions. The non-controlled pole feeds constant power to at least one battery which provides back-up power to the light(s) in an emergency/power failed condition. The Emergency Remote Operated Relay further comprises a two pole circuit breaker (BQD 2P) with one of the poles connected to a Remote Operated Relay that is remotely controllable.05-06-2010
20130026835SINGLE-BATTERY POWER TOPOLOGIES FOR ONLINE UPS SYSTEMS - A power converter includes a first power input to receive AC input power, a second power input to receive backup power, a first DC bus configured to provide a positive DC output voltage, a second DC bus configured to provide a negative DC output voltage, and a power conversion circuit coupled to the first DC bus and the second DC bus. The power conversion circuit has an inductor, a first switch device coupled in series with the inductor, a second switch device coupled in series with the first switch device, and a bypass relay coupled in parallel with the second switch device. The power conversion circuit is switchably coupled to the first power input and the second power input, and is operable to charge the inductor and generate the positive and negative DC output voltages.01-31-2013
20130082531ENERGY ADJUSTOR - An energy adjustor coupled between a fuel cell group and a secondary battery group is disclosed. A load is coupled to the secondary battery group in parallel. The energy adjustor includes a boost regulation module, a drop regulation module, a detecting module and a control module. The boost regulation module boosts an output voltage of the fuel cell group to generate a first adjustment voltage according to a first control signal. The drop regulation module drops the first adjustment voltage to generate a second adjustment voltage to the load according to a second control signal. The detecting module detects at least one of the fuel cell group, the boost regulation module, the drop regulation module and the load to generate a detection result. The control module generates the first and the second control signals according to the detection result.04-04-2013
20100026098Power supply assembly - A power supply assembly including a plurality of power supply modules which can be operated in parallel and are inserted or can be inserted into a common switch cupboard or rack or into a plurality of switch cupboards or racks, each power supply module having an inverter branch for continuously supplying electric power to a load at the output in a load branch. The power supply assembly also has a bypass assembly that ensures the power supply when power supply through the inverter branch fails or is insufficient. The reliability of the power supply is enhanced if each of the power supply modules has a bypass which is connected to the load branch, in parallel to the inverter branch. The bypass is separated from the load branch when the inverter path works properly and in the event of failure of an inverter branch, can be automatically connected by a control circuit to the load branch in order to maintain power supply.02-04-2010
20100148586LED lighting controller - A switch mode power supply controller provides power to a pair of light sources. The controller includes a low voltage programmable current source and adjusting elements for independently adjusting the current to the LED light sources. The controller also includes a first communication port for receiving a communication from an external device, such as a dimmer, or from another power supply controller; and a second communication port for sending a communication to a third power supply controller. These ports provide an upstream and downstream communication capability through a chain of controllers so that input from a device can be communicated upstream and downstream.06-17-2010
20090045680EXTENDED COLD (BATTERY BACKUP) REFRIGERATOR - A refrigerator includes a refrigerator cabinet, a refrigerator compartment disposed within the refrigerator cabinet, a freezer compartment disposed within the refrigerator cabinet, and a battery. There is at least one fan disposed within the refrigerator cabinet and electrically connected to the battery. The battery powers the at least one fan during a power outage to thereby circulate air from the freezer compartment to the refrigerator compartment. The at least one fan may be a direct current operated fan. The refrigerator may also include an inverter and the at least one fan may then be an alternating current operated fan electrically connected to the inverter. The battery may be disposed within the refrigerator cabinet or may be external to the refrigerator cabinet.02-19-2009
20120181871APPARATUS AND METHOD FOR PROVIDING UNINTERRUPTIBLE POWER - Systems and methods of controlling an uninterruptible power supply are provided. The uninterruptible power supply includes an input to receive input power, and an output to provide power to a load. The uninterruptible power supply also includes an inverter, a bypass switch, and a controller. The inverter is coupled with the input and with the output, and the bypass switch can provide the input power at the output in a bypass mode of operation. The controller is coupled with the inverter and the bypass switch. The controller can activate the bypass switch in a first configuration to provide the input power at the output during a first half of a cycle of an input voltage waveform, and can activate the bypass switch in a second configuration to provide the input power at the output during a second half of the cycle. With the inverter active during bypass operation, the inverter can more quickly provide output power upon the loss of bypass power, and can provide near unity power factor correction and harmonic distortion correction.07-19-2012
20090315402AC-DC CONVERSION DEVICE - In order to provide an AC-DC conversion device which is capable of making a small-sized, inexpensive system even in a case of an instantaneous voltage reduction capacity compensation capacity >> a load leveling capacity. The conversion device is constituted by connecting a fast switch between the commercial power source and the load and by connecting a PCS including a power storage unit, an AC-DC converter, and a linking transformer between the fast switch and the load. A part of a capacity constituting the power storage unit is constituted by an NaS battery and most of the reminder of the capacity is constituted by electric double layer capacitors.12-24-2009
20110006608METERING PUMP POWER SOURCE - A power supply system includes an energy generator and an energy storage system, each electrically connected to a power bus. The power bus provides electrical power to a load. The energy generator includes a wind turbine and a solar panel. The energy storage system includes a storage device and a regulator. The regulator is configured to transfer energy from the power bus to the storage device when the power bus exceeds a maximum voltage and to transfer energy from the storage device to the power bus when the power bus drops below a minimum voltage.01-13-2011
20130057073METHODS AND APPARATUS FOR PROVIDING UNINTERRUPTIBLE POWER - Power supply systems and methods are provided. In one aspect, a power supply system includes a frame, a power input to receive input power from a power source, a power output to provide output power to a load, at least one battery module mounted in the frame and having a battery output that provides battery power, at least one power module mounted in the frame and coupled to the power input to receive the input power, coupled to the battery output to receive the battery power, and coupled to the power output to provide the output power from at least one of the battery power and the input power, a first controller coupled to the at least one power module, and a second controller.03-07-2013
20130057074POWER STORAGE DEVICE AND POWER STORAGE SYSTEM - Provided is a power storage device including: a first chassis member; a second chassis member; a power inlet; one or plural power outlets; a battery module; a power conversion device; a housing; a lower lid; and an upper lid. The battery module is fixed closely to one surface of the first main surface portion. The power conversion device is fixed closely to one surface of the second main surface portion. A gap portion is formed between the first main surface portion and the second main surface portion by disposing the other surface of the first main surface portion and the other surface of the second main surface portion to face each other. The space is used to make air taken through the plural openings of the lower lid flow via the plural openings of the upper lid.03-07-2013
20130069435Pre-Stage Boost Device for UPS - A pre-stage boost device, comprising: a selector switch (03-21-2013
20130069434PARALLEL CONTROL AND PROTECTION FOR UPS - According to one aspect, embodiments of the invention provide a method of operating a UPS system having a first UPS, the method comprising powering on the first UPS, detecting a first signal at a first I/O of the first UPS using a first detection circuit of the first UPS, detecting a second signal at a second I/O of the first UPS using a second detection circuit of the first UPS, based on a status of the first signal and a status of the second signal, configuring the first UPS to operate in one of a master mode of operation and a controlled mode of operation.03-21-2013
20130069436APPARATUS AND METHOD FOR CONTROLLING POWER OFF IN A MOBILE TERMINAL - An apparatus configured to control power off in an apparatus includes a power unit, a battery detachment detector, an input unit, and a controller. The power unit supplies power from at least one of a battery and an auxiliary power unit. When detecting that the battery is separated from the power unit, the battery detachment detector outputs a battery separation signal to the input unit using power from the auxiliary power unit. When receiving the battery separation signal from the battery detachment detector, the input unit generates a power off event using power from the auxiliary power unit. When the power off event occurs from the input unit, the controller performs a power off procedure using power from the auxiliary power unit.03-21-2013
20120112547SYSTEM AND METHOD FOR BIDIRECTIONAL DC-AC POWER CONVERSION - A power converter includes a power input configured to receive input power from an AC power source, a power output configured to provide output power to a load, a battery interface configured to exchange DC power with a battery, and power converter circuitry. The power converter circuitry is adapted to, in a first interconnection configuration, convert the input power into the DC power at the battery interface, and, in a second interconnection configuration, convert the DC power at the battery interface into the output power. The power converter circuitry has a power line, a transformer, a first connection node switchably connected to the power line in the first interconnection configuration and switchably connected to the transformer in the second interconnection configuration, and a second connection node switchably connected to the transformer in the first interconnection configuration and switchably connected to the power line in the second interconnection configuration.05-10-2012
20120112546Wind & solar powered heat trace with homeostatic control - A homeostatic heat trace powered by wind and solar electrical generators for preventing freeze-up of equipment at remote sites. A heat trace system wherein solar power may be used as backup when wind velocities are too low or high. A heat trace with a UPS backup for preventing freeze-up of equipment at remote sites during power failure. A homeostatic control system for maximizing the utilization of energy stored in a bank of batteries. A programmable logic controller with a homeostatic control system for maintaining battery charge. A homeostatic heat trace system powered by wind and backed up by solar power to prevent freeze-up of equipment at remote sites, including oil and gas wells.05-10-2012
20090289503ILLUMINATION CONTROL SYSTEM - According to one embodiment, an illumination control system controlling remotely an illumination device comprises a signal detection module configured to detect a control signal from a remote controller with a rectification circuit to which a bias voltage is applied, a switch control module configured to turn a switch of the illumination device on or off in accordance with the detected signal, an energy receiving module configured to receive energy from external environment and to convert the energy into electrical energy, an internal battery configured to store the converted electrical energy, and a power supply module configured to supply drive voltage for the signal detection module and the bias voltage from the converted electrical energy or from the electrical energy stored in the internal battery.11-26-2009
20110012428POWER-SAVING POWER SUPPLY APPARATUS WITH BATTERY MODULE - A power-saving power supply apparatus with battery module converts an inputted AC power into an outputted DC power and includes: a Triac switch electrically connected to the inputted AC power; a Triac driver electrically connected to the Triac switch; a power microprocessor electrically connected to the Triac driver; and a battery module electrically connected to the power microprocessor. When the apparatus is idle or in low workload, the power microprocessor sends a switch signal to the Triac driver to turn off the Triac switch and thus shut off the inputted AC power. Thus, the apparatus is standby with relatively low consumption of electricity. At this time, the battery module provides power to the power microprocessor.01-20-2011
20130062951BATTERY-BACKED POWER INTERFACE TRANSFORMER FOR LOW-POWER DEVICES - A power interface enables a low-power device to be powered from an alternating current (AC) wall receptacle or light socket with automatic backup battery charging. The power interface of an embodiment comprises a transformer module that receives an input signal. The device includes a battery module coupled to the transformer module, and the battery module includes battery charging circuitry coupled to a battery. The device comprises an output controller coupled to the transformer module and the battery module. The output controller includes detector circuitry that detects a state of the input signal. The output controller automatically controls coupling of one of a transformer module output and a battery module output to a device output according to the state of the input signal.03-14-2013
20120293002METHOD, DEVICE, AND SYSTEM FOR SUPPLYING POWER FROM BATTERIES - A method for supplying power from batteries includes: detecting a power supply state of a cycling battery in a system, where the system firstly uses the cycling battery to supply power to a load; and when a voltage of the cycling battery drops to a voltage threshold, activating a standby battery to supply power to the load.11-22-2012
20090236913AUDIO AND VIDEO BACK-UP POWER BLOCK - An uninterruptible power supply having an input connector for receiving AC power from a centralized source of electric power such as a power grid of an electric utility company, a first electric outlet, and a second electric outlet for delivering AC power, a first switch for selectively allowing AC power therethrough to the first outlet, a second switch for selectively allowing AC power therethrough to the second outlet: and a controller operable to control the second switch so that AC power is delivered to the second outlet a predetermined amount of time after AC power is delivered to the first outlet (i.e., after a time delay).09-24-2009
20090236912APPARATUS AND METHOD FOR ON-LINE POWER SOURCE REPLACEMENT IN WIRELESS TRANSMITTERS AND OTHER DEVICES - A method includes powering a device using one or more first power sources and coupling one or more second power sources to provide power to the device. The method also includes replacing at least one of the first power sources, where the one or more second power sources provide power to the device during replacement of the at least one first power source. The first power source(s) could include one or more first batteries in one or more first battery slots, and the second power source(s) could include one or more second batteries in one or more second battery slots. The second batteries could be inserted into the second battery slots prior to replacement of at least one of the first batteries. The first power source(s) could also include one or more batteries in one or more battery slots, and the second power source(s) could include a portable voltage source.09-24-2009
20090236914Selectable backup power supply - A selectable backup power supply device for providing power to a real time clock (RTC) and a memory unit is disclosed. The device includes a backup battery, a first power outputting unit and a second power outputting unit, wherein the backup battery outputs a backup voltage, the first power outputting unit is connected to the backup battery and the RTC for receiving the backup voltage and outputting a first supply voltage to the RTC, and the second power outputting unit is connected to the backup battery and the memory unit, for receiving the backup voltage and, in accordance with a selection signal, outputting a second supply voltage to the memory unit or stopping the output of the second supply voltage.09-24-2009
20130214604UNINTERRUPTIBLE POWER SUPPLY SYSTEMS AND METHODS SUPPORTING LOAD BALANCING - An uninterruptible power supply (UPS) system that includes a multiphase AC output configured to be coupled to a load, an inverter having an output coupled to the AC output and a control circuit operatively associated with the inverter and configured to cause the inverter to compensate for a phase imbalance of a load coupled to the AC output while power is being delivered to the load from an AC power source independently of the inverter.08-22-2013
20090026842POWER SUPPLY UNIT - A power supply unit for supplying power to a device has a rechargeable, main battery; a charging arrangement for charging the main battery; a non-rechargeable back-up battery; load terminals for connection to a load; and a control unit for controlling supply of power to the load primarily from the main battery and secondarily from the back-up battery. The device is, in particular, a single bay, stand alone parking meter. In the event that the main battery runs low, the control unit is configured to supply power to the load from both the main battery and the back-up battery or only from the back-up battery. The back-up battery is easily replaceable, and the power supply unit has a bay, with connectors for receiving the back-up battery. The main battery is charged from solar panels. A communication device is provided to communicate status messages wirelessly to a control system.01-29-2009
20120235490ELECTRIC POWER SUPPLY APPARATUS OF ELECTRIC APPARATUS - An electric power supply of an electric apparatus is provided. The electric power supply includes a low power supply unit configured to convert a voltage of an input alternating current (AC) power source and provide the converted voltage, a power storage unit configured to be charged by receiving the converted voltage from the low power supply unit and to provide the charged power as a standby power of the electric apparatus, a voltage detection unit configured to detect a level of voltage charged in the power storage unit, and a switch unit configured to allow the voltage of the low power supply unit to be supplied to the power storage unit, or to block the voltage of the low power supply unit from being supplied to the power storage unit according to the level of voltage charged in the power storage unit detected through the voltage detection unit.09-20-2012
20120235493CONTROL DEVICE, CONTROL SYSTEM, AND CONTROL METHOD - Provided is a smart controller (09-20-2012
20120235492POWER SUPPLY SYSTEM - A power supply system includes a current detection unit for detecting a current used by a load and an electric cell. The power supply system further includes a control unit for controlling the electric power stored in the electric cell to be supplied to the load if it is determined that the current detected by the current detection unit exceeds a cutoff threshold.09-20-2012
20120235491PRIORITIZATION CIRCUIT AND ELECTRIC POWER SUPPLY SYSTEM - There is provided a prioritization circuit which selects one of a system power supply and a secondary battery unit as a selected supply source and the other as a non-selected supply source and which causes supply of electric power with a higher priority from the selected supply source to a power supply unit, wherein the non-selected supply source is connected to the power supply unit through a diode element which generates a voltage drop and the selected supply source supplies electric power to the power supply unit without passing through a diode element.09-20-2012
20120235489ELECTRONIC APPARATUS AND POWER SUPPLY CONTROL METHOD - There is provided an electronic apparatus including a first battery and a second battery, a control unit configured to control an operation of the electronic apparatus, a first switch configured to switch whether or not to supply power from the first battery to the control unit, and a second switch configured to switch whether or not to supply a potential from the second battery to the first switch. When power from the first battery is supplied to the control unit, the control unit applies to the first switch a potential for supplying power from the first battery to the control unit.09-20-2012
20110278933UNINTERRUPTIBLE POWER SUPPLY SYSTEMS AND METHODS SUPPORTING HIGH-EFFICIENCY BYPASSED OPERATION WITH A VARIABLY AVAILABLE POWER SOURCE - An uninterruptible power supply (UPS) system includes an AC input configured to be coupled to an AC power source, an AC output configured to be coupled to a load, a power conversion circuit comprising a first converter circuit configured to receive power from a variably available power source, a second converter circuit coupled to the AC output, a DC link coupling the first and second converter circuits, and a switching circuit, e.g., a bypass circuit, configured to selectively couple and decouple the AC input and the AC output. The UPS system further includes a control circuit operatively associated with the power conversion circuit and the switching circuit and configured to cause concurrent transfer of power to a load at the AC output from the AC power source and the variably available power source via the switching circuit and the power conversion circuit, respectively.11-17-2011
20110278934DIGITAL CONTROL METHOD FOR OPERATING THE UPS SYSTEMS IN PARALLEL - Systems and methods of operating uninterruptible power supplies in parallel in a power distribution system to provide power to a load are provided. At least one uninterruptible power supply inverter provides power to the load. A communication interface provides a measured value of at least one of inverter output current of a first uninterruptible power supply and a measured value of the load current to a second uninterruptible power supply, and receives a measured value of at least one of inverter output current of the second uninterruptible power supply and the load current. A controller controls the uninterruptible power supplies to operate in one of a master state and a slave state. In the master state the uninterruptible power supply is configured to control the voltage to the load, and in the slave state the uninterruptible power supply is configured to determine a reference output current value based at least in part on at least one of the measured value of inverter output current of the second uninterruptible power supply and the measured value of the load current. The uninterruptible power supply in the slave state drives its inverter output current toward the reference output current value to provide its share of the load current.11-17-2011
20110278932UNINTERRUPTIBLE POWER SUPPLY SYSTEMS AND METHODS USING ISOLATED INTERFACE FOR VARIABLY AVAILABLE POWER SOURCE - Uninterruptible power supply (UPS) systems include an AC input configured to be coupled to an AC power source, an AC output configured to be coupled to a load and a UPS circuit including a first converter circuit coupled to the AC input, a second converter circuit coupled to the AC output and a DC bus coupling the first converter circuit to the second converter circuit. The system further includes a third converter circuit having an output coupled to the AC output and an input configured to receive power from a variably available power source and a control circuit operatively associated with the UPS circuit and the third converter circuit and configured to cooperatively control the UPS circuit and the third converter circuit to selectively transfer power to the load from the AC power source and the variably available power source.11-17-2011
20110278931UNINTERRUPTIBLE POWER SUPPLY SYSTEMS AND METHODS SUPPORTING LOAD BALANCING - An uninterruptible power supply (UPS) system that includes a multiphase AC output configured to be coupled to a load, an inverter having an output coupled to the AC output and a control circuit operatively associated with the inverter and configured to cause the inverter to compensate for a phase imbalance of a load coupled to the AC output while power is being delivered to the load from an AC power source independently of the inverter.11-17-2011
20100007211CONTROL DEVICE AND CONTROL METHOD FOR POWER CONVERSION SYSTEM HAVING INSTANTANEOUS VOLTAGE DROP - SERVICE INTERRUPTION COUNTER-MEASURE FUNCTIONS - [Task] In a power conversion system, a variation in PCS alternating current voltage is suppressed during a change operation to a self-contained run according to an instantaneous voltage drop-service interruption.01-14-2010
20110291484ACCELERATOR AND CYCLOTRON - An accelerator includes an inflector through which a beam entering from an ion source passes and which introduces the beam to an acceleration orbit. The inflector includes a beam convergence unit that converges the beam passing through the inflector. A cyclotron, which accelerates a beam in a convoluted acceleration orbit, includes magnetic poles, D-electrodes, and an inflector. The magnetic poles generate a magnetic field in a direction perpendicular to the acceleration orbit. The D-electrodes generate a potential difference, which accelerates the beam, in the acceleration orbit. A beam, which enters in an incident direction perpendicular to the acceleration orbit, passes through the inflector, and the inflector bends the beam so as to introduce the beam to the acceleration orbit. The inflector includes a beam convergence unit that converges the beam passing through the inflector.12-01-2011
20100090534SELF-STOPPING ELECTRICAL APPLIANCE - A household appliance including a wiring, a power supply unit, a switch actuated by the wiring, and an energy store. The power supply unit is connected to a power supply network and supplies power to controlled functional units of the household appliance and to the wiring. The switch, which is actuated by the wiring, disconnects the power supply unit from the power supply network on a primary side of the power supply unit and in an idle state of the household appliance. The energy store stores energy that keeps the switch open in the idle state of the household appliance.04-15-2010
20090160254SYSTEMS FOR AND METHODS OF CONTROLLING OPERATION OF A UPS - A UPS includes an AC output, power factor control circuitry; and a DC bus coupled to the power factor control circuitry where the power factor control circuitry is configured to determine a difference in instantaneous power supplied to the AC output and to adjust a voltage of the DC bus based, at least partly, on the difference. In one embodiment, the UPS includes a single phase AC input. In another embodiment, the power factor control circuitry is configured to determine a cumulative difference in instantaneous power supplied to the AC output.06-25-2009
20120025616DC POWER SYSTEM HAVING A POWER ARCHITECTURE FOR OPTIMIZING EFFICIENCY AND A SYSTEM CONTROLLER OF THE SYSTEM - A DC power system and a system controller for the DC power system are disclosed herein. The architecture of the DC power allows optimizing efficiency thereof. In one embodiment, the DC power system includes: (1) a battery configured to provide transitional DC power to a load bus of the DC power system, the battery indirectly coupled to the load bus, (2) a source connection circuit configured to conditionally connect the battery to the load bus and (3) a DC power system controller configured to direct the source connection circuit to connect the battery to the load bus in response to an outage of an AC input of the DC power system.02-02-2012
20100219689LIFTING MAGNET AND METHOD FOR EMERGENCY POWER SUPPLY - The invention relates to a lifting magnet (09-02-2010
20090189451ESTIMATED REMAINING LIFE OF A BATTERY INCLUDED IN AN UNINTERRUPTIBLE POWER SUPPLY - An uninterruptible power supply (“UPS”) is provided with a backup power supply that has an adjustable reserve power level that is based on a user's input and/or is configured to notify a user if a battery included in the UPS needs to be replaced. In one embodiment of the present invention, the UPS (or a circuit included therein) estimates a remaining life (ERL) of the battery by considering various battery conditions, including, but not limited to, a predetermined battery life expectancy, whether the battery is being used to power a load, and battery temperature. If it is estimated that the ERL is low, or below a predetermined threshold, then the UPS (or a circuit included therein) is configured to notify a user that the battery needs to be replaced.07-30-2009
20110148206In-line uninterruptible power supply - An in-line uninterruptible power supply for use with an electronic device having a base unit and a power adapter is presented. In particular, the in-line UPS is positioned between the electronic device's power adapter and the base unit, and is structured to supply continuous power to the electronic device, even in the event of a temporary power failure. Moreover, the in-line UPS comprises an input signal converter, such as a DC-DC voltage converter which is structured to convert a UPS input signal to a battery input signal. The in-line UPS further comprises an output signal converter, such as a DC-DC voltage converter structured to convert a battery output signal to a UPS output signal, wherein the UPS input signal and the UPS output signal are substantially equivalent.06-23-2011
20090309423CHARGING CONTROL APPARATUS AND METHOD FOR CONTROLLING THE SAME - A charge control apparatus operable in a first power mode or a second power mode having power consumption less than that of the first power mode, the charge control apparatus includes a main power supply, an auxiliary power supply, a charging unit, a time count unit, and a charge control unit, wherein the charge control unit controls the charging unit to switch from a first charge mode to a second charge mode upon detecting that the charging time counted by the time count unit is or larger than a predetermined time period in the first power mode, and wherein the charge control unit controls the charging unit to operate in the second charge mode when the charge control apparatus operates in the second power mode.12-17-2009
20110187196PHOTOVOLTAIC POWER GENERATION SYSTEMS AND METHODS - A photovoltaic power generation system, includes: a photovoltaic power generator configured to output an electrical power generated using light; an inverter configured to convert the generated electrical power into an alternating current (AC) power and supply the AC power to a commercial power source or to a load; a capacitor configured to store the generated electrical power; and a monitor configured to direct the generated electrical power to the inverter or the capacitor based on an operation mode selected by a user.08-04-2011
20100084920Power Line Energy Harvesting Power Supply - A current transforming harvester (“CTH”) is capable of producing power from a conductor on a preexisting power grid without alteration of the conductor or the preexisting power grid. The CTH includes a current transformer (“CT”) that captures energy via magnetic flux from the conductor. The CT is substantially circular and includes two halves called a “split core,” which allow the CT to easily attach to the conductor without opening the circuit in which the conductor operates. A clamping mechanism of the CTH may secure the CTH to the conductor via a pair of spring-biased clamp pads. The CTH includes circuitry that converts the magnetic flux energy captured by the CT into electrical energy suitable for consumption by an electrical device.04-08-2010
20100079003AIRBORNE POWER SYSTEM DISCONNECT SYSTEM AND METHOD - An system and method to automatically disconnect a retrofit electrical unit from an electrical system in the event of an emergency situation and maintain power to the retrofit electrical unit.04-01-2010
20100090533AC/DC POWER CONVERTER USING MAGNETIC ENERGY RECOVERY SWITCH - An AC/DC power converter which charges a secondary battery from an AC power supply and also converts power from the secondary battery to the AC voltage is provided. A capacitor C is connected to DC terminals of the four reverse-conductive type semiconductor switches in a single-phase bridge structure, and a secondary battery is connected via a DC inductance to the semiconductor switches. The semiconductor switches are connected via an AC inductance L with an AC power supply and opposing pairs of the semiconductor switches are alternately turned ON/OFF in synchronization with the phase of the supply voltage. When an AC power supply with a frequency which is lower than the resonance frequency of the LC is connected, the switching will be carried out in a zero-voltage-zero-current condition and AC/DC reversible power conversion is possible just through the control of the gate phase of the switches.04-15-2010
20090278407METHOD AND SYSTEM FOR DISCOVERING A POWER SOURCE ON A PERIPHERAL BUS - Improved techniques to recognize a power source on a peripheral bus and/or determine power available from the power source via the peripheral bus are disclosed. Typically, the peripheral bus is supported by a cable connected between a host device and an electronic device. In this case, the host device is a power source (e.g., power adapter or battery pack) and the cable is used to provide power from the power source to the electronic device. Hence, by understanding the power available from the power source, the electronic device can manage its power utilization so as to operate in a stable and reliable manner. The electronic device is, for example, a portable computing device. Examples of portable computing devices include a Portable Digital Assistant (PDA) and a portable media player.11-12-2009
20090179494On-line uninterruptible power system - The present invention discloses an on-line uninterruptible UPS system, comprising an AC-DC conversion circuit, a DC-AC conversion circuit and a backup battery circuit, characterized in that the backup battery circuit comprises a battery group and two switch devices, the two switch devices are connected in series, and then connected in parallel with the battery group, the two switch devices are turned on complementarily to each other, the two ends of the battery group are connected to a positive voltage output end and a negative voltage output end respectively, and a neutral line end is connected in between the two switch devices. In the present invention, since two switch devices are connected in series and then in parallel to a battery group, by complementary turning on of the two switch devices, the one battery group can achieve the function of time-sharing operation of two battery groups, such that the number of the batteries in the UPS system can be reduced by half.07-16-2009
20090091189Uninterruptible Power Supply - The invention is to provide an uninterruptible power supply that is able to response to diverse output specifications of DC power source units while avoiding increase of numbers of models. DC power source units 04-09-2009
20100123352HYBRID POWER SYSTEM FOR A VEHICLE - A hybrid power system for a vehicle is disclosed. The hybrid power system includes an on-board compressed air supply and a battery. One or more electric motors are coupled to the vehicle wheels. The compressed air drives an air motor that is coupled to an electric generator. The electric generator is coupled to a smart power controller which controls the delivery of compressed air to the air motor and also directs the electric power to an electric motor battery bank, an accessory battery, a capacitor bank for storing the electric energy or directly to the electric motors. In accordance with the present invention, the smart energy controller optimizes the compressed air and electric energy sources to maximize the driving range of the vehicle.05-20-2010
20090284076FAULT-TOLERANT BATTERY SET AND START-UP BATTERY MODULE - A fault-tolerant battery set and a start-up battery module are described. The fault-tolerant battery set includes a main battery module, a battery monitoring unit, a control switch unit, and a back-up battery module. The main battery module includes a battery unit and a battery monitoring circuit. When the battery unit fails, the control switch unit conducts a power supply connection path according to a failure signal sent from the battery monitoring circuit, so as to replace the failed main battery module with a back-up power provided by the back-up battery module through the power supply connection path.11-19-2009
20110198933POWER CONVERSION CIRCUIT AND POWER CONVERSION CIRCUIT SYSTEM - A power conversion circuit system comprises a primary conversion circuit, a secondary conversion circuit, and a control circuit for controlling the primary and secondary conversion circuits. The primary conversion circuit comprises a primary full bridge circuit, which includes a bridge section composed of both a primary coil in a transformer and a primary magnetic coupling reactor in which two reactors are magnetically coupled, a first input/output port disposed between a positive bus bar and a negative bus bar of the primary full bridge circuit, and a second input/output port disposed between the negative bus bar of the primary full bridge circuit and a center tap of the primary coil in the transformer. The secondary conversion circuit has a configuration similar to that of the primary conversion circuit.08-18-2011
20110198932Ferroresonant transformer for use in uninterruptible power supplies - A ferroresonant transformer comprises a core, a main shunt, first windings, second windings, and third windings. The main shunt arranged relative to the core to define a primary side and a secondary side of the ferroresonant transformer. The first windings are arranged on the primary side of the ferroresonant transformer and are operatively connected to the primary power source. The second windings are arranged on the secondary side of the ferroresonant transformer and are operatively connected to the secondary power source. The third windings are arranged on the secondary side of the ferroresonant transformer and are operatively connected to the resonant capacitor. When a primary signal is present on the first windings, a first output signal is present on at least a portion of the third windings. When a secondary power is present on the second windings, a second output signal is present on at least a portion of the third windings.08-18-2011
20100148585Hybrid installation with a biogas installation - A hybrid installation for providing electric energy from regenerative energy sources, comprising a biogas installation that provides electric energy, and at least one additional energy converter, which provides electric energy and whose releasable power is depending of external influence factors, of the wind supply and/or the sun irradiation in particular, wherein the electric energy of the biogas installation and the electric energy of the at least one additional energy converter are fed into a common mains grid, characterised in that the biogas installation features a gas turbine with an electric generator which is operated by the biogas produced in the biogas installation, and whose waste heat can be supplied to the biogas installation via a heat exchanger.06-17-2010
20100148584UNINTERRUPTIBLE POWER SUPPLY WITH LOW POWER LOSS - An uninterruptible power supply includes an energy storage unit, an AC-to-DC converting circuit, a charging circuit, a selection circuit, a primary detecting circuit, a primary control circuit and a secondary control circuit. The primary detecting circuit is connected to an output loop of the uninterruptible power supply for detecting an operating status of the uninterruptible power supply and issuing a corresponding operating message. The primary control circuit is connected to the primary detecting circuit and the selection circuit for controlling operations of the uninterruptible power supply. The secondary control circuit is connected to the primary detecting circuit, the selection circuit and the primary control circuit for controlling operations of the uninterruptible power supply. The primary control circuit and the secondary control circuit are enabled or disabled according to the operating message.06-17-2010
20090289504Power saving uninterruptible power supply - The power saving uninterruptible power supply (UPS) has a first and second switches, an energy spared switch, a transformer, an automatic voltage regulator (AVR), a charger-and-inverter, a normal mode determination unit and an electric switch. When the utility power is stable, the first and second switches are connected together to supply the utility power to a load. At the time, the energy spared switch is physically disconnected with the utility power and the transformer and the AVR. Therefore, the transformer and AVR do not consume more energy of the utility power and the transforming efficiency of the UPS is increased.11-26-2009
20090295228POWER SUPPLY WITH STANDBY POWER - Methods, systems, and devices are described for auxiliary power with low standby power consumption. Switching power converters typically include a switching power element (e.g., a power transistor), driven by a switching controller (e.g., including a gate driver). The power output of the switching power converter may be a function of the switching signal provided by the switching controller. For example, a pulse-width modulated (“PWM”) signal may be used to drive the switching power element, and the output of the switching controller may be adjusted by adjusting the frequency and/or duty cycle of the PWM signal. Embodiments implement cycle extension techniques to effectively extend a portion of the PWM signal to generate additional charge. The additional charge may be used to power an auxiliary power unit. The auxiliary power unit may then be used to drive the switching controller and/or to provide a source of power for other internal or external components.12-03-2009
20130099574SYSTEM AND METHOD FOR MULTIPLE POWER SUPPLIES - A system having multiple uninterruptable power supplies switchably coupled to a single energy storage device. The uninterruptable power supplies are switchably coupled to the single energy storage device (e.g., a bank or collection of energy storage elements) by at least one disconnect switch assembly that includes at least a first switch coupled to the first uninterruptable power supply and a second switch coupled to the second uninterruptable power supply.04-25-2013
20110204720EFFICIENT USAGE, STORAGE, AND SHARING OF ENERGY IN BUILDINGS, VEHICLES, AND EQUIPMENT - The present disclosure relates generally to energy demand and supply for buildings, vehicles, and equipment. In exemplary embodiments, energy may be stored in one or more battery packs (e.g., stationary batteries or vehicle batteries) for use in buildings, appliances, and equipment typically relying on energy from a power grid. The exemplary embodiments may store the energy during periods of low demand and/or low cost of energy. Thus, the exemplary embodiments may reduce costs associated with energy usage. The exemplary embodiments may use the stored energy to reduce demand on the power utility during periods of high demand and/or provide energy back to the power utility to meet demands.08-25-2011
20090267418SWITCH POWER SUPPLY AND ELECTRONIC DEVICE HAVING SAME - A switch power supply includes an AC/DC converter, a DC/DC converter, a battery charge-discharge switching circuit, and a detecting and controlling circuit. The AC/DC converter receives an input AC voltage and converts the input AC voltage into a DC voltage. The DC/DC converter converts the DC voltage into several working voltages required for operating the electronic device. The battery charge-discharge switching circuit is selectively connected to the AC/DC converter or the DC/DC converter and connected to the battery. The detecting and controlling circuit detects the input AC voltage. If the input AC voltage is abnormal, the detecting and controlling circuit issues a control signal to the battery charge-discharge switching circuit. In response to the control signal, the battery issues a discharge voltage to the DC/DC converter and the discharge voltage is converted into the working voltages by the DC/DC converter.10-29-2009
20090261654Power path control circuit - The present invention provides a power path control circuit comprising: an input node for receiving an external power; a first power transistor electrically connected between the input node and a first node, for controlling power supplied from the input node to the first node; a second power transistor electrically connected between the first node and a battery, for controlling power supplied from the battery to the first node; an error amplifier including an output electrically connected with a gate of the second power transistor, a first input terminal electrically connected with the first node, and a second input terminal electrically connected with the battery, wherein a voltage difference is allocated between the two input terminals.10-22-2009
20110198934PHOTOVOLTAIC POWER SYSTEM - A photovoltaic power system comprising: a plurality of photovoltaic power units each of which includes: a solar battery unit in which high-voltage output solar battery modules are connected in parallel with each other; and a conversion portion that converts a direct-current voltage output from the solar battery unit; and at least one transmission line which is disposed in parallel with the plurality of photovoltaic power units and to which each of the plurality of photovoltaic power units is connected.08-18-2011
20110266874DEVICE ARRANGEMENT COMPRISING AN ELECTRONIC DEVICE AND A POWER ADAPTER AND METHOD FOR CONNECTING A POWER ADAPTER - A device arrangement includes an electronic device having a rechargeable battery and a power adapter which can be electrically coupled to the electronic device and has a converter circuit for producing at least one operating voltage (U11-03-2011
20110266872TEMPERATURE-SENSING UNINTERRUPTIBLE POWER SUPPLY SYSTEM AND METHOD FOR CONTROLLING THE SAME - The present invention discloses a temperature-sensing uninterruptible power supply system and a method for controlling the same. The temperature-sensing uninterruptible power supply system comprises a data processing device, an uninterruptible power supply device, a human temperature sensing module, and a monitoring software; the control method comprises the steps of: the human temperature sensing module detecting a human temperature in a specific distance range; the monitoring software determining whether a user leave from the specific distance range; the uninterruptible power supply device switching to a power-saving mode and commanding the data processing device to shot down; the human temperature sensing module detecting that the user is back to the specific distance range; and restarting the uninterruptible power supply device and commanding the data processing device to reboot.11-03-2011
20080238205Hybrid green uninterruptible power system and bi-directional converter module and power conversion method thereof - A hybrid green uninterruptible power system including an input port, a boost module, a secondary battery, a bi-directional converter module, and an inverter module is provided. The boost module converts an AC utility power into a high voltage DC power. The bi-directional converter module includes a multi-winding transformer for either converting the high-voltage DC power into a low-voltage DC power for charging the secondary battery, or for releasing and boosting the power stored in the secondary battery. The multi-winding transformer further induces an additional DC power when converting the power. Whereby, the hybrid green uninterruptible power system is able to generate the additional DC power all the time and optimizes its energy converting efficiency between the secondary battery and an external device consuming DC power.10-02-2008
20080238203Battery charging and power managerment circuit - Traditionally, system loads are placed in parallel with the battery. This simple topology wastes the available power if the USB power and/or wall adapter is present. Recent topologies have made some improvements by powering the load by the maximum available voltage. Thus, if a USB power source or wall adapter is present, the load is powered by them rather than the battery, thus improving the system efficiency. However, since the USB power and wall adapter power are current limited, if the load requires higher current than the current limited USB or adapter, then the entire system is powered at voltage of the battery. The present invention further improves the system efficiency by distinguishing the load and powering the constant power loads by the maximum voltage and placing the constant current loads in parallel with the battery.10-02-2008
20100201196METHOD AND APPARATUS FOR PREDICTING END OF BATTERY LIFE - A powering subassembly for a portable electronic device includes a main battery, a converter, a backup battery, and a controller. The main battery provides a main voltage and the backup battery can provide a backup voltage. The converter receives the main voltage and increases the main voltage to at least one operating voltage. The controller receives the operating voltage from the converter, monitors the voltage of the main battery, and compares the monitored main battery voltage to a main battery low voltage threshold. The controller transmits a disconnect signal to decouple the main battery from the converter if the monitored voltage from the main battery is less than the main battery low voltage threshold. The controller transmits a connection signal to couple the backup battery to the converter if the monitored voltage is less than the main battery low voltage threshold. The backup battery provides the power for a predetermined minimum amount of time.08-12-2010
20100201195INDEPENDENT POWER SYSTEM - An independent power system has a power source control unit for controlling discharge of a storage battery to a connection terminal, a first electricity supply unit for supplying electricity generated by a solar battery to the power source control unit as an operation power, a second electricity supply unit for supplying electricity stored in the storage battery to the power source control unit as the operation power, and a switching element for inhibiting the second electricity supply unit from supplying the operation power to the power source control unit when the terminal voltage of the storage battery is less than an operational voltage threshold. During a period in which the switching element is off and stops operating, when the electricity generated by the solar battery is supplied by the first electricity supply unit, the power source control unit is activated to turn on the switching element.08-12-2010
20100201194METHODS AND APPARATUS FOR PROVIDING UNINTERRUPTIBLE POWER - Power supply systems and methods are provided. In one aspect, a power supply system includes a frame, a power input to receive input power from a power source, a power output to provide output power to a load, at least one battery module mounted in the frame and having a battery output that provides battery power, at least one power module mounted in the frame and coupled to the power input to receive the input power, coupled to the battery output to receive the battery power, and coupled to the power output to provide the output power from at least one of the battery power and the input power, a first controller coupled to the at least one power module, and a second controller, substantially similar to the first controller, coupled to the first controller, and coupled to the at least one power module, wherein each of the first controller and the second controller are configured to determine operational parameters of the power supply system and store a first set of parameters determined by the first controller and a second set of parameters determined by the second controller.08-12-2010
20090167091SELECTOR CIRCUIT FOR POWER MANAGEMENT IN MULTIPLE BATTERY SYSTEMS - A selector circuit configured to select among a DC power source and a plurality of batteries for an electronic device. The selector circuit includes a first comparator configured to compare a first input signal representative of a voltage level of the DC power source with a first threshold level and provide a first output signal representative of a difference between the first input signal and the first threshold level, and a selector output circuit. The selector output circuit is configured to provide selector output signals that control selection among the DC power source and the plurality of batteries. The selector output circuit providing said selector output signals to select the DC source and deselect the plurality of batteries if the first output signal is representative of the voltage level of said DC power source being greater than the first threshold level.07-02-2009
20110266873INFORMATION PROCESSING APPARATUS AND METHOD OF CONTROLLING AN INFORMATION PROCESSING APPARATUS - According to one embodiment, an information processing apparatus includes a setting module. The setting module configured to set the apparatus to a first mode when first external direct current power is supplied to the apparatus, and to set the apparatus to a second mode when the first external direct current power and second external direct current power are supplied to the apparatus, wherein an operation of the apparatus at a power greater than the first external direct current power is disabled in the first mode, and an operation of the apparatus at a power greater than the first external direct current power is enabled in the second mode.11-03-2011
20080278005Uninterruptible power supply and method for implementing said power supply - An uninterruptible power supply comprising: 11-13-2008
20080278003HIGH EFFICIENCY ALTERNATIVE/RENEWABLE POWERED UPS SYSTEM - The disclosure provides an efficient alternative energy uninterruptible power supply (UPS) system having a main first source of power coupled to an electrical load, comprising: a second source of power from stored energy coupled to the electrical load, the second source being adapted to supplement the first source and condition the power from the stored energy to predetermined conditions for the electrical load; an automatic transfer switch (ATS) coupled between the first source and the second source and adapted to control the first source coupling to the electrical load when the first source power is noncompliant with predetermined conditions for the electrical load; and a source of alternative energy coupled downstream of the ATS to the second source, the electrical load, or a combination thereof, wherein the source of alternative energy comprises a source of direct current (DC) power.11-13-2008
20080278006BATTERY COMMUNICATION SYSTEM - An uninterrupted power supply (“UPS”) system is disclosed which uses a battery communication system to communicate to a UPS processor information concerning the status of a battery pack in an array of parallel coupled battery packs. The battery packs provide back-up power for the UPS system. Information about the battery packs is collected by a monitor associated with each of the battery packs. The monitors measure battery pack voltage, currents and temperature and compile information about the battery pack from the measured values. Each monitor prepares a data word representing information about its battery pack. The data words are transmitted to the UPS in response to commands issued by the UPS processor to the monitors.11-13-2008
20080246340Battery integrated power supply (BIPS) - The current state of the art in conventional direct current (DC) power supplies is to provide direct current to a load where the direct current is derived from alternating current (AC) line voltage. There are two inherent problems with such power supplies. If a large transient occurs in the line voltage it can pass through the power supply to the DC output and damage the load. The second problem is that DC power to the load is lost if AC line voltage is lost. An Uninterruptible Power Source (UPS) is sometimes used to provide power to the load in the event of loss of AC line voltage and to provide some degree of transient protection. In many cases the UPS fails to provide the required protection. The Battery Integrated Power Supply (BIPS) circuit claimed in this application provides isolation between the load and the line to minimize damage due to transients and also provides an inherent UPS function.10-09-2008
20080238204Power mains data transfer system - A power mains data transfer system according to one embodiment of the present invention comprises a data transceiver, a first data path to the power mains over which a data path is maintained, and a second, power path connected to the UPS output and provides a connection from which data transceiver operating power is derived. Various further embodiments provide multiple data equipment data input/output and/or power connections, and optional internal switching and filtering features. Thus, according to the present invention, an apparatus is provided for reliable data transfer over power mains even when there is an interruption in the mains' data integrity, e.g. via a UPS device, there along.10-02-2008
20080238206UNIVERSAL INTERFACE FOR BATTERY CHARGER - A battery pack module having a battery and a battery charger suitable for re-charging the battery. The battery pack powers a network terminal such as an optical network terminal (ONT) upon utility-company power failure. Upon return of power from the power utility company the battery charger automatically re-charges the battery. A different battery pack having different battery charger and battery with different battery chemistry can be exchanged for the original battery pack housed within the ONT without requiring any mechanical or electrical modification to the ONT. A battery temperature sensing device in cooperation with a microprocessor, both included with the battery pack, ensures that the recharging of the battery is performed efficiently.10-02-2008
20120293001POWER MANAGEMENT CIRCUITRY IN PERIPHERAL ACCESSORIES OF AUDIO DEVICES - A power management circuitry for a peripheral electronic device includes a power regeneration circuitry, a power selector, a power switch and an audio signal detection circuitry. The power regeneration circuitry receives a continuous periodic sound wave from an audio device and converts the continuous periodic sound wave into an amplified DC electrical signal. The power source selector receives the amplified DC electrical signal and input from a primary power source and provides a power signal output. The audio signal detection circuitry receives the amplified DC electrical signal and transmits a wake-up signal to the power switch circuitry. The power switch circuitry is turned on by the wake-up signal and connects the power source selector to the peripheral electronic device main circuitry and transfers the power signal output to the peripheral electronic device main circuitry.11-22-2012
20100264738INTELLIGENT BATTERY SYSTEM - An intelligent battery system for powering a mobile workstation includes a mounting block having a first battery interface bracket for the releasable attachment of a first battery, a second battery interface bracket for the releasable attachment of a second battery and a third battery interface bracket for the releasable attachment of a backup battery, and a power control circuit functionally integrated with the mounting block and being capable of detecting a change in status of at least one of the first and second batteries and routing the flow of electrical power from the first, second and backup batteries in dependence thereon.10-21-2010
20080272656Apparatus and Method for Distributed Standby Power Provision - An apparatus and method for providing standby power to a node of a distributed system of devices. The apparatus includes: a current manager operable to manage supply of current to a device at the node; a normal current supplier operable to supply normal operating current to the device; and a super capacitor at the node operable to supply standby operating current to the device under control of the current manager when the normal current supplier fails to supply the normal operating current to the device. The apparatus preferably further comprises a switching regulator, operable in electrical communication with the super capacitor and the device, to regulate the standby operating current to the device.11-06-2008
20130119767POWER SUPPLY DEVICE WITH BACKUP POWER - A power supply device with backup power is provided and comprises a main body having multiple power supply output wires; a power input socket being mounted on the main body; a power supply module mounted in the main body being electronically connected to the power supply output wires and the power input socket, and optionally outputting electric power from the power input socket or outputting backup power when the electrical grid is interrupted; a battery module mounted in the main body being electronically connected to the power supply module; and a charging circuit module mounted in the main body being electronically connected to the battery module and the power supply module.05-16-2013
20130214603ELECTRONIC DEVICE, IMAGE PROCESSING APPARATUS, AND DEVICE CONTROL METHOD - An electronic device includes a detecting unit configured to detect cut-off of a main power supply; a power storage unit configured to store power; a sensing unit configured to sense an amount of remaining power of the power storage unit; a determining unit configured to determine whether a functional operation designated by a user is completed with the amount of remaining power sensed by the sensing unit in a cut-off condition of the main power supply detected by the detecting unit; and an operation control unit configured to control execution of the functional operation in the cut-off condition when the determining unit determines that the functional operation is completed with the amount of remaining power.08-22-2013
20090179496Power saving uninterruptible power supply - The power saving uninterruptible power supply (UPS) has a transformer, an automatic voltage regulator (AVR), a charger-and-inverter, a normal mode determination unit and an electric switch. The transformer has a primary side and a secondary side. The primary side is coupled to an alternating current (AC) power source. An AC input terminal of the AVR is coupled to the secondary side of the transformer to acquire an inducted AC power source to regulate the inducted AC power source to output to a load. The charger-and-inverter is coupled to the secondary side of the transformer to acquire a recharged power source to convert to a recharged current. The normal mode determination unit is coupled to the AC power source and the battery to detect a power supply status of the AC power source and battery capacity, so as to further determine whether current operation is normal.07-16-2009
20090179497Uninterrupted Power Supply with IR Control Link - A Universal Power Supply (UPS) protects audio/visual (A/V) components from damage that may occur due to a sudden power loss by first, providing back up power via a battery, and then initiating the normal, that is powered, shut down of the protected component via an infrared control signal. The infrared control signal is learned from the A/V components remote control unit.07-16-2009
20090026841ELECTRIC POWER SUPPLY SYSTEM - An electric power supply system which, in the event of a power failure, is capable of efficiently supplying electric power to household electric appliances in cooperation of a vehicle, including a mechanism supplying electric power outside the vehicle, with a stationary fuel cell system and also includes an electric power supply system using a power converter for converting direct current powers from a vehicle fuel cell and a stationary fuel cell into alternating current powers. The electric power supply system is constructed by a vehicle fuel cell provided on a fuel cell vehicle, a stationary fuel cell provided in a stationary power supply system, and a power converter for converting direct current powers from the vehicle fuel cell and the stationary fuel cell into alternating current powers.01-29-2009
20090127934EMERGENCY CAPACITOR FOR A CONTACTLESS DEVICE - A power supply for a contactless device having a power supply circuit configured to provide an internal power supply voltage, an emergency capacitor circuit having an emergency capacitor, configured to provide a source current during an external field pause, and a power supply regulator configured to regulate the internal power supply voltage and the source current, wherein the emergency capacitor circuit is electrically coupled in parallel with the power supply circuit.05-21-2009
20120104859POWER CONVERSION DEVICE - There is provided a power conversion device having no limitation on a voltage on each of an input side and an output side, being compact, and involving a low loss.05-03-2012
20120104858ELECTRONIC CIRCUIT FOR CONVERTING A MAINS-OPERATED LUMINAIRE INTO AN EMERGENCY LUMINAIRE - An electronic circuit is provided for converting an existing mains-operated luminaire into an emergency luminaire. The mains-operated luminaire includes an LED array and a mains converter for supplying the same with power. An emergency lighting element having an electronic circuit supplies the LED array with power from a storage battery during emergency operation. During the transition to the emergency operation, the circuit disconnects the power supply from the mains converter and subsequently controls the power output of the storage battery and the input power of the LED array by way of a closed loop.05-03-2012
20120104857HIGH-VOLTAGE POWER SUPPLY MODULE AND POWER SUPPLY SYSTEM - A high-voltage power supply module includes a front-end power converting circuit, a first back-end circuit, a second back-end circuit, a ground terminal and a controlling unit. The front-end power converting circuit receives an input voltage and converts the input voltage into a bus voltage. The first back-end circuit receives the bus voltage and outputs a first voltage. The second back-end circuit receives the bus voltage and outputs a second voltage. The first back-end circuit and the second back-end circuit are connected with a connecting terminal. The ground terminal is connected with the connecting terminal. In response to the first voltage and the second voltage, a first control signal and a second control signal are respectively issued from the controlling unit to the first back-end circuit and the second back-end circuit, thereby adjusting the magnitudes of the first voltage and the second voltage.05-03-2012
20120104856BATTERY BALANCING SYSTEM - A battery system comprises a first battery unit; a DC voltage bus; a second battery unit electrically connected to the DC voltage bus; a current-limiting component; and switching circuitry for connecting the first battery unit to the DC voltage bus, where the switching circuitry is configured to electrically connect the first battery unit to the DC voltage bus either directly or through a current-limiting component, depending on an operating parameter of the first battery unit.05-03-2012
20090184583UNINTERRUPTIBLE POWER SUPPLY MODULE - An uninterruptible power supply module is provided. The uninterruptible power supply module comprises an input terminal, a direct-current voltage source, a control module, a control arm-bridge module, an inductive element, a power source selection switch, and a switch element. The switch element is turned on before the power source selection switch is connected to the inductive element so that the direct-current voltage supplied by the direct-current voltage source is modulated by the control arm-bridge module to generate an output alternating current voltage to the load. And the switch element is turned off, i.e. not conducting electricity, after the power source selection switch is connected to the inductive element and the direct-current voltage source. Thereby, the use life of the power source selection switch element and the reliability of the uninterruptible power supply module are both increased.07-23-2009
20090140576Hybrid power system with variable speed genset - A hybrid power system is disclosed. The hybrid power system may include a primary power source configured to provide a primary power, and an energy storage device coupled to the primary power source, the energy storage device configured to store excess primary power provided by the primary power source. The hybrid power system may further include a variable speed genset, the variable speed genset including a secondary power source configured to operate at a variable rotor speed to provide a secondary power responsive to power requirements of a load. The hybrid power system may also include a central controller communicatively coupled to the primary power source, the energy storage device, and the variable speed genset, the central controller configured to control the primary power source, the energy storage device, and the variable speed genset based on the power requirements of the load.06-04-2009
20090140575Supercapacitor and Charger for Secondary Power - A secondary power source system, includes a first unit receiving a primary power input and restricting a current used for charging to a predetermined amount, a second unit including a device providing capacitance, receiving a first output from the first unit with restricted current, a third unit generating a second output of a certain voltage, and a fourth unit performing a logical OR operation with the primary power input, first output from the first unit and second output from the second unit, to generate a single third output of a certain voltage.06-04-2009
20120068542POWER SUPPLY - Provided is a platform with backup power and burst load power needs met using a supercapacitor.03-22-2012
20100264737THERMAL CONTROL FOR AN ENCASED POWER SUPPLY IN AN LED LIGHTING MODULE - Embodiments of the present disclosure provide methods, systems, and apparatuses related to managing a rechargeable battery in an enclosed lighting module. Other embodiments may be described and claimed.10-21-2010
20110221276Regulation of Contribution of Secondary Energy Sources to Power Grid - An energy storage medium is combined with a secondary energy source that supplies power to an electricity distribution grid. The charge and discharge behavior of the energy storage medium is controlled so that rapid increases in the output of a secondary source of energy are absorbed by the storage system, whereas rapid decreases in the output of the secondary source are compensated by discharging stored energy onto the grid. The combined contributions of the secondary source and the energy storage system ensures a rate of change that does not exceed a defined level. Maximum and minimum output power levels for the secondary source can be established to define a normal operating range. The charging or discharging of the energy storage system is also performed when the secondary output power level exceeds or falls below the limits of the defined range.09-15-2011
20090058188DIRECT CURRENT STABILIZING POWER SOURCE APPARATUS - A first primary winding N03-05-2009
20110140525CONFORMAL DEPOSITION OF DIELECTRIC COMPOSITES BY ELECTROPHORESIS - Techniques are generally described herein for the design, manufacture and use of composite dielectric materials. Embodiments include, but are not limited to, methods, apparatuses, and systems. Other embodiments may also be disclosed and claimed. Some techniques described herein include electrophoretic deposition of dielectric particles to conformally form a thin layer of dielectric material for use in energy storage devices. Example energy storage devices include capacitor devices, which in some instances may be used to replace and/or assist in the operation of batteries, ultra-capacitors, and other similar devices.06-16-2011
20110227416DIRECT CURRENT UNINTERRUPTIBLE POWER SUPPLY DEVICE FOR A DATA-PROCESSING SYSTEM WITH AT LEAST ONE PROCESSOR - A direct current backup power supply device of a data processing system with at least one computer supplied with very low voltage whose direct current power supply is connected to an alternating current power supply system using an AC/DC converter of alternating current into direct current includes means for storing electrical energy. The device also includes means for charging the means for storing electrical energy from a part of the direct current provided by the AC/DC converter to the very low voltage power supply of the data processing system, and means for discharging the stored energy in the means for storing electrical energy to the very low voltage power supply of the data processing system, to a noticeably constant predetermined very low voltage, following the detection of a micro-cut of the supply system.09-22-2011
20110227415METHOD AND APPARATUS FOR PROVIDING UNINTERRUPTIBLE POWER - Methods and apparatus for providing uninterruptible power are provided by aspects of the invention. One aspect is more particularly directed to an uninterruptible power supply for providing power to a load. The uninterruptible power supply includes an input to receive input power, an output to provide output power, a plurality of battery modules that provide backup power, a power circuit coupled to the input, coupled to the plurality of battery modules and coupled to the output to provide power derived from at least one of the input power and the backup power to the output, a controller, a return line coupled to the controller and coupled to each of the battery modules, and a first sense line coupled to the controller and coupled to the plurality of battery modules. The controller and each of the battery modules are configured and arranged such that at least one characteristic of the battery modules is determined by the controller based on signals detected by the controller on the first sense line.09-22-2011
20090200868UNINTERRUPTIBLE POWER SUPPLY WITH RECTIFIER FAST WALK IN - In an uninterruptible power supply (“UPS”) having a flywheel storage module, switched rectifying devices of an AC/DC converter of the UPS are walked in after a utility power outage by initially firing the switched rectifying devices at a phase angle where the voltage output by the AC/DC converter to a direct current bus matches a depleted DC bus voltage. In an aspect, the initial phase angle is determined by the equation:08-13-2009
20090230775UNINTERRUPTIBLE POWER SUPPLY FOR A MEDICAL APPLIANCE - An apparatus for metered supply of a liquid medicament having a power supply which not only allows the primary battery to be replaced without interrupting the insulin supply, but also makes it possible to bridge uncontrolled short-term interruptions in the current supply or voltage supply resulting from bouncing of the battery contacts, while also providing an adequate emergency power reserve is disclosed.09-17-2009
20090212632EMERGENCY POWER UNIT - The present invention relates to an emergency power unit for apparatuses, in particular domestic apparatuses, which unit comprises a battery charging device (08-27-2009
20090212631SUBSTATION BASED HIGH VOLTAGE UNINTERRUPTIBLE POWER SUPPLY - A power supply includes an isolation transformer. The isolation transformer includes a primary winding and N secondary windings, where N is an integer. The primary winding receives a first alternating current voltage. Each of the N secondary windings generates a second alternating current voltage. M rectifiers convert the second alternating current voltages to a direct current voltage, where M is an integer. X inverters convert the direct current voltage to a third alternating current voltage, where X is an integer. A reference transformer is electrically coupled between the X inverters and output terminals of the power supply, is connected in parallel with the output terminals, and is configured to provide at least one of a neutral reference and a ground reference.08-27-2009
20090243391MULTI-FUNCTIONAL POWER SUPPLY WITH POWER OVER ETHERNET SUPPORT, INTEGRATED MONITORING AND SUPPLEMENTAL POWER SOURCE BACKUP - A multi-functional power supply that is advantageously suitable for distributed networking environments, such as the deployment of wireless networks. The power supply provides PoE ports for powering various devices and includes redundancy, back-up support, failover detection and monitoring/reporting. Thus, the power supply is particular well suited for a router or switch type environment that enables powered devices to be located in strategic locations without being limited by the provision of AC power outlets.10-01-2009
20090256426SYSTEM AND METHOD FOR MANAGING POWER SUPPLY TO A CIRCUIT BREAKER CONTROL UNIT - A system for controlling power in a circuit breaker trip unit is disclosed. The system includes: a user interface operably coupled to the trip unit and having a plurality of input keys; a power conditioner operably coupled to the user interface and operably coupled to a battery power source and an external power source; and a power control circuit. The power control circuit is configured to automatically electrically connect the battery power source to the power conditioner in response to activation of any of the plurality of input keys, and in the absence of an electrical connection between the external power source and the power conditioner.10-15-2009
20110227414CELL SITE POWER SYSTEM MANAGEMENT, INCLUDING BATTERY CIRCUIT MANAGEMENT - Systems, apparatuses, and methods for managing battery circuits in systems such as wireless communications service base stations are disclosed. An example apparatus includes a battery circuit having multiple strings of one or more serially connected batteries. The apparatus may be configured to rotate between battery strings such that one or more strings are maintained at or near an upper threshold while other string(s) are disconnected from the maintained string(s). The apparatus may also be configured to charge the battery circuit, to test the battery circuit, and to handle power failures.09-22-2011
20090021077Device, system and method for charger switch adaptor - A system to connect an electrical device to a switch which connects or disconnects the device to the power source, and providing power to the charger and/or another operational circuit of the device, for example, keep-alive circuit, with no dependency in the state of the switch.01-22-2009
20100156183FIELD DEVICE FOR A PROCESSING PLANT AND METHOD FOR SUPPLYING THE FIELD DEVICE - In a method or device for powering a field device for a processing plant, the field device is driven by an electrical power supply so that the field device outputs a process signal. A required power level of the electronic circuit is determined for outputting the process signal. A portion of an electrical power of the power supply exceeding the required power level is stored.06-24-2010
20100156184BATTERY CHARGING SYSTEM FOR MOBILE AND ACCESSORY DEVICE - Various embodiments of the present invention are directed at a method and system for recharging batteries for wireless electronic devices. According to one embodiment, a battery charging and monitoring system is disclosed. The system includes a host machine providing a plurality of charging slots and a plurality of wireless devices coupled to and powered by a plurality of batteries. The host machine is adapted to communicate with the plurality of wireless devices through a plurality of wireless links to monitor the plurality of batteries coupled to the wireless devices. According to another embodiment, an electronic device is disclosed. The electronic device is adapted to couple with at least a rechargeable battery and to negotiate with the rechargeable battery for an agreed range of power parameters. The electronic device is further adapted to accept power from and to provide power to the rechargeable battery at the agreed range of power parameters.06-24-2010
20100156182GARAGE DOOR OPENER WITH SECONDARY POWER SOURCE - A garage door opener having a secondary power source. The garage door opener includes a drive unit and an opening mechanism. The drive unit is configured to be coupled to an external AC power source and to a removable battery pack that provides DC power. The drive unit includes a power unit, a motor coupled to the power unit, and a drive mechanism coupled to the motor. The opening mechanism is coupled to the drive mechanism and configured to open and close a garage door. When AC power is not available, the power unit uses the DC power to operate the garage door opener.06-24-2010
20100013315Device And Method For Supplying Power To A Critical Load - A power supply device for high voltage includes first and second back-to-back voltage converters, wherein an electrical energy store is connected to the DC side of the first voltage converter, a load is connected to the AC side of the second voltage converter and a generator is connected to the second converter to provide momentary power during failures.01-21-2010
20100013313DC UPS CONFIGURED AS INTRINSIC POWER TRANSFER SWITCH - A direct current (DC) uninterruptible power supply (UPS) configured as an intrinsic power transfer switch is provided. The DC UPS includes first and second inputs. First and second rectifiers are coupled to the first and second inputs. A common node is coupled to the first and second rectifiers. At least one DC output is coupled to the common node. The at least one DC output is adapted for connection to at least one electrical load. The first input is adapted for connection to a first electrical service, and the second input is adapted for connection to a second electrical service. The DC UPS continues to supply power to the at least one electrical load in the event of a loss of either the first or second electrical services.01-21-2010
20100181836UNINTERRUPTIBLE POWER SUPPLY APPARATUS - An uninterruptible power supply (UPS) apparatus is disclosed. The UPS apparatus comprises a UPS main body and a support. The UPS main body includes a power supply unit for receiving AC power from a power source and converting AC power to DC power, a battery unit for receiving DC power from the power supply unit and providing DC power to a load, and a case for housing the power supply unit and the battery unit therein, wherein a bottom surface of the case has a first width. The support is used to support the UPS main body thereon to enable the UPS apparatus to stand on a desk, wherein a bottom surface of the support has a second width larger than the first width. Therefore, the UPS apparatus can be served as a desktop DC UPS.07-22-2010
20100244569FLUORESCENT FORM FACTOR LIGHTING MODULE WITH WIRELESS ALTERNATING CURRENT DETECTION SYSTEM - Embodiments of the present disclosure provide methods, systems, and apparatuses related to lighting system with wireless alternating current detection system. Other embodiments may be described and claimed.09-30-2010
20100237702EMERGENCY LIGHTING METHODS AND SYSTEMS - Described herein are systems and methods of emergency lighting comprising one or more light emitting diode (LED) lamps with a low-maintenance or maintenance-free battery. In one aspect, the battery is a sealed lead-acid battery. In one aspect, the battery is an absorbent glass mat (AGM) battery. In one aspect, the LED lamps can be a part of a LED assembly that can include an integrated voltage regulator. In one aspect, the one or more lamps are parabolic aluminized reflector luminares, or PAR lights such as PAR 46 light assemblies.09-23-2010
20080211309Systems and methods for modular battery replacement in aircraft - A modular aircraft emergency backup battery system and methods for operating the system as well as removing and replacing the modules within the system are described. The system includes a module cabinet enclosure that positions and interconnects the modules. A wiring harness provides the necessary electrical connections to and from the aircraft avionics to recharge the batteries within the system to allow the system to provide a source of power when battery backup is required. The cabinet enclosure provides positioned connections for one or more battery cell modules and one or more power control circuitry modules. A hinged front panel allows access to the battery cell modules and provides a switch and an indicator for operation of a test circuit. The modular enclosure is positioned in place of existing aircraft emergency battery backup systems and connects to the aircraft within the same space.09-04-2008
20100225171APPARATUS AND METHODS FOR POWERING MOBILE DEVICES - Embodiments of a system, topology, and methods for providing power to mobile devices are described generally herein. Other embodiments may be described and claimed.09-09-2010
20120193988HYBRID INVERTER GENERATOR - A hybrid engine and battery generator and a method of operating the same. The generator is controlled to operate in at least three modes: a battery-only mode, a battery charging mode, and a boost mode. In the battery-only mode, the engine is off and an internal battery of the generator is used by an inverter to generate AC output. In the battery charging mode, the engine generates DC power, via an alternator and rectifier, which is used to charge the battery and to supply power to the inverter to generate AC output. In the boost mode, the battery and the engine generate DC power that is used by the inverter to generate an AC output with increased wattage, relative to the battery-only mode and battery charging mode. The generator automatically switches between the modes based on battery level and load demand.08-02-2012
20100219688DC Power System for Household Appliances - A DC power system is provided to generate the power from renewable energy and directly supplies the DC power to DC household appliances, thus saving energy that would be wasted during the conversion of DC to AC and back to DC and saving the cost of a rectifier or power factor corrector. The DC power system includes a generator, a DC/DC converter, a battery bank, a bi-directional inverter, a DC load and a controller.09-02-2010
20080315686System and method of detecting a battery fault - A method of controlling a multiple battery system in a vehicle electrical system is provided. The method steps include polling an at least one sensor in the multiple battery system monitoring the multiple battery system for an at least one reading and detecting an abnormal reading from said at least one sensor. And then communicating the results of said detection step to an operator or a Network Operations Center switching, upon a command from the operator, the Network Operations Center or a controller switching an at least one switch from a first of an at least two operating positions engaging a main battery to a second of an at least two operating positions engaging an at least one auxiliary battery. The system then confirms the operation of the vehicle electrical system and engages either the main battery or the auxiliary battery, but not both, to operate the vehicle electrical system.12-25-2008
20090278406Portable Power Supply - A system includes a power device and an electronic device. The electronic device includes a rechargeable power source and device electrical circuitry. The power device supplies power to the rechargeable power source according to at least one of a charging mode, an extended use mode, and a defined energy mode.11-12-2009
20090322152ISOLATION CONTROL HIGH SPEED TRANSFER SWITCH FOR UNINTERRUPTIBLE POWER SUPPLY, POWER SUPPLY SYSTEM USING THE SWITCH AND ISOLATION CONTROL HIGH SPEED TRANSFER SWITCHING METHOD - Disclosed is a UPS isolation control high speed transfer switch for switching a power supply path of a UPS to a bypass line and a power supply system equipped with the high speed transfer switch. The switch is isolated from the UPS and detects the output power of UPS, and switches a power supply path from a normal power line to the bypass line, by turning off the transfer switch of the bypass line after turning off an output breaker of a normal power line when the output power is deviated from a preset normal range. Furthermore, the switch performs a switching to the bypass line only when the output breaker of the UPS is actually turned off, after confirming the turn-off of the output breaker when switching the power supply path to the bypass line.12-31-2009
20080309167Power-saving circuit and method thereof - The present invention discloses a power-saving circuit applied in a portable electronic device, which includes a voltage input module for outputting a first enable signal after receiving an external voltage, a power switch for being operated by a user to output a second enable signal and a start signal, a switching module electrically coupled to the voltage input module and the power switch for selectively receiving the first and second enable signals to determine whether or not to turn off the switching module, and a voltage conversion module electrically coupled to the switching module for receiving one of the external voltage and a battery voltage from the voltage input module when the switching module is closed. Thus, the battery voltage cannot be sent to the portable electronic device when the switching module is opened.12-18-2008
20080278004ELECTRONIC APPARATUS, POWER SUPPLY SYSTEM, AND METHOD FOR SUPPLYING ELECTRIC POWER - An electronic apparatus includes a first terminal, a second terminal, elements, and a supply unit. The supply unit supplies electric power supplied from the first terminal and electric power supplied from the second terminal to the elements when the first and second terminals are connected to the first and second batteries, respectively. The electric power input to the second terminal is supplied to the elements after the first battery is detached from the mounting portion and the second terminal is connected to the second battery through the cable. The electric power input to the first terminal and the electric power input to the second terminal are supplied to the elements after the first and second terminals are connected to the second battery. The electric power input to the first terminal is supplied to the elements after the cable connected to the second battery is detached from the second terminal.11-13-2008
20080272655Uninterruptible Power Supply With Remote Capabilities - An Uninterruptible Power Supply (UPS) with remote capabilities, and systems and methods of implementing the same, are disclosed. An exemplary UPS system with remote capabilities includes a battery unit and a remote unit configured to be physically separated from the battery unit so that a user can electrically connect an electronic device to the battery unit without having to physically connecting the electronic device directly to the battery unit. The UPS system also includes a user interface on the remote unit. The user interface is operable to output status of the battery to a user even if the user is separated from the battery unit.11-06-2008
2011010916377-78-93 PATRIOT SYSTEMS - A backup energy supply system including: a self-charging system with a wiring assembly; a plurality of batteries for providing electrical storage and converting chemical energy directly to electrical energy; a plurality of inverters for converting direct current to alternating current; at least one electrical outlet; at least one on/off switch all enclosed within an aesthetic furniture item for interior storage and use. The device may be used to power electrical appliances during power outage periods.05-12-2011
20100295374METHOD AND APPARATUS FOR PROVIDING UNINTERRUPTIBLE POWER - At least one aspect is directed to an uninterruptible power supply that includes a first input having an input line connection and an input neutral connection to receive a first input voltage from a first voltage source, a second input to receive a second input voltage from a second voltage source, and a boost circuit configured to provide a positive output DC voltage with respect to the input neutral connection and a negative output DC voltage with respect to the input neutral connection in both a line mode of operation and a backup mode of operation. The power supply also includes a first connection circuit to couple the first input to the boost circuit in the line mode of operation, and a second connection circuit to couple the second input to the boost circuit in the backup mode of operation, the second connection circuit being configured to isolate the second voltage source from the input neutral connection in the line mode of operation.11-25-2010
20100308659POWER SUPPLY DEVICE - A power supply device is used for an apparatus which includes a power generator and a parallel assembly including a main power supply and a load. The power supply device includes a input port connected to an output terminal of the power generator, an output port connected to the parallel assembly, an electric storage element charged with electric power generated by the power generator, a switching unit, a current switcher for restricting a current flowing from the main power supply to the electric storage element, a controller for controlling the power generator such that the voltage of the output port becomes a predetermined voltage. The switching unit is connected to the first input port, the output port, and the electric storage element. The switching unit connects the electric storage element, the power generator, and the parallel assembly in parallel to each other when the electric storage element is charged with the electric power generated by the power generator. The switching unit connects the electric storage element, the power generator, and the parallel assembly in series to each other when the electric storage element is discharged to supply electric power stored in the electric storage element to the parallel assembly. This power supply device can provide an apparatus including only one power generator with a regenerating function.12-09-2010
20100301675UNINTERRUPTIBLE POWER SUPPLY AND METHOD FOR ENABLING THE SAME TO SAVE ENERGY - An uninterruptible power supply configured to automatically detect a load level and automatically power off and disable power supply or automatically power on and enable the power supply based on a detected load level, so that energy of a backup source of the uninterruptible power supply is not wasted and a life-cycle of the uninterruptible power supply is extended.12-02-2010
20100301674CONTROL CIRCUIT AND ELECTRONIC DEVICE INCLUDING THE SAME - This invention provides a control circuit and an electronic device including the same. The control circuit is disposed in an electronic device for connecting a power supply. The electronic device includes a battery module. The control circuit includes a detecting unit, a processing unit, a control unit, and a switch. When the power supply is connected to the electronic device, the detecting unit provides a detecting result. The processing unit determines a type of the power supply according to the detecting result. When the processing unit determines that the power supply is a solar power adapter, the processing unit outputs a first control signal and a turn-off signal. The control unit controls operation of the battery module according to the first control signal. Further, the switch is turned off according to the turn-off signal, preventing the power supply from supplying power to the electronic device.12-02-2010
20110127836System and Methods to Extend the Service Life of Portable Devices - A method for extending the service life of a portable device includes monitoring a battery of a portable device; identifying a problem bank; reconfiguring a connection schema for the battery to replace the problem battery bank with at least one spare bank; conditioning or exercising the problem bank; connecting the portable device to a power supply to recharge the problem bank; and reconnecting the recharged or repaired bank according to the connection schema without the at least one spare bank. A method for extending the service life of a portable device includes monitoring power consumption of at least one of the hardware or software of a portable device; and reconfiguring the connection schema of the battery banks to redistribute power consumption of at least one of the hardware or software.06-02-2011
20090121551Battery backup device - A battery backup device is provided. The battery backup device includes a first connector; a second connector; a data line which transmits data provided from an external source via the first connector to the second connector; a storage unit which is connected to the data line and selectively stores the data; and a charging unit which receives and becomes charged with a first power supply voltage provided from the external source via the first connector, selectively adjusts a voltage level of the first power supply voltage, and outputs a second power supply voltage to the second connector.05-14-2009
20100133910UNINTERRUPTIBLE POWER SUPPLY - An uninterruptible power supply includes an input switching circuit, an AC-to-DC converting circuit, a bus capacitor, an energy storage unit, a charging circuit, a DC-to-DC converting circuit, and a system control circuit. The input switching circuit receives an input AC voltage. The AC-to-DC converting circuit is used for converting the input AC voltage into a bus voltage. The energy storage unit is used for storing electric energy. The charging circuit is used for charging the energy storage unit. The DC-to-DC converting circuit is used for converting the energy storage unit connecting node voltage into a regulated DC voltage. The system control circuit is used for controlling operations of the uninterruptible power supply. When the uninterruptible power supply is initiated, the AC-to-DC converting circuit is disabled and the bus capacitor is charged by the DC-to-DC converting circuit under control of the system control circuit.06-03-2010
20110006607HYBRID POWER SUPPLY APPARATUS FOR DATA CENTER - A hybrid power supply apparatus for data center includes: one or more power sources; and an uninterruptible rack level power supply unit supplied with an Alternating Current (AC) power from said one or more power sources, and configured to supply Direct Current (DC) power to a rack, the power supply unit supplying the DC power to the rack without interruption when supply of the power from said one or more power sources is stopped. The apparatus further includes a node provided in the rack and supplied with the DC power from the uninterruptible rack level power supply unit.01-13-2011
20110018349HVAC/R SYSTEM HAVING POWER BACK-UP SYSTEM WITH A DC-DC CONVERTER - An HVAC/R system is configured with power storage for power back-up to maintain substantially uninterrupted power in the case of a main power failure. The power back-up system has a DC power source configured to be recharged, and provides power to the HVAC/R components.01-27-2011
20110109162Converter device and uninterruptible power supply provided with such a device - A converter to supply an AC voltage and current from three DC voltages comprising two switching units provided with first switching means connected between an input and a switching output, said converter comprising, for each switching unit, second switching means connected between said switching unit and a modulated signal output, and a switching aid circuit, said converter comprising control means acting on the second switching means associated with the switching unit that is connected to the voltage input of opposite sign to the sign of said AC voltage to establish turn-off of said second switching means when said AC voltage and said AC current are of opposite signs.05-12-2011
20110109161UNINTERRUPTIBLE POWER SUPPLY - An uninterruptible power supply with an input terminal and an output terminal, a main switch connected to the input terminal, an input filter circuit connected to the main switch, a rectifier circuit connected to the input filter circuit, a main capacitor connected to the rectifier circuit, a switching device connected to the capacitor and the output terminal, a voltage boost circuit connected to the capacitor and a battery input terminal, a slope control circuit connected to the voltage boost circuit, a slope selection circuit connected to the slope control circuit, and a control board connected to the slope selection circuit, where the control board has a central processing unit and memory.05-12-2011
20090066161Power management systems with current sensors - A power management system includes a power management unit (PMU) and a current sensor. The PMU is operable for controlling a first power source and a second power source. The second power source is operable for being charged by the first power source via a charging path. The current sensor has a first terminal coupled to the first power source and the second power source and has a second terminal coupled to the second power source via the charging path. The current sensor is operable for sensing a first current flowing from the first power source through the current sensor and for sensing a second current flowing from the second power source through the current sensor.03-12-2009
20110031811CIRCUITS AND METHODS FOR CONTROLLING SUPERCAPACITORS AND KITS FOR PROVIDING THE SAME - A circuit can include a supercapacitor switch including first and second terminals, that is configured to electrically couple the terminals to one another in a closed position and to electrically de-couple the terminals from one another in an open position responsive to a supercapacitor switch control signal. A first supercapacitor has a first terminal that is electrically coupled to the first terminal of the supercapacitor switch and has a second terminal that is electrically coupled to a reference voltage. A second supercapacitor has a first terminal that is electrically coupled to the second terminal of the supercapacitor switch and has a second terminal that is electrically coupled to the reference voltage.02-10-2011
20110043043BATTERY BACKUP SYSTEM WITH SLEEP MODE - The present invention concerns an apparatus comprising a charger circuit and a control circuit. The charger circuit may be configured to generate a first power down control signal and a second power down control signal in response to (i) a first charge signal, (ii) a second charge signal, (iii) a supply voltage, and (iv) a host control signal. The control circuit may be configured to generate the first charge signal and the second charge signal in response to a first battery signal and a second battery signal. The control circuit may enter a power down state in response to the host control signal initiating the power down state.02-24-2011
20110043042UNINTERRUPTIBLE POWER SUPPLY - An uninterruptible power supply (UPS) system includes an AC power input configured to receive AC power from a single-phase AC power source or a multi-phase AC power source, a DC power source, an output circuit including a power output, a controllable switch configured to selectively couple at least one of the AC power input and the DC power source to the output circuit, and a processor coupled and configured to affect operation of the output circuit depending upon which of single-phase and multi-phase operation of the UPS is indicated.02-24-2011
20110043040Ballast For Fluorescent Emergency Lighting - An emergency ballast for a fluorescent lamp includes a rechargeable battery. The emergency ballast also includes a circuit for receiving an electrical current and providing a recommended charging voltage to the battery. The electrical current is one of two amplitudes, and the circuit provides a charge to the battery without regard to the amplitude of the electrical current. The first amplitude of the electrical current can be 120 volts, and the second amplitude can be 277 volts. The emergency ballast includes a capacitor electrically coupled to the circuit that provides an additional voltage to the rechargeable battery when the electrical current is 120 volts. The emergency ballast also includes a switch for electrically decoupling the capacitor from the circuit when the electrical current is 277 volts.02-24-2011
20110043041Sinusoidal Alternating Current Ballast For Fluorescent Emergency Lighting - A ballast for a lamp has a battery that provides direct current in response to a loss of power. The ballast has a conversion circuit that is configured to receive the direct current from the battery and convert it into alternating current that is provided to a lamp. The alternating current is substantially sinusoidal, and has a current crest factor of 1.7 or less. The conversion circuit can use a push-pull topology. The ballast can also include a cathode-heating circuit for pre-heating a cathode associated with the lamp. The cathode-heating circuit pre-heats a cathode of the lamp by increasing the current output of the conversion circuit. The ballast can also include circuitry for converting mains power to power appropriate to illuminate the lamp.02-24-2011
20110241427PORTABLE ELECTRONIC DEVICE - A portable electronic device includes a transformer unit, a power transmission unit electrically connected to the transformer unit, a rechargeable battery electrically connected to the power transmission unit; and an inner circuitry electrically connected to both the power transmission unit and the battery. The transformer unit regulates a voltage provided by an exterior power supply to a predetermined value, and the power transmission unit receives the regulated voltage and selectively transmits the regulated voltage to the battery or to the inner circuitry according to the value of the regulated voltage.10-06-2011
20110115296STANDY POWER REDUCTION - A standby power system for an appliance having a power input coupled to a main power source includes a power enabling device coupled between the main power source and power input of the appliance, a standby power state sensing device coupled to the power enabling device, and a power restore device coupled to the power enabling device.05-19-2011
20110127837POWER CONVERSION APPARATUS - A power conversion apparatus includes an inverter for converting DC power to AC power for supply to a load, a converter for converting AC power from an AC power supply to DC power for supply to the inverter, a DC voltage converter for converting a voltage value of power stored in a storage battery to supply DC power from the storage battery to the inverter when power supply from the AC power supply is faulty, and a filter including a reactor and a capacitor, for removing harmonics generated by the inverter. The inverter includes a three-level circuit which is a multi-level circuit.06-02-2011
20110018348HVAC/R BATTERY BACK-UP POWER SUPPLY SYSTEM HAVING A VARIABLE FREQUENCY DRIVE (VFD) POWER SUPPLY - A power supply for an HVAC/R system is configured to provide back-up power functionality for situations when the main source of power fails. The power supply includes a DC power bus which receives power from the main source of power as well as a back up source. When the main source fails the back up source provides power to the DC power bus. Connected to the DC power bus is a variable frequency drive power supply (VFD). The VFD is configured to provide power to the components of the HVAC/R system based on power received from the DC power bus.01-27-2011
20100164290UNINTERRUPTIBLE POWER SUPPLY AND METHOD OF ENERGY SAVING THEREOF - An uninterruptible power supply and a method of power saving thereof the uninterruptible power supply includes a switch and a backup power generator. The switch is coupled to a public power and a load, and backup power generator is coupled to the switch, the public power, and the load. Furthermore, the backup power generator is for controlling the switch and providing backup power for the load when the public power fails. Additionally, the backup power generator stops working in response to a trigger signal outputted from the load while the load is disabled.07-01-2010
20090322153ARRANGEMENT AND METHOD FOR PROVIDING POWER TO A CIRCUIT USING SWITCHED CAPACITOR TECHNIQUES - Switching power supplies are implemented using a variety of methods and devices. According to an example embodiment of the present invention, an arrangement provides power to a circuit by selecting between a first supply and a second supply. The arrangement includes a first circuit that charges a first capacitive element using the first supply and generates a first reference voltage by distributing charge between the first capacitive element and a second capacitive element. The arrangement also includes a first comparator that compares the first reference voltage to a second reference voltage derived from the second supply and a second comparator that compares the first reference voltage to a third reference voltage. The arrangement further includes a power control circuit that selects one of the supplies based on the results of the comparisons.12-31-2009
20110127835BATTERY PACK AND UNINTERRUPTIBLE POWER SUPPLY HAVING THE SAME - Provided are battery packs capable of preventing electrical shorts due to incorrect arrangement of polarities of the battery packs during assembly of an uninterruptible power supply (UPS) having the battery packs and a UPS having the battery packs. The battery pack includes: a casing housing a plurality of cells; first and second terminals arranged to protrude outwardly from a first surface of the casing and having opposite polarities; a first attachment unit formed on a second surface of the casing; and a second attachment unit formed on a third surface of the casing, disposed opposite the second surface of the casing, wherein the first attachment unit and the second attachment unit are not symmetrical to each other.06-02-2011
20100237701Controlling method of a battery mode of a uninterruptible power supply for an active power factor corrected load - A controlling method of a battery mode of a UPS for an active PFC power supply has following acts of monitoring the AC power source and determining whether the AC power source is terminated or not; wherein if a determining result is positive go to next act; and switching to the battery mode and outputting a square wave power source. The square wave power source has a period, and each half of the period is alternately constituted by at least two ON times and at least two OFF times, and each of the at least two OFF times is equal or smaller than a hold-up time of the active PFC load. Therefore, the voltage of the bulk capacitor of the active PFC power supply at discharge condition is not lower than the low threshold voltage, since the OFF time of the square wave signal will be kept to be equal or less than the hold-up time.09-23-2010
20110241430METHOD FOR CONTROLLING SYSTEM GAIN OF UPS - The present invention discloses a control method for the system gain of a UPS, which includes the steps of: S1: detecting a PFC unit so as to determine whether to start an LLC, and if so, then going to step S2; otherwise, going to step S8; S2: starting the LLC; S3: detecting the mains supply so as to determine whether to switch from the mains supply to a battery, and if so, then going to step S4; otherwise, going to step S5; S4: performing a frequency-fixed adjustment on the LLC with an operating frequency larger than a resonating frequency by a preset magnitude while clearing an integral quantity within a first preset time T1; and performing a frequency-fixed adjustment on the LLC with an operating frequency equal to the resonating frequency while clearing the integral quantity between the first preset time T1 and a second preset time T2, and going to step S8; S5: determining whether the LLC-in-series resonant converter has an overload, and if so, then going to step S6; otherwise, going to step S7; S6: performing a frequency-fixed adjustment on the LLC-in-series resonant converter with the operating frequency equal to the resonating frequency while clearing the integral quantity; and going to the step S8; S7: performing a normal PI adjustment on the LLC-in-series resonant converter; and S8: Ending. The operation condition of the PFC is detected in real time, the LLC is started when the PFC becomes abnormal, and the LLC is adjusted in response to a load during operating so that the system gain is maintained in a monotonously step-down region of a ZVS region.10-06-2011
20110241429BATTERY BACKUP SYSTEM - A METHOD FOR A COFFEEMAKER - A power backup system for a coffeemaker comprising: an AC power source; a battery charger, where the battery charger receives power from the AC power source; a DC power source, where the DC power source remains charged by the battery charger; and a DC/AC inverter, where said inverter inverts the AC power to DC power upon activation of the power backup system and supplies power to the coffeemaker. The power backup system may further include a clock/timing device, where the clock/timing device sets a brewing sequence for the coffeemaker and receives power from AC power source, or if AC power is unavailable the DC power source. The power backup system may also include an automatic relay, where the automatic relay connects the DC/AC inverter to the timing device and other electrical components of the coffeemaker.10-06-2011
20110241428UNINTERRUPTIBLE POWER SUPPLY AND POWER SUPPLYING METHOD THEREOF - An uninterruptible power supply includes plural power modules and a controlling module. The power modules are electrically connected with a power source, an energy storage unit and a load for converting an input voltage into an output voltage. The controlling module is electrically connected with the plural power modules and the energy storage unit for detecting a storage voltage of the energy storage unit and dynamically adjusting the output voltage of the plural power modules according to the storage voltage of the energy storage unit. If the controlling module is abnormal, the magnitude of the output voltage is maintained at a constant voltage value.10-06-2011
20110084554LED LAMP - An LED lamp includes an optical part, a heat dissipation member and an electric part. The optical part includes a hollow light penetrable tube and an LED module received in the tube. The heat dissipation member is received in the tube to mount the LED module thereon. The electric part include a circuit board and a rechargeable battery arranged in the tube, and two end covers arranged at two opposite ends of the tube. The LED module is provided with at least one first LED and at least one second LED. The at least one first LED and the at least one second LED cooperatively function as a main light source to provide normal illumination when an external AC power source is supplied normally. The at least one second LED independently function as an auxiliary light source to provide emergency illumination when the external AC power source is interrupted.04-14-2011
20100038965Emergency Lighting Device For Operating A Light Source, In Particular An LED - An emergency lighting device (02-18-2010
20100013311INTRINSICALLY BALANCED DIRECT CURRENT UNINTERRUPTIBLE POWER SUPPLY - An intrinsically phase-balanced direct current (DC) uninterruptible power supply (UPS) is provided. The DC UPS includes first, second, and third alternating current (AC) phase inputs. First, second, and third rectifiers are coupled to the first, second, and third AC phase inputs. A common node is coupled to the first, second, and third rectifiers. At least one DC output is coupled to the common node. The at least one DC output is adapted for connection to at least one electrical load. A battery is coupled to the common node. A blocking diode is coupled between the battery and the common node.01-21-2010
20100038964Method for Supplying Energy to a Field Device in Automation Technology - A method for supplying energy to a field device of process automation, which servers for registering a chemical and/or physical property of a process medium, energy required for operating the field device is obtained by means of the process medium.02-18-2010
20110175451POWER STORAGE APPARATUS, METHOD OF OPERATING THE SAME, AND POWER STORAGE SYSTEM - A power storage system and method are disclosed. The system is connected to a load, a power grid, and a power generation system. When the grid is in an abnormal state, a battery is simultaneously charged with power from the power generation system and used to supply power to the load.07-21-2011
20120146419POWER SUPPLY SYSTEM INCORPORATING UPS - An exemplary power supply system includes a main power supply, an uninterruptible power supply (UPS) connected to the main power supply, a control unit connected to the UPS, and a server unit connected to the UPS through a power distribution unit. The UPS includes a rectifier connected to the main power supply, a power storage module connected to the rectifier, a switch connected to the rectifier, and an inverter connected to the rectifier and in parallel connection with the switch. The control unit includes a sensor and a control element connecting the sensor with the switch. The sensor can detect an environment around the server unit to produce different signals to the control element, to thereby control the UPS to output DC or AC by turning the switch on or off.06-14-2012
20110148208DISPLAY DEVICE AND PORTABLE TERMINAL - In order to increase the continuous operating time of a display device driven by a battery or the like, and a portable information terminal using the same, the volume and weight of the battery are increased. Thus, there arises a trade-off between the increased capacity of the battery and the portability of the device/terminal. Therefore, the invention provides a display device with portability ensured, which is capable of operating continuously for long periods and a portable information terminal using the same. In the display device, TFTs and an RFID tag are formed over the same insulating substrate. The RFID tag detects signals from a reader/writer, and generates DC power based on the signals. While the RFID tag is detecting signals, the display device is driven by the DC power generated in the RFID tag.06-23-2011
20110101781BATTERY BACKUP SYSTEM, METHOD OF USE, AND METHOD OF MANUFACTURING - Some embodiments include an electrical system. In many embodiments, the electrical system can comprise a system input configured to receive a first power signal from an external power source. In the same or different embodiments, the first power signal can comprise a first voltage. In the same or different embodiments, the electrical system can comprise a system output electrically coupled to the system input. In the same or different embodiments, the electrical system can comprise a charger module electrically coupled to the system input. In the same or different embodiments, the electrical system can comprise a resistive component coupled between the system input and the system output. In the same or different embodiments, the electrical system can comprise a power storage device electrically coupled to the system output and to the charger module. In the same or different embodiments, the electrical system can comprise a sense circuit electrically coupled across the resistive component and electrically coupled to the charger module. Other embodiments are disclosed.05-05-2011
20110101782DEPLOYABLE POWER SUPPLY SYSTEM - A deployable power supply system is provided. A primary casing and a moveable panel includes a first side section, a second side section, a front side, and a rear side, the moveable panel having a top panel forming a top portion of said housing. The first side section of at least one of the primary casing and the moveable panel includes a first upper portion and the second side section of at least one of the primary casing and the moveable panel includes a second upper portion. The first upper portion and the second upper portion extend beyond the top portion of the housing to form a cavity therebetween, the top panel being disposed within said cavity.05-05-2011
20110101780John-son power surge restorer battery powered electrical power supply - The present invention provides a portable rechargeable battery powered backup system for electrical devices, comprising a portable, multi-outlet power source designed to provide electrical current further comprising a four-wheeled pushcart having two shelves or compartments for supporting two rechargeable Lithium-Ion batteries05-05-2011
20110068630POWER SUPPLY COOPERATION SYSTEM AND UNINTERRUPTIBLE POWER SUPPLY DEVICE - A UPS device is coupled to an external power source and another UPS device through a power line. The UPS device includes: a storage battery in which power from the external power source is charged, the UPS device being configured to be capable of supplying power charged in the first storage battery to the power line coupled to the UPS device; a communication unit that communicates with the another UPS device through the power line; and a determination unit that determines whether the power line is in normal condition or not based on whether a communication between the UPS device and the another UPS device has been successfully established or not. Power is supplied from the storage battery to the power line that has been determined to be in normal condition by the determination unit.03-24-2011
20090026843PORTABLE APPARATUS OF EMERGENCY POWER SUPPLY AND BATTERY CHARGER - The present invention relates to a portable apparatus combining a battery charger with an emergency power supply, including: a hand-held body; an AC input section, a battery section; a DC output section; an LED display section; and a control circuit section. Accordingly, the inventive portable apparatus combining a battery charger with an emergency power supply functions as an adapter for supplying electric power to an electronic device and a charger for charging a battery contained therein when being applied with an external power supply, and functions as an emergency power supply for supplying proper electric power to the electric device using a built-in charged battery when being not applied with the external electric power supply.01-29-2009
20100244568LIGHTING MODULE WITH WIRELESS ALTERNATING CURRENT DETECTION SYSTEM - Embodiments of the present disclosure provide methods, systems, and apparatuses related to lighting system with wireless alternating current detection system. Other embodiments may be described and claimed.09-30-2010
20100301673ARRANGEMENT AND APPROACH FOR COUPLING POWER SUPPLIES USING CONTROLLED SWITCHING TECHNIQUES - Power supplies are switched in a manner that mitigates parasitic shorts. According to an example, a control circuit (e.g., 12-02-2010
20100295375ACCUMULATION DEVICE - When an electricity storage unit is being charged or discharged, a control circuit obtains efficiency Efn of a DC/DC converter based on input/output voltage value Vi, input/output current value I and electricity storage unit voltage value Vc detected by an input/output voltage detection circuit, an input/output current detection circuit, and an electricity storage unit voltage detection circuit, respectively. By using temperature T a detected by temperature sensor, when efficiency Efn lies out of predetermined range (from Emin to Emax) according to input/output voltage value Vi, input/output current value I, electricity storage unit voltage value Vc and temperature T, at least any one of an electricity storage unit and the DC/DC converter is determined to be abnormal.11-25-2010
20100066173Power Supply Apparatus - A power supply apparatus includes a coupling capacitor arranged to be connected on its first end to ground; a transformer including a primary winding and a secondary winding; a first rectifier bridge connected in parallel with the secondary winding; and an energy storage, to which a load is arranged to be connected. The primary winding is arranged to be connected between a second end of the coupling capacitor and a high voltage transmission line such that all current between the second end of the coupling capacitor and the high voltage transmission line passes through the primary winding. The energy storage is arranged to be charged by means of a current passing through the first rectifier bridge. Furthermore, the power supply apparatus includes a bypasser. A corresponding three-phase apparatus is also presented.03-18-2010
20090039707CAPACITOR DEVICE AND VEHICULAR POWER SUPPLY DEVICE - A capacitor device includes a normally open internal relay provided on an electric wire of a capacitor. The internal relay can be closed by supplying the power from a battery.02-12-2009
20120200162Bi-Directional Grid-Tied Inverter with Series Capacitor for Regulating Voltage of DC Bus - A series-connected capacitor and battery circuit is constructed to form the dc-bus of a bi-directional, grid-tied inverter. The batteries are the main energy storage components that accept and storage the energy flow from the grid through the inverter. The batteries can also be independently charged from her power generation sources, such as a generator, a photovoltaic system, or a wind-turbine system. The batteries can be discharged and provide power flow back to the grid through the inverter. The series connected capacitors in the dc-bus circuit serves as a controlled voltage source of the dc-bus. The controlled capacitor voltage serves to regulate the dc-bus voltage at a pre-determined level in response to the changing battery voltage. An energy transfer circuit which uses inductor as energy storage media serves to transfer energy from the capacitors to the batteries or vice-versa and provides the mean to control the capacitor voltage.08-09-2012
20080290733DC BACKUP POWER SUPPLY SYSTEM AND DISK ARRAY USING SAME - A DC backup power supply system having a plurality of loads to which AC from a commercial power source is supplied, and DC power storage means for supplying DC power to the plurality of the loads at the time of a power outage of the commercial power source, said DC backup power supply system including: a control circuit having a first DC backup output for supplying a power from the DC power storage means to the plurality of the loads, including a specific load, only during the power outage of the commercial power source, and a second DC backup output for continuously supplying a power from the DC power storage means to the specific load regardless of the power outage of the commercial power source or sound operation thereof, the control circuit supplying the respective powers from the same DC power storage means to the first and second DC backup outputs.11-27-2008
20120032516UNINTERRUPTIBLE POWER SUPPLY SYSTEM AND POWER MANAGEMENT METHOD THEREOF SUITABLE FOR AUDIO VISUAL APPARATUS - An uninterruptible power supply system (UPS) and a power management method thereof suitable for an audio visual apparatus are provided. The uninterruptible power supply system includes a power management unit, a wireless transceiver module and a current detecting unit, wherein the current detecting unit is coupled to an output of the power management unit to detect a load current output from the UPS system. The UPS is capable of receiving and learning a wireless command code in an infrared ray (IR) remote control signal. When the UPS system detects a multimedia system connected thereto is turned on and the UPS system is in a lower power state, the UPS system sends command code to turn off the multimedia system to avoid the damage of the multimedia system during power failure.02-09-2012
20110163602METHOD AND APPARATUS FOR PROVIDING STANDBY POWER FOR VISUAL DISPLAY DEVICE - Provided are an apparatus and method thereof for providing standby power to a visual display, the apparatus including: a light collection unit which is operable to receive light and output a charging current; a battery which is operable to receive the charging current and providing the standby power to the visual display; and a controller which determines whether the battery has a voltage below a predetermined value, wherein if the voltage is below the predetermined value, the controller controls the battery to receive the charging current from the light collection unit, and wherein if the voltage is not below the predetermined value, the controller controls the battery to provide the standby power to the visual display.07-07-2011
20110163603SMART-GRID COMBINATION POWER SYSTEM - The embodiments shown and described herein relate to a portable clean power generation and aggregation system. The system comprises a plurality of power generation units operable to generate DC electrical power, a power storage device, an inverter unit, and a main controller. The plurality of power generation units may include a solar power generation unit, a wind power generation unit, a hydro power generation unit, and a fuel-based power generation unit. The main controller is electrically coupled to the plurality of power generation units, the inverter controller, and the power storage device, and monitors DC electrical power generation by the plurality of power generation units, monitors DC electrical power received by the inverter, measures charge of the power storage device, and directs DC electrical power from the power storage device to the inverter. The nature of the system and its applications allows the effective use of wireless communications systems and the like where they would otherwise not be possible.07-07-2011
20100013312DC UPS WITH AUTO-RANGING BACKUP VOLTAGE CAPABILITY - A direct current (DC) uninterruptible power supply (UPS) having auto-ranging battery backup voltage capability is provided. At least one input is configured. A rectifier is connected to the at least one input. A common node is connected to the rectifier. At least one output is connected to the common node. A battery backup circuit is connected to the common node. The battery backup circuit includes first and second strings of batteries, a switch connected between a positive terminal of the first string of batteries and a negative terminal of the second string of batteries, and a plurality of steering diodes connected to the first and second strings of batteries and the switch to maintain current flow in a first direction. The switch is operable to place the first and second strings of batteries in series when closed, and operable to place the first and second strings of batteries in parallel when open.01-21-2010
20080252144UNINTERRUPTIBLE POWER SUPPLY AND METHOD FOR CONTROLLING SAME - An uninterruptible power supply and method for controlling same are disclosed. The controlling method includes the steps of bypassing the first AC power to the output terminal via the bypass loop and the switch and converting a second AC power having a voltage, phase and frequency substantially equal to that of the first AC power by an inverter when the first AC power is normal; and switching the second AC power to the output terminal via the switch when the phase or frequency of the first AC power is changed so as to generate a difference value between the first AC power and the second AC power and the difference value is larger than a predetermined difference value.10-16-2008
20100320841REAL TIME CLOCK DRIVING CIRCUIT - A real time clock driving circuit for driving a real time clock includes a power source, a flash driving circuit, a switch circuit, and an electronic source. The flash driving circuit includes a booster, a charging capacitor, and a number of first resistor dividers. The anode of the charging capacitor and the first resistor dividers are coupled to an output of the booster. A node is defined between the at least one resistor divider defined. The switch circuit includes a MOS transistor and a second resistor divider. The source of the MOS transistor is coupled to the node. The gate is coupled to the node via the second resistor divider. The drain is coupled to the power input of the real time clock. The power source is coupled to the input of the booster, the gate, and the power input of the real time clock.12-23-2010
20110260542POWER CONTROL CIRCUIT - A power control circuit includes a switch circuit, a current sampling circuit, a controller, and a standby power circuit. The switch circuit is connected to an alternating current (AC) power source and an electronic device. The sampling circuit is used to sample a current of a line of the AC power source. The controller is used to determine whether the sampled current is within a predetermined range, and turn off the switch circuit if the sampled current is within a predetermined range to disconnect the electronic device from the AC power source.10-27-2011
20110109164Intuitive Electronic Circuit - An apparatus according to various embodiments may detect the state of an external switch (05-12-2011
20110133560SERVER AND UNINTERRUPTABLE POWER SUPPLY HOUSED IN THAT SERVER - The main server block 06-09-2011
20110133558GRID-CONNECTED POWER STORAGE SYSTEM AND METHOD FOR CONTROLLING GRID-CONNECTED POWER STORAGE SYSTEM - A grid-connected power storage system for coupling a power generation system to a grid, including: a main battery for discharging stored power to the load system; at least one additional battery coupled to the main battery for discharging stored power to the load system; a bidirectional converter coupled to the main and additional batteries, and including a plurality of switches for performing a conversion between a DC link voltage, between the power generation system and the grid, and a battery voltage, a first switch of the plurality of switches corresponding to the main battery and a second switch of the plurality of switches corresponding to the additional battery, wherein the first and second switches are connected to each other in parallel; and an integrated controller for selectively controlling operations of the first switch and the second switch based on an amount of power used by the load system.06-09-2011
20110133557VOLTAGE CONVERTER - Systems and methods of operating a voltage converter are provided. The converter includes an output inductor and an output capacitor coupled to a rectifier circuit. The converter also includes a clamp circuit having a clamping diode and a clamping capacitor coupled in series, with the serial combination in parallel with the output inductor. The clamp circuit can also include a recovery inductor coupled to the output capacitor, and a switch configured to selectively couple and decouple the recovery inductor in parallel with the clamping capacitor.06-09-2011
20110074217Device for supplying uninterruptible power - The invention relates to uninterruptible power supply devices which make it possible to supply emergency power to a load, which is to be supplied, in the event of mains failure. The invention is based on the object of providing a device for supplying uninterruptible power, which device can be operated in a more energy-saving manner and in which the emergency power can be controlled in a rapid and safe manner. To this end, the uninterruptible power supply device has a power transistor which can be rapidly switched and can be used to connect a standby power source to the output connections during emergency power operation. The output current can also be dynamically limited by driving the power transistor, which can be rapidly switched, in a corresponding manner. In addition, the input and output of the UPS device are decoupled using a field effect transistor that acts as a power transistor.03-31-2011
20110254372Alternative-Source Energy Management - A power converter system includes a power converter system including: a DC-to-AC power converter; a first output configured to be coupled to a power grid; a first input configured to be coupled to the power grid; second outputs each configured to be coupled to a corresponding AC load; a power-grid switch coupled to the converter and to the first output; load switches coupled to the converter, the second outputs, and the first input; and a controller coupled to the load switches and to the first output and configured to determine whether energy from the power grid satisfies at least one criterion, the controller being further configured to control the power-grid switch and the load switches to couple the converter to the first output and to couple the first input to the second outputs if the at least one criterion is satisfied and otherwise to control the power-grid switch and the load switches to isolate the converter from the first output and to couple the converter to at least one of the second outputs.10-20-2011
20110260543Converter device and uninterruptible power supply equipped with one such device - A three-level reversible converter comprising two main switching units respectively equipped with a first and second main switch, a main switching point, and a third main switch common to the two main switching units, comprising: 10-27-2011
20110260541UNINTERRUPTED POWER SUPPLY APPARATUS - Disclosed is an uninterrupted power supply apparatus, comprising a rectifying unit outputs a positive half-cycle of voltage potential and a negative half-cycle of voltage potential; a backup battery outputs a backup voltage; a first boost unit receives the positive half-cycle of voltage potential or the backup voltage and outputs a first voltage; a second boost unit receives the negative half-cycle of voltage potential or the backup voltage and outputs a second voltage; a current shunt unit receives the first voltage and the second voltage and outputs an AC output voltage; a charge circuit, coupled to the rectifying unit, the backup battery, and the first and/or the second boost unit, for being capable of controlling the first and/or the second boost unit to either store a charging power or charge the backup battery by applying the stored charging power alternatively and successively.10-27-2011
20110260539High Efficiency Backup-Power Circuits for Switch-Mode Power Supplies - Disclosed are novel interconnections of a coupling circuit and an energy storage device which enables the storage device to provide back-up power for a switching power supply without requiring the device to store or output high voltage, and which enables full utilization of the energy stored in the device. In exemplary embodiments, the combination of the coupling circuit and the energy storage device may be coupled between the input and output of the switching power supply (e.g., between the non-ground terminals of the input and output ports of the switching power supply). The coupling circuit is configured to couple power from the energy storage device to the input of the switching power supply when the input power source is not provided to the switching power supply, and optionally to couple power from the input power source to the energy storage device when the input power source is provided.10-27-2011
20110095611Uninterruptible power supply supporting active loads - An uninterruptible power supply supporting active loads includes a charge and discharge module having a battery set and a charger charging the battery set with an input power, a switch circuit having at least two active switches connected to the battery set, a dynamic PWM control module connected with each of the active switches of the switch circuit, alternately outputting duty cycles composed of low-frequency square wave and high-frequency square wave and alternately controlling each of the active switches to turn on or off, and a transformer having a primary side connected with the switch circuit and a secondary side whose two terminals are connected with an output capacitor generating a filtering function in collaboration with an leakage inductor in the secondary side of the transformer. The uninterruptible power supply generates a quasi-continuous output satisfying the hold-up time demanded by an active load.04-28-2011
20100060081System and Method for Providing Power to Portable Electronic Devices - A power supply for an electronic device comprises a power module, an AC module, and a DC module. The power supply operates in first and second configurations. In the first configuration, the power module generates a DC output signal based on an AC power signal transmitted from the AC module. In the second configuration, the power module generates the DC output signal based on a DC power signal from the DC module.03-11-2010
20110148207HYBRID ARCHITECTURE FOR DC POWER PLANTS AND A METHOD OF MINIMIZING BATTERY CONDUCTOR CURRENT - Included herein is a DC power plant, a DC power system and a method of reducing battery current. In one embodiment, the DC power plant includes: (1) a rectifier system including an AC power input and a DC power output, the rectifier system configured to receive an AC input voltage at the AC power input and produce a DC output voltage at the DC power output and (2) a controller configured to monitor a battery current associated with a battery distribution conductor coupled to the rectifier system for a remote battery system and dynamically adjust the DC output voltage to maintain the battery current at substantially zero amperes.06-23-2011
20110187197EMERGENCY POWER SUPPLY APPARATUS - A modular emergency power system architecture (08-04-2011
20110187195Intelligent Low-Consumption Adaptor - An intelligent low-consumption adaptor includes a switch circuit, a control circuit and a standby circuit. The switch circuit can be connected to an AC power source. The control circuit includes a recharge switch connected to the switch circuit, an output unit connected to the recharge switch, and a MCU circuit connected to the recharge switch and the output unit. The standby circuit includes a standby turn-off circuit connected to the MCU circuit and an auxiliary power supply connected to the MCU circuit.08-04-2011
20110163604POWER SUPPLY CIRCUIT OF TERMINAL AND METHOD FOR SUPPLYING POWER USING THE SAME - A power supply circuit and a power supply method using the same are provided. The power supply circuit includes a power interface to which power is supplied, a converter and a charging circuit connected to the power interface, a battery for receiving power from the charging circuit and for providing stored power to a system, the system for selectively receiving power from the battery or the system, a main switch disposed between the battery and the system for selectively interrupting the power of the battery to the system, and a control logic unit for switching the main switch according to presence of power supplied from the power interface.07-07-2011
20110215648UNINTERRUPTED POWER SUPPLY UNIT - An uninterrupted power supply unit is provided with a straightforward switch connected between a power source and a load to supply or interrupt a power to a system. The combination of the outputs from two kinds of single phase inverters enables compensating for a variation in the system voltage in the normal condition and to supply a predetermined voltage to the load after decreasing in the system voltage and opening of a straight forward switch.09-08-2011
20110215647ELECTRICAL ASSEMBLY AND METHOD FOR SUPPLYING WITHOUT INTERRUPTION AN INSTALLATION WITH ALTERNATING CURRENT - An electrical assembly including an installation having an alternating current power supply port and at least one electrical system, and a device for supplying without interruption with alternating current the power supply port. The uninterruptible power supply device includes a first circuit for electrically connecting the power supply port to an alternating current power supply network, and a back up device including a rectifier, means for charging, storing and discharging electrical energy, and an inverter, connectable to the power supply port. The back up device is arranged in a second alternating current power supply circuit connectable to the power supply port in a by-pass of the first circuit. The uninterruptible power supply device includes a switch to connect selectively the first or the second circuit to the power supply port as a function of a state of the power supply of the electrical system in the installation.09-08-2011
20110215646UPS AT THE RECOVERY MODE FROM THE POWER FAILURE - An uninterruptable power supply (UPS) designed to switch power inputs between an alternating current mode and a battery mode having a sensor to monitor a load current, and a control processing unit (CPU) to boost a bus voltage of the uninterruptable power supply by increasing a calculated reference voltage to a target reference voltage by a slope. The calculated reference voltage is calculated by the CPU based on a voltage drop value in main capacitors that occurs during a transfer time between the battery mode and the AC mode. The target reference voltage is the voltage across an equivalent circuit of the main capacitors before the voltage drop. The slope is based on a ratio of a voltage drop value across an equivalent circuit of main capacitors and a charging up time to reach the target reference voltage.09-08-2011
20100244567SYSTEM AND METHOD FOR REPLACING A BATTERY IN AN UNINTERRUPTIBLE POWER SUPPLY - A system for guiding a user through a procedure corresponding to installing a battery in a UPS that is associated with the system. The system includes at least one programmed processor embedded within the UPS. The programmed processor is configured to retrieve at least one stored procedure corresponding to installing the battery in the UPS including at least one step to be performed by the user. The system further includes at least one device embedded within the UPS to provide information regarding a status indicator of the battery of the UPS. The programmed processor and the device are operatively coupled such that the programmed processor receives at least a portion of the information of the battery from the device. The system further includes a user interface forming part of the UPS. The user interface is coupled to the programmed processor for displaying the step of the stored procedure. The programmed processor is configured to prompt the user via the user interface to install a battery and reset at least one battery performance indicator. Other systems, devices and methods for replacing a battery within a device are further disclosed.09-30-2010
20100244566SYSTEM AND METHOD FOR CONFIGURING A POWER DEVICE - A system and method for directing a user to configure a power device via an alphanumeric user interface is provided. The power device may include data storage storing a plurality of operational parameters. The method includes acts of prompting, during an initial power-up of the power device, a user to enter an indication of quality of power supplied to the power device, receiving the indication via the user interface, determining a first value for each of the plurality of operational parameters of the power device based at least in part on the indication and applying each first value of the plurality of operational parameters to the power device.09-30-2010
20100019577UNINTERRUPTIBLE POWER SUPPLIES, SOLAR POWER KITS FOR UNINTERRUPTIBLE POWER SUPPLIES AND RELATED METHODS - Uninterruptible power supplies, solar power kits for uninterruptible power supplies and related methods are described. According to one aspect, an uninterruptible power supply includes a power bus, mains circuitry configured to rectify electrical energy received from a mains supply system into rectified electrical energy and to provide the rectified electrical energy to a power bus of the uninterruptible power supply, photovoltaic circuitry configured to convert solar energy into converted electrical energy and to provide the converted electrical energy to the power bus, a battery system configured to receive electrical energy from the power bus to charge a battery of the battery system and to discharge electrical energy to the power bus, an inverter configured to provide electrical energy from the power bus to the load, and a controller configured to monitor the photovoltaic circuitry and to implement at least one operation of the uninterruptible power supply using the monitoring.01-28-2010
20080265682LEAKAGE CURRENT PROTECTION CIRCUIT - Systems and methods are provided for substantially mitigating leakage current. One embodiment includes an integrated circuit (IC). The IC comprises a monitoring circuit configured to control switching of one of a first voltage source and a second voltage source to an output. The IC also comprises a leakage current protection circuit configured to substantially mitigate leakage current flow between the first voltage source and the second voltage source due to an undershoot condition caused by the switching between the first and second voltage sources to the output.10-30-2008
20110133559SERVER UNINTERRUPTABLE POWER SUPPLY - The server uninterruptible power supply is housed inside the server case 06-09-2011
20120169127POWER SUPPLY SYSTEM AND FUEL CELL BACKUP POWER SYSTEM THEREOF - A power supply system and a fuel cell backup power system thereof are provided. The power supply system includes: a mains power supply module for providing mains electricity to a load, and a fuel cell backup power system for providing electricity to the load while the mains electricity provided by the mains power supply module is insufficient. The fuel cell backup power system includes a fuel cell system, a power conditioning module, a battery, and a controller. The fuel cell system and the battery output first and second electrical energy, respectively. The controller defines a plurality of output power requirement levels for the fuel cell system, reads the power required by the load, and adjusts the output ratio between the first and the second electrical energy in a stepwise manner according to the output power requirement levels so as to meet the power required by the load.07-05-2012
20110304212RENEWABLE ENERGY STORAGE SYSTEM - A bidirectional inverter of a renewable energy storage system is disclosed. In one embodiment, the bidirectional inverter includes a switching unit including a first switch connected to the DC link in series and a second switch connected to the DC link in parallel, an inductor electrically connected to the switching unit, a full-bridge switching unit electrically connected to the inductor, and a controller electrically connected to the switching unit, and the full-bridge switching unit.12-15-2011
20100148583METHOD AND DEVICE FOR PROVIDING BATTERY POLARITY PROTECTION FOR UNINTERRUPTIBLE POWER SUPPLY - An apparatus for determining a correct connection of a three-wire battery bank to a UPS is disclosed. The apparatus comprises a sensing printed circuit board receiving a voltage from the battery bank and providing an output of a known value when a correct connection between the battery bank and the UPS is determined, a coil receiving the output from the sensing board and a contactor comprising a plurality of switches, at least one switch for each of the wires, which are closed when the voltage applied to the coil is of a known value.06-17-2010
20120068541POWER SUPPLY SYSTEMS AND METHODS EMPLOYING A UPS INTERFACED GENERATOR - An uninterruptible power supply (UPS) system includes a power transfer circuit having a power output configured to be coupled to a load, a UPS circuit having first power input configured to be coupled to a generator, such as a diesel- or gas-powered engine-generator set. The UPS circuit also has a second power input configured to be coupled to a backup power source, such as a battery or other energy storage device. The UPS circuit further has a power output configured to be coupled in common to the load with the power output of the power transfer circuit. The UPS system further includes a control circuit operatively associated with the UPS circuit and configured to control provision of power to the load from the generator and the backup power source via the UPS circuit responsive to a status of the power transfer circuit. The power transfer circuit may include, for example, another UPS circuit or other power transfer device, such as a static switch.03-22-2012
200801977063-Phase High Power UPS - A 3-phase uninterruptible power supply (UPS) including first, second, and third AC/DC converters, a DC/DC converter, and at least one DC/AC converter coupled to multiple electrical buses. The first, second, and third AC/DC converters each being configured to receive AC power and to provide multiple DC signals to the multiple electrical buses. The DC/DC converter being configured to convert DC voltages present on the multiple electrical buses to a DC voltage that can be used to charge a batter. The DC/AC converter being configured to receive DC power from the multiple electrical buses and to provide an AC output. The 3-phase UPS being configured such that when suitable AC power is provided to the AC/DC converters, the DC/DC converter is configured to charge a battery, and when suitable AC power is not provided to the AC/DC converters, the DC/DC converter is configured to provide DC power to the multiple electrical buses using power provided by the battery.08-21-2008
20120001489AC ADAPTOR MINIMIZATION THROUGH ACTIVE PLATFORM POWER CONSUMPTION MANAGEMENT - Systems and methods of managing platform power consumption may involve determining a power consumption level of a platform based on at least in part a current supplied by an AC adaptor. A power limit of an integrated circuit in the platform can be determined based on at least in part the power consumption level of the platform, wherein the power level may be applied to the integrated circuit.01-05-2012
20110156482UNINTERRUPTIBLE POWER SUPPLY HAVING INTEGRATED CHARGE/DISCHARGE CIRCUIT - An uninterruptible power supply includes an AC-to-DC converting circuit, an energy storage unit, a first path-switching circuit, a second path-switching circuit, an integrated charge/discharge circuit and an operating control unit. If the input voltage is abnormal, the input terminal and the output terminal of the integrated charge/discharge circuit are respectively connected to the energy storage unit and the power supply output terminal, so that electric energy stored in the energy storage unit is transmitted to the power supply output terminal through the integrated charge/discharge circuit. Whereas, if the input voltage is normal, the input terminal and the output terminal of the integrated charge/discharge circuit are respectively connected to the power supply output terminal and the energy storage unit, so that the energy storage unit is charged by the integrated charge/discharge circuit.06-30-2011
20110156483POWER MANAGEMENT SYSTEMS - A power management system includes a first switch, a second switch, and a controller coupled to the first and second switches. The first switch has a first transfer terminal. The second switch has a second transfer terminal. The controller controls power conversion by turning on a third switch periodically. The first and second transfer terminals and a third transfer terminal of the third switch are coupled to a common node. The resistance between the first transfer terminal and the common node, the resistance between the second transfer terminal and the common node, and the resistance between the third transfer terminal and the common node are substantially equal to zero.06-30-2011
20110049993REVERSE POLARITY SERIES TYPE LED AND DRIVE CIRCUIT - The present invention of a reverse polarity series type LED is formed by two sets of LED and diode assemblies in reverse polarity series connection wherein the first set is consisted of at least one or multiple homopolar series or parallel connected or series and parallel connected LEDs, and the second set consisting of at least one or more homopolar parallel or series connected or series and parallel connected LEDs for further connection to the drive circuit formed by current-limiting impedance and/or power storage and discharging devices and/or voltage-limit circuit devices in order to produce the required operational characteristics.03-03-2011
20120007428Electric Power Generating System with Boost Converter/Synchronous Active Filter - A method of startup of an electric start electrical power generating system (EPGS) is provided. The EPGS includes a generator configured to power a direct current (DC) load via a DC bus. The method includes: disconnecting the DC load from the DC bus; connecting a battery to a boost converter, the boost converter being connected to the generator; powering the generator using the battery via the boost converter; when the generator reaches a minimum speed: disconnecting the battery from the boost converter; deactivating the boost converter; and activating a synchronous active filter, the synchronous active filter being connected to the DC bus; bringing up a voltage on the DC bus by the generator; and when the voltage on the DC bus reaches a predetermined level, connecting the DC load to the DC bus.01-12-2012
20120056481DIRECT-COUPLED IT LOAD - Apparatus and associated method and computer program products involve a highly efficient uninterruptible power distribution architecture to support modular processing units. As an illustrative example, a modular processing unit includes an integrated uninterruptible power system in which a PFC-boost AC-to-DC conversion occurs between the utility AC grid and the processing circuit (e.g., microprocessor) loads. In an illustrative data center facility, a power distribution architecture includes a modular array of rack-mountable processing units, each of which has processing circuitry to handle network-related processing tasks. Associated with each modular processing unit is an integrated uninterruptible power supply (UPS) to supply operating power to the network processing circuitry. Each UPS includes a battery selectively connectable across a DC bus, and a AC-to-DC rectifier that converts an AC input voltage to a single output voltage on the DC bus. The regulated DC bus voltage may be close to the battery's fully charged voltage.03-08-2012
20120025615POWER SUPPLY APPARATUS - A power supply apparatus is disclosed. The power supply apparatus includes a rechargeable battery and a battery management system (BMS) for managing charging and discharging of the battery. The power supply apparatus is configured to supply an operating power to the BMS from an external power of an external power source when the external power source is in a normal state and is capable of supplying the external power to a load through the power supply apparatus. The power supply apparatus is further configured to supply the operating power to the BMS from electric energy stored in the battery when the external power source is in a state different from the normal state and not capable of supplying the external power to the load through the power supply apparatus.02-02-2012
20090134704ELECTRIC POWER-SUPPLY APPARATUS AND OVER-DISCHARGE CONTROL METHOD FOR USE THEREWITH - A method for controlling over-discharge of a secondary battery that is charged with electric power from a main power supply and that supplies electric power to a load when the supply of electric power to the load by the main power supply is stopped is provided. When a battery voltage detection unit detects that the voltage output by the secondary battery has decreased to less than an auxiliary voltage threshold value, a switching unit sets the second electric power-supply unit, the load, and the auxiliary voltage detection unit to a disconnected state in which electric power is not supplied from the second electric power-supply unit to the load and the auxiliary voltage detection unit, and otherwise sets them to a connected state in which electric power is supplied from the secondary battery to the load and the battery voltage detection unit.05-28-2009
20120119581STATIC BYPASS SWITCH WITH BUILT IN TRANSFER SWITCH CAPABILITIES - According to one aspect, embodiments of the invention provide a UPS system comprising a first input, a second input, an output, a power module coupled to the first input, wherein the power module is configured to condition power provided to the input of the power module and provide conditioned power to an output of the power module, and a static bypass switch module selectively coupled to the first input and the second input, wherein, in a first mode of operation, the static bypass switch module is configured to couple the second input to the input of the power module, and provide a second input power to the input of the power module, and wherein, in a second mode of operation, the static bypass switch module is configured to provide a first input power to the output of the UPS system, through the bypass switch module, bypassing the power module.05-17-2012
20120161523PHOTOVOLTAIC POWER GENERATION SYSTEM - A photovoltaic power generation system is disclosed, which can allow a user to easily acquire information on a photovoltaic inverter, easily control the photovoltaic inverter, and save electric charges.06-28-2012
20100289336POWER SUPPLY SYSTEM - A power supply system is provided with devices of generating an electric power, controlling an amount of power generation, charging an electric power having been generated, converting an electric power having been generated, charging an electric power having been converted, operating an electric load by an electric power having been converted, and detecting a short-circuit fault of input/output of a DC converter. In the case of detecting an input/output short-circuit fault of the DC converter, from the input/output short-circuit detector to the generator controller, an instruction is given such that the generator is switched to make a power generation at a predetermined constant voltage determined based on a voltage of the circuit arrangement.11-18-2010
20120248876POWER SUPPLY APPARATUS - A power supply apparatus includes a secondary battery and a timer unit for measuring a time required to charge the secondary battery from a first State Of Charge (SOC) to a second SOC, or a time required to discharge the second battery from the second SOC to the first SOC. The power supply apparatus further includes a determination unit for determining a degraded state of the secondary battery based on results of the measurement by the timer unit.10-04-2012
20120248875SYSTEM AND METHOD FOR OFF-LINE UPS - A method of operating an uninterruptible power supply (UPS) includes generating, during a portion of an output cycle, a substantially sinusoidal output voltage responsive to a plurality of pulse width modulation (PWM) control signals provided to a power conversion circuit of the UPS, comparing the output voltage to a reference root mean square (RMS) voltage at each of a plurality of time intervals during the portion of the output cycle, calculating a PWM control signal scaling factor based on each of the comparisons to the reference RMS voltage, and maintaining the output voltage at substantially the reference RMS voltage by applying the calculated PWM control signal scaling factor to at least one of the plurality of PWM control signals. The method may include detecting that the output voltage has reached a maximum output voltage level and clamping the output voltage to a steady state output voltage reference level.10-04-2012
20090058187Power supply having redundant power - The present invention includes at least one power transformation device, a redundant power module to output a redundant power and an electric power distribution unit. The redundant power module includes at least an energy storage module. The power transformation device receives an input power and generates a transformed power. The power transformation device and the redundant power module are connected to the electric power distribution unit. The electric power distribution unit has a first end connecting to a power output end and a second end to receive output of the power transformation device and the redundant power module. Thereby outputs of the power transformation device and the redundant power module can be distributed to generate an output power to ensure that redundant power is provided to maintain a buffer time period in the event of power interruption or malfunction occurred to power transformation device.03-05-2009
20120169126BIDIRECTIONAL BUCK-BOOST CONVERTER - A bidirectional buck-boost DC-DC converter is particularly well suited for applications where multiple bidirectional buck-boost DC-DC converters are connected in parallel to a common battery. Multiple bidirectional DC-DC converters, as disclosed, may be connected in parallel to a common battery and, at least in boost mode, substantially no current circulates between the parallel connected bidirectional DC-DC converters.07-05-2012
20080296975BACK-UP POWER SYSTEM - A substantially uninterruptible backup power system to provide power to common household appliances comprises a rechargeable battery, a trickle-charging circuit to keep the battery fully charged at all times from the receptacle power, a DC to AC inverter to supply standard AC line voltage from the battery to the lamp, a relay switch, controlled by main power voltage, to switch to the backup system when main power fails, and a timing circuit to optimize a voltage output of the system based on current battery voltage and a desired time period for the voltage output. The system can be set to operate only when the appliance is turned on, which optimizes the current and power required to provide backup power to the appliance for a maximum period of time.12-04-2008
20120175958METHOD AND APPARATUS FOR PROVIDING UNINTERRUPTIBLE POWER - At least one aspect of the invention is directed to an uninterruptible power supply. The uninterruptible power supply includes a first input having an input line connection and an input neutral connection to receive a first input voltage from a first voltage source, a second input having a positive input connection and a negative input connection to receive a second input voltage from a second voltage source, a boost circuit configured to provide a positive output DC voltage with respect to the input neutral connection and a negative output DC voltage with respect to the input neutral connection in both a line mode of operation and a backup mode of operation, a first connection circuit configured to couple the first input to the boost circuit in the line mode of operation, and configured to couple the second input to the boost circuit in the backup mode of operation, and a second connection circuit configured to couple a midpoint of the boost circuit to the input neutral connection in the line mode of operation and to couple the midpoint of the boost circuit to the positive input connection in battery mode of operation.07-12-2012
20100270862POWER MANAGEMENT CIRCUIT - An external power source is connected to an adapter input terminal (first terminal). A battery is connected to a path input terminal (second terminal). A selection circuit (a first switch, a second switch, a logic circuit compares the input voltage input from the external power supply with the battery voltage, and selects one of the two. The voltage thus selected by the selection circuit is output to an external load circuit via a system power supply terminal. A charging circuit charges the battery using the input voltage supplied from the external power supply.10-28-2010
20100270861Illumination device of gradual dimming type after power interruption - This invention relates to an illumination device of gradual dimming after power interruption in which a built-in power storage unit and a gradual-dimming light intensity drive control unit are provided within the lamp body, the light emitting source of the illumination device being normally lightened by city power, the built-in power storage unit being charged by the city power simultaneously. When city power is interrupted, the power is switched to be supplied with the power coming from the built-in power storage unit and the gradual-dimming light intensity drive control unit is activated to control the gradual dimming of light intensity of the light emitting source. In this manner, the effect of energy saving and extension of illumination time can be obtained such that eyes of people can adapt to the light intensity change. In addition, the illumination device is safe and is convenient in use without any indoor wiring change or additional member added.10-28-2010
20120074786UNINTERRUPTIBLE POWER SUPPLY SYSTEMS AND METHODS USING ISOLATED INTERFACE FOR VARIABLY AVAILABLE POWER SOURCE - An uninterruptible power supply (UPS) system includes a first port configured to be coupled to an AC power source and a second port configured to be coupled to a load. The system also includes a UPS circuit including a first converter circuit coupled to the first port, a second converter circuit coupled to the second port and a DC bus coupling the first converter circuit to the second converter circuit and configured to be coupled to an auxiliary power source and a third converter circuit coupled to the second port and configured to receive power from a variably available power source. A control circuit is configured to cooperatively control the UPS circuit and the third converter circuit.03-29-2012
20120313438UNINTERRUPTIBLE POWER SUPPLY - An uninterruptible power supply (UPS) system includes an AC power input configured to receive AC power from a single-phase AC power source or a multi-phase AC power source, a DC power source, an output circuit including a power output, a controllable switch configured to selectively couple at least one of the AC power input and the DC power source to the output circuit, and a processor coupled and configured to affect operation of the output circuit depending upon which of single-phase and multi-phase operation of the UPS is indicated.12-13-2012
20120256492Passive RF Energy Harvesting Scheme For Wireless Sensor - A radio frequency energy harvester harvests RF energy from the environment. The energy harvester may include a local power source. The energy harvester may have an associated crystal radio antenna that harvests AM radio waves ubiquitously. The radio frequency energy harvested may be stored via a super capacitor. The stored energy may power a self-contained processing unit directly when the level of the energy harvested remains above a threshold level. However, if the energy harvested drops below the threshold level, the processing unit, which may include a radio, may switch to the local power source and/or a low power mode of operation. The low power mode of operation may reduce the amount of processing and/or transmitting by the radio. The processing unit may be part of a network of radios. The energy harvester may supply energy for a variety of applications, including building automation, industrial automation, power generation, and healthcare.10-11-2012
20120187764ENCLOSURE HOUSING ELECTRONIC COMPONENTS HAVING HYBRID HVAC/R SYSTEM WITH POWER BACK-UP - An enclosure or shelter having an interior chamber for housing electronic components and equipment is provided with an HVAC/R system configured with a rechargeable DC power source for power back-up to maintain substantially uninterrupted power in the case of a main power failure. The system includes one or more variable frequency drives (VFD) controlled by a VFD controller and configured to provide three-phase power to one or more three-phase AC motors and single-phase power to one or more single-phase AC motors. The system also includes a power source controller configured to select and power sources based on availability of one or more power sources and other logic.07-26-2012
20120228944DC POWER DISTRIBUTION SYSTEM - A DC power distribution system is equipped with a storage device having a first storage battery, which discharges to electrical apparatuses only during power failure, and a second storage battery, which discharges to electrical apparatuses when service is not interrupted. The electricity storage device and electrical apparatuses are supplied with DC power from a power generation device which generates electricity using natural energy, and DC power which has been converted from AC power supplied from a commercial power source. When the power supply from the electricity generation device and the commercial power source is interrupted, the first storage battery discharges power to the electrical apparatuses.09-13-2012
20120228943ELECTRIC POWER SUPPLY SYSTEM - There is provided an electric power supply system comprising a secondary battery unit which stores electric power generated by a solar cell module, a charge switch circuit which disconnects and connects a charge path between the solar cell module and the secondary battery unit, and a charge and discharge control unit which controls the disconnection and the connection of the charge path by the charge switch circuit, wherein, in the charge switch circuit, the disconnection and the connection of the charge path is controlled by an output voltage of the solar cell module when the charge switch circuit cannot be controlled by the charge and discharge control unit.09-13-2012
20120228942ELECTRIC POWER GENERATION SYSTEM, METHOD OF CONTROLLING A BATTERY, COMPUTER-READABLE RECORDING MEDIUM WHICH RECORDS A CONTROL PROGRAMS AND DEVICE CONTROLLING A BATTERY - This electric power generation system comprises a power generator, a battery configured to store electric power generated by the power generator, a detector configured to acquire a first power amount data for every first time interval and a second power amount data for every second time interval which is shorter than the first time interval, a controller configured to compute a target output value for the electric power to be supplied to the electric power transmission system based on the first power amount data, to compute a charge or discharge value that is an amount of electric power for charging or discharging the battery based on the target output value, to correct the charge or discharge value based on the second power amount data, and to charge or discharge the line with electric power corresponding to the charge or discharge value from the battery.09-13-2012
20120228941ELECTRIC POWER SUPPLY SYSTEM, MASTER CONTROL DEVICE, SYSTEM STABILIZATION SYSTEM, CONTROL METHOD FOR THE MASTER CONTROL DEVICE AND CONTROL PROGRAM FOR THE MASTER CONTROL DEVICE - An electrical power supply system is managed by a master management system external to the supply system. The system includes a power generator generating electric power using renewable energy, a battery storing electric power generated by the power generator, and a power output device outputting power from the power generator or the battery. The system also includes a charge and discharge controller acquiring generated power data from the power generator, transmitting the generated power data to the master management system, computing a target output value for output from the power output device, and controlling charge and discharge of the battery such that the target output value is outputted from the power output device. The charge and discharge controller receives charge and discharge instruction signals from the master management device, and initiates or terminates the charge and discharge of the battery based on the charge and discharge instruction signals.09-13-2012
20110121654REMOTE SWITCH SENSING IN LIGHTING DEVICES - In embodiments of the present invention improved capabilities are described for providing intelligent power control in response to an external power interruption, causing a processor is in an electrical fixture to interrogate an external power control switch to gain an understanding of the switch's state, where prior to the external power interruption the electrical fixture may be powered by external power and where external power may be connected and disconnected by a user of the switch. In the event that the switch's state is determined to be such that it would normally pass power to the electrical fixture, the processor causes the electrical fixture to operate using a backup power supply. In the event that the switch's state is determined to be such that it would normally not pass power to the electrical fixture, the processor causes the electrical fixture to act as if the user of the switch has intentionally removed power. In response to a return of external power, powering the electrical fixture is then through external power where the user of the switch switches external power.05-26-2011
20110121653PARALLEL POWERING OF PORTABLE ELECTRICAL DEVICES - A system may include an electronic device configured to consume a supply current; an AC to DC adapter configured to be coupled to the electronic device, wherein the AC to DC adapter has a maximum rated output current; a battery configured to be coupled to the electronic device; DC to DC converter configured to be coupled to the battery and the electronic device; and a controller configured to couple the AC to DC adapter to the electronic device, the controller further configured to couple the DC to DC converter to the battery and the electronic device when the supply current exceeds the maximum rated output current of the AC to DC adapter.05-26-2011
20080296974SNMP MANAGEMENT CARD CAPABLE OF SUPPLYING POWER TO NETWORK DEVICE ATTACHED THERETO - A simple network management protocol (SNMP) management card includes a processor, a network interface card (NIC) chip, a network port connected to the processor via the NIC chip, a power sourcing equipment (PSE) chip, and a power port connected to the network port via the PSE chip. The network port is configured to be connected to a network device. The PSE chip receives power from the power port and transmits the power to the network device via the network port.12-04-2008
20120299382CONTROL METHOD OF AN UNINTERRUPTIBLE POWER SUPPLY FOR EXTENDING A DISCHARGE TIME UNDER A NO-LOAD CONDITION - A control method of an uninterruptible power supply (UPS) for extending a discharge time under a no-load condition instructs a battery of the UPS to discharge by repeating an alternate on and off cycle when the UPS enters a battery mode and after a no-load condition continues over a period of time so that the UPS alternately and repeatedly discharges and stops discharging based on the alternate on and off cycle, and detects if the no-load condition is not present during the discharging period. If not present, the battery is restored to continuously discharge. Additionally, the discharge voltage can be reduced during the discharging period to alleviate the power discharged under the no-load condition. Accordingly, the control method can reduce to discharge under the no-load condition and further extend a discharge time under a no-load condition.11-29-2012
20120261994Dual input RTC supply generation with replica power path and autonomous mode of operation from the system supply - Circuits and methods providing a electronic power supply applicable to any dual supply rail systems, which require a smooth and uninterrupted output supply and a replica power path and autonomous mode of operation from the system power supply are disclosed. In a preferred embodiment of the invention the power supply is applied to a real time clock. An Innovative Replica Power Path concept and circuit implementation ensures the smooth and uninterrupted transfer of power from one input source to the other. The circuit features a Latched Supply Comparator that guarantees the commutation to the Replica Power Path only happens after the voltage is settled. Zero power consumption from the back-up energy source is achieved in the presence of an alternative higher voltage source. The generated RTC supply voltage does not suffer from abrupt changes when the voltage level of the main system power source (battery or charger) is connected or disconnected. The invention allows for maximum utilization of the energy left in the main battery, thus extending the life of the lower capacity backup battery/super-cap.10-18-2012
20120261995ELECTRONIC DEVICE - There is provided an electronic device including a power circuit and a system circuit. The system circuit includes a processing unit and a charge-discharge device. The processing unit controls the power circuit to stop providing power to the system circuit when identifying that the electronic device enters a standby state and that a discharge voltage of the charge-discharge device is higher than a predetermined voltage thereby decreasing a standby power consumption of the electronic device.10-18-2012
20120319488ELECTRICAL POWER SUPPLY APPARATUS AND CONTROLLING METHOD THEREOF - Disclosed is an electrical power supply apparatus, comprising a switch circuit, an output circuit, single-direction pass circuit and a control circuit. The output circuit is used for outputting a supply of main power source. The standby circuit is used for providing a supply of standby power source. The control circuit is for being capable of controlling the switch circuit according to a state of the external power source, wherein when the external power source is on, the switch circuit is in a cutoff state for allowing a first period or a second period of a power signal of the external power source transferred to the standby circuit through the single-direction pass circuit.12-20-2012
20120319487Integrated Battery Backup and Charging for Mobile Devices - A battery backup and charging device (BBCD) is described. The BBCD includes a battery, a charger coupled to the battery, AC prongs coupled to the charger, and a connection module adapted to connect the battery and charger to the mobile device. The charger may provide charging to the battery and an internal battery of the mobile device in parallel. The BBCD and mobile device may be enclosed in a single housing. The charger may include a planar transformer.12-20-2012
20120326514POWER SUPPLY CONTROL APPARATUS AND POWER SUPPLY CONTROL SYSTEM HAVING THE SAME - A power supply control apparatus is connected to an electric device to control supply of power to the electric device. The apparatus includes a main power switch to apply or interrupt main power to the electric device, the main power being external input commercial AC power, an auxiliary power storage unit supplied and charged with the main power as auxiliary power, a charging/discharging unit including a charging circuit to convert the main power into DC power and charge the converted DC power in the auxiliary power storage unit, and a discharging circuit to convert the DC power in the auxiliary power storage unit into AC power and discharge the converted AC power to the electric device, and a controller to control the main power switch, and control the charging/discharging unit to selectively drive the charging circuit or the discharging circuit.12-27-2012
20120326513POWER OFF DELAY CIRCUIT AND POWER SUPPLY SYSTEM - A power off delay circuit includes a first diode with an anode receiving input power and a boost transformer circuit connected to a cathode of the first diode. The boost transformer circuit outputs power signals to a load circuit, and includes a capacitor, a primary winding, a first secondary winding, and a second secondary winding. The capacitor is charged when an input power is on, and discharges when the input power is off. The first secondary winding boosts power flowing through the primary winding and the first switch branch to charge the capacitor via the third switch branch when the input power is on. The capacitor discharges via the second secondary winding and the fourth switch branch when the input power is off, and the primary winding boosts discharging power of the capacitor, and outputs boosted discharging power to the load circuit via the second switch branch.12-27-2012
20100231049APPARATUS AND METHOD FOR MANAGING A BACKUP POWER SUPPLY FOR AN AIRCRAFT COCKPIT VOICE RECORDER - Charge on a storage capacitor in a backup power supply is managed by discharging the capacitor into an aircraft recorder that is to be powered when a primary power source fails. During the discharging, a first amount of energy discharged from the capacitor is measured along with the length of the discharge time. The first amount of energy and the discharge time are employed to define a target energy level to which the capacitor should be charged to enable the backup power supply to adequately power aircraft recorder. Then charging of the capacitor commences while a second amount of energy stored in the capacitor is measured. The capacitor charging terminates when the second amount of energy reaches the target energy level. Definition of the target energy level also may take into account variation in temperature of the capacitor.09-16-2010
20110260544POWER SUPPLY UNIT HAVING PLURALITY OF SECONDARY BATTERIES - The power supply unit includes a lead secondary battery (first battery) that is capable of being charged with power generated by an alternator (power generator); a lithium secondary battery (second battery) that is electrically connected in parallel to the lead secondary battery, capable of being charged with power generated by the alternator (power generator), and has higher output density or higher energy density than the lead secondary battery; and a switching means that is electrically connected between the alternator and the lead secondary battery, and the lithium secondary battery, and switches between conduction and blocking. The switching means is configured by a plurality of MOS-FETs (semiconductor switches) being connected in series such that respective parasitic diodes present in the semiconductor switches face opposite directions.10-27-2011
20110260540BACKUP POWER SUPPLY FOR A VEHICLE - The backup power supply of the present invention is adapted for a vehicle, which has a power system. The backup power supply includes a motor electronic appliance and a battery. The motor electronic appliance is installed in the vehicle and electrically connects to the power system of the vehicle. The battery electrically connects to the motor electronic appliance, such that the battery can receive electric power from the power system or can supply electric power to the power system. As such, the backup power supply supplies backup power to the power system during the replacement of the motor lead-acid battery.10-27-2011
20120091814POWER SUPPLY APPARATUS - The power supply apparatus a main power device, an auxiliary power unit, and controlling means. Each of the main power device and the auxiliary power unit is configured to supply DC power to a DC supply line. The main power device is configured to generate DC power by use of power supplied from a secondary cell. The controlling means is configured to, when a measurement (a magnitude of a current flowing through the DC supply line) exceeds an optimal current magnitude, send an instruction to the main power device such that a current supplied from the main power device to the DC supply line has the same magnitude as the optimal current magnitude. The optimal current magnitude is defined as a magnitude of a current supplied to the DC supply line from the main power device operating so as to maximize a proportion of power supplied from the main power device to the DC supply line to the sum of power supplied from the secondary cell to the main power device and loss caused by an internal resistance of the secondary cell. The main power device is configured to adjust the magnitude of the current supplied to the DC supply line on the basis of the instruction received from the controlling means.04-19-2012
20120091813METHOD AND APPARATUS FOR PREDICTING END OF BATTERY LIFE - A powering subassembly for a portable electronic device includes a main battery, a converter, a backup battery, and a controller. The main battery provides a main voltage and the backup battery can provide a backup voltage. The converter receives the main voltage and increases it to at least one operating voltage. The controller receives the operating voltage from the converter, monitors the voltage of the main battery, and compares the monitored voltage to a main battery low voltage threshold. The controller transmits a disconnect signal to decouple the main battery from the converter if the monitored voltage from the main battery is less than the main battery low voltage threshold. The controller transmits a connection signal to couple the backup battery to the converter if the monitored voltage is less than the main battery low voltage threshold. The backup battery provides the power for a predetermined minimum amount of time.04-19-2012
20120091812POWER SWITCHING DEVICE - A power switching device including a rectifier circuit and a control circuit is provided. A first terminal of the rectifier circuit receives an external voltage source and a second terminal of the rectifier circuit is electrically connected to a node. The control circuit is electrically connected between the node and a battery. Furthermore, during a power supply mode, the control circuit provides a power supply path, so that the battery provides a battery current to the node. Besides, the control circuit detects the battery current and determines whether or not to switch to a normal mode from the power supply mode according to the detection result.04-19-2012
20100096928AUTOMATIC START-UP CIRCUIT AND UNINTERRUPTIBLE POWER SUPPLY APPARATUS HAVING SUCH AUTOMATIC START-UP CIRCUIT - An automatic start-up circuit for use in an uninterruptible power supply apparatus is provided. The uninterruptible power supply apparatus includes an energy storage unit and a switching circuit. The automatic start-up circuit includes an operating status detecting circuit and a secondary switch driving circuit. The operating status detecting circuit is connected to an energy storage unit connecting node for detecting an operating status of the energy storage unit through the energy storage unit connecting node, and generating an start-up control signal according to the operating status of the energy storage unit. The secondary switch driving circuit is connected to the operating status detecting circuit, a control terminal of the switching circuit and a common terminal for determining whether the switching circuit is automatically driven to be conducted to start up the uninterruptible power supply apparatus according to the start-up control signal.04-22-2010
20120139345CONTROL METHOD OF HYBRID POWER BATTERY CHARGER - A power supply system and method for operating same. The power supply system is connectable to receive power from an adapter and supply power to a load. The power supply system includes a rechargeable battery, a buck mode circuit, and a boost mode circuit. A switching circuit switches between the buck mode circuit and boost mode circuit for supplying power to the load. If the power required by the load reaches a first predetermined level related to an adapter overload condition for a first predetermined time, the switching circuit disconnects said buck mode circuit from the load and connects the rechargeable battery and the boost mode circuit to said load. The first predetermined level may be established by a first predetermined percent of the current of a dynamic power management level established by the load, which is related to a power level below that which can be provided by the adapter.06-07-2012
20130009482POWER SUPPLY SYSTEM - A power supply system includes an inverter controller which amplifies a deviation between a bus voltage command signal and a bus voltage signal obtained by detecting a bus voltage, inputs the amplified deviation to a first limit unit for limiting output power of a commercial power supply, divides the deviation into a first deviation within a first limit value of the first limit unit and a second deviation which exceeds a range of the first limit value, and controls an inverter on the basis of the first deviation, and a DC/DC converter controller which controls a DC/DC converter on the basis of the second deviation.01-10-2013
20130020874PORTABLE SOLAR POWER AND BATTERY CHARGER SYSTEM - A portable solar power and battery charger system configured to provide power to accessories and recharge batteries for example concurrently, with automatic switch over to batteries in a prioritized manner from multiple input sources, for example in the case of loss of sunlight and for example with the capability of orienting and aligning a solar panel regardless of available sunlight at setup time.01-24-2013
20100013316Uninterruptible power supply device with circuit for degradation judgment of storage battery - There is herein provided an uninterruptible power supply device with a degradation judgment circuit of a storage battery which can perform an exact judgment, continuing the power supply to a load apparatus stably without giving the excessive burden to the storage battery. The storage battery is floatingly charged from a rectifier connected with the power source. The device has the control circuit for controlling the output voltage of the rectifier and the degradation judgment circuit. The output voltage of the rectifier is lowered to below a steady state by the control circuit. As a result, the storage battery discharges with the current Idc restricted rather than rated discharge current. And a part of power supply is supplied to the load. The degradation judgment circuit judges the degradation of the storage battery based on the discharge voltage Vdc.01-21-2010
20130169051UNINTERRUPTIBLE POWER SUPPLY - An uninterruptible power supply (UPS) includes a rectifier, a buck converter, a solar energy module, a boost converter, a controller, and a power distribution unit (PDU). The solar energy module receives solar energy and converts the solar energy to a first DC voltage. The controller compares the first DC voltage with a preset voltage, and outputs a control signal to turn the boost converter on or off. When the boost converter is turned off, the rectifier receives an AC voltage from the AC power source and converts this to a rectified DC voltage which is output to the buck converter. When the boost converter is turned on, the boost converter converts the first DC voltage to a second DC voltage. The buck converter converts the rectified DC voltage or the first DC voltage to a working DC voltage and outputs to a power supply unit through the PDU.07-04-2013
20130140899Method, Apparatus for Emergency Power Supply and Device Associated Thereto - An apparatus comprises a transformer coupled to a mains power, a backup power source comprising a first battery, a first power supply line switch configured to switch the power source between the backup power source and the mains power, a connecting interface coupling the power source to an external electronic device comprising a second battery which is rechargeable and a second power supply line switch which is configured such that the external electronic device is able to be powered by either the power source or a second battery, and a charging detector configured to detect the availability of the mains power, wherein the first power supply line switch is further configured to couple the backup power source to the external electronic device via the connecting interface when the mains power is not available such that the first battery is able to deliver power to the external electronic device.06-06-2013
20080224542UNIVERSAL SWITCH CONTROL APPARATUS - An equipment controller includes an actuator control module configured for connection to an actuator that provides operational control of a piece of monitored equipment; a sensing module configured to monitor a state of a parameter of the monitored equipment; an optional local control interface for the actuator control module and the sensing module; and a secondary power system to provide operational power for the actuator control modules, the sensing modules and the control interface when primary power to the equipment controller is not available. Where desired, a communications interface to permit communications with a remote operations center may be included. Some or all of the modules may be contained in water tight housings, permitting operation of the equipment controller even when fully submerged in water.09-18-2008
20120205982UNINTERRUPTIBLE POWER SUPPLY SYSTEMS AND METHODS USING AN ISOLATED NEUTRAL REFERENCE - An uninterruptible power supply (UPS) system includes an AC input configured to be coupled to an AC power source, an AC output configured to be coupled to a load and a power converter circuit coupled to the AC input and the AC output and configured to selectively provide power to the load from the AC power source and an auxiliary power source. The UPS system further includes a control circuit operatively coupled to the power converter circuit and configured to generate at least one galvanically isolated neutral reference from the AC power source and/or from the AC output and to control the power converter circuit responsive to the generated at least one neutral reference. In particular, the control circuit may be configured to generate the neutral reference from a three-wire AC connection.08-16-2012
20130175867GRID-CONNECTED POWER STORAGE SYSTEM AND METHOD FOR CONTROLLING GRID-CONNECTED POWER STORAGE SYSTEM - A grid-connected power storage system for coupling a power generation system to a grid, including: a main battery for discharging stored power to the load system; at least one additional battery coupled to the main battery for discharging stored power to the load system; a bidirectional converter coupled to the main and additional batteries, and including a plurality of switches for performing a conversion between a DC link voltage, between the power generation system and the grid, and a battery voltage, a first switch of the plurality of switches corresponding to the main battery and a second switch of the plurality of switches corresponding to the additional battery, wherein the first and second switches are connected to each other in parallel; and an integrated controller for selectively controlling operations of the first switch and the second switch based on an amount of power used by the load system.07-11-2013
20130140901DC POWER SUPPLY SYSTEM - A DC power supply system includes a DC power supply and a secondary battery for backing up the DC power supply. When a voltage of the DC power supply is lower than a voltage of the secondary battery, the DC power system adds an extra voltage to the voltage of the DC power supply to provide an input voltage to the secondary battery higher than the voltage of the secondary battery by using an electric power of the secondary battery, and the secondary battery is charged.06-06-2013
20110273019SOLAR PANEL POWER MANAGEMENT SYSTEM AND METHOD - A controlled switching arrangement from a first mode of power transfer, in which an ecological power source (EPS) directly charges a battery during times of a utility power outage to a second mode of power transfer in which the EPS output is fully delivered through a grid-interactive inverter so as to provide A.C. power to the grid power connection. A single switching operation switches between power transfer modes as a function of an availability of the utility power output over the grid power connection such that a percentage of utility power output is supplied directly to the battery in the second mode so as to maintain the battery in a charged condition for use during the times of the utility power outage, and an off-grid inverter converts charge stored in the battery into A.C. power when the controller is switched to the first mode of power transfer.11-10-2011
20110273018HIGH-EFFICIENCY DC BALLAST ARRANGEMENT WITH AUTOMATIC POLARITY PROTECTION AND EMERGENCY BACK-UP FOR LIGHTING FIXTURE IN A SUSPENDED DC-POWERED CEILING SYSTEM - A high-efficiency ballast arrangement for a lighting fixture has an automatic polarity protection circuit for supplying an output DC voltage of constant polarity no matter in which orientation the fixture is mounted in a DC-powered suspended ceiling system having a DC power supply. A main DC ballast circuit includes a main DC ballast powered by the output DC voltage from the protection circuit to enable a lamp in the fixture to be illuminated during normal operation. An emergency back-up DC ballast circuit includes a battery charged to a charged DC voltage by the output DC voltage during the normal operation, and an emergency DC ballast powered by the charged DC voltage from the battery to enable the lamp in the fixture to be illuminated during emergency operation upon failure of the DC power supply.11-10-2011
20130140900Electronic Device, Wireless Power Supply System Thereof and Wireless Power Supply Method Thereof - An electronic device (06-06-2013
20130147277POWER MANAGEMENT SYSTEM - A power management system adjusts a first output voltage delivered to a load and adjusts a second output voltage delivered to a battery. The power management system includes an error amplifier for comparing the first output voltage with a first voltage reference indicative of an operating voltage of the load and for accordingly generating a first error signal. The power management system further includes a DC/DC converter for adjusting the first output voltage and the second output voltage by adjusting a duty cycle of the DC/DC converter and an error generator for controlling the duty cycle based on the first error signal. If the first output voltage is lower than the first voltage reference, the error generator reduces the duty cycle and a charging current of the battery based on the first error signal.06-13-2013
20100295373METHOD AND APPARATUS FOR THE LOSS-FREE TRANSMISSION OF ELECTRICAL ENERGY - In a method and an apparatus for the loss-free transmission of electrical energy between a DC source and a lossy load circuit, the DC source is connected, via a radio-frequency broadband line, to at least one quantum storage cell which feeds the lossy load circuit, with the result that the electrical energy is transmitted from the DC source to the quantum storage cell in the form of current pulses corresponding to the Dirac function.11-25-2010
20130154378METHOD FOR CONTROLLING A PARALLEL LINE-INTERACTIVE UNINTERRUPTIBLE POWER SUPPLY SYSTEM - A method for controlling a parallel line-interactive uninterruptible power supply (UPS) system having multiple line-interactive UPSs parallelly connected, in which each line-interactive UPS has a switching element and a power output terminal connected to a load through the switching element, has a step of acquiring a switching status from the switching element when the switching element is switched to determine next switching time of the switching element so that the switching time is adjacent to a zero phase angle point of an input voltage cycle of the mains power. The method further has the switching elements of all line-interactive UPSs switched at the same time for all the line-interactive UPSs to evenly share the load, thereby preventing the line-interactive UPSs from being damaged due to concentrated load current on single line-interactive UPS arising from dramatically different switching time of the switching elements.06-20-2013
20130119768POWER SUPPLY HAVING REDUNDANT POWER - A power supply system providing backup power comprises at least one power supply, at least one power storage unit and a power integration panel. The power supply converts an input power into a conversion power and sends at the same time a power good signal to a motherboard. The power storage unit receives the conversion power in normal conditions and saves electric energy to generate a backup power. The power integration panel includes a power control unit connected to the power supply to determine whether the conversion power is output through the power good signal, a backup control unit connected to the power storage unit to compare the conversion power and backup power to determine whether the backup power is output, and a power regulation unit connected to the power control unit and backup control unit to regulate the conversion power or backup power to be an output power.05-16-2013
20110309681SECONDARY BATTERY CONTROLLER AND METHOD FOR CONTROLLING SECONDARY BATTERY, AND ELECTRONIC APPARATUS - The present invention provides a secondary battery controller and a method for controlling a secondary battery that can increase the continuous operating time of an apparatus in which a plurality of secondary batteries are switched and used, and an electronic apparatus. The secondary battery controller includes the following; a plurality of temperature detectors that detect temperatures of a plurality of secondary batteries having the same rating, respectively; a switching device that connects an output of any one of the plurality of secondary batteries to a load; and a control portion that selects which secondary battery to use from the plurality of secondary batteries and controls the switching device to switch between the secondary batteries based on temperature information of each of the plurality of secondary batteries obtained by the temperature detectors. The control portion connects the selected secondary battery to the load, and then switches the secondary battery connected to the load to another non-selected secondary battery in sequence when the first selected secondary battery reaches a predetermined threshold temperature, and further reconnects the first selected secondary battery to the load when the last selected secondary battery reaches the threshold temperature after all the secondary batteries have been selected.12-22-2011
20110309680Battery Back Up for Electronic Modules - A battery backup system for providing uninterrupted power to components within a vehicle electronic control module (ECM). The backup system comprises a header connector with a recessed region for the battery. A connector plug is plugged into the header connector over the battery to cover the battery and shield the battery. The backup battery is disposed within the recessed region in contact with electrical contacts extending from the housing of the ECM, the electrical contacts providing a connection between the backup battery and an electronic component needing a backup power supply. Additional terminals on the connector plug can be used to provide power to the backup battery. The backup battery can be in a closed circuit with the electronic component, or the backup battery circuit can be switched to form a closed circuit with the electronic component when the electronic component no longer receives power from the primary power source.12-22-2011
20130187471BATTERY LEAKAGE CURRENT ELIMINATION IN UPS UNITS - Aspects of the disclosure relate generally to uninterruptible power supply (“UPS”) units for systems requiring back up power. The UPS units include circuitry for controlling charging and allowing discharging of a battery. The circuitry includes a controller as well as a pair of metal-oxide semiconductor field effect transistors (“MOSFET”) switches. The pair of MOSFET switches includes a charging and a discharging MOSFET switches in series with the battery operating as a bidirectional switch. A UPS unit may be charged and subsequently stored for period of time. During this time, plurality of features may prevent current leakage from the batteries. For example, PNP bipolar transistors and additional MOSFET switches may be used to prevent current leakage. These features alone or in combination may allow for long term storage of the uninterruptible power supply units without current leakage.07-25-2013
20090179495Solar power supplying device - A solar power supplying device includes a solar power collecting plate, a socket, an uninterruptible power supplying apparatus and an electric apparatus. The solar power collecting plate is used to absorb the solar power of sunlight and convert the solar power into a first power source. The socket is used to provide a second power source. The uninterruptible power supplying apparatus is provided with a built-in power source selector that is connected with the solar power collecting plate and the socket and is capable of selecting power inputs of the first power source and the second power source. An output end of the uninterruptible power supplying apparatus is combined with the electric appliance. The power source selector switches between the first power source and the second power source, thereby reducing the power source and cost.07-16-2009
20130187470Emergency Lighting with Charging Indicator Circuitry - Emergency lighting with a charging indicator circuitry comprises a power source module, a lighting circuit, a battery circuit, and an emergency switch circuit. The battery circuit includes charging indicator circuitry and a battery module; the power source module is connected with the battery module via the charging indicator circuitry. When the utility power is interrupted or a test switch is pressed, the light of the charging indicator circuitry goes out to indicate that the emergency lighting is in discharging status. When the utility power is supplied normally, if a battery within the battery module is in disconnected state, the light of the indicating circuitry goes out to indicate that the emergency lighting is in disconnected state. The charging indicator circuitry may be a simple light-emitting indicating circuit, has no need for much modification to the original circuit during manufacture and design, and may be simple and quickly-responsive.07-25-2013
20130187469REDUNDANT POWER SUPPLY UPS MODULE - The redundant power supply UPS module for an electronic system contains at least a first power supply electrically connected to an external AC power source and converting the AC electricity from the AC power source to DC electricity for powering the electronic system; at least a second power supply; a battery electrically connected to the second power supply for providing DC electricity to the second power supply; and a control module electrically connected to the first and second power supplies and capable of detecting the stored electricity of the battery and power interruption from the AC power source, and capable of controlling the charge and discharge of the battery.07-25-2013
20130193764FORM FACTOR SWAPPABLE DC BATTERY BACK-UP - In accordance with the present disclosure, a system and method for providing a battery back-up unit (BBU) for a rack-level power infrastructure is described. The system may include a chassis sized to fit within a commodity power supply unit (PSU) slot in a power distribution unit (PDU). A battery may be disposed within the chassis, and at lease one power module coupled to the battery. The system may also include a power module controller coupled to the at least one power module, and a form-factor connector coupled to the power module controller and the at least one power module.08-01-2013
20130200708UPS ELECTRICITY SUPPLY CONTROL CIRCUIT AND UPS ELECTRICITY SUPPLY - A UPS control circuit and a UPS is provided. The UPS includes a rechargeable battery and a UPS control circuit connected with the rechargeable battery. The UPS control circuit includes an input filtering circuit, a rectification circuit, an inversion circuit, a static transfer switch, an output filtering circuit, a control circuit, and a multipurpose DC/DC circuit connected between the rechargeable battery and an output terminal of the rectification circuit. The multipurpose DC/DC circuit is controlled by the control circuit. In a battery mode, the rechargeable battery supplies an input voltage to the inversion circuit via the multipurpose DC/DC circuit. In a mains power mode, the rechargeable battery is charged by an output voltage of the rectification circuit via the multipurpose DC/DC circuit. Therefore, no independent charging circuit is needed to charge the rechargeable battery, causing a simpler circuit structure and a lower cost, and providing greater value to the customer.08-08-2013
20120086278FUEL CELL SYSTEM - Weld of a relay provided on an electric power supply path can be suppressed. When a fuel cell system starts, a controller sets an output voltage of a Bat converter at an open circuit voltage of a battery and sets an output voltage of a FC converter at an open circuit voltage of a fuel cell. When the output voltage of the FC converter is lower than the output voltage of the Bat converter, the controller controls to boost the output voltage of the FC converter to the output voltage of the Bat converter. On the other hand, when the output voltage of the FC converter is the output voltage of the Bat converter or more, the controller controls to boost the output voltage of the Bat converter to the output voltage of the FC converter. When the output voltage difference between the FC converter and the Bat converter is a predetermined value or less capable of turning the FC relays ON without causing welding of the FC relays, the controller turns the FC relays ON.04-12-2012
20120086277METHOD AND APPARATUS FOR PROVIDING UNINTERRUPTIBLE POWER - Methods and apparatus for providing uninterruptible power are provided by aspects of the invention. One aspect is more particularly directed to an uninterruptible power supply for providing power to a load. The uninterruptible power supply includes a first input to receive input power from an input power source, an output to provide output power, a bypass input to receive bypass power from a bypass power source, wherein the bypass input is selectively coupled to the output to provide output power from the bypass power source, an input power circuit coupled to the first input and having a DC output that provides DC power having a first DC voltage level, a back-up power source coupled to the input power circuit to provide DC power at the DC output in a back-up mode of operation, and an inverter circuit having an output coupled to the DC output of the input power circuit and having an output coupled to the output of the uninterruptible power supply to provide the output power derived from at least one of the input power source and the back-up power source. The uninterruptible power supply is constructed and arranged in a bypass mode of operation to control the inverter circuit to convert AC power from the bypass power source at the output of the inverter circuit to DC power at the input of the inverter circuit.04-12-2012
20120086276Supplying Power To An Electronic Device Using Multiple Power Sources - An electronic device includes multiple power sources (04-12-2012

Patent applications in class Storage battery or accumulator

Patent applications in all subclasses Storage battery or accumulator