Patent application number | Description | Published |
20080290834 | BATTERY CHARGER - A battery charger for charging a plurality of secondary batteries is provided. The charger is configured to be connected to a power supply circuit and configured so that an output of the circuit is connected to the batteries. The battery charger includes a first switch for connecting the batteries in series, a second switch to selectively connect a first polarity terminal of a first secondary battery having a highest electric potential, a DC-DC converter having a first and second polarity input terminals, the first polarity input terminal being to be connected to the first polarity terminal via the second switch, the second polarity input terminal being to be connected to a second polarity terminal of a second secondary battery having a lowest electric potential, an external power supply output terminal connected to an output terminal of the DC-DC converter, and a controller for controlling the first and second switches. | 11-27-2008 |
20080315846 | BATTERY PACK, BATTERY CHARGER AND CHARGING METHOD - A battery pack, a battery charger, a method for charging a battery pack are provided. The battery pack includes a secondary battery, a switch element for controlling charging and discharging the secondary battery, a controller for controlling the switch element, and a communication unit for performing with a battery charger. During charging, an initial charging is switched to a quick charging when a voltage of the secondary battery reaches a predetermined voltage, and the battery charger judges the battery pack as abnormal when the voltage does not reach the predetermined voltage within a timeout period after the initial charging is started. At least one of the timeout period and the predetermined is stored. At least one of the timeout period and the predetermined voltage to be read out is transmitted through the communication unit to the battery charger. | 12-25-2008 |
20090027011 | BATTERY CHARGER - A batter charger for charging a secondary batter using a power supply circuit which converts an AC input into a DC output, includes a first resistor for detecting constant-current control and a second resistor for detecting end of charging. The first resister and the second register are inserted in series in a current path of the charging current. The power supply circuit has output characteristics of a constant-current control characteristic and a constant-voltage control characteristic. The constant-current control is performed using a first detection voltage generated at the first resistor, and the constant-voltage control is performed by comparing a second detection voltage generated at a series resistor composed of the first resistor and the second resistor with a reference voltage using a comparator, and detecting an end of charging indicated by the second detection voltage fallen below the reference voltage. | 01-29-2009 |
20090027012 | BATTERY CHARGER - A battery charger for charging a secondary battery using a power supply circuit, includes a discrimination circuit to discriminate a constant-current charging mode and a constant-voltage charging mode, and a controller to which a discrimination signal is supplied. When judged as being the constant-current charging mode, the controller sets the current in the constant-current charging mode by using the control signal. When judged as being the constant-voltage charging mode in accordance with the discrimination signal, the controller sets intermittently the end of charging detection current, and sets an end of charging detection period for judging the constant-current charging mode and the constant-voltage charging mode. When the discrimination signal indicates the constant-voltage charging mode in the end of charging detection period, the controller controls to shift to the end of charging detection mode. | 01-29-2009 |
20100090647 | CHARGING APPARATUS - A charging apparatus includes a power supply circuit converting AC input into DC output, a secondary battery, having a plurality of batteries connected in series, which is charged by an output voltage of the power supply circuit, a charging control circuit that controls charging in a constant-current mode for charging the secondary battery with a constant current and, when a terminal voltage of the secondary battery reaches a predetermined voltage, switches the charging in the constant-current mode to a constant-voltage mode for charging the secondary battery to a constant voltage, and a plurality of voltage control circuits, each of which adjusts the voltage of each of the plurality of batteries to a set voltage. The plurality of voltage control circuits respectively detect voltage rises of the plurality of batteries, and one of the voltage control circuits, first detecting attainment of the set voltage, performs subsequent voltage control. | 04-15-2010 |
20120326725 | MONITORING APPARATUS, MONITORING CONTROL APPARATUS, POWER SUPPLY APPARATUS, MONITORING METHOD, MONITORING CONTROL METHOD, POWER STORAGE SYSTEM, ELECTRONIC APPARATUS, MOTOR-DRIVEN VEHICLE, AND ELECTRIC POWER SYSTEM - A monitoring apparatus includes a first converter that converts first analog data indicating a voltage value of each of batteries into first digital data; and a second converter that converts second analog data indicating an electric current value flowing through the plurality of batteries into second digital data. The first analog data and the second analog data are data having the same timing. | 12-27-2012 |
20130049457 | ELECTRIC STORAGE APPARATUS, ELECTRONIC DEVICE, ELECTRIC VEHICLE, AND ELECTRIC POWER SYSTEM - A battery system includes a plurality of electronic storage modules serially connected together. Each electronic storage module includes a battery block group including a plurality of battery cells, and a different magnetic core connected to each battery block group. | 02-28-2013 |
20130059182 | POWER STORAGE APPARATUS AND ELECTRIC VEHICLE - A power storage apparatus, electric device, electric vehicle, and power system are disclosed. In an example embodiment, a power storage apparatus includes a battery block comprising a plurality of battery cells and an isolating unit that enables wireless information transfer regarding battery information of the battery block. | 03-07-2013 |
20130264865 | ELECTRIC POWER SUPPLYING APPARATUS, ELECTRIC POWER SUPPLYING METHOD, INVERTER, AND ELECTRIC VEHICLE - The present disclosure provides an electric power supplying apparatus including: an electric storage device; and a control portion configured to control processing for mixing an output from the electric storage device, and an electric power of an external electric power system with each other in accordance with at least one of a peak shift command, a load electric power, and a remaining capacity of the electric storage device, wherein an alternating current electric power is formed in the mixing processing. When the electric power supplying apparatus further includes an electric power generating apparatus, processing for mixing an output from the electric power generating apparatus, an output from the electric storage device, and an electric power of the external electric power system with one another, is controlled. | 10-10-2013 |
20140354212 | POWER RESERVE APPARATUS, POWER SYSTEM, AND ELECTRIC VEHICLE - A power reserve apparatus is disclosed. In one embodiment, the power reserve apparatus comprises a first module including a first set of battery cells and a first inter-cell balance adjustment unit configured to use passive balancing to reduce voltage variance among the first set of battery cells. The power reserve apparatus also comprises a second module including a second set of battery cells and a second inter-cell balance adjustment unit configured to use passive balancing to reduce voltage variance among the second set of battery cells. The power reserve apparatus further comprises an inter-module balance adjustment unit configured to use active balancing to reduce voltage variance among the first and second modules. | 12-04-2014 |