Patent application number | Description | Published |
20080231229 | Charging Device - A charging device includes a charging unit, a detecting unit, a determining unit, a current generating unit, an adjusting unit, and a display unit. The charging unit charges a battery. The detecting unit detects a voltage developed across the battery. The determining unit determines a charging state of the battery based on the voltage. The current generating unit generates a current. The adjusting unit adjusts the current based on the charging state. The display unit emits a first light having a first color and a first intensity in response to the current supplied thereto. The first intensity changes in accordance with changing of the current. | 09-25-2008 |
20090108804 | Charging Device - A charging device has a charging unit and a control unit. The charging unit charges a battery pack the battery pack being either a first type or a second type of battery pack. The first type of battery pack includes a single battery cell or a first plurality of battery cells connected in series. The second type of battery pack includes a single battery unit or a second plurality of battery units connected in series. Each battery unit includes at least two battery cells connected in parallel. The control unit controls the charging unit to control at least one of a charging current flowing through the battery pack and a charging voltage applied across the battery pack, depending on the battery pack to be charged. | 04-30-2009 |
20090189562 | Charging System for Charging Battery Pack - A charging system has a battery pack and a charging device. The battery pack has a battery cell and a plurality of identifiers that identify a configuration of the battery cell. The charging device has a charging unit, a signal transmission unit, a reading unit, and a control unit. The charging unit charges the battery pack. The signal transmission unit transmits a first signal and a second signal to the battery pack separately to read the plurality of identifiers when the battery pack is attached to the charging unit. The reading unit reads the plurality of identifiers according to the first and second signals to determine the configuration of the battery cell. The control unit controls the charging unit according to the configuration of the battery cell. | 07-30-2009 |
20090305115 | LITHIUM BATTERY PACK - For a lithium battery pack including battery cells the number of which is larger than the number of battery cells | 12-10-2009 |
20110025255 | Solar Power System For Charging Battery Pack - A solar power system has a charging device. The charging device is powered by a solar cell to charge a battery pack having a secondary cell. The charging device has input voltage detection circuit that detects an input voltage from the solar cell; switching circuit that converts the input voltage to supply a charging current to the battery pack; charging current detection circuit that detects the charging current; and control circuit that controls the switching circuit to change the input voltage in order that a resultant charging current becomes suitable for charging the battery pack. | 02-03-2011 |
20110101911 | Battery Charger With Charge Abnormality Checking Function - A battery charger has an abnormal condition checking function for checking unintentional or accidental charging of a secondary battery. A charge circuit charges the battery when a switching element interposed between a power source and the battery is turned on. Current which may flow in the charge circuit is detected when the battery is not to be charged by turning the switching element on. When the current is detected in such a condition, an abnormality signal is produced to cause the charge circuit to be disabled. | 05-05-2011 |
20110253402 | Battery Pack and Cordless Power Tool Having The Same - A compact battery pack with high handling ability and restraining degradation of battery cells. The battery pack includes an insertion portion to be inserted into a handle portion of a cordless power tool and an accommodation portion in which all battery cells are accommodatable. A protection board with a protection circuit that protects batteries against overcharge and over-discharge is installed in the insertion portion. A switching element is connected between the battery cells and a drive motor of the power tool. An air passage in communication with the battery pack is formed within the handle and a main housing of the cordless power tool. The switching element is positioned at the air passage. | 10-20-2011 |
Patent application number | Description | Published |
20090033291 | BATTERY CHARGER - A charging signal Vi responding to a charging current is inputted to one input terminal (−) of an operational amplifier | 02-05-2009 |
20090102428 | BATTERY CHARGER - A setting current switching circuit | 04-23-2009 |
20100038103 | Electrical Power Tool - An electrical power tool includes a housing, an electrical motor, an end-bit holding section, a transmitting mechanism, a cap, and a lighting section. The housing has one end. The electrical motor is accommodated in the housing and is configured to generate a rotational driving force. The end-bit holding section is provided at the one end and is rotatable about a rotational axis. The transmitting mechanism transmits the rotational driving force to the end-bit holding section. The cap is attached to the one end. The lighting section allows an entirety of the cap to be luminous. | 02-18-2010 |
20100065295 | CORDLESS POWER TOOL AND ACCOMODATION CASE - There are provided a cordless power tool powered by a power supply unit that does not require a charging device and a charging power supply unit and an accommodation case thereof. In a cordless power tool, a front-end tool | 03-18-2010 |
20110140664 | CHARGING APPARATUS AND CHARGE CONTROL METHOD - A charging apparatus able to safely and reliably secure capacity is provided. The charging apparatus comprises: a charging current configuration unit that configures a set value for the charging current flowing to the battery; a charging current controller that controls the charging current on the basis of the set value configured by the charging current configuration unit; a cell voltage detector that detects the cell voltages applied to each cell; and a voltage determining unit that determines whether or not at least one of the cell voltages detected by the cell voltage detector has exceeded a threshold voltage. If it is determined by the voltage determining unit that at least one of the cell voltages has exceeded the threshold voltage, then the charging current configuration unit switches the set value to a smaller value. | 06-16-2011 |
20110199059 | CHARGING SYSTEM AND BATTERY PACK - A charging voltage or an overcharge determination value for determining an overcharge state is set taking into consideration the states of secondary battery cells of a battery pack during charging. Charging of the secondary battery cells is then carried out using charging voltages set taking into consideration the states of the secondary battery cells. It is then determined whether or not the secondary battery cells are in an overcharged state using overcharge determination value is set taking into consideration the states of the secondary battery cells. | 08-18-2011 |
20130095350 | BATTERY PACK AND POWER TOOL - A battery pack, includes: a battery set including at least one battery cell; a protection IC configured to protect plural kinds of the battery sets, which produce different voltages, from overcharging and overdischarging, the protection IC including terminals for setting the different voltages of the battery sets; and a board configured to mount, on a surface of the board, circuit components including the protection IC and a connection unit which is connected to the terminals based on the produced voltage of the battery set to be connected to the protection IC. | 04-18-2013 |
20130113438 | Power Tool - A power tool including: a motor configured to be rotated by a lithium-ion secondary battery; an end tool configured to be driven by the rotation of the motor; and a switch configured to cause power to be supplied from the lithium-ion secondary battery to the motor when being manipulated by an operator, wherein the lithium-ion secondary battery includes a cell having a 14500 size and is configured to rotate the motor such that an output of the motor is sufficient for driving the end tool. | 05-09-2013 |
Patent application number | Description | Published |
20130284480 | POWER TOOL - In a power tool including: a housing having a body portion which houses a motor and a handle portion extending downward from the body portion; an output portion driven at the front of the motor; and a trigger switch which controls power supply from a battery to the motor, the motor, the battery, and the trigger switch are arranged so as to overlap each other in an intersecting direction with respect to a front-and-rear direction. | 10-31-2013 |
20140001853 | CHARGER AND POWER SUPPLY SYSTEM | 01-02-2014 |
20140014384 | POWER TOOL - A power tool includes a small-size lithium ion secondary battery used as its driving source, and at least one lithium ion secondary battery having a diameter of 14 mm is disposed inside a grip portion of a main body of the power tool. The lithium ion secondary battery has a sufficient output characteristic required for driving the power tool. When a switch installed in the main body of the power tool is operated by a user, electric power is supplied to a driving unit including a motor so that the power tool is activated. The lithium ion secondary battery is of a pack type, or is directly housed inside the grip portion, and the grip portion, which houses three of the lithium ion secondary batteries, is designed to have a diameter of 51.8 mm or less. | 01-16-2014 |
20150188332 | Backpack-Type Power Supply - A rechargeable system includes: a charger ( | 07-02-2015 |
20150236536 | Charging Device - A charging device ( | 08-20-2015 |