Sanyo Electric Co., Ltd.

Mitsubishi Denki Kabushiki Kaisha

Renesas Technology Corp.

Masaya Nakano

Haruhiko Yoneda

Osamu Inaoka

Takao Takatsu

Yasuhiko Tsukikawa

Susumu Tanida

Mikio Sakurai

Kensaku Takeda

Takahiko Fukiage

Satoshi Kawakami

Hiroshi Arikawa

Kazuaki Fukutome

Jyunichi Fukumori

Hidemi Kurihara

In a battery pack, a battery core pack is housed in an outer case where a gas discharge hole is closed by a breathable waterproof sheet, a design sheet is disposed to cover the breathable waterproof sheet, a gas groove is provided between the breathable waterproof sheet and the design sheet, and the gas groove communicates with a discharge side of the breathable waterproof sheet.

Battery pack

A battery pack includes a plurality of batteries that are chargeable and dischargeable, a battery holder that arranges the batteries at predetermined positions, and a bus bar that is a metal sheet fixed to electrode terminals of the batteries. The bus bar includes: a plurality of fixed terminals connected with the electrode terminals of the batteries; a base that connects the plurality of batteries with each other through the plurality of fixed terminals in series and/or in parallel; and fuse links that include ends connected with the fixed terminals, respectively, and roots that are connected with the base. The battery pack further includes a heat insulating member that tightly covers surfaces of the fuse links, and surfaces of the fixed terminals connected with the fuse links, respectively.

The battery pack includes: a plurality of battery cells each formed by closing an opening of a bottomed cylindrical outer can with a sealing plate; a battery holder to hold the plurality of battery cells in a mutually parallel attitude and hold electrode terminals provided at both ends of each battery cell in an attitude disposing on a same plane; and an outer case to house a battery assembly formed by holding the plurality of battery cells in the battery holder. The battery holder includes: a holding part to hold the ends of the plurality of battery cells along outer peripheral surfaces of the outer cans; and a cover on an end surface side of the plurality of battery cells held by the holding part. When the battery cell is abnormal, the cover is deteriorated by energy of a jetting body jetted from an end surface of the battery cell.

Battery pack includes: a plurality of chargeable/dischargeable cylindrical cells; battery holder in which the plurality of cylindrical cells are disposed; and thermally conductive resin that closely adheres to cylindrical cells, which are stored in battery holder, in a thermally coupled state above battery holder. Battery holder includes: bottom plate including a plurality of holding grooves in which cylindrical cells are disposed; and partition walls that are disposed between holding grooves and between adjacent cylindrical cells. Partition walls are lower than the diameter of cylindrical cells disposed in holding grooves, thermally conductive resin is disposed between adjacent cylindrical cells above partition walls, and thermally conductive resin interconnects adjacent cylindrical cells.

A battery pack detachably mounted in a device for supplying power to the device to operate the device includes at least one rechargeable secondary battery (), a battery case () housing the rechargeable secondary battery (), a mounting mechanism for mechanically mounting the battery case () in the device, an electrical connection connected electrically to the device for supplying power to the device, and a pack circuit board () securing the electrical connection. The battery case () is divided into a first casing and a second casing, the pack circuit board () is secured to the inside surface of the first casing, and the mounting mechanism is installed so the mounting mechanism is at least partially exposed on the surface of the first casing.

The purpose of the present invention is to provide simpler and more reliable electrical wiring than a lead wire. A battery pack includes at least one rechargeable secondary battery (), a battery holder () for housing the secondary battery () in a predetermined position, a pack circuit board () having a mounted electronic circuit for monitoring the secondary battery (), and an electrical connection wire () for electrically wiring the pack circuit board (). Here, the electrical connection wire () is a bent metal wire. Because wiring is realized using metal wire, and the metal connection is secured after the wiring has been completed, movement and deformation due to vibrations and other factors, such as that which occurs in the case of conventional lead wires, are avoided, and reliability can be improved. Because the present invention has the simple configuration of a bent metal wire, manufacturing can be simplified, manufacturing costs can be reduced, and components requiring insulation to improve reliability can be reduced, thereby lowering material costs.

A voltage dividing circuit outputs a divided voltage of a maximum output voltage which can be driven by a boosting pump. A reference voltage generating circuit outputs a first reference voltage corresponding to a target level of a boosted voltage. A level selecting circuit compares the level of the divided voltage with that of the first reference voltage to select one of the voltages that has a lower voltage level. Then the selected voltage is supplied as a second reference voltage to a level sensing circuit.

Internal voltage generating circuit with variable reference voltage

In the case where a defective normal word line in a memory cell array has been replaced with a spare word line, a word line precharge signal output from a word line precharge signal generation circuit is activated to L level during a precharge period. As a result, a normal word line activation circuit holds the defective normal word line at a precharge potential level. Accordingly, the semiconductor integrated circuit device stably conducts sensing operation even when the defective normal word line replaced with the spare word line is short-circuited to a bit line.

Semiconductor integrated circuit device having spare word lines

A reset signal generating circuit in a synchronous semiconductor memory device outputs a reset signal ZPOR1 in response to a power on reset signal ZPOR generated immediately after power on and an initialize command (for example, a precharge command) executed for initialization after power on. A test mode register included in a mode setting circuit receives as a reset signal, the reset signal ZPOR1. Consequently, a test mode signal output attains to an NOP state, or output of the test mode signal is stopped.

Growing community of inventors

Hyogo, Japan

Masaya Nakano