Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Matsushita Electrical Industrial Co., Ltd.

Matsushita Battery Industrial Co., Ltd.

Seiichi Uemoto

Kenji Kimura

Takabumi Fujii

Tatsuya Hashimoto

Masatomo Nagatani

Hironori Yukisada

Kiyomi Kozuki

A battery, suitable for forming a battery pack, includes an electrode assembly having a positive electrode plate and a negative electrode plate, and a separator wound or laminated together, core materials of the negative and positive electrode plates being bared respectively at either end. A bottomed cylindrical outer case having a bottom is connected to either end face of the electrode assembly to serve as a battery terminal. Electrolyte is impregnated in the electrode assembly and a lid connected to the other end face of the electrode assembly and fixedly attached to the outer case with a sealer and an insulator interposed therebetween. A connecting part is a part of the lid so that the connecting part engages with and connects to a bottom part of the outer case of another battery.

Battery and battery assembly

In a battery pack () that accommodates a plurality of batteries () arranged in parallel in a case () that forms a cooling-air passage (), the cooling-air passage () and a gas-discharge passage () for discharging gas leaking from the battery () when the battery () falls into abnormal state are formed and separated from each other in the case ().

Battery pack

A battery case is formed by juxtaposing a plurality of electrode plate group housing chambers. An electrolyte-impregnated electrode plate group is housed in each of the housing chambers. A side plate is arranged in abutment with each side face of the battery case. The respective side faces are faced with the openings of the electrode plate group housing chambers. This makes it possible to close the openings of the electrode plate group housing chambers. Thus, the cells and the battery module are fabricated concurrently.

Battery module

In a battery having a structure that an electrode plate group, formed by winding a positive electrode plate and a negative electrode plate with a separator interposed therebetween, is housed in a battery case together with an electrolyte solution, the electrode plate group is rolled around a roll core, and both ends of the roll core are supported by the battery case.

Battery having nonconductive core

A battery power source device is provided for supplying high electric power used for a drive power source for a vehicle. The battery power source device includes a battery box for storing a plurality of batteries arranged in a connected state in a battery storage room, an inlet opening for introducing a temperature control medium into the battery storage room, an outlet opening for discharging the medium from the battery storage room to the outside, a medium circulation passage for leading the medium discharged from the outlet opening to the inlet opening for feeding into the battery storage room again, and a medium transport device for forcing the medium flow.

Growing community of inventors

Izumi, Japan

Seiichi Uemoto