Sanyo Electric Co., Ltd.

Yuusuke Okii

Masakazu Naito

Chiharu Nakahara

Satoru Matsuyama

A power supply device has a structure in which a bind bar having bent pieces at both ends coupled to end plates disposed at both end portions of a battery stack is divided in a width direction of a side surface of the battery stack, the bent piece of each bind bar is bolted to an outer surface of one of the end plates, the one of the end plates is provided with a stopper wall that prevents rotation of a bent piece fixed with a single bolt, which is fixed to the one of the end plates via one bolt, and the bent piece is fitted to a stopper wall to prevent the displacement of the bind bar.

Power supply device and electric vehicle provided with power supply device

A pair of end plates are disposed at both end surfaces of a battery stack in which the plurality of battery cells are stacked, end plates are coupled to a bind bar, the battery stack is sandwiched between the end plates to be held, an elastic sheet that is elastically deformable in a thickness direction is disposed in a compressed state between the bind bar and a facing side surface of the battery stack, and the elastic sheet in the compressed state elastically holds the battery stack and the bind bar in a pressurized state.

Growing community of inventors

Osaka, Japan

Yuusuke Okii