Hitachi, Ltd.

Hitachi Automotive Systems, Ltd.

Takashi Kobune

Atsuhiko Urushihara

Toshiyuki Moriya

Chikara Kikkawa

Nayuta Yamachi

Hiroshi Hoshi

Tsunemi Aiba

Takeshi Haga

Toshikazu Maeshima

Hiroshi Iwata

Eisuke Sengoku

The purpose of the present invention is to provide a battery block capable of reducing stress acting on a connection portion due to thermal expansion/contraction or size error. A battery block () according to the present invention includes: a plurality of conductive members () arranged along side surfaces () of a holding case () and electrically connecting corresponding battery cells (); voltage detection boards () disposed opposite the side surfaces () of the holding case () and detecting the voltage of the battery cells (); and a plurality of voltage detection terminals () respectively electrically connected to a plurality of conductive members () disposed on the voltage detection boards (). In the voltage detection terminals (), a securing portion () secured to the voltage detection boards () and a connection portion () connected to the conductive members () are disposed along an arranged direction, with a bend portion () which is elastically deformable in at least the arranged direction disposed between the securing portion () and the connection portion ().

Battery block and secondary battery module

Battery module

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Growing community of inventors

Hitachinaka, Japan

Takashi Kobune