BATTERY PACK

WIPO Patent Application WO/2023/195547

A1

To obtain a small-sized busbar in which a portion overlapping a terminal part of a battery is flat while stress applied to a joining surface is mitigated.　A battery pack 1 according to the present invention has: a battery group in which a plurality of unit batteries 2 having positive-electrode terminals 2a and negative-electrode terminals 2b are stacked, with the positive-electrode terminal 2a of one unit battery 2A among mutually adjacent unit batteries 2 and the negative-electrode terminal 2b of the other unit battery 2B being adjacent in the stacking direction; and a busbar 10 for joining the positive-electrode terminal 2a of the one unit battery 2A and the negative-electrode terminal 2b of the other unit battery 2B. The busbar 10 has a positive-electrode plate 100 joined to the positive-electrode terminal 2a of the one unit battery 2A, and a negative-electrode plate 200 joined to the negative-electrode terminal 2b of the other unit battery 2B. At least one of the positive-electrode plate 100 and the negative-electrode plate 200 has a step-form shape bent in a stepwise manner, the joining being carried out via the step-form portion.

ODA MASANARI (JP)
KUBOTA OSAMU (JP)
URAKI KEIICHI (JP)
KAWASAKI TATSUHIKO (JP)
UNNO AKIRA (JP)
YAMANE TERUKI (JP)
YAMASHITA KOHEI (JP)
TAKAHASHI TOMOAKI (JP)

PCT/JP2023/015806

October 12, 2023

April 20, 2023

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VEHICLE ENERGY JAPAN INC (JP)

H01M50/503; H01M50/209; H01M50/516; H01M50/522; H01M50/526

WO2020183817A1

2020-09-17

JP2017152373A	2017-08-31
JP2011510433A	2011-03-31

POLAIRE I.P.C. (JP)

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