US 11,916,183 B2
Bipolar battery and power storage device
Daiki Terashima, Okazaki (JP); Satoshi Morioka, Okazaki (JP); Takuro Kikuchi, Nagoya (JP); Motoyoshi Okumura, Nagoya (JP); Kojiro Tamaru, Kariya (JP); Hiromi Ueda, Kariya (JP); Satoshi Hamaoka, Kariya (JP); and Masahiro Yamada, Kariya (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP); and KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Kariya (JP)
Appl. No. 17/417,908
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP); and KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Kariya (JP)
PCT Filed Dec. 24, 2019, PCT No. PCT/JP2019/050688
§ 371(c)(1), (2) Date Jun. 24, 2021,
PCT Pub. No. WO2020/138110, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 2018-240672 (JP), filed on Dec. 25, 2018.
Prior Publication US 2022/0093956 A1, Mar. 24, 2022
Int. Cl. H01M 10/04 (2006.01); H01M 10/613 (2014.01); H01M 10/6557 (2014.01); H01M 10/6563 (2014.01); H01M 10/30 (2006.01); H01M 50/184 (2021.01); H01M 50/186 (2021.01)
CPC H01M 10/0418 (2013.01) [H01M 10/30 (2013.01); H01M 10/613 (2015.04); H01M 10/6557 (2015.04); H01M 10/6563 (2015.04); H01M 50/184 (2021.01); H01M 50/186 (2021.01)] 3 Claims
OG exemplary drawing
 
1. A power storage device comprising:
a plurality of power storage units arranged with a conductive plate interposed therebetween in the vertical direction,
each of the plurality of power storage units having an electrode stack including a plurality of bipolar electrodes stacked with a separator interposed therebetween, and a sealing member provided around the electrode stack so as to seal a housing space formed between adjacent electrodes of the electrode stack,
at least one of the plurality of power storage units being provided with an overhang member on an outer peripheral surface of the sealing member,
the overhang member including an inclined portion that extends from the outer peripheral surface of the sealing member toward the outside of the power storage unit and inclines downward as it leaves away from the outer peripheral surface of the sealing member, and a top portion that is formed at a lower end of the inclined portion in a stacked direction,
wherein a portion of the sealing member that includes the overhang member does not contact with other sealing members of the plurality of power storage units.