US 12,444,798 B2
Power storage device
Naoto Morisaku, Kariya (JP); Hirokazu Kotake, Kariya (JP); Satoshi Morioka, Okazaki (JP); Motoyoshi Okumura, Nagoya (JP); and Takuro Kikuchi, Tokyo (JP)
Assigned to KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Kariya (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Appl. No. 17/612,787
Filed by KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Kariya (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
PCT Filed May 25, 2020, PCT No. PCT/JP2020/020589
§ 371(c)(1), (2) Date Nov. 19, 2021,
PCT Pub. No. WO2020/241585, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 2019-103057 (JP), filed on May 31, 2019.
Prior Publication US 2022/0247023 A1, Aug. 4, 2022
Int. Cl. H01M 50/209 (2021.01); H01M 10/04 (2006.01); H01M 50/264 (2021.01); H01M 10/613 (2014.01); H01M 10/6557 (2014.01); H01M 10/6561 (2014.01)
CPC H01M 50/209 (2021.01) [H01M 10/0418 (2013.01); H01M 10/0481 (2013.01); H01M 50/264 (2021.01); H01M 10/613 (2015.04); H01M 10/6557 (2015.04); H01M 10/6561 (2015.04); H01M 2220/20 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A power storage device comprising:
a module laminate including a plurality of power storage modules arranged in one direction;
a pair of end plates respectively arranged at both ends of the module laminate in the one direction;
a fastening member configured to fasten the pair of end plates together around the module laminate and apply a predetermined restraint load to the module laminate via the end plates; and
a collar member including a through-hole allowing the fastening member to be inserted therethrough, the collar member being sandwiched by the pair of end plates around the module laminate,
wherein the through-hole of the collar member is eccentric with respect to a center axis of the collar member so as to approach a side where the module laminate is arranged,
wherein the power storage module is a bipolar battery in which bipolar electrodes each having a positive electrode layer formed on one surface of a current collector and a negative electrode layer formed on another surface are laminated via a separator, and
wherein the module laminate is formed such that a plurality of the bipolar batteries are laminated via a conductive plate.