US 12,394,847 B2
Power storage device and vehicle-mounted structure thereof
Tetsuji Omura, Kobe (JP)
Assigned to PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo (JP)
Filed by PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo (JP)
Filed on Jul. 6, 2022, as Appl. No. 17/858,479.
Claims priority of application No. 2021-116421 (JP), filed on Jul. 14, 2021.
Prior Publication US 2023/0024125 A1, Jan. 26, 2023
Int. Cl. H01M 50/204 (2021.01); H01M 50/249 (2021.01); H01M 50/264 (2021.01)
CPC H01M 50/204 (2021.01) [H01M 50/249 (2021.01); H01M 50/264 (2021.01); H01M 2220/20 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A power storage device comprising:
a first case that accommodates a plurality of stacked first power storage cells; and
a second case that accommodates a plurality of stacked second power storage cells, wherein
the first case has a first reinforcement portion extending in a first direction,
the second case has a second reinforcement portion extending in a second direction intersecting the first direction,
the first case and the second case are provided to overlap with each other along a third direction intersecting the first direction and the second direction, and are joined to each other,
the first case has a first bottom surface, and the first reinforcement portion protrudes from the first bottom surface in the third direction,
the second case has a second bottom surface, and the second reinforcement portion protrudes from the second bottom surface in the third direction,
the plurality of stacked first power storage cells are provided on both sides of the first reinforcement portion in the second direction, and
the plurality of stacked second power storage cells are provided on both sides of the second reinforcement portion in the first direction.