US 12,230,771 B2
Power storage module and method of manufacturing same
Takashi Inamura, Himeji (JP); Yasumasa Kojima, Kasai (JP); and Takatoshi Kageyama, Kakogawa (JP)
Assigned to PRIME PLANET ENERGY & SOLUTIONS, INC., Tokyo (JP)
Filed by Prime Planet Energy & Solutions, Inc., Tokyo (JP)
Filed on Dec. 16, 2021, as Appl. No. 17/553,571.
Claims priority of application No. 2020-211178 (JP), filed on Dec. 21, 2020.
Prior Publication US 2022/0200065 A1, Jun. 23, 2022
Int. Cl. H01M 10/42 (2006.01); H01G 4/38 (2006.01); H05K 1/02 (2006.01)
CPC H01M 10/425 (2013.01) [H01G 4/38 (2013.01); H05K 1/028 (2013.01); H05K 2201/10015 (2013.01); H05K 2201/10037 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A power storage module, comprising:
a stack in which a plurality of power storage cells are stacked in a stacking direction;
a resin plate having a bottom surface portion and placed on the stack of the plurality of power storage cells;
a flexible printed circuit board placed on the bottom surface portion of the resin plate and having an electric circuit electrically connected to the plurality of power storage cells;
a connector for the electric circuit, the connector being fixed to the flexible printed circuit board; and
a substrate that supports the flexible printed circuit board and the connector, the substrate being fixed to the resin plate with the substrate being positioned in an extending direction of the bottom surface portion of the resin plate,
the resin plate has a first protrusion and a second protrusion each extending upward from the bottom surface portion, the first protrusion and the second protrusion being provided side by side in the stacking direction,
the flexible printed circuit board is provided with a first hole portion and a second hole portion through which the first protrusion and the second protrusion respectively extend,
the second protrusion and the second hole portion are provided at positions further away from the connector with respect to the first protrusion and the first hole portion respectively,
a hole diameter of the second hole portion along the stacking direction is larger than a hole diameter of the first hole portion along the stacking direction,
the first protrusion and the second protrusion have a substantially same diameter along the stacking direction,
the hole diameter of the first hole portion along the stacking direction is substantially larger than the diameter of the first protrusion along the stacking direction, and
the hole diameter of the second hole portion along the stacking direction is substantially larger than the diameter of the second protrusion along the stacking direction.