US 12,347,875 B2
Power storage device
Tetsuji Omura, Hyogo (JP)
Assigned to PANASONIC HOLDINGS CORPORATION, Osaka (JP)
Appl. No. 17/756,202
Filed by Panasonic Holdings Corporation, Osaka (JP)
PCT Filed Nov. 13, 2020, PCT No. PCT/JP2020/042415
§ 371(c)(1), (2) Date May 19, 2022,
PCT Pub. No. WO2021/106629, PCT Pub. Date Jun. 3, 2021.
Claims priority of application No. 2019-217427 (JP), filed on Nov. 29, 2019.
Prior Publication US 2022/0407154 A1, Dec. 22, 2022
Int. Cl. H01M 50/107 (2021.01); H01M 50/179 (2021.01); H01M 50/186 (2021.01); H01M 50/46 (2021.01); H01M 50/55 (2021.01); H01G 11/78 (2013.01); H01M 50/103 (2021.01); H01M 50/15 (2021.01); H01M 50/169 (2021.01); H01M 50/586 (2021.01); H01M 50/593 (2021.01)
CPC H01M 50/107 (2021.01) [H01M 50/179 (2021.01); H01M 50/186 (2021.01); H01M 50/46 (2021.01); H01M 50/55 (2021.01); H01G 11/78 (2013.01); H01M 50/103 (2021.01); H01M 50/15 (2021.01); H01M 50/169 (2021.01); H01M 50/586 (2021.01); H01M 50/593 (2021.01)] 18 Claims
OG exemplary drawing
 
1. A power storage device comprising:
an electrode assembly including a positive-electrode plate, a negative-electrode plate, and a separator which are stacked on one another, the separator being disposed between the positive-electrode plate and the negative-electrode plate;
an exterior can accommodating the electrode assembly and an electrolyte solution therein, the exterior can having a side wall with a tubular shape and an opening provided at one end of the side wall;
a sealing plate closing the opening of the exterior can; and
a holding member including one or more facing parts accommodated in the exterior can, each of one or more facing parts facing the side wall in a first direction and projecting toward the side wall,
wherein the sealing plate is welded to the exterior can at the opening such that the one or more facing parts expand the exterior can in the first direction.