US 12,308,446 B2
Battery
Kazutoshi Kohira, Hyogo (JP); and Kazumichi Shimizu, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/296,402
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Nov. 21, 2019, PCT No. PCT/JP2019/045583
§ 371(c)(1), (2) Date May 24, 2021,
PCT Pub. No. WO2020/110888, PCT Pub. Date Jun. 4, 2020.
Claims priority of application No. 2018-225884 (JP), filed on Nov. 30, 2018.
Prior Publication US 2022/0037723 A1, Feb. 3, 2022
Int. Cl. H01M 50/107 (2021.01); H01M 50/147 (2021.01); H01M 50/152 (2021.01); H01M 50/184 (2021.01); H01M 50/186 (2021.01); H01M 50/55 (2021.01); H01M 50/559 (2021.01)
CPC H01M 50/107 (2021.01) [H01M 50/147 (2021.01); H01M 50/152 (2021.01); H01M 50/184 (2021.01); H01M 50/186 (2021.01); H01M 50/55 (2021.01); H01M 50/559 (2021.01)] 8 Claims
OG exemplary drawing
 
1. A battery comprising:
a battery can including a cylinder and a bottom, the cylinder having a cylindrical shape and having an opening edge at a first end of the cylinder, the bottom closing a second end of the cylinder;
an electrode body housed in the cylinder; and
a sealing member fixed to the cylinder and sealing an opening surrounded by the opening edge, wherein
the sealing member has
a sealing plate electrically connected to a first electrode of the electrode body,
a cap having a through hole corresponding to the sealing plate, the cap being connected to the sealing plate in a state of being electrically insulated from the sealing plate, and
a first gasket that seals between the cylinder and the cap,
the first end and the second end of the cylinder face in an axial direction,
the cap has
a top plate having a ring shape, disposed radially outside of the cylinder along a peripheral edge of the sealing plate, and facing the cylinder,
a side wall that is erected in the axial direction from a peripheral edge of the top plate and extends and overlapping an outer surface of the cylinder, and
a rib that is erected in the axial direction from the top plate inside of the side wall and extends and overlapping an inner surface of the cylinder,
the first gasket is interposed between the rib and the cylinder in a state of being compressed in a radial direction of the cylinder, and
the battery can and the cap are electrically connected to a second electrode of the electrode body,
the battery further comprising:
a second gasket between the sealing plate and the cap, and
a holder holding the second gasket and erected in the axial direction from top plate inside of rib,
wherein the rib and the second gasket are provided apart from each other, and
the holder is provided apart from the rib.