US 12,431,566 B2
Hermetically sealed battery
Masao Ootsuka, Osaka (JP); Tadayoshi Takahashi, Osaka (JP); Futoshi Tanigawa, Osaka (JP); Naoaki Nishimura, Osaka (JP); and Kyosuke Okazaki, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/924,002
Filed by PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
PCT Filed Apr. 20, 2021, PCT No. PCT/JP2021/015960
§ 371(c)(1), (2) Date Nov. 8, 2022,
PCT Pub. No. WO2021/230014, PCT Pub. Date Nov. 18, 2021.
Claims priority of application No. 2020-086230 (JP), filed on May 15, 2020.
Prior Publication US 2023/0178831 A1, Jun. 8, 2023
Int. Cl. H01M 50/184 (2021.01); H01M 50/107 (2021.01); H01M 50/188 (2021.01); H01M 50/559 (2021.01)
CPC H01M 50/184 (2021.01) [H01M 50/107 (2021.01); H01M 50/188 (2021.01); H01M 50/559 (2021.01)] 4 Claims
OG exemplary drawing
 
1. A hermetically sealed battery comprising:
a battery can having a bottomed cylindrical shape and an opening;
an electrode body accommodated in the battery can;
a sealing plate covering the opening of the battery can;
a rivet disposed on the sealing plate and serving as a terminal;
an insulator insulates the sealing plate from the rivet; and
an internal lead electrically connected to the rivet, wherein
the insulator includes:
a sealing part sealing between the sealing plate and the rivet; and
a plate part closer to the electrode body than the sealing part, the plate part being extended in a radial direction of the electrode body,
the plate part has a cut-away portion recessed in a periphery of the plate part in the radial direction, and
the internal lead is partially disposed in the cut-away portion.