US 12,224,460 B2
Coin-shaped cell
Tadayoshi Takahashi, Kadoma (JP); Tomohiro Kiko, Kadoma (JP); Rina Nakamura, Ageo (JP); Shuichi Ohtsubo, Ageo (JP); and Kazuyuki Ohdate, Ageo (JP)
Assigned to PANASONIC HOLDINGS CORPORATION, Osaka (JP)
Appl. No. 17/641,893
Filed by PANASONIC CORPORATION, Kadoma (JP)
PCT Filed Sep. 4, 2020, PCT No. PCT/JP2020/033602
§ 371(c)(1), (2) Date Mar. 10, 2022,
PCT Pub. No. WO2021/059927, PCT Pub. Date Apr. 1, 2021.
Claims priority of application No. 2019-176424 (JP), filed on Sep. 27, 2019.
Prior Publication US 2022/0336934 A1, Oct. 20, 2022
Int. Cl. H01M 50/578 (2021.01); H01B 1/20 (2006.01); H01B 5/16 (2006.01); H01M 50/109 (2021.01); H01M 50/147 (2021.01); H01M 50/186 (2021.01); H01M 50/574 (2021.01)
CPC H01M 50/578 (2021.01) [H01M 50/109 (2021.01); H01M 50/147 (2021.01); H01M 50/186 (2021.01); H01M 50/574 (2021.01); H01B 1/20 (2013.01); H01B 5/16 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A coin-shaped cell, comprising:
a battery cell case having a bottom plate and a side portion rising from a rim of the bottom plate;
a sealing plate having a top plate and a rim portion extending from the top plate to the inside of the side portion;
a gasket compressed and interposed between the side portion and the rim portion;
power generation elements sealed by the battery cell case, the sealing plate, and the gasket; and
a pressure-sensitive conductive film disposed on an outer surface of at least one of the battery cell case and the sealing plate;
wherein the pressure-sensitive conductive film includes:
a first elastomer layer that holds conductive particles, and
a second elastomer layer which is disposed on at least one surface of the first elastomer layer and is in contact with at least a part of the conductive particles among the conductive particles held to the first elastomer layer, and wherein an average particle diameter of the conductive particles is equal to or larger than a thickness of an elastomer part of the first elastomer layer, and the conductive particles are disposed in a single layer in a planar direction of the first elastomer layer.