US 12,230,813 B2
Top cap assembly, battery, and electrical device
Yukun Wu, Ningde (CN); Xiaoping Zhang, Ningde (CN); and Wenzhu Xu, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed on Mar. 18, 2024, as Appl. No. 18/608,314.
Application 18/608,314 is a continuation of application No. PCT/CN2023/072860, filed on Jan. 18, 2023.
Claims priority of application No. 202220730192.1 (CN), filed on Mar. 31, 2022.
Prior Publication US 2024/0222753 A1, Jul. 4, 2024
Int. Cl. H01M 50/169 (2021.01); H01M 50/103 (2021.01); H01M 50/15 (2021.01)
CPC H01M 50/169 (2021.01) [H01M 50/103 (2021.01); H01M 50/15 (2021.01)] 10 Claims
OG exemplary drawing
 
1. A top cap assembly, comprising:
a top cap plate, comprising an inner side and an outer side disposed opposite to each other along a thickness direction of the top cap plate and spaced apart from each other, the inner side has a first wall facing the outer side, the outer side has a second wall facing the inner side, a receptacle is formed between the first wall and the second wall, and the receptacle communicates with an outside space;
a mounting piece, disposed protrusively in the receptacle and comprising a fixed end and a free end disposed opposite to each other, wherein the fixed end is disposed on one of the first wall and the second wall, and the free end extends along the thickness direction of the top cap plate toward another one of the first wall and the second wall and is spaced apart from the other one of the first wall and the second wall to form a threading clearance between the free end and the other one of the first wall and the second wall; and
a protection film, wherein one end of the protection film extends into the receptacle through the threading clearance to be attached to the mounting piece.