US 12,261,307 B2
End cover assembly, battery cell, battery and method and device for manufacturing battery cell
Qichang Cai, Ningde (CN); Huasheng Su, Ningde (CN); Xiaoping Zhang, Ningde (CN); Peng Wang, Ningde (CN); Quankun Li, Ningde (CN); and Chengyou Xing, 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 Dec. 22, 2021, as Appl. No. 17/558,734.
Application 17/558,734 is a continuation of application No. PCT/CN2021/085426, filed on Apr. 2, 2021.
Prior Publication US 2022/0320642 A1, Oct. 6, 2022
Int. Cl. H01M 50/147 (2021.01); H01M 10/0525 (2010.01); H01M 50/186 (2021.01); H01M 50/627 (2021.01)
CPC H01M 50/147 (2021.01) [H01M 10/0525 (2013.01); H01M 50/186 (2021.01); H01M 50/627 (2021.01); H01M 2220/20 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A battery cell, comprising:
a shell, provided with an opening;
an electrode assembly, accommodated in the shell, the electrode assembly comprising a tab; and
an end cover assembly, wherein the end cover assembly comprises:
an end cover, provided with an injection hole, the injection hole penetrating through the end cover in a thickness direction of the end cover;
an insulating part, configured to be arranged on a side of the end cover in the thickness direction, the insulating part being provided with a through hole and the through hole penetrating through the insulating part in the thickness direction;
a blocking part, provided with a liquid outlet, the blocking part being configured to change a flow direction of a fluid medium passing through the injection hole and the through hole, and the fluid medium after changing the flow direction entering inside of the battery cell through the liquid outlet; and
a separating part, configured to separate the tab from the end cover so as to prevent the tab from penetrating through the through hole to be in contact with the end cover;
wherein at least one side of the blocking part in a first direction is provided with the separating part, the first direction being perpendicular to the thickness direction, wherein in the first direction and along a direction of the separating part departing from the blocking part, a part of a wall of the through hole exceeds the separating part.