US 12,255,341 B2
End cap assembly, battery cell, battery, battery cell manufacturing equipment and method
Yanyu Liu, Ningde (CN); Shoujun Huang, Ningde (CN); Xinxiang Chen, Ningde (CN); Yulian Zheng, Ningde (CN); and Peng Wang, 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. 2, 2021, as Appl. No. 17/540,386.
Application 17/540,386 is a continuation of application No. PCT/CN2020/142376, filed on Dec. 31, 2020.
Prior Publication US 2022/0209341 A1, Jun. 30, 2022
Int. Cl. H01M 50/15 (2021.01); H01M 50/103 (2021.01); H01M 50/209 (2021.01); H01M 50/528 (2021.01); H01M 50/543 (2021.01)
CPC H01M 50/15 (2021.01) [H01M 50/103 (2021.01); H01M 50/209 (2021.01); H01M 50/528 (2021.01); H01M 50/543 (2021.01); H01M 2220/20 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An end cap assembly for a battery cell, the battery cell comprising an electrode assembly, the end cap assembly comprising:
an end cap provided with an electrode lead-out hole which penetrates the end cap in a thickness direction of the end cap;
an electrode terminal being configured to be electrically connected to the electrode assembly;
a connector being configured to connect the end cap to fix the electrode terminal,
wherein the electrode terminal is provided opposite to the electrode lead-out hole, and a projection of the electrode terminal in the thickness direction does not overlap with a projection of the end cap in the thickness direction;
the end cap assembly further comprises a barrier; and
an accommodation gap is formed between an inner contour of the connector and an outer contour of the electrode terminal, and the barrier is at least partially disposed in the accommodation gap to block a contact between the electrode terminal and the connector;
the connector comprises an enclosure and a first restraint portion, wherein
the first restraint portion is disposed on an inner side wall of the enclosure and arranged along a circumferential direction of the enclosure, the electrode terminal is at least partially located in the enclosure, the first restraint portion and the electrode terminal form a first gap, the enclosure and the electrode terminal form a second gap connected with the first gap, the first gap and the second gap each forms a portion of the accommodation gap, a portion of the barrier is located in the first gap, and a portion of the barrier is located in the second gap;
the connector further comprises a second restraint portion arranged at intervals from the first restraint portion in a thickness direction of the end cap; and
the second restraint portion is disposed on the inner side wall of the enclosure and arranged in the circumferential direction of the enclosure, the second restraint portion and the electrode terminal form a third gap connected with the second gap, the third gap forms a portion of the accommodation gap, and a portion of the barrier is located in the third gap.