US 12,155,089 B1
Battery cell, battery, and electrical device
Haibo Ke, Ningde (CN); Quankun Li, Ningde (CN); Jiawei Liu, Ningde (CN); Junqi Cao, Ningde (CN); Peng Wang, Ningde (CN); and Guoan Mao, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED, Ningde (CN)
Filed on Aug. 1, 2024, as Appl. No. 18/792,505.
Application 18/792,505 is a continuation of application No. PCT/CN2022/113927, filed on Aug. 22, 2022.
Int. Cl. H01M 50/477 (2021.01); H01M 50/209 (2021.01); H01M 50/474 (2021.01); B60R 16/033 (2006.01)
CPC H01M 50/477 (2021.01) [H01M 50/209 (2021.01); H01M 50/474 (2021.01); B60R 16/033 (2013.01); H01M 2220/20 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A battery cell, comprising:
a case, which is a hollow structure having a first opening end;
an end cover assembly for covering the first opening end;
an electrode assembly accommodated in the case; and
an insulating guard layer disposed between the electrode assembly and the case to wrap at least part of the electrode assembly, wherein the insulating guard layer comprises a main body portion and a protrusion structure, the main body portion has a second opening end facing the first opening end, the protrusion structure is connected with the second opening end and extends toward the end cover assembly, and the protrusion structure is used for connecting with the end cover assembly.