公开(公告)号：US20240097280A1

公开(公告)日：2024-03-21

申请号：US18522292

申请日：2023-11-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xingbu CHEN ,  Lili WU ,  Xin SUN ,  Huisen SU ,  Jianren WEI ,  Xuan LI

IPC: H01M50/477 ,  H01M50/48 ,  H01M50/531

CPC classification number: H01M50/477 ,  H01M50/48 ,  H01M50/531 ,  H01M2220/20

Abstract: A battery cell may include an electrode assembly and a buffer pad, where the electrode assembly may include a main body portion and a tab extending from the main body portion, the main body portion may include a first main body region and a second main body region, and the thickness of the first main body region along a first direction (T) may be smaller than the thickness of the second main body region along the first direction (T); and where the buffer pad may include a compressible first side wall, the first side wall may include a first buffer portion and a second buffer portion, the thickness of the first buffer portion along the first direction (T) may be greater than the thickness of the second buffer portion along the first direction, and the buffer pad may be provided on a side face of the main body portion.

公开(公告)号：US20230124703A1

公开(公告)日：2023-04-20

申请号：US17903054

申请日：2022-09-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jianren WEI ,  Xin SUN ,  Lili WU ,  Xuan LI ,  Huisen SU ,  Xingbu CHEN

IPC: H01M4/04 ,  H01M4/62 ,  H01M4/38

Abstract: Provided in the present application is a negative electrode plate, a secondary battery, a battery module, a battery pack and a power consuming device. The negative electrode plate may comprise a first coating, a second coating and a current collector, the current collector being on one side of the second coating, the first coating being on the other side of the second coating, the first coating and the second coating each comprising a silicon-based material, wherein a molar ratio of element O to element Si of the silicon-based material in the first coating may be 0.5 to 1.5, and a molar ratio of element O to element Si of the silicon-based material in the second coating may be less than or equal to 0.3.