公开(公告)号：US20230395870A1

公开(公告)日：2023-12-07

申请号：US18452888

申请日：2023-08-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huihui SHANGGUAN ,  Ziyu BAI ,  Daichun TANG ,  Xinxin DU ,  Yang HU

IPC: H01M10/0587 ,  H01M10/0525 ,  H01M50/46

CPC classification number: H01M10/0587 ,  H01M10/0525 ,  H01M50/46 ,  H01M2220/20

Abstract: This application relates to an electrode assembly, a battery cell, a battery, and an electric device, and pertains to the technical field of battery manufacture. An electrode assembly is provided. The electrode assembly is a wound electrode assembly and includes a first separator and a second separator. A difference between a number of winding turns of the first separator and a number of winding turns of the second separator is greater than or equal to 1. The electrode assembly in embodiments of this application can reduce or avoid lithium precipitation, to improve safety of the battery cell.

公开(公告)号：US20220311054A1

公开(公告)日：2022-09-29

申请号：US17543850

申请日：2021-12-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Ziyu BAI ,  Huihui SHANGGUAN ,  Xinxin DU ,  Yang HU ,  Daichun TANG

IPC: H01M10/0585 ,  H01M50/209 ,  H01M4/38 ,  H01M4/70

Abstract: The present application provides an electrode assembly, a batter cell, a battery, an electric apparatus, and a manufacturing method and device of the electrode assembly. A negative plate of the electrode assembly includes a plurality of first negative active material layers located in an abutting region, and a plurality of second negative active material layers located in a non-abutting region; a positive plate of the electrode assembly includes a plurality of first positive active material layers located in the abutting region, and a plurality of second positive active material layers located in the non-abutting region. An active material capacity per unit area of the first negative active material layer is greater than that of the second negative active material layer; and/or an active material capacity per unit area of the first positive active material layer is less than that of the second positive active material layer.