公开(公告)号：US20230231134A1

公开(公告)日：2023-07-20

申请号：US18176265

申请日：2023-02-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xingyan YOU ,  Yiyang WU ,  Yuwen WANG ,  Chan LIAO ,  Baozhen WU

IPC: H01M4/587 ,  H01M4/38 ,  H01M4/133

CPC classification number: H01M4/587 ,  H01M4/386 ,  H01M4/133 ,  H01M2004/027

Abstract: A secondary battery includes a negative electrode plate including a negative electrode current collector, a first negative electrode material layer including a first negative electrode active material, and a second negative electrode material layer including a second negative electrode active material. The first negative electrode material layer is located between the negative electrode current collector and the second negative electrode material layer. The first negative electrode active material includes a first artificial graphite and a second artificial graphite. The first artificial graphite includes secondary particles. An amorphous carbon coating layer is provided on a surface of the first artificial graphite. The second artificial graphite includes primary particles. No amorphous carbon coating layer is provided on a surface of the second artificial graphite.

公开(公告)号：US20230402708A1

公开(公告)日：2023-12-14

申请号：US18447429

申请日：2023-08-10

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xingyan YOU ,  Wanqiu MENG ,  Baozhen WU ,  Yiyang WU ,  Yuwen WANG ,  Chan LIAO ,  Yonghuang YE

IPC: H01M50/30 ,  H01M10/04 ,  H01M50/609

CPC classification number: H01M50/394 ,  H01M10/049 ,  H01M50/609 ,  H01M10/0404

Abstract: A battery cell, a battery, an electric apparatus, and a manufacturing method and manufacturing device of battery cell are described. The battery cell includes: an electrode assembly; a casing having an accommodating cavity for accommodating the electrode assembly; an exhaust mechanism provided on the casing, the exhaust mechanism including a connecting component and a breathable component, and the breathable component is configured to discharge gas to outside of the casing when gas pressure inside the casing reaches a threshold; and an electrolyte, filled in the casing; where gas permeability A of the breathable component, conductivity S of the electrolyte, and gas containment space V satisfy 20 mm2*ms/cm*ml