公开(公告)号：US20250015273A1

公开(公告)日：2025-01-09

申请号：US18824084

申请日：2024-09-04

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Wei ZHENG ,  Baozhen WU ,  Yuwen WANG ,  Xingyan YOU ,  Wenlong BAI

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/04 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/583 ,  H01M4/62 ,  H01M10/0525

Abstract: Disclosed are an electrode, a preparation method therefor, a battery, and a power consuming device. The electrode according to an embodiment of the present application comprises a current collector and active layers bonded to the current collector, wherein the active layers include a first active layer and a second active layer, the first active layer is bonded to the current collector, the second active layer is bonded to the surface of the first active layer that faces away from the current collector, and the second active layer has a porosity lager than that of the first active layer. The electrode has a high energy density and structural stability and an excellent cycling performance, resulting in a safe battery. The method for preparing an electrode as disclosed results in an electrode with a stable structure and electrochemical performance, and a high efficiency, while saving the production cost.

公开(公告)号：US20240154260A1

公开(公告)日：2024-05-09

申请号：US18411765

申请日：2024-01-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yiyang WU ,  Yonghuang YE ,  Yuwen WANG

IPC: H01M50/531 ,  H01M10/0525 ,  H01M10/0585 ,  H01M10/0587 ,  H01M50/112 ,  H01M50/148 ,  H01M50/55

CPC classification number: H01M50/531 ,  H01M10/0525 ,  H01M10/0585 ,  H01M10/0587 ,  H01M50/112 ,  H01M50/148 ,  H01M50/55 ,  H01M2220/20

Abstract: A cell includes a housing having an opening orientated towards a first direction, an end cover assembly configured to cover the opening and including an end cover body and two kinds of electrode terminals having opposite polarities, and at least two electrode assembly groups arranged in parallel in the housing in a second direction perpendicular to the first direction. Each electrode assembly group includes at least one electrode assembly each including a main part and two kinds of battery tabs having opposite polarities and led out from the main part. Two adjacent battery tabs in every two adjacent electrode assembly groups have a same polarity and are connected in common to an electrode terminal having the same polarity. Two battery tabs away from each other in every two adjacent electrode assembly groups have a same polarity and are connected to an electrode terminal having the same polarity.

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

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.