公开(公告)号：US20240047758A1

公开(公告)日：2024-02-08

申请号：US18488244

申请日：2023-10-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haihe XIAO ,  Xiaowen Zhang ,  Shuangjuan Peng ,  Yaping Huang ,  Baiqing Li ,  Haizu Jin ,  Xigen Zhou

IPC: H01M10/0583 ,  H01M50/533 ,  H01M50/46

CPC classification number: H01M10/0583 ,  H01M50/533 ,  H01M50/46 ,  H01M2220/20 ,  H02J7/0063

Abstract: A battery cell, a battery, a power consuming device, and a method for manufacturing a battery cell are provided. The battery cell includes: a shell; and an electrode assembly arranged in the shell and including a first electrode plate and a second electrode plate having an opposite polarity to the first electrode plate. The first electrode plate is repeatedly folded in a first direction such that the first electrode plate comprises a plurality of first stack sections connected and stacked in sequence, and the second electrode plate is folded once in a second direction such that the second electrode plate comprises two second stack sections connected to each other, the second direction being perpendicular or parallel to the first direction. The second stack sections and the first stack sections are stacked alternately in sequence. A bent portion of the second electrode plate is in contact with an inner wall of the shell.

公开(公告)号：US11984589B2

公开(公告)日：2024-05-14

申请号：US17044289

申请日：2019-10-15

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Mingkui Guo ,  Yaohui Wang ,  Yaping Huang

IPC: H01M4/50 ,  H01M4/04 ,  H01M4/13 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/36 ,  H01M4/505 ,  H01M4/52 ,  H01M4/525 ,  H01M4/58 ,  H01M10/05 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/505 ,  H01M4/0404 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/366 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2004/028

Abstract: This application provides a positive-electrode plate, including a current collector, and a first active substance layer and a second active substance layer that are sequentially disposed on a surface of the current collector. The first active substance layer includes a first positive-electrode active material, and the first positive-electrode active material includes at least one of a compound represented by Formula (I) Li1+x1Mna1M1-a1O2-y1Ay1 or a compound represented by Formula (II) Li1+x2Mna2N2-a2O4-y2By2. The second active substance layer includes a second positive-electrode active material having a pH value of from 10˜12. In this application, the active substance layer that includes high-pH positive-electrode active material is disposed outside the active substance layer that includes a lithium manganese-based positive-electrode active material, so as to make a layered electrode plate.

公开(公告)号：US11721811B2

公开(公告)日：2023-08-08

申请号：US17132506

申请日：2020-12-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yaping Huang ,  Mingkui Guo ,  Yaohui Wang ,  Yongshou Lin ,  Fenggang Zhao

IPC: H01M4/66 ,  H01M4/133 ,  H01M4/134 ,  H01M4/36 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/661 ,  H01M4/133 ,  H01M4/134 ,  H01M4/366 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027

Abstract: The present application relates to the electrochemical field, and in particular, to a negative electrode plate and a secondary battery including the electrode plate. The present application provides a negative electrode plate. The negative electrode plate includes a negative electrode current collector, a first negative electrode active substance layer disposed on at least one surface of the negative electrode current collector, and a second negative electrode active substance layer disposed on the first negative electrode active substance layer. The first negative electrode active substance layer includes a first negative electrode active substance, and the second negative electrode active substance layer includes a second negative electrode active substance. The first negative electrode active substance satisfies 1 GPa≤Young's modulus≤10 GPa, and the second negative electrode active substance satisfies 11 GPa≤Young's modulus≤30 GPa.