公开(公告)号：US20220140345A1

公开(公告)日：2022-05-05

申请号：US17577823

申请日：2022-01-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xing LI ,  Yaohui WANG ,  Haizu JIN

IPC: H01M4/58

Abstract: This application provides a positive electrode plate includes a positive electrode current collector, a first positive electrode membrane, and a second positive electrode membrane. The first positive electrode membrane includes a first positive electrode active material selected from one or more of phosphate materials LiFe1-x-yMnxMyPO4, where 0≤x≤1, 0≤y≤0.1, 0≤x+y≤1, M is selected from one or more of Cr, Mg, Ti, Al, Zn, W, Nb, or Zr. The second positive electrode membrane is arranged on the first positive electrode membrane and includes a second positive electrode active material, gram capacity of the second positive electrode active material is greater than gram capacity of the first positive electrode active material, the second positive electrode active material is different from the first positive electrode active material. Thickness D0 of the positive electrode current collector is less than or equal to thickness D1 of the first positive electrode membrane.

公开(公告)号：US20230246249A1

公开(公告)日：2023-08-03

申请号：US18296448

申请日：2023-04-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhipeng CHEN ,  Chao CHEN ,  Jinghua HUANG ,  Yaohui WANG ,  Qichao HUANG

IPC: H01M10/0587 ,  H01M10/04

CPC classification number: H01M10/0587 ,  H01M10/0409

Abstract: Provided are a battery winding method, a battery winding system, a battery and an electrical device. The battery winding method includes: winding; photographing a picture of a current winding layer; acquiring position data of a first point and of a second point according to the picture of the current winding layer, converting the position data of the first point to obtain the converted position data of a converted first point using a preset conversion matrix corresponding to the current winding layer based on the number of the current winding layers and calculating data of displacement between the first and second electrode plates based on the converted position data of the converted first point and the position data of the second point, and determining if the data of displacement is within a threshold value scope, if so, returning to wind a next winding layer, and if not, sending an alarm.

公开(公告)号：US20220320596A1

公开(公告)日：2022-10-06

申请号：US17843370

申请日：2022-06-17

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Siying HUANG ,  Jinlong LIU ,  Yaohui WANG ,  Qifan ZOU ,  Hengshan MAO ,  Liangbiao LIN ,  Yinxiang LIN

IPC: H01M10/0587

Abstract: Embodiments of this application provide an electrode assembly, a manufacturing method and manufacturing system of same, a battery cell, and a battery. The electrode assembly includes a negative electrode plate and a positive electrode plate, where the negative electrode plate and the positive electrode plate are wound in a winding direction to form a winding structure, and the winding structure includes a bending zone. The negative electrode plate and the positive electrode plate each include a plurality of bending portions located in the bending zone.

公开(公告)号：US20230036043A1

公开(公告)日：2023-02-02

申请号：US17964949

申请日：2022-10-13

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Siying HUANG ,  Yaohui WANG ,  Yinxiang LIN ,  Chao GUO ,  Peng JIN ,  Jinlong LIU

IPC: B05C9/06 ,  B05C11/02 ,  B05C11/10 ,  B05C21/00

Abstract: This application provides a coating system, and relates to the technical field of coating. The coating system may include a coating head, a feeding apparatus, and a valve. The coating head may be equipped with at least two dispensing cavities independent of each other. Each dispensing cavity may include a coating opening. The feeding apparatus may be connected to the dispensing cavity, and the feeding apparatus may be configured to feed a slurry to the dispensing cavity. The valve may be disposed between at least one dispensing cavity and the feeding apparatus, and configured to implement communication or disconnection between a corresponding dispensing cavity and the feeding apparatus.

公开(公告)号：US20210111410A1

公开(公告)日：2021-04-15

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 ,  H01M4/36 ,  H01M4/133 ,  H01M4/134 ,  H01M10/0525

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.

公开(公告)号：US20210083280A1

公开(公告)日：2021-03-18

申请号：US17044289

申请日：2019-10-15

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Mingkui GUO ,  Yaohui WANG ,  Yaping HUANG

IPC: H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/58 ,  H01M4/04 ,  H01M4/36 ,  H01M4/1391 ,  H01M4/131

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：US20200161623A1

公开(公告)日：2020-05-21

申请号：US16422869

申请日：2019-05-24

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yaohui WANG ,  Zhenhua LI ,  Xing LI

IPC: H01M2/34 ,  H01M4/66 ,  H01G11/68 ,  H01G11/18

Abstract: The present invention relates to a positive electrode plate and an electrochemical device. The positive electrode plate comprises a current collector, a positive active material layer and a safety coating disposed between the current collector and the positive active material layer, wherein the safety coating comprises a polymer matrix, a conductive material and an inorganic filler, wherein the polymer matrix comprises at least two types of polymer materials, and the first type of polymer material is fluorinated polyolefin and/or chlorinated polyolefin, and the solubility of the second type of polymer material in oil solvent is smaller than the solubility of the first type of polymer material; and the weight percentage of the first type of polymer material relative to the total weight of the polymer matrix, the conductive material and the inorganic filler is 17.5% or more. The positive electrode plate improves high temperature safety of electrochemical device.