公开(公告)号：US11929509B2

公开(公告)日：2024-03-12

申请号：US17561748

申请日：2021-12-24

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu Liang ,  Yongsheng Guo ,  Tao Zhang ,  Chengyong Liu ,  Jun Yang

IPC: H01M4/62 ,  B22F1/145 ,  H01M4/38 ,  H01M10/0525

CPC classification number: H01M4/626 ,  B22F1/145 ,  H01M4/382 ,  H01M10/0525 ,  B22F2301/054 ,  H01M2220/20

Abstract: Disclosed are a lithium metal composite electrode material for a lithium metal battery, a preparation method for the same, and an electrode, battery, battery module, battery pack and apparatus comprising the same. The lithium metal composite electrode material comprises: lithium metal particles and a lithium-containing conductive layer serving as a supporting framework, the supporting framework being filled with the lithium metal particles; wherein the lithium-containing conductive layer comprises an inorganic lithium compound and a lithium alloy. The lithium metal composite electrode material can solve the problems that, when lithium metal is used as a negative electrode, the electrolyte is easily consumed, and lithium dendrites are easily produced, deposited and dissolved to change electrode thickness, which in turn affects the cycle stability, electrical performance and structural stability of the battery, so as to achieve the purpose of improving the structural stability and cycle stability of the lithium metal electrode.

公开(公告)号：US20230112421A1

公开(公告)日：2023-04-13

申请号：US17933855

申请日：2022-09-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Tao Zhang ,  Jianfu He ,  Qian Liu ,  Xueyang Sun ,  Yonghuang Ye

IPC: H01M4/13

Abstract: An electrode assembly, secondary battery, battery module, battery pack and electrical device are provided. In some embodiments, the electrode assembly comprises a positive electrode plate, a negative electrode plate and a separator disposed between the positive electrode plate and the negative electrode plate, the positive electrode plate satisfies 0

公开(公告)号：US20230344011A1

公开(公告)日：2023-10-26

申请号：US17935934

申请日：2022-09-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Tao Zhang ,  Jianfu He ,  Qian Liu ,  Yonghuang Ye

IPC: H01M50/148 ,  H01M50/204 ,  H01M10/0585

CPC classification number: H01M10/0585 ,  H01M50/148 ,  H01M50/204 ,  H01M50/102

Abstract: An electrode assembly, secondary battery, battery module, battery pack and electrical device are provided. In some embodiments, the electrode assembly comprises a positive electrode plate, a negative electrode plate and a separator disposed between the positive electrode plate and the negative electrode plate, the positive electrode plate satisfies CAP1=CAP2, in which CAP1 represents capacity of the first positive electrode film layer in Ah, CAP2 represents capacity of the second positive electrode film layer in Ah, and the electrode assembly satisfies |R4/R3-R2/R1|>0, in which R1 represents resistance of the first positive electrode film layer in Ω, R2 represents resistance of the second positive electrode film layer in Ω, R3 represents resistance of the first negative electrode film layer in mΩ and R4 represents resistance of the second negative film layer in mΩ. The present applicant may extend the cycle life of the secondary battery.

公开(公告)号：US11978879B1

公开(公告)日：2024-05-07

申请号：US18405420

申请日：2024-01-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yunfei Ma ,  Tao Zhang

IPC: H01M4/04

CPC classification number: H01M4/0404

Abstract: The present application provides a deviation-correcting method and apparatus for double-sided coating, and relates to the technical field of manufacturing of batteries. The method includes: acquiring a first distance between an edge of a coating area on a first surface of an electrode plate substrate and an edge of the electrode plate substrate from a deviation-correcting cross section; acquiring a second distance between an edge of a coating area on a second surface of the electrode plate substrate and the edge of the electrode plate substrate from the deviation-correcting cross section; determining edge deviation information of the coating areas; determining a first deviation-adjusting range; and in a case that a first intersection is present in the first deviation-correcting range, determining a deviation-correcting quantity of the electrode plate substrate. According to the method, the problem of the deviation of the coating areas in the coating process can be improved.

公开(公告)号：US20220115689A1

公开(公告)日：2022-04-14

申请号：US17556987

申请日：2021-12-20

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengyong Liu ,  Yongsheng Guo ,  Quan Fan ,  Tao Zhang ,  Chengdu Liang ,  Jun Yang

IPC: H01M10/0525 ,  H01M50/449 ,  H01M50/491 ,  H01M50/431

Abstract: The present application discloses a functionalized separator, a method for preparing the same, a lithium metal battery, and a device comprising the lithium metal battery. The functionalized separator comprises a porous substrate and a functional film layer provided on at least one side of the porous substrate, wherein the functional film layer comprises inorganic particles which are able to reversibly react with metal lithium to form a lithium alloy.

公开(公告)号：US11056683B2

公开(公告)日：2021-07-06

申请号：US16365118

申请日：2019-03-26

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Tiefeng Wu ,  Xiangqiang Huang ,  Tao Zhang ,  Nengwu Liao ,  Shaojun Qiu ,  Yuhuai Yang

IPC: H01M4/139 ,  H01L21/683 ,  H01L29/40 ,  H01M4/04

Abstract: An electrode plate processing device is provided. The electrode plate processing device includes: an electrode plate conveying mechanism configured to convey an electrode plate; a cutting mechanism disposed opposite to the electrode plate and configured to cut the electrode plate to form a tab; and a waste adsorption mechanism disposed downstream of the cutting mechanism along a conveying direction of the electrode plate. The waste adsorption mechanism includes an active driving roller, a driven support roller, and a conveyer belt that is coupled to the active driving roller and the driven support roller in a transmission way. The conveyer belt is driven by the active driving roller to rotate and configured to provide an adsorption force to a waste edge produced during the cutting of the electrode plate so as to adsorb the waste edge.

公开(公告)号：US10964933B2

公开(公告)日：2021-03-30

申请号：US16351766

申请日：2019-03-13

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shaojun Qiu ,  Nengwu Liao ,  Tao Zhang ,  Tiefeng Wu ,  Yuhuai Yang ,  Xiangqiang Huang

IPC: B23K26/16 ,  B23K26/38 ,  B23K26/142 ,  H01M4/04 ,  B23K101/16 ,  B23K101/38

Abstract: The present disclosure relates to an electrode plate processing device. The electrode plate processing device includes: an electrode plate cutting mechanism having a cutting position; and an electrode plate rolling mechanism, through which an electrode plate passes. The electrode plate rolling mechanism includes a first roller and a second roller. The first roller has a vacuum adsorption zone for adsorbing a waste edge of the electrode plate. The cutting position is provided in upstream of the vacuum adsorption zone along a conveying direction of the electrode plate processing device.