公开(公告)号：US11777103B2

公开(公告)日：2023-10-03

申请号：US17132548

申请日：2020-12-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jing Li ,  Qingrui Xue ,  Zige Zhang ,  Wei Li ,  Xianwei Yang

IPC: H01M4/66 ,  H01M4/13 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/667 ,  H01M4/13 ,  H01M4/622 ,  H01M4/625 ,  H01M4/661 ,  H01M4/663 ,  H01M4/668 ,  H01M10/0525 ,  H01M2004/021

Abstract: This application relates to an electrode plate that includes a current collector and an electrode active material layer disposed on at least one surface of the current collector. The current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer. A single-side thickness D2 of the conductive layer satisfies 30 nm≤D2≤3 μm. The electrode active material layer includes an electrode active material, a binder, and a conductive agent unevenly distributed in a thickness direction of the electrode active material layer. A weight percentage of the conductive agent in an interior area of the electrode active material layer is higher than that in an exterior area of the electrode active material layer.

公开(公告)号：US11367932B2

公开(公告)日：2022-06-21

申请号：US16732180

申请日：2019-12-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qingrui Xue ,  Zige Zhang ,  Miao Jiang ,  Jing Li ,  Wei Li ,  Xianwei Yang

IPC: H01M6/12 ,  H01M50/531 ,  H01M10/058 ,  H01M50/172 ,  H01M50/543

Abstract: The present disclosure relates to the field of energy storage device, and particularly relates to an electrode member, an electrode assembly and a secondary battery. The electrode member comprises an electrode body and a conductive structure. The conducting layer comprises a first portion having an active material and a second portion extending from the first portion; the second portion comprises a main portion and a transition portion, the transition portion is provided between the main portion and the first portion, and a width of the transition portion is larger than a width of the main portion. The conductive structure is welded with the second portion and extends along a direction away from the first portion, and at least a part of a welding region formed by the second portion and the conductive structure is positioned at the transition portion. The present disclosure can avoid the overcurrent area being significantly reduced caused by the main portion, ensure that every position the electric current passing through has a sufficient overcurrent area, and improve the safety performance of the secondary battery.

公开(公告)号：US20220123443A1

公开(公告)日：2022-04-21

申请号：US17562928

申请日：2021-12-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Changliang Sheng ,  Zige Zhang ,  Qingrui Xue ,  Wei Li ,  Jing Li ,  Pengxiang Wang

IPC: H01M50/536 ,  H01M10/0587

Abstract: A secondary battery and an electrode member thereof, a battery module, and a related apparatus are provided. The electrode member includes a current collector, an active material layer, an adapting sheet, and an electrode lead. The current collector includes an insulating substrate, a first conductive layer, and a second conductive layer. The first conductive layer and the second conductive layer each include a coated region and an uncoated region, the coated region is coated with an active material layer, and the uncoated region is not coated with an active material layer, a size of the current collector in a length direction is larger than that in a width direction, and the uncoated region is located on a side of the coated region in a length direction. The adapting sheet includes a first conductive member and a second conductive member.

公开(公告)号：US20220102709A1

公开(公告)日：2022-03-31

申请号：US17547265

申请日：2021-12-10

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Jing Li ,  Yang Zhang ,  Qingrui Xue ,  Wei Li

IPC: H01M4/36 ,  H01M4/587 ,  H01M10/0525

Abstract: The present application discloses a negative electrode plate including a negative electrode active material layer including a first active material layer; wherein in a first cross section in a thickness direction of the negative electrode plate, the first active material has a size a in a direction parallel to the metal conductive layer, the first active material has a size b in the thickness direction, satisfying 0.8≤a/b≤20; in a second cross section in the thickness direction of the negative electrode plate, the first active material has a size c in the direction parallel to the metal conductive layer, the first active material has a size din the thickness direction, satisfying 0.8≤c/d≤20; and the first cross section is parallel to a first direction, the second cross section is parallel to a second direction, and the first direction intersects the second direction.

公开(公告)号：US11239468B2

公开(公告)日：2022-02-01

申请号：US16375531

申请日：2019-04-04

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yaru Zhou ,  Qingrui Xue ,  Zige Zhang ,  Miao Jiang ,  Jing Li ,  Wei Li ,  Long Wang

IPC: H01M4/66 ,  H01M4/70 ,  H01M50/531 ,  H01M4/02

Abstract: A secondary battery and an electrode plate are provided. The electrode plate includes a current collector, an active material layer, a conductive structure, and a first protective layer. The current collector includes an insulating layer and a conductive layer disposed on the insulating layer. The conductive layer includes a main body portion and a protrusion portion. A surface of the main body portion facing away from the insulating layer is covered by the active material layer, while a surface of the protrusion portion facing away from the insulating layer is uncovered by the active material layer. The conductive structure is welded to the protrusion portion and thus a welded zone is formed. The first protective layer has elasticity, and is disposed on a side of the protrusion portion facing away from the insulating layer and is located between the welded zone and the active material layer.

公开(公告)号：US11024870B2

公开(公告)日：2021-06-01

申请号：US16267042

申请日：2019-02-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Wei Li ,  Zige Zhang ,  Chengdu Liang ,  Qingrui Xue ,  Jing Li ,  Pengxiang Wang

IPC: H01M10/04 ,  H01M4/02

Abstract: The present disclosure provides a secondary battery and an electrode plate thereof. The electrode plate comprises a current collector and an active material layer. The current collector comprises an insulating layer and a first conducting layer provided on a surface of the insulating layer; the first conducting layer has a main portion and a protruding portion connected with the main portion, the main portion is coated with the active material layer, the protruding portion is not coated with the active material layer. The electrode plate further comprises a second conducting layer, the second conducting layer comprises a first portion, the first portion is provided on a surface of the protruding portion away from the insulating layer. The secondary battery comprises an electrode assembly, the electrode assembly comprises the electrode plate.

公开(公告)号：US20200212449A1

公开(公告)日：2020-07-02

申请号：US16817278

申请日：2020-03-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zige Zhang ,  Wei Li ,  Qingrui Xue ,  Jing Li ,  Pengxiang Wang ,  Yang Zhang

IPC: H01M4/66 ,  H01M4/46 ,  H01M4/78

Abstract: The present disclosure provides a secondary battery and an electrode member thereof. The electrode member includes an insulating substrate, a conducting layer and an active material layer. The conducting layer is provided on a surface of the insulating substrate, and the conducting layer includes a main portion and a protruding portion extending from the main portion, the main portion is coated with the active material layer, the protruding portion is not coated with the active material layer. The active material layer includes a first portion and a second portion, the first portion is positioned at an end of the active material layer away from the protruding portion, the second portion is positioned at a side of the first portion close to the protruding portion, and a thickness of the first portion is less than a thickness of the second portion.

公开(公告)号：US20230395809A1

公开(公告)日：2023-12-07

申请号：US18231264

申请日：2023-08-08

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu LIANG ,  Jing Li ,  Wei Li ,  Qingrui Xue ,  Zige Zhang ,  Xianwel Yang

IPC: H01M4/66 ,  H01M4/13 ,  H01M4/62 ,  H01M10/0525

CPC classification number: H01M4/667 ,  H01M4/13 ,  H01M4/622 ,  H01M4/625 ,  H01M4/661 ,  H01M4/668 ,  H01M10/0525 ,  H01M2004/021

Abstract: The electrode plate includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, wherein the current collector includes a support layer and a conductive layer, the conductive layer has a single-sided thickness D2 satisfying: 30 nm≤D2≤3 μm; the electrode active material layer is divided into two regions, an inner region and an outer region in a thickness direction of the electrode active material layer, in which the weight percentage of the conductive agent in the inner region of the electrode active material layer is higher than the weight percentage content of the conductive agent in the outer region of the electrode active material layer, and the conductive agent in the inner region of the electrode active material layer includes at least one of a one-dimensional conductive material and a two-dimensional conductive material.

公开(公告)号：US11769883B2

公开(公告)日：2023-09-26

申请号：US15734469

申请日：2019-11-20

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu Liang ,  Jing Li ,  Wei Li ,  Qingrui Xue ,  Zige Zhang ,  Xianwei Yang

IPC: H01M4/66 ,  H01M4/13 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/667 ,  H01M4/13 ,  H01M4/622 ,  H01M4/625 ,  H01M4/661 ,  H01M4/668 ,  H01M10/0525 ,  H01M2004/021

Abstract: The electrode plate includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, wherein the current collector includes a support layer and a conductive layer, the conductive layer has a single-sided thickness D2 satisfying: 30 nm≤D2≤3 μm; the electrode active material layer is divided into two regions, an inner region and an outer region in a thickness direction of the electrode active material layer, in which the weight percentage of the conductive agent in the inner region of the electrode active material layer is higher than the weight percentage content of the conductive agent in the outer region of the electrode active material layer, and the conductive agent in the inner region of the electrode active material layer includes at least one of a one-dimensional conductive material and a two-dimensional conductive material.

公开(公告)号：US11749808B2

公开(公告)日：2023-09-05

申请号：US17335034

申请日：2021-05-31

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu Liang ,  Jing Li ,  Wei Li ,  Qingrui Xue ,  Zige Zhang ,  Yang Zhang

IPC: H01M4/66 ,  H01M4/62 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/667 ,  H01M4/625 ,  H01M4/662 ,  H01M4/505 ,  H01M4/525 ,  H01M4/623 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/10 ,  H01M2220/20

Abstract: The electrode plate according to the present application includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, wherein the current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer, the conductive layer has a single-sided thickness D2 satisfying: 30 nmD23 μm; and a conductive primer layer containing a first conductive material and a binder is provided between the current collector and the electrode active material layer, and the first conductive material in the conductive primer layer comprises at least one of a one-dimensional conductive material and a two-dimensional conductive material. The electrode plate of the present application has good workability, and the electrochemical device including the electrode plate has high energy density, good electrical performance and long-term reliability.