公开(公告)号：US11611064B2

公开(公告)日：2023-03-21

申请号：US17547324

申请日：2021-12-10

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M4/13 ,  H01M50/536 ,  H01M4/36 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0525

Abstract: This application relates to an electrode plate, an electrochemical apparatus, and an apparatus thereof. The electrode plate includes a current collector, an electrode active material layer provided on at least one surface of the current collector, and an electrical connection member electrically connected to the current collector. The electrode active material layer is provided at a zone referred to as a membrane zone on a main body portion of the current collector, the electrical connection member and the current collector are welded and connected at a welding zone referred to as an adapting welding zone at an edge of the current collector, and a transition zone is referred to as an extension zone, where the transition zone is of the current collector between the membrane zone and the adapting welding zone and coated with no electrode active material layer. The current collector is a composite current collector.

公开(公告)号：US11050116B2

公开(公告)日：2021-06-29

申请号：US16267073

申请日：2019-02-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M50/40 ,  H01M10/05 ,  H01M10/42 ,  H01M50/172

Abstract: The present disclosure provides a secondary battery, which comprises an electrode assembly, a case and a cap assembly. The electrode assembly comprises a first electrode member, a second electrode member and a separator. The case has an opening and receives the electrode assembly. The cap assembly comprises a cap plate and a first electrode terminal, the cap plate covers the opening of the case; the cap plate has an electrolyte injection hole. The first electrode member comprises a main portion, a first protruding portion and a second protruding portion, the first protruding portion is connected with an end of the main portion close to the cap plate, the second protruding portion connects the first protruding portion and the first electrode terminal. The first protruding portion extends to a lower side of the electrolyte injection hole, and a first end of the first protruding portion is beyond the second protruding portion.

公开(公告)号：US20210143441A1

公开(公告)日：2021-05-13

申请号：US17137077

申请日：2020-12-29

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：US20240250247A1

公开(公告)日：2024-07-25

申请号：US18531739

申请日：2023-12-07

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/587 ,  H01M10/0525

CPC classification number: H01M4/366 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2220/20

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 particle size a in a direction parallel to the metal conductive layer, the first active material has a particle size b in the thickness direction, satisfying 0.8≤a/b≤20; in a second cross section in the thickness direction, the first active material has a particle size c in the direction parallel to the metal conductive layer, the first active material has a particle size d in 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：US20240243444A1

公开(公告)日：2024-07-18

申请号：US18623015

申请日：2024-03-31

Applicant: Jiangsu Contemporary Amperex Technology Limited ,  CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Kai Wu ,  Zige Zhang ,  Qingrui Xue ,  Wei Li ,  Yu Zhang ,  Zhengyuan Zhao

IPC: H01M50/533 ,  H01M50/103 ,  H01M50/15 ,  H01M50/474 ,  H01M50/536

CPC classification number: H01M50/533 ,  H01M50/103 ,  H01M50/15 ,  H01M50/474 ,  H01M50/536

Abstract: Provided are an electrode plate, an electrode assembly, a battery cell, a battery, and an electric device. The electrode plate includes: a current collector, where the current collector includes an insulation layer and a conductive layer disposed on an outer surface of the insulation layer, and the conductive layer includes a body portion and a tab portion arranged along a first direction; and a conductive structure, where the conductive structure is welded to the tab portion to form a welded zone, the conductive structure extends in a direction leaving the body portion, and in a second direction, a size of an end of the welded zone near the body portion is greater than a preset threshold, where the preset threshold is inversely related to thickness of the tab portion in a third direction, and the second direction is perpendicular to the first direction and parallel to the tab portion.

公开(公告)号：US11923537B2

公开(公告)日：2024-03-05

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 ,  H01M4/02

CPC classification number: H01M4/366 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2220/20

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 d in 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：US11271273B2

公开(公告)日：2022-03-08

申请号：US17137090

申请日：2020-12-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

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

Abstract: The present application relates to an electrode member, an electrode assembly and a secondary battery. The electrode member comprises an electrode body and a conductive structure that has 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 provided between the main portion and the first portion, and a width of the transition portion 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. At least a part of a welding region formed by the second portion and the conductive structure is positioned at the transition portion, thereby avoiding the overcurrent area being significantly reduced by the main portion and ensuring that every position electric current passes through have a sufficient overcurrent area.

公开(公告)号：US20220037670A1

公开(公告)日：2022-02-03

申请号：US17501905

申请日：2021-10-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jing LI ,  Wei LI ,  Qingrui Xue ,  Zige ZHANG ,  Yang ZHANG ,  Pengxiang WANG ,  Yang LU

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

Abstract: This application relates to the battery field, and specifically, to a positive electrode plate, an electrochemical apparatus, and an apparatus. The positive electrode plate in this application includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, where the current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer. A single-sided thickness D2 of the conductive layer satisfies 30 nm≤D2≤3 μm. A thickness D1 of the support layer satisfies 1 μm≤D1≤30 μm. The support layer is made of a polymer material or a polymer composite material. The electrode active material layer includes electrode active materials, a binder, and a conductive agent.

公开(公告)号：US11133508B2

公开(公告)日：2021-09-28

申请号：US16374155

申请日：2019-04-03

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M4/64 ,  H01M4/04 ,  H01M10/04

Abstract: The present disclosure provides a secondary battery and an electrode plate. The electrode plate includes a current collector, an active material layer, and a first protective layer. The current collector includes an insulating layer and a conductive layer disposed on the insulating layer. The conductive layer has a main body portion covered by the active material layer and a protrusion portion uncovered by the active material layer. The first protective layer is disposed on a side of the protrusion portion facing away from the insulating layer. The electrode plate further includes a conductive structure, which has a connecting portion fixed on the main body portion, and a first extending portion exceeding an end of the protrusion portion away from the main body portion. The first protective layer is disposed on a side of the connecting portion close to the active material layer along a height direction.

公开(公告)号：US20210119221A1

公开(公告)日：2021-04-22

申请号：US17134014

申请日：2020-12-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

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

Abstract: This application relates to the battery field, and specifically, to an electrode plate, an electrochemical apparatus, a battery module, a battery pack, and a device. The electrode plate in this application includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, where 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, and a conductive primer layer including a conductive material and a bonding agent is further disposed between the current collector and the electrode active material layer. The electrode plate in this application has good machinability. An electrochemical apparatus including the electrode plate has high energy density, good electrical performance, and long-term reliability.