公开(公告)号：US20210234188A1

公开(公告)日：2021-07-29

申请号：US17233337

申请日：2021-04-16

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, an active material layer and a second conducting layer. The current collector comprises an insulating layer and a first conducting layer disposed on at least one surface of the insulating layer; and the active material layer is disposed on a main portion of the first conducting layer. The first conducting layer further includes a protruding portion not coated with the active material layer. The second conducting layer comprises a first portion disposed on a surface of the protruding portion of the first conducting layer opposite to the insulating layer. The secondary battery comprises an electrode assembly, the electrode assembly comprises the electrode plate.

公开(公告)号：US20200161631A1

公开(公告)日：2020-05-21

申请号：US16452534

申请日：2019-06-26

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qingrui XUE ,  Wei LI ,  Jing LI ,  Zige ZHANG ,  Xianwei YANG

IPC: H01M4/131 ,  H01M10/0525 ,  H01M10/42 ,  H01M10/058 ,  H01M4/505 ,  H01M4/525 ,  H01M4/587 ,  H01M4/62

Abstract: This application relates to a battery comprising a positive electrode plate, a separator, and a negative electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and at least two layers of positive active material coated on at least one surface of the positive electrode current collector, and wherein an underlying positive active material layer in contact with the positive electrode current collector comprises a first positive active material, a first polymer material and a first conductive material; and wherein an upper positive active material layer in contact with the underlying positive active material layer and away from the positive electrode current collector comprises a second positive active material, a second polymer material and a second conductive material, and the first polymer material comprises fluorinated polyolefin and/or chlorinated polyolefin polymer material. The battery has good safety and improved electrical properties.

公开(公告)号：US20200006776A1

公开(公告)日：2020-01-02

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 ,  H01M2/26

Abstract: The present disclosure relates to a secondary battery and an electrode plate. 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：US20210151772A1

公开(公告)日：2021-05-20

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 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/13

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：US20240088395A1

公开(公告)日：2024-03-14

申请号：US18518597

申请日：2023-11-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zige ZHANG ,  Wei LI ,  Jing LI ,  Qingrui XUE ,  Miao JIANG ,  Yuqian WEN ,  Long WANG

IPC: H01M4/64 ,  H01M10/04 ,  H01M50/533

CPC classification number: H01M4/64 ,  H01M10/04 ,  H01M50/533 ,  H01M2004/021

Abstract: An electrode plate includes an active material layer, a current collector including an insulating layer and first and second conductive layers sandwiching the insulating layer, and a conductive structure. The conductive structure includes a first conductive member including a first section arranged along a side of the first conductive layer and a second section extending from the first section and beyond the current collector in a direction away from the active material layer, and a second conductive member including a first connecting section connected to the second conductive layer, a bent section connected to the first connecting section and bent towards the first conductive member relative to the first connecting section, and a second connecting section bent backward relative to the bent section to be sandwiched between the first section and the first conductive layer.

公开(公告)号：US20220102732A1

公开(公告)日：2022-03-31

申请号：US17546076

申请日：2021-12-09

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Wei LI ,  Jing LI ,  Qingrui XUE ,  Zige ZHANG ,  Xianwei YANG ,  Yang ZHANG

IPC: H01M4/66 ,  H01M50/536 ,  H01M4/04 ,  H01M4/62

Abstract: This application relates to an electrode plate, an electrochemical apparatus, and an apparatus thereof. The electrode plate in this application comprises a current collector, an electrode active material layer disposed on at least one surface of the current collector, and an electrical connection member electrically connected to 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, and the support layer is a polymer material layer or a polymer composite material layer; and the electrode active material layer includes an electrode active material, a binder, and a conductive agent, and viewed in a width direction of a coated surface of the electrode plate, the electrode active material layer includes 2n+1 zones based on compacted density.

公开(公告)号：US20220037672A1

公开(公告)日：2022-02-03

申请号：US17501893

申请日：2021-10-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qingrui XUE ,  Jing LI ,  Wei LI ,  Zige ZHANG ,  Yang ZHANG ,  Xianwei YANG

IPC: H01M4/66

Abstract: This application relates to an electrode plate, including 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, where single-side thickness D2 of the conductive layer satisfies: 30 nm≤D2≤3 μm, the support layer includes a polymer material or a polymer composite material, and thickness D1 of the support layer satisfies: 1 μm≤D1≤20 μm. The electrode active material layer includes an electrode active material, a binder, and a conductive agent, where total thickness Dtotal of the electrode active material layer satisfies: 200≥Dtotal/D1≥1, and based on total weight of the electrode active material layer, the binder content in the electrode active material layer is not less than 1 wt %.

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：US20220037667A1

公开(公告)日：2022-02-03

申请号：US17501895

申请日：2021-10-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jing LI ,  Qingrui XUE ,  Wei LI ,  Zige ZHANG ,  Yang ZHANG ,  Xianwei YANG

IPC: H01M4/66 ,  H01M4/62

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 nmD23 μm, a thickness D1 of the support layer satisfies 1 μmD130 μm, and the support layer is made of a polymer material or a polymer composite material; and the electrode active material layer includes an electrode active material, a binder, and a conductive agent, and a total thickness Dtotal of the electrode active material layer is not greater than 170 μm.

公开(公告)号：US20210210763A1

公开(公告)日：2021-07-08

申请号：US17059503

申请日：2019-11-20

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Jing LI ,  Qingrui XUE ,  Zige ZHANG ,  Wei LI ,  Xianwei YANG

IPC: H01M4/62 ,  H01M10/0525

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, the conductive layer has a single-sided thickness D2 satisfying: 30 nm≤D2≤3 μm; and the conductive agent is unevenly distributed in the electrode active material layer 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 binder in the inner region of the electrode active material layer includes a water-dispersible binder.