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：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.

公开(公告)号：US20210119196A1

公开(公告)日：2021-04-22

申请号：US17112766

申请日：2020-12-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M4/04 ,  H01M10/42 ,  H01M4/66 ,  H01M4/62 ,  H01M4/136

Abstract: This application relates to an electrode plate, an electrochemical apparatus, a battery module, a battery pack, and a device. The electrode plate 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-sided thickness D2 of the conductive layer satisfies: 30 nm≤D2≤3 μm; and a conductive primer layer containing a conductive material and a binder is disposed between the current collector and the electrode active material layer, the binder in the conductive primer layer containing an acrylic based/acrylate based water-dispersible binder. The electrode plate of this application has good quality, and the electrochemical apparatus containing the electrode plate has a high energy density and a good electrical performance and long-term reliability.

公开(公告)号：US20200091485A1

公开(公告)日：2020-03-19

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: H01M2/14 ,  H01M10/05 ,  H01M2/06 ,  H01M10/42

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.