公开(公告)号：US11043677B2

公开(公告)日：2021-06-22

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 ,  H01M4/78 ,  H01M4/46

Abstract: The present application relates to 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：US11804604B2

公开(公告)日：2023-10-31

申请号：US17139124

申请日：2020-12-31

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M4/66 ,  H01M4/133 ,  H01M4/134 ,  H01M4/60 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/667 ,  H01M4/133 ,  H01M4/134 ,  H01M4/602 ,  H01M4/623 ,  H01M4/661 ,  H01M10/0525 ,  H01M2004/028

Abstract: The present application relates to the field of battery, in particular to a positive electrode piece, an electrochemical device and an apparatus. The positive electrode piece of the present application includes a current collector and an electrode active material layer arranged on at least one surface of the current collector, where the current collector includes a support layer and a conductive layer arranged on at least one surface of the support layer. The thickness D2 of one side of the conductive layer D2 satisfies 30 nm≤D2≤3 μm, the material of the conductive layer is aluminum or aluminum alloy, and the density of the conductive layer is 2.5 g/cm3 to 2.8 g/cm3, and a primer layer containing a conductive material and a binder is also arranged between the current collector and the electrode active material layer.

公开(公告)号：US12294090B2

公开(公告)日：2025-05-06

申请号：US17540263

申请日：2021-12-02

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M4/66 ,  H01M4/02 ,  H01M4/62

Abstract: This application relates to an electrode plate, an electrochemical apparatus, and an apparatus thereof. The electrode plate of this application 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 on a main body portion of the current collector in a zone referred to as a film zone, the electrical connection member and the current collector are welded and connected at an edge of the current collector, at a welding zone referred to as an transfer welding zone and a transition zone is referred to as an extension zone, where the transition zone is of the current collector between the film zone and the transfer welding zone, and is coated with no electrode active material layer.

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：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.