公开(公告)号：US20220093933A1

公开(公告)日：2022-03-24

申请号：US17541300

申请日：2021-12-03

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M4/66 ,  H01M4/62 ,  H01M50/586 ,  H01M50/536 ,  H01M50/59 ,  H01M10/0525

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

公开(公告)号：US20210296654A1

公开(公告)日：2021-09-23

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

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 nm≤D2≤3 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.

公开(公告)号：US11101493B2

公开(公告)日：2021-08-24

申请号：US16268364

申请日：2019-02-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M10/04 ,  H01M2/02 ,  H01M50/116

Abstract: The present disclosure provides a secondary battery and an electrode plate thereof. The electrode member comprises an insulating substrate, a first conducting layer and an active material layer; the first conducting layer is provided on a surface of the insulating substrate, the active material layer is provided at a side of the first conducting layer away from the insulating substrate; the first conducting layer is provided with a stripe-shape groove extending in a height direction, the stripe-shape groove is used for releasing stress of the first conducting layer. The secondary battery comprises an electrode assembly, the electrode assembly comprises the electrode member.

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.