公开(公告)号：US20220115746A1

公开(公告)日：2022-04-14

申请号：US17557003

申请日：2021-12-20

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu LIANG ,  Xia Hu ,  Yonghuang Ye ,  Qian Liu ,  Quanguo Li ,  Wei Li

IPC: H01M50/51 ,  B60L50/64 ,  H01M50/249 ,  H01M50/258 ,  H01M10/0525 ,  H01M50/209 ,  H01M10/04

Abstract: The present application relates to a battery module and a method and equipment for manufacturing the same, a battery pack, and an apparatus. The battery module includes Type 1 battery cells and Type 2 battery cells connected in series; the Type 1 battery cells and the Type 2 battery cells satisfy the following criteria: 1.01×C1/C2≤N2≤1.25, and C1

公开(公告)号：US20210119303A1

公开(公告)日：2021-04-22

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 disclosure 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, the 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：US20230395809A1

公开(公告)日：2023-12-07

申请号：US18231264

申请日：2023-08-08

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu LIANG ,  Jing Li ,  Wei Li ,  Qingrui Xue ,  Zige Zhang ,  Xianwel Yang

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

CPC classification number: H01M4/667 ,  H01M4/13 ,  H01M4/622 ,  H01M4/625 ,  H01M4/661 ,  H01M4/668 ,  H01M10/0525 ,  H01M2004/021

Abstract: The electrode plate 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; the electrode active material layer is divided into two regions, an inner region and an outer region 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 conductive agent in the inner region of the electrode active material layer includes at least one of a one-dimensional conductive material and a two-dimensional conductive material.

公开(公告)号：US11769883B2

公开(公告)日：2023-09-26

申请号：US15734469

申请日：2019-11-20

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M4/66 ,  H01M4/13 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/667 ,  H01M4/13 ,  H01M4/622 ,  H01M4/625 ,  H01M4/661 ,  H01M4/668 ,  H01M10/0525 ,  H01M2004/021

Abstract: The electrode plate 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; the electrode active material layer is divided into two regions, an inner region and an outer region 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 conductive agent in the inner region of the electrode active material layer includes at least one of a one-dimensional conductive material and a two-dimensional conductive material.

公开(公告)号：US11749808B2

公开(公告)日：2023-09-05

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 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/667 ,  H01M4/625 ,  H01M4/662 ,  H01M4/505 ,  H01M4/525 ,  H01M4/623 ,  H01M10/0525 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2220/10 ,  H01M2220/20

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 nmD23 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：US11658329B2

公开(公告)日：2023-05-23

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 ,  H01M50/538 ,  H01M50/536 ,  H01M50/534

CPC classification number: H01M10/0436 ,  H01M4/02 ,  H01M50/534 ,  H01M50/536 ,  H01M50/538 ,  H01M2004/021

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：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：US20220123418A1

公开(公告)日：2022-04-21

申请号：US17565490

申请日：2021-12-30

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Huaichao Tang ,  Wei Li ,  Kai Wu ,  Chengdu Liang

IPC: H01M50/271 ,  H01M50/505 ,  H01M50/583 ,  H01M50/55

Abstract: The disclosure relates to an end cover assembly, a secondary battery, a battery pack and an electric device. An end cover assembly for a secondary battery includes: an end cover; a first terminal including a first connecting section and a second connecting section disposed along a radial direction; a second terminal including a third connecting section, a fuse section and a fourth connecting section sequentially connected along the radial direction; along an axial direction, orthographic projections of the first and third connecting sections at least partially overlap with each other, one of the first and third connecting sections is configured to connect with a busbar, the other is configured to connect with an electrode assembly, the fourth connecting section is configured to connect with the second connecting section; and an insulating component, at least a part of which is located between the first connecting section and the third connecting section.

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.