公开(公告)号：US20240339626A1

公开(公告)日：2024-10-10

申请号：US18743121

申请日：2024-06-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Kai Wu ,  Qingrui Xue ,  Wei Li ,  Zige Zhang ,  Yu Zhang ,  Zhengyuan Zhao

IPC: H01M4/70 ,  H01M4/02 ,  H01M4/13 ,  H01M4/66 ,  H01M50/46

CPC classification number: H01M4/70 ,  H01M4/13 ,  H01M4/661 ,  H01M4/667 ,  H01M50/46 ,  H01M2004/021

Abstract: Provided are an electrode assembly, a battery cell, a battery, and an electric device. The electrode assembly includes a negative electrode plate, a positive electrode plate, and a separator stacked along a first direction, the separator being used to separate the positive electrode plate and the negative electrode plate; where in a second direction, size of the negative electrode plate is larger than size of the positive electrode plate, and an orthographic projection of the positive electrode plate on a plane in which a surface of the negative electrode plate is located does not extend beyond the negative electrode plate, where the second direction is a width direction of the negative electrode plate, and the first direction is perpendicular to the second direction.

公开(公告)号：US20240339625A1

公开(公告)日：2024-10-10

申请号：US18743114

申请日：2024-06-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Qingrui Xue ,  Zige Zhang ,  Wei Li ,  Yu Zhang ,  Zhengyuan Zhao ,  Jinsong Zhang

IPC: H01M4/66 ,  H01M50/536

CPC classification number: H01M4/667 ,  H01M50/536

Abstract: Provided are a battery electrode plate, an electrode assembly, a battery cell, a battery, and an electric device, which can improve battery safety. Specifically, the battery electrode plate according to an embodiment of this application includes a current collector, an active substance layer, and a conductive structure, where the current collector includes a main body portion and a tab portion disposed in a first direction, where the main body portion is covered with the active substance layer and the tab portion is not covered with the active substance layer; a first region of the conductive structure is welded to a portion of the tab portion to form a welding mark zone; and the welding mark zone is at least partially covered with a protective layer.

公开(公告)号：US12051811B2

公开(公告)日：2024-07-30

申请号：US17112749

申请日：2020-12-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M4/66

CPC classification number: H01M4/662 ,  H01M4/663 ,  H01M4/664 ,  H01M4/667

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, a conductive primer layer including a conductive material and a bonding agent is further disposed between the current collector and the electrode active material layer. The bonding agent in the conductive primer layer includes a water-based bonding agent. The electrode plate in this application has good machinability. An electrochemical apparatus including the electrode plate has high energy density, good electrical performance, and long-term reliability.

公开(公告)号：US11923547B2

公开(公告)日：2024-03-05

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 ,  H01M4/13 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/667 ,  H01M4/13 ,  H01M4/622 ,  H01M4/625 ,  H01M4/626 ,  H01M4/661 ,  H01M4/662 ,  H01M4/668 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

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：US11631862B2

公开(公告)日：2023-04-18

申请号：US17543954

申请日：2021-12-07

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 ,  H01M50/536 ,  H01M4/02

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：US20220367985A1

公开(公告)日：2022-11-17

申请号：US17815216

申请日：2022-07-27

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Wenwei Chen ,  Xiaona Wang ,  Zige Zhang ,  Qingrui Xue ,  Chengdu Liang

IPC: H01M50/533 ,  H01M50/169 ,  H01M50/566 ,  H01M50/209 ,  H01M50/54 ,  H01M4/38

Abstract: Embodiments provide an electrode assembly, a battery cell, a battery, an electrical apparatus, and a manufacturing method and device. In those embodiments, the electrode assembly includes: an electrode plate, including a main portion and at least one protruding portion. The main portion includes a metal substrate and an active material layer coated on a surface of the metal substrate. The protruding portion is connected to the metal substrate. The metal substrate protrudes along a length direction of the electrode assembly. Along a thickness direction of the electrode assembly, a size of at least a part of the protruding portion is greater than a size of the metal substrate. The electrode assembly according to the Embodiments aims to solve a technical problem of severe heat emission of a tab.

公开(公告)号：US11444284B2

公开(公告)日：2022-09-13

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 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：US20220102698A1

公开(公告)日：2022-03-31

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 ,  H01M4/66 ,  H01M4/62 ,  H01M4/36 ,  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：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.