公开(公告)号：US12132217B2

公开(公告)日：2024-10-29

申请号：US17970603

申请日：2022-10-21

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu Liang ,  Quanguo Li ,  Yonghuang Ye ,  Qian Liu ,  Haizu Jin ,  Wei Li

IPC: H01M50/204 ,  H01M4/02 ,  H01M4/525 ,  H01M4/58 ,  H01M4/583 ,  H01M10/04

CPC classification number: H01M50/204 ,  H01M4/525 ,  H01M4/5825 ,  H01M4/583 ,  H01M10/0404 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2004/028

Abstract: The present application discloses a battery module, a battery pack, an apparatus, and a method and device for manufacturing a battery module. The battery module includes n first-type battery cells and m second-type battery cells, n≥1, m≥1, and the n first-type battery cells and them second-type battery cells are arranged and satisfy: VED1>VED2, ΔF1>ΔF2, and (ΔF1×n+ΔF2×m)/(n+m)≤0.8×ΔF1, where VED1, VED2, ΔF1 and ΔF2 are respectively defined in the description.

公开(公告)号：US20240250247A1

公开(公告)日：2024-07-25

申请号：US18531739

申请日：2023-12-07

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/587 ,  H01M10/0525

CPC classification number: H01M4/366 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2220/20

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 particle size a in a direction parallel to the metal conductive layer, the first active material has a particle size b in the thickness direction, satisfying 0.8≤a/b≤20; in a second cross section in the thickness direction, the first active material has a particle size c in the direction parallel to the metal conductive layer, the first active material has a particle size d in 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：US20240243444A1

公开(公告)日：2024-07-18

申请号：US18623015

申请日：2024-03-31

Applicant: Jiangsu Contemporary Amperex Technology Limited ,  CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M50/533 ,  H01M50/103 ,  H01M50/15 ,  H01M50/474 ,  H01M50/536

CPC classification number: H01M50/533 ,  H01M50/103 ,  H01M50/15 ,  H01M50/474 ,  H01M50/536

Abstract: Provided are an electrode plate, an electrode assembly, a battery cell, a battery, and an electric device. The electrode plate includes: a current collector, where the current collector includes an insulation layer and a conductive layer disposed on an outer surface of the insulation layer, and the conductive layer includes a body portion and a tab portion arranged along a first direction; and a conductive structure, where the conductive structure is welded to the tab portion to form a welded zone, the conductive structure extends in a direction leaving the body portion, and in a second direction, a size of an end of the welded zone near the body portion is greater than a preset threshold, where the preset threshold is inversely related to thickness of the tab portion in a third direction, and the second direction is perpendicular to the first direction and parallel to the tab portion.

公开(公告)号：US11923537B2

公开(公告)日：2024-03-05

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 ,  H01M4/02

CPC classification number: H01M4/366 ,  H01M4/587 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/027 ,  H01M2220/20

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 d in 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：US11804590B2

公开(公告)日：2023-10-31

申请号：US18046157

申请日：2022-10-13

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M4/36 ,  H01M4/04 ,  H01M4/131 ,  H01M4/136 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/525 ,  H01M4/58 ,  H01M10/0525 ,  H01M10/058 ,  H01M4/02

CPC classification number: H01M4/364 ,  H01M4/0404 ,  H01M4/131 ,  H01M4/136 ,  H01M4/1391 ,  H01M4/1397 ,  H01M4/525 ,  H01M4/5825 ,  H01M10/058 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028 ,  H01M2220/20

Abstract: A secondary battery and a preparation method thereof, and a battery module, battery pack, and apparatus containing a secondary battery are provided. In some embodiments, the secondary battery includes a positive electrode plate, a negative electrode plate, and an electrolyte, where the positive electrode plate includes a positive electrode current collector and a positive electrode film layer that is disposed on at least one surface of the positive electrode current collector and that includes a positive electrode active material, and the negative electrode plate includes a negative electrode current collector and a negative electrode film layer that is disposed on at least one surface of the negative electrode current collector and that includes a negative electrode active material; and the positive electrode active material includes a first material and a second material.

公开(公告)号：US11271273B2

公开(公告)日：2022-03-08

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 application 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 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：US11133508B2

公开(公告)日：2021-09-28

申请号：US16374155

申请日：2019-04-03

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yaru Zhou ,  Qingrui Xue ,  Zige Zhang ,  Miao Jiang ,  Jing Li ,  Wei Li ,  Long Wang

IPC: H01M4/64 ,  H01M4/04 ,  H01M10/04

Abstract: The present disclosure provides a secondary battery and an electrode plate. The electrode plate includes a current collector, an active material layer, and a first protective layer. The current collector includes an insulating layer and a conductive layer disposed on the insulating layer. The conductive layer has a main body portion covered by the active material layer and a protrusion portion uncovered by the active material layer. The first protective layer is disposed on a side of the protrusion portion facing away from the insulating layer. The electrode plate further includes a conductive structure, which has a connecting portion fixed on the main body portion, and a first extending portion exceeding an end of the protrusion portion away from the main body portion. The first protective layer is disposed on a side of the connecting portion close to the active material layer along a height direction.

公开(公告)号：US20210119221A1

公开(公告)日：2021-04-22

申请号：US17134014

申请日：2020-12-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

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

Abstract: This application relates to the battery field, and specifically, to an electrode plate, an electrochemical apparatus, a battery module, a battery pack, and a device. The 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-side thickness D2 of the conductive layer satisfies 30 nm≤D2≤3 μm, and 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 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：US20200235368A1

公开(公告)日：2020-07-23

申请号：US16732180

申请日：2019-12-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M2/26 ,  H01M2/06 ,  H01M2/30 ,  H01M10/058

Abstract: The present disclosure relates to the field of energy storage device, and particularly relates to an electrode member, an electrode assembly and a secondary battery. The electrode member comprises an electrode body and a conductive structure. The conducting layer comprises 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 is provided between the main portion and the first portion, and a width of the transition portion is 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, and at least a part of a welding region formed by the second portion and the conductive structure is positioned at the transition portion. The present disclosure can avoid the overcurrent area being significantly reduced caused by the main portion, ensure that every position the electric current passing through has a sufficient overcurrent area, and improve the safety performance of the secondary battery.

公开(公告)号：US10439220B2

公开(公告)日：2019-10-08

申请号：US15686067

申请日：2017-08-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yunjian Ma ,  Wei Li ,  Haizu Jin ,  Yikuang Jin

IPC: H01M4/583 ,  H01M10/0525 ,  H01M4/04 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/36 ,  H01M4/587 ,  H01M4/62 ,  H01M4/02

Abstract: The present application relates to a negative electrode material for a secondary battery. The negative electrode material includes an expanded graphite and an organic phase change material intercalated into the expanded graphite. The present application further relates to a method for preparing the negative electrode material and a secondary battery using the negative electrode material. Since the organic phase change material is intercalated into the expanded graphite, when an internal temperature of the secondary battery increases, the organic phase change material absorbs heat by phase change, which can improve the heat storage and energy storage capacity and the safety performance of the secondary battery. In addition, since the organic phase change material has certain viscosity and flexibility, the adhesion performance of the negative electrode material on the current collector can also be improved.