公开(公告)号：US11855297B2

公开(公告)日：2023-12-26

申请号：US18357389

申请日：2023-07-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jianfu He ,  Yonghuang Ye ,  Qian Liu ,  Jingxuan Sun ,  Xiaofu Xu ,  Xueyang Sun ,  Haizu Jin

IPC: H01M50/242

CPC classification number: H01M50/242 ,  H01M2220/20

Abstract: This application discloses a battery unit. The battery unit includes a housing, at least one cell, and a buffer. The at least one cell is accommodated in the housing, the buffer is disposed corresponding to a side wall of the cell, and the buffer is provided with an accommodating cavity. A periphery of the accommodating cavity includes at least one packaging structure, the packaging structure includes at least one level of packaging region with a predetermined length. When pressure in the accommodating cavity exceeds packaging strength of the packaging structure, the packaging region is opened to form a buffer space that communicates with the accommodating cavity, reducing influence caused by swelling of the cell.

公开(公告)号：US20230238540A1

公开(公告)日：2023-07-27

申请号：US18194658

申请日：2023-04-03

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Baiqing Li ,  Cheng Ji ,  Haizu Jin ,  Kai Wu

IPC: H01M4/62 ,  H01M50/538 ,  H01M50/103

CPC classification number: H01M4/628 ,  H01M50/538 ,  H01M50/103 ,  H01M2004/028

Abstract: An electrode assembly, a battery cell, a battery, and a method and device for manufacturing an electrode assembly are provided. In some embodiments, the electrode assembly includes a positive electrode plate and a negative electrode plate. The positive electrode plate and the negative electrode plate are wound or folded to form a bend region. The positive electrode plate includes a plurality of bend portions located in the bend region. Each bend portion includes a positive current collecting layer and a positive active material layer. The positive current collecting layer is coated with the positive active material layer on at least one surface in a thickness direction of the positive electrode plate. A barrier layer is disposed between the positive current collecting layer and the positive active material layer.

公开(公告)号：US20230216154A1

公开(公告)日：2023-07-06

申请号：US18184213

申请日：2023-03-15

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Denghua Lin ,  Jie Sun ,  Zhijun Guo ,  Yongbin Wu ,  Peng Wang ,  Haizu Jin

IPC: H01M50/533 ,  H01M50/103

CPC classification number: H01M50/533 ,  H01M50/103

Abstract: The present application relates to a current collecting member, a battery cell, a battery, and a power consuming device, which belong to the technical field of battery manufacturing. The present application provides a current collecting member for a battery cell. The current collecting member comprises: a terminal connecting portion for connection to an electrode terminal of the battery cell; a tab connecting portion for connection to a tab of the battery cell; and a transitional portion for connecting the terminal connecting portion and the tab connecting portion; wherein the transitional portion has a width greater than that of the tab connecting portion. The present application further provides a battery cell, a battery, and a power consuming device, which comprise the current collecting member. The battery cell, the battery and the power consuming device all have high safety performance and energy density due to the features of the current collecting member.

公开(公告)号：US20230135504A1

公开(公告)日：2023-05-04

申请号：US18050048

申请日：2022-10-27

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Jianghui Lin ,  Yanjie Zhao ,  Xing Li ,  Haizu Jin

IPC: H01M4/583 ,  H01M4/62 ,  H01M4/04 ,  H01M10/0525

Abstract: Graphite and a preparation method thereof, a secondary battery containing the modified graphite, a battery module, a battery pack, and an electrical device are provided. In particular, the modified graphite according to this disclosure includes a graphite moiety and a binder moiety covalently linked to the graphite moiety. The binder moiety possesses a structure expressed as Formula (IV'). The modified graphite according to this disclosure solves the problem that the binder floats up during the preparation of the negative electrode plate of the secondary battery.

公开(公告)号：US20230123414A1

公开(公告)日：2023-04-20

申请号：US18066286

申请日：2022-12-15

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Wenlin Zhou ,  Quankun Li ,  Peng Wang ,  Haizu Jin

IPC: H01M50/30 ,  H01M50/15 ,  H01M50/533 ,  H01M50/103

Abstract: A battery cell, a battery, an electric device, and a method and device for manufacturing battery cell are provided. The battery cell includes an electrode assembly; and a housing configured to accommodate the electrode assembly, where a first wall of the housing includes a first body and a mounting body connected to the first body, the mounting body is provided with a pressure relief mechanism, and the pressure relief mechanism is configured to be actuated when internal pressure or temperature of the battery cell reaches a threshold, so as to relieve the pressure; in a thickness direction of the first wall, at least part of the mounting body protrudes out of a surface of the first body facing the electrode assembly in a direction approaching the electrode assembly.

公开(公告)号：US20220393292A1

公开(公告)日：2022-12-08

申请号：US17889422

申请日：2022-08-17

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Qian LIU ,  Chengdu Liang ,  Xiaofu Xu ,  Quanguo Li ,  Yonghuang Ye ,  Haizu Jin

IPC: H01M50/267 ,  H01M50/204 ,  H01M50/51 ,  H01M4/36 ,  H01M4/525 ,  H01M4/505

Abstract: The present application relates to a battery module, comprising a first type of battery cells and a second type of battery cells electrically connected at least in series, wherein the first and second type of battery cells are battery cells of different chemical systems, the first type of battery cells comprises N first battery cells, the second type of battery cells comprises M second battery cells, and N and M are positive integers; a positive electrode plate of the second battery cell contains two or more positive electrode active materials, and when a dynamic SOC of the second battery cell is in a range from 90% to 98%, a change rate ΔOCV/ΔSOC in an OCV relative to the SOC of the second battery cell satisfies 3≤ΔOCV/ΔSOC≤9, in mV/% SOC, where SOC represents a charge state and OCV represents an open circuit voltage.

公开(公告)号：US20220344718A1

公开(公告)日：2022-10-27

申请号：US17857426

申请日：2022-07-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haizu Jin ,  Xiaona Wang ,  Xiaomei Liu ,  Jiang Liu ,  Wenwei Chen

IPC: H01M10/0583

Abstract: The present application discloses an electrode assembly including: a first electrode sheet including an insulating substrate, an electricity-conducting layer arranged on a surface of the insulating substrate, and an active material layer coating on a surface of the electricity-conducting layer, in which the first electrode sheet is bent to form a multi-layer structure and includes a plurality of bending segments and a plurality of first layer-stacking segments arranged to be stacked, and each of the bending segments is configured to connect two adjacent first layer-stacking segments; a second electrode sheet, in which a polarity of the second electrode sheet is opposite to a polarity of the first electrode sheet, and the second electrode sheet includes a plurality of second layer-stacking segments, the plurality of second layer-stacking segments and the plurality of first layer-stacking segments are alternately arranged in a layer-stacking direction of the first layer-stacking segments.

公开(公告)号：US11482738B2

公开(公告)日：2022-10-25

申请号：US16571810

申请日：2019-09-16

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Haizu Jin ,  Dongyang Shi ,  Fei Hu ,  Kaijie You ,  Xingdi Chen

IPC: H01M10/613 ,  H01M10/653 ,  H01M10/6555 ,  H01M10/04 ,  H01M10/6556

Abstract: A battery module including a first battery group, a second battery group, a cooling plate, and a plurality of busbars electrically connected with a plurality of battery cells. The cooling plate is placed between the first battery group and the second battery group, and the two surfaces of the cooling plate are respectively bonded onto the first battery group and the second battery group with thermally conductive adhesive, the first battery group and the second battery group can be mounted close to the cooling plate, thus increasing the heat dissipation area and improving the heat dissipation effect.

公开(公告)号：US11476526B2

公开(公告)日：2022-10-18

申请号：US16890457

申请日：2020-06-02

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Fei Hu ,  Dongyang Shi ,  Haizu Jin ,  Zhenhua Li ,  Ning Chen ,  Yuanbao Chen ,  Rui Yang

IPC: H01M50/147 ,  H01M10/04 ,  H01M50/531 ,  H01M50/543

Abstract: The present disclosure provides a secondary battery, a battery module and a vehicle. The secondary battery includes an electrode assembly, a case and a cap assembly. The case has an accommodating cavity, and the electrode assembly is accommodated in the accommodating cavity. The electrode assembly includes electrode units, and the electrode units are stacked in an axial direction of the accommodating cavity. The cap assembly includes a cap plate and an insulating member provided at an inner side of the cap plate, the cap plate is connected with the case, and the insulating member is positioned at a side of the electrode assembly in the axial direction. The insulating member is provided with a first surface at a side close to the electrode assembly, and the first surface is a flat surface.

公开(公告)号：US11362364B2

公开(公告)日：2022-06-14

申请号：US16433662

申请日：2019-06-06

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Haizu Jin ,  Xiaowen Zhang ,  Zhenhua Li

IPC: H01M10/04 ,  H01M4/525 ,  H01M10/0565

Abstract: This application relates to a battery comprising a positive electrode plate, a separator, and a negative electrode plate, wherein the positive electrode plate comprises a positive electrode current collector and at least two layers of positive active material coated on at least one surface of the positive electrode current collector, and wherein an underlying positive active material layer in contact with the positive electrode current collector comprises a first positive active material, a first polymer material and a first conductive material; and wherein an upper positive active material layer in contact with the underlying positive active material layer and away from the positive electrode current collector comprises a second positive active material, a second polymer material and a second conductive material, and the first polymer material comprises fluorinated polyolefin and/or chlorinated polyolefin polymer material. The battery has good safety and improved electrical properties.