公开(公告)号：US11791466B2

公开(公告)日：2023-10-17

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 ,  H01M4/02

CPC classification number: H01M4/583 ,  H01M4/0404 ,  H01M4/622 ,  H01M10/0525 ,  H01M2004/027

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：US20230198109A1

公开(公告)日：2023-06-22

申请号：US18108660

申请日：2023-02-13

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haihe XIAO ,  Xiaowen ZHANG ,  Baiqing LI ,  Haizu Jin ,  Xigen ZHOU

IPC: H01M50/538 ,  H01M50/474 ,  H01M50/566 ,  H01M50/166 ,  H01M50/119 ,  H01M10/0587 ,  H01M50/548

CPC classification number: H01M50/538 ,  H01M50/474 ,  H01M50/566 ,  H01M50/166 ,  H01M50/119 ,  H01M10/0587 ,  H01M50/548

Abstract: A battery cell may include a housing, a first body structure, and a second body structure. The first body structure may be disposed in the housing. The first body structure may include a first positive electrode plate and a first negative electrode plate. A second body structure may be disposed in the housing. The second body structure may include a second positive electrode plate and a second negative electrode plate. The first body structure and the second body structure may be spaced out along a first direction. An end of the first positive electrode plate, which is oriented away from the second body structure along the first direction, may protrude beyond the first body structure and contacts a first inner surface of the housing, and the first negative electrode plate may be insulated from the first inner surface of the housing.

公开(公告)号：US11664555B2

公开(公告)日：2023-05-30

申请号：US17135918

申请日：2020-12-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: H01M50/271 ,  B60L50/64 ,  H01M50/249 ,  H01M50/296 ,  H01M50/342 ,  H01M50/204 ,  H01M50/593 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/15 ,  H01M10/04 ,  H01M50/586 ,  H01M50/55 ,  H01M50/276 ,  H01M50/224 ,  H01M50/209

CPC classification number: H01M50/271 ,  B60L50/64 ,  H01M10/0431 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/15 ,  H01M50/204 ,  H01M50/249 ,  H01M50/296 ,  H01M50/3425 ,  H01M50/55 ,  H01M50/586 ,  H01M50/593 ,  H01M50/209 ,  H01M50/224 ,  H01M50/276 ,  H01M2200/20 ,  H01M2220/20

Abstract: Disclosed are a secondary battery, a battery module and an electric vehicle. The secondary battery includes an electrode assembly, a housing and a top cover assembly. The housing has an accommodating chamber, the accommodating chamber having an opening, and the electrode assembly being accommodated in the accommodating chamber. The electrode assembly includes a plurality of electrode units, the plurality of electrode units being stacked in an axial direction of the accommodating chamber. The top cover assembly includes a top cover plate, a first electrode terminal and a second electrode terminal, the top cover plate being connected to the housing and located on a side of the electrode assembly in the axial direction, and the first electrode terminal and the second electrode terminal both protruding from the top cover plate and being electrically connected to the electrode assembly.

公开(公告)号：US20230016626A1

公开(公告)日：2023-01-19

申请号：US17942031

申请日：2022-09-09

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Cong CHENG ,  Haiyi Hong ,  Yuanyuan Lan ,  Jianrui Yang ,  Na Liu ,  Haizu Jin

IPC: H01M50/446 ,  H01M50/403 ,  H01M50/494 ,  H01M50/491

Abstract: The present application relates to a separator in the electrochemical field and a preparation method therefor, and to a secondary battery comprising the separator, a device comprising the secondary battery. The separator of the present application is prepared by a simple process and has excellent heat resistance performance. Moreover, the secondary batteries and devices comprising the separator of the present application have good safety performance and cycling performance.

公开(公告)号：US20220367968A1

公开(公告)日：2022-11-17

申请号：US17815570

申请日：2022-07-28

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Haizu Jin ,  Hu Xu ,  Yuqun Zeng ,  Chengdu Liang

IPC: H01M50/342 ,  H01M50/213 ,  H01M50/249 ,  H01M50/375

Abstract: A battery, an electrical device, and a method and device for manufacturing a battery are provides. In some embodiments, the battery includes: a plurality of battery cells arranged along a first direction. Each battery cell includes an end cap and a housing, an opening is made at an end of the housing along the first direction, the end cap is configured to close the opening, and the housing includes a first wall extending along the first direction. A pressure relief region is provided on the first wall. The pressure relief region is configured to release pressure along a second direction when an internal pressure or temperature of the battery cell reaches a threshold. The second direction intersects the first direction. In this way, various embodiments improve safety of the battery.

公开(公告)号：US11349126B2

公开(公告)日：2022-05-31

申请号：US16762507

申请日：2018-11-07

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiaowen Zhang ,  Haizu Jin ,  Xing Li

IPC: H01M4/66 ,  C09D127/08 ,  C09D127/16 ,  H01M4/13 ,  H01M4/62 ,  H01M10/0525 ,  H01M10/42 ,  H01M4/02

Abstract: The present application relates to a positive electrode plate, an electrochemical device and a safety coating. The positive electrode plate comprises a current collector, a positive active material layer and a safety coating disposed between the current collector and the positive active material layer, the safety coating comprising a fluorinated polyolefin and/or chlorinated polyolefin polymer matrix, a conductive material and an inorganic filler. The positive electrode plate can quickly disconnect circuit when the electrochemical device (such as a capacitor, primary battery, or secondary battery, and the like) is in a high temperature condition or an internal short circuit occurs, thereby improving high temperature safety performance of the electrochemical device.

公开(公告)号：US11233297B2

公开(公告)日：2022-01-25

申请号：US16455751

申请日：2019-06-28

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M50/54 ,  H01M10/0585 ,  H01M50/15 ,  H01M50/20

Abstract: The disclosure relates to a secondary battery and a battery module. The secondary battery comprises a casing, which includes a receiving hole having an opening; a top cover assembly, which includes a top cover plate connected to the casing to close the opening; an electrode assembly disposed within the receiving hole, the electrode assembly has an dimension of 0.01 mm to 1000 mm in an axial direction of the receiving hole, the electrode assembly includes two end faces opposed to each other in a first direction perpendicular to the axial direction and tabs extending from the end faces, the electrode assembly includes two or more electrode units laminated in the axial direction, and in a second direction perpendicular to the axial direction and the first direction, the dimension of the tab is smaller than the dimension of the end face; and a current collecting member electrically connected to the tab.

公开(公告)号：US11177528B2

公开(公告)日：2021-11-16

申请号：US16691215

申请日：2019-11-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haizu Jin ,  Fei Hu ,  Zhenhua Li ,  Dongyang Shi ,  Rui Yang ,  Yuqun Zeng ,  Yongshou Lin

IPC: H01M50/20 ,  H01M50/15 ,  H01M50/147 ,  H01M10/0525 ,  H01M10/0565

Abstract: The present disclosure provides a battery module and a battery pack. The battery pack comprises a box and a battery module, the battery module is accommodated in the box. The battery module comprises batteries sequentially arranged in a first direction. The battery comprises an electrode assembly, a case and a cap assembly, the electrode assembly is received in the case, and the cap assembly is connected with the case. The case comprises two first side walls, and the two first side walls are respectively positioned at two sides of the electrode assembly in the first direction. The first side walls of two adjacent batteries face each other. An area of the first side wall is defined as S1, a distance between the electrode assemblies of two adjacent batteries in the first direction is defined as D, S1 and D satisfying a relationship: 1.2×10−5 mm−1≤D/S1≤500×10−5 mm−1.

公开(公告)号：US11139528B2

公开(公告)日：2021-10-05

申请号：US17137172

申请日：2020-12-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Haizu Jin ,  Fei Hu ,  Zhenhua Li ,  Dongyang Shi ,  Rui Yang ,  Yuqun Zeng ,  Yongshou Lin

IPC: H01M50/20 ,  H01M50/15 ,  H01M50/147 ,  H01M10/0525 ,  H01M10/0565

Abstract: The present disclosure provides a battery module and a battery pack. The battery pack comprises a box and a battery module, the battery module is accommodated in the box. The battery module comprises batteries sequentially arranged in a first direction. The battery comprises an electrode assembly, a case and a cap assembly, the electrode assembly is received in the case, and the cap assembly is connected with the case. The case comprises two first side walls, and the two first side walls are respectively positioned at two sides of the electrode assembly in the first direction. The first side walls of two adjacent batteries face each other. An area of the first side wall is defined as S1, a distance between the electrode assemblies of two adjacent batteries in the first direction is defined as D, S1 and D satisfying a relationship: 1.2×10−5 mm−1≤D/S1≤500×10−5 mm−1.

公开(公告)号：US11133549B2

公开(公告)日：2021-09-28

申请号：US16691234

申请日：2019-11-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Dongyang Shi ,  Haizu Jin ,  Rui Yang ,  Fei Hu ,  Peng Wang ,  Yuqun Zeng ,  Yongshou Lin

IPC: H01M6/46 ,  H01M50/183 ,  H01M50/10 ,  H01M50/20

Abstract: The present disclosure provides a battery pack and a vehicle. The battery pack comprises a battery module, a box assembly and a first adhesive member. The battery module comprises first batteries arranged sequentially in a horizontal direction. The first battery comprises an electrode assembly and a case, and the electrode assembly is received in the case. The electrode assembly comprises a first electrode plate, a second electrode plate and a separator. The box assembly has a connection portion, and the connection portion is positioned at a side of the battery module in the vertical direction. An outer surface of the case comprises a first surface, and the first surface is connected with the connection portion via the first adhesive member. An area A of the first surface and an elastic modulus B of the first adhesive member satisfy a relationship: 0.02 cm2/MPa≤A/B≤9 cm2/MPa.