公开(公告)号：US20230034272A1

公开(公告)日：2023-02-02

申请号：US17831362

申请日：2022-06-02

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Sitong LIU ,  Dongyang SHI ,  Shichao LI ,  Baiqing LI

IPC: H02J7/00

Abstract: This application provides a charging method and apparatus, a vehicle, and a computer-readable storage medium. The method includes: obtaining a current voltage of a target battery; determining a current power of the target battery based on the current voltage; determining a chargeable power of the target battery based on the current power; and obtaining a real-time voltage of the target battery where the target battery is charged with the chargeable power, where the real-time voltage is used for determining a charge cut-off voltage of the target battery in a next charging.

公开(公告)号：US20220236333A1

公开(公告)日：2022-07-28

申请号：US17717605

申请日：2022-04-11

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhi LIU ,  Dongyang SHI

IPC: G01R31/3835 ,  H02J7/00 ,  H01M10/48 ,  H01M10/42 ,  B60L50/60 ,  B60L3/00 ,  B60L58/12 ,  B60L53/62

Abstract: Embodiments of this application provide a method and a device for detecting abnormality of a lithium battery, a battery management system, and a battery system. The method includes: obtaining a SOC value of the lithium battery in a charge process, where the SOC value is a ratio of a remaining capacity of the battery to a nominal capacity of the battery; changing a value of a charge current at a time point corresponding to an arbitrary SOC value, and obtaining a response signal within a time period of maintaining the changed charge current; and determining, based on response signals at time points corresponding to a plurality of SOC values, whether the lithium battery is abnormal. The method can implement non-destructive detection of abnormality of a lithium-ion battery, simplify operation, and achieve relatively high accuracy.

公开(公告)号：US20210320383A1

公开(公告)日：2021-10-14

申请号：US17356565

申请日：2021-06-24

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yuanbao CHEN ,  Dongyang SHI ,  Ning CHEN ,  Haizu JIN ,  Zhenhua LI ,  Fei HU

IPC: H01M50/502 ,  H01M50/147 ,  H01M50/543 ,  H01M50/54 ,  H01M50/533

Abstract: The present application relates to a current collector and a secondary battery. The current collector is used to electrically connect a pole and tab of a secondary battery, and comprises: a first sheet; a second sheet that is disposed to intersect the first sheet, the second sheet being used to electrically connect to the pole; a current collection unit, the current collection unit and the second sheet being disposed at two opposite sides of the first sheet in a first thickness direction thereof, and the first thickness direction thereof intersecting with a second thickness direction of the second sheet; the current collection unit comprises a first current collection sheet, the first current collection sheet is used to electrically connect to the tab, and the first current collection sheet is provided with a first connection terminal that is connected to the first sheet.

公开(公告)号：US20210320337A1

公开(公告)日：2021-10-14

申请号：US17357057

申请日：2021-06-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xingdi CHEN ,  Kaijie YOU ,  Ziyuan LI ,  Yanhuo XIANG ,  Dongyang SHI ,  Fei HU

IPC: H01M10/42 ,  A62C3/16 ,  H01M50/24

Abstract: The application provides a battery module, which includes a plurality of batteries, an upper cover, and a pressing strip. The pressing strip covers an explosion-proof valve of a battery, and includes a main body portion and a bottom plate portion. The bottom plate portion is connected to the main body portion and forms an accommodating cavity together with the main body portion. A fire extinguishing agent is sealed in the accommodating cavity. The bottom plate portion of the pressing strip is configured to be melted. The fire extinguishing agent is constantly stored in the accommodating cavity of the pressing strip, so as to avoid wasteful use of the fire extinguishing agent caused by the same flowing in all directions, so that the amount of the fire extinguishing agent can be maintained at a constant level at all times.

公开(公告)号：US20210126321A1

公开(公告)日：2021-04-29

申请号：US17139814

申请日：2020-12-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Kaijie YOU ,  Linggang ZHOU ,  Dongyang SHI ,  Yanhuo XIANG ,  Yongshou LIN ,  Fei HU

IPC: H01M50/507 ,  H01M50/207 ,  H01M50/342 ,  H01M50/547 ,  H01M50/244 ,  H01M10/0587

Abstract: The present disclosure provides a battery module, including a first battery cell arrangement structure, a second battery cell arrangement structure and a bus bar array. With battery cells stacked in a horizontal direction, a first battery cell arrangement structure and a second battery cell arrangement structure are stacked in a vertical direction, and a first bus bar of a bus bar array is used to sequentially connect the battery cells of the first battery cell arrangement structure and the second battery cell arrangement structure. As a result, a total positive electrode and a total negative electrode of a battery module are located at two ends of the battery module, which greatly reduces the possibility of a short circuit of the battery module and improves the safety of the battery module.

公开(公告)号：US20210119290A1

公开(公告)日：2021-04-22

申请号：US17137122

申请日：2020-12-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

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

IPC: 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.

公开(公告)号：US20200287179A1

公开(公告)日：2020-09-10

申请号：US16441895

申请日：2019-06-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Peng WANG ,  Haizu JIN ,  Linggang ZHOU ,  Dongyang SHI ,  Xingdi CHEN ,  Kaijie YOU

IPC: H01M2/10 ,  H01M2/12 ,  H01M10/04

Abstract: Disclosed is a battery module including a battery cell array structure, an upper cap and a lower cap, the battery cell array structure is disposed between the upper cap and the lower cap. Each battery cell includes an electrode assembly and a battery case. The electrode assembly is of a wound structure and flat, outer surface of the electrode assembly includes two flat surfaces facing each other in a vertical direction; or the electrode assembly is of a laminated structure, the first electrode plate, the separator and the second electrode plate are laminated in the vertical direction. Being distinguished from the existing technology, the maximum swelling force of the battery module may be reduced, thus end plates with smaller volumes may be selected to improve energy density of the battery module.

公开(公告)号：US20200212398A1

公开(公告)日：2020-07-02

申请号：US16394145

申请日：2019-04-25

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Kaijie YOU ,  Haizu JIN ,  Dongyang SHI ,  Fei HU ,  Yu TANG ,  Yuepan HOU ,  Ziyuan LI ,  Jun MA

IPC: H01M2/12 ,  H01M2/10

Abstract: The present application discloses a battery pack, comprising a first battery module, a second battery module, a housing and a fireproof member. The first battery module includes a plurality of battery cells which are provided with vents; the second battery module includes a plurality of battery cells which are provided with vents. Both the first battery module and the second battery module are arranged in the housing; the fireproof member is vertically disposed and located between the vents of the first battery module, where the vents of the first battery module and the vents of the second battery module both face the fireproof member. The battery pack prevents collective thermal runaway of the battery cells by using the fireproof member to separate the battery cells of the first battery modules and the battery cells of the second battery modules.