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    BATTERY PACK AND ELECTRIC VEHICLE
    15.
    发明公开
    BATTERY PACK AND ELECTRIC VEHICLE 审中-公开

    公开(公告)号：EP4311008A2

    公开(公告)日：2024-01-24

    申请号：EP23214631.6

    申请日：2020-10-29

    Applicant: BYD Company Limited

    Inventor： SUN, Huajun ,  LU, Zhipei ,  PENG, Qingbo ,  WAN, Long ,  ZHU, Yan

    IPC: H01M50/502

    Abstract: The present disclosure provides a battery pack and an electric vehicle. The battery pack includes a sealed housing, and at least one housing structural beam and multiple electrode core strings electrically connected to one another located in the housing. The housing includes a housing body, including a top plate and a bottom plate arranged opposite to each other in a first direction. The structural beam is located between the top plate and the bottom plate, the at least one structural beam divides the interior of the housing into multiple accommodating cavities, the at least one structural beam is connected to the top plate and the bottom plate, and at least one electrode core string is provided in at least one accommodating cavity An atmospheric pressure in the accommodating cavity is lower than an atmospheric pressure outside the housing. A mounting portion is provided on the housing, and the mounting portion is configured to be connected and fixed to an external load. The electrode core string includes multiple electrode core assemblies sequentially disposed in a second direction and connected in series The electrode core assembly is encapsulated in an encapsulation film. A length direction of the electrode core string extends in the second direction

    ASSEMBLING METHOD FOR BATTERY PACK, BATTERY PACK AND VEHICLE
    16.
    发明公开
    ASSEMBLING METHOD FOR BATTERY PACK, BATTERY PACK AND VEHICLE 审中-公开

    公开(公告)号：EP4300685A1

    公开(公告)日：2024-01-03

    申请号：EP22831727.7

    申请日：2022-06-17

    Applicant: BYD Company Limited

    Inventor： LU, Peng ,  PENG, Qingbo ,  LU, Zhipei

    IPC: H01M50/244

    Abstract: Provided are a battery pack using a method for assembling a battery pack and a vehicle. The battery pack includes a box and battery modules. The box is provided with cavities inside. The battery module includes foam and multiple cells. The foam is arranged between adjacent cells. The method for assembling a battery pack includes the following steps: the battery module is loaded into an insulating bag; the insulating bag is vacuumized so that the foam is compressed to reduce the volume of the battery module; and after the battery module of the reduced volume is inserted into the cavity, a vacuum state is released and positive and negative electrodes of the battery module are exposed.

    BATTERY COOLING PLATE, AND BATTERY SYSTEM
    17.
    发明公开
    BATTERY COOLING PLATE, AND BATTERY SYSTEM 审中-公开

    公开(公告)号：EP4300659A1

    公开(公告)日：2024-01-03

    申请号：EP22831632.9

    申请日：2022-06-07

    Applicant: BYD Company Limited

    Inventor： GUO, Shu ,  PENG, Qingbo

    IPC: H01M10/613

    Abstract: The present disclosure provides a battery cold plate and a battery system. The battery system includes batteries and the battery cold plate. The battery cold plate includes two external interfaces, two convergence pipelines, and multiple branches. The two external interfaces are respectively in communication with the middle positions of the two convergence pipelines, so that the flow path of cooling liquid in the convergence pipeline is enabled to be half of the length of the convergence pipeline, so that the along-the-way flow resistance of the cooling liquid in the convergence pipeline can be reduced. The multiple branches are arranged side by side, and both ends of each of the branches are respectively in communication with the two convergence pipelines through multiple throttling ports. The total cross-sectional area of multiple throttling ports in a branch close to the external interface is less than the total cross-sectional area of multiple throttling ports in a branch away from the external interface, the cross-sectional areas of various sub-branches are the same, the flow resistance of the various branches can be balanced, it is ensured that the flow resistance in the various branches is consistent, and the flow rate of the cooling liquid in the various branches is made to be in balance, further making the temperature of various positions of the cold plate uniform, improving the heat dissipation balance and efficiency and facilitating lowering the demand of the system for the power of a circulation pump, which further reduces the system cost.

    BATTERY PACK HOUSING, BATTERY PACK AND ELECTRIC VEHICLE
    18.
    发明公开
    BATTERY PACK HOUSING, BATTERY PACK AND ELECTRIC VEHICLE 审中-公开

    公开(公告)号：EP4156388A1

    公开(公告)日：2023-03-29

    申请号：EP20936964.4

    申请日：2020-11-11

    Applicant: BYD Company Limited

    Inventor： WANG, Xiaopeng ,  PENG, Qingbo ,  LU, Zhipei ,  ZHU, Jianhua ,  ZHU, Yan

    IPC: H01M50/112

    Abstract: The present disclosure provides a battery pack housing, a battery pack, and an electric vehicle. The housing includes a housing body, where the housing body includes multiple connected sub-housings, and at least one sub-housing is provided with at least one reinforcing plate therein. The sub-housing includes a top plate and a bottom plate arranged opposite to each other in a first direction, where the first direction is a height direction of the housing. The reinforcing plate is located between the top plate and the bottom plate, the at least one reinforcing plate is connected to the top plate and the bottom plate, and the at least one reinforcing plate divides the interior of a corresponding sub-housing into multiple accommodating cavities. A mounting portion is provided on the housing, which is configured to be connected and fixed to an external load. The battery pack housing according to the present disclosure has high structural strength, high space utilization rate, simple structure, high assembly efficiency, and high versatility.

    BATTERY PACK AND ELECTRIC VEHICLE
    19.
    发明公开
    BATTERY PACK AND ELECTRIC VEHICLE 审中-公开

    公开(公告)号：EP4142027A1

    公开(公告)日：2023-03-01

    申请号：EP20932320.3

    申请日：2020-10-29

    Applicant: BYD Company Limited

    Inventor： SUN, Huajun ,  LU, Zhipei ,  PENG, Qingbo ,  WAN, Long ,  ZHU, Yan

    IPC: H01M50/112

    Abstract: The present disclosure provides a battery pack and an electric vehicle. The battery pack includes a housing, at least one structural beam located in the housing, and multiple electrode core strings electrically connected to one another located in the housing. The housing includes a housing body including a top plate and a bottom plate arranged opposite to each other in a first direction. The at least one structural beam is located between the top plate and the bottom plate, the at least one structural beam is connected to the top plate and the bottom plate, the at least one structural beam divides the interior of the housing into multiple accommodating cavities, and at least one electrode core string is provided in at least one accommodating cavity. A mounting portion is provided on the housing, and the mounting portion is configured to be connected and fixed to an external load. The electrode core string includes multiple electrode core assemblies sequentially disposed in a second direction and connected in series. The multiple electrode core assemblies are encapsulated in an encapsulation film. A length direction of the electrode core string extends in the second direction.

    BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRIC VEHICLE
    20.
    发明公开
    BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRIC VEHICLE 审中-公开

    公开(公告)号：EP4109651A1

    公开(公告)日：2022-12-28

    申请号：EP21757406.0

    申请日：2021-02-04

    Applicant: BYD Company Limited

    Inventor： HU, Shichao ,  PENG, Qingbo ,  ZHU, Yan

    IPC: H01M50/209 ,  H01M50/51

    Abstract: A cell (100), a battery module (300), a battery pack (200), and an electric vehicle (1000) are provided. The cell (100) includes a metal housing (11) and at least one electrode core assembly array (14) encapsulated inside the metal housing (11). The electrode core assembly array (14) includes N rows and M columns of electrode core assemblies (12), and the electrode core assembly (12) includes an encapsulation film and at least one electrode core encapsulated inside the encapsulation film. In a length direction of the cell (100), the electrode core assemblies (12) are arranged in rows and each row includes M electrode core assemblies (12). In a thickness or height direction of the cell (100), the electrode core assemblies (12) are arranged in columns and each column includes N electrode core assemblies (12). The N electrode core assemblies (12) in each column are connected in series to form an electrode core assembly string (13). The M electrode core assembly strings (13) are connected in series. M and N are integers greater than 1. An air pressure between the metal housing (11) and the encapsulation film is lower than an air pressure outside the metal housing (11).

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