公开(公告)号：EP4481919A1

公开(公告)日：2024-12-25

申请号：EP23815140.1

申请日：2023-05-29

Applicant: BYD Company Limited

Inventor： TAN, Zhijia ,  WAN, Long ,  PENG, Qingbo ,  WANG, Ran ,  SUN, Zenan

IPC: H01M50/231 ,  H01M50/224 ,  H01M50/227 ,  H01M50/249 ,  H01M50/244 ,  H01M50/24 ,  H01M50/242 ,  H01M50/236

Abstract: In order to overcome the problem of the corrosion resistance of existing battery pack bottom protection plates being insufficient due to a surface PVC layer peeling under impact, the present application provides a battery protection bottom plate, comprising a protection layer, a metal plate and a fiber-reinforced resin layer. The metal plate is located between the protection layer and the fiber-reinforced resin layer, and the metal plate and the fiber-reinforced resin layer satisfy the condition in formula I. 0.4 ≤ d 1 d 2 * e − ε 0 ∗ σ 2 σ 0 ∗ ε 2 + 0.5 ≤ 2.0
In addition, further disclosed in the present application are a battery pack composite protection structure comprising the battery protection bottom plate, and a vehicle.

公开(公告)号：EP4328072A3

公开(公告)日：2024-05-01

申请号：EP23214637.3

申请日：2020-10-29

Applicant: BYD Company Limited

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

IPC: H01M50/112 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647 ,  H01M10/6557 ,  H01M50/10 ,  H01M50/204 ,  H01M50/207 ,  H01M50/209 ,  H01M50/211 ,  H01M50/224 ,  H01M50/242 ,  H01M50/249 ,  H01M50/291 ,  H01M50/358 ,  H01M50/367 ,  B60L50/64

CPC classification number: Y02E60/10 ,  Y02T10/70 ,  B60L50/64 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647 ,  H01M50/10 ,  H01M50/204 ,  H01M50/211 ,  H01M50/224 ,  H01M50/242 ,  H01M50/249 ,  H01M50/291 ,  H01M50/358 ,  H01M10/6557 ,  H01M50/207 ,  H01M50/209 ,  H01M50/367

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.

公开(公告)号：EP4329081A2

公开(公告)日：2024-02-28

申请号：EP23214628.2

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.

公开(公告)号：EP4318781A2

公开(公告)日：2024-02-07

申请号：EP23214629.0

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

公开(公告)号：EP4300660A1

公开(公告)日：2024-01-03

申请号：EP22831805.1

申请日：2022-06-22

Applicant: BYD Company Limited

Inventor： XIONG, Bojun ,  PENG, Qingbo ,  YI, Ning

IPC: H01M10/615 ,  H01M10/6571 ,  H01M50/204

Abstract: A battery pack (100) is provided. The battery pack (100) includes: a battery box (1), the battery box (1) having a distribution cavity; a distribution box (2) being arranged in the distribution cavity; the distribution box (2) including a panel (21); and the panel (21) having a first flow channel and a refrigerant inlet/outlet joint (6) in communication with the first flow channel; and a thermoregulation member (5), the thermoregulation member (5) being connected with the battery box (1); and the thermoregulation member (5) having a second flow channel in communication with the first flow channel.

公开(公告)号：EP4297156A1

公开(公告)日：2023-12-27

申请号：EP22831738.4

申请日：2022-06-17

Applicant: BYD Company Limited

Inventor： CHEN, Jiajia ,  TANG, Jianglong ,  PENG, Qingbo

IPC: H01M50/204 ,  H01M50/293 ,  H01M50/227

Abstract: The present disclosure provides a battery box, a battery pack with the battery box, and a vehicle. The battery box (100) includes a metal frame (10). Multiple accommodating cavities (101) for accommodating cells (500) are formed in the metal frame (10). An inner surface of the accommodating cavity (101) is provided with an insulation coating (40). A thickness D of the insulation coating meets: D = V × A p × I . I represents a test current, V represents a test voltage, and p represents a volume resistivity of the insulation coating; D represents a spraying thickness of the insulation coating; and A represents a total spraying area of the insulation coating.

公开(公告)号：EP4287363A1

公开(公告)日：2023-12-06

申请号：EP22779021.9

申请日：2022-03-30

Applicant: BYD Company Limited

Inventor： FANG, Cheng ,  PENG, Qingbo ,  XIONG, Bojun ,  E, Congji ,  GAO, Jian

IPC: H01M50/10

Abstract: The present disclosure relates to a battery pack power connection system and a vehicle. The battery pack power connection system comprises a battery pack, a tray, a distribution box, a first drive connector, and a power connector. The battery pack comprises a plurality of battery cores. The tray is configured to support the battery pack. The distribution box is configured to distribute input or output information of the battery pack. One end of the first drive connector is connected with a first power system. The power connector is arranged in a cavity inner space of the tray, and the power connector is located between the plurality of battery cores. One end of the power connector is connected with the distribution box, and another end of the power connector is connected with another end of the first drive connector.

公开(公告)号：EP4243189A1

公开(公告)日：2023-09-13

申请号：EP21893556.7

申请日：2021-09-17

Applicant: BYD Company Limited

Inventor： ZHAO, Zhe ,  TAO, Naishu ,  PENG, Qingbo

IPC: H01M50/51

Abstract: A smart connection sheet (2), a battery pack, and a vehicle are provided. The smart connection sheet (2) includes a conductive connection member (21) and a cut-off apparatus (221). Two ends of the conductive connection member (21) are respectively connected to terminals of two adjacent battery cores of the battery pack. When receiving a cut-off signal, the cut-off apparatus (221) cuts off the conductive connection member (21).

公开(公告)号：EP4142024A1

公开(公告)日：2023-03-01

申请号：EP20932601.6

申请日：2020-10-29

Applicant: BYD Company Limited

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

IPC: H01M50/10 ,  H01M50/105

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.

公开(公告)号：EP4138179A1

公开(公告)日：2023-02-22

申请号：EP20931797.3

申请日：2020-11-11

Applicant: BYD Company Limited

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

IPC: H01M50/10

Abstract: The present disclosure provides a battery pack housing, a battery pack, and an electric vehicle. The battery pack housing includes a housing body and at least one structural beam inside the housing body, and the at least one structural beam divides the internal space of the housing body into a number of accommodation cavities. The housing body 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 battery pack housing, the structural beam locates between the top plate and the bottom plate, and the at least one structural beam is attached to the top plate and the bottom plate. The battery pack housing is arranged with a mounting portion for a fixed connection with an external load. The battery pack housing disclosed in the present disclosure has relatively high strength and stiffness as well as high space utilization.