公开(公告)号：EP4328072A2

公开(公告)日：2024-02-28

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: B60L50/64

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：EP4328071A2

公开(公告)日：2024-02-28

申请号：EP23214636.5

申请日：2020-10-29

Applicant: BYD Company Limited

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

IPC: B60L50/64

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：EP4535535A1

公开(公告)日：2025-04-09

申请号：EP23815138.5

申请日：2023-05-29

Applicant: BYD Company Limited

Inventor： WAN, Long ,  PENG, Qingbo ,  TAN, Zhijia ,  LEI, Song ,  YANG, Shenglin

IPC: H01M50/244 ,  H01M50/242 ,  H01M50/231 ,  H01M50/218 ,  H01M50/249

Abstract: A battery protection bottom plate, a composite protection structure for a battery pack, and a vehicle. The battery protection bottom plate comprises an upper fiber-reinforced resin layer, a metal plate and a lower fib er-reinforced resin layer, the metal plate being located between the upper fiber-reinforced resin layer and the lower fiber-reinforced resin layer. The upper fiber-reinforced resin layer and the lower fiber-reinforced resin layer meet the following conditions: 0.4≤d 2 /d 1 ≤2, wherein d 1 is the thickness of the lower fiber-reinforced resin layer measured in mm, and d 2 is the thickness of the upper fiber-reinforced resin layer measured in mm.

公开(公告)号：EP4535531A1

公开(公告)日：2025-04-09

申请号：EP23815139.3

申请日：2023-05-29

Applicant: BYD Company Limited

Inventor： WAN, Long ,  LU, Zhipei ,  PENG, Qingbo ,  ZHU, Yan ,  TAN, Zhijia

IPC: H01M50/231 ,  H01M50/224 ,  H01M50/233 ,  H01M50/242 ,  H01M50/249

Abstract: A battery pack composite protection structure and a vehicle. The battery pack composite protection structure comprises a battery pack and a battery protection bottom plate, the battery protection bottom plate comprising a metal plate; the battery protection bottom plate is located below the battery pack, a buffer zone being formed between the battery pack and the battery protection bottom plate; the buffer zone and the metal plate satisfy the following conditions: (I), d is the thickness of the metal plate in mm; σ is the tensile strength of the metal plate in MPa; ε is the elongation at break of the metal plate; and h is the height of the buffer zone, in mm.

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：EP4439832A1

公开(公告)日：2024-10-02

申请号：EP23769797.4

申请日：2023-03-14

Applicant: BYD Company Limited

Inventor： TANG, Jianglong ,  LI, Jianqiang ,  LIAO, Zhengyuan ,  WAN, Long ,  HE, Wei

IPC: H01M50/244 ,  H01M50/249 ,  H01M50/289 ,  H01M50/291 ,  H01M50/204

CPC classification number: B60L50/64 ,  H01M50/204 ,  H01M50/233 ,  H01M50/249 ,  H01M50/289 ,  H01M50/242 ,  H01M50/244 ,  H01M50/291

Abstract: The present disclosure discloses an edge beam (23) for a battery tray (100), a battery tray (100), a battery pack (200) and a vehicle (2000). The edge beam (23) includes: an edge beam body (231). The edge beam body (231) defines a cavity (2311), and the edge beam body (231) has a partition portion (232). The partition portion (232) is located in the cavity, and the partition portion (232) is connected between a top wall (233) and a bottom wall (234) of the cavity to divide the cavity (2311) into a first sub-cavity (2351) and a second sub-cavity (2352). The first sub-cavity (2351) and the second sub-cavity (2352) are arranged in a first direction of the edge beam (23) in sequence. The first sub-cavity (2351) has a cross-sectional area of S1, the second sub-cavity (2352) has a cross-sectional area of S2, and S1 and S2 meet the relation formula: 0.8

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：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.