公开(公告)号：EP4535530A1

公开(公告)日：2025-04-09

申请号：EP23815130.2

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 protective bottom plate, a battery pack composite protective structure and a vehicle. The battery protective bottom plate comprises an upper fiber reinforced resin layer, a metal plate and a lower fiber reinforced resin layer, wherein the metal plate is located between the upper fiber reinforced resin layer and the lower fiber reinforced resin layer, and the following condition is satisfied: (I) 1 ≤ ρ 2 ∗ d 1 + d 2 + d 3 / d 2 ρ 2 + ρ 1 ∗ d 1 + ρ 3 ∗ d 3 / d 1 + d 3 ∗ σ 1 ∗ d 1 + σ 3 ∗ d 3 / d 1 + d 3 σ 2 ≤ 2 .

公开(公告)号：EP4223574A1

公开(公告)日：2023-08-09

申请号：EP21908443.1

申请日：2021-05-12

Applicant: BYD Company Limited

Inventor： WAN, Long ,  LU, Zhipei ,  PENG, Qingbo ,  WU, Lei

IPC: B60L3/00 ,  B60L50/64 ,  H01M50/249 ,  H01M50/244 ,  H01M10/48

Abstract: A battery pack protection system (100) and a vehicle are provided. The battery pack protection system includes a battery pack (1) and a protective plate (2). The battery pack (1) includes a tray (11). The tray (11) includes a frame (13) and a bottom plate (12). Battery modules are arranged on the bottom plate (12). The protective plate (2) is arranged parallel to the bottom plate (12), and the protective plate (2) is close to a side of the bottom plate (12). At least one sensor (3) is arranged on the protective plate (2). The protective plate (2) is detachably connected to the frame (13).

公开(公告)号：EP3905369A1

公开(公告)日：2021-11-03

申请号：EP19902817.6

申请日：2019-07-30

Applicant: BYD Company Limited

Inventor： REN, Zhenghua ,  LU, Zhipei ,  GUO, Kun ,  PENG, Qingbo ,  ZHU, Yan

IPC: H01M2/10

Abstract: The present disclosure relates to a battery tray and a power battery pack. The battery tray includes a tray body. The tray body includes a base plate (10) and a side beam (20), and the side beam (20) is disposed around the base plate (10) and defines, together with the base plate (10), an accommodating space for battery cells (200). The base plate (10) is formed therein with an air passage, and the base plate (10) is provided with several inlet vents (31) and at least one exhaust vent. The inlet vent (31) is configured to introduce a flame, smoke or gas discharged from the battery cell (200) into the air passage, and the exhaust vent is configured to discharge the flame, smoke or gas inside the air passage.

公开(公告)号：EP3238307A1

公开(公告)日：2017-11-01

申请号：EP15871948.4

申请日：2015-12-22

Applicant: BYD Company Limited

Inventor： PENG, Qingbo ,  ZHENG, Weixin ,  LU, Zhipei ,  ZHU, Yan ,  ZHU, Jianhua

IPC: H01R4/58 ,  H01M2/20

CPC classification number: H01M2/206 ,  B23K20/06 ,  B23K20/233 ,  B23K20/2336 ,  B23K2201/36 ,  B23K2203/10 ,  B23K2203/12 ,  H01M2220/20 ,  H01R4/625 ,  H01R11/288 ,  H01R31/06 ,  H01R43/0207

Abstract: The present disclosure discloses a battery connection sheet, including: a first part, including a first metal sheet, a first buffer portion and a first connection portion, and a second part, including a second metal sheet connected with the first connection portion via electromagnetic pulse welding.

Abstract translation: 一种电池连接片（6），包括：第一部分，包括第一金属片（1），第一缓冲部分（3）和第一连接部分（7）; 以及第二部分，包括通过电磁脉冲焊接与第一连接部分连接的第二金属片（2）。

公开(公告)号：EP4447210A1

公开(公告)日：2024-10-16

申请号：EP23745923.5

申请日：2023-01-10

Applicant: BYD Company Limited

Inventor： WAN, Long ,  LU, Zhipei ,  PENG, Qingbo ,  TAN, Zhijia ,  SUN, Zenan

IPC: H01M50/231

Abstract: The present disclosure discloses a protective plate for a battery pack, a battery pack and a vehicle. The protective plate includes a first fiber-resin composite layer, a metal layer and a buffering layer laminated in sequence.

公开(公告)号：EP4328073A3

公开(公告)日：2024-05-01

申请号：EP23214639.9

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：EP4328071A3

公开(公告)日：2024-05-01

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: 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：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

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.

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.