公开(公告)号：US20230023909A1

公开(公告)日：2023-01-26

申请号：US17780892

申请日：2020-10-22

Applicant: BYD COMPANY LIMITED

Inventor： Long HE ,  Huajun SUN ,  Zhipei LU ,  Long WAN ,  Yan ZHU

IPC: H01M50/209 ,  H01M50/236 ,  H01M50/244 ,  H01M50/249 ,  H01M50/26

Abstract: A battery pack and an electric vehicle are provided. The battery pack includes a cell array and two first reinforcing plates. The cell array includes a number of cells. Each of the cells is defined with a length L, a thickness D, and a height H between the length L and the thickness D. The number of cells are arranged along a thickness direction, and the cells are adhered to each other by a structural adhesive. The two first reinforcing plates are arranged opposite to each other and are respectively adhered to two surfaces of the cell array along the arrangement direction of the cells, and are configured to constrain relative positions between the cells.

公开(公告)号：US20240356131A1

公开(公告)日：2024-10-24

申请号：US18759680

申请日：2024-06-28

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/233 ,  H01M50/244 ,  H01M50/249 ,  H01M50/262

CPC classification number: H01M50/233 ,  H01M50/244 ,  H01M50/249 ,  H01M50/262 ,  H01M2220/20

Abstract: A battery tray, a battery pack, and a vehicle are provided. The battery tray includes a tray bottom plate and a frame. The tray bottom plate includes a bottom plate body. The bottom plate body defines a placing slot configured to place a battery core. A bottom wall of the placing slot is provided with a pressed area configured to support the battery core. The bottom plate body is mounted at the frame. The frame has a support portion. The support portion is configured to support the bottom plate body. An orthographic projection of the support portion and an orthographic projection of the pressed area overlap in a height direction of the battery tray.

公开(公告)号：US20230198068A1

公开(公告)日：2023-06-22

申请号：US17972120

申请日：2022-10-24

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/24 ,  H01M50/30 ,  H01M50/505 ,  H01M50/211 ,  H01M50/509 ,  H01M50/569 ,  H01M50/291 ,  H01M50/249 ,  B60K1/04

CPC classification number: H01M50/24 ,  H01M50/394 ,  H01M50/505 ,  H01M50/211 ,  H01M50/509 ,  H01M50/569 ,  H01M50/291 ,  H01M50/249 ,  B60K1/04 ,  H01M2220/20

Abstract: A 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, and 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.

公开(公告)号：US20220416343A1

公开(公告)日：2022-12-29

申请号：US17777938

申请日：2020-10-22

Applicant: BYD COMPANY LIMITED

Inventor： Long HE ,  Huajun SUN ,  Yan ZHU ,  Liangwen TAN ,  Long WAN

IPC: H01M50/209 ,  H01M50/218 ,  H01M10/6555 ,  H01M10/613 ,  H01M10/625 ,  B60L50/64

Abstract: This application relates a battery pack and an electric vehicle. The battery pack includes a housing provided with a bottom surface and a top surface. A battery assembly is arranged in the housing. The battery assembly includes a structural reinforcing member and a cell sequence formed by connecting multiple cells. An outer surface of the cell includes a bottom surface, a top surface, first lateral surfaces, and two opposing second lateral surface. The bottom surface of the cell faces the bottom surface of the housing, and the top surface of the cell faces the top surface of the housing. The first lateral surface has a largest area. The multiple cells are arranged with second lateral surfaces thereof facing each other to form the cell sequence, and the structural reinforcing member is fixedly bonded with a first lateral surface of each cell in the cell sequence. The battery assembly abuts with the bottom surface of the housing to be supported in the housing.

公开(公告)号：US20230042566A1

公开(公告)日：2023-02-09

申请号：US17972099

申请日：2022-10-24

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/244 ,  H01M50/249 ,  B60L50/60 ,  B60L50/64

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 disposed in the housing body. 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, the first direction is a height direction of the battery pack housing, and the structural beam is located between and attached to the top plate and the bottom plate. The battery pack housing comprises a mounting part for connecting 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.

公开(公告)号：US20230041540A1

公开(公告)日：2023-02-09

申请号：US17971901

申请日：2022-10-24

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/291 ,  H01M50/211 ,  H01M50/271 ,  H01M50/509 ,  H01M50/242 ,  H01M50/224 ,  H01M50/178 ,  H01M50/548 ,  H01M50/503 ,  B60L50/64

Abstract: A battery pack includes a 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 is connected to the top plate and the bottom plate, and 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.

公开(公告)号：US20250015414A1

公开(公告)日：2025-01-09

申请号：US18891522

申请日：2024-09-20

Applicant: BYD COMPANY LIMITED

Inventor： Long WAN ,  Zhipei LU ,  Qingbo PENG ,  Zhijia TAN ,  Jianqiang LI

IPC: H01M50/242 ,  B32B5/12 ,  B32B15/14 ,  B32B15/18 ,  B60L50/64 ,  H01M50/224 ,  H01M50/227 ,  H01M50/229 ,  H01M50/231 ,  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, a fiber reinforced resin frame, and a lower fiber reinforced resin layer; the metal plate and the fiber reinforced resin frame are located between the upper fiber reinforced resin layer and the lower fiber reinforced resin layer; the metal plate is located inside the fiber reinforced resin frame; the top surface of the fiber reinforced resin frame is integrally connected to the upper fiber reinforced resin layer; the bottom surface of the fiber reinforced resin frame is integrally connected to the lower fiber reinforced resin layer.

公开(公告)号：US20250007066A1

公开(公告)日：2025-01-02

申请号：US18886350

申请日：2024-09-16

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/242 ,  B60L50/64 ,  H01M50/224 ,  H01M50/229 ,  H01M50/231

Abstract: The battery pack composite includes a battery pack and a battery protection bottom plate. The battery protection bottom plate includes a metal plate and is disposed below the battery pack. A buffer zone is disposed between the battery pack and the battery protection bottom plate, and the buffer zone and the metal plate satisfying: 0.018 ≤ ( d - 0.4 ) ⁢ h σ * ε ≤ 0 . 0 ⁢ 8 ⁢ 5 , where d is a thickness in mm of the metal plate, σ is a tensile strength in MPa of the metal plate, ε is an elongation at break of the metal plate, and h is a height in mm of the buffer zone.

公开(公告)号：US20250007065A1

公开(公告)日：2025-01-02

申请号：US18886098

申请日：2024-09-16

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/242 ,  B60L50/64 ,  H01M50/224 ,  H01M50/229 ,  H01M50/231 ,  H01M50/291

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：US20240372198A1

公开(公告)日：2024-11-07

申请号：US18777729

申请日：2024-07-19

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/242 ,  B60R16/033 ,  H01M50/224 ,  H01M50/227 ,  H01M50/229 ,  H01M50/231 ,  H01M50/249

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.