公开(公告)号：US20250030102A1

公开(公告)日：2025-01-23

申请号：US18896850

申请日：2024-09-25

Applicant: BYD COMPANY LIMITED

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

IPC: H01M50/242 ,  B60L50/64 ,  H01M50/231 ,  H01M50/262

Abstract: A battery protection bottom plate includes a protective layer, a metal plate, and a fiber-reinforced resin layer. The metal plate is located between the protective layer and the fiber-reinforced resin layer, and the metal plate and the fiber-reinforced resin layer satisfies: 0 . 4 ≤ d 1 d 2 * e - ε 0 * σ 2 σ 0 * ε 2 + 0.5 ≤ 2. where d1 is a thickness of the fiber-reinforced resin layer in mm, d2 is a thickness of the metal plate in mm, ε2 is an elongation at break of the metal plate, σ2 is a tensile strength of the metal plate in MPa, ε0 is an elongation at break of the fiber-reinforced resin layer, and σ0 is a tensile strength of the fiber-reinforced resin layer in MPa.

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.