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.