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.