▎ 摘　　要

NOVELTY - A battery box comprises lower box body and upper cover sealing. The outer wall of lower box body is provided with protective layer. The protective layer is made of mixed material comprising polyurea and aerogel. USE - The battery box is used for electric vehicle (claimed). ADVANTAGE - The battery box has strong impact resistance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a mixed material comprising polyurea and aerogel, where it is used as coating material on vehicle floor or battery box shell. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of battery box shell.