Battery protection box, battery pack and electric automobile

The utility model relates to a battery protection box, a battery pack and an electric automobile. The battery protection box comprises a shell and an electrical element, the shell is provided with a containing cavity used for containing electrical elements, and heat dissipation through holes are formed in the shell; the electrical element comprises relays, a copper bar and a plurality of ceramic radiators, the relays comprise a first relay and a second relay, the copper bar is detachably fixed on the first relay and the second relay, the first relay and the second relay are connected in series through the copper bar, and the ceramic radiators are detachably fixed on the copper bar to radiate heat of the copper bar. The heat dissipation efficiency of the copper bar is improved, and the heat dissipation problem of the battery protection box in the charging and discharging process is solved. 本实用新型涉及一种电池保护盒、电池包及电动汽车，电池保护盒包括壳体和电气元件；壳体具有容纳腔，用于容纳电气元件，壳体上开设有散热通孔；电气元件包括继电器、铜排和多个陶瓷散热器，继电器包括第一继电器和第二继电器，铜排可拆卸地固定在第一继电器和第二