PROTECTIVE APPARATUS

This application relates to a protective apparatus (1). The protective apparatus (1) is configured to protect a to-be-welded part, the to-be-welded part includes a welding region, and the protective apparatus (1) includes a base (10) and a protective mechanism (20). The base (10) is configured for embedding the to-be-welded part. The protective mechanism (20) is connected to the base (10). The protective mechanism (20) includes a welding hole (201), where the welding hole (201) is provided corresponding to the welding region; and a surface of the protective mechanism (20) facing the welding hole (201) is provided with a thermally conductive coating (21), where the thermally conductive coating (21) is configured to guide substances formed in welding the to-be-welded part to slide down along the surface of the thermally conductive coating (21). The protective apparatus (1) in this application can improve welding quality of the welding region, thereby enhancing performance of the to-be-welded part.