Adhering to the industry’s consistent design concept, vehicle manufacturers should consider charging sockets equipped with a variety of common components and applicable to a variety of standards. They should also consider the compatibility of charging sockets in different regions on the basis of the same vehicle configuration and hardware, which is also a key issue that global vehicle platforms must consider. Another requirement for flexibility is that the same charging socket technology can be used for different car models, although each model has a different electrical and physical structure.