Generally speaking, when discussing the sealing performance of automobile HDMI connector, it is not only about the sealing performance of water in automobile. In this field, IP67 is an internationally popular management standard. Although different parts of the vehicle have different waterproof requirements, many automobile manufacturers will choose IP67 to ensure the sealing performance of their automobile HDMI connectors. The power supply is a very important energy source in automobile driving, which not only relates to the normal work of the engine, but also often involves the use of the power supply in the driving process. Therefore, in the automobile power supply system, the automobile connector has different division. Some sealing measures can be taken between male connector and equipment, between male connector and cable, between male connector and female connector, and between female connector and cable.