Charging pile is a kind of supporting facility that arises at the historic moment with the rapid development of electric vehicles in the current trend of new energy application. With its continuous development, the demand for charging piles for electric vehicles is also increasing. Charging speed is a very important indicator of charging pile, and charging speed is getting faster and faster, which also improves the heat dissipation system of charging pile.

We understand that the purpose of building charging facilities is to allow vehicles to charge 50-60% of electric energy in a short period of time, of which DC fast charging takes one to two hours and AC slow charging takes six to eight hours. As the charging speed increases, the current and voltage will increase, resulting in a large amount of heat. The faster the charging speed, the higher the power of the charging pile inductance module and the higher the charging current, which means the higher the heat generated by the inductance module, power module and other components.

At present, the efficiency of mainstream modules in the industry is nominally 95%, taking a 60KW system as an example, the module heat dissipation alone can reach 60 * 0.05 * 1000=3000 W. It can be seen that the charging pile generates a large amount of heat in the charging process, and if it is not released in time, it will cause a great safety accident.

The most common and common heat dissipation method of charging pile is to install fan heat dissipation air .it is easy to install, consumes less energy and has low cost.however, the heat dissipation fan has poor heat dissipation effect when heat is easy to accumulate in the heating body. At present, the solution to this situation in the industry is to transfer heat to the outside by adding heat-conducting silicon pads to modules such as charging pile inductors and chips, so as to reduce the temperature of components. At the same time, the silicon pad has good elasticity and can play a role in shock absorption. In addition, the thermal conductive polymer composite prepared by compounding the thermal conductive inorganic powder and the organic polymer matrix is also a key material for the design and manufacture of many charging pile industries. In this way, the heat generated in the heating element that is not easy to emit is conducted out, and the conducted heat can be easily solved by the heat dissipation fan.