Introduction of cooling fan application field-charging pile

Introduction of cooling fan application field-charging pile cooling fan

Under the current trend of "energy saving and emission reduction", the development of electric vehicles is unstoppable, and with its continuous development, the demand for charging piles for electric vehicles is increasing. Charging speed is a very important indicator of charging piles, and charging speeds can get faster and faster. This is not only a requirement for batteries and cables, but also has extremely high requirements for the heat dissipation system of charging piles.

The purpose of constructing charging facilities is to allow vehicles to be charged to replenish more than 50-60% of electrical energy through charging piles in a short period of time, of which DC fast charge can be fully charged for 1-2h, and AC slow charge can be fully charged for 6-8h. For car owners, of course, the faster the better, but if the charging speed increases, the current and voltage will increase, resulting in rapid and massive heat generation in the charging pile. Because the faster the charging speed, the greater the power of the inductive module of the charging pile, and the greater the charging current, which means the greater the heat generated by the inductive modules, power modules and other components.

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

The most common and common way to dissipate heat from charging piles is to install a cooling fan, which is easy to install, consumes less energy and has low cost, but the cooling fan has a poor heat dissipation effect when heat is easily accumulated in the heating body. The current industry's solution to this situation is to install thermally conductive silicon pads on charging pile inductors, chips and other modules to conduct heat to the outside, thereby reducing the temperature of the components. At the same time, the silicon pad has good elasticity and can play the role of shockproof and shock absorption. In addition, thermally conductive polymer composite materials prepared by the combination of thermally conductive inorganic powder and organic polymer matrix are also key materials for the design and manufacture of many charging pile industries. In this way, the heat generated inside the heating element that is not easily emitted is conducted, and the conducted heat can be easily solved by the cooling fan.