How to solve the heating problem of wireless fast charging for car mobile phones?
We still have the following steps to address this issue:
1. Application scenarios of wireless fast charging cooling fan for car mobile phones
There is a significant difference in the usage environment between car mounted device heat dissipation and consumer electronics heat dissipation. Vehicle mounted equipment is located in a semi outdoor environment. Although it is not exposed to sunlight, wind, or rain, the equipment is affected by weather conditions, resulting in a wide range of effects on humidity, temperature, and dust. The extremely harsh weather of minus 40 degrees Celsius in the north, the humid atmosphere in the south all year round, and the sustained high temperature in the summer. However, wireless fast charging for in car mobile phones belongs to the category of state stacking, which not only needs to deal with the high and low temperatures of the vehicle itself, but also needs to apply the self heating generated by the device itself during operation. The limited size of the device itself makes maintenance and replacement of in car devices very inconvenient.
So, in solving the problem of heat dissipation in car wireless fast charging, we should start from these application environments and provide heat dissipation solutions based on the device itself.
2. Design concept of wireless fast charging cooling fan for car mobile phones
Firstly, the lifespan is crucial. The design of automotive grade electronic devices requires a sufficiently long lifespan, so the cooling fan needs to meet the principle of long lifespan in extreme environments. The lifespan of the LD4007 cooling fan can reach 50000 to 20000 hours
The second is heat dissipation efficiency. When automotive electronic devices are working, the temperature is generally affected by the environment, so the heat dissipation efficiency must keep up. The customized cooling fan of LD4007 can reach a speed of 5000~7000RPM and an air volume of 4.9~15CFM. The combination of high air volume and PWM function effectively ensures heat dissipation efficiency while also considering service life.
The third is the design size. The wireless fast charging device for cars has a small volume, and the cooling fan needs to be matched in a small volume to still meet the demand for high air volume. LD4007 customized cooling fan size: Φ 40mm × Thickness 7mm, small size also has high energy.
The fourth is the user experience. There are many in car devices, and there is already a lot of noise during operation. Therefore, the noise control of the wireless fast charging cooling fan also needs to be excellent enough. LD adopts automotive grade fan bearings, which have higher operating efficiency and better noise control.
The fifth aspect of heat dissipation stability is that the fan blades of the LD4007 series heat dissipation fan are made of PBT heat-resistant and cold resistant material, ensuring stability in extreme changing environments. In addition, high-performance bearings ensure their service life. IP54 protection enhances its stability in handling responsible working conditions during operation.
3. Deployment plan for wireless fast charging cooling fan for car mobile phones
Due to the limited size of wireless fast charging for car phones, only one cooling fan is allowed to be located. Therefore, designers should try to install it near the modules with the most severe heat dissipation in order to improve heat dissipation efficiency.
