The concept of "wireless charging" sounds very cool, and the impact it brings seems to be no less than mobile phones replacing landline, digital replacing film, and WiFi replacing network cables. As soon as we see the word "wireless", we can't help but associate it with words like "free from constraints" and "freedom". However, seemingly cool wireless charging is not complicated in terms of technical principles, as Tesla, a scientist 100 years ago, had already proposed an idea. At present, the working mode of the vast majority of wireless chargers is that the coil in the charging head rotates to drive the back coil of the phone to rotate, thereby generating electricity.

Advantages of wireless charging

① Stronger sense of technology

Compared to traditional wired charging methods, wireless charging is undoubtedly more cool. It does not require a long data cable to be inserted into the phone. When charging, simply place the phone on the charging board and remove it directly when fully charged.

In addition, with the development of wireless charging technology, some wireless charging bases similar to charging bowls have begun to appear. The AirPower on this year's Apple autumn launch PPT is a similar device, which can simultaneously charge multiple devices such as iPhone, Apple Watch, Air Pods, etc., with a sharp increase in convenience.

In addition, if wireless charging technology can be widely popularized, the charging experience in public places will be improved in the future. For example, at the airport, users with a dead phone can simply place their phone on a table with wireless charging function.

② More convenient to use

The wireless charging of mobile phones on the market mainly adopts the principle of electromagnetic induction to achieve wireless charging. There is no interface between the charger and the phone. The phone has a built-in receiver coil, and the charger has a built-in transmitter coil. They charge the phone through electromagnetic induction between them. No matter what brand of phone you buy, as long as it is compatible with the wireless charging standard of the charging head, it can basically charge. In wired charging, the Android camp generally uses the USB-C interface, and Apple has its own interface.

③ Good interface durability

Wireless charging of mobile phones reduces the wear and tear of the data interface due to the lack of frequent plugging and unplugging of charging cables. At the same time, the coil of wireless charging for mobile phones is not exposed to the air, which can also reduce the oxidation and corrosion of the charging unit. Wired charging, on the other hand, is prone to wear and tear due to frequent plugging and unplugging, and coupled with exposed interfaces, it is prone to oxidation and corrosion.