Wireless chargers are not harmful to mobile phones, and this technology is very mature in modern times. Although wireless charging technology has appeared in the 19th century, the popularity of mobile phone applications is not high. It uses the principle of \"magnetic resonance\" to allow the wireless charger to transmit an electric charge through the air to the phone's battery.Mobile phone wireless charger introduction:Wireless charger refers to the charger that does not need to be connected to the terminal device that needs to be charged without the traditional charging power cord, using the latest wireless charging technology, wireless charging technology obtained 20 patents in 2007. Wired charging where multiple devices can use a single charging base station, cell phones, MP3 players, power tools, and other power adapters will no longer exist. By using the magnetic field generated between the coils to magically transfer electrical energy, inductive coupling technology will become a bridge connecting the charging base station and the device. The wireless charging system mainly adopts the principle of electromagnetic induction, and realizes the energy transfer through the coil energy coupling.