In simple terms, the so-called wireless charging is that it can be charged without touching the wire, and the mobile phone that supports wireless charging can be put and charged on the wireless charger. Wireless charging methods include electromagnetic induction, magnetic resonance, electric field coupling and radio wave transmission, etc. Wireless charging of mobile phones mostly uses the principle of electromagnetic induction. At present, the principle of the mainstream mobile phone wireless charging: electromagnetic induction wireless charging, when the current of the power supply through the coil (wireless charger's power supply coil) will generate a magnetic field, other unenergized coil (mobile phone side of the electric coil) close to the magnetic field will generate current, charging for the mobile phone. The phone charging seat and the terminal have built-in coils, so that when the two are close, they begin to supply power from the charging seat to the terminal. It is through these principles and the built-in coil that the \"wireless charging\" function is realized.
1, the advantages of mobile phone wireless charging: wireless charging is more convenient, no need for mobile phone interface can be charged; The use scenario of wireless charging has been expanded, and fragmented charging is easier to achieve. Secondly, because of the working principle, wireless charging can realize the design of no power contact and avoid the danger of electric shock.
2, mobile phone wireless charger disadvantages: slow charging speed, low charging efficiency. Compared with the current wireless charging speed of wired is not fast, wired has high power and high current fast charging, and even 40W fast charging has appeared; However, the wireless fast charge is still at 7.5W and 10w low power. The cost of wireless charging is relatively high, and the phone and charger need to have wireless coils to charge.