The wireless char utilizes electromagnetism to generate adsorbable electric energy,
There is a pure copper chip inside the mobile phone to absorb the electric energy of the charger and transmit it to the battery through the line, thus completing the operation of wireless charging.
1. wireless charging tips iPhone8/X adopts Qi(Chee) wireless charging standard. at present, there are two mainstream wireless charging standards: Power Matters Alliance(PMA) and Alliance for Wireless Power(A4WP). Qi was introduced by WPC, the first wireless charging industry standard organization, and merged with A4MP to form the new AirFuel Alliance.
Protocol standards are only second. According to the working principle, the common wireless charging in the market can be divided into electromagnetic induction type and magnetic vibration type.
Electromagnetic induction wireless charging, as its name implies, uses the electromagnetic induction principle of generating electricity and magnetism, that is, "electricity" and "magnetism" can be transformed into each other. The receiving/transmitting coil is installed at both ends of the mobile phone and the wireless charger respectively. The current of the wireless charger generates a magnetic field through the coil at the transmitting end. When the coil at the receiving end of the mobile phone is close to the magnetic field, it will generate current, which will be converted into usable DC direct current through the built-in rectification and voltage stabilization filter circuit of the mobile phone.
As for magnetic vibration wireless charging, it is relatively more complicated. By transmitting electromagnetic waves to transmit electric energy, the transmission distance far exceeds that of electromagnetic induction wireless charging, and the magnetic vibration technology has been improved by an order of magnitude, but the charging efficiency has been greatly reduced from 70%-75% of magnetic induction to less than 50%. This is also the main reason why magnetic wireless charging has not appeared in consumer electronic products so far.