1. Wireless charging of mobile phones means that the charger and the electrical device can charge the mobile phone without connecting them with wires.
2. Wireless charging technology (Wireless? charging? technology; Wireless charge technology) is derived from wireless energy transmission technology. Low-power wireless charging often uses electromagnetic induction, and high-power wireless charging often uses resonance ( Most electric vehicles charge in this way. The power supply device (charger) transmits energy to the device that consumes electricity. The device uses the received energy to charge the battery and at the same time for its own operation. Since energy is transmitted between the charger and the electrical device using a magnetic field, no wires are needed to connect the two, so both the charger and the electrical device can have no exposed conductive contacts.
3. The entire system consists of two things, one is a transmitter plugged into the socket, and the other is a receiver (technical core) that is integrated into an electronic product and is about the size of a coin. As long as Within a certain range (currently within a distance of 90 cm), electrical energy can be transmitted from the transmitter to the corresponding receiver instantly. ?
4. Basic principle: electromagnetic induction is used, that is, alternating current of a certain frequency in the primary coil generates a certain current in the secondary coil through electromagnetic induction, thereby transferring energy from the transmission end to the receiving end. . At present, the most common charging solution uses electromagnetic induction. In fact, there is not much mystery in the technical implementation of electromagnetic induction solutions. China's local BYD Company applied for non-contact induction charging as early as December 2005. The device patent uses electromagnetic induction technology.