Mobile wireless charging technology comes from wireless power transmission technology. Wireless charging, also called induction charging, non-contact inductive charging, is a device that uses the near field induction, that is, inductor coupling, to transfer energy to electricity by the power supply device (charger). The device uses received energy to charge the battery, and it is also used by the device itself. Because the charger and the electric device transfer the energy by inductively coupled, there is no wire connection between them, so the charger and the device for electricity use can be exposed to the non conductive contact.
Working principle: using the principle of resonance in physics, two objects with the same vibration frequency can transmit energy efficiently.
1. the electrical energy in the transmission line is passed into the antenna made of copper.
The 2. antenna vibrate at a frequency of 10 MHz, producing electromagnetic waves.
3. the energy emitted by the antenna extends to 2 meters (6.5 feet).
4. the laptop, which also vibrated at a frequency of 10 MHz, receives the current and the energy is charged into the device.
5. no energy converted to laptop will not be re absorbed by the antenna. People and other objects that do not produce 10 MHz resonance will not interfere with it.