The two functions of NFC and wireless charging seem to have nothing to do with each other, and in fact, there is no difference in principle, in essence, they all use the principle of electromagnetic induction.
For example, take the NFC access card for example, the mobile phone can sense the current and encrypted data in the card, the card does not need additional power, and the data exchange of this part of the communication is provided by the electromagnetic field established by the NFC component.
Wireless charging is to multiply the power of this part of the electromagnetic induction, and reduce the frequency of the electrical signal, so that the overall function of the signal transmission is weakened, transformed into a power orientation.
Therefore, the idea of putting NFC and wireless charging functions together has been around for a long time, but it has been subject to the limitations of the NFC Association and the Qi wireless charging standard, and there has been no commercial argument. The NFC Forum took the initiative to obtain wireless charging approval on the device, finding a balance between communication and power, so that NFC technology can both transmit data and be used for wireless charging. But don't get too excited, for now, this agreement is only supported. 0.25 watt, 0.5 watt, 0.75 watt and 1 watt four gear wireless charging... Wireless charging faster than 40 watts, this 1 watt is really not enough to plug the teeth ah...