Principle of wireless charging


The wireless charging of mobile phones actually uses the principle of electromagnetic induction to generate a changing magnetic field from a changing electric field. The changing magnetic field then generates a changing electric field on the receiving coil of the mobile phone to charge the mobile phone. We can think of this technology as a separate transformer, and we removed the middle magnetizer (iron core). The coil at the transmitting end and the coil at the receiving end are placed in two separate devices. When electric energy is input to the transmitting end coil, a magnetic field is generated. When the magnetic field senses the coil at the receiving end, a current is generated, so that we construct a A set of radio energy transmission systems.


However, because we remove the middle magnetizer, the magnetic field rapidly decreases with the increase of the distance, and the distance that the electric energy can be transmitted is very short. Generally, it can only be in the range of several millimeters to several centimeters. Transmission effect. Therefore, it can only be applied to small wireless charging devices with lower power, such as our mobile phone wireless charger.


Mobile phone wireless charging is a relatively new charging method, the principle is actually very simple, is to separate the main transformer secondary and secondary to achieve wireless purposes. Of course, the wireless charging frequency is relatively high, and even the core can be discarded directly between the coils to achieve energy transfer.


1. Put the wireless charging function on the wireless charging board. The position should be set and you can charge it. Note that some wireless charging panels support different models of mobile phones. You should select the wireless charging panel according to your mobile phone model.


2, currently does not support long-distance charging, may reach this technology in the future, what is wireless charging technology, according to a report in the United States, there have been research institutions have developed a wireless charger that can be long distance, this charger contains A transmitter with a plug, an electronic receiver, can be transmitted to the terminal device equipped with the receiver as long as it is within a certain range.


3. The wireless charger transmits by radio waves. The radio wave is not only an electromagnetic wave, but also transmits energy itself and can penetrate the air, thus making wireless power transmission possible.

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