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The principle of wireless charging
Regardless of the type of wireless charging technology difference how the principles behind them is the well-known phenomenon of electromagnetic induction, specifically, is the use of a changing electric field generates a changing magnetic field, and then take advantage of the changing magnetic field generates an electric field, resulting in the current to charge the device .
We all know that a power wire around a magnetic field generated in the direction perpendicular to the current direction, and under normal circumstances is very weak, but if the wire is wound into a circular or spiral-shaped, it will be superimposed on the magnetic field in the same direction, thereby formation of a strong magnetic field. In fact, wireless charging principle is similar to the transformer common in our lives, are current in another coil current in a coil. Conduction magnetic field different from the transformer core, an induction coil in the wireless charging device after some special adjustments, based on the air conduction medium magnetic field, thereby generating the induced current.
We all know that a power wire around a magnetic field generated in the direction perpendicular to the current direction, and under normal circumstances is very weak, but if the wire is wound into a circular or spiral-shaped, it will be superimposed on the magnetic field in the same direction, thereby formation of a strong magnetic field. In fact, wireless charging principle is similar to the transformer common in our lives, are current in another coil current in a coil. Conduction magnetic field different from the transformer core, an induction coil in the wireless charging device after some special adjustments, based on the air conduction medium magnetic field, thereby generating the induced current.
At the same time, and the resonance of the sound, the two induction coil also need to set a resonance frequency so that the frequency of the receiver coil and the output coil, and thus in the case of small output coil current can also be generated in the receiving coil is strong enough induction current.
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