Mobile phone wireless charging refers to the meaning that the charger and the electrical device can be connected to the phone without wires.
Wireless charging, also known as inductive charging, non-contact inductive charging, from the wireless power transmission technology, is the use of near-field induction, that is, inductive coupling, by the power supply equipment (charger) to transmit energy to the installation of electricitystrong> is the principle of "current magnetic effect" and "electromagnetic induction". In 1819, Danish scientist Elster observed that if there is an electric current on a wire, a magnetic field will be generated around it, which can deflect the north finger. Later generations have further found that the wire is encircled into a ring, or even wound into a coil, and the magnetic field generated will be stronger and more concentrated, which is called the "current magnetic effect."
Now everyone uses a new way of charging mobile phones, that is wireless charging. So what is the principle of this wireless charger? Wireless charging methods include electromagnetic induction, magnetic resonance, electric field coupling and radioWave transmission and other methods, wireless charging of mobile phones mostly use the principle of electromagnetic induction.
is currently under research and is not yet on the market. Radio wave charging is different from the above two charging methods. By configuring a radio wave transmitter in the power supply and a radio wave receiver in the power receiver, the DC voltage output and input are used to transmit power. Its advantage is that the transmission interval is medium, the transmission speed is fast, the disadvantage is that the stability and security are low, and it requires a certain cost to invest in research and development.
Electromagnetic induction wireless charging principle This wireless charging method is the current market phaseThe principle of wireless charging, which is widely used, depends on the effective conversion of magnetic energy and electric energy. In the charging process, the wireless charging device can directly generate magnetic flux through induction magnets at both ends, and then it can use the linear change of magnetic flux to generate the required electricity, and finally, the device successfully collects electric energy for charging the mobile phone.
Basic principle Wireless charge no current : The use of wireless charge no current electromagnetic induction type, that is, the primary coil of a certain frequency of alternating current, generated in the secondary coil through electromagnetic inductionA certain current, which transfers energy from the transmitting end to the receiving end.