With the continuous improvement of the requirements for power supply quality, safety, reliability, convenience, immediacy, special occasions, and special geographical environment, the contact-type power transmission method is increasingly unable to meet actual needs.
The wireless charger is a device that uses the principle of electromagnetic induction for charging. Its principle is similar to that of a transformer. By placing a coil at the transmitting and receiving ends, the transmitting end coil sends an electromagnetic signal to the outside under the action of power, and the receiving end coil receives the electromagnetic signal. Signal and convert electromagnetic signal into electric current, so as to achieve the purpose of wireless charging. Wireless charging technology is a special way of power supply. It does not require a power cord, relies on electromagnetic wave propagation, and then converts electromagnetic wave energy into electrical energy, and finally realizes wireless charging.
New electronic products, especially portable electronic products such as digital cameras, mobile phones, and tablet computers, are being used more and more in people's work and life, and their matching chargers also use traditional wired chargers. However, the compatibility and versatility of wired chargers are relatively poor, and it is inconvenient for users to carry and charge. At the same time, post-disposal treatment increases environmental pollution. Therefore, it is extremely urgent to provide users with more reliable, convenient, convenient and timely charging equipment. The development of wireless technology makes it possible to transmit radio power, and the research and development of wireless chargers will also meet user requirements.
There will be three main forms of battery charging in the future: visual charging, smart charging and wireless charging.
