What is the principle of wireless charging of mobile phones?
★It is simply understood that there is only a way of transmitting energy by magnetic field between the mobile phone wireless charging device and the wirelessly charged mobile phone device. As early as 1831, Faraday discovered the phenomenon of electronic magnetic induction, revealing the relationship between electricity and magnetism. In layman's terms, electricity generates magnetism, and magnetism can also generate electricity. Our current mainstream wireless charging technology, magnetic induction wireless charging technology, uses this technology. In principle, there is a coil on the back of our mobile phone and on the wireless charger. When the coil of the charger is energized, the coil will generate a magnetic field. When we put the mobile phone on the charger, the coil at the position of our mobile phone will be induced. to the magnetic field, resulting in an induced current;

★Oster's current magnetic effect, that is, any wire carrying current can generate a magnetic field around it. This is your wireless charger. After passing through the power adapter, the alternating current will become direct current and enter the wireless charging; radio The charging power full bridge will convert the direct current into alternating current and pass it into the coil of the wireless charging.
When the alternating current passes through the closed wire and the coil, a circular magnetic field will be generated around the coil. The coil in the resonant circuit on the back of the mobile phone will receive the magnetic field of this specific frequency and generate an alternating current through the capacitor in the resonant circuit. The alternating current is rectified by The bridge is then converted into DC current to charge the battery, which is the complete radio charging process.
It is worth noting that the current transmission between devices is a process of electromagnetism, and then to the magnetic field to convert the current, and the distance and the size of the original current will also affect the size of the magnetic force, so most commercial wireless chargers need to be compatible with the current. Mobile phone contact is not really wireless power supply.
♥In the application of Qi wireless charging technology, Chinese mobile phone manufacturers have stood up one after another. Qi is the world's first standardization organization to promote wireless charging technology, namely the Wireless Power Consortium (WPC). This is also the only standard in the world for low-power wireless charging; it has the two characteristics of convenience and versatility. First of all, as long as products of different brands have a Qi logo, they can be charged with Qi wireless chargers.

■Smart wireless charging technology has the following benefits:
① Not subject to line (restriction) restrictions. Charge it anytime, anywhere and keep it full at all times.
② Lighter than a feather, heavier than Mount Tai. Various types of wireless charging devices for mobile phones use a tempered film panel, so that the mobile phone will not slip off during incoming calls and vibrations. The back and bottom rubber surfaces make wireless charging stable.
③ The work and life are not wrong, just put it on the top if you want to charge it, and you can answer incoming calls freely, making the office convenient and fast, eliminating the hassle of plugging the wired charging head into the power socket, and the trouble of plugging in the mobile phone charging interface and electric shock due to improper use. danger.
④There are intelligent charging, intelligent identification of other metal objects or security hidden dangers and temperature detection technology between them.