What is the wireless charging principle

Wireless charger is not the traditional charging the power cord is connected to the need to recharge on the terminal equipment of the charger, adopted the latest wireless charging technology, wireless charging technology won 20 patents in 2007, a variety of devices can use a charging stations, mobile phones, MP3 players, electric tools and other power adapter cable charging will not exist. By using the magnetic field generated between the coils, the magic of transmitting electricity, the inductively coupled technology will be a bridge between charging stations and equipment.

Most of the current chargers, such as the iPad and the iPhone, are used directly by wire wires to charge the device's built-in batteries. The advantage of wireless charging technology is convenience and versatility. The downside is inefficiency and energy only. The Apple Dock connector not only provides power, but also synchronizes audio and video files to the device via the USB port. Still, wireless charging technologies will bring improvements to WiFi and battery technology. For devices that do not require data transmission, the new technology will greatly reduce the number of chargers that users need. In addition, by using wireless charging technology, public mobile charging stations will be possible.

What is the principle of wireless charging

One of the first things that can be wirelessly charged is an electric toothbrush, which many friends should be exposed to. In the early 1990 s, wireless charging technology is widely used in various brands of electric toothbrushes, the principle is very simple: on the toothbrush and charging at the bottom of the seat is equipped with a set of induction coil, when they are close to the charging operation can be realized.

The deficiency of this technology is needed equipment and, of course, very close to the charging base, so people also began to develop advanced technologies, implemented by calculating the resonant frequency wireless transmission distance of about one meter or so, enhancing the practicability.

Wireless charging characteristics

1, from the theory, wireless charging technology harmless to the human body, the use of wireless charging is magnetic resonance resonance principle, only in the same frequency resonance transmission between coil, and other devices cannot accept band, in addition, wireless charging technology USES magnetic field itself is harmless to the human body. But wireless charging technology, after all, is a new type of charging technology in source of science and technology of the wireless charger, many people have concerns about wireless charging technology will as wi-fi and cell phone mast just appear, in fact, the technology itself is harmless.

2, wireless charging technology using magnetic resonance between the charger and equipment of the power transmission in the electric field and magnetic field, coil and the capacitor is in resonance between the charger and equipment.

The system can be widely used in the future, such as charging areas for electric cars and the transmission of electricity for computer chips. The charging system, which is developed using the technology, requires only a fiftieth of the time.

4, the conversion has been a lot of people worry about a problem, through the study, at the Massachusetts institute of technology of wireless charging technology loss is lower than the cable charging technology. The conversion rate for wireless charging is a few percentage points higher than that of cable. High conversion is also a key factor in the global adoption of wireless chargers. But the wireless charging technology is also limited by distance, and the future development will require the need to address the precise location of the range of wavelengths and magnetic fields.

The core chip is one of the difficult points in the application of wireless charging technology. Precision radiation range, magnetic field frequency, and other controls are achieved by the chip.