Principle of charger coil
At present, in order to facilitate carrying electronic equipment, such as mobile phone, notebook MP3 and end of charge mainly adopts the AC power supply is connected, the traditional way and the other end is connected to the portable electronic device charging battery charging. There are a lot of bad places, this way first, connector plug frequent easily damaged. Risk also can bring shock. Therefore, at the end of the last century the contactless inductivecharger was born, people invented self-adhesive coils with their clever mind.Self-adhesive coils have portability advantages, low cost and no wires quicklyattention from all walks of life. Therefore, the realization of wireless charging,energy transfer efficiency is high, carry convenient charging system has become one of the research directions. In this paper, we design a simple and practical wireless transmission charger, through wireless transmission energybattery self-adhesive coils. Just put the battery in the charging platform andthe receiving device can charge. The experiment proved. Although invisible system cannot charge, experiments show that although the system still can notcharge in the invisible. But have been able to do multiple school electricalcharge in the same place at the same time charging platform.
The principle and structure of self-adhesive coils of wireless charging systemmainly adopts the wireless charger electromagnetic induction principle,through the coil to achieve energy transfer energy coupling. The system willwork when the input AC power supply through a full bridge rectifier circuit to DC, or directly with the 24 V DC power supply system. After the power supplymanagement module output DC 2 meters high frequency inverter AC supplyactive crystal to the primary winding. Through the two inductance coil coupling energy, current through the secondary coil output DC conversion circuit of thebattery to accept change.
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