Study Of Wireless Power Technology Battery Charger Based On Loose Coupling Transformer

Wireless Power Technology(WPT) is a new type of power transmission technology,which emerged from the traditional form of power supply,and use the wireless equipment to provide electricity for power.WPT has two main characteristics: First,let electrical power completely isolated with appliances,so that the electrical appliances in the security, flexibility,tightness,aesthetics,such as better as usual; Second,the WPT can transfer all non-metallic material to electricity,Such as water,air,wood,plastic,glass,even soil and so on.Therefore objects can be separated from power, but the transmission technology can not do it impossible.First,this article introduced the wireless power supply's basic theory,focuses on magnetic coupling program; second,analyzed the non-contact power transmission system which was a key of loosely coupled transformer to achieve the structure,and then deducted A loosely coupled transformer mathematical model by the conventional transformer in the mathematical model which on the basis of derivation,by the way it's parameters are worked out;In order to get the most out of power transmission efficiency,We emulate the loose coupling transformer with both sides of the relative position by the ANSYS,and then find out the relationship between the structure of the transformer and the efficiency of the power transmission; At the same time also Li-ion battery and the charging methods are discussed.In the end,this article concludes a power supply program which is the use of the module VOX12P5 loosely coupled transformer, and the realization of the lithium batteries for wireless power supply.