| 摘要 |
PURPOSE: A contactless charging apparatus, a contactless charging system, and a contactless charging method are provided to charge terminals having various specifications with maximally efficient transmission efficiency by controlling the location and area of a primary coil. CONSTITUTION: An AC-DC transformation unit(102) receives an external AC power source and outputs a direct current voltage. A DC-AC transformation unit(104) receives the direct current voltage and outputs an alternating current to the primary coil(120). A location driving unit(112) transfers the location of the primary coil according to the command of the first controller(110). An area control unit(114) controls the on-off of a switch and changes the area of the primary coil. A first communications unit(118) transmits and receives information to/from a second communication unit(220).
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