| 摘要 |
The present invention relates to a wireless charging device for wirelessly charging a battery of a mobile terminal by using a resonance coupling method in an XYZ coordinate system. The wireless charging device comprises: a first coil unit including a first capacitance component and a first inductance component, and formed in a spiral shape on an XY plane; and a second coil unit electrically connected to the first coil unit, including a second capacitance component and a second inductance component, having a three-dimensional shape towards a Z axis direction, and formed in a spiral shape. An equivalent capacitance obtained by equivalently calculating a first capacitance and a second capacitance and an equivalent inductance obtained by equivalently calculating a first inductance and a second inductance constitute a resonance frequency matching with a resonance frequency of the battery. |
