| 摘要 |
A noncontact power transmitting apparatus which makes it possible to rapidly charge a secondary cell of a part to be charged with large electric power and realize a lightweight and compact part to be charged. A power-transmitting coil of a charging part is divided into two sets, and the power-transmitting coils of the sets are respectively wound around cores, and are formed as a first power-transmitting coil portion 26 and a second power-transmitting coil portion 27 which are separate and independent as the two sets. Meanwhile, a power-receiving coil of a part to be charged is wound around a core, and is formed as a single power-receiving coil portion 28. In a chargeable state in which the part to be charged is placed on the charging part, the power-receiving coil portion 28 is inserted in a space between the first power-transmitting coil portion 26 and the second power-transmitting coil portion 27, and the first power-transmitting coil portion 26, the power-receiving coil portion 28, and the second power-transmitting coil portion 27 are arranged in such a manner as to be aligned with each other. Windings are wound such that the polarities of the windings are adjusted so that the directions of magnetic fluxes phi 1 and phi 2, which penetrate from the first power-transmitting coil portion 26 and the second power-transmitting coil portion 27 through the power-receiving coil portion 28, are constantly set in the same direction.
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