| 摘要 |
PROBLEM TO BE SOLVED: To provide a core for non-contact power supply capable of achieving high power supply efficiency, high mechanical strength, easy production, and cost reduction.SOLUTION: A core for non-contact power supply used for a power transmission coil or a power reception coil of a non-contact power supply device comprises: a winding core part 81 for winding an electric wire; and magnetic pole core parts 80 for forming magnetic pole parts at the both ends of the winding core part. Heights of the uppermost parts of the ferrite plates 80 disposed on a plane of the side facing a counterpart coil in the magnetic pole core parts are equivalent or higher than that of the outer periphery of the electric wire 50 wound around the winding core part 81, and heights of the ferrite plates disposed on a plane of the side not facing the counterpart coil are lower than that of the outer periphery of the electric wire 50 wound around the winding core part 81. Reduction of a magnetic gap length D2 while holding a mechanical gap length D1 between the coils can enhance a coupling coefficient between the coils, power supply efficiency, and a maximum supply power. |
