| 摘要 |
PROBLEM TO BE SOLVED: To provide a wireless charging device that allows efficiently charging a small portable device by a portable charger.SOLUTION: A wireless charging device of the present invention is composed of a charger 13 and a portable device 7. The charger 13 has a power-feeding cut core 8 around which a power-feeding coil 9 is wounded, a transmission circuit section 10, and a power supply 12 capable of power feeding, and is housed in a first outer case 11. The portable device 7 has a power-receiving core 2 around which a power-receiving coil 1 is wound, a secondary battery 4 capable of being charged and discharged, a power-receiving circuit section 3, and a system circuit section 5, and is housed in a second outer case 6. The power-receiving core 2 is surrounded by the power-feeding cut core 8, and the power-receiving core 2 and the power-feeding cut core 8 are electromagnetically coupled to each other with the second outer case 6 interposed therebetween. |
