FIELD: electrical engineering.
SUBSTANCE: according to the invention, the ground side coil unit is provided with: magnetic material plate 12 located adjacent to power transmitting coil 11, which transmits the electrical power of power receiving coil 26 wirelessly; and first filter coil 13 located facing power transmitting coil 11 with plate 12 of magnetic material interposed therebetween. First filter coil 13 is positioned at a position where magnetic flux 13G formed by first filter coil 13, it neutralizes magnetic flux 11G formed by power transmitting coil 11 in plate 12 of the magnetic material.
EFFECT: reduction in heat dissipation losses and an increase in the magnetic flux density in the wireless transmission of energy.
10 cl, 25 dwg
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