Non contact power transfer device and vehicle equipped therewith
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsShinji Ichikawa, Atsushi Mizutani
Life of this patent
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Abstract
A non contact electric power transfer device includes: a self resonant coil; an induction coil capable of transmitting and receiving electric power to and from an induction coil capable of the self resonance coil through electromagnetic induction; and a bobbin that has at least one of the self resonant coil and the induction coil attached thereto, and has an accommodation chamber defined therein and capable of accommodating a device therein.
Claims15
A non contact electric power transfer device comprising:
- a second self resonant coil capable of at least one of transmitting and receiving electric power to and from an opposite, first self resonant coil through magnetic field resonance;
- an induction coil capable of at least one of extracting the electric power that said second self resonant coil has received through electromagnetic induction, and feeding said second self resonant coil with electric power through electromagnetic induction;
- and
- an accommodation chamber capable of accommodating a device therein.
The non contact electric power transfer device according to claim 15, wherein said bobbin as seen axially is smaller in length than said bobbin as seen widthwise.
The non contact electric power transfer device according to claim 15, wherein said device accommodated in said bobbin at said accommodation chamber includes a capacitor connected to said second self resonant coil.
The non contact electric power transfer device according to claim 15, wherein said device accommodated in said bobbin at said accommodation chamber is adapted to be a switching device capable of switching a first state selected in a power reception mode and having said second self resonant coil magnetically coupled with said first self resonant coil through magnetic field resonance, and a second state selected in a non power reception mode and having said second self resonant coil magnetically coupled with said first self resonant coil through resonance less strongly than said first state.
The non contact electric power transfer device according to claim 15, wherein said second self resonant coil includes:
- a wound portion spaced from an outer circumferential surface of said bobbin and wound along said outer circumferential surface of said bobbin;
- and
- a supporting portion connected to said bobbin and capable of supporting said wound portion.
Dependencies are inferred from the claim text.