Mobile type non-contact power feeding device
First Claim
1. An apparatus for non-contact feeding of power by electromagnetic induction, the apparatus comprising:
- a crossover coil serving as a stationary power transmission coil of a power feeding circuit; and
a power receiving coil of a power receiving circuit; and
wherein said non-contact feeding of power by electromagnetic induction is from said power transmission coil to said power receiving coil;
wherein the power receiving coil is arranged to move relative to the stationary power transmission coil through an air gap, the power receiving coil comprising a flat loop;
wherein the crossover coil has an array of a plurality of flat loops elongated in a direction of movement, each one loop of the plurality of flat loops being separated from each other by a crossover, each one loop of the plurality of flat loops of the crossover coil being a unit; and
wherein crossovers of the crossover coil effect a reversal of direction of a magnetic field being generated by the units between a plus direction and a minus direction from each one unit to each next unit of the units of the crossover coil.
1 Assignment
0 Petitions
Accused Products
Abstract
A non-contact power feeding device feeds power from a power transmission coil to a power receiving coil based on a mutual induction effect of electromagnetic induction. In such a non-contact power feeding device, power can be fed to the power receiving coil by a mobile power feeding method whereby the power receiving coil is moved corresponding to the stationary power transmission coil through an air gap in the case of power feeding. The power transmission coil and the power receiving coil are respectively formed in a loop-shaped flat structure. A crossover coil is adopted to serve as the power transmission coil. The crossover coil is formed in a long loop shape along the direction of movement of the power receiving side and is crossed along the way to provide a plurality of units. It is however to be noted that a resonant repeating coil can be used together with the power transmission coil to adopt the crossover coil as its repeating coil.
-
Citations
15 Claims
-
1. An apparatus for non-contact feeding of power by electromagnetic induction, the apparatus comprising:
-
a crossover coil serving as a stationary power transmission coil of a power feeding circuit; and a power receiving coil of a power receiving circuit; and wherein said non-contact feeding of power by electromagnetic induction is from said power transmission coil to said power receiving coil; wherein the power receiving coil is arranged to move relative to the stationary power transmission coil through an air gap, the power receiving coil comprising a flat loop; wherein the crossover coil has an array of a plurality of flat loops elongated in a direction of movement, each one loop of the plurality of flat loops being separated from each other by a crossover, each one loop of the plurality of flat loops of the crossover coil being a unit; and wherein crossovers of the crossover coil effect a reversal of direction of a magnetic field being generated by the units between a plus direction and a minus direction from each one unit to each next unit of the units of the crossover coil. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. An apparatus for non-contact feeding of power by electromagnetic induction, the apparatus comprising:
-
a stationary power transmission coil of a power feeding circuit; and a power receiving coil of a power receiving circuit; and wherein said non-contact feeding of power by electromagnetic induction is from said power transmission coil to said power receiving coil; wherein the power receiving coil is arranged to move relative to the stationary power transmission coil through an air gap; wherein the power receiving coil and the power transmission coil each comprises a flat loop; wherein a repeating coil of a repeating circuit is fixedly disposed relative to the power transmission coil, the repeating circuit being independent of the power feeding circuit, the repeating coil resonating with a capacitor disposed in the repeating circuit; wherein the power receiving coil is arranged to move relative to the repeating coil through the air gap for power feeding; wherein the repeating coil is a crossover coil having an array of a plurality of flat loops elongated in a direction of said movement; wherein each one loop of the plurality of flat loops is separated from each other by a crossover, each one loop of the plurality of flat loops of the crossover coil being a unit; and wherein a direction of a magnetic field being generated by units formed by crossovers of the crossover coil is alternately reversed in a plus direction and a minus direction. - View Dependent Claims (8, 9, 10, 11, 12, 13)
-
-
14. An apparatus for non-contact feeding of power by electromagnetic induction, the apparatus comprising:
-
a plurality of stationary coils of a power feeding circuit, each one of the plurality of stationary coils comprising a plurality of flat loops elongated in a common first direction and being delimited from an adjacent one of the plurality of stationary coils by a crossover, the plurality of stationary coils formed by a common conductor and together forming a stationary power transmission coil; and a power receiving coil of a power receiving circuit configured to move in said first direction through an air gap, said movement being relative to the stationary power transmission coil, the power receiving coil comprising a flat loop, said non-contact feeding of power by electromagnetic induction being from said stationary power transmission coil to said moving power receiving coil; and wherein each crossover between adjacent ones of the plurality of stationary coils effects a reversal of direction of a magnetic field being generated by said adjacent ones of the plurality of stationary coils between one of a plus direction and a minus direction and another of the plus direction and the minus direction so that adjacent coils of the plurality of stationary coils generate different magnetic field polarity. - View Dependent Claims (15)
-
Specification