Resonance-type non-contact power supply system
AssigneeKabushiki Kaisha Toyota Jidoshokki
InventorsYuichi Taguchi, Atsushi Yamaguchi
Life of this patent
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Abstract
A resonance system that receives power from a power source section is configured by at least a primary resonance coil, a secondary resonance coil, and a load. The output frequency fo of the power source section is set to lie within one of the frequency ranges f1≦fn≦f2, f3≦fo≦f4, . . . , f2n-1≦fo≦f2n. The frequencies f1, f2, f3, f4, . . . , f2n-1, f2n (f1<f2<f3< . . . <f2n-1<f2nare defined such that, if the input impedances of the resonant system at the time of supply of power of the frequencies f1, f2, f3, f4, . . . f2n-1, f2n (f1<f2<f3< . . . <f2n-1<f2n) to the resonant system are represented by Z1, Z2, Z3, . . . , Z2n-1, Z2n, the input impedances satisfy Z1=Z2, Z3=Z4, . . . , Z2n-1=Z2n.
Claims4
A resonance-type non-contact power supply system comprising:
- power supply equipment including a power source section and a primary resonance coil configured to be supplied with power from the power source section;
- and
- power receiving equipment including a secondary resonance coil configured to receive power from the primary resonance coil by magnetic field resonance and a load configured to be supplied with power received at the secondary resonance coil, wherein
- at least the primary resonance coil, the secondary resonance coil, and the load constitute a resonant system,
- the output frequency fo of the power source section is set to lie within one of the frequency ranges f1≦fo≦f2, f3≦fo≦f4, . . . , f2n-123 fo≦f2n,
- the frequencies f1, f2, f3, f4, . . . , f2n-1, f2n (f1<f2<f3< . . . <f2n-1<f2n) are defined such that, if the input impedances of the resonant system at the time of supply of power of the frequencies f1, f2, f3, f4, . . . , f2n-1f2n (f1<f2f3< . . . <f2n-1<f2n) to the resonant system are represented by Z1, Z2, Z3, . . . , Z2n-1, Z2n, the input impedances satisfy Z1=Z2, Z3=Z4, . . . , Z2n-1=Z2n.
Dependencies are inferred from the claim text.