POWER SUPPLY DEVICE, POWER RECEIVING DEVICE, AND CHARGING SYSTEM
First Claim
1. A power supply apparatus that is to be disposed on a ground side and that supplies power using an electromagnetic force to a power receiving apparatus disposed on a vehicle, the power supply apparatus comprising:
- a power supply section including a spiral coil or a solenoid coil;
a frequency characteristic acquiring section that acquires a frequency characteristic for efficiency of power supply performed from the power supply section to the power receiving apparatus;
a peak determining section that determines a peak in the frequency characteristic for the efficiency of power supply; and
a drive frequency determining section that determines, when two peaks are determined, a frequency in the vicinity of a lower frequency of frequencies at the two peaks to be a drive frequency preferentially over a frequency in the vicinity of a higher frequency, the drive frequency being used for the power supply.
2 Assignments
0 Petitions
Accused Products
Abstract
Power supply device is provided with the following: a power supply unit (121) that includes a spiral coil or a solenoid coil; a frequency characteristic acquisition unit (211) that acquires the frequency characteristics of the efficiency of the supply of power from the power supply unit to the power receiving device; a peak determining unit (212) that determines peaks in the frequency characteristics of the efficiency of power supply; and a drive frequency determination unit (213) that, if two peaks have been found, determines as the drive frequency used for supplying power a frequency near the frequency that is the lower of the frequencies of the two peaks, with the lower frequency being given priority over a frequency near the higher frequency.
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Citations
14 Claims
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1. A power supply apparatus that is to be disposed on a ground side and that supplies power using an electromagnetic force to a power receiving apparatus disposed on a vehicle, the power supply apparatus comprising:
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a power supply section including a spiral coil or a solenoid coil; a frequency characteristic acquiring section that acquires a frequency characteristic for efficiency of power supply performed from the power supply section to the power receiving apparatus; a peak determining section that determines a peak in the frequency characteristic for the efficiency of power supply; and a drive frequency determining section that determines, when two peaks are determined, a frequency in the vicinity of a lower frequency of frequencies at the two peaks to be a drive frequency preferentially over a frequency in the vicinity of a higher frequency, the drive frequency being used for the power supply. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A charging system comprising:
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a power supply apparatus to be disposed on a ground side; and a power receiving apparatus that is to be disposed on a vehicle and that receives power supplied from the power supply apparatus using an electromagnetic force, wherein the power receiving apparatus includes; a power receiving section including a spiral coil or solenoid coil that receives the power supplied from the power supply apparatus; and a storage battery that stores the power received by the power receiving section, and the power supply apparatus includes; a power supply section that includes a spiral coil or solenoid coil; a frequency characteristic acquiring section that acquires a frequency characteristic for efficiency of power supply performed from the power supply section to the power receiving section; a peak determining section that determines a peak in the frequency characteristic for the efficiency of power supply; and a drive frequency determining section that determines, when two peaks are determined, a frequency in the vicinity of a lower frequency of frequencies at the two peaks to be a drive frequency preferentially over a frequency in the vicinity of a higher frequency, the drive frequency being used for the power supply.
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Specification