Moving Object, Wireless Power Feeding System, and Wireless Power Feeding Method
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Abstract
An object is to provide a moving object structure capable of reducing power loss caused when power is supplied from a power feeding device to a moving object by wireless communication. Another object is to provide a moving object structure capable of reducing the strength of a radio wave radiated to the surroundings. Before power is supplied to a moving object, a radio wave for alignment of antennas is output from a power feeding device. That is, radio waves are output from a power feeding device in two stages. In a first stage, a radio wave is output to align positions of antennas of the power feeding device and the moving object. In a second stage, a radio wave is output to supply power from the power feeding device to the moving object.
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Citations
5 Claims
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1. (canceled)
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2. A power receiving device comprising:
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an antenna circuit configured to generate a first electric signal and a second electric signal from a first radio wave and a second radio wave sequentially transmitted from a power feeding device, respectively; a signal processing circuit configured to extract data on a positional relationship between the antenna circuit and the power feeding device, using the first electric signal; a secondary battery configured to store electric energy using the second electric signal; an oscillator circuit configured to generate a signal having a certain frequency; and a modulation circuit configured to apply a voltage to the antenna circuit in accordance with a start signal and the signal having the certain frequency, wherein the start signal is generated in the signal processing circuit. - View Dependent Claims (3, 4, 5)
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Specification