POWER RECEPTION DEVICE, ELECTRONIC APPARATUS, AND NON-CONTACT POWER TRANSMISSION SYSTEM
First Claim
1. A power reception device, comprising:
- a first resistance element having one end electrically connected to one end of a secondary coil capable of being electromagnetically coupled to a primary coil of a power transmission device;
a second resistance element having one end electrically connected to an other end of the first resistance element and having an other end being supplied with a reference voltage; and
a power reception control device that obtains a frequency of an alternating current (AC) voltage induced in the secondary coil based on a voltage division signal output from the other end of the first resistance element, and that varies a magnitude of a load of the power reception device in accordance with the frequency,a variable resistance element that varies a registance in accordance with temperature being connected in parallel to the first resistance element or the second resistance element.
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Accused Products
Abstract
A power reception device includes a first resistance element having one end electrically connected to one end of a secondary coil which is able to be electromagnetically coupled to a primary coil of a power transmission devices a second resistance element having one end electrically connected to the other end of the first resistance element and having the other end supplied with a reference voltage, a power reception control device that obtains a frequency of an alternating current (AC) voltage induced on the secondary coil based on a voltage division signal output from the other end of the first resistance element and varies a magnitude of a load of the power reception device in accordance with the frequency, and a variable resistance element that has resistance varied in accordance with temperature and is connected to the first resistance element or the second resistance element in parallel.
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Citations
14 Claims
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1. A power reception device, comprising:
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a first resistance element having one end electrically connected to one end of a secondary coil capable of being electromagnetically coupled to a primary coil of a power transmission device; a second resistance element having one end electrically connected to an other end of the first resistance element and having an other end being supplied with a reference voltage; and a power reception control device that obtains a frequency of an alternating current (AC) voltage induced in the secondary coil based on a voltage division signal output from the other end of the first resistance element, and that varies a magnitude of a load of the power reception device in accordance with the frequency, a variable resistance element that varies a registance in accordance with temperature being connected in parallel to the first resistance element or the second resistance element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification