Noncontact power receiving apparatus for electrically-powered vehicle and vehicle including the same
First Claim
1. A noncontact power receiving apparatus for an electrically-powered vehicle, receiving electric power from a power transmission coil transmitting the electric power received from a power supply, the noncontact power receiving apparatus comprising:
- a power reception coil configured to receive electric power transmitted from the power transmission coil;
a rectifier configured to rectify the electric power received by the power reception coil;
a power storage device configured to receive the electric power rectified by the rectifier;
a first relay provided on a path between the power reception coil and the rectifier;
a second relay provided on a path between the rectifier and the power storage device; and
a control unit configured to perform a cutoff confirming operation of the first relay after performing a cutoff confirming operation of the second relay, whereinthe cutoff confirming operation of the second relay includes detecting a voltage on a power transmission path connecting the rectifier and the second relay while commanding the second relay to cut off, andthe cutoff confirming operation of the first relay includes detecting a voltage on a power transmission path connecting the rectifier and the first relay while commanding the first relay to cut off.
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Accused Products
Abstract
A noncontact power receiving apparatus for receiving electric power from a power transmission coil transmitting the electric power received from a power supply includes: a power reception coil for receiving, by means of electromagnetic resonance, electric power transmitted from the power transmission coil; a rectifier for rectifying the electric power received by the power reception coil; a load supplied with the electric power rectified by the rectifier; and a first relay provided on a path over which the electric power is transmitted from the power reception coil to the rectifier, for cutting off the electric power.
46 Citations
13 Claims
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1. A noncontact power receiving apparatus for an electrically-powered vehicle, receiving electric power from a power transmission coil transmitting the electric power received from a power supply, the noncontact power receiving apparatus comprising:
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a power reception coil configured to receive electric power transmitted from the power transmission coil; a rectifier configured to rectify the electric power received by the power reception coil; a power storage device configured to receive the electric power rectified by the rectifier; a first relay provided on a path between the power reception coil and the rectifier; a second relay provided on a path between the rectifier and the power storage device; and a control unit configured to perform a cutoff confirming operation of the first relay after performing a cutoff confirming operation of the second relay, wherein the cutoff confirming operation of the second relay includes detecting a voltage on a power transmission path connecting the rectifier and the second relay while commanding the second relay to cut off, and the cutoff confirming operation of the first relay includes detecting a voltage on a power transmission path connecting the rectifier and the first relay while commanding the first relay to cut off. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An electrically-powered vehicle comprising:
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a noncontact power receiving apparatus that receives electric power from a power transmission coil that transmits the electric power received from a power supply, the noncontact power receiving apparatus including; a power reception coil configured to receive electric power transmitted from the power transmission coil; a rectifier configured to rectify the electric power received by the power reception coil; a power storage device configured to receive the electric power rectified by the rectifier; a first relay provided on a path between the power reception coil and the rectifier; a second relay provided on a path between the rectifier and the power storage device; and a control unit configured to perform a cutoff confirming operation of the first relay after performing a cutoff confirming operation of the second relay; and a motor coupled to the power storage device so as to be driven by power from the noncontact power receiving apparatus, wherein the cutoff confirming operation of the second relay includes detecting a voltage on a power transmission path connecting the rectifier and the second relay while commanding the second relay to cut off, and the cutoff confirming operation of the first relay includes detecting a voltage on a power transmission path connecting the rectifier and the first relay while commanding the first relay to cut off. - View Dependent Claims (13)
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Specification