Non-contact power transmitting/receiving system and power receiving device and power transmission device in non-contact power transmitting/receiving system
First Claim
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1. A non-contact power transmitting/receiving system, comprising:
- a power transmission device; and
a vehicle including a battery and a power receiving device that is configured to receive electric power from the power transmission device in a contactless manner and charge the battery, whereinin course of charging the battery with an electric power transmitted from the power transmission device to the power receiving device in a contactless manner, when a power difference between a transmitted power of the power transmission device and a received power of the power receiving device is greater than a reference value, the transmitted power of the power transmission device is reduced compared to the transmitted power when the power difference is equal to or less than the reference value.
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Abstract
A non-contact power transmitting/receiving system calculates a loss Plo as a power difference between a transmitted power Ptr of a power transmission unit of a power transmission device and a received power Pre of a power receiving unit of a power receiving device. The non-contact power transmitting/receiving system sets a smaller value to a target transmitted power Ptr* when the calculated loss Plo is greater than a reference value Ploref, than a value when the calculated loss Plo is equal to or less than the reference value Ploref, and controls a high-frequency power circuit with the set target transmitted power Ptr*.
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Citations
10 Claims
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1. A non-contact power transmitting/receiving system, comprising:
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a power transmission device; and a vehicle including a battery and a power receiving device that is configured to receive electric power from the power transmission device in a contactless manner and charge the battery, wherein in course of charging the battery with an electric power transmitted from the power transmission device to the power receiving device in a contactless manner, when a power difference between a transmitted power of the power transmission device and a received power of the power receiving device is greater than a reference value, the transmitted power of the power transmission device is reduced compared to the transmitted power when the power difference is equal to or less than the reference value. - View Dependent Claims (2, 3, 4)
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5. A power receiving device in a non-contact power transmitting/receiving system, the non-contact power transmitting/receiving system comprising a power transmission device;
- and a vehicle including a battery and the power receiving device that is configured to receive electric power from the power transmission device in a contactless manner and charge the battery,
in course of charging the battery with an electric power transmitted from the power transmission device to the power receiving device in a contactless manner, the power receiving device being configured to send a command to the power transmission device when a power difference between a transmitted power of the power transmission device and a received power of the power receiving device is greater than a reference value to reduce the transmitted power of the power transmission device compared to the transmitted power when the power difference is equal to or less than the reference value. - View Dependent Claims (6, 7)
- and a vehicle including a battery and the power receiving device that is configured to receive electric power from the power transmission device in a contactless manner and charge the battery,
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8. A power transmission device in a non-contact power transmitting/receiving system, the non-contact power transmitting/receiving system comprising the power transmission device;
- and a vehicle including a battery and a power receiving device that is configured to receive electric power from the power transmission device in a contactless manner and charge the battery,
in course of charging the battery with an electric power transmitted from the power transmission device to the power receiving device in a contactless manner, the power transmission device being configured when a power difference between a transmitted power of the power transmission device and a received power of the power receiving device is greater than a reference value to reduce the transmitted power of the power transmission device compared to the transmitted power when the power difference is equal to or less than the reference value. - View Dependent Claims (9, 10)
- and a vehicle including a battery and a power receiving device that is configured to receive electric power from the power transmission device in a contactless manner and charge the battery,
Specification