Power transmitting device and power receiving device
First Claim
1. A power transmitting device that transmits electric power in a non-contact manner to a power receiving device provided outside, comprising:
- a power transmitting coil that forms a magnetic field when an AC voltage is applied thereto, and transmits electric power in a non-contact manner to a power receiving coil of said power receiving device through said magnetic field;
a foreign object detector that detects a foreign object located on or in the vicinity of said power transmitting device;
a magnetic field detector that detects said magnetic field; and
a control device that receives information about a result of the detection of a foreign object by said foreign object detector and information about a result of the detection of said magnetic field by said magnetic field detector,said control device determining whether there is a foreign object or not based on the result of the detection of a foreign object performed by said foreign object detector during a timing period when the strength of said magnetic field that is detected by the magnetic field detector while electric power transmission is being performed is equal to or lower than a prescribed value.
1 Assignment
0 Petitions
Accused Products
Abstract
A power transmitting device includes a power transmitting coil that forms a magnetic field when an AC voltage is applied thereto and transmits electric power in a non-contact manner to a power receiving coil through the magnetic field, a foreign object detector, a magnetic field detector, and a control device that receives information about a result of detection of a foreign object by the foreign object detector and information about a result of detection of the magnetic field by the magnetic field detector. The control device determines whether there is a foreign object or not based on the result of the detection of a foreign object performed by the foreign object detector during a timing period when the strength of the magnetic field is equal to or lower than a prescribed value.
50 Citations
16 Claims
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1. A power transmitting device that transmits electric power in a non-contact manner to a power receiving device provided outside, comprising:
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a power transmitting coil that forms a magnetic field when an AC voltage is applied thereto, and transmits electric power in a non-contact manner to a power receiving coil of said power receiving device through said magnetic field; a foreign object detector that detects a foreign object located on or in the vicinity of said power transmitting device; a magnetic field detector that detects said magnetic field; and a control device that receives information about a result of the detection of a foreign object by said foreign object detector and information about a result of the detection of said magnetic field by said magnetic field detector, said control device determining whether there is a foreign object or not based on the result of the detection of a foreign object performed by said foreign object detector during a timing period when the strength of said magnetic field that is detected by the magnetic field detector while electric power transmission is being performed is equal to or lower than a prescribed value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A power receiving device that receives electric power in a non-contact manner from a power transmitting device provided outside, comprising:
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a power receiving coil that receives electric power in a non-contact manner from a power transmitting coil of said power transmitting device through a magnetic field, said magnetic field being formed by said power transmitting coil when an AC voltage is applied thereto; a foreign object detector that detects a foreign object located below or in the vicinity of said power receiving device; a magnetic field detector that detects said magnetic field; and a control device that receives information about a result of the detection of a foreign object by said foreign object detector and information about a result of the detection of said magnetic field by said magnetic field detector, said control device determining whether there is a foreign object or not based on the result of the detection of a foreign object performed by said foreign object detector during a timing period when the strength of said magnetic field that is detected by the magnetic field detector while electric power transmission is being performed is equal to or lower than a prescribed value. - View Dependent Claims (16)
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Specification