Power transmission apparatus
First Claim
Patent Images
1. A power transmission apparatus, comprising:
- a power transmitting circuit which transmits power to a first power receiving circuit in a non-contact manner;
a housing which accommodates the power transmitting circuit;
a plurality of second power receiving circuits which is disposed on a sidewall of the housing and receives power from the power transmitting circuit in a non-contact manner;
an electric load which operates with power that the plurality of second power receiving circuits has received;
a switch which is provided in each of the plurality of second power receiving circuits to open and close a circuit of a respective second power receiving circuit of the plurality of second power receiving circuits;
a sensor which detects a received power amount in each of the plurality of second power receiving circuits; and
a controller which controls opening and closing of the switch,wherein the controller opens the switch of the second power receiving circuit having a smallest received power amount, andwherein the second power receiving circuits of the plurality of second power receiving circuits are disposed separately from each other.
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Abstract
The power transmission apparatus includes a power transmitting unit which transmits power to a first power receiving unit in a non-contact manner, a housing which accommodates the power transmitting unit, a second power receiving unit which is disposed on a sidewall of the housing and receives the power from the power transmitting unit in a non-contact manner, and an electric load which operates with power that the second power receiving unit has received. The power transmission apparatus operates only with a leakage magnetic flux and operates of a notification such as a non-contact power supply is in progress.
16 Citations
13 Claims
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1. A power transmission apparatus, comprising:
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a power transmitting circuit which transmits power to a first power receiving circuit in a non-contact manner; a housing which accommodates the power transmitting circuit; a plurality of second power receiving circuits which is disposed on a sidewall of the housing and receives power from the power transmitting circuit in a non-contact manner; an electric load which operates with power that the plurality of second power receiving circuits has received; a switch which is provided in each of the plurality of second power receiving circuits to open and close a circuit of a respective second power receiving circuit of the plurality of second power receiving circuits; a sensor which detects a received power amount in each of the plurality of second power receiving circuits; and a controller which controls opening and closing of the switch, wherein the controller opens the switch of the second power receiving circuit having a smallest received power amount, and wherein the second power receiving circuits of the plurality of second power receiving circuits are disposed separately from each other. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A power transmission apparatus, comprising:
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a power transmitting circuit which is disposed on a plane and transmits power to a first power receiving circuit in a non-contact manner; a second power receiving circuit which is disposed on the plane and receives power from the power transmitting circuit in a non-contact manner; and an electric load which operates with power that the second power receiving circuit has received, wherein the second power receiving circuit is disposed within a predetermined distance from the power transmitting circuit, and the predetermined distance is a distance that the first power receiving circuit is located at a position where power transmission efficiency between the power transmission circuit and the first power receiving circuit is maximized, and the second power receiving circuit receives minimum power with which the electric load enables to operate when the power transmission circuit transmits predetermined power to the first power receiving circuit. - View Dependent Claims (8, 9)
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10. A power transmission apparatus, comprising:
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a power transmitting circuit which is disposed on a plane and transmits power to a first power receiving circuit in a non-contact manner; a plurality of second power receiving circuits which is disposed on the plane and receives power from the power transmitting circuit in a non-contact manner; an electric load which operates with power that the plurality of second power receiving circuits has received; a switch which is provided in each of the plurality of second power receiving circuits to open and close a circuit of a respective second power receiving circuit of the plurality of second power receiving circuits; a sensor which detects a received power amount in each of the plurality of second power receiving circuits; and a controller which controls opening and closing of the switch, wherein the controller opens the switch of the second power receiving circuit having a smallest received power amount, and wherein the second power receiving circuits of the plurality of second power receiving circuits are disposed separately from each other. - View Dependent Claims (11, 12, 13)
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Specification