Power transmission control device, power reception control device, non-contact power transmission system, power transmission device, power reception device, and electronic instrument
First Claim
1. A non-contact power transmission system comprising a power transmission device and a power reception device, the non-contact power transmission system transmitting power from the power transmission device to the power reception device by electromagnetically coupling a primary coil and a secondary coil to transmit the power to a load of the power reception device,the power reception control device including:
- a load modulation section that is used to transmit a signal to the power transmission device; and
a power-reception-side control circuit that controls the power reception device;
the power-reception-side control circuit performing control of transmitting authentication information to the power transmission device by load modulation by controlling an operation of the load modulation section during authentication before normal power transmission is started, the authentication information including information that allows the power reception device to control transmission power during the normal power transmission;
a power-transmission-side control circuit of the power transmission device performing an authentication process based the authentication information that is transmitted from the power reception device to determine whether or not power transmission can be performed before the normal power transmission is started, the power-transmission-side control circuit performing control of the normal power transmission when the power-transmission-side control circuit has determined that power transmission can be performed, and controlling maximum transmission power during the normal power transmission to conform to a rated power of a power-reception-device-side based on the information that is included in the authentication information and allows the power transmission device to control transmission power during the normal power transmission.
1 Assignment
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Accused Products
Abstract
A power reception device transmits authentication information (e.g., start code, manufacturer ID, product ID, rated power information, and resonance characteristic information) to a power transmission device before starting normal power transmission by a non-contact power transmission system. The power transmission device performs instrument authentication based on the received authentication information, and regulates the maximum transmission power is regulated to conform to a power-reception-device side rated power. The power transmission device then performs normal power transmission.
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Citations
12 Claims
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1. A non-contact power transmission system comprising a power transmission device and a power reception device, the non-contact power transmission system transmitting power from the power transmission device to the power reception device by electromagnetically coupling a primary coil and a secondary coil to transmit the power to a load of the power reception device,
the power reception control device including: -
a load modulation section that is used to transmit a signal to the power transmission device; and a power-reception-side control circuit that controls the power reception device; the power-reception-side control circuit performing control of transmitting authentication information to the power transmission device by load modulation by controlling an operation of the load modulation section during authentication before normal power transmission is started, the authentication information including information that allows the power reception device to control transmission power during the normal power transmission; a power-transmission-side control circuit of the power transmission device performing an authentication process based the authentication information that is transmitted from the power reception device to determine whether or not power transmission can be performed before the normal power transmission is started, the power-transmission-side control circuit performing control of the normal power transmission when the power-transmission-side control circuit has determined that power transmission can be performed, and controlling maximum transmission power during the normal power transmission to conform to a rated power of a power-reception-device-side based on the information that is included in the authentication information and allows the power transmission device to control transmission power during the normal power transmission. - View Dependent Claims (2, 3)
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4. A power transmission control device provided in a power transmission device of a non-contact power transmission system, the non-contact power transmission system transmitting power from the power transmission device to a power reception device by electromagnetically coupling a primary coil and a secondary coil to transmit the power to a load of the power reception device, the power transmission control device comprising:
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a power-transmission-side control circuit that controls the power transmission device including a resonant circuit that includes the primary coil, and a capacitor that is connected to the primary coil, the power-transmission-side control circuit performing an authentication process based on authentication information that is transmitted from the power reception device to determine whether or not power transmission can be performed before normal power transmission is started, the power-transmission-side control circuit performing control of the normal power transmission when the power-transmission-side control circuit has determined that power transmission can be performed, and controlling maximum transmission power during the normal power transmission to conform to a rated power of power-reception-device-side by changing resonance characteristics of the resonant circuit based on at least part of the authentication information. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12)
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Specification