Power transmission control device, power transmitting device, electronic instrument, and non-contact power transmission system
First Claim
1. A power transmission control device that controls power transmission of a power transmitting device of a non-contact power transmission system, the non-contact power transmission system transmitting power from the power transmitting device to a power receiving device by electromagnetically coupling a primary coil and a secondary coil, and supplying the power to a load of the power receiving device, the power transmission control device comprising:
- a driver control circuit that controls a power transmitting driver that drives the primary coil;
a load state detection circuit that detects a power-receiving-side load state; and
a control circuit that controls the power transmission control device,the control circuit acquiring a reference value in a reference value acquisition period, the reference value being used to determine the power-receiving-side load state after starting normal power transmission, the reference value acquisition period being a period after receiving ID authentication information from the power receiving device, but before starting the normal power transmission.
1 Assignment
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Accused Products
Abstract
A power transmission control device provided in a power transmitting device of a non-contact power transmission system includes a driver control circuit that controls a power transmitting driver that drives a primary coil, a load state detection circuit that detects a power-receiving-side load state, and a control circuit that controls the power transmission control device. The control circuit acquires a reference value used to determine a power-receiving-side load state after starting normal power transmission in a reference value acquisition period, the reference value acquisition period being a period after receiving ID authentication information from the power receiving device, but before starting the normal power transmission.
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Citations
14 Claims
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1. A power transmission control device that controls power transmission of a power transmitting device of a non-contact power transmission system, the non-contact power transmission system transmitting power from the power transmitting device to a power receiving device by electromagnetically coupling a primary coil and a secondary coil, and supplying the power to a load of the power receiving device, the power transmission control device comprising:
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a driver control circuit that controls a power transmitting driver that drives the primary coil; a load state detection circuit that detects a power-receiving-side load state; and a control circuit that controls the power transmission control device, the control circuit acquiring a reference value in a reference value acquisition period, the reference value being used to determine the power-receiving-side load state after starting normal power transmission, the reference value acquisition period being a period after receiving ID authentication information from the power receiving device, but before starting the normal power transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A non-contact power transmission system comprising a power transmitting device and a power receiving device, the non-contact power transmission system transmitting power from the power transmitting device to the power receiving device by electromagnetically coupling a primary coil and a secondary coil, and supplying the power to a load of the power receiving device,
the power receiving device including: -
a power receiving section that converts an induced voltage of the secondary coil into a direct-current voltage; and a load modulation section that variably changes a load corresponding to transmission data when the power receiving device transmits data to the power transmitting device; and the power transmitting device including; a driver control circuit that controls a power transmitting driver that drives the primary coil; a load state detection circuit that detects a power-receiving-side load state; and a control circuit that controls the power transmission control device, the control circuit acquiring a reference value in a reference value acquisition period, the reference value being used to determine the power-receiving-side load state after starting normal power transmission, the reference value acquisition period being a period after receiving ID authentication information from the power receiving device, but before starting the normal power transmission.
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Specification