Non-contact power supply system
First Claim
1. A non-contact power supply system comprising:
- a power transmission coil;
a conversion circuit configured to convert power of a transmission side power source and output the power to the power transmission coil;
a power transmission side controller configured to control the conversion circuit, the power transmission side controller being configured to transmit an encoded value by controlling the conversion circuit to output a current pulse to the power transmission coil;
a power reception coil configured to supply power to an electrically connected load by receiving power from the power transmission coil in a non-contact manner by at least a magnetic coupling;
a smoothing circuit configured to smooth the power that is received by the power reception coil;
a sensor configured to detect one of a current that flows in the smoothing circuit and a voltage of the smoothing circuit; and
a power reception side controller configured to receive information from the power transmission side controller by acquiring the encoded value based on a detection value of the sensor,the power reception side controller being configured to acquire the encoded value bymeasuring an elapsed time included between a point in time of a previous rise in the detection value of the sensor and a point in time of a current rise in the detection value, andcomparing the elapsed time and an elapsed time threshold that is set in advance.
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Accused Products
Abstract
A non-contact power supply system has a conversion circuit that converts power of a power transmission-side power supply, and outputs power to a power transmission coil. A power transmission-side controller controls the conversion circuit. A power reception coil receives power from the power transmission coil in a non-contact manner. The power reception coil supplies power to a load electrically connected to the power reception coil. A smoothing circuit smooths power received by the power reception coil. A sensor detects current or voltage in the smoothing circuit. A power reception-side controller acquires an encoded value from a detection value of the sensor. The power transmission-side controller measures an elapsed time between a previous rise and a current rise in a detection voltage that is detected by the sensor, and compares the elapsed time and an elapsed time threshold that is set in advance to acquire the encoded value.
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Citations
7 Claims
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1. A non-contact power supply system comprising:
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a power transmission coil; a conversion circuit configured to convert power of a transmission side power source and output the power to the power transmission coil; a power transmission side controller configured to control the conversion circuit, the power transmission side controller being configured to transmit an encoded value by controlling the conversion circuit to output a current pulse to the power transmission coil; a power reception coil configured to supply power to an electrically connected load by receiving power from the power transmission coil in a non-contact manner by at least a magnetic coupling; a smoothing circuit configured to smooth the power that is received by the power reception coil; a sensor configured to detect one of a current that flows in the smoothing circuit and a voltage of the smoothing circuit; and a power reception side controller configured to receive information from the power transmission side controller by acquiring the encoded value based on a detection value of the sensor, the power reception side controller being configured to acquire the encoded value by measuring an elapsed time included between a point in time of a previous rise in the detection value of the sensor and a point in time of a current rise in the detection value, and comparing the elapsed time and an elapsed time threshold that is set in advance. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification