Power-transmitting device and wireless power-supplying system
First Claim
1. A power-transmitting device including a voltage converter that converts a voltage and an inverter circuit that converts power input from the voltage converter into AC power, generating a magnetic field on the basis of the AC power output from the inverter circuit, and supplying power to a power-receiving device that rectifies power which is received by a receiving-side pad via the magnetic field and smooths the rectified power using a filter circuit, the power-transmitting device comprising:
- a communication unit that communicates with the power-receiving device; and
a control unit,wherein the communication unit receives, from the power-receiving device, information on the power received by the power-receiving device andwherein the control unit stops the supply of power and causes the communication unit to transmit an instruction for changing at least one of an inductance and a capacitance of an element which is disposed from the receiving-side pad to the filter circuit in the power-receiving device so as to satisfy a condition that the received power approaches a target value when a voltage across an element of the voltage converter or the inverter circuit has reached an upper limit of a withstanding voltage of the element and it is determined that the received power of the power-receiving device has not reached a target value on the basis of the information, andrestarts the supply of power after at least one of the inductance and the capacitance of the element, which is disposed from the receiving-side pad to the filter circuit, is changed.
1 Assignment
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Accused Products
Abstract
When a voltage across an element of a voltage converter or an inverter circuit has reached an upper limit of a withstanding voltage of the element and it is determined that received power of a power-receiving device has not reached a target value, an instruction for changing at least one of inductance and capacitance of an element which is disposed from a receiving-side pad to a filter circuit in the power-receiving device is transmitted from a power-transmitting device to the power-receiving device so as to satisfy a condition that the received power approaches a target value.
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Citations
11 Claims
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1. A power-transmitting device including a voltage converter that converts a voltage and an inverter circuit that converts power input from the voltage converter into AC power, generating a magnetic field on the basis of the AC power output from the inverter circuit, and supplying power to a power-receiving device that rectifies power which is received by a receiving-side pad via the magnetic field and smooths the rectified power using a filter circuit, the power-transmitting device comprising:
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a communication unit that communicates with the power-receiving device; and a control unit, wherein the communication unit receives, from the power-receiving device, information on the power received by the power-receiving device and wherein the control unit stops the supply of power and causes the communication unit to transmit an instruction for changing at least one of an inductance and a capacitance of an element which is disposed from the receiving-side pad to the filter circuit in the power-receiving device so as to satisfy a condition that the received power approaches a target value when a voltage across an element of the voltage converter or the inverter circuit has reached an upper limit of a withstanding voltage of the element and it is determined that the received power of the power-receiving device has not reached a target value on the basis of the information, and restarts the supply of power after at least one of the inductance and the capacitance of the element, which is disposed from the receiving-side pad to the filter circuit, is changed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification