CIRCUIT WITH BOTH FUNCTIONS OF WIRELESS POWER TRANSMITTER AND WIRELESS POWER RECEIVER AND DEVICE THEREOF
First Claim
1. A circuit with both functions of wireless power transmitter and wireless power receiver, comprising:
- a transceiver coil, comprising a first terminal and a second terminal;
a resonant capacitor, comprising a first terminal and a second terminal, wherein the first terminal of the resonant capacitor is coupled to the second terminal of the transceiver coila first switch, comprising a first terminal, a second terminal and a control terminal, wherein the first terminal of the first switch is coupled to a first common terminal, the second terminal of the first switch is coupled to the first terminal of the transceiver coil;
a second switch, comprising a first terminal, a second terminal and a control terminal, wherein the first terminal of the second switch is coupled to the first terminal of the transceiver coil, the second terminal of the second switch is coupled to a common voltage, and the control terminal of the second switch is coupled to the second terminal of the resonant capacitor;
a third switch, comprising a first terminal, a second terminal and a control terminal, wherein the first terminal of the third switch is coupled to the first common terminal, and the second terminal of the third switch is coupled to the second terminal of the resonant capacitor;
a fourth switch, comprising a first terminal, a second terminal and a control terminal, wherein the first terminal of the fourth switch is coupled to the second terminal of the resonant capacitor, the second terminal of the fourth switch is coupled to the common voltage, and the control terminal of the fourth switch is coupled to the first terminal of the transceiver coil;
a communication circuit, coupled to the first terminal of the transceiver coil and the second terminal of the resonant capacitor; and
a control circuit, coupled to the communication circuit, the control terminal of the first switch and the control terminal of the third switch, wherein the control circuit is for controlling the first switch and the third switch,wherein in an energy output mode, the first common terminal receives a power voltage and the control circuit disables the communication circuit and controls the first switch and the third switch to output the electromagnetic energy,wherein in an energy receiving mode, the control circuit controls the first switch and the third switch as a single-directional conduction elements to perform rectifier to output a rectified voltage to the first common terminal, in addition, the control circuit controls the communication circuit outputting an energy requirement signal through the transceiver coil according to amount of received energy, such that the communication circuit can request an energy requirement to an external energy providing circuit.
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Accused Products
Abstract
A device with both functions of wireless power transmitter and wireless power receiver and a circuit thereof are provided in the present invention. The device with both functions of wireless power transmitter and wireless power receiver and the circuit thereof use the same winding for performing the energy output and the energy receiving function. In addition, in order to use the same winding for performing the energy output and the energy receiving function, the present invention adopts full bridge topology. However, two lower switches are controlled by the resonant circuit when the device is in the energy receiving mode. The upper switches are not only for receiving the power voltage, but also for rectifying the energy received from the winding to output to the device with both functions of wireless power transmitter and wireless power receiver.
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Citations
23 Claims
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1. A circuit with both functions of wireless power transmitter and wireless power receiver, comprising:
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a transceiver coil, comprising a first terminal and a second terminal; a resonant capacitor, comprising a first terminal and a second terminal, wherein the first terminal of the resonant capacitor is coupled to the second terminal of the transceiver coil a first switch, comprising a first terminal, a second terminal and a control terminal, wherein the first terminal of the first switch is coupled to a first common terminal, the second terminal of the first switch is coupled to the first terminal of the transceiver coil; a second switch, comprising a first terminal, a second terminal and a control terminal, wherein the first terminal of the second switch is coupled to the first terminal of the transceiver coil, the second terminal of the second switch is coupled to a common voltage, and the control terminal of the second switch is coupled to the second terminal of the resonant capacitor; a third switch, comprising a first terminal, a second terminal and a control terminal, wherein the first terminal of the third switch is coupled to the first common terminal, and the second terminal of the third switch is coupled to the second terminal of the resonant capacitor; a fourth switch, comprising a first terminal, a second terminal and a control terminal, wherein the first terminal of the fourth switch is coupled to the second terminal of the resonant capacitor, the second terminal of the fourth switch is coupled to the common voltage, and the control terminal of the fourth switch is coupled to the first terminal of the transceiver coil; a communication circuit, coupled to the first terminal of the transceiver coil and the second terminal of the resonant capacitor; and a control circuit, coupled to the communication circuit, the control terminal of the first switch and the control terminal of the third switch, wherein the control circuit is for controlling the first switch and the third switch, wherein in an energy output mode, the first common terminal receives a power voltage and the control circuit disables the communication circuit and controls the first switch and the third switch to output the electromagnetic energy, wherein in an energy receiving mode, the control circuit controls the first switch and the third switch as a single-directional conduction elements to perform rectifier to output a rectified voltage to the first common terminal, in addition, the control circuit controls the communication circuit outputting an energy requirement signal through the transceiver coil according to amount of received energy, such that the communication circuit can request an energy requirement to an external energy providing circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device with both functions of wireless power transmitter and wireless power receiver, comprising:
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a transceiver coil, comprising a first terminal and a second terminal; a resonant capacitor, comprising a first terminal and a second terminal, wherein the first terminal of the resonant capacitor is coupled to the second terminal of the transceiver coil a first switch, comprising a first terminal, a second terminal and a control terminal, wherein the first terminal of the first switch is coupled to a first common terminal, the second terminal of the first switch is coupled to the first terminal of the transceiver coil; a second switch, comprising a first terminal, a second terminal and a control terminal, wherein the first terminal of the second switch is coupled to the first terminal of the transceiver coil, the second terminal of the second switch is coupled to a common voltage, and the control terminal of the second switch is coupled to the second terminal of the resonant capacitor; a third switch, comprising a first terminal, a second terminal and a control terminal, wherein the first terminal of the third switch is coupled to the first common terminal, and the second terminal of the third switch is coupled to the second terminal of the resonant capacitor; a fourth switch, comprising a first terminal, a second terminal and a control terminal, wherein the first terminal of the fourth switch is coupled to the second terminal of the resonant capacitor, the second terminal of the fourth switch is coupled to the common voltage, and the control terminal of the fourth switch is coupled to the first terminal of the transceiver coil; a communication circuit, coupled to the first terminal of the transceiver coil and the second terminal of the resonant capacitor; and a control circuit, coupled to the communication circuit, the control terminal of the first switch and the control terminal of the third switch, wherein the control circuit is for controlling the first switch and the third switch; and a battery circuit, comprising a positive terminal and a negative terminal, wherein the negative terminal of the battery circuit outputs the common voltage, and the positive terminal of the battery circuit outputs a power voltage; wherein in an energy output mode, the first common terminal receives the power voltage and the control circuit disables the communication circuit and controls the first switch and the third switch to output the electromagnetic energy, wherein in an energy receiving mode, the control circuit controls the first switch and the third switch as a single-directional conduction elements to perform rectifier to output a rectified voltage to the first common terminal, in addition, the control circuit controls the communication circuit outputting an energy requirement signal through the transceiver coil according to amount of received energy, such that the communication circuit can request an energy requirement to an external energy providing circuit. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A circuit with both functions of wireless power transmitter and wireless power receiver, comprising:
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a transceiver coil, comprising a first terminal and a second terminal; a resonant capacitor, comprising a first terminal and a second terminal, wherein the first terminal of the resonant capacitor is coupled to the second terminal of the transceiver coil a first switch, comprising a first terminal, a second terminal and a control terminal, wherein the first terminal of the first switch is coupled to a first common terminal, the second terminal of the first switch is coupled to the first terminal of the transceiver coil; a second switch, comprising a first terminal, a second terminal and a control terminal, wherein the first terminal of the second switch is coupled to the first terminal of the transceiver coil, and the second terminal of the second switch is coupled to a common voltage; a third switch, comprising a first terminal, a second terminal and a control terminal, wherein the first terminal of the third switch is coupled to the first common terminal, and the second terminal of the third switch is coupled to the second terminal of the resonant capacitor; a fourth switch, comprising a first terminal, a second terminal and a control terminal, wherein the first terminal of the fourth switch is coupled to the second terminal of the resonant capacitor, and the second terminal of the fourth switch is coupled to the common voltage; a communication circuit, coupled to the first terminal of the transceiver coil and the second terminal of the resonant capacitor; and a control circuit, coupled to the communication circuit, the control terminal of the first switch, the control terminal of the second switch, the control terminal of the third switch and the control terminal of the fourth switch, wherein the control circuit is for controlling the first switch, the second switch, the third switch and the fourth switch, wherein in an energy output mode, the first common terminal receives a power voltage and the control circuit disables the communication circuit and controls the first switch, the second switch, the third switch and the fourth switch to output the electromagnetic energy, wherein in an energy receiving mode, the control circuit controls the first switch, the second switch, the third switch and the fourth switch as a single-directional conduction elements to perform rectifier to output a rectified voltage to the first common terminal, in addition, the control circuit controls the communication circuit outputting an energy requirement signal through the transceiver coil according to amount of received energy, such that the communication circuit can request an energy requirement to an external energy providing circuit. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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Specification