TWI568124B - Supplying adiabatic circuit by wireless power transfer system - Google Patents

Description

Wireless power transmission system for supplying adiabatic circuit operation

The present invention relates to a power transmission system, and more particularly to a wireless power transfer (WPT) system including an adiabatic circuit.

The wireless power transmission system is capable of generating a magnetic field and transmitting energy through an induction coil without using wire or conductor contact, and is often used in radio frequency identification and wireless charging devices. On the other hand, the adiabatic circuit is a low-power circuit architecture that uses AC power instead of conventional DC power to lengthen the charging and discharging time of circuit components to reduce thermal energy consumption and recycle the capacitance stored in the circuit node. The energy on. Therefore, the adiabatic circuit has characteristics of low energy consumption and slow operation speed.

Therefore, how to combine the wireless power transmission system with the adiabatic circuit and reduce the energy loss caused by the AC-DC power conversion, so as to increase the application level of the adiabatic circuit is one of the important issues today. In general, wireless power transmission systems typically include Complementary Metal-Oxide Semiconductor (CMOS) circuits. In the prior art, if the wireless power transmission system uses a conventional static CMOS circuit, the system architecture needs to include rectification, voltage regulation, boosting, etc., all of which add additional power consumption.

The invention provides a wireless power transmission system capable of reducing energy loss.

The wireless power transmission system of the present invention includes a power supply side and a power receiving side. The power supply side is used to provide wireless power. The power receiving side is electrically connected to the power supply side. The power receiving side is for receiving wireless power and converting the wireless power into a desired form of power. The power receiving side includes an adiabatic circuit that operates on alternating current power. The adiabatic circuit includes a first circuit and a second circuit. When the first circuit operates in one of the operating time and the waiting time, the second circuit operates in the other of the operating time and the waiting time.

Based on the above, in an exemplary embodiment of the present invention, the wireless power transmission system includes an adiabatic circuit. The power supply side provides the power required by the adiabatic circuit in a wireless charging manner to reduce the energy loss caused by the power conversion.

The above described features and advantages of the invention will be apparent from the following description.

The invention is illustrated by the following examples, but the invention is not limited to the illustrated embodiments. Further combinations are also allowed between the embodiments. The terms "coupled", "connected" and "electrically connected" as used throughout the specification (including the scope of the claims) may be used in any direct or indirect connection. For example, if the first device is described as being coupled to the second device, it should be construed that the first device can be directly connected to the second device, or the first device can be connected through other devices or some kind of connection means. Connected to the second device indirectly. In addition, the term "signal" may refer to at least one current, voltage, charge, temperature, data, electromagnetic wave or any other one or more signals.

FIG. 1 is a schematic diagram of a wireless power transmission system according to an embodiment of the present invention. Referring to FIG. 1, the wireless power transmission system 100 of the present embodiment includes a power supply side 110 and a power receiving side 120. The power receiving side 120 is electrically connected to the power supply side 110. The power supply side 110 is for providing wireless power to the power receiving side 120. The power receiving side 120 is configured to receive wireless power and convert the wireless power into a desired form of power. In the present embodiment, the required form of power includes, for example, at least one of alternating current power and direct current power. In the present embodiment, the wireless power transmission system 100 generates a magnetic field and transmits power through the induction coil without using wire or conductor contact, which can be applied, for example, to radio frequency identification and wireless charging devices (eg, inductive charging mobile phones, In implantable medical devices, etc.).

Specifically, in the present embodiment, the power supply side 110 includes a power amplifier circuit 112. The power receiving side 120 includes an adiabatic circuit 122, a non-adiabatic circuit 124, and a power conversion circuit 126. In the present embodiment, the input signal Vin received by the power amplifier circuit 112 is, for example, a radio frequency signal, but the invention is not limited thereto. The resistor Rs is the internal resistance of the power amplifier circuit 112, and its transmission frequency is the resonance frequency of the capacitor C1 and the inductor L1. The inductance L1 produces an inductance loss that is less than the loss of the resistor Rs in the power amplifier circuit 112. k is the coupling coefficient of the inductor L1 and the inductor L2. The larger the k value is, the stronger the connection between the two inductors is, and the value is affected by the distance between the two and the type of the medium.

In the present embodiment, the inductance L2 of the power conversion circuit 126 serves as an induction coil for receiving wireless power supplied from the power supply side 110, and converts the wireless power into different power forms for transmission to the adiabatic circuit 122 and the non-adiabatic circuit 124. . In the present embodiment, the adiabatic circuit 122 operates, for example, in alternating current power. For example, the thermal insulation circuit 122 of the present embodiment is, for example, a low-power circuit architecture that uses AC power instead of DC power to lengthen the charging and discharging time of circuit components, thereby reducing energy consumption and recycling capacitor storage. The energy at the circuit node has the characteristics of low energy consumption and slow operation speed. In the present embodiment, the non-adiabatic circuit 124 converts alternating current power into direct current power and operates on direct current power. In an embodiment, the non-adiabatic circuit 124 includes, for example, a rectifier circuit for converting AC power to DC power to operate the non-adiabatic circuit 124 at DC power. In this embodiment, the method of converting the alternating current power to the direct current power by the rectifier circuit can be sufficiently taught, suggested, and implemented by the general knowledge in the art, and therefore will not be described again.

In this embodiment, the adiabatic circuit 122 and the non-adiabatic circuit 124 as the load circuit of the power receiving side 120 can be represented by a set of parallel capacitors and resistors, and the capacitance value can be designed to resonate with the inductor L2 and input signals. Vin is on the same frequency. In the present embodiment, the wireless power transmission system 100 is applied, for example, in an implantable medical device, but the invention is not limited thereto. In such an application embodiment, a circuit coupled to inductor L2, such as adiabatic circuit 122, is disposed in the implantable device. The power supply side 110 is a power that is provided outside the human body to supply the implantable device for operation by wireless transmission through the skin. The power receiving side 120 divides the wireless power form provided by the power supply side 110 into DC power and AC power. The non-adiabatic circuit 124 transmits the AC power induced by the inductor L2 through the rectified, DC power to supply a memory circuit in the non-adiabatic circuit 124 or a latch circuit in the adiabatic circuit 122. operating. The alternating current power is supplied to the adiabatic circuit 122 as a form of voltage required for operation. In one embodiment, the alternating current power includes, for example, two sinusoidal clock voltage sources of opposite phase, but the invention is not limited thereto.

Therefore, in the present embodiment, the wireless power transmission system 100 includes the adiabatic circuit 122 directly through the power supply side 110 to supply the power required for the operation of the adiabatic circuit 122 in a wireless charging manner. Through the wireless power transmission, the power supply side 110 directly provides the operation of the power required by the adiabatic circuit 122 to reduce the energy loss caused by the alternating current power to convert the direct current power, so that the adiabatic circuit 122 is, for example, suitable for being applied to an implanted biomedical wafer. .

In one embodiment, the power conversion circuit 126 is coupled to the adiabatic circuit 122, for example, via a switching circuit, and the power receiving side 120 transmits the time during which the switching circuit is turned on to allow the adiabatic circuit 122 to receive the form of the voltage source required for operation.

2 is a schematic diagram of a wireless power transmission system according to another embodiment of the present invention. Referring to FIG. 2, the wireless power transmission system 200 of the present embodiment is similar to the wireless power transmission system 100 of FIG. 1, but the main difference between the two is, for example, that the power receiving side 220 further includes a switching circuit 228. In the present embodiment, the switch circuit 228 is coupled between the power conversion circuit 226 and the adiabatic circuit 222 for selectively transmitting the AC power provided by the power conversion circuit 226 according to the first control signal Ctrl1 and the second control signal Ctrl2. The first circuit 221 or the second circuit 223 is given. For example, when the switching circuit 228 transmits the alternating current power to the first circuit 221, the alternating current power is not transmitted to the second circuit 223. On the other hand, when the switching circuit 228 transmits the alternating current power to the second circuit 223, the alternating current power is not transmitted to the first circuit 221.

Specifically, in the embodiment, the switch circuit 228 includes a plurality of first switches 229_1 and a plurality of second switches 229_2. The first switch 229_1 is coupled between the power conversion circuit 226 and the first circuit 221, and is controlled by the first control signal Ctrl1. The first switch 229_1 is configured to transmit AC power to the first circuit 221 according to the first control signal Ctrl1. The second switch 229_2 is coupled between the power conversion circuit 226 and the second circuit 223, and is controlled by the second control signal Ctrl2. The second switch 229_2 is configured to transmit the AC power to the second circuit 223 according to the second control signal Ctrl2. In the present embodiment, the first switch 229_1 and the second switch 229_2 are implemented by, for example, a transmission gate, but the invention is not limited thereto, and the implementation manner can be sufficiently taught by the general knowledge in the technical field. , recommendations and implementation instructions, so I won't go into details.

In the present embodiment, the first switch 229_1 and the second switch 229_2 implemented by the transfer gate are mainly divided into two types, one of which is caused by the on-resistance of the transistor in the transfer gate. The loss (first energy consumption), and the other energy (second energy consumption) due to the gate capacitance of the transistor when the transmission gate is turned on and off. In the present embodiment, the larger the element size in the transfer gate, the smaller the on-resistance (the smaller the first consumed energy), and the larger the gate capacitance (the second consumed energy is larger). When the first consumed energy is close to the second consumed energy, the total energy consumed by the transfer gate is minimized. In this embodiment, the on-resistances of the p-type gold-oxygen half (pMOS) transistor and the n-type gold-oxygen half (nMOS) transistor in the transfer gate have different values at different operating voltages. In the transfer gate, the pMOS transistor operates at a voltage of 0.5V to 1V (volts), and the closer to 0.5V, the greater the on-resistance. If the channel width of the nMOS transistor is increased, the on-resistance of the pMOS transistor operating near 0.5 V can be made small, and the on-resistance variation of the entire operating voltage range of the transmission gate can be reduced. On the contrary, the operating voltage of the nMOS transistor in the transfer gate is 0V to 0.5V. If the channel width of the pMOS transistor is increased, the on-resistance of the nMOS transistor operating at around 0.5V can be reduced, and the difference in on-resistance of different transistors in the operating voltage range of the transmission gate can be reduced. Therefore, in the embodiment, when the first switch 229_1 and the second switch 229_2 are implemented by the transmission gate, the ratio of the transistor size therein can be adjusted according to actual design requirements, and the invention is not limited thereto.

Therefore, in the embodiment, the switch circuit 228 selectively transmits the AC power provided by the power conversion circuit 226 to the first circuit 221 or the second circuit 223 according to the first control signal Ctrl1 and the second control signal Ctrl2. In the present embodiment, the power conversion circuit 226 transmits the alternating current power to the switch circuit 228 and the non-adiabatic circuit 224, respectively, via the nodes N1, N2, for example. In the present embodiment, the non-adiabatic circuit 224 includes, for example, a rectifier circuit 225 and a memory circuit 227, but the invention is not limited thereto. The rectifier circuit 225 is for converting AC power into DC power and supplying it to the memory circuit 227. The memory circuit 227 operates at, for example, a DC power having a voltage value of 0 V and 1 V as shown in FIG.

In this embodiment, the wireless power transmission system 200 further includes a control circuit for generating the first control signal Ctrl1 and the second control signal Ctrl2 to control the opening or closing of the first switch 229_1 and the second switch 229_2.

3 is a schematic diagram of a control circuit according to an embodiment of the present invention. FIG. 4 is a schematic diagram showing the waveform of AC power according to an embodiment of the present invention. 5 to 7 are waveform diagrams showing operating voltages of different circuit blocks according to an embodiment of the present invention. Referring to FIGS. 2-7, the power conversion circuit 226 of the present embodiment transmits AC power to the switch circuit 228 and the non-adiabatic circuit 224, respectively, via nodes N1, N2, for example. The signal waveform of AC power at nodes N1 and N2 is as shown in FIG. In the present embodiment, the AC power includes a first AC signal Va and a second AC signal Vb, which are respectively transmitted to the switch circuit 228, the non-adiabatic circuit 224, and the control circuit 300 via nodes N1, N2, respectively.

In this embodiment, the control circuit 300 is configured to compare the voltage values of the first alternating current signal Va and the second alternating current signal Vb to generate the first control signal Ctrl1 and the second control signal Ctrl2. When the voltage value of the first alternating current signal Va is greater than the voltage value of the second alternating current signal Vb, the control circuit 300 outputs, for example, a first control signal Ctrl1 of logic 1 to turn on the first switch 229_1 of the switch circuit 228, so that the first switch 229_1 AC power is thereby transmitted to the first circuit 221. On the contrary, when the voltage value of the first alternating current signal Va is smaller than the voltage value of the second alternating current signal Vb, the control circuit 300 outputs, for example, a second control signal Ctrl2 of logic 1 to turn on the second switch 229_2 of the switch circuit 228, thereby The switch 229_2 accordingly transfers the alternating current power to the second circuit 223. Therefore, in the embodiment, the control circuit 300 determines the timings at which the first switch 229_1 and the second switch 229_2 are turned on and off, for example, according to the magnitudes of the voltage values of the first alternating current signal Va and the second alternating current signal Vb. Therefore, in the present embodiment, the first circuit 221, the second circuit 223, and the memory circuit 227 operate, for example, the voltage waveforms illustrated in FIGS. 5 to 7, respectively. The first circuit 221 operates, for example, on the AC power VDD1, VSS1 waveform (half-period sine wave) as shown in FIG. The second circuit 223 operates, for example, on the AC power VDD2, VSS2 waveform (half-period sine wave) as shown in FIG. The memory circuit 227 operates, for example, in the DC power VDD3, VSS3 waveforms as shown in FIG. In the waveform diagrams shown in FIG. 5 to FIG. 7 , the voltage level values 0 V, 0.5 V, and 1 V are for illustrative purposes only, and the invention is not limited thereto.

FIG. 8 is a schematic diagram showing the internal structure of the comparator circuit of the embodiment of FIG. 3. FIG. 9 is a schematic diagram showing the internals of a pulse generator circuit of the embodiment of FIG. 3. Please refer to FIG. 3, FIG. 8 and FIG. 9. FIG. 8 is a schematic diagram of an internal circuit of the comparator circuit 312, for example. The internal circuit architecture of comparator circuit 314 can be analogous, and the two can be the same or different. The internal circuit diagram of pulse generator circuit 322 is shown in FIG. The internal circuit architecture of pulse generator circuit 324 may be the same or different when so.

In this embodiment, when the voltage value of the first alternating current signal Va is greater than the voltage value of the second alternating current signal Vb, the output signal Vout of the comparator circuit 312 is charged to the voltage VDD. When the voltage value of the first alternating current signal Va is smaller than the voltage value of the second alternating current signal Vb, the output signal Vout will follow the waveform of the first alternating current signal Va (that is, a half-period sine wave of 0-0.5V), so The output after the phaser 342 has a relatively large delay when it is determined to be a logic 1. The operation of the comparator circuit 314 can be deduced by analogy and will not be described herein. Thus, in the present embodiment, control circuit 300 further includes pulse generator circuits 322, 324 and SR latch circuit 330 to detect the falling edge of the output signals of inverters 342, 344 (falling edges) ) to obtain a more balanced and accurate first control signal Ctrl1 and a second control signal Ctrl2. In the present embodiment, the delay circuit 321 of the pulse generator circuit 322 includes, for example, an odd number of delay cells. In the present embodiment, the manner in which the comparator circuits 312, 314, the pulse generator circuits 322, 324, and the SR latch circuit 330 operate can be adequately taught, suggested, and implemented by the general knowledge in the art, and thus is no longer Narration.

Therefore, in the embodiment, when the voltage value of the first alternating current signal Va is greater than the voltage value of the second alternating current signal Vb, the control circuit 300 outputs, for example, the first control signal Ctrl1 of the logic 1 to control the connection to the first circuit 221. The first switch 229_1 is turned on, and the second switch 229_2 connected to the second circuit 223 is turned off. On the contrary, when the voltage value of the first alternating current signal Va is smaller than the voltage value of the second alternating current signal Vb, the control circuit 300 outputs, for example, the first control signal Ctrl1 of the logic 0 to control the first switch 229_1 of the first circuit 221 to be disconnected and connected. The second switch 229_2 to the second circuit 223 is turned on, so that the first circuit 221 receives a half cycle sigma VDD1 of 0.5V to 1V and a half cycle sine wave VSS1 of 0V to 0.5V, and the second circuit 223 receives a 0.5. A half cycle sine wave VDD2 of V to 1V and a half cycle sine wave VSS2 of 0V to 0.5V.

In the embodiment of FIG. 2, the first circuit 221 and the second circuit 223 each include an energy recovery logic circuit. FIG. 10 is a schematic diagram of an energy recovery logic circuit according to an embodiment of the present invention. 10 is a schematic diagram of an energy recovery logic circuit 400 of the first circuit 221, for example. The internal circuit architecture of the energy recovery logic of the second circuit 223 can be deduced by analogy. Referring to FIG. 2, FIG. 5, FIG. 6 and FIG. 10, the first circuit 221 is taken as an example. The energy recovery logic circuit 400 is operated, for example, on the AC power VDD1 and VSS1 for receiving the input signal Vin1 and according to the AC power VDD1 and VSS1. To generate the output signal Vout1. In this embodiment, referring to FIG. 5 and FIG. 6, when the energy recovery logic circuit 400 of the first circuit 221 operates at the working time T1, the energy recovery logic circuit of the second circuit 223 operates at the waiting time T2. On the contrary, when the energy recovery logic circuit 400 of the first circuit 221 operates at the waiting time T2, the energy recovery logic circuit of the second circuit 223 operates at the operating time T1. In other words, when the first circuit 221 operates in one of the operation time T1 and the waiting time T2, the second circuit 223 operates the other of the operation time T1 and the waiting time T2. In the present embodiment, the working time T1 includes an evaluation phase T11 and a recycle phase T12. The waiting time T2 includes a first waiting phase T21 and a second waiting phase T22.

In addition, referring to the embodiment of FIG. 2 and FIG. 3, the control circuit 300 controls the signal transmission mode of the switch circuit 228. When the first circuit 221 or the second circuit 223 receives the AC power, the first circuit 221 or the second circuit 223 operates. At working time T1. When the first circuit 221 or the second circuit 223 does not receive AC power, the first circuit 221 or the second circuit 223 operates at the waiting time T2.

FIG. 11 is a schematic diagram showing the internal structure of an adiabatic circuit according to an embodiment of the present invention. Referring to FIG. 2 and FIG. 11 , in the thermal insulation circuit 522 of the embodiment, the first circuit 521 and the second circuit 523 are coupled in series and are staggered. A latch circuit 525 is further disposed between the first circuit 521 and the second circuit 523. The first circuit 521 operates on the AC power VDD1, VSS1, and the second circuit 523 operates on the AC power VDD2, VSS2.

Specifically, in the present embodiment, the operating time T1 and the waiting time T2 of the adiabatic circuit 522 each occupy half a cycle, so each circuit block of the pipelining architecture is divided into the first circuit 521 and the phase-to-phase circuit. Different blocks of the second circuit 523 are as shown in FIG. When the first circuit 521 operates during the operation time T1, the second circuit 523 waits at the waiting time T2. On the contrary, when the second circuit 523 operates at the operation time T1, the first circuit 521 waits at the waiting time T2.

In summary, in an exemplary embodiment of the present invention, a wireless power transmission system applies a wireless transmission technique to an operation of providing an adiabatic circuit. Since the adiabatic circuit has low power consumption characteristics, it is suitable for an implanted device circuit in the field of biomedicine, and the adiabatic circuit operates in a different manner from a conventional conventional metal oxide semiconductor circuit. Additionally, in an exemplary embodiment of the invention, the wireless power transfer system uses a form of power transmitted wirelessly that is suitable for operation of the adiabatic circuit. When the adiabatic circuit is applied to an implantable medical device, the device is directly charged outside the human body via a method of wireless power transmission to use AC power for the adiabatic circuit.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100, 200‧‧‧Wireless Power Transmission System
110, 210‧‧‧Power supply side
112, 212‧‧‧Power amplifier circuit
120, 220‧‧‧Power receiving side
122, 222‧‧‧ adiabatic circuits
124, 224‧‧‧ Non-adiabatic circuits
126, 226‧‧‧ power conversion circuit
221, 521‧‧‧ first circuit
223, 523‧‧‧ second circuit
225‧‧‧Rectifier circuit
227‧‧‧ memory circuit
228‧‧‧Switch circuit
229_1‧‧‧First switch
229_2‧‧‧second switch
300‧‧‧Control circuit
312, 314‧‧‧ Comparator circuit
321‧‧‧delay circuit
322, 324‧‧ ‧ pulse generator circuit
330, 525‧‧‧Latch circuit
342, 344‧‧ ‧ Inverter
400‧‧‧Energy recovery logic
Vin, Vin1, Vin2, S1‧‧‧ input signal
Vout, Vout1, Vout2, S2‧‧‧ output signals
Va‧‧ first exchange signal
Vb‧‧‧Second exchange signal
VDD1, VSS1, VDD2, VSS2‧‧‧ AC power
VDD3, VSS3‧‧‧ DC power
Ctrl1‧‧‧First control signal
Ctrl2‧‧‧second control signal
VB, VDD‧‧‧ voltage
Rs, R2‧‧‧ resistance
C1, Cload‧‧‧ capacitor
L1, L2‧‧‧ inductance
k‧‧‧Coupling coefficient
N1, N2‧‧‧ nodes
T1‧‧‧ working hours
T2‧‧‧ Waiting time
T11‧‧‧ calculation stage
T12‧‧‧Recycling phase
T21‧‧‧First waiting phase
T22‧‧‧second waiting phase

FIG. 1 is a schematic diagram of a wireless power transmission system according to an embodiment of the present invention. 2 is a schematic diagram of a wireless power transmission system according to another embodiment of the present invention. 3 is a schematic diagram of a control circuit according to an embodiment of the present invention. FIG. 4 is a schematic diagram showing the waveform of AC power according to an embodiment of the present invention. 5, FIG. 6, and FIG. 7 are waveform diagrams showing operating voltages of different circuit blocks according to an embodiment of the present invention, respectively. FIG. 8 is a schematic diagram showing the internal structure of the comparator circuit of the embodiment of FIG. 3. FIG. FIG. 9 is a schematic diagram showing the internal structure of the pulse generator circuit of the embodiment of FIG. 3. FIG. FIG. 10 is a schematic diagram of an energy recovery logic circuit according to an embodiment of the present invention. FIG. 11 is a schematic diagram showing the internal structure of an adiabatic circuit according to an embodiment of the present invention.

200‧‧‧Wireless Power Transmission System

210‧‧‧Power supply side

212‧‧‧Power amplifier circuit

220‧‧‧Power receiving side

222‧‧‧Adiabatic circuit

224‧‧‧ Non-adiabatic circuits

226‧‧‧Power conversion circuit

221‧‧‧First circuit

223‧‧‧second circuit

225‧‧‧Rectifier circuit

227‧‧‧ memory circuit

228‧‧‧Switch circuit

229_1‧‧‧First switch

229_2‧‧‧second switch

Vin‧‧‧ input signal

Ctrl1‧‧‧First control signal

Ctrl2‧‧‧second control signal

Rs, R2‧‧‧ resistance

C1‧‧‧ capacitor

L1, L2‧‧‧ inductance

k‧‧‧Coupling coefficient

N1, N2‧‧‧ nodes

Claims (10)

A wireless power transmission system includes: a power supply side for providing a wireless power; and a power receiving side electrically connected to the power supply side for receiving the wireless power and converting the wireless power into a The power supply form, wherein the power receiving side includes an adiabatic circuit that operates on an alternating current power, the adiabatic circuit includes a first circuit and a second circuit, and when the first circuit operates for one working time and one waiting time In one of the cases, the second circuit operates at the other of the working time and the waiting time. The wireless power transmission system of claim 1, wherein the power receiving side further comprises: a switching circuit electrically connected to the adiabatic circuit for transmitting the alternating current power to the heat insulation according to the plurality of control signals And a circuit, wherein when the switching circuit transmits the alternating current power to one of the first circuit and the second circuit, the alternating current power is not transmitted to the other of the first circuit and the second circuit. The wireless power transmission system of claim 2, wherein the control signals include a first control signal and a second control signal, the alternating current power comprising a first alternating current signal and a second alternating current signal, and The power receiving side further includes: a control circuit configured to compare the voltage values of the first alternating current signal and the second alternating current signal to generate the first control signal and the second control signal, wherein the first alternating current signal When the voltage value is greater than the second alternating current signal, the switch circuit transmits the alternating current power to the first circuit according to the first control signal, and when the voltage value of the first alternating current signal is less than the second alternating current signal, The switching circuit transmits the alternating current power to the second circuit according to the second control signal. The wireless power transmission system of claim 2, wherein the control signals comprise a first control signal and a second control signal, and the switch circuit comprises: a plurality of first switches electrically connected to the a first circuit for transmitting the alternating current power to the first circuit according to the first control signal; and a plurality of second switches electrically connected to the second circuit for communicating the communication according to the second control signal Power is transferred to the second circuit. The wireless power transmission system of claim 1, wherein the first circuit or the second circuit operates at the working time when the first circuit or the second circuit receives the alternating current power, and when The first circuit or the second circuit operates at the waiting time when the first circuit or the second circuit does not receive the alternating current power. The wireless power transmission system of claim 1, wherein the first circuit and the second circuit each comprise: an energy recovery logic circuit that operates on the alternating current power to receive an input signal, and according to the AC power is generated to generate an output signal, wherein when the energy recovery logic circuit of the first circuit operates in one of the operating time and the waiting time, the energy recovery logic circuit of the second circuit operates at the working time And the other of the waiting times. The wireless power transmission system of claim 1, wherein in the adiabatic circuit, the first circuit and the second circuit are coupled in series and are staggered. The wireless power transmission system of claim 1, wherein the working time comprises a calculating phase and a recycling phase, and the waiting time comprises a first waiting phase and a second waiting phase. The wireless power transmission system of claim 1, wherein the power receiving side further comprises: a non-adiabatic circuit electrically connected to the adiabatic circuit, and the non-adiabatic circuit converting the alternating current power into a direct current power, And operating on the DC power. The wireless power transmission system of claim 1, wherein the power receiving side further comprises: a power conversion circuit electrically connected to the adiabatic circuit for converting the wireless power into the alternating current power and transmitting Give the adiabatic circuit.