A dynamic wireless charging control circuit

Abstract

The utility model provides a kind of dynamic wireless charging control circuit, comprising: transmitting circuit;With the transmitting resonant circuit of transmitting circuit electricity connection;With the receiving resonant circuit corresponding to transmitting resonant circuit;With the receiving circuit of receiving resonant circuit electricity connection;The transmitting circuit outputs alternating voltage to transmitting resonant circuit, transmitting resonant circuit converts the alternating voltage into alternating magnetic field, and magnetic field energy is transmitted to receiving resonant circuit, and receiving resonant circuit converts the magnetic field energy received into electric energy and outputs to receiving circuit, and the receiving circuit is charged for target battery.The utility model scheme can reduce the steady-state error of dynamic wireless charging system, improve system dynamic response speed.

Description

Technical Field

[0001] This utility model relates to the field of charging control technology, and in particular to a dynamic wireless charging control circuit. Background Technology

[0002] Existing wireless charging systems primarily rely on information exchange between the transmitter and receiver to achieve voltage control, requiring communication modules and controllers in both the transmitting and receiving coils. In scenarios involving a large number of transmitting coils, this significantly increases installation costs. Furthermore, communication devices face communication latency and interruption issues in strong magnetic field environments, reducing system stability and reliability.

[0003] In practical applications, Dynamic Wireless Charging (DWPT) systems are affected by multiple sources of uncertainty, including changes in coupling coefficients, load variations, model nonlinearity, uncertainties, unmodeled dynamics, parameter drift, parasitic resistance, and external disturbances. Existing methods mainly rely on controller feedback suppression, which cannot effectively suppress these uncertainties and significantly reduces controller performance.

[0004] Current control methods typically require multiple voltage and current sensors to provide system status information, which increases installation and maintenance costs and raises the risk of control system failure due to sensor malfunction. Utility Model Content

[0005] The technical problem this invention aims to solve is to provide a dynamic wireless charging control circuit. This circuit can reduce the steady-state error of a dynamic wireless charging system and improve the system's dynamic response speed.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: A dynamic wireless charging control circuit includes: Transmitting circuit; The transmitting resonant circuit is electrically connected to the transmitting circuit; The receiving resonant circuit corresponding to the transmitting resonant circuit; The receiving circuit is electrically connected to the receiving resonant circuit; The transmitting circuit outputs an AC voltage to the transmitting resonant circuit, which converts the AC voltage into an AC magnetic field and transmits the magnetic field energy to the receiving resonant circuit. The receiving resonant circuit converts the received magnetic field energy into electrical energy and outputs it to the receiving circuit, which then charges the target battery.

[0007] Optionally, the transmitting circuit includes: The first capacitor connected in parallel with the DC power supply; A full-bridge inverter electrically connected to the first capacitor, wherein the full-bridge inverter is electrically connected to the transmitting resonant circuit; The transmitter controller is electrically connected to the full-bridge inverter; The first capacitor filters the power supply voltage output from the DC power supply and inputs it into the full-bridge inverter. The transmitter controller outputs a pulse voltage signal to the full-bridge inverter. The full-bridge inverter converts the filtered power supply voltage into an AC voltage of the target frequency according to the pulse voltage signal and outputs it to the transmitter resonant circuit.

[0008] Optionally, the full-bridge inverter includes: First field-effect transistor; A second field-effect transistor electrically connected to the drain of the first field-effect transistor; A third field-effect transistor electrically connected to the source of the first field-effect transistor; A fourth field-effect transistor is electrically connected to the source of the second field-effect transistor, and the source of the fourth field-effect transistor is electrically connected to the source of the third field-effect transistor.

[0009] Optionally, the transmission controller includes: A first pulse width modulator electrically connected to the first field-effect transistor; A second pulse width modulator electrically connected to the second field-effect transistor; A third pulse width modulator electrically connected to the third field-effect transistor; The fourth pulse width modulator is electrically connected to the fourth field-effect transistor; The first pulse width modulator, the second pulse width modulator, the third pulse width modulator, and the fourth pulse width modulator are all electrically connected to the first digital signal processor; The first digital signal processor outputs pulse control signals to the first pulse width modulator, the second pulse width modulator, the third pulse width modulator, and the fourth pulse width modulator, respectively, so that the first pulse width modulator outputs a first pulse voltage signal to the first field-effect transistor. The second pulse width modulator outputs a second pulse voltage signal to the second field-effect transistor; The third pulse width modulator outputs a third pulse voltage signal to the third field-effect transistor; The fourth pulse width modulator outputs a fourth pulse voltage signal to the fourth field-effect transistor.

[0010] Optionally, the first digital signal processor includes: Current acquisition circuit; A pulse generation circuit electrically connected to the current acquisition circuit; The current acquisition circuit inputs the phase shift and phase angle of the acquired current to the pulse generation circuit; the pulse generation circuit inputs a first pulse control signal to the first pulse width modulator, a second pulse control signal to the second pulse width modulator, a third pulse control signal to the third pulse width modulator, and a fourth pulse control signal to the fourth pulse width modulator according to the phase shift and phase angle.

[0011] Optionally, the transmitting resonant circuit includes: Second capacitor; A first inductor electrically connected to the second terminal of the second capacitor; A first resistor electrically connected to the first inductor; The first terminal of the second capacitor is connected between the first field-effect transistor and the third field-effect transistor; One end of the first resistor is connected between the second field-effect transistor and the fourth field-effect transistor; The pulse voltage signals output by the first, second, third, and fourth field-effect transistors are filtered by the second capacitor and then input into the first inductor, generating a corresponding alternating magnetic field.

[0012] Optionally, the receiving circuit includes: A third capacitor electrically connected to the target battery; A full-bridge rectifier electrically connected to the third capacitor, the full-bridge rectifier being electrically connected to the receiving resonant circuit; A receiving resonant circuit electrically connected to the full-bridge rectifier; A receiver controller electrically connected to the receiving resonant circuit; The receiving resonant circuit converts magnetic field energy into AC power, which is then input into a full-bridge rectifier. The full-bridge rectifier converts the AC power into DC power, which is then filtered by the third capacitor before being input into the target battery. The receiving controller controls the receiving circuit to be in constant current mode or constant voltage mode by controlling the connection and disconnection of the additional capacitor, based on the voltage of the target battery.

[0013] Optionally, the full-bridge rectifier includes: First rectifier diode; A second rectifier diode electrically connected to the negative terminal of the first rectifier diode; A third rectifier diode electrically connected to the positive terminal of the first rectifier diode; A fourth rectifier diode is electrically connected to the positive terminal of the second rectifier diode, and the positive terminal of the fourth rectifier diode is electrically connected to the positive terminal of the third rectifier diode.

[0014] Optionally, the receiving resonant circuit includes: Fourth capacitor; The second inductor is electrically connected to the second terminal of the fourth capacitor; The second resistor is electrically connected to the second inductor; The first terminal of the fourth capacitor is connected between the second rectifier diode and the fourth rectifier diode; One end of the second resistor is connected between the first rectifier diode and the third rectifier diode.

[0015] Optionally, the receiving controller includes: The fifth capacitor is electrically connected to the receiving resonant circuit; An electronic switch electrically connected to the fifth capacitor; A signal modulator electrically connected to the electronic switch, the signal modulator being electrically connected to a second digital signal processor; The signal modulator outputs a fifth pulse voltage signal to the electronic switch.

[0016] The above-mentioned technical solution of this utility model has at least the following technical effects: The dynamic wireless charging control circuit of this invention comprises: a transmitting circuit; a transmitting resonant circuit electrically connected to the transmitting circuit; a receiving resonant circuit corresponding to the transmitting resonant circuit; and a receiving circuit electrically connected to the receiving resonant circuit. The transmitting circuit outputs an AC voltage to the transmitting resonant circuit, which converts the AC voltage into an AC magnetic field and transmits the magnetic field energy to the receiving resonant circuit. The receiving resonant circuit converts the received magnetic field energy into electrical energy and outputs it to the receiving circuit, which then charges the target battery. This reduces the steady-state error of the dynamic wireless charging system and improves the system's dynamic response speed. Attached Figure Description

[0017] Figure 1 This is an overall schematic diagram of the dynamic wireless charging control circuit of this utility model; Figure 2 This is a schematic diagram of the first digital signal processor of the dynamic wireless charging control circuit of this utility model; Figure 3 This is a schematic diagram of the second digital signal processor in the dynamic wireless charging control circuit of this utility model; Figure 4 This is a schematic diagram of the current acquisition circuit of the dynamic wireless charging control circuit of this utility model. Detailed Implementation

[0018] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0019] like Figure 1 As shown, an embodiment of this utility model proposes a dynamic wireless charging control circuit, comprising: Transmitting circuit; The transmitting resonant circuit is electrically connected to the transmitting circuit; The receiving resonant circuit corresponding to the transmitting resonant circuit; The receiving circuit is electrically connected to the receiving resonant circuit; The transmitting circuit outputs an AC voltage to the transmitting resonant circuit, which converts the AC voltage into an AC magnetic field and transmits the magnetic field energy to the receiving resonant circuit. The receiving resonant circuit converts the received magnetic field energy into electrical energy and outputs it to the receiving circuit, which then charges the target battery.

[0020] In this embodiment, as Figure 1 As shown, the Dynamic Wireless PowerTransfer (DWPT) control circuit includes a transmitting circuit, a transmitting resonant circuit, a receiving circuit, and a receiving resonant circuit. The transmitting resonant circuit and the receiving resonant circuit are arranged correspondingly. The transmitting circuit outputs an AC voltage to the transmitting resonant circuit. The transmitting resonant circuit converts the AC voltage into an AC magnetic field and transmits energy to the receiving resonant circuit. The receiving resonant circuit converts the received energy into electrical energy and outputs it to the receiving circuit, which then charges the target battery.

[0021] The solution of this utility model does not require precise mutual inductance values ​​and bilateral communication. Instead, it establishes a mutual inductance deviation mode and uses phase shift control to adjust the phase shift angle of the transmitter controller, thereby adjusting the output voltage and realizing constant current or constant voltage output of the dynamic wireless charging system.

[0022] like Figure 1 As shown, in an optional embodiment of the present invention, the transmitting circuit includes: With DC power supply The first capacitor in parallel ; With the first capacitor A fully bridge inverter that is electrically connected to a transmitting resonant circuit; The transmitter controller is electrically connected to the full-bridge inverter; Wherein, the first capacitor DC power supply After the output power supply voltage is filtered, it is input to the full-bridge inverter. The transmitter controller outputs a pulse voltage signal to the full-bridge inverter. The full-bridge inverter converts the filtered power supply voltage into an AC voltage of the target frequency according to the pulse voltage signal and outputs it to the transmitter resonant circuit.

[0023] In this embodiment, as Figure 1 As shown, in the transmitting circuit, the first capacitor... With DC power supply Parallel connection, full-bridge inverter and first capacitor The transmitter controller is electrically connected to the full-bridge inverter in parallel, and the first capacitor is connected in parallel. DC power supply After the output power supply voltage is filtered, it is input to the full-bridge inverter. The transmitter controller outputs a pulse voltage signal to the full-bridge inverter. The full-bridge inverter converts the filtered power supply voltage into an AC voltage of the target frequency according to the pulse voltage signal and outputs it to the transmitter resonant circuit.

[0024] As shown in Figure 1, in an optional embodiment of the present invention, the full-bridge inverter includes: First field-effect transistor ; With the first field-effect transistor The second field-effect transistor with drain connection ; With the first field-effect transistor The third field-effect transistor with source-electrical connection ; With the second field-effect transistor The fourth field-effect transistor with source-to-electrical connection The fourth field-effect transistor The source and the third field-effect transistor The source electrode is connected.

[0025] In this embodiment, as Figure 1 As shown, the full-bridge inverter includes four field-effect transistors (FETs), the first FET... With the third field-effect transistor Series connection, second field-effect transistor With the fourth field-effect transistor Series connection, first field-effect transistor The drain and the second field-effect transistor The drain connection of the first field-effect transistor The source and the third field-effect transistor The drain connection of the second field-effect transistor The source and the fourth field-effect transistor The drain connection of the fourth field-effect transistor The source and the third field-effect transistor The source terminals are electrically connected; the full-bridge inverter converts the DC power supply... The direct current is converted into alternating current and transmitted to the transmitting resonant circuit.

[0026] like Figure 1 As shown, in an optional embodiment of the present invention, the transmission controller includes: With the first field-effect transistor The first pulse width modulator connected electrically ; With the second field-effect transistor The second pulse width modulator is electrically connected. ; With the third field-effect transistor The third pulse width modulator connected electrically ; With the fourth field-effect transistor The fourth pulse width modulator connected electrically ; First pulse width modulator Second pulse width modulator Third pulse width modulator Fourth pulse width modulator All are electrically connected to the first digital signal processor; The first digital signal processor sends to the first pulse width modulator Second pulse width modulator Third pulse width modulator Fourth pulse width modulator Each outputs a pulse control signal, causing the first pulse width modulator to... To the first field-effect transistor Output the first pulse voltage signal; Second pulse width modulator To the second field-effect transistor Output the second pulse voltage signal; The third pulse width modulator To the third field-effect transistor Output the third pulse voltage signal; The fourth pulse width modulator To the fourth field-effect transistor Output the fourth pulse voltage signal.

[0027] In this embodiment, as Figure 1 As shown, the first pulse width modulator With the first field-effect transistor The gate electrical connection, the second pulse width modulator With the second field-effect transistor The gate electrical connection, the third pulse width modulator With the third field-effect transistor Gate electrical connection, fourth pulse width modulator With the fourth field-effect transistor Gate electrical connection; first pulse width modulator Second pulse width modulator Third pulse width modulator Fourth pulse width modulator All are electrically connected to the first digital signal processor, receive control signals from the first digital signal processor, and control the transmitter controller according to the control signals to put the dynamic wireless charging system into constant current mode or constant voltage mode. First pulse width modulator Second pulse width modulator Third pulse width modulator Fourth pulse width modulator Based on the changing trend of the transmitting circuit current, the first field-effect transistor is controlled separately. Second field-effect transistor Third field-effect transistor Fourth field-effect transistor By turning the inverter on and off at specific frequencies, the frequency of the AC voltage output from the full-bridge inverter is changed, and simultaneously, the frequency of the first field-effect transistor is changed. Second field-effect transistor Third field-effect transistor Fourth field-effect transistor The pulse width at which the inverter is turned on is used to adjust the output voltage of the full-bridge inverter. For example, when the load increases and the current tends to decrease, the duty cycle is increased to raise the output voltage in order to maintain a constant current. In constant voltage mode, the first field-effect transistor is controlled according to the voltage deviation signal. Second field-effect transistor Third field-effect transistor Fourth field-effect transistor By turning the inverter on and off at specific frequencies, the amplitude and phase of the full-bridge inverter's output voltage are changed to compensate for voltage deviations and maintain the output voltage at a constant value.

[0028] like Figure 2 As shown, in an optional embodiment of the present invention, the first digital signal processor includes: Current acquisition circuit; A pulse generation circuit electrically connected to the current acquisition circuit; The current acquisition circuit inputs the phase shift and phase angle of the acquired current to the pulse generation circuit; the pulse generation circuit then outputs the phase shift and phase angle to the first pulse width modulator. Input the first pulse control signal to the second pulse width modulator Input the second pulse control signal to the third pulse width modulator Input the third pulse control signal to the fourth pulse width modulator Input the fourth pulse control signal.

[0029] In this embodiment, as Figure 2 As shown, the first digital signal processor needs to acquire the required transmitter-side current and obtain the first pulse width modulator at the current moment. The phase shift angle, and the phase difference between the transmitting side voltage and current, are used to calculate the phase shift angle corresponding to the next moment in the first digital signal processor; like Figure 4 As shown, the current acquisition circuit includes a comparator and an XOR gate to avoid sampling noise. The acquired current is processed by the comparator to generate a current phase pulse waveform, which is then passed through the XOR gate and modulated by the first pulse width modulator. The phase shift angle is compared to output the phase angle; the first digital signal processor outputs a pulse width modulation control signal based on the calculated phase angle, and the first pulse width modulator... Second pulse width modulator Third pulse width modulator Fourth pulse width modulator The output voltage on the transmitting side is adjusted according to the pulse width modulation control signal to achieve the control target.

[0030] like Figure 1 As shown, in an optional embodiment of the present invention, the transmitting resonant circuit includes: Second capacitor ; With the second capacitor The second terminal is electrically connected to the first inductor ; With the first inductor The first resistor of the electrical connection ; The second capacitor The first end is connected to the first field-effect transistor. and the third field-effect transistor between; The first resistor One end is connected to the second field-effect transistor and the fourth field-effect transistor between; The first field-effect transistor Second field-effect transistor Third field-effect transistor Fourth field-effect transistor The output pulse voltage signal passes through the second capacitor. Filtered input to the first inductor This generates a corresponding alternating magnetic field.

[0031] In this embodiment, as Figure 1 As shown, the transmitting resonant circuit includes a first inductor. Second capacitor With the first inductor Series connection, first resistor With the first inductor Electrical connection, second capacitor It serves a compensating function, used to compensate for the first inductance. Self-inductance; first inductance Used to generate high-frequency alternating magnetic fields and emit magnetic field energy.

[0032] like Figure 1 As shown, in an optional embodiment of the present invention, the receiving circuit includes: With the target battery The third capacitor connected electrically ; With the third capacitor A full-bridge rectifier electrically connected to a receiving resonant circuit; A receiving resonant circuit electrically connected to the full-bridge rectifier; A receiver controller electrically connected to the receiving resonant circuit; The receiving resonant circuit converts magnetic field energy into alternating current (AC) power, which is then input into a full-bridge rectifier. The full-bridge rectifier converts the AC power into direct current (DC) power, which is then passed through the third capacitor. After filtering, the DC power is input into the target battery. The receiving controller is based on the target battery. The voltage is controlled by adjusting the connection and disconnection of an additional capacitor to control the receiving circuit to be in constant current mode or constant voltage mode.

[0033] In this embodiment, as Figure 1 As shown, in the receiving circuit, the third capacitor... With battery Parallel connection of full-bridge rectifier and third capacitor The receiving resonant circuit and the full-bridge rectifier are connected in parallel, while the receiving controller is connected in series with the receiving resonant circuit. The full-bridge rectifier converts the high-frequency AC power obtained by the receiving resonant circuit into DC power, which is then passed through the third capacitor. Filtered output to battery The receiver controller receives the target battery. The voltage is controlled by adjusting the connection and disconnection of an additional capacitor to control the receiving circuit to be in constant current mode or constant voltage mode.

[0034] like Figure 1 As shown, in an optional embodiment of the present invention, the full-bridge rectifier includes: First rectifier diode ; With the first rectifier diode The second rectifier diode connected to the negative terminal ; With the first rectifier diode The third rectifier diode connected to the positive terminal ; With the second rectifier diode The fourth rectifier diode connected to the positive terminal The fourth rectifier diode The positive terminal and the third rectifier diode The positive terminal is electrically connected.

[0035] In this embodiment, as Figure 1 As shown, the full-bridge rectifier of the receiving circuit includes a third capacitor. The first rectifier diode in parallel Third rectifier diode With the first rectifier diode Series connection, second rectifier diode With the fourth rectifier diode Series connection; first rectifier diode The negative terminal and the second rectifier diode The negative terminal is connected to the first rectifier diode. The positive terminal and the third rectifier diode The negative terminal is connected to the second rectifier diode. The positive terminal and the fourth rectifier diode The negative terminal is connected to the fourth rectifier diode. The positive terminal and the third rectifier diode The positive terminal is electrically connected; the full-bridge rectifier converts the high-frequency AC power obtained from the receiving resonant circuit into DC power.

[0036] like Figure 1 As shown, in an optional embodiment of the present invention, the receiving resonant circuit includes: Fourth capacitor ; With the fourth capacitor The second inductor is electrically connected at the second terminal. ; With the second inductor The second resistor in the electrical connection ; Wherein, the fourth capacitor The first end is connected to the second rectifier diode. and the fourth rectifier diode between; The second resistor One end is connected to the first rectifier diode and the third rectifier diode between.

[0037] In this embodiment, as Figure 1 As shown, the receiving resonant circuit includes a second inductor. Fourth capacitor With the second inductor Series connection, second resistor With the second inductor Series connection; the fourth capacitor The first end is connected to the second rectifier diode. and the fourth rectifier diode Between; the second resistor One end is connected to the first rectifier diode and the third rectifier diode Between; the fourth capacitor It serves a compensating function, used to compensate for the second inductance. Self-inductance; second inductance Used to receive the first inductor The generated energy is converted into electrical energy.

[0038] like Figure 1 As shown, in an optional embodiment of the present invention, the receiving controller includes: The fifth capacitor electrically connected to the receiving resonant circuit ; With the fifth capacitor Electronic switches with electrical connections ; With the electronic switch Electrically connected signal modulator The signal modulator Electrically connected to the second digital signal processor; The signal modulator To the electronic switch Output the fifth pulse voltage signal.

[0039] In this embodiment, as Figure 1 As shown, the receiver controller includes a fifth capacitor. Electronic switch With the fifth capacitor Parallel connection, signal modulator With electronic switches Connection, signal modulator Electrically connected to the second digital signal processor; signal modulator The transmitted control signal controls the electronic switch. Disconnection and connection; like Figure 3 As shown, the second digital signal processor generates a control signal based on the acquired receiving voltage, compares the receiving voltage with a preset threshold, and controls the electronic switch when the receiving voltage is greater than the preset threshold. Disconnection and connection, switching circuit topology.

[0040] Specifically, when the receiving side voltage is less than a preset threshold, the electronic switch... Connected, at this time the fifth capacitor Without a receiving resonant circuit, both the transmitting and receiving sides are in constant current mode; when the receiving side voltage exceeds a preset threshold, the electronic switch... Disconnect, at this time the fifth capacitor The connection to the receiving resonant circuit results in incomplete compensation of the reactance in the circuit, creating an impedance angle. When the system is in the constant current phase, the impedance angle in the transmitting circuit is 0. When the fifth capacitor... When connected to the circuit, the impedance angle of the transmitting circuit is 45°, and both the transmitting and receiving sides are in constant voltage mode. Therefore, the transmitting side can switch between constant current and constant voltage controllers by judging whether the phase difference is greater than 45°. The receiver controller monitors the battery. Voltage changes control the receiving resonant circuit to operate in either constant current or constant voltage mode. Simultaneously, the transmitting resonant circuit senses changes in the receiving resonant circuit's operating mode, causing alterations in the transmitting current and voltage. The transmitting controller monitors these changes and controls the full-bridge inverter to correspondingly switch the transmitting resonant circuit to either constant current or constant voltage mode. This reduces the steady-state error of the dynamic wireless charging system and improves its dynamic response speed.

[0041] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A dynamic wireless charging control circuit, characterized in that, include: Transmitting circuit; The transmitting resonant circuit is electrically connected to the transmitting circuit; The receiving resonant circuit corresponding to the transmitting resonant circuit; The receiving circuit is electrically connected to the receiving resonant circuit; The transmitting circuit outputs an AC voltage to the transmitting resonant circuit, which converts the AC voltage into an AC magnetic field and transmits the magnetic field energy to the receiving resonant circuit. The receiving resonant circuit converts the received magnetic field energy into electrical energy and outputs it to the receiving circuit, which then charges the target battery.

2. The dynamic wireless charging control circuit according to claim 1, characterized in that, The transmitting circuit includes: With DC power supply ( The first capacitor connected in parallel ( ); With the first capacitor ( A full-bridge inverter electrically connected to a transmitting resonant circuit; The transmitter controller is electrically connected to the full-bridge inverter; Wherein, the first capacitor ( DC power supply ( The output power supply voltage is filtered and then input to the full-bridge inverter. The transmitter controller outputs a pulse voltage signal to the full-bridge inverter. The full-bridge inverter converts the filtered power supply voltage into an AC voltage of the target frequency according to the pulse voltage signal and outputs it to the transmitter resonant circuit.

3. The dynamic wireless charging control circuit according to claim 2, characterized in that, The full-bridge inverter includes: First field-effect transistor ( ); With the first field-effect transistor ( The second field-effect transistor with drain connection ( ); With the first field-effect transistor ( The third field-effect transistor with source electrical connection ( ); With the second field-effect transistor ( The fourth field-effect transistor with source electrical connection ( The fourth field-effect transistor ( The source of the third field-effect transistor ( ) and the third field-effect transistor ( The source electrode is electrically connected.

4. The dynamic wireless charging control circuit according to claim 3, characterized in that, The transmission controller includes: With the first field-effect transistor ( The first pulse width modulator connected electrically ( ); With the second field-effect transistor ( The second pulse width modulator is electrically connected. ); With the third field-effect transistor ( The third pulse width modulator connected electrically ( ); With the fourth field-effect transistor ( The fourth pulse width modulator connected electrically ( ); The first pulse width modulator ( ), second pulse width modulator ( ), third pulse width modulator ( ), fourth pulse width modulator ( All of them are electrically connected to the first digital signal processor; The first digital signal processor sends signals to the first pulse width modulator ( ), second pulse width modulator ( ), third pulse width modulator ( ), fourth pulse width modulator ( ) respectively output pulse control signals, so that the first pulse width modulator ( ) to the first field-effect transistor ( The first pulse voltage signal is output by the second pulse width modulator; ) to the second field-effect transistor ( The third pulse width modulator outputs a second pulse voltage signal; ) to the third field-effect transistor ( The third pulse voltage signal is output by the fourth pulse width modulator. ) to the fourth field-effect transistor ( Output the fourth pulse voltage signal.

5. The dynamic wireless charging control circuit according to claim 4, characterized in that, The first digital signal processor includes: Current acquisition circuit; A pulse generation circuit electrically connected to the current acquisition circuit; The current acquisition circuit inputs the phase shift angle of the acquired current to the pulse generation circuit; the pulse generation circuit then outputs the phase shift angle to the first pulse width modulator (PWM). Input the first pulse control signal to the second pulse width modulator ( Input the second pulse control signal to the third pulse width modulator ( Input the third pulse control signal to the fourth pulse width modulator ( Input the fourth pulse control signal.

6. The dynamic wireless charging control circuit according to claim 4, characterized in that, The transmitting resonant circuit includes: Second capacitor ( ); With the second capacitor ( The second terminal of the first inductor is electrically connected to the second terminal of the first inductor. ); With the first inductor ( The first resistor in the electrical connection ( ); The second capacitor ( The first end of ) is connected to the first field-effect transistor ( ) and the third field-effect transistor ( )between; The first resistor ( One end of the transistor is connected to the second field-effect transistor. ) and the fourth field-effect transistor ( )between; The first field-effect transistor ( ), second field-effect transistor ( ), third field-effect transistor ( ), fourth field-effect transistor ( The output pulse voltage signal passes through the second capacitor ( After filtering, the input to the first inductor ( ), and generate a corresponding alternating magnetic field.

7. The dynamic wireless charging control circuit according to claim 1, characterized in that, The receiving circuit includes: With the target battery ( The third capacitor connected electrically ( ); With the third capacitor ( A full-bridge rectifier electrically connected to a receiving resonant circuit; A receiving resonant circuit electrically connected to the full-bridge rectifier; A receiver controller electrically connected to the receiving resonant circuit; The receiving resonant circuit converts magnetic field energy into AC power, which is then input into a full-bridge rectifier. The full-bridge rectifier converts the AC power into DC power, which is then passed through the third capacitor (…). After filtering the DC power, it is input into the target battery. The receiving controller, based on the target battery ( The voltage of the receiving circuit is controlled by controlling the connection and disconnection of the additional capacitor, thereby controlling the receiving circuit to be in constant current mode or constant voltage mode.

8. The dynamic wireless charging control circuit according to claim 7, characterized in that, The full-bridge rectifier includes: First rectifier diode ( ); With the first rectifier diode ( The second rectifier diode connected to the negative terminal ( ); With the first rectifier diode ( The third rectifier diode connected to the positive terminal ( ); With the second rectifier diode ( The fourth rectifier diode connected to the positive terminal ( The fourth rectifier diode ( The positive terminal of ) and the third rectifier diode ( The positive terminal is electrically connected.

9. The dynamic wireless charging control circuit according to claim 8, characterized in that, The receiving resonant circuit includes: Fourth capacitor ( ); With the fourth capacitor ( The second inductor is electrically connected to the second terminal. ); With the second inductor ( The second resistor connected electrically ( ); Among them, the fourth capacitor ( The first terminal of ) is connected to the second rectifier diode ( ) and the fourth rectifier diode ( )between; The second resistor ( One end of the diode is connected to the first rectifier diode. ) and the third rectifier diode ( )between.

10. The dynamic wireless charging control circuit according to claim 7, characterized in that, The receiving controller includes: The fifth capacitor electrically connected to the receiving resonant circuit ( ); With the fifth capacitor ( ) Electronic switches for electrical connection ( ); With the electronic switch ( ) Electrically connected signal modulator ( The signal modulator ( It is electrically connected to the second digital signal processor; The signal modulator ( ) to the electronic switch ( Output the fifth pulse voltage signal.

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