Magnetic resonance wireless air charging control system and application

Abstract

The invention discloses a magnetic resonance wireless air charging control system and application, and belongs to the technical field of wireless charging. In the system, a PFC (Power Factor Correction) rectifying and filtering module rectifies and filters commercial power into direct current, and the direct current is boosted through a direct current boosting module; the pulse square waves are converted into sine waves through an emitter LC resonance circuit module, and an alternating magnetic field is generated; the alternating magnetic field is converted into an electric field through a receiver LC resonance module, and the electric field is rectified through a receiver rectifying and filtering module and then charges a load; the receiver power parameter feedback module detects load charging current, feeds back the load charging current to the receiver MCU control mainboard, and then sends an adjusting instruction to the emitter MCU main control board to control the pulse square wave frequency output by the emitter half-bridge driving inversion module so as to change the alternating magnetic field output by the emitter and finally adjust the load charging current.

Description

Technical Field

[0001] The present invention belongs to the technical field of wireless charging, and particularly relates to a magnetic resonance wireless non-contact charging control system and its application. Background Art

[0002] As electric bicycles, electric motorcycles, etc. are increasingly becoming means of transportation for the public, while bringing convenience, they also bring many safety hazards. Most current electric bicycles need to be connected to wires for charging. In an outdoor environment, they are easily affected by bad weather, causing short circuits or leakage at the charging interface. Some charging wires are prone to aging or have insufficient load-bearing power, which can easily damage the batteries of electric bicycles or even cause fires. Wireless charging can well solve the above problems.

[0003] However, some of the existing wireless charging technologies adopt magnetic induction coupling technology, which has a relatively short charging distance and low charging efficiency, bringing a bad experience to users. In the existing technology, although magnetic resonance technology is used for wireless charging, there are the following problems: 1) The resonance capacitors and inductors of the LC resonance circuits of the transmitter and receiver are relatively troublesome to adjust. The consistency of the adapted parameters modified on the hardware is poor. At the same time, the parameters of the circuit devices are affected by the environment and are not suitable for stable mass production of products; 2) The PFC module can only be one-to-one, that is, one PFC power supply can only supply power to one transmitter and one receiver; 3) The communication recognition between the wireless transmitter and the receiver is unstable; 4) The charging efficiency is low and the power loss is serious.

[0004] Therefore, a magnetic resonance wireless non-contact charging control system is proposed. Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a magnetic resonance wireless non-contact charging control system and its application, which solves the problems in the existing technology.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A magnetic resonance wireless non-contact charging control system includes:

[0008] A PFC power supply adaptation module: includes a PFC rectification and filtering module and a DC boost module; the PFC rectification and filtering module rectifies and filters the commercial power into direct current, and boosts it through the DC boost module;

[0009] A transmitter: includes a transmitter MCU main control board, a transmitter half-bridge drive and inverter module, a transmitter LC resonance circuit module, and a transmitter wireless communication module; the transmitter half-bridge drive and inverter module converts the direct current output by the PFC power supply adaptation module into a pulsed square wave, and turns it into a sine wave through the transmitter LC resonance circuit module to generate an alternating magnetic field;

[0010] And, a receiver: including a receiver wireless communication module, a receiver MCU control main board, a receiver rectification and filtering module, a receiver power parameter feedback module, and a receiver LC resonance module; the receiver LC resonance module receives the alternating magnetic field output by the transmitter and converts it into current, and rectifies and filters the alternating current into direct current through the receiver rectification and filtering module to charge the load.

[0011] The receiver power parameter feedback module detects the load charging current and feeds it back to the receiver MCU control main board, and then sends an adjustment instruction to the transmitter wireless communication module through the receiver wireless communication module. The transmitter MCU main control board controls the pulse square wave frequency output by the transmitter half-bridge drive inverter module according to this adjustment instruction to change the alternating magnetic field output by the transmitter, and finally adjusts the load charging current.

[0012] Further, the PFC power adapter module further includes a circuit power factor correction and protection module. The circuit power factor correction and protection module uses the PWM square wave generated by the power factor correction chip to drive the boost circuit to complete the power factor correction and boost functions; the model of the power factor correction chip is UCC28070.

[0013] Further, the PFC power adapter module further includes: a status display and heat dissipation module and a DC buck module:

[0014] The status display and heat dissipation module is used to display circuit abnormalities and dissipate heat from the circuit using a heat sink when the load is large.

[0015] The DC buck module is an auxiliary power supply, with an input of the DC high voltage generated by the PFC power adapter module and an output of 12V to supply power to its own circuit.

[0016] Further, the transmitter further includes: a transmitter power parameter feedback module. The transmitter power parameter feedback module detects the transmitter circuit current and voltage values and feeds them back to the transmitter MCU main control board for parameter adjustment to protect the circuit.

[0017] Further, the transmitter further includes a transmitter status indication and heat dissipation module. The transmitter status indication and heat dissipation module includes a status indicator light and a heat dissipation module. The status indicator light includes: a communication indicator light and a charging status indicator light.

[0018] Further, the transmitter half-bridge drive inverter module includes a drive power MOSFET or IGBT half-bridge circuit to convert the DC voltage into a pulse square wave of a certain frequency.

[0019] Further, the receiver further includes: a DC-DC buck module and a receiver status display and heat dissipation module;

[0020] The DC-DC buck module reduces the DC voltage converted and received by the receiver to supply power to the receiver MCU control main board, the receiver status display, and the heat dissipation module.

[0021] The receiver status display and heat dissipation module includes: a communication status indicator light, a power indicator light, a fan, and a heat sink; when the receiver is powered on and working, it controls the fan to start cooling, and cooperates with the heat sink for combined heat dissipation.

[0022] Further, the receiver LC resonance module includes: a resonance circuit composed of a receiver coil and a resonance capacitor, which is used to receive the alternating magnetic field output by the transmitter and convert it into an electric field; the receiver LC resonance module includes: a resonance circuit composed of a transmitter coil and a resonance capacitor.

[0023] The LC resonance circuit of the transmitter and the LC resonance circuit of the receiver are resonantly coupled to complete the conversion of electrical energy and magnetic field energy.

[0024] Further, one PFC power adapter module can supply power to multiple transmitters and receivers.

[0025] Further, the transmitter wireless communication module and the receiver wireless communication module include: GPS, 4G / 5G, Lora, 2.4G, WIFI, Bluetooth, zigbee, NB, infrared, or 433MHz wireless communication modules.

[0026] The application of the above-mentioned magnetic resonance wireless non-contact charging control system in device charging; the devices include: electric vehicles, industrial AGVs, industrial robots, drones, ground sensing devices, medical devices, and charging piles.

[0027] Advantages of the present invention:

[0028] 1. By adopting magnetic resonance technology, the present invention realizes non-contact wireless non-contact charging, improves the charging distance and charging efficiency, reduces power loss, and improves the charging safety indoors and outdoors.

[0029] 2. Through the wireless communication module, the present invention can dynamically adjust the charging power in real time and adapt the LC resonance parameters of the transmitter and the receiver.

[0030] 3. In the present invention, one PFC can supply power to multiple transmitters and multiple receivers, and the transmitters and receivers automatically identify and bind each other's IDs, improving the stability and reliability of communication identification between the transmitters and the receivers.

[0031] 4. The PFC circuit, the transmitter circuit, and the receiver circuit of the present invention all have closed-loop circuits for real-time detection and feedback of voltage, current, and temperature. The system can detect abnormal states such as overvoltage, undervoltage, overcurrent, circuit short circuit, circuit leakage, and overheating of the charging circuit in real time, give feedback, and take emergency protection measures.

[0032] 5. The present invention adopts three stages for battery charging: constant current charging stage, constant voltage charging stage, and trickle charging stage, which effectively improves the battery charging efficiency and protects the battery life.

[0033] 6. The present invention also has foreign object detection. A decision-making model is constructed based on multiple parameters such as power loss, Q value, and temperature to avoid abnormalities and safety hazards caused by the presence of foreign objects during the charging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0035] Figure 1 It is a schematic diagram of the overall structure of the charging control system of the present invention;

[0036] Figure 2 It is a block diagram of the PFC power adapter module of the system of the present invention;

[0037] Figure 3 It is a block diagram of the transmitter of the system of the present invention;

[0038] Figure 4 It is a block diagram of the receiver of the system of the present invention;

[0039] Figure 5 It is a PFC rectifier and filter circuit diagram of the system of the present invention;

[0040] Figure 6 It is a PFC power correction circuit diagram of the system of the present invention;

[0041] Figure 7 It is a PFC DC buck circuit diagram of the system of the present invention;

[0042] Figure 8 It is a half-bridge inverter circuit diagram of the transmitter of the system of the present invention;

[0043] Figure 9 It is a rectifier and filter circuit diagram of the receiver of the system of the present invention;

[0044] Figure 10 It is a software flow chart of the transmitter of the system of the present invention;

[0045] Figure 11 It is a software flow chart of the receiver of the system of the present invention;

[0046] Figure 12Schematic diagram of one PFC module in the system of the present invention supplying power to multiple transmitters and receivers. Detailed implementation manners

[0047] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0048] Embodiment 1

[0049] As Figure 1 shown, a magnetic resonance wireless non-contact charging control system includes a PFC power adapter module, a transmitter, and a receiver; and, as Figure 12 shown, one PFC power adapter module can supply power to multiple transmitters and receivers.

[0050] As Figure 2 shown, the PFC power adapter module includes: a PFC rectification and filtering module, a status display and heat dissipation module, a DC boost module, a DC buck module, and a circuit power factor correction and protection module;

[0051] The PFC rectification and filtering module rectifies and filters the 220V AC mains power into DC power; the DC boost module is responsible for boosting the rectified and filtered DC voltage to 380V; the circuit power factor correction and protection module uses the PWM square wave generated by the power factor correction chip U1 to drive the boost circuit to complete the power factor correction and boost functions, with an output current of 8A and a power exceeding 3000W;

[0052] The status display and heat dissipation module is used to display circuit abnormalities, facilitating the location and analysis of hardware problems, and when the load is large, using a heat sink to quickly dissipate heat from the circuit, ensuring that the circuit components operate within the normal range;

[0053] The DC buck module is an auxiliary power supply, with an input of the DC high voltage generated by the PFC power adapter module and an output of 12V to supply power to its own circuit on the board.

[0054] The circuit of the PFC rectification and filtering module is as Figure 5As shown in the figure; among them, the mains 220V AC input passes through a relay to connect to a fuse. Capacitors CY2 and CY3 play a role in common-mode interference filtering. Varistors TH1 to TH3 suppress spike interference and sudden changes in load current. The spike current of R1 to R3 is discharged to the ground. LF1 to LF2 are two common-mode inductors. Capacitors CY1 and CY4 filter out common-mode interference. Varistors VR1 to VR3 discharge the spike current. Differential-mode capacitors CX1 to CX2 suppress differential-mode interference. D1 to D2 are full-bridge rectifier bridges, and finally DC power is output.

[0055] The PFC power correction circuit is as Figure 6 shown; the power factor correction chip used is UCC28070. This chip is an advanced power factor correction (PFC) device that integrates two pulse width modulators (PWMs) operating 180° out of phase. This interleaved PWM operation can significantly reduce the input and output ripple current, making the conduction EMI filtering easier and less costly. The improved multiplier design provides a shared current reference for two independent current amplifiers, ensuring matched average current mode control in the two PWM outputs while maintaining stable, low-distortion, sinusoidal input line current.

[0056] The circuit of the DC buck module is as Figure 7 shown. Under the control of transformer U3, the 380V DC high voltage is converted into 12V low voltage for use by the low-voltage circuits on the board.

[0057] As Figure 3 shown, the transmitter includes: a transmitter control module, a transmitter half-bridge drive inverter module, a transmitter power parameter feedback module, a transmitter LC resonance circuit module, and a transmitter wireless communication module; the transmitter control module includes: a transmitter MCU main control board and a transmitter status indicator and heat dissipation module;

[0058] The PFC power adapter module outputs high-voltage DC power to supply power to the transmitter. The transmitter power parameter feedback module detects the current and voltage values of the transmitter circuit and feeds them back to the transmitter MCU main control board for parameter adjustment to protect the hardware. The transmitter half-bridge drive inverter module converts the DC power output by the PFC power adapter module into a pulse square wave, and through the transmitter LC resonance circuit module, it becomes a sine wave to generate an alternating magnetic field;

[0059] The transmitter status indicator and heat dissipation module includes: a status indicator light and a heat dissipation module. The status indicator light includes: a communication indicator light and a charging status indicator light; the bottom plate of the heat dissipation module is provided with a heat-conducting metal plate.

[0060] Specifically, the PFC power adapter module outputs high-voltage DC to the transmitter to supply power to the transmitter. The transmitter MCU main control board is a circuit logic control chip. On the one hand, it will continuously sample the current value and voltage value feedback by the transmitter power parameter feedback module. Once overcurrent, overvoltage or overheating occurs, the circuit will immediately enter protection. On the other hand, according to the transmitter wireless communication module, it receives parameter adjustment instructions from the receiver wireless communication module. When the receiver detects that the load charging current is too small, the receiver sends a power increase instruction to the transmitter. When the receiver detects that the load charging current is too large, the receiver sends a power decrease instruction to the transmitter. When the transmitter receives the power adjustment instruction from the receiver, the transmitter MCU main control board will output two complementary PWMs to the chip UCC27712D to drive the transmitter half-bridge drive inverter module. As Figure 8 shown, the PWM signal generates a high-voltage pulsed square wave through the transmitter half-bridge drive inverter module. The MCU modifies the frequency of the high-voltage pulsed square wave by modifying the frequency of the PWM. The high-voltage pulsed square wave passes through the transmitter LC resonance module circuit and becomes a sine wave, generating a stable alternating magnetic field. When the PWM signal frequency is the same as the circuit LC resonance frequency, the sine wave amplitude is the largest. If it is larger or smaller, its amplitude will decrease. According to the frequency calculation formula of the LC oscillation circuit:

[0061]

[0062] wherein, the frequency is only determined by the inductor and capacitor: the magnitude of the frequency F (unit: Hz) depends entirely on the inductor L (unit: henry, H) and the capacitor C (unit: farad, F), and has nothing to do with the initial charge amount and current magnitude. The expression of the period T is:

[0063]

[0064] wherein, the frequency F is the reciprocal of the period T;

[0065] The LC oscillation circuit refers to an oscillation circuit that uses an inductor L and a capacitor C to form a frequency selection network, which is used to generate high-frequency sine wave signals. When the ideal LC series circuit is in resonance, it presents 0 impedance externally. The product of the total value of L and the total value of C in the transmitter LC resonance module circuit in the transmitter needs to be equal to the product of the total value of L and the total value of C in the receiver LC resonance module circuit in the receiver. Based on this principle, the LC parameter values of the circuit are designed. When the frequency of the PWM output is equal to the frequency value of the LC oscillation circuits of the transmitter and the receiver, the transmitter of the circuit outputs the maximum power, and the power input by the receiver is also the largest; thereby increasing the charging power of the load connected to the receiver. When the PWM frequency deviates from the circuit LC oscillation frequency, the transmitter output power decreases, and at the same time the receiver input power decreases, thereby reducing the charging power of the load connected to the receiver. In this way, the function of adjustable power is completed.

[0066] In this embodiment, the transmitter power parameter feedback module will detect the output power of the transmitter circuit in real time, and feedback the output current and voltage to the transmitter MCU main control board. After AD conversion, if the circuit has overcurrent, overvoltage, or overtemperature, the transmitter MCU main control board will immediately stop the output of PWM, that is, the magnetic field output by the transmitter is zero, and the entire circuit of the receiver is powered off, thus playing a role in circuit protection. The maximum output power of the transmitter is about 360W.

[0067] The circuit of the transmitter half-bridge drive inverter module is as Figure 8 shown, including a drive power MOSFET or IGBT half-bridge circuit, which converts the DC voltage into a pulsed square wave of a certain frequency; U5 is a drive IC, whose function is to convert the control signal output by the MCU into a drive signal matching the MOSFET, and distribute them to the upper and lower MOSFETs of the half-bridge circuit respectively, so that the MOSFET converts the high-voltage DC into a square wave of a specific frequency under the control of the MCU and sends it to the subsequent resonance module.

[0068] As Figure 4 shown, the receiver includes: a receiver wireless communication module, a receiver control module, a receiver DC-DC buck module, a receiver rectification and filtering module, a receiver power parameter feedback module, and a receiver LC resonance module; the receiver control module includes: a receiver MCU control main board and a receiver status display and heat dissipation module;

[0069] The receiver LC resonance module receives the alternating magnetic field output by the transmitter and converts it into current, and rectifies and filters the alternating current into direct current through the receiver rectification and filtering module to charge the load; the receiver power parameter feedback module detects the load charging current and feeds it back to the receiver MCU control main board, and the receiver MCU control main board sends an adjustment instruction to the transmitter wireless communication module through the receiver wireless communication module. The transmitter MCU main control board receives the adjustment instruction from the receiver through the transmitter wireless communication module, and the transmitter MCU main control board controls the frequency of the pulsed square wave output by the transmitter half-bridge drive inverter module according to this adjustment instruction, thereby changing the alternating magnetic field output by the transmitter, and further adjusting the load charging current;

[0070] The receiver status display and heat dissipation module includes: a communication status indicator light, a power indicator light, a fan, and a heat sink; when the receiver is powered on and working, it controls the fan to start cooling, and cooperates with the heat sink for combined heat dissipation; the maximum output of the receiver is 360W, the maximum current is 4A, and the maximum output voltage is 90V;

[0071] In this embodiment, the receiver DC-DC buck module reduces the DC voltage obtained by the receiver reception and conversion to 12V and 3.3V to supply power to the receiver MCU control main board and the receiver status display and heat dissipation module.

[0072] Specifically, the receiver power parameter feedback module receives the load current feedback and inputs it to the receiver MCU control main board. After the AD sampling of the receiver MCU control main board, the MCU sends an adjustment instruction to the transmitter wireless communication module according to the defined rated current through the receiver wireless communication module, and indirectly adjusts the input current of the receiver by adjusting the output power of the transmitter, thereby adjusting the load input current; when the MCU detects that the battery-type load is fully charged, the receiver notifies the transmitter to stop outputting power through the wireless module, and the transmitter immediately stops outputting PWM; on the other hand, the receiver main control MCU continuously detects the charging current and charging voltage of the battery in the receiver power parameter feedback module. When the current or voltage exceeds the set threshold, the receiver circuit enters the protection process and notifies the transmitter to change the PWM output frequency to an appropriate value;

[0073] The receiver LC resonance module includes: a resonance circuit composed of a receiver coil and a resonance capacitor, which is used to receive the alternating magnetic field output by the transmitter and convert it into an electric field. The receiver rectification and filtering module is used to rectify and filter the alternating current received by the receiver coil into direct current, and then through the receiver DC-DC buck module, the power supply voltage is adapted to the receiver MCU control main board and other circuits.

[0074] The circuit of the receiver rectification and filtering module is as Figure 9 shown. Among them, the sine wave output by J1 is rectified by D1 and D2 and filtered by C11 and C7 filter capacitors to become direct current to charge the load; the input voltage sampling is composed of D4, D13, and C10, and the input current sampling is composed of devices such as T1, D5, D6, D9, and D11. These two sampling signals will be sent to the MCU as parameters for control operation.

[0075] In this embodiment, the transmitter LC resonance circuit module includes a resonance inductance circuit composed of N resonance capacitors and an N-turn coil (transmitter coil), forming a frequency selection circuit. When the circuit frequencies are the same, the maximum transmission power can be achieved. The transmitter LC resonance circuit and the receiver LC resonance circuit are resonantly coupled to complete the conversion of electrical energy and magnetic field energy.

[0076] The transmitter and receiver coils are generally mainly composed of coils wound with pure copper wire on a plane and magnetic isolation sheets covering the bottom of the coil. The magnetic isolation sheets are mainly used to enhance the magnetic field aggregation degree of a certain surface and reduce the magnetic field aggregation degree of the ineffective surface. The transmitter magnetic isolation sheet is at the bottom of the coil, and the receiver magnetic isolation sheet is at the top of the coil. The number of turns and the thickness of the coil will affect the magnitude of the coil inductance value L, and they are matched according to the principle that the product of LC of the transmitter LC resonance module and the receiver LC resonance module is the same; the farther the distance between the transmitter and receiver coils, the lower the power received by the receiver. Generally, the maximum distance between the transmitter and receiver coils is 50 cm.

[0077] In this embodiment, the transmitter wireless communication module includes wireless communication modules such as GPS, 4G / 5G, Lora, 2.4G, WIFI, Bluetooth, zigbee, NB, infrared, or 433 MHz, which communicate with the receiver wireless communication module to send and receive data to adjust the charging current and voltage in real time; the receiver wireless communication module also includes wireless communication modules such as GPS, 4G / 5G, Lora, 2.4G, WIFI, Bluetooth, zigbee, NB, infrared, or 433 MHz.

[0078] The magnetic resonance wireless non-contact charging system of the present invention can be applied not only to electric bicycles, but also to electric tricycles, electric motorcycles, electric scooters, industrial AGVs, industrial robots, drones, medical devices, charging piles, bedside tables, ground sensing devices, etc. for charging.

[0079] Embodiment 2

[0080] In this embodiment, the operating logics of the transmitter and the receiver are introduced:

[0081] 1) The operating logic of the transmitter MCU software is as Figure 10 shown: When the transmitter is powered on, it initializes the circuit signals and parameters. The transmitter wireless communication module sends a connection signal to the surrounding area waiting for the receiver wireless communication module. When the receiver approaches the transmitter, the receiver is powered on, and the wireless communication module in the receiver actively notifies its ID to the transmitter wireless communication module. When the transmitter recognizes the receiver ID, it responds with its own ID to the receiver. At this time, the IDs of the transmitter and the receiver are bound to a one-to-one communication relationship. After binding, the transmitter receives the power adjustment instruction from the receiver in real time and simultaneously modifies the pulse frequency of the output complementary PWM. When the transmitter MCU detects overcurrent, overvoltage, overtemperature in the circuit, or the receiver actively requests to end the charging or the receiver goes offline, the transmitter stops outputting the PWM signal;

[0082] 2) The operating logic of the receiver MCU software is as Figure 11 shown: When the receiver coil approaches the transmitter coil, the receiver main board is powered on and initializes the circuit signals and parameters. The receiver reports its ID to the transmitter through the wireless communication module. After the transmitter recognizes and binds, it responds with its own ID. The receiver receives the ID and confirms the binding to the transmitter. The receiver detects whether the battery load is fully charged. If it is fully charged, it does not enter the charging process. If it is undercharged, it notifies the transmitter to increase the output power and increase the charging current. When the receiver detects that the output current reaches the maximum allowable current, the receiver no longer sends an instruction to adjust the power size, but only sends a heartbeat instruction to notify the transmitter that it is online. When the charging detection load is close to full, the receiver sends an instruction to the transmitter to reduce the output power to reduce the charging current and enter the trickle charging mode. When the receiver detects that the battery-like load is fully charged, the receiver notifies the transmitter to end the charging and turn off the PWM output.

[0083] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0084] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and the descriptions in the specification are only used to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A magnetic resonance wireless inductive charging control system, characterized in that, Including: PFC power adapter module: including PFC rectification and filtering module and DC boost module; The PFC rectification and filtering module rectifies and filters the mains power into direct current, and boosts it through the DC boost module; Transmitter: including transmitter MCU main control board, transmitter half-bridge drive and inverter module, transmitter LC resonance circuit module and transmitter wireless communication module; the transmitter half-bridge drive and inverter module converts the direct current output by the PFC power adapter module into a pulsed square wave, and turns it into a sine wave through the transmitter LC resonance circuit module to generate an alternating magnetic field; And a receiver: including a receiver wireless communication module, a receiver MCU control main board, a receiver rectification and filtering module, a receiver power parameter feedback module and a receiver LC resonance module; The receiver LC resonance module receives the alternating magnetic field output by the transmitter and converts it into current, and rectifies and filters the alternating current into direct current through the receiver rectification and filtering module to charge the load; The receiver power parameter feedback module detects the load charging current and feeds it back to the receiver MCU control main board, and then sends an adjustment instruction to the transmitter wireless communication module through the receiver wireless communication module. The transmitter MCU main control board controls the pulsed square wave frequency output by the transmitter half-bridge drive and inverter module according to this adjustment instruction to change the alternating magnetic field output by the transmitter, and finally adjusts the load charging current.

2. The magnetic resonance wireless inductive charging control system according to claim 1, wherein The PFC power adapter module further includes a circuit power factor correction and protection module. The circuit power factor correction and protection module uses the PWM square wave generated by the power factor correction chip to drive the boost circuit to complete the power factor correction and boost functions; the model of the power factor correction chip is UCC28070.

3. The magnetic resonance wireless inductive charging control system according to claim 1, wherein The PFC power adapter module further includes: a status display and heat dissipation module and a DC buck module: The status display and heat dissipation module is used to display circuit abnormalities, and when the load is large, it uses a heat sink to dissipate heat from the circuit; The DC buck module is an auxiliary power supply, with an input of the DC high voltage generated by the PFC power adapter module and an output of 12V to supply power to its own circuit.

4. The magnetic resonance wireless inductive charging control system according to claim 1, characterized in that The transmitter further includes: a transmitter power parameter feedback module, which detects the transmitter circuit current and voltage values and feeds them back to the transmitter MCU main control board for parameter adjustment to protect the circuit.

5. The magnetic resonance wireless inductive charging control system according to claim 1, wherein The transmitter further includes a transmitter status indication and heat dissipation module, and the transmitter status indication and heat dissipation module includes a status indicator light and a heat dissipation module. The status indicator lights include: a communication indicator light and a charging status indicator light.

6. The magnetic resonance wireless inductive charging control system according to claim 1, wherein, The transmitter half-bridge drive and inverter module includes a driving power MOSFET or IGBT half-bridge circuit to convert the DC voltage into a pulsed square wave of a certain frequency.

7. A magnetic resonance wireless inductive charging control system according to claim 1, wherein The receiver further includes: a DC-DC buck module and a receiver status display and heat dissipation module; The DC-DC buck module reduces the voltage of the direct current converted and received by the receiver to supply power to the receiver MCU control main board and the receiver status display and heat dissipation module; The receiver status display and heat dissipation module includes: a communication status indicator light, a power indicator light, a fan and a heat sink; when the receiver is powered on and working, it controls the fan to start dissipating heat and combines with the heat sink to dissipate heat.

8. A magnetic resonance wireless inductive charging control system according to claim 1, wherein The receiver LC resonance module includes: a resonance circuit composed of a receiver coil and a resonance capacitor, which is used to receive the alternating magnetic field output by the transmitter and convert it into an electric field; the receiver LC resonance module includes: a resonance circuit composed of a transmitter coil and a resonance capacitor; The LC resonance circuit of the transmitter and the LC resonance circuit of the receiver are resonantly coupled to complete the conversion of electrical energy and magnetic field energy.

9. The magnetic resonance wireless inductive charging control system according to claim 1, wherein A PFC power adapter module can supply power to multiple transmitters and receivers.

10. The magnetic resonance wireless inductive charging control system according to claim 1, wherein The transmitter wireless communication module and the receiver wireless communication module include: GPS, 4G / 5G, Lora, 2.4G, WIFI, Bluetooth, zigbee, NB, infrared or 433MHz wireless communication modules.

11. Use of a magnetic resonance wireless inductive charging control system according to any one of claims 1-10 in charging an apparatus; the apparatus comprising: Electric vehicles, industrial AGVs, industrial robots, drones, ground sensing devices, medical devices, and charging piles.

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