An adaptive matching system for magnetic resonance wireless charging

Abstract

The present invention provides an adaptive matching system for magnetic resonance wireless charging, including a transmitting Bluetooth communication and control circuit, a transmitting switch circuit, a voltage stabilizing circuit, a transmitting antenna, a radio frequency power amplifying circuit, a receiving Bluetooth communication and control circuit receiving antenna, a receiving switch circuit, and a rectifying voltage stabilizing circuit. The present invention uses the Bluetooth communication and control circuit to collect information between transmitting and receiving, and uses a plurality of transmitting and receiving antenna matching schemes, and uses a switch array circuit to switch the transmitting and receiving antenna matching schemes, thereby solving the over-coupling phenomenon caused by too close distance and the under-coupling phenomenon caused by too far distance, thereby improving the transmission efficiency between the transmitting and receiving antennas. The present invention has a simple structure, a reasonable design, and a strong value for promotion and application.

Description

Technical Field

[0001] The present invention belongs to the field of wireless power transmission, and in particular relates to an adaptive matching system for magnetic resonance wireless charging. Background Art

[0002] With the continuous development of electronic information technology and automation control technology, various household appliances, consumer electronic products, mobile communication devices, etc. have been widely popularized. However, traditional household appliances rely on wired connections between power cords and power sockets to achieve power supply. Electronic devices with built-in batteries also require wired connections between charging cables and power sockets for charging. Therefore, we can see wires everywhere that provide power supply for these electronic devices. These wires not only occupy our activity space and limit the convenience of using equipment, but also create hidden dangers for safe use of electricity. Therefore, with the growing demand for portable devices and green energy systems that can be used completely wirelessly, the research and application of wireless energy transmission technology has quickly become the focus of domestic and foreign academic and industrial circles. At present, the wireless charging technologies recognized by the industry are mainly divided into three categories. One is the QI standard promoted by the WPC Alliance, also known as magnetic induction coupling technology, the other is the magnetic resonance coupling technology promoted by the Airfuel Alliance, and the other is electromagnetic radiation wireless energy transmission technology. Compared with magnetic induction technology, magnetic resonance coupling technology has obvious advantages in charging distance, spatial freedom, one-to-many charging and power expansion; and compared with electromagnetic radiation wireless energy transmission technology, magnetic resonance coupling technology has more practical application value in terms of energy conversion efficiency, transmission power and electromagnetic safety. At present, this technology has gradually been applied to smart wearables, sweeping robots, AGV and other equipment, giving the equipment the function of wireless charging, and improving the safety and intelligence of the equipment, and enhancing the user experience. In addition, the application of magnetic resonance coupling technology in the field of smart home will also subvert the use mode of traditional home appliances, mobile communication equipment and consumer electronic products. With the residence as the platform, magnetic resonance wireless charging technology, hidden wiring technology and automatic control technology are used to completely remove all power lines in the home living area, wirelessly charge the equipment or continuously supply power, improve the safety, convenience and comfort of the home, and build an efficient, environmentally friendly and energy-saving living environment. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, an adaptive matching system for magnetic resonance wireless charging provided by the present invention solves the problems of over-coupling caused by too close a distance and under-coupling caused by too far a distance, thereby improving the transmission efficiency between the transmitting and receiving antennas.

[0004] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0005] This solution provides an adaptive matching system for magnetic resonance wireless charging, including a magnetic resonance transmitting module and a magnetic resonance receiving module connected to the magnetic resonance transmitting module;

[0006] The magnetic resonance transmitting module comprises a transmitting Bluetooth communication and control circuit, a transmitting switch circuit, a voltage stabilizing circuit and a transmitting antenna respectively connected to the transmitting Bluetooth communication and control circuit, and a radio frequency power amplifying circuit respectively connected to the transmitting switch circuit and the voltage stabilizing circuit; the voltage stabilizing circuit is connected to the transmitting switch circuit, and the transmitting antenna is connected to the magnetic resonance receiving module;

[0007] The magnetic resonance receiving module includes a receiving Bluetooth communication and control circuit, and a receiving antenna, a receiving switch circuit and a rectifying and stabilizing circuit respectively connected to the receiving Bluetooth communication and control circuit. The rectifying and stabilizing circuit is connected to the receiving switch circuit, and the receiving antenna is connected to the transmitting antenna.

[0008] The beneficial effects of the present invention are as follows: the present invention utilizes an adaptive matching scheme for magnetic resonance wireless power transmission, that is, utilizes Bluetooth communication and a control circuit to collect information between transmission and reception, and uses multiple transceiver antenna matching schemes and a switch array circuit to switch the transceiver antenna matching schemes to solve the problem of poor transmission efficiency caused by over-coupling due to too close a distance and under-coupling due to too far a distance during magnetic resonance wireless power transmission, thereby greatly improving the transmission efficiency at different distances.

[0009] Further, the transmitting Bluetooth communication and control circuit includes a Bluetooth chip N14, a voltage regulator chip N13 and a voltage regulator chip N12;

[0010] The DVDD2 pin of the chip N14 is respectively connected to the DVDD1 pin of the chip N14, the 3.3V power supply, the grounding capacitor C196 and the grounding capacitor C195, the GND pin of the chip N14 is grounded, the NC pin of the chip N14 is connected to the 3.3V power supply, the P1_0 pin of the chip N14 is connected to the emission switch circuit, the P1_1 pin of the chip N14 is connected to the cathode of the light-emitting diode LED6, the anode of the light-emitting diode LED6 is connected to one end of the resistor R79, the other end of the resistor R79 is respectively connected to one end of the resistor R78 and the 3.3V power supply, the other end of the resistor R78 is connected to the anode of the light-emitting diode LED5, the cathode of the light-emitting diode LED5 is connected to the P1_2 pin of the chip N14, and the chip N The P1_3 pin of the chip N14 is connected to the voltage stabilizing circuit, the P1_7 pin of the chip N14 is connected to the transmitting switch circuit, the P0_6 pin of the chip N14 is connected to one end of the resistor R77, the other end of the resistor R77 is connected to the voltage stabilizing circuit, the P0_7 pin of the chip N14 is connected to one end of the resistor R75, the other end of the resistor R75 is respectively connected to one end of the capacitor C189, one end of the resistor R74 and one end of the resistor R73, the other end of the capacitor C189 is connected to the other end of the resistor R74 and grounded, the other end of the resistor R73 is connected to the voltage stabilizing circuit, the AVDD5 pin of the chip N14 is respectively connected to the 3.3V power supply and the grounding capacitor C183, the AVDD3 pin of the chip N14 is respectively connected to the grounding capacitors C184 and 3.3V power supply, the AVDD2 pin of the chip N14, the AVDD1 pin of the chip N14, the AVDD4 pin of the chip N14, the grounding capacitor C182, the grounding capacitor C181, the grounding capacitor C180, the AVDD6 pin of the chip N14, one end of the capacitor C185, one end of the capacitor C179 and one end of the inductor L8 are connected, the other end of the capacitor C185 is connected to the other end of the capacitor C179 and is grounded, the other end of the inductor L8 is respectively connected to the power supply VCC, one end of the capacitor C178, one end of the capacitor C177 and the chip N1 The other end of the capacitor C178 is connected to the other end of the capacitor C177, the GND pin of the chip N14, one end of the capacitor C170 and one end of the capacitor C169 respectively. The other end of the capacitor C170 is connected to the Vin pin of the chip N13, the other end of the capacitor C169, one end of the capacitor C167, the Vout pin of the chip N12 and the transmitting switch circuit respectively. The GND pin of the chip N12 is connected to one end of the capacitor C168 and the other end of the capacitor C167 respectively. The Vin pin of the chip N12 is connected to the The other end of capacitor C168 is connected to the voltage stabilizing circuit, the RF_P pin of the chip N14 is connected to one end of capacitor C186, the other end of capacitor C186 is respectively connected to one end of inductor L9 and one end of capacitor C187, the other end of inductor L9 is grounded, the other end of capacitor C187 is respectively connected to one end of inductor L10 and one end of inductor L11, the other end of inductor L11 is respectively connected to grounded capacitor C188 and one end of inductor L12, the other end of inductor L12 is connected to the transmitting antenna, the RF_N pin of the chip N14 is connected to capacitor C19 0, the other end of capacitor C190 is connected to the grounded capacitor C191 and the other end of inductor L10 respectively, the XOSC_Q1 pin of the chip N14 is connected to the grounded capacitor C192 and one end of the crystal oscillator Y2 respectively, the other end of the crystal oscillator Y2 is connected to the XOSC_Q2 pin of the chip N14 and the grounded capacitor C193 respectively, the DCOUPL pin of the chip N14 is connected to the grounded capacitor C194, the R_BIAS pin of the chip N14 is connected to the grounded resistor R76, and the GND pin of the chip N14 is grounded. .

[0011] The beneficial effect of the above further scheme is that the transmitting Bluetooth communication and control circuit in the present invention is used to detect and collect the voltage of the radio frequency power amplifier circuit and control the switch of the switch array circuit, thereby realizing an adaptive matching scheme of the transmitting module.

[0012] Further, the transmit switch circuit includes a transmit matching subcircuit and a transmit switch array subcircuit;

[0013] The transmitting switch array subcircuit includes a relay Y4, a relay Y5 and a relay Y6; the 5th pin and the 4th pin of the relay Y4 are respectively connected to the transmitting matching subcircuit, the 6th pin of the relay Y4 is connected to the RF power amplification circuit, the 8th pin of the relay Y4 is connected to the cathode of the diode D4 and the collector of the transistor Q6, the emitter of the transistor Q6 is respectively connected to the anode of the diode D4, one end of the resistor R32 and one end of the capacitor C66, and is grounded, the base of the transistor Q6 is respectively connected to the other end of the resistor R32, the other end of the capacitor C66 and one end of the resistor R31, the other end of the resistor R31 is connected to the P1_7 pin of the chip N14, the 1st pin of the relay Y4 is connected to the Vin pin of the chip N13, the 3rd pin of the relay Y4 is connected to the 3rd pin of the relay Y6, the 7th pin of the relay Y4 is connected to the 6th pin of the relay Y5; the 4th pin, the 5th pin, the 7th pin and the 2nd pin of the relay Y5 are respectively connected to the transmitting matching subcircuit, The first pin of the relay Y5 is connected to the Vin pin of the chip N13, the third pin of the relay Y5 is connected to the fourth pin of the relay Y6, the eighth pin of the relay Y5 is respectively connected to the cathode of the diode D3 and the collector of the transistor Q7, the base of the transistor Q7 is respectively connected to one end of the resistor R41, one end of the capacitor C96 and one end of the resistor R40, the other end of the resistor R40 is connected to the P1_0 pin of the chip N14, the anode of the diode D3 is respectively connected to the emitter of the transistor Q7, the base of the transistor Q7 is respectively connected to one end of the resistor R41, the capacitor C96 and the resistor R40, the other end of the resistor R40 is connected to the P1_0 pin of the chip N14, the cathode of the diode D3 is respectively connected to the emitter of the transistor Q7, the capacitor C96 and the resistor R40, the 1 and the other end of the capacitor C96, and are grounded; the first pin of the relay Y6 is connected to the Vin pin of the chip N13, the second pin of the relay Y6 is connected to the collector of the transistor Q9, the emitter of the transistor Q9 is respectively connected to one end of the resistor R43 and one end of the capacitor C97, and is grounded, the base of the transistor Q9 is respectively connected to the other end of the resistor R43, the other end of the capacitor C97 and one end of the resistor R42, and the other end of the resistor R42 is connected to the P1_0 pin of the chip N14;

[0014] The transmitting matching subcircuit includes capacitor C56, capacitor C57, capacitor C58, capacitor C59, capacitor C60, capacitor C61, capacitor C62, capacitor C63, capacitor C64, capacitor C65, capacitor C98, capacitor C92, capacitor C93, capacitor C94 and capacitor C95; one end of capacitor C56 is respectively connected to one end of capacitor C57, one end of capacitor C58 and the 5th pin of relay Y4, the other end of capacitor C56 is respectively connected to the other end of capacitor C57, the other end of capacitor C58, one end of capacitor C59, one end of capacitor C60 and the 4th pin of relay Y4, the other end of capacitor C59 is respectively connected to the other end of capacitor C60 and the voltage stabilizing circuit; one end of capacitor C61 is respectively connected to the One end of the capacitor C98 is respectively connected to one end of the capacitor C92, one end of the capacitor C93 and the 7th pin of the relay Y5, the other end of the capacitor C98 is respectively connected to the other end of the capacitor C92, the other end of the capacitor C93, one end of the capacitor C94, the 2nd pin of the relay Y5 and one end of the capacitor C95, and the other end of the capacitor C95 is respectively connected to the other end of the capacitor C94 and the voltage stabilizing circuit.

[0015] The beneficial effect of the above further scheme is that the transmitting switch circuit of the present invention adopts the design mode of the switch array circuit, and utilizes the switching of different transmitting matching circuits to improve the transmission efficiency of the transmitting and receiving antennas at different distances, thereby improving the overall efficiency of the system.

[0016] Furthermore, the number of the transmit matching sub-circuit is at least 2.

[0017] Furthermore, the voltage stabilizing circuit includes a conversion chip N1, an operational amplifier chip N2, a MOS tube Q3 and a voltage stabilizing chip N3;

[0018] The IN pin of the chip N1 is respectively connected to the grounding capacitor C3, one end of the resistor R1, the positive electrode of the polarity capacitor C2 and one end of the magnetic bead L1, the other end of the magnetic bead L1 is respectively connected to the positive electrode of the polarity capacitor C1 and the Vin end of the chip N12, the EN pin of the chip N1 is respectively connected to the other end of the resistor R1 and one end of the resistor R2, the AAM pin of the chip N1 is connected to one end of the resistor R3, the VCC pin of the chip N1 is connected to one end of the capacitor C5, the other end of the capacitor C5 is respectively connected to the other end of the resistor R3, the other end of the resistor R2, the negative electrode of the polarity capacitor C2, the negative electrode of the polarity capacitor C1, the GND pin of the chip N1, the grounding resistor RS3, one end of the resistor R8, the emitter of the transistor Q4, one end of the resistor R22, one end of the resistor RS1 and one end of the resistor R22, and are grounded, the FB pin of the chip N1 is respectively connected to one end of the resistor R6 and one end of the capacitor C6, the other end of the resistor R6 is respectively connected to the resistor The other end of R8, the negative electrode of the diode D1 and one end of the resistor R7 are connected, the other end of the capacitor C6 is connected to one end of the resistor R5, the other end of the resistor R5 is respectively connected to the other end of the resistor R7, the grounding capacitor C9, the grounding capacitor C8, the grounding capacitor C7, one end of the inductor L2, one end of the resistor R24 ​​and the source of the MOS tube Q3, the other end of the inductor L12 is respectively connected to the SW pin of the chip N1 and one end of the capacitor C4, the other end of the capacitor C4 is connected to one end of the resistor R4, the other end of the resistor R4 is connected to the BST pin of the chip N1, the collector of the transistor Q4 is connected to one end of the resistor R23, the other end of the resistor R23 is respectively connected to the other end of the resistor R24 ​​and the gate of the MOS tube Q3, the drain of the MOS tube Q3 is connected to the RF power amplifier circuit, the base of the transistor Q4 is respectively connected to one end of the resistor R21 and the other end of the resistor R22, and the other end of the resistor R21 is connected to the P1_3 pin of the chip N14;

[0019] The VDD pin of the chip N2 is respectively connected to one end of the capacitor C10, one end of the capacitor C11 and the Vout pin of the chip N3, the other end of the capacitor C10 is respectively connected to the other end of the capacitor C11 and one end of the resistor R15, and is grounded, the OUTB pin of the chip N2 is respectively connected to one end of the resistor R16 and the other end of the resistor R77, the other end of the resistor R16 is respectively connected to the other end of the resistor R15 and the INB- pin of the chip N2, the INB+ pin of the chip N2 is connected to one end of the resistor R17, the other end of the resistor R17 is respectively connected to one end of the inductor L3 and one end of the capacitor C14, the other end of the inductor L3 is respectively connected to one end of the capacitor C13, one end of the capacitor C12, one end of the capacitor C15, one end of the capacitor C16, one end of the inductor L4 The INA+ pin of the chip N2 is connected to one end of the resistor R18, the other end of the resistor R18 is connected to one end of the capacitor C17 and the other end of the inductor L4, the other end of the capacitor C17 is connected to the other end of the capacitor C16 and the other end of the capacitor C15, the INA- pin of the chip N2 is connected to one end of the resistor R19 and the grounding resistor R20, the other end of the resistor R19 is connected to the OUTA pin of the chip N2 and the positive electrode of the diode D1;

[0020] The Vout pin of the chip N3 is also connected to one end of the capacitor C23 and one end of the capacitor C24 respectively, the other end of the capacitor C23 is connected to the other end of the capacitor C24, the GND pin of the chip N3, one end of the capacitor C22 and one end of the capacitor C21 respectively, the other end of the capacitor C22 is connected to the other end of the capacitor C21, the Vin pin of the chip N3 and the other end of the resistor R73 respectively.

[0021] The beneficial effect of the above further solution is that the present invention uses a voltage stabilizing circuit to effectively provide a stable voltage for the radio frequency power amplifier circuit, thereby ensuring the stable operation of the radio frequency power amplifier circuit.

[0022] Furthermore, the radio frequency power amplifier circuit includes an integrated voltage regulator chip N4, a power amplifier tube N5, a drain bias subcircuit, an output matching subcircuit and a gate bias subcircuit;

[0023] The Vin pin of the chip N4 is respectively connected to one end of the capacitor C33, the drain of the MOS tube Q3, one end of the capacitor C25 and the drain bias subcircuit, the other end of the capacitor C25 is respectively connected to the other end of the resistor RS2 and the gate bias subcircuit, the GND pin of the chip N4 is respectively connected to the other end of the resistor RS2, the other end of the capacitor C33 and one end of the capacitor C34, the other end of the capacitor C34 is respectively connected to the Vout pin of the chip N4, the gate bias subcircuit and one end of the inductor L5, the other end of the inductor L5 is respectively connected to one end of the capacitor C35, one end of the capacitor C36 and the fourth pin of the crystal oscillator Y1, the other end of the capacitor C35 is respectively connected to the other end of the resistor RS2 and the other end of the capacitor C36, the second pin of the crystal oscillator Y1 is connected to the other end of the resistor RS2, the third pin of the crystal oscillator Y1 is respectively connected to one end of the capacitor C37 and one end of the capacitor C38, the other end of the capacitor C37 is respectively connected to the other end of the capacitor C38 and the gate bias subcircuit;

[0024] The drain bias subcircuit includes polar capacitor C26, capacitor C27, capacitor C28, capacitor C29, inductor L6, capacitor C30, capacitor C31 and capacitor C32; the positive electrode of polar capacitor C26 is respectively connected to the Vin pin of the chip N4, one end of capacitor C27, one end of capacitor C28, one end of capacitor C29 and one end of inductor L6, the negative electrode of polar capacitor C26 is respectively connected to the other end of capacitor C27, the other end of capacitor C28, the other end of capacitor C29 and the other end of resistor RS2, the other end of inductor L6 is respectively connected to one end of capacitor C30, one end of capacitor C31, one end of capacitor C32, the drain of power amplifier tube N5 and the output matching subcircuit, the other end of capacitor C30 is respectively connected to the other end of resistor RS2, the other end of capacitor C31 and the other end of capacitor C32;

[0025] The gate bias subcircuit includes a capacitor C39, a resistor R25, a resistor R26, a resistor R27, a resistor R28 and a capacitor C40; one end of the capacitor C39 is respectively connected to the Vout pin of the chip N4 and one end of the resistor R25, the other end of the resistor R25 is connected to one end of the resistor R26, the other end of the resistor R26 is respectively connected to one end of the capacitor C40, one end of the resistor R27 and one end of the resistor R28, the other end of the capacitor C40 is respectively connected to the other end of the capacitor C39, the other end of the resistor R27, the source of the power amplifier tube N5, the output matching subcircuit and the other end of the capacitor C25, the other end of the resistor R28 is respectively connected to the other end of the capacitor C37 and the gate of the power amplifier tube N5;

[0026] The output matching subcircuit includes capacitor C41, capacitor C42, capacitor C43, capacitor C44, inductor L7, capacitor C45, capacitor C46, ​​capacitor C47 and capacitor C48; one end of capacitor C41 is respectively connected to the drain of power amplifier tube N5, one end of capacitor C42 and one end of inductor L6, the other end of capacitor C41 is respectively connected to the other end of capacitor C42, one end of inductor L7, one end of capacitor C43 and one end of capacitor C44, the other end of inductor L7 is respectively connected to the other end of capacitor C43, the other end of capacitor C44, one end of capacitor C45, one end of capacitor C46, ​​one end of capacitor C47 and one end of capacitor C48, the other end of capacitor C48 is connected to the 6th pin of relay Y4, the other end of capacitor C45 is respectively connected to the other end of capacitor C46, ​​the other end of capacitor C47 and the source of the power amplifier tube N5.

[0027] The beneficial effect of the above further solution is that the radio frequency power amplifier circuit used in the present invention adopts a matching solution made of lumped elements, which can provide effective transmission power for the transmitting antenna.

[0028] Furthermore, the receiving Bluetooth communication and control circuit includes a Bluetooth chip N15 and a voltage regulator chip N11;

[0029] The DVDD2 pin of the chip N15 is respectively connected to the grounding capacitor C155, the grounding capacitor C156, the DVDD1 pin of the chip N15, the 3.3BV power supply, the AVDD5 pin of the chip N15, the grounding capacitor C154, the grounding capacitor C153, the AVDD3 pin of the chip N15, the grounding capacitor C151, the grounding capacitor C152, the AVDD2 pin of the chip N15, the AVDD1 pin of the chip N15, the AVDD4 pin of the chip N15, the AVDD6 pin of the chip N15, the grounding capacitor C150, the grounding capacitor C149 and one end of the inductor L18, and the inductor The other end of L18 is respectively connected to the power supply VCC, one end of the capacitor C148, one end of the capacitor C147, and the Vout pin of the chip N11. The Vin pin of the chip N11 is respectively connected to the 5V power supply and one end of the capacitor C146. The other end of the capacitor C146 is respectively connected to the other end of the capacitor C147, the other end of the capacitor C148, and the GND pin of the chip N11 and grounded. The GND pin of the chip N15 is grounded. The NC pin of the chip N15 is connected to the 3.3BV power supply. The P1_0 pin of the chip N15 is connected to one end of the resistor R53. The other end of the resistor R53 is respectively connected to the resistor R54. The emitter of the transistor Q6 is connected to the other end of the resistor R54, the other end of the capacitor C114 and the positive electrode of the diode D5, and is grounded. The cathode of the diode D5 is connected to the collector of the transistor Q6 and the receiving switch circuit, respectively. The P1_1 pin of the chip N15 is connected to the receiving switch circuit. The P1_3 pin of the chip N15 is connected to one end of the resistor R68. The other end of the resistor R68 is connected to the positive electrode of the light-emitting diode LED3. The P1_4 pin of the chip N15 is connected to one end of the resistor R69. The other end of the resistor R69 is connected to the positive electrode of the light-emitting diode LED 4, the cathode of the light emitting diode LED4 is connected to the anode of the light emitting diode LED3 and is grounded, the P0_0 pin of the chip N15 is respectively connected to the grounding capacitor C166, the grounding capacitor C165, the grounding resistor R71 and one end of the resistor R70, the other end of the resistor R70 is connected to a 5.8V power supply, the P0_3 pin of the chip N15 is connected to one end of the resistor R67, the other end of the resistor R67 is connected to the rectifying and voltage stabilizing circuit, the P0_7 pin of the chip N15 is connected to the rectifying and voltage stabilizing circuit, the REST_N pin of the chip N15 is connected to one end of the resistor R66, the other end of the resistor R66 is connected to 3.3BV power supply connection, the GND pin of the chip N15 is grounded, the R_BIAS pin of the chip N15 is connected to the ground resistor R65, the DCOUPL pin of the chip N15 is connected to the ground capacitor C164, the XOSC_Q2 pin of the chip N15 is respectively connected to the ground capacitor C163 and the first pin of the crystal oscillator Y9, the second pin of the crystal oscillator Y9 is connected to the fourth pin of the crystal oscillator Y9 and grounded, the third pin of the crystal oscillator Y9 is respectively connected to the ground capacitor 162 and the XOSC_Q1 pin of the chip N15, the RF_N The pin is connected to one end of the capacitor C160, the other end of the capacitor C160 is respectively connected to one end of the inductor L15 and the grounded capacitor C161, the other end of the inductor L15 is respectively connected to one end of the inductor L16 and one end of the capacitor C158, the other end of the capacitor C158 is respectively connected to one end of the capacitor C157 and one end of the inductor L14, the other end of the inductor L14 is grounded, the other end of the capacitor C157 is connected to the RF_P pin of the chip N15, the other end of the inductor L16 is respectively connected to one end of the inductor L17 and one end of the grounded capacitor C159, and the other end of the inductor L17 is connected to the receiving antenna. .

[0030] The beneficial effect of the above further scheme is that the Bluetooth communication receiving and control circuit in the present invention is used to detect and collect the rectified voltage of the rectifier and voltage stabilizing circuit and control the switch of the switch array circuit, thereby realizing an adaptive matching scheme of the receiving module.

[0031] Further, the receiving switch circuit includes a receiving switch array subcircuit and a receiving matching subcircuit;

[0032] The receiving switch array subcircuit includes a relay Y7 and a relay Y8; the first pin of the relay Y7 is connected to a 12BV power supply, the second pin of the relay Y7 is respectively connected to a grounding capacitor C110, a grounding capacitor C109, one end of a capacitor C107 and one end of a capacitor C108, the other end of the capacitor C107 is respectively connected to the other end of the capacitor C108 and the seventh pin of the relay Y7, the third pin of the relay Y7 is respectively connected to one end of a receiving antenna and the sixth pin of the relay Y8, the fourth pin and the fifth pin of the relay Y7 are respectively connected to the receiving matching subcircuit, the sixth pin of the relay Y7 is connected to the second pin of the relay Y8, and the first pin of the relay Y7 is connected to the receiving matching subcircuit. The 8th pin of the relay Y8 is connected to the collector of the transistor Q6; the 5th pin and the 4th pin of the relay Y8 are respectively connected to the receiving matching sub-circuit, the 3rd pin of the relay Y8 is connected to the rectifying and voltage-stabilizing circuit, the 8th pin of the relay Y8 is connected to the 12BV power supply, the 1st pin of the relay Y8 is respectively connected to the collector of the transistor Q7 and the negative electrode of the diode D6, the base of the transistor Q7 is respectively connected to one end of the resistor R52, one end of the capacitor C113 and one end of the resistor R51, the other end of the resistor R51 is connected to the P1_1 pin of the chip N15, the other end of the capacitor C113 is respectively connected to the other end of the resistor R52, the emitter of the transistor Q7 and the positive electrode of the diode D4, and is grounded;

[0033] The receiving matching subcircuit includes a grounding capacitor C102, a grounding capacitor C101, a capacitor C99, a capacitor C100, a grounding capacitor C105, a grounding capacitor C106, a capacitor C103 and a capacitor C104; one end of the capacitor C99 is respectively connected to one end of the capacitor C100, the grounding capacitor C101, the grounding capacitor C102 and the 5th pin of the relay Y8, and the other end of the capacitor C99 is respectively connected to the other end of the capacitor C100 and the 4th pin of the relay Y8; one end of the capacitor C103 is respectively connected to the grounding capacitor C105, the grounding capacitor C106, one end of the capacitor C104 and the 4th pin of the relay Y7, and the other end of the capacitor C103 is respectively connected to the other end of the capacitor C104 and the 5th pin of the relay Y7.

[0034] The beneficial effect of the above further scheme is that the receiving switch circuit in the present invention adopts the design method of the switch array circuit, and utilizes the switching of different receiving matching circuits to improve the transmission efficiency of the transmitting and receiving antennas at different distances, thereby improving the overall efficiency of the system.

[0035] Furthermore, the number of the receiving matching sub-circuits is at least 2.

[0036] Furthermore, the rectification and voltage stabilization circuit includes a rectifier subcircuit, a filter subcircuit and a voltage stabilization subcircuit;

[0037] The rectifier circuit includes a capacitor C112, a capacitor C111, a diode D7, a diode D8, a diode D9 and a diode D10; one end of the capacitor C112 is respectively connected to the cathode of the diode D7, the cathode of the diode D8, one end of the capacitor C111 and the filtering subcircuit, the other end of the capacitor C112 is respectively connected to the other end of the capacitor C111, the anode of the diode D9, the anode of the diode D10 and the voltage stabilizing subcircuit, the anode of the diode D7 is respectively connected to the cathode of the diode D9 and the third pin of the relay Y8, the anode of the diode D8 is respectively connected to the cathode of the diode D10 and is grounded;

[0038] The filtering subcircuit includes a grounding capacitor C118, a grounding capacitor C119, a grounding capacitor C120, a grounding capacitor C121, a grounding capacitor C122, a grounding capacitor C123, a grounding capacitor C124, a grounding capacitor C125, a grounding capacitor C126, a grounding capacitor C127 and a grounding capacitor C128; the grounding capacitor C118 is respectively connected to one end of the capacitor C112, the grounding capacitor C119, the grounding capacitor C120, the grounding capacitor C121, the grounding capacitor C122, the grounding capacitor C123, the grounding capacitor C124, the grounding capacitor C125, the grounding capacitor C126, the grounding capacitor C127, the grounding capacitor C128, the other end of the resistor R67 and the voltage stabilizing subcircuit;

[0039] The voltage stabilizing subcircuit includes a power conversion chip N8 and a transistor N12; the Vin pin of the chip N8 is connected to the grounding capacitor C118, the COMP pin of the chip N8 is respectively connected to one end of the resistor R55 and one end of the capacitor C134, the other end of the resistor R55 is connected to one end of the capacitor C133, the other end of the capacitor C133 is respectively connected to the other end of the capacitor C112, the other end of the capacitor C134, one end of the resistor R56, the GND pin of the chip N8, one end of the resistor R58 and one end of the resistor RS4, the other end of the resistor RS4 is connected to the J4 interface of the rectifier and voltage stabilization output voltage end, the other end of the resistor R56 is connected to the RT / CLK pin of the chip N8, the FB pin of the chip N8 is respectively connected to the other end of the resistor R58 and one end of the resistor R57, the other end of the resistor R57 is respectively connected to the grounding Capacitor C136, grounding capacitor C137, one end of inductor L13, one end of resistor R49 and the source of MOS tube N9 are connected, the other end of resistor R49 is respectively connected to the collector of the transistor N12 and the gate of NOS tube N9, the drain of MOS tube N9 is respectively connected to the 5.8V power supply, the J3 interface of the rectifier and voltage-stabilized output voltage end and one end of capacitor C138, the other end of capacitor C138 is connected to the emitter of transistor N12 and grounded, the base of transistor N12 is connected to one end of resistor R50, the other end of resistor R50 is connected to the P0_7 pin of chip N15, the other end of inductor L13 is respectively connected to the negative electrode of diode D11, one end of capacitor C135 and the SW pin of chip N8, the positive electrode of diode D11 is grounded, and the other end of capacitor C135 is connected to the BOOT pin of chip N8.

[0040] The beneficial effects of the above further scheme are as follows: in the rectifying and voltage-stabilizing circuit of the present invention, the bridge rectifier circuit is composed of four rectifier diodes forming a bridge rectifier, which converts the high-frequency alternating current received by the magnetic resonance receiving antenna into direct current; the voltage stabilizing subcircuit is composed of a step-down integrated chip N8 and a feedback circuit, and the direct current after bridge rectification is sent to the step-down integrated chip N8, and the required voltage value can be set by adjusting the value of the feedback pin; the filtering subcircuit makes the output voltage more stable and clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the system structure of the present invention.

[0042] Figure 2 It is a system structure diagram of the present invention.

[0043] Figure 3 This is a circuit diagram for transmitting Bluetooth communication and control in the present invention.

[0044] Figure 4 This is the circuit diagram of the transmitting switch in the present invention.

[0045] Figure 5 This is a voltage stabilizing circuit diagram of the present invention.

[0046] Figure 6 This is a circuit diagram of a radio frequency power amplifier according to the present invention.

[0047] Figure 7 This is a circuit diagram for receiving Bluetooth communication and controlling the circuit in the present invention.

[0048] Figure 8 The present invention is a circuit connection diagram of a receiving switch circuit and a rectifying and voltage-stabilizing circuit.

[0049] Among them, 1-magnetic resonance transmitting module, 2-magnetic resonance receiving module, 3-transmitting Bluetooth communication and control circuit, 4-transmitting switch circuit, 5-voltage stabilizing circuit, 6-RF power amplifier circuit, 7-receiving Bluetooth communication and control circuit, 8-receiving switch circuit, and 9-rectifying voltage stabilizing circuit. DETAILED DESCRIPTION

[0050] The specific implementation modes of the present invention are described below so that those skilled in the art can understand the present invention. However, it should be clear that the present invention is not limited to the scope of the specific implementation modes. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the attached claims, these changes are obvious, and all inventions and creations utilizing the concept of the present invention are protected.

[0051] Example

[0052] The present invention discloses an adaptive matching system for magnetic resonance wireless charging, which utilizes a Bluetooth communication and control circuit to collect information between the transmitter and the receiver, and uses a plurality of matching schemes for transmitting and receiving antennas, and uses a switch array circuit to switch the matching schemes for transmitting and receiving antennas, thereby solving the over-coupling phenomenon caused by too close a distance and the under-coupling phenomenon caused by too far a distance, thereby improving the transmission efficiency between the transmitting and receiving antennas. Figure 1-Figure 2As shown, it includes a magnetic resonance transmitting module 1, and a magnetic resonance receiving module 2 connected to the magnetic resonance transmitting module 1; the magnetic resonance transmitting module 1 includes a transmitting Bluetooth communication and control circuit 3, a transmitting switch circuit 4, a voltage stabilizing circuit 5 and a transmitting antenna respectively connected to the transmitting Bluetooth communication and control circuit 3, and a radio frequency power amplification circuit 6 respectively connected to the transmitting switch circuit 4 and the voltage stabilizing circuit 5; the voltage stabilizing circuit 5 is connected to the transmitting switch circuit 4, and the transmitting antenna is connected to the magnetic resonance receiving module 2; the magnetic resonance receiving module 2 includes a receiving Bluetooth communication and control circuit 7, and a receiving antenna, a receiving switch circuit 8 and a rectifying and stabilizing circuit 9 respectively connected to the receiving Bluetooth communication and control circuit 7, the rectifying and stabilizing circuit 9 is connected to the receiving switch circuit 8, and the receiving antenna is connected to the transmitting antenna.

[0053] like Figure 3As shown, the transmitting Bluetooth communication and control circuit 3 includes a Bluetooth chip N14, a voltage stabilizing chip N13 and a voltage stabilizing chip N12; the DVDD2 pin of the chip N14 is respectively connected to the DVDD1 pin of the chip N14, a 3.3V power supply, a grounding capacitor C196 and a grounding capacitor C195, the GND pin of the chip N14 is grounded, the NC pin of the chip N14 is connected to the 3.3V power supply, the P1_0 pin of the chip N14 is connected to the transmitting switch circuit 4, the P1_1 pin of the chip N14 is connected to the cathode of the light emitting diode LED6, the anode of the light emitting diode LED6 is connected to one end of a resistor R79, the other end of the resistor R79 is respectively connected to one end of a resistor R78 and a 3.3V power supply, the other end of the resistor R78 is connected to the anode of the light emitting diode LED5, the cathode of the light emitting diode LED5 is connected to the The P1_2 pin of the chip N14 is connected, the P1_3 pin of the chip N14 is connected to the voltage stabilizing circuit 5, the P1_7 pin of the chip N14 is connected to the transmitting switch circuit 4, the P0_6 pin of the chip N14 is connected to one end of the resistor R77, the other end of the resistor R77 is connected to the voltage stabilizing circuit 5, the P0_7 pin of the chip N14 is connected to one end of the resistor R75, the other end of the resistor R75 is respectively connected to one end of the capacitor C189, one end of the resistor R74 and one end of the resistor R73, the other end of the capacitor C189 is connected to the other end of the resistor R74 and grounded, the other end of the resistor R73 is connected to the voltage stabilizing circuit 5, the AVDD5 pin of the chip N14 is respectively connected to the 3.3V power supply and the grounding capacitor C183, the AVDD3 pin of the chip N14 is respectively connected to the grounding capacitors C184 and 3.3V power supply, the AVDD2 pin of the chip N14, the AVDD1 pin of the chip N14, the AVDD4 pin of the chip N14, the grounding capacitor C182, the grounding capacitor C181, the grounding capacitor C180, the AVDD6 pin of the chip N14, one end of the capacitor C185, one end of the capacitor C179 and one end of the inductor L8 are connected, the other end of the capacitor C185 is connected to the other end of the capacitor C179 and is grounded, the other end of the inductor L8 is respectively connected to the power supply VCC, one end of the capacitor C178, one end of the capacitor C177 and the chip N13 The other end of the capacitor C178 is connected to the other end of the capacitor C177, the GND pin of the chip N14, one end of the capacitor C170 and one end of the capacitor C169 respectively. The other end of the capacitor C170 is connected to the Vin pin of the chip N13, the other end of the capacitor C169, one end of the capacitor C167, the Vout pin of the chip N12 and the transmitting switch circuit 4 respectively. The GND pin of the chip N12 is connected to one end of the capacitor C168 and the other end of the capacitor C167 respectively. The Vin pin of the chip N12 is connected to The other end of the capacitor C168 is connected to the voltage stabilizing circuit 5, the RF_P pin of the chip N14 is connected to one end of the capacitor C186, the other end of the capacitor C186 is respectively connected to one end of the inductor L9 and one end of the capacitor C187, the other end of the inductor L9 is grounded, the other end of the capacitor C187 is respectively connected to one end of the inductor L10 and one end of the inductor L11, the other end of the inductor L11 is respectively connected to the grounded capacitor C188 and one end of the inductor L12, the other end of the inductor L12 is connected to the transmitting antenna, the RF_N pin of the chip N14 is connected to the capacitor C19 0, the other end of capacitor C190 is connected to the grounded capacitor C191 and the other end of inductor L10 respectively, the XOSC_Q1 pin of the chip N14 is connected to the grounded capacitor C192 and one end of the crystal oscillator Y2 respectively, the other end of the crystal oscillator Y2 is connected to the XOSC_Q2 pin of the chip N14 and the grounded capacitor C193 respectively, the DCOUPL pin of the chip N14 is connected to the grounded capacitor C194, the R_BIAS pin of the chip N14 is connected to the grounded resistor R76, and the GND pin of the chip N14 is grounded. .

[0054] like Figure 4As shown, the transmitting switch circuit 4 includes a transmitting matching subcircuit and a transmitting switch array subcircuit; the transmitting switch array subcircuit includes a relay Y4, a relay Y5 and a relay Y6; the 5th pin and the 4th pin of the relay Y4 are respectively connected to the transmitting matching subcircuit, the 6th pin of the relay Y4 is connected to the RF power amplifier circuit 6, the 8th pin of the relay Y4 is connected to the cathode of the diode D4 and the collector of the transistor Q6, and the emitter of the transistor Q6 is respectively connected to the anode of the diode D4, one end of the resistor R32 and the capacitor C The first end of the relay Y4 is connected to the Vin pin of the chip N13, the third pin of the relay Y4 is connected to the third pin of the relay Y6, the seventh pin of the relay Y4 is connected to the sixth pin of the relay Y5; the fourth pin, the fifth pin, the seventh pin and the second pin of the relay Y5 are connected to the third pin of the relay Y6, and the base of the transistor Q6 is connected to the other end of the resistor R32, the other end of the capacitor C66 and one end of the resistor R31 respectively, the other end of the resistor R31 is connected to the P1_7 pin of the chip N14, the first pin of the relay Y4 is connected to the Vin pin of the chip N13, the third pin of the relay Y4 is connected to the third pin of the relay Y6, the seventh pin of the relay Y4 is connected to the sixth pin of the relay Y5; the fourth pin, the fifth pin, the seventh pin and the second pin of the relay Y5 are ... The pins are respectively connected to the transmitting matching sub-circuit, the first pin of the relay Y5 is connected to the Vin pin of the chip N13, the third pin of the relay Y5 is connected to the fourth pin of the relay Y6, the eighth pin of the relay Y5 is respectively connected to the cathode of the diode D3 and the collector of the transistor Q7, the base of the transistor Q7 is respectively connected to one end of the resistor R41, one end of the capacitor C96 and one end of the resistor R40, the other end of the resistor R40 is connected to the P1_0 pin of the chip N14, the anode of the diode D3 is respectively connected to the collector of the transistor Q7 The emitter of the transistor Y6 is connected to the other end of the resistor R41 and the other end of the capacitor C96, and is grounded; the first pin of the relay Y6 is connected to the Vin pin of the chip N13, the second pin of the relay Y6 is connected to the collector of the transistor Q9, the emitter of the transistor Q9 is respectively connected to one end of the resistor R43 and one end of the capacitor C97, and is grounded, the base of the transistor Q9 is respectively connected to the other end of the resistor R43, the other end of the capacitor C97 and one end of the resistor R42, and the other end of the resistor R42 is connected to the P1_0 pin of the chip N14;

[0055] The transmitting matching subcircuit includes capacitor C56, capacitor C57, capacitor C58, capacitor C59, capacitor C60, capacitor C61, capacitor C62, capacitor C63, capacitor C64, capacitor C65, capacitor C98, capacitor C92, capacitor C93, capacitor C94 and capacitor C95; one end of capacitor C56 is respectively connected to one end of capacitor C57, one end of capacitor C58 and the 5th pin of relay Y4, the other end of capacitor C56 is respectively connected to the other end of capacitor C57, the other end of capacitor C58, one end of capacitor C59, one end of capacitor C60 and the 4th pin of relay Y4, the other end of capacitor C59 is respectively connected to the other end of capacitor C60 and the voltage stabilizing circuit 5; one end of capacitor C61 is respectively connected to one end of capacitor C62, one end of capacitor C63 and the 5th pin of relay Y4. One end of the capacitor C98 is respectively connected to one end of the capacitor C92, one end of the capacitor C93 and the seventh pin of the relay Y5, the other end of the capacitor C98 is respectively connected to the other end of the capacitor C92, the other end of the capacitor C93, one end of the capacitor C94, the second pin of the relay Y5 and one end of the capacitor C95, the other end of the capacitor C95 is respectively connected to the other end of the capacitor C94 and the voltage stabilizing circuit 5, and the number of the transmitting matching sub-circuit is at least 2.

[0056] like Figure 5As shown, the voltage stabilizing circuit 5 includes a conversion chip N1, an operational amplifier chip N2, a MOS tube Q3 and a voltage stabilizing chip N3; the IN pin of the chip N1 is respectively connected to the grounding capacitor C3, one end of the resistor R1, the positive electrode of the polarity capacitor C2 and one end of the magnetic bead L1, the other end of the magnetic bead L1 is respectively connected to the positive electrode of the polarity capacitor C1 and the Vin end of the chip N12, the EN pin of the chip N1 is respectively connected to the other end of the resistor R1 and one end of the resistor R2, the AAM ... the one end of the resistor R1, the positive electrode of the polarity capacitor C2 and one end of the magnetic bead L1, the positive electrode of the polarity capacitor C1 and the Vin end of the chip N12, the EN pin of the chip N1 is respectively connected to the other end of the resistor R1 and one end of the resistor R2, the AAM pin of the chip N1 is respectively connected to the grounding capacitor C3, the one end of the resistor R1, the positive electrode of the polarity capacitor C2 and the positive electrode of the magnetic bead L1, the positive electrode of the polarity capacitor C1 and the Vin end of the chip N12, the EN pin of the chip N1 is respectively connected to the positive electrode of the polarity capacitor C1 and the positive electrode of the magnetic bead L1, the positive electrode of the polarity capacitor C1 and the positive electrode of the magnetic bead L1, the positive electrode of the magnetic bead L1 and The VCC pin of the chip N1 is connected to one end of the resistor R3, the VCC pin of the chip N1 is connected to one end of the capacitor C5, the other end of the capacitor C5 is respectively connected to the other end of the resistor R3, the other end of the resistor R2, the negative electrode of the polarity capacitor C2, the negative electrode of the polarity capacitor C1, the GND pin of the chip N1, the grounding resistor RS3, one end of the resistor R8, the emitter of the transistor Q4, one end of the resistor R22, one end of the resistor RS1 and one end of the resistor R22, and grounded, the FB pin of the chip N1 is respectively connected to one end of the resistor R6 and the capacitor One end of C6 is connected, the other end of resistor R6 is respectively connected to the other end of resistor R8, the cathode of diode D1 and one end of resistor R7, the other end of capacitor C6 is respectively connected to one end of resistor R5, the other end of resistor R5 is respectively connected to the other end of resistor R7, grounded capacitor C9, grounded capacitor C8, grounded capacitor C7, one end of inductor L2, one end of resistor R24 ​​and the source of MOS tube Q3, the other end of inductor L12 is respectively connected to the SW pin of chip N1 and one end of capacitor C4, capacitor C4 The other end of the transistor Q4 is connected to one end of the resistor R4, the other end of the resistor R4 is connected to the BST pin of the chip N1, the collector of the transistor Q4 is connected to one end of the resistor R23, the other end of the resistor R23 is respectively connected to the other end of the resistor R24 ​​and the gate of the MOS transistor Q3, the drain of the MOS transistor Q3 is connected to the RF power amplifier circuit 6, the base of the transistor Q4 is respectively connected to one end of the resistor R21 and the other end of the resistor R22, and the other end of the resistor R21 is connected to the P1_3 pin of the chip N14;

[0057] The VDD pin of the chip N2 is respectively connected to one end of the capacitor C10, one end of the capacitor C11 and the Vout pin of the chip N3, the other end of the capacitor C10 is respectively connected to the other end of the capacitor C11 and one end of the resistor R15, and is grounded, the OUTB pin of the chip N2 is respectively connected to one end of the resistor R16 and the other end of the resistor R77, the other end of the resistor R16 is respectively connected to the other end of the resistor R15 and the INB- pin of the chip N2, the INB+ pin of the chip N2 is connected to one end of the resistor R17, the other end of the resistor R17 is respectively connected to one end of the inductor L3 and one end of the capacitor C14, the other end of the inductor L3 is respectively connected to one end of the capacitor C13, one end of the capacitor C12, one end of the capacitor C15, one end of the capacitor C16, and one end of the inductor L4 , the other end of the resistor RS1, one end of the resistor RS2 and the other end of the capacitor C20 are connected, the other end of the resistor RS2 is connected to the RF power amplifier circuit 6, the other end of the capacitor C12 is respectively connected to the other end of the capacitor C13 and the other end of the capacitor C14, and is grounded, the VSS pin of the chip N2 is grounded, the INA+ pin of the chip N2 is connected to one end of the resistor R18, the other end of the resistor R18 is respectively connected to one end of the capacitor C17 and the other end of the inductor L4, the other end of the capacitor C17 is respectively connected to the other end of the capacitor C16 and the other end of the capacitor C15, the INA- pin of the chip N2 is respectively connected to one end of the resistor R19 and the grounding resistor R20, and the other end of the resistor R19 is respectively connected to the OUTA pin of the chip N2 and the positive electrode of the diode D1;

[0058] The Vout pin of the chip N3 is also connected to one end of the capacitor C23 and one end of the capacitor C24 respectively, the other end of the capacitor C23 is connected to the other end of the capacitor C24, the GND pin of the chip N3, one end of the capacitor C22 and one end of the capacitor C21 respectively, the other end of the capacitor C22 is connected to the other end of the capacitor C21, the Vin pin of the chip N3 and the other end of the resistor R73 respectively.

[0059] like Figure 6 As shown, the RF power amplifier circuit 6 includes an integrated voltage regulator chip N4, a power amplifier tube N5, a drain bias subcircuit, an output matching subcircuit and a gate bias subcircuit;

[0060] The Vin pin of the chip N4 is respectively connected to one end of the capacitor C33, the drain of the MOS tube Q3, one end of the capacitor C25 and the drain bias subcircuit, the other end of the capacitor C25 is respectively connected to the other end of the resistor RS2 and the gate bias subcircuit, the GND pin of the chip N4 is respectively connected to the other end of the resistor RS2, the other end of the capacitor C33 and one end of the capacitor C34, the other end of the capacitor C34 is respectively connected to the Vout pin of the chip N4, the gate bias subcircuit and one end of the inductor L5, the other end of the inductor L5 is respectively connected to one end of the capacitor C35, one end of the capacitor C36 and the fourth pin of the crystal oscillator Y1, the other end of the capacitor C35 is respectively connected to the other end of the resistor RS2 and the other end of the capacitor C36, the second pin of the crystal oscillator Y1 is connected to the other end of the resistor RS2, the third pin of the crystal oscillator Y1 is respectively connected to one end of the capacitor C37 and one end of the capacitor C38, the other end of the capacitor C37 is respectively connected to the other end of the capacitor C38 and the gate bias subcircuit;

[0061] The drain bias subcircuit includes polar capacitor C26, capacitor C27, capacitor C28, capacitor C29, inductor L6, capacitor C30, capacitor C31 and capacitor C32; the positive electrode of polar capacitor C26 is respectively connected to the Vin pin of the chip N4, one end of capacitor C27, one end of capacitor C28, one end of capacitor C29 and one end of inductor L6, the negative electrode of polar capacitor C26 is respectively connected to the other end of capacitor C27, the other end of capacitor C28, the other end of capacitor C29 and the other end of resistor RS2, the other end of inductor L6 is respectively connected to one end of capacitor C30, one end of capacitor C31, one end of capacitor C32, the drain of power amplifier tube N5 and the output matching subcircuit, the other end of capacitor C30 is respectively connected to the other end of resistor RS2, the other end of capacitor C31 and the other end of capacitor C32;

[0062] The gate bias subcircuit includes a capacitor C39, a resistor R25, a resistor R26, a resistor R27, a resistor R28 and a capacitor C40; one end of the capacitor C39 is respectively connected to the Vout pin of the chip N4 and one end of the resistor R25, the other end of the resistor R25 is connected to one end of the resistor R26, the other end of the resistor R26 is respectively connected to one end of the capacitor C40, one end of the resistor R27 and one end of the resistor R28, the other end of the capacitor C40 is respectively connected to the other end of the capacitor C39, the other end of the resistor R27, the source of the power amplifier tube N5, the output matching subcircuit and the other end of the capacitor C25, the other end of the resistor R28 is respectively connected to the other end of the capacitor C37 and the gate of the power amplifier tube N5;

[0063] The output matching subcircuit includes capacitor C41, capacitor C42, capacitor C43, capacitor C44, inductor L7, capacitor C45, capacitor C46, ​​capacitor C47 and capacitor C48; one end of capacitor C41 is respectively connected to the drain of power amplifier tube N5, one end of capacitor C42 and one end of inductor L6, the other end of capacitor C41 is respectively connected to the other end of capacitor C42, one end of inductor L7, one end of capacitor C43 and one end of capacitor C44, the other end of inductor L7 is respectively connected to the other end of capacitor C43, the other end of capacitor C44, one end of capacitor C45, one end of capacitor C46, ​​one end of capacitor C47 and one end of capacitor C48, the other end of capacitor C48 is connected to the 6th pin of relay Y4, the other end of capacitor C45 is respectively connected to the other end of capacitor C46, ​​the other end of capacitor C47 and the source of the power amplifier tube N5.

[0064] like Figure 7As shown, the receiving Bluetooth communication and control circuit 7 includes a Bluetooth chip N15 and a voltage stabilizing chip N11; the DVDD2 pin of the chip N15 is respectively connected to a grounding capacitor C155, a grounding capacitor C156, a DVDD1 pin of the chip N15, a 3.3BV power supply, an AVDD5 pin of the chip N15, a grounding capacitor C154, a grounding capacitor C153, an AVDD3 pin of the chip N15, a grounding capacitor C151, a grounding capacitor C152, an AVDD2 pin of the chip N15, an AVDD1 pin of the chip N15, an AVDD4 pin of the chip N15, an AVDD6 pin of the chip N15, and a grounding capacitor C15 0, the grounded capacitor C149 and one end of the inductor L18 are connected, the other end of the inductor L18 is respectively connected to the power supply VCC, one end of the capacitor C148, one end of the capacitor C147, and the Vout pin of the chip N11, the Vin pin of the chip N11 is respectively connected to the 5V power supply and one end of the capacitor C146, the other end of the capacitor C146 is respectively connected to the other end of the capacitor C147, the other end of the capacitor C148 and the GND pin of the chip N11, and grounded, the GND pin of the chip N15 is grounded, the NC pin of the chip N15 is connected to the 3.3BV power supply, the P1_0 pin of the chip N15 is connected to one end of the resistor R53, and the resistor The other end of R53 is respectively connected to one end of the resistor R54, one end of the capacitor C114 and the base of the transistor Q6, the emitter of the transistor Q6 is respectively connected to the other end of the resistor R54, the other end of the capacitor C114 and the positive electrode of the diode D5, and is grounded, the cathode of the diode D5 is respectively connected to the collector of the transistor Q6 and the receiving switch circuit 8, the P1_1 pin of the chip N15 is connected to the receiving switch circuit 8, the P1_3 pin of the chip N15 is connected to one end of the resistor R68, the other end of the resistor R68 is connected to the positive electrode of the light-emitting diode LED3, the P1_4 pin of the chip N15 is connected to one end of the resistor R69, the other end of the resistor R69 is connected to The positive electrode of the light emitting diode LED4 is connected, the negative electrode of the light emitting diode LED4 is connected to the positive electrode of the light emitting diode LED3 and is grounded, the P0_0 pin of the chip N15 is respectively connected to the grounding capacitor C166, the grounding capacitor C165, the grounding resistor R71 and one end of the resistor R70, the other end of the resistor R70 is connected to a 5.8V power supply, the P0_3 pin of the chip N15 is connected to one end of the resistor R67, the other end of the resistor R67 is connected to the rectifying and voltage stabilizing circuit 9, the P0_7 pin of the chip N15 is connected to the rectifying and voltage stabilizing circuit 9, the REST_N pin of the chip N15 is connected to one end of the resistor R66, the other end of the resistor R66 is connected to 3.3BV power supply connection, the GND pin of the chip N15 is grounded, the R_BIAS pin of the chip N15 is connected to the ground resistor R65, the DCOUPL pin of the chip N15 is connected to the ground capacitor C164, the XOSC_Q2 pin of the chip N15 is respectively connected to the ground capacitor C163 and the first pin of the crystal oscillator Y9, the second pin of the crystal oscillator Y9 is connected to the fourth pin of the crystal oscillator Y9 and grounded, the third pin of the crystal oscillator Y9 is respectively connected to the ground capacitor 162 and the XOSC_Q1 pin of the chip N15, the RF_N The pin is connected to one end of the capacitor C160, the other end of the capacitor C160 is respectively connected to one end of the inductor L15 and the grounded capacitor C161, the other end of the inductor L15 is respectively connected to one end of the inductor L16 and one end of the capacitor C158, the other end of the capacitor C158 is respectively connected to one end of the capacitor C157 and one end of the inductor L14, the other end of the inductor L14 is grounded, the other end of the capacitor C157 is connected to the RF_P pin of the chip N15, the other end of the inductor L16 is respectively connected to one end of the inductor L17 and one end of the grounded capacitor C159, and the other end of the inductor L17 is connected to the receiving antenna. .

[0065] like Figure 8 As shown, the receiving switch circuit 8 includes a receiving switch array subcircuit and a receiving matching subcircuit; the receiving switch array subcircuit includes a relay Y7 and a relay Y8; the first pin of the relay Y7 is connected to a 12BV power supply, the second pin of the relay Y7 is respectively connected to a grounding capacitor C110, a grounding capacitor C109, one end of a capacitor C107 and one end of a capacitor C108, the other end of the capacitor C107 is respectively connected to the other end of the capacitor C108 and the seventh pin of the relay Y7, the third pin of the relay Y7 is respectively connected to one end of a receiving antenna and the sixth pin of the relay Y8, the fourth pin and the fifth pin of the relay Y7 are respectively connected to the receiving matching subcircuit, the sixth pin of the relay Y7 is connected to the first pin of the relay Y8 2 pins, the 8th pin of the relay Y7 is connected to the collector of the transistor Q6; the 5th pin and the 4th pin of the relay Y8 are respectively connected to the receiving matching sub-circuit, the 3rd pin of the relay Y8 is connected to the rectifying and voltage-stabilizing circuit 9, the 8th pin of the relay Y8 is connected to the 12BV power supply, the 1st pin of the relay Y8 is respectively connected to the collector of the transistor Q7 and the negative electrode of the diode D6, the base of the transistor Q7 is respectively connected to one end of the resistor R52, one end of the capacitor C113 and one end of the resistor R51, the other end of the resistor R51 is connected to the P1_1 pin of the chip N15, the other end of the capacitor C113 is respectively connected to the other end of the resistor R52, the emitter of the transistor Q7 and the positive electrode of the diode D4, and is grounded;

[0066] The receiving matching subcircuit includes a grounding capacitor C102, a grounding capacitor C101, a capacitor C99, a capacitor C100, a grounding capacitor C105, a grounding capacitor C106, a capacitor C103 and a capacitor C104; one end of the capacitor C99 is respectively connected to one end of the capacitor C100, the grounding capacitor C101, the grounding capacitor C102 and the 5th pin of the relay Y8, and the other end of the capacitor C99 is respectively connected to the other end of the capacitor C100 and the 4th pin of the relay Y8; one end of the capacitor C103 is respectively connected to the grounding capacitor C105, the grounding capacitor C106, one end of the capacitor C104 and the 4th pin of the relay Y7, and the other end of the capacitor C103 is respectively connected to the other end of the capacitor C104 and the 5th pin of the relay Y7; the number of the receiving matching subcircuit is at least 2.

[0067] like Figure 8 As shown, the rectifier and voltage-stabilizing circuit 9 includes a rectifier circuit, a filter circuit and a voltage-stabilizing subcircuit; the rectifier circuit includes a capacitor C112, a capacitor C111, a diode D7, a diode D8, a diode D9 and a diode D10; one end of the capacitor C112 is respectively connected to the cathode of the diode D7, the cathode of the diode D8, one end of the capacitor C111 and the filtering subcircuit, the other end of the capacitor C112 is respectively connected to the other end of the capacitor C111, the anode of the diode D9, the anode of the diode D10 and the voltage-stabilizing subcircuit, the anode of the diode D7 is respectively connected to the cathode of the diode D9 and the third pin of the relay Y8, the anode of the diode D8 is respectively connected to the cathode of the diode D10 and is grounded;

[0068] The filtering subcircuit includes a grounding capacitor C118, a grounding capacitor C119, a grounding capacitor C120, a grounding capacitor C121, a grounding capacitor C122, a grounding capacitor C123, a grounding capacitor C124, a grounding capacitor C125, a grounding capacitor C126, a grounding capacitor C127 and a grounding capacitor C128; the grounding capacitor C118 is respectively connected to one end of the capacitor C112, the grounding capacitor C119, the grounding capacitor C120, the grounding capacitor C121, the grounding capacitor C122, the grounding capacitor C123, the grounding capacitor C124, the grounding capacitor C125, the grounding capacitor C126, the grounding capacitor C127, the grounding capacitor C128, the other end of the resistor R67 and the voltage stabilizing subcircuit;

[0069] The voltage stabilizing sub - circuit includes a power conversion chip N8 and a triode N12; the Vin pin of the chip N8 is connected to a grounding capacitor C118, the COMP pin of the chip N8 is respectively connected to one end of a resistor R55 and one end of a capacitor C134, the other end of the resistor R55 is connected to one end of a capacitor C133, and the other end of the capacitor C133 is respectively connected to the other end of a capacitor C112, the other end of the capacitor C134, one end of a resistor R56, the GND pin of the chip N8, one end of a resistor R58, and one end of a resistor RS4. The other end of the resistor RS4 is connected to the J4 interface of the rectified and regulated output voltage terminal, the other end of the resistor R56 is connected to the RT / CLK pin of the chip N8, the FB pin of the chip N8 is respectively connected to the other end of the resistor R58 and one end of a resistor R57, the other end of the resistor R57 is respectively connected to a grounding capacitor C136, a grounding capacitor C137, one end of an inductor L13, one end of a resistor R49, and the source electrode of a MOS tube N9. The other end of the resistor R49 is respectively connected to the collector of the triode N12 and the gate of the NOS tube N9. The drain of the MOS tube N9 is respectively connected to a 5.8V power supply, the J3 interface of the rectified and regulated output voltage terminal, and one end of a capacitor C138. The other end of the capacitor C138 is connected to the emitter of the triode N12 and grounded. The base of the triode N12 is connected to one end of a resistor R50, and the other end of the resistor R50 is connected to the P0_7 pin of the chip N15. The other end of the inductor L13 is respectively connected to the negative electrode of a diode D11, one end of a capacitor C135, and the SW pin of the chip N8. The positive electrode of the diode D11 is grounded, and the other end of the capacitor C135 is connected to the BOOT pin of the chip N8.

[0070] In this embodiment, the Bluetooth communication and control circuit 1 detects whether it is connected to the receiving Bluetooth communication and control circuit 7. If not connected, it will keep connecting until connected. After confirmation, it detects whether a device is accessed. Otherwise, it will keep detecting. After confirmation, it detects the rectified voltage Vreg1 under no - load, sets V1 as the matching switching voltage. When Vreg1 < V1, it selects to switch the antenna matching scheme of the magnetic resonance transmitting module 1 and the magnetic resonance receiving module 2. When Vreg1 > V1, it does not select to switch and directly starts charging. During the charging process, it detects the rectified voltage Vreg2 under load, sets Vhigh as the upper - limit voltage of the set switching matching scheme, and Vlow as the lower - limit voltage of the set switching matching scheme. When Vreg2 < Vlow or Vreg2 > Vhigh, it selects to switch the matching scheme of the magnetic resonance transmitting module 1 and the magnetic resonance receiving module 2, and then continues charging. Otherwise, it will not switch the scheme and continue charging until the charging current I < Imin, then stops charging.

[0071] In this embodiment, the power adapter supplies power to the RF power amplifier circuit 6 through the voltage regulator circuit 5, and supplies power to the transmitting Bluetooth communication and control circuit 5 at the same time, and then outputs power to the transmitting antenna through the RF power amplifier circuit 6. The transmitting and receiving antennas use the logic process in the above embodiment according to different transmitting and receiving antenna distances, and select different transmitting matching subcircuits and receiving matching subcircuits by switching the transmitting switch circuit 4 and the receiving switch circuit 8, and transfer energy to the receiving antenna, and then the rectifying and stabilizing circuit 9 converts it into direct current, and passes through the filtering subcircuit to reach the voltage regulator subcircuit, and the output voltage of the voltage regulator subcircuit is the working voltage of the electronic device. The transmitting Bluetooth communication and control circuit 3 described in the present invention is used to detect and collect the voltage of the RF power amplifier circuit 6 and control the switch of the switch array circuit, and the receiving Bluetooth communication and control circuit 7 is used to detect and collect the rectified voltage of the rectifying and stabilizing circuit 9 and control the switch of the switch array circuit. The present invention utilizes an adaptive matching scheme for magnetic resonance wireless power transmission, that is, utilizes a receiving Bluetooth communication and control circuit 3 and a transmitting Bluetooth communication and control circuit 7 to collect information between transmission and reception, and uses a plurality of transceiver antenna matching schemes and a switch array circuit to switch the transceiver antenna matching schemes, so as to solve the problem of poor transmission efficiency caused by over-coupling due to too close a distance and under-coupling due to too far a distance during magnetic resonance wireless power transmission, thereby greatly improving the transmission efficiency at different distances.

Claims

1. An adaptive matching system for magnetic resonance wireless charging, characterized in that: It comprises a magnetic resonance transmitting module (1) and a magnetic resonance receiving module (2) connected to the magnetic resonance transmitting module (1); The magnetic resonance transmitting module (1) comprises a transmitting Bluetooth communication and control circuit (3), a transmitting switch circuit (4) respectively connected to the transmitting Bluetooth communication and control circuit (3), a voltage stabilizing circuit (5) and a transmitting antenna, and a radio frequency power amplifying circuit (6) respectively connected to the transmitting switch circuit (4) and the voltage stabilizing circuit (5); the voltage stabilizing circuit (5) is connected to the transmitting switch circuit (4), and the transmitting antenna is coupled to the magnetic resonance receiving module (2); The magnetic resonance receiving module (2) comprises a receiving Bluetooth communication and control circuit (7), and a receiving antenna, a receiving switch circuit (8) and a rectifying and stabilizing circuit (9) respectively connected to the receiving Bluetooth communication and control circuit (7), the rectifying and stabilizing circuit (9) being connected to the receiving switch circuit (8), and the receiving antenna being coupled to the transmitting antenna; The power adapter supplies power to the radio frequency power amplifier circuit (6) through the voltage regulator circuit (5), and supplies power to the transmitting Bluetooth communication and control circuit (5) at the same time. The power is then output to the transmitting antenna through the radio frequency power amplifier circuit (6). Different transmitting matching subcircuits and receiving matching subcircuits are selected by switching the transmitting switch circuit (4) and the receiving switch circuit (8), and energy is transferred to the receiving antenna. The rectifying voltage regulator circuit (9) converts direct current into direct current, and passes through the filtering subcircuit to reach the voltage regulator subcircuit. The output voltage of the voltage regulator subcircuit is the working voltage of the electronic device. The receiving Bluetooth communication and control circuit (3) and the transmitting Bluetooth communication and control circuit (7) are used to collect information between transmission and reception.

2. The adaptive matching system for magnetic resonance wireless charging according to claim 1, characterized in that: The transmitting Bluetooth communication and control circuit (3) includes a Bluetooth chip N14, a voltage regulator chip N13 and a voltage regulator chip N12; The DVDD2 pin of the chip N14 is respectively connected to the DVDD1 pin of the chip N14, the 3.3V power supply, the grounding capacitor C196 and the grounding capacitor C195, the GND pin of the chip N14 is grounded, the NC pin of the chip N14 is connected to the 3.3V power supply, the P1_0 pin of the chip N14 is connected to the transmitting switch circuit (4), the P1_1 pin of the chip N14 is connected to the cathode of the light emitting diode LED6, the anode of the light emitting diode LED6 is connected to one end of a resistor R79, the other end of the resistor R79 is respectively connected to one end of a resistor R78 and the 3.3V power supply, the other end of the resistor R78 is connected to the anode of the light emitting diode LED5, the cathode of the light emitting diode LED5 is connected to the P1_2 pin of the chip N14, and the P The 1_3 pin of the chip N14 is connected to the voltage stabilizing circuit (5), the P1_7 pin of the chip N14 is connected to the transmitting switch circuit (4), the P0_6 pin of the chip N14 is connected to one end of the resistor R77, the other end of the resistor R77 is connected to the voltage stabilizing circuit (5), the P0_7 pin of the chip N14 is connected to one end of the resistor R75, the other end of the resistor R75 is respectively connected to one end of the capacitor C189, one end of the resistor R74 and one end of the resistor R73, the other end of the capacitor C189 is connected to the other end of the resistor R74 and is grounded, the other end of the resistor R73 is connected to the voltage stabilizing circuit (5), the AVDD5 pin of the chip N14 is respectively connected to the 3.3V power supply and the grounding capacitor C183, the AVDD3 pin of the chip N14 is respectively connected to the grounding capacitors C184 and 3.3V power supply, the AVDD2 pin of the chip N14, the AVDD1 pin of the chip N14, the AVDD4 pin of the chip N14, the grounding capacitor C182, the grounding capacitor C181, the grounding capacitor C180, the AVDD6 pin of the chip N14, one end of the capacitor C185, one end of the capacitor C179 and one end of the inductor L8 are connected, the other end of the capacitor C185 is connected to the other end of the capacitor C179 and is grounded, the other end of the inductor L8 is respectively connected to the power supply VCC, one end of the capacitor C178, one end of the capacitor C177 and the AVDD6 pin of the chip N14 The Vout terminal of the chip N12 is connected to the GND pin of the chip N12, the other end of the capacitor C178 is connected to the other end of the capacitor C177, the GND pin of the chip N14, one end of the capacitor C170 and one end of the capacitor C169, the other end of the capacitor C170 is connected to the Vin pin of the chip N13, the other end of the capacitor C169, one end of the capacitor C167, the Vout pin of the chip N12 and the transmitting switch circuit (4), the GND pin of the chip N12 is connected to one end of the capacitor C168 and the other end of the capacitor C167, the Vin pin of the chip N12 is connected to the Vout pin of the chip N12, and the transmitting switch circuit (4). The other end of the capacitor C168 is connected to the voltage stabilizing circuit (5), the RF_P pin of the chip N14 is connected to one end of the capacitor C186, the other end of the capacitor C186 is respectively connected to one end of the inductor L9 and one end of the capacitor C187, the other end of the inductor L9 is grounded, the other end of the capacitor C187 is respectively connected to one end of the inductor L10 and one end of the inductor L11, the other end of the inductor L11 is respectively connected to the grounded capacitor C188 and one end of the inductor L12, the other end of the inductor L12 is connected to the transmitting antenna, the RF_N pin of the chip N14 is connected to the capacitor C1 90, the other end of capacitor C190 is connected to the grounded capacitor C191 and the other end of inductor L10 respectively, the XOSC_Q1 pin of the chip N14 is connected to the grounded capacitor C192 and one end of the crystal oscillator Y2 respectively, the other end of the crystal oscillator Y2 is connected to the XOSC_Q2 pin of the chip N14 and the grounded capacitor C193 respectively, the DCOUPL pin of the chip N14 is connected to the grounded capacitor C194, the R_BIAS pin of the chip N14 is connected to the grounded resistor R76, and the GND pin of the chip N14 is grounded. .

3. The adaptive matching system for magnetic resonance wireless charging according to claim 2, characterized in that: The transmitting switch circuit (4) comprises a transmitting matching subcircuit and a transmitting switch array subcircuit; The transmitting switch array subcircuit comprises a relay Y4, a relay Y5 and a relay Y6; the 5th pin and the 4th pin of the relay Y4 are respectively connected to the transmitting matching subcircuit, the 6th pin of the relay Y4 is connected to the radio frequency power amplifier circuit (6), the 8th pin of the relay Y4 is connected to the cathode of the diode D4 and the collector of the transistor Q6, the emitter of the transistor Q6 is respectively connected to the anode of the diode D4, one end of the resistor R32 and one end of the capacitor C66, and is grounded, the base of the transistor Q6 is respectively connected to the cathode of the diode D4, one end of the resistor R32 and one end of the capacitor C66, and is grounded, The other end of the resistor R32, the other end of the capacitor C66 and one end of the resistor R31 are connected, the other end of the resistor R31 is connected to the P1_7 pin of the chip N14, the 1st pin of the relay Y4 is connected to the Vin pin of the chip N13, the 3rd pin of the relay Y4 is connected to the 3rd pin of the relay Y6, the 7th pin of the relay Y4 is connected to the 6th pin of the relay Y5; the 4th pin, the 5th pin, the 7th pin and the 2nd pin of the relay Y5 are respectively connected to the transmitting matching sub-circuit, The first pin of the relay Y5 is connected to the Vin pin of the chip N13, the third pin of the relay Y5 is connected to the fourth pin of the relay Y6, the eighth pin of the relay Y5 is respectively connected to the cathode of the diode D3 and the collector of the transistor Q7, the base of the transistor Q7 is respectively connected to one end of the resistor R41, one end of the capacitor C96 and one end of the resistor R40, the other end of the resistor R40 is connected to the P1_0 pin of the chip N14, the anode of the diode D3 is respectively connected to the emitter of the transistor Q7, the capacitor C96 and the collector of the transistor Q7, the base of the transistor Q7 is respectively connected to one end of the resistor R41, the capacitor C96 and the collector of the transistor Q7, the other end of the resistor R40 is respectively connected to the P1_0 pin of the chip N14, the cathode of the diode D3 is respectively connected to the emitter of the transistor Q7, the capacitor C96 and the collector ... 41 and the other end of the capacitor C96 are connected to the ground; the first pin of the relay Y6 is connected to the Vin pin of the chip N13, the second pin of the relay Y6 is connected to the collector of the transistor Q9, the emitter of the transistor Q9 is respectively connected to one end of the resistor R43 and one end of the capacitor C97, and is grounded, the base of the transistor Q9 is respectively connected to the other end of the resistor R43, the other end of the capacitor C97 and one end of the resistor R42, and the other end of the resistor R42 is connected to the P1_0 pin of the chip N14; The transmitting matching subcircuit comprises capacitor C56, capacitor C57, capacitor C58, capacitor C59, capacitor C60, capacitor C61, capacitor C62, capacitor C63, capacitor C64, capacitor C65, capacitor C98, capacitor C92, capacitor C93, capacitor C94 and capacitor C95; one end of capacitor C56 is respectively connected to one end of capacitor C57, one end of capacitor C58 and the 5th pin of relay Y4, the other end of capacitor C56 is respectively connected to the other end of capacitor C57, the other end of capacitor C58, one end of capacitor C59, one end of capacitor C60 and the 4th pin of relay Y4, the other end of capacitor C59 is respectively connected to the other end of capacitor C60 and the voltage stabilizing circuit (5); one end of capacitor C61 is respectively connected to one end of capacitor C62 , one end of the capacitor C63 and the 5th pin of the relay Y5, the other end of the capacitor C61 is respectively connected to the other end of the capacitor C62, the other end of the capacitor C63, one end of the capacitor C64, one end of the capacitor C65 and the 4th pin of the relay Y5, the other end of the capacitor C64 is respectively connected to the other end of the capacitor C65 and the voltage stabilizing circuit (5); one end of the capacitor C98 is respectively connected to one end of the capacitor C92, one end of the capacitor C93 and the 7th pin of the relay Y5, the other end of the capacitor C98 is respectively connected to the other end of the capacitor C92, the other end of the capacitor C93, one end of the capacitor C94, the 2nd pin of the relay Y5 and one end of the capacitor C95, the other end of the capacitor C95 is respectively connected to the other end of the capacitor C94 and the voltage stabilizing circuit (5).

4. The adaptive matching system for magnetic resonance wireless charging according to claim 3, characterized in that: The number of transmit matching sub-circuits is at least 2.

5. The adaptive matching system for magnetic resonance wireless charging according to claim 3, characterized in that: The voltage stabilizing circuit (5) comprises a conversion chip N1, an operational amplifier chip N2, a MOS tube Q3 and a voltage stabilizing chip N3; The IN pin of the chip N1 is respectively connected to the grounding capacitor C3, one end of the resistor R1, the positive electrode of the polarity capacitor C2 and one end of the magnetic bead L1, the other end of the magnetic bead L1 is respectively connected to the positive electrode of the polarity capacitor C1 and the Vin end of the chip N12, the EN pin of the chip N1 is respectively connected to the other end of the resistor R1 and one end of the resistor R2, the AAM pin of the chip N1 is connected to one end of the resistor R3, the VCC pin of the chip N1 is connected to one end of the capacitor C5, the other end of the capacitor C5 is respectively connected to the other end of the resistor R3, the other end of the resistor R2, the negative electrode of the polarity capacitor C2, the negative electrode of the polarity capacitor C1, the GND pin of the chip N1, the grounding resistor RS3, one end of the resistor R8, the emitter of the transistor Q4, one end of the resistor R22, one end of the resistor RS1 and one end of the resistor R22, and are grounded, the FB pin of the chip N1 is respectively connected to one end of the resistor R6 and one end of the capacitor C6, the other end of the resistor R6 is respectively connected to the resistor R8 The other end of the transistor Q4 is connected to the negative electrode of the diode D1 and one end of the resistor R7, the other end of the capacitor C6 is connected to one end of the resistor R5, the other end of the resistor R5 is respectively connected to the other end of the resistor R7, the grounding capacitor C9, the grounding capacitor C8, the grounding capacitor C7, one end of the inductor L2, one end of the resistor R24 ​​and the source of the MOS tube Q3, the other end of the inductor L12 is respectively connected to the SW pin of the chip N1 and one end of the capacitor C4, the other end of the capacitor C4 is connected to one end of the resistor R4, the other end of the resistor R4 is connected to the BST pin of the chip N1, the collector of the transistor Q4 is connected to one end of the resistor R23, the other end of the resistor R23 is respectively connected to the other end of the resistor R24 ​​and the gate of the MOS tube Q3, the drain of the MOS tube Q3 is connected to the RF power amplifier circuit (6), the base of the transistor Q4 is respectively connected to one end of the resistor R21 and the other end of the resistor R22, and the other end of the resistor R21 is connected to the P1_3 pin of the chip N14; The VDD pin of the chip N2 is respectively connected to one end of the capacitor C10, one end of the capacitor C11 and the Vout pin of the chip N3, the other end of the capacitor C10 is respectively connected to the other end of the capacitor C11 and one end of the resistor R15, and is grounded, the OUTB pin of the chip N2 is respectively connected to one end of the resistor R16 and the other end of the resistor R77, the other end of the resistor R16 is respectively connected to the other end of the resistor R15 and the INB- pin of the chip N2, the INB+ pin of the chip N2 is connected to one end of the resistor R17, the other end of the resistor R17 is respectively connected to one end of the inductor L3 and one end of the capacitor C14, the other end of the inductor L3 is respectively connected to one end of the capacitor C13, one end of the capacitor C12, one end of the capacitor C15, one end of the capacitor C16, one end of the inductor L4, The other end of the resistor RS1, one end of the resistor RS2 and the other end of the capacitor C20 are connected, the other end of the resistor RS2 is connected to the radio frequency power amplifier circuit (6), the other end of the capacitor C12 is respectively connected to the other end of the capacitor C13 and the other end of the capacitor C14, and is grounded, the VSS pin of the chip N2 is grounded, the INA+ pin of the chip N2 is connected to one end of the resistor R18, the other end of the resistor R18 is respectively connected to one end of the capacitor C17 and the other end of the inductor L4, the other end of the capacitor C17 is respectively connected to the other end of the capacitor C16 and the other end of the capacitor C15, the INA- pin of the chip N2 is respectively connected to one end of the resistor R19 and the grounding resistor R20, and the other end of the resistor R19 is respectively connected to the OUTA pin of the chip N2 and the positive electrode of the diode D1; The Vout pin of the chip N3 is also connected to one end of the capacitor C23 and one end of the capacitor C24 respectively, the other end of the capacitor C23 is connected to the other end of the capacitor C24, the GND pin of the chip N3, one end of the capacitor C22 and one end of the capacitor C21 respectively, the other end of the capacitor C22 is connected to the other end of the capacitor C21, the Vin pin of the chip N3 and the other end of the resistor R73 respectively.

6. The adaptive matching system for magnetic resonance wireless charging according to claim 5, characterized in that: The radio frequency power amplifier circuit (6) comprises an integrated voltage stabilizing chip N4, a power amplifier tube N5, a drain bias subcircuit, an output matching subcircuit and a gate bias subcircuit; The Vin pin of the chip N4 is respectively connected to one end of the capacitor C33, the drain of the MOS tube Q3, one end of the capacitor C25 and the drain bias subcircuit, the other end of the capacitor C25 is respectively connected to the other end of the resistor RS2 and the gate bias subcircuit, the GND pin of the chip N4 is respectively connected to the other end of the resistor RS2, the other end of the capacitor C33 and one end of the capacitor C34, the other end of the capacitor C34 is respectively connected to the Vout pin of the chip N4, the gate bias subcircuit and one end of the inductor L5, the other end of the inductor L5 is respectively connected to one end of the capacitor C35, one end of the capacitor C36 and the fourth pin of the crystal oscillator Y1, the other end of the capacitor C35 is respectively connected to the other end of the resistor RS2 and the other end of the capacitor C36, the second pin of the crystal oscillator Y1 is connected to the other end of the resistor RS2, the third pin of the crystal oscillator Y1 is respectively connected to one end of the capacitor C37 and one end of the capacitor C38, the other end of the capacitor C37 is respectively connected to the other end of the capacitor C38 and the gate bias subcircuit; The drain bias subcircuit includes polar capacitor C26, capacitor C27, capacitor C28, capacitor C29, inductor L6, capacitor C30, capacitor C31 and capacitor C32; the positive electrode of polar capacitor C26 is respectively connected to the Vin pin of the chip N4, one end of capacitor C27, one end of capacitor C28, one end of capacitor C29 and one end of inductor L6, the negative electrode of polar capacitor C26 is respectively connected to the other end of capacitor C27, the other end of capacitor C28, the other end of capacitor C29 and the other end of resistor RS2, the other end of inductor L6 is respectively connected to one end of capacitor C30, one end of capacitor C31, one end of capacitor C32, the drain of power amplifier tube N5 and the output matching subcircuit, the other end of capacitor C30 is respectively connected to the other end of resistor RS2, the other end of capacitor C31 and the other end of capacitor C32; The gate bias subcircuit includes a capacitor C39, a resistor R25, a resistor R26, a resistor R27, a resistor R28 and a capacitor C40; one end of the capacitor C39 is respectively connected to the Vout pin of the chip N4 and one end of the resistor R25, the other end of the resistor R25 is connected to one end of the resistor R26, the other end of the resistor R26 is respectively connected to one end of the capacitor C40, one end of the resistor R27 and one end of the resistor R28, the other end of the capacitor C40 is respectively connected to the other end of the capacitor C39, the other end of the resistor R27, the source of the power amplifier tube N5, the output matching subcircuit and the other end of the capacitor C25, the other end of the resistor R28 is respectively connected to the other end of the capacitor C37 and the gate of the power amplifier tube N5; The output matching subcircuit includes capacitor C41, capacitor C42, capacitor C43, capacitor C44, inductor L7, capacitor C45, capacitor C46, ​​capacitor C47 and capacitor C48; one end of capacitor C41 is respectively connected to the drain of power amplifier tube N5, one end of capacitor C42 and one end of inductor L6, the other end of capacitor C41 is respectively connected to the other end of capacitor C42, one end of inductor L7, one end of capacitor C43 and one end of capacitor C44, the other end of inductor L7 is respectively connected to the other end of capacitor C43, the other end of capacitor C44, one end of capacitor C45, one end of capacitor C46, ​​one end of capacitor C47 and one end of capacitor C48, the other end of capacitor C48 is connected to the 6th pin of relay Y4, the other end of capacitor C45 is respectively connected to the other end of capacitor C46, ​​the other end of capacitor C47 and the gate of the power amplifier tube N5.

7. The adaptive matching system for magnetic resonance wireless charging according to claim 1, characterized in that: The receiving Bluetooth communication and control circuit (7) comprises a Bluetooth chip N15 and a voltage stabilizing chip N11; The DVDD2 pin of the chip N15 is respectively connected to the grounding capacitor C155, the grounding capacitor C156, the DVDD1 pin of the chip N15, the 3.3BV power supply, the AVDD5 pin of the chip N15, the grounding capacitor C154, the grounding capacitor C153, the AVDD3 pin of the chip N15, the grounding capacitor C151, the grounding capacitor C152, the AVDD2 pin of the chip N15, the AVDD1 pin of the chip N15, the AVDD4 pin of the chip N15, the AVDD6 pin of the chip N15, the grounding capacitor C150, the grounding capacitor C149 and one end of the inductor L18, and the inductor L18 The other end is respectively connected to the power supply VCC, one end of the capacitor C148, one end of the capacitor C147 and the Vout pin of the chip N11, the Vin pin of the chip N11 is respectively connected to the 5V power supply and one end of the capacitor C146, the other end of the capacitor C146 is respectively connected to the other end of the capacitor C147, the other end of the capacitor C148 and the GND pin of the chip N11, and grounded, the GND pin of the chip N15 is grounded, the NC pin of the chip N15 is connected to the 3.3BV power supply, the P1_0 pin of the chip N15 is connected to one end of the resistor R53, the other end of the resistor R53 is respectively connected to one end of the resistor R54, the capacitor One end of C114 is connected to the base of transistor Q6, the emitter of transistor Q6 is respectively connected to the other end of resistor R54, the other end of capacitor C114 and the positive electrode of diode D5, and is grounded, the negative electrode of diode D5 is respectively connected to the collector of transistor Q6 and receiving switch circuit (8), the P1_1 pin of chip N15 is connected to the receiving switch circuit (8), the P1_3 pin of chip N15 is connected to one end of resistor R68, the other end of resistor R68 is connected to the positive electrode of light-emitting diode LED3, the P1_4 pin of chip N15 is connected to one end of resistor R69, the other end of resistor R69 is connected to the positive electrode of light-emitting diode LED4, and the P1_5 pin of chip N15 is connected to one end of resistor R69, the other end of resistor R69 is connected to the positive electrode of light-emitting diode LED4. The cathode of the light emitting diode LED4 is connected to the anode of the light emitting diode LED3 and is grounded; the P0_0 pin of the chip N15 is respectively connected to the grounding capacitor C166, the grounding capacitor C165, the grounding resistor R71 and one end of the resistor R70; the other end of the resistor R70 is connected to a 5.8V power supply; the P0_3 pin of the chip N15 is connected to one end of the resistor R67; the other end of the resistor R67 is connected to the rectifying and voltage stabilizing circuit (9); the P0_7 pin of the chip N15 is connected to the rectifying and voltage stabilizing circuit (9); the REST_N pin of the chip N15 is connected to one end of the resistor R66; the other end of the resistor R66 is connected to 3.3BV power supply connection, the GND pin of the chip N15 is grounded, the R_BIAS pin of the chip N15 is connected to the ground resistor R65, the DCOUPL pin of the chip N15 is connected to the ground capacitor C164, the XOSC_Q2 pin of the chip N15 is respectively connected to the ground capacitor C163 and the first pin of the crystal oscillator Y9, the second pin of the crystal oscillator Y9 is connected to the fourth pin of the crystal oscillator Y9 and grounded, the third pin of the crystal oscillator Y9 is respectively connected to the ground capacitor 162 and the XOSC_Q1 pin of the chip N15, the RF_N The pin is connected to one end of the capacitor C160, the other end of the capacitor C160 is respectively connected to one end of the inductor L15 and the grounded capacitor C161, the other end of the inductor L15 is respectively connected to one end of the inductor L16 and one end of the capacitor C158, the other end of the capacitor C158 is respectively connected to one end of the capacitor C157 and one end of the inductor L14, the other end of the inductor L14 is grounded, the other end of the capacitor C157 is connected to the RF_P pin of the chip N15, the other end of the inductor L16 is respectively connected to one end of the inductor L17 and one end of the grounded capacitor C159, and the other end of the inductor L17 is connected to the receiving antenna. .

8. The adaptive matching system for magnetic resonance wireless charging according to claim 7, characterized in that: The receiving switch circuit (8) comprises a receiving switch array subcircuit and a receiving matching subcircuit; The receiving switch array subcircuit includes a relay Y7 and a relay Y8; the first pin of the relay Y7 is connected to a 12BV power supply, the second pin of the relay Y7 is respectively connected to a grounding capacitor C110, a grounding capacitor C109, one end of a capacitor C107 and one end of a capacitor C108, the other end of the capacitor C107 is respectively connected to the other end of the capacitor C108 and the seventh pin of the relay Y7, the third pin of the relay Y7 is respectively connected to one end of a receiving antenna and the sixth pin of the relay Y8, the fourth pin and the fifth pin of the relay Y7 are respectively connected to the receiving matching subcircuit, the sixth pin of the relay Y7 is connected to the second pin of the relay Y8, and the eighth pin of the relay Y7 is connected to the receiving matching subcircuit. The pin 5 and the pin 4 of the relay Y8 are respectively connected to the receiving matching sub-circuit, the pin 3 of the relay Y8 is connected to the rectifying and voltage stabilizing circuit (9), the pin 8 of the relay Y8 is connected to the 12BV power supply, the pin 1 of the relay Y8 is respectively connected to the collector of the transistor Q7 and the cathode of the diode D6, the base of the transistor Q7 is respectively connected to one end of the resistor R52, one end of the capacitor C113 and one end of the resistor R51, the other end of the resistor R51 is connected to the P1_1 pin of the chip N15, the other end of the capacitor C113 is respectively connected to the other end of the resistor R52, the emitter of the transistor Q7 and the anode of the diode D4, and is grounded; The receiving matching subcircuit includes a grounding capacitor C102, a grounding capacitor C101, a capacitor C99, a capacitor C100, a grounding capacitor C105, a grounding capacitor C106, a capacitor C103 and a capacitor C104; one end of the capacitor C99 is respectively connected to one end of the capacitor C100, the grounding capacitor C101, the grounding capacitor C102 and the 5th pin of the relay Y8, and the other end of the capacitor C99 is respectively connected to the other end of the capacitor C100 and the 4th pin of the relay Y8; one end of the capacitor C103 is respectively connected to the grounding capacitor C105, the grounding capacitor C106, one end of the capacitor C104 and the 4th pin of the relay Y7, and the other end of the capacitor C103 is respectively connected to the other end of the capacitor C104 and the 5th pin of the relay Y7.

9. The adaptive matching system for magnetic resonance wireless charging according to claim 8, characterized in that: The number of the receiving matching sub-circuits is at least 2.

10. The adaptive matching system for magnetic resonance wireless charging according to claim 8, characterized in that: The rectifying and voltage-stabilizing circuit (9) comprises a rectifying subcircuit, a filtering subcircuit and a voltage-stabilizing subcircuit; The rectifier circuit includes a capacitor C112, a capacitor C111, a diode D7, a diode D8, a diode D9 and a diode D10; one end of the capacitor C112 is respectively connected to the cathode of the diode D7, the cathode of the diode D8, one end of the capacitor C111 and the filtering subcircuit, the other end of the capacitor C112 is respectively connected to the other end of the capacitor C111, the anode of the diode D9, the anode of the diode D10 and the voltage stabilizing subcircuit, the anode of the diode D7 is respectively connected to the cathode of the diode D9 and the third pin of the relay Y8, the anode of the diode D8 is respectively connected to the cathode of the diode D10 and is grounded; The filtering subcircuit includes a grounding capacitor C118, a grounding capacitor C119, a grounding capacitor C120, a grounding capacitor C121, a grounding capacitor C122, a grounding capacitor C123, a grounding capacitor C124, a grounding capacitor C125, a grounding capacitor C126, a grounding capacitor C127 and a grounding capacitor C128; the grounding capacitor C118 is respectively connected to one end of the capacitor C112, the grounding capacitor C119, the grounding capacitor C120, the grounding capacitor C121, the grounding capacitor C122, the grounding capacitor C123, the grounding capacitor C124, the grounding capacitor C125, the grounding capacitor C126, the grounding capacitor C127, the grounding capacitor C128, the other end of the resistor R67 and the voltage stabilizing subcircuit; The voltage stabilizing subcircuit includes a power conversion chip N8 and a transistor N12; the Vin pin of the chip N8 is connected to the grounding capacitor C118, the COMP pin of the chip N8 is respectively connected to one end of the resistor R55 and one end of the capacitor C134, the other end of the resistor R55 is connected to one end of the capacitor C133, the other end of the capacitor C133 is respectively connected to the other end of the capacitor C112, the other end of the capacitor C134, one end of the resistor R56, the GND pin of the chip N8, one end of the resistor R58 and one end of the resistor RS4, the other end of the resistor RS4 is connected to the J4 interface of the rectifier and voltage stabilization output voltage end, the other end of the resistor R56 is connected to the RT / CLK pin of the chip N8, the FB pin of the chip N8 is respectively connected to the other end of the resistor R58 and one end of the resistor R57, the other end of the resistor R57 is respectively connected to the grounding Capacitor C136, grounding capacitor C137, one end of inductor L13, one end of resistor R49 and the source of MOS tube N9 are connected, the other end of resistor R49 is respectively connected to the collector of the transistor N12 and the gate of NOS tube N9, the drain of MOS tube N9 is respectively connected to the 5.8V power supply, the J3 interface of the rectifier and voltage-stabilized output voltage end and one end of capacitor C138, the other end of capacitor C138 is connected to the emitter of transistor N12 and grounded, the base of transistor N12 is connected to one end of resistor R50, the other end of resistor R50 is connected to the P0_7 pin of chip N15, the other end of inductor L13 is respectively connected to the negative electrode of diode D11, one end of capacitor C135 and the SW pin of chip N8, the positive electrode of diode D11 is grounded, and the other end of capacitor C135 is connected to the BOOT pin of chip N8.

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