Wireless charging system

Abstract

The utility model provides a wireless charging system, which comprises an adapter, a magnetic resonance transmitting module, a magnetic resonance receiving module, a magnetic coupling transmitting module and a magnetic coupling receiving module, the magnetic resonance emission module is connected with the adapter, the adapter supplies power to the magnetic resonance emission module, and the magnetic resonance emission module is used for emitting an alternating electromagnetic field; the magnetic resonance receiving module is matched with the magnetic resonance transmitting module and is used for coupling the alternating electromagnetic field transmitted by the magnetic resonance transmitting module and outputting electric energy; the magnetic coupling transmitting module is connected with the magnetic resonance receiving module and is used for converting the electric energy into a second alternating electromagnetic field; the magnetic coupling receiving module is matched with the magnetic coupling transmitting module and is used for coupling the second alternating electromagnetic field transmitted by the magnetic coupling transmitting module and outputting stable electric energy to charge a battery of the mobile terminal, and the magnetic coupling receiving module is arranged in the mobile terminal; the magnetic resonance receiving module and the magnetic coupling transmitting module are integrated in the magnetic attraction charging disc; the magnetic attraction charging disc is connected with the mobile terminal through magnetic attraction.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless charging, in particular to a wireless charging system. Background Art

[0002] When wireless charging first entered the commercial field, it represented the concept of freeing the charging cable to charge the mobile phone. However, when using existing wireless chargers, the mobile phone must be placed in the designated position of the charger / charging plate / charging stand, and can only provide limited functions such as playing music / playing videos during the charging process. It is impossible to truly play while charging, and it is impossible to hold it in your hand for normal use such as playing games, making calls without using headphones / opening the external speaker function, and the experience is poor.

[0003] In order to solve this problem, several improved products have appeared on the market, such as the smart wireless charging plate launched by Xiaomi / Huawei, which can realize wireless charging of mobile phones / earphones / watches and other products by freely placing them on a flat surface of a charger. However, this method still requires the mobile phone to be placed flat on a designated plane, and it is impossible to achieve the experience of playing and charging at the same time; the other is the magsafe magnetic wireless charger product that Apple has been promoting in recent years. This product can be magnetically attached to the back of the mobile phone for wireless charging. During the charging process, users can use the mobile phone more freely, but this product still has a wire connected to the charging plate, and users cannot achieve wireless charging in a true sense. Utility Model Content

[0004] In order to solve the above problems, the purpose of the utility model is to provide a wireless charging system, which combines magnetic resonance technology with magnetic coupling technology to better realize the freedom of mobile phone use during wireless charging.

[0005] The utility model is realized by the following technical solutions:

[0006] A wireless charging system includes an adapter, the adapter is used to connect to the mains and output power supply, and also includes: a magnetic resonance transmitting module, the magnetic resonance transmitting module is connected to the adapter, the adapter supplies power to the magnetic resonance transmitting module, the magnetic resonance transmitting module is used to emit an alternating electromagnetic field; a magnetic resonance receiving module, the magnetic resonance receiving module matches the magnetic resonance transmitting module, is used to couple the alternating electromagnetic field emitted by the magnetic resonance transmitting module, and output electric energy; a magnetic coupling transmitting module, the magnetic coupling transmitting module is connected to the magnetic resonance receiving module, is used to convert the electric energy into a second alternating electromagnetic field; a magnetic coupling receiving module, the magnetic coupling receiving module matches the magnetic coupling transmitting module, is used to couple the second alternating electromagnetic field emitted by the magnetic coupling transmitting module, and output stable electric energy to charge a battery of a mobile terminal, the magnetic coupling receiving module is arranged in the mobile terminal; wherein the magnetic resonance receiving module and the magnetic coupling transmitting module are integrated in a magnetic charging tray; the magnetic charging tray is connected to the mobile terminal by magnetic attraction.

[0007] Furthermore, the magnetic resonance transmitting module includes a main control chip, a DCDC voltage regulating module, a complementary signal generating chip, a communication module, a MOS driving chipset, a full-bridge inverter circuit and a high-frequency resonance component; the main control chip, the DCDC voltage regulating module, the communication module and the MOS driving chipset are all connected to the adapter; the full-bridge inverter circuit is connected to the output end of the DCDC voltage regulating module, the communication module and the complementary signal generating chip are respectively connected to the main control chip, the MOS driving chipset is respectively connected to the complementary signal generating chip and the full-bridge inverter circuit, and the high-frequency resonance component is connected to the output end of the full-bridge inverter circuit; the main control chip is used to send a control signal to the MOS driving chipset, and the MOS driving chipset is used to drive the switching of the switch tube in the full-bridge inverter circuit according to the control signal; the high-frequency resonance component is used to generate an alternating electromagnetic field, and the DCDC voltage regulating module supplies power to the full-bridge inverter circuit.

[0008] Furthermore, the magnetic resonance transmitting module includes a main control chip, a step-down module, a complementary signal generating chip, a communication module, a MOS driving chipset, a full-bridge inverter circuit and a high-frequency resonance component; the step-down module and the full-bridge inverter circuit are respectively connected to the adapter, and the main control chip, the communication module and the MOS driving chipset are respectively connected to the output end of the step-down module; the communication module and the complementary signal generating chip are respectively connected to the main control chip, the MOS driving chipset is respectively connected to the complementary signal generating chip and the full-bridge inverter circuit, and the high-frequency resonance component is connected to the output end of the full-bridge inverter circuit; the main control chip is used to send a control signal to the MOS driving chipset, and the MOS driving chipset is used to drive the switching of the switch tube in the full-bridge inverter circuit according to the control signal; the high-frequency resonance component is used to generate an alternating electromagnetic field, and the adapter is used to power the full-bridge inverter circuit.

[0009] Furthermore, the resonant frequency of the high-frequency resonant component is 6.78Mhz or 13.56Mhz.

[0010] Furthermore, the magnetic resonance receiving module includes an LC resonance circuit, a rectifier circuit and a voltage-stabilizing output circuit connected in sequence, the LC resonance circuit is used to couple the changing magnetic field of the magnetic resonance transmitting module and generate a high-frequency sine wave, the rectifier circuit rectifies the high-frequency sine wave into direct current, and the voltage-stabilizing output circuit is used to receive the direct current and output the stable electric energy; wherein, a storage capacitor is connected in parallel between the positive and negative output terminals of the rectifier circuit.

[0011] Furthermore, the frequency of the LC resonant circuit is consistent with the resonant frequency of the changing magnetic field generated in the magnetic resonance transmitting module.

[0012] Furthermore, the magnetic coupling transmitting module includes a second main control chip, a second DCDC voltage regulating circuit, a second complementary signal generating chip, a second communication module, a second MOS driving chipset, a second full-bridge inverter circuit and a second resonant component; the second main control chip and the second DCDC voltage regulating circuit are both connected to the output end of the magnetic resonance receiving module, the second communication module and the second complementary signal generating chip are respectively connected to the second main control chip, the second MOS driving chipset is respectively connected to the second complementary signal generating chip and the second full-bridge inverter circuit, and the second resonant component is connected to the output end of the second full-bridge inverter circuit; the second main control chip is used to send a control signal to the second MOS driving chipset, and the second MOS driving chipset is used to drive the switching of the switch tube in the second full-bridge inverter circuit according to the control signal; the second resonant component is used to generate an alternating electromagnetic field, and the output end of the magnetic resonance receiving module supplies power to the second full-bridge inverter circuit.

[0013] Furthermore, the magnetic coupling receiving module includes a coupling receiving LC component, a rectifier circuit and a voltage-stabilizing output circuit connected in sequence, the output end of the voltage-stabilizing output circuit is connected to the battery of the mobile terminal, or the output end of the voltage-stabilizing output circuit is connected to the battery of the mobile terminal through a step-down circuit; the coupling receiving LC component is used to couple with the second alternating electromagnetic field and generate alternating current, the rectifier circuit rectifies the alternating current into direct current, and the voltage-stabilizing output circuit is used to receive the direct current and output the stable electric energy to charge the battery of the mobile terminal; wherein, a storage capacitor is connected in parallel between the positive and negative output ends of the rectifier circuit.

[0014] Furthermore, the wireless charging system also includes a charging transmitting base, and the adapter and the magnetic resonance transmitting module are integrated in the wireless charging transmitting base.

[0015] Compared with the prior art, the technical solution of the utility model and its beneficial effects are as follows:

[0016] (1) The magnetic charging disk of the utility model is adsorbed on the mobile terminal to charge the mobile terminal, and the adapter provides energy to the magnetic charging disk (magnetic resonance receiving module and magnetic coupling transmitting module) through the magnetic resonance transmitting module. The cooperation between the magnetic resonance transmitting module and the magnetic resonance receiving module realizes long-distance wireless charging between the magnetic resonance transmitting module and the magnetic charging disk. That is, when charging, the mobile terminal has a moving space within the magnetic field coupling range of the magnetic resonance transmitting module and the magnetic resonance receiving module, and there is no charging cable connection, thereby realizing the free and unrestrained use of the mobile phone during wireless charging.

[0017] (2) The resonant frequency of the high-frequency resonant component of the utility model is 6.78Mhz or 13.56Mhz, and it utilizes spatial resonant coupling rather than field magnetic coupling, thereby greatly improving the charging distance of the product.

[0018] (3) The frequency of the LC resonant circuit of the magnetic resonance receiving module of the utility model is consistent with the resonant frequency of the changing magnetic field generated in the magnetic resonance transmitting module, so that the LC resonant circuit can couple to the energy of this frequency in a space at a longer distance, thereby increasing the activity range of the mobile terminal during wireless charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a principle block diagram of a wireless charging system provided by an embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of a magnetic resonance transmitting module provided by an embodiment of the utility model;

[0021] Figure 3 It is another principle diagram of the magnetic resonance transmitting module provided by the embodiment of the utility model;

[0022] Figure 4 It is a schematic diagram of a magnetic resonance receiving module and a magnetic coupling transmitting module provided in an embodiment of the utility model;

[0023] Figure 5 It is a schematic diagram of a magnetic coupling receiving module provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiment of the utility model clearer, the technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 A wireless charging system includes an adapter, a magnetic resonance transmitting module, a magnetic resonance receiving module, a magnetic coupling transmitting module and a magnetic coupling receiving module. The adapter is used to connect an external power supply and output a power supply. The magnetic resonance transmitting module is connected to the adapter, and the adapter supplies power to the magnetic resonance transmitting module. The magnetic resonance transmitting module is used to emit an alternating electromagnetic field. The magnetic resonance receiving module matches the magnetic resonance transmitting module, and is used to couple the alternating electromagnetic field emitted by the magnetic resonance transmitting module and output electric energy. The magnetic coupling transmitting module is connected to the magnetic resonance receiving module, and is used to convert the electric energy into a second alternating electromagnetic field. The magnetic coupling receiving module matches the magnetic coupling transmitting module, and is used to couple the second alternating electromagnetic field emitted by the magnetic coupling transmitting module and output stable electric energy to charge the battery of the mobile terminal. The magnetic coupling receiving module is arranged in the mobile terminal. The magnetic resonance receiving module and the magnetic coupling transmitting module are integrated in a magnetic charging tray, and the magnetic charging tray is connected to the mobile terminal by magnetic attraction.

[0026] The magnetic charging plate is adsorbed on the mobile terminal to charge the mobile terminal, and the adapter provides energy to the magnetic charging plate (magnetic resonance receiving module and magnetic coupling transmitting module) through the magnetic resonance transmitting module. The cooperation between the magnetic resonance transmitting module and the magnetic resonance receiving module realizes long-distance wireless charging between the magnetic resonance transmitting module and the magnetic charging plate. That is, when charging, the mobile terminal has a moving space within the magnetic field coupling range of the magnetic resonance transmitting module and the magnetic resonance receiving module, and there is no charging cable connection, thereby realizing the free and unrestrained use of the mobile phone during wireless charging.

[0027] In this embodiment, the adapter and the magnetic resonance transmitting module are integrated in the wireless charging transmitting base. When in use, the wireless charging transmitting base is connected to the socket, the mains is turned on, and the magnetic charging plate is attached to the mobile terminal, so that the mobile phone can be charged and played freely within the magnetic field coupling range of the magnetic resonance transmitting module and the magnetic resonance receiving module.

[0028] See also Figure 2 The magnetic resonance transmitting module includes a main control chip, a DCDC voltage regulation module, a complementary signal generating chip, a communication module, a MOS driving chipset, a full-bridge inverter circuit and a high-frequency resonance component.

[0029] The main control chip U1, the DCDC voltage regulating module, and the full-bridge inverter circuit are all connected to the adapter; the communication module and the complementary signal generating chip U2 are respectively connected to the main control chip U1, the MOS driving chip group (U3, U4) are respectively connected to the complementary signal generating chip U2 and the full-bridge inverter circuit, and the high-frequency resonance component is connected to the output end of the full-bridge inverter circuit. In this embodiment, the complementary signal generating chip U2 can use 74LS86, the single chip of the MOS driving chip group can use a push-pull dual MOS driving chip, and the full-bridge inverter circuit uses a high-frequency inverter full-bridge circuit formed by four MOS tubes. The high-frequency resonance component includes a series-connected resonant capacitor C4 and a resonant transmitting coil L1. The power supply V input by the adapter is boosted by the DCDC voltage regulating circuit to power the high-frequency inverter full-bridge circuit. Under the drive of the high-frequency inverter full-bridge circuit, a sine wave is formed in the high-frequency resonant cavity formed by the resonant capacitor C4 and the resonant transmitting coil L1, and an alternating electromagnetic field is emitted to the outside. The operating frequency of the high-frequency inverter full-bridge circuit is controlled by the main control chip U1.

[0030] In one embodiment, the DCDC voltage regulation module, the communication module, and the MOS driver chipset may be integrated into a main control chip, and the adapter is provided for the main control chip.

[0031] See also Figure 3 In another embodiment, in order to increase the transmission power, the adapter uses an adapter with a fast charging protocol, such as a PD charger, which can output a voltage range of 5V / 9V / 12V / 15 / 20V, or use the PPS protocol to output a precise voltage adjustable from 3.3V to 21V in steps of 0.02V. Therefore, a DCDC voltage regulating circuit can be saved in the working circuit of the magnetic resonance transmitting module, which can avoid the efficiency loss of about 8% caused by the DCDC voltage regulating circuit, greatly improving the conversion efficiency of the magnetic resonance transmitting module, making it more efficient and less hot, and circuits of the same volume can transmit higher power energy.

[0032] Specifically, the magnetic resonance transmitting module includes a main control chip, a step-down module, a complementary signal generating chip, a communication module, a MOS driving chipset, a full-bridge inverter circuit and a high-frequency resonance component. The step-down module and the full-bridge inverter circuit are respectively connected to the adapter and are directly powered by the adapter. Since the adapter directly supplies power to the full-bridge inverter circuit, the output voltage of the adapter is relatively high. At this time, the step-down module supplies power to the main control chip, the communication module and the MOS driving chipset respectively after stepping down the voltage. In one embodiment, the communication module and the MOS driving chipset can be integrated into the main control chip, and the voltage of the adapter is provided to the main control chip after stepping down the voltage.

[0033] The resonant frequency of the high-frequency resonant component is greater than 2Mhz and less than 20Mhz. In this embodiment, the resonant frequency of the high-frequency resonant component is the magnetic resonant wireless charging frequency of 6.78Mhz or 13.56Mhz defined by the A4WP Association, which uses spatial resonant coupling instead of field magnetic coupling, thereby greatly improving the charging distance of the product.

[0034] See also Figure 4 The magnetic resonance receiving module includes an LC resonance circuit, a rectifier circuit and a voltage-stabilizing output circuit connected in sequence. The LC resonance circuit is used to couple the changing magnetic field of the magnetic resonance transmitting module and generate a high-frequency sine wave. The rectifier circuit rectifies the high-frequency sine wave into direct current. The voltage-stabilizing output circuit is used to receive direct current and output the stable electric energy. A storage capacitor C6 is connected in parallel between the positive and negative output ends of the rectifier circuit.

[0035] The utility model LC resonant circuit includes an inductor L2 and a capacitor C5 connected in parallel. The frequency of the LC resonant circuit is consistent with the resonant frequency of the changing magnetic field generated in the magnetic resonance transmitting module, that is, 6.78Mhz or 13.56Mhz, and the frequency F of the LC resonant circuit is 1 / (2*π*√LC). The resonant frequency of the inductor L2 and the capacitor C5 in the LC resonant circuit is matched with the operating frequency of the transmitting end of the magnetic resonance transmitting module, that is, the frequency of the high-frequency resonant component is matched, so that the LC resonant circuit can couple to the energy of the frequency in a space at a relatively long distance, thereby increasing the range of activities of the mobile terminal during wireless charging. The alternating current generated by the LC resonant circuit is rectified and output through a rectifier circuit (the operating frequency is the same as the receiving frequency of the inductor L2), and then the direct current is output after filtering by the capacitor C5. According to the energy of the magnetic resonance transmitting end, the receiving ability of the receiving end, the size of the energy storage capacitor, etc., the direct current ripple is large, so the direct current passes through the voltage stabilizing circuit and then supplies power to the lower circuit (magnetic coupling transmitting module).

[0036] The magnetic coupling transmitting module includes a second main control chip U5, a second DCDC voltage regulating circuit, a second complementary signal generating chip U6, a second communication module, a second MOS driving chipset, a second full-bridge inverter circuit and a second resonant component.

[0037] The second main control chip U5 and the second DCDC voltage regulating circuit are both connected to the output end of the voltage stabilizing circuit, the second communication module and the second complementary signal generating chip are respectively connected to the second main control chip U5, the second MOS driving chipset is respectively connected to the second complementary signal generating chip and the second full-bridge inverter circuit, and the second resonant component is connected to the output end of the second full-bridge inverter circuit. The second main control chip sends a control signal to the second MOS driving chipset, and the second MOS driving chipset drives the switch tube in the second full-bridge inverter circuit to open and close according to the control signal; the second resonant component generates an alternating electromagnetic field, and the output end of the magnetic resonance receiving module supplies power to the second full-bridge inverter circuit through the second DCDC voltage regulating circuit. The output end of the magnetic resonance receiving module outputs a DC voltage, which is generally required to be higher than 5V or 9V at best. At this time, the DCDC voltage regulating circuit of the magnetic coupling transmitting module can start the bypass direct mode or the low voltage difference conversion mode, which is the most efficient. When the voltage obtained by the magnetic coupling transmitting module from the magnetic resonance receiving module is low, the DCDC voltage regulating circuit will also enter the working mode of large voltage difference conversion, and boost the input energy to the voltage amplitude required by the magnetic coupling transmitting circuit. After the magnetic coupling transmitting module obtains the appropriate working voltage, the second main control chip U5 will output a control signal to control the inverter full-bridge circuit formed by the four switch tubes. Under the drive of the inverter full-bridge circuit, the second resonant component is formed at the LC connection. A sine wave is formed in the cavity, and an alternating electromagnetic field is emitted outward. The operating frequency of the inverter full-bridge circuit is controlled by the second main control chip U5 of the magnetic coupling circuit, which is usually 105-145K, with 120K being a typical value. The hardware resonant frequency of the LC resonant circuit itself is not strictly required to be the same as the operating frequency, and is often slightly smaller than the operating frequency, such as 90K, because magnetic coupling wireless charging does not use resonance to transmit energy, and its resonance parameters are used to adjust the input and output gain of the system.

[0038] The magnetic coupling receiving module includes a coupling receiving LC component, a rectifier circuit BD2 and a voltage stabilizing output circuit connected in sequence. The output end of the voltage stabilizing output circuit is connected to the battery of the mobile terminal. The coupling receiving LC component is used to couple with the second alternating electromagnetic field and generate alternating current. The coupling receiving LC component includes an inductor L4 and a capacitor C11 connected in series. The rectifier circuit rectifies the alternating current into direct current. The voltage stabilizing output circuit receives the direct current and outputs stable electric energy to charge the battery of the mobile terminal. A storage capacitor C12 is connected in parallel between the positive and negative output ends of the rectifier circuit. In one embodiment, the output end of the voltage stabilizing output circuit supplies power to the battery of the mobile terminal after passing through the step-down circuit.

[0039] The wireless charging system of the utility model uses a wireless charging transmitting base that integrates an adapter and a magnetic resonance transmitting module, a magnetic charging plate that integrates a magnetic resonance receiving module and a magnetic coupling transmitting module, and a mobile terminal that supports magnetic wireless charging, such as iPhone12 / 13 / 14 / 15, Huawei Mate60 mobile phone with a magnetic leather case, etc., to achieve a wireless charging distance of 5cm-20cm or even 50cm, thereby realizing a truly wireless charging experience.

[0040] The above description shows and describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept of this article through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A wireless charging system, comprising an adapter, the adapter being used to connect to a mains supply and output a power supply, characterized in that: include: A magnetic resonance transmitting module, the magnetic resonance transmitting module is connected to the adapter, the adapter supplies power to the magnetic resonance transmitting module, and the magnetic resonance transmitting module is used to emit an alternating electromagnetic field; A magnetic resonance receiving module, which matches the magnetic resonance transmitting module and is used to couple the alternating electromagnetic field emitted by the magnetic resonance transmitting module and output electrical energy; A magnetic coupling transmitting module, which is connected to the magnetic resonance receiving module and is used to convert the electric energy into a second alternating electromagnetic field; A magnetic coupling receiving module, which matches the magnetic coupling transmitting module and is used to couple the second alternating electromagnetic field emitted by the magnetic coupling transmitting module and output stable electric energy to charge the battery of the mobile terminal, and the magnetic coupling receiving module is arranged in the mobile terminal; Among them, the magnetic resonance receiving module and the magnetic coupling transmitting module are integrated in a magnetic charging disk; the magnetic charging disk is connected to the mobile terminal through magnetic attraction.

2. A wireless charging system according to claim 1, characterized in that: The magnetic resonance transmitting module includes a main control chip, a DCDC voltage regulating module, a complementary signal generating chip, a communication module, a MOS driving chipset, a full-bridge inverter circuit and a high-frequency resonance component; The main control chip, DCDC voltage regulation module, communication module and MOS drive chipset are all connected to the adapter; the full-bridge inverter circuit is connected to the output end of the DCDC voltage regulation module, the communication module and the complementary signal generating chip are respectively connected to the main control chip, the MOS drive chipset is respectively connected to the complementary signal generating chip and the full-bridge inverter circuit, and the high-frequency resonance component is connected to the output end of the full-bridge inverter circuit; The main control chip is used to send a control signal to the MOS drive chipset, and the MOS drive chipset is used to drive the switching tube in the full-bridge inverter circuit to open and close according to the control signal; the high-frequency resonance component is used to generate an alternating electromagnetic field, and the DCDC voltage regulation module supplies power to the full-bridge inverter circuit.

3. A wireless charging system according to claim 1, characterized in that: The magnetic resonance transmitting module includes a main control chip, a step-down module, a complementary signal generating chip, a communication module, a MOS driving chipset, a full-bridge inverter circuit and a high-frequency resonance component; The step-down module and the full-bridge inverter circuit are respectively connected to the adapter, the main control chip and the MOS drive chipset are respectively connected to the output end of the step-down module; the communication module and the complementary signal generating chip are respectively connected to the main control chip, the MOS drive chipset is respectively connected to the complementary signal generating chip and the full-bridge inverter circuit, and the high-frequency resonance component is connected to the output end of the full-bridge inverter circuit; The main control chip is used to send a control signal to the MOS drive chipset, and the MOS drive chipset is used to drive the switching tube in the full-bridge inverter circuit to open and close according to the control signal; the high-frequency resonance component is used to generate an alternating electromagnetic field, and the adapter supplies power to the full-bridge inverter circuit.

4. A wireless charging system according to claim 2 or 3, characterized in that: The resonant frequency of the high-frequency resonant component is greater than 2Mhz and less than 20Mhz.

5. A wireless charging system according to claim 4, characterized in that: The resonant frequency of the high-frequency resonant component is 6.78Mhz or 13.56Mhz.

6. A wireless charging system according to claim 1, characterized in that: The magnetic resonance receiving module includes an LC resonance circuit, a rectifier circuit and a voltage-stabilizing output circuit connected in sequence, wherein the LC resonance circuit is used to couple the changing magnetic field of the magnetic resonance transmitting module and generate a high-frequency sine wave, the rectifier circuit rectifies the high-frequency sine wave into direct current, and the voltage-stabilizing output circuit is used to receive the direct current and output the stable electric energy; wherein an energy storage capacitor is connected in parallel between the positive and negative output ends of the rectifier circuit.

7. A wireless charging system according to claim 6, characterized in that: The frequency of the LC resonant circuit is consistent with the resonant frequency of the changing magnetic field generated by the magnetic resonance transmitting module.

8. The wireless charging system according to claim 1, characterized in that: The magnetic coupling transmitting module includes a second main control chip, a second DCDC voltage regulating circuit, a second complementary signal generating chip, a second communication module, a second MOS driving chipset, a second full-bridge inverter circuit and a second resonant component; The second main control chip and the second DCDC voltage regulating circuit are both connected to the output end of the magnetic resonance receiving module, the second communication module and the second complementary signal generating chip are respectively connected to the second main control chip, the second MOS driving chipset is respectively connected to the second complementary signal generating chip and the second full-bridge inverter circuit, and the second resonant component is connected to the output end of the second full-bridge inverter circuit; The second main control chip is used to send a control signal to the second MOS driver chipset, and the second MOS driver chipset is used to drive the switching of the switch tube in the second full-bridge inverter circuit according to the control signal; the second resonant component is used to generate an alternating electromagnetic field, and the output end of the magnetic resonance receiving module supplies power to the second full-bridge inverter circuit.

9. The wireless charging system according to claim 1, characterized in that: The magnetic coupling receiving module includes a coupling receiving LC component, a rectifier circuit and a voltage-stabilizing output circuit connected in sequence, wherein the output end of the voltage-stabilizing output circuit is connected to the battery of the mobile terminal, or the output end of the voltage-stabilizing output circuit is connected to the battery of the mobile terminal through a step-down circuit; the coupling receiving LC component is used to couple with the second alternating electromagnetic field and generate alternating current, the rectifier circuit rectifies the alternating current into direct current, and the voltage-stabilizing output circuit is used to receive the direct current and output the stable electric energy to charge the battery of the mobile terminal; wherein an energy storage capacitor is connected in parallel between the positive and negative output ends of the rectifier circuit.

10. A wireless charging system according to claim 1, characterized in that: It also includes a charging and transmitting base, and the adapter and the magnetic resonance transmitting module are integrated in the wireless charging and transmitting base.

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