Wireless charging device based on magnetic resonance

Abstract

The utility model provides a wireless charging device based on magnetic resonance, and belongs to the technical field of wireless charging. In order to solve the problem of low reliability of magnetic resonance wireless charging, the utility model provides a wireless charging device based on magnetic resonance, which comprises power supply equipment, transmitting equipment and receiving equipment which are independently arranged, the power supply equipment comprises a power supply circuit board; the power supply circuit board comprises a power supply module and a control module; the transmitting equipment comprises a first shell, and a transmitting circuit board and a transmitting coil are arranged in the first shell; the receiving equipment comprises a second shell, and a cooling fan, a receiving circuit board and a receiving coil are arranged in the second shell; the power supply module is connected with the transmitting circuit board through a power output line, and the control module is connected with the transmitting circuit board through a control line and is in wireless communication connection with receiving equipment. The power supply equipment and the transmitting equipment are separately arranged, and the control signal of the transmitting equipment is transmitted in a wired manner, so that the overall reliability of the device is improved.

Description

Technical Field

[0001] The present application relates to the field of wireless charging technology, and in particular to a wireless charging device based on magnetic resonance. Background Art

[0002] Currently, there are two main types of wireless charging technologies: electromagnetic induction and electromagnetic radiation. Electromagnetic induction transfers energy through electromagnetic induction between two coils, a near-field method with a transmission distance generally within a few centimeters. Electromagnetic radiation, on the other hand, transmits energy through electromagnetic waves, a far-field method. However, this method is less efficient and poses potential radiation risks to the human body and the environment. Furthermore, both traditional wireless charging technologies have drawbacks: short transmission distances, low efficiency, and strict requirements on the position and orientation of the target object. To overcome these issues, magnetic resonance wireless charging technology has emerged.

[0003] Magnetic resonance wireless charging transfers electrical energy through the principle of electromagnetic resonance. Specifically, a transmitting coil (also called a "transmitter") and a receiving coil (also called a "receiver") are placed in pairs. The transmitting coil emits a high-frequency electromagnetic field, and the receiving coil receives the electromagnetic field synchronously. Through the induction of the electromagnetic field, the electromagnetic energy is converted into electrical power, achieving wireless charging.

[0004] Magnetic resonance wireless charging is becoming increasingly widely used due to its advantages such as higher conversion efficiency and greater transmission power. However, magnetic resonance wireless charging also has the disadvantages of more severe heat generation and stronger signal interference, resulting in lower reliability. Utility Model Content

[0005] The purpose of this application is to solve the problem of low reliability of magnetic resonance wireless charging in the prior art. Therefore, this application provides a wireless charging device based on magnetic resonance. By separating the power supply device and the transmitter device, it is possible to respectively construct a power conversion operating environment and a magnetic resonance wireless charging transmitter operating environment, thereby improving the reliability of both operations. The control signal of the transmitter device is transmitted through a control line to ensure control reliability. In addition, the transmitter device is immersed in cooling through an insulating coolant to improve heat dissipation efficiency, further ensure operational reliability, and thus improve the overall reliability of the device.

[0006] The embodiment of the present application provides a wireless charging device based on magnetic resonance, including a power supply device, a transmitting device, and a receiving device that are independently arranged;

[0007] The power supply device includes a power supply circuit board, which includes a power supply module and a control module. The power supply module is used for AC / DC conversion and external power supply. The control module is communicatively connected with both the transmitting device and the receiving device.

[0008] The transmitting device includes a first shell, the first shell is filled with an insulating coolant, and the first shell is also provided with a transmitting circuit board and a transmitting coil connected to the transmitting circuit board;

[0009] The receiving device includes a second shell, a cooling fan is provided in the second shell, and a receiving circuit board and a receiving coil connected to the receiving circuit board are also provided in the second shell; and

[0010] The power supply module is connected to the transmitting circuit board via a power output line, the control module is connected to the transmitting circuit board via a control line, and is wirelessly connected to the receiving device.

[0011] By adopting the above technical solution, the power supply device and the transmitting device are set up independently of each other, so as to respectively construct the power conversion operating environment and the magnetic resonance wireless charging transmitter operating environment, thereby improving the adaptability of the operating environment of both the power supply circuit board and the transmitting circuit board, thereby improving the reliability of their operation, and improving the overall reliability of the magnetic resonance wireless charging device, and the structure is simple and the cost is low; at the same time, the control module is integrated on the power supply circuit board, and the control module and the transmitting circuit board are connected by a control line, which can reduce the impact of the high magnetic field of the transmitting device on the communication, thereby improving the reliability of the control of the transmitting device, and thereby improving the overall reliability of the magnetic resonance wireless charging device; and, for the transmitting device with higher transmission power, insulating coolant is used to achieve immersion cooling inside, which improves the heat dissipation efficiency, ensures the operating reliability of the transmitting device, and thus ensures the reliability of the entire device; a cooling fan is used for the receiving device with lower transmission power to achieve air cooling, which effectively controls the cost while meeting the heat dissipation requirements.

[0012] In some embodiments, the first shell includes a first shell body with a top opening and a first top cover covering the top opening of the first shell body;

[0013] A flange edge extends outward from the top opening of the first shell body, a sealing ring is provided on the flange edge, and the edge of the first top cover covers the sealing ring and is fixed to the flange edge by rivets;

[0014] A first waterproof binding post and a second waterproof binding post are provided on the side of the first shell body, the power output line is connected to the transmitting circuit board through the first waterproof binding post, and the control line is connected to the transmitting circuit board through the second waterproof binding post;

[0015] The side of the first shell body is also provided with a liquid inlet and outlet through hole, and the liquid inlet and outlet through hole is connected to a waterproof plug.

[0016] By adopting the above technical solution, the overall sealing of the first shell is ensured by the flange edge, sealing ring and rivets, which is convenient for filling the insulating coolant, and has a simple structure and controllable cost; at the same time, the power output line and the control line are respectively connected through the first waterproof terminal and the second waterproof terminal, which ensures the safety of the line and facilitates the maintenance of the line between the power supply equipment and the transmitting equipment.

[0017] In some embodiments, heat dissipation holes are provided on the bottom and side surfaces of the second housing, and the heat dissipation fan is provided on the other side surface of the second housing opposite to the heat dissipation holes on the side surface thereof.

[0018] By adopting the above technical solution, the forced convection effect of the cooling fan is improved through the layout of the cooling fan and the cooling holes on the bottom and side surfaces of the second shell, thereby improving the cooling efficiency of the receiving device.

[0019] In some embodiments, a power output port and a control feedback port are provided on one side of the receiving device, and both the power output port and the control feedback port are connected to the receiving circuit board. The power output port is used to supply power to the electrical device, and the control feedback port is used to receive the power management signal of the electrical device.

[0020] In some embodiments, the second shell includes a second shell body with a top opening and a second top cover covering the top opening of the second shell body;

[0021] The second shell body is provided with a screw hole seat near the top opening thereof, and the second top cover is connected to the second shell body by engaging with the screw hole seat through screws.

[0022] In some embodiments, the transmitting coil and the receiving coil are both hollow copper tubes, and the surface of the transmitting coil is covered with an insulating anti-rust layer.

[0023] By adopting the above technical solution, the transmitting coil and the receiving coil are formed by a hollow copper tube, so that the coil has a high Q value to achieve efficient magnetic field resonance coupling, thereby improving the charging efficiency of the device.

[0024] In some embodiments, the first shell and the second shell are both made of engineering plastics.

[0025] The above technical solution can avoid the influence of the metal shell on the magnetic field of the transmitting device and the receiving device, and ensure that the shell has good mechanical strength, heat resistance, electrical insulation, etc., and has a long service life.

[0026] In some embodiments, a first coil seat and a first slot are provided in the first housing, the transmitting coil is snapped into the first coil seat, and the transmitting circuit board is snapped into the first slot;

[0027] A second coil seat and a second slot are provided in the second shell. The receiving coil is clamped in the second coil seat, and the receiving circuit board is clamped in the second slot.

[0028] By adopting the above technical solution, the coil seat ensures the position stability of the coil in the housing, and the slot ensures the position stability of the circuit board in the housing, thereby ensuring the reliability of the transmitting device and the receiving device and the overall reliability of the device.

[0029] In some embodiments, a power input line and a power output line are connected to opposite sides of the power supply device, respectively. The power input port of the power supply circuit board is connected to the power input line, the power output port is connected to a hub, and the power supply port of the hub is connected to the power output line.

[0030] The power supply device further comprises an indicator light and a switch button connected to the power supply circuit board.

[0031] In some embodiments, the power supply device further comprises a power box, wherein the power circuit board and the hub are both disposed in the power box and are disposed at both ends of the power box;

[0032] The two end surfaces of the power box are respectively connected to the power input line and the power output line, and ventilation holes are opened on both end surfaces of the power box;

[0033] The bottom surface of the power box is arranged with a plurality of strip-shaped slots in an array.

[0034] By adopting the above technical solution, convection ventilation is achieved through the ventilation holes on the two end surfaces of the power box, and the heat dissipation area is increased through the strip grooves on the bottom surface, thereby improving the heat dissipation efficiency of the power supply equipment; and, by arranging the power input line, power circuit board, hub and power output line that generate more heat in the power supply equipment in sequence on the convection ventilation route, it is further ensured that each component achieves good heat dissipation and ensures reliable operation of the power supply equipment.

[0035] Other features and corresponding beneficial effects of the present application are described in the latter part of the specification, and it should be understood that at least some of the beneficial effects become obvious from the description in the specification of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] FIG1( a ) is a schematic structural diagram of an embodiment of the present application;

[0037] Figure 1(b) is a schematic diagram of the use state of an embodiment of the present application;

[0038] FIG2( a ) is a schematic structural diagram of the power supply device in an embodiment of the present application after removing the cover plate;

[0039] FIG2( b ) is a schematic structural diagram of a cover plate of a power supply device in an embodiment of the present application;

[0040] FIG3( a ) is a schematic structural diagram of the transmitting device in an embodiment of the present application after removing the first top cover;

[0041] FIG3( b ) is a schematic structural diagram of a first top cover of a transmitting device in an embodiment of the present application;

[0042] FIG3( c ) is a schematic structural diagram of a transmitting coil of a transmitting device in an embodiment of the present application;

[0043] FIG4( a ) is a schematic structural diagram of the receiving device in an embodiment of the present application after removing the second top cover;

[0044] FIG4( b ) is a schematic structural diagram of a second top cover of a receiving device in an embodiment of the present application;

[0045] FIG4( c ) is a schematic structural diagram of a receiving coil of a receiving device in an embodiment of the present application.

[0046] Description of reference numerals:

[0047] 100, power supply; 110, power box; 111, cover; 112, ventilation holes; 113, strip slots; 120, power circuit board; 130, cable hub; 140, power input cable; 150, power output cable; 160, control cable; 170, indicator light; 180, switch button;

[0048] 200, transmitter; 210, first housing; 211, first top cover; 212, sealing ring; 220, transmitter circuit board; 221, first slot; 230, transmitter coil; 231, first coil holder; 240, first waterproof terminal; 250, second waterproof terminal; 260, waterproof plug;

[0049] 300, receiving device; 310, second shell body; 311, second top cover; 312, screw hole seat; 313, heat dissipation hole; 320, receiving circuit board; 330, receiving coil; 331, second coil seat; 340, cooling fan; 350, power output port; 360, control feedback port. DETAILED DESCRIPTION

[0050] The following specific embodiments illustrate the implementation of the present application. Those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Although the description of the present application will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this application are limited to this implementation. On the contrary, the purpose of introducing the application in conjunction with the implementation is to cover other options or modifications that may be extended based on the claims of the present application. In order to provide an in-depth understanding of the present application, the following description will contain many specific details. The present application can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other unless there is a conflict.

[0051] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0052] In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting this application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention of this application, unless otherwise specified, "multiple" means two or more. Unless otherwise specified and limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0053] It should be noted that the basic structure and operating principle of wireless charging devices based on magnetic resonance are currently well-researched. A wireless charging device includes a power supply, a transmitter, and a receiver. The power supply converts AC power into DC power to power the transmitter. The transmitter includes a circuit board and a transmitting coil, and receives control signals from the power device or the cloud to generate a corresponding high-frequency, high-current, phase-controllable drive signal. The receiver also includes a circuit board and a receiving coil, and receives the electromagnetic field from the transmitter, converting the electromagnetic energy into electrical energy to power the power device. Furthermore, to simplify the overall structure of the device, the power supply and transmitter are usually integrated into the same device. However, this integrated setup increases design complexity and reduces the reliability of the various functions.

[0054] Please refer to Figures 1(a)-(b), Figure 1(a) is a structural schematic diagram of an embodiment of the present application; Figure 1(b) is a usage status schematic diagram of an embodiment of the present application.

[0055] The embodiment of the present application provides a magnetic resonance-based wireless charging device, comprising a power supply device 100, a transmitter device 200, and a receiver device 300, which are independently arranged. That is, compared to existing devices, the present application separates the power supply device 100 from the transmitter device 200, thereby separately constructing a power conversion operating environment and a magnetic resonance wireless charging transmitter operating environment, thereby improving the adaptability of the operating environments of the power supply circuit board 120 and the transmitter circuit board 220, thereby improving the reliability of both operations and the overall reliability of the device. Moreover, although the number of devices in the present device increases, compared to an integrated device, the structure of each device in the present device is relatively simple and the cost is low.

[0056] The power supply device 100 includes a power circuit board 120, which includes a power supply module and a control module. The power supply module is used for AC / DC conversion and external power supply. Typically, 220V AC mains power is connected to the power circuit board 120 via a power input line 140. The power supply module performs AC / DC conversion and preferably performs voltage modulation before supplying power to the external device via a power output line 150. The control module is in communication with both the transmitter 200 and the receiver 300. The control module utilizes conventional technology and generally controls wireless charging, including startup, operation, and status monitoring.

[0057] The transmitting device 200 includes a first housing, in which a transmitting circuit board 220 and a transmitting coil 230 connected to the transmitting circuit board 220 are disposed. A power supply module is connected to the transmitting circuit board 220 via a power output line 150 .

[0058] The receiving device 300 includes a second shell, in which a receiving circuit board 320 and a receiving coil 330 connected to the receiving circuit board 320 are further provided, which cooperate with the transmitting coil 230 to realize wireless charging.

[0059] In particular, the present application integrates the control module into the power circuit board 120 of the power supply device 100. Compared with the prior art in which the control module is arranged at the transmitting end, the transmitting end is further made simple and efficient, and the reliability of the device as a whole is also improved.

[0060] Furthermore, unlike existing devices that all rely on wireless communication, the control module in this device is connected to the transmitting circuit board 220 via a control line 160. This reduces the impact of the high magnetic field at the transmitting end on communication, ensures control reliability, and thus improves the overall reliability of the magnetic resonance wireless charging device. Since the magnetic field strength at the receiving end is lower, the control module and receiving device 300 can use conventional wireless communication.

[0061] In one specific embodiment, the power circuit board 120 of the power supply device 100 communicates with the cloud via WiFi, communicates with the transmitting device 200 via a serial port, and communicates with the receiving device 300 via BLE (Bluetooth Low Energy), and the cloud then communicates with the APP on the mobile device.

[0062] This device achieves both reliable and flexible control systems through a combination of wired and wireless communications, as well as cloud-based IoT communication. Furthermore, it leverages the principle of magnetic resonance to establish magnetic resonance coupling between the transmitter and receiver, enabling highly efficient wireless energy transmission. Compared to traditional wireless charging technologies, this technology offers advantages such as higher transmission efficiency, greater power transmission within the same specifications, and greater adaptability. It is suitable for wireless charging of various electronic devices, particularly in medium- and high-power applications such as smart homes, autonomous vehicles, and robotics.

[0063] Please refer to Figures 2(a)-(b), Figure 2(a) is a structural schematic diagram of the power supply device 100 in the embodiment of the present application after removing the cover 111; Figure 2(b) is a structural schematic diagram of the cover 111 of the power supply device 100 in the embodiment of the present application.

[0064] In one embodiment, power supply device 100 is connected to power input cable 140 and power output cable 150 on opposite sides. The power input port of power supply circuit board 120 is connected to power input cable 140, the power output port is connected to hub 130, and the power supply port of hub 130 is connected to power output cable 150.

[0065] In one embodiment, the power supply device 100 further includes a power box 110 , and the power circuit board 120 and the hub 130 are both disposed in the power box 110 and are disposed at two ends of the power box 110 .

[0066] The two end surfaces of the power box 110 are respectively connected to the power input line 140 and the power output line 150, and ventilation holes 112 are provided on both end surfaces of the power box 110. Convection ventilation and heat dissipation are achieved through the ventilation holes 112 on the two end surfaces of the power box 110. In addition, by arranging the power input line 140, power circuit board 120, hub 130 and power output line 150 that generate more heat in the power supply device 100 in sequence on the convection ventilation path, it is further ensured that each component achieves good heat dissipation and ensures reliable operation of the power supply device 100.

[0067] In one embodiment, a plurality of strip-shaped slots 113 are arranged in an array on the bottom surface of the power box 110 . The strip-shaped slots 113 on the bottom surface increase the heat dissipation area, thereby further improving the heat dissipation efficiency of the power supply device 100 .

[0068] In one embodiment, the power supply device 100 further includes an indicator light 170 and a switch button 180 connected to the power circuit board 120 .

[0069] In a specific embodiment, the power box 110 of the power supply device 100 is covered with a cover 111 , and the indicator light 170 and the switch button 180 are both arranged on the cover 111 for user convenience.

[0070] The indicator lights 170 may be provided with multiple, for example, triple indicator lights 170, which respectively indicate the power status, the transmitter status, and the receiver status. All three are green when working properly, and red when there is a fault. Below the indicator lights 170 is a switch button 180 for starting and stopping charging.

[0071] Please refer to Figures 3(a)-(c), Figure 3(a) is a schematic structural diagram of the transmitting device 200 in an embodiment of the present application after removing the first top cover 211; Figure 3(b) is a schematic structural diagram of the first top cover 211 of the transmitting device 200 in an embodiment of the present application; Figure 3(c) is a schematic structural diagram of the transmitting coil 230 of the transmitting device 200 in an embodiment of the present application.

[0072] It should be noted that the transmission power of the transmitter of magnetic resonance wireless charging is usually 1000W or above. Traditional air cooling is difficult to meet the cooling requirements. The water cooling design increases the complexity of pipelines and maintenance, and there is also the risk of leakage and short circuit.

[0073] Therefore, in one embodiment, the first shell of the power supply device 100 is filled with an insulating coolant, such as a fluorocarbon coolant. The coolant is heat-conducting but not electrically conductive, which can ensure the normal operation of the high-power circuit. At the same time, the heat point is directly immersed in the liquid, and the heat dissipation efficiency is high, ensuring the operational reliability of the transmitting device 200, thereby ensuring the reliability of the entire device.

[0074] In one embodiment, the first housing includes a first housing body 210 with an opening at the top and a first top cover 211 covering the top opening of the first housing body 210 .

[0075] The top opening of the first shell body 210 extends outward with a flange edge, and a sealing ring 212, such as a silicone gasket, is provided on the flange edge. The edge of the first top cover 211 covers the sealing ring 212 and is fixed to the flange edge by rivets, thereby ensuring the sealing of the first shell, facilitating the filling of insulating coolant, and having a simple structure and controllable costs.

[0076] In one embodiment, a first waterproof terminal 240 and a second waterproof terminal 250 are provided on the side of the first shell body 210. The power output line 150 is connected to the transmitting circuit board 220 through the first waterproof terminal 240, and the control line 160 is connected to the transmitting circuit board 220 through the second waterproof terminal 250, ensuring the safety of the line and facilitating the maintenance of the line between the power supply device 100 and the transmitting device 200.

[0077] In one embodiment, the side of the first shell body 210 is further provided with a liquid inlet and outlet through hole, and the liquid inlet and outlet through hole is connected to a waterproof plug 260 to facilitate filling of insulating coolant and ensure the sealing of the shell.

[0078] In one embodiment, the transmitting coil 230 is a hollow copper tube, which provides a high Q value for efficient magnetic field resonant coupling. At a frequency of 6.78 MHz, the transmission efficiency is measured to be higher than that of a coil constructed from Litz wire, thereby improving the charging efficiency of the device. It is understood that the transmitting coil 230 is a multi-layer, rotated, and stacked structure. Preferably, the surface of the transmitting coil 230 is covered with an insulating and rust-proof layer to accommodate immersion in coolant and further ensure device safety and reliability.

[0079] Please refer to Figures 4(a)-(c), Figure 4(a) is a schematic structural diagram of the receiving device 300 in an embodiment of the present application after removing the second top cover 311; Figure 4(b) is a schematic structural diagram of the second top cover 311 of the receiving device 300 in an embodiment of the present application; Figure 4(c) is a schematic structural diagram of the receiving coil 330 of the receiving device 300 in an embodiment of the present application.

[0080] In one embodiment, a cooling fan 340 is further provided in the second housing, that is, the cooling fan 340 is used to cool the receiving device 300 with low transmission power, thereby effectively controlling the cost while meeting the heat dissipation requirements.

[0081] In one embodiment, the bottom and side surfaces of the second shell are both provided with heat dissipation holes 313, and the heat dissipation fan 340 is provided on the other side of the second shell opposite to the heat dissipation holes 313 on its side. Through the layout of the heat dissipation fan 340 and the heat dissipation holes 313 on the bottom and side surfaces of the second shell, the forced convection effect of the heat dissipation fan 340 is improved, thereby improving the heat dissipation efficiency of the receiving device 300.

[0082] In one embodiment, the second housing includes a second housing body 310 with an opening at the top and a second top cover 311 covering the top opening of the second housing body 310 .

[0083] The second housing body 310 is provided with a screw seat 312 near its top opening. The second top cover 311 is screwed to the screw seat 312 and connected to the second housing body 310. Since the receiving device 300 is air-cooled compared to the transmitting device 200, its sealing requirements are lower. Therefore, the second housing body 310 and the second top cover 311 of the receiving device 300 can be connected with screws, which is convenient and cost-effective.

[0084] In one embodiment, a power output port 350 and a control feedback port 360 are provided on one side of the receiving device 300. Both the power output port 350 and the control feedback port 360 are connected to the receiving circuit board 320. The power output port 350 is used to supply power to the power-consuming device, and the control feedback port 360 is used to receive power management signals from the power-consuming device, thereby communicating with the control module of the power supply device 100 to determine whether to continue charging the power-consuming device.

[0085] In one embodiment, the receiving coil 330 is a hollow copper tube, which provides a high Q value for efficient magnetic field resonant coupling. At a frequency of 6.78 MHz, the transmission efficiency is measured to be higher than that of a coil constructed of Litz wire, thereby improving the charging efficiency of the device. It is understood that the receiving coil 330 is a multi-layer, rotated, and stacked structure.

[0086] In one embodiment, both the first and second housings are made of engineering plastics. This prevents the metal housings from affecting the magnetic fields of the transmitter 200 and receiver 300, while ensuring the housings have excellent mechanical strength, heat resistance, electrical insulation, and other properties, resulting in a long service life. Furthermore, the first housing is extruded using an engineering plastics extrusion process to further ensure sealing.

[0087] In one embodiment, a first coil seat 231 and a first slot 221 are provided in the first shell, the transmitting coil 230 is snapped into the first coil seat 231 , and the transmitting circuit board 220 is snapped into the first slot 221 .

[0088] A second coil seat 331 and a second slot are provided in the second shell. The receiving coil 330 is snapped into the second coil seat 331 , and the receiving circuit board 320 is snapped into the second slot.

[0089] This method ensures the position stability of the coil in the housing through the coil seat and the position stability of the circuit board in the housing through the slot, thereby ensuring the reliability of the transmitting device 200 and the receiving device 300 and the overall reliability of the device.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A wireless charging device based on magnetic resonance, characterized in that: Including power supply equipment, transmitting equipment and receiving equipment that are independently set up; The power supply device includes a power supply circuit board, which includes a power supply module and a control module. The power supply module is used for AC / DC conversion and external power supply. The control module is communicatively connected with both the transmitting device and the receiving device. The transmitting device includes a first shell, the first shell is filled with an insulating coolant, and the first shell is also provided with a transmitting circuit board and a transmitting coil connected to the transmitting circuit board; The receiving device includes a second shell, a cooling fan is provided in the second shell, and a receiving circuit board and a receiving coil connected to the receiving circuit board are also provided in the second shell; and The power supply module is connected to the transmitting circuit board via a power output line, the control module is connected to the transmitting circuit board via a control line, and is wirelessly connected to the receiving device.

2. The wireless charging device based on magnetic resonance according to claim 1, characterized in that: The first shell includes a first shell body with a top opening and a first top cover covering the top opening of the first shell body; A flange edge extends outward from the top opening of the first shell body, a sealing ring is provided on the flange edge, and the edge of the first top cover covers the sealing ring and is fixed to the flange edge by rivets; A first waterproof binding post and a second waterproof binding post are provided on the side of the first shell body, the power output line is connected to the transmitting circuit board through the first waterproof binding post, and the control line is connected to the transmitting circuit board through the second waterproof binding post; The side of the first shell body is also provided with a liquid inlet and outlet through hole, and the liquid inlet and outlet through hole is connected to a waterproof plug.

3. The wireless charging device based on magnetic resonance according to claim 1, characterized in that: The bottom surface and the side surface of the second shell are both provided with heat dissipation holes, and the heat dissipation fan is arranged on the other side surface of the second shell opposite to the heat dissipation holes on the side surface thereof.

4. The wireless charging device based on magnetic resonance according to claim 1, characterized in that A power output port and a control feedback port are provided on one side of the receiving device. Both the power output port and the control feedback port are connected to the receiving circuit board. The power output port is used to supply power to the electrical device, and the control feedback port is used to receive the power management signal of the electrical device.

5. The wireless charging device based on magnetic resonance according to claim 1, characterized in that: The second shell includes a second shell body with a top opening and a second top cover covering the top opening of the second shell body; The second shell body is provided with a screw hole seat near the top opening thereof, and the second top cover is connected to the second shell body by engaging with the screw hole seat through screws.

6. The wireless charging device based on magnetic resonance according to any one of claims 1 to 5, characterized in that: The transmitting coil and the receiving coil are both hollow copper tubes, and the surface of the transmitting coil is covered with an insulating anti-rust layer.

7. The wireless charging device based on magnetic resonance according to any one of claims 1 to 5, characterized in that: The first shell and the second shell are both made of engineering plastics.

8. The wireless charging device based on magnetic resonance according to any one of claims 1 to 5, characterized in that: A first coil seat and a first slot are provided in the first housing, the transmitting coil is snapped into the first coil seat, and the transmitting circuit board is snapped into the first slot; A second coil seat and a second slot are provided in the second shell. The receiving coil is clamped in the second coil seat, and the receiving circuit board is clamped in the second slot.

9. The wireless charging device based on magnetic resonance according to claim 1, characterized in that: The power supply device is connected to a power input line and a power output line on opposite sides thereof, the power input port of the power supply circuit board is connected to the power input line, the power output port is connected to the hub, and the power supply port of the hub is connected to the power output line; The power supply device further comprises an indicator light and a switch button connected to the power supply circuit board.

10. The wireless charging device based on magnetic resonance according to claim 9, characterized in that: The power supply device further comprises a power box, wherein the power circuit board and the wiring hub are both arranged in the power box and are respectively arranged at two ends of the power box; The two end surfaces of the power box are respectively connected to the power input line and the power output line, and ventilation holes are opened on both end surfaces of the power box; The bottom surface of the power box is arranged with a plurality of strip-shaped slots in an array.

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