A magnetic coupling wireless power transmission system in vacuum

Abstract

The application discloses a kind of magnetic coupling wireless energy transmission systems in vacuum, including vacuum tube, vacuum tube outside is equipped with insulation shell, vacuum tube inside is equipped with transmitting end insulation board and receiving end insulation board, transmitting end insulation board and receiving end insulation board are provided with through hole to ensure the up and down communication of vacuum tube;Transmitting end coil and receiving end coil are respectively wound on transmitting end insulation board and receiving end insulation board, and transmitting end coil and receiving end coil are connected to transmitting circuit and receiving circuit by transmitting end wire and receiving end wire respectively, and the receiving circuit is connected to electrical equipment;The transmitting circuit transmits the alternating voltage of preset amplitude and frequency to transmitting end coil through transmitting end wire, and transmitting end coil generates electromagnetic field in vacuum tube and transmits energy to receiving end coil, and the alternating voltage induced on receiving end coil is transmitted to receiving circuit through receiving end wire to meet the required waveform, and then acts on electrical equipment.The application is used to solve the insulation problem of ultrasonic energy transmission device between high voltage grade gap, so as to realize the efficient transmission of high power electric energy from power supply side to electrical equipment under the condition of crossing high voltage grade.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of insulation isolation power supply technology, and in particular to a magnetic coupling wireless energy transmission system in vacuum. BACKGROUND

[0002] With the continuous development of power systems, insulation isolation power supply technology has higher application potential and value, such as isolated power supply from high potential side power supply to power equipment, monitoring operation of power equipment, etc. These scenarios often need to realize high insulation performance and high power supply under the condition of disconnecting direct electrical connection. Using a transformer for isolation power supply has the disadvantages of being heavy and expensive. Moreover, in the application scenario of cross high voltage level power transmission on a power tower, such as charging a monitoring device on a power tower through a high voltage bus, an isolation transformer is difficult to be carried on the power tower. Therefore, how to realize high power and high efficiency, lightweight, safe and stable energy transmission under the condition of cross high voltage level has become a major problem restricting the development of power systems.

[0003] There are five main wireless energy transmission methods at present, ultrasonic wireless energy transmission, magnetic coupling wireless energy transmission, electric field coupling wireless energy transmission, microwave wireless energy transmission and laser wireless energy transmission. Compared with traditional power supply technology, these wireless energy transmission power supply methods can realize energy transmission under the condition of disconnecting electrical connection. However, the distance of energy transmission by the electric field coupling wireless energy transmission is very limited, and the size of the high-capacitance copper plate limits its application scenario. The power transmission by microwave wireless energy transmission and laser wireless energy transmission is low, which is difficult to meet the power supply demand of most power equipment. The ultrasonic energy transmission method also has the same problem, and there are few reports on ultrasonic energy transmission technology devices exceeding hundreds of watts, and nonlinear problems are easy to occur in high power transmission. SUMMARY

[0004] In order to solve the problems existing in the prior art, the purpose of the present application is to provide a magnetic coupling wireless energy transmission system in vacuum, which is used to solve the insulation problem of ultrasonic energy transmission devices between high voltage level gaps, so as to realize efficient transmission of high power electric energy from the power supply side to the power equipment under the condition of cross high voltage level.

[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0006] A magnetic coupling wireless energy transmission system in vacuum, comprising a vacuum tube 1-8, an insulating shell 1-5 arranged outside the vacuum tube 1-8, a transmitting end insulating plate 1-7 and a receiving end insulating plate 1-9 arranged inside the vacuum tube 1-8, the transmitting end insulating plate 1-7 and the receiving end insulating plate 1-9 being provided with through holes to ensure the up-down communication of the vacuum tube 1-8, the transmitting end insulating plate 1-7 and the receiving end insulating plate 1-9 being respectively wound with a transmitting end coil 1-6 and a receiving end coil 1-10, the transmitting end coil 1-6 and the receiving end coil 1-10 being connected with a transmitting circuit 1-1 and a receiving circuit 1-14 through a transmitting end wire 1-2 and a receiving end wire 1-11, the receiving circuit 1-14 being connected with an electrical equipment 1-15; the transmitting circuit 1-1 transmits an alternating voltage with preset amplitude and frequency to the transmitting end coil 1-6 through the transmitting end wire 1-2, the transmitting end coil 1-6 generates an electromagnetic field in the vacuum tube 1-8 and transmits energy to the receiving end coil 1-10, and the alternating voltage induced on the receiving end coil 1-10 is transmitted to the receiving circuit 1-14 through the receiving end wire 1-11 and is used on the electrical equipment 1-15 after being adjusted to a required waveform.

[0007] The transmitting circuit 1-1 comprises a power supply module 2-1, an inverter module 2-2, a communication module 2-3, a control module 2-4 and a compensation resonance module 2-5; the inverter module 2-2 of the transmitting circuit 1-1 adjusts a direct current voltage generated by the power supply module 2-1 to an alternating voltage with preset frequency and amplitude, and performs compensation through the compensation resonance module 2-5; the communication module 2-3 in the transmitting circuit 1-1 is used for signal transmission with the communication module in the receiving circuit 1-14, and the control module 2-4 is used for adjusting circuit parameters to ensure stable operation of the transmitting circuit.

[0008] The receiving circuit 1-14 comprises a compensation resonance module 3-1, a rectifier module 3-2, a communication module 3-3, a control module 3-4 and a DC / DC conversion module 3-5; the alternating voltage acting on the receiving circuit 1-14 is compensated through the compensation resonance module 3-1, is adjusted to a direct current voltage through the rectifier module 3-2, and is then adjusted to a required amplitude through the DC / DC conversion module 3-5 to act on the electrical equipment 1-15; the communication module 3-3 in the receiving circuit 1-14 is used for signal transmission with the communication module of the transmitting circuit 1-1, and the control module 3-4 is used for adjusting circuit parameters to ensure stable operation of the receiving circuit.

[0009] The combination of the external insulating shell 1-5 and the internal vacuum tube 1-8, the transmitting end insulating plate 1-7 and the receiving end insulating plate 1-9 can greatly improve the insulation performance and voltage resistance level of the whole magnetic coupling wireless energy transmission system.

[0010] The winding mode of the transmitting coil 1-6 and the receiving coil 1-10 adopts a planar circular winding mode 4-1, a rectangular winding mode 4-2 or a three-dimensional spiral winding mode 4-3; and a magnetic core is mounted on the transmitting coil 1-6 and the receiving coil 1-10 according to the situation.

[0011] The transmitting wire 1-2 and the receiving wire 1-11, the transmitting coil 1-6 and the receiving coil 1-10 all use copper foil wires, so as to avoid the gas production problem of the organic skin of the ordinary wire or the Litz wire.

[0012] The relative distance between the transmitting coil 1-6 and the receiving coil 1-10 is adjusted by adjusting the relative position between the transmitting insulating plate 1-7 and the receiving insulating plate 1-9, so as to achieve better energy transmission effect and improve the energy transmission efficiency.

[0013] The insulating shell 1-5 is made of ceramic or insulating glass, and has good insulation function.

[0014] The transmitting insulating plate 1-7 and the receiving insulating plate 1-9 are made of ceramic insulating material.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] The magnetic coupling wireless energy transmission technology has high energy transmission power and efficiency, can meet the demand of transmission distance, and has the advantage of light weight. The magnetic coupling wireless energy transmission system in vacuum can realize high insulation performance and high-power power supply under the condition of disconnected electrical connection. Compared with the prior art, the present application has the following advantages:

[0017] 1) The magnetic coupling wireless energy transmission system adopts the structure design of internal insulation and external insulation combination, which greatly improves the insulation performance and voltage resistance level of the whole system;

[0018] 2) The wire of the energy transmission system uses copper foil wire, which solves the gas production problem of the organic skin of the Litz wire and the ordinary wire in the vacuum tube;

[0019] 3) The coil type energy transmission structure is used, which greatly improves the power and efficiency of energy transmission;

[0020] 4) Compared with the traditional isolation power supply equipment, the present application has the advantage of light weight. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is the system structure block diagram of the present application.

[0022] Figure 2 is the principle block diagram of the transmitting circuit 1-1 of the present application.

[0023] Figure 3 This is a block diagram of the receiving circuit 1-14 of the present invention.

[0024] Figure 4 This is a schematic diagram of the winding method of the transmitting coil 1-6 and the receiving coil 1-10 of the present invention. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0026] like Figure 1 As shown, the present invention discloses a magnetically coupled wireless power transmission system in a vacuum, comprising a transmitting circuit 1-1, a transmitting end wire 1-2, a transmitting end first wire interface 1-3, a transmitting end second wire interface 1-4, an insulating shell 1-5, a transmitting end coil 1-6, a transmitting end insulating plate 1-7, a vacuum tube 1-8, a receiving end insulating plate 1-9, a receiving end coil 1-10, a receiving end wire 1-11, a receiving end first wire interface 1-12, a receiving end second wire interface 1-13, a receiving circuit 1-14, and an electrical device 1-15. The transmitting end insulating plate 1-7 and the receiving end insulating plate 1-9 are provided with through holes to ensure the vertical connection of the vacuum tube 1-8; the transmitting circuit 1-1 transmits an AC voltage with a preset amplitude and frequency to the transmitting end coil 1-6 fixed on the transmitting end insulating plate 1-7 through the transmitting end wire 1-2. The transmitting end coil 1-6 generates an electromagnetic field in the vacuum tube 1-8 and transmits energy to the receiving end coil 1-10 wound on the receiving end insulating plate 1-9. The AC voltage induced on the receiving end coil 1-10 is transmitted to the receiving circuit 1-14 through the receiving end wire 1-11 and adjusted to a suitable waveform before being applied to the electrical equipment 1-15. The transmission system is externally encased in an insulating shell 1-5. Between the transmitting coil 1-6 and the receiving coil 1-10, there are transmitting insulating plates 1-7 and 1-9, with interfaces 1-3 (transmitter's first wire interface), 1-4 (transmitter's second wire interface), 1-12 (receiver's first wire interface), and 1-13 (receiver's second wire interface) for connecting the wires inside and outside the vacuum tube 1-8, ensuring smooth current conduction. Copper foil wires are used for transmitting wire 1-2 and receiving wire 1-11, and for transmitting coil 1-6 and receiving coil 1-10, to avoid potential gas generation problems caused by organic matter in the outer sheath when using ordinary wires or Litz wire. The vacuum tube 1-8 significantly improves the internal insulation performance of the system, enabling it to withstand higher voltage levels. It also improves the efficiency of the wireless power transmission system. The combination of the external insulating shell 1-5 and the internal vacuum tube 1-8, transmitting insulating plate 1-7, and receiving insulating plate 1-9 significantly improves the overall insulation performance and withstand voltage level of the magnetically coupled wireless power transmission system.

[0027] The transmitting end coil 1-6 and the receiving end coil 1-10 are fixed on the transmitting end insulating plate 1-7 and the receiving end insulating plate 1-9 respectively. By adjusting the relative position between the transmitting end insulating plate 1-7 and the receiving end insulating plate 1-9, the relative distance between the transmitting end coil 1-6 and the receiving end coil 1-10 can be adjusted to achieve better energy transmission effect and improve energy transmission efficiency.

[0028] As shown in Figure 2 The transmitting circuit 1-1 includes a power supply module 2-1, an inverter module 2-2, a communication module 2-3, a control module 2-4 and a compensation resonance module 2-5. The inverter module 2-2 of the transmitting circuit 1-1 adjusts the direct current voltage generated by the power supply module 2-1 to an alternating current voltage with a preset frequency and amplitude, and performs compensation through the compensation resonance module 2-5. The communication module 2-3 in the transmitting circuit 1-1 is used for signal transmission with the communication module in the receiving circuit 1-14, and the control module 2-4 is used for adjusting circuit parameters to ensure stable operation of the transmitting circuit.

[0029] As shown in Figure 3 The receiving circuit 1-14 includes a compensation resonance module 3-1, a rectifier module 3-2, a communication module 3-3, a control module 3-4 and a DC / DC conversion module 3-5. The alternating current voltage acting on the receiving circuit 1-14 is compensated by the compensation resonance module 3-1, and then adjusted to a direct current voltage by the rectifier module 3-2, and then adjusted to a suitable amplitude by the DC / DC conversion module 3-5 to act on the electrical equipment 1-15. The communication module 3-3 in the receiving circuit 1-14 transmits signals with the communication module of the transmitting circuit 1-1, and the control module 3-4 adjusts the circuit parameters to ensure stable operation of the receiving circuit.

[0030] As shown in Figure 4 The winding mode of the transmitting end coil 1-6 and the receiving end coil 1-10 includes a planar circular winding mode 4-1, a rectangular winding mode 4-2, a three-dimensional spiral winding mode 4-3 and other winding modes. A magnetic core can be installed on the transmitting end coil 1-6 and the receiving end coil 1-10 as needed, and the frequency required for energy transmission can be greatly reduced by installing the magnetic core.

Claims

1. A magnetic coupled wireless power transfer system in vacuum, characterized by: The application relates to a magnetic coupling wireless energy transmission system, which comprises a vacuum tube (1-8), an insulating shell (1-5) arranged outside the vacuum tube (1-8), a transmitting end insulating plate (1-7) and a receiving end insulating plate (1-9) arranged inside the vacuum tube (1-8), the transmitting end insulating plate (1-7) and the receiving end insulating plate (1-9) are provided with through holes to ensure the up-down communication of the vacuum tube (1-8), a transmitting end coil (1-6) and a receiving end coil (1-10) are respectively wound on the transmitting end insulating plate (1-7) and the receiving end insulating plate (1-9), the transmitting end coil (1-6) and the receiving end coil (1-10) are connected with a transmitting circuit (1-1) and a receiving circuit (1-14) through transmitting end lead wires (1-2) and receiving end lead wires (1-11) respectively, and the receiving circuit (1-14) is connected with an electric device (1-15); the transmitting circuit (1-1) transmits an alternating voltage with a preset amplitude and frequency to the transmitting end coil (1-6) through the transmitting end lead wires (1-2), the transmitting end coil (1-6) generates an electromagnetic field in the vacuum tube (1-8) and transmits energy to the receiving end coil (1-10), and the alternating voltage induced on the receiving end coil (1-10) is transmitted to the receiving circuit (1-14) through the receiving end lead wires (1-11) and is used on the electric device (1-15) after being adjusted to a required waveform.

2. A magnetic coupling wireless power transmission system in vacuum according to claim 1, characterized in that: The transmitting circuit (1-1) comprises a power supply module (2-1), an inverter module (2-2), a communication module (2-3), a control module (2-4) and a compensation resonance module (2-5); the inverter module (2-2) of the transmitting circuit (1-1) adjusts a direct current voltage generated by the power supply module (2-1) to an alternating voltage with a preset frequency and amplitude, the alternating voltage is compensated through the compensation resonance module (2-5), the communication module (2-3) in the transmitting circuit (1-1) is used for signal transmission with the communication module in the receiving circuit (1-14), and the control module (2-4) is used for adjusting circuit parameters to ensure the stable work of the transmitting circuit.

3. A magnetic coupling wireless power transmission system in vacuum according to claim 1, characterized in that: The receiving circuit (1-14) comprises a compensation resonance module (3-1), a rectifier module (3-2), a communication module (3-3), a control module (3-4) and a DC / DC conversion module (3-5); the alternating voltage acting on the receiving circuit (1-14) is compensated through the compensation resonance module (3-1), is adjusted to a direct current voltage through the rectifier module (3-2), is adjusted to a required amplitude through the DC / DC conversion module (3-5) and is used on the electric device (1-15); the communication module (3-3) in the receiving circuit (1-14) is used for signal transmission with the communication module of the transmitting circuit (1-1), and the control module (3-4) is used for adjusting circuit parameters to ensure the stable work of the receiving circuit.

4. The magnetic coupling wireless power transmission system in vacuum according to claim 1, characterized in that: The combination of the external insulating shell (1-5), the internal vacuum tube (1-8) and the transmitting end insulating plate (1-7) and the receiving end insulating plate (1-9) can greatly improve the insulation performance and voltage resistance level of the whole magnetic coupling wireless energy transmission system.

5. A magnetic coupling wireless power transmission system in vacuum according to claim 1, characterized in that: The winding mode of the transmitting coil (1-6) and the receiving coil (1-10) adopts a planar circular winding mode (4-1), a rectangular winding mode (4-2) or a three-dimensional spiral winding mode (4-3); and a magnetic core is installed on the transmitting coil (1-6) and the receiving coil (1-10) according to the situation.

6. A magnetic coupling wireless power transmission system in vacuum according to claim 1, characterized in that: The transmitting wire (1-2) and the receiving wire (1-11), the transmitting coil (1-6) and the receiving coil (1-10) all use copper foil wires, so as to avoid the gas production problem that may occur to the outer organic matter when ordinary wires or Litz wires are used.

7. A magnetic coupling wireless power transmission system in vacuum according to claim 1, characterized in that: The relative distance between the transmitting coil (1-6) and the receiving coil (1-10) is adjusted by adjusting the relative position between the transmitting insulating plate (1-7) and the receiving insulating plate (1-9), so as to achieve a better energy transmission effect and improve the energy transmission efficiency.

8. The magnetic coupling wireless power transmission system in vacuum according to claim 1, characterized in that: The insulating shell (1-5) is made of ceramic or insulating glass, and has good insulation function.

9. The magnetic coupling wireless power transmission system in vacuum according to claim 1, characterized in that: The transmitting insulating plate (1-7) and the receiving insulating plate (1-9) are made of ceramic insulating material.

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