Dual-emission single-pickup type wireless power supply device

Abstract

The utility model discloses a dual-emission single-pickup type wireless power supply device which comprises a ground control unit, a charging unit and an unmanned aerial vehicle. The ground control unit comprises a switch button, an electricity storage cabinet module, an elevated tower, an unmanned aerial vehicle charging parking platform and a power line module which are connected in sequence; the charging unit comprises a high-frequency converter module and a double-transmitting coil group which are connected in sequence; the unmanned aerial vehicle power supply unit comprises a receiving coil, a rectifying and filtering module and an unmanned aerial vehicle battery; according to the device, electricity is taken through a direct-current bus of 1000V-1500V after inversion of a photovoltaic module in a photovoltaic station, and energy is transmitted to an unmanned aerial vehicle needing to be charged during high-altitude operation through a wireless electric energy transmission device.

Description

Technical Field

[0001] The utility model belongs to the technical field of wireless power transmission, and in particular relates to a dual-transmitting single-pickup type wireless power supply device. Background Art

[0002] Drones are small in size, light in weight, easy to operate, and can replace humans in dangerous operations in many situations. In addition, drones have a wide range of applications and have been used in many fields such as agriculture, aerial photography, logistics and other operational scenarios. However, due to the limitations of current drone technology development, drones have also exposed the following problems in actual applications: 1. Currently, drones generally use battery boxes to charge drone batteries, making the drone battery charging method relatively simple; 2. Currently, drones can generally only fly for about 30 minutes, revealing that the drone battery life is short; 3. It is very difficult to maintain the drone's battery life by frequently replacing batteries in heavy battery boxes. These problems with drone battery life have also limited the promotion and application of drones today.

[0003] Wireless power transmission technology based on magnetic coupling resonance has the advantages of long transmission distance, high efficiency and high power, which provides a solution to the problem of poor endurance of current drones. For the drones used today, how to wirelessly charge the drones when they are operating at high altitudes and improve the endurance of the drones is a technical problem to be solved by this utility model. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a dual-transmitter single-pickup wireless power supply device, which uses the DC bus 1000V~1500V of the photovoltaic components in the photovoltaic station after inversion to draw power, and supplies power to the drone battery through a wireless power transmission device and a rectifier and filter module.

[0005] To achieve the above-mentioned purpose, the utility model provides a dual-transmitter single-pickup type wireless power supply device, including: a ground control unit, a charging unit, and a drone;

[0006] The ground control unit is electrically connected to the charging unit; the charging unit is electrically connected to the drone.

[0007] Preferably, the ground control unit includes a switch button, a power storage cabinet module, an elevated tower, a UAV charging docking platform, and a power line module;

[0008] The power storage cabinet module is electrically connected to the power line module inside the elevated tower; the power storage cabinet module is connected to a switch button.

[0009] Preferably, the electric energy stored in the power storage cabinet module comes from the 1000V to 1500V DC bus of the photovoltaic components in the photovoltaic station after being inverted.

[0010] Preferably, the switch button manually controls the opening and closing of the power storage cabinet module when the drone needs to be charged;

[0011] The switch button can be remotely controlled, and when a worker is at a far distance, the switch button can be remotely controlled to cause the power storage cabinet module to perform a disconnection operation.

[0012] Preferably, the charging unit comprises a high-frequency converter module and a dual transmitting coil group connected in sequence;

[0013] The high-frequency converter module is electrically connected to the power line module inside the elevated tower; the high-frequency converter module is connected to the two transmitting coils of the dual transmitting coil group.

[0014] Preferably, the high-frequency converter module is composed of four identical power MOS tubes of model SBT20L60 connected together.

[0015] Preferably, during charging of the drone, the high-frequency converter module, the dual transmitting coil group, and the drone are all on the drone charging docking platform.

[0016] Preferably, the drone includes a receiving coil, a rectifier filter module, and a drone battery;

[0017] The drone battery is electrically connected to the rectification and filtering module; the rectification and filtering module is electrically connected to the receiving coil;

[0018] The receiving coil and the rectifying and filtering module are both on the drone.

[0019] Compared with the prior art, the utility model has the following advantages and technical effects:

[0020] The technical solution of the utility model utilizes a dual-transmitter single-pickup wireless power supply device, which effectively solves the current problems of single UAV charging method, short battery life, and inconvenience of using battery boxes to replace batteries; it enables the UAV to replenish electricity in areas with photovoltaic power supply to extend its working time and improve the UAV's operating efficiency and quality; the device is easy to install and low in cost, has high economic and social benefits, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of charging a drone based on a dual-transmitter single-pickup wireless power supply device of the utility model;

[0023] Figure 2 This is a magnetic field line distribution diagram of the utility model under the condition of magnetic coupling resonance of the double-transmitting single-pickup coil;

[0024] Figure 3 It is a circuit diagram of the high-frequency converter module 5 in the dual-transmitter single-pickup wireless power supply device of the utility model;

[0025] Figure 4 This is a schematic diagram of an equivalent circuit model of a double-transmitting single-pickup three-coil system of the utility model;

[0026] Figure 5 This is the overall structure flow chart of the utility model;

[0027] Description of the drawings: 1- switch button, 2- power storage cabinet module, 3- elevated tower, 4- power line module, 5- high frequency converter module, 6- dual transmitting coil group, 7- receiving coil, 8- rectifier filter module, 9- drone battery, 10- power MOS tube, 11- drone, 12- drone charging docking platform. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be understood that when used in the present utility model specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or collections thereof.

[0030] It should also be understood that the terms used in the utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0031] Example

[0032] like Figure 1-2 As shown, the utility model provides a dual-transmitting single-pickup type wireless power supply device, including: a ground control unit, a charging unit, and a drone 11;

[0033] The ground control unit is electrically connected to the charging unit; the charging unit is electrically connected to the UAV 11.

[0034] In this embodiment, the ground control unit includes a switch button 1, a power storage cabinet module 2, an elevated tower 3, a drone charging docking platform 12, and a power line module 4;

[0035] The power storage cabinet module 2 is electrically connected to the power line module 4 inside the elevated tower 3 ; the power storage cabinet module 2 is connected to the switch button 1 .

[0036] In this embodiment, the electric energy stored in the power storage cabinet module 2 comes from the DC bus 1000V~1500V power taken from the photovoltaic components in the photovoltaic station after inversion, and the power storage cabinet module 2 can use a rechargeable battery.

[0037] In this embodiment, the switch button 1 manually controls the opening and closing of the power storage cabinet module 2 when the drone 11 needs to be charged;

[0038] The switch button 1 can be remotely controlled. When a worker is far away, the switch button 1 can be remotely controlled to make the power storage cabinet module 2 perform a disconnection operation. For details, reference can be made to the remote control switch technology and equipment in the prior art.

[0039] In this embodiment, the charging unit includes a high-frequency converter module 5 and a dual transmitting coil group 6 connected in sequence;

[0040] The high-frequency converter module 5 is electrically connected to the power line module 4 inside the elevated tower 3 ; the high-frequency converter module 5 is connected to the two transmitting coils of the dual transmitting coil group 6 .

[0041] In this embodiment, the high-frequency converter module 5 is composed of four identical power MOS tubes 10 of model SBT20L60 connected together.

[0042] In this embodiment, during charging of the drone 11 , the high-frequency converter module 5 , the dual transmitting coil group 6 , and the drone 11 are all on the drone charging docking platform 12 .

[0043] In this embodiment, the drone 11 is equipped with a receiving coil 7, a rectifier filter module 8, and a drone battery 9;

[0044] The drone battery 9 is electrically connected to the rectifier and filter module 8; the rectifier and filter module 8 is electrically connected to the receiving coil 7; the rectifier and filter module 8 can adopt a conventional rectifier and filter circuit.

[0045] The receiving coil 7 and the rectifying and filtering module 8 are both on the drone 11 .

[0046] like Figure 3 As shown, the high-frequency converter module 5 is composed of SG3525, a power MOS tube 10, a capacitor and a resistor; Pin 15 of SG3525 is connected to the input power supply, Pin 5 is connected in series with C1 and R1 and then electrically connected to Pin 6, Pin 5 is electrically connected to R2 and Pin 7, Pin 9 is electrically connected to Pin 1, Pin 2 is electrically connected to R3 and R4 and then grounded, Pin 8 is electrically connected to C2 and then grounded, Pin 13 is connected to the input power supply, Pin 11 is electrically connected to S1 and S4, Pin 14 is electrically connected to S2 and S3, S1 to S4 refer to four identical power MOS tubes, S1 and S3 are connected in series, S2 and S4 are connected in series, S1 and S3 series circuit and S2 and S4 series circuit are connected in parallel, and the power supply U DC electrically connected to a circuit in which a series circuit of S1 and S3 and a series circuit of S2 and S4 are connected in parallel; Figure 3 The working principle of the circuit diagram is: when charging a DJI M300 drone, for example, SG3525 generates PWM1 and PWM2 signals as driving signals, and the PWM1 and PWM2 signals control the alternating on and off of the power MOS tubes S1 to S4, thereby achieving the purpose of high-frequency current conversion.

[0047] Figure 4 The equivalent circuit diagram of the dual-transmitter single-pickup three-coil system includes two transmitting coils and one receiving coil. The high-frequency wireless energy is transmitted to the receiving coil by magnetic coupling resonance, and supplied to the load through a rectifier bridge and a filter capacitor. The output side uses a rectifier bridge and an LC filter circuit as the load resistor R LR Perform stable charging; U S With R s is the voltage and internal resistance of the power supply, R ti With L i (i=1,2,3) are the parasitic resistance and equivalent inductance of each coil, S V1 With S V2 They are all constant voltage switches, C3 is the primary side resonant capacitor, C C1 With C V1are the resonant capacitors connected to the transmitting coil in the constant voltage state and the constant current state, respectively, where I1, I2 and I L is the loop current of each coil of the three-coil WPT system, I S is the output current of the DC-AC converter; Figure 4 The connection relationship of each component is as follows: In the transmitting side circuit, R S with U S Series, C C1 With C V1 , S V1 The circuit after the series connection is connected in parallel, C C1 With C V1 , S V1 The circuit connected in series and then in parallel is connected with R S and U S Series connected circuit, L1, R t1 Series connection, S v2 With C2, L2, R t2 Connect in series and then connect to C V1 , S V1 After connecting in series with C C1 Circuit connected in parallel, L1, R t1 The series-connected circuits are connected in parallel, and L3, C3, and R L , R3 are connected in series; L1 and L2 generate a magnetic field, L3 on the drone senses the magnetic field and generates an induced current to generate a voltage UL to charge the drone battery 9.

[0048] like Figure 5 As shown, the overall structural process of charging a DJI M300 drone 11 is as follows: first, the photovoltaic components in the photovoltaic station are used to obtain electricity from the DC bus 1000V~1500V after inversion and store it in the power storage cabinet module 2. When it is found that the DJI M300 drone 11 needs to be charged, the DJI M300 drone 11 is docked on the drone charging docking platform 12 and the switch button 1 is pressed or remotely controlled. At this time, the electric energy in the power storage cabinet module 2 is transmitted to the elevated tower through the power line module 4 inside the elevated tower 3. 3, the UAV charging docking platform 12 at the top transmits the electric energy transmitted by the power line module 4 to the transmitting coil group 6 through the high-frequency converter module 5. According to the magnetic coupling resonance principle, the transmitting coil group 6 will transmit the electric energy to the receiving coil 7, and the battery 9 of the DJI M300 UAV can be charged through the rectifier and filter module 8. After the battery is fully charged, the switch button 1 is pressed again or remotely controlled, and the power storage cabinet module 2 will stop working. The DJI M300 UAV 11 is charged and flies away from the UAV charging docking platform 12 to continue to perform its work tasks.

[0049] The above are only preferred specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A dual-transmitter single-pickup type wireless power supply device, characterized in that: include: Ground control unit, charging unit, drone (11); The ground control unit is electrically connected to the charging unit; the charging unit is electrically connected to the drone (11); The ground control unit comprises a switch button (1), a power storage cabinet module (2), an elevated tower (3), a drone charging and docking platform (12), and a power line module (4); The power storage cabinet module (2) is electrically connected to the power line module (4) inside the elevated tower (3); the power storage cabinet module (2) is connected to the switch button (1); The charging unit comprises a high-frequency converter module (5) and a dual transmitting coil group (6) which are connected in sequence; The high-frequency converter module (5) is electrically connected to the power line module (4) inside the elevated tower (3); the high-frequency converter module (5) is connected to the two transmitting coils of the dual transmitting coil group (6); During charging of the drone (11), the high-frequency converter module (5), the dual transmitting coil group (6), and the drone (11) are all on the drone charging docking platform (12); The drone (11) comprises a receiving coil (7), a rectifying and filtering module (8), and a drone battery (9); The drone battery (9) is electrically connected to the rectifying and filtering module (8); the rectifying and filtering module (8) is electrically connected to the receiving coil (7); The receiving coil (7) and the rectifying and filtering module (8) are both on the drone (11).

2. The dual-transmitter single-pickup type wireless power supply device according to claim 1, characterized in that: The electric energy stored in the power storage cabinet module (2) comes from the 1000V to 1500V DC bus of the photovoltaic components in the photovoltaic station after being inverted.

3. The dual-transmitter single-pickup type wireless power supply device according to claim 1, characterized in that: The switch button (1) manually controls the opening and closing of the power storage cabinet module (2) when the drone (11) needs to be charged; The switch button (1) can be remotely controlled, and when a worker is at a distance, the switch button (1) can be remotely controlled to cause the power storage cabinet module (2) to perform a disconnection operation.

4. The dual-transmitter single-pickup type wireless power supply device according to claim 1, characterized in that: The high-frequency converter module (5) is composed of four identical power MOS tubes (10) of model SBT20L60 connected together.

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