Photovoltaic heat preservation off-grid unmanned aerial vehicle garage

Abstract

The photovoltaic heat preservation off-grid unmanned aerial vehicle garage comprises a box body, the outer side of the top of the box body is provided with a parking plate used for parking unmanned aerial vehicles, the parking plate is provided with a protection cover used for protecting the unmanned aerial vehicles, and the protection cover is arranged on the parking plate in a sliding mode; the system further comprises a power supply system used for charging the unmanned aerial vehicle. The power supply system comprises a photovoltaic cell panel, a photovoltaic controller, an energy storage battery pack and a conversion circuit. Electric energy generated by the photovoltaic cell panel is connected to the direct current bus through the photovoltaic controller, the energy storage battery pack is connected to the direct current bus through the conversion circuit, the direct current bus is connected to the wireless charging device, and the wireless charging device charges the unmanned aerial vehicle; the system further comprises an unmanned aerial vehicle garage management unit, the unmanned aerial vehicle garage management unit comprises a controller, a driving module used for driving the protective cover to be opened and closed and a heating unit, and the control output end of the controller is connected to the control input end of the driving module. And the controller is in communication connection with the heating unit and is used for controlling the heating unit to heat the interior of the box body.

Description

Technical Field

[0001] The invention relates to an unmanned aerial vehicle hangar, in particular to an off-grid unmanned aerial vehicle hangar with photovoltaic insulation. Background Art

[0002] At present, the main problem with the application of drone hangar systems in low-temperature areas is that the normal operating temperature of lithium batteries is between 0℃ and 40℃. In the high-altitude and low-temperature environment below -20℃, the battery energy storage and discharge performance decays sharply.

[0003] In the prior art, a strong heat insulation layer is provided on the outside of the energy storage power station to ensure the normal operating temperature of the internal energy storage battery and electrical system. However, if it is left for a long time, the internal heat will continue to be lost, causing the temperature to be lower than the starting temperature of the energy storage power station. At the same time, the external heat is difficult to transfer to the inside of the energy storage power station. Since insulation requires active heat generation, it will also consume a part of the electrical energy. If the battery is kept at the operating temperature, a large amount of electrical energy will be consumed for heating. As a result, the battery in the energy storage station cannot meet the charging needs of the drone, thus affecting the use of the drone.

[0004] Therefore, in order to solve the above technical problems, it is urgent to propose a new technical means. Summary of the invention

[0005] In view of this, the purpose of the present invention is to provide a photovoltaic-insulated off-grid drone hangar, which can adjust the ambient temperature in the drone hangar in real time and accurately according to the actual charge and temperature of the energy storage battery pack, and use photovoltaics to generate electricity to provide corresponding energy, thereby effectively ensuring that the energy storage battery pack in the drone hangar is always at a suitable temperature during operation, thereby preventing the low temperature from affecting the charging and discharging of the energy storage battery, and ensuring the stable operation of the drone.

[0006] The present invention provides a photovoltaic heat-insulated off-grid UAV hangar, comprising a box body, a parking board for parking UAVs is arranged on the outer side of the top of the box body, the parking board is provided with a protective cover for protecting the UAV, and the protective cover is slidably arranged on the parking board;

[0007] Also included is a power supply system for charging the drone, the power supply system comprising a photovoltaic panel, a photovoltaic controller, an energy storage battery pack, and a conversion circuit;

[0008] The electric energy generated by the photovoltaic panel is connected to the DC bus through a photovoltaic controller, the energy storage battery pack is connected to the DC bus through a conversion circuit, the DC bus is connected to a wireless charging device, and the wireless charging device charges the drone;

[0009] It also includes a drone hangar management unit, which includes a controller, a driving module for driving the opening and closing of the protective cover, and a heating unit. The control output end of the controller is connected to the control input end of the driving module. The controller is communicated with the heating unit to control the heating unit to heat the inside of the box.

[0010] Furthermore, it also includes a fuel power generation unit, which includes a fuel generator, an AC-DC conversion circuit and a fuel generator controller. The power output end of the fuel generator is connected to the input end of the AC-DC conversion circuit. The AC-DC conversion circuit converts the AC power output by the fuel generator into DC power and outputs it to the DC bus. The fuel generator controller is communicatively connected to the controller and is used to control the operation of the fuel generator.

[0011] Furthermore, the heating unit includes a heating controller and a thermal film heater, the thermal film heater is used to heat the internal environment of the box, the heating controller is communicatively connected to the controller, and the heating controller is used to control the operation of the thermal film heater.

[0012] Furthermore, it also includes a wireless communication module, which is communicatively connected to the controller. The wireless communication module is used for the controller to communicate with the drone and detect whether the drone arrives at or leaves the shutdown board. The controller is also communicatively connected to the monitoring center via the wireless communication module.

[0013] Furthermore, the photovoltaic panel is a roll-type flexible photovoltaic panel, and the photovoltaic panel can be folded into a box, and an insulation layer is provided on the inner side of the side wall of the box.

[0014] Furthermore, the controller manages the drone library by the following method:

[0015] S1. The controller determines whether the current state of charge (SOC) of the energy storage battery pack is less than or equal to 20%. If so, the controller obtains the weather conditions at the current time and the set time period in the future, and predicts the power generated by the photovoltaic panel based on the weather conditions;

[0016] S2. The controller determines whether the current load is 0, if yes, it proceeds to step S3, if no, it proceeds to step S4;

[0017] S3. The controller calculates the power generation of the photovoltaic panel according to the power prediction value of the photovoltaic panel, and determines the difference between the power generation of the photovoltaic panel and the charging demand of the energy storage battery pack. If the difference is greater than 0, the controller determines whether the current temperature of the energy storage battery pack is less than the minimum allowable temperature. If so, the controller preferentially outputs a control instruction to the heating controller to control the hot film heater to heat the energy storage battery pack, and stops heating when the temperature of the energy storage battery pack reaches the minimum allowable temperature; the controller controls the conversion circuit to charge the energy storage battery pack; if not, the controller directly controls the conversion circuit to charge the energy storage battery pack;

[0018] If the difference between the power generation of the photovoltaic panel and the charging demand of the energy storage battery group is less than 0, the controller generates a control signal according to the difference between the power generation of the photovoltaic panel and the charging demand of the energy storage battery group and outputs a value to the fuel generator controller. The fuel generator controller works according to the control signal, and the photovoltaic panel and the fuel generator generate electricity simultaneously;

[0019] The controller determines whether the current temperature of the energy storage battery pack is less than the minimum allowable temperature. If so, the controller preferentially outputs a control instruction to the heating controller to control the thermal film heater to heat the energy storage battery pack, and stops heating when the temperature of the energy storage battery pack reaches the minimum allowable temperature; the controller controls the conversion circuit to charge the energy storage battery pack; if not, the controller directly controls the conversion circuit to charge the energy storage battery pack;

[0020] S4. The controller determines whether the power prediction value of the photovoltaic panel is greater than the load power. If so, the power generated by the photovoltaic panel is used to supply power to the load, and the excess power is preferentially supplied to the thermal film heater. When the energy storage battery pack reaches the set temperature, the heating is stopped, and the excess power is used to charge the energy storage battery pack;

[0021] If the power of the photovoltaic panel is less than the load power, the difference between the predicted power of the photovoltaic panel and the load power is calculated, and the controller generates a control signal according to the difference to control the operation of the fuel generator.

[0022] Further, the controller outputs the control instruction to the heating controller specifically including:

[0023] Obtaining the energy storage battery pack status information, including the state of charge of the energy storage battery pack, the high state of charge of the energy storage battery pack, the low state of charge of the energy storage battery pack, the working state of the energy storage battery pack, and the ambient temperature of the box;

[0024] Construct a decision tree, complete the training of the decision tree, and input the state information of the energy storage battery pack into the decision tree to predict the required temperature value T of the heating controller for heating the energy storage battery pack. s ;

[0025] Calculate the difference between the current temperature value and the required temperature value e(t): e(t) = T s -T r ;

[0026] The control signal u(t) output by the controller to the heating controller is determined: u(t)=K·e(t), wherein K is the control gain, and the heating controller controls the operation of the hot film heater according to the control signal u(t).

[0027] Furthermore, the controller predicts the power generated by the photovoltaic panel according to the weather conditions, specifically including:

[0028] The controller obtains information on light intensity and cloud cover within a future set time period;

[0029] Constructing a photovoltaic power generation prediction model:

[0030] P pv , future=a+β×SolarRadiation+γ×CloudCover;

[0031] Among them: α, β and γ are prediction coefficients, SolarRadiation represents the light intensity in the set future time period, and CloudCover represents the cloud cover in the set future time period.

[0032] Beneficial effects of the present invention: Through the present invention, the ambient temperature in the drone hangar can be adjusted in real time and accurately according to the actual charge and temperature of the energy storage battery pack, and photovoltaic power generation is used to provide corresponding energy, thereby effectively ensuring that the energy storage battery pack in the drone hangar is always at a suitable temperature during operation, thereby preventing the low temperature from affecting the charging and discharging of the energy storage battery, and ensuring the stable operation of the drone. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0034] Figure 1 It is a structural schematic diagram of the present invention.

[0035] Figure 2 for Figure 1 Schematic diagram of the collapsed structure.

[0036] Figure 3 Schematic diagram of the energy storage battery pack structure.

[0037] Figure 4 It is a schematic diagram of the electrical structure of the present invention. DETAILED DESCRIPTION

[0038] The present invention is further described in detail below:

[0039] The present invention provides a photovoltaic heat-insulated off-grid drone hangar, comprising a box body 3, a parking board 6 for parking drones is arranged on the top outer side of the box body, and the parking board 6 is provided with a protective cover 1 for protecting the drone, and the protective cover is slidably arranged on the parking board; Figure 1 As shown, two protective covers are provided, and the two protective covers can slide toward each other, and the power is realized by an existing driving method, for example: a gear is provided under the stop plate, and then a rack is fixedly provided at the lower edge of the protective cover, the gear is driven by an existing electrode, the gear and the rack are meshed, and when the gear rotates, the protective cover can be driven to slide;

[0040] Among them, an electric push rod 5 is arranged on the parking board, and the electric push rod is controlled by a controller. When the UAV stops on the parking board, the electric push rod pushes the UAV to slide so that the UAV is placed in the center of the parking board for easy charging.

[0041] It also includes a power supply system for charging the drone, the power supply system including a photovoltaic panel 4, a photovoltaic controller 13, an energy storage battery group 7 and a conversion circuit 10;

[0042] The electric energy generated by the photovoltaic panel is connected to the DC bus through a photovoltaic controller, the energy storage battery pack is connected to the DC bus through a conversion circuit, the DC bus is connected to a wireless charging device, and the wireless charging device charges the drone; wherein the wireless charging device is arranged below the shutdown board and located at the center of the shutdown board, and the wireless charging device of the drone is a prior art and will not be described in detail here;

[0043] It also includes a drone hangar management unit, which includes a controller 11, a driving module for driving the opening and closing of the protective cover, and a heating unit 9. The control output end of the controller is connected to the control input end of the driving module. The controller is connected to the heating unit in communication to control the heating unit to heat the inside of the box. Through the present invention, the ambient temperature in the drone hangar can be adjusted in real time and accurately according to the actual charge and temperature of the energy storage battery pack, and photovoltaic power generation is used to provide corresponding energy, so that the energy storage battery pack in the drone hangar can be effectively ensured to be at a suitable temperature during operation, thereby preventing the low temperature from affecting the charging and discharging of the energy storage battery and ensuring the stable operation of the drone. Among them, the conversion circuit adopts an existing bidirectional DC-DC conversion circuit, that is, the direct current of the DC bus can be used to supply power to the energy storage battery pack through the circuit, and the electric energy of the energy storage battery pack can be output to the DC bus through the circuit, and then supply power to the load, wherein the load mentioned below is the wireless charging device for charging the drone, and whether the load power is 0 means whether the wireless charging device is in a working state, and when it is working, it is not 0.

[0044] In this embodiment, a fuel-fired power generation unit is also included, and the fuel-fired power generation unit includes a fuel-fired generator 8, an AC-DC conversion circuit, and a fuel-fired generator controller. The power output end of the fuel-fired generator is connected to the input end of the AC-DC conversion circuit. The AC-DC conversion circuit converts the AC power output by the fuel-fired generator into DC power and outputs it to the DC bus. The fuel-fired generator controller is communicatively connected to the controller and is used to control the operation of the fuel-fired generator. The fuel-fired generator can adopt an existing gasoline generator or a diesel generator, and the AC-DC conversion circuit adopts an existing AC-DC conversion circuit to convert AC and DC into DC. In order to save electricity for heating, a copper tube 16 is fixedly provided on the outside of the energy storage battery pack. The copper tube is connected to the exhaust port of the fuel-fired generator, and the waste heat of the exhaust gas is used to heat the energy storage battery pack.

[0045] In this embodiment, the heating unit 9 includes a heating controller 12 and a thermal film heater 15. The thermal film heater is used to heat the internal environment of the box. The heating controller is communicated with the controller. The heating controller is used to control the operation of the thermal film heater. The battery cell 14 of the energy storage battery pack is covered by the thermal film heater.

[0046] In this embodiment, a wireless communication module 2 is also included, and the wireless communication module is communicatively connected to the controller. The wireless communication module is used for the controller to communicate with the drone and detect whether the drone arrives at or leaves the shutdown board. The controller is also communicatively connected to the monitoring center via the wireless communication module.

[0047] In this embodiment, the photovoltaic panel 4 is a roll-type flexible photovoltaic panel, and the photovoltaic panel can be folded into the box 3, and an insulation layer is provided on the inner side of the side wall of the box.

[0048] In this embodiment, the controller manages the drone library by the following method:

[0049] S1. The controller determines whether the current state of charge (SOC) of the energy storage battery pack is less than or equal to 20%. If so, the controller obtains the weather conditions at the current time and the set time period after the current time, and predicts the power generated by the photovoltaic panel according to the weather conditions; wherein the energy storage battery pack is generally a battery management circuit, referred to as BMS, and the controller obtains the temperature and state of charge information of the battery pack through the device, and can also set a temperature sensor separately to obtain the temperature of the energy storage battery pack;

[0050] S2. The controller determines whether the current load is 0, if yes, it proceeds to step S3, if no, it proceeds to step S4;

[0051] S3. The controller calculates the power generation of the photovoltaic panel according to the power prediction value of the photovoltaic panel, and determines the difference between the power generation of the photovoltaic panel and the charging demand of the energy storage battery pack. If the difference is greater than 0, the controller determines whether the current temperature of the energy storage battery pack is less than the minimum allowable temperature. If so, the controller preferentially outputs a control instruction to the heating controller to control the hot film heater to heat the energy storage battery pack, and stops heating when the temperature of the energy storage battery pack reaches the minimum allowable temperature; the controller controls the conversion circuit to charge the energy storage battery pack; if not, the controller directly controls the conversion circuit to charge the energy storage battery pack;

[0052] If the difference between the power generation of the photovoltaic panel and the charging demand of the energy storage battery group is less than 0, the controller generates a control signal according to the difference between the power generation of the photovoltaic panel and the charging demand of the energy storage battery group and outputs a value to the fuel generator controller. The fuel generator controller works according to the control signal, and the photovoltaic panel and the fuel generator generate electricity simultaneously;

[0053] The controller determines whether the current temperature of the energy storage battery pack is less than the minimum allowable temperature. If so, the controller preferentially outputs a control instruction to the heating controller to control the thermal film heater to heat the energy storage battery pack, and stops heating when the temperature of the energy storage battery pack reaches the minimum allowable temperature; the controller controls the conversion circuit to charge the energy storage battery pack; if not, the controller directly controls the conversion circuit to charge the energy storage battery pack;

[0054] S4. The controller determines whether the power prediction value of the photovoltaic panel is greater than the load power. If so, the power generated by the photovoltaic panel is used to supply power to the load, and the excess power is preferentially supplied to the thermal film heater. When the energy storage battery pack reaches the set temperature, the heating is stopped, and the excess power is used to charge the energy storage battery pack;

[0055] If the power of the photovoltaic panel is less than the load power, the difference between the predicted power of the photovoltaic panel and the load power is calculated, and the controller generates a control signal according to the difference to control the operation of the fuel generator.

[0056] In this embodiment, the controller outputs the control instruction to the heating controller specifically including:

[0057] Obtaining the energy storage battery pack status information, including the state of charge of the energy storage battery pack, the high state of charge of the energy storage battery pack, the low state of charge of the energy storage battery pack, the working state of the energy storage battery pack, and the ambient temperature of the box; the ambient temperature is collected through the existing temperature sensor;

[0058] Construct a decision tree, complete the training of the decision tree, and input the state information of the energy storage battery pack into the decision tree to predict the required temperature value T of the heating controller for heating the energy storage battery pack. s ;

[0059] Among them, the decision tree model is an existing technology and will not be described in detail here;

[0060] Calculate the difference between the current temperature value and the required temperature value e(t): e(t) = T s -T r ;

[0061] The control signal u(t) output by the controller to the heating controller is determined: u(t)=K·e(t), wherein K is the control gain, and the heating controller controls the operation of the hot film heater according to the control signal u(t).

[0062] In this embodiment, the controller predicts the power generated by the photovoltaic panel according to the weather conditions, specifically including:

[0063] The controller obtains information on light intensity and cloud cover within a future set time period;

[0064] Constructing a photovoltaic power generation prediction model:

[0065] P pv , future=a+β×SolarRadiation+γ×CloudCover;

[0066] Among them: α, β and γ are all prediction coefficients, SolarRadiation represents the light intensity in the set future time period, and CloudCover represents the cloud cover in the set future time period. Through the above process, good energy management can be achieved for the drone hangar, which can not only ensure the health of the energy storage battery pack of the drone hangar, but also play a certain energy-saving role.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A photovoltaic heat-insulated off-grid drone hangar, characterized by: It comprises a box body, the top outer side of the box body is provided with a parking board for parking the drone, the parking board is provided with a protective cover for protecting the drone, and the protective cover is slidably arranged on the parking board; Also included is a power supply system for charging the drone, the power supply system comprising a photovoltaic panel, a photovoltaic controller, an energy storage battery pack, and a conversion circuit; The electric energy generated by the photovoltaic panel is connected to the DC bus through a photovoltaic controller, the energy storage battery pack is connected to the DC bus through a conversion circuit, the DC bus is connected to a wireless charging device, and the wireless charging device charges the drone; It also includes a drone hangar management unit, which includes a controller, a driving module for driving the opening and closing of the protective cover, and a heating unit. The control output end of the controller is connected to the control input end of the driving module. The controller is communicated with the heating unit to control the heating unit to heat the inside of the box.

2. The photovoltaic heat-insulated off-grid drone hangar according to claim 1, characterized in that: It also includes a fuel power generation unit, which includes a fuel generator, an AC-DC conversion circuit and a fuel generator controller. The power output end of the fuel generator is connected to the input end of the AC-DC conversion circuit. The AC-DC conversion circuit converts the AC power output by the fuel generator into DC power and outputs it to the DC bus. The fuel generator controller is communicatively connected to the controller and is used to control the operation of the fuel generator.

3. The photovoltaic heat-insulated off-grid drone hangar according to claim 2, characterized in that: The heating unit includes a heating controller and a thermal film heater, wherein the thermal film heater is used to heat the internal environment of the box, and the heating controller is communicatively connected with the controller, and the heating controller is used to control the operation of the thermal film heater.

4. The photovoltaic heat-insulated off-grid drone hangar according to claim 4, characterized in that: It also includes a wireless communication module, which is communicatively connected to the controller. The wireless communication module is used for the controller to communicate with the drone and detect whether the drone arrives at or leaves the shutdown board. The controller is also communicatively connected to the monitoring center via the wireless communication module.

5. The photovoltaic heat-insulated off-grid drone hangar according to claim 4, characterized in that: The photovoltaic cell panel is a roll-type flexible photovoltaic panel, and the photovoltaic cell panel can be folded into a box, and a heat preservation layer is arranged on the inner side of the side wall of the box.

6. The photovoltaic heat-insulated off-grid drone hangar according to claim 4, characterized in that: The controller manages the drone library through the following methods: S1. The controller determines whether the current state of charge (SOC) of the energy storage battery pack is less than or equal to 20%. If so, the controller obtains the weather conditions at the current time and the set time period in the future, and predicts the power generated by the photovoltaic panel based on the weather conditions; S2. The controller determines whether the current load is 0. If so, it proceeds to step S3; if not, it proceeds to step S4; S3. The controller calculates the power generation of the photovoltaic panel according to the power prediction value of the photovoltaic panel, and determines the difference between the power generation of the photovoltaic panel and the charging demand of the energy storage battery pack. If the difference is greater than 0, the controller determines whether the current temperature of the energy storage battery pack is less than the minimum allowable temperature. If so, the controller preferentially outputs a control instruction to the heating controller to control the hot film heater to heat the energy storage battery pack, and stops heating when the temperature of the energy storage battery pack reaches the minimum allowable temperature; the controller controls the conversion circuit to charge the energy storage battery pack; if not, the controller directly controls the conversion circuit to charge the energy storage battery pack; If the difference between the power generation of the photovoltaic panel and the charging demand of the energy storage battery group is less than 0, the controller generates a control signal according to the difference between the power generation of the photovoltaic panel and the charging demand of the energy storage battery group and outputs a value to the fuel generator controller. The fuel generator controller works according to the control signal, and the photovoltaic panel and the fuel generator generate electricity simultaneously; The controller determines whether the current temperature of the energy storage battery pack is less than the minimum allowable temperature. If so, the controller preferentially outputs a control instruction to the heating controller to control the thermal film heater to heat the energy storage battery pack, and stops heating when the temperature of the energy storage battery pack reaches the minimum allowable temperature; the controller controls the conversion circuit to charge the energy storage battery pack; if not, the controller directly controls the conversion circuit to charge the energy storage battery pack; S4. The controller determines whether the power prediction value of the photovoltaic panel is greater than the load power. If so, the power generated by the photovoltaic panel is used to supply power to the load, and the excess power is preferentially supplied to the thermal film heater. When the energy storage battery pack reaches the set temperature, the heating is stopped, and the excess power is used to charge the energy storage battery pack; If the power of the photovoltaic panel is less than the load power, the difference between the predicted power of the photovoltaic panel and the load power is calculated, and the controller generates a control signal according to the difference to control the operation of the fuel generator.

7. The photovoltaic heat-insulated off-grid drone hangar according to claim 6, characterized in that: The controller outputs a control instruction to the heating controller specifically including: Obtaining the energy storage battery pack status information, including the state of charge of the energy storage battery pack, the high state of charge of the energy storage battery pack, the low state of charge of the energy storage battery pack, the working state of the energy storage battery pack, and the ambient temperature of the box; Construct a decision tree, complete the training of the decision tree, and input the state information of the energy storage battery pack into the decision tree to predict the required temperature value T of the heating controller for heating the energy storage battery pack. s ; Calculate the difference between the current temperature value and the required temperature value e(t): e(t) = T s -T r ; The control signal u(t) output by the controller to the heating controller is determined: u(t)=K·e(t), wherein K is the control gain, and the heating controller controls the operation of the hot film heater according to the control signal u(t).

8. The photovoltaic heat-insulated off-grid drone hangar according to claim 6, characterized in that: The controller predicts the power generated by the photovoltaic panel according to the weather conditions and specifically includes: The controller obtains information on light intensity and cloud cover within a future set time period; Constructing a photovoltaic power generation prediction model: P pv ,future=a+β×SolarRadiation+γ×CloudCover; Among them: α, β and γ are prediction coefficients, SolarRadiation represents the light intensity in the set future time period, and CloudCover represents the cloud cover in the set future time period.

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