Aerostat solar cell array heat insulation and heat dissipation system and control method thereof

Abstract

The invention discloses an aerostat solar cell array heat insulation and heat dissipation system and a control method thereof. Relates to the technical field of solar cell thermal management, and comprises a plurality of sections of solar cell panels which are connected end to end, the solar cell panels at the two ends are attached to an aerostat skin, the solar cell panel at the middle section is a flexible cell panel, and a movable heat dissipation device is arranged between the flexible cell panel and the aerostat skin; the bottom of the aerostat is provided with a driving assembly used for driving the heat dissipation device to move in the radial direction of the aerostat. A plurality of temperature sensors and a plurality of radiation sensors are laid on the solar cell panel; according to the control method, the highest temperature and the strongest surface radiation of the solar cell array are used as criteria, timely heat dissipation of a high-temperature area of the solar cell is facilitated, effective prevention is achieved, and safe operation of the airship and high-performance output of the solar cell are guaranteed; the movable heat dissipation device is installed below the solar cells in the top area of the aerostat and combined with the heat insulation layer, heat transfer from the solar cells to the airship capsule body can be reduced, and channels for timely convective heat transfer between the high-temperature area of the solar cell array and the atmosphere are increased.

Description

Technical Field

[0001] The present invention relates to the technical field of solar cell thermal management, and in particular to a thermal insulation and heat dissipation system for an aerostat solar cell array and a control method thereof. Background Art

[0002] The single operation time of an aerostat is relatively long. Energy storage batteries alone cannot carry enough energy to meet the energy consumption of all electrical equipment. Using solar cells to convert solar energy into electrical energy is the main way for an aerostat to obtain a steady supply of energy. The solar cell array is deployed on the upper surface of the aerostat. Solar radiation will cause the temperature of the solar cell to rise, and the temperature of the solar cell is higher than the temperature of the aerostat skin. The solar cell transfers heat to the gas inside the aerostat capsule through the aerostat skin, which will cause the aerostat to overheat and overpressure, affecting flight safety.

[0003] At present, the main way to reduce the heat transfer from solar cells to the inside of the aerostat is thermal insulation. Laying a thermal insulation layer between the solar cells and the skin of the aerostat can effectively reduce the gas temperature inside the aerostat and reduce the maximum pressure difference between the aerostat and the outside atmosphere. However, the energy output of solar cells is significantly affected by temperature. Sufficient thermal insulation will cause the temperature of solar cells to rise significantly, reducing the energy conversion efficiency of solar cells. The aerostat capsule is an axisymmetric structure, and the solar radiation and temperature distribution received on its surface are not uniform. In areas with strong solar radiation, the thermal effect weakens the energy output of the solar cell array most strongly. Summary of the invention

[0004] In order to dissipate heat from an aerostat solar panel under limited counterweight and effective heat insulation, the present application provides an aerostat solar cell array heat insulation and heat dissipation system and a control method thereof.

[0005] In a first aspect, the present application provides a heat insulation and heat dissipation system for an aerostat solar cell array, which adopts the following technical solution: A heat insulation and heat dissipation system for an aerostat solar cell array includes a plurality of solar panels connected at the ends, the solar panels are flexible panels, the solar panels at both ends are attached to the skin of the aerostat, a movable heat dissipation device is provided between the solar panels and the skin of the aerostat; a driving assembly for driving the heat dissipation device to move along the radial direction of the aerostat is provided at the bottom of the aerostat; a plurality of temperature sensors and a plurality of radiation sensors are also provided on the solar panels; The driving assembly includes a motor, a roller and a pull rope. The roller is rotatably connected to the bottom of the airship, and the rotation axis of the roller is arranged along the length direction of the airship. One end of the pull rope is wound and fixedly connected to the roller, and the other end is fixedly connected to the roller after passing through the side of the airship. The heat dissipation device is fixedly connected to the middle section of the pull rope. The motor is used to drive the roller to rotate.

[0006] Optionally, a heat insulation layer is further provided on the outer side of the aerostat skin, and the heat insulation layer is located between the aerostat skin and the heat dissipation device.

[0007] Optionally, the material of the thermal insulation layer is one of Nomex paper honeycomb, aerogel, and aluminum silicate fiber.

[0008] Optionally, the heat dissipation device is a heat dissipation plate, the heat dissipation plate is a loose structure, and a plurality of cavities are provided in the heat dissipation plate.

[0009] Optionally, the heat sink is arched, and an arch hole is formed between the heat sink and the thermal insulation layer, and the axis of the arch hole is consistent with the direction of the axis of the aerostat.

[0010] In a second aspect, the present application also discloses a control method for a heat insulation and heat dissipation system of an aerostat solar cell array, which adopts the following technical solution: A control method for a heat insulation and heat dissipation system of an aerostat solar cell array comprises the following steps: S1. Obtain the surface temperature of the solar cell by using a temperature sensor arranged on the surface of the solar cell , n is the number of temperature sensors, calculate the maximum temperature of the solar cell array , and record the location where the highest temperature occurs ; S2: Compare the maximum temperature of the solar array and the maximum temperature threshold set The relative size of , enter S3, otherwise enter S4; S3: The driving mechanism starts, and the pull rope connected to the heat dissipation mechanism is reeled in, moving the heat dissipation mechanism to ; S4: The solar radiation sensor arranged on the surface of the solar cell obtains the solar radiation received by the solar cell , m is the number of solar radiation sensors, and the strongest solar radiation received by the solar cell array is calculated , and record the location where the highest temperature occurs , enter S5; S5: Comparison of the strongest radiation received by the solar array and the set solar radiation threshold The relative size of , enter S6, otherwise return to S1; S6: The drive assembly starts, and the pull rope connected to the heat dissipation mechanism is reeled in, moving the heat dissipation mechanism to .

[0011] In summary, this application includes the following beneficial technical effects: The aerostat solar cell array heat insulation and heat dissipation system and control method of the present application installs a movable heat dissipation device under the solar cell in the top area of ​​the aerostat and combines it with the heat insulation layer, which can not only reduce the heat transfer from the solar cell to the airship capsule, but also increase the channel for timely convection heat exchange between the high temperature area of ​​the solar cell array and the atmosphere. The non-bonded solar cell array can determine its span on the airship surface according to the hull structure and mission environment, and has good designability. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is the overall structural diagram of the heat insulation and heat dissipation system of the solar cell array of the aerostat of the present application; Description of reference numerals: 1. Aerostat; 2. Solar panels; 3. Thermal insulation layer; 4. Heat dissipation device; 5. Drive assembly. DETAILED DESCRIPTION

[0013] The following is combined with Figure 1 This application is described in further detail.

[0014] The embodiment of the present application discloses a heat insulation and heat dissipation system for an aerostat solar cell array, which is used to dissipate heat from a solar cell panel on an aerostat. In the embodiment, the solar cell panel is provided with multiple sections, and the solar cell panel is a flexible cell panel that can be bent; the solar cell panels at both ends are attached to the skin of the aerostat, and a heat dissipation device and a heat insulation layer are provided between the flexible cell panel and the skin of the aerostat, and the heat insulation layer is provided outside the skin of the aerostat, and the material of the heat insulation layer is Nomex paper honeycomb, which has high thermal conductivity; the heat dissipation device is attached to the outside of the heat insulation layer, and the flexible solar cell panel is attached to the outside of the heat dissipation device. At the same time, a driving component for driving the heat dissipation device to slide along the radial direction of the aerostat to change its position is also provided at the bottom of the aerostat; and the two ends of the solar cell panel are fixedly connected to the heat insulation layer, so when the heat dissipation device moves, the position of the solar cell panel does not change, so that the heat dissipation device is moved to the position where the temperature of the solar cell panel is the highest or the position where the solar cell panel is subjected to the greatest solar radiation through the driving component.

[0015] It should be noted that the solar panels at both ends are directly attached to the insulation layer. Since they are exposed to less radiation, they usually do not need to use a heat dissipation device to dissipate heat, which also limits the movement range of the heat dissipation device. The heat dissipation device is a heat sink, which is a loose structure with many holes. During the flight of the aerostat, the airflow completes heat exchange with the solar panels through the heat sink. At the same time, this design takes into account that the weight of the heat sink itself has a certain influence on the aerostat, so the aerostat is set in a form in which the position can be adjusted as needed.

[0016] In an embodiment of the present application, the driving assembly includes a motor, a roller and a pull rope. The roller is rotatably connected to the bottom of the airship, and the rotation axis of the roller is arranged along the length direction of the airship. One end of the pull rope is wound and fixedly connected to the roller, and the other end passes between the insulation layer and the solar panel and then passes around the surface of the airship and is fixedly connected to the roller again. The heat dissipation device is fixedly connected to the middle section of the pull rope; the motor is fixedly connected to the bottom of the airship and is used to drive the roller to rotate; when the roller rotates, the pull rope drives the heat dissipation device to move, and the heat dissipation device can be driven to move in different directions by changing the forward and reverse rotation.

[0017] In order to further enhance the heat dissipation performance, the heat dissipation device is arched, and an arch hole is formed between the heat dissipation device and the thermal insulation layer. The arch hole allows wind to flow through, thereby further enhancing the heat dissipation performance.

[0018] The present application also provides a control method for a heat insulation and heat dissipation system of an aerostat solar cell array, the method comprising the following steps: S1. Obtain the surface temperature of the solar cell by using a temperature sensor arranged on the surface of the solar cell , n is the number of temperature sensors, calculate the maximum temperature of the solar cell array , and record the location where the highest temperature occurs ; S2: Compare the maximum temperature of the solar array and the maximum temperature threshold set The relative size of , enter S3, otherwise enter S4; S3: The driving mechanism starts, and the pull rope connected to the heat dissipation mechanism is reeled in, moving the heat dissipation mechanism to ; S4: The solar radiation sensor arranged on the surface of the solar cell obtains the solar radiation received by the solar cell , m is the number of solar radiation sensors, and the strongest solar radiation received by the solar cell array is calculated , and record the location where the highest temperature occurs , enter S5; S5: Comparison of the strongest radiation received by the solar array and the set solar radiation threshold The relative size of , enter S6, otherwise return to S1; S6: The drive assembly starts, and the pull rope connected to the heat dissipation mechanism is reeled in, moving the heat dissipation mechanism to .

[0019] The control method of the thermal insulation and heat dissipation system of the solar cell array of the aerostat uses the maximum temperature of the solar cell array and the strongest surface radiation as the judgment criteria, which is conducive to timely heat dissipation and effective prevention of high-temperature areas of the solar cell, thereby ensuring the safe operation of the airship and the high-performance output of the solar cell.

[0020] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A heat insulation and heat dissipation system for an aerostat solar cell array, characterized in that: The invention comprises a plurality of solar panels connected at the ends, wherein the solar panels are flexible panels, the solar panels at both ends are attached to the skin of the aerostat, and a movable heat dissipation device is arranged between the solar panels and the skin of the aerostat; a driving assembly for driving the heat dissipation device to move along the radial direction of the aerostat is arranged at the bottom of the aerostat; a plurality of temperature sensors and a plurality of radiation sensors are also arranged on the solar panels; The driving assembly includes a motor, a roller and a pull rope. The roller is rotatably connected to the bottom of the airship, and the rotation axis of the roller is arranged along the length direction of the airship. One end of the pull rope is wound and fixedly connected to the roller, and the other end is fixedly connected to the roller after passing through the side of the airship. The heat dissipation device is fixedly connected to the middle section of the pull rope. The motor is used to drive the roller to rotate.

2. The aerostat solar cell array heat insulation and heat dissipation system according to claim 1, characterized in that: A heat insulation layer is also provided on the outer side of the top of the aerostat skin, and the heat insulation layer is located between the aerostat skin and the heat dissipation device.

3. The aerostat solar cell array heat insulation and heat dissipation system according to claim 2, characterized in that: The material of the heat insulation layer is one of Nomex paper honeycomb, aerogel and aluminum silicate fiber.

4. The aerostat solar cell array heat insulation and heat dissipation system according to claim 3, characterized in that: The heat dissipation device is a heat dissipation plate, which has a loose structure and is provided with a plurality of cavities.

5. The aerostat solar cell array heat insulation and heat dissipation system according to claim 4, characterized in that: The heat dissipation plate is arched, and an arch hole is formed between the heat dissipation plate and the heat insulation layer, and the axis of the arch hole is consistent with the direction of the axis of the aerostat.

6. A control method for a heat insulation and heat dissipation system of an aerostat solar cell array, applied to the heat insulation and heat dissipation system of an aerostat solar cell array as claimed in claim 5, characterized in that The steps include: S1. Obtain the surface temperature of the solar cell by using a temperature sensor arranged on the surface of the solar cell , n is the number of temperature sensors, calculate the maximum temperature of the solar cell array , and record the location where the highest temperature occurs ; S2: Compare the maximum temperature of the solar array and the maximum temperature threshold set The relative size of , enter S3, otherwise enter S4; S3: The driving mechanism starts, and the pull rope connected to the heat dissipation mechanism is reeled in, moving the heat dissipation mechanism to ; S4: The solar radiation sensor arranged on the surface of the solar cell obtains the solar radiation received by the solar cell , m is the number of solar radiation sensors, and calculates the strongest solar radiation received by the solar cell array , and record the location where the highest temperature occurs , enter S5; S5: Comparison of the strongest radiation received by the solar array and the set solar radiation threshold The relative size of , enter S6, otherwise return to S1; S6: The drive assembly starts, and the pull rope connected to the heat dissipation mechanism is reeled in, moving the heat dissipation mechanism to .

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