A compact intelligent heating system for a greenhouse

Abstract

The present application relates to the technical fields of agricultural greenhouse heating, and discloses a compact intelligent heating system for greenhouse, comprising an outdoor energy collection end, an indoor energy storage and heat transfer end, and a temperature control execution and control end. The present application uses flexible monocrystalline silicon photovoltaic panels with small aluminum alloy supports, which are installed on the top edge or side of the greenhouse to avoid blocking the plastic film and ensure sufficient light for crops. With solar energy as the core energy, the system integrates photothermal and photovoltaic collection, phase change heat storage, and lithium battery storage, efficiently converts and stores energy, reduces dependence on traditional energy, and has low operating costs and no pollution. The temperature sensor monitors the greenhouse temperature in real time, and the intelligent temperature control host automatically switches between three heating modes to maintain stable greenhouse temperature throughout the day, avoiding fluctuations that affect crop growth. The system integrates energy collection, heat storage, temperature control execution, and control functions, and has a compact component layout that does not occupy planting space, making it suitable for small-area greenhouses and easy to install and maintain.

Description

Technical Field

[0001] This invention relates to the field of agricultural greenhouse heating technology, and in particular to a compact intelligent heating system for greenhouses. Background Technology

[0002] A greenhouse, also known as a hothouse, is a facility that allows light and heat to pass through, and is used to cultivate plants. During seasons unsuitable for plant growth, it provides a suitable growing season and increases yield. It is primarily used for cultivating or raising seedlings of warm-weather-loving vegetables, flowers, and trees during cold seasons. Greenhouses come in many types, categorized by their roof frame materials, lighting materials, shape, and heating conditions. As an important facility in modern agricultural production, the internal temperature environment of a greenhouse directly affects the growth cycle, yield, and quality of crops. Traditional greenhouse heating methods suffer from significant energy consumption and pollution problems. Coal-fired and gas-fired heating not only have high operating costs but also produce exhaust gases that pollute the environment, which is inconsistent with the concept of green agriculture development. The utilization of solar energy is unreasonable. Existing solar heating systems mostly use large-area rigid photovoltaic panels, which easily block the greenhouse plastic film after installation, resulting in insufficient sunlight for crops inside the greenhouse and affecting photosynthesis. The system integration is low, with heat storage devices and power storage systems often set up separately, occupying valuable planting space inside the greenhouse and being cumbersome to install. Temperature control stability is poor, relying mostly on manual start-stop control, and cannot automatically switch energy supply according to changes in greenhouse temperature, which can easily lead to excessive temperature fluctuations or heating interruptions, making it difficult to meet the temperature stability requirements for crop growth. Therefore, there is a particular need for a compact intelligent heating system for greenhouses. Summary of the Invention

[0003] The purpose of this invention is to provide a compact intelligent heating system for greenhouses to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a compact intelligent heating system for greenhouses, comprising an outdoor energy acquisition end for collecting solar energy and converting it into electrical and thermal energy; an indoor energy storage and heat transfer end for storing thermal and electrical energy; and a temperature control execution and control end for monitoring the temperature inside the greenhouse and controlling automatic heating; the outdoor energy acquisition end, the indoor energy storage and heat transfer end, and the temperature control execution and control end are interconnected via circuits and a heat transfer structure.

[0005] Preferably, the outdoor energy collection terminal includes a flexible monocrystalline silicon photovoltaic panel and a small aluminum alloy bracket; the flexible monocrystalline silicon photovoltaic panel has a power of 300W / panel, a conversion efficiency of not less than 24%, and 4 to 6 panels are configured according to the available space outside the greenhouse, with a total power of 1200W to 1800W; the small aluminum alloy bracket is used to fix the flexible monocrystalline silicon photovoltaic panel to the top edge or upper side of the greenhouse without obstructing the greenhouse plastic film.

[0006] Preferably, the indoor energy storage and heat transfer end includes an integrated photothermal absorption and heat transfer module, a heat storage medium layer, a thermal energy storage plate, and a lithium iron phosphate battery pack. The integrated photothermal absorption and heat transfer module is installed on the sun-facing wall indoors and consists of a photothermal absorption plate with a black coating and aluminum heat transfer ribs, with the aluminum heat transfer ribs closely attached to the heat storage medium layer. The heat storage medium layer uses paraffin-based phase change heat storage material, with a single piece size of 1.2m × 0.8m and a heat storage capacity of not less than 450kJ / ㎡, and 8 to 10 pieces are laid according to the wall area. The thermal energy storage plate is a high-density ceramic heat storage plate, stacked behind the heat storage medium layer. The lithium iron phosphate battery pack has a capacity of 5kWh and a cycle life of not less than 3000 cycles.

[0007] Preferably, the temperature control execution and control terminal includes a graphene heat sink, a temperature sensor, and an intelligent temperature control host; one graphene heat sink is configured for every 25㎡ of greenhouse, with a single unit power of 500W and a heat conversion rate of not less than 95%, and is evenly installed in the middle of the greenhouse; four temperature sensors are installed in different areas of the greenhouse, with a measurement range of -10℃ to 50℃ and an accuracy of ±0.5℃; the intelligent temperature control host supports remote control via APP, can preset the start-up temperature, and can realize automatic switching between heat storage and release, lithium battery power supply, and domestic power supply.

[0008] Preferably, it also includes a charge-discharge controller, which is electrically connected to the flexible monocrystalline silicon photovoltaic panel at the outdoor energy collection end and the lithium iron phosphate battery pack at the indoor energy storage and heat transfer end, respectively, to guide the excess electrical energy generated by the flexible monocrystalline silicon photovoltaic panel into the lithium iron phosphate battery pack for storage, while preventing the lithium iron phosphate battery pack from being overcharged or over-discharged.

[0009] Preferably, the system has a daytime energy storage mode. In the daytime energy storage mode, the flexible monocrystalline silicon photovoltaic panel absorbs light energy, and part of the light energy is converted into heat energy and transferred to the indoor photothermal absorption panel. Then, it is introduced into the heat storage medium layer and the thermal energy storage plate through the aluminum heat transfer fins. When the heat storage medium layer and the thermal energy storage plate reach the saturated heat storage state, the excess electrical energy is stored in the lithium iron phosphate battery pack through the charge and discharge controller.

[0010] Preferably, the system has a night heating mode. In the night heating mode, when the temperature sensor detects that the temperature inside the greenhouse is lower than the preset start temperature of the intelligent temperature control host, the intelligent temperature control host first controls the thermal energy storage plate to release heat, and at the same time starts the graphene radiator to diffuse the heat into the greenhouse. If the heat released by the thermal energy storage plate is insufficient to maintain the temperature inside the greenhouse, the intelligent temperature control host automatically switches to the lithium iron phosphate battery pack for power supply, driving the graphene radiator to continue heating.

[0011] Preferably, the system has a cloudy emergency mode. In the cloudy emergency mode, when the power generation of the flexible monocrystalline silicon photovoltaic panel is insufficient and the lithium iron phosphate battery pack has a charge of less than 20%, the intelligent temperature control host immediately switches to domestic power supply to provide power to the graphene radiator and ensure that heating is not interrupted.

[0012] Preferably, the intelligent temperature control host is connected to the temperature sensor, graphene heat sink, and lithium iron phosphate battery pack wirelessly or via wired means. It can receive temperature data from the temperature sensor in real time and control the start / stop of the graphene heat sink and the switching of power sources based on the temperature data. The APP remote control function includes viewing the real-time temperature, modifying the preset start-up temperature, viewing the lithium iron phosphate battery pack power, and controlling the start / stop of the graphene heat sink.

[0013] Preferably, the number of aluminum heat transfer ribs matches the number of heat storage medium layers, and the aluminum heat transfer ribs are evenly distributed between the photothermal absorption plate and the heat storage medium layers, increasing the heat conduction area between the photothermal absorption plate and the heat storage medium layers and improving heat transfer efficiency; the number of high-density ceramic heat storage plates is the same as the number of heat storage medium layers, and the size of each high-density ceramic heat storage plate is the same as the size of the corresponding heat storage medium layer.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention uses flexible monocrystalline silicon photovoltaic panels with small aluminum alloy brackets, which are installed on the top edge or upper side of the greenhouse. The structural design avoids shading the greenhouse plastic film, ensuring that the crops inside the greenhouse receive sufficient light without any light obstruction. 2. This invention uses solar energy as the core energy source. Through the coordinated collection of solar thermal and photovoltaic energy, the integrated design of phase change thermal storage and lithium battery energy storage, it achieves efficient conversion and storage of solar energy, significantly reducing dependence on coal, gas and domestic electricity. It has low operating costs and no pollutant emissions, which meets the requirements of green agricultural development. 3. This invention monitors the temperature inside the greenhouse in real time through a temperature sensor. The intelligent temperature control host automatically switches between three modes: heat storage and release, lithium battery power supply, and domestic power supply. Whether it is daytime, nighttime, or cloudy, the temperature inside the greenhouse can be maintained within the set range, avoiding temperature fluctuations from affecting crop growth. Its stability is significantly better than that of traditional heating systems. 4. This invention integrates outdoor energy harvesting, indoor thermal energy storage, temperature control and execution functions into one unit. The components are compactly arranged. In particular, the indoor energy storage and heat transfer modules are installed using wall space, without occupying the planting area inside the greenhouse. It is suitable for the space requirements of small greenhouses and is easy to install and maintain. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the energy harvesting and storage of the present invention; Figure 2 This is a schematic diagram of the intelligent temperature control and energy switching of the present invention. Detailed Implementation

[0016] Unless the context clearly indicates otherwise, nouns without quantifiers and nouns modified by "the" include singular and plural indicators of persons / kinds.

[0017] As used in the specification and claims, the terms “comprising,” “including,” “having,” “may,” “containing,” and variations thereof are open transitional phrases, terms, or words that require the presence of a specified ingredient / step and allow the presence of other ingredients / steps. However, such a description should be interpreted as also describing the composition or method as consisting of the ingredients / steps listed “by” and “substantially by,” which allows only the specified ingredient / step and any unavoidable impurities that may arise therefrom to be present, and excludes other ingredients / steps.

[0018] The numerical values ​​in the specification and claims of this application should be understood to include the same numerical values ​​when reduced to the same number of significant figures and numerical values ​​that differ from the stated values ​​by less than the experimental error of conventional measurement techniques used to determine the stated values ​​of the type described in this application.

[0019] All ranges disclosed herein include the endpoints referred to and can be combined independently (e.g., the range “2 g to 10 g” includes the endpoints 2 g and 10 g, as well as all intermediate values).

[0020] The terms “about” and “approximately” can be used to include any numerical value that may vary without altering its fundamental function. When used with a range, “about” and “approximately” also disclose a range defined by the absolute values ​​of its two endpoints; for example, “about 2 to about 4” also discloses a range of “2 to 4”. Typically, the terms “about” and “approximately” can refer to ±10% of the indicated number. However, for temperature, the term “approximately” refers to ±1°C.

[0021] Unless otherwise expressly stated, the percentage of elements shall be considered as the weight percentage of the alloy.

[0022] This disclosure may relate to temperatures for certain method steps. It should be noted that these parameters generally refer to the temperature set by the heat source (such as a furnace), and not necessarily the temperature that the heated material must reach.

[0023] Example 1 Please see Figures 1-2 The present invention provides a technical solution: a compact intelligent heating system for greenhouses, characterized in that it includes an outdoor energy acquisition end, an indoor energy storage and heat transfer end, and a temperature control execution and control end. Each component is connected in linkage with the heat transfer structure through circuits to form a complete closed loop of energy acquisition, storage and heating.

[0024] The outdoor energy collection unit is used to collect solar energy and simultaneously convert it into electrical and thermal energy. It includes flexible monocrystalline silicon photovoltaic panels and small aluminum alloy brackets. The flexible monocrystalline silicon photovoltaic panels adopt a high conversion efficiency design, with a single panel power of 300W and a conversion efficiency of no less than 24%. Depending on the available space outside the greenhouse, 4 to 6 panels can be flexibly configured, with a total power of 1200W to 1800W, ensuring sufficient energy collection capacity. The small aluminum alloy brackets are lightweight and high-strength, and are used to fix the flexible monocrystalline silicon photovoltaic panels to the top edge or upper side of the greenhouse. After installation, they do not block the greenhouse plastic film, ensuring that the crops inside the greenhouse receive sufficient sunlight.

[0025] The indoor energy storage and heat transfer unit is used for efficient storage of thermal and electrical energy, including an integrated solar thermal absorption and heat transfer module, a heat storage medium layer, a thermal energy storage plate, and a lithium iron phosphate battery pack. The integrated solar thermal absorption and heat transfer module is installed on the sun-facing indoor wall and consists of a solar thermal absorption plate with a black coating and aluminum heat transfer fins. The black coating significantly improves solar energy absorption, and the aluminum heat transfer fins are positioned close to the heat storage medium layer for rapid heat conduction. The heat storage medium layer uses a paraffin-based phase change thermal storage material, which features large heat storage capacity and a suitable phase change temperature. The single-piece size is designed to be 1.2m × [missing information - likely a unit size]. With a depth of 0.8m and a heat storage capacity of no less than 450kJ / ㎡, 8-10 panels can be laid according to the indoor wall area to quickly absorb and store solar and thermal energy. The thermal energy storage panel uses high-density ceramic heat storage panels, which are stacked behind the heat storage medium layer. The excellent heat storage performance of high-density ceramic materials is utilized to further enhance heat retention and ensure continuous and stable heat release at night. The lithium iron phosphate battery pack is equipped with a capacity of 5kWh and a cycle life of no less than 3000 times. It has the advantages of high safety performance and stable charge and discharge efficiency. It is used to store the excess electricity generated by the photovoltaic panel and provide power support for nighttime or emergency heating.

[0026] The temperature control execution and control unit is used to realize real-time monitoring and automatic heating control of the temperature inside the greenhouse. It includes graphene radiators, temperature sensors, and an intelligent temperature control host. The graphene radiators are characterized by high heat conversion rate and rapid heating. Each unit has a power of 500W and a heat conversion rate of not less than 95%. According to the standard of one unit per 25㎡ of greenhouse, they are evenly installed in the central area of ​​the greenhouse to ensure uniform temperature distribution. Four temperature sensors are installed in different areas of the greenhouse, with a measurement range covering -10℃ to 50℃ and a measurement accuracy of ±0.5℃. They can comprehensively and accurately collect temperature data of various areas inside the greenhouse and provide real-time feedback. The intelligent temperature control host is the core of the system control and supports remote control via APP. Users can conveniently set the start temperature and check the operating status through their mobile terminals. Its core function is to realize the automatic switching between three modes: heat storage and release, lithium battery power supply, and domestic power supply, without manual intervention.

[0027] The charge and discharge controller is electrically connected to the flexible monocrystalline silicon photovoltaic panel at the outdoor energy collection end and the lithium iron phosphate battery pack at the indoor energy storage and heat transfer end. Its functions are: first, to stably guide the excess electrical energy generated by the flexible monocrystalline silicon photovoltaic panel into the lithium iron phosphate battery pack for storage; and second, to have overcharge and over-discharge protection functions, which can monitor the battery pack voltage status in real time, stop charging when the voltage reaches the preset upper limit, and stop discharging when it reaches the preset lower limit, effectively extending the service life of the lithium battery pack.

[0028] This system uses the logic control of an intelligent temperature control host to automatically switch between three working modes. The specific workflow is as follows: Daytime energy storage mode: When there is sufficient sunlight during the day, the flexible monocrystalline silicon photovoltaic panel absorbs light energy, and part of the light energy is converted into heat energy. This heat energy is transferred to the aluminum heat transfer fins through the photothermal absorption plate, and then quickly introduced into the heat storage medium layer and the thermal energy storage plate for storage. When the heat storage medium layer and the thermal energy storage plate reach the saturated heat storage state, the excess electrical energy generated by the photovoltaic panel is stored in the lithium iron phosphate battery pack through the charge and discharge controller, realizing the efficient collection and storage of energy. Nighttime heating mode: When the temperature inside the greenhouse drops at night, and the temperature sensor detects that the temperature inside the greenhouse is lower than the preset start-up temperature of the intelligent temperature control host, the intelligent temperature control host first controls the thermal energy storage plate to release the stored heat, and at the same time starts the graphene radiator to evenly diffuse the heat into the greenhouse; if the heat released by the thermal energy storage plate is not enough to maintain the set temperature inside the greenhouse, the intelligent temperature control host automatically switches to the lithium iron phosphate battery pack power supply mode to drive the graphene radiator to continue heating and ensure a stable temperature inside the greenhouse at night; Cloudy Emergency Mode: When there is insufficient sunlight on cloudy days, the power generation of flexible monocrystalline silicon photovoltaic panels decreases. When the lithium iron phosphate battery pack's charge level drops below the 20% threshold, the intelligent temperature control host immediately switches to the domestic power supply mode to provide stable power to the graphene radiator, ensuring uninterrupted heating and preventing crop growth from being affected by insufficient energy.

[0029] Example 2 System configuration suitable for 100㎡ greenhouse Outdoor energy collection terminal: Equipped with 4 flexible monocrystalline silicon photovoltaic panels of 300W each, with a total power of 1200W. They are fixed to the edge of the greenhouse top using small aluminum alloy brackets. The bracket installation angle is adjusted to 30°, the optimal tilt angle in the Northern Hemisphere, to ensure that the photovoltaic panels receive the maximum amount of sunlight. Indoor energy storage and heat transfer end: Install 8 1.2m×0.8m paraffin-based phase change heat storage medium plates, and correspondingly configure 8 high-density ceramic heat storage plates. The integrated light and heat absorption and heat transfer module is installed on the sunny wall of the south side of the greenhouse. The lithium iron phosphate battery pack is installed in the corner of the greenhouse in an area that does not affect planting. Temperature control execution and control end: 4 500W graphene heat sinks are configured and evenly installed in the middle of the greenhouse. 4 temperature sensors are installed in the four corners of the greenhouse. The preset start temperature of the intelligent temperature control host is 12℃. The charge / discharge controller is selected from models that match the photovoltaic panels and lithium battery packs, with a rated voltage of 48V, and features overcharge, over-discharge, overcurrent, and short-circuit protection functions.

[0030] In this embodiment, the system collects solar energy during the day through four photovoltaic panels, and stores the heat in the heat storage medium layer and the thermal energy storage plate through the photothermal absorption and heat transfer module. Excess electrical energy is stored in the lithium battery pack. At night, when the temperature inside the shed is below 12°C, the thermal energy storage plate releases heat to provide heating. The remaining heat is supplied by the lithium battery pack to drive the radiator, ensuring that the temperature inside the shed is maintained above 12°C. On cloudy days, when the lithium battery charge is below 20%, the system automatically switches to domestic power supply to ensure continuous heating.

[0031] Example 3 System configuration suitable for 150㎡ greenhouse Outdoor energy collection terminal: Equipped with 6 flexible monocrystalline silicon photovoltaic panels of 300W each, with a total power of 1800W, which are fixed to the upper side of the greenhouse by small aluminum alloy brackets to avoid obstructing the top plastic film; Indoor energy storage and heat transfer end: Install 10 1.2m×0.8m paraffin-based phase change heat storage medium plates, and configure 10 high-density ceramic heat storage plates accordingly. The lithium iron phosphate battery pack still has a capacity of 5kWh to meet the needs of larger area heat storage and energy storage. Temperature control execution and control end: Equipped with 6 500W graphene heat sinks, 4 temperature sensors are evenly distributed in the greenhouse, and the intelligent temperature control host is preset to start at 10℃. The parameters of the charge / discharge controller are matched with the total power of the photovoltaic panel and the capacity of the lithium battery pack to ensure stable power conversion and storage.

[0032] In this embodiment, the system can meet the heating needs of a 150㎡ greenhouse, automatically switch between three working modes to ensure stable temperature inside the greenhouse under different weather conditions, and does not occupy effective planting space. The installation of photovoltaic panels does not affect crop sunlight.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A compact intelligent heating system for greenhouses, characterized in that, include Outdoor energy collection terminal, used to collect solar energy and convert it into electrical and thermal energy; Indoor energy storage and heat transfer terminal, used to store thermal and electrical energy; Temperature control execution and control terminal, used to realize temperature monitoring and automatic heating control in the greenhouse; The outdoor energy acquisition end, the indoor energy storage and heat transfer end, and the temperature control execution and control end are connected in conjunction with the heat transfer structure through circuits.

2. The compact intelligent heating system for greenhouses according to claim 1, characterized in that: The outdoor energy collection terminal includes flexible monocrystalline silicon photovoltaic panels and small aluminum alloy brackets; the power of the flexible monocrystalline silicon photovoltaic panels is 300W / panel, the conversion efficiency is not less than 24%, and 4 to 6 panels are configured according to the available space outside the greenhouse, with a total power of 1200W to 1800W; the small aluminum alloy brackets are used to fix the flexible monocrystalline silicon photovoltaic panels to the top edge or upper side of the greenhouse without obstructing the greenhouse plastic film.

3. The compact intelligent heating system for greenhouses according to claim 1, characterized in that: The indoor energy storage and heat transfer end includes an integrated photothermal absorption and heat transfer module, a heat storage medium layer, a thermal energy storage plate, and a lithium iron phosphate battery pack. The integrated photothermal absorption and heat transfer module is installed on the sun-facing wall indoors and consists of a photothermal absorption plate with a black coating and aluminum heat transfer ribs, with the aluminum heat transfer ribs closely attached to the heat storage medium layer. The heat storage medium layer uses paraffin-based phase change heat storage material, with a single piece size of 1.2m × 0.8m and a heat storage capacity of not less than 450kJ / ㎡. Eight to ten pieces are laid according to the wall area. The thermal energy storage plate is a high-density ceramic heat storage plate, stacked behind the heat storage medium layer. The lithium iron phosphate battery pack has a capacity of 5kWh and a cycle life of not less than 3000 cycles.

4. The compact intelligent heating system for greenhouses according to claim 1, characterized in that: The temperature control execution and control terminal includes a graphene heat sink, a temperature sensor, and an intelligent temperature control host. One graphene heat sink is configured for every 25 square meters of greenhouse, with a single unit power of 500W and a heat conversion rate of not less than 95%, and is evenly installed in the middle of the greenhouse. Four temperature sensors are installed in different areas of the greenhouse, with a measurement range of -10℃ to 50℃ and an accuracy of ±0.5℃. The intelligent temperature control host supports remote control via APP, can preset the start-up temperature, and can realize automatic switching between heat storage and release, lithium battery power supply, and domestic power supply.

5. The compact intelligent heating system for greenhouses according to claim 1, characterized in that: It also includes a charge and discharge controller, which is electrically connected to the flexible monocrystalline silicon photovoltaic panel at the outdoor energy collection end and the lithium iron phosphate battery pack at the indoor energy storage and heat transfer end, respectively. The charge and discharge controller is used to import the excess electrical energy generated by the flexible monocrystalline silicon photovoltaic panel into the lithium iron phosphate battery pack for storage, while preventing the lithium iron phosphate battery pack from being overcharged and over-discharged.

6. The compact intelligent heating system for greenhouses according to claim 1, characterized in that: The system features a daytime energy storage mode. In this mode, the flexible monocrystalline silicon photovoltaic panel absorbs light energy, and a portion of the light energy is converted into heat energy and transferred to the indoor photothermal absorption panel. The heat is then introduced into the heat storage medium layer and the thermal energy storage plate via aluminum heat transfer fins. When the heat storage medium layer and the thermal energy storage plate reach saturated heat storage, the excess electrical energy is stored in the lithium iron phosphate battery pack through the charge and discharge controller.

7. A compact intelligent heating system for greenhouses according to claim 1, characterized in that: The system features a nighttime heating mode. In this mode, when the temperature sensor detects that the temperature inside the greenhouse is lower than the preset start-up temperature of the intelligent temperature control host, the host first controls the thermal energy storage plate to release heat, and simultaneously activates the graphene radiator to diffuse the heat into the greenhouse. If the heat released by the thermal energy storage plate is insufficient to maintain the temperature inside the greenhouse, the host automatically switches to power supply from the lithium iron phosphate battery pack to drive the graphene radiator for continuous heating.

8. The compact intelligent heating system for greenhouses according to claim 1, characterized in that: The system has a cloudy emergency mode. In the cloudy emergency mode, when the power generation of the flexible monocrystalline silicon photovoltaic panel is insufficient and the lithium iron phosphate battery pack has a charge of less than 20%, the intelligent temperature control host immediately switches to domestic power supply to provide power to the graphene radiator and ensure that heating is not interrupted.

9. A compact intelligent heating system for greenhouses according to claim 4, characterized in that: The intelligent temperature control host is connected to the temperature sensor, graphene heat sink, and lithium iron phosphate battery pack wirelessly or via wired connection. It can receive temperature data from the temperature sensor in real time and control the start / stop of the graphene heat sink and the switching of power sources based on the temperature data. The APP remote control function includes viewing the real-time temperature, modifying the preset start-up temperature, viewing the lithium iron phosphate battery pack power, and controlling the start / stop of the graphene heat sink.

10. A compact intelligent heating system for greenhouses according to claim 3, characterized in that: The number of aluminum heat transfer ribs matches the number of heat storage medium layers, and the aluminum heat transfer ribs are evenly distributed between the photothermal absorption plate and the heat storage medium layers, increasing the heat conduction area between the photothermal absorption plate and the heat storage medium layers and improving heat transfer efficiency; the number of high-density ceramic heat storage plates is the same as the number of heat storage medium layers, and the size of each high-density ceramic heat storage plate is the same as the size of the corresponding heat storage medium layer.

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