A solar energy-based power generation and heat collection system and method

Abstract

The present invention relates to the field of solar thermal collection technology, and discloses a solar-based power generation and thermal collection system and method, the system comprising: a photovoltaic power generation module, used to convert solar energy into electrical energy; a power storage module, used to store the electrical energy generated by the photovoltaic power generation module; a solar thermal collection module, used to convert solar energy into thermal energy and heat water; a heat conversion module, used to transfer the electrical energy of the power storage module to the solar thermal collection module, and assist the solar thermal collection module in heating water; a water storage module, used to store the hot water heated by the solar thermal collection module; an information collection module, used to collect the solar illumination intensity Ai of the photovoltaic power generation module and the solar thermal collection module and the temperature information Bi of the water storage module in real time; and a central control module, used to monitor and receive information from the information collection module in real time. The present invention realizes efficient utilization and dual conversion of solar energy through the conversion of electrical energy of the photovoltaic power generation module and thermal energy of the solar thermal collection module.

Description

Technical Field

[0001] The present invention relates to the technical field of solar energy heat collection technology, and in particular to a solar energy-based power generation and heat collection system and method. Background Art

[0002] With the continuous growth of global energy demand and the increasingly serious environmental problems, the development of renewable energy has become a top priority. As an inexhaustible clean energy, solar energy has huge development potential. Entering the 21st century, solar thermal technology has received more extensive attention and application around the world. With the increasing severity of global climate change, governments of various countries have introduced policies to support the development of renewable energy such as solar energy. At the same time, technological innovation is also constantly promoting the advancement of solar thermal technology.

[0003] Existing solar thermal collection systems generally collect heat through solar energy. When there is insufficient light, it is difficult for the collection system to collect heat stably. Although some collection systems use external power generation devices to assist in heat collection, there are still problems such as the need to improve the thermoelectric conversion efficiency, low efficiency in the use of solar energy, and insufficient reliability and adaptability of the collection system.

[0004] Therefore, it is necessary to develop a new type of solar energy-based thermal power generation system and method to overcome the shortcomings of the prior art. Summary of the invention

[0005] In view of this, the present invention proposes a solar energy-based power generation and heat collection system and method, aiming to improve the utilization rate of solar energy and the thermoelectric conversion efficiency, and enhance the reliability and adaptability of the heat collection system.

[0006] In one aspect, the present invention provides a solar-based power generation and heat collection system, comprising:

[0007] Photovoltaic modules, which convert solar energy into electricity;

[0008] A power storage module, used to store the electric energy generated by the photovoltaic power generation module;

[0009] Solar thermal collection modules for converting solar energy into thermal energy and heating water;

[0010] A water storage module, used to store hot water heated by the solar thermal collection module;

[0011] A heat conversion module is used to transfer the electric energy of the power storage module to the solar thermal collection module to assist the solar thermal collection module in heating water;

[0012] An information collection module is used to collect the sunlight intensity Ai of the photovoltaic power generation module and the solar thermal collection module and the temperature information Bi of the water storage module in real time;

[0013] Central control module, used for real-time monitoring and receiving information from information collection module;

[0014] The central control module controls the start and stop of the heat conversion module according to the light intensity of the solar thermal collection module and the preset working light intensity range of the solar thermal collection module; it also controls the start and stop of the heat conversion module according to the temperature of the water storage module and the preset working temperature range of the water storage module.

[0015] Furthermore, the central control module presets the working light intensity range Ki of the solar thermal collection module, i=1, 2, 3, K3>K2>K1; the heat conversion module presets the first current level P1, the second current level P2, and the third current level P3, P3>P2>P1=0;

[0016] The central control module controls the start and stop of the heat conversion module according to the light intensity of the solar heat collection module and the preset working light intensity of the solar heat collection module, including:

[0017] If Ai≤K1, the heat conversion module is controlled to start, and the process of assisting the solar thermal collection module to heat water is performed;

[0018] If Ai≥K3, the heat conversion module is controlled to stop.

[0019] Furthermore, the central control module controls the start and stop of the heat conversion module according to the light intensity of the solar heat collection module and the preset working light intensity of the solar heat collection module, including:

[0020] If the light intensity of the solar thermal collection module is within the preset working solar intensity range of the solar thermal collection module, adjusting the current of the heat conversion module;

[0021] If K2≥Ai>K1, the central control module controls the current of the heat conversion module to increase by 2 levels, and the maximum does not exceed P3;

[0022] If K3>Ai>K2, the central control module controls the current of the heat conversion module to reduce by 1 level, and the minimum is not lower than P1.

[0023] Furthermore, the central control module also presets the working temperature range of the water storage module T i, i=1, 2, 3, T3>T2>T1;

[0024] The central control module controls the start and stop of the heat conversion module according to the temperature of the water storage module and the preset working temperature range of the water storage module, including:

[0025] If Bi≤T1, the heat conversion module is controlled to start, and the process of assisting the solar thermal collection module to heat water is performed;

[0026] If Bi≥T3, the heat conversion module is controlled to stop.

[0027] Furthermore, the central control module controls the start and stop of the heat conversion module according to the temperature of the heat storage module and the preset operating temperature range of the heat storage module, including:

[0028] If the temperature of the water storage module is within a preset operating temperature range of the water storage module, adjusting the current of the heat conversion module;

[0029] If T2≥B i>T1, the central control module controls the current of the heat conversion module to increase by 2 levels, and the maximum does not exceed P3;

[0030] If T3>Bi>T2, the central control module controls the current of the heat conversion module to decrease by one level, and the minimum is not less than P1.

[0031] Furthermore, the central control module is also used to control and adjust the azimuth and pitch angles of the photovoltaic power generation module and the solar thermal collection module according to the light intensity information collected by the light collection module.

[0032] Furthermore, the central control module also includes a pressure sensor and a display;

[0033] The pressure sensor is used to monitor the pressure changes of the system in real time;

[0034] The display is used to display the operating status of the heat collection power generation system and the parameters of each module in real time.

[0035] Furthermore, a maximum temperature threshold and a minimum temperature threshold are set in the central control module;

[0036] The central control module issues a high temperature alarm when the temperature of the water storage module is greater than the maximum temperature threshold;

[0037] The central control module issues a low temperature alarm when the temperature of the water storage module is lower than the minimum temperature threshold.

[0038] On the other hand, the present invention also proposes a method of a solar energy-based power generation and heat collection system, comprising:

[0039] Real-time monitoring of the light intensity of the photovoltaic power generation module and the solar thermal collection module and the temperature information of the water storage module collected by the information collection module;

[0040] Controlling the start and stop of the heat conversion module according to the light intensity of the solar heat collection module and the preset working light intensity range of the solar heat collection module;

[0041] The start and stop of the heat conversion module is also controlled according to the temperature of the water storage module and the preset working temperature range of the water storage module;

[0042] Wherein, the solar thermal collection module converts solar energy into thermal energy and heats water;

[0043] The photovoltaic power generation module converts solar energy into electrical energy;

[0044] The electric energy generated by the photovoltaic power generation module is stored in the power storage module;

[0045] The heat conversion module transfers the electric energy of the power storage module to the solar thermal collection module to assist the solar thermal collection module in heating water;

[0046] The water storage module is used to store hot water heated by the solar thermal collection module.

[0047] Compared with the prior art, the present invention has the following beneficial effects:

[0048] The present invention converts solar energy into electrical energy through a photovoltaic power generation module, and converts solar energy into thermal energy and heats water through a solar thermal collection module, thereby making full use of solar energy resources and realizing efficient utilization and dual conversion of solar energy. The central control system controls the operating status of each module of the thermal collection system according to the information collected by the information collection module. When the sunlight is insufficient, the central control system automatically switches to the electric auxiliary heating mode, and transmits the electrical energy generated by the photovoltaic power generation module to the solar thermal collection module for auxiliary heating through the heat conversion module, thereby ensuring the stable operation of the solar thermal collection module and improving the reliability and adaptability of the thermal collection system. In addition, the present invention reduces dependence on external electricity, helps save energy costs, reduces carbon emissions, has a positive effect on environmental protection, and also has good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0050] Figure 1 A functional block diagram of a solar-based power generation and heat collection system provided in an embodiment of the present invention;

[0051] Figure 2 A flow chart of a method for a solar-based power generation and heat collection system provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0052] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described 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.

[0053] With the continuous growth of global energy demand and the increasingly serious environmental problems, the development of renewable energy has become a top priority. As an inexhaustible clean energy, solar energy has huge development potential. Entering the 21st century, solar thermal technology has received more extensive attention and application around the world. With the increasing severity of global climate change, governments of various countries have introduced policies to support the development of renewable energy such as solar energy. At the same time, technological innovation is also constantly promoting the advancement of solar thermal technology.

[0054] Existing solar thermal collection systems generally collect heat through solar energy. When there is insufficient light, it is difficult for the collection system to collect heat stably. Although some collection systems use external power generation devices to assist in heat collection, there are still problems such as the need to improve the thermoelectric conversion efficiency, low efficiency in the use of solar energy, and insufficient reliability and adaptability of the collection system.

[0055] Therefore, it is necessary to design a solar-based power generation and heat collection system and method to improve the utilization rate of solar energy and the thermoelectric conversion efficiency, and enhance the reliability and adaptability of the heat collection system.

[0056] Reference Figure 1 In some embodiments of the present application, a solar energy-based power generation and heat collection system includes: a photovoltaic power generation module, a power storage module, a solar heat collection module, a water storage module, a heat conversion module, an information collection module and a central control module.

[0057] Specifically, photovoltaic power generation modules convert solar energy into electrical energy. Photovoltaic power generation modules are solar panels that absorb solar radiation and convert it into electrical energy. The side of the solar panel that absorbs solar radiation energy faces the sun, so that it can fully receive solar radiation energy and thus increase power generation.

[0058] Specifically, the power storage module stores the electric energy generated by the photovoltaic power generation module. The power storage module stores the current generated by the photovoltaic power generation module through a circuit. Usually, the current is direct current. The power storage module can be a lithium-ion battery, a nickel-cadmium battery or a capacitor.

[0059] It is understandable that a battery pack is formed by connecting several batteries in parallel, thereby increasing the amount of stored electricity.

[0060] Specifically, the solar thermal module converts solar energy into thermal energy and heats water. The solar thermal module uses a high-efficiency solar thermal collector, which generates thermal energy after absorbing solar radiation. The generated thermal energy can heat cold water. The water replenishment and water use of the solar thermal collector adopt existing technologies.

[0061] It is understandable that applying a high-absorption solar selective coating on the surface of a high-efficiency solar collector can improve the efficiency of the solar collector module in absorbing solar radiation.

[0062] Specifically, the water storage module stores hot water heated by the solar thermal collection module. The water storage module may be a water storage tank.

[0063] It is understandable that the water tank uses insulation materials to reduce the loss of heat energy.

[0064] Specifically, the heat conversion module transfers the electric energy of the power storage module to the solar thermal collection module, and assists the solar thermal collection module in heating water.

[0065] Specifically, when the light intensity is insufficient and the heat energy converted by the solar thermal collection module through absorbing solar radiation is insufficient to meet the requirements of heating water, the heat conversion module can transfer the electrical energy in the power storage module to the solar thermal collection module to assist the solar thermal collection module in heating water.

[0066] Specifically, the information collection module can collect the sunlight intensity Ai of the photovoltaic power generation module and the solar thermal collection module and the temperature information Bi of the water storage module in real time.

[0067] Specifically, the central control module can monitor and receive the information collected by the information collection module in real time.

[0068] Specifically, the central control module controls the start and stop of the heat conversion module according to the light intensity of the solar thermal collection module and the preset working light intensity range of the solar thermal collection module; it also controls the start and stop of the heat conversion module according to the temperature of the water storage module and the preset working temperature range of the water storage module.

[0069] It can be understood that the central control module monitors the temperature changes of the water storage module, controls and adjusts the operating status of the heat conversion module, so that the water storage module is in the optimal temperature range for stable heating. By monitoring the changes in light intensity of the solar thermal collection module, when the sunlight is insufficient, the central control system automatically switches to the electric auxiliary heating mode, and controls the heat conversion module to transfer the electric energy generated by the photovoltaic power generation module to the solar thermal collection module for auxiliary heating, ensuring that the solar thermal collection module can operate stably under different light intensities, thereby improving the reliability and adaptability of the thermal collection system.

[0070] It can be seen that the central control module can automatically adjust the working status of each module of the heat collection system according to the changes in light intensity and the temperature of the water storage module, which improves the heat collection efficiency and solar energy utilization of the heat collection system. It also reduces the dependence on external electricity, helps save energy costs, reduces carbon emissions, has a positive effect on environmental protection, and has good economic benefits.

[0071] In some embodiments of the present application, the working light intensity range Ki of the solar thermal collection module is preset in the central control module, i=1,2,3, K3>K2>K1; the first current level P1, the second current level P2, and the third current level P3 are preset in the heat conversion module, P3>P2>P1=0.

[0072] Specifically, K2 is the median of the preset working light intensity range of the solar thermal collector module.

[0073] Specifically, the preset current level in the heat conversion module is the auxiliary level of electric energy to the solar thermal collection module. The higher the current level, the stronger the effectiveness of electric energy in assisting the solar thermal collection module to heat water. The lower the current level, the weaker the effectiveness of electric energy in assisting the solar thermal collection module to heat water.

[0074] Specifically, the central control module controls the start and stop of the heat conversion module according to the light intensity of the solar thermal collection module and the preset working light intensity of the solar thermal collection module, including: if Ai≤K1, controlling the heat conversion module to start and assisting the solar thermal collection module in heating water; if Ai≥K3, controlling the heat conversion module to stop.

[0075] Specifically, the preset working light intensity range of the solar thermal collector module is the light intensity range in which the solar thermal collector module and the heat conversion module operate simultaneously. When the light intensity is lower than the preset working light intensity range, the solar thermal collector module cannot operate alone to meet the heat collection demand. At this time, it is necessary to control the start-up of the heat conversion module to transfer the electric energy of the power storage module to the solar thermal collector module, so as to realize the process of electric power assisting the solar thermal collector module to heat water. Conversely, when the light intensity of the solar thermal collector module exceeds the preset maximum light intensity, the solar thermal collector module can operate alone to meet the heat collection demand and ensure the stable operation of the solar thermal collector. At this time, the control module controls the heat conversion module to stop transferring electric energy.

[0076] It can be seen that the central control module automatically adjusts the operating state of the heat conversion module according to the preset working light intensity range of the solar thermal collection module, so that the solar thermal collection module can operate stably under different light intensities, thereby improving the utilization rate of solar energy and the efficiency of heat energy conversion, and realizing the dual conversion of solar energy.

[0077] In some embodiments of the present application, the central control module controls the start and stop of the heat conversion module according to the light intensity of the solar thermal collection module and the preset working light intensity of the solar thermal collection module, including: if the light intensity of the solar thermal collection module is within the preset working solar intensity range of the solar thermal collection module, adjusting the current of the heat conversion module.

[0078] Specifically, if K2≥Ai>K1, the central control module controls the current of the heat conversion module to increase by 2 levels, and the maximum does not exceed P3. When the sunlight intensity is less than the median of the preset working sunlight intensity, the current of the heat conversion module is increased to enhance the effectiveness of electric auxiliary heating to ensure the heat collection effect of the solar thermal collection module; if K3>Ai>K2, the central control module controls the current of the heat conversion module to decrease by 1 level, and the minimum is not less than P1. When the sunlight intensity is greater than the median of the preset working sunlight intensity, the current of the heat conversion module is reduced to reduce the effectiveness of electric auxiliary heating.

[0079] It is understandable that if the light intensity of the solar thermal module is within the preset working solar intensity range of the solar thermal module, the effectiveness of the electric energy-assisted solar thermal module in heating water can be adjusted by controlling the current of the heat conversion module, thereby helping to ensure the stable operation of the solar thermal module.

[0080] In some embodiments of the present application, the central control module also presets an operating temperature range Ti of the water storage module, where i=1, 2, 3, T3>T2>T1.

[0081] Specifically, T2 is the median of a preset operating temperature range of the water storage module.

[0082] Specifically, the central control module controls the start and stop of the heat conversion module according to the temperature of the water storage module and the preset working temperature range of the water storage module, including: if Bi≤T1, control the heat conversion module to start and assist the solar thermal collection module in heating water. When the temperature of the water storage module is lower than the preset minimum temperature, it means that the solar thermal collection module cannot operate alone to meet the heat collection demand. At this time, it is necessary to control the start of the heat conversion module to transfer the electric energy of the power storage module to the solar thermal collection module to realize the process of electric-assisted solar thermal collection module heating water. If Bi≥T3, control the heat conversion module to stop. When the temperature of the water storage module exceeds the preset maximum temperature, the solar thermal collection module can operate alone to meet the heat collection demand and ensure the stable operation of the solar thermal collector. At this time, the control module controls the heat conversion module to stop transferring electric energy.

[0083] It can be understood that the preset operating temperature range of the water storage module is the temperature range in which the solar energy collection module and the heat conversion module operate simultaneously, and is also the optimal heating temperature range of the water storage module.

[0084] It can be seen that the central control module automatically adjusts the operating state of the heat conversion module according to the preset operating temperature range of the water storage module, so that the water storage module is guaranteed to be in the optimal heating temperature range under different light intensities, thereby improving the utilization rate of solar energy, ensuring the stability and adaptability of the thermal collection system, and improving the storage efficiency and utilization rate of thermal energy.

[0085] In some embodiments of the present application, the central control module controls the start and stop of the heat conversion module according to the temperature of the heat storage module and the preset operating temperature range of the heat storage module, including: if the temperature of the water storage module is within the preset operating temperature range of the water storage module, adjusting the current of the heat conversion module.

[0087] Specifically, if T2≥Bi>T1, the central control module controls the current of the heat conversion module to increase by 2 levels, and the maximum does not exceed P3. When the temperature of the water storage module is lower than the median of the preset working temperature range, the current of the heat conversion module is increased to enhance the effectiveness of the electric auxiliary heating to ensure the heat collection effect of the solar energy collection module. If T3>Bi>T2, the central control module controls the current of the heat conversion module to decrease by 1 level, and the minimum does not fall below P1. When the temperature of the water storage module is higher than the median of the preset working temperature range, the current of the heat conversion module is reduced to reduce the effectiveness of the electric auxiliary heating.

[0088] It is understandable that if the temperature of the water storage module is within the preset operating temperature range of the water storage module, the effectiveness of the electric energy-assisted solar thermal module in heating water can be adjusted by controlling the current of the heat conversion module, which helps to ensure that the temperature of the water storage module is at the optimal heating temperature, thereby ensuring the stable operation of the solar thermal module.

[0089] In some embodiments of the present application, the central control module is also used to control and adjust the azimuth and pitch angles of the photovoltaic power generation module and the solar thermal collection module according to the light intensity information collected by the light collection module.

[0090] It can be understood that the central control module adjusts the azimuth and pitch angle of the photovoltaic power generation module and the solar thermal collection module in real time according to the light intensity information collected by the light collection module, so that the photovoltaic power generation module and the solar thermal collection module can better absorb solar radiation, thereby improving the utilization rate of solar energy.

[0091] In some embodiments of the present application, the central control module also includes a pressure sensor and a display.

[0092] Specifically, the pressure sensor is used to monitor the pressure changes of the system in real time;

[0093] Specifically, the display is used to display the operating status of the solar power generation system and the parameters of each module in real time.

[0094] In some embodiments of the present application, a maximum temperature threshold and a minimum temperature threshold are set in the central control module.

[0095] Specifically, when the temperature of the water storage module is greater than the maximum temperature threshold, the central control module issues a high temperature alarm, and at the same time the control module controls each module of the solar collection system to stop operating; when the temperature of the water storage module is lower than the minimum temperature threshold, the central control module issues a low temperature alarm.

[0096] It is understandable that the central control module automatically adjusts the working state of the thermal collection system according to the temperature changes of the water storage module to achieve efficient utilization and storage of thermal energy.

[0097] In another preferred embodiment based on the above embodiment, refer to Figure 2 As shown, this embodiment provides a method for a solar-based power generation and heat collection system, comprising:

[0098] Real-time monitoring of the light intensity of the photovoltaic power generation module and the solar thermal collection module and the temperature information of the water storage module collected by the information collection module;

[0099] Controlling the start and stop of the heat conversion module according to the light intensity of the solar heat collection module and the preset working light intensity range of the solar heat collection module;

[0100] The start and stop of the heat conversion module is also controlled according to the temperature of the water storage module and the preset working temperature range of the water storage module;

[0101] Wherein, the solar thermal collection module converts solar energy into thermal energy and heats water;

[0102] The photovoltaic power generation module converts solar energy into electrical energy;

[0103] The electric energy generated by the photovoltaic power generation module is stored in the power storage module;

[0104] The heat conversion module transfers the electric energy of the power storage module to the solar thermal collection module to assist the solar thermal collection module in heating water;

[0105] The water storage module is used to store hot water heated by the solar thermal collection module.

[0106] It can be understood that the above-mentioned method based on a solar thermal collection system has the same beneficial effects as a solar power generation and thermal collection system, which will not be described in detail here.

[0107] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0108] The present application is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0109] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0110] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A solar energy-based power generation and heat collection system, characterized in that: include: Photovoltaic modules, which convert solar energy into electricity; A power storage module, used to store the electric energy generated by the photovoltaic power generation module; Solar thermal collection modules for converting solar energy into thermal energy and heating water; A water storage module, used to store hot water heated by the solar thermal collection module; A heat conversion module is used to transfer the electric energy of the power storage module to the solar thermal collection module to assist the solar thermal collection module in heating water; An information collection module is used to collect the sunlight intensity Ai of the photovoltaic power generation module and the solar thermal collection module and the temperature information Bi of the water storage module in real time; Central control module, used for real-time monitoring and receiving information from information collection module; The central control module controls the start and stop of the heat conversion module according to the light intensity of the solar thermal collection module and the preset working light intensity range of the solar thermal collection module; it also controls the start and stop of the heat conversion module according to the temperature of the water storage module and the preset working temperature range of the water storage module.

2. A solar energy-based power generation and heat collection system according to claim 1, characterized in that: The central control module is preset with a working light intensity range Ki of the solar thermal collector module, i=1, 2, 3, K3>K2>K1; the heat conversion module is preset with a first current level P1, a second current level P2, and a third current level P3, P3>P2>P1=0; The central control module controls the start and stop of the heat conversion module according to the light intensity of the solar heat collection module and the preset working light intensity of the solar heat collection module, including: If Ai≤K1, the heat conversion module is controlled to start, and the process of assisting the solar thermal collection module to heat water is performed; If Ai≥K3, the heat conversion module is controlled to stop.

3. A solar energy-based power generation and heat collection system according to claim 2, characterized in that: The central control module controls the start and stop of the heat conversion module according to the light intensity of the solar heat collection module and the preset working light intensity of the solar heat collection module, including: If the light intensity of the solar thermal collection module is within the preset working solar intensity range of the solar thermal collection module, adjusting the current of the heat conversion module; If K2≥Ai>K1, the central control module controls the current of the heat conversion module to increase by 2 levels, and the maximum does not exceed P3; If K3>Ai>K2, the central control module controls the current of the heat conversion module to reduce by 1 level, and the minimum is not lower than P1.

4. A solar energy-based power generation and heat collection system according to claim 2, characterized in that: The central control module also presets the working temperature range Ti of the water storage module, i=1,2,3, T3>T2>T1; The central control module controls the start and stop of the heat conversion module according to the temperature of the water storage module and the preset working temperature range of the water storage module, including: If Bi≤T1, the heat conversion module is controlled to start, and the process of assisting the solar thermal collection module to heat water is performed; If Bi≥T3, the heat conversion module is controlled to stop.

5. A solar energy-based power generation and heat collection system according to claim 4, characterized in that: The central control module controls the start and stop of the heat conversion module according to the temperature of the heat storage module and the preset operating temperature range of the heat storage module, including: If the temperature of the water storage module is within a preset operating temperature range of the water storage module, adjusting the current of the heat conversion module; If T2≥Bi>T1, the central control module controls the current of the heat conversion module to increase by 2 levels, and the maximum does not exceed P3; If T3>Bi>T2, the central control module controls the current of the heat conversion module to reduce by 1 level, and the minimum is not lower than P1.

6. A solar-based power generation and heat collection system according to claim 1, characterized in that: The central control module is also used to control and adjust the azimuth and pitch angles of the photovoltaic power generation module and the solar thermal collection module according to the light intensity information collected by the light collection module.

7. A solar energy-based power generation and heat collection system according to claim 1, characterized in that: The central control module also includes a pressure sensor and a display; The pressure sensor is used to monitor the pressure changes of the system in real time; The display is used to display the operating status of the heat collection power generation system and the parameters of each module in real time.

8. The solar energy-based power generation and heat collection system according to claim 1, characterized in that: The central control module is provided with a maximum temperature threshold and a minimum temperature threshold; The central control module issues a high temperature alarm when the temperature of the water storage module is greater than the maximum temperature threshold; The central control module issues a low temperature alarm when the temperature of the water storage module is lower than the minimum temperature threshold.

9. A method for a solar energy-based power generation and heat collection system, characterized in that: include: Real-time monitoring of the light intensity of the photovoltaic power generation module and the solar thermal collection module and the temperature information of the water storage module collected by the information collection module; Controlling the start and stop of the heat conversion module according to the light intensity of the solar heat collection module and the preset working light intensity range of the solar heat collection module; The start and stop of the heat conversion module is also controlled according to the temperature of the water storage module and the preset working temperature range of the water storage module; Wherein, the solar thermal collection module converts solar energy into thermal energy and heats water; The photovoltaic power generation module converts solar energy into electrical energy; The electric energy generated by the photovoltaic power generation module is stored in the power storage module; The heat conversion module transfers the electric energy of the power storage module to the solar thermal collection module to assist the solar thermal collection module in heating water; The water storage module is used to store hot water heated by the solar thermal collection module.

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