Heat pump system based on photovoltaic photo-thermal, control method, equipment and storage medium

Abstract

The embodiment of the invention relates to the field of photo-thermal utilization, and discloses a heat pump system based on photovoltaic photo-thermal, a control method, equipment and a storage medium. The heat pump system comprises a photo-thermal evaporation assembly, a compressor and a condenser. The photo-thermal evaporation assembly comprises a main pipeline formed by a photovoltaic photo-thermal assembly and an evaporator which are sequentially connected in series, and a bypass pipeline communicated with the main pipeline. The controller is in control connection with the main pipeline and the bypass pipeline and used for controlling refrigerants to flow through the photovoltaic photo-thermal assembly and / or the evaporator in a switchable mode by adjusting the conduction state of the main pipeline and the conduction state of the bypass pipeline. According to the heat pump system and the control method provided by the invention, the technical problem of large heating value fluctuation caused by environmental influence is solved, and at least the purposes of flexibly utilizing the photovoltaic photo-thermal assembly to exchange heat with the evaporator and adapting to different environments can be achieved, so that heat energy is efficiently and stably provided for customers, and condensed water is prevented from being generated on the surface of the photovoltaic photo-thermal assembly.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of photothermal utilization technology, and in particular to a photovoltaic-based heat pump system, control method, device and storage medium. Background Art

[0002] There are key issues that need to be addressed during the use of photovoltaic power generation: In theory, the better the sunshine conditions, the stronger the sunlight, and the more radiation energy input into the photovoltaic panels, the more electricity the photovoltaic panels can generate. However, photovoltaic panels have the unfavorable phenomenon that their power generation efficiency decreases significantly as their own temperature rises. The better the sunshine conditions, the more significantly the operating temperature of the photovoltaic components will rise, thereby greatly reducing their power generation efficiency.

[0003] In the prior art, photovoltaic thermal modules are usually connected to heat pump circulation devices, and the evaporator, condenser and compressor in the heat pump circulation device are used to perform heat exchange treatment on the refrigerant, so as to continuously generate electricity and utilize heat energy. However, due to the influence of weather changes, the temperature of photovoltaic thermal modules will change significantly during the operation of the whole day and the whole year, which will lead to significant changes in the state of the refrigerant. In the prior art, it is usually only dependent on the evaporator in the heat pump circulation device for heat exchange treatment, which may cause large fluctuations in heat generation due to environmental influences, and may cause condensation water to form on the surface of the photovoltaic thermal module, thereby affecting the power generation efficiency and causing unstable operation. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to at least provide a heat pump system, control method, equipment and storage medium based on photovoltaic thermal energy, which can at least solve the technical problem of large fluctuations in heating value caused by environmental influences, and at least achieve the ability to flexibly utilize photovoltaic thermal components and evaporators for heat exchange, adapt to different environments, avoid condensation on the surface of photovoltaic thermal components, and achieve the effect of efficiently and stably providing heat energy to customers.

[0005] In order to solve the above technical problems, at least one embodiment of the present application provides a heat pump system based on photovoltaic thermal energy, comprising: a photovoltaic thermal evaporation component, a compressor and a condenser which are sequentially connected and arranged along the circulation direction of the built-in refrigerant; the photovoltaic thermal evaporation component comprises a main pipeline formed by photovoltaic thermal components and evaporators which are sequentially connected in series according to the flow method of the built-in refrigerant, and a bypass pipeline connected to the main pipeline;

[0006] A controller is control-connected to the main pipeline and the bypass pipeline, and is used to control the refrigerant to switchably flow through the photovoltaic thermal component and / or the evaporator by adjusting the conduction state of the main pipeline and the bypass pipeline, so as to change the flow path of the refrigerant in the photovoltaic thermal evaporation component.

[0007] At least one embodiment of the present application further provides a control method for a heat pump system, which is applicable to the aforementioned photovoltaic-thermal heat pump system, and the method comprises the following steps:

[0008] Obtaining current environmental information and the temperature of the photovoltaic thermal component;

[0009] The flow path of the refrigerant in the photovoltaic thermal evaporation component is controlled according to the current environmental information and the temperature of the photovoltaic thermal component; wherein the flow path of the refrigerant in the photovoltaic thermal evaporation component includes: the refrigerant flows through the photovoltaic thermal component and / or the evaporator.

[0010] At least one embodiment of the present application also provides an electronic device, comprising: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the above-mentioned control method of the heat pump system.

[0011] At least one embodiment of the present application further provides a computer-readable storage medium storing a computer program, wherein the computer program implements the above-mentioned control method of the heat pump system when executed by a processor.

[0012] The photovoltaic-thermal heat pump system, control method, device and storage medium provided by the embodiments of the present application are, compared with the prior art, a photovoltaic evaporation component is formed by combining a photovoltaic component and an evaporator, so that when the environment changes, the controller can be used to adjust the conduction state of the main pipeline and the bypass pipeline, and the refrigerant can be controlled to switchably flow through the photovoltaic component and / or the evaporator to change the flow path of the refrigerant in the photovoltaic evaporation component, so that the flow path of the refrigerant adapts to environmental changes, and the photovoltaic component and the evaporator can be flexibly used for heat exchange, and heat energy can be provided to customers efficiently and stably, and the heat generated by the photovoltaic component can be fully utilized to avoid the problem of condensation water on the surface of the photovoltaic component affecting its power generation efficiency; at the same time, the photovoltaic component and the evaporator are connected in series, and the heat exchange efficiency of the photovoltaic evaporation component can be adjusted by controlling the conduction state of the bypass pipeline and the main pipeline. The control method is simple, and it can ensure sufficient forward flow of the refrigerant, avoid backflow, and ensure stable heat output.

[0013] In addition, the bypass pipeline comprises:

[0014] A first bypass pipe connected in parallel to both ends of the photovoltaic thermal assembly, and a second bypass pipe connected in parallel to both ends of the evaporator;

[0015] The controller is used to control the first refrigerant inlet of the photovoltaic thermal component, the second refrigerant inlet of the evaporator, the first bypass pipe and the second bypass pipe. The conduction state controls the switchable flow of the refrigerant through the photovoltaic thermal component and / or the evaporator to change the flow path of the refrigerant in the photovoltaic thermal evaporation component.

[0016] In addition, the photothermal evaporation assembly further comprises:

[0017] A first control valve, installed at the first refrigerant inlet, for controlling the refrigerant flowing into the photovoltaic thermal assembly;

[0018] a second control valve, installed at the second refrigerant inlet, for controlling the refrigerant flowing into the evaporator;

[0019] a third control valve, installed on the first bypass pipeline, for controlling the refrigerant flowing through the first bypass pipeline;

[0020] a fourth control valve, installed on the second bypass pipeline, for controlling the refrigerant flowing through the second bypass pipeline;

[0021] The controller is used to control the conduction states of the first control valve, the second control valve, the third control valve and the fourth control valve to control the switchable flow of the refrigerant through the photovoltaic thermal component and / or the evaporator to change the flow path of the refrigerant in the photovoltaic thermal evaporation component.

[0022] In addition, the controller controls the conduction states of the first control valve, the second control valve, the third control valve and the fourth control valve, specifically including:

[0023] used to control the first control valve to close, the second control valve to open, the third control valve to open, and the fourth control valve to close, so as to control the refrigerant to flow through the passage formed by the first bypass pipe and the evaporator in the photothermal evaporation component; and

[0024] used to control the first control valve to open, the second control valve to close, the third control valve to close, and the fourth control valve to open, so as to control the refrigerant to flow through the passage formed by the photovoltaic thermal component and the second bypass pipe in the photothermal evaporation component; and

[0025] Used to control the first control valve to open, the second control valve to open, the third control valve to close, and the fourth control valve to close, so as to control the refrigerant to flow through the passage formed by the photovoltaic thermal component and the evaporator in the photothermal evaporation component.

[0026] In addition, the photovoltaic thermal assembly includes at least two photovoltaic thermal elements connected in parallel; an expansion valve is provided on the input end of each photovoltaic thermal element;

[0027] The controller is control-connected to each of the expansion valves, and is used to adjust the number of the photovoltaic thermal components through which the refrigerant flows by controlling the conduction state of each of the expansion valves.

[0028] In addition, it also includes a first throttling control component and a second throttling control component; the first throttling control component is arranged at the refrigerant inlet of the evaporator, and is used to control the pressure and flow of the refrigerant to enter the evaporator; the second throttling control component is arranged at the refrigerant outlet of the condenser, and is used to control the pressure and flow of the refrigerant output by the condenser.

[0029] In addition, the current environmental information includes solar irradiance and environmental dew point temperature; and controlling the flow path of the refrigerant in the photovoltaic thermal evaporation component according to the current environmental information and the temperature of the photovoltaic thermal component includes:

[0030] When the solar irradiance is equal to zero, controlling the refrigerant in the photothermal evaporation component to flow only through the evaporator;

[0031] When the solar irradiance is greater than zero, the flow path of the refrigerant in the photovoltaic thermal evaporation component is controlled according to the temperature of the photovoltaic thermal component, the ambient dew point temperature and the evaporation temperature of the refrigerant in the system.

[0032] In addition, the control of the flow path of the refrigerant in the photovoltaic thermal evaporation component according to the temperature of the photovoltaic thermal component, the ambient dew point temperature and the evaporation temperature of the refrigerant in the pipeline includes:

[0033] When the temperature of the photovoltaic thermal component is lower than the ambient dew point temperature, controlling the refrigerant in the photovoltaic thermal evaporation component to flow only through the evaporator;

[0034] When the temperature of the photovoltaic thermal assembly is greater than the ambient dew point temperature, further determining whether the evaporation temperature of the refrigerant in the refrigerant circulation loop is less than the ambient dew point temperature;

[0035] If the evaporation temperature of the refrigerant is greater than the ambient dew point temperature and less than the temperature of the photovoltaic thermal component, the refrigerant is controlled to flow only through the photovoltaic thermal component in the photovoltaic thermal evaporation component, and the temperature of the photovoltaic thermal component and the evaporation temperature of the refrigerant are compared in real time. When the temperature of the photovoltaic thermal component is lower than the evaporation temperature of the refrigerant, the refrigerant is controlled to flow through the photovoltaic thermal component and the evaporator in the photovoltaic thermal evaporation component in sequence. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0037] Figure 1 is a schematic structural diagram of a photovoltaic-thermal heat pump system provided according to an embodiment of the present invention;

[0038] Figure 2 is a schematic diagram of the connection between the controller and each valve provided according to an embodiment of the present invention;

[0039] Figure 3 The process of the control method of the heat pump system provided according to one embodiment of the present invention is as follows: Figure 1 ;

[0040] Figure 4 The process of the control method of the heat pump system provided according to one embodiment of the present invention is as follows: Figure 2 ;

[0041] Figure 5 The process of the control method of the heat pump system provided according to one embodiment of the present invention is as follows: Figure 3 ;

[0042] Figure 6 is a schematic diagram of the structure of an electronic device provided by another embodiment of the present application;

[0043] Figure 7 It is a schematic diagram of the structure of a computer-readable storage medium provided by another embodiment of the present application.

[0044] In the figure, 1. photothermal evaporation component; 11. photovoltaic thermal component; 111. photovoltaic thermal element; 12. evaporator; 13. main pipeline; 14. bypass pipeline; 141. first bypass pipeline; 142. second bypass pipeline; 15. first control valve; 16. second control valve; 17. third control valve; 18. fourth control valve; 2. compressor; 3. condenser; 4. controller; 5. first expansion valve; 6. first throttling control element; 7. second throttling control element; 8. second expansion valve. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, it can be understood by those skilled in the art that in the embodiments of the present invention, many technical details are provided to enable readers to better understand the present invention. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present invention can be implemented.

[0046] In order to facilitate understanding of the embodiments of the present application, relevant contents about the heat pump system are first introduced here.

[0047] In order to achieve the grand goal of "3060" carbon reduction, it is necessary to vigorously develop new energy technologies. Because the energy projected to the earth by the sun is very large, reaching 1.73×1017W, equivalent to the total power generated by 173 million million-kilowatt power plants, which is many times greater than the total amount of various types of energy currently used by humans each year, photovoltaic power generation technology is considered to be one of the most promising new energy technologies.

[0048] There are key issues that need to be addressed in the use of photovoltaic power generation: theoretically, the better the sunshine conditions, the stronger the sunlight, the more irradiation energy invested in the photovoltaic panels, and the more electricity the photovoltaic panels can generate. However, the photovoltaic panels have the disadvantage that their power generation efficiency decreases significantly as their own temperature rises. The better the sunshine conditions, the more the working temperature of the photovoltaic modules will increase significantly, thus greatly reducing their power generation efficiency. However, if the waste heat generated by light during the operation of photovoltaics is removed in time, it can not only maintain the good working temperature of the photovoltaic modules, but also increase the heat output without increasing the photovoltaic area, achieving the purpose of killing two birds with one stone.

[0049] In the prior art, photovoltaic thermal modules are usually connected to heat pump circulation devices, and the evaporator, condenser and compressor in the heat pump circulation device are used to perform heat exchange treatment on the refrigerant, so as to continuously generate electricity and utilize heat energy. However, due to the influence of weather changes, the temperature of photovoltaic thermal modules will change significantly during the operation of the whole day and the whole year, which will lead to significant changes in the state of the refrigerant. In the prior art, it is usually only dependent on the evaporator in the heat pump circulation device for heat exchange treatment, which may cause large fluctuations in heat generation due to environmental influences, and may cause condensation water to form on the surface of the photovoltaic thermal module, thereby affecting the power generation efficiency and causing unstable operation.

[0050] In order to solve the technical problem of large fluctuations in heat generation caused by the above-mentioned environmental influences, the present invention proposes a heat pump system based on photovoltaic thermal energy. The implementation details of the heat pump system based on photovoltaic thermal energy in this embodiment are described in detail below. The following content is only the implementation details provided for the convenience of understanding and is not necessary for the implementation of this solution.

[0051] Embodiment 1:

[0052] The implementation details of the photovoltaic-thermal heat pump system of this embodiment are described in detail below. The following content is only provided for the convenience of understanding the implementation details and is not necessary for the implementation of this solution.

[0053] The embodiment of the present invention provides a photovoltaic heat pump system. Figure 1and Figure 2 As shown, it includes: a photothermal evaporation component 1, a compressor 2, a condenser 3 and a controller 4 which are sequentially connected along the circulation direction of the built-in refrigerant; wherein the photothermal evaporation component 1 includes a main pipeline 13 formed by a photovoltaic thermal component 11 and an evaporator 12 which are sequentially connected in series according to the flow method of the built-in refrigerant, and a bypass pipeline 14 connected to the main pipeline 13; the controller 4 is controlled and connected to the main pipeline 13 and the bypass pipeline 14, and is used to control the refrigerant to switchably flow through the photovoltaic thermal component 11 and / or the evaporator 12 by adjusting the conduction state of the main pipeline 13 and the bypass pipeline 14, so as to change the flow path of the refrigerant in the photothermal evaporation component 1.

[0054] In this embodiment, the photothermal evaporation component 1 is configured with four working states, specifically including the refrigerant only flowing through the photovoltaic thermal component 11, the refrigerant only flowing through the evaporator 12, the refrigerant flowing through the photovoltaic thermal component 11 and the evaporator 12 in sequence, and the refrigerant only flowing through the bypass pipe 14, so that the flow path of the refrigerant in the photovoltaic evaporation component can be dynamically adjusted according to different environments, and the photovoltaic thermal component 11 and the evaporator 12 can be flexibly utilized for heat exchange, so as to efficiently and stably provide thermal energy to customers, and make full use of the heat generated by the photovoltaic thermal component 11 to avoid the problem of condensation water on the surface of the photovoltaic thermal component 11 affecting its power generation efficiency.

[0055] In some examples, the photovoltaic thermal assembly 11 includes at least two photovoltaic thermal elements 111 connected in parallel; an expansion valve is provided on the input end of each photovoltaic thermal element 111; in this embodiment, the expansion valve connected to the photovoltaic thermal element 111 is recorded as the first expansion valve 5, and the controller 4 is controlled and connected to each first expansion valve 5, and is used to adjust the number of photovoltaic thermal elements 111 through which the refrigerant flows by controlling the conduction state of each first expansion valve 5. In this embodiment, four photovoltaic thermal elements 111 connected in parallel are arranged as an example, so that according to the heat exchange demand, the corresponding number of first expansion valves 5 are opened to connect the refrigerant, thereby improving the heat exchange efficiency, and the amount of refrigerant connected can be adjusted by adjusting the opening of the expansion valve, so as to further efficiently and stably provide heat for users.

[0056] In some examples, the heat pump system further includes a first throttling control member 6 and a second throttling control member 7; the first throttling control member 6 is disposed at the refrigerant inlet of the evaporator 12, and is used to control the pressure and flow of the refrigerant to be introduced into the evaporator 12; the second throttling control member 7 is disposed at the refrigerant outlet of the condenser 3, and is used to control the pressure and flow of the refrigerant outputted from the condenser 3. Specifically, the first throttling control member 6 and the second throttling control member 7 are both throttles, so as to control the flow and pressure of the refrigerant in the pipeline to meet the heating needs of the user.

[0057] Furthermore, the bypass pipe 14 includes a first bypass pipe 141 connected in parallel to both ends of the photovoltaic thermal assembly 11, and a second bypass pipe 142 connected in parallel to both ends of the evaporator 12. Based on the first bypass pipe 141 and the second bypass pipe 142, when the conduction state of the main pipe 13 and the bypass pipe 14 is adjusted by the controller 4, the first refrigerant inlet of the photovoltaic thermal assembly 11, the second refrigerant inlet of the evaporator 12, the first bypass pipe 141 and the second bypass pipe 142 can be controlled by the controller 4, so that the flow path of the refrigerant in the photovoltaic thermal evaporation assembly 1 can be adjusted.

[0058] Furthermore, in order to conveniently control the conduction state of the main pipeline 13 and the bypass pipeline 14, the photovoltaic thermal evaporation component 1 also includes a first control valve 15, a second control valve 16, a third control valve 17 and a fourth control valve 18. Among them, the first control valve 15 is installed at the first refrigerant inlet, and is used to control the refrigerant flowing into the photovoltaic thermal component 11; the second control valve 16 is installed at the second refrigerant inlet, and is used to control the refrigerant flowing into the evaporator 12; the third control valve 17 is installed on the first bypass pipeline 141, and is used to control the refrigerant flowing through the first bypass pipeline 141; the fourth control valve 18 is installed on the second bypass pipeline 142, and is used to control the refrigerant flowing through the second bypass pipeline 142.

[0059] In this embodiment, Figure 1 and Figure 2 As shown, the first control valve 15, the second control valve 16, the third control valve 17 and the fourth control valve 18 are all connected to and controlled by the controller 4, and the controller 4 is used to control the conduction state of the first control valve 15, the second control valve 16, the third control valve 17 and the fourth control valve 18 to control the refrigerant to switchably flow through the photovoltaic thermal component 11 and / or the evaporator 12 to change the flow path of the refrigerant in the photovoltaic thermal evaporation component 1. Specifically,

[0060] The controller 4 is used to control the first control valve 15 to be closed, the second control valve 16 to be opened, the third control valve 17 to be opened, and the fourth control valve 18 to be closed, so as to control the refrigerant to flow through the passage formed by the first bypass pipe 141 and the evaporator 12 in the photothermal evaporation assembly 1, so as to control the refrigerant to flow only through the evaporator 12; and,

[0061] Used to control the first control valve 15 to open, the second control valve 16 to close, the third control valve 17 to close, and the fourth control valve 18 to open, so as to control the refrigerant to flow through the photovoltaic thermal component 11 and the passage formed by the second bypass pipe 142 in the photothermal evaporation component 1, so as to control the refrigerant to flow only through the photovoltaic thermal component 11; and,

[0062] Used to control the opening of the first control valve 15, the opening of the second control valve 16, the closing of the third control valve 17, and the closing of the fourth control valve 18, so as to control the refrigerant to flow through the passage formed by the photovoltaic thermal component 11 and the evaporator 12 in the photothermal evaporation component 1, so as to control the refrigerant to flow through the photovoltaic thermal component 11 and the evaporator 12 in sequence.

[0063] Among them, each control mode of the controller 4 is configured as a control instruction. When the environment of the heat pump system changes, the controller 4 executes the corresponding control instruction according to the environmental information, thereby dynamically adjusting the flow path of the refrigerant in the photovoltaic evaporation component according to different environments, and can flexibly utilize the photovoltaic thermal component 11 and the evaporator 12 for heat exchange, thereby providing customers with heat energy efficiently and stably.

[0064] In some examples, a second expansion valve 8 is further provided on the pipeline between the second control valve 16 and the evaporator 12. The second expansion valve 8 is control-connected to the controller 4. The opening of the second expansion valve 8 is controlled to control the appropriate refrigerant flow rate to efficiently meet the user's thermal demand.

[0065] In some examples, the heat pump system also includes a temperature sensor for detecting the temperature of the photovoltaic thermal component 11 and an environmental detector for detecting the ambient dew point temperature and solar irradiance. The environmental detector and the temperature sensor are both connected to the controller 4, so that the controller 4 selects appropriate control instructions based on the feedback data from the temperature sensor and the environmental detector to control the photothermal evaporation component 1, and provides a refrigerant flow path that adapts to current environmental changes.

[0066] The photovoltaic-thermal heat pump system provided in the present embodiment forms a photovoltaic evaporation component 1 by combining a photovoltaic component and an evaporator 12, so that when the environment changes, the controller 4 can be used to adjust the conduction state of the main pipeline 13 and the bypass pipeline 14, and control the refrigerant to switchably flow through the photovoltaic component 11 and / or the evaporator 12, so as to change the flow path of the refrigerant in the photovoltaic evaporation component 1, so that the flow path of the refrigerant adapts to environmental changes, and can flexibly use the photovoltaic component 11 and the evaporator 12 for heat exchange, efficiently and stably provide thermal energy to customers, and make full use of the heat generated by the photovoltaic component 11 to avoid the problem of condensation water on the surface of the photovoltaic component 11 affecting its power generation efficiency; at the same time, the photovoltaic component 11 and the evaporator 12 are connected in series, and the heat exchange efficiency of the photovoltaic evaporation component 1 can be adjusted by controlling the conduction state of the bypass pipeline 14 and the main pipeline 13, the control method is simple, and can ensure sufficient forward flow of the refrigerant, avoid backflow, and ensure stable heat output.

[0067] Embodiment 2

[0068] The embodiment of the present invention is a detailed description of the control of the bypass pipeline and the main pipeline. The photothermal evaporation component also includes a first three-way valve and a second three-way valve. The first three-way valve is installed at the connection between the first bypass pipeline and the main pipeline and the refrigerant inlet connection end of the photovoltaic photothermal component, and the second three-way valve is installed at the connection between the second bypass pipeline and the main pipeline and the refrigerant inlet connection end of the evaporator. The first three-way valve and the second three-way valve are connected and controlled by a controller, so that the controller directly controls the first three-way valve and the second three-way valve to adjust the refrigerant flow path. Compared with the embodiment 1, the switching control of the conduction state of the first bypass pipeline and the second bypass pipeline is simpler, the failure rate is reduced, and the stability of the system is improved.

[0069] Embodiment 3

[0070] The embodiment of the present invention further provides a control method for a heat pump system, which is applicable to the heat pump system in the first embodiment. Figure 3 As shown, the control method of the heat pump system includes:

[0071] Step 101, obtaining current environmental information and the temperature of the photovoltaic thermal assembly;

[0072] Step 102, controlling the flow path of the refrigerant in the photovoltaic thermal evaporation component according to the current environmental information and the temperature of the photovoltaic thermal component; wherein the flow path of the refrigerant in the photovoltaic thermal evaporation component includes: the refrigerant flows through the photovoltaic thermal component and / or the evaporator.

[0073] Specifically, the flow path of the refrigerant in the photothermal evaporation component specifically includes: the refrigerant only flows through the evaporator in the photothermal evaporation component, the refrigerant only flows through the photovoltaic thermal component in the photothermal evaporation component, the refrigerant flows through the photovoltaic thermal component and the evaporator in sequence in the photothermal evaporation component, and the refrigerant only flows through the bypass pipe in the photothermal evaporation component.

[0074] In some examples, the current environmental information includes solar irradiance and environmental dew point temperature. Step 102, such as Figure 4 As shown, including:

[0075] Step 201, when the solar irradiance is equal to zero, controlling the refrigerant in the photothermal evaporation assembly to flow only through the evaporator;

[0076] Step 202: When the solar irradiance is greater than zero, the flow path of the refrigerant in the photovoltaic thermal evaporation component is controlled according to the temperature of the photovoltaic thermal component, the ambient dew point temperature and the evaporation temperature of the refrigerant in the system; wherein the evaporation temperature of the refrigerant is preset in the system.

[0077] Specifically, when the solar irradiance is equal to zero, it indicates that the heat pump system is in a night environment, and when the solar irradiance is greater than zero, it indicates that the heat pump system is in a day environment.

[0078] Furthermore, the flow path of the refrigerant in the photovoltaic thermal evaporation component is controlled according to the temperature of the photovoltaic thermal component, the ambient dew point temperature and the evaporation temperature of the refrigerant in the pipeline, such as Figure 5 As shown, including:

[0079] Step 301, determining whether the temperature of the photovoltaic thermal component is less than the ambient dew point temperature;

[0080] Step 302: When the temperature of the photovoltaic thermal component is lower than the ambient dew point temperature, control the refrigerant in the photovoltaic thermal evaporation component to flow only through the evaporator;

[0081] Step 303: When the temperature of the photovoltaic thermal assembly is greater than the ambient dew point temperature, further determine whether the evaporation temperature of the refrigerant in the refrigerant circulation loop is less than the ambient dew point temperature;

[0082] If the evaporation temperature of the refrigerant is lower than the ambient dew point temperature, controlling the refrigerant in the photothermal evaporation assembly to flow only through the evaporator;

[0083] If the evaporation temperature of the refrigerant is greater than the ambient dew point temperature and less than the temperature of the photovoltaic thermal component, the refrigerant is controlled to flow only through the photovoltaic thermal component in the photovoltaic thermal evaporation component, and the temperature of the photovoltaic thermal component is compared with the ambient dew point temperature in real time; when the temperature of the photovoltaic thermal component is less than the ambient dew point temperature, the refrigerant is controlled to flow through the photovoltaic thermal component and the evaporator in the photovoltaic thermal evaporation component in sequence;

[0084] If the evaporation temperature of the refrigerant is greater than the temperature of the photovoltaic thermal assembly, the refrigerant is controlled to flow only through the evaporator in the photovoltaic thermal evaporation assembly.

[0085] The control method provided in this embodiment can not only make full use of the heat generated by the photovoltaic thermal module, but also avoid the problem of condensation on the surface of the photovoltaic thermal module affecting its power generation efficiency. In addition, by coordinating the control of the photovoltaic thermal module and the evaporator, the photovoltaic thermal heat pump system can avoid the problem of large fluctuations in heat generation caused by changes in ambient temperature, thereby providing heat energy to customers efficiently and stably.

[0086] Embodiment 4:

[0087] Another embodiment of the present application relates to an electronic device, such as Figure 6 As shown, it includes: at least one processor 901; and a memory 902 that is communicatively connected to the at least one processor 901; wherein the memory 902 stores instructions that can be executed by the at least one processor 901, and the instructions are executed by the at least one processor 901 so that the at least one processor 901 can execute the control method of the heat pump system in the above-mentioned embodiments.

[0088] Among them, the memory and the processor are connected in a bus manner, and the bus may include any number of interconnected buses and bridges, and the bus connects various circuits of one or more processors and memories together. The bus can also connect various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface between the bus and the transceiver. The transceiver can be one element or multiple elements, such as multiple receivers and transmitters, providing a unit for communicating with various other devices on a transmission medium. The data processed by the processor is transmitted on a wireless medium via an antenna, and further, the antenna also receives data and transmits the data to the processor.

[0089] The processor is responsible for managing the bus and general processing, and can also provide various functions, including timing, peripheral interfaces, voltage regulation, power management, and other control functions. Memory can be used to store data used by the processor when performing operations.

[0090] Embodiment five:

[0091] Another embodiment of the present application relates to a computer-readable storage medium, such as Figure 7 As shown, a computer program 31 is stored, and when the computer program 31 is executed by a processor, the above method embodiment is implemented.

[0092] That is, those skilled in the art can understand that all or part of the steps in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium, including a number of instructions to enable a device (which can be a single-chip microcomputer, chip, etc.) or a processor to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, referred to as: ROM), random access memory (Random Access Memory, referred to as: RAM), disk or optical disk and other media that can store program codes.

[0093] It should be understood that the expressions "mechanism", "device", "component" and the like used in this application are only a method for distinguishing different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the word can be replaced by other expressions.

[0094] Those skilled in the art can understand that the above-mentioned embodiments are specific examples for realizing the present invention, and in practical applications, the technical features of the above-mentioned embodiments can be arbitrarily combined. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification, and various changes can be made in form and details without departing from the spirit and scope of the present invention.

Claims

1. A heat pump system based on photovoltaic thermal energy, characterized in that: include: A photothermal evaporation component, a compressor and a condenser are sequentially connected and arranged along the circulation direction of the built-in refrigerant; the photothermal evaporation component includes a main pipeline formed by photovoltaic photothermal components and evaporators sequentially connected in series according to the flow method of the built-in refrigerant, and a bypass pipeline connected to the main pipeline; A controller is control-connected to the main pipeline and the bypass pipeline, and is used to control the refrigerant to switchably flow through the photovoltaic thermal component and / or the evaporator by adjusting the conduction state of the main pipeline and the bypass pipeline, so as to change the flow path of the refrigerant in the photovoltaic thermal evaporation component.

2. A photovoltaic heat pump system according to claim 1, characterized in that: The bypass pipeline comprises: A first bypass pipe connected in parallel to both ends of the photovoltaic thermal assembly, and a second bypass pipe connected in parallel to both ends of the evaporator; The controller is used to control the first refrigerant inlet of the photovoltaic thermal component, the second refrigerant inlet of the evaporator, the first bypass pipe and the second bypass pipe. The conduction state controls the switchable flow of the refrigerant through the photovoltaic thermal component and / or the evaporator to change the flow path of the refrigerant in the photovoltaic thermal evaporation component.

3. A photovoltaic heat pump system according to claim 2, characterized in that: The photothermal evaporation assembly further comprises: A first control valve, installed at the first refrigerant inlet, for controlling the refrigerant flowing into the photovoltaic thermal assembly; a second control valve, installed at the second refrigerant inlet, for controlling the refrigerant flowing into the evaporator; a third control valve, installed on the first bypass pipeline, for controlling the refrigerant flowing through the first bypass pipeline; a fourth control valve, installed on the second bypass pipeline, for controlling the refrigerant flowing through the second bypass pipeline; The controller is used to control the conduction states of the first control valve, the second control valve, the third control valve and the fourth control valve to control the switchable flow of the refrigerant through the photovoltaic thermal component and / or the evaporator to change the flow path of the refrigerant in the photovoltaic thermal evaporation component.

4. A photovoltaic heat pump system according to claim 3, characterized in that: The controller controls the conduction states of the first control valve, the second control valve, the third control valve and the fourth control valve, specifically including: used to control the first control valve to close, the second control valve to open, the third control valve to open, and the fourth control valve to close, so as to control the refrigerant to flow through the passage formed by the first bypass pipe and the evaporator in the photothermal evaporation component; and used to control the first control valve to open, the second control valve to close, the third control valve to close, and the fourth control valve to open, so as to control the refrigerant to flow through the passage formed by the photovoltaic thermal component and the second bypass pipe in the photothermal evaporation component; and Used to control the first control valve to open, the second control valve to open, the third control valve to close, and the fourth control valve to close, so as to control the refrigerant to flow through the passage formed by the photovoltaic thermal component and the evaporator in the photothermal evaporation component.

5. The photovoltaic heat pump system according to claim 1, characterized in that: The photovoltaic thermal assembly comprises at least two photovoltaic thermal elements connected in parallel; an expansion valve is provided on the input end of each photovoltaic thermal element; The controller is control-connected to each of the expansion valves, and is used to adjust the number of the photovoltaic thermal components through which the refrigerant flows by controlling the conduction state of each of the expansion valves.

6. The photovoltaic heat pump system according to claim 1, characterized in that: It also includes a first throttling control component and a second throttling control component; the first throttling control component is arranged at the refrigerant inlet of the evaporator, and is used to control the pressure and flow of the refrigerant to enter the evaporator; the second throttling control component is arranged at the refrigerant outlet of the condenser, and is used to control the pressure and flow of the refrigerant output by the condenser.

7. A control method for a heat pump system, characterized in that: Applicable to the photovoltaic-thermal heat pump system according to any one of claims 1 to 6, the method comprising the following steps: Obtaining current environmental information and the temperature of the photovoltaic thermal component; The flow path of the refrigerant in the photovoltaic thermal evaporation component is controlled according to the current environmental information and the temperature of the photovoltaic thermal component; wherein the flow path of the refrigerant in the photovoltaic thermal evaporation component includes: the refrigerant flows through the photovoltaic thermal component and / or the evaporator.

8. A control method for a heat pump system according to claim 7, characterized in that: The current environmental information includes solar irradiance and environmental dew point temperature; and the method of controlling the flow path of the refrigerant in the photovoltaic thermal evaporation component according to the current environmental information and the temperature of the photovoltaic thermal component includes: When the solar irradiance is equal to zero, controlling the refrigerant in the photothermal evaporation component to flow only through the evaporator; When the solar irradiance is greater than zero, the flow path of the refrigerant in the photovoltaic thermal evaporation component is controlled according to the temperature of the photovoltaic thermal component, the ambient dew point temperature and the evaporation temperature of the refrigerant in the system.

9. A control method for a heat pump system according to claim 8, characterized in that: The method of controlling the flow path of the refrigerant in the photovoltaic thermal evaporation component according to the temperature of the photovoltaic thermal component, the ambient dew point temperature and the evaporation temperature of the refrigerant in the pipeline includes: When the temperature of the photovoltaic thermal component is lower than the ambient dew point temperature, controlling the refrigerant in the photovoltaic thermal evaporation component to flow only through the evaporator; When the temperature of the photovoltaic thermal assembly is greater than the ambient dew point temperature, further determining whether the evaporation temperature of the refrigerant in the refrigerant circulation loop is less than the ambient dew point temperature; If the evaporation temperature of the refrigerant is greater than the ambient dew point temperature and less than the temperature of the photovoltaic thermal component, the refrigerant is controlled to flow only through the photovoltaic thermal component in the photovoltaic thermal evaporation component, and the temperature of the photovoltaic thermal component and the evaporation temperature of the refrigerant are compared in real time. When the temperature of the photovoltaic thermal component is lower than the evaporation temperature of the refrigerant, the refrigerant is controlled to flow through the photovoltaic thermal component and the evaporator in the photovoltaic thermal evaporation component in sequence.

10. An electronic device, characterized in that: include: at least one processor; as well as, a memory communicatively connected to the at least one processor; wherein, The memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can perform the control method of the heat pump system according to any one of claims 7 to 9.

11. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the control method of the heat pump system according to any one of claims 7 to 9 is implemented.

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