Integrated coupling system of solar heat and geothermal heat pump

Abstract

The application provides a medium-deep geothermal source heat pump and solar heat and electricity integrated coupling system, and relates to the technical field of comprehensive energy utilization. The system comprises a solar heat and electricity integrated module, a heat pump unit, a heat preservation water tank for recycling waste heat generated in a photovoltaic power generation process, a medium-deep geothermal heat exchanger for absorbing medium-deep geothermal heat, and a first pipeline and a second pipeline. The first pipeline is connected with a geothermal water inlet of the heat preservation water tank and is provided with a first valve. The second pipeline is connected with an evaporator water inlet of the heat pump unit and is provided with a second valve. The medium-deep geothermal heat exchanger is connected with the heat pump unit. The system combines photovoltaic, photothermal and clean heating technologies, realizes complementary advantages, maximizes benefits, and is suitable for clean heating scenes in cold regions.

Description

Technical Field

[0001] This application relates to the field of comprehensive energy utilization technology, and in particular to a medium-deep ground source heat pump and solar thermoelectric integrated coupling system. Background Technology

[0002] Solar and geothermal energy, as renewable and clean energy sources, are widely used in heating, power supply, and electricity generation, significantly reducing energy consumption and environmental pollution caused by the inefficient combustion of fossil fuels. Photovoltaic power generation generates a large amount of waste heat. Therefore, it is worth considering how to fully utilize this waste heat and organically combine it with geothermal energy to achieve complementary advantages and maximize benefits. Summary of the Invention

[0003] This application aims to at least partially address one of the technical problems in the related art.

[0004] Therefore, the first aspect of this application proposes a medium-deep ground source heat pump and solar thermoelectric integrated coupling system, comprising:

[0005] Solar thermoelectric integrated modules are used for photovoltaic power generation;

[0006] A heat pump unit is connected to a solar thermoelectric integrated module, wherein the solar thermoelectric integrated module provides electrical energy to the heat pump unit, the condenser inlet of the heat pump unit is connected to the outlet on the heating user's side, and the condenser outlet of the heat pump unit is connected to the inlet on the heating user's side.

[0007] An insulated water tank is connected to the solar thermal power integrated module and is used to recover the waste heat generated by the solar thermal power integrated module during photovoltaic power generation. The ground source water outlet of the insulated water tank is connected to the evaporator inlet of the heat pump unit.

[0008] A medium-deep geothermal heat exchanger is used to absorb medium-deep geothermal energy. The outlet of the medium-deep geothermal heat exchanger is connected to the ground source water inlet of the insulated water tank through a first pipe, and a first valve is provided on the first pipe. The outlet of the medium-deep geothermal heat exchanger is connected to the evaporator inlet of the heat pump unit through a second pipe, and a second valve is provided on the second pipe.

[0009] The inlet of the medium-deep geothermal heat exchanger is connected to the outlet of the evaporator of the heat pump unit.

[0010] In some embodiments of this application, the solar thermoelectric integrated module is connected to the power grid.

[0011] In some embodiments of this application, the insulated water tank is also used to heat domestic water.

[0012] The second aspect of this application proposes a control method for a medium-deep ground source heat pump and solar thermoelectric integrated coupling system as described in the first aspect above, comprising:

[0013] Determine the current season information and the water temperature of the insulated water tank;

[0014] Based on the current seasonal information and the water temperature of the insulated water tank, the first valve, the second valve, and the heat pump unit are controlled to utilize the medium-deep geothermal heat absorbed by the medium-deep geothermal heat exchanger and / or the geothermal water heated by the insulated water tank to enter the evaporator inlet of the heat pump unit.

[0015] In some embodiments of this application, the current season information includes heating season and non-heating season; the step of controlling the first valve, the second valve, and the heat pump unit according to the current season information and the water temperature of the insulated water tank, so as to utilize the medium-deep geothermal heat absorbed by the medium-deep geothermal heat exchanger and / or the geothermal water entering the evaporator inlet of the heat pump unit to heat the ground source water entering the heat pump unit, includes: controlling the heat pump unit to be in operation when the current season information is heating season; and closing the first valve when the water temperature in the insulated water tank is less than a first threshold. The system can either open the first valve and close the second valve when the water temperature in the insulated water tank is greater than or equal to the first threshold, so that the ground source water entering the evaporator inlet of the heat pump unit is heated by the medium-deep geothermal heat absorbed by the medium-deep geothermal heat exchanger and the ground source water entering the evaporator inlet of the heat pump unit is heated by the heat pump unit and then heated by the heat pump unit.

[0016] In some embodiments of this application, controlling the first valve, the second valve, and the heat pump unit based on the current seasonal information and the water temperature of the insulated water tank to utilize the medium-deep geothermal heat absorbed by the medium-deep geothermal heat exchanger and / or the geothermal water entering the evaporator inlet of the heat pump unit from the insulated water tank includes: when the current seasonal information is a non-heating season, controlling the heat pump unit to be in a non-operating state; when the water temperature in the insulated water tank is greater than or equal to a second threshold, opening the first valve and closing the second valve to utilize the insulated water tank to heat the geothermal water entering the evaporator inlet of the heat pump unit to supplement the geothermal heat.

[0017] In some embodiments of this application, the method further includes: controlling the electrical energy generated by the solar thermoelectric integrated module to supply power to the heat pump unit, and providing the remaining portion of the electrical energy generated by the solar thermoelectric integrated module to the power grid.

[0018] The third aspect of this application proposes a control device for a medium-deep ground source heat pump and solar thermoelectric integrated coupling system as described in the first aspect above, comprising: a determination module for determining current seasonal information and the water temperature of the insulated water tank;

[0019] The control module is used to control the first valve, the second valve, and the heat pump unit according to the current seasonal information and the water temperature of the insulated water tank, so as to utilize the medium-deep geothermal heat absorbed by the medium-deep geothermal heat exchanger and / or the geothermal water heated by the insulated water tank to enter the evaporator inlet of the heat pump unit.

[0020] In some embodiments of this application, the current season information includes the heating season and the non-heating season; the control module is specifically used to: control the operation of the heat pump unit when the current season information is the heating season; when the water temperature in the insulated water tank is less than a first threshold, close the first valve and open the second valve to utilize the geothermal energy absorbed by the geothermal heat exchanger to heat the ground source water entering the evaporator inlet of the heat pump unit, and provide heating to the heating user side through the heat pump unit; or, when the water temperature in the insulated water tank is greater than or equal to the first threshold, open the first valve and close the second valve to utilize the geothermal energy absorbed by the geothermal heat exchanger and the ground source water heated by the insulated water tank to heat the evaporator inlet of the heat pump unit, and provide heating to the heating user side through the heat pump unit.

[0021] In some embodiments of this application, the control module is specifically used to: control the heat pump unit to be in a non-operational state when the current season information is a non-heating season; and open the first valve and close the second valve when the water temperature in the insulated water tank is greater than or equal to a second threshold, so as to use the insulated water tank to heat the ground source water entering the evaporator inlet of the heat pump unit to supplement the ground temperature.

[0022] The fourth aspect of this application proposes a non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that the program, when executed by a processor, implements the method described in the first aspect above.

[0023] The medium-deep ground source heat pump and solar thermoelectric integrated coupling system proposed in this application can provide electricity to the heat pump unit through the solar thermoelectric integrated module, reducing the operating cost of the heat pump unit. Furthermore, it improves system safety and is suitable for clean heating scenarios in cold regions. This application organically combines photovoltaic, solar thermal, and clean heating technologies to achieve complementary advantages and maximize benefits.

[0024] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0026] Figure 1 A schematic diagram of a medium-deep ground source heat pump and solar thermoelectric integrated coupling system provided in an embodiment of this application;

[0027] Figure 2 A schematic diagram of a PVT solar panel provided in an embodiment of this application;

[0028] Figure 3 A schematic flowchart illustrating a control method for a medium-deep ground source heat pump and solar thermoelectric integrated coupling system provided in this application embodiment;

[0029] Figure 4 This is a schematic diagram of a control device for a medium-deep ground source heat pump and solar thermoelectric integrated coupling system provided in an embodiment of this application. Detailed Implementation

[0030] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0031] This application proposes a medium-deep ground source heat pump and solar thermoelectric integrated coupling system. Specifically, the medium-deep ground source heat pump and solar thermoelectric integrated coupling system of this application is described below with reference to the accompanying drawings.

[0032] Figure 1 This is a schematic diagram of a medium-deep ground source heat pump and solar thermoelectric integrated coupling system provided as an embodiment of this application. Figure 1 As shown, the integrated coupling system of medium-deep ground source heat pump and solar thermoelectric power includes:

[0033] A solar-thermal-electric integrated module 101 is used for photovoltaic power generation. This solar-thermal-electric integrated module 101 includes a PVT solar panel. Figure 2 This is a schematic diagram of a PVT solar panel provided in an embodiment of this application. The PVT solar panel combines photovoltaic and photothermal technologies to achieve photovoltaic-photothermal integration.

[0034] The heat pump unit 102 is connected to a solar thermoelectric integrated module 101, which provides power to the heat pump unit 102. The solar thermoelectric integrated module 101 uses photovoltaic power generated by the solar thermoelectric integrated module 101 to power the heat pump unit 102, thus reducing its operating costs. The condenser inlet of the heat pump unit 102 is connected to the outlet on the user's side of the heating system, and the condenser outlet of the heat pump unit 102 is connected to the inlet on the user's side of the heating system.

[0035] An insulated water tank 103 is connected to the solar thermoelectric integrated module 101 and is used to recover waste heat generated by the solar thermoelectric integrated module 101 during photovoltaic power generation. The ground source water outlet of the insulated water tank 103 is connected to the evaporator inlet of the heat pump unit 102. It should be noted that because some of the waste heat from the solar thermoelectric integrated module 101 is recovered by the insulated water tank 103, the temperature of the photovoltaic cells can be reduced, and the power generation efficiency can be increased by 8%-15%.

[0036] The medium-deep geothermal heat exchanger 104 is used to absorb medium-deep geothermal energy. The outlet of the medium-deep geothermal heat exchanger 104 is connected to the ground source water inlet of the insulated water tank 103 through a first pipe 110. A first valve 105 is provided on the first pipe 110. The outlet of the medium-deep geothermal heat exchanger 104 is connected to the evaporator inlet of the heat pump unit 102 through a second pipe 111. A second valve 106 is provided on the second pipe 111.

[0037] The evaporator outlet of the heat pump unit 102 is connected to the inlet of the medium-deep geothermal heat exchanger 104.

[0038] In the integrated coupling system of medium-deep geothermal heat pump and solar thermoelectric power provided in this application embodiment, the first valve 105 and the second valve 106 can be controlled according to actual conditions. The geothermal water entering the evaporator inlet of the heat pump unit 102 can be heated by the medium-deep geothermal heat absorbed by the medium-deep geothermal heat exchanger 104, or by the waste heat from photovoltaic power generation recovered from the medium-deep geothermal heat absorbed by the medium-deep geothermal heat exchanger 104 and the insulated water tank 103. This further increases the temperature of the geothermal water entering the heat pump unit 102, thereby improving the heating efficiency of the heat pump unit 102. In the event of prolonged extreme weather conditions such as rain or snow, the geothermal return water can also be used to heat the insulated water tank 103 through the first pipe 110, preventing the insulated water tank 103 from freezing and ensuring system safety.

[0039] Optionally, in some embodiments of this application, such as Figure 1As shown, the solar thermoelectric integrated module 101 can also be connected to the power grid 107. In some embodiments of this application, a controller and an inverter may be provided between the solar thermoelectric integrated module 101 and the power grid 107. That is, the solar thermoelectric integrated module 101 can be used to supply power to the heat pump unit 102, and the electrical energy generated by the solar thermoelectric integrated module 101 can also be supplied to the power grid. As an example, the electrical energy generated by the solar thermoelectric integrated module 101 can be preferentially supplied to the heat pump unit 102, with the remaining electrical energy fed into the grid, which can effectively reduce the operating cost of the heat pump unit 102.

[0040] Optionally, in some embodiments of this application, an insulated water tank can also be used to heat domestic water.

[0041] It should be noted that during the non-heating season, there is no need to supply heat to the heating users, and the heat pump unit 102 will not start. In some embodiments of this application, during the non-heating season, the insulated water tank 103 can be used to supply domestic hot water first. The excess heat can be used to supplement the medium-deep geothermal heat through the first pipe 110, part of the pipes in the heat pump unit 102, and the pipe between the evaporator outlet of the heat pump unit 102 and the inlet of the medium-deep geothermal heat exchanger 104, which can avoid the soil thermal balance problem to a certain extent.

[0042] The medium-deep geothermal heat pump and solar thermoelectric integrated coupling system proposed in this application can provide electricity to the heat pump unit through the solar thermoelectric integrated module, reducing the operating cost of the heat pump unit. Furthermore, it improves system safety and is suitable for clean heating scenarios in cold regions. This application organically combines photovoltaic, solar thermal, medium-deep geothermal, heat pump, and clean heating technologies to achieve complementary advantages and maximize benefits.

[0043] This application also proposes a control method for a medium-deep ground source heat pump and solar thermoelectric integrated coupling system, which can be applied to the medium-deep ground source heat pump and solar thermoelectric integrated coupling system described in any of the above embodiments. Figure 3 This is a schematic flowchart illustrating a control method for a medium-deep ground source heat pump and solar thermoelectric integrated coupling system provided in an embodiment of this application. Figure 3 As shown, the control method may include the following steps:

[0044] Step 301: Determine the current season information and the water temperature of the insulated water tank.

[0045] Optionally, in some embodiments of this application, the current season information may include the heating season and the non-heating season.

[0046] Step 302: Based on the current seasonal information and the water temperature of the insulated water tank, control the first valve, the second valve, and the heat pump unit to utilize the geothermal heat absorbed by the medium-deep geothermal heat exchanger and / or the geothermal water heated by the insulated water tank to enter the evaporator inlet of the heat pump unit.

[0047] As one possible implementation, when the current season is the heating season, the heat pump unit is controlled to be in operation. When the water temperature in the insulated water tank is lower than a first threshold, the first valve is closed and the second valve is opened to utilize the medium-deep geothermal heat absorbed by the medium-deep geothermal heat exchanger to heat the ground source water entering the evaporator inlet of the heat pump unit, and then supply heating to the heating users through the heat pump unit.

[0048] As another possible implementation, when the current season is the heating season, the heat pump unit is controlled to be in operation. When the water temperature in the insulated water tank is greater than or equal to a first threshold, the first valve is opened and the second valve is closed. This utilizes the geothermal energy absorbed by the medium-deep geothermal heat exchanger and the geothermal water heated by the insulated water tank to heat the ground source water entering the evaporator inlet of the heat pump unit, which then provides heating to the user side through the heat pump unit. The insulated water tank further increases the temperature of the ground source water entering the heat pump unit, thereby improving the heating efficiency of the heat pump unit. Optionally, the first threshold can be 20°C.

[0049] As another possible implementation, when the current season is the non-heating season, the heat pump unit is controlled to be in a non-operational state, meaning that geothermal energy is not required to provide heating for users. When the water temperature in the insulated water tank is greater than or equal to a second threshold, the first valve is opened and the second valve is closed. This allows the geothermal water entering the evaporator inlet of the heat pump unit to be heated using the insulated water tank. Then, the geothermal water, which has absorbed heat from the insulated water tank, is passed through a portion of the pipes in the heat pump unit and the pipe between the evaporator outlet of the heat pump unit and the inlet of the medium-deep geothermal heat exchanger to supplement the heat of the medium-deep geothermal layer. This can, to some extent, avoid soil thermal balance problems.

[0050] Optionally, the second threshold can be 45℃. As an example, when the current season is the non-heating season, the heat pump unit is controlled to be in a non-operational state. When the water temperature in the insulated water tank is greater than or equal to 45℃, the first valve is opened and the second valve is closed, allowing the 25℃ geothermal water at the outlet of the medium-deep geothermal heat exchanger to absorb heat from the insulated water tank, heating the 25℃ geothermal water to 35℃. Then, through some pipes in the heat pump unit and the pipe between the evaporator outlet of the heat pump unit and the inlet of the medium-deep geothermal heat exchanger, the geothermal water heated by the insulated water tank is passed to the medium-deep geothermal heat exchanger to supplement the medium-deep geothermal heat. When the water temperature in the insulated water tank is less than 45℃, the first and second valves can be closed, and the heat from the insulated water tank is not used to supplement the geothermal temperature.

[0051] Optionally, in some embodiments of this application, the electrical energy generated by the solar thermoelectric integrated module can also be controlled to power the heat pump unit, and the remaining electrical energy generated by the solar thermoelectric integrated module can be supplied to the power grid, thereby reducing the operating cost of the heat pump unit.

[0052] According to the control method of the medium-deep ground source heat pump and solar thermoelectric integrated coupling system of the present application embodiment, the first valve and the second valve can be controlled according to the current seasonal information and the water temperature in the insulated water tank, so as to make full and flexible use of photovoltaic waste heat and geothermal heat for heating or geothermal supplementation. It is suitable for clean heating scenarios in cold regions and maximizes benefits.

[0053] This application also proposes a control device for a medium-deep ground source heat pump and solar thermoelectric integrated coupling system, which can be applied to the medium-deep ground source heat pump and solar thermoelectric integrated coupling system described in any of the above embodiments. Figure 4 This is a schematic diagram of a control device for a medium-deep ground source heat pump and solar thermoelectric integrated coupling system provided in an embodiment of this application. Figure 4 As shown, the control device may include:

[0054] The determination module 401 is used to determine the current season information and the water temperature of the insulated water tank.

[0055] The control module 402 is used to control the first valve, the second valve and the heat pump unit according to the current seasonal information and the water temperature of the insulated water tank, so as to utilize the geothermal heat absorbed by the medium-deep geothermal heat exchanger and / or the geothermal water heated by the insulated water tank to enter the evaporator inlet of the heat pump unit.

[0056] In some embodiments of this application, the current season information may include the heating season and the non-heating season. Specifically, the control module 402 is used to: control the operation of the heat pump unit when the current season information is the heating season; when the water temperature in the insulated water tank is less than a first threshold, close the first valve and open the second valve to utilize the geothermal energy absorbed by the geothermal heat exchanger to heat the ground source water entering the evaporator inlet of the heat pump unit, and then provide heating to the heating user side through the heat pump unit; or, when the water temperature in the insulated water tank is greater than or equal to the first threshold, open the first valve and close the second valve to utilize the geothermal energy absorbed by the geothermal heat exchanger and the ground source water heated by the insulated water tank to heat the ground source water entering the evaporator inlet of the heat pump unit, and then provide heating to the heating user side through the heat pump unit.

[0057] In some embodiments of this application, the control module 402 is specifically used to: control the heat pump unit to be in a non-operational state when the current season information is non-heating season; and open the first valve and close the second valve when the water temperature in the insulated water tank is greater than or equal to the second threshold, so as to use the insulated water tank to heat the ground source water entering the evaporator inlet of the heat pump unit to supplement the ground temperature.

[0058] Regarding the control device in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0059] To implement the above embodiments, this application also provides an electronic device. This electronic device may include a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it performs the control method for the integrated coupling system of a medium-deep ground source heat pump and solar thermoelectricity described in any of the above embodiments of this application.

[0060] To implement the above embodiments, this application also proposes a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the control method of the integrated coupling system of medium-deep ground source heat pump and solar thermoelectric system described in any of the above embodiments of this application.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0064] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0065] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0066] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0067] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0068] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A control method for a medium-deep ground source heat pump and solar thermoelectric integrated coupling system, characterized in that, A medium-deep ground source heat pump and solar thermal power integrated coupling system includes: Solar thermoelectric integrated modules are used for photovoltaic power generation; A heat pump unit is connected to a solar thermoelectric integrated module, wherein the solar thermoelectric integrated module provides electrical energy to the heat pump unit, the condenser inlet of the heat pump unit is connected to the outlet on the heating user's side, and the condenser outlet of the heat pump unit is connected to the inlet on the heating user's side. An insulated water tank is connected to the solar thermal power integrated module and is used to recover the waste heat generated by the solar thermal power integrated module during photovoltaic power generation. The ground source water outlet of the insulated water tank is connected to the evaporator inlet of the heat pump unit. A medium-deep geothermal heat exchanger is used to absorb medium-deep geothermal energy. The outlet of the medium-deep geothermal heat exchanger is connected to the ground source water inlet of the insulated water tank through a first pipe, and a first valve is provided on the first pipe. The outlet of the medium-deep geothermal heat exchanger is connected to the evaporator inlet of the heat pump unit through a second pipe, and a second valve is provided on the second pipe. The inlet of the medium-deep geothermal heat exchanger is connected to the outlet of the evaporator of the heat pump unit. The control method includes: Determine the current season information and the water temperature of the insulated water tank; Based on the current seasonal information and the water temperature of the insulated water tank, control the first valve, the second valve, and the heat pump unit to utilize the medium-deep geothermal heat absorbed by the medium-deep geothermal heat exchanger and / or the geothermal water heated by the insulated water tank to enter the evaporator inlet of the heat pump unit; The current seasonal information includes the heating season and the non-heating season; the step of controlling the first valve, the second valve, and the heat pump unit based on the current seasonal information and the water temperature of the insulated water tank, so as to utilize the medium-deep geothermal heat absorbed by the medium-deep geothermal heat exchanger and / or the geothermal water entering the evaporator inlet of the heat pump unit heated by the insulated water tank, includes: When the current season information indicates that it is the heating season, the heat pump unit is controlled to be in operation. When the water temperature in the insulated water tank is lower than a first threshold, the first valve is closed and the second valve is opened to utilize the medium-deep geothermal heat absorbed by the medium-deep geothermal heat exchanger to heat the ground source water entering the evaporator inlet of the heat pump unit, thereby providing heating to the heating user side through the heat pump unit; or... When the water temperature in the insulated water tank is greater than or equal to the first threshold, the first valve is opened and the second valve is closed, so that the geothermal water heated by the medium-deep geothermal heat exchanger and the insulated water tank enters the evaporator inlet of the heat pump unit and provides heating to the heating user side through the heat pump unit. In extreme weather conditions, geothermal return water is used to heat the insulated water tank through the first pipeline.

2. The method according to claim 1, characterized in that, The step of controlling the first valve, the second valve, and the heat pump unit based on the current seasonal information and the water temperature of the insulated water tank, to utilize the medium-deep geothermal heat absorbed by the medium-deep geothermal heat exchanger and / or the geothermal water entering the evaporator inlet of the heat pump unit heated by the insulated water tank, includes: When the current season information is non-heating season, the heat pump unit is controlled to be in a non-operating state; When the water temperature in the insulated water tank is greater than or equal to the second threshold, the first valve is opened and the second valve is closed, so as to use the insulated water tank to heat the ground source water entering the evaporator inlet of the heat pump unit to supplement the ground temperature.

3. The method according to claim 1, characterized in that, The method further includes: The solar thermoelectric integrated module generates electricity to power the heat pump unit, and the remaining electricity generated by the solar thermoelectric integrated module is supplied to the power grid.

4. A control device for a medium-deep ground source heat pump and solar thermoelectric integrated coupling system, characterized in that, A medium-deep ground source heat pump and solar thermal power integrated coupling system includes: Solar thermoelectric integrated modules are used for photovoltaic power generation; A heat pump unit is connected to a solar thermoelectric integrated module, wherein the solar thermoelectric integrated module provides electrical energy to the heat pump unit, the condenser inlet of the heat pump unit is connected to the outlet on the heating user's side, and the condenser outlet of the heat pump unit is connected to the inlet on the heating user's side. An insulated water tank is connected to the solar thermal power integrated module and is used to recover the waste heat generated by the solar thermal power integrated module during photovoltaic power generation. The ground source water outlet of the insulated water tank is connected to the evaporator inlet of the heat pump unit. A medium-deep geothermal heat exchanger is used to absorb medium-deep geothermal energy. The outlet of the medium-deep geothermal heat exchanger is connected to the ground source water inlet of the insulated water tank through a first pipe, and a first valve is provided on the first pipe. The outlet of the medium-deep geothermal heat exchanger is connected to the evaporator inlet of the heat pump unit through a second pipe, and a second valve is provided on the second pipe. The inlet of the medium-deep geothermal heat exchanger is connected to the outlet of the evaporator of the heat pump unit. The control device includes: The determination module is used to determine the current season information and the water temperature of the insulated water tank; The control module is used to control the first valve, the second valve and the heat pump unit according to the current season information and the water temperature of the insulated water tank, so as to utilize the medium-deep geothermal heat absorbed by the medium-deep geothermal heat exchanger and / or the geothermal water entering the evaporator inlet of the heat pump unit to heat the ground source water entering the heat pump unit. The control module is specifically used for: When the current season information indicates it is the heating season, control the operation of the heat pump unit; When the water temperature in the insulated water tank is lower than a first threshold, the first valve is closed and the second valve is opened, so that the geothermal water drawn by the medium-deep geothermal heat exchanger heats the ground source water entering the evaporator inlet of the heat pump unit, and the heat pump unit provides heating to the heating user side; or... When the water temperature in the insulated water tank is greater than or equal to the first threshold, the first valve is opened and the second valve is closed, so that the geothermal water heated by the medium-deep geothermal heat exchanger and the insulated water tank enters the evaporator inlet of the heat pump unit and provides heating to the heating user side through the heat pump unit. In extreme weather conditions, geothermal return water is used to heat the insulated water tank through the first pipeline.

5. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method as described in any one of claims 1-3.

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