Building heating method, device and equipment based on photovoltaic coupling architecture and medium

Abstract

The invention relates to the technical field of building heating, and provides a building heating method, device and equipment based on a photovoltaic coupling architecture and a medium, the method is applied to the photovoltaic coupling architecture, and the photovoltaic coupling architecture comprises a photovoltaic array, a heat pump system, a hot water storage tank, a heat exchange pipeline system and a building heating terminal. By implementing the embodiment of the invention, the first hot water quantity of the hot water storage tank in the previous preset period is compared with the second hot water quantity required by the building heating terminal in the current preset period to obtain a comparison result; and a heat supply path is determined according to different comparison results, so that hot water supply to the building heating terminal by utilizing the photovoltaic array, the heat pump system, the hot water storage tank and the heat exchange pipeline system is realized based on the heat supply path, and energy decoupling and dynamic coordination among the photovoltaic array, the heat pump system and the hot water storage tank are achieved. The problem of unstable operation of a heat pump system caused by photovoltaic power generation volatility is effectively relieved, and continuous hot water supply and heating stability in a building are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of building heating, and in particular to a building heating method, device, equipment and medium based on a photovoltaic coupling architecture. Background Art

[0002] Current building heating solutions typically require a stable supply of hot water at approximately 50°C-70°C to maintain a comfortable indoor temperature. Traditional heating methods rely heavily on fossil fuels, such as natural gas boilers and electric heating equipment, resulting in high energy costs and significant carbon emissions. To address the need for low-carbon and energy-saving development, an increasing number of building systems are adopting photovoltaic power generation technology, leveraging clean energy to power buildings.

[0003] However, photovoltaic power is typically intermittent and volatile, and its output power is unstable due to environmental factors such as weather and time of day. In this context, while using photovoltaic power to drive heat pumps to produce hot water is a highly efficient clean energy coupling method, the high volatility of photovoltaic power directly affects the continuity and efficiency of heat pump operation, leading to fluctuations in hot water output, making it impossible to meet the building's continuous demand for constant hot water at a temperature of 50°C-70°C, thereby affecting the stable operation of the heating system.

[0004] Therefore, the existing technology still has the following major problems: there is a lack of a method that can fully utilize photovoltaic power generation resources and overcome its intermittent characteristics to ensure the stable heat production of the heat pump system and the continuity of building heating. Summary of the Invention

[0005] The embodiments of the present invention provide a building heating method, device, equipment and medium based on a photovoltaic coupling architecture, which aims to solve the problem that existing building heating methods lack the ability to fully utilize photovoltaic power generation resources, overcome their intermittent characteristics and ensure the stable heat production of the heat pump system and the continuity of building heating.

[0006] In a first aspect, an embodiment of the present invention provides a building heating method based on a photovoltaic coupling architecture, which is applied to the photovoltaic coupling architecture. The photovoltaic coupling architecture includes a photovoltaic array, a heat pump system, a hot water storage tank, a heat exchange piping system, and a building heating terminal. The photovoltaic array is connected to the heat pump system, which is connected to the hot water storage tank. The heat pump system and the hot water storage tank are respectively connected to the building heating terminal via the heat exchange piping system. The building heating method based on the photovoltaic coupling architecture includes: In response to a hot water supply instruction, obtaining a first amount of hot water in the hot water storage tank in a previous preset cycle and a second amount of hot water required by the building heating terminal in a current preset cycle; Comparing the first amount of hot water and the second amount of hot water to obtain a comparison result; Performing a judgment process based on the comparison result to obtain a heating path; Based on the heating path, hot water is supplied to the building heating terminal by utilizing the photovoltaic array, the heat pump system, the hot water storage tank, and the heat exchange pipeline system.

[0007] In a second aspect, an embodiment of the present invention further provides a building heating device based on a photovoltaic coupling architecture, which is applied to the photovoltaic coupling architecture. The photovoltaic coupling architecture includes a photovoltaic array, a heat pump system, a hot water storage tank, a heat exchange piping system, and a building heating terminal. The photovoltaic array is connected to the heat pump system, which is connected to the hot water storage tank. The heat pump system and the hot water storage tank are respectively connected to the building heating terminal via the heat exchange piping system. The building heating device based on the photovoltaic coupling architecture includes: an acquiring unit, configured to acquire, in response to a hot water supply instruction, a first amount of hot water in the hot water storage tank in a previous preset period and a second amount of hot water required by the building heating terminal in a current preset period; a comparing unit, configured to compare the first amount of hot water with the second amount of hot water to obtain a comparison result; A judgment unit, configured to determine a heating path based on the comparison result; A supply unit is used to supply hot water to the building heating terminal based on the heating path by utilizing the photovoltaic array, the heat pump system, the hot water storage tank, and the heat exchange pipeline system.

[0008] In a third aspect, an embodiment of the present invention further provides an electronic device, which includes a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the method described in the first aspect is implemented.

[0009] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, wherein the storage medium stores a computer program, wherein the computer program includes program instructions, and when the program instructions are executed by a processor, the method described in the first aspect can be implemented.

[0010] The application provides a building heating method based on a photovoltaic coupling architecture, a device, equipment and a medium. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0012] Figure 1 The flowchart of the building heating method based on the photovoltaic coupling architecture provided by the embodiment of the present application; Figure 2 The schematic block diagram of the photovoltaic coupling architecture provided by the embodiment of the present application; Figure 3 The schematic block diagram of the heat pump system in the photovoltaic coupling architecture provided by the embodiment of the present application; Figure 4 The schematic block diagram of the building heating device based on the photovoltaic coupling architecture provided by the embodiment of the present application; Figure 5 The schematic block diagram of the electronic device provided by the embodiment of the present application; Among them, each sign, as follows: 1. Photovoltaic coupling architecture; 10. Photovoltaic array; 20. Heat pump system; 21. Air source heat pump; 22. Screw heat pump; 23. Control valve; 24. Heat pump return pump; 25. Evaporator; 26. Refrigerant compressor; 27. Refrigerant throttling device; 28. Condenser; 30. Hot water storage tank; 40. Heat exchange piping system; 50. Building heating terminal; 60. Power grid; 70. Building electricity load. DETAILED DESCRIPTION

[0013] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0014] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0015] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the present invention. As used in the specification and appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0016] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0017] See also Figures 1 to 3 , Figure 1 A schematic diagram of a flow chart of a building heating method based on a photovoltaic coupling architecture provided in an embodiment of the present invention; Figure 2 A schematic block diagram of a photovoltaic coupling architecture provided by an embodiment of the present invention; Figure 3This is a schematic block diagram of a heat pump system in a photovoltaic coupling architecture provided by an embodiment of the present invention. The building heating method based on the photovoltaic coupling architecture is applied to a photovoltaic coupling architecture 1, wherein the photovoltaic coupling architecture 1 includes a photovoltaic array 10, a heat pump system 20, a hot water storage tank 30, a heat exchange piping system 40, and a building heating terminal 50. The photovoltaic array 10 is connected to the heat pump system 20, which is connected to the hot water storage tank 30. The heat pump system 20 and the hot water storage tank 30 are respectively connected to the building heating terminal 50 via the heat exchange piping system 40. Figure 1 As shown, the method includes the following steps S110-S140.

[0018] S110. In response to a hot water supply instruction, obtain a first amount of hot water in the hot water storage tank in a previous preset cycle and a second amount of hot water required by the building heating terminal in a current preset cycle.

[0019] In this embodiment, the hot water supply instruction can be issued by the user through a switch button or other methods such as timed sending; the previous preset cycle and the current preset cycle both take the preset cycle as an operating cycle; the preset cycle can be 24 hours a day (1:00 to 24:00), the previous preset cycle can be expressed as the N-1th day, the current preset cycle can be expressed as the Nth day, and the next preset cycle can be expressed as the N+1th day.

[0020] Among them, the photovoltaic array 10 can be installed on the roof of a building or other available areas to convert solar energy into electrical energy and provide green and clean electricity for the building; the heat pump system 20 can operate when there is sufficient photovoltaic power, and utilize the low-grade thermal energy in the ambient air with high efficiency to produce hot water for heating the building; the hot water storage tank 30 can be used to store 50℃-70℃ hot water generated by the heat pump, playing a role in thermal energy buffering, and adjusting the time difference and load fluctuation of the heating system; the heat exchange pipeline system 40 is the internal heat exchange terminal of the building, which transports the hot water from the outlet of the hot water storage tank 30 or the heat pump system 20 to the heating terminal inside the building, such as the floor heating network, radiator, etc., to achieve effective heat release and indoor heating; the building heating terminal 50 can be a floor heating network, radiator, radiator or fan coil, etc.

[0021] This solution is suitable for public buildings such as office buildings, hospitals, schools, and shopping malls, and is particularly suitable for scenarios with large roof areas for installing photovoltaic arrays 10. It is also suitable for distributed heating and clean energy replacement of coal-fired boilers in rural residences, farms, or low-rise urban residences, promoting the use of green energy in rural areas. At the same time, it is particularly suitable for low-carbon parks, demonstration areas, and near-zero energy consumption building projects with high requirements for carbon emission control. It is also used in system integration scenarios such as photovoltaic storage direct flexible heating units and integrated smart energy stations.

[0022] S120: Compare the first hot water volume and the second hot water volume to obtain a comparison result.

[0023] In this embodiment, the first amount of hot water is the amount of hot water stored in the hot water storage tank 30 in the previous preset period; the second amount of hot water is the amount of hot water required by the building heating terminal 50 in the current preset period.

[0024] The first hot water amount and the second hot water amount are compared to obtain the comparison result, wherein the comparison result includes two results: the first hot water amount is less than the second hot water amount; and the first hot water amount is greater than or equal to the second hot water amount.

[0025] S130: Perform judgment processing based on the comparison result to obtain a heating path.

[0026] In this embodiment, after obtaining the comparison result, a judgment process can be performed based on the comparison result to obtain the heating path.

[0027] In one embodiment, determining and processing the heating path based on the comparison result includes: If the comparison result shows that the first hot water amount is less than the second hot water amount, the heating path is the first heating path; If the comparison result shows that the first hot water amount is greater than or equal to the second hot water amount, the heating path is the second heating path.

[0028] In this embodiment, when the comparison result is that the first hot water amount is less than the second hot water amount, the heating path is the first heating path; when the comparison result is that the first hot water amount is greater than or equal to the second hot water amount, the heating path is the second heating path.

[0029] Therefore, the first hot water amount and the second hot water amount are compared to obtain a comparison result, and the heating path is obtained by judgment processing based on the comparison result, that is, the heating path is determined according to different comparison results, thereby ensuring the accuracy of the processing and improving the stability of subsequent supply.

[0030] S140: Based on the heating path, hot water is supplied to the building heating terminal by utilizing the photovoltaic array, the heat pump system, the hot water storage tank, and the heat exchange piping system.

[0031] In this embodiment, after obtaining the heating path, hot water supply to the building heating terminal 50 can be achieved based on the heating path by utilizing the photovoltaic array 10, the heat pump system 20, the hot water storage tank 30, and the heat exchange pipe system 40.

[0032] In one embodiment, the method of supplying hot water to the building heating terminal based on the heating path by using the photovoltaic array, the heat pump system, the hot water storage tank, and the heat exchange piping system includes: When the heating path is the first heating path, the first amount of hot water in the hot water storage tank is activated to supply the building heating terminal through the heat exchange pipe system, and the first remaining amount of hot water is supplemented by the third amount of hot water produced by the heat pump system driven by the electricity of the photovoltaic array; wherein the first remaining amount of hot water is the difference between the second amount of hot water and the first amount of hot water; If the third amount of hot water is less than the first remaining amount of hot water, the power grid of the photovoltaic coupling architecture is used to continue driving the heat pump system to generate hot water for replenishment.

[0033] In this embodiment, when the first amount of hot water is less than the second amount of hot water, that is, the first amount of hot water stored in the hot water storage tank 30 in the N-1th day cannot reach the second amount of hot water required by the building heating terminal 50 in the Nth day, the heating path adopts the first heating path, first activating the hot water of the first amount of hot water in the hot water storage tank 30 to supply it to the building heating terminal 50 through the heat exchange pipe system 40, and the hot water of the first remaining amount of hot water is supplemented by the hot water of the third amount of hot water produced by the heat pump system 20 driven by the electricity of the photovoltaic array 10; wherein, the first remaining amount of hot water is the difference between the second amount of hot water and the first amount of hot water.

[0034] At the same time, when the third amount of hot water is less than the first remaining amount of hot water, the power grid 60 of the photovoltaic coupling architecture 1 continues to drive the heat pump system 20 to produce hot water to supplement the building heating terminal 50; wherein, the photovoltaic coupling architecture 1 also includes a power grid 60, the power grid 60 is connected to the heat pump system 20, and the power grid 60 is mains electricity, that is, industrial frequency alternating current.

[0035] Therefore, when the first amount of hot water is less than the second amount of hot water, the first amount of hot water stored in the hot water storage tank 30 within the N-1 day is used first, and the hot water in the hot water storage tank 30 is released first to help reduce the heat loss of the hot water storage tank 30; the first remaining amount of hot water is supplemented by the third amount of hot water produced by the heat pump system 20 driven by the electricity of the photovoltaic array 10, and when the third amount of hot water is less than the first remaining amount of hot water, the power grid 60 of the photovoltaic coupling architecture 1 continues to drive the heat pump system 20 to produce hot water supplement. Through the hot water priority scheduling strategy and the multi-source driving mechanism (photovoltaic priority + power grid 60 supplement), the unstable operation problem of the heat pump caused by the volatility of photovoltaic power generation is effectively alleviated, and the continuous supply of hot water and heating stability inside the building are guaranteed.

[0036] In one embodiment, the supply of hot water to the building heating terminal based on the heating path using the photovoltaic array, the heat pump system, the hot water storage tank, and the heat exchange piping system further includes: When the heating path is the second heating path, the second amount of hot water in the hot water storage tank is activated to supply the hot water to the building heating terminal through the heat exchange pipe system, and the second residual hot water is incorporated into the heat pump inlet pipe to recover the waste heat by the heat pump system; wherein, the second residual hot water is the difference between the first amount of hot water and the second amount of hot water.

[0037] In this embodiment, when the first amount of hot water is greater than or equal to the second amount of hot water, that is, the first amount of hot water stored in the hot water storage tank 30 within the N-1 day can reach the second amount of hot water required by the building heating terminal 50 within the N day, the heating path adopts the second heating path, and the hot water of the second amount of hot water in the hot water storage tank 30 is activated to be supplied to the building heating terminal 50 through the heat exchange pipe system 40, and the hot water of the second remaining amount of hot water is incorporated into the heat pump inlet pipe and the waste heat is recovered by the heat pump system 20; wherein, the second remaining amount of hot water is the difference between the first amount of hot water and the second amount of hot water.

[0038] At the same time, the water storage capacity of the hot water storage tank 30 can be adjusted according to the solar radiation conditions in the next few days to cope with the risk of continuous cloudy days.

[0039] Therefore, when the first amount of hot water is greater than or equal to the second amount of hot water, the hot water of the second amount of hot water is directly used to meet the demand, and the hot water of the second remaining amount of hot water can be incorporated into the heat pump inlet pipe to recover waste heat, which can reduce the operating energy consumption of the heat pump system 20; at the same time, the excess photovoltaic power is preferentially used to drive the heat pump to produce heat, and the excess hot water enters the hot water storage tank 30 for storage, maximizing the self-generation and self-use of photovoltaic power generation and reducing the phenomenon of abandoned light due to instantaneous load mismatch.

[0040] In one embodiment, when the heating path is the first heating path, the first amount of hot water in the hot water storage tank is activated to be supplied to the building heating terminal through the heat exchange pipe system, and the first remaining amount of hot water is supplemented by the third amount of hot water produced by the heat pump system driven by the electricity of the photovoltaic array, further comprising: When the fourth amount of hot water is greater than or equal to the second amount of hot water, the photovoltaic array drives the heat pump system to produce hot water and inputs it into the hot water storage tank; wherein the fourth amount of hot water is the sum of the first amount of hot water and the third amount of hot water.

[0041] In this embodiment, when the fourth amount of hot water is greater than or equal to the second amount of hot water, that is, the sum of the first amount of hot water in the hot water storage tank 30 on the N-1 day and the third amount of hot water produced by the heat pump system 20 driven by the electricity of the photovoltaic array 10 on the N day can reach the second amount of hot water required by the building heating terminal 50 on the N day, the photovoltaic array 10 drives the heat pump system 20 to produce hot water and inputs it into the hot water storage tank 30 to achieve advance storage for the N+1 day; wherein, the fourth amount of hot water is the sum of the first amount of hot water and the third amount of hot water.

[0042] Therefore, when the sum of the first amount of hot water in the hot water storage tank 30 on day N-1 and the third amount of hot water produced by the heat pump system 20 driven by the photovoltaic array 10 on day N is greater than or equal to the second amount of hot water required by the building heating terminal 50 on day N, the surplus hot water produced on day N enters the hot water storage tank 30 and serves as the hot water storage resource for day N+1, thereby forming a daily cycle operation mechanism based on photovoltaic output prediction and heat storage feedback, thereby achieving decoupling of hot water production by the photovoltaic array 10 and heating by the building heat load.

[0043] In one embodiment, when the heating path is the first heating path, the first amount of hot water in the hot water storage tank is activated to be supplied to the building heating terminal through the heat exchange pipe system, and the first remaining amount of hot water is supplemented by the third amount of hot water produced by the heat pump system driven by the electricity of the photovoltaic array, further comprising: When the fourth amount of hot water is less than the second amount of hot water, the power grid of the photovoltaic coupling architecture drives the heat pump system to produce hot water.

[0044] In this embodiment, when the fourth amount of hot water is less than the second amount of hot water, that is, the sum of the first amount of hot water in the hot water storage tank 30 in the N-1 day and the third amount of hot water produced by the heat pump system 20 driven by the electricity of the photovoltaic array 10 in the N day cannot reach the second amount of hot water required by the building heating terminal 50 in the N day, the power grid 60 of the photovoltaic coupling architecture 1 drives the heat pump system 20 to produce hot water, and inputs it into the hot water storage tank 30 or directly supplies it to the building heating terminal 50 through the heat exchange pipeline system 40 to ensure the stability of the heating hot water.

[0045] In one embodiment, when the heat supply path is the second heat supply path, the second amount of hot water in the hot water storage tank is activated to be supplied to the building heating terminal through the heat exchange piping system, and the second remaining amount of hot water is incorporated into the heat pump inlet pipe to recover waste heat by the heat pump system, further comprising: The heat pump system is driven by the electricity from the photovoltaic array, and the second surplus hot water is used to produce hot water.

[0046] In this embodiment, when the heating path is the second heating path, the hot water of the second hot water volume in the hot water storage tank 30 is activated to be supplied to the building heating terminal 50 through the heat exchange pipe system 40, and the second residual hot water volume is incorporated into the heat pump inlet pipe to recover the waste heat by the heat pump system 20. The electricity of the photovoltaic array 10 is used to drive the heat pump system 20 to use the hot water of the second residual hot water volume as raw water to produce hot water, so as to reduce heating energy consumption and ensure the stability of heating hot water.

[0047] At the same time, this solution uses daily heat forecasts, the previous day's water storage conditions and photovoltaic output estimates, has independent judgment and scheduling capabilities, and can also dynamically adjust the operating mode according to weather changes and load changes, with good intelligent adaptability; through the optimization of the 30-watt capacity of the hot water storage tank and the priority water release logic, the operating strategy can be pre-adjusted according to future weather forecasts and light intensity trends, appropriately improving heat storage capacity and effectively responding to the risk of insufficient heating caused by continuous cloudy or extreme weather.

[0048] Furthermore, if Figures 2 to 3 As shown, the photovoltaic coupling architecture 1 also includes a building power load 70, and the building power load 70 is connected to the photovoltaic array 10; the building heating method based on the photovoltaic coupling architecture 1 also includes: in response to a hot water production instruction, the power of the photovoltaic array 10 is preferentially used for the building power load 70, and the remaining power of the photovoltaic array 10 is used to drive the heat pump system 20 to operate; the heat pump system 20 includes an air source heat pump 21 and a screw heat pump 22, and the air source heat pump 21 and the screw heat pump 22 are operated in series in a two-stage heat pump mode: the air source heat pump 21 heats the raw water to an intermediate temperature, such as 40°C; the screw heat pump 22 further heats the raw water to 50°C-70°C and then outputs it to the heat exchange pipeline system 40 to provide hot water to the building heating terminal 50, thereby completely replacing gas boiler heating. During the heat generation process of the heat pump system 20, the air-source heat pump 21 preferentially uses the remaining unused hot water in the hot water storage tank 30 on day (N-1) as raw water, reducing initial heating energy consumption. Once the remaining water in the hot water storage tank 30 is fully utilized, cold water from the building's raw water pipeline is used as raw water for heating to produce hot water. The hot water generation command can be issued by the user via a switch button, scheduled transmission, or other methods.

[0049] The method of responding to the hot water production instruction, preferentially utilizing the power of the photovoltaic array for the building electrical load, and utilizing the surplus power of the photovoltaic array to drive the operation of the heat pump system, specifically includes: responding to the hot water production instruction, utilizing the power of the photovoltaic array to supply the building electrical load; obtaining the surplus power of the photovoltaic array, a first amount of hot water in the hot water storage tank in the previous preset cycle, and a second amount of hot water required by the building heating terminal in the current preset cycle, utilizing the surplus power to drive the heat pump system, and utilizing the second surplus hot water amount to produce hot water; wherein the second surplus hot water amount is the difference between the first amount of hot water and the second amount of hot water; when a fourth amount of hot water is greater than or equal to the second amount of hot water, the photovoltaic array drives the heat pump system to produce hot water and inputs it into the hot water storage tank; wherein the fourth amount of hot water is the sum of the first amount of hot water and the third amount of hot water; and when the fourth amount of hot water is less than the second amount of hot water, the power grid of the photovoltaic coupling architecture drives the heat pump system to produce hot water.

[0050] like Figure 3 As shown, the heat pump system 20 includes an air source heat pump 21, a screw heat pump 22, a regulating valve 23, and a heat pump return pump 24; the screw heat pump 22 includes an evaporator 25, a refrigerant compressor 26, a refrigerant throttling device 27, and a condenser 28.

[0051] The heat pump system 20 is composed of two closed loops: a heat pump refrigerant loop (first loop) and a hot water circulation loop (second loop).

[0052] In the heat pump refrigerant circuit, evaporator 25: Outdoor air flows through evaporator 25, where the refrigerant (such as R134a) absorbs low-temperature heat from the air and evaporates. Simultaneously, the air-source heat pump 21 provides 30°C return water, which, after heat exchange, is heated by condenser 28. Refrigerant compressor 26: This refrigerant compresses the evaporated, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous state, increasing its enthalpy. This variable-frequency screw compressor intelligently adjusts the compressor speed based on load, improving energy efficiency. Condenser 28: The high-temperature, high-pressure refrigerant releases heat, heating the water circulating in the water circuit (from 55-60°C to 70°C). This heat release condenses the refrigerant into a high-pressure liquid. Refrigerant throttling device 27: After the high-pressure liquid refrigerant is reduced in pressure by this device, it re-enters evaporator 25, completing the cycle.

[0053] In the hot water circulation loop, the 70°C hot water produced by the heat pump system 20 is delivered to the building heating terminal 50, such as a floor heating system, radiator, or fan coil unit. After the building heating terminal 50 releases heat, the hot water temperature drops to 55-60°C. In the heat pump return section, the 55-60°C hot water is returned to the condenser 28 by the heat pump return pump 24. After being heated by the condenser 28, the temperature is raised back to 70°C, and the cycle continues.

[0054] The heat pump system 20 also includes an air source hot water circulation section. In the air source hot water circulation section, the hot water outlet temperature of the air source heat pump 21 is 40°C and the return water temperature is 30°C; this part may correspond to the air side heat exchanger circuit or serve as an auxiliary water circulation on the evaporation side of the heat pump refrigerant, which helps to stabilize the evaporation pressure and efficiency.

[0055] Specifically, in response to a hot water supply instruction, a first amount of hot water in the hot water storage tank during a previous preset cycle and a second amount of hot water required by the building heating terminal during a current preset cycle are obtained; the first amount of hot water and the second amount of hot water are compared to obtain a comparison result. If the comparison result shows that the first amount of hot water is less than the second amount of hot water, the heating path is the first heating path, the hot water of the first amount in the hot water storage tank is activated to be supplied to the building heating terminal through the heat exchange piping system, and the first remaining amount of hot water is supplemented by the third amount of hot water produced by the heat pump system driven by the electricity of the photovoltaic array; the hot water of the first amount of hot water in the hot water storage tank is activated to be supplied to the building heating terminal through the heat exchange piping system, and the first remaining amount of hot water is supplemented by the third amount of hot water produced by the heat pump system driven by the electricity of the photovoltaic array. If the comparison result shows that the first hot water amount is greater than or equal to the second hot water amount, the heating path is the second heating path, and the hot water of the second hot water amount in the hot water storage tank is activated to be supplied to the building heating terminal through the heat exchange pipe system, and the second residual hot water amount is incorporated into the heat pump inlet pipe to recover the waste heat from the water inlet end of the air source heat pump of the heat pump system; wherein, the second residual hot water amount is the difference between the first hot water amount and the second hot water amount.

[0056] Specifically, in response to a hot water production command, the preferred heat production path is for the air-source heat pump 21 to heat the excess water in the hot water storage tank 30, which is then heated to 50°C-70°C by the screw heat pump 22. Therefore, by integrating the hot water storage tank 30 with the hot water recovery-based operation of the air-source heat pump 21, the heat pump's COP is effectively improved, electricity consumption is reduced, and dependence on the power grid is lessened, contributing to overall energy cost control.

[0057] For example, a factory previously used a natural gas boiler for heating. The required hot water temperature for heating the building was 70°C, and the natural gas boiler operated at 95% efficiency. This consumed approximately 150,000 cubic meters of natural gas annually, with an average annual procurement cost of approximately 780,000 yuan. To reduce energy costs and support the transition to clean energy, the factory implemented the proposed building heating solution based on a photovoltaic-coupled architecture. The improved heating system features the following configuration: a photovoltaic array 10 prioritizes powering the building load, with excess power used to drive a heat pump system 20. The heat pump system 20 utilizes a two-stage heating scheme: an air-source heat pump 21 and a screw heat pump 22. The system's COP is approximately 3.7, with a total heating capacity of 1230 kW, fully covering the building's heat load. A 1450 m³ hot water storage tank 30 is used to store daily excess hot water, enabling intraday load regulation and smoothing out PV output fluctuations. The heat loss rate of the hot water storage tank 30 is calculated at 6% over a 24-hour period, and insulation is provided to reduce long-term heat loss. The operating strategy is daily scheduled according to the proposed "discharge first, production later, prioritizing PV power, and storing excess heat" principle. This solution can completely replace natural gas boiler heating, achieving the goal of clean energy substitution. It balances PV fluctuations with the continuity of heat pump operation, ensuring a stable supply of hot water at a constant temperature of 70°C. This significantly reduces operating costs, improving the energy efficiency and return on investment of the building heating system. Energy statistics are as follows: The heat pump system consumes approximately 290,000 kWh of photovoltaic power annually; supplemented by approximately 130,000 kWh of grid electricity (off-peak electricity), for an annual cost of approximately 70,000 RMB. Compared to the original solution, the annual heating energy cost has been reduced from 780,000 RMB to 70,000 RMB, resulting in an annual savings of 710,000 RMB, representing significant energy savings and economic benefits. This example fully demonstrates the feasibility and cost-effectiveness of this solution in the field of industrial building heating, and it has promising prospects for widespread application.

[0058] In summary, in response to a hot water supply instruction, the embodiment of the present invention obtains a first amount of hot water from the hot water storage tank 30 during a previous preset period and a second amount of hot water required by the building heating terminal 50 during a current preset period; compares the first and second amounts of hot water to obtain a comparison result; determines a heating path based on the comparison result; and supplies hot water to the building heating terminal 50 using the photovoltaic array 10, the heat pump system 20, the hot water storage tank 30, and the heat exchange piping system 40 based on the heating path. Therefore, the embodiment of the present invention determines a heating path based on different comparison results and supplies hot water to the building heating terminal 50 using the photovoltaic array 10, the heat pump system 20, the hot water storage tank 30, and the heat exchange piping system 40 based on the heating path. This achieves energy decoupling and dynamic coordination between the photovoltaic array 10, the heat pump system 20, and the hot water storage tank 30, effectively alleviating unstable operation of the heat pump system 20 caused by photovoltaic power generation fluctuations, and ensuring continuous hot water supply and heating stability within the building.

[0059] See also Figures 2 to 4 , Figure 2 A schematic block diagram of a photovoltaic coupling architecture provided by an embodiment of the present invention; Figure 3 A schematic block diagram of a heat pump system in a photovoltaic coupling architecture provided by an embodiment of the present invention; Figure 4 This is a schematic block diagram of a building heating device based on a photovoltaic coupling architecture provided by an embodiment of the present invention. Figure 4 As shown, corresponding to the above-mentioned building heating method based on photovoltaic coupling architecture, the present invention also provides a building heating device based on photovoltaic coupling architecture, the building heating device based on photovoltaic coupling architecture is applied to photovoltaic coupling architecture 1, the photovoltaic coupling architecture 1 includes a photovoltaic array 10, a heat pump system 20, a hot water storage tank 30, a heat exchange piping system 40 and a building heating terminal 50, the photovoltaic array 10 is connected to the heat pump system 20, the heat pump system 20 is connected to the hot water storage tank 30, the heat pump system 20 and the hot water storage tank 30 are respectively connected to the building heating terminal 50 through the heat exchange piping system 40. Specifically, please refer to Figure 4 The building heating device 700 based on the photovoltaic coupling architecture includes: An acquiring unit 701 is configured to acquire, in response to a hot water supply instruction, a first amount of hot water in the hot water storage tank in a previous preset period and a second amount of hot water required by the building heating terminal in a current preset period; A comparison unit 702 is configured to compare the first hot water volume and the second hot water volume to obtain a comparison result; A judgment unit 703 is configured to perform judgment processing based on the comparison result to obtain a heating path; The supply unit 704 is configured to supply hot water to the building heating terminal based on the heating path by utilizing the photovoltaic array, the heat pump system, the hot water storage tank, and the heat exchange piping system.

[0060] In some embodiments, when executing the step of determining and obtaining the heating path based on the comparison result, the judgment unit 703 is specifically configured to: If the comparison result shows that the first hot water amount is less than the second hot water amount, the heating path is the first heating path; If the comparison result shows that the first hot water amount is greater than or equal to the second hot water amount, the heating path is the second heating path.

[0061] In some embodiments, when executing the processing step of supplying hot water to the building heating terminal by using the photovoltaic array, the heat pump system, the hot water storage tank, and the heat exchange piping system based on the heating path, the supply unit 704 is specifically configured to: when the heat supply path is the first heat supply path, enabling the first amount of hot water in the hot water storage tank to be supplied to the building heating terminal through the heat exchange pipeline system, and a first remaining amount of hot water being supplemented by a third amount of hot water generated by the heat pump system driven by the power of the photovoltaic array; wherein the first remaining amount of hot water is a difference between the second amount of hot water and the first amount of hot water; If the third amount of hot water is less than the first remaining amount of hot water, the power grid of the photovoltaic coupling architecture continues to drive the heat pump system to generate hot water for supplement.

[0062] In some embodiments, the supply unit 704, when performing the process step of implementing the hot water supply to the building heating terminal by the photovoltaic array, the heat pump system, the hot water storage tank, and the heat exchange pipeline system based on the heat supply path, is specifically used for: when the heat supply path is the second heat supply path, enabling the second amount of hot water in the hot water storage tank to be supplied to the building heating terminal through the heat exchange pipeline system, and a second remaining amount of hot water being incorporated into a heat pump water inlet pipe to recover waste heat by the heat pump system; wherein the second remaining amount of hot water is a difference between the first amount of hot water and the second amount of hot water.

[0063] In some embodiments, the supply unit 704, after performing the process step of, when the heat supply path is the first heat supply path, enabling the first amount of hot water in the hot water storage tank to be supplied to the building heating terminal through the heat exchange pipeline system, and a first remaining amount of hot water being supplemented by a third amount of hot water generated by the heat pump system driven by the power of the photovoltaic array, is further used for: when the fourth amount of hot water is greater than or equal to the second amount of hot water, the photovoltaic array drives the heat pump system to generate hot water and input into the hot water storage tank; wherein the fourth amount of hot water is a sum of the first amount of hot water and the third amount of hot water.

[0064] In some embodiments, the supply unit 704, after performing the process step of, when the heat supply path is the first heat supply path, enabling the first amount of hot water in the hot water storage tank to be supplied to the building heating terminal through the heat exchange pipeline system, and a first remaining amount of hot water being supplemented by a third amount of hot water generated by the heat pump system driven by the power of the photovoltaic array, is further used for: when the fourth amount of hot water is less than the second amount of hot water, the power grid of the photovoltaic coupling architecture drives the heat pump system to generate hot water.

[0065] In some embodiments, after executing the step of, when the heating path is the second heating path, activating the second amount of hot water in the hot water storage tank to supply the hot water to the building heating terminal through the heat exchange piping system, and incorporating the second remaining amount of hot water into the heat pump inlet pipe to recover waste heat through the heat pump system, the supply unit 704 is further configured to: The heat pump system is driven by the electricity from the photovoltaic array, and the second surplus hot water is used to produce hot water.

[0066] It should be noted that technical personnel in the relevant field can clearly understand that the specific implementation process of the above-mentioned building heating device based on photovoltaic coupling architecture and each unit can refer to the corresponding description in the aforementioned method embodiment. For the convenience and conciseness of the description, it will not be repeated here.

[0067] The above-mentioned building heating device based on photovoltaic coupling architecture can be implemented in the form of a computer program. The computer program can be used in Figure 5 Runs on the electronic devices shown.

[0068] See also Figure 5 , Figure 5 8 is a schematic block diagram of an electronic device provided by an embodiment of the present invention. The electronic device 800 can be a terminal or a server, wherein the terminal can be an electronic device with communication functions. The server can be a standalone server or a server cluster consisting of multiple servers.

[0069] See Figure 5 The electronic device 800 includes a processor 802 , a memory, and a network interface 805 connected via a system bus 801 , wherein the memory may include a non-volatile storage medium 803 and an internal memory 804 .

[0070] The non-volatile storage medium 803 can store an operating system 8031 ​​and a computer program 8032. The computer program 8032 includes program instructions, which, when executed, can enable the processor 802 to execute a building heating method based on a photovoltaic coupling architecture.

[0071] The processor 802 is used to provide computing and control capabilities to support the operation of the entire electronic device 800.

[0072] The internal memory 804 provides an environment for the operation of the computer program 8032 in the non-volatile storage medium 803. When the computer program 8032 is executed by the processor 802, the processor 802 can execute a building heating method based on a photovoltaic coupling architecture.

[0073] The network interface 805 is used to communicate with other devices over the network. Figure 5 The structure shown in the figure is merely a block diagram of a portion of the structure related to the solution of the present invention, and does not constitute a limitation on the electronic device 800 to which the solution of the present invention is applied. The specific electronic device 800 may include more or fewer components than those shown in the figure, or combine certain components, or have a different component arrangement.

[0074] The processor 802 is configured to execute a computer program 8032 stored in the memory to implement the following steps: In response to a hot water supply instruction, obtaining a first amount of hot water in the hot water storage tank in a previous preset cycle and a second amount of hot water required by the building heating terminal in a current preset cycle; Comparing the first amount of hot water and the second amount of hot water to obtain a comparison result; Performing a judgment process based on the comparison result to obtain a heating path; Based on the heating path, hot water is supplied to the building heating terminal by utilizing the photovoltaic array, the heat pump system, the hot water storage tank, and the heat exchange pipeline system.

[0075] In some embodiments, when the processor 802 implements the step of determining and obtaining a heating path based on the comparison result, the processor 802 is specifically configured to: If the comparison result shows that the first hot water amount is less than the second hot water amount, the heating path is the first heating path; If the comparison result shows that the first hot water amount is greater than or equal to the second hot water amount, the heating path is the second heating path.

[0076] In some embodiments, when the processor 802 implements the processing step of supplying hot water to the building heating terminal using the photovoltaic array, the heat pump system, the hot water storage tank, and the heat exchange piping system based on the heating path, it is specifically configured to: When the heating path is the first heating path, the first amount of hot water in the hot water storage tank is activated to supply the building heating terminal through the heat exchange pipe system, and the first remaining amount of hot water is supplemented by the third amount of hot water produced by the heat pump system driven by the electricity of the photovoltaic array; wherein the first remaining amount of hot water is the difference between the second amount of hot water and the first amount of hot water; If the third amount of hot water is less than the first remaining amount of hot water, the power grid of the photovoltaic coupling architecture is used to continue driving the heat pump system to generate hot water for replenishment.

[0077] In some embodiments, the processor 802, in implementing the process step of enabling the first amount of hot water in the hot water storage tank to be supplied to the building heating terminal through the heat exchange pipeline system when the heating path is the first heating path, and the first remaining amount of hot water being supplemented by a third amount of hot water output by the heat pump system driven by the power of the photovoltaic array, is further configured to: when the heating path is the second heating path, enabling the second amount of hot water in the hot water storage tank to be supplied to the building heating terminal through the heat exchange pipeline system, and incorporating a second remaining amount of hot water into a heat pump water inlet pipe for recovering waste heat by the heat pump system; wherein the second remaining amount of hot water is a difference between the first amount of hot water and the second amount of hot water.

[0078] In some embodiments, the processor 802, in implementing the process step of enabling the first amount of hot water in the hot water storage tank to be supplied to the building heating terminal through the heat exchange pipeline system when the heating path is the first heating path, and the first remaining amount of hot water being supplemented by a third amount of hot water output by the heat pump system driven by the power of the photovoltaic array, is further configured to: when the fourth amount of hot water is greater than or equal to the second amount of hot water, the photovoltaic array driving the heat pump system to output hot water and input into the hot water storage tank; wherein the fourth amount of hot water is a sum of the first amount of hot water and the third amount of hot water.

[0079] In some embodiments, the processor 802, in implementing the process step of enabling the first amount of hot water in the hot water storage tank to be supplied to the building heating terminal through the heat exchange pipeline system when the heating path is the first heating path, and the first remaining amount of hot water being supplemented by a third amount of hot water output by the heat pump system driven by the power of the photovoltaic array, is further configured to: when the fourth amount of hot water is less than the second amount of hot water, the power grid of the photovoltaic coupling architecture driving the heat pump system to output hot water.

[0080] In some embodiments, the processor 802, in implementing the process step of enabling the first amount of hot water in the hot water storage tank to be supplied to the building heating terminal through the heat exchange pipeline system when the heating path is the first heating path, and the first remaining amount of hot water being supplemented by a third amount of hot water output by the heat pump system driven by the power of the photovoltaic array, is further configured to: driving the heat pump system by the power of the photovoltaic array, and outputting hot water by the second remaining amount of hot water.

[0081] It should be understood that in the embodiment of the present invention, the processor 802 may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0082] Those skilled in the art will appreciate that all or part of the steps in the method of the above-described embodiment can be implemented by instructing the relevant hardware through a computer program. The computer program includes program instructions, which can be stored in a storage medium that is computer-readable. The program instructions are executed by at least one processor in the computer system to implement the steps in the method of the above-described embodiment.

[0083] Therefore, the present invention also provides a storage medium. The storage medium may be a computer-readable storage medium. The storage medium stores a computer program, wherein the computer program includes program instructions. When the program instructions are executed by a processor, the processor performs the following steps: In response to a hot water supply instruction, obtaining a first amount of hot water in the hot water storage tank in a previous preset cycle and a second amount of hot water required by the building heating terminal in a current preset cycle; Comparing the first amount of hot water and the second amount of hot water to obtain a comparison result; Performing a judgment process based on the comparison result to obtain a heating path; Based on the heating path, hot water is supplied to the building heating terminal by utilizing the photovoltaic array, the heat pump system, the hot water storage tank, and the heat exchange pipeline system.

[0084] In one embodiment, when the processor executes the program instructions to implement the step of determining and obtaining the heating path based on the comparison result, the processor is specifically configured to: If the comparison result shows that the first hot water amount is less than the second hot water amount, the heating path is the first heating path; If the comparison result shows that the first hot water amount is greater than or equal to the second hot water amount, the heating path is the second heating path.

[0085] In an embodiment, the processor, when executing the program instructions to implement the process of supplying hot water to the building heating terminal by the photovoltaic array, the heat pump system, the hot water storage tank and the heat exchange pipeline system based on the heating path, is specifically configured to: when the heating path is the first heating path, enabling the first amount of hot water in the hot water storage tank to be supplied to the building heating terminal through the heat exchange pipeline system, and a first remaining amount of hot water being supplemented by a third amount of hot water generated by the heat pump system driven by the power of the photovoltaic array; wherein the first remaining amount of hot water is the difference between the second amount of hot water and the first amount of hot water; if the third amount of hot water is less than the first remaining amount of hot water, the power grid of the photovoltaic coupling architecture continues to drive the heat pump system to generate hot water for supplementation.

[0086] In an embodiment, the processor, when executing the program instructions to implement the process of supplying hot water to the building heating terminal by the photovoltaic array, the heat pump system, the hot water storage tank and the heat exchange pipeline system based on the heating path, is further specifically configured to: when the heating path is the second heating path, enabling the second amount of hot water in the hot water storage tank to be supplied to the building heating terminal through the heat exchange pipeline system, and a second remaining amount of hot water being incorporated into the heat pump water inlet pipe to recover waste heat by the heat pump system; wherein the second remaining amount of hot water is the difference between the first amount of hot water and the second amount of hot water.

[0087] In an embodiment, the processor, after executing the program instructions to implement the process of, when the heating path is the first heating path, enabling the first amount of hot water in the hot water storage tank to be supplied to the building heating terminal through the heat exchange pipeline system, and a first remaining amount of hot water being supplemented by a third amount of hot water generated by the heat pump system driven by the power of the photovoltaic array, is further configured to: when a fourth amount of hot water is greater than or equal to the second amount of hot water, the photovoltaic array drives the heat pump system to generate hot water and input into the hot water storage tank; wherein the fourth amount of hot water is the sum of the first amount of hot water and the third amount of hot water.

[0088] In an embodiment, the processor, after executing the program instructions to implement the process of, when the heating path is the first heating path, enabling the first amount of hot water in the hot water storage tank to be supplied to the building heating terminal through the heat exchange pipeline system, and a first remaining amount of hot water being supplemented by a third amount of hot water generated by the heat pump system driven by the power of the photovoltaic array, is further configured to: When the fourth hot water amount is less than the second hot water amount, the power grid of the photovoltaic coupling architecture drives the heat pump system to output hot water.

[0089] In an embodiment, the processor, when executing the program instructions, to implement the step of enabling the second hot water amount of hot water in the heat storage water tank to be supplied to the building heating terminal through the heat exchange pipeline system and incorporating the second residual hot water amount into a heat pump water inlet pipe to recover waste heat by the heat pump system when the heat supply path is a second heat supply path, is further configured to: drive the heat pump system by using the power of the photovoltaic array, and output hot water by using the second residual hot water amount.

[0090] The storage medium can be a U disk, a mobile hard disk, a read-only memory (ROM), a magnetic disk or an optical disk, and various computer readable storage media that can store program codes.

[0091] Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be realized in electronic hardware, computer software or a combination of both. In order to clearly illustrate the interchangeability of hardware and software, the components and steps of the examples have been described in general terms in the above description. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. A person skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0092] In several embodiments provided by the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of each unit is only a logical function division, and actual implementation can have another division manner. For example, a plurality of units or components can be combined or integrated into another system, or some features can be omitted or not implemented.

[0093] The steps in the method embodiments of the present application can be adjusted, combined and deleted in sequence according to actual needs. The units in the device embodiments of the present application can be combined, divided and deleted according to actual needs. In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit.

[0094] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a storage medium. Based on such an understanding, the technical solutions of the present application essentially or say the part that contributes to the prior art, or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing an electronic device (which can be a personal computer, a terminal, or a network device, etc.) to execute all or part of the steps of the method described in the various embodiments of the present application.

[0095] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A building heating method based on a photovoltaic coupling architecture, characterized in that: Applied to a photovoltaic coupling architecture, the photovoltaic coupling architecture includes a photovoltaic array, a heat pump system, a hot water storage tank, a heat exchange piping system, and a building heating terminal. The photovoltaic array is connected to the heat pump system, the heat pump system is connected to the hot water storage tank, and the heat pump system and the hot water storage tank are respectively connected to the building heating terminal via the heat exchange piping system. The building heating method based on the photovoltaic coupling architecture includes: In response to a hot water supply instruction, obtaining a first amount of hot water in the hot water storage tank in a previous preset cycle and a second amount of hot water required by the building heating terminal in a current preset cycle; Comparing the first amount of hot water and the second amount of hot water to obtain a comparison result; Performing a judgment process based on the comparison result to obtain a heating path; Based on the heating path, hot water is supplied to the building heating terminal by utilizing the photovoltaic array, the heat pump system, the hot water storage tank, and the heat exchange pipeline system.

2. The building heating method based on photovoltaic coupling architecture according to claim 1, characterized in that: The determining and processing according to the comparison result to obtain the heating path includes: If the comparison result shows that the first hot water amount is less than the second hot water amount, the heating path is the first heating path; If the comparison result shows that the first hot water amount is greater than or equal to the second hot water amount, the heating path is the second heating path.

3. The building heating method based on photovoltaic coupling architecture according to claim 2, characterized in that: The method of supplying hot water to the building heating terminal based on the heating path by utilizing the photovoltaic array, the heat pump system, the hot water storage tank, and the heat exchange piping system includes: When the heating path is the first heating path, the first amount of hot water in the hot water storage tank is activated to supply the building heating terminal through the heat exchange pipe system, and the first remaining amount of hot water is supplemented by the third amount of hot water produced by the heat pump system driven by the electricity of the photovoltaic array; wherein the first remaining amount of hot water is the difference between the second amount of hot water and the first amount of hot water; If the third amount of hot water is less than the first remaining amount of hot water, the power grid of the photovoltaic coupling architecture is used to continue driving the heat pump system to generate hot water for replenishment.

4. The building heating method based on photovoltaic coupling architecture according to claim 2, characterized in that: The method of supplying hot water to the building heating terminal based on the heating path by utilizing the photovoltaic array, the heat pump system, the hot water storage tank, and the heat exchange piping system further includes: When the heating path is the second heating path, the second amount of hot water in the hot water storage tank is activated to supply the hot water to the building heating terminal through the heat exchange pipe system, and the second residual hot water is incorporated into the heat pump inlet pipe to recover the waste heat by the heat pump system; wherein, the second residual hot water is the difference between the first amount of hot water and the second amount of hot water.

5. The building heating method based on photovoltaic coupling architecture according to claim 3, characterized in that: When the heating path is the first heating path, the first amount of hot water in the hot water storage tank is activated to supply the first amount of hot water to the building heating terminal through the heat exchange pipe system, and the first remaining amount of hot water is supplemented by the third amount of hot water produced by the heat pump system driven by the power of the photovoltaic array, further comprising: When the fourth amount of hot water is greater than or equal to the second amount of hot water, the photovoltaic array drives the heat pump system to produce hot water and inputs it into the hot water storage tank; wherein the fourth amount of hot water is the sum of the first amount of hot water and the third amount of hot water.

6. The building heating method based on photovoltaic coupling architecture according to claim 5, characterized in that: When the heating path is the first heating path, the first amount of hot water in the hot water storage tank is activated to supply the first amount of hot water to the building heating terminal through the heat exchange pipe system, and the first remaining amount of hot water is supplemented by the third amount of hot water produced by the heat pump system driven by the power of the photovoltaic array, further comprising: When the fourth amount of hot water is less than the second amount of hot water, the power grid of the photovoltaic coupling architecture drives the heat pump system to produce hot water.

7. The building heating method based on photovoltaic coupling architecture according to claim 4, characterized in that: When the heating path is the second heating path, the second amount of hot water in the hot water storage tank is activated to supply the hot water to the building heating terminal through the heat exchange pipe system, and the second remaining hot water is incorporated into the heat pump inlet pipe to recover waste heat by the heat pump system, further comprising: The heat pump system is driven by the electricity from the photovoltaic array, and the second surplus hot water is used to produce hot water.

8. A building heating device based on a photovoltaic coupling architecture, characterized in that: Applied to a photovoltaic coupling architecture, the photovoltaic coupling architecture includes a photovoltaic array, a heat pump system, a hot water storage tank, a heat exchange piping system, and a building heating terminal. The photovoltaic array is connected to the heat pump system, the heat pump system is connected to the hot water storage tank, and the heat pump system and the hot water storage tank are respectively connected to the building heating terminal via the heat exchange piping system. The building heating device based on the photovoltaic coupling architecture includes: an acquiring unit, configured to acquire, in response to a hot water supply instruction, a first amount of hot water in the hot water storage tank in a previous preset period and a second amount of hot water required by the building heating terminal in a current preset period; a comparing unit, configured to compare the first amount of hot water with the second amount of hot water to obtain a comparison result; A judgment unit, configured to determine a heating path based on the comparison result; A supply unit is used to supply hot water to the building heating terminal based on the heating path by utilizing the photovoltaic array, the heat pump system, the hot water storage tank, and the heat exchange pipeline system.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the building heating method based on the photovoltaic coupling architecture according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that The storage medium stores a computer program, which includes program instructions. When the program instructions are executed by a processor, the processor executes the building heating method based on the photovoltaic coupling architecture according to any one of claims 1 to 7.

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