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

Abstract

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

Description

TECHNICAL FIELD

[0001] The present application 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

[0002] Currently, in the building heating technical scheme, it is usually necessary to stably supply hot water of about 50-70 DEG C to guarantee the comfort of indoor temperature. The traditional heating mode depends on fossil energy, such as natural gas boiler, electric heating equipment, etc., which has high energy cost and serious carbon emission. In response to the development requirement of low-carbon and energy-saving, more and more building systems begin to use photovoltaic power generation technology to provide power support for buildings with clean energy.

[0003] However, photovoltaic power has typical intermittent and fluctuating characteristics, and its output power is unstable due to environmental factors such as weather and time period. Under this background, although using photovoltaic power generation to drive a heat pump to produce hot water is an efficient clean energy coupling method, due to the large fluctuation of photovoltaic power, it will directly affect the continuity and efficiency of the heat pump operation, resulting in fluctuation of hot water output, which cannot meet the continuous demand of the building for 50-70 DEG C constant temperature hot water, thereby affecting the stable operation of the heating system.

[0004] Therefore, the existing technology still has the following main problems: there is a lack of a method that can fully utilize photovoltaic power generation resources while overcoming the intermittent characteristics to guarantee the stable heat production of the heat pump system and the continuity of building heating. SUMMARY

[0005] The embodiments of the present application provide a building heating method, device, equipment and medium based on a photovoltaic coupling architecture, aiming to solve the problem that the existing building heating method lacks a method that can fully utilize photovoltaic power generation resources while overcoming the intermittent characteristics to guarantee the stable heat production of the heat pump system and the continuity of building heating.

[0006] In a first aspect, the embodiments of the present application provide a building heating method based on a photovoltaic coupling architecture, applied to a photovoltaic coupling architecture, the photovoltaic coupling architecture comprising a photovoltaic array, a heat pump system, a hot water storage tank, a heat exchange pipeline system and a building heating terminal, the photovoltaic array being connected with the heat pump system, the heat pump system being connected with the hot water storage tank, the heat pump system and the hot water storage tank being connected with the building heating terminal through the heat exchange pipeline system respectively; the building heating method based on the photovoltaic coupling architecture comprises:

[0007] In response to a hot water supply instruction, a first hot water amount of the hot water storage tank in a previous preset period and a second hot water amount required by the building heating terminal in a current preset period are obtained;

[0008] The first hot water amount and the second hot water amount are compared to obtain a comparison result;

[0009] A heating path is determined according to the comparison result;

[0010] Based on the heating path, hot water is supplied to the building heating terminal by using the photovoltaic array, the heat pump system, the hot water storage tank and the heat exchange pipeline system.

[0011] In a second aspect, the embodiment of the present application further provides a building heating device based on a photovoltaic coupling architecture, which 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, the photovoltaic array is connected with the heat pump system, the heat pump system is connected with the hot water storage tank, and the heat pump system and the hot water storage tank are connected with the building heating terminal through the heat exchange pipeline system respectively; the building heating device based on the photovoltaic coupling architecture comprises:

[0012] An acquisition unit is configured to acquire a first hot water amount of the hot water storage tank in a previous preset period and a second hot water amount required by the building heating terminal in a current preset period in response to a hot water supply instruction;

[0013] A comparison unit is configured to compare the first hot water amount and the second hot water amount to obtain a comparison result;

[0014] A determination unit is configured to determine a heating path according to the comparison result;

[0015] A supply unit is configured to supply 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 pipeline system based on the heating path.

[0016] In a third aspect, the embodiment of the present application further provides an electronic device, which comprises a memory and a processor, the memory stores a computer program, and the processor executes the computer program to realize the method in the first aspect.

[0017] In a fourth aspect, the embodiment of the present application further provides a computer readable storage medium, which stores a computer program, and the computer program comprises program instructions, and the program instructions are executed by a processor to realize the method in the first aspect.

[0018] The application provides a building heating method and device based on a photovoltaic coupling architecture, equipment and a medium, the building heating method based on the photovoltaic coupling architecture is applied to the photovoltaic coupling architecture, the photovoltaic coupling architecture comprises a photovoltaic array, a heat pump system, a heat storage water tank, a heat exchange pipeline system and a building heating terminal; the photovoltaic array is connected with the heat pump system, the heat pump system is connected with the heat storage water tank, and the heat pump system and the heat storage water tank are connected with the building heating terminal through the heat exchange pipeline system respectively; the building heating method based on the photovoltaic coupling architecture comprises the following steps: in response to a hot water supply instruction, a first hot water amount of the heat storage water tank in a previous preset period and a second hot water amount required by the building heating terminal in a current preset period are acquired; the first hot water amount and the second hot water amount are compared to obtain a comparison result; the comparison result is judged to obtain a heating path; and hot water supply to the building heating terminal is realized by using the photovoltaic array, the heat pump system, the heat storage water tank and the heat exchange pipeline system based on the heating path. It can be known that, according to different comparison results, the heating path is determined, hot water supply to the building heating terminal is realized by using the photovoltaic array, the heat pump system, the heat storage water tank and the heat exchange pipeline system based on the heating path, energy decoupling and dynamic coordination among the photovoltaic array, the heat pump system and the heat storage water tank are realized, the problem of unstable operation of the heat pump system caused by photovoltaic power generation volatility is effectively alleviated, and continuous hot water supply and heating stability in a building are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] 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.

[0020] Figure 1 The flowchart of the building heating method based on the photovoltaic coupling architecture provided by the embodiment of the present application is shown.

[0021] Figure 2 The schematic block diagram of the photovoltaic coupling architecture provided by the embodiment of the present application is shown.

[0022] Figure 3 The schematic block diagram of the heat pump system in the photovoltaic coupling architecture provided by the embodiment of the present application is shown.

[0023] 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 is shown.

[0024] Figure 5 The schematic block diagram of the electronic equipment provided by the embodiment of the present application is shown.

[0025] wherein each reference sign denotes the following:

[0026] 1. photovoltaic coupling architecture; 10, photovoltaic array; 20, heat pump system; 21, air source heat pump; 22, screw heat pump; 23, regulating valve; 24, heat pump return water pump; 25, evaporator; 26, refrigerant compressor; 27, refrigerant throttling device; 28, condenser; 30, heat storage tank; 40, heat exchange pipeline system; 50, building heating terminal; 60, power grid; 70, building electricity load. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0028] It should be understood that when used in the specification and the appended claims, the terms "comprise" and "include" indicate the presence of the described features, integers, steps, operations, elements, and / or components, but do not exclude one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0029] It should also be understood that the terms used in the present application specification are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the present application specification and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0030] It should be further understood that the term "and / or" used in the present application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.

[0031] Please refer to Figures 1 to 3 , Figure 1 The flowchart of the building heating method based on the photovoltaic coupling architecture provided by the embodiments of the present application is shown in the figure; Figure 2 The schematic block diagram of the photovoltaic coupling architecture provided by the embodiments of the present application is shown in the figure; Figure 3A schematic block diagram of a heat pump system in a photovoltaic coupling architecture provided by an embodiment of the present application. The building heating method based on the photovoltaic coupling architecture is applied to a photovoltaic coupling architecture 1, which includes a photovoltaic array 10, a heat pump system 20, a heat storage water tank 30, a heat exchange pipeline 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 heat storage water tank 30. The heat pump system 20 and the heat storage water tank 30 are respectively connected to the building heating terminal 50 through the heat exchange pipeline system 40. As shown in Figure 1 the method includes the following steps S110-S140.

[0032] S110, in response to a hot water supply instruction, obtaining a first hot water amount of the heat storage water tank in a previous preset period and a second hot water amount required by the building heating terminal in a current preset period.

[0033] In this embodiment, the hot water supply instruction can be issued by a user through a switch button or other means such as timing sending. The previous preset period and the current preset period are both a preset period as an operation period. The preset period can be 24 hours (1 point to 24 points) in a day. The previous preset period can represent the N-1 day, the current preset period can represent the N day, and the next preset period can represent the N+1 day.

[0034] The photovoltaic array 10 can be installed on the roof of a building or other available area to convert solar energy into electrical energy and provide green clean power for the building. The heat pump system 20 can operate when photovoltaic power is sufficient to utilize low-grade heat energy in the environment air at high efficiency to produce hot water for building heating. The heat storage water tank 30 can be used to store 50-70℃ hot water generated by the heat pump to play a role of heat energy caching and adjust the time difference and load fluctuation of the heating system. The heat exchange pipeline system 40 is a building internal heat exchange terminal, which transports hot water from the outlet of the heat storage water tank 30 or the heat pump system 20 to the heating terminal inside the building, such as a floor heating pipe network, a heating radiator, etc., to realize effective release of heat and indoor heating. The building heating terminal 50 can be a floor heating pipe network, a heating radiator, a radiator, or a fan coil, etc.

[0035] This scheme is applicable to public buildings such as office buildings, hospitals, schools, and shopping malls, especially suitable for scenarios with large roof area to install photovoltaic arrays 10, and also suitable for scenarios of distributed heating and clean energy replacing coal-fired boilers in rural residences or breeding farms or urban low-rise residences, promoting green energy to the countryside. 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 applicable to system integration scenarios such as photovoltaic storage direct flexible heating units and integrated intelligent energy stations.

[0036] S120, compare the first hot water amount and the second hot water amount to obtain a comparison result.

[0037] In this embodiment, the first hot water amount is the amount of hot water stored in the heat storage tank 30 in the last preset period; and the second hot water amount is the amount of hot water required by the building heating terminal 50 in the current preset period.

[0038] The comparison result includes two results that 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.

[0039] S130, judging according to the comparison result to obtain a heat supply path.

[0040] In this embodiment, after obtaining the comparison result, the heat supply path can be obtained by judging according to the comparison result.

[0041] In an embodiment, the judging according to the comparison result to obtain a heat supply path includes:

[0042] If the comparison result is that the first hot water amount is less than the second hot water amount, the heat supply path is a first heat supply path.

[0043] If the comparison result is that the first hot water amount is greater than or equal to the second hot water amount, the heat supply path is a second heat supply path.

[0044] In this embodiment, when the comparison result is that the first hot water amount is less than the second hot water amount, the heat supply path is a first heat supply path; and when the comparison result is that the first hot water amount is greater than or equal to the second hot water amount, the heat supply path is a second heat supply path.

[0045] Therefore, the comparison result is obtained by comparing the first hot water amount and the second hot water amount, and the heat supply path is obtained by judging according to the comparison result, that is, the heat supply path is determined according to different comparison results, which ensures the accuracy of the processing and further improves the stability of the subsequent supply.

[0046] S140, based on the heat supply path, the hot water supply to the building heating terminal by using the photovoltaic array, the heat pump system, the heat storage tank and the heat exchange pipeline system is realized.

[0047] In the embodiment, after the heating supply path is obtained, the photovoltaic array 10, the heat pump system 20, the heat storage tank 30, and the heat exchange pipeline system 40 are utilized to supply hot water to the building heating terminal 50 based on the heating supply path.

[0048] In an embodiment, the utilization of the photovoltaic array, the heat pump system, the heat storage tank, and the heat exchange pipeline system to supply hot water to the building heating terminal based on the heating supply path comprises:

[0049] When the heating supply path is the first heating supply path, the first amount of hot water in the heat storage tank is utilized to supply hot water to the building heating terminal through the heat exchange pipeline system, and the first remaining amount of hot water is supplemented by the 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.

[0050] 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 utilized to continue to drive the heat pump system to generate hot water for supplementation.

[0051] In the embodiment, when the first amount of hot water is less than the second amount of hot water, i.e., the first amount of hot water stored in the heat storage tank 30 on the N-1 day cannot reach the second amount of hot water required by the building heating terminal 50 on the N day, the heating supply path adopts the first heating supply path, the first amount of hot water in the heat storage tank 30 is utilized to supply hot water to the building heating terminal 50 through the heat exchange pipeline system 40, and the first remaining amount of hot water is supplemented by the third amount of hot water generated by the heat pump system 20 driven by the power 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.

[0052] 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 is utilized to continue to drive the heat pump system 20 to generate hot water for supplementation to the building heating terminal 50; wherein the photovoltaic coupling architecture 1 further comprises a power grid 60, the power grid 60 is connected with the heat pump system 20, and the power grid 60 is a commercial power, i.e., a power frequency alternating current.

[0053] Therefore, when the first hot water amount is less than the second hot water amount, the first hot water amount stored in the heat storage water tank 30 in the N-1th day is preferentially used, and the hot water in the heat storage water tank 30 is preferentially discharged, which helps to reduce the heat loss of the heat storage water tank 30; the first remaining hot water amount is supplemented by the third hot water amount generated by the heat pump system 20 driven by the power of the photovoltaic array 10, and when the third hot water amount is less than the first remaining hot water amount, the power grid 60 of the photovoltaic coupling architecture 1 continues to drive the heat pump system 20 to generate hot water, and through the hot water priority scheduling strategy and the multi-source driving mechanism (photovoltaic priority + power grid 60 supplement), the problem of unstable operation of the heat pump caused by the fluctuation of photovoltaic power generation is effectively alleviated, and the continuous supply of hot water and the stability of heating in the building are ensured.

[0054] In an embodiment, the hot water supply to the building heating terminal by the heat supply path based on the photovoltaic array, the heat pump system, the heat storage water tank and the heat exchange pipeline system further comprises:

[0055] When the heat supply path is a second heat supply path, the hot water of the second hot water amount in the heat storage water tank is enabled to be supplied to the building heating terminal through the heat exchange pipeline system, and a second remaining hot water amount is incorporated into the heat pump water inlet pipe to recover waste heat by the heat pump system; wherein the second remaining hot water amount is the difference between the first hot water amount and the second hot water amount.

[0056] In this embodiment, when the first hot water amount is greater than or equal to the second hot water amount, that is, the first hot water amount stored in the heat storage water tank 30 in the N-1th day can reach the second hot water amount required by the building heating terminal 50 in the Nth day, the heat supply path adopts a second heat supply path, the hot water of the second hot water amount in the heat storage water tank 30 is enabled to be supplied to the building heating terminal 50 through the heat exchange pipeline system 40, and the hot water of the second remaining hot water amount is incorporated into the heat pump water inlet pipe to recover waste heat by the heat pump system 20; wherein the second remaining hot water amount is the difference between the first hot water amount and the second hot water amount.

[0057] At the same time, the water storage capacity of the heat storage water tank 30 can also be adjusted according to the solar radiation in the next few days to cope with the risk of continuous overcast days without light.

[0058] Therefore, when the first hot water amount is greater than or equal to the second hot water amount, the hot water of the second hot water amount is directly used to meet the demand, and the hot water of the second remaining hot water amount can be incorporated into the heat pump water 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 power of photovoltaic is preferentially used to drive the heat pump to generate heat, and the excess hot water is stored in the heat storage water tank 30, which maximizes the self-generation and self-use of photovoltaic power generation, and reduces the phenomenon of light abandonment caused by instantaneous load mismatch.

[0059] In an embodiment, when the heating supply path is the first heating supply path, the first amount of hot water in the hot water storage tank is enabled to be supplied to the building heating terminal through the heat exchange pipeline system, and the first remaining amount of hot water is supplemented by a third amount of hot water generated by the heat pump system driven by the power of the photovoltaic array, and then the method further comprises:

[0060] 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 the sum of the first amount of hot water and the third amount of hot water.

[0061] In the embodiment, when the fourth amount of hot water is greater than or equal to the second amount of hot water, that is, the sum between 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 generated by the heat pump system 20 driven by the power of the photovoltaic array 10 in the N day can reach the second amount of hot water required by the building heating terminal 50 in the N day, the photovoltaic array 10 drives the heat pump system 20 to generate hot water and input into the hot water storage tank 30, to realize the 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.

[0062] Therefore, when the sum between 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 generated by the heat pump system 20 driven by the photovoltaic array 10 in the N day is greater than or equal to the second amount of hot water required by the building heating terminal 50 in the N day, the surplus hot water generated in the N day enters the hot water storage tank 30 as a hot water storage resource for the N+1 day, to form a daily cycle operation mechanism based on photovoltaic output prediction and hot water storage feedback, and realize the decoupling of hot water generation by the photovoltaic array 10 and building heat load heating.

[0063] In an embodiment, when the heating supply path is the first heating supply path, the first amount of hot water in the hot water storage tank is enabled to be supplied to the building heating terminal through the heat exchange pipeline system, and the first remaining amount of hot water is supplemented by a third amount of hot water generated by the heat pump system driven by the power of the photovoltaic array, and then the method further comprises:

[0064] 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 the embodiment, when the fourth hot water amount is less than the second hot water amount, i.e., the sum between the first hot water amount of the heat storage water tank 30 in the N-1 day and the third hot water amount generated by the heat pump system 20 driven by the power of the photovoltaic array 10 in the N day cannot reach the second hot water amount 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 generate hot water, and the hot water is input into the heat storage water tank 30 or directly supplied to the building heating terminal 50 through the heat exchange pipeline system 40, so as to ensure the stability of the heating hot water.

[0066] In an embodiment, when the heating path is the second heating path, the hot water of the second hot water amount in the heat storage water tank is enabled to be supplied to the building heating terminal through the heat exchange pipeline system, and the second residual hot water amount is further included in the heat pump water inlet pipe after the heat recovery by the heat pump system.

[0067] The heat pump system is driven by the power of the photovoltaic array, and the hot water is generated by using the second residual hot water amount.

[0068] In the embodiment, when the heating path is the second heating path, the hot water of the second hot water amount in the heat storage water tank 30 is enabled to be supplied to the building heating terminal 50 through the heat exchange pipeline system 40, and the second residual hot water amount is further included in the heat pump water inlet pipe after the heat recovery by the heat pump system 20. The heat pump system 20 is driven by the power of the photovoltaic array 10 to generate hot water by using the hot water of the second residual hot water amount as raw water, so as to reduce the heating energy consumption and ensure the stability of the heating hot water.

[0069] Meanwhile, the scheme has the autonomous judgment and dispatching capability by using the daily heat prediction, the previous day storage water condition and the photovoltaic output estimation, and can dynamically adjust the operation mode according to the weather change and the load change, and has good intelligent adaptive capability. Through the capacity optimization and the priority water discharge logic of the heat storage water tank 30, the operation strategy can be pre-adjusted according to the future weather forecast and the light intensity trend, the heat storage capacity is appropriately improved, and the risk of insufficient heating caused by continuous overcast days or extreme weather is effectively coped with.

[0070] Further, as Figures 2 to 3As shown, the photovoltaic coupling architecture 1 further comprises a building electricity load 70 connected with the photovoltaic array 10; the building heating method based on the photovoltaic coupling architecture 1 further comprises: in response to a hot water output instruction, using the electricity of the photovoltaic array 10 to preferentially supply the building electricity load 70, and using the remaining electricity of the photovoltaic array 10 to drive the heat pump system 20 to operate; the heat pump system 20 comprises 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 operate in a two-stage heat pump series connection mode: the air source heat pump 21 heats raw water to an intermediate temperature, such as 40°C; the screw heat pump 22 further heats to 50-70°C and then outputs to the heat exchange pipeline system 40 to provide hot water to the building heating terminal 50, so as to completely replace the gas boiler heating. In the heat production process of the heat pump system 20, the air source heat pump 21 preferentially uses the remaining unused hot water in the heat storage tank 30 on the N-1 day as raw water, so as to reduce the initial heating energy consumption; when the remaining water in the heat storage tank 30 is completely used, the cold water of the building raw water pipeline is used as raw water to generate hot water. The hot water output instruction can be sent by a user through a switch button or other ways such as timing sending.

[0071] In response to the hot water output instruction, the electricity of the photovoltaic array is used to preferentially supply the building electricity load, and the remaining electricity of the photovoltaic array is used to drive the heat pump system to operate, specifically comprising: in response to the hot water output instruction, the electricity of the photovoltaic array is used to supply the building electricity load; the remaining electricity of the photovoltaic array, the first hot water amount of the heat storage tank in the last preset period, and the second hot water amount required by the building heating terminal in the current preset period are obtained, the remaining electricity is used to drive the heat pump system, and the second remaining hot water amount is used to output hot water; wherein the second remaining hot water amount is the difference between the first hot water amount and the second hot water amount; when the fourth hot water amount is greater than or equal to the second hot water amount, the photovoltaic array drives the heat pump system to output hot water and input into the heat storage tank; wherein the fourth hot water amount is the sum of the first hot water amount and the third hot water amount; 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.

[0072] As shown in Figure 3 The heat pump system 20 comprises an air source heat pump 21, a screw heat pump 22, a regulating valve 23, and a heat pump return water pump 24; the screw heat pump 22 comprises an evaporator 25, a refrigerant compressor 26, a refrigerant throttling device 27, and a condenser 28.

[0073] The heat pump system 20 is composed of a heat pump refrigerant loop (first loop) and a hot water circulation loop (second loop).

[0074] In the heat pump refrigerant circuit, the evaporator 25: the outdoor air flows through the evaporator 25, and the refrigerant (such as R134a) absorbs the low-temperature heat in the air and evaporates here; at the same time, the air source heat pump 21 unit provides 30℃ return water, which is heated by the condenser 28 main machine after heat exchange. The refrigerant compressor 26: the low-pressure gaseous refrigerant after evaporation is compressed into high-temperature and high-pressure gas by the refrigerant compressor 26, and its enthalpy value is improved; the refrigerant compressor 26 adopts a variable frequency screw compressor, which can intelligently adjust the compressor speed according to the load and improve the energy efficiency ratio. The condenser 28: the high-temperature and high-pressure refrigerant releases heat to heat the circulating water in the water circuit (from 55~60℃ to 70℃); the refrigerant is condensed into high-pressure liquid due to heat release. The refrigerant throttling device 27: the high-pressure liquid refrigerant enters the evaporator 25 again after being decompressed by the refrigerant throttling device 27, and completes a cycle.

[0075] In the hot water circulation circuit, the building heating terminal 50: the 70℃ high-temperature hot water produced by the heat pump system 20 is delivered to the building heating terminal 50, such as floor heating, radiator or fan coil, etc.; the building heating terminal 50 releases heat, and the hot water temperature drops to 55~60℃. The heat pump return water section: the 55~60℃ hot water is sent back to the condenser 28 by the heat pump return water pump 24; after being heated by the condenser 28, it is re-heated to 70℃, and the cycle continues.

[0076] The heat pump system 20 also includes an air source hot water circulation section, in which the hot water outlet temperature of the air source heat pump 21 is 40℃, and the return water temperature is 30℃; this part can be used in the air side heat exchanger circuit or as a heat pump refrigerant evaporation side auxiliary water circulation, which helps to stabilize the evaporation pressure and efficiency.

[0077] Specifically, in response to a hot water supply instruction, a first hot water amount of the heat storage water tank in a previous preset period and a second hot water amount required by the building heating terminal in a current preset period are obtained; the first hot water amount and the second hot water amount are compared to obtain a comparison result. If the comparison result is that the first hot water amount is less than the second hot water amount, the heat supply path is a first heat supply path, the hot water of the first hot water amount in the heat storage water tank is enabled to be supplied to the building heating terminal through the heat exchange pipeline system, and a first remaining hot water amount is supplemented by a third hot water amount generated by the heat pump system driven by the power of the photovoltaic array. If the comparison result is that the first hot water amount is greater than or equal to the second hot water amount, the heat supply path is a second heat supply path, the hot water of the second hot water amount in the heat storage water tank is enabled to be supplied to the building heating terminal through the heat exchange pipeline system, and a second remaining hot water amount is incorporated into a heat pump water inlet pipe to recover waste heat from a water inlet end of an air source heat pump of the heat pump system; wherein the second remaining hot water amount is a difference between the first hot water amount and the second hot water amount.

[0078] Specifically, in response to a hot water supply instruction, a first hot water amount of the heat storage water tank in a previous preset period and a second hot water amount required by the building heating terminal in a current preset period are obtained; the first hot water amount and the second hot water amount are compared to obtain a comparison result. If the comparison result is that the first hot water amount is less than the second hot water amount, the heat supply path is a first heat supply path, the hot water of the first hot water amount in the heat storage water tank is enabled to be supplied to the building heating terminal through the heat exchange pipeline system, and a first remaining hot water amount is supplemented by a third hot water amount generated by the heat pump system driven by the power of the photovoltaic array. If the comparison result is that the first hot water amount is greater than or equal to the second hot water amount, the heat supply path is a second heat supply path, the hot water of the second hot water amount in the heat storage water tank is enabled to be supplied to the building heating terminal through the heat exchange pipeline system, and a second remaining hot water amount is incorporated into a heat pump water inlet pipe to recover waste heat from a water inlet end of an air source heat pump of the heat pump system; wherein the second remaining hot water amount is a difference between the first hot water amount and the second hot water amount.

[0079] Taking a factory as an example, the factory originally uses a natural gas boiler for heating, and the temperature of the hot water required for heating in the building is 70 DEG C, the operation efficiency of the natural gas boiler is 95%, about 150,000 cubic meters of natural gas is consumed per year, and the average annual purchase cost of natural gas is about 780,000 yuan. In order to reduce energy consumption and respond to clean energy transformation, the building heating scheme based on the photovoltaic coupling architecture proposed by the present application is implemented in the factory. The improved heating system adopts the following configuration: a photovoltaic array 10 is constructed, which preferentially supplies power to the building load, and the excess power is used to drive a heat pump system 20; the heat pump system 20 adopts a two-stage heating scheme of air source heat pump 21 + screw heat pump 22, the system COP is about 3.7, and the total heating capacity is 1230 kW, which can completely cover the building heat load; a 1450 m³ heat storage tank 30 is configured to store excess hot water every day, to realize daily load regulation and smooth photovoltaic power fluctuation; the heat loss rate of the heat storage tank 30 is 6% per 24 hours, and an insulation structure is set to reduce long-term heat loss; the operation strategy is daily scheduling according to the logic of "first release and then production, preferential use of photovoltaic power, and remaining heat storage" proposed by the present application. It can be seen that this scheme can completely replace the natural gas boiler heating to achieve the goal of clean energy replacement; balance the photovoltaic fluctuation and the continuity of the heat pump operation, and ensure the constant temperature and stable supply of hot water at 70 DEG C; greatly reduce the operation cost, and improve the energy efficiency ratio and the investment return rate of the building heating system. The energy data statistics are as follows: the heat pump system consumes about 290,000 kWh of photovoltaic power per year; about 130,000 kWh of grid power (low valley power) is consumed, and the annual cost is about 70,000 yuan RMB; compared with the original scheme, the annual heating energy cost is reduced from 780,000 yuan to 70,000 yuan, and the annual saving is 710,000 yuan RMB, and the energy saving economic benefit is remarkable. Therefore, the example fully illustrates the feasibility and economy of the present application in the field of industrial building heating, and has good popularization and application prospect.

[0080] In summary, the embodiment of the present application responds to the hot water supply instruction, obtains the first hot water amount of the heat storage tank 30 in the last preset period and the second hot water amount required by the building heating terminal 50 in the current preset period, compares and processes the first hot water amount and the second hot water amount to obtain a comparison result, judges and processes the comparison result to obtain a heat supply path, and realizes the hot water supply of the building heating terminal 50 by using the photovoltaic array 10, the heat pump system 20, the heat storage tank 30 and the heat exchange pipeline system 40 based on the heat supply path. Therefore, the embodiment of the present application determines the heat supply path according to different comparison results, realizes the hot water supply of the building heating terminal 50 by using the photovoltaic array 10, the heat pump system 20, the heat storage tank 30 and the heat exchange pipeline system 40 based on the heat supply path, realizes the energy decoupling and dynamic coordination among the photovoltaic array 10, the heat pump system 20 and the heat storage tank 30, effectively alleviates the problem of unstable operation of the heat pump system 20 caused by the fluctuation of photovoltaic power generation, and guarantees the continuous supply of hot water and the stability of heating in the building.

[0081] Referring to Figures 2 to 4 , Figure 2 a schematic block diagram of a photovoltaic coupling architecture provided by an embodiment of the present application; Figure 3 a schematic block diagram of a heat pump system in a photovoltaic coupling architecture provided by an embodiment of the present application; Figure 4 a schematic block diagram of a building heating device based on a photovoltaic coupling architecture provided by an embodiment of the present application. As Figure 4 shown, corresponding to the above building heating method based on a photovoltaic coupling architecture, the present application also provides a building heating device based on a photovoltaic coupling architecture, which is applied to a photovoltaic coupling architecture 1, the photovoltaic coupling architecture 1 comprising a photovoltaic array 10, a heat pump system 20, a heat storage water tank 30, a heat exchange pipeline system 40 and a building heating terminal 50, the photovoltaic array 10 being connected with the heat pump system 20, the heat pump system 20 being connected with the heat storage water tank 30, the heat pump system 20 and the heat storage water tank 30 being connected with the building heating terminal 50 through the heat exchange pipeline system 40 respectively. Specifically, referring to Figure 4 , the building heating device based on a photovoltaic coupling architecture 700 comprises:

[0082] an acquisition unit 701 configured to acquire a first hot water amount of the heat storage water tank in a previous preset period and a second hot water amount required by the building heating terminal in a current preset period in response to a hot water supply instruction;

[0083] a comparison unit 702 configured to perform comparison processing on the first hot water amount and the second hot water amount to obtain a comparison result;

[0084] a judgment unit 703 configured to perform judgment processing on the comparison result to obtain a heat supply path;

[0085] a supply unit 704 configured to realize hot water supply to the building heating terminal by the photovoltaic array, the heat pump system, the heat storage water tank and the heat exchange pipeline system based on the heat supply path.

[0086] In some embodiments, when performing the processing step of performing judgment processing on the comparison result to obtain a heat supply path, the judgment unit 703 is specifically configured to:

[0087] if the comparison result is that the first hot water amount is less than the second hot water amount, the heat supply path is a first heat supply path;

[0088] if the comparison result is that the first hot water amount is greater than or equal to the second hot water amount, the heat supply path is a second heat supply path.

[0089] In some embodiments, the supply unit 704, in the process of supplying hot water to the building heating terminal based on the heating supply path, is specifically configured to:

[0090] when the heating supply path is the first heating 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 the difference between the second amount of hot water and the first amount of hot water.

[0091] 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.

[0092] In some embodiments, the supply unit 704, in the process of supplying hot water to the building heating terminal based on the heating supply path, is specifically configured to:

[0093] when the heating supply path is the second heating 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 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.

[0094] In some embodiments, after the process of, when the heating supply path is the first heating 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, the supply unit 704 is further configured to:

[0095] 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 the sum of the first amount of hot water and the third amount of hot water.

[0096] In some embodiments, after the process of, when the heating supply path is the first heating 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, the supply unit 704 is further configured to:

[0097] 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 output hot water.

[0098] In some embodiments, the supply unit 704, when performing the when the heat supply path is a second heat supply path, enabling the second amount of hot water in the heat storage water tank to supply the building heating terminal through the heat exchange pipeline system, and incorporating the second remaining amount of hot water into the heat pump water inlet pipe to recover waste heat by the heat pump system, is further used for:

[0099] driving the heat pump system by using the power of the photovoltaic array, and outputting hot water by using the second remaining amount of hot water.

[0100] It should be noted that the specific implementation process of the above-mentioned building heating device based on photovoltaic coupling architecture and each unit can be clearly understood by those skilled in the art, which can refer to the corresponding description in the foregoing method embodiments. For the convenience and brevity of description, it will not be repeated here.

[0101] The above-mentioned building heating device based on photovoltaic coupling architecture can be realized in the form of a computer program, which can run on an electronic device as shown in Figure 5 .

[0102] Please refer to Figure 5 , Figure 5 is a schematic block diagram of an electronic device provided by an embodiment of the present application. The electronic device 800 can be a terminal or a server, wherein the terminal can be an electronic device with communication function. The server can be a stand-alone server or a server cluster composed of multiple servers.

[0103] Referring to Figure 5 , the electronic device 800 includes a processor 802, a memory, and a network interface 805 connected through a system bus 801, wherein the memory can include a non-volatile storage medium 803 and an internal memory 804.

[0104] 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 cause the processor 802 to perform a building heating method based on photovoltaic coupling architecture.

[0105] The processor 802 is configured to provide computing and control capabilities to support the operation of the entire electronic device 800.

[0106] The memory 804 provides an environment for running the computer program 8032 in the nonvolatile storage medium 803, which, when executed by the processor 802, causes the processor 802 to perform a building heating method based on a photovoltaic coupling architecture.

[0107] The network interface 805 is used for network communication with other devices. Those skilled in the art can understand that, Figure 5 The structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the electronic device 800 to which the scheme of the present application is applied. The specific electronic device 800 can include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0108] The processor 802 is configured to run the computer program 8032 stored in the memory to implement the following steps:

[0109] In response to a hot water supply instruction, obtaining a first hot water amount of the heat storage tank in a previous preset period and a second hot water amount required by the building heating terminal in a current preset period;

[0110] Comparing the first hot water amount and the second hot water amount to obtain a comparison result;

[0111] Judging according to the comparison result to obtain a heat supply path;

[0112] Based on the heat supply path, hot water is supplied to the building heating terminal by using the photovoltaic array, the heat pump system, the heat storage tank, and the heat exchange pipeline system.

[0113] In some embodiments, when implementing the step of judging according to the comparison result to obtain a heat supply path, the processor 802 is specifically configured to:

[0114] If the comparison result is that the first hot water amount is less than the second hot water amount, the heat supply path is a first heat supply path;

[0115] If the comparison result is that the first hot water amount is greater than or equal to the second hot water amount, the heat supply path is a second heat supply path.

[0116] In some embodiments, when implementing the step of supplying hot water to the building heating terminal by using the photovoltaic array, the heat pump system, the heat storage tank, and the heat exchange pipeline system based on the heat supply path, the processor 802 is specifically configured to:

[0117] 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;

[0118] 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.

[0119] In some embodiments, the processor 802, when implementing the process 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 pipeline system based on the heat supply path, is further specifically used for:

[0120] 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 for heat recovery 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.

[0121] In some embodiments, the processor 802, after implementing 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:

[0122] 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.

[0123] In some embodiments, the processor 802, after implementing 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:

[0124] 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.

[0125] In some embodiments, the processor 802, after implementing the step of enabling the second amount of hot water in the heat storage tank to be supplied to the building heating terminal through the heat exchange pipeline system when the heat supply path is the second heat supply path, and incorporating the second remaining amount of hot water into the heat pump water inlet pipe to recover waste heat by the heat pump system, is further configured to:

[0126] driving the heat pump system by the electric power of the photovoltaic array, and producing hot water by using the second remaining amount of hot water.

[0127] It should be understood that, in the embodiments of the present application, the processor 802 can be a central processing unit (CPU), and the processor 802 can also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or any conventional processor.

[0128] It can be understood by those skilled in the art that all or part of the processes in the above-mentioned embodiments can be completed by a computer program instructing relevant hardware. The computer program includes program instructions, and the computer program can be stored in a storage medium, which is a computer-readable storage medium. The program instructions are executed by at least one processor in the computer system to implement the process steps of the above-mentioned embodiments.

[0129] Therefore, the present application further provides a storage medium. The storage medium can be a computer-readable storage medium. The storage medium stores a computer program, wherein the computer program includes program instructions. The program instructions are executed by the processor to make the processor perform the following steps:

[0130] in response to a hot water supply instruction, obtaining a first amount of hot water in the heat 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;

[0131] comparing the first amount of hot water and the second amount of hot water to obtain a comparison result;

[0132] judging the comparison result to obtain a heat supply path;

[0133] implementing the heat supply path, to supply 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 pipeline system.

[0134] In an embodiment, when the processor executes the program instructions to implement the process of determining the heat supply path according to the comparison result, the processor is specifically configured to:

[0135] If the comparison result is that the first hot water amount is less than the second hot water amount, the heat supply path is a first heat supply path.

[0136] If the comparison result is that the first hot water amount is greater than or equal to the second hot water amount, the heat supply path is a second heat supply path.

[0137] In an embodiment, when the processor executes the program instructions to implement the process 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 pipeline system based on the heat supply path, the processor is specifically configured to:

[0138] When the heat supply path is the first heat supply path, hot water of the first hot water amount in the hot water storage tank is enabled to be supplied to the building heating terminal through the heat exchange pipeline system, and a first remaining hot water amount is supplemented by a third hot water amount generated by the heat pump system driven by power of the photovoltaic array; wherein the first remaining hot water amount is a difference between the second hot water amount and the first hot water amount.

[0139] If the third hot water amount is less than the first remaining hot water amount, the power grid of the photovoltaic coupling architecture continues to drive the heat pump system to generate hot water for supplement.

[0140] In an embodiment, when the processor executes the program instructions to implement the process 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 pipeline system based on the heat supply path, the processor is further specifically configured to:

[0141] When the heat supply path is the second heat supply path, hot water of the second hot water amount in the hot water storage tank is enabled to be supplied to the building heating terminal through the heat exchange pipeline system, and a second remaining hot water amount is incorporated into a heat pump water inlet pipe to recover waste heat by the heat pump system; wherein the second remaining hot water amount is a difference between the first hot water amount and the second hot water amount.

[0142] In an embodiment, the processor, after executing the program instructions to implement 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 the first remaining amount of hot water being supplemented by a third amount of hot water produced by the heat pump system driven by the power of the photovoltaic array, is further used to:

[0143] 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 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.

[0144] In an embodiment, the processor, after executing the program instructions to implement 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 the first remaining amount of hot water being supplemented by a third amount of hot water produced by the heat pump system driven by the power of the photovoltaic array, is further used to:

[0145] 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.

[0146] In an embodiment, the processor, after executing the program instructions to implement the process step of, 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 incorporating the second remaining amount of hot water into the heat pump water inlet pipe to recover waste heat by the heat pump system, is further used to:

[0147] driving the heat pump system by the power of the photovoltaic array, and producing hot water by the second remaining amount of hot water.

[0148] 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.

[0149] Those skilled in the art can understand that the units and algorithm steps of each example described in combination 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 each example 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.

[0150] In several embodiments provided by the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. For example, the apparatus embodiments described above are merely 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 executed.

[0151] The steps in the method embodiments of the present application can be adjusted, combined and reduced in sequence according to actual needs. The units in the apparatus embodiments of the present application can be combined, divided and reduced 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.

[0152] The integrated unit, if realized in the form of a software functional unit and sold or used as an independent product, can be stored in a storage medium. Based on such understanding, the technical solutions of the present application essentially or 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, terminal or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application.

[0153] The above description 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 in 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 method for building heating based on photovoltaic coupling architecture, characterized by, The application is applied to a photovoltaic coupling architecture, which comprises a photovoltaic array, a heat pump system, a heat storage water tank, a heat exchange pipeline system and a building heating terminal, the photovoltaic array is connected with the heat pump system, the heat pump system is connected with the heat storage water tank, the heat pump system and the heat storage water tank are respectively connected with the building heating terminal through the heat exchange pipeline system; the building heating method based on the photovoltaic coupling architecture comprises: In response to a hot water supply instruction, a first hot water amount of the heat storage water tank in a previous preset period and a second hot water amount required by the building heating terminal in a current preset period are obtained; The first hot water amount and the second hot water amount are compared to obtain a comparison result; The comparison result is judged to obtain a heating path; Based on the heating path, hot water supply to the building heating terminal is realized by using the photovoltaic array, the heat pump system, the heat storage water tank and the heat exchange pipeline system; The comparison result is judged to obtain a heating path, comprising: If the comparison result is that the first hot water amount is less than the second hot water amount, the heating path is a first heating path; If 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 a second heating path; Based on the heating path, hot water supply to the building heating terminal is realized by using the photovoltaic array, the heat pump system, the heat storage water tank and the heat exchange pipeline system, comprising: When the heating path is the first heating path, the hot water of the first hot water amount in the heat storage water tank is enabled to be supplied to the building heating terminal through the heat exchange pipeline system, and a first remaining hot water amount is supplemented by a third hot water amount generated by the heat pump system driven by the power of the photovoltaic array; wherein the first remaining hot water amount is the difference between the second hot water amount and the first hot water amount; If the third hot water amount is less than the first remaining hot water amount, the power grid of the photovoltaic coupling architecture is used to continue to drive the heat pump system to generate hot water; Based on the heating path, hot water supply to the building heating terminal is realized by using the photovoltaic array, the heat pump system, the heat storage water tank and the heat exchange pipeline system, comprising: When the heating path is the second heating path, the hot water of the second hot water amount in the heat storage water tank is enabled to be supplied to the building heating terminal through the heat exchange pipeline system, and a second remaining hot water amount is incorporated into a heat pump water inlet pipe to recover waste heat by the heat pump system; wherein the second remaining hot water amount is the difference between the first hot water amount and the second hot water amount.

2. The method for building heating based on photovoltaic coupling architecture according to claim 1, characterized in that, After the first remaining hot water amount is supplemented by the third hot water amount generated by the heat pump system driven by the power of the photovoltaic array, the first remaining hot water amount is supplemented by the third hot water amount generated by the heat pump system driven by the power of the photovoltaic array, and a first remaining hot water amount is supplemented by the third hot water amount generated by the heat pump system driven by the power of the photovoltaic array. When the fourth hot water amount is greater than or equal to the second hot water amount, the photovoltaic array drives the heat pump system to output hot water and input into the hot water storage tank; wherein the fourth hot water amount is the sum of the first hot water amount and the third hot water amount.

3. The method for building heating based on photovoltaic coupling architecture according to claim 2, characterized in that, When the heating path is the first heating path, the first hot water amount of hot water in the hot water storage tank is enabled to be supplied to the building heating terminal through the heat exchange pipeline system, and a first remaining hot water amount is supplemented by a third hot water amount output by the heat pump system driven by the power of the photovoltaic array, and the first remaining hot water amount is further supplemented by a fourth hot water amount output by the heat pump system driven by the power of the photovoltaic array, and the fourth hot water amount is the sum of the first hot water amount and the third hot water amount. 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.

4. The method for building heating based on photovoltaic coupling architecture according to claim 1, characterized in that, When the heating path is the second heating path, the second hot water amount of hot water in the hot water storage tank is enabled to be supplied to the building heating terminal through the heat exchange pipeline system, and a second remaining hot water amount is recycled by the heat pump system after the second remaining hot water amount is integrated into the heat pump water inlet pipe and the waste heat is recovered. The heat pump system is driven by the power of the photovoltaic array, and the second remaining hot water amount is used to output hot water.

5. A building heating device based on photovoltaic coupling architecture, characterized in that, The photovoltaic coupling architecture includes a photovoltaic array, a heat pump system, a hot water storage tank, a heat exchange pipeline 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. The heat pump system and the hot water storage tank are respectively connected to the building heating terminal through the heat exchange pipeline system. The building heating device based on the photovoltaic coupling architecture includes: An acquisition unit is configured to acquire a first hot water amount of the hot water storage tank in a previous preset period and a second hot water amount required by the building heating terminal in a current preset period in response to a hot water supply instruction. A comparison unit is configured to compare the first hot water amount and the second hot water amount to obtain a comparison result. A judgment unit is configured to judge the comparison result to obtain a heating path. A supply unit is configured to supply 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 pipeline system based on the heating path. The judgment of the comparison result to obtain the heating path includes: If the comparison result is that the first hot water amount is less than the second hot water amount, the heating path is a first heating path. If 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 a second heating path. The supply of 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 pipeline system based on the heating path includes: When the heating path is the first heating path, the first hot water amount of hot water in the hot water storage tank is enabled to be supplied to the building heating terminal through the heat exchange pipeline system, and a first remaining hot water amount is supplemented by a third hot water amount output by the heat pump system driven by the power of the photovoltaic array. If the third hot water amount is less than the first remaining hot water amount, the power grid using the photovoltaic coupling architecture continues to drive the heat pump system to output hot water supplement; The heat supply path based on the heat supply path using the photovoltaic array, the heat pump system, the hot water storage tank, the heat exchange pipeline system to supply hot water to the building heating terminal, also includes: When the heat supply path is a second heat supply path, the second hot water amount in the hot water storage tank is enabled to supply the building heating terminal through the heat exchange pipeline system, and the second remaining hot water amount is incorporated into the heat pump water inlet pipe to recover waste heat from the heat pump system; wherein the second remaining hot water amount is the difference between the first hot water amount and the second hot water amount.

6. An electronic device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, The processor executes the computer program to implement the building heating method based on the photovoltaic coupling architecture as claimed in any one of claims 1-4.

7. A computer-readable storage medium, characterized in that, The storage medium stores a computer program, the computer program includes program instructions, the program instructions when being executed by the processor make the processor execute the building heating method based on the photovoltaic coupling architecture as claimed in any one of claims 1-4.

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