Solar photovoltaic, heat storage heating and hot water supply integrated system

Abstract

The utility model relates to the technical field of comprehensive utilization of solar energy, in particular to a solar photovoltaic, heat storage heating and hot water supply integrated system, which comprises a photovoltaic power generation module, a mains supply supplementary device and a non-grid-connected inverter, and the photovoltaic power generation module and the mains supply supplementary device are both connected with the input end of the non-grid-connected inverter. The input end of the commercial power supplementing device is connected with commercial power, and the output end of the non-grid-connected inverter is provided with an electric floor heat storage module and a hot water heat storage module in parallel; the photovoltaic power generation module preferentially supplies power to the electric floor heat storage module and the hot water heat storage module; when the power supply of the photovoltaic power generation module is insufficient, the non-grid-connected inverter is automatically connected to the commercial power; the system is adjusted to be in a heating mode and a non-heating mode according to actual requirements. The photovoltaic power generation module and the mains supply are used for dual-redundancy power supply, and continuous operation of the system is guaranteed; the electric floor heat storage module supplies heat, the hot water heat storage module supplies hot water, heating is preferentially conducted in winter, hot water is supplied in other seasons, and the photovoltaic power generation absorption rate is increased.

Description

Technical Field

[0001] This utility model relates to the field of solar energy comprehensive utilization technology, specifically to an integrated system of solar photovoltaic, thermal storage heating and hot water supply. Background Technology

[0002] Currently, traditional heating and hot water supply systems rely on fossil fuels or grid electricity, resulting in high energy consumption and large carbon emissions. Existing solar energy systems are typically used only for independent power generation and grid connection, or new photovoltaic direct-drive heat pump air conditioners and photovoltaic water heaters face challenges such as capacity limitations, cumbersome procedures, and difficult approval processes when connecting to the grid. Photovoltaic direct-drive heat pump air conditioners suffer from limitations in usage time and application scenarios, as well as high equipment investment. Photovoltaic water heaters are characterized by single-purpose use and low efficiency. Conventional off-grid photovoltaic energy storage systems, on the other hand, suffer from high battery costs and short service life. Summary of the Invention

[0003] In view of the shortcomings of the prior art and in order to solve the problems mentioned in the background art, the technical problem to be solved by this utility model is to provide a solar photovoltaic and thermal storage heating and hot water supply integrated system that dynamically matches photovoltaic energy with thermal storage devices such as electric floor heating and electric water heaters, and seamlessly switches to mains power when sunlight is insufficient.

[0004] The technical problem to be solved by this utility model is achieved through the following technical solution: a solar photovoltaic and thermal storage heating and hot water supply integrated system, including a photovoltaic power generation module, a mains power supplement device and an off-grid inverter. The photovoltaic power generation module and the mains power supplement device are both connected to the input terminal of the off-grid inverter. The input terminal of the mains power supplement device is connected to the mains power. The output terminal of the off-grid inverter is provided with an electric floor thermal storage module and a hot water thermal storage module in parallel.

[0005] The photovoltaic (PV) power generation modules prioritize powering the electric floor thermal storage modules and the hot water thermal storage modules. When the power supply from the PV power generation modules is insufficient, the off-grid inverter automatically connects to the mains power. The system adjusts to heating and non-heating modes according to actual needs. Dual redundancy of PV power generation modules and mains power ensures continuous system operation. The electric floor thermal storage modules provide heating, while the hot water thermal storage modules provide hot water. Heating is prioritized in winter, and hot water is provided in other seasons, improving the PV power generation utilization rate.

[0006] Both the electric floor heating storage module and the hot water heating storage module are equipped with integrated thermostats. These integrated thermostats include a thermometer and a remote monitor. The remote monitor connects to a mobile device via a signal. The integrated thermostats monitor and report the temperature in real time, triggering the heating logic of the electric floor heating storage module and the hot water heating storage module at the set temperature, respectively. The integrated thermostat and remote monitoring function allow users to adjust heating / hot water priorities and view energy consumption data in real time via their mobile devices.

[0007] As a further embodiment of this utility model, the heating mode is suitable for winter, and the photovoltaic power generation module prioritizes power supply for the electric floor heat storage module for heating. The electric floor heat storage module stores heat during the day and releases heat through thermal radiation at night.

[0008] The photovoltaic power generation module supplies power for heating to the electric floor thermal storage module, and the excess power is used to power the hot water thermal storage module.

[0009] In non-heating mode, the photovoltaic power generation module and the mains power supplement device prioritize power supply to the hot water storage module; the electric floor storage module and mains power supplement are seamlessly integrated, and the energy distribution is dynamically adjusted according to the season, resulting in the lowest investment cost and the longest service life.

[0010] As a further embodiment of this invention, the electric floor heating heat storage module includes an electric floor heating control module and an electric heating film laid on the ground. A solid heat storage layer is provided between the electric heating film and the ground, and an insulating layer is provided on the surface of the electric heating film. The floor heating control module is electrically connected to an off-grid inverter. By combining the solid heat storage layer of the electric floor and the water heat storage of the electric water heater, the spatial and temporal distribution of heat energy is optimized, equipment investment costs are reduced, and both heat storage density and response speed are considered.

[0011] As a further aspect of this invention, the floor heating control module controls the power supply and heating logic of the electric heating film, and controls the heat storage and release process of the solid heat storage layer. This optimizes energy use, reduces unnecessary energy consumption, and improves energy efficiency. The control module can not only adjust the power supply to the electric heating film, but also precisely control the heat storage and release process of the solid heat storage layer. This helps to achieve temperature stability, avoid temperature fluctuations, and provide a comfortable heating experience. The system can provide efficient heating when needed and reduce or stop heating when not needed, reducing energy consumption and achieving energy conservation and emission reduction.

[0012] As a further embodiment of this invention, the solid heat storage layer is composed of a concrete and magnesium oxide composite. The concrete and magnesium oxide composite material has high heat capacity and thermal conductivity, effectively absorbing and storing heat. This improves the heat storage capacity of the heat storage layer, prolongs the warming effect of the floor heating system, reduces energy consumption, and maintains a stable indoor temperature. It also maintains stable physical properties during long-term heating, extending the service life of the floor heating system and reducing maintenance and replacement costs.

[0013] As a further embodiment of this invention, the hot water storage module includes a water storage tank, within which an electric heating rod is installed. The electric heating rod is signal-connected to an electric water heater control module, which is electrically connected to an off-grid inverter. This enables precise temperature control management. Based on the user-set temperature, the control module can automatically adjust the operating state of the electric heating rod to avoid overheating or energy waste.

[0014] As a further embodiment of this utility model, the electric water heater control module controls the power supply and heating logic of the electric heating rod in the water storage tank;

[0015] The water storage tank is connected to the water supply end and the water use end through pipes, and the water storage tank has a volume of 50L to 80L.

[0016] As a further embodiment of this invention, the off-grid inverter includes a photovoltaic (PV) and mains power intelligent switching module. This module comprises a microcontroller, a PV voltage monitoring unit, and a mains voltage monitoring unit. The microcontroller switches between PV and mains power supply based on data obtained from the PV and mains voltage monitoring units. The PV and mains power intelligent switching module automatically determines the power supply status of the PV and mains power sources based on real-time data from these units. The microcontroller determines whether to use PV power or mains power based on the received data, ensuring the system always selects the optimal power source and avoiding power outages due to insufficient PV power.

[0017] As a further embodiment of this utility model, the photovoltaic and mains power intelligent switching module is communicatively connected to the floor heating control module and the electric water heater control module, respectively. The off-grid inverter transmits signals to the two control modules through the intelligent switching module to allocate photovoltaic or mains power supply signals respectively. The floor heating control module adjusts the operating state of the electric heating film according to the power supply signal, and the electric water heater control module adjusts the operating state of the electric heating rod according to the power supply signal.

[0018] When the integrated thermostat in the room detects that the indoor temperature is <18℃, it triggers the floor heating control module to adjust the heating of the electric heating film according to the power supply signal to maintain the set temperature.

[0019] The integrated thermostat in the water tank detects that the water temperature is below 40℃ and triggers the electric water heater control module to adjust the electric heating element to maintain the set temperature based on the power supply signal. By setting temperature thresholds (such as triggering heating when the room temperature is below 18℃ or the water temperature is below 40℃) and storing heat during off-peak electricity prices at night, user comfort and energy consumption are balanced.

[0020] As a further embodiment of this invention, the photovoltaic power generation module includes a light intensity monitoring unit, a photovoltaic power generation monitoring unit, and photovoltaic panels. The photovoltaic panels are a photovoltaic array installed on the roof. The installation tilt angle of the photovoltaic panels is adjusted according to the local latitude, and the installation area of ​​the photovoltaic panels is adjusted according to the floor size. This ensures that the photovoltaic panels receive sunlight at the optimal angle, thereby maximizing solar energy absorption efficiency. Different latitudes have different sunlight angles; adjusting the installation angle effectively improves the power generation capacity of the photovoltaic power generation module. It also makes full use of roof space and avoids waste. The layout and installation of the photovoltaic panels are determined according to the specific dimensions of the floor, ensuring that the system utilizes as much available space as possible, thereby increasing the system's power generation.

[0021] Compared with existing technologies, the beneficial effects of this utility model are as follows: This system includes a photovoltaic power generation module, a mains power supplement device, and an off-grid inverter. Both the photovoltaic power generation module and the mains power supplement device are connected to the input terminal of the off-grid inverter. The input terminal of the mains power supplement device is connected to the mains power. An electric floor thermal storage module and a hot water thermal storage module are connected in parallel at the output terminal of the off-grid inverter. The photovoltaic power generation module prioritizes power supply to the electric floor thermal storage module and the hot water thermal storage module. When the photovoltaic power generation module's power supply is insufficient, the off-grid inverter automatically connects to the mains power. The system adjusts to heating mode and non-heating mode according to actual needs. The use of dual redundant power supply from the photovoltaic power generation module and the mains power ensures continuous system operation. The electric floor thermal storage module provides heating, and the hot water thermal storage module provides hot water. Heating is prioritized in winter, and hot water is provided in other seasons, improving the photovoltaic power generation absorption rate.

[0022] Both the electric floor heating storage module and the hot water heating storage module are equipped with integrated thermostats. These integrated thermostats include a thermometer and a remote monitor. The remote monitor connects to a mobile device via a signal. The integrated thermostats monitor and report the temperature in real time, triggering the heating logic of the electric floor heating storage module and the hot water heating storage module at the set temperature, respectively. The integrated thermostat and remote monitoring function allow users to adjust heating / hot water priorities and view energy consumption data in real time via their mobile devices.

[0023] In both heating and non-heating modes, the photovoltaic power generation module and the mains power supplementation device prioritize power supply to the hot water storage module. The system seamlessly integrates the electric floor heat storage module and the mains power supplementation, dynamically adjusting energy distribution according to the season, resulting in minimal investment costs and a long service life. By combining the electric floor solid heat storage layer with the water storage of the electric water heater, the system optimizes the spatial and temporal distribution of heat energy, reduces equipment investment costs, and balances heat storage density and response speed.

[0024] The floor heating control module controls the power supply and heating logic of the electric heating film, as well as the heat storage and release process of the solid heat storage layer. This optimizes energy use, reduces unnecessary energy consumption, and improves energy efficiency. The control module not only regulates the power supply to the electric heating film but also precisely controls the heat storage and release process of the solid heat storage layer. This helps achieve temperature stability, avoids temperature fluctuations, and provides a comfortable heating experience. The system can provide efficient heating when needed and reduce or stop heating when not needed, reducing energy consumption and achieving energy conservation and emission reduction. By setting temperature thresholds (e.g., heating is triggered when room temperature < 18℃ or water temperature < 40℃) and utilizing off-peak electricity prices at night for heat storage, the system balances user comfort with energy consumption. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the hot water heat storage module structure of this utility model;

[0027] Figure 3 This is a schematic diagram of the heat storage structure of the electric floor of this utility model;

[0028] Figure 4 This is a flowchart illustrating the present invention.

[0029] In the diagram: 1-Electric floor heating storage module, 101-Electric floor heating control module, 102-Solid heat storage layer, 103-Electric heating film, 104-Insulation layer, 2-Hot water heating storage module, 201-Electric water heater control module, 202-Water storage tank, 203-Thermometer, 231-Remote monitor, 204-Electric heating rod, 3-Photovoltaic power generation module, 301-Photovoltaic power generation module, 302-Light intensity monitoring unit, 303-Photovoltaic power generation monitoring unit, 4-Off-grid inverter, 5-Mainland power supplement device. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature means that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature means that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] Example 1

[0034] As attached Figure 1 As shown, an integrated solar photovoltaic, thermal storage heating, and hot water supply system includes a photovoltaic power generation module 301, a mains power supplement device 5, and an off-grid inverter 4. The photovoltaic power generation module includes a light intensity monitoring unit 302, a photovoltaic power generation monitoring unit 303, and photovoltaic panels 301. The photovoltaic panels are rooftop photovoltaic arrays, with the installation tilt angle adjusted according to local latitude and the installation area adjusted according to the floor size. The photovoltaic panels receive sunlight at the optimal angle to maximize solar energy absorption efficiency. Since the angle of sunlight varies at different latitudes, adjusting the installation angle effectively improves the power generation capacity of the photovoltaic power generation module. The system fully utilizes roof space, determining the layout and installation of the photovoltaic panels based on the specific dimensions of the floor, maximizing available space and increasing the system's power generation. The light intensity monitoring unit monitors the light intensity, while the photovoltaic power generation monitoring unit monitors the photovoltaic power generation. When photovoltaic power is sufficient, the photovoltaic power generation module prioritizes powering the rooftop thermal storage module 1 and the hot water thermal storage module 2.

[0035] When the photovoltaic power generation modules are insufficient, the mains power supplement device is activated, and the off-grid inverter automatically connects to the mains power. The system adjusts to heating mode and non-heating mode according to actual needs. A dual redundant power supply of photovoltaic power generation modules and mains power is adopted. When the photovoltaic power generation modules are insufficient, the system automatically switches to mains power to ensure continuous system operation. This allows the electric floor thermal storage modules to provide heating, and the hot water thermal storage modules to provide hot water, prioritizing heating in winter and providing hot water in other seasons.

[0036] The photovoltaic power generation module 3 and the mains power supplement device 5 are both connected to the input terminal of the off-grid inverter 4. The input terminal of the mains power supplement device 4 is connected to the mains power. The off-grid inverter output terminal is equipped with a floor heat storage module 1 and a hot water heat storage module 2 connected in parallel.

[0037] Both the electric floor heating storage module and the hot water heating storage module are equipped with integrated thermostats. The integrated thermostat includes a thermometer 203 and a remote monitor 231. The remote monitor is connected to a mobile device via a signal. The integrated thermostat monitors and feeds back the temperature in real time, triggering the heating logic of the electric floor heating storage module and the hot water heating storage module at the set temperature, respectively. The integrated thermostat and remote monitoring function allow users to adjust heating / hot water priorities and view energy consumption data in real time via their mobile devices.

[0038] The off-grid inverter 4 is equipped with a photovoltaic (PV) and mains power intelligent switching module. This module includes a microcontroller, a PV voltage monitoring unit, and a mains voltage monitoring unit. The microcontroller switches between PV and mains power supply based on data obtained from these units. The module automatically determines the power supply status of both the PV and mains power sources based on real-time data from these units. The microcontroller decides whether to use PV or mains power based on the received data, ensuring the system always selects the optimal power source and avoids power outages due to insufficient PV power.

[0039] The photovoltaic and mains power intelligent switching module is communicatively connected to the floor heating control module 101 and the electric water heater control module 201, respectively. The off-grid inverter 4 transmits signals to the two control modules through the intelligent switching module to allocate the power supply signals of the photovoltaic or mains power 501 respectively. The floor heating control module adjusts the operating state of the electric heating film according to the power supply signal, and the electric water heater control module adjusts the operating state of the electric heating rod according to the power supply signal.

[0040] When the integrated thermostat in the room detects that the indoor temperature is <18℃, it triggers the floor heating control module 101 to adjust the heating of the electric heating film according to the power supply signal to maintain the set temperature.

[0041] When the integrated thermostat of the water tank detects that the water tank temperature is <40℃, it triggers the electric water heater control module 201 to adjust the electric heating rod to maintain the set temperature according to the power supply signal. By setting a temperature threshold (such as triggering heating when the room temperature is <18℃ or the water temperature is <40℃) and storing heat at off-peak electricity prices at night, energy is saved for both the user and the water.

[0042] Example 2

[0043] The heating mode is suitable for winter. The photovoltaic power generation module prioritizes power supply for the electric floor heat storage module 1 for heating. The electric floor heat storage module stores heat during the day and releases heat through thermal radiation at night.

[0044] The photovoltaic power generation module supplies power for heating to the electric floor thermal storage module 1, and the excess power is used to power the hot water thermal storage module.

[0045] The electric floor heating heat storage module includes an electric floor heating control module and an electric heating film 103 laid on the floor. A solid heat storage layer 102 is provided between the electric heating film and the floor. The solid heat storage layer is composed of a concrete and magnesium oxide composite material. The concrete and magnesium oxide composite material has high heat capacity and thermal conductivity, effectively absorbing and storing heat. Heat is stored in the solid heat storage layer for a long time, prolonging the warming effect of the floor heating system, consuming energy slowly, and maintaining a stable indoor temperature. It maintains stable physical properties during long-term heating.

[0046] An insulating layer 104 is provided on the surface of the electric heating film, and the floor heating control module is electrically connected to the off-grid inverter. The floor heating control module 101 controls the power supply and heating logic of the electric heating film, and controls the heat storage and release process of the solid heat storage layer. When the integrated thermostat in the room detects that the indoor temperature is <18℃, it triggers the floor heating control module to adjust the heating of the electric heating film according to the power supply signal to maintain the set temperature; the floor heating control module adjusts the power supply of the electric heating film to precisely control the heat storage and release process of the solid heat storage layer.

[0047] The hot water storage module includes a water storage tank 202, which is connected to a water supply terminal and a water user terminal via pipes. The water storage tank has a volume of 60L. Water is supplied to the water storage tank 202 through the water supply terminal. When the water level in the tank reaches the set point, it is heated and then supplied as hot water to the water user terminal. The water tank has sufficient capacity for hot water storage.

[0048] An electric heating element 204 is installed inside the water storage tank. The electric heating element 204 is connected to the electric water heater control module 201 via a signal connection. The electric water heater control module is electrically connected to the off-grid inverter. The electric water heater control module achieves precise temperature control management. Based on the temperature set by the user, the electric water heater control module controls the power supply and heating logic of the electric heating element in the water storage tank.

[0049] When the integrated thermostat of the water tank detects that the water tank temperature is <40℃, it triggers the electric water heater control module 201 to adjust the electric heating rod to maintain the set temperature according to the power supply signal.

[0050] By combining the solid heat storage layer 102 of the electric floor with the water heat storage of the electric water heater, the spatial and temporal distribution of heat energy is optimized, the equipment investment cost is reduced, and the heat storage density and response speed are taken into account.

[0051] Example 3

[0052] In non-heating mode, the photovoltaic power generation module 301 and the mains power supplement device prioritize power supply to the hot water storage module 2; when the integrated thermostat of the water tank detects that the water tank temperature is <40℃, it triggers the electric water heater control module 201 to adjust the electric heating rod 204 to heat according to the power supply signal to maintain the set temperature.

[0053] The system integrates a heated floor thermal storage module 1 with mains power supplementation seamlessly, and dynamically adjusts energy distribution according to the season, resulting in minimal investment costs and a long service life.

[0054] In the description of this specification, the terms "connection," "installation," "fixing," and "setting," etc., are interpreted broadly. For example, "connection" can mean a fixed connection or an indirect connection via intermediate components without affecting the relationship between components and the technical effect; it can also mean an integral connection or a partial connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model or utility model according to the specific circumstances. The above description is only a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the protection scope of this utility model.

Claims

1. An integrated system for solar photovoltaic, thermal storage heating, and hot water supply, characterized in that: It includes a photovoltaic power generation module (3), a mains power supplement device (5) and an off-grid inverter (4). The photovoltaic power generation module and the mains power supplement device are both connected to the input terminal of the off-grid inverter (4). The input terminal of the mains power supplement device is connected to the mains power. The output terminal of the off-grid inverter is equipped with a floor heat storage module (1) and a hot water heat storage module (2) in parallel. The photovoltaic power generation module prioritizes powering the electric floor thermal storage module and the hot water thermal storage module; when the power supply from the photovoltaic power generation module is insufficient, the off-grid inverter automatically connects to the mains power; the system adjusts to heating mode and non-heating mode according to actual needs. Both the electric floor heat storage module and the hot water heat storage module are equipped with an integrated thermostat. The integrated thermostat includes a thermometer (203) and a remote monitor (231). The remote monitor is connected to the mobile terminal via a signal. The integrated thermostat detects the temperature in real time and provides feedback, thereby triggering the heating logic of the electric floor heat storage module and the hot water heat storage module at the set temperature.

2. The integrated solar photovoltaic, thermal storage heating, and hot water supply system according to claim 1, characterized in that: The heating mode is suitable for winter. The photovoltaic power generation module prioritizes supplying heating power to the electric floor heat storage module (1). The electric floor heat storage module stores heat during the day and releases heat through thermal radiation at night. The photovoltaic power generation module supplies power for heating to the electric floor heat storage module, and the excess power is used to supply power to the hot water heat storage module (2); In non-heating mode, the photovoltaic power generation module and the mains power supplement device prioritize power supply to the hot water storage module.

3. The integrated solar photovoltaic, thermal storage heating, and hot water supply system according to claim 2, characterized in that: The electric floor heat storage module (1) includes an electric floor heating control module (101) and an electric heating film (103) laid on the ground. A solid heat storage layer (102) is provided between the electric heating film and the ground. An insulating layer (104) is provided on the surface of the electric heating film. The floor heating control module is electrically connected to the off-grid inverter (4).

4. The integrated solar photovoltaic, thermal storage heating, and hot water supply system according to claim 3, characterized in that: The floor heating control module (101) controls the power supply and heating logic of the electric heating film, and controls the heat storage and heat release process of the solid heat storage layer.

5. The integrated solar photovoltaic, thermal storage heating, and hot water supply system according to claim 4, characterized in that: The solid heat storage layer (102) is composed of a concrete and magnesium oxide composite.

6. The integrated solar photovoltaic, thermal storage heating, and hot water supply system according to claim 5, characterized in that: The hot water storage module (2) includes a water storage tank (202), an electric heating rod (204) is provided in the water storage tank, the electric heating rod is signal connected to the electric water heater control module (201), and the electric water heater control module is electrically connected to the off-grid inverter.

7. The integrated solar photovoltaic, thermal storage heating, and hot water supply system according to claim 6, characterized in that: The electric water heater control module controls the power supply and heating logic of the electric heating rod in the water storage tank; The water storage tank (202) is connected to the water supply end and the water use end through pipes respectively, and the water storage tank has a volume of 50L to 80L.

8. The integrated solar photovoltaic, thermal storage heating, and hot water supply system according to claim 7, characterized in that: The off-grid inverter (4) is equipped with a photovoltaic and mains power intelligent switching module. The photovoltaic and mains power intelligent switching module includes a microcontroller, a photovoltaic voltage monitoring unit, and a mains voltage monitoring unit. The microcontroller switches between photovoltaic and mains power supply based on the data obtained by the photovoltaic voltage monitoring unit and the mains voltage monitoring unit.

9. The integrated solar photovoltaic, thermal storage heating, and hot water supply system according to claim 8, characterized in that: The photovoltaic and mains power intelligent switching module is connected to the floor heating control module (101) and the electric water heater control module (201) respectively. The off-grid inverter transmits signals to the two control modules through the intelligent switching module to allocate photovoltaic or mains power supply signals respectively. The floor heating control module adjusts the operating state of the electric heating film according to the power supply signal, and the electric water heater control module adjusts the operating state of the electric heating rod according to the power supply signal. The integrated thermostat in the room detects that the indoor temperature is <18℃ and triggers the floor heating control module (101) to adjust the heating of the electric heating film according to the power supply signal to maintain the set temperature; The integrated thermostat of the water tank detects that the water tank temperature is <40℃, triggering the electric water heater control module (201) to adjust the electric heating rod to maintain the set temperature according to the power supply signal.

10. The integrated solar photovoltaic, thermal storage heating, and hot water supply system according to claim 1, characterized in that: The photovoltaic power generation module (3) includes a light intensity monitoring unit (302), a photovoltaic power generation monitoring unit (303), and a photovoltaic panel (301). The photovoltaic panel is a photovoltaic array installed on the roof. The installation tilt angle of the photovoltaic panel is adjusted according to the local latitude, and the installation area of ​​the photovoltaic panel is adjusted according to the floor size.

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