Solar energy electric heating combined storage energy box

Abstract

The invention discloses a solar energy electric heat combined storage energy box, and relates to the field of solar energy equipment, the solar energy electric heat combined storage energy box comprises a water storage tank, a storage battery and a control module, the water storage tank is used for communicating with an external photovoltaic photo-thermal integrated assembly, the storage battery is used for being electrically connected with the external photovoltaic photo-thermal integrated assembly, the water storage tank is electrically connected with the storage battery, and the control module is electrically connected with the storage battery. The control module is arranged on the water storage tank, an opening is formed in the top of the enclosure assembly, the storage battery is arranged in the enclosure assembly, the spraying assembly is arranged above the storage battery, and the spraying assembly is communicated with the water storage tank. The method has the advantages that the use safety of equipment is improved, and the energy utilization rate is increased.

Description

Technical Field

[0001] This application relates to the field of solar energy technology, specifically to a solar-electric combined heat and power energy storage box. Background Technology

[0002] Traditional solar water heaters primarily rely on solar collectors to gather heat to heat water. Their function is relatively limited, only providing hot water. They cannot operate normally at night or when sunlight is insufficient, requiring auxiliary electric heating devices to ensure a hot water supply. This not only increases energy consumption but also fails to store and utilize electrical energy. Electric water heaters, on the other hand, directly heat water using electricity. While their operation is not limited by sunlight conditions, they consume more energy and lack solar energy utilization capabilities, failing to fully utilize clean energy. Neither of these traditional water heater types can simultaneously meet users' needs for both hot water and electricity, exhibiting significant shortcomings in terms of energy utilization diversity and flexibility.

[0003] With the global energy structure accelerating its transition to clean energy, solar energy, as an abundant, clean, and renewable energy source, has received widespread attention for its development and utilization. Photovoltaic-thermal integrated technology, as an important method of solar energy utilization, simultaneously achieves photothermal and photovoltaic conversion, providing users with domestic hot water and electricity, effectively improving the overall utilization efficiency of solar energy. It has shown great application potential in residential and commercial buildings. However, existing photovoltaic-thermal water heaters still suffer from low energy efficiency and relatively low safety during use. Summary of the Invention

[0004] This application aims to address one of the technical problems in related technologies to a certain extent. To this end, this application provides a solar-electric combined heat and power energy storage box, which has the advantages of improving equipment safety and increasing energy utilization efficiency.

[0005] To achieve the above objectives, this application adopts the following technical solution: A solar-electric-thermal integrated energy storage box includes a water tank, a battery, and a control module. The water tank is connected to an external photovoltaic-thermal integrated module, and the battery is electrically connected to the external photovoltaic-thermal integrated module. The water tank is electrically connected to the battery, and the control module is mounted on the water tank. The box also includes an enclosure assembly and a sprinkler assembly. The enclosure assembly has an opening at its top, the battery is disposed within the enclosure assembly, and the sprinkler assembly is positioned above the battery and connected to the water tank.

[0006] The solar-electric-thermal combined storage energy box provided in this application dynamically adjusts the distribution of heat and electricity generated by the integrated photovoltaic and solar thermal modules through a control module. When the temperature of the hot water storage tank is low, the heat generated by the integrated photovoltaic and solar thermal modules is used first to heat the hot water in the tank, while the electricity is used to charge the battery. As the temperature in the hot water tank rises and the solar thermal heating efficiency decreases with the temperature increase, the electricity generated by the integrated photovoltaic and solar thermal modules is used to heat the hot water in the tank until the set maximum temperature of the tank is reached. On cloudy or rainy days, when the target temperature cannot be reached by solar thermal and solar photovoltaic heating during the day, or when the water temperature drops at night due to use, the battery electricity is used to heat the water. This staggered use of both low-grade heat and high-grade electricity generated by the integrated photovoltaic and solar thermal modules improves the efficiency of solar energy utilization. Furthermore, by setting up enclosure components and sprinkler components, the battery is independently encapsulated in the enclosure components, forming a physical separation from the water storage tank. In the event of potential battery overheating and runaway, water in the storage tank flows into the enclosure components through the sprinkler components, preventing the battery from catching fire and the spread of flames.

[0007] Optionally, the sprinkler assembly includes a sprinkler pipe and a solenoid valve. The sprinkler pipe is connected to the water storage tank and is positioned above the battery. The solenoid valve is positioned on the sprinkler pipe and is electrically connected to the control module. The enclosure assembly includes a housing and a temperature sensor. The top of the housing has an opening. The battery is positioned inside the housing, and the temperature sensor is positioned on the inner wall of the housing.

[0008] Optionally, the water storage tank includes a tank body, a coil heat exchanger, and a heating pipe. The control module is located on the outer wall of the tank body. The two ends of the coil heat exchanger are used to connect to the external photovoltaic-thermal integrated module. The heating pipe is electrically connected to the battery.

[0009] Optionally, the system also includes multiple gravity heat pipes, with the enclosure assembly positioned below the water storage tank; the battery comprises multiple individual cells connected in series, with the evaporation section of the gravity heat pipe bonded between two adjacent individual cells, and the evaporation section of the gravity heat pipe fixed to the individual cells by thermally conductive adhesive; a concave thermally conductive groove is formed at the bottom of the water storage tank, and the condensation section of the gravity heat pipe is disposed within the thermally conductive groove.

[0010] Optionally, the enclosure assembly further includes a flame retardant disposed at the bottom of the containment box.

[0011] Optionally, the enclosure assembly further includes a liquid level sensor disposed on the side wall inside the containment tank, and the liquid level sensor is electrically connected to the control module.

[0012] Optionally, the water storage tank and the container are arranged side by side in a horizontal direction, and the spray pipe is connected to the water tank through a connecting pipe. One end of the connecting pipe is connected to the spray pipe, and the other end of the connecting pipe is connected to the bottom of the water storage tank.

[0013] Optionally, a negative pressure air inlet valve is provided on the top of the water storage tank.

[0014] These features and advantages of this application will be disclosed in detail in the following specific embodiments and accompanying drawings. The best embodiments or means of this application will be shown in detail in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of this application. In addition, each of these features, elements and components appearing in the following text and drawings is multiple and is labeled with different symbols or numbers for convenience, but all represent parts with the same or similar structure or function. Attached Figure Description

[0015] The following description, in conjunction with the accompanying drawings, further illustrates this application: Figure 1 This is a schematic diagram of the structure of one embodiment of this application; Figure 2 This is a schematic diagram showing the connection between the solar-electric thermal energy storage box and the external photovoltaic-thermal integrated module in the above embodiment; Figure 3 This is a schematic diagram of another embodiment of the present application; Figure 4 This is a schematic diagram of another embodiment of the present application.

[0016] Among them, 10, water storage tank; 10a, heat conduction groove; 11, water tank body; 12, coil heat exchanger; 13, heating pipe; 20, spray assembly; 21, solenoid valve; 22, spray pipe; 30, control module; 40, negative pressure air inlet valve; 50, enclosure assembly; 51, container box; 52, liquid level sensor; 53, flame retardant; 60, storage battery; 70, gravity heat pipe; 80, connecting pipe; 90, external photovoltaic-thermal integrated assembly; 91, thermally conductive adhesive. Detailed Implementation

[0017] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this application and should not be construed as limiting it.

[0018] The terms "an embodiment," "example," or "example" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this application. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0019] This embodiment provides a solar-electric combined heat and power energy storage box, such as... Figure 1 and Figure 2 As shown, the system includes a water storage tank 10, a battery 60, and a control module 30. The water storage tank 10 is used to communicate with an external photovoltaic-thermal integrated module 90, and the battery 60 is used to be electrically connected to the external photovoltaic-thermal integrated module 90. The water storage tank 10 is electrically connected to the battery 60. The control module 30 is mounted on the water storage tank 10. The system also includes an enclosure component 50 and a sprinkler component 20. The enclosure component 50 has an opening at its top, the battery 60 is disposed inside the enclosure component 50, and the sprinkler component 20 is disposed above the battery 60 and is connected to the water storage tank 10. It should be noted that the battery in this embodiment is a lithium iron phosphate battery.

[0020] The sprinkler assembly includes a sprinkler pipe 22 and a solenoid valve 21. The sprinkler pipe 22 is connected to the water storage tank 10 and is located above the battery 60. The solenoid valve 21 is located on the sprinkler pipe 22 and is electrically connected to the control module 30. The enclosure assembly 50 includes a housing 51 and a temperature sensor. The top of the housing 51 has an opening. The battery 60 is located inside the housing 51, and the temperature sensor is located on the inner wall of the housing 51.

[0021] The external photovoltaic-thermal integrated module 90 includes a photovoltaic panel, a backsheet, and a heat collection structure. The module converts light into electricity through the photovoltaic panel and absorbs light into heat through the backsheet and heat collection structure, thus improving the utilization rate of natural energy. The solar-electric-thermal combined storage box provided in this embodiment dynamically adjusts energy distribution through the control module 30. During periods of sufficient sunshine, it prioritizes charging the battery 60, using the remaining heat to heat the water tank. On cloudy days or at night, it uses the battery 60's electrical energy to maintain the water temperature, ensuring uninterrupted energy utilization. Furthermore, by setting up the enclosure component 50 and the sprinkler component 20, the battery 60 is independently encapsulated within the enclosure component 50, forming a physical separation from the water tank 10. When the temperature data received by the temperature sensor exceeds a set threshold, indicating a potential battery overheating and runaway, the control module 30 controls the solenoid valve 21 to open the sprinkler pipe 22. The sprinkler pipe 22 is positioned above the battery 60 to ensure that the liquid can evenly cover the surface of the battery 60, cooling the battery and preventing localized overheating that could lead to a fire. It should be noted that the battery 60 has a maximum capacity of 5 kWh, and the enclosure component 50 is not completely sealed. Therefore, even if a battery overheating and runaway occurs, it will not cause a violent fire or explosion, thus ensuring user safety.

[0022] Understandably, the housing 51 is made of a thermally conductive alloy, such as aluminum alloy. To further enhance the heat dissipation of the housing 51, multiple heat dissipation fins are provided at the bottom of the housing 51.

[0023] In one optional embodiment, the water storage tank 10 includes a tank body 11, a coil heat exchanger 12, and a heating pipe 13. The control module 30 is disposed on the outer wall of the tank body 11. The two ends of the coil heat exchanger 12 are used to communicate with an external photovoltaic-thermal integrated module 90. The heating pipe 13 is electrically connected to the battery 60.

[0024] Since the external photovoltaic-thermal integrated module 90 and the coil heat exchanger 12 are connected to form a circulation loop, the medium inside the external photovoltaic-thermal integrated module 90 absorbs heat under the action of sunlight. After absorbing heat, the medium exchanges heat with the water in the water tank 11 when passing through the coil heat exchanger 12, thereby raising the water temperature in the water tank 11. When the water temperature rises to a certain level and simple heat exchange cannot continue to raise the water temperature, the electrical energy stored in the battery 60 can be used to continue heating the water in the water tank 11 through the heating tube 13.

[0025] Optionally, such as Figure 3As shown, it also includes multiple gravity heat pipes 70, and the enclosure component 50 is located below the water storage tank 10; the battery 60 includes multiple single cells connected in series, the evaporation section of the gravity heat pipe 70 is attached between two adjacent single cells, and the evaporation section of the gravity heat pipe 70 is fixed to the single cell by thermally conductive adhesive 91; a concave thermally conductive groove 10a is formed at the bottom of the water storage tank 10, and the condensation section of the gravity heat pipe 70 is located in the thermally conductive groove 10a.

[0026] The heat generated by the battery 60 during operation causes the heat transfer medium (such as pure water, ammonia, or acetone) inside the gravity heat pipe 70 to absorb heat and vaporize, forming high-pressure steam. The steam rises along the gravity heat pipe 70 to the condensation section, releasing heat to the water storage tank 10. The steam then condenses back into liquid, and the condensed liquid flows back to the evaporation section under gravity, forming a closed-loop cycle. This completes the unidirectional heat transfer process from the battery 60 to the water storage tank 10, improving the heat dissipation effect of the battery 60, reducing the risk of the battery 60 catching fire due to high temperature, and also improving the waste heat utilization rate. The evaporation section of the gravity heat pipe 70 is fixed to the individual battery cells using thermally conductive adhesive 91, further improving the overall heat transfer performance. In this embodiment, the gravity heat pipe 70 is a microchannel gravity heat pipe, 2mm to 4mm thick, made of aluminum, and bendable.

[0027] In an alternative embodiment, the enclosure component 50 further includes a flame retardant 53 disposed at the bottom of the housing 51.

[0028] During a fire in the battery 60, if water is directly poured into the containment tank 51, leakage in the battery 60 may cause water electrolysis, generating hydrogen and oxygen, which could intensify the combustion process. By adding flame retardant 53 to the bottom of the containment tank 51, the flame retardant 53 dissolves in the water as it enters the containment tank 51 through the spray pipe 22, reducing the possibility of intensified combustion caused by water electrolysis and further ensuring safety. Specifically, the flame retardant 53 can be ammonium polyphosphate, which releases phosphorus-containing free radicals when heated, capturing hydrogen and hydroxyl free radicals in the combustion chain reaction and interrupting the combustion process. It should be noted that, as mentioned above, the maximum energy storage capacity of the battery 60 provided in this embodiment is 5 kWh, which is relatively low. The amount of water required for the containment tank 51 is also relatively small, and even if water electrolysis occurs, it will not produce enough gas. Furthermore, the containment tank 51 is not a completely sealed structure; it has an opening at the top. Even if water electrolysis occurs in the containment tank 51, the generated gas will escape in time, minimizing its effect on intensifying combustion. Even without adding flame retardant 53, the device provided in this embodiment still complies with electrical safety guidelines.

[0029] Optionally, the enclosure assembly 50 also includes a liquid level sensor 52, which is disposed on the side wall inside the housing 51 and is electrically connected to the control module 30.

[0030] To prevent excessive water from overflowing into the container 51, a liquid level sensor 52 is installed on the side wall of the container 51 at a distance of 5cm to 10cm from the top. When the water level reaches this position, the liquid level sensor 52 sends the received liquid level signal to the control module 30. The control module 30 controls the solenoid valve 21 to close and the spray pipe 22 to stop supplying water.

[0031] In this embodiment, the relative positions of the water storage tank 10 and the receiving tank 51 are not specifically limited, as long as they meet the requirements of compact structure, reduced space occupation, and sufficient water in the water storage tank 10 to enter the receiving tank 51. Besides the vertical distribution method mentioned in the above embodiments, in an optional embodiment, such as... Figure 4 As shown, the water storage tank 10 and the container 51 are arranged side by side in the horizontal direction. The spray pipe 22 is connected to the water tank through the connecting pipe 80. One end of the connecting pipe 80 is connected to the spray pipe 22, and the other end of the connecting pipe 80 is connected to the bottom of the water storage tank 10. The water in the water tank smoothly enters the container 51 through the connecting pipe 80. The different distribution of the water storage tank 10 and the container 51 can meet different installation space requirements.

[0032] Optionally, a negative pressure air inlet valve 40 is provided on the top of the water storage tank 10. By setting the negative pressure air inlet valve 40, water can be ensured to flow out of the water storage tank 10 when the water supply is stopped.

[0033] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Those skilled in the art should understand that this application includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this application will be included within the scope of the claims.

Claims

1. A solar-electric-thermal integrated energy storage box, comprising a water tank, a battery, and a control module, wherein the water tank is used to communicate with an external photovoltaic-thermal integrated module, the battery is used to be electrically connected to the external photovoltaic-thermal integrated module, the water tank is electrically connected to the battery, and the control module is disposed on the water tank, characterized in that, It also includes an enclosure assembly and a sprinkler assembly. The enclosure assembly has an opening at the top, the battery is disposed inside the enclosure assembly, the sprinkler assembly is disposed above the battery, and the sprinkler assembly is connected to the water storage tank. The sprinkler assembly includes a sprinkler pipe and a solenoid valve. The sprinkler pipe is connected to the water storage tank and disposed above the battery. The solenoid valve is disposed on the sprinkler pipe and is electrically connected to the control module. The enclosure assembly includes a housing and a temperature sensor. The housing has an opening at the top, the battery is disposed inside the housing, and the temperature sensor is disposed on the inner wall of the housing.

2. The solar-electric combined heat and power energy storage box according to claim 1, characterized in that, The water storage tank includes a tank body, a coil heat exchanger, and a heating tube. The control module is located on the outer wall of the tank body. The two ends of the coil heat exchanger are used to connect to the external photovoltaic-thermal integrated module. The heating tube is electrically connected to the battery.

3. The solar-electric combined heat and power energy storage box according to claim 1, characterized in that, It also includes multiple gravity heat pipes, and the enclosure assembly is located below the water storage tank; the battery includes multiple individual cells connected in series, the evaporation section of the gravity heat pipe is attached between two adjacent individual cells, and the evaporation section of the gravity heat pipe is fixed to the individual cells by thermally conductive adhesive; a concave thermally conductive groove is formed at the bottom of the water storage tank, and the condensation section of the gravity heat pipe is located in the thermally conductive groove.

4. The solar-electric combined heat and power energy storage box according to claim 1, characterized in that, The enclosure assembly also includes a flame retardant disposed at the bottom of the containment tank.

5. The solar-electric combined heat and power storage box according to claim 4, characterized in that, The enclosure assembly also includes a liquid level sensor, which is disposed on the side wall inside the container and is electrically connected to the control module.

6. The solar-electric combined heat and power energy storage box according to claim 1, characterized in that, The water storage tank and the container are arranged side by side in a horizontal direction. The spray pipe is connected to the water tank through a connecting pipe. One end of the connecting pipe is connected to the spray pipe, and the other end of the connecting pipe is connected to the bottom of the water storage tank.

7. The solar-electric combined heat and power storage box according to claim 1, characterized in that, The top of the water storage tank is equipped with a negative pressure air inlet valve.

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