A photovoltaic power generation-based energy storage device

Abstract

This utility model relates to the field of photovoltaic energy storage technology, and more particularly to an energy storage device based on photovoltaic power generation. The technical solution includes an energy storage cabinet and an energy storage battery pack. A heat-conducting backplate is fixed inside the energy storage cabinet near its rear surface. Several support plates are equidistantly fixed inside the energy storage cabinet. A heat-conducting pad is fixed to the upper surface of each support plate, and the rear surface of the heat-conducting pad is welded to the front surface of the heat-conducting backplate. Several heat-conducting partitions are equidistantly welded to the upper surface of each heat-conducting pad, and the rear surface of the partitions is welded to the front surface of the heat-conducting backplate. Several heat sinks are equidistantly welded to the rear surface of the heat-conducting backplate, and the heat sinks penetrate the rear surface of the energy storage cabinet. A heat dissipation cover is fixed to the rear surface of the energy storage cabinet. This utility model can release heat from inside the photovoltaic power generation energy storage cabinet in a timely manner through heat conduction, preventing outside air from entering the cabinet and bringing in dust, impurities, and moisture.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic energy storage technology, specifically to an energy storage device based on photovoltaic power generation. Background Technology

[0002] Photovoltaic energy storage is a technology that combines solar photovoltaic power generation systems with energy storage devices. Photovoltaic power generation converts light energy into electrical energy through solar panels, while energy storage systems (such as lithium batteries) can store energy when there is excess electricity and release it when there is insufficient sunlight or during peak electricity demand. This effectively solves the problems of intermittency and volatility in photovoltaic power generation, improves the stability and flexibility of power supply, and promotes the efficient integration of renewable energy into the power grid.

[0003] Current photovoltaic (PV) energy storage cabinets integrate a large number of energy storage battery packs and electronic components, which generate a significant amount of heat during operation. This heat needs to be dissipated promptly to prevent the internal temperature from rising and affecting the lifespan of the battery packs and electronic components, as well as to avoid safety accidents. However, existing PV energy storage cabinets typically use ventilation for heat dissipation. Outside air can easily bring dust and impurities into the cabinet, accumulating and adhering to the battery packs and electronic components, making cleaning difficult. It can also easily bring moisture into the cabinet, causing oxidation and corrosion of circuit boards and terminals, reducing insulation performance, and potentially leading to short circuits, leakage, and other safety hazards. Therefore, we propose a photovoltaic-based energy storage device. Utility Model Content

[0004] The purpose of this utility model is to provide an energy storage device based on photovoltaic power generation, which has the advantage of being able to release the heat inside the photovoltaic power generation energy storage cabinet in a timely manner through heat conduction, avoiding the entry of outside air into the cabinet and bringing in dust, impurities and moisture. This solves the problem that existing photovoltaic power generation energy storage cabinets usually use ventilation and heat dissipation methods, which not only easily bring dust and impurities into the cabinet and accumulate and adhere to the energy storage battery pack and electronic components, making them difficult to clean, but also easily bring moisture into the cabinet, causing oxidation and corrosion of circuit boards, wiring terminals, etc., reducing insulation performance, and potentially causing safety hazards such as short circuits and leakage.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an energy storage device based on photovoltaic power generation, comprising an energy storage cabinet and an energy storage battery pack. A heat-conducting backplate is fixed inside the energy storage cabinet near its rear surface. Several support plates are equidistantly fixed inside the energy storage cabinet. A heat-conducting pad is fixed to the upper surface of each support plate, and the rear surface of the heat-conducting pad is welded to the front surface of the heat-conducting backplate. Several heat-conducting partitions are equidistantly welded to the upper surface of each heat-conducting pad, and the rear surface of the partitions is welded to the front surface of the heat-conducting backplate. Several heat sinks are equidistantly welded to the rear surface of the heat-conducting backplate, and the heat sinks penetrate the rear surface of the energy storage cabinet. A heat dissipation hood is fixed to the rear surface of the energy storage cabinet. An air inlet is provided on the lower surface of the heat dissipation hood, and several air outlet pipes are equidistantly fixed to the upper surface of the heat dissipation hood. A cooling fan is fixed inside each air outlet pipe.

[0006] Preferably, a cabinet door is rotatably installed on the front surface of the energy storage cabinet.

[0007] Preferably, support blocks are fixed at the four corners of the lower surface of the energy storage cabinet.

[0008] Preferably, a protective net is fixed to the top of each of the air outlet pipes.

[0009] Preferably, a socket is provided on one side of the outer surface of the heat sink near the lower surface, and a filter screen is movably inserted into the socket.

[0010] Preferably, a limiting strip is fixed on the inner wall of the heat sink above the filter screen.

[0011] Preferably, a water pipe is fixed on the rear surface of the heat sink near the lower surface, and the water pipe penetrates the rear surface of the heat sink. A branch pipe is fixed at one end of the water pipe inside the heat sink, and a plurality of atomizing nozzles are fixed at equal intervals on the outer surface of the branch pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, by setting up an energy storage cabinet, a support plate, a thermally conductive pad, a thermally conductive partition, a thermally conductive back plate, heat sinks, a heat sink cover, an air inlet, a cooling fan, and an air outlet, achieves the effect of timely releasing the heat inside the photovoltaic power generation energy storage cabinet through heat conduction, preventing outside air from entering the cabinet and bringing in dust, impurities, and moisture. The energy storage battery packs are placed on the support plate, and each energy storage battery pack is located between two adjacent thermally conductive partitions. The heat generated by the energy storage battery packs during operation is transferred to the thermally conductive back plate through the thermally conductive partition and the thermally conductive pad. The heat from the thermally conductive back plate is then transferred to the heat sink. After the cooling fan is working, outside air enters the heat sink cover through the air inlet, contacts the heat sink, carries away the heat from the heat sink, and is finally discharged from the air outlet.

[0014] 2. This utility model achieves the effect of further improving the heat dissipation efficiency of the heat sink by setting up water pipes, branch pipes and atomizing nozzles. After the cold water inside the water pipes is sprayed into the heat sink through the branch pipes and atomizing nozzles, the atomized water evaporates and absorbs heat after contacting the heat sink, thus helping to improve the heat dissipation efficiency of the heat sink.

[0015] 3. This utility model, by setting up an insertion port, a filter screen, and a limiting strip, effectively prevents dust and impurities from entering the heat sink, while facilitating the removal and cleaning of the filter screen. The filter screen is inserted into the heat sink through the insertion port, with the lower edge of the filter screen contacting the bottom of the inner wall of the heat sink, and the limiting strip contacting the upper edge of the filter screen. Outside air passes through the filter screen to remove larger dust and impurities before entering the heat sink, thus effectively preventing dust and impurities from entering the heat sink. When cleaning the filter screen, it can be directly pulled out from the insertion port for cleaning. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 3 This is a partial three-dimensional cross-sectional view of the heat-conducting backplate and heat sink of this utility model;

[0019] Figure 4 This is a side view of the structure of this utility model.

[0020] Reference numerals in the attached diagram: 1. Energy storage cabinet; 2. Heat sink cover; 3. Cabinet door; 4. Energy storage battery pack; 5. Support block; 6. Support plate; 7. Thermally conductive back plate; 8. Thermally conductive partition; 9. Thermally conductive pad; 10. Limiting strip; 11. Air inlet; 12. Filter screen; 13. Inlet; 14. Branch pipe; 15. Atomizing nozzle; 16. Heat sink; 17. Air outlet pipe; 18. Cooling fan; 19. Protective net; 20. Water pipe. Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1

[0023] like Figures 1-4As shown, this utility model proposes an energy storage device based on photovoltaic power generation, including an energy storage cabinet 1 and an energy storage battery pack 4. The front surface of the energy storage cabinet 1 is open, and a cabinet door 3 is rotatably installed on the front surface of the energy storage cabinet 1. The cabinet door 3 and the energy storage cabinet 1 are rotatably connected by a hinge. A heat-conducting back plate 7 is fixed inside the energy storage cabinet 1 near the rear surface. Several support plates 6 are equidistantly fixed inside the energy storage cabinet 1. The support plates 6 are equidistantly distributed from top to bottom inside the energy storage cabinet 1. A heat-conducting pad 9 is fixed on the upper surface of each support plate 6, and the rear surface of the heat-conducting pad 9 is welded and fixed to the front surface of the heat-conducting back plate 7. The upper surface of each heat-conducting pad 9 is equidistant. Several thermally conductive partitions 8 are welded together. The thermally conductive partitions 8 are evenly distributed from left to right on the upper surface of the thermally conductive pad 9. The rear surface of the thermally conductive partitions 8 and the front surface of the thermally conductive back plate 7 are welded together. Several heat sinks 16 are evenly welded to the rear surface of the thermally conductive back plate 7. The heat sinks 16 penetrate the rear surface of the energy storage cabinet 1. The heat sinks 16 are evenly distributed from left to right on the rear surface of the thermally conductive back plate 7. A channel for air circulation is formed between two adjacent heat sinks 16. The energy storage battery pack 4 is placed on the support plate 6. Each energy storage battery pack 4 is located between two adjacent thermally conductive partitions 8. The excess electrical energy during photovoltaic power generation is stored inside the energy storage battery pack 4.

[0024] The heat sink 16 passes through the energy storage cabinet 1 and enters the interior of the heat dissipation shroud 2. The heat dissipation shroud 2 is fixed to the rear surface of the energy storage cabinet 1. An air inlet 11 is provided on the lower surface of the heat dissipation shroud 2. Several air outlet pipes 17 are fixed at equal intervals on the upper surface of the heat dissipation shroud 2. A cooling fan 18 is fixed inside each air outlet pipe 17. A protective net 19 is fixed to the top of each air outlet pipe 17. The protective net 19 protects the cooling fan 18 and prevents foreign objects from entering the air outlet pipe 17 and contacting the fan blades of the cooling fan 18, which could cause damage to the fan blades. Support blocks 5 are fixed near the four corners on the lower surface of the energy storage cabinet 1. An inlet 13 is provided on one side of the outer surface of the cover 2 near the lower surface. A filter screen 12 is movably inserted into the inlet 13. The lower edge of the filter screen 12 contacts the bottom of the inner wall of the heat sink cover 2. A limiting strip 10 is fixed on the inner wall of the heat sink cover 2 above the filter screen 12. The limiting strip 10 contacts the upper edge of the filter screen 12 and limits the filter screen 12. Outside air enters the heat sink cover 2 after filtering out larger dust and impurities through the filter screen 12, thus effectively preventing dust and impurities from entering the heat sink cover 2. When cleaning the filter screen 12, it can be directly pulled out from the inlet 13 for cleaning.

[0025] In use, the energy storage battery pack 4 is placed on the support plate 6, and each energy storage battery pack 4 is located between two adjacent heat-conducting partitions 8. The heat generated by the energy storage battery pack 4 during operation is transferred to the heat-conducting back plate 7 through the heat-conducting partitions 8 and heat-conducting pads 9. The heat of the heat-conducting back plate 7 is transferred to the heat sink 16. After the cooling fan 18 is working, the outside air enters the heat sink 2 from the air inlet 11 and comes into contact with the heat sink 16, carrying away the heat of the heat sink 16. Finally, it is discharged from the air outlet 17. Thus, the heat inside the energy storage cabinet 1 can be released in time through heat conduction, preventing outside air from entering the energy storage cabinet 1 and bringing in dust, impurities and moisture.

[0026] Example 2

[0027] like Figures 2-4 As shown, the present invention proposes an energy storage device based on photovoltaic power generation. Compared with the first embodiment, this embodiment further includes a water pipe 20 fixed at the position of the rear surface of the heat sink 2 near the lower surface, and the water pipe 20 penetrates the rear surface of the heat sink 2. A branch pipe 14 is fixed at one end of the water pipe 20 inside the heat sink 2. Several atomizing nozzles 15 are fixed at equal intervals on the outer surface of the branch pipe 14. The end of the water pipe 20 outside the heat sink 2 is connected to a cold water supply device.

[0028] In this embodiment, the cold water inside the water pipe 20 is sprayed into the heat sink 2 through the branch pipe 14 and the atomizing nozzle 15. After the atomized water comes into contact with the heat sink 16, it evaporates and absorbs heat, thus helping to improve the heat dissipation efficiency of the heat sink 16.

[0029] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An energy storage device based on photovoltaic power generation, comprising an energy storage cabinet (1) and an energy storage battery pack (4), characterized in that: A heat-conducting backplate (7) is fixed inside the energy storage cabinet (1) near the rear surface. Several support plates (6) are fixed at equal intervals inside the energy storage cabinet (1). A heat-conducting pad (9) is fixed to the upper surface of each support plate (6), and the rear surface of the heat-conducting pad (9) is welded to the front surface of the heat-conducting backplate (7). Several heat-conducting partitions (8) are welded at equal intervals to the upper surface of each heat-conducting pad (9), and the rear surface of the heat-conducting partitions (8) is welded to the front surface of the heat-conducting backplate (7). 7) The front surface is welded and fixed. Several heat sinks (16) are welded at equal intervals on the rear surface of the heat-conducting back plate (7), and the heat sinks (16) penetrate the rear surface of the energy storage cabinet (1). A heat sink cover (2) is fixed on the rear surface of the energy storage cabinet (1). An air inlet (11) is provided on the lower surface of the heat sink cover (2). Several air outlet pipes (17) are fixed at equal intervals on the upper surface of the heat sink cover (2). A cooling fan (18) is fixed inside each air outlet pipe (17).

2. The energy storage device based on photovoltaic power generation according to claim 1, characterized in that: The energy storage cabinet (1) has a cabinet door (3) rotatably mounted on its front surface.

3. The energy storage device based on photovoltaic power generation according to claim 1, characterized in that: Support blocks (5) are fixed on the lower surface of the energy storage cabinet (1) near the four corners.

4. The energy storage device based on photovoltaic power generation according to claim 1, characterized in that: Each of the aforementioned air outlet pipes (17) has a protective net (19) fixed at its top.

5. The energy storage device based on photovoltaic power generation according to claim 1, characterized in that: A socket (13) is provided on one side of the outer surface of the heat sink (2) near the lower surface, and a filter screen (12) is movably inserted into the socket (13).

6. The energy storage device based on photovoltaic power generation according to claim 5, characterized in that: A limiting strip (10) is fixed to the inner wall of the heat sink (2) above the filter screen (12).

7. The energy storage device based on photovoltaic power generation according to claim 1, characterized in that: A water pipe (20) is fixed on the rear surface of the heat sink (2) near the lower surface, and the water pipe (20) penetrates the rear surface of the heat sink (2). A branch pipe (14) is fixed at one end of the water pipe (20) inside the heat sink (2), and several atomizing nozzles (15) are fixed at equal intervals on the outer surface of the branch pipe (14).

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