Outdoor photovoltaic energy storage equipment and energy storage system

Abstract

The invention relates to the technical field of photovoltaic energy storage equipment, in particular to outdoor photovoltaic energy storage equipment and an energy storage system.The outdoor photovoltaic energy storage equipment is characterized in that a cooling cavity is formed in the side face of an energy storage cabinet, a circulating water pump is arranged at the bottom of a supporting seat, a supporting plate is arranged on the outer side face of the energy storage cabinet, a positioning groove is formed in the surface of a liquid storage box, and a main controller is arranged in a protective door; the main controller is electrically connected with the circulating water pump and the electric push rod, and a temperature sensor and a water level sensor are arranged on the inner side face of the sealing baffle. The energy storage cabinet has the beneficial effects that the energy storage battery can be placed in the energy storage cabinet for placement protection, when the surface temperature of the energy storage cabinet is too high, cooling liquid can be pumped into the cooling cavity formed in the side face of the energy storage cabinet through cooperation of the main controller and the circulating water pump, and on one hand, heat transfer can be reduced through the cooling cavity formed in the side face of the energy storage cabinet; on the other hand, the temperature of the surface of the energy storage cabinet can be further reduced by injecting cooling liquid into the cooling cavity, so that protection on the energy storage battery is improved, and the internal temperature of the energy storage cabinet is prevented from being too high.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic energy storage equipment, specifically to an outdoor photovoltaic energy storage device and energy storage system. Background Technology

[0002] Photovoltaic energy storage, also known as solar photovoltaic energy storage system, is an energy utilization method that combines solar photovoltaic power generation with energy storage technology. It converts solar energy into electrical energy through photovoltaic panels and stores this electrical energy using energy storage devices (such as battery packs) so that it can supply power when needed. The energy storage batteries are generally installed in a container-like energy storage cabinet and are usually placed outdoors for energy storage.

[0003] In existing technologies, the casing of energy storage cabinets is generally made of a single layer of metal material. This makes the operating environment of the energy storage battery highly susceptible to the influence of external temperature. Since photovoltaic energy storage is generally installed outdoors where there is long hours of sunshine, if it is exposed to sunlight for a long time and the external temperature rises, the temperature inside the energy storage cabinet will remain high for a long time. At the same time, the energy storage battery itself will also generate a lot of heat during use. Therefore, the superposition of various heat sources makes it impossible to guarantee the operating environment of the energy storage battery. It is very easy for the energy storage battery to become unusable due to overheating or even cause fires and explosions, posing safety hazards. To address these issues, this invention proposes an outdoor photovoltaic energy storage device and energy storage system to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide an outdoor photovoltaic energy storage device and energy storage system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an outdoor photovoltaic energy storage device, comprising: an energy storage cabinet, a support base provided on the inner side of the energy storage cabinet, an energy storage battery provided on the surface of the support base, a cooling cavity opened on the side of the energy storage cabinet, a circulating water pump provided at the bottom of the support base, and a support plate provided on the outer side of the energy storage cabinet; The liquid storage tank has a positioning groove on its surface; The electric linear actuator has a base plate at its lifting end, and a sealing plate is provided on the surface of the base plate. The protective door contains a main controller, which is electrically connected to the circulating water pump and the electric push rod. A sealing baffle is provided, and a temperature sensor and a water level sensor are installed on the inner side of the sealing baffle.

[0006] Preferably, the energy storage cabinet has a mounting frame on its surface, a photovoltaic panel on its surface, the photovoltaic panel being electrically connected to the main controller, electric push rod and circulating water pump, a support plate being fixedly connected to the outer side of the energy storage cabinet, a storage tank being provided on the side of the energy storage cabinet, a sealing plate being connected to the side of the storage tank by a hinge, an auxiliary photovoltaic panel being placed inside the storage tank, and a drain outlet being provided on the surface of the storage tank.

[0007] Preferably, the electric push rod is fixedly connected to the bottom of the support base, the energy storage battery is installed on the surface of the support base, the bottom of the support base is provided with a protective frame, the protective frame is an "L" shaped plate structure, the input end of the circulating water pump is fitted with a water pipe, one end of the water pipe is inserted into the liquid storage tank, the output end of the circulating water pump is provided with a water delivery pipe, one end of the water delivery pipe is inserted into the cooling chamber, a positioning frame is provided in the cooling chamber, and the water delivery pipe is fixedly connected in the positioning frame.

[0008] Preferably, the protective door seals and covers the side of the cooling chamber, the temperature sensor and the water level sensor are electrically connected to the main controller, the bottom of the cooling chamber has a water outlet, the side of the cooling chamber has a positioning slot, a fixing seat is provided inside the cooling chamber, and the temperature sensor and the water level sensor are fixedly connected to the side of the protective door.

[0009] Preferably, the fixed base has a movable groove on its side, a guide rod is provided on the end face of the movable groove, a limiting spring and a positioning rod are sleeved on the surface of the guide rod, one end of the positioning rod is inserted into the positioning slot, a movable hole is provided on the end face of the positioning rod, the positioning rod is slidably connected to the guide rod through the movable hole, one end of the limiting spring is fixedly connected to the end face of the positioning rod, and the other end of the limiting spring is fixedly connected to the end face of the movable groove.

[0010] Preferably, the bottom of the support plate is provided with a positioning block, which is a square plate structure. The positioning block is inserted into the positioning groove, the liquid storage tank is buried in the ground, and the lifting end of the electric push rod is inserted into the liquid storage tank.

[0011] Preferably, the inner side of the fixed seat is provided with a traction plate. The traction plate has an overall "L" shaped plate structure. There are two sets of traction plates. The two sets of traction plates are symmetrically distributed about the center line of the long side of the fixed seat. The two sets of traction plates are respectively provided with a first cleaning plate and a second cleaning plate. The sides of the first cleaning plate and the second cleaning plate are provided with rubber pads, and the rubber pads are in contact with the side of the cooling cavity.

[0012] Preferably, the base plate is fixedly connected to the lifting end of the electric push rod, the base plate has a square plate structure, the sealing plate is fixedly connected to the surface of the base plate, the sealing plate has a square plate structure, and the sealing plate is inserted into the water outlet.

[0013] Preferably, a metal gasket is provided on the side of the sealing plate. The metal gasket is elastic, and one end of the metal gasket is fixedly connected to the side of the sealing plate. A placement groove is provided on the side of the sealing plate, and a positioning spring is provided on the end face of the placement groove. One end of the positioning spring is fixedly connected to the end face of the placement groove, and the other end of the positioning spring is fixedly connected to the inner side of the metal gasket. The metal gasket has a square plate structure, and multiple sets of metal gaskets are provided, with multiple sets of metal gaskets arranged around the sealing plate.

[0014] An energy storage system includes the aforementioned outdoor photovoltaic energy storage device.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The outdoor photovoltaic energy storage device and system proposed in this invention can place the energy storage battery inside the energy storage cabinet for protection during use. When the surface temperature of the energy storage cabinet is too high, the main controller, in conjunction with the circulating water pump, can first pump coolant into the cooling chamber opened on the side of the energy storage cabinet. On the one hand, the cooling chamber opened on the side of the energy storage cabinet can reduce heat transfer, and on the other hand, the surface temperature of the energy storage cabinet can be further reduced by injecting coolant into the cooling chamber, thereby improving the protection of the energy storage battery and preventing the internal temperature of the energy storage cabinet from becoming too high. Attached Figure Description Figure 1 This is a schematic diagram of the liquid storage tank at the bottom of the device of the present invention being buried in the soil; Figure 2 This is a schematic diagram of the device of the present invention; Figure 3 This is a schematic diagram of the structure of the device of the present invention after the liquid storage tank is removed; Figure 4 This is a schematic diagram of the structure of the device of the present invention when tilted after cross-section. Figure 5 for Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a cross-sectional view of the device of the present invention; Figure 7 This is a schematic diagram of the energy storage cabinet structure of the present invention; Figure 8 This is a partial sectional view of the energy storage cabinet of the present invention; Figure 9 for Figure 8 Enlarged structural diagram at point B; Figure 10 This is a schematic diagram of the sealing baffle structure of the present invention; Figure 11 This is a schematic diagram of the sealing plate structure of the present invention; Figure 12 This is a partial cross-sectional view of the sealing plate of the present invention; Figure 13 This is a schematic diagram of the energy storage cabinet of the present invention when tilted; Figure 14 for Figure 13 Enlarged structural diagram at point C; Figure 15 This is a side view of the energy storage cabinet of the present invention; Figure 16 This is a cross-sectional view of the structure of the present invention; Figure 17 for Figure 16 Enlarged structural diagram at point D; Figure 18 This is a schematic diagram of the traction plate structure of the present invention.

[0016] In the diagram: 1. Energy storage cabinet; 2. Support base; 3. Energy storage battery; 4. Cooling chamber; 5. Circulating water pump; 6. Electric push rod; 7. Support plate; 8. Liquid storage tank; 9. Positioning slot; 10. Base plate; 11. Sealing plate; 12. Protective door; 13. Main controller; 14. Sealing baffle; 15. Temperature sensor; 16. Water level sensor; 17. Mounting bracket; 18. Photovoltaic panel; 19. Protective frame; 20. Water pipe; 21. Water delivery pipe; 22. Positioning bracket; 23. Outlet; 24. Positioning slot; 25. Fixing base; 26. Traction plate; 27. First cleaning plate; 28. Second cleaning plate; 29. ​​Rubber pad; 30. Moving slot; 31. Guide rod; 32. Limiting spring; 33. Positioning rod; 34. Moving hole; 35. Positioning block; 36. Metal gasket; 37. Placement slot; 38. Positioning spring; 39. Storage slot; 40. Hinge; 41. Sealing plate; 42. Auxiliary photovoltaic panel; 43. Drain. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1: Please refer to Figures 1-15This invention provides a technical solution: an outdoor photovoltaic energy storage device, comprising: an energy storage cabinet 1, a support base 2 provided on the inner side of the energy storage cabinet 1, an energy storage battery 3 provided on the surface of the support base 2, a cooling cavity 4 opened on the side of the energy storage cabinet 1, a circulating water pump 5 provided at the bottom of the support base 2, and a support plate 7 provided on the outer side of the energy storage cabinet 1; a liquid storage tank 8, a positioning groove 9 opened on the surface of the liquid storage tank 8; an electric push rod 6, a base plate 10 provided at the lifting end of the electric push rod 6, and a sealing plate 11 provided on the surface of the base plate 10; a protective door 12, a main controller 13 provided inside the protective door 12, the main controller 13 being electrically connected to the circulating water pump 5 and the electric push rod 6; and a sealing baffle 14, a temperature sensor 15 and a water level sensor 16 provided on the inner side of the sealing baffle 14; When in use, the energy storage battery 3 can be placed inside the energy storage cabinet 1 for protection. When the surface temperature of the energy storage cabinet 1 is too high, the main controller 13, in conjunction with the circulating water pump 5, can first pump the coolant into the cooling chamber 4 opened on the side of the energy storage cabinet 1. On the one hand, the cooling chamber 4 opened on the side of the energy storage cabinet 1 can reduce the heat transfer. On the other hand, the coolant injected into the cooling chamber 4 can further reduce the surface temperature of the energy storage cabinet 1, thereby improving the protection of the energy storage battery 3 and preventing the internal temperature of the energy storage cabinet 1 from becoming too high.

[0019] In addition, a storage tank 39 is provided for convenient equipment maintenance. The storage tank 39 is provided on the side of the energy storage cabinet 1. A sealing plate 41 is connected to the side of the storage tank 39 by a hinge 40. An auxiliary photovoltaic panel 42 is placed inside the storage tank 39. A drain outlet 43 is provided on the surface of the storage tank 39. When the outdoor photovoltaic panel 18 is damaged, the sealing plate 11 can be rotated in conjunction with the hinge 40 to remove the seal of the sealing plate 41 on the storage tank 39. Then the auxiliary photovoltaic panel 42 can be removed from the storage tank 39, and the damaged photovoltaic panel 18 can be replaced to facilitate the normal operation of the energy storage cabinet 1. The sealing plate 41 is fixed by a lock, and the drain outlet 43 is designed to prevent water accumulation in the storage tank 39 from affecting the storage of the auxiliary photovoltaic panel 42.

[0020] Example 2: Based on Example 1, a cooling chamber 4 is provided to facilitate cooling inside the energy storage cabinet 1. An electric push rod 6 is fixedly connected to the bottom of the support base 2. The energy storage battery 3 is installed on the surface of the support base 92. A protective frame 19 is provided at the bottom of the support base 2. The protective frame 19 has an "L"-shaped plate structure. A water pipe 20 is fitted onto the input end of the circulating water pump 5, with one end of the water pipe 20 inserted into the liquid storage tank 8. A water delivery pipe 21 is provided at the output end of the circulating water pump 5, with one end of the water delivery pipe 21 inserted into the cooling chamber 4. A positioning frame 22 is provided inside the cooling chamber 4, and the water delivery pipe 21 is fixedly connected to the positioning frame 22. A protective door 12 seals and covers the sides of the cooling chamber 4. Temperature sensor 15 and water level sensor 16 are connected to... The main controller 13 is electrically connected. A water outlet 23 is opened at the bottom of the cooling chamber 4. A positioning slot 24 is opened on the side of the cooling chamber 4. A fixed seat 25 is set inside the cooling chamber 4. The temperature sensor 15 and the water level sensor 16 are fixedly connected to the side of the protective door 12. A mounting bracket 17 is set on the surface of the energy storage cabinet 1. A photovoltaic panel 18 is set on the surface of the mounting bracket 17. The photovoltaic panel 18 is electrically connected to the main controller 13, the electric push rod 6 and the circulating water pump 5. The support plate 7 is fixedly connected to the outer side of the energy storage cabinet 1. A positioning block 35 is set at the bottom of the support plate 7. The positioning block 35 has a square plate structure and is inserted into the positioning slot 9. The liquid storage tank 8 is buried in the ground. The lifting end of the electric push rod 6 is inserted into the liquid storage tank 8. In use, the storage tank 8 is first buried in the ground. Then, the positioning block 35 at the bottom of the support plate 7 is inserted into the positioning groove 9 and fixed with positioning bolts. The energy storage battery 3 inside the energy storage cabinet 1 can then conveniently store the electrical energy converted from the photovoltaic panels. When the temperature of the energy storage cabinet 1 becomes too high due to prolonged exposure to sunlight, the temperature sensor 15 will detect the high temperature, and the main controller 13 will start the circulating water pump 5. Using the cooperation of the water pipe 20 and the water delivery pipe 21, the coolant in the storage tank 8 can be pumped into the cooling chamber 4. The position sensor 16 is configured to stop the circulating water pump 5 when the coolant in the cooling chamber 4 reaches a certain height. This reduces the internal temperature of the energy storage cabinet 1 by injecting coolant, preventing it from becoming too high. When the air temperature drops at night, the main controller 13 can control the electric push rod 6 to disengage the sealing plate 11 from the outlet 23, allowing the coolant to be re-injected into the storage tank 8. Since the storage tank 8 is buried in the ground, the low temperature in the ground can lower the coolant temperature, facilitating continued use during the day. The photovoltaic panel 18 provides power to the main controller 13, the circulating water pump 5, and the electric push rod 6.

[0021] To facilitate the cleaning of dirt adhering to the side wall of the cooling cavity 4, a first cleaning plate 27 and a second cleaning plate 28 are provided. A traction plate 26 is provided on the inner side of the fixing base 25. The traction plate 26 has an overall "L" shaped plate structure. There are two sets of traction plates 26. The two sets of traction plates 26 are symmetrically distributed about the center line of the long side of the side of the fixing base 25. The two sets of traction plates 26 are respectively provided with the first cleaning plate 27 and the second cleaning plate 28. Rubber pads 29 are provided on the sides of the first cleaning plate 27 and the second cleaning plate 28. The rubber pads 29 are in contact with the side of the cooling cavity 4. When it is necessary to clean the side wall of the cooling cavity 4, the first cleaning plate 27 and the second cleaning plate 28 can be moved by pulling the fixed seat 25 and using the two sets of traction plates 26. The fixed seat 25, together with the two sets of traction plates 26, can easily support the first cleaning plate 27 and the second cleaning plate 28, so that the rubber pads 29 set on the side of the first cleaning plate 27 and the second cleaning plate 28 can contact the side wall of the cooling cavity 4. After the first cleaning plate 27 and the second cleaning plate 28 are in contact, they are the same as the outer contour of the cooling cavity 4. Therefore, when the first cleaning plate 27 and the second cleaning plate 28 are pulled out, the dirt attached to the side wall of the cooling cavity 4 can be scraped off by the rubber pads 29.

[0022] Example 3: Based on Example 2, in order to facilitate the fixing of the first cleaning plate 27 and the second cleaning plate 28, a positioning rod 33 is provided. A moving groove 30 is provided on the side of the fixing base 25. A guide rod 31 is provided on the end face of the moving groove 30. A limiting spring 32 and a positioning rod 33 are sleeved on the surface of the guide rod 31. One end of the positioning rod 33 is inserted into the positioning slot 24. A moving hole 34 is provided on the end face of the positioning rod 33. The positioning rod 33 is slidably connected to the guide rod 31 through the moving hole 34. One end of the limiting spring 32 is fixedly connected to the end face of the positioning rod 33, and the other end of the limiting spring 32 is fixedly connected to the end face of the moving groove 30. When it is necessary to fix the first cleaning plate 27 and the second cleaning plate 28 during use, first pull the positioning rod 33 to compress the limiting spring 32, and then insert the first cleaning plate 27 and the second cleaning plate 28 into the cooling cavity 4. This will release the positioning rod 33, allowing it to reset using the elastic force of the limiting spring 32. One end of the positioning rod 33 will then be inserted into the positioning slot 24, thus fixing the first cleaning plate 27 and the second cleaning plate 28. The guide rod 31 is designed to prevent the positioning rod 33 from shifting and to guide the displacement of the guide rod 31.

[0023] To facilitate sealing of the outlet 23, a sealing plate 11 is provided. The base plate 10 is fixedly connected to the lifting end of the electric push rod 6. The base plate 10 has a square plate structure. The sealing plate 11 is fixedly connected to the surface of the base plate 10. The sealing plate 11 has a square plate structure and is inserted into the outlet 23. A metal gasket 36 is provided on the side of the sealing plate 11. The metal gasket 36 is elastic. One end of the metal gasket 36 is fixedly connected to the side of the sealing plate 11. A placement groove 37 is opened on the side of the sealing plate 11. A positioning spring 38 is provided on the end face of the placement groove 37. One end of the positioning spring 38 is fixedly connected to the end face of the placement groove 37, and the other end of the positioning spring 38 is fixedly connected to the inner side of the metal gasket 36. The metal gasket 36 has a square plate structure and multiple sets of metal gaskets 36 are arranged around the sealing plate 11. When it is necessary to seal the outlet 23, the electric push rod 6 can be activated to move the sealing plate 11 upward in conjunction with the base plate 10, so that the sealing plate 11 can be inserted into the outlet 23. After the sealing plate 11 is inserted into the outlet 23, it can squeeze the metal gasket 36, thereby increasing the sealing effect of the sealing plate 11 on the outlet 23. The elasticity of the positioning spring 38 prevents the metal gasket 36 from sticking tightly to the side of the sealing plate 11 after being squeezed for a long time. When the sealing plate 11 is pulled out from the outlet 23, the elasticity of the positioning spring 38 can be used to make the metal gasket 36 spring up, so that the metal gasket 36 is always in close contact with the side of the outlet 23.

[0024] In actual use, the energy storage battery 3 can be placed inside the energy storage cabinet 1 for protection. When the surface temperature of the energy storage cabinet 1 is too high, the main controller 13, in conjunction with the circulating water pump 5, can first pump coolant into the cooling chamber 4 opened on the side of the energy storage cabinet 1. On the one hand, the cooling chamber 4 opened on the side of the energy storage cabinet 1 can reduce heat transfer; on the other hand, injecting coolant into the cooling chamber 4 can further reduce the surface temperature of the energy storage cabinet 1, thereby improving the protection of the energy storage battery 3 and preventing the internal temperature of the energy storage cabinet 1 from becoming too high. When it is necessary to cool the side of the cooling chamber 4... When cleaning the wall, the first cleaning plate 27 and the second cleaning plate 28 can be moved by pulling the fixed seat 25 and using the two sets of traction plates 26. The fixed seat 25, together with the two sets of traction plates 26, can easily support the first cleaning plate 27 and the second cleaning plate 28, so that the rubber pads 29 set on the sides of the first cleaning plate 27 and the second cleaning plate 28 can contact the side wall of the cooling cavity 4. Thus, when the first cleaning plate 27 and the second cleaning plate 28 are pulled out, the dirt attached to the side wall of the cooling cavity 4 can be scraped off using the rubber pads 29.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An outdoor photovoltaic energy storage device, comprising: An energy storage cabinet (1) is provided with a support base (2) on the inner side of the energy storage cabinet (1) and an energy storage battery (3) is provided on the surface of the support base (2). The energy storage cabinet (1) is characterized by having a cooling cavity (4) on the side, a circulating water pump (5) at the bottom of the support base (2), and a support plate (7) on the outer side of the energy storage cabinet (1). A liquid storage tank (8) has a positioning groove (9) on its surface; Electric push rod (6), the lifting end of the electric push rod (6) is provided with a base plate (10), and the surface of the base plate (10) is provided with a sealing plate (11). A protective door (12) is provided inside the protective door (12), and the main controller (13) is electrically connected to the circulating water pump (5) and the electric push rod (6). A sealing baffle (14) is provided with a temperature sensor (15) and a water level sensor (16) on its inner side.

2. The outdoor photovoltaic energy storage device according to claim 1, characterized in that: The energy storage cabinet (1) is provided with a mounting bracket (17) on its surface. A photovoltaic panel (18) is provided on the surface of the mounting bracket (17). The photovoltaic panel (18) is electrically connected to the main controller (13), the electric push rod (6), and the circulating water pump (5). A support plate (7) is fixedly connected to the outer side of the energy storage cabinet (1). A storage tank (39) is provided on the side of the energy storage cabinet (1). A sealing plate (41) is connected to the side of the storage tank (39) by a hinge (40). An auxiliary photovoltaic panel (42) is placed in the storage tank (39). A drain outlet (43) is provided on the surface of the storage tank (39).

3. The outdoor photovoltaic energy storage device according to claim 1, characterized in that: The electric push rod (6) is fixedly connected to the bottom of the support base (2). The energy storage battery (3) is installed on the surface of the support base 92. The bottom of the support base (2) is provided with a protective frame (19). The protective frame (19) is an "L" shaped plate structure. The input end of the circulating water pump (5) is fitted with a water pipe (20). One end of the water pipe (20) is inserted into the liquid storage tank (8). The output end of the circulating water pump (5) is provided with a water delivery pipe (21). One end of the water delivery pipe (21) is inserted into the cooling chamber (4). The cooling chamber (4) is provided with a positioning frame (22). The water delivery pipe (21) is fixedly connected to the positioning frame (22).

4. An outdoor photovoltaic energy storage device according to claim 1, characterized in that: The protective door (12) seals and covers the side of the cooling chamber (4). The temperature sensor (15) and the water level sensor (16) are electrically connected to the main controller (13). The bottom of the cooling chamber (4) has a water outlet (23). The side of the cooling chamber (4) has a positioning slot (24). The cooling chamber (4) has a fixing seat (25). The temperature sensor (15) and the water level sensor (16) are fixedly connected to the side of the protective door (12).

5. An outdoor photovoltaic energy storage device according to claim 4, characterized in that: The fixed base (25) has a movable groove (30) on its side. A guide rod (31) is provided on the end face of the movable groove (30). A limiting spring (32) and a positioning rod (33) are sleeved on the surface of the guide rod (31). One end of the positioning rod (33) is inserted into the positioning slot (24). A movable hole (34) is provided on the end face of the positioning rod (33). The positioning rod (33) is slidably connected to the guide rod (31) through the movable hole (34). One end of the limiting spring (32) is fixedly connected to the end face of the positioning rod (33), and the other end of the limiting spring (32) is fixedly connected to the end face of the movable groove (30).

6. An outdoor photovoltaic energy storage device according to claim 1, characterized in that: The bottom of the support plate (7) is provided with a positioning block (35). The positioning block (35) has a square plate structure. The positioning block (35) is inserted into the positioning groove (9). The liquid storage tank (8) is buried in the ground. The lifting end of the electric push rod (6) is inserted into the liquid storage tank (8).

7. An outdoor photovoltaic energy storage device according to claim 4, characterized in that: The inner side of the fixed seat (25) is provided with a traction plate (26). The traction plate (26) is in the shape of an "L" plate. There are two sets of traction plates (26). The two sets of traction plates (26) are symmetrically distributed about the center line of the long side of the fixed seat (25). The two sets of traction plates (26) are respectively provided with a first cleaning plate (27) and a second cleaning plate (28). The sides of the first cleaning plate (27) and the second cleaning plate (28) are provided with rubber pads (29). The rubber pads (29) are in contact with the side of the cooling cavity (4).

8. An outdoor photovoltaic energy storage device according to claim 1, characterized in that: The base plate (10) is fixedly connected to the lifting end of the electric push rod (6). The base plate (10) has a square plate structure. The sealing plate (11) is fixedly connected to the surface of the base plate (10). The sealing plate (11) has a square plate structure and is inserted into the water outlet (23).

9. An outdoor photovoltaic energy storage device according to claim 1, characterized in that: The sealing plate (11) is provided with a metal gasket (36) on its side. The metal gasket (36) is elastic. One end of the metal gasket (36) is fixedly connected to the side of the sealing plate (11). The sealing plate (11) is provided with a placement groove (37) on its side. A positioning spring (38) is provided on the end face of the placement groove (37). One end of the positioning spring (38) is fixedly connected to the end face of the placement groove (37), and the other end of the positioning spring (38) is fixedly connected to the inner side of the metal gasket (36). The metal gasket (36) has a square plate structure. There are multiple sets of metal gaskets (36), and multiple sets of metal gaskets (36) are arranged around the sealing plate (11).

10. An energy storage system, characterized in that: The outdoor photovoltaic energy storage device described in any one of claims 1-9 above.

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