Outdoor energy storage device for photovoltaic power station

Abstract

The application belongs to the technical field of outdoor energy storage and relates to an outdoor energy storage device for a photovoltaic power station, which comprises an energy storage box, the inside of the energy storage box is provided with a battery pack, two fan blades are symmetrically arranged at the bottom end in the energy storage box, the battery pack is located above the fan blades, a horizontal groove is formed in the bottom end of the energy storage box, two first ventilation plates are symmetrically and horizontally slidably connected in the horizontal groove, the two first ventilation plates correspond to the two fan blades one by one in an up-down mode, vertical grooves are formed in the two side edges of the energy storage box, a second ventilation plate is vertically and slidably connected in each vertical groove, a connecting rod is hingedly connected between the two second ventilation plates and the two first ventilation plates, respectively, and a vertical first rotating shaft is rotatably arranged at the middle of the bottom end of the energy storage box. The single motor simultaneously drives the rotation of the fan blades and the movement of the first ventilation plates and the second ventilation plates, the first ventilation plates and the second ventilation plates are automatically reset when the motor rotates, the energy storage box is blocked, and the protection effect is good.

Description

Technical Field

[0001] This invention belongs to the field of outdoor energy storage technology and relates to an outdoor energy storage device for photovoltaic power plants. Background Technology

[0002] Photovoltaic power generation is a clean energy technology that converts solar radiation into electricity. However, photovoltaic power generation has inherent intermittent and fluctuating characteristics. Its output curve is affected by weather, day-night cycles, and time periods, making it difficult to match with grid load and electricity demand in real time. To address this contradiction, it has become common practice to equip photovoltaic power plants with outdoor energy storage devices. The energy storage tank stores excess electricity when there is sufficient sunshine and releases it at night or on cloudy or rainy days, realizing the spatial and temporal transfer of electricity. This smooths out the output, increases the self-consumption ratio, reduces curtailment losses, and provides emergency backup power during grid failures.

[0003] The battery packs inside energy storage boxes generate a significant amount of heat during frequent charging and discharging, especially in high summer temperatures or under continuous high-power charging and discharging conditions. This rapid increase in internal temperature accelerates battery aging, reduces charging and discharging efficiency, and in severe cases, may lead to thermal runaway and other safety incidents. Therefore, outdoor energy storage boxes must be equipped with reliable cooling systems.

[0004] Chinese Patent 202521582902.0 discloses an adaptive ambient temperature regulation device for an outdoor energy storage integrated machine. A fan is rotatably connected to the lower part of the energy storage box, heat dissipation fins are connected to the left and right sides of the box, and multiple opening and closing plates are rotatably connected to the left and right sides of the box. A motor drives the solar panels to unfold, simultaneously causing the opening and closing plates to rotate and open, achieving ventilation and heat dissipation. However, this solution still has shortcomings: the opening and closing of the plates is achieved solely through the rotation of the solar panels, and when the weather is cold or the device is not in use, the bottom cooling fan is not properly sealed, resulting in insufficient protection.

[0005] To address the aforementioned problems, this invention proposes an outdoor energy storage device for photovoltaic power plants. Summary of the Invention

[0006] To address the problems existing in the background technology, the present invention proposes an outdoor energy storage device for photovoltaic power plants.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: it includes an energy storage box, inside which a battery pack is installed, and two fan blades are symmetrically rotated at the bottom of the energy storage box, with the battery pack located above the fan blades; The bottom of the energy storage box has a horizontal groove, and two first ventilation plates are symmetrically and horizontally slidably connected inside the horizontal groove. The two first ventilation plates correspond one-to-one with the two fan blades. The two sides of the energy storage box have vertical grooves, and each vertical groove has a second ventilation plate vertically and slidably connected inside. The two second ventilation plates are respectively hinged to the two first ventilation plates. The energy storage box has a vertical first rotating shaft rotatably mounted at the bottom center. The first rotating shaft is equipped with a first transmission component and a second transmission component. When the first rotating shaft rotates, the first transmission component drives the two fan blades to rotate, and the second transmission component drives the two first ventilation plates to slide towards each other or away from each other.

[0008] Furthermore, several support rods are fixedly connected at intervals at the bottom of the energy storage box, and the battery pack is set on the top of the support rods.

[0009] Furthermore, the energy storage box has several second ventilation holes spaced from top to bottom at the two second ventilation plates on its side, and each second ventilation hole penetrates the side of the energy storage box. Filter screens are fixedly installed on the two outer sides of the energy storage box at the corresponding second ventilation holes. Each of the second ventilation panels has a number of second connecting holes spaced apart from top to bottom. The number of second connecting holes on the second ventilation panel is equal to the number of second ventilation holes on the side of the corresponding energy storage box and they correspond one-to-one.

[0010] Furthermore, the bottom of the energy storage box is provided with several through first ventilation holes spaced apart at the two first ventilation plates, and each first ventilation hole is connected to the transverse groove. Filter screens are fixedly installed at the two first ventilation hole positions on the bottom surface of the energy storage box. Each of the two first ventilation panels is provided with a number of first connecting holes spaced apart. The number of first connecting holes on the first ventilation panel is equal to the number of first ventilation holes at the corresponding positions and they correspond one-to-one.

[0011] Furthermore, the inner bottom surface of the energy storage box is symmetrically rotatably connected to two vertical third rotating shafts, the top end of the third rotating shafts is rotatably connected to the bottom surface of the support rod, and the two fan blades are respectively fixedly connected to the top ends of the two third rotating shafts.

[0012] Furthermore, a motor is fixedly installed at the bottom of the energy storage box, the bottom end of the first rotating shaft rotates through the bottom surface of the energy storage box and is fixedly connected to the output end of the motor, and the top end of the first rotating shaft extends to the bottom of the support rod.

[0013] Furthermore, the first transmission assembly includes a chain, a first sprocket is fixedly sleeved on the top end of the first shaft, and a second sprocket is fixedly sleeved on each of the two third shafts. The chain drive is sleeved on the first sprocket and the two second sprockets, and the diameter of the first sprocket is larger than the diameter of the second sprocket.

[0014] Furthermore, a connecting plate is fixedly connected to the middle of the bottom surface of each of the two second ventilation plates. The connecting plate is vertically slidably connected in the corresponding vertical groove. One end of the connecting rod is rotatably connected to the bottom end of the connecting plate, and the other end of the connecting rod is rotatably connected to one side of the corresponding first ventilation plate.

[0015] Furthermore, the second transmission component includes a first gear, which is fixedly sleeved on a first rotating shaft. Two vertical second rotating shafts are symmetrically rotatably connected between the two first ventilation plates in the transverse groove. The two second rotating shafts are symmetrical about the first rotating shaft, and the top ends of the two second rotating shafts extend into the energy storage box. The top ends of the two second rotating shafts are fixedly sleeved with second gears, and the two second gears mesh with the first gear. Two limiting discs are fixedly fitted on each of the second rotating shafts from top to bottom. The two first ventilation plates are slidably disposed between the two corresponding limiting discs on the side that is close to each other, and a vertical sliding shaft is fixedly passed through the end of the two first ventilation plates that is close to each other. The two corresponding upper and lower limit plates have a first guide groove, a second guide groove, and an inclined groove on their adjacent sides. The first guide groove, the second guide groove, and the inclined groove on the two corresponding upper and lower limit plates are also vertically corresponding. The first guide groove is annular and coaxial with the second rotating shaft. The second guide groove is semi-circular and close to the outer circular surface of the limiting plate. One end of the inclined groove is connected to the end of the second guide groove, and the other end of the inclined groove is connected to the first guide groove. The two ends of the inclined groove are located on different radii of the limiting plate. The two ends of the sliding shaft are slidably disposed in the corresponding first guide groove, second guide groove, and inclined groove.

[0016] Furthermore, an installation groove is provided at the connection between the inclined groove and the first guide groove. A connecting shaft is rotatably connected inside the installation groove. A limiting plate is fixedly sleeved on the connecting shaft. The limiting plate slides and abuts against the corresponding sliding shaft. One side of the limiting plate abuts against the inner wall of the installation groove. A torsion spring is sleeved on the connecting shaft. One end of the torsion spring is fixedly connected to the limiting plate, and the other end of the torsion spring is fixedly connected to the limiting disc.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The outdoor energy storage device used in this photovoltaic power station achieves mechanical linkage control of the start of the cooling fan and the opening and closing of the ventilation opening by simultaneously driving the fan blades to rotate and the first ventilation plate and the second ventilation plate to move through a single motor. This allows the first ventilation plate and the second ventilation plate to automatically reset when the motor rotates, respectively blocking the first ventilation hole and the second ventilation hole, resulting in good protection.

[0018] 2. The outdoor energy storage device used in this photovoltaic power station uses a first guide groove, a second guide groove, and an inclined groove on a limiting plate. With the sliding of a sliding shaft, when the sliding shaft slides from the second guide groove through the inclined groove into the first guide groove, it drives the first ventilation plate to slide in opposite directions to open the air vent. When the heat dissipation ends and the motor rotates in the reverse direction, the sliding shaft, guided in one direction by the limiting plate, returns from the first guide groove to the second guide groove through the inclined groove, driving the first ventilation plate to slide in opposite directions to reset and close the air vent. The operation is simple. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the structure at the bottom of the energy storage box in this invention; Figure 4 yes Figure 3 Enlarged structural diagram at point A; Figure 5 This is a schematic diagram of the connecting rod in this invention; Figure 6 This is a schematic diagram of the limiting disk in this invention.

[0020] In the diagram: 1. Energy storage box; 2. Motor; 3. First shaft; 4. First gear; 5. Second gear; 6. Second shaft; 7. Limiting plate; 8. First guide groove; 9. Limiting plate; 10. Connecting shaft; 11. Sliding shaft; 12. First ventilation plate; 13. Connecting rod; 14. Inclined groove; 15. Connecting plate; 16. Second ventilation plate; 17. Filter screen; 18. First sprocket; 19. Second sprocket; 20. Chain; 21. Fan blade; 22. Battery pack; 23. Second ventilation hole; 24. First ventilation hole; 25. Second guide groove; 26. Third shaft. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on 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.

[0022] like Figures 1-6 As shown, the technical solution adopted by the present invention is as follows: An outdoor energy storage device for a photovoltaic power station includes an energy storage box 1, and a battery pack 22 is installed inside the energy storage box 1. Two fan blades 21 are symmetrically rotatably arranged at the bottom of the energy storage box 1, and the battery pack 22 is located above the fan blades 21.

[0023] Several support rods are fixedly connected at intervals at the bottom of the energy storage box 1, and the battery pack 22 is set on top of the support rods. The support rods suspend the battery pack 22 inside the energy storage box 1, and a ventilation channel is formed between two adjacent support rods to ensure that the heat dissipation airflow can flow over the surface of the battery pack 22, thereby improving the heat dissipation efficiency.

[0024] The support rod has a gap with the inner bottom surface of the energy storage box 1, and the fan blade 21 is located within the gap, so that the battery pack 22 will not collide with the fan blade 21 when it is placed.

[0025] The inner bottom surface of the energy storage box 1 is symmetrically and rotatably connected to two vertical third shafts 26, and the top of the third shafts 26 is rotatably connected to the bottom surface of the support rod. Two fan blades 21 are respectively fixedly connected to the top of the two third shafts 26. The fan blades 21 are driven to rotate through the third shafts 26, forming two ventilation channels at the bottom of the energy storage box 1 to improve the heat dissipation effect.

[0026] The energy storage box 1 has a horizontal groove at its bottom. Two first ventilation plates 12 are symmetrically and horizontally slidably connected inside the groove. The two first ventilation plates 12 correspond one-to-one with the two fan blades 21. The sides of the first ventilation plates 12 slide against the inner wall of the horizontal groove, so that the first ventilation plates 12 can only slide horizontally.

[0027] At the bottom of the energy storage box 1, several through-holes 24 are spaced apart at the two first ventilation plates 12, and each first ventilation hole 24 is connected to a horizontal groove. The first ventilation holes 24 also correspond to the positions of the fan blades 21, thus forming a heat dissipation channel at the bottom of the energy storage box 1.

[0028] Each of the two first ventilation plates 12 has a number of first connecting holes spaced apart. The number of first connecting holes on the first ventilation plate 12 is equal to the number of first ventilation holes 24 at the corresponding positions and they correspond one-to-one. When the first ventilation plate 12 slides to the position where the first connecting holes are aligned with the first ventilation holes 24, the bottom of the energy storage box 1 is in the air intake open state. When the first ventilation plate 12 slides to the position where the first connecting holes are completely misaligned with the first ventilation holes 24, the solid part of the first ventilation plate 12 completely blocks the first ventilation holes 24, and the bottom of the energy storage box 1 is in the sealed closed state.

[0029] A filter screen 17 is fixedly installed at the two first ventilation holes 24 on the bottom surface of the energy storage box 1. The filter screen 17 covers the outside of the first ventilation holes 24 to prevent impurities from entering the energy storage box 1 and contaminating the battery pack 22 and electrical components.

[0030] The energy storage box 1 has vertical slots on both sides, and a second ventilation plate 16 is vertically slidably connected in each slot. The side of the second ventilation plate 16 slides against the inner wall of the vertical slot, so that the second ventilation plate 16 can only slide vertically up and down.

[0031] The energy storage box 1 has several second ventilation holes 23 spaced from top to bottom at two second ventilation plates 16 on its side. Each second ventilation hole 23 penetrates the side of the energy storage box 1. Air outlets are formed at the second ventilation holes 23 to allow the gas inside the energy storage box 1 to be discharged, thereby accelerating the gas circulation inside the energy storage box 1.

[0032] Each second ventilation plate 16 has a number of second connecting holes spaced apart from top to bottom. The number of second connecting holes on the second ventilation plate 16 is equal to the number of second ventilation holes 23 on the side of the corresponding energy storage box 1, and they correspond one-to-one. When the second ventilation plate 16 slides to the position where the second connecting holes are aligned with the second ventilation holes 23, the side of the energy storage box 1 is in the air-ventilation open state; when the second ventilation plate 16 slides to the position where the second connecting holes are completely misaligned with the second ventilation holes 23, the solid part of the second ventilation plate 16 completely blocks the second ventilation holes 23, and the side of the energy storage box 1 is in the sealed closed state.

[0033] A filter screen 17 is fixedly installed on the two outer sides of the energy storage box 1 at the corresponding second ventilation hole 23 to prevent external impurities from entering the energy storage box 1.

[0034] Two second ventilation panels 16 are respectively hinged to two first ventilation panels 12 by connecting rods 13.

[0035] A connecting plate 15 is fixedly connected to the middle of the bottom surface of each of the two second ventilation plates 16, and the connecting plate 15 is vertically slidably connected in the corresponding vertical groove. One end of the connecting rod 13 is rotatably connected to the bottom end of the connecting plate 15, and the other end of the connecting rod 13 is rotatably connected to one side of the corresponding first ventilation plate 12. Through the transmission of the connecting rod 13, when the first ventilation plate 12 slides horizontally in the horizontal groove, it can drive the second ventilation plate 16 to slide synchronously in the vertical groove.

[0036] Since the first ventilation plate 12 and the second ventilation plate 16 move synchronously, when the first ventilation plate 12 seals the first ventilation hole 24, the second ventilation plate 16 also seals the second ventilation hole 23. Conversely, when the first connecting hole on the first ventilation plate 12 corresponds to the first ventilation hole 24, the second connecting hole on the second ventilation plate 16 also corresponds to the second ventilation hole 23.

[0037] A vertical first rotating shaft 3 is rotatably installed at the center of the bottom of the energy storage box 1.

[0038] A motor 2 is fixedly installed at the bottom of the energy storage box 1. The bottom end of the first rotating shaft 3 rotates through the bottom surface of the energy storage box 1 and is fixedly connected to the output end of the motor 2. The top end of the first rotating shaft 3 extends to the bottom of the support rod and is located inside the energy storage box 1. The motor 2 drives the first rotating shaft 3 to rotate.

[0039] The first rotating shaft 3 is provided with a first transmission assembly and a second transmission assembly. When the first rotating shaft 3 rotates, the first transmission assembly drives the two fan blades 21 to rotate, and the second transmission assembly drives the two first ventilation plates 12 to slide towards each other or away from each other.

[0040] The first transmission assembly includes a chain 20. A first sprocket 18 is fixedly sleeved on the top of the first rotating shaft 3. Two second sprockets 19 are fixedly sleeved on each of the two third rotating shafts 26. The chain 20 is driven by the first sprocket 18 and the two second sprockets 19. When the first sprocket 18 is rotated by the chain 20, the two second sprockets 19 are simultaneously driven to rotate, ensuring that the two fan blades 21 rotate synchronously.

[0041] Furthermore, the diameter of the first sprocket 18 is larger than the diameter of the second sprocket 19, which increases the contact range between the chain 20 and the first sprocket 18, making the transmission smoother.

[0042] The second transmission assembly includes a first gear 4, which is fixedly mounted on a first rotating shaft 3. Two vertical second rotating shafts 6 are symmetrically connected within the transverse groove between the two first ventilation plates 12, and are symmetrical about the first rotating shaft 3. The top ends of both second rotating shafts 6 extend into the energy storage box 1, and each top end of the two second rotating shafts 6 is fixedly mounted with a second gear 5, which meshes with the first gear 4. The first rotating shaft 3 drives the first gear 4 to rotate, and through meshing, causes the two second gears 5 to rotate.

[0043] The diameter of the first gear 4 is smaller than the diameter of the second gear 5, thus forming a reduction gear pair, which reduces the high-speed rotation of the first rotating shaft 3 and transmits it to the second rotating shaft 6.

[0044] Each second rotating shaft 6 is fixedly fitted with two limiting discs 7 at intervals from top to bottom, and each limiting disc 7 is located in a transverse groove. The top surface of the upper limiting disc 7 is in sliding engagement with the top surface of the transverse groove, and the bottom surface of the lower limiting disc 7 is in sliding engagement with the bottom surface of the transverse groove.

[0045] The two first ventilation plates 12 are slidably positioned between the two corresponding limiting discs 7 on their adjacent sides, and a vertical sliding shaft 11 is fixedly inserted through the adjacent ends of the two first ventilation plates 12. A clamping space is formed between the two limiting discs 7 on the same second rotating shaft 6, which repositions the first ventilation plates 12.

[0046] The two corresponding upper and lower limit plates 7 have a first guide groove 8, a second guide groove 25, and an inclined groove 14 on their adjacent sides. The first guide groove 8, the second guide groove 25, and the inclined groove 14 on the two corresponding upper and lower limit plates 7 are also vertically corresponding.

[0047] The first guide groove 8 is annular and coaxial with the second rotating shaft 6. The second guide groove 25 is semi-circular and close to the outer surface of the limiting disk 7, and this arc shape is also coaxial with the second rotating shaft 6. One end of the inclined groove 14 is connected to the end of the second guide groove 25, and the other end of the inclined groove 14 is connected to the first guide groove 8. The two ends of the inclined groove 14 are located on different radii of the limiting disk 7.

[0048] The two ends of the sliding shaft 11 are respectively slidably disposed in the corresponding first guide groove 8, second guide groove 25, and inclined groove 14. When the sliding shaft 11 is in the first guide groove 8 or the second guide groove 25, the horizontal position of the first ventilation plate 12 remains unchanged; the sliding shaft 11 will only move horizontally when it is in the inclined groove 14.

[0049] An installation groove is provided at the connection between the inclined groove 14 and the first guide groove 8. A connecting shaft 10 is rotatably connected inside the installation groove. A limiting plate 9 is fixedly sleeved on the connecting shaft 10. The limiting plate 9 slides and abuts against the corresponding sliding shaft 11. When the sliding shaft 11 is inside the first guide groove 8, the limiting plate 9 will pass through the sliding shaft 11, thereby pushing the limiting plate 9 to rotate.

[0050] The inner wall of the first guide groove 8 is provided with a clearance groove for the limiting plate 9 to avoid, so that the limiting plate 9 does not affect the movement of the sliding shaft 11 within the first guide groove 8.

[0051] A torsion spring is fitted onto the connecting shaft 10. One end of the torsion spring is fixedly connected to the limiting plate 9, and the other end is fixedly connected to the limiting disc 7. One side of the limiting plate 9 abuts against the inner wall of the mounting groove. In the initial state, the torsion spring drives one side of the limiting plate 9 to abut against the inner wall of the mounting groove, at which time the limiting plate 9 can only rotate in one direction.

[0052] Working principle: When it is necessary to dissipate heat from the battery pack 22 inside the energy storage box 1, start the motor 2, and the output end of the motor 2 rotates in the forward direction.

[0053] Motor 2 drives the first rotating shaft 3 to rotate, and the first rotating shaft 3 drives the first sprocket 18 and the first gear 4 to rotate synchronously.

[0054] The first sprocket 18 drives two second sprockets 19 via the chain 20. The second sprockets 19 drive two third shafts 26 to rotate, causing the fan blades 21 to rotate. The fan blades 21 create an upward airflow.

[0055] The first gear 4 drives the two second gears 5 to rotate, causing the two second rotating shafts 6 and the two limiting disks 7 to rotate slowly in the same direction.

[0056] When the limiting disc 7 rotates, the second guide groove 25 first moves at the sliding shaft 11, at which time the first ventilation plate 12 does not move. When the sliding shaft 11 slides to the end of the second guide groove 25, the sliding shaft 11 is also located at the end of the inclined groove 14.

[0057] Due to the inclined arrangement of the sloping groove 14, as the limiting disk 7 continues to rotate, the sloping groove 14 guides the sliding shaft 11 to produce radial displacement. Then, the sloping groove 14 slides outside the sliding shaft 11, pushing the sliding shaft 11 to move. The sliding shaft 11 drives the first ventilation plate 12 to slide horizontally towards the center of the energy storage box 1, bringing the two first ventilation plates 12 closer together.

[0058] When the first ventilation plate 12 slides, it pulls the connecting plate 15 and the second ventilation plate 16 downwards via the connecting rod 13.

[0059] When the sliding shaft 11 is located at the end of the inclined groove 14 that communicates with the first guide groove 8, the sliding shaft 11 moves into the first guide groove 8. At this time, the first connecting hole of the first ventilation plate 12 moves to a position aligned with the first ventilation hole 24, and the second connecting hole of the second ventilation plate 16 moves to a position aligned with the second ventilation hole 23.

[0060] The limiting plate 7 continues to rotate, the first guide groove 8 moves outside the slide shaft 11, the slide shaft 11 stops moving, and the first ventilation plate 12 and the second ventilation plate 16 stop moving.

[0061] At this point, the bottom air inlet (first ventilation hole 24) and the side air outlet (second ventilation hole 23) of the energy storage box 1 are opened simultaneously. Under the blowing action of the fan blades 21, outside air enters the interior of the energy storage box 1 from the bottom first ventilation hole 24 through the first connecting hole, and the filter screen 17 filters the gas.

[0062] The gas flows upward across the surface of the battery pack 22 and is discharged outside the box through the second connecting hole on the side and the second ventilation hole 23. This forms a through-flow convection heat dissipation path from bottom to side, cooling the battery pack 22.

[0063] As the limiting plate 7 rotates, the limiting plate 9 moves to one side of the sliding shaft 11. Then, the limiting plate 9 is blocked by the sliding shaft 11 and rotates, causing the connecting shaft 10 to rotate, and the torsion spring on it to twist.

[0064] After the limiting plate 9 passes the sliding shaft 11, the torsion spring returns to normal, causing the limiting plate 9 to rotate and return to its initial state. This cycle continues, with the sliding shaft 11 sliding within the first guide groove 8, keeping the first ventilation plate 12 and the second ventilation plate 16 in the open position, allowing for continuous heat dissipation.

[0065] When the cooling process is complete and the vents need to be closed, start motor 2 to rotate in the opposite direction. Similarly, this drives the first shaft 3, the first gear 4, the fan blades 21, and the limit plate 7 to rotate.

[0066] When the limiting plate 7 rotates in the reverse direction, the first guide groove 8 continues to move outside the sliding shaft 11. When the sliding shaft 11 is located at the connection between the end of the inclined groove 14 and the first guide groove 8, it cannot rotate in the reverse direction because one side of the limiting plate 9 abuts against the inner wall of the mounting groove. The sliding shaft 11 is blocked by the limiting plate 9 and enters the inclined groove 14.

[0067] Guided by the inclined groove 14, the sliding shaft 11 moves horizontally, causing the first ventilation plate 12 to slide away from the center of the energy storage box 1, so that the two first ventilation plates 12 slide in opposite directions. The first ventilation plate 12 pushes the connecting plate 15 and the second ventilation plate 16 upward to reset via the connecting rod 13.

[0068] When the sliding shaft 11 is located at the end of the inclined groove 14 and also at the end of the second guide groove 25, the sliding shaft 11 no longer moves horizontally. At this time, the solid part of the first ventilation plate 12 re-seals the first ventilation hole 24, and the solid part of the second ventilation plate 16 re-seals the second ventilation hole 23.

[0069] Turn off motor 2, so that the first ventilation plate 12 and the second ventilation plate 16 are both reset to the closed state, and the air inlet at the bottom and the air outlet on the side of the energy storage box 1 are sealed and blocked.

[0070] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An outdoor energy storage device for photovoltaic power plants, characterized in that: It includes an energy storage box (1), inside which a battery pack (22) is installed. Two fan blades (21) are symmetrically rotated at the bottom of the energy storage box (1), and the battery pack (22) is located above the fan blades (21). The energy storage box (1) has a horizontal groove at the bottom. Two first ventilation plates (12) are symmetrically and horizontally connected inside the horizontal groove. The two first ventilation plates (12) correspond one-to-one with the two fan blades (21). The energy storage box (1) has vertical grooves on both sides. Each vertical groove has a second ventilation plate (16) vertically and slidably connected inside. The two second ventilation plates (16) are respectively connected to the two first ventilation plates (12) by connecting rods (13). The energy storage box (1) has a vertical first rotating shaft (3) rotatably mounted at the middle of its bottom end. The first rotating shaft (3) is equipped with a first transmission component and a second transmission component. When the first rotating shaft (3) rotates, the first transmission component drives the two fan blades (21) to rotate, and the second transmission component drives the two first ventilation plates (12) to slide towards each other or away from each other.

2. The outdoor energy storage device for a photovoltaic power station according to claim 1, characterized in that: The bottom of the energy storage box (1) is fixedly connected with several support rods at intervals, and the battery pack (22) is set on the top of the support rods.

3. An outdoor energy storage device for a photovoltaic power station according to claim 1, characterized in that: The energy storage box (1) has several second ventilation holes (23) spaced from top to bottom at two second ventilation plates (16) on its side. Each second ventilation hole (23) penetrates the side of the energy storage box (1). A filter screen (17) is fixedly installed on the two outer sides of the energy storage box (1) at the corresponding second ventilation hole (23). Each of the second ventilation plates (16) has a number of second connecting holes spaced apart from top to bottom. The number of second connecting holes on the second ventilation plate (16) is equal to the number of second ventilation holes (23) on the side of the corresponding energy storage box (1) and they correspond one-to-one.

4. An outdoor energy storage device for a photovoltaic power station according to claim 1, characterized in that: The bottom of the energy storage box (1) is provided with several through first ventilation holes (24) at intervals between the two first ventilation plates (12). Each first ventilation hole (24) is connected to the transverse groove. A filter screen (17) is fixedly installed at the two first ventilation holes (24) on the bottom surface of the energy storage box (1). Each of the two first ventilation plates (12) is provided with a number of first connecting holes spaced apart. The number of first connecting holes on the first ventilation plate (12) is equal to the number of first ventilation holes (24) at the corresponding positions and they correspond one-to-one.

5. An outdoor energy storage device for a photovoltaic power station according to claim 2, characterized in that: The inner bottom surface of the energy storage box (1) is symmetrically connected to two vertical third rotating shafts (26). The top of the third rotating shafts (26) is rotatably connected to the bottom surface of the support rod. The two fan blades (21) are respectively fixedly connected to the top of the two third rotating shafts (26).

6. An outdoor energy storage device for a photovoltaic power station according to claim 5, characterized in that: The energy storage box (1) is fixedly installed with a motor (2). The bottom end of the first rotating shaft (3) rotates through the bottom surface of the energy storage box (1) and is fixedly connected to the output end of the motor (2). The top end of the first rotating shaft (3) extends to the bottom of the support rod.

7. An outdoor energy storage device for a photovoltaic power station according to claim 6, characterized in that: The first transmission assembly includes a chain (20), a first sprocket (18) is fixedly sleeved on the top of the first shaft (3), and a second sprocket (19) is fixedly sleeved on each of the two third shafts (26). The chain (20) is driven by the first sprocket (18) and the two second sprockets (19), and the diameter of the first sprocket (18) is larger than the diameter of the second sprocket (19).

8. An outdoor energy storage device for a photovoltaic power station according to claim 1, characterized in that: A connecting plate (15) is fixedly connected to the middle of the bottom surface of each of the two second ventilation plates (16). The connecting plate (15) is vertically slidably connected in the corresponding vertical groove. One end of the connecting rod (13) is rotatably connected to the bottom end of the connecting plate (15), and the other end of the connecting rod (13) is rotatably connected to one side of the corresponding first ventilation plate (12).

9. An outdoor energy storage device for a photovoltaic power station according to claim 1, characterized in that: The second transmission assembly includes a first gear (4), which is fixedly sleeved on the first rotating shaft (3). Two vertical second rotating shafts (6) are symmetrically rotatably connected between the two first ventilation plates (12) in the transverse groove. The two second rotating shafts (6) are symmetrical about the first rotating shaft (3), and the top ends of the two second rotating shafts (6) extend into the energy storage box (1). The top ends of the two second rotating shafts (6) are fixedly sleeved with second gears (5), and the two second gears (5) mesh with the first gear (4). Each of the second rotating shafts (6) is fixedly fitted with two limiting discs (7) from top to bottom. The two first ventilation plates (12) are slidably disposed between the corresponding two limiting discs (7) on the side that is close to each other, and a vertical sliding shaft (11) is fixedly passed through the end that is close to each other of the two first ventilation plates (12). The two corresponding upper and lower limit plates (7) have a first guide groove (8), a second guide groove (25), and an inclined groove (14) on their adjacent sides. The first guide groove (8), the second guide groove (25), and the inclined groove (14) on the two corresponding upper and lower limit plates (7) are also vertically corresponding. The first guide groove (8) is annular and coaxial with the second rotating shaft (6). The second guide groove (25) is semi-circular and close to the outer circular surface of the limiting disk (7). One end of the inclined groove (14) is connected to the end of the second guide groove (25), and the other end of the inclined groove (14) is connected to the first guide groove (8). The two ends of the inclined groove (14) are located on different radii of the limiting disk (7). The two ends of the sliding shaft (11) are slidably disposed in the corresponding first guide groove (8), second guide groove (25), and inclined groove (14).

10. An outdoor energy storage device for a photovoltaic power station according to claim 9, characterized in that: An installation groove is provided at the connection between the inclined groove (14) and the first guide groove (8). A connecting shaft (10) is rotatably connected inside the installation groove. A limiting plate (9) is fixedly sleeved on the connecting shaft (10). The limiting plate (9) slides and abuts against the corresponding sliding shaft (11). One side of the limiting plate (9) abuts against the inner wall of the installation groove. A torsion spring is fitted on the connecting shaft (10). One end of the torsion spring is fixedly connected to the limiting plate (9), and the other end of the torsion spring is fixedly connected to the limiting disc (7).

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