Photovoltaic energy storage cabinet and energy storage method for solar photovoltaic system

Abstract

The invention relates to the technical field of energy storage cabinets, and discloses a photovoltaic energy storage cabinet and an energy storage method for a solar photovoltaic system.The photovoltaic energy storage cabinet comprises a box body, an energy storage bin is arranged in the box body, a plurality of battery assembly frames are arranged in the energy storage bin, and automatic fire extinguishers are arranged on the battery assembly frames; a residual cavity is formed between the battery assembling frame and the inner walls of the two sides of the energy storage bin, and a guide rail is arranged on the inner bottom wall of the energy storage bin. By arranging the residual cavity, the movable battery assembly frames, the driving assembly and the isolation assembly, when a fire occurs, the driving assembly firstly pushes the battery assembly frames on the two sides of the fire source to be away from the fire source, then the fireproof cloth is unfolded and isolated on the two sides of the fire source, the fire can be effectively prevented from spreading towards the two sides, and then loss is reduced; and finally, the fire source is extinguished through the automatic fire extinguisher, the battery assembly frame is located in a small space after being isolated by the fireproof cloth, the dissipation range of the fire extinguishing agent is smaller, and the fire extinguishing efficiency is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage cabinets, and in particular to a photovoltaic energy storage cabinet and an energy storage method for a solar photovoltaic system. Background Art

[0002] A photovoltaic energy storage cabinet is a device that integrates a photovoltaic power generation system and an energy storage battery system in a standardized cabinet. It is mainly used to store the electricity generated by photovoltaic power generation and release it when needed, providing energy buffering and flexible scheduling capabilities for the photovoltaic system. The photovoltaic energy storage cabinet mainly includes a battery compartment for storing batteries, an electrical equipment compartment for storing switch cabinets and transformer cabinets, a temperature control system, a fire protection system, etc.

[0003] Existing photovoltaic energy storage cabinets have certain shortcomings when in use: first, in order to save space, the internal space of the battery compartment is large, and the batteries are installed relatively densely. Although there is a fire protection system, the fire extinguishing efficiency is poor, and the batteries are easily affected by high temperatures, leading to larger fires. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides a photovoltaic energy storage cabinet and an energy storage method for a solar photovoltaic system, which has the advantages of low safety risks and easy maintenance, and solves the problem of poor efficiency of the fire protection system inside the existing photovoltaic energy storage cabinet.

[0005] To solve the above technical problems, the present invention provides the following technical solutions: a photovoltaic energy storage cabinet, comprising a box body, an energy storage compartment provided inside the box body, a plurality of battery assembly racks provided inside the energy storage compartment, an automatic fire extinguisher provided on the battery assembly racks, a residual cavity provided between the battery assembly racks and the inner walls on both sides of the energy storage compartment, a guide rail provided on the bottom wall of the energy storage compartment, a roller extending into the guide rail provided at the bottom of the battery assembly racks, and an isolation component and a drive component further provided inside the energy storage compartment; The isolation assembly is located on one side of the battery assembly rack, and the isolation assembly includes two rolls of fireproof cloth; The drive assembly is mounted on the top wall of the energy storage bin and is used to separate the battery assembly rack adjacent to the battery on fire. The drive assembly is also used to unfold two rolls of fireproof cloth to separate the battery on fire. The driving assembly is also used to move the isolation assembly, forcing the isolation assembly to move to the battery assembly rack where the fire occurs; When a fire occurs, the drive component operates, forcing the burning battery assembly rack to separate from the adjacent battery assembly rack, and forcing two rolls of fireproof cloth to unfold and isolate the two sides of the burning battery assembly rack. When the battery assembly rack is isolated, the automatic fire extinguisher operates to extinguish the fire in a small area.

[0006] Preferably, notches are provided on both side edges of the top of the battery assembly rack, and the driving assembly includes two longitudinal slides fixed on the top wall of the energy storage bin, longitudinal slides are provided on the two longitudinal slides, a transverse slide is fixedly connected between the two longitudinal slides, a transverse slide is provided on the transverse slide, a strip plate is provided under the transverse slide, a vertical rod is fixed between the strip plate and the transverse slide, two main electric push rods facing vertically downward are installed on the surface of the strip plate, an insertion shaft is fixed on the output end of the main electric push rod, and a pusher for driving the two main electric push rods to move in opposite directions is provided on the surface of the strip plate.

[0007] Preferably, the surface of the strip plate is provided with a horizontal strip hole, the pusher includes a motor fixed at the bottom of the horizontal slide, the motor output shaft is fixed with a disc, the surface of the disc is provided with two connecting rods distributed in a circular array, one end of the connecting rod is rotatably connected to the surface of the disc, and the other end of the connecting rod is hinged with a slider, the slider is slidably connected to the horizontal strip hole, and the main electric push rod passes through the slider and is fixedly connected to the slider.

[0008] Preferably, the isolation assembly further comprises a vertical plate located on one side of the battery assembly rack, the top end of the vertical plate is fixedly connected to the transverse slide, and two rolls of fireproof cloth are symmetrically mounted on the surface of the vertical plate.

[0009] Preferably, two symmetrically distributed shells are installed on the vertical plate, vertical strip-shaped holes are opened on the surface of the shell, and a rotating shaft is rotatably connected inside the shell. The fireproof cloth is wrapped around the rotating shaft, and one end of the inner side of the fireproof cloth is fixed to the rotating shaft. The outer end of the fireproof cloth extends to the outside of the shell through the vertical strip-shaped holes. A vertical pipe is fixed to one end of the fireproof cloth outside the shell, and the inner diameter of the vertical pipe is larger than the diameter of the plug shaft.

[0010] Preferably, the top end of the rotating shaft extends to the outside of the housing, and a volute spring is sleeved on the top end of the rotating shaft. The inner and outer ends of the volute spring are fixedly connected to the rotating shaft and the top wall of the housing respectively.

[0011] Preferably, a storage chamber and a spray assembly are provided on the vertical pipe, the storage chamber is used to store the antioxidant, and the spray assembly is used to spray the antioxidant onto the battery assembly rack.

[0012] Preferably, an upper partition and a lower partition are fixed to the inner cavity of the vertical pipe, the storage cavity is located between the upper partition and the lower partition, and a first one-way valve is provided on the lower partition.

[0013] Preferably, the spray assembly includes an auxiliary electric push rod and a spray pipe, the auxiliary electric push rod is fixed at the bottom end of the vertical pipe and inserted into the vertical pipe, a piston is fixed at the output end of the auxiliary electric push rod, the spray pipe is fixed to the outer wall of the vertical pipe and a plurality of nozzles are provided on the surface, the end of the spray pipe passes through the side wall of the vertical pipe and is connected to the bottom of the storage chamber, and a second one-way valve is installed at the connection between the spray pipe and the side wall of the vertical pipe.

[0014] The present invention also discloses an energy storage method for a solar photovoltaic system. The energy storage method for a solar photovoltaic system uses the above-mentioned photovoltaic energy storage cabinet.

[0015] Compared with the prior art, the present invention provides a photovoltaic energy storage cabinet and an energy storage method for a solar photovoltaic system, which has the following beneficial effects: 1. This photovoltaic energy storage cabinet and energy storage method for a solar photovoltaic system are equipped with a residual cavity, a movable battery assembly rack, a drive component, and an isolation component. When a fire occurs, the drive component first pushes the battery assembly racks on both sides of the fire source away from the fire source, and then deploys the fireproof cloth to isolate the battery assembly racks on both sides of the fire source, effectively preventing the fire from spreading to both sides and thus reducing losses. Finally, the fire source is extinguished by an automatic fire extinguisher. Since the battery assembly racks are in a smaller space after being isolated by the fireproof cloth, the escape range of the fire extinguishing agent is smaller, and the fire extinguishing efficiency is higher.

[0016] 2. This photovoltaic energy storage cabinet and energy storage method for solar photovoltaic systems have improved fire response capabilities and fire handling efficiency compared to existing technologies. Furthermore, the equipment has low space requirements and can still ensure the compactness of the battery, thereby ensuring the storage capacity of the energy storage cabinet.

[0017] 3. This photovoltaic energy storage cabinet and energy storage method for a solar photovoltaic system, by providing a storage chamber and a spray assembly on the vertical pipe, cooperates with the drive assembly to spray an antioxidant onto the terminal blocks on the battery assembly rack, thereby improving the antioxidant performance of the terminal blocks, facilitating the replacement of manual maintenance work in a compact space, and being more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the box body of the present invention; Figure 2 is a cross-sectional view of the box body of the present invention; Figure 3 is a schematic diagram of the operation of the drive assembly of the present invention; Figure 4 It is a structural schematic diagram of the strip plate of the present invention; Figure 5 For the present invention Figure 4 A magnified view of part A; Figure 6It is a structural exploded view of the housing of the present invention; Figure 7 For the present invention Figure 6 A magnified view of part B; Figure 8 This is a schematic diagram of the working of the fireproof cloth of the present invention; Figure 9 is a cross-sectional view of a standpipe of the present invention; Figure 10 For the present invention Figure 9 Enlarged view of part C.

[0019] In the figure: 1, box; 2, energy storage compartment; 3, battery assembly rack; 31, notch; 4, automatic fire extinguisher; 5, residual cavity; 6, guide rail; 7, roller; 8, isolation assembly; 81, fireproof cloth; 82, vertical plate; 83, shell; 84, vertical strip hole; 85, rotating shaft; 86, vertical tube; 87, scroll spring; 9, drive assembly; 91, longitudinal slide; 92, longitudinal slide; 93, horizontal slide; 94, horizontal slide; 95, strip shaped plate; 951, horizontal strip-shaped hole; 96, vertical rod; 97, main electric push rod; 98, plug shaft; 99, pusher; 991, motor; 992, disc; 993, connecting rod; 994, slider; 10, storage chamber; 11, spray assembly; 111, auxiliary electric push rod; 112, spray pipe; 113, piston; 114, nozzle; 115, second one-way valve; 12, upper partition; 13, lower partition; 14, first one-way valve. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] As introduced in the background technology, there are deficiencies in the existing technology. In order to solve the above technical problems, this application proposes a photovoltaic energy storage cabinet and an energy storage method for a solar photovoltaic system.

[0022] Example 1: Please refer to Figures 1-8 A photovoltaic energy storage cabinet includes a box body 1, an energy storage bin 2 is provided inside the box body 1, a plurality of battery assembly racks 3 are provided inside the energy storage bin 2, an automatic fire extinguisher 4 is provided on the battery assembly rack 3, a residual cavity 5 is provided between the battery assembly rack 3 and the inner walls on both sides of the energy storage bin 2, a guide rail 6 is provided on the bottom wall of the energy storage bin 2, a roller 7 extending into the guide rail 6 is provided at the bottom of the battery assembly rack 3, and an isolation component 8 and a drive component 9 are also provided inside the energy storage bin 2; The isolation assembly 8 is located on one side of the battery assembly rack 3 and includes two rolls of fireproof cloth 81; The drive assembly 9 is mounted on the top wall of the energy storage bin 2 and is used to separate the battery assembly rack 3 adjacent to the battery on fire. The drive assembly 9 is also used to unfold two rolls of fireproof cloth 81 to separate the battery on fire. The driving assembly 9 is also used to move the isolation assembly 8, forcing the isolation assembly 8 to move to the battery assembly rack 3 where the fire occurs; When a fire occurs, the drive assembly 9 operates, forcing the battery assembly rack 3 on fire to separate from the adjacent battery assembly rack 3, and forcing the two rolls of fireproof cloth 81 to unfold and isolate the two sides of the battery assembly rack 3 on fire. When the battery assembly rack 3 is isolated, the automatic fire extinguisher 4 operates to extinguish the fire in a small area.

[0023] Among them, multiple groups of batteries are fixed on the battery assembly rack 3. In the initial state, the multiple battery assembly racks 3 are tightly fitted together. The width of the residual cavity 5 between the two sides of the energy storage compartment 2 and the battery assembly rack 3 is set between 20 and 60 cm. The automatic fire extinguisher 4 is a conventional technology. The principle is to spray fire extinguishing agent after monitoring high temperature through a temperature sensor. In actual application, the automatic fire extinguisher 4 is fixed in the middle of the battery assembly rack 3, and the fireproof cloth 81 is set to be made of basalt fiber material. During use, when the automatic fire extinguisher 4 on a battery assembly rack 3 detects a fire, the driving component 9 operates, forcing the isolation component 8 to move to one side of the battery assembly rack 3. The driving component 9 then pushes the battery assembly rack 3 adjacent to the battery assembly rack 3 to move it away from the fire point. The driving component 9 then drives the two rolls of fireproof cloth 81 to unfold, so that the fireproof cloth 81 extends to both sides of the battery assembly rack 3 on fire, isolating the fire source in the small space where the single battery assembly rack 3 is located. The automatic fire extinguisher 4 then operates to spray fire extinguishing agent into the space to extinguish the fire. By providing the residual cavity 5, the movable battery assembly rack 3, the driving component 9 and the isolation component 8, when a fire occurs, the driving component 9 first pushes the battery assembly racks 3 on both sides of the fire source away from the fire source, and then unfolds the fireproof cloth 81 and isolates them on both sides of the fire source, which can effectively prevent the fire from spreading to both sides, thereby reducing losses. Finally, the fire source is extinguished by the automatic fire extinguisher 4. Since the battery assembly rack 3 is in a smaller space after being isolated by the fireproof cloth 81, the escape range of the fire extinguishing agent is smaller, the fire extinguishing efficiency is higher, and the space requirement for the equipment is low, while still ensuring the compactness of the battery and thus the storage capacity of the energy storage cabinet.

[0024] Example 2: See Figure 3-Figure 6, different from the above embodiment, the edges of both sides of the top of the battery assembly rack 3 are provided with notches 31, the driving assembly 9 includes two longitudinal slides 91 fixed to the top wall of the energy storage bin 2, the two longitudinal slides 91 are provided with longitudinal slides 92, a transverse slide 93 is fixedly connected between the two longitudinal slides 92, a transverse slide 94 is provided on the transverse slide 93, a strip plate 95 is provided below the transverse slide 94, a vertical rod 96 is fixed between the strip plate 95 and the transverse slide 94, two main electric push rods 97 facing vertically downward are installed on the surface of the strip plate 95, and an insertion shaft 98 is fixed to the output end of the main electric push rod 97 The surface of the strip plate 95 is provided with a pusher 99 for driving the two main electric push rods 97 to move in opposite directions. The surface of the strip plate 95 is provided with a horizontal strip hole 951. The pusher 99 includes a motor 991 fixed to the bottom of the horizontal slide 94. The output shaft of the motor 991 is fixed with a disc 992. The surface of the disc 992 is provided with two connecting rods 993 distributed in a ring array. One end of the connecting rod 993 is rotatably connected to the surface of the disc 992, and the other end of the connecting rod 993 is hinged with a slider 994. The slider 994 is slidably connected to the horizontal strip hole 951. The main electric push rod 97 passes through the slider 994 and is fixedly connected to the slider 994.

[0025] Among them, the longitudinal slide 91 and the transverse slide 93 are both configured as electric slides, and four vertical rods 96 are configured. When in use, the longitudinal slide 91 drives the longitudinal slide 92 to move after operation, and then drives the transverse slide 93, the transverse slide 94, and the strip plate 95 to move, so that the strip plate 95 is just moved to the top of the battery assembly rack 3 where the fire occurs. Then, the main electric push rod 97 drives the plug shaft 98 to move downward, so that the plug shaft 98 is just inserted into the recess 31, and finally the motor 991 is started. The operation of the motor 991 drives the disc 992 to rotate a certain angle. When the disc 992 rotates, it drives one end of the connecting rod 993 to move, and the other end of the connecting rod 993 pushes the slider 994 to slide. When the slider 994 slides, it drives the electric push rod and the plug shaft 98 to move, and then the plug shaft 98 pushes the inner wall of the recess 31, pushing the battery assembly racks 3 adjacent to each other on both sides of the fire source away, so that the battery assembly racks 3 are away from the fire source; By providing the driving assembly 9, when a fire occurs, the battery assembly racks 3 on both sides of the fire source are immediately pushed toward the residual cavity 5 to keep them away from the fire source, thereby reducing the probability of fire spreading and thus minimizing losses.

[0026] Example 3, see Figure 6-Figure 8 , different from the above embodiment, the isolation assembly 8 also includes a vertical plate 82 located on one side of the battery assembly rack 3, the top of the vertical plate 82 is fixedly connected to the horizontal slide 93, and two rolls of fireproof cloth 81 are symmetrically installed on the surface of the vertical plate 82.

[0027] When a fire occurs, the horizontal slide 93 moves to the top of the battery assembly rack 3 where the fire occurs, and the vertical plate 82 moves with the horizontal slide 93 to the side of the battery assembly rack 3, so that the two protective cloths face the gaps on both sides of the battery assembly rack 3, so that the protective cloths can be subsequently driven to unfold; By providing the driving assembly 9, the driving assembly 9 can also move the isolation assembly 8 to the side of the fire source when it is in operation, so as to isolate the fire source later.

[0028] Example 4, see Figure 6-Figure 8 , different from the above embodiment, two symmetrically distributed shells 83 are installed on the vertical plate 82, and vertical strip holes 84 are opened on the surface of the shell 83. A rotating shaft 85 is rotatably connected inside the shell 83. The fireproof cloth 81 is wrapped around the rotating shaft 85, and one inner end of the fireproof cloth 81 is fixed to the rotating shaft 85. The outer end of the fireproof cloth 81 extends to the outside of the shell 83 through the vertical strip holes 84. The fireproof cloth 81 is located at one end outside the shell 83 and is fixed with a vertical pipe 86. The inner diameter of the vertical pipe 86 is larger than the diameter of the plug shaft 98. The top end of the rotating shaft 85 extends to the outside of the shell 83, and a vortex spring 87 is sleeved on the top end of the rotating shaft 85. The inner and outer ends of the vortex spring 87 are respectively fixed to the rotating shaft 85 and the top wall of the shell 83.

[0029] When the volute spring 87 is in a deformed state, the elastic force of the volute spring 87 causes the fireproof cloth 81 to be rolled up on the rotating shaft 85, and the vertical tube 86 is close to the outside of the vertical strip hole 84. When in use, after the driving assembly 9 drives the battery assembly racks 3 on both sides of the fire source away from the fire source, the horizontal slide 93 operates to cause the horizontal slide 94 to move. When the horizontal slide 94 moves, it drives the strip plate 95, the main electric push rod 97 and the plug shaft 98 to move in the direction of the vertical plate 82, and finally causes the plug shaft 98 to move just above the vertical tube 86. At this time, the main electric push rod 97 is controlled to extend, so that the plug shaft 98 is inserted into the vertical tube 86. Then the horizontal slide 93 is started again, so that the horizontal slide 94 moves in the opposite direction, driving the plug shaft 98 to move in the opposite direction. The plug shaft 98 drives the vertical tube 86 to move at this time. When the vertical tube 86 moves, it pulls the rolled fireproof cloth 81, so that the fireproof cloth 81 is unfolded and extends into the gaps on both sides of the fire source. Finally, the two fireproof cloths 81 are unfolded to isolate the fire source in the middle. By providing the driving component 9 and the isolating component 8, when the driving component 9 is in operation, the two sets of rolled-up fireproof cloths 81 can be unfolded and extended to both sides of the fire source, and the heat insulation performance of the fireproof cloths 81 can be used to reduce the damage of the fire source to the battery assembly racks 3 on both sides, further reducing the probability of the fire spreading, and can also wrap the fire source in a smaller space. When the automatic fire extinguisher 4 is in operation, the fire extinguishing efficiency is higher, and the success rate of fire extinguishing is improved.

[0030] Example 5, see Figures 8-10, which is different from the above embodiment, the vertical pipe 86 is provided with a storage chamber 10 and a spray assembly 11. The storage chamber 10 is used to store the antioxidant, and the spray assembly 11 is used to spray the antioxidant onto the battery assembly rack 3. The upper partition 12 and the lower partition 13 are fixed to the inner cavity of the vertical pipe 86. The storage chamber 10 is located between the upper partition 12 and the lower partition 13. The lower partition 13 is provided with a first one-way valve 14. The spray assembly 11 includes a secondary electric push rod. Rod 111 and spray pipe 112, the auxiliary electric push rod 111 is fixed at the bottom end of the vertical pipe 86 and inserted into the vertical pipe 86, the output end of the auxiliary electric push rod 111 is fixed with a piston 113, the spray pipe 112 is fixed on the outer wall of the vertical pipe 86 and is provided with a plurality of nozzles 114 on the surface, the end of the spray pipe 112 passes through the side wall of the vertical pipe 86 and is connected to the bottom of the storage chamber 10, and a second one-way valve 115 is installed at the connection between the spray pipe 112 and the side wall of the vertical pipe 86.

[0031] The height of the nozzle 114 matches the height of the terminal blocks on the battery assembly rack 3. The first one-way valve 14 only allows the medium to enter the bottom of the lower partition 13 from the storage chamber 10. The second one-way valve 115 only allows the medium to enter the spray pipe 112 from the inside of the vertical pipe 86. In actual applications, if it is necessary to perform terminal maintenance on each battery assembly rack 3, manual operation is not suitable in the narrow space. At this time, the driving component 9 is started, and then the vertical pipe 86 is started to move, so that the vertical pipe 86 passes the side of the battery assembly rack 3. When the nozzle 114 on the vertical pipe 86 is facing the terminal blocks on the battery assembly rack 3, the auxiliary electric push rod 111 is started. When the auxiliary electric push rod 111 contracts, it drives the piston 113 to move downward to suck out the antioxidant in the storage chamber 10. When the auxiliary electric push rod 111 extends, it drives the piston 113 to move upward to squeeze the antioxidant into the spray pipe 112, and then sprays it onto the terminal blocks from the nozzle 114. By setting a storage chamber 10 and a spray assembly 11 on the vertical pipe 86 and cooperating with the drive assembly 9, antioxidants can be sprayed onto the terminals on the battery assembly rack 3, thereby improving the antioxidant performance of the terminals, making it convenient to replace manual maintenance work in a compact space and more efficient.

[0032] Example 6. An energy storage method for a solar photovoltaic system. The energy storage method for a solar photovoltaic system uses a photovoltaic energy storage cabinet in the above-mentioned embodiment.

[0033] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic energy storage cabinet, comprising a box body, an energy storage compartment disposed inside the box body, and a plurality of battery assembly racks disposed inside the energy storage compartment, characterized in that: The battery assembly rack is provided with an automatic fire extinguisher, a residual cavity is provided between the battery assembly rack and the inner walls on both sides of the energy storage bin, a guide rail is provided on the bottom wall of the energy storage bin, and a roller extending into the guide rail is provided at the bottom of the battery assembly rack. An isolation component and a drive component are also provided inside the energy storage bin; The isolation assembly is located on one side of the battery assembly rack, and the isolation assembly includes two rolls of fireproof cloth; The drive assembly is mounted on the top wall of the energy storage bin and is used to separate the battery assembly rack adjacent to the battery on fire. The drive assembly is also used to unfold two rolls of fireproof cloth to separate the battery on fire. The driving assembly is also used to move the isolation assembly, forcing the isolation assembly to move to the battery assembly rack where the fire occurs; When a fire occurs, the drive component operates, forcing the burning battery assembly rack to separate from the adjacent battery assembly rack, and forcing two rolls of fireproof cloth to unfold and isolate the two sides of the burning battery assembly rack. When the battery assembly rack is isolated, the automatic fire extinguisher operates to extinguish the fire in a small area.

2. A photovoltaic energy storage cabinet according to claim 1, characterized in that: The top edge of the battery assembly rack is provided with notches on both sides, and the driving assembly includes two longitudinal slides fixed on the top wall of the energy storage bin, the two longitudinal slides are provided with longitudinal slides, a transverse slide is fixedly connected between the two longitudinal slides, a transverse slide is provided on the transverse slide, a strip plate is provided under the transverse slide, a vertical rod is fixed between the strip plate and the transverse slide, two main electric push rods facing vertically downward are installed on the surface of the strip plate, an insertion shaft is fixed on the output end of the main electric push rod, and a pusher for driving the two main electric push rods to move in opposite directions is provided on the surface of the strip plate.

3. A photovoltaic energy storage cabinet according to claim 2, characterized in that: The surface of the strip plate is provided with a horizontal strip hole, and the pusher includes a motor fixed at the bottom of the horizontal slide, and a disc is fixed to the output shaft of the motor. Two connecting rods distributed in a circular array are provided on the surface of the disc, and one end of the connecting rod is rotatably connected to the surface of the disc, and the other end of the connecting rod is hinged with a slider, and the slider is slidably connected to the horizontal strip hole, and the main electric push rod passes through the slider and is fixedly connected to the slider.

4. A photovoltaic energy storage cabinet according to claim 3, characterized in that: The isolation assembly further comprises a vertical plate located on one side of the battery assembly rack, the top end of the vertical plate is fixedly connected to the horizontal slide, and two rolls of fireproof cloth are symmetrically mounted on the surface of the vertical plate.

5. The photovoltaic energy storage cabinet according to claim 4, characterized in that: Two symmetrically distributed shells are installed on the vertical plate, and vertical strip-shaped holes are opened on the surface of the shell. A rotating shaft is rotatably connected inside the shell, and the fireproof cloth is wrapped around the rotating shaft. One end of the inner side of the fireproof cloth is fixed to the rotating shaft, and one end of the outer side of the fireproof cloth extends to the outside of the shell through the vertical strip-shaped holes. A vertical pipe is fixed to one end of the fireproof cloth outside the shell, and the inner diameter of the vertical pipe is larger than the diameter of the plug shaft.

6. The photovoltaic energy storage cabinet according to claim 5, characterized in that: The top end of the rotating shaft extends to the outside of the shell, and a scroll spring is sleeved on the top end of the rotating shaft. The inner and outer ends of the scroll spring are fixedly connected to the rotating shaft and the top wall of the shell respectively.

7. The photovoltaic energy storage cabinet according to claim 6, characterized in that: The vertical pipe is provided with a storage cavity and a spray assembly. The storage cavity is used to store the antioxidant, and the spray assembly is used to spray the antioxidant onto the battery assembly rack.

8. The photovoltaic energy storage cabinet according to claim 7, characterized in that: An upper partition and a lower partition are fixed to the inner cavity of the vertical pipe. The storage cavity is located between the upper partition and the lower partition. A first one-way valve is provided on the lower partition.

9. The photovoltaic energy storage cabinet according to claim 8, characterized in that: The spray assembly includes an auxiliary electric push rod and a spray pipe. The auxiliary electric push rod is fixed at the bottom end of the vertical pipe and inserted into the vertical pipe. A piston is fixed at the output end of the auxiliary electric push rod. The spray pipe is fixed to the outer wall of the vertical pipe and is provided with multiple nozzles on the surface. The end of the spray pipe passes through the side wall of the vertical pipe and is connected to the bottom of the storage chamber. A second one-way valve is installed at the connection between the spray pipe and the side wall of the vertical pipe.

10. An energy storage method for a solar photovoltaic system, characterized in that: The energy storage method for a solar photovoltaic system uses a photovoltaic energy storage cabinet as described in any one of claims 1 to 9.

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