Energy storage power station safety monitoring device and method

Abstract

The present invention belongs to the technical field of energy storage power station safety monitoring, and specifically relates to a device and method for energy storage power station safety monitoring. The device comprises a box body, wherein four battery racks are provided inside the box body, and batteries are installed on the battery racks; rollers are installed at the bottom of the battery racks; slots are provided at the four corners of the box body, and movable wall panels are provided on the slots, and the movable wall panels are engaged with the slots; the movable wall panels correspond to the battery racks one by one, and the movable wall panels and the corresponding battery racks are connected by corresponding transmission structures; the present invention can not only achieve rapid ventilation and heat dissipation with the outside world, thereby improving the ventilation and heat dissipation effect, but also facilitate subsequent maintenance or fire extinguishing operations by opening the slots of the box body; the present invention can not only prevent normal batteries from being affected by thermal runaway batteries, but also provide a certain processing space for batteries that have thermal runaway; the sensor of the present invention can better monitor the battery status on the corresponding battery rack, thereby improving the monitoring effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy storage power station safety monitoring, and in particular relates to an energy storage power station safety monitoring device and method. Background Art

[0002] Energy storage power stations are facilities that convert electrical energy into other forms for storage and then convert it back into electricity when needed to supply the grid or users. Energy storage stations can employ a variety of technologies to achieve energy storage, such as battery energy storage systems, which utilize batteries as the energy storage medium. Battery systems are prone to fires, and the main causes of battery fires include internal short circuits, overcharging and over-discharging, high temperatures, and mechanical damage.

[0003] Chinese patent application number 202410159881.5 discloses a thermal runaway-resistant energy storage cabinet. This thermal runaway-resistant energy storage cabinet can provide excellent water-cooling heat dissipation for each battery module. At the same time, it is convenient to automatically adjust the cooling water flow in the cooling pipe according to the surface temperature of each battery module, making the heat dissipation more efficient and effective. In addition, by pre-monitoring the surface temperature of each battery module, when the surface temperature of a battery module rises abnormally, the temperature-sensitive magnetic power generation component is raised and lowered and aligned with the battery module, which can focus on the temperature of the battery module. When the battery module experiences thermal runaway, the temperature-sensitive magnetic power generation component can detect it in time, and the fire extinguishing component can promptly extinguish the fire, ensuring the detection speed and accuracy of the temperature-sensitive magnetic power generation component, thereby ensuring the safer and more reliable use of the energy storage cabinet body.

[0004] In the prior art, when energy storage cabinets use water to cool batteries, the water-cooling structure results in high costs, complex structure, and the risk of leakage. Furthermore, after a battery thermal runaway occurs, it cannot be promptly and effectively handled, resulting in low handling efficiency. Meanwhile, the thermally runaway battery can also affect other normal batteries, causing greater losses. Summary of the Invention

[0005] In order to solve at least one of the above-mentioned technical problems existing in the prior art, the present invention provides a safety monitoring device and method for an energy storage power station. The present invention can not only achieve rapid ventilation and heat dissipation with the outside world, thereby improving the ventilation and heat dissipation effect, but also facilitate subsequent maintenance or fire extinguishing operations by opening the slots in the box; the present invention can not only protect normal batteries from the impact of thermal runaway batteries, but also provide a certain processing space for batteries experiencing thermal runaway; the sensor of the present invention can better monitor the battery status on the corresponding battery rack, thereby improving the monitoring effect.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A safety monitoring device for an energy storage power station includes a housing, wherein four battery racks are provided inside the housing, and batteries are mounted on the battery racks; rollers are mounted on the bottoms of the battery racks; slots are formed at the four corners of the housing, and movable wall panels are provided on the slots, and the movable wall panels engage with the slots; the movable wall panels correspond to the battery racks one by one, and are connected to the corresponding battery racks via corresponding transmission structures;

[0008] The transmission structure includes a fixed rod and a transmission gear plate, one end of the fixed rod is fixedly connected to the top of the battery rack, and the other end of the fixed rod is fixedly connected to the movable wall panel; a plurality of sliding grooves are provided under the transmission gear plate, and the transmission gear plate is slidably connected to the corresponding sliding grooves; a transmission motor is provided on one side of the transmission gear plate, and a gear is provided at the output end of the transmission motor, and the gear is meshed with the transmission gear plate; one end of the transmission gear plate is fixedly connected to the bottom of the battery rack, and the other end of the transmission gear plate is fixedly connected to the movable wall panel; the transmission motor and the sliding groove are both fixedly connected to the bottom surface of the box body, and four sensors are fixedly provided inside the top surface of the box body, and the sensors are located above the battery rack and correspond one-to-one to the battery rack.

[0009] Furthermore, each of the battery racks is provided with a heat insulation structure on one side, and the heat insulation structure includes two heat insulation plates; the battery rack is provided with a hinge frame at the upper and lower ends close to the center of the box, and two hinge slots are provided at one end of the hinge frame; each of the hinge slots is hinged with a hinge rod, and the end of the hinge rod away from the hinge slot is fixedly connected to the corresponding heat insulation plate; a limited length slot is provided on the hinge rod; the upper and lower hinge rods form a group, and the limited length slots of each group of hinge rods are slidably connected to a limited column, and the limited column is fixedly connected to the bottom surface of the box.

[0010] Furthermore, when the movable wall panel is engaged with the notch of the box body, the heat insulation board is located between the side of the corresponding box body and the battery rack; when the movable wall panel is separated from the notch of the box body, the heat insulation board is located between adjacent battery racks.

[0011] Furthermore, the sides of the box body are each provided with a door body, and the bottom of the bottom surface of the box body is provided with a plurality of supporting legs.

[0012] Furthermore, a heat dissipation structure is provided at the center of the top surface of the box, and the heat dissipation structure includes a ventilation pipe, which is fixedly connected to the center of the top surface of the box and connects the inside of the box with the outside; a fan is fixedly connected to the ventilation pipe located outside the box, and an air outlet is fixedly connected to the ventilation pipe located inside the box, and a plurality of air outlet holes are evenly arranged on the side walls of the air outlet.

[0013] Furthermore, one end of the air outlet close to the bottom surface of the box body is closed, and one end of the air outlet close to the ventilation pipe is connected to the ventilation pipe through a tapered pipe, and the diameter of the tapered pipe increases continuously from top to bottom.

[0014] Furthermore, a first filter is installed in the ventilation pipe.

[0015] Furthermore, a rain shield structure is installed on the top surface of the box body, and the rain shield structure includes a rain shield plate. The rain shield plate is located above the fan, and a plurality of support frames are provided at the bottom of the rain shield plate. The support frames are fixedly connected to the top surface of the box body.

[0016] Furthermore, the movable wall panel includes two movable panels with ends vertically connected, a ventilation hole is opened above the movable panel, and a second filter is installed on the ventilation hole; a fire extinguisher is installed between the two movable panels through a bracket.

[0017] The present invention also claims protection for a monitoring method using the above-mentioned energy storage power station safety monitoring device, comprising the following steps:

[0018] S1. When the sensor is in the normal monitoring state, the movable wall panel fits into the notch of the box. The heat insulation board is located between the side of the corresponding box and the battery rack. The heat dissipation structure is in operation, and the fan draws cold air from the outside of the box into the inside of the box. The air is dissipated to the batteries on the surrounding battery racks through the air outlet. The air is diverted through the heat insulation board, which improves the heat dissipation effect of the corresponding battery rack and enables the sensor to better monitor the batteries on the corresponding battery rack.

[0019] S2. When the batteries on the battery rack are in a thermal runaway state, the sensor detects an abnormality and activates the corresponding transmission motor, driving the transmission tooth plate to slide outward in the sliding groove, so that the movable wall panel is separated from the notch of the box body. The battery rack moves toward the notch of the box body under the drive of the transmission tooth plate, achieving rapid ventilation and heat dissipation with the outside world. At this time, the heat insulation plate is located between adjacent battery racks for thermal insulation treatment to prevent the battery in thermal runaway from affecting the batteries on the adjacent battery racks.

[0020] S3. When the thermal runaway of the batteries on the battery rack worsens and causes combustion, take out the fire extinguisher between the two movable plates to extinguish the fire. At the same time, cooperate with other fire-fighting equipment to extinguish the fire of the batteries on the battery rack at the slots of the box.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) The present invention adopts a transmission structure design. When the sensor detects that the battery below is experiencing thermal runaway, the transmission motor is operated to drive the transmission tooth plate to slide outward along the sliding groove, thereby separating the movable wall panel from the notch of the box body. The battery rack moves toward the notch of the box body under the drive of the transmission tooth plate. This can not only achieve rapid ventilation and heat dissipation with the outside world, thereby improving the ventilation and heat dissipation effect, but also facilitate subsequent maintenance or fire extinguishing operations by opening the notch of the box body.

[0023] (2) The present invention cooperates with the transmission structure and the heat insulation structure. When the sensor detects that the battery below is in thermal runaway, the movable wall panel is separated from the slot of the box body. When the battery rack moves toward the slot of the box body under the transmission of the transmission tooth plate, the articulated frame pulls the two articulated rods to move. The articulated rods rotate along the limit slot under the action of the limit column, thereby causing the heat insulation board to deflect and rotate between adjacent battery racks to isolate normal batteries from thermal runaway batteries. In conjunction with the heat insulation board that has not deflected, an isolation space is formed, which can not only prevent normal batteries from being affected by thermal runaway batteries, but also provide a certain processing space for thermal runaway batteries, facilitating subsequent fire extinguishing treatment while avoiding damage to other normal batteries during the fire extinguishing process.

[0024] (3) The present invention dissipates heat from the batteries inside the box through a heat dissipation structure. When the sensor is in a normal monitoring state, the movable wall panel is engaged with the notch of the box. At this time, the heat insulation plate is located between the side of the corresponding box and the battery rack. The wind is guided by the heat insulation plate, and the wind speed increases while moving upward, which can not only improve the heat dissipation effect of the corresponding battery rack, but also enable the sensor to better monitor the battery status on the corresponding battery rack, thereby improving the monitoring effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of a safety monitoring device for an energy storage power station according to the present invention;

[0026] Figure 2 This is a schematic diagram of the decentralized structure of a safety monitoring device for an energy storage power station according to the present invention;

[0027] Figure 3 This is a schematic diagram of the internal structure of a safety monitoring device for an energy storage power station according to the present invention;

[0028] Figure 4 This is a partial structural diagram of a safety monitoring device for an energy storage power station according to the present invention;

[0029] Figure 5 This is a schematic diagram of the partial structure of a safety monitoring device for an energy storage power station according to the present invention. Figure 1 ;

[0030] Figure 6This is a schematic diagram of the partial structure of a safety monitoring device for an energy storage power station according to the present invention. Figure 2 ;

[0031] Figure 7 This is a schematic diagram of the partial structure of a safety monitoring device for an energy storage power station according to the present invention. Figure 3 ;

[0032] Figure 8 This is a schematic diagram of the internal operating status structure of a safety monitoring device for an energy storage power station according to the present invention. Figure 1 ;

[0033] Figure 9 This is a schematic diagram of the internal operating status structure of a safety monitoring device for an energy storage power station according to the present invention. Figure 2 .

[0034] The reference numerals are as follows:

[0035] Cabinet 100; top 110; side 120; door 130; bottom 140; support leg 150; movable wall panel 200; movable panel 210; vent 220; second filter 230; heat dissipation structure 300; fan 310; ventilation duct 320; exhaust pipe 330; conical tube 340; rain shield 400; rain shield 410; support frame 420; insulation structure 500; insulation board 510; hinged rod 520; limiting slot 530; limiting column 540; battery rack 600; hinged frame 610; hinged slot 611; transmission structure 700; fixing rod 710; transmission gear plate 720; transmission motor 730; sliding slot 740; fire extinguisher 800; sensor 900. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the embodiments. Of course, the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0037] Although the steps in the present invention are arranged with numbers, they are not intended to limit the order of the steps. Unless the order of the steps is clearly stated or the execution of a step requires other steps as a basis, the relative order of the steps can be adjusted. It is understood that the term "and / or" used herein refers to and covers any and all possible combinations of one or more of the associated listed items.

[0038] Example

[0039] like Figures 1 to 9As shown, a safety monitoring device for an energy storage power station includes a housing 100, wherein four battery racks 600 are provided inside the housing 100, and batteries are mounted on the battery racks 600; rollers are mounted on the bottom of the battery racks 600; slots are formed at the four corners of the housing 100, and movable wall panels 200 are provided on the slots, and the movable wall panels 200 are engaged with the slots; the movable wall panels 200 correspond to the battery racks 600 one by one, and the movable wall panels 200 and the corresponding battery racks 600 are connected by corresponding transmission structures 700;

[0040] The transmission structure 700 includes a fixed rod 710 and a transmission gear plate 720. One end of the fixed rod 710 is fixedly connected to the top of the battery rack 600, and the other end of the fixed rod 710 is fixedly connected to the movable wall panel 200. A plurality of sliding slots 740 are provided below the transmission gear plate 720, and the transmission gear plate 720 is slidably connected to the corresponding sliding slots 740. A transmission motor 730 is provided on one side of the transmission gear plate 720. The output end of the transmission motor 730 is provided with a gear, which meshes with the transmission gear plate 720. One end of the transmission gear plate 720 is fixedly connected to the bottom of the battery rack 600, and the other end of the transmission gear plate 720 is fixedly connected to the movable wall panel 200. The transmission motor 730 and the sliding slots 740 are both fixedly connected to the bottom surface 140 of the box body 100. Four sensors 900 are fixedly provided inside the top surface 110 of the box body 100. The sensors 900 are located above the battery rack 600 and correspond one to one with the battery rack 600.

[0041] It is worth noting that the sensor 900 of the present invention can monitor the battery and give an early warning of fire, such as a particle sensor, etc., which is a prior art and will not be described in detail here.

[0042] Through the structural design of the transmission structure 700 of the present invention, when the sensor 900 detects that the battery below has thermal runaway, the transmission motor 730 is operated to drive the gear to drive the transmission tooth plate 720 to slide outward along the sliding groove 740, thereby causing the movable wall panel 200 to detach from the notch of the box body 100. The battery rack 600 moves toward the notch of the box body 100 under the drive of the transmission tooth plate 720, which can not only achieve rapid ventilation and heat dissipation with the outside world and improve the ventilation and heat dissipation effect, but also facilitate subsequent maintenance or fire extinguishing operations by opening the notch of the box body 100.

[0043] It is worth noting that the transmission motor 730 is controlled by an external power supply. The transmission motor 730 is a forward and reverse motor with a reset function. At the same time, the transmission motor 730 can be controlled manually or the transmission motor 730 and the sensor 900 can be linked and controlled through a PLC control system. No further restrictions are made here.

[0044] Furthermore, each of the battery racks 600 is provided with an insulation structure 500 on one side, and the insulation structure 500 includes two insulation boards 510; the battery rack 600 is provided with a hinge frame 610 at the upper and lower ends close to the center of the box body 100, and one end of the hinge frame 610 is provided with two hinge grooves 611; each hinge groove 611 is hinged with a hinge rod 520, and the end of the hinge rod 520 away from the hinge groove 611 is fixedly connected to the corresponding insulation board 510; the hinge rod 520 is provided with a limited long groove 530; the upper and lower hinge rods 520 form a group, and the limiting long groove 530 of each group of hinge rods 520 are slidably connected to the limiting column 540, and the limiting column 540 is fixedly connected to the bottom surface 140 of the box body 100.

[0045] It is worth noting that the heat insulation board 510 can be a lightweight heat insulation board with heat insulation function, and there is no specific limitation on the material.

[0046] Furthermore, when the movable wall panel 200 is engaged with the slot of the box body 100, the heat insulation board 510 is located between the side surface 120 of the corresponding box body 100 and the battery rack 600; when the movable wall panel 200 is separated from the slot of the box body 100, the heat insulation board 510 is located between adjacent battery racks 600.

[0047] The present invention cooperates with the transmission structure 700 and the insulation structure 500. When the sensor 900 detects that the battery below is in thermal runaway, the movable wall panel 200 disengages from the slot of the box 100. When the battery rack 600 moves toward the slot of the box 100 under the transmission of the transmission tooth plate 720, the articulated frame 610 pulls the two articulated rods 520 to move. The articulated rods 520 rotate along the limiting long groove 530 under the action of the limiting column 540, thereby causing the insulation board 510 to deflect and rotate between adjacent battery racks 600 to isolate normal batteries from thermal runaway batteries, and form an isolation space with the non-deflected insulation board 510, which can not only prevent normal batteries from being affected by thermal runaway batteries, but also provide a certain processing space for batteries with thermal runaway, facilitating subsequent fire extinguishing while avoiding damage to other normal batteries during the fire extinguishing process.

[0048] Furthermore, each side 120 of the box 100 is equipped with a door 130, and the bottom 140 of the box 100 is provided with a plurality of support legs 150. The provision of a door 130 on each side 120 of the box 100 facilitates the installation of batteries and other components within the box 100, improves maintenance efficiency, and in the event of a fire, multiple doors 130 can be opened for emergency ventilation or evacuation.

[0049] Furthermore, a heat dissipation structure 300 is provided at the center of the top surface 110 of the housing 100. The heat dissipation structure 300 includes a ventilation duct 320, which is fixedly connected to the center of the top surface 110 of the housing 100 and connects the interior of the housing 100 with the exterior. A fan 310 is fixedly connected to the ventilation duct 320 located outside the housing 100, and an air outlet 330 is fixedly connected to the ventilation duct 320 located inside the housing 100. The sidewalls of the air outlet 330 are evenly distributed with multiple air outlet holes. The fan 310 delivers external cold air through the air outlet 330 into the interior of the housing 100 for heat dissipation.

[0050] The present invention uses the heat dissipation structure 300 to dissipate heat for the batteries inside the box 100. When the sensor 900 is in a normal monitoring state, the movable wall panel 200 is engaged with the notch of the box 100. At this time, the heat insulation plate 510 is located between the side surface 120 of the corresponding box 100 and the battery rack 600. The wind is guided by the heat insulation plate 510, and the wind speed becomes faster and goes upward, which can not only make the heat dissipation effect of the corresponding battery rack 600 better, but also the sensor 900 can better monitor the battery status on the corresponding battery rack 600, thereby improving the monitoring effect.

[0051] Furthermore, the end of the air outlet 330 near the bottom surface 140 of the housing 100 is closed, and the end of the air outlet 330 near the ventilation pipe 320 is connected to the ventilation pipe 320 through a tapered pipe 340. The diameter of the tapered pipe 340 increases from top to bottom. The structure of the tapered pipe 340 improves the air supply efficiency of the fan 310.

[0052] Furthermore, a first filter is installed in the ventilation pipe 320 to prevent external impurities from entering the interior of the box body 100.

[0053] Furthermore, a rain shield structure 400 is installed on the top surface 110 of the housing 100. The rain shield structure 400 includes a rain shield 410. The rain shield 410 is located above the fan 310. A plurality of support frames 420 are provided at the bottom of the rain shield 410. The support frames 420 are fixedly connected to the top surface 110 of the housing 100. The rain shield structure 400 can prevent rainwater from entering the interior of the housing 100 through the fan 310 and the ventilation pipe 320 and affecting the batteries.

[0054] Furthermore, the movable wall panel 200 comprises two movable panels 210 connected at their ends, each with a vent 220 formed above it. A second filter 230 is installed on the vent 220. A fire extinguisher 800 is mounted between the two movable panels 210 via a bracket. By installing the fire extinguisher 800 between the two movable panels 210, if the movable wall panel 200 is removed from the notch of the housing 100 and a battery thermal runaway occurs, personnel can quickly extinguish the problem battery at the notch in the housing 100, thereby improving firefighting efficiency.

[0055] A monitoring method using the above energy storage power station safety monitoring device includes the following steps:

[0056] S1. When the sensor 900 is in a normal monitoring state, the movable wall panel 200 engages with the notch of the box 100. At this time, the heat insulation board 510 is located between the side surface 120 of the corresponding box 100 and the battery rack 600. The heat dissipation structure 300 operates, and the fan 310 draws cold air from the outside of the box 100 into the inside of the box 100. The air is dissipated to the batteries on the surrounding battery racks 600 through the air outlet 330. The air is diverted by the heat insulation board 510, so that the heat dissipation effect of the corresponding battery rack 600 is improved, and the sensor 900 can better monitor the batteries on the corresponding battery rack 600.

[0057] S2. When the batteries on the battery rack are in a thermal runaway state, the sensor 900 detects an abnormality and activates the corresponding transmission motor 730, driving the transmission tooth plate 720 to slide outward in the sliding groove 740, so that the movable wall panel 200 is separated from the notch of the box body 100. The battery rack 600 moves toward the notch of the box body 100 under the drive of the transmission tooth plate 720, achieving rapid ventilation and heat dissipation with the outside world. At this time, the heat insulation plate 510 is located between adjacent battery racks 600 for thermal insulation treatment to prevent the battery in thermal runaway from affecting the batteries on the adjacent battery racks 600.

[0058] S3. When the thermal runaway of the batteries on the battery rack worsens and causes combustion, take out the fire extinguisher 800 between the two movable plates 210 to extinguish the fire. At the same time, cooperate with other fire-fighting equipment to extinguish the fire of the batteries on the battery rack 600 at the notch of the box body 100.

[0059] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this field, several improvements and changes can be made without departing from the creative concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. A safety monitoring device for an energy storage power station, characterized in that: The invention comprises a box body (100), wherein four battery racks (600) are provided inside the box body (100), and batteries are installed on the battery racks (600); rollers are installed at the bottom of the battery racks (600); slots are provided at the four corners of the box body (100), and movable wall panels (200) are provided on the slots, and the movable wall panels (200) are engaged with the slots; the movable wall panels (200) and the battery racks (600) correspond to each other one by one, and the movable wall panels (200) and the corresponding battery racks (600) are connected by a transmission structure (700); The transmission structure (700) includes a fixed rod (710) and a transmission tooth plate (720), one end of the fixed rod (710) is fixedly connected to the top of the battery rack (600), and the other end of the fixed rod (710) is fixedly connected to the movable wall plate (200); a plurality of sliding grooves (740) are provided below the transmission tooth plate (720), and the transmission tooth plate (720) is slidably connected to the corresponding sliding grooves (740); a transmission motor (730) is provided on one side of the transmission tooth plate (720), and a gear is provided at the output end of the transmission motor (730). , the gear meshes with the transmission tooth plate (720); one end of the transmission tooth plate (720) is fixedly connected to the bottom of the battery rack (600), and the other end of the transmission tooth plate (720) is fixedly connected to the movable wall panel (200); the transmission motor (730) and the sliding groove (740) are both fixedly connected to the bottom surface (140) of the box body (100), and four sensors (900) are fixedly provided inside the top surface (110) of the box body (100), and the sensors (900) are located above the battery rack (600) and correspond one to one with the battery rack (600).

2. The energy storage power station safety monitoring device according to claim 1, characterized in that: Each battery rack (600) is provided with a heat insulation structure (500) on one side, and the heat insulation structure (500) includes two heat insulation boards (510); an end of the battery rack (600) close to the center of the box (100) is provided with a hinge frame (610) at the top and bottom, and one end of the hinge frame (610) is provided with two hinge slots (611); a hinge rod (520) is hinged on each hinge slot (611), and an end of the hinge rod (520) away from the hinge slot (611) is fixedly connected to the corresponding heat insulation board (510); a limited position long slot (530) is provided on the hinge rod (520); the upper and lower hinge rods (520) form a group, and the limited long slot (530) of each group of hinge rods (520) are slidably connected to a limited column (540), and the limited column (540) is fixedly connected to the bottom surface (140) of the box (100).

3. The energy storage power station safety monitoring device according to claim 2, characterized in that: When the movable wall panel (200) is engaged with the notch of the box body (100), the heat insulation board (510) is located between the side surface (120) of the corresponding box body (100) and the battery rack (600); when the movable wall panel (200) is separated from the notch of the box body (100), the heat insulation board (510) is located between adjacent battery racks (600).

4. The energy storage power station safety monitoring device according to claim 3, characterized in that: The side surfaces (120) of the box body (100) are each installed with a door body (130), and the bottom surface (140) of the box body (100) is provided with a plurality of supporting legs (150).

5. The energy storage power station safety monitoring device according to claim 4, characterized in that: A heat dissipation structure (300) is provided at the center of the top surface (110) of the box body (100), and the heat dissipation structure (300) includes a ventilation pipe (320), the ventilation pipe (320) is fixedly connected to the center of the top surface (110) of the box body (100), and the ventilation pipe (320) connects the inside of the box body (100) with the outside; a fan (310) is fixedly connected to the ventilation pipe (320) located outside the box body (100), and an air outlet (330) is fixedly connected to the ventilation pipe (320) located inside the box body (100), and a plurality of air outlet holes are evenly opened on the side wall of the air outlet (330).

6. The energy storage power station safety monitoring device according to claim 5, characterized in that: One end of the air outlet (330) close to the bottom surface (140) of the box (100) is closed, and one end of the air outlet (330) close to the ventilation pipe (320) is connected to the ventilation pipe (320) through a tapered pipe (340), and the diameter of the tapered pipe (340) increases continuously from top to bottom.

7. The energy storage power station safety monitoring device according to claim 6, characterized in that: A first filter screen is installed in the ventilation pipe (320).

8. The energy storage power station safety monitoring device according to claim 7, characterized in that: A rain shield structure (400) is installed on the top surface (110) of the box body (100). The rain shield structure (400) includes a rain shield plate (410). The rain shield plate (410) is located above the fan (310). A plurality of support frames (420) are provided at the bottom of the rain shield plate (410). The support frames (420) are fixedly connected to the top surface (110) of the box body (100).

9. The energy storage power station safety monitoring device according to claim 8, characterized in that: The movable wall panel (200) comprises two movable panels (210) whose ends are vertically connected. A vent (220) is provided above the movable panel (210), and a second filter (230) is installed on the vent (220). A fire extinguisher (800) is installed between the two movable panels (210) via a bracket.

10. A monitoring method using the energy storage power station safety monitoring device according to claim 9, characterized in that: The steps include: S1. When the sensor (900) is in a normal monitoring state, the movable wall panel (200) is engaged with the notch of the box (100). At this time, the heat insulation board (510) is located between the side surface (120) of the corresponding box (100) and the battery rack (600). The heat dissipation structure (300) is in operation. The fan (310) draws cold air from the outside of the box (100) into the inside of the box (100) and dissipates heat to the batteries on the surrounding battery racks (600) through the air outlet (330). The wind is diverted through the heat insulation board (510), so that the heat dissipation effect of the corresponding battery rack (600) is better, and the sensor (900) can better monitor the batteries on the corresponding battery rack (600). S2. When the battery on the battery rack is in a thermal runaway state, the sensor (900) detects an abnormality, and the corresponding transmission motor (730) is turned on, driving the transmission tooth plate (720) to slide outward in the sliding groove (740), so that the movable wall plate (200) is separated from the notch of the box (100), and the battery rack (600) moves toward the notch of the box (100) under the drive of the transmission tooth plate (720), thereby achieving rapid ventilation and heat dissipation with the outside world; at this time, the heat insulation plate (510) is located between adjacent battery racks (600) for heat insulation treatment, preventing the battery in thermal runaway from affecting the battery on the adjacent battery rack (600); S3. When the thermal runaway of the batteries on the battery rack worsens and causes combustion, the fire extinguisher (800) between the two movable plates (210) is taken out to extinguish the fire, and at the same time, other fire-fighting equipment is used to treat the batteries on the battery rack (600) at the notch of the box (100).

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