A new energy storage device with fire extinguishing function

Abstract

The present invention belongs to the technical field of energy storage devices, and specifically discloses a new energy storage device with a fire extinguishing function, comprising a shell, a partition is arranged inside the shell, a water cooling unit and a controller are arranged on one side of the partition, and evenly distributed partition blocks are fixedly connected to the other side of the partition, a placement cavity is formed between two of the partition blocks, an energy storage device is arranged inside the placement cavity, a detachable baffle is arranged on the inner wall of the placement cavity, and a water outlet end of the water cooling unit is connected with an outlet pipe; by arranging auxiliary components, a water cooling unit, an outlet pipe and a return pipe, the heat dissipation effect of the coolant on the temperature inside the placement cavity can be improved according to the temperature rise inside the placement cavity during the storage of the energy storage device inside the placement cavity, so as to realize adaptive regulation, avoid the fire caused by the accumulated heat generated after the temperature of the traditional energy storage device abnormally rises and exceeds the normal heat dissipation efficiency, and improve the fireproof performance of the energy storage device.

Description

Technical Field

[0001] The invention belongs to the technical field of energy storage devices, and specifically discloses a new energy storage device with a fire extinguishing function. Background Art

[0002] With the increasing demand for low-carbon and energy-saving development, new energy has become the mainstream trend in the future. The conversion technologies of energy including wind energy, hydropower, solar energy, tidal energy, etc. have become increasingly mature. In order to enable the efficient and reasonable use of new energy, energy storage devices have become a key link. Energy storage devices are usually placed inside the energy storage box. Fires in energy storage devices are mainly caused by rising internal temperature. However, the cooling effect of the current energy storage box on the energy storage device is constant and cannot be adjusted according to the temperature. Summary of the invention

[0003] In view of this, the purpose of the present invention is to propose a new energy storage device with fire extinguishing function to solve the problem that the cooling effect of the energy storage device inside the energy storage box in the prior art is constant and cannot be adjusted adaptively according to the temperature.

[0004] To achieve the above purpose, the present invention provides a new energy storage device with a fire extinguishing function, comprising a shell, a partition is arranged inside the shell, a water cooling unit and a controller are arranged on one side of the partition, a uniformly distributed partition block is fixedly connected to the other side of the partition, a placement cavity is formed between two of the partition blocks, an energy storage device is arranged inside the placement cavity, a detachable baffle is arranged on the inner wall of the placement cavity, a water outlet end of the water cooling unit is connected to a guide pipe, a water inlet end of the water cooling unit is connected to a return pipe, an auxiliary component is arranged inside the partition block, and a connecting component located on the side of the energy storage device away from the baffle is arranged inside the placement cavity;

[0005] Among them, the auxiliary component includes a heat exchange channel opened in a serpentine line inside the partition block, one end of the heat exchange channel is connected to the return pipe, and the other end of the heat exchange channel is connected to the outlet pipe. The surface of the partition block is provided with evenly distributed grooves, and the inner wall of the groove is fixedly connected to the second heat conduction plate, and the inner wall of the groove is fixedly connected to the fixed plate located below the second heat conduction plate.

[0006] In the above technical solution, preferably, a trigger cavity is formed between the top of the fixing plate and the bottom of the second heat conducting plate, and an adjustment cavity is formed between the bottom of the fixing plate and the inner wall of the groove.

[0007] In the above technical solution, preferably, the inner wall of the heat exchange channel is fixedly connected with evenly distributed heat exchange rings, the surface of the heat exchange rings is fixedly connected with heat exchange fins, and the other end of the heat exchange fins passes through the partition block and is flush with the top surface of the partition block.

[0008] In the above technical solution, preferably, a connecting cavity is opened inside the heat exchange ring, and the inner wall of the connecting cavity is opened with evenly distributed storage cavities, the inner wall of the storage cavity is slidably connected with a pressure plate, and the surface of the pressure plate is fixedly connected with a blocking rod, and the other end of the blocking rod passes through the storage cavity and extends to the inner side of the heat exchange ring, and the surface of the pressure plate is fixedly connected with a second spring, and the other end of the second spring is fixedly connected to the inner wall of the storage cavity.

[0009] In the above technical solution, preferably, the auxiliary component also includes a plurality of mounting shells fixedly connected to the inside of the partition block, the inner wall of the mounting shell is slidably connected with an adjustment plate, the bottom of the adjustment plate and the inner wall of the mounting shell are filled with hydraulic oil, the top of the adjustment plate is fixedly connected with a trigger rod, the upper end of the trigger rod passes through the mounting shell and the fixed plate in sequence and is flush with the top surface of the fixed plate.

[0010] In the above technical solution, preferably, the surface of the mounting shell is connected with two symmetrically distributed conduits, and the other end of the conduit is connected with the adjacent connecting cavity.

[0011] In the above technical solution, preferably, the connecting assembly includes a mounting plate fixedly connected to the inner wall of the placement cavity, the surface of the mounting plate is slidably connected with a joint, the joint is used to connect to the energy storage device, and the surface of the joint is fixedly connected with two first heat conducting plates that are symmetrically distributed.

[0012] In the above technical solution, preferably, two symmetrically distributed mounting boxes are fixedly connected to one side of the mounting plate away from the energy storage device, an extrusion plate is slidably connected to the inner wall of the mounting box, two symmetrically distributed heat-conducting rods are fixedly connected to one side of the extrusion plate, the other end of the heat-conducting rods passes through the mounting box and the mounting plate in sequence and is fixedly connected to the surface of the first heat-conducting plate, and a first spring is fixedly connected between the other side of the extrusion plate and the inner wall of the mounting box.

[0013] In the above technical solution, preferably, the extrusion plate is a component made of ferrous metal material, carbon dioxide gas is filled between one side of the extrusion plate close to the first spring and the interior of the installation box, and thermal expansion liquid is filled between the other side of the extrusion plate and the interior of the installation box, and two symmetrically distributed installation tubes are fixedly connected to the inner wall of the installation box, and the other end of the installation tube passes through the extrusion plate, the installation box and the installation plate in sequence, and evenly distributed through holes are opened on the surface of one end of the installation tube away from the first heat conduction plate, and a pressure relief valve is arranged inside the installation tube.

[0014] In the above technical solution, preferably, an electromagnet is provided on the inner wall of the installation box, and a smoke sensor is provided on a side of the installation plate close to the energy storage device.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] By providing auxiliary components, a water cooling unit, an outlet pipe and a return pipe, the heat dissipation effect of the coolant on the temperature inside the placement cavity can be improved according to the temperature rise inside the placement cavity during the storage process of the energy storage device inside the placement cavity, thereby achieving adaptive adjustment, avoiding the fire caused by the accumulated heat generated when the temperature of the traditional energy storage device rises abnormally and exceeds the normal heat dissipation efficiency, and improving the fire resistance of the energy storage device.

[0017] By setting up a connection component, when a fire occurs inside the placement cavity, the connector connected to the external wire can be actively separated from the energy storage device, preventing the fire from being transmitted to other locations along the external wire of the connector box, reducing the losses caused by the fire, and at the same time, injecting carbon dioxide into the interior of the placement cavity to extinguish the fire, thereby achieving the purpose of extinguishing the fire.

[0018] Through the cooperation of the smoke sensor, controller and battery iron, the smoke sensor can be used to detect smoke when it is generated in the early stage of a fire. After the smoke is detected, the signal is transmitted to the controller. The controller activates the electromagnet to adsorb the extrusion plate constructed of iron metal materials, thereby accelerating the separation of the joint and the energy storage device and accelerating the discharge of carbon dioxide, so that it can extinguish the fire in the early stage of the fire and improve the fire extinguishing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the distribution of the energy storage device, partition, partition block and water cooling unit of the present invention;

[0021] Figure 3 It is a schematic diagram of the distribution of the connection components and auxiliary components of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the connection assembly of the present invention;

[0023] Figure 5 for Figure 4 A magnified view of middle;

[0024] Figure 6 It is a schematic diagram of the distribution of the smoke sensor and the mounting plate of the present invention;

[0025] Figure 7 It is a schematic diagram of the distribution of heat exchange channels and grooves of the present invention;

[0026] Figure 8 It is a schematic diagram of the distribution of the fixing plate, the trigger rod, the mounting shell and the heat exchange fin plate of the present invention;

[0027] Fig. 9 for Figure 8 Enlarged view of B.

[0028] In the figure: 1. housing; 101. controller; 102. water cooling unit; 103. baffle; 104. outlet pipe; 105. partition block; 106. partition; 107. return pipe; 2. energy storage device; 3. connection assembly; 301. mounting plate; 302. joint; 303. first heat conducting plate; 304. mounting box; 305. mounting pipe; 306. through hole; 307. pressure relief valve; 308. extrusion plate; 309. first spring; 310 , electromagnet; 311, smoke sensor; 312, heat conducting rod; 4, auxiliary components; 401, heat exchange channel; 402, groove; 403, second heat conducting plate; 404, fixing plate; 405, trigger rod; 406, mounting shell; 407, adjustment plate; 408, conduit; 409, heat exchange fin; 410, heat exchange ring; 411, blocking rod; 412, pressure plate; 413, connecting cavity; 414, second spring; 415, storage cavity. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] like Figure 1-Figure 9 A new energy storage device with a fire extinguishing function shown in the figure comprises a shell 1, a partition 106 is arranged inside the shell 1, a water cooling unit 102 and a controller 101 are arranged on one side of the partition 106, and evenly distributed partition blocks 105 are fixedly connected to the other side of the partition 106, a placement cavity is formed between the two partition blocks 105, an energy storage device 2 is arranged inside the placement cavity, a detachable baffle 103 is arranged on the inner wall of the placement cavity, a water outlet end of the water cooling unit 102 is connected to a guide pipe 104, and a water inlet end of the water cooling unit 102 is connected to a return pipe 107, an auxiliary component 4 is arranged inside the partition block 105, and a connecting component 3 located on the side of the energy storage device 2 away from the baffle 103 is arranged inside the placement cavity;

[0032] Among them, the auxiliary component 4 includes a heat exchange channel 401 which is opened in a serpentine line inside the partition block 105, one end of the heat exchange channel 401 is connected to the return pipe 107, and the other end of the heat exchange channel 401 is connected to the outlet pipe 104. The surface of the partition block 105 is provided with evenly distributed grooves 402, and the inner wall of the groove 402 is fixedly connected to the second heat conduction plate 403, and the inner wall of the groove 402 is fixedly connected to the fixed plate 404 located below the second heat conduction plate 403.

[0033] The water cooling unit 102 can inject the coolant into the heat exchange channel 401 through the outlet pipe 104 and guide it back to the inside of the water cooling unit 102 through the return pipe 107 to complete the circulation of the coolant.

[0034] like Figure 1-Figure 9 As shown, a trigger cavity is formed between the top of the fixing plate 404 and the bottom of the second heat conducting plate 403 , and an adjustment cavity is formed between the bottom of the fixing plate 404 and the inner wall of the groove 402 .

[0035] The inner wall of the heat exchange channel 401 is fixedly connected with evenly distributed heat exchange rings 410 , and the surface of the heat exchange rings 410 is fixedly connected with heat exchange fins 409 . The other end of the heat exchange fins 409 passes through the partition block 105 and is flush with the top surface of the partition block 105 .

[0036] A connecting cavity 413 is provided inside the heat exchange ring 410, and the inner wall of the connecting cavity 413 is provided with evenly distributed storage cavities 415. The inner wall of the storage cavity 415 is slidably connected to a pressure plate 412, and a blocking rod 411 is fixedly connected to the surface of the pressure plate 412, and the other end of the blocking rod 411 passes through the storage cavity 415 and extends to the inner side of the heat exchange ring 410, and a second spring 414 is fixedly connected to the surface of the pressure plate 412, and the other end of the second spring 414 is fixedly connected to the inner wall of the storage cavity 415.

[0037] The auxiliary component 4 also includes a plurality of mounting shells 406 fixedly connected to the interior of the partition block 105, the inner wall of the mounting shell 406 is slidably connected with an adjusting plate 407, the bottom of the adjusting plate 407 and the inner wall of the mounting shell 406 are filled with hydraulic oil, the top of the adjusting plate 407 is fixedly connected with a trigger rod 405, the upper end of the trigger rod 405 passes through the mounting shell 406 and the fixed plate 404 in sequence and is flush with the top surface of the fixed plate 404.

[0038] The surface of the mounting shell 406 is connected with two symmetrically distributed conduits 408 , and the other end of the conduit 408 is connected with the adjacent connecting cavity 413 .

[0039] When the coolant flows inside the heat exchange channel 401, the cold energy can be dissipated and cooled down by the partition block 105 to the energy storage device 2, thereby reducing the heat and preventing fire caused by excessive heat. When the temperature of the energy storage device 2 rises abnormally, the temperature inside the placement chamber gradually rises, and the heat is absorbed by the second heat conducting plate 403 to heat the air inside the trigger chamber. Due to the partition of the fixed plate 404 and the absorption of heat by the air inside the trigger chamber, the temperature inside the trigger chamber is higher than the temperature inside the adjustment chamber, thereby generating a pressure difference under the action of the temperature difference, and then the trigger rod 405 can be driven to gradually slide down under the action of the pressure difference. In this process, the adjustment plate 407 can be driven to squeeze the hydraulic oil stored in the mounting shell 406, so that the hydraulic oil can be adjusted. The pressurized oil is injected into the interior of the connecting cavity 413 through the conduit 408, and then can be injected into the interior of the storage cavity 415. During this process, as the hydraulic oil is injected, the pressure plate 412 inside the storage cavity 415 can be gradually squeezed, so that the pressure plate 412 compresses the second spring 414 and drives the blocking rod 411 to pass through the storage cavity 415 and insert into the inner side of the heat exchange ring 410, thereby increasing the volume of the blocking rod 411 inserted into the inner side of the heat exchange ring 410, thereby increasing the resistance of the coolant during the flow of the coolant and reducing its flow rate, so that the cold energy of the coolant is fully absorbed by the partition block 105 and the heat exchange ring 410, and the heat exchange fin plate 409 is used to strengthen the cooling of the temperature inside the placement cavity, thereby improving the heat dissipation and cooling effect, and can achieve the effect of self-regulating the heat dissipation efficiency according to the temperature inside the placement cavity.

[0040] like Figure 1-Figure 9 As shown, the connection component 3 includes a mounting plate 301 fixedly connected to the inner wall of the placement cavity, and a joint 302 is slidably connected to the surface of the mounting plate 301. The joint 302 is used to connect to the energy storage device 2, and two first heat conducting plates 303 are fixedly connected to the surface of the joint 302 and are symmetrically distributed.

[0041] Two symmetrically distributed mounting boxes 304 are fixedly connected to one side of the mounting plate 301 away from the energy storage device 2, an extrusion plate 308 is slidably connected to the inner wall of the mounting box 304, two symmetrically distributed heat-conducting rods 312 are fixedly connected to one side of the extrusion plate 308, the other end of the heat-conducting rod 312 passes through the mounting box 304 and the mounting plate 301 in sequence and is fixedly connected to the surface of the first heat-conducting plate 303, and a first spring 309 is fixedly connected between the other side of the extrusion plate 308 and the inner wall of the mounting box 304.

[0042] The extrusion plate 308 is a component made of ferrous metal material. Carbon dioxide gas is filled between one side of the extrusion plate 308 close to the first spring 309 and the interior of the installation box 304. Thermal expansion liquid is filled between the other side of the extrusion plate 308 and the interior of the installation box 304. Two symmetrically distributed installation tubes 305 are fixedly connected to the inner wall of the installation box 304. The other end of the installation tube 305 passes through the extrusion plate 308, the installation box 304 and the installation plate 301 in sequence. Evenly distributed through holes 306 are opened on the surface of one end of the installation tube 305 away from the first heat conducting plate 303, and a pressure relief valve 307 is arranged inside the installation tube 305.

[0043] When a fire occurs, the temperature of the energy storage device 2 will rise rapidly, and the first heat conducting plate 303 will absorb a large amount of heat to heat the heat expansion liquid stored in the installation box 304 through the heat conducting rod 312, so that the expansion overcomes the elastic force of the first spring 309 and drives the extrusion plate 308 to slide along the inside of the installation box 304. In this process, the joint 302 can be driven to separate from the energy storage device 2 to prevent the fire from being transmitted to other positions through the joint 302. At the same time, during the movement of the extrusion plate 308, the carbon dioxide stored in the installation box 304 can be squeezed to increase its pressure, so that the carbon dioxide can enter the inside of the installation pipe 305 through the through hole 306. As the pressure increases, it can overcome the pressure of the pressure relief valve 307 and be discharged to the energy storage device 2 to extinguish the fire, effectively preventing the further spread of the fire.

[0044] like Figure 1-Figure 9 As shown, an electromagnet 310 is disposed on the inner wall of the installation box 304 , and a smoke sensor 311 is disposed on a side of the installation plate 301 close to the energy storage device 2 .

[0045] The smoke sensor 311 can detect smoke when a fire occurs inside the placement chamber and transmit a signal to the controller 101. The controller 101 activates the electromagnet 310 to adsorb the extrusion plate 308 constructed of iron metal material, thereby accelerating the separation of the connector 302 and the energy storage device 2 and accelerating the discharge of carbon dioxide, so that the fire can be extinguished at the early stage of the fire, thereby improving the fire extinguishing effect.

[0046] Working principle: When the coolant flows inside the heat exchange channel 401, it can transfer the cold energy through the partition block 105 to dissipate the heat and cool down the energy storage device 2, thereby reducing the heat and preventing fires caused by excessive heat. When the temperature of the energy storage device 2 rises abnormally, the temperature inside the placement chamber gradually rises, and the heat is absorbed by the second heat conducting plate 403 to heat the air inside the trigger chamber. Due to the partition of the fixed plate 404 and the absorption of heat by the air inside the trigger chamber, the temperature inside the trigger chamber is higher than the temperature inside the regulating chamber, thereby generating a pressure difference under the action of the temperature difference, driving the trigger rod 405 to gradually slide down, thereby enabling the hydraulic oil to be injected into the connecting chamber 413 and the storage chamber 415. The blocking rod 411 is inserted into the inner side of the heat exchange ring 410 through the storage cavity 415, thereby increasing the volume of the blocking rod 411 inserted into the inner side of the heat exchange ring 410, thereby increasing the resistance of the coolant in the flow process and reducing its flow rate, so that the cold energy of the coolant is fully absorbed by the partition block 105 and the heat exchange ring 410, and the heat exchange fin plate 409 is used to strengthen the cooling of the temperature inside the placement cavity, thereby improving the heat dissipation and cooling effect, and can achieve the effect of self-regulating the heat dissipation efficiency according to the temperature inside the placement cavity. The setting of the connecting component 3 can separate the joint 302 from the energy storage device 2 when a fire occurs, and can discharge carbon dioxide for fire extinguishing, so that the fire can be extinguished in the early stage of the fire, thereby improving the fire extinguishing effect.

[0047] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A new energy storage device with fire extinguishing function, comprising a housing (1), characterized in that: A partition (106) is provided inside the housing (1), a water cooling unit (102) and a controller (101) are provided on one side of the partition (106), evenly distributed partition blocks (105) are fixedly connected to the other side of the partition (106), a placement cavity is formed between the two partition blocks (105), an energy storage device (2) is provided inside the placement cavity, a detachable baffle (103) is provided on the inner wall of the placement cavity, a water outlet end of the water cooling unit (102) is connected to a delivery pipe (104), a water inlet end of the water cooling unit (102) is connected to a return pipe (107), an auxiliary component (4) is provided inside the partition block (105), and a connecting component (3) located on a side of the energy storage device (2) away from the baffle (103) is provided inside the placement cavity; The auxiliary component (4) comprises a heat exchange channel (401) formed in a serpentine shape and arranged inside the partition block (105); one end of the heat exchange channel (401) is connected to the return pipe (107); the other end of the heat exchange channel (401) is connected to the outlet pipe (104); the surface of the partition block (105) is provided with evenly distributed grooves (402); the inner wall of the groove (402) is fixedly connected to a second heat conducting plate (403); and the inner wall of the groove (402) is fixedly connected to a fixing plate (404) located below the second heat conducting plate (403); The inner wall of the heat exchange channel (401) is fixedly connected to uniformly distributed heat exchange rings (410), a connecting cavity (413) is provided inside the heat exchange ring (410), the inner wall of the connecting cavity (413) is provided with uniformly distributed storage cavities (415), the inner wall of the storage cavity (415) is slidably connected to a pressure plate (412), a blocking rod (411) is fixedly connected to the surface of the pressure plate (412), the other end of the blocking rod (411) passes through the storage cavity (415) and extends to the inner side of the heat exchange ring (410), the surface of the pressure plate (412) is fixedly connected to a second spring (414), the other end of the second spring (414) is fixedly connected to the inner wall of the storage cavity (415); The auxiliary component (4) further comprises a plurality of mounting shells (406) fixedly connected to the interior of the partition block (105); an adjusting plate (407) is slidably connected to the inner wall of the mounting shell (406); hydraulic oil is filled between the bottom of the adjusting plate (407) and the inner wall of the mounting shell (406); a trigger rod (405) is fixedly connected to the top of the adjusting plate (407); the upper end of the trigger rod (405) passes through the mounting shell (406) and the fixing plate (404) in sequence and is flush with the top surface of the fixing plate (404); The surface of the installation shell (406) is connected to two symmetrically distributed conduits (408), and the other end of the conduit (408) is connected to an adjacent connecting cavity (413).

2. A new energy storage device with fire extinguishing function according to claim 1, characterized in that: A trigger cavity is formed between the top of the fixing plate (404) and the bottom of the second heat conducting plate (403), and an adjustment cavity is formed between the bottom of the fixing plate (404) and the inner wall of the groove (402).

3. A new energy storage device with fire extinguishing function according to claim 1, characterized in that: A heat exchange fin plate (409) is fixedly connected to the surface of the heat exchange ring (410), and the other end of the heat exchange fin plate (409) passes through the partition block (105) and is flush with the top surface of the partition block (105).

4. A new energy storage device with fire extinguishing function according to claim 1, characterized in that: The connection assembly (3) comprises a mounting plate (301) fixedly connected to the inner wall of the placement cavity, a joint (302) being slidably connected to the surface of the mounting plate (301), the joint (302) being used to connect to the energy storage device (2), and two first heat conducting plates (303) being fixedly connected and symmetrically distributed to the surface of the joint (302).

5. A new energy storage device with fire extinguishing function according to claim 4, characterized in that: Two symmetrically distributed installation boxes (304) are fixedly connected to one side of the installation plate (301) away from the energy storage device (2); an extrusion plate (308) is slidably connected to the inner wall of the installation box (304); two symmetrically distributed heat-conducting rods (312) are fixedly connected to one side of the extrusion plate (308); the other ends of the heat-conducting rods (312) penetrate the installation box (304) and the installation plate (301) in sequence and are fixedly connected to the surface of the first heat-conducting plate (303); and a first spring (309) is fixedly connected between the other side of the extrusion plate (308) and the inner wall of the installation box (304).

6. A new energy storage device with fire extinguishing function according to claim 5, characterized in that: The extrusion plate (308) is a component made of iron metal material. Carbon dioxide gas is filled between one side of the extrusion plate (308) close to the first spring (309) and the interior of the installation box (304). Thermal expansion liquid is filled between the other side of the extrusion plate (308) and the interior of the installation box (304). Two symmetrically distributed installation tubes (305) are fixedly connected to the inner wall of the installation box (304). The other end of the installation tube (305) passes through the extrusion plate (308), the installation box (304) and the installation plate (301) in sequence. Evenly distributed through holes (306) are opened on the surface of one end of the installation tube (305) away from the first heat conducting plate (303). A pressure relief valve (307) is arranged inside the installation tube (305).

7. A new energy storage device with fire extinguishing function according to claim 6, characterized in that: An electromagnet (310) is provided on the inner wall of the installation box (304), and a smoke sensor (311) is provided on a side of the installation plate (301) close to the energy storage device (2).

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