Battery energy storage cabinet capable of preventing thermal runaway

Abstract

The thermal runaway prevention battery energy storage cabinet comprises a mounting bracket, an inner shell is arranged on the inner wall of the mounting bracket, partition plates are sequentially arranged on the inner wall of the inner shell from top to bottom, and storage assemblies are arranged on the base surfaces of the partition plates; through the thermal runaway prevention assembly, the device can monitor the temperature of the battery, and the cabinet door is closed through the electromagnet to carry out airtight isolation on the thermal runaway battery; the limiting block and the baffle plate are heated and melted to lose the limiting effect on the compression spring, the compressed compression spring is unfolded, the compression spring pushes the sliding rod to slide on the inner wall of the sliding groove through the positioning block, and the sliding rod drives the upper shell and the thermal runaway battery to move towards one side; the thermal runaway battery loses the support of the upper shell and falls into the inner cavity of the mounting base to be isolated; the spreading time is delayed through poison gas generated by the thermal runaway battery and high-temperature sealing in the inner cavity of the mounting base, and workers are evacuated in time.

Description

Technical Field

[0001] The present invention relates to the technical field of battery energy storage cabinets, and in particular to a battery energy storage cabinet that is resistant to thermal runaway. Background Art

[0002] Battery energy storage cabinets play a vital role in many key areas of modern society. As an electrical energy storage device, their main functions include battery storage and charge and discharge management. However, due to their closed structure and huge storage energy, once the internal temperature of the battery reaches the ignition point of the material, thermal runaway may be triggered. This phenomenon can trigger a series of chain reactions, causing adjacent battery cells to successively experience thermal runaway, which may eventually evolve into a fire accident involving the entire battery energy storage. The characteristics of battery energy storage fires include violent combustion, rapid heat spread, strong toxicity, large amounts of smoke and dust, high danger, and easy re-ignition and difficulty in extinguishing; After a battery has thermal runaway, how can we prevent the high temperature generated by the thermal runaway battery from affecting the batteries in adjacent cabinets, thereby causing large-scale thermal runaway? Another problem is that after a battery has thermal runaway, it burns violently and the heat spreads rapidly. It is highly toxic, produces a lot of smoke and is very dangerous, and can easily spread quickly in a small space. How can we isolate the thermal runaway battery to prevent the toxic smoke and high temperature from affecting the evacuation of staff?

[0003] For example, the prior art represented by the comparative document, a lithium-ion battery energy storage cabinet that prevents thermal runaway (publication number CN219979681U), is a patented technology that includes a cabinet, a battery module and a prevention and control system. The battery module is provided with multiple batteries, which are arranged regularly in the cabinet. The battery module includes a battery cell, a drawer cabinet and a clamping assembly. The battery cells are arranged in the drawer cabinet, and adjacent drawers are positioned by the clamping assembly. The prevention and control system includes a water tank, a main pipeline, a branch pipeline and a nozzle. The water tank is arranged at the bottom of the cabinet. The main pipeline is connected to the water tank, and the branch pipeline is connected to the nozzle. The solenoid valve and the nozzle are respectively located on the inner and outer sides of the side wall, and the water tank is provided with a refrigeration component. The utility model of the lithium-ion battery energy storage cabinet that prevents thermal runaway of lithium-ion batteries, avoids the risk of thermal runaway of adjacent batteries caused by thermal runaway of battery cells, and improves the safety and reliability of the energy storage system, thereby effectively solving the problems of the prior art. However, its structure still needs to be improved, as follows: In this solution, battery overheating is only one of the many reasons for thermal runaway of batteries. There are many other reasons for thermal runaway of batteries, including overcharging or over-discharging, short circuit, manufacturing defects, external damage, improper charging. Only using low-temperature liquid as a cooling medium to prevent thermal runaway can only achieve a cooling balance effect on the battery module, and cannot prevent battery thermal runaway caused by other reasons. Battery thermal runaway is usually caused by local thermal reactions and may further cause chain thermal runaway of adjacent batteries. How to prevent battery thermal runaway in advance and monitor it to prevent fire problems. Summary of the invention

[0004] The present invention provides a battery energy storage cabinet that is resistant to thermal runaway to solve the above-mentioned problems.

[0005] To achieve the above object, the present invention provides the following technical solutions: A battery energy storage cabinet for preventing thermal runaway comprises a mounting bracket, an inner shell is arranged on the inner wall of the mounting bracket, partitions are arranged on the inner wall of the inner shell in sequence from top to bottom, and a storage assembly is arranged on the base surface of the partition; The storage component includes a bottom shell body, the bottom shell body is arranged on the outer wall of the partition, the outer wall of the bottom shell body is provided with an inclined groove, the inner wall opposite to the inclined groove is provided with a mounting block, the inner wall of the mounting block is provided with a sliding groove, the inner wall of the sliding groove is slidably connected with a sliding rod, the outer wall of the sliding rod is equidistantly provided with connecting blocks from left to right, and the outer wall of the connecting block is installed with an upper shell body, the outer wall of the upper shell body is equidistantly arranged with an anti-sliding block in an array from front to back, one side of the anti-sliding block and the outer wall of the upper shell body are equidistantly provided with a first through groove, a positioning block is installed between the connecting blocks and the outer wall of the sliding rod, a fixing plate is installed on the inner wall of the inclined groove through bolts, a limiting block is plugged and pulled out on the inner wall of the fixing plate, a compression spring is embedded and installed on the inner wall of the limiting block at equal distances from left to right, a baffle is installed on one side of the compression spring and the outer wall of the fixing plate, and the outer wall of the baffle is connected with a positioning block, and the limiting block and the baffle cooperate with each other to limit the compression spring.

[0006] As a preferred solution of the present invention, a controller is installed on the outer wall of the inner shell, a thermal runaway prevention component is installed on the outer wall of the mounting bracket, and a fire extinguishing component is installed on the outer wall of the mounting bracket; The inclined groove is inclined at 10 degrees relative to the horizontal plane, and the outer wall of the anti-sliding block is flush with the outer wall corresponding to the partition; The fire extinguishing assembly includes an outer shell and a mounting base, wherein the outer shell is mounted on the outer wall of the inner shell, and the connection between the outer shell and the inner shell is a connecting structure, and the mounting base is mounted at the bottom corner of the mounting bracket, and a connecting groove is provided on the outer wall of the mounting base just below the outer shell, and a mounting plate is installed on the inner wall of the mounting base just below the connecting groove.

[0007] As a preferred solution of the present invention, a rotating rod is rotatably connected to the opposite inner walls of the mounting plate, a mounting base is rotatably connected to the outer wall of the rotating rod, a shield is installed on the outer wall of the mounting base, limiting springs are equidistantly arranged on the inner wall of the shield, and one end of the limiting spring is connected to the inner wall of the mounting base, wherein the shield is located in the inner cavity of the connecting groove.

[0008] As a preferred solution of the present invention, a limit plate is provided on one side of the baffle and at the port of the connecting groove, and the limit plate serves to limit the baffle. A temperature sensor is provided on the inner wall of the mounting base, a pressure relief valve is provided on the outer wall of the mounting base, an electric-controlled fire extinguisher is installed on the outer wall of the mounting base and at a position symmetrical to the pressure relief valve, and a step is provided on the outer wall of the mounting base.

[0009] As a preferred solution of the present invention, the thermal runaway prevention component includes an infrared temperature detector, a buzzer, an electromagnet and a door panel. The infrared temperature detector is installed on the inner wall of the inner shell from top to bottom in sequence, and the infrared temperature detector is located between the partitions. The buzzer is installed on the inner wall of the inner shell from top to bottom in sequence, and the buzzer is located on one side of the infrared temperature detector.

[0010] As a preferred solution of the present invention, the electromagnets are provided in two groups at the ports of the inner shell, and the electromagnets are in a symmetrical structure, the door panel is mounted on the outer wall of the mounting bracket through a hinge, and a magnetic adsorption block is installed on the inner wall of the door panel, wherein the magnetic adsorption block and the electromagnet are connected in a magnetic manner, and a heat insulation plate is provided on one side of the magnetic adsorption block on the inner wall of the door panel.

[0011] As a preferred solution of the present invention, a handle is installed on the outer wall of the door panel, and the door panel is provided with multiple groups and respectively located at the ports of the inner shell, and the handle is provided with multiple groups and respectively located on the outer wall of the door panel.

[0012] As a preferred solution of the present invention, the controller is respectively connected to a temperature sensor, an electric-controlled fire extinguisher, an infrared temperature measuring detector, a buzzer and an electromagnet through wires, and the connection method is electrical connection. The materials of the partition, the heat insulation board and the door panel are all high-temperature resistant heat-insulating materials, the materials of the anti-sliding block, the limit block and the baffle are all plastic materials, the compression spring is a compressed spring, and the cross-section of the baffle is a concave structure.

[0013] The beneficial effects of the present invention are described in detail in the detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2This is a schematic diagram of the unfolded structure of the cabinet door of the present invention; Figure 3 It is a side view structural schematic diagram of the present invention; Figure 4 It is a schematic diagram of the overall analysis structure of the present invention; Figure 5 It is a schematic diagram of the structure of the bottom shell of the present invention; Figure 6 It is a schematic diagram of the exploded structure of the storage assembly of the present invention; Figure 7 It is a schematic diagram of the structure of the mounting base of the present invention; Figure 8 It is a schematic diagram of the anti-sliding block structure of the present invention; Fig. 9 It is an enlarged schematic diagram of structure A of the present invention.

[0015] In the figure: 1, mounting bracket; 2, inner shell; 3, partition; 4, storage assembly; 401, bottom shell; 402, inclined groove; 403, mounting block; 404, slide groove; 405, slide rod; 406, connecting block; 407, upper shell; 408, anti-sliding block; 409, first through groove; 410, positioning block; 411, bolt; 412, fixing plate; 413, limit block; 414, compression spring; 415, baffle; 5, controller; 6, thermal runaway prevention assembly; 601, infrared temperature detection Detector; 602, buzzer; 603, electromagnet; 604, door panel; 605, hinge; 606, magnetic adsorption block; 607, heat insulation board; 7, fire extinguishing assembly; 701, outer shell; 702, mounting base; 703, connecting groove; 704, mounting plate; 705, rotating rod; 706, mounting bottom plate; 707, shield; 708, limit spring; 709, limit plate; 710, temperature sensor; 711, pressure relief valve; 712, electric fire extinguisher; 713, step; 8, handle. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0017] Example: See Figure 1-9A thermal runaway-proof battery energy storage cabinet shown includes a mounting bracket 1, an inner shell 2 is arranged on the inner wall of the mounting bracket 1, partitions 3 are arranged on the inner wall of the inner shell 2 from top to bottom, a storage component 4 is arranged on the base surface of the partition 3, a controller 5 is installed on the outer wall of the inner shell 2, a thermal runaway-proof component 6 is installed on the outer wall of the mounting bracket 1, and a fire extinguishing component 7 is installed on the outer wall of the mounting bracket 1; In this embodiment, specific reference Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 8 The storage component 4 includes a bottom shell 401, which is arranged on the outer wall of the partition 3, and an inclined groove 402 is provided on the outer wall of the bottom shell 401, wherein the inclined groove 402 is inclined 10 degrees relative to the horizontal plane, and a mounting block 403 is provided on the inner wall opposite to the inclined groove 402, and a slide groove 404 is provided on the inner wall of the mounting block 403, and a slide rod 405 is slidably connected to the inner wall of the slide groove 404, and a connecting block 406 is equidistantly arranged on the outer wall of the slide rod 405 from left to right, and an upper shell 407 is installed on the outer wall of the connecting block 406, and an anti-slip block 408 is arranged in an array equidistant from front to back on the outer wall of the upper shell 407, and the outer wall of the anti-slip block 408 is flush with the outer wall corresponding to the partition 3, and the anti-slip A first through groove 409 is equidistantly provided on one side of the block 408 and on the outer wall of the upper shell 407, a positioning block 410 is installed between the connecting blocks 406 and on the outer wall of the slide rod 405, a fixing plate 412 is installed on the inner wall of the inclined groove 402 through a bolt 411, a limiting block 413 is plugged and installed on the inner wall of the fixing plate 412, and compression springs 414 are embedded and installed on the inner wall of the limiting block 413 at equal distances from left to right, a baffle 415 is installed on one side of the compression spring 414 and on the outer wall of the fixing plate 412, and the outer wall of the baffle 415 is connected with the positioning block 410, the limiting block 413 and the baffle 415 cooperate with each other to limit the compression spring 414, and the cross-section of the baffle 415 is a concave structure.

[0018] In this embodiment, specific reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 and Fig. 9The fire extinguishing assembly 7 includes an outer shell 701 and a mounting base 702. The outer shell 701 is mounted on the outer wall of the inner shell 2, and the connection between the outer shell 701 and the inner shell 2 is a connecting structure. The mounting base 702 is mounted at the bottom corner of the mounting bracket 1. A connecting groove 703 is provided on the outer wall of the mounting base 702 just below the outer shell 701. A mounting plate 704 is installed on the inner wall of the mounting base 702 just below the connecting groove 703. A rotating rod 705 is rotatably connected to the inner wall opposite to the mounting plate 704. A mounting base plate 706 is rotatably connected to the outer wall of the rotating rod 705. A shield 70 is installed on the outer wall of the mounting base plate 706. 7. Limiting springs 708 are equidistantly arranged on the inner wall of the baffle 707, and one end of the limiting spring 708 is connected to the inner wall of the mounting base 702, wherein the baffle 707 is located in the inner cavity of the connecting groove 703, and a limiting plate 709 is arranged on one side of the baffle 707 and at the port of the connecting groove 703, and the limiting plate 709 plays a limiting role on the baffle 707, a temperature sensor 710 is arranged on the inner wall of the mounting base 702, a pressure relief valve 711 is arranged on the outer wall of the mounting base 702, an electric-controlled fire extinguisher 712 is installed on the outer wall of the mounting base 702 and at a position symmetrical to the pressure relief valve 711, and a step 713 is arranged on the outer wall of the mounting base 702.

[0019] Among them, the connection method between the mounting base 702 and the outer shell 701 is a plug-in connection. When the device needs to be cleaned after use, it is only necessary to unplug the outer shell 701, open the shield 707 to take out the damaged battery, and clean the environment of the inner cavity of the mounting base 702, which is more practical.

[0020] In this embodiment, specific reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The thermal runaway prevention component 6 includes an infrared temperature detector 601, a buzzer 602, an electromagnet 603 and a door panel 604. The infrared temperature detector 601 is installed on the inner wall of the inner shell 2 from top to bottom, and the infrared temperature detector 601 is located between the partitions 3. The buzzer 602 is installed on the inner wall of the inner shell 2 from top to bottom, and the buzzer 602 is located on one side of the infrared temperature detector 601. Two groups of electromagnets 603 are provided at the ports of the inner shell 2, and the electromagnets 603 are symmetrically structured. The door panel 604 is installed on the outer wall of the mounting bracket 1 through a hinge 605. A magnetic adsorption block 606 is installed on the inner wall of the door panel 604, wherein the connection mode between the magnetic adsorption block 606 and the electromagnet 603 is magnetic connection, and a heat insulation board 607 is provided on one side of the magnetic adsorption block 606 located on the inner wall of the door panel 604.

[0021] Among them, a handle 8 is installed on the outer wall of the door panel 604, and the door panel 604 is provided with multiple groups and are respectively located at the ports of the inner shell 2. The handle 8 is provided with multiple groups and are respectively located on the outer wall of the door panel 604. The controller 5 is connected to the temperature sensor 710, the electric-controlled fire extinguisher 712, the infrared temperature measuring detector 601, the buzzer 602 and the electromagnet 603 through wires, and the connection method is electrical connection. Under the action of the device, the materials of the partition 3, the heat insulation board 607 and the door panel 604 are all high-temperature resistant heat-insulating materials. When the thermal runaway battery is isolated in the door panel 604, the partition 3, the heat insulation board 607 and the door panel 604 can well isolate the high temperature of the thermal runaway battery to prevent the high temperature environment from overheating the normal battery and causing thermal runaway.

[0022] Among them, the anti-sliding block 408, the limit block 413 and the baffle 415 are all made of plastic materials. The compression spring 414 is a compressed spring. The compression spring 414 is compressed and sealed in the inner cavity of the limit block 413 for fixation. Only when the limit block 413 is heated and melted, the compression spring 414 will stretch out and take effect.

[0023] When the battery energy storage cabinet for preventing thermal runaway of the present scheme is working, infrared temperature measuring detectors 601 are sequentially installed on the inner wall of the inner shell 2 from top to bottom, and the infrared temperature measuring detector 601 is located between the partitions 3. Buzzers 602 are sequentially installed on the inner wall of the inner shell 2 from top to bottom, and the buzzer 602 is located on one side of the infrared temperature measuring detector 601. When in use, the battery is placed on the base surface of the storage component 4, and the infrared temperature measuring detector 601 located between the partitions 3 measures the temperature of the battery in real time to generate temperature data. At the same time, the infrared temperature measuring detector 601 generates an electrical signal which is transmitted to the controller 5 through a wire. When the local temperature of the battery is abnormal, when the set temperature value is reached, the controller 5 controls the buzzer 602 to be energized to generate a buzzing sound, so as to prompt the staff to promptly check the abnormal battery to prevent the battery from further heating up and causing thermal runaway.

[0024] When thermal runaway has occurred, a magnetic adsorption block 606 is installed on the inner wall of the door panel 604, wherein the connection between the magnetic adsorption block 606 and the electromagnet 603 is magnetic connection, and one side of the magnetic adsorption block 606 is located on the inner wall of the door panel 604. Under the action of a heat insulation board 607, the controller 5 controls the electromagnet 603 to be energized to generate magnetism, and the electromagnet 603 magnetically adsorbs the magnetic adsorption block 606 to close the door panel 604. Under the action of the partition 3, the heat insulation board 607 and the door panel 604, which are all made of high-temperature resistant insulation materials, the partition 3 and the heat insulation board 607 isolate the battery in thermal runaway, and only increase the temperature of the cavity storing a single battery, thereby solving the problem that battery thermal runaway events are usually caused by local thermal reactions and may further cause chain thermal runaway of adjacent batteries. How to prevent battery thermal runaway in advance for monitoring and prevent fire problems.

[0025] Under the action of the first through grooves 409 which are equidistantly provided on one side of the anti-sliding plate 408 and on the outer wall of the upper shell 407, the high-temperature gas generated by the battery after thermal runaway enters the inner cavity of the upper shell 407 through the first through grooves 409, and a fixing plate 412 is installed on the inner wall of the inclined groove 402 through bolts 411, and a limiting block 413 is installed on the inner wall of the fixing plate 412 by plugging and unplugging, and a compression spring 414 is embedded and installed on the inner wall of the limiting block 413 at equal distances from left to right, and a baffle 415 is installed on one side of the compression spring 414 and on the outer wall of the fixing plate 412, and a positioning block 410 is connected to the outer wall of the baffle 415, and the limiting block 413 and the baffle 415 cooperate with each other to limit the compression spring 414 , and the anti-sliding block 408, the limiting block 413 and the baffle 415 are all made of plastic materials, the limiting block 413 and the baffle 415 are melted by heat, the limiting block 413 and the baffle 415 lose their limiting effect on the compression spring 414, the compressed compression spring 414 stretches, and the compression spring 414 pushes the slide bar 405 to slide on the inner wall of the slide groove 404 through the positioning block 410, so that the slide bar 405 drives the upper shell 407 to slide outward along the inclined groove 402, and the upper shell 407 drives the thermal runaway battery to move to one side, and the anti-sliding block 408 will also melt and lose its anti-slip effect, and the thermal runaway battery will also slide to one side along the inclined surface of the upper shell 407 under the action of its own weight.

[0026] By forming the inclined groove 402 into a slope, when the upper shell 407 slides to one side of the inclined groove 402, since the upper shell 407 is connected to the inner wall of the slide groove 404 only by the slide bar 405, under the dead weight of the upper shell 407 and the thermal runaway battery, the thermal runaway battery presses down on the upper shell 407 to apply pressure, thereby causing the upper shell 407 to rotate on the outer wall of the slide bar 405. The thermal runaway battery loses the support of the upper shell 407 and falls into the inner cavity of the outer shell 701. Then the thermal runaway battery falls into the inner cavity of the mounting base 702 for isolation. The thermal runaway battery is automatically discharged from the cabinet space to prevent the thermal runaway battery from affecting normal batteries in other grids, thereby solving the problem of how to prevent the high temperature generated by the thermal runaway battery from affecting the batteries in adjacent cabinets after the battery thermal runaway, thereby causing large-scale thermal runaway.

[0027] A mounting base 706 is rotatably connected to the outer wall of the rotating rod 705, and a shield plate 707 is installed on the outer wall of the mounting base 706. Limiting springs 708 are equidistantly arranged on the inner wall of the shield plate 707, and one end of the limiting spring 708 is connected to the inner wall of the mounting base 702, wherein the shield plate 707 is located in the inner cavity of the connecting groove 703, and a limiting plate 709 is arranged on one side of the shield plate 707 and at the port of the connecting groove 703. The limiting plate 709 limits the shield plate 707. When the thermal runaway battery falls into the inner cavity of the mounting base 702, the shield plate 707 rotates in the opposite direction on the outer wall of the rotating rod 705 under the rebound action of the limiting spring 708, so that the shield plate 707 blocks the connecting groove 703, thereby making the thermal runaway battery sealed in the inner cavity of the mounting base 702.

[0028] By arranging a temperature sensor 710 on the inner wall of the mounting base 702, a pressure relief valve 711 on the outer wall of the mounting base 702, and an electric-controlled fire extinguisher 712 on the outer wall of the mounting base 702 and at a position symmetrical to the pressure relief valve 711, and under the action of a step 713 arranged on the outer wall of the mounting base 702, the temperature sensor 710 generates an electrical signal which is transmitted to the controller 5 through a wire. When the set temperature numerical parameter is reached, the controller 5 controls the electric-controlled fire extinguisher 712 to extinguish the thermal runaway battery. At the same time, when the pressure in the inner cavity of the mounting base 702 is relatively high, the pressure relief valve 711 will relieve the internal pressure. The toxic gas and high temperature generated by the thermal runaway battery are sealed in the inner cavity of the mounting base 702, which greatly delays the spreading time, allowing the staff to be evacuated in time, thereby solving the problem that the battery burns violently after thermal runaway, and the toxic smoke and high temperature generated by the combustion affect the evacuation of the staff.

[0029] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery energy storage cabinet for preventing thermal runaway, comprising a mounting bracket (1), characterized in that: An inner shell (2) is arranged on the inner wall of the mounting bracket (1), partitions (3) are arranged on the inner wall of the inner shell (2) in sequence from top to bottom, and a storage assembly (4) is arranged on the base surface of the partition (3); The storage assembly (4) comprises a bottom shell (401), the bottom shell (401) being arranged on the outer wall of the partition (3), the outer wall of the bottom shell (401) being provided with an inclined groove (402), an installation block (403) being arranged on the inner wall opposite to the inclined groove (402), a slide groove (404) being arranged on the inner wall of the installation block (403), a slide rod (405) being slidably connected to the inner wall of the slide groove (404), connecting blocks (406) being arranged equidistantly from left to right on the outer wall of the slide rod (405), an upper shell (407) being arranged on the outer wall of the connecting block (406), an anti-sliding block (408) being arranged in an array equidistantly from front to back on the outer wall of the upper shell (407), one side of the anti-sliding block (408) and located on the upper shell ( The outer wall of the sliding rod (405) is provided with first through grooves (409) at equal intervals, a positioning block (410) is installed between the connecting blocks (406) and on the outer wall of the sliding rod (405), a fixing plate (412) is installed on the inner wall of the inclined groove (402) via a bolt (411), a limit block (413) is installed on the inner wall of the fixing plate (412) by plugging, a compression spring (414) is installed on the inner wall of the limit block (413) at equal intervals from left to right, a baffle (415) is installed on one side of the compression spring (414) and on the outer wall of the fixing plate (412), and the outer wall of the baffle (415) is connected to the positioning block (410), and the limit block (413) and the baffle (415) cooperate with each other to limit the compression spring (414).

2. A battery energy storage cabinet for preventing thermal runaway according to claim 1, characterized in that: A controller (5) is mounted on the outer wall of the inner shell (2), a thermal runaway prevention component (6) is mounted on the outer wall of the mounting bracket (1), and a fire extinguishing component (7) is mounted on the outer wall of the mounting bracket (1); The inclined groove (402) is inclined at 10 degrees relative to the horizontal plane, and the outer wall of the anti-sliding block (408) is flush with the outer wall corresponding to the partition (3); The fire extinguishing assembly (7) comprises an outer shell (701) and a mounting base (702); the outer shell (701) is mounted on the outer wall of the inner shell (2); and the connection between the outer shell (701) and the inner shell (2) is a connecting structure; the mounting base (702) is mounted at the bottom corner of the mounting bracket (1); a connecting groove (703) is provided on the outer wall of the mounting base (702) just below the outer shell (701); and a mounting plate (704) is installed on the inner wall of the mounting base (702) just below the connecting groove (703).

3. A battery energy storage cabinet for preventing thermal runaway according to claim 2, characterized in that: A rotating rod (705) is rotatably connected to the opposite inner walls of the mounting plate (704), a mounting base plate (706) is rotatably connected to the outer wall of the rotating rod (705), a shield plate (707) is installed on the outer wall of the mounting base plate (706), and limit springs (708) are equidistantly arranged on the inner wall of the shield plate (707), and one end of the limit spring (708) is connected to the inner wall of the mounting base (702), wherein the shield plate (707) is located in the inner cavity of the connecting groove (703).

4. A battery energy storage cabinet for preventing thermal runaway according to claim 3, characterized in that: A limit plate (709) is provided on one side of the baffle (707) and at the end of the connecting groove (703), and the limit plate (709) has a limiting effect on the baffle (707); a temperature sensor (710) is provided on the inner wall of the mounting base (702); a pressure relief valve (711) is provided on the outer wall of the mounting base (702); an electric-controlled fire extinguisher (712) is installed on the outer wall of the mounting base (702) and at a position symmetrical to the pressure relief valve (711); and a step (713) is provided on the outer wall of the mounting base (702).

5. A battery energy storage cabinet for preventing thermal runaway according to claim 4, characterized in that: The thermal runaway prevention component (6) comprises an infrared temperature detector (601), a buzzer (602), an electromagnet (603) and a door panel (604); the infrared temperature detector (601) is installed on the inner wall of the inner shell (2) in sequence from top to bottom, and the infrared temperature detector (601) is located between the partitions (3); the buzzer (602) is installed on the inner wall of the inner shell (2) in sequence from top to bottom, and the buzzer (602) is located on one side of the infrared temperature detector (601).

6. A battery energy storage cabinet for preventing thermal runaway according to claim 5, characterized in that: The electromagnets (603) are provided in two groups at the ports of the inner shell (2), and the electromagnets (603) are symmetrically structured. The door panel (604) is mounted on the outer wall of the mounting bracket (1) via a hinge (605), and a magnetic adsorption block (606) is mounted on the inner wall of the door panel (604), wherein the magnetic adsorption block (606) and the electromagnets (603) are connected in a magnetic manner, and a heat insulation board (607) is arranged on one side of the magnetic adsorption block (606) and on the inner wall of the door panel (604).

7. A battery energy storage cabinet for preventing thermal runaway according to claim 6, characterized in that: A handle (8) is mounted on the outer wall of the door panel (604); the door panel (604) is provided with multiple groups and is respectively located at the ports of the inner shell (2); the handle (8) is provided with multiple groups and is respectively located on the outer wall of the door panel (604).

8. The thermal runaway-proof battery energy storage cabinet according to claim 5, characterized in that: The controller (5) is respectively connected to a temperature sensor (710), an electric-controlled fire extinguisher (712), an infrared temperature measuring detector (601), a buzzer (602) and an electromagnet (603) via wires, and the connection method is electrical connection. The materials of the partition (3), the heat insulation board (607) and the door panel (604) are all high-temperature resistant heat-insulating materials. The materials of the anti-sliding block (408), the limit block (413) and the baffle (415) are all plastic materials. The compression spring (414) is a compressed spring, and the cross-section of the baffle (415) is a concave structure.

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