Fire prevention and control suppression device for battery energy storage

Abstract

The utility model discloses a fire prevention and control suppression device for battery energy storage, and relates to the technical field of fire prevention and control, the fire prevention and control suppression device for battery energy storage comprises a battery box and a box cover fixedly installed on the top of the battery box through screws, and the inner top wall of the box cover is provided with a ventilation valve extending to the upper surface of the box cover. And the fire extinguishing assembly is used for performing fire extinguishing prevention and control when a fire occurs in the battery box, and the fire extinguishing assembly comprises a net-shaped mounting box fixedly arranged on the inner top wall of the box cover. According to the fire extinguishing device disclosed by the utility model, through the fire extinguishing assembly, when a battery in the battery box is in a fire disaster, the device can melt the hot melting air bag, so that a flame-retardant capsule in the hot melting air bag penetrates through the net-shaped mounting box under the action of gravity to fall into the battery box, and a flame retardant in a capsule shell is quickly exposed for fire extinguishing treatment; and therefore, the purpose of quickly preventing and extinguishing fire when a fire occurs in the battery box is achieved, and the safety is ensured.

Description

Technical Field

[0001] This utility model relates to the field of fire prevention and control technology, specifically a fire prevention and suppression device for battery energy storage. Background Technology

[0002] Battery energy storage is a technology that converts electrical energy into chemical energy (such as lithium-ion batteries) or physical energy (such as sodium-sulfur batteries) for storage, and then releases the electrical energy through reverse conversion. Its core is to achieve the charging and discharging cycle of energy through the electrodes, electrolytes and other components inside the battery.

[0003] In the actual assembly process, lithium-ion batteries used in new energy vehicles are directly installed inside the battery box. However, lithium-ion batteries are prone to overheating due to rapid discharge, overcharging, short circuits, etc. Prolonged overheating can cause battery spontaneous combustion and fire, resulting in safety issues and making it difficult to prevent and suppress fires.

[0004] Based on this, a fire prevention and suppression device for battery energy storage is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this invention is to provide a fire prevention and suppression device for battery energy storage, so as to solve the problem of inconvenience in fire prevention and suppression in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A fire prevention and suppression device for battery energy storage includes:

[0008] The battery box and the cover fixed to the top of the battery box by screws, and the inner top wall of the cover is provided with a vent valve extending to the upper surface of the cover.

[0009] A fire extinguishing assembly for fire prevention and control in the event of a fire inside a battery box. The fire extinguishing assembly includes a mesh mounting box fixed to the top wall inside the box cover. The mesh mounting box contains several heat-melting airbags, and the heat-melting airbags are filled with flame-retardant capsules.

[0010] A puncture assembly for puncturing thermoplastic airbags in the event of a fire inside the battery compartment. The puncture assembly includes a strip groove formed in the inner top wall of the compartment cover and a sliding plate slidably disposed in the inner top wall of the compartment cover. Puncture needles corresponding to a plurality of thermoplastic airbags are fixed at equal intervals on the side of the sliding plate. The side of the mesh mounting box has perforations for the puncture needles to pass through. The puncture assembly also includes a motor fixed in the inner wall of the strip groove, and the motor is externally wrapped with a ceramic fiber heat insulation layer.

[0011] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0012] In one alternative: a rectangular groove is formed on the upper surface of the box cover, and a rectangular opening corresponding to the mesh mounting box is formed on the inner bottom wall of the rectangular groove, and a sealing cover plate is hinged to the inner wall of the rectangular opening.

[0013] In one alternative: a handle is fixedly provided on the upper surface of the sealing cover, and the upper surface of the end of the sealing cover is fixedly connected to the inner bottom wall of the rectangular groove by a snap fastener.

[0014] In one alternative: the output end of the motor is keyed with a threaded post, and the end of the threaded post away from the motor is rotatably connected to the inner bottom wall of the slot.

[0015] In one alternative: a slider is slidably disposed on the inner wall of the strip groove, and the bottom end of the slider is fixedly connected to the upper surface of the sliding plate. A threaded hole is provided on the side of the slider to be threadedly connected to the outer surface of the threaded column.

[0016] In one alternative: a smoke sensor is fixed to the lower surface of the sliding plate, and a small PLC controller is fixed to the upper surface of the box cover. The smoke sensor and the motor are both electrically connected to the small PLC controller via wires.

[0017] In one alternative: the flame-retardant capsule is made by forming a capsule shell from polymeric plastic fibers and then filling the capsule shell with triphenyl phosphate flame retardant.

[0018] In one alternative: the heat-fusible airbag is made of polyethylene film with a melting point of 80-120°C.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] This fire prevention and suppression device for battery energy storage incorporates a fire extinguishing component. When a fire occurs inside the battery compartment, the device melts a thermoplastic gasbag, causing a flame-retardant capsule within the gasbag to fall through a mesh mounting box under gravity into the battery compartment. The capsule shell melts rapidly upon contact with high temperatures, quickly exposing the flame retardant inside for fire suppression. This achieves rapid fire prevention and extinguishing of fires inside the battery compartment, ensuring safety. Furthermore, a puncture component moves a puncture needle to the left when a fire occurs inside the battery compartment, puncturing the thermoplastic gasbag and causing it to explode. This facilitates the rapid and active release of the flame-retardant capsule for fire extinguishing, making the device highly practical. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic cross-sectional view of the present invention.

[0023] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0024] Figure 4 This is a top-section structural diagram of the present invention.

[0025] Figure reference numerals: 1. Battery box; 2. Box cover; 3. Fire extinguishing assembly; 301. Mesh mounting box; 302. Heat-melting airbag; 303. Flame-retardant capsule; 304. Sealing cover; 4. Puncture assembly; 401. Sliding plate; 402. Puncture needle; 403. Perforation; 404. Motor; 405. Threaded post; 406. Slider; 407. Smoke sensor; 408. Miniature PLC controller; 5. Vent valve. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] First embodiment:

[0028] like Figures 1-4 As shown, a fire prevention and suppression device for battery energy storage includes:

[0029] The battery box 1 and the cover 2 fixedly installed on the top of the battery box 1 by screws, and the inner top wall of the cover 2 is provided with a vent valve 5 extending to the upper surface of the cover 2;

[0030] Fire extinguishing component 3 is used to extinguish and prevent fires when a fire occurs inside the battery box 1. The fire extinguishing component 3 includes a mesh mounting box 301 fixed to the top wall inside the box cover 2. The mesh mounting box 301 is provided with a plurality of heat-melting airbags 302, and the heat-melting airbags 302 are filled with flame-retardant capsules 303.

[0031] In this embodiment, by setting up the fire extinguishing component 3, when a fire occurs inside the battery box 1, as the internal temperature of the battery box 1 gradually rises, when the temperature reaches a certain level, it can melt the thermoplastic airbag 302. This allows the flame-retardant capsule 303 inside the thermoplastic airbag 302 to fall into the battery box 1 under the action of gravity through the mesh mounting box 301. When the capsule shell of the flame-retardant capsule 303 encounters high temperature, it can melt rapidly, thereby quickly exposing the flame retardant inside the capsule shell for fire extinguishing. This achieves the purpose of rapid fire prevention and extinguishing when a fire occurs inside the battery box 1, ensuring safety.

[0032] like Figure 1 and Figure 2 As shown, a rectangular groove is provided on the upper surface of the box cover 2, and a rectangular opening corresponding to the mesh mounting box 301 is provided on the inner bottom wall of the rectangular groove. A sealing cover plate 304 is hinged to the inner wall of the rectangular opening. By providing the sealing cover plate 304, it is convenient to place the heat-fusible airbag 302.

[0033] like Figure 3 As shown, a handle is fixedly provided on the upper surface of the sealing cover plate 304, and the upper surface of the end of the sealing cover plate 304 is fixedly connected to the inner bottom wall of the rectangular groove by a buckle. By providing a handle and a buckle, it is easy to open the sealing cover plate 304.

[0034] Second embodiment:

[0035] like Figures 1-4 As shown, based on Embodiment 1, but different from Embodiment 1, a fire prevention and suppression device for battery energy storage further includes a puncture component 4, which is used to puncture the thermoplastic airbags 302 when a fire occurs inside the battery box 1. The puncture component 4 includes a strip groove opened in the inner top wall of the box cover 2, and a sliding plate 401 slidably disposed in the inner top wall of the box cover 2. Puncture needles 402 corresponding to a plurality of thermoplastic airbags 302 are fixedly fixed at equal intervals on the side of the sliding plate 401. The side of the mesh mounting box 301 is provided with a through hole 403 for the puncture needles 402 to pass through. The puncture component 4 also includes a motor 404 fixed in the inner wall of the strip groove. The motor 404 is wrapped with a ceramic fiber heat insulation layer.

[0036] A smoke sensor 407 is fixedly mounted on the lower surface of the sliding plate 401, and a small PLC controller 408 is fixedly mounted on the upper surface of the box cover 2. The smoke sensor 407 and the motor 404 are both electrically connected to the small PLC controller 408 through wires.

[0037] In this embodiment, by setting the puncture component 4, when a fire occurs inside the battery box 1, the smoke sensor 407 can transmit a signal to the small PLC controller 408. The small PLC controller 408 automatically controls the motor 404 to rotate. The rotation of the motor 404 drives the threaded column 405 to rotate. The rotation of the threaded column 405 drives the slider 406 to move. The movement of the slider 406 drives the sliding plate 401 to move, thereby driving the puncture needle 402 to move to the left and puncture the thermoplastic airbag 302 through the perforation 403, causing the thermoplastic airbag 302 to explode. This facilitates the rapid and active release of the flame-retardant capsule 303 inside the thermoplastic airbag 302 for fire extinguishing. It is highly practical. The motor 404 is wrapped with a ceramic fiber heat insulation layer to prevent the motor 404 from failing due to high temperature.

[0038] like Figure 3 As shown, the output end of the motor 404 is keyed to a threaded post 405, and the end of the threaded post 405 away from the motor 404 is rotatably connected to the inner bottom wall of the strip groove. By setting the motor 404, the threaded post 405 can be automatically rotated by the rotation of the motor 404.

[0039] like Figure 3 As shown, a slider 406 is slidably disposed on the inner wall of the strip groove, and the bottom end of the slider 406 is fixedly connected to the upper surface of the sliding plate 401. A threaded hole is provided on the side of the slider 406 to be threadedly connected to the outer surface of the threaded post 405. By setting the slider 406, the slider 406 can be automatically moved by the rotation of the threaded post 405.

[0040] like Figure 1 and Figure 3 As shown, the flame-retardant capsule 303 is made of a capsule shell made of polymer plastic fiber, and then filled with triphenyl phosphate flame retardant. By using polymer plastic fiber to make the capsule shell, the capsule shell completely melts within 3-5 seconds when exposed to high temperature, and the triphenyl phosphate flame retardant quickly extinguishes the fire.

[0041] like Figure 2 As shown, the heat-fusible airbag 302 is made of polyethylene film with a melting point of 80-120℃.

[0042] The above embodiments disclose a fire prevention and suppression device for battery energy storage. When a fire occurs inside the battery box 1, as the internal temperature of the battery box 1 gradually rises, when the temperature reaches a certain level, it can melt the thermoplastic airbag 302. This allows the flame-retardant capsule 303 inside the thermoplastic airbag 302 to fall through the mesh mounting box 301 into the battery box 1 under the influence of gravity. When the capsule shell of the flame-retardant capsule 303 encounters high temperature, it can melt rapidly, thereby quickly exposing the flame retardant inside the capsule shell for fire extinguishing. This achieves the purpose of rapid fire prevention and extinguishing when a fire occurs inside the battery box 1, ensuring safety. Simultaneously, when a fire occurs inside the battery box 1... In the event of a fire, the smoke sensor 407 transmits a signal to the small PLC controller 408. The small PLC controller 408 automatically controls the motor 404 to rotate. The rotation of the motor 404 drives the threaded column 405 to rotate, which in turn drives the slider 406 to move. The movement of the slider 406 drives the sliding plate 401 to move, thereby causing the piercing needle 402 to move to the left and pierce through the perforation 403 to puncture the thermofusible airbag 302, causing the thermofusible airbag 302 to explode. This facilitates the rapid and active release of the flame-retardant capsule 303 inside the thermofusible airbag 302 for fire extinguishing. It is highly practical and can effectively ensure that the thermofusible airbag 302 can rupture and release quickly.

[0043] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A fire prevention and suppression device for battery energy storage, characterized in that, include: The battery box (1) and the cover (2) fixedly installed on the top of the battery box (1) by screws, and the inner top wall of the cover (2) is provided with a vent valve (5) extending to the upper surface of the cover (2); Fire extinguishing assembly (3) is used to extinguish and prevent fires when a fire occurs inside the battery box (1). The fire extinguishing assembly (3) includes a mesh mounting box (301) fixed to the top wall inside the box cover (2). The mesh mounting box (301) is provided with a number of heat-melting airbags (302), and the heat-melting airbags (302) are filled with flame-retardant capsules (303). The puncture assembly (4) is used to puncture the thermoplastic airbags (302) in the event of a fire inside the battery box (1). The puncture assembly (4) includes a strip groove opened in the inner top wall of the box cover (2) and a sliding plate (401) slidably disposed in the inner top wall of the box cover (2). Puncture needles (402) corresponding to a plurality of thermoplastic airbags (302) are fixedly fixed at equal intervals on the side of the sliding plate (401). The side of the mesh mounting box (301) is provided with a through hole (403) for the puncture needles (402) to pass through. The puncture assembly (4) also includes a motor (404) fixed in the inner wall of the strip groove. The motor (404) is wrapped with a ceramic fiber heat insulation layer.

2. The fire prevention and suppression device for battery energy storage according to claim 1, characterized in that: The upper surface of the box cover (2) is provided with a rectangular groove, and the inner bottom wall of the rectangular groove is provided with a rectangular opening corresponding to the mesh mounting box (301), and the inner wall of the rectangular opening is hinged with a sealing cover plate (304).

3. A fire prevention and suppression device for battery energy storage according to claim 2, characterized in that: The upper surface of the sealing cover (304) is fixedly provided with a handle, and the upper surface of the end of the sealing cover (304) is fixedly connected to the inner bottom wall of the rectangular groove by a buckle.

4. A fire prevention and suppression device for battery energy storage according to claim 1, characterized in that: The output end of the motor (404) is keyed with a threaded post (405), and the end of the threaded post (405) away from the motor (404) is rotatably connected to the inner bottom wall of the strip groove.

5. A fire prevention and suppression device for battery energy storage according to claim 4, characterized in that: The inner wall of the strip groove is slidably provided with a slider (406), and the bottom end of the slider (406) is fixedly connected to the upper surface of the sliding plate (401). The side of the slider (406) is provided with a threaded hole that is threadedly connected to the outer surface of the threaded column (405).

6. A fire prevention and suppression device for battery energy storage according to claim 1, characterized in that: A smoke sensor (407) is fixedly mounted on the lower surface of the sliding plate (401), and a small PLC controller (408) is fixedly mounted on the upper surface of the box cover (2). The smoke sensor (407) and the motor (404) are both electrically connected to the small PLC controller (408) through wires.

7. A fire prevention and suppression device for battery energy storage according to claim 1, characterized in that: The flame-retardant capsule (303) is made by forming a capsule shell from high-molecular polymer plastic fibers and then filling the capsule shell with triphenyl phosphate flame retardant.

8. A fire prevention and suppression device for battery energy storage according to claim 1, characterized in that: The heat-fusible airbag (302) is made of polyethylene film with a melting point of 80-120℃.

Images