Fire extinguishing device for automotive battery pack

Abstract

The utility model provides a kind of fire extinguishing device for automobile battery pack, it is related to fire control field, and the scheme used is: including lifting assembly, the lifting assembly is provided with puncture head, the puncture head is provided with liquid outlet, the liquid outlet can be communicated with the tank body that has stored fire extinguishing medium, further including conveying seat, the height of the conveying seat is lower than the height when the puncture head is not stretched out, the conveying seat is provided with cavity, the lifting assembly is arranged in the cavity of the conveying seat, the conveying seat is detachably provided with push rod, the conveying seat enters the bottom of car by the push effect of push rod.The utility model effectively reduces the height of puncture head, adapts multiple vehicle models, and can make puncture head have enough acceleration stroke.

Description

Technical Field

[0001] This utility model relates to the field of fire protection, and in particular to a fire extinguishing device for automobile battery packs. Background Technology

[0002] New energy vehicles are vehicles that primarily use electricity as their power source, mainly including battery electric vehicles (BEVs), plug-in hybrid electric vehicles (PHEVs), and fuel cell electric vehicles (FCEVs), with battery electric vehicles accounting for the largest share. Their core power systems consist of battery packs (mostly lithium-ion batteries, such as ternary lithium batteries and lithium iron phosphate batteries), drive motors, and electronic control systems. Fires involving new energy vehicles are far more difficult to extinguish than those involving traditional gasoline-powered vehicles.

[0003] In the prior art, Chinese utility model patent CN 221286703 U discloses a portable fire extinguishing device for an electric vehicle battery pack. The device includes a mobile trolley body and a control terminal for controlling the trolley body. The mobile trolley body is equipped with a potassium-penetrating nozzle assembly, which includes a drive mechanism, a bracket, and a potassium-penetrating nozzle. The drive mechanism is mounted on the mobile trolley body, and the bracket is mounted on the drive mechanism. The drive mechanism drives the bracket to rise or fall, and the potassium-penetrating nozzle is fixedly mounted on the bracket. The mobile trolley body is equipped with a water inlet connector, which is connected to the potassium-penetrating nozzle via a pipe. The drive mechanism is wirelessly connected to the control terminal. This solution enables fire extinguishing of electric vehicle battery packs, making firefighters safer and reducing risks.

[0004] However, when adopting the above measures, the potassium-penetrating nozzle assembly is located on the mobile trolley body, which includes the vehicle body and wheels. This component increases the height of the fire extinguishing device. On the one hand, this limits the use of the fire extinguishing device, requiring it to match the height of the corresponding vehicle chassis. Otherwise, it cannot directly enter under the vehicle and requires the use of auxiliary tools to lift the chassis. On the other hand, the increased height makes the distance between the nozzle assembly and the chassis closer, resulting in a shorter acceleration stroke for the nozzle assembly. This prevents the nozzle assembly from obtaining a large acceleration or kinetic energy during penetration, affecting the penetration success rate. Utility Model Content

[0005] To address the technical problem of excessive height of the fire extinguishing device inside the electric vehicle battery pack in the prior art, this utility model provides a fire extinguishing device for automotive battery packs that effectively reduces the height of the puncture head, is compatible with various vehicle models, and allows the puncture head to have sufficient acceleration stroke.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a fire extinguishing device for automobile battery packs, including a lifting assembly, a puncture head provided on the lifting assembly, a liquid outlet provided on the puncture head, the liquid outlet being able to communicate with a tank storing fire extinguishing medium, and a delivery seat, the height of the delivery seat being lower than the height of the puncture head when it is not extended, the bottom surface of the delivery seat being able to contact the ground to generate sliding friction, the delivery seat being provided with a cavity, the lifting assembly being disposed in the cavity of the delivery seat, and a push rod being detachably provided on the delivery seat, the delivery seat entering the underside of the vehicle by the pushing action of the push rod.

[0007] This invention reduces the height of the puncture head by setting a conveyor seat with a cavity and having the conveyor seat in direct contact with the ground. On the one hand, this ensures that the device can be used with vehicles with low chassis. On the other hand, it increases the distance between the puncture head and the chassis, allowing for sufficient acceleration stroke to store energy and improve the puncture success rate. At the same time, the push rod can be disassembled and installed to avoid the risk of the push rod tripping firefighters.

[0008] Furthermore, the conveying seat includes a base plate, the bottom surface of which can contact the ground to generate sliding friction. A fence is provided on the end face of the base plate, the height of which is lower than the height of the puncture head when it is not extended. The lifting assembly is provided on the base plate. A magnetic block is provided on the outer surface of the fence. A suction cup electromagnet is provided at the end of the push rod. The suction cup electromagnet can attract the magnetic block. The suction cup electromagnet is connected to a power source through a switch. The power source is located inside the cavity of the push rod. The switch is located on the push rod.

[0009] The combination of the magnetic block and the suction cup electromagnet in this invention enables reliable installation and quick disassembly of the push rod, improving the ease of use and efficiency of the device.

[0010] Furthermore, a threaded sleeve is provided at the end of the push rod away from the suction cup electromagnet, and an extension rod is screwed onto the threaded sleeve.

[0011] This invention enhances the effective length of the push rod by adding an extension rod, thereby increasing the working range of the push rod and enabling it to push the conveyor seat from multiple positions, thus increasing its flexibility of use.

[0012] Furthermore, a limiting seat is provided on the fence, the magnetic block is disposed in the limiting seat, and the push rod can extend into the limiting seat.

[0013] This invention improves connection reliability by setting a limiting seat to prevent the push rod from detaching from the fence when subjected to oblique force.

[0014] Furthermore, the fence is provided with hand-held holes.

[0015] This invention facilitates the handling of the device by providing a handheld hole.

[0016] Furthermore, the fence is also equipped with weight-reducing holes.

[0017] Furthermore, the lifting assembly includes a protective shell, which is vertically mounted on the base plate. A maintenance hole is provided at a corresponding position on the base plate, opposite to the protective shell. An end cap is detachably mounted on the maintenance hole. A clearance hole is provided at the top of the protective shell. A lifting cylinder is housed inside the protective shell and is connected to a two-position five-way solenoid valve. The solenoid valve is located inside the protective shell and is connected to an air source. When the lifting cylinder is in the non-extended state, the piston rod end of the lifting cylinder can extend through the clearance hole. A mounting seat is provided at the piston rod end of the lifting cylinder. A liquid inlet hole is provided through the piercing head and the mounting seat. The liquid inlet hole is connected to a telescopic tube, which is connected to a liquid inlet pipe.

[0018] This invention protects the lifting cylinder, solenoid valve, liquid inlet pipe, and air inlet pipe by providing a protective shell.

[0019] Furthermore, the intake pipe extends through the interior of the base plate, and a pressure detection module and a throttle valve are installed on the intake pipe.

[0020] This invention, by incorporating a pressure detection module, can determine whether the puncture has been completed by detecting changes in pressure within the air intake tube, facilitating further operations of the device.

[0021] Furthermore, the inlet pipe extends through the protective shell and out from inside the bottom plate, and a flow regulating valve is provided on the inlet pipe, which can communicate with the tank body.

[0022] This invention allows for flow rate adjustment by incorporating a flow regulating valve, thus adapting to the fire situation.

[0023] Furthermore, the fence is made of high-temperature alloy material, and the base plate is made of inorganic heat insulation board.

[0024] As can be seen from the above technical solutions, this utility model has the following advantages: This invention provides a fire extinguishing device for automotive battery packs. By incorporating a cavity-shaped delivery seat that directly contacts the ground, the height of the puncture head is reduced. This ensures compatibility with vehicles with low chassis and allows for a greater distance between the puncture head and the chassis, providing sufficient acceleration for energy storage and improving puncture success rate. Furthermore, the detachable and removable push rod eliminates the risk of tripping firefighters. The combination of a magnetic block and a suction cup electromagnet enables reliable installation and quick removal of the push rod, enhancing the device's ease of use and efficiency. The addition of an extension rod further strengthens the pushing force. The effective length of the rod increases the working range of the push rod, allowing it to push the delivery seat from multiple positions, thus increasing its flexibility. The addition of an extension rod further enhances the effective length of the push rod, increasing its working range and enabling it to push the delivery seat from multiple positions, further increasing its flexibility. A handheld port facilitates the handling of the device. A protective shell protects the lifting cylinder, solenoid valve, liquid inlet pipe, and air inlet pipe. A pressure detection module detects pressure changes in the air inlet pipe to determine if puncture is complete, facilitating further operation. A flow regulating valve adjusts the flow rate to suit the fire situation. Attached Figure Description

[0025] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0027] Figure 2 This is a schematic diagram of the assembly structure of the puncture head, lifting assembly and conveying seat in a specific embodiment of this utility model.

[0028] Figure 3 This is a schematic diagram of the push rod in a specific embodiment of the present invention.

[0029] Figure 4 This is a schematic diagram of the assembly structure of the puncture head and the lifting assembly in a specific embodiment of this utility model.

[0030] In the diagram, 1. Growth rod; 2. Screw sleeve; 3. Push rod; 4. Limit seat; 5. Liquid inlet pipe; 6. Air inlet pipe; 7. Handheld hole; 8. Fence; 9. Base plate; 10. Conveyor seat; 11. Puncture head; 12. Protective shell; 13. Mounting seat; 14. Weight reduction hole; 15. Lifting assembly; 16. Maintenance hole; 17. Cable routing hole; 18. Liquid outlet hole; 19. Telescopic tube; 20. Lifting cylinder; 21. End cap; 22. Liquid inlet hole; 23. Magnetic block. Detailed Implementation

[0031] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0032] like Figure 1 As shown in the figure, this specific embodiment provides a fire extinguishing device for an automobile battery pack, including a lifting assembly 15, a puncture head 11, a delivery seat 10, and a push rod 3. The lifting assembly 15 is provided with a puncture head 11, which has a conical structure and a liquid outlet 18. The liquid outlet 18 can communicate with a tank storing fire extinguishing medium. The height of the delivery seat 10 is lower than the height of the puncture head 11 when it is not extended. The bottom surface of the delivery seat 10 can contact the ground to generate sliding friction. The delivery seat 10 is provided with a cavity, and the lifting assembly 15 is disposed in the cavity of the delivery seat 10. The push rod 3 is detachably provided on the delivery seat 10. The delivery seat 10 enters the undercarriage of the vehicle through the pushing action of the push rod 3. In use, the delivery seat 10 can be manually pushed to the position of the battery pack on the chassis.

[0033] This specific embodiment sets up a delivery seat 10 with a cavity and the delivery seat 10 is in direct contact with the ground, so that the height of the puncture head 11 is only the sum of the bottom height of the delivery seat 10, the height of the lifting component 15 and the height of the puncture head 11. Compared with the prior art, which uses a mobile vehicle with wheels to carry the puncture head 11, the height of the puncture head 11 can be effectively reduced. On the one hand, this can ensure that the device can be used with cars with low chassis. On the other hand, it makes the vertical distance between the puncture head 11 and the chassis greater, so that it can have sufficient acceleration stroke to store energy and improve the puncture success rate. At the same time, the push rod 3 can be disassembled and installed to avoid the risk of the push rod 3 tripping firefighters.

[0034] like Figure 1 and Figure 2As shown, in this specific embodiment, the conveyor seat 10 can adopt the following specific structure: the conveyor seat 10 includes a base plate 9, the bottom surface of the base plate 9 can contact the ground to generate sliding friction, a fence 8 is provided on the end face of the base plate 9, the height of the fence 8 is lower than the height of the piercing head 11 when it is not extended, and the lifting component 15 is provided on the base plate 9; furthermore, in order to facilitate handling, the fence 8 is provided with two opposing hand-held holes 7, and in order to achieve weight reduction, the fence 8 is provided with weight-reducing holes 14; in this specific embodiment, the fence 8 is made of high-temperature alloy, and the base plate 9 is made of inorganic heat insulation board.

[0035] To achieve efficient assembly and disassembly of push rod 3, such as Figure 1 and Figure 3 As shown, in this specific embodiment, a magnetic block 23 is provided on the outer surface of the fence 8, and a suction cup electromagnet 24 is provided at the end of the push rod 3. The suction cup electromagnet 24 can attract the magnetic block 23 to achieve installation connection. The suction cup electromagnet 24 is connected to a power source through a switch 25. The power source is located inside the cavity of the push rod 3, and the switch 25 is located on the push rod 3. Specifically, a cavity is provided inside the push rod 3, and a power source is provided inside the cavity. The power source is a storage battery. The storage battery is connected to the suction cup electromagnet 24 and the switch 25 through wires. The suction cup electromagnet 24 is interference-fitted with the mounting hole at the end of the push rod 3. The mounting hole communicates with the cavity to allow wiring. The switch 25 is located on the outer circumferential surface of the push rod 3. To increase the working range of the push rod 3... In this specific embodiment, a threaded sleeve 2 is provided at the end of the push rod 3 away from the suction cup electromagnet 24. An extension rod 1 is screwed onto the threaded sleeve 2. By providing the extension rod 1, the effective length of the push rod 3 can be increased, the working range of the push rod 3 can be increased, and the push rod 3 can push the conveyor seat 10 from multiple positions, increasing the flexibility of use. In actual use, due to the limitation of the working space, it cannot be guaranteed that the force exerted on the push rod 3 by the hand is always along its axial direction. When the force deviates from the axial direction, it may cause the push rod 3 to become loose from the magnetic block 23. To avoid this situation, a limiting seat 4 is provided on the fence 8. The limiting seat 4 has a U-shaped structure, and the magnetic block 23 is placed in the limiting seat 4. The push rod 3 can extend into the limiting seat 4.

[0036] like Figure 1 , Figure 2 and Figure 4As shown, in this specific embodiment, the lifting assembly 15 can adopt the following specific structure: the lifting assembly 15 includes a protective shell 12, which is vertically mounted on the base plate 9 via a lower flange and bolts. A clearance hole is provided at the top of the protective shell 12. A lifting cylinder 20 is disposed inside the protective shell 12. The lifting cylinder 20 is connected to a two-position five-way solenoid valve, which is located inside the protective shell 12 and connected to an air source. When the lifting cylinder 20 is in the non-extended state, the piston rod end of the lifting cylinder 20 can extend out through the clearance hole. A mounting base 13 is detachably mounted on the piston rod end of the lifting cylinder 20 via bolts. A liquid inlet hole 22 is provided through the piercing head 11 and the mounting base 13, and the liquid inlet hole 22 extends to the outer circumference of the mounting base 13 in an L-shaped structure. On the surface, the liquid inlet 22 is connected to a telescopic tube 19 via a pipe connector. The telescopic tube 19 is made of high-temperature alloy. The telescopic tube 19 is installed on the protective shell 12 via another pipe connector. The protective shell 12 is provided with a transition hole. The telescopic tube 19 is connected to the liquid inlet pipe 5 through the transition hole. For easy maintenance, a maintenance hole 16 is provided at a corresponding position on the base plate 9. The maintenance hole 16 is positioned opposite to the protective shell 12. An end cap 21 is detachably installed on the maintenance hole 16 by bolts. The lifting cylinder 20 can be removed from the maintenance hole 16. In this specific embodiment, the protective shell 12 is made of ceramic matrix composite material, which can effectively insulate heat and also has good strength. To further protect the pipeline, a wiring hole 17 is provided on the base plate 9. The air inlet pipe 6 and the liquid delivery pipe extend out through the wiring hole 17 inside the base plate 9.

[0037] To enable accurate control of this device, in this specific embodiment, the air inlet pipe 6 is equipped with a pressure detection module and a throttle valve. The pressure detection module uses a pressure sensor, and the liquid inlet pipe 5 is equipped with a flow regulating valve that can be connected to the tank. It also includes a controller, and the solenoid valve and pressure sensor are electrically connected to the controller. When the pressure in the air inlet pipe 6 suddenly increases, it means that the puncture head 11 is puncturing. When the pressure suddenly increases and then returns to the normal range, it means that the puncture is successful and the next operation can be carried out. When the pressure remains high, it means that the puncture is difficult and the throttle valve can be adjusted to increase the gas flow.

[0038] In this specific embodiment, the extinguishing medium is a water-based extinguishing agent, the tank is connected to a water pump, and the water pump is connected to an infusion pipe.

[0039] The working process of this fire extinguishing device for automotive battery packs is as follows: Connect the push rod 3 to the base with an adhesive attachment, then forcefully push the delivery seat 10 to the battery pack position. Once it reaches the positioning hole, the lifting cylinder 20 extends to puncture. After successful puncture, the water pump operates to deliver the extinguishing medium. The extinguishing medium enters the puncture head 11 through the infusion tube to extinguish the fire inside the battery pack. If it is found that the car chassis or battery pack position cannot be directly pushed, use a jack with a handle to lift the car, and then move the device to the underside of the car using the push rod 3 for operation.

[0040] As can be seen from the above specific embodiments, this utility model has the following beneficial effects: 1. By setting a delivery seat 10 with a cavity and having the delivery seat 10 in direct contact with the ground, the height of the puncture head 11 can be reduced. On the one hand, this ensures that the device can be used with vehicles with low chassis. On the other hand, it makes the distance between the puncture head 11 and the chassis greater, allowing for sufficient acceleration stroke to store energy and improve the puncture success rate. At the same time, the push rod 3 can be disassembled and installed to avoid the risk of the push rod 3 tripping firefighters. 2. The cooperation between the magnetic block 23 and the suction cup electromagnet 24 enables reliable installation and quick disassembly of the push rod 3, improving the ease of use and efficiency of this device; 3. By setting the extension rod 1, the effective length of the push rod 3 can be increased, the working range of the push rod 3 can be expanded, and the push rod 3 can push the conveyor seat 10 from multiple positions, increasing the flexibility of use; 4. By setting the extension rod 1, the effective length of the push rod 3 can be increased, the working range of the push rod 3 can be increased, and the push rod 3 can push the conveyor seat 10 from multiple positions, increasing the flexibility of use; 5. The hand-held port 7 facilitates the handling of this device; the protective shell 12 protects the lifting cylinder 20, solenoid valve, liquid inlet pipe 5, and air inlet pipe 6. 6. By setting up a pressure detection module, the device can detect changes in pressure in the air inlet pipe 6 to determine whether the puncture is complete, which facilitates the next step of the operation. 7. The flow rate can be adjusted by setting a flow regulating valve to adapt to the fire situation.

[0041] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fire extinguishing device for an automotive battery pack, comprising a lifting assembly (15), wherein the lifting assembly (15) is provided with a piercing head (11), the piercing head (11) is provided with a liquid outlet (18), the liquid outlet (18) being capable of communicating with a tank storing a fire extinguishing medium, characterized in that, It also includes a conveyor seat (10), the height of which is lower than the height of the puncture head (11) when it is not extended. The bottom surface of the conveyor seat (10) can contact the ground to generate sliding friction. The conveyor seat (10) is provided with a cavity. The lifting assembly (15) is disposed in the cavity of the conveyor seat (10). A push rod (3) is detachably provided on the conveyor seat (10). The conveyor seat (10) enters the vehicle bottom through the pushing action of the push rod (3).

2. The fire extinguishing device for an automotive battery pack as described in claim 1, characterized in that, The conveying seat (10) includes a base plate (9), the bottom surface of which can contact the ground to generate sliding friction. A fence (8) is provided on the end face of the base plate (9), the height of which is lower than the height of the piercing head (11) when it is not extended. The lifting assembly (15) is provided on the base plate (9). A magnetic block (23) is provided on the outer surface of the fence (8). A suction cup electromagnet (24) is provided at the end of the push rod (3). The suction cup electromagnet (24) can attract the magnetic block (23). The suction cup electromagnet (24) is connected to a power source through a switch (25). The power source is located in the cavity of the push rod (3). The switch (25) is located on the push rod (3).

3. The fire extinguishing device for an automotive battery pack as described in claim 2, characterized in that, The end of the push rod (3) away from the suction cup electromagnet (24) is provided with a screw sleeve (2), and the screw sleeve (2) is screwed with an extension rod (1).

4. The fire extinguishing device for an automotive battery pack as described in claim 2, characterized in that, The fence (8) is provided with a limiting seat (4), the magnetic block (23) is disposed in the limiting seat (4), and the push rod (3) can extend into the limiting seat (4).

5. The fire extinguishing device for an automotive battery pack as described in any one of claims 2-4, characterized in that, The fence (8) is provided with hand-held holes (7).

6. The fire extinguishing device for an automotive battery pack as described in claim 5, characterized in that, The fence (8) is also provided with weight-reducing holes (14).

7. The fire extinguishing device for an automotive battery pack as described in claim 2, characterized in that, The lifting assembly (15) includes a protective shell (12), which is vertically mounted on the base plate (9). A maintenance hole (16) is provided at a corresponding position on the base plate (9). The maintenance hole (16) is positioned opposite to the protective shell (12). An end cap (21) is detachably mounted on the maintenance hole (16). A clearance hole is provided at the top of the protective shell (12). A lifting cylinder (20) is installed inside the protective shell (12). The lifting cylinder (20) is connected to a two-position five-way solenoid valve. The solenoid valve is located within the protective shell (12). Inside the cylinder, the solenoid valve is connected to the air source through the air inlet pipe (6). When the lifting cylinder (20) is in the non-extended state, the piston rod end of the lifting cylinder (20) can extend out from the clearance hole. The piston rod end of the lifting cylinder (20) is provided with a mounting seat (13). The mounting seat (13) is provided with the piercing head (11). The piercing head (11) and the mounting seat (13) are provided with a liquid inlet hole (22). The liquid inlet hole (22) is connected to a telescopic pipe (19). The telescopic pipe (19) is connected to a liquid inlet pipe (5).

8. The fire extinguishing device for an automotive battery pack as described in claim 7, characterized in that, The intake pipe (6) extends through the interior of the base plate (9), and a pressure detection module and a throttle valve are provided on the intake pipe (6).

9. The fire extinguishing device for an automotive battery pack as described in claim 8, characterized in that, The inlet pipe (5) passes through the protective shell (12) and extends out from the inside of the bottom plate (9). A flow regulating valve is provided on the inlet pipe (5), and the flow regulating valve can communicate with the tank body.

10. The fire extinguishing device for an automotive battery pack as described in claim 9, characterized in that, The fence (8) is made of high-temperature alloy material, and the base plate (9) is made of inorganic heat insulation board.

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