A power lithium battery fire extinguishing agent spraying device

Abstract

This utility model relates to the field of power lithium battery technology and discloses a power lithium battery fire extinguishing agent spraying device, including a battery container. Inside the battery container are two fire extinguishers containing fire extinguishing agent and driving nitrogen gas. A transmission pipe is fixedly connected to the bottom of each fire extinguisher. This utility model uses a reciprocating mechanism that can be activated by a motor. The motor drives an elliptical block to rotate. When the elliptical block rotates and contacts the compression plates, the two compression plates are compressed and move towards the side closer to the spring. When the elliptical block rotates to a point where it is no longer in contact with the compression plates, the elastic force generated by the spring pushes the compression plates away from the spring, causing the compression plates to reciprocate. This cycle repeats, and the fire extinguishers and other structures also reciprocate synchronously with the compression plates, evenly spraying the fire extinguisher inside the battery container, thus improving the fire extinguishing effect.

Description

Technical Field

[0001] This utility model relates to the field of power lithium battery technology, specifically to a power lithium battery fire extinguishing agent spraying device. Background Technology

[0002] Lithium-ion batteries, also known as power lithium batteries, are high-performance, rechargeable secondary batteries. Compared with traditional lead-acid and nickel-cadmium batteries, lithium-ion batteries have many advantages such as high energy density, light weight, small size, low self-discharge, and no memory effect, making them an ideal power source for electric vehicles, electric bicycles, and other electric drive tools.

[0003] A search revealed a Chinese patent document disclosing a fire extinguishing agent spraying device for power lithium batteries [Announcement No.: CN215741539U]. This device includes a battery container, a battery pack, a water tank, a main water pipe, a booster pump, branch water pipes, a sensing spray device, and a controller. The battery pack is located inside the battery container, the water tank is located on one side of the battery container, the main water pipe is connected to the water tank and located at the top of the battery container, the booster pump is located on the main water pipe, the branch water pipe is located on the main water pipe and above the battery pack, the sensing spray device is connected to the branch water pipe, and the controller is located on the side wall of the battery container. This utility model belongs to the field of battery manufacturing technology, specifically referring to a fire extinguishing agent spraying device for power lithium batteries that rapidly senses the ignition point and quickly extinguishes and cools the fire.

[0004] When transporting power lithium batteries, multiple power lithium batteries are usually placed inside a battery container. To prevent fires caused by spontaneous combustion of the power lithium batteries, fire extinguishers are installed inside the container. When a fire occurs, the extinguishing agent in the fire extinguisher will be sprayed out to extinguish the fire. However, most existing fire extinguishers are fixed in a designated location. When the fire extinguisher is activated, the extinguishing agent can only be sprayed in one location and cannot be evenly sprayed inside the battery container, which will affect the fire extinguishing effect. Utility Model Content

[0005] The purpose of this invention is to provide a power lithium battery fire extinguishing agent spraying device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a power lithium battery fire extinguishing agent spraying device, comprising a battery container, wherein the battery container is provided with two fire extinguishers storing fire extinguishing agent and driving nitrogen gas, the bottom of the fire extinguishers is fixedly connected to a transmission pipe, the surface of the transmission pipe is fixedly installed with a solenoid valve, the bottom of the transmission pipe is fixedly connected to a dispersion pipe, the bottom of the dispersion pipe is fixedly connected to a plurality of nozzles, a controller is fixedly installed on one side of the battery container, a smoke sensor is fixedly installed inside the battery container, and a reciprocating mechanism is provided on the top of the battery container;

[0007] A pressurizing mechanism is fixedly installed inside the battery container. When the reciprocating mechanism drives the fire extinguisher to move back and forth, the pressurizing mechanism injects compressed gas into the fire extinguisher.

[0008] Preferably, the reciprocating mechanism includes a motor fixedly installed on the top of the battery container, the output end of the motor extending into the interior of the battery container and fixedly connected to an elliptical block, a compression plate that cooperates with the elliptical block being fixedly connected to the top of the fire extinguisher, springs being fixedly connected to the two compression plates on opposite sides, a support block being fixedly connected to one end of the spring, and the top of the support block being fixedly connected to the inner wall of the battery container.

[0009] Preferably, the pressurization mechanism includes two pressurization boxes symmetrically and fixedly connected to the inner wall of the battery container. An air inlet pipe is fixedly connected to one side of each pressurization box, and an exhaust hose is fixedly connected to the bottom of each pressurization box. One end of the exhaust hose is fixedly connected to one side of a fire extinguisher. Push rods are fixedly connected to the sides of the two extrusion plates that are far apart from each other. One end of each push rod extends into the interior of the pressurization box and is fixedly connected to a push block.

[0010] Preferably, a one-way valve is fixedly installed on the surface of the intake pipe, and a one-way pressure valve is fixedly installed on the surface of the exhaust hose.

[0011] Preferably, a piston plate is fixedly connected to one side of the push block, and the outer surface of the piston plate is in contact with the inner wall of the booster box.

[0012] Preferably, sliding blocks are fixedly connected to both sides of the extrusion plate, and the inner wall of the battery container is provided with sliding grooves that cooperate with the sliding blocks.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model, by setting a reciprocating mechanism, can be rotated by starting a motor. The motor will drive the elliptical block to rotate. When the elliptical block rotates and contacts the extrusion plate, the two extrusion plates will move towards the side closer to the spring due to the extrusion effect. When the elliptical block rotates to the point where it is no longer in contact with the extrusion plate, the elastic force generated by the spring will push the extrusion plate to the side away from the spring, so that the extrusion plate moves back and forth. This cycle is repeated. The fire extinguisher and other structures will also move back and forth synchronously with the extrusion plate, so that the fire extinguisher sprays evenly inside the battery container, improving the fire extinguishing effect.

[0015] 2. This utility model, by setting up a pressurization mechanism, enables the push rod, push block, and piston plate to move simultaneously when the extrusion plate is compressed and moves closer to the spring. The piston plate compresses the gas in the pressurization chamber. When the gas pressure reaches the limit of the one-way pressure valve, the gas enters the fire extinguisher through the exhaust hose. When the extrusion plate moves away from the spring, the push rod, push block, and piston plate also move synchronously. At this time, the pressurization chamber is under negative pressure, and the gas enters the pressurization chamber through the air inlet pipe. This cycle is repeated to intermittently inject compressed gas into the fire extinguisher. With the assistance of the compressed gas, the rate of extinguishing agent spraying is increased, thereby improving the fire extinguishing effect. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a perspective view of the present invention in cross-section;

[0018] Figure 3 This is a top-section schematic diagram of the present invention;

[0019] Figure 4 This is a perspective view of a partial structure of the reciprocating mechanism and the booster mechanism of this utility model;

[0020] Figure 5 This is a perspective view of the fire extinguisher of this utility model from below.

[0021] Figure 6 This is a perspective view of the pressure chamber of this utility model.

[0022] In the diagram: 1. Battery container; 2. Fire extinguisher; 3. Transmission pipe; 4. Solenoid valve; 5. Dispersion pipe; 6. Nozzle; 7. Controller; 8. Smoke sensor; 9. Motor; 10. Elliptical block; 11. Extrusion plate; 12. Spring; 13. Support block; 14. Pressure chamber; 15. Inlet pipe; 16. Exhaust hose; 17. Push rod; 18. Push block; 19. One-way valve; 20. One-way pressure valve; 21. Piston plate; 22. Sliding block; 23. Sliding groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 - Figure 6 As shown,

[0025] Example 1:

[0026] A power lithium battery fire extinguishing agent spraying device includes a battery container 1. Inside the battery container 1 are two fire extinguishers 2, which store the fire extinguishing agent and drive nitrogen. The bottom of the fire extinguishers 2 is fixedly connected to a transmission pipe 3. A solenoid valve 4 is fixedly installed on the surface of the transmission pipe 3. The bottom of the transmission pipe 3 is fixedly connected to a dispersion pipe 5. The bottom of the dispersion pipe 5 is fixedly connected to a plurality of nozzles 6. A controller 7 is fixedly installed on one side of the battery container 1. A smoke sensor 8 is fixedly installed inside the battery container 1. A reciprocating mechanism is provided on the top of the battery container 1.

[0027] The pressurization mechanism is fixedly installed inside the battery container 1. When the reciprocating mechanism drives the fire extinguisher 2 to move back and forth, the pressurization mechanism will inject compressed gas into the fire extinguisher 2.

[0028] The reciprocating mechanism includes a motor 9 fixedly installed on the top of the battery container 1. The output end of the motor 9 extends into the interior of the battery container 1 and is fixedly connected to an elliptical block 10. The top of the fire extinguisher 2 is fixedly connected to a compression plate 11 that works in conjunction with the elliptical block 10. Springs 12 are fixedly connected to the sides of the two compression plates 11 that are far apart from each other. A support block 13 is fixedly connected to one end of the spring 12. The top of the support block 13 is fixedly connected to the inner wall of the battery container 1.

[0029] In this embodiment, considering that most existing fire extinguishers 2 are fixed in a designated position, when the fire extinguisher 2 is activated, the extinguishing agent can only be sprayed in one position and cannot be evenly sprayed inside the battery container 1, which will affect the fire extinguishing effect, a reciprocating mechanism is set up so that when the lithium battery inside the battery container 1 spontaneously combusts, the smoke sensor 8 will receive the smoke signal generated by the combustion and then transmit the smoke signal to the controller 7. At this time, the built-in PLC module of the controller 7 will activate the solenoid valve 4, and the extinguishing agent in the fire extinguisher 2 will enter the dispersion pipe 5 from the transmission pipe 3 under the drive of driving nitrogen, and then be sprayed by multiple nozzles 6. Simultaneously, the controller 7 will also start the motor 9 to rotate. The motor 9 will drive the elliptical block 10 to rotate. When the elliptical block 10 rotates and contacts the extrusion plate 11, the two extrusion plates 11 will move towards the side closer to the spring 12 due to the extrusion. When the elliptical block 10 rotates to the point where it no longer contacts the extrusion plate 11, the elastic force generated by the spring 12 will push the extrusion plate 11 to the side away from the spring 12, so that the extrusion plate 11 moves back and forth. This cycle continues, and the fire extinguisher 2 and other structures will also move back and forth synchronously with the extrusion plate 11, so that the fire extinguisher 2 is evenly sprayed inside the battery container 1, improving the fire extinguishing effect.

[0030] Sliding blocks 22 are fixedly connected to both sides of the extrusion plate 11, and sliding grooves 23 that cooperate with the sliding blocks 22 are opened on the inner wall of the battery container 1.

[0031] In this embodiment, by setting a sliding block 22 and a sliding groove 23, when the elliptical block 10 rotates and contacts the extrusion plate 11, under the restriction of the sliding block 22, the two extrusion plates 11 will be affected by the extrusion and move along the trajectory of the sliding groove 23 towards the side closer to the spring 12, thus playing the role of limiting the movement trajectory.

[0032] Example 2:

[0033] Based on Embodiment 1, the reciprocating mechanism in this embodiment can control the fire extinguisher 2 to move back and forth, and spray the extinguishing agent evenly inside the battery container 1 to improve the fire extinguishing effect. However, considering that the extinguishing agent in the fire extinguisher 2 is driven by nitrogen gas, the nitrogen gas in the fire extinguisher 2 will gradually decrease during the spraying process, affecting the spraying rate of the extinguishing agent and thus affecting the fire extinguishing effect. The pressurizing mechanism of this application includes two pressurizing boxes 14 symmetrically and fixedly connected to the inner wall of the battery container 1. One side of the pressurizing box 14 is fixedly connected to an air inlet pipe 15, and the bottom of the pressurizing box 14 is fixedly connected to an exhaust hose 16. One end of the exhaust hose 16 is fixedly connected to one side of the fire extinguisher 2. The two extrusion plates 11 are fixedly connected to push rods 17 on the opposite sides. One end of the push rod 17 penetrates into the interior of the pressurizing box 14 and is fixedly connected to a push block 18.

[0034] In this embodiment, by setting a pressurization mechanism, when the extrusion plate 11 is compressed and moves closer to the spring 12, it will drive the push rod 17, the push block 18 and the piston plate 21 to move. The piston plate 21 will compress the gas in the pressurization box 14. When the gas pressure reaches the limit of the one-way pressure valve 20, the gas will enter the fire extinguisher 2 through the exhaust hose 16. When the extrusion plate 11 moves away from the spring 12, the push rod 17, the push block 18 and the piston plate 21 will also move synchronously. At this time, the pressurization box 14 is under negative pressure, and the gas will enter the pressurization box 14 through the air inlet pipe 15. This cycle will intermittently inject compressed gas into the fire extinguisher 2. With the help of the compressed gas, the rate of fire extinguishing agent spraying will be increased, thereby improving the fire extinguishing effect.

[0035] A one-way valve 19 is fixedly installed on the surface of the intake pipe 15, and a one-way pressure valve 20 is fixedly installed on the surface of the exhaust hose 16.

[0036] In this embodiment, a one-way valve 19 and a one-way pressure valve 20 are provided. The one-way valve 19 is a valve that can only allow air to enter into the pressurization box 14, and the one-way pressure valve 20 is a valve that can only allow air to enter into the fire extinguisher 2. Therefore, when the pressurization box 14 is under negative pressure, the gas can only enter through the air inlet pipe 15. When the gas in the pressurization box 14 is compressed, the gas can only enter the fire extinguisher 2 through the exhaust hose 16.

[0037] A piston plate 21 is fixedly connected to one side of the push block 18, and the outer surface of the piston plate 21 is in contact with the inner wall of the booster box 14.

[0038] In this embodiment, by setting the piston plate 21, a sealed cavity can be formed inside the booster box 14, which improves the sealing performance of the booster box 14.

[0039] Working principle: When the lithium battery inside the battery container 1 spontaneously combusts, the smoke sensor 8 receives the smoke signal generated by the combustion and then transmits the smoke signal to the controller 7. At this time, the built-in PLC module of the controller 7 will activate the solenoid valve 4. The extinguishing agent in the fire extinguisher 2 will be propelled by the driving nitrogen gas from the transmission pipe 3 into the dispersion pipe 5, and then sprayed out by multiple nozzles 6. At the same time, the controller 7 will also start the motor 9 to rotate. The motor 9 will drive the elliptical block 10 to rotate. When the elliptical block 10 rotates and contacts the extrusion plate 11, the two extrusion plates 11 will be squeezed and move towards the side closer to the spring 12. When the elliptical block 10 rotates to the point where it is no longer in contact with the extrusion plate 11, the elastic force generated by the spring 12 will push the extrusion plate 11 to the side away from the spring 12, so that the extrusion plate 11 moves back and forth. This cycle continues, and the fire extinguisher 2 and other structures will also move back and forth synchronously with the extrusion plate 11, so that the fire extinguisher 2 is evenly sprayed inside the battery container 1, improving the fire extinguishing effect.

[0040] When the compression plate 11 is compressed and moves closer to the spring 12, it will drive the push rod 17, the push block 18 and the piston plate 21 to move. The piston plate 21 will compress the gas in the pressurization box 14. When the gas pressure reaches the limit of the one-way pressure valve 20, the gas will enter the fire extinguisher 2 through the exhaust hose 16. When the compression plate 11 moves away from the spring 12, the push rod 17, the push block 18 and the piston plate 21 will also move synchronously. At this time, the pressurization box 14 is under negative pressure, and the gas will enter the pressurization box 14 through the air inlet pipe 15. This cycle will intermittently inject compressed gas into the fire extinguisher 2. With the help of the compressed gas, the rate of fire extinguishing agent spraying will be increased, thereby improving the fire extinguishing effect.

[0041] It should be noted that the fire extinguisher 2, solenoid valve 4, controller 7, smoke sensor 8 and motor 9 are existing devices or equipment, or devices or equipment that can be implemented with existing technology. Furthermore, the specific composition and principle of the power supply of the fire extinguisher 2, solenoid valve 4, controller 7, smoke sensor 8 and motor 9 are clear to those skilled in the art, and therefore will not be described in detail.

[0042] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A power lithium battery fire extinguishing agent spraying device, comprising a battery container (1), characterized in that: The battery container (1) is equipped with two fire extinguishers (2) for storing extinguishing agent and driving nitrogen. The bottom of the fire extinguisher (2) is fixedly connected to a transmission pipe (3). A solenoid valve (4) is fixedly installed on the surface of the transmission pipe (3). The bottom of the transmission pipe (3) is fixedly connected to a dispersion pipe (5). The bottom of the dispersion pipe (5) is fixedly connected to several nozzles (6). A controller (7) is fixedly installed on one side of the battery container (1). A smoke sensor (8) is fixedly installed inside the battery container (1). A reciprocating mechanism is provided on the top of the battery container (1). The pressurization mechanism is fixedly installed inside the battery container (1). When the reciprocating mechanism drives the fire extinguisher (2) to move back and forth, the pressurization mechanism will inject compressed gas into the fire extinguisher (2).

2. The power lithium battery fire extinguishing agent spraying device according to claim 1, characterized in that: The reciprocating mechanism includes a motor (9) fixedly installed on the top of the battery container (1). The output end of the motor (9) extends into the interior of the battery container (1) and is fixedly connected to an elliptical block (10). The top of the fire extinguisher (2) is fixedly connected to a compression plate (11) that works in conjunction with the elliptical block (10). Springs (12) are fixedly connected to the two compression plates (11) on opposite sides. A support block (13) is fixedly connected to one end of the spring (12). The top of the support block (13) is fixedly connected to the inner wall of the battery container (1).

3. The power lithium battery fire extinguishing agent spraying device according to claim 2, characterized in that: The pressurization mechanism includes two pressurization boxes (14) symmetrically and fixedly connected to the inner wall of the battery container (1). An air inlet pipe (15) is fixedly connected to one side of the pressurization box (14), and an exhaust hose (16) is fixedly connected to the bottom of the pressurization box (14). One end of the exhaust hose (16) is fixedly connected to one side of the fire extinguisher (2). Push rods (17) are fixedly connected to the sides of the two extrusion plates (11) that are far apart from each other. One end of the push rod (17) penetrates into the interior of the pressurization box (14) and is fixedly connected to a push block (18).

4. The power lithium battery fire extinguishing agent spraying device according to claim 3, characterized in that: A one-way valve (19) is fixedly installed on the surface of the air intake pipe (15), and a one-way pressure valve (20) is fixedly installed on the surface of the exhaust hose (16).

5. The power lithium battery fire extinguishing agent spraying device according to claim 3, characterized in that: A piston plate (21) is fixedly connected to one side of the push block (18), and the outer surface of the piston plate (21) is in contact with the inner wall of the booster box (14).

6. The power lithium battery fire extinguishing agent spraying device according to claim 3, characterized in that: Sliding blocks (22) are fixedly connected to both sides of the extrusion plate (11), and a sliding groove (23) is provided on the inner wall of the battery container (1) to cooperate with the sliding blocks (22).

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