Background
With the development of the times, the popularity of new energy automobiles is continuously rising, and the number of ignition and explosion events of the new energy automobiles is also continuously increasing. Currently, a battery pack is a core component of a new energy automobile. The battery pack structure of the new energy automobile on the market is different in size, and the new energy automobile comprises a battery, a box body for accommodating the battery, a high-voltage wire harness, a low-voltage wire harness, a high-voltage power-off system, a battery management system, a thermal management system and the like. At present, most of batteries used in new energy automobiles are lithium batteries, lithium belongs to active metals, and not only can violent chemical reaction occur in combustion, but also a large amount of substances such as carbon monoxide, benzene, alkane, ether, hydrogen fluoride, alkene and the like can be produced, and the risks of severe toxicity and explosion are accompanied. The internal circuit system of the electric automobile and other electrical equipment devices are complex, most of the internal circuit system is inflammable and combustible materials, the battery or the circuit system rapidly spreads to the whole automobile once a fire disaster occurs, meanwhile, the internal space of a battery pack where a lithium battery is located is narrow, under the condition that the internal safety measure of the battery fails, the internal pressure is gradually increased along with the gradual increase of the internal pressure, the normal voltage of the battery is far exceeded, the risks of explosion of the battery and splashing of electrolyte are at any time, and the situation of electric shock injury of personnel is easily caused. The new energy automobile has extremely high fire hazard, and the fire can be extinguished in time or controlled on a smaller scale.
The traditional fire extinguishing modes and equipment have the following defects when facing new energy automobile fires:
(1) Most lithium battery packs carried by new energy automobiles are positioned at the bottom of the automobile, and are wrapped by a shell, so that the lithium battery packs are difficult to disassemble, and therefore, fire extinguishment and cooling of the fire point at the fire position are difficult to directly extinguish;
(2) The circuit pipelines are complicated in distribution, and in the fire extinguishing combat process, the circuit pipelines are required to be disassembled and pulled out of a fire scene to extinguish fire, so that the electric leakage and the short circuit of the circuit are easy to cause, secondary accidents are caused, and unnecessary losses are possibly caused;
(3) The fire ignition point of the fire extinguishing device cannot be rapidly and accurately extinguished, the risk of vehicle reburning is increased, even if an open fire is extinguished, if the interior of the battery pack is not accurately treated, the explosion risk still exists in the battery pack, the potential risks of explosion, electric shock and the like still exist in the reburning of the second wheel, secondary injury is easily caused to personnel and property, and the fire accident loss is aggravated.
The application discloses a Chinese patent with publication number of CN219896844U, which relates to the technical field of fire extinguishing devices and comprises a jacking plate, a puncture module, a jacking driving assembly and a jacking driving assembly, wherein a plurality of water outlets are formed at one end of the puncture module, which is far away from the jacking plate, the jacking driving assembly is suitable for driving the jacking plate to move along the puncture direction of the puncture module through electric driving, and the jacking plate can be slowly lifted through the cooperation of a rotary driving piece, a transmission piece and a screw rod, the speed of the jacking plate is controllable, so that the problem that the risk of impact and explosion increase on ignition equipment is caused by the too high movement speed of the puncture module can be avoided. The above-described device cannot be stably positioned at the bottom of the target vehicle. Therefore, a person skilled in the art is required to solve the above technical problems.
Disclosure of Invention
The technical problem to be solved by the invention is that in the prior art, the positioning effect of the trolley fire extinguishing device is poor, personnel are required to be transported to the bottom of a target trolley, and the risk coefficient is high.
In order to solve the technical problems, the invention adopts the following technical scheme:
The electric automobile fire extinguishing device comprises a high-pressure water spraying module, a low-pressure water spraying module, a tractor and a connecting piece, wherein the high-pressure water spraying module comprises a puncture needle, a jacking screw rod and a high-pressure water spraying port, the high-pressure water spraying port is annularly arranged at the top of the puncture needle, the puncture needle is arranged on a water spraying vehicle main body through the jacking screw rod, a low-pressure water spraying interface and a high-pressure water spraying interface are further arranged on the water spraying vehicle main body, and the high-pressure water spraying port is communicated with the high-pressure water spraying interface through a pipeline;
The low-pressure water spraying module comprises a low-pressure water spraying port and a connecting pipe, the low-pressure water spraying port is arranged at the top of the connecting pipe, the bottom of the connecting pipe is fixed at the top of the water spraying vehicle main body, and the connecting pipe is communicated with the low-pressure water spraying port;
The tractor comprises a tire, rocker arms and positioning grooves, wherein the tire is arranged at two ends of a connecting rod, the connecting rod is sleeved in the rocker arms, the rocker arms are arranged in the tractor, the positioning grooves are formed in the side walls of the tractor, two ends of the rocker arms are clamped in the positioning grooves at two sides of the tractor, an electric telescopic rod is arranged on the rocker arms, the electric telescopic rod is arranged in the tractor, an energy supply device and a driving motor are arranged in the tractor, the driving motor is connected with the connecting rod, and the energy supply device is electrically connected with the electric telescopic rod and the driving motor;
The connecting piece comprises a first connecting piece, a second connecting piece and an electromagnetic lock, wherein the first connecting piece is fixed on the tractor, the second connecting piece is fixed on the water spraying vehicle main body, the electromagnetic lock is arranged between the first connecting piece and the second connecting piece, and the electromagnetic lock is electrically connected with an internal power supply of the tractor;
the remote control module is communicated with an external controller through a wireless sensor.
Through adopting above-mentioned technical scheme, through the design of pjncture needle and jacking lead screw, high-pressure water jet can directly pierce through battery package shell, with the fire extinguishing agent direct injection battery module inside, realize efficient fire extinguishing effect, high-pressure water spray module combines together with low-pressure water spray module, both guaranteed powerful fire extinguishing ability, the auxiliary function of cooling explosion-proof has been provided again, effectively prevent to reignite, the operator can control whole fire extinguishing process outside safe distance through remote control module, avoid the danger that the approach fire source brought, wireless sensor provides real-time data feedback, ensure that the operator can in time adjust the operation strategy, improve the success rate of putting out a fire, realize the accurate control to each subassembly through various sensors (such as rotary encoder, linear displacement sensor, proximity sensor, flow sensor etc.), the possibility of manual maloperation has been reduced.
The remote control module comprises a rocker arm positioning function, a puncture needle jacking function, a water spraying function and a connecting piece separating function, wherein wireless sensors are arranged in the tractor and the water spraying vehicle;
The linear displacement sensor is used for measuring the ascending or descending distance of the puncture needle;
The proximity sensor is used for detecting whether the puncture needle is contacted with a battery pack shell of a target vehicle or not;
flow sensors are arranged on the high-pressure water spraying interface and the low-pressure water spraying interface to monitor the water flow speed and the total amount of the water passing through the high-pressure water spraying port and the low-pressure water spraying port;
the first connecting piece and the second connecting piece are provided with electromagnetic lock state sensors for monitoring the power-on state of the electromagnetic lock, so that the electromagnetic lock can work normally when a disengaging instruction is sent;
And the tractor and the water spraying vehicle body are provided with a proximity sensor for detecting the distance between the two vehicles, so that the two vehicles are separated to a safe distance before separation.
Through adopting the technical scheme, through remote control adjustment tire height, make the tractor can remove smoothly in complicated topography, ensure to reach target vehicle bottom accurately, when carrying out the puncture operation, the rocking arm can withdraw the tire, make the spray truck main part hug closely ground, provide stable support, avoid the back seat force to lead to equipment to shift, linear displacement sensor real-time supervision pjncture needle's rising or decline distance, ensure that the penetration degree of depth is controllable, avoid excessive penetration or not pierce through, proximity sensor detects the pjncture needle whether contact the battery package shell, prevent the maloperation, ensure the security and the accuracy of puncture process, high pressure water jet direct injection fire extinguishing agent, the conflagration is suppressed fast, low pressure water jet auxiliary cooling explosion-proof, prevent the afterburning, improve fire extinguishing efficiency, flow sensor monitoring water flow velocity and total amount, ensure the effective utilization of fire extinguishing agent, avoid extravagant and guarantee fire extinguishing effect, lock state sensor ensures that the lock is put through, when sending the instruction, when breaking off the power release connecting piece, make tractor and spray truck main part safety separation, proximity sensor detects the distance between two cars, ensure that breaks away from the electromagnetic vehicle, the safety control has been carried out the collision with the electromagnetic force sensor, the electromagnetic force sensor is controlled before the unexpected, the control is carried out, the danger is carried out in time, the outside is reduced, the personnel is exposed to the control in time, and is safe, the personnel has been exposed, and is convenient for the control, and is safe has been passed through the radio control.
Further, the tire adopts an inflatable solid tire, and the tire moves upwards under the drive of the rocker arm to enable the bottom of the tractor to be in contact with the working surface, or the tire moves downwards under the drive of the rocker arm to increase the distance between the bottom of the tractor and the working surface.
By adopting the technical scheme, the inflatable solid tire combines the durability of the solid tire and the comfort of the inflatable tire. The design enables the tractor to flexibly move in complex and changeable terrains, including muddy, crushed stone roads and uneven ground, the tires are downwards moved through the rocker arms, the ground clearance of the tractor is increased, the tractor can easily span obstacles such as curbs, small stones and the like, the tractor can smoothly reach the bottom of a target vehicle, when the tractor needs to perform puncturing and water spraying operations, the tires can be upwards moved through the rocker arms, the bottom of the tractor (or the water spraying vehicle) is tightly attached to the ground, and stable support is provided. The device has the advantages that the stability of the device is improved, the problem of backseat force generated during puncturing and water spraying is effectively solved, the device can be prevented from sliding by clinging to the design of a working surface on wet or unstable ground, the safety and accuracy of operation are ensured, in the running process, the inflatable part can absorb part of vibration, the influence on the internal components of the device is reduced, the service life of the device is prolonged, the device is more stable when the device is clinged to the ground, the damage risk caused by vibration or impact is reduced, meanwhile, the possibility of misoperation of an operator is also reduced, the height of a tire can be quickly adjusted by controlling the electric telescopic rod of the rocker arm through the remote control module, different working requirements are met, and the flexibility and the response speed of the operation are improved.
Further, the tire is arranged at the bottom of the main body of the water spraying vehicle, the tire is sleeved on the rocker arm through the connecting rod, the rocker arm is installed in the electric positioning groove, the electric telescopic rod is connected above the rocker arm of the water spraying vehicle, the tire is driven by the electric telescopic rod to be completely retracted into the main body of the water spraying vehicle, so that the bottom of the main body of the water spraying vehicle is contacted with the working surface, or the main body of the water spraying vehicle is driven by the electric telescopic rod to be pulled out, and the distance between the bottom of the main body of the water spraying vehicle and the working surface is increased.
The invention also comprises an electric automobile fire extinguishing method, which uses the electric automobile fire extinguishing device to extinguish the fire of the electric automobile, and comprises the following steps:
step 1, connecting the high-pressure water spray interface and the low-pressure water spray interface with an external water source;
Step2, starting the tractor through a remote control module to pull the water spraying vehicle main body to the bottom of a target vehicle;
Step 3, the tire of the water spraying vehicle is retracted into the water spraying vehicle body through a remote control module, so that the bottom of the water spraying vehicle body is contacted with a working surface;
step 4, unlocking the electromagnetic lock through a remote control module, and driving away the tractor;
Step 5, controlling the puncture needle to lift up through a remote control module, and starting the high-pressure water spraying module and the low-pressure water spraying module;
And 6, retracting the puncture needle after fire extinguishment is finished, and separating the water spraying vehicle main body from the target vehicle.
Further, in step 3, an instruction is sent through an external controller to control the electric telescopic rod, so that the rocker arm drives the tire to move up and down in the positioning groove, the position of the rocker arm is monitored through the rotary encoder, the tire is ensured to be accurately retracted into the spray truck main body, and when the tire is completely retracted into the spray truck main body, the bottom of the spray truck main body is tightly attached to a working surface, so that stable support is provided.
By adopting the technical scheme, when the bottom of the water spraying vehicle body is clung to the ground, the whole device is supported very stably. This is especially important when carrying out key operations such as puncture and water spray, can prevent effectively that equipment from shifting because of recoil or vibrations, stable support has reduced equipment rocking in the operation process, the precision of puncture needle jacking and water spray has been improved, ensure that fire extinguishing agent can accurately pour into the target position, especially on wet smooth or unstable ground, the design of hugging closely working face can prevent equipment slip, the security of operation has been increased, stable work platform has reduced the misoperation that leads to because of equipment instability, further ensured equipment and operating personnel's safety, rotary encoder real-time supervision rocking arm's position, ensure the accurate execution of tire receive and release action, the reliability of system and the controllability of operation have been strengthened, through external controller transmission instruction, automatic control has been realized, the possibility of artificial maloperation has been reduced, work efficiency has been improved, when the tire is completely received in the spray truck main part, the whole device's volume is compacter, be convenient for deposit and transport, the tire is received and can reduce with ground friction under the non-working condition, the life of tire extension.
Further, in step 4, an unlocking instruction is sent through an external controller, the electromagnetic lock state sensor confirms the electrified state of the electromagnetic lock, and when unlocking is needed, the electromagnetic lock is powered off, and the first connecting piece and the second connecting piece are released, so that the tractor is separated from the main body of the water spraying vehicle.
Through adopting above-mentioned technical scheme, electromagnetic lock state sensor real-time supervision electromagnetic lock's circular telegram state ensures that electromagnetic lock can normally work when sending the unblock instruction. The dual confirmation mechanism improves the reliability of unlocking, the separation design enables the tractor to quickly evacuate the dangerous area after the task is completed, damage to the tractor caused by fire spread or other unexpected conditions is avoided, the risk of secondary accidents is reduced, after the tractor is separated from the main body of the water spraying vehicle, the tractor can be far away from high temperature, flame and other potential damage factors, the service life of the tractor is prolonged, the possibility of equipment damage is reduced, the subsequent maintenance and maintenance cost is reduced, the unlocking instruction is sent through the remote control module, the whole separation process can be quickly completed, the response speed of fire extinguishing operation is improved, the separated tractor can be immediately put into other tasks or returned to a standby state, and the flexibility and the efficiency of the whole system are enhanced.
In step 5, an instruction is sent through an external remote controller, the jacking screw rod is controlled to drive the puncture needle to jack up, a linear displacement sensor monitors the lifting distance of the puncture needle to ensure that the puncture needle reaches a preset height, a proximity sensor detects whether the puncture needle contacts a target vehicle, once the puncture needle is contacted, the jacking of the puncture needle is continuously controlled to penetrate through the shell of the target vehicle, a high-pressure water spraying module and a low-pressure water spraying module are started through the external remote controller, and a flow sensor monitors the water flow speed and the total amount of the puncture needle through the high-pressure water spraying port and the low-pressure water spraying port to ensure that the fire extinguishing agent is fully injected into the target vehicle.
By adopting the technical scheme, the linear displacement sensor monitors the ascending distance of the puncture needle in real time, ensures that the puncture needle reaches a preset height, avoids excessive jacking or does not reach a target position, the proximity sensor detects whether the puncture needle contacts the battery pack shell or not, misoperation is prevented, safety and accuracy of the puncture process are ensured, the whole process is controlled by the external remote controller, the possibility of human intervention is reduced, the accuracy and the safety of operation are improved, the puncture needle can accurately penetrate the battery pack shell, fire extinguishing agent is directly injected into the battery pack shell, high-efficiency fire extinguishing effect is realized, the fire disaster is quickly extinguished, the low-pressure water spray port is used for assisting in cooling and explosion prevention, the fire extinguishing efficiency is improved, the flow sensor monitors the water flow speed and the total amount of the high-pressure water spray port and the low-pressure water spray port in real time, the effective utilization of the fire extinguishing agent is ensured, waste is avoided, all sensors provide real-time data feedback, operators are helped to adjust an operation strategy in time, the accurate control and real-time reduction of the risk caused by the misoperation of the puncture needle are ensured, the fire extinguishing device is protected, the safety and the fire extinguishing device is further guaranteed, and the fire extinguishing accident and the safety of other accident can be further reduced.
The invention has the following beneficial effects:
1. According to the invention, through the design of the puncture needle and the jacking screw rod, the high-pressure water jet can directly penetrate through the battery pack shell, the fire extinguishing agent is accurately injected into the battery pack shell, the high-efficiency fire extinguishing effect is realized, the low-pressure water jet module is used for assisting in cooling and explosion prevention, the reburning is prevented, the overall fire extinguishing efficiency is improved, the linear displacement sensor, the proximity sensor and the flow sensor provide real-time monitoring on the height, the contact state and the water flow speed of the puncture needle, the accurate execution of each operation step is ensured, and misoperation and resource waste are avoided;
2. The invention can control the whole fire extinguishing process outside the safe distance through the remote control module, thereby reducing the chance of exposure to dangerous environment, protecting personnel safety, providing a multiple confirmation mechanism for the electromagnetic lock state sensor, the rotary encoder and other sensors, ensuring the accuracy and reliability of each operation step, reducing the risk caused by equipment failure or improper operation, and the system has a self-diagnosis function, can immediately alarm and take measures when abnormality occurs, and further improving the reliability and safety of the system;
3. According to the invention, the inflatable solid tire is adopted, and the rocker arm is controlled by the electric telescopic rod, so that the tire can be freely retracted and extended under different working states, the mobility of the equipment in complex terrains and the capability of crossing obstacles are improved, the stable support during operation is ensured, each component is independently designed, the disassembly and the replacement are convenient, the maintenance process is simplified, the maintenance cost and the maintenance time are reduced, the equipment can be independently operated according to different task requirements by virtue of the separated design of the tractor and the water spraying vehicle main body, and the utilization rate of the equipment is maximized.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific preferred embodiments.
In the description of the present invention, it should be understood that the terms "left", "right", "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and "first", "second", etc. do not indicate the importance of the components, and thus are not to be construed as limiting the present invention. The specific dimensions adopted in the present embodiment are only for illustrating the technical solution, and do not limit the protection scope of the present invention.
As shown in fig. 1,2, 3 and 4, an electric car fire extinguishing apparatus includes a high-pressure water spray module 1, a low-pressure water spray module 2, a water spray car body 3, a tractor 4 and a connector 5, and realizes efficient and safe operation through a remote control module and various sensors. Specifically, the high-pressure water spraying module 1 comprises a puncture needle 11 arranged on a jacking screw rod 12, the jacking screw rod 12 is controlled by an electric driving system to drive the puncture needle 11 to move up and down, and a high-pressure water spraying port 13 is annularly arranged at the top of the puncture needle 11 and is communicated with a high-pressure water spraying interface 14 through a pipeline for spraying high-pressure water flow or fire extinguishing agent. The low-pressure water spraying module 2 is composed of a low-pressure water spraying port 21 arranged at the top of a connecting pipe 22, the bottom of the connecting pipe 22 is fixed at the top of the water spraying vehicle body 3, and is communicated with a low-pressure water spraying interface 23 for spraying low-pressure water flow or assisting in cooling, the water spraying vehicle body 3 is provided with a high-pressure water spraying interface 14 and a low-pressure water spraying interface 23, and the high-pressure water spraying interface 14 and the low-pressure water spraying interface 23 are respectively connected with the high-pressure water spraying module 1 and the low-pressure water spraying module 2 to provide water source input, and a built-in wireless sensor is used for monitoring the states of all components and transmitting data to an external controller. The tire 41 is arranged at two ends of the connecting rod 44, the connecting rod 44 is sleeved in the rocker arm 42, the rocker arm 42 is arranged in the tractor 4, two ends of the rocker arm 42 are clamped in the positioning groove 43, an electric telescopic rod 421 is arranged on the rocker arm 42, the tire 41 moves up and down through electric driving, the energy supply device and the driving motor are arranged in the tractor 4 and provide electric support for the electric telescopic rod 421 and the driving motor, the driving motor is connected with the connecting rod 44 to drive the tractor 4 to move, meanwhile, a rotary encoder is arranged on the rocker arm 42 and used for detecting the current position of the rocker arm 42, the tire 41 is ensured to be accurately received and released, the connecting piece 5 comprises a first connecting piece 51 fixed on the tractor 4 and a second connecting piece 52 fixed on the water spraying main body 3, an electromagnetic lock is arranged between the first connecting piece 51 and the second connecting piece, the electromagnetic lock is powered by an internal power supply of the tractor 4 and used for unlocking and locking through a command sent by a remote control module, and the electromagnetic lock state sensor monitors the electrified state of the electromagnetic lock, and normal work of the electromagnetic lock is ensured when the command is released. The remote control module has the functions of rocker arm 42 positioning, puncture needle 11 lifting, water spraying and connecting piece 5 disengaging, and is communicated with an external controller through a wireless sensor to receive and execute operation instructions, and simultaneously feeds back the working states of all components, the sensor system covers a linear displacement sensor which is arranged on the puncture needle 11 to measure the lifting or falling distance of the puncture needle, a proximity sensor is used for detecting whether the puncture needle 11 contacts with a battery pack shell of a target vehicle and the distance between the tractor 4 and the water spraying vehicle main body 3, a flow sensor is arranged on the high-pressure water spraying interface 14 and the low-pressure water spraying interface 23 to monitor the water flow speed and the total quantity through the high-pressure water spraying port 13 and the low-pressure water spraying port 21, and an electromagnetic lock state sensor is used for monitoring the electrifying state of the electromagnetic lock to ensure that the electromagnetic lock can work normally when the disengaging instructions are sent. The whole system is precisely designed, and high-efficiency and safe fire extinguishing operation is ensured.
As shown in fig. 5, the present invention further provides a fire extinguishing method for an electric vehicle, which uses an electric vehicle fire extinguishing device to extinguish a fire of the electric vehicle, comprising the following steps:
step1, connecting the high-pressure water spray interface 14 and the low-pressure water spray interface 23 with an external water source;
step2, starting the tractor 4 through a remote control module to lead the water spraying vehicle main body 3 to the bottom of a target vehicle;
Step 3, the tire 41 of the water spraying vehicle is retracted into the water spraying vehicle body 3 through a remote control module, so that the bottom of the water spraying vehicle body 3 is contacted with a working surface;
Step 4, unlocking the electromagnetic lock through a remote control module, and driving away the tractor 4;
Step 5, controlling the puncture needle 11 to lift up through a remote control module, and starting the high-pressure water spraying module 1 and the low-pressure water spraying module 2;
And 6, retracting the puncture needle 11 after fire extinguishment is finished, and separating the water spraying vehicle main body 3 from the target vehicle.
Firstly, in the stage of connecting an external water source, a quick connector or a threaded connector is used for connecting the high-pressure water spraying interface 14 and the low-pressure water spraying interface 23 to the external water source, so that all connection points are confirmed to be well sealed, no leakage exists, an external water source valve is opened, water flow is ensured to enter the high-pressure water spraying module 1 and the low-pressure water spraying module 2, water supply stability is ensured, and fire extinguishing efficiency is improved; then, in the stage of towing the sprinkler body 3 to the bottom of the target car, an operator sends a starting command through a remote control module, activates a power system of the sprinkler body 4, controls the sprinkler body 4 to move to the bottom of the target car, monitors the distance in real time by utilizing a proximity sensor, prevents collision, realizes safe operation and flexible maneuver, ensures that equipment can smoothly reach the target position, then, in the stage of retracting the sprinkler tire 41 and clinging to a working surface, sends a command through an external controller, controls an electric telescopic rod 421, enables a rocker arm 42 to drive the tire 41 to move up and down, monitors the position of the rocker arm 42 by utilizing a rotary encoder, ensures that the tire 41 is accurately retracted into the sprinkler body 3, when the tire 41 is completely retracted, the bottom of the sprinkler body 3 clings to the working surface, provides stable support, reduces the influence of a rear seat force, enhances the operation precision, in the stage of unlocking an electromagnetic lock, separates the sprinkler body 4, sends an unlocking command through an external controller, the electromagnetic lock state sensor confirms the electrified state, releases a connecting piece I51 and a connecting piece II 52 after the lock is powered off, separates the sprinkler body 4 from the sprinkler body 3, the sprinkler body 4 from a dangerous area, simplifies the tractor 4, improves the safety, and the safety is protected, then, the safety is lifted up by lifting the electromagnetic lock is lifted by a puncture needle, and the puncture needle is lifted up by a puncture needle 12, and a control module is lifted up by a remote control module, and a puncture needle is lifted up by a control flow 11, the linear displacement sensor monitors the rising distance of the puncture needle 11, ensures that a preset height is reached, the proximity sensor detects whether the puncture needle 11 contacts the target vehicle shell, once the puncture needle 11 continuously rises to penetrate the shell, the high-pressure water spraying module 1 and the low-pressure water spraying module 2 are started, the flow sensor monitors the water flow speed and total quantity of the high-pressure water spraying port 13 and the low-pressure water spraying port 21, ensures that the fire extinguishing agent is fully injected into the target vehicle, directly penetrates the battery package shell, effectively extinguishes the fire, the double-layer water spraying system assists in cooling and explosion prevention, and is used for preventing afterburning, and finally, at the end of fire extinguishment, the puncture needle is retracted and the water spraying vehicle body 3 is separated, the high-pressure water spraying module 1 and the low-pressure water spraying module 2 are closed, water spraying is stopped, the jacking screw rod 12 is controlled to enable the puncture needle 11 to descend and retract to the initial position, the water spraying vehicle body 3 is controlled to exit the bottom of the target vehicle through the remote control module, secondary injury is prevented, evacuation is facilitated, and the exposure time of personnel is reduced.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the specific details of the above embodiments, and various equivalent changes can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the equivalent changes belong to the protection scope of the present invention.