Safety protection system and device for automatically extinguishing fire of new energy electric vehicle

Abstract

The invention relates to the field of new energy electric vehicles, in particular to a safety protection system and device for automatic fire extinguishing aiming at fire breakout of a new energy electric vehicle. A first connecting pipeline is fixedly installed at the output end of a perfluorohexanone storage tank, and a U-shaped high-density polyethylene pipe is fixedly installed at the end, away from the perfluorohexanone storage tank, of the first connecting pipeline; an atomizing nozzle, a temperature sensor and a flame sensor are fixedly installed on the side wall of the U-shaped high-density polyethylene pipe, and an air leakage valve is fixedly installed at the end, away from the sealing metal gasket, of the U-shaped high-density polyethylene pipe. The temperature sensor monitors the temperature fluctuation of the battery pack in real time, pertinent treatment is performed according to three stages of temperature division, the system releases the perfluorohexanone for cooling by slightly opening the atomizing nozzle, fire hazards caused by further temperature rise are avoided, more guarantee time is won for the safety of vehicles and personnel, and potential loss is reduced.

Description

Technical Field

[0001] The present invention relates to the field of new energy electric vehicles, and particularly to a safety protection system and device for automatically extinguishing fires in new energy electric vehicles. Background Art

[0002] With the global emphasis on environmental protection and sustainable development, new energy electric vehicles, as a clean and efficient means of transportation, are experiencing a rapid increase in market share. However, the safety issues of new energy electric vehicles, especially the potential for battery fires, have become a key factor restricting their further development.

[0003] The power source of new energy electric vehicles is mainly lithium batteries. Lithium batteries generate heat during the charging and discharging process. When the heat dissipation system fails or abnormal reactions occur inside the battery, the battery temperature will rise rapidly, leading to thermal runaway and ultimately causing fires or even explosions. Traditional vehicle safety protection systems have extremely limited capabilities in detecting and dealing with battery fires in new energy electric vehicles. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a safety protection system and device for automatically extinguishing fires in new energy electric vehicles, thereby solving the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0006] A safety protection device for automatically extinguishing fires in new energy electric vehicles includes a battery support plate, and a fire extinguishing mechanism is provided on the top of the battery support plate. The fire extinguishing mechanism includes a perfluoromethylcyclohexane storage tank.

[0007] In a possible implementation, the perfluoromethylcyclohexane storage tank is arranged on the top of the battery support plate. A first connecting pipe is fixedly installed at the output end of the perfluoromethylcyclohexane storage tank. One end of the first connecting pipe away from the perfluoromethylcyclohexane storage tank is fixedly installed with a U-shaped high-density polyethylene pipe. An atomizing nozzle is fixedly installed on the side wall of the U-shaped high-density polyethylene pipe. A temperature sensor is fixedly installed on the side wall of the U-shaped high-density polyethylene pipe. A flame sensor is fixedly installed on the side wall of the U-shaped high-density polyethylene pipe. A relief valve is fixedly installed at one end of the U-shaped high-density polyethylene pipe away from the sealing metal gasket.

[0008] In a possible implementation, the temperature sensor and the flame sensor are adjacent in position.

[0009] In a possible implementation, the atomizing nozzle is located between the temperature sensor and the flame sensor, and a notch is provided inside the battery support plate.

[0010] In a possible implementation, a sealing metal washer is fixedly installed inside the battery receiving plate. The sealing metal washer is located inside the notch, and a placement plate is fixedly installed inside the battery receiving plate.

[0011] In a possible implementation, the placement plate is located inside the notch. The top of the placement plate is fixedly installed with a perfluoromethylcyclohexanone storage tank, and a new energy electric vehicle battery pack is fixedly installed inside the battery receiving plate.

[0012] In a possible implementation, a relay group is fixedly installed on the side wall of the new energy electric vehicle battery pack, and a central signal controller is fixedly installed on the side wall of the battery receiving plate. The central signal controller is located at one end of the battery receiving plate close to the air release valve.

[0013] In a possible implementation, a safety protection system for automatically extinguishing fires in new energy electric vehicles includes a detection module, a transmission module, a processing module, a warning module, and an execution module. The detection module is mainly composed of a temperature sensor and a flame sensor, and the two work together to detect the fire risk of new energy electric vehicles in multiple dimensions and comprehensively.

[0014] Temperature sensor: Installed on the side wall of the U-shaped high-density polyethylene pipe, its main responsibility is to monitor the temperature change of the new energy electric vehicle battery pack in real time and accurately capture every fluctuation of the battery pack temperature.

[0015] Flame sensor: Also located on the side wall of the U-shaped high-density polyethylene pipe and adjacent to the temperature sensor. This sensor focuses on sensing the flame generated when the battery pack catches fire. With its sensitive sensing ability, it can quickly respond at the moment of a fire.

[0016] In a possible implementation, the transmission module undertakes the important task of accurately and quickly transmitting the data collected by the detection module to the processing end. After the temperature sensor and the flame sensor obtain the data, they transmit the data to the central signal controller through specific lines. This process ensures the smooth flow of data from the detection end to the processing end, providing a solid information basis for the subsequent system to make accurate decisions and timely operations.

[0017] In a possible implementation, for the processing module, the central signal controller, as the core hub of the processing module, is responsible for receiving and processing the data from the transmission module. Since the data transmission of the temperature sensor and the flame sensor is not on the same route, the central signal controller will process the data of the two respectively.

[0018] Processing of temperature sensor data: The central signal controller divides the temperature into three stages according to the temperature data transmitted by the temperature sensor:

[0019] Stage 1: When the detected temperature is below 60 degrees, the system determines that the battery pack is in a relatively safe state and will not trigger any device;

[0020] Stage 2: If the temperature is higher than 60 degrees and lower than 90 degrees, the system considers that the battery pack temperature is abnormal. At this time, the atomizing nozzle will be slightly opened to release an appropriate amount of perfluorohexanone to cool the battery pack of the new energy electric vehicle until the battery pack temperature returns to the safe range of the first stage.

[0021] Stage 3: Once the temperature is higher than 90 degrees, it indicates that the battery pack temperature is too high and there is a greater risk of fire. At this time, the central signal controller will open half of the atomizing nozzles, increase the release of perfluorohexanone, and continue to cool the battery pack until its temperature drops back to the first stage;

[0022] Flame sensor data processing: When the central signal controller receives a signal from the flame sensor, it immediately determines that the battery pack has caught fire. At this time, the system will immediately perform two key operations: first, quickly cut off the power supply of the new energy electric vehicle battery pack through the relay group to prevent the fire from further spreading and expanding due to power supply; second, open the atomizing nozzle to the maximum extent to quickly release a large amount of perfluorohexanone, striving to extinguish the internal flame in the shortest time.

[0023] The early warning module establishes a connection with the central control AI in the car to realize the timely warning function for the people in the car. When the detection module detects abnormal temperature of the battery pack or signs of fire, the early warning module will quickly send out alarm information to the people in the car through a variety of methods such as the central control display screen and voice prompts. This design is to remind the people in the car to detect potential dangers in time and take corresponding countermeasures to ensure their safety. What is more important is that even if the people in the car fall into a coma due to the danger, the system can still run automatically without relying on human intervention, and continue to perform subsequent fire-fighting work, providing reliable protection for the safety of people in the car and the vehicle.

[0024] In a possible implementation, the execution module includes a plurality of execution units, which are responsible for implementing the instructions issued by the processing module to achieve effective response to the fire hazard of new energy electric vehicles:

[0025] Relay group: After receiving the power-off command from the central signal controller, the relay group can respond quickly and decisively cut off the power supply of the new energy electric vehicle battery pack, thus curbing the further development of the fire from the root;

[0026] Atomizing nozzle: strictly follow the instructions of the central signal controller, slowly release perfluorohexanone when the battery pack temperature is too high, and cool the battery pack through its physical and chemical properties; and when a flame is detected, the atomizing nozzle will release perfluorohexanone to the maximum extent, using its efficient fire extinguishing performance to quickly extinguish the flame;

[0027] Sealed metal washer: Installed inside the battery carrier plate, its main function is to prevent perfluorohexanone from escaping due to the pressure difference inside and outside the battery carrier plate, ensuring that the fire extinguishing agent can fully play its role inside the battery carrier plate, improving the fire extinguishing effect;

[0028] Relief valve: When the pressure inside the battery carrier plate becomes too high due to factors such as heat and gas generated during the fire extinguishing process, the relief valve will automatically open to release the internal gas in a timely manner, avoiding a series of potential risks caused by excessive pressure, such as the rupture of the battery carrier plate and the spread of fire by means of high pressure, thus effectively preventing the further spread of the fire.

[0029] Beneficial effects compared with the prior art:

[0030] 1. In this solution, the safety protection system works in coordination with temperature sensors and flame sensors to accurately detect the fire risk of new energy electric vehicles in multiple dimensions and comprehensively. The temperature sensor monitors the temperature fluctuations of the battery pack in real time and conducts targeted processing according to the temperature in three stages. In the initial stage of abnormal temperature (60 - 90 degrees), the system releases perfluorohexanone by slightly opening the atomizing nozzle to cool down, avoiding further temperature rise and causing a fire, striving for more guarantee time for the safety of vehicles and personnel, and reducing potential losses;

[0031] 2. In this solution, once the flame sensor detects a fire signal, the system immediately executes two key and efficient operations. On the one hand, the relay group quickly cuts off the power supply of the battery pack, preventing the fire from spreading due to continuous power supply at the source; on the other hand, the atomizing nozzle instantly opens to the maximum extent, quickly releasing a large amount of perfluorohexanone. Perfluorohexanone quickly extinguishes the flame caused by battery fire through the dual mechanisms of chemical inhibition and physical asphyxiation, effectively solving the problems of thermal runaway and re-ignition of new energy batteries that are difficult to handle by traditional fire extinguishing agents, greatly improving the fire extinguishing efficiency, and ensuring the safety of the vehicle and the surrounding environment;

[0032] 3. In this solution, the sealed metal washer prevents the fire extinguishing agent from escaping due to the pressure difference, ensuring that perfluorohexanone fully plays its role inside the battery carrier plate, improving the fire extinguishing effect. At the same time, perfluorohexanone is a volatile liquid, does not corrode electronic components and metal materials, has few residues after fire extinguishing, is friendly to the precision equipment inside the vehicle, and will not cause secondary damage. In addition, the relief valve automatically opens when the pressure inside the battery carrier plate is too high, preventing risks such as the rupture of the battery carrier plate and the spread of fire by means of high pressure, providing comprehensive safety protection for new energy electric vehicles. Description of the Drawings

[0033] The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and implement it according to the content of the specification, the following describes the preferred embodiments of the present invention in detail with reference to the accompanying drawings.

[0034] Figure 1 Schematic diagram of the overall structure of the present invention;

[0035] Figure 2 Schematic diagram of the flame sensor structure of the present invention;

[0036] Figure 3 Schematic diagram of the new energy electric vehicle battery pack structure of the present invention;

[0037] Figure 4 Schematic diagram of the air release valve structure of the present invention;

[0038] Figure 5 Schematic diagram of the relay group structure of the present invention.

[0039] Legend description:

[0040] 11. Battery receiving plate; 12. Sealing metal gasket; 13. Perfluorohexanone storage tank; 14. First connecting pipe; 15. U-shaped high-density polyethylene pipe; 16. Temperature sensor; 17. Flame sensor; 18. Air release valve; 19. Notch; 21. Placement plate; 22. New energy electric vehicle battery pack; 23. Relay group; 24. Central signal controller. Detailed implementation manners

[0041] The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention can be implemented in various different forms. Therefore, the present invention is not limited to the embodiments described below;

[0042] The technical solutions in the embodiments of the present application are to solve the problems in the above background technology, and the general idea is as follows:

[0043] Embodiment 1:

[0044] Please refer to Figures 1 to 4 As shown, this embodiment introduces a safety protection device for automatically extinguishing fires in new energy electric vehicles, including a battery receiving plate 11. When the temperature of the new energy electric vehicle battery pack 22 is too high, the temperature sensor 16 transmits the collected temperature data to the central signal controller 24, and the central signal controller 24 will open the switch of the atomizing nozzle, and slowly release the perfluorohexanone inside the perfluorohexanone storage tank 13 to cool the surface of the new energy electric vehicle battery pack 22;

[0045] At the top of the battery receiving plate 11, there is a perfluoromethylcyclohexanone storage tank 13. When a fire breaks out due to excessive temperature, the flame sensor 17 will sense the fire situation of the new energy electric vehicle battery pack 22. The flame sensor 17 will transmit the data to the central signal controller 24. The central signal controller 24 will control the relay group 23. The relay group 23 will cut off the power supply to the new energy electric vehicle battery pack 22 emergently, and then open the atomizing nozzle to the maximum, quickly releasing the perfluoromethylcyclohexanone inside the perfluoromethylcyclohexanone storage tank 13 to extinguish the fire on the new energy electric vehicle battery pack 22 inside the notch 19 emergently. At the output end of the perfluoromethylcyclohexanone storage tank 13, a first connecting pipe 14 is fixedly installed. The sealing metal gasket 12 will prevent the perfluoromethylcyclohexanone from escaping from the inside of the battery receiving plate 11 due to the internal and external pressure difference. One end of the first connecting pipe 14 far from the perfluoromethylcyclohexanone storage tank 13 is fixedly installed with a U-shaped high-density polyethylene pipe 15. When the pressure inside the battery receiving plate 11 is too high, the air release valve 18 will open accordingly, releasing the gas inside the battery receiving plate 11 to prevent the fire from spreading further;

[0046] On the side wall of the U-shaped high-density polyethylene pipe 15, an atomizing nozzle is fixedly installed. On the side wall of the U-shaped high-density polyethylene pipe 15, a temperature sensor 16 is fixedly installed. On the side wall of the U-shaped high-density polyethylene pipe 15, a flame sensor 17 is fixedly installed. The temperature sensor 16 and the flame sensor 17 are adjacent in position. The atomizing nozzle is located between the temperature sensor 16 and the flame sensor 17. One end of the U-shaped high-density polyethylene pipe 15 far from the sealing metal gasket 12 is fixedly installed with an air release valve 18. Inside the battery receiving plate 11, there is a notch 19. Inside the battery receiving plate 11, a sealing metal gasket 12 is fixedly installed. The sealing metal gasket 12 is located inside the notch 19. Inside the battery receiving plate 11, a placement plate 21 is fixedly installed. The placement plate 21 is located inside the notch 19. The top of the placement plate 21 is fixedly installed with the perfluoromethylcyclohexanone storage tank 13. Inside the battery receiving plate 11, a new energy electric vehicle battery pack 22 is fixedly installed. On the side wall of the new energy electric vehicle battery pack 22, a relay group 23 is fixedly installed. On the side wall of the battery receiving plate 11, a central signal controller 24 is fixedly installed. The central signal controller 24 is located at one end of the battery receiving plate 11 close to the air release valve 18.

[0047] Embodiment 2:

[0048] As Figure 5 shown, based on the safety protection device for automatically extinguishing fire in new energy electric vehicles in Embodiment 1, this embodiment provides a safety protection system for automatically extinguishing fire in new energy electric vehicles:

[0049] The safety protection system for automatic fire extinguishing of new energy electric vehicles includes a detection module, a transmission module, a processing module, a warning module and an execution module. The detection module is mainly composed of a temperature sensor and a flame sensor. The two work together to detect the fire risk of new energy electric vehicles in multiple dimensions and comprehensively.

[0050] Temperature sensor: Installed on the side wall of the U-shaped high-density polyethylene pipe, its main responsibility is to monitor the temperature change of the battery pack of new energy electric vehicles in real time and accurately capture every fluctuation of the battery pack temperature.

[0051] Flame sensor: Also located on the side wall of the U-shaped high-density polyethylene pipe and adjacent to the temperature sensor. This sensor focuses on detecting the flames generated when the battery pack catches fire. With its sensitive perception ability, it can quickly respond at the moment of a fire.

[0052] Transmission module. The transmission module undertakes the important task of accurately and quickly transmitting the data collected by the detection module to the processing end. After the temperature sensor and the flame sensor obtain the data, they transmit the data to the central signal controller through specific lines. This process ensures the smooth flow of data from the detection end to the processing end, providing a solid information basis for the subsequent system to make accurate decisions and timely operations.

[0053] Processing module. The central signal controller, as the core hub of the processing module, is responsible for receiving and processing the data from the transmission module. Since the data transmission of the temperature sensor and the flame sensor is not on the same route, the central signal controller will process the data of the two respectively.

[0054] Processing of temperature sensor data: The central signal controller divides the temperature into three stages according to the temperature data transmitted by the temperature sensor:

[0055] The first stage: When the detected temperature is lower than 60 degrees, the system determines that the battery pack is in a relatively safe state at this time and will not trigger any device.

[0056] The second stage: If the temperature is higher than 60 degrees and lower than 90 degrees, the system believes that the temperature of the battery pack is abnormal. At this time, the atomizing nozzle will be slightly opened to release an appropriate amount of perfluoromethylcyclohexane to cool the battery pack of the new energy electric vehicle until the temperature of the battery pack returns to the safe range of the first stage.

[0057] The third stage: Once the temperature is higher than 90 degrees, it indicates that the temperature of the battery pack is too high and there is a greater risk of fire. At this time, the central signal controller will open half of the atomizing nozzles to increase the release amount of perfluoromethylcyclohexane and continuously cool the battery pack until its temperature drops back to the first stage.

[0058] Flame sensor data processing: When the central signal controller receives a signal from the flame sensor, it immediately determines that the battery pack has caught fire. At this time, the system will immediately perform two key operations: first, quickly cut off the power supply of the new energy electric vehicle battery pack through the relay group to prevent the fire from further spreading and expanding due to power supply; second, open the atomizing nozzle to the maximum extent to quickly release a large amount of perfluorohexanone, striving to extinguish the internal flame in the shortest time.

[0059] The early warning module establishes a connection with the central control AI in the car to realize the timely warning function for the people in the car. When the detection module detects abnormal temperature of the battery pack or signs of fire, the early warning module will use a variety of methods such as the central control display screen and voice prompts to quickly send alarm information to the people in the car. This design aims to remind the people in the car to detect potential dangers in time and take corresponding countermeasures to ensure their safety. What is more important is that even if the people in the car fall into a coma due to the danger, the system can still operate automatically without relying on human intervention, and continue to perform subsequent fire-fighting work, providing reliable protection for the safety of people and vehicles in the car.

[0060] The execution module contains multiple execution units, which are responsible for implementing the instructions issued by the processing module to effectively respond to the fire hazards of new energy electric vehicles:

[0061] Relay group: After receiving the power-off command from the central signal controller, the relay group can respond quickly and decisively cut off the power supply of the new energy electric vehicle battery pack, thus curbing the further development of the fire from the root;

[0062] Atomizing nozzle: strictly follow the instructions of the central signal controller, slowly release perfluorohexanone when the battery pack temperature is too high, and cool the battery pack through its physical and chemical properties; and when a flame is detected, the atomizing nozzle will release perfluorohexanone to the maximum extent, using its efficient fire extinguishing performance to quickly extinguish the flame;

[0063] Sealing metal gasket: installed inside the battery receiving plate. Its main function is to prevent perfluorohexanone from escaping due to the pressure difference between the inside and outside of the battery receiving plate, ensuring that the fire extinguishing agent can fully play its role inside the battery receiving plate and improve the fire extinguishing effect;

[0064] Deflation valve: When the pressure inside the battery receiving plate is too high due to factors such as heat and gas generated during the fire extinguishing process, the deflation valve will automatically open to release the internal gas in time to avoid a series of potential risks caused by excessive pressure, such as rupture of the battery receiving plate and the spread of fire with the help of high pressure, thereby effectively preventing the fire from further spreading.

[0065] In summary, the details are as follows:

[0066] When the temperature of the new energy electric vehicle battery pack becomes too high, the temperature sensor installed on the side wall of the U-shaped high-density polyethylene pipe and close to the battery pack starts to work. The temperature sensor has the ability to sense temperature changes and convert them into electrical signal data. At this time, it will collect relevant data on the excessive temperature of the battery pack and transmit this data to the central signal controller on the side wall of the battery receiving plate in the form of electrical signals, which receives and analyzes the data from the temperature sensor. After confirming that the battery pack temperature is too high, the central signal controller issues a control command according to the preset program and logic to turn on the switch of the atomizing nozzle connected to the side wall of the U-shaped high-density polyethylene pipe. Since the perfluoromethylcyclohexane storage tank is connected to the U-shaped high-density polyethylene pipe through the first connecting pipe, at this time, the perfluoromethylcyclohexane inside the perfluoromethylcyclohexane storage tank slowly flows through the pipe to the atomizing nozzle under its own pressure or the possible auxiliary pressure device and is released in an atomized form by the atomizing nozzle to cool the surface of the new energy electric vehicle battery pack. Perfluoromethylcyclohexane has good cooling performance and can effectively absorb the heat on the surface of the battery pack, thereby reducing the temperature of the battery pack and preventing further temperature rise from causing more serious problems.

[0067] When the temperature of the battery pack becomes too high and leads to a fire, the flame sensor, which is also installed on the side wall of the U-shaped high-density polyethylene pipe and adjacent to the temperature sensor, comes into play. The flame sensor can sensitively detect the flame characteristics generated by the fire around the new energy electric vehicle battery pack, such as infrared rays and ultraviolet rays, and convert these flame information into electrical signal data and quickly transmit it to the central signal controller. After receiving the data transmitted by the flame sensor, the central signal controller immediately starts a series of emergency response measures. First, the central signal controller sends a control signal to the relay group connected to the side wall of the new energy electric vehicle battery pack. After receiving the signal, the relay group quickly performs an emergency power-off operation on the new energy electric vehicle battery pack. This step is crucial because cutting off the power supply can prevent the battery from continuing to supply energy in the event of a fire and prevent the fire from spreading further due to the continuous supply of electrical energy. At the same time, the central signal controller adjusts the opening degree of the atomizing nozzle to the maximum, so that the perfluoromethylcyclohexane inside the perfluoromethylcyclohexane storage tank can be quickly released through the atomizing nozzle, and a large number of perfluoromethylcyclohexane droplets quickly fill the slots opened inside the battery receiving plate to perform an emergency fire extinguishing operation on the new energy electric vehicle battery pack inside the slots. Perfluoromethylcyclohexane not only has good cooling performance but also can effectively inhibit the combustion reaction, thus achieving the purpose of extinguishing the fire.

[0068] During the entire fire extinguishing process, in order to prevent perfluoromethylcyclohexanone from escaping from the inside of the battery carrier due to the pressure difference between the inside and outside of the battery carrier and affecting the fire extinguishing effect, a sealing metal washer is fixedly installed inside the battery carrier and at the notch. The sealing metal washer has good sealing performance and can effectively fill the possible gaps inside the battery carrier, thereby preventing perfluoromethylcyclohexanone from leaking out through these gaps, ensuring that perfluoromethylcyclohexanone can fully play its role in cooling and extinguishing the fire inside the battery carrier. When the pressure inside the battery carrier becomes too high due to factors such as heat and gas generated during the fire extinguishing process, the air release valve installed at the end of the U-shaped high-density polyethylene tube away from the sealing metal washer will come into play. The air release valve is usually set with a specific pressure threshold. When the internal pressure reaches or exceeds this threshold, the air release valve will automatically open to release the gas inside the battery carrier, thereby reducing the internal pressure. This can prevent damage to the battery carrier and the entire system caused by excessive internal pressure, and at the same time avoid the risk that the fire may spread further due to the pressure.

[0069] Finally, it should be noted that: Obviously, the above embodiments are only examples given to clearly illustrate the present invention, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A safety protection device for automatically extinguishing fires in new energy electric vehicles, including a battery receiving plate (11), characterized in that, A fire extinguishing mechanism is arranged on the top of the battery receiving plate (11), and the fire extinguishing mechanism comprises a perfluorohexanone storage tank (13); The perfluorohexanone storage tank (13) is arranged on the top of the battery receiving plate (11); a first connecting pipe (14) is fixedly installed at the output end of the perfluorohexanone storage tank (13); a U-shaped high-density polyethylene pipe (15) is fixedly installed at one end of the first connecting pipe (14) away from the perfluorohexanone storage tank (13); an atomizing nozzle is fixedly installed on the side wall of the U-shaped high-density polyethylene pipe (15); a temperature sensor (16) is fixedly installed on the side wall of the U-shaped high-density polyethylene pipe (15); a flame sensor (17) is fixedly installed on the side wall of the U-shaped high-density polyethylene pipe (15); and a deflation valve (18) is fixedly installed at one end of the U-shaped high-density polyethylene pipe (15) away from the sealing metal gasket (12).

2. The safety protection device for automatically extinguishing fires in new energy electric vehicles according to claim 1, wherein, The temperature sensor (16) and the flame sensor (17) are located adjacent to each other.

3. The safety protection device for automatically extinguishing fires in new energy electric vehicles according to claim 2, characterized in that, The atomizing nozzle is located between the temperature sensor (16) and the flame sensor (17), and a notch (19) is provided inside the battery receiving plate (11).

4. The safety protection device for automatically extinguishing fires in new energy electric vehicles according to claim 3, characterized in that, A sealing metal gasket (12) is fixedly installed inside the battery receiving plate (11), and the sealing metal gasket (12) is located inside the notch (19). A placement plate (21) is fixedly installed inside the battery receiving plate (11).

5. The safety protection device for automatically extinguishing a fire in a new energy electric vehicle according to claim 4, characterized in that, The placement plate (21) is located inside the notch (19), the top of the placement plate (21) is fixedly mounted to the perfluorohexanone storage tank (13), and a new energy electric vehicle battery pack (22) is fixedly mounted inside the battery receiving plate (11).

6. The safety protection device for automatically extinguishing fires in new energy electric vehicles according to claim 5, characterized in that, A relay group (23) is fixedly mounted on the side wall of the new energy electric vehicle battery pack (22), and a central signal controller (24) is fixedly mounted on the side wall of the battery receiving plate (11). The central signal controller (24) is located at one end of the battery receiving plate (11) close to the deflation valve (18).

7. A safety protection system for automatically extinguishing a fire in a new energy electric vehicle, which is applied to a safety protection device for automatically extinguishing a fire in a new energy electric vehicle according to any one of claims 1-6, characterized in that, The system includes a detection module, a transmission module, a processing module, an early warning module and an execution module. The detection module is mainly composed of a temperature sensor and a flame sensor, which work together to detect the fire hazard of new energy electric vehicles in a multi-dimensional and all-round manner. Temperature sensor: installed on the side wall of the U-shaped high-density polyethylene tube. Its main function is to monitor the temperature changes of the battery pack of the new energy electric vehicle in real time and accurately capture every fluctuation of the battery pack temperature. Flame sensor: Also located on the side wall of the U-shaped high-density polyethylene tube and adjacent to the temperature sensor, this sensor focuses on sensing the flame generated when the battery pack catches fire. With its keen perception ability, it can respond quickly at the moment of fire.

8. The safety protection system for automatically extinguishing fire in new energy electric vehicles according to claim 7, wherein The transmission module is responsible for the important task of accurately and quickly transmitting the data collected by the detection module to the processing end. After acquiring the data, the temperature sensor and the flame sensor transmit the data to the central signal controller through a specific line; this process ensures the smooth flow of data from the detection end to the processing end.

9. The safety protection system for automatically extinguishing fires in new energy electric vehicles according to claim 7, characterized in that, Processing module, the central signal controller is the core hub of the processing module, responsible for receiving and processing the data from the transmission module. Since the data transmission routes of the temperature sensor and the flame sensor are not the same, the central signal controller will process the data of the two separately; Temperature sensor data processing: The central signal controller divides the temperature into three stages based on the temperature data transmitted by the temperature sensor: Stage 1: When the detected temperature is below 60 degrees, the system determines that the battery pack is in a relatively safe state and will not trigger any device; Stage 2: If the temperature is higher than 60 degrees and lower than 90 degrees, the system considers that the battery pack temperature is abnormal. At this time, the atomizing nozzle will be slightly opened to release an appropriate amount of perfluorohexanone to cool the battery pack of the new energy electric vehicle until the battery pack temperature returns to the safe range of the first stage. Stage 3: Once the temperature is higher than 90 degrees, it indicates that the battery pack temperature is too high and there is a greater risk of fire. At this time, the central signal controller will open half of the atomizing nozzles, increase the release of perfluorohexanone, and continue to cool the battery pack until its temperature drops back to the first stage; Flame sensor data processing: When the central signal controller receives the signal from the flame sensor, it immediately determines that the battery pack has caught fire. At this time, the system will immediately perform two key operations: first, quickly cut off the power supply of the new energy electric vehicle battery pack through the relay group to prevent the fire from further spreading and expanding due to the power supply; second, open the atomizing nozzle to the maximum extent to quickly release a large amount of perfluorohexanone, striving to extinguish the internal flame in the shortest time; The early warning module establishes a connection with the central control AI in the car to realize the timely warning function for the people in the car. When the detection module detects that the battery pack temperature is abnormal or there are signs of fire, the early warning module will use the central control display screen and voice prompts in a variety of ways to quickly send alarm information to the people in the car. This design is intended to remind the people in the car to detect potential dangers in time and take corresponding countermeasures to ensure their safety. What is more important is that even if the people in the car fall into a coma due to the danger, the system can still operate automatically without relying on human intervention, and continue to perform subsequent fire-fighting work, providing reliable protection for the safety of people in the car and the vehicle.

10. A safety protection system for automatically extinguishing fires in new energy electric vehicles according to claim 7, characterized in that, The execution module contains multiple execution units, which are responsible for implementing the instructions issued by the processing module to deal with the fire of the source tram; Relay group: After receiving the power-off command from the central signal controller, the relay group can respond quickly and decisively cut off the power supply of the new energy electric vehicle battery pack to curb the development of the fire; Atomizing nozzle: strictly follow the instructions of the central signal controller, slowly release perfluorohexanone when the battery pack temperature is too high, and cool the battery pack through its physical and chemical properties; and when a flame is detected, the atomizing nozzle will release perfluorohexanone to the maximum extent, using its efficient fire extinguishing performance to quickly extinguish the flame; Sealing metal gasket: installed inside the battery receiving plate to prevent perfluorohexanone from escaping due to the pressure difference between the inside and outside of the battery receiving plate, ensuring that the fire extinguishing agent extinguishes the fire source inside the battery receiving plate; Deflation valve: When the pressure inside the battery receiving plate is too high due to the heat and gas factors generated during the fire extinguishing process, the deflation valve opens to release the internal gas to avoid risks caused by excessive pressure, including rupture of the battery receiving plate and the spread of fire with the help of high pressure.

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