Automobile fire prevention technology and device

Abstract

The invention discloses an automobile fireproof technology and device. The invention relates to the technical field of automobile fire prevention. The technical problem to be solved is clearly reflected that with the increasing number of automobiles, the situations of spontaneous combustion of the automobiles, ignition of an external fire source or ignition of surrounding automobiles due to combustion of the automobiles occur occasionally, and serious property loss is caused. The technical scheme for solving the problem is characterized in that when a fire source exists near the vehicle or the vehicle is on fire due to self reasons, the technical device can timely discover and timely send information to an associated mobile phone and give an audible and visual alarm, vehicle storage water, windshield washer fluid and cooling liquid are automatically pressurized by a water pump and then sprayed to a high-temperature area of the vehicle through a pipeline, a water spray nozzle and the like, and the vehicle is prevented from being damaged. And if the vehicle has an intelligent driving function, the device can automatically give an instruction for starting the function, so that the vehicle can automatically drive to a safe area. The device is used for spraying water to extinguish fire and cool the vehicle when the vehicle is on fire due to a fire source or other reasons, and the vehicle can automatically drive away from the fire source in time through the intelligent driving function of the vehicle and is prevented from being ignited.

Description

Technical Field:

[0001] The field of automotive fire prevention technology. Technical Background:

[0002] With the continuous increase in the number of various automobiles, the number of vehicle spontaneous combustion incidents has also gradually increased. Especially for vehicles parked in relatively concentrated areas, if one vehicle catches fire due to spontaneous combustion or other reasons, it often ignites adjacent vehicles. Because current vehicles on the market do not have fire prevention and flame retardant functions and cannot block the spread of fire. If there is a wind boost, it will cause a large area of multiple vehicles to burn, resulting in huge property losses and environmental pollution. At the same time, it also adds some psychological burdens to car buyers.

[0003] Based on the above, our company comprehensively utilizes existing mature technologies on the market and applies them to the field of automotive fire prevention. We have innovatively and inventively combined technologies to develop an automotive fire prevention technology and device. When the vehicle encounters internal and external fire sources, this technology device can automatically send vehicle fire information, videos, etc. to the mobile phones of the vehicle owner and associated persons, attracting the attention of all associated persons and enabling early rescue of the vehicle. It can automatically emit a high-decibel alarm sound and flashing lights to attract the attention of people around and conduct fire extinguishing and rescue operations on the vehicle. The vehicle itself can actively spray water for self-rescue in a timely manner, actively extinguish the fire source in the initial stage of vehicle spontaneous combustion (except for spontaneous combustion of new energy power battery packs), and can also automatically send a vehicle relocation instruction to the on-board computer of intelligent driving vehicles with automatic parking and automatic departure functions, enabling them to automatically move the vehicle to a safe area to avoid major property losses. This invention device can also prevent the spread of the fire source while protecting the safety of the vehicle itself. Summary of the Invention:

[0004] Most fires start with extremely small fire sources. These weak fire sources are not discovered and extinguished in time. As the fire gradually grows, it becomes a large fire that is difficult to extinguish, causing huge economic losses or casualties. Initially, it may be a small cigarette butt or a small electrical short circuit fire, both of which may trigger a fire. If it is discovered in the initial stage of the flame ignition and small measures are taken, it is almost possible to extinguish the flame in its budding state with little cost and avoid the occurrence of a fire.

[0005] The formation of most automotive fires is the same. If the fire can be discovered and extinguished by spraying water in time when it just starts, generally, a large automotive fire will not form (except for the ignition of new energy vehicle power battery packs).

[0006] Under normal circumstances, the conditions required for an item to burn are: (1) combustible (basic condition), (2) supporter of combustion (mostly oxygen), and (3) ignition point (or ignition source). If these three conditions are met, combustion can occur. If any one of these three conditions is missing, combustion will not occur. Additionally, wet combustibles are generally less likely to be ignited compared to dry ones. In the case of automobiles, if all relevant components of the vehicle are made of flame-retardant materials, removing the most important basic condition of the three elements of the combustion condition, i.e., the "combustible", will make the combustion condition not hold, and it will surely prevent the vehicle from burning. This is an automotive passive fire prevention and flame retardant technology with obvious fire prevention effects. Although automotive flame retardant technology is very effective in preventing vehicle combustion, currently, no automobiles have flame retardant functions. If there is a technology that can accurately detect the location and area of the high-temperature zone or the flame when the vehicle is very close to the flame, or at the initial stage when the vehicle catches fire itself and the fire is just starting and the fire is extremely small, and can actively and timely spray water to cool down the vehicle in this area or extinguish the flame, or while automatically spraying water to cool down, make the vehicle automatically drive away from the high-temperature fire source area in a timely manner. Applying this automotive active fire prevention technology, in many cases, even vehicles without flame retardant functions can avoid vehicle combustion.

[0007] The automotive fire prevention technology and device invented by our company is based on the in-vehicle Internet of Things intelligent module. After being transformed and upgraded with an external 5G communication module, it interacts with a series of associated hardware units such as associated mobile phones, vehicle driving computers, sensors, cameras, water spray nozzles, water pumps, motors, solenoid valves, etc. Together with these associated hardware, it forms an intelligent automotive active fire prevention technology device centered around the in-vehicle Internet of Things intelligent module, with functions such as automatic water spraying, fire extinguishing and cooling, and alarm. It can also send fire information, videos, and automatic fire-related vehicle relocation information to the associated mobile phone. This device can automatically identify whether a vehicle is on fire, whether it is near a high-temperature fire source, and whether there is a risk of being ignited by the fire source. At the moment when the fire just starts inside and outside the vehicle, it automatically sprays water to extinguish the fire and cool down the high-temperature area and the part of the vehicle with fire. The vehicle fire information processing and control center of this device can send fire information to the owner's mobile phone and other associated people's mobile phones when the fire just starts inside and outside the vehicle, send video images inside and outside the vehicle to the owner, and also send a vehicle relocation instruction to the vehicle driving computer with automatic parking and automatic out-of-garage functions, making it automatically drive the vehicle to a safe area to avoid causing significant property losses.

[0008] The device of the present invention mainly includes the following components and materials: 1. Vehicle fire information processing and control center (i.e., the upgraded in-vehicle Internet of Things (IOT) module, which has functional modules such as an information intelligent processing IPU module, a Bluetooth module, an ESP8266 module with WiFi function, a cellular 5G network module, an IoT card, a camera module, a relay control module, an isolated DC-DC power module, a heat dissipation module, etc., hereinafter referred to as the "vehicle control center"); 2. Sensors (including temperature sensors, flame sensors, human presence sensors, water flow sensors); 3. Spraying nozzles; 4. Spraying nozzle control motors; 5. Liquid storage containers (including water storage containers, windshield washer fluid bottles, all coolant circulation pipelines and containers); 6. Fire extinguishing liquids (including water or antifreeze, windshield washer fluid, engine coolant, coolant for new energy vehicle power battery packs and chargers, etc.); 7. Fireproof and high-temperature-resistant wires; 8. Water pipes (copper pipes, silicone hoses); 9. Backup battery (12V 65Ah); 10. Isolated DC-DC charging module; 11. Buzzers; 12. Loudspeakers; 13. Water pumps (including water or antifreeze pumps, windshield washer pumps, coolant pumps for fire extinguishing); 14. Solenoid valves (including normally open solenoid valves and normally closed solenoid valves); 15. Check valves; 16. Cameras, etc.

[0009] The automotive fire prevention technology device invented by our company is mainly divided into the following five major parts according to its functions: 1. Vehicle fire information processing and control center (hereinafter referred to as the "vehicle control center"); 2. Signal detection and transmission system; 3. Spraying fire extinguishing and cooling system; 4. Power supply system; 5. Intelligent alarm system.

[0010] I. Vehicle fire information processing and control center

[0011] The Vehicle Fire Information Processing and Control Center (hereinafter referred to as the "Vehicle Control Center") is an in-vehicle Internet of Things (IoT) intelligent module, which is the brain component of the technical device of the present invention. It is equivalent to the main control board part of a computer host and is an intelligent electronic module complex integrating multiple functions. It includes functional modules such as an information intelligent processing IPU module, a Bluetooth module, an ESP8266 module with WiFi function, a cellular 5G network module, an IoT card, a camera module, a relay control module, an isolated DC-DC power module, an isolated DC-DC charging module, and a heat dissipation module. Each functional module can not only independently implement its own functions but also cooperate with other modules. Externally, various sensors, cameras, water pumps, solenoid valves, buzzers, water spray nozzle control motors, vehicle on-board computers and other software and hardware devices are connected through fireproof wires via an interface to coordinate the cooperation logic and communication relationship between these software and hardware devices, control their working methods and time, and jointly complete tasks such as receiving information, processing information, sending information, sending alarms, controlling water spraying, and controlling the vehicle. Without this "Vehicle Control Center", other components are like a mess of loose sand, unable to establish a communication relationship between software and hardware, let alone coordinate and cooperate with each other, and cannot achieve many functions such as receiving and sending information, spraying water to extinguish the fire and cool down the vehicle, and controlling the vehicle to leave the dangerous area. The electrical energy consumed by the "Vehicle Control Center" is provided by a 12V 65Ah battery of the backup power supply.

[0012] The functions of the Vehicle Fire Information Processing and Control Center are mainly divided into the following seven aspects:

[0013] 1. Receiving information.

[0014] 1.1. Receiving various different information collected by associated sensors. Receiving temperature change information transmitted by temperature sensors in different areas of the vehicle, flame change information transmitted by flame sensors, human body information transmitted by human presence sensors in the cockpit, and information on whether there is liquid flow in a specific pipeline transmitted by water flow sensors. According to these information data in different positions, quickly and accurately determine whether a fire has occurred inside and outside the vehicle, and determine the fire time and fire area.

[0015] 1.2. Receiving command information sent from the owner's mobile phone, and realizing the functions of automatic vehicle moving and controlling the water spray nozzle to spray water for fire extinguishing and cooling through the "Vehicle Control Center" and the associated on-board computer.

[0016] 2. Automatically processing information, issuing a series of associated commands, and completing the water spraying task. According to the information received by the sensors, automatically coordinate the working sequence of each component in the device system, consume various water sources in the vehicle, supply water to the water spray nozzles in the high-temperature area of the vehicle, and extinguish the fire and cool down the high-temperature area of the vehicle.

[0017] According to the changes in the information transmitted by sensors in different areas of the vehicle, determine the flame ignition time and area range. Through relevant relays, supply power to the control motor of the water spray nozzles in the high-temperature area, so that the water spray nozzles in the high-temperature area protrude from their original hidden positions to prepare for water spraying to extinguish the fire, or rotate and unfold the folded water spray nozzles to a set angle and reach the set position to prepare for water spraying to extinguish the fire. Energize the solenoid valve on the waterway passage leading to the high-temperature area through relevant relays, so that it changes from the closed state to the open state and remains in the open state, opening the waterway passage leading to the water spray nozzles in the high-temperature area. Do not energize the solenoid valve on the waterway passage of the water spray nozzles leading to other areas, so that it always remains in the closed state, and do not supply power to the control motor of the water spray nozzles leading to other areas, so that the water spray nozzles in other areas remain in the hidden state.

[0018] There are three types of on-vehicle water source liquids for fire extinguishing and temperature reduction, and multiple containers are used to hold these water source liquids. The three types of fire-fighting water source liquids are: (1) water or antifreeze in the water storage container; (2) window cleaning liquid (windshield washer fluid); (3) coolant. The coolant is further divided into coolant for fuel engines and coolant for new energy vehicle power battery packs, chargers, etc. The multiple containers refer to: (1) there are two or more water storage containers; (2) one glass cleaning liquid pot; (3) the fuel engine coolant storage pot and the entire heat dissipation and cooling pipeline; (4) the new energy vehicle power battery pack coolant storage pot and the entire heat dissipation, cooling, and circulation pipelines of the power battery pack, charger, motor, etc.

[0019] The consumption sequence of the in-vehicle water source liquid for fire extinguishing and temperature reduction is as follows: the antifreeze in water storage container 1 → the antifreeze in water storage container 2 → the antifreeze in water storage container 3 → the glass cleaning fluid → the engine coolant (for fuel vehicles or new energy range-extended vehicles) → the coolant for the power battery pack and the charger (for new energy electric vehicles). When there is a fire inside or outside the vehicle, first turn on the water pump in water storage container 1, and pump the water or antifreeze stored in water storage container 1 to supply high-pressure water flow to the high-temperature area nozzles to extinguish the fire and reduce the temperature in the high-temperature area of the vehicle. After the water in water storage container 1 is consumed, or due to reasons such as leakage of water storage container 1 resulting in no water storage, or the water pump in water storage container 1 is damaged and cannot pump water, the liquid in the water passage will no longer flow. In this case, the water flow sensor adjacent to the water pump in the water passage cannot detect the liquid flow information, and will transmit the information that there is no liquid flow in this section of the water passage to the "vehicle control center". After receiving the information of no liquid flow, the "vehicle control center" will promptly turn off the water pump in water storage container 1 and at the same time close the solenoid valve between this water pump and the "liquid convergence chamber". At the same time, turn on the water pump in water storage container 2 and the solenoid valve between this water pump and the liquid convergence chamber, and continue to use the water or antifreeze stored in water storage container 2 to supply high-pressure water flow to the high-temperature area nozzles to extinguish the fire and reduce the temperature in the high-temperature area of the vehicle. After the water or antifreeze in water storage container 2 is consumed, or due to other reasons resulting in no water in water storage container 2, the water flow sensor adjacent to the water pump in the water passage will transmit the information that there is no liquid flow in this section of the water passage to the "vehicle control center". After receiving the information of no liquid flow from this water flow sensor, the "vehicle control center" will promptly turn off the water pump in water storage container 2 and the solenoid valve between this water pump and the liquid convergence chamber. Then it will automatically enter the next round of opening and closing cycle... turn on the glass window cleaning water pump and the solenoid valve between the glass window cleaning water pump and the liquid convergence chamber, and close the solenoid valve of the water passage leading to the glass window. When the glass water is consumed, the water flow sensor between the glass window cleaning water pump and the liquid convergence chamber will transmit the information of no liquid flow to the "vehicle control center", and the "vehicle control center" will also turn off the glass cleaning water pump and the solenoid valve between the glass cleaning water pump and the liquid convergence chamber, turn on the engine coolant fire extinguishing water pump and the solenoid valve between the coolant fire extinguishing water pump and the liquid convergence chamber, and continue to spray water to extinguish the fire and reduce the temperature of the vehicle. When the engine coolant is consumed, the water spraying ends. However, if it is a vehicle with both an engine and a power battery such as a new energy range-extended vehicle, according to the above procedure, continue to consume the coolant of the power battery pack and the charger, etc. to extinguish the fire and reduce the temperature of the vehicle. If it is a pure electric vehicle, when the glass water consumption ends, it will directly enter the consumption of the coolant of the power battery pack and the charger, etc., until all the coolant is consumed and the entire water spraying process ends.

[0020] 3. Emit audible and visual alarms. In the initial stage when there is a fire inside or outside the vehicle, after the "Vehicle Control Center" receives the high-temperature information collected by the temperature sensor or the fire information collected by the flame sensor, the "Vehicle Control Center" automatically conducts the power supply circuit between the backup battery and the on-vehicle buzzer and horn through the relay in the control circuit, making the buzzer and horn continuously sound at a high decibel. Conduct the power supply circuit between the backup battery and the audio device and loudspeaker, making them automatically emit sounds such as "Fire fighting! There's a fire!" which simulate the shouting content of a human. Conduct the power supply circuit between the backup battery and the on-vehicle lamps, making them flash continuously. The simultaneous emission of audible and visual alarms can attract the attention of people around, whether during the day or at night, enabling people to quickly determine which vehicle may be in danger and promptly rescue and extinguish the fire for that vehicle to reduce vehicle losses.

[0021] 4. Push fire information to the vehicle owner and related personnel to remind the owner to quickly conduct rescue or move the vehicle. In the initial stage when there is a fire inside or outside the vehicle, after the "Vehicle Control Center" receives the fire information from the temperature sensor or the flame sensor, it automatically pushes the vehicle fire information to the vehicle owner's mobile phone and multiple other related mobile phones through the Internet of Things system composed of the IPU intelligent processing module, the cellular 5G network module, the Internet of Things card, the ESP8266 module with WiFi function, and the Bluetooth module, etc., warning the vehicle owner and related personnel that the vehicle is at risk of catching fire and to move the vehicle or extinguish the fire as soon as possible to avoid serious losses.

[0022] 5. Transmit images inside and around the vehicle to the vehicle owner's mobile phone. Through the upgraded in-vehicle Internet of Things system composed of the IPU intelligent processing module, the cellular 5G network module, the Internet of Things card, the ESP8266 module with WiFi function, and the Bluetooth module, etc. in the "Vehicle Control Center", it automatically transmits the images of the surroundings of the vehicle captured by the on-vehicle camera to the vehicle owner in real time (without pushing video information to other mobile phones except the vehicle owner), enabling the owner to understand the surrounding environment of the vehicle's location so as to quickly make a decision to rescue or move the vehicle.

[0023] 6. Control water spraying with a mobile phone. When the vehicle owner receives the vehicle fire information and the technical device of the present invention cannot automatically spray water or has not reached the set water spraying temperature threshold, the vehicle owner can use the small program function of the device of the present invention downloaded on the mobile phone and click on the water spraying nozzle in the high-temperature area on the mobile phone screen to start the water spraying nozzle spraying task. The device of the present invention can directly open the water channel from the water storage container to the water spraying nozzle in the high-temperature area and then start the water pump to spray water on the vehicle to extinguish the fire and reduce the temperature after receiving the water spraying instruction from the vehicle owner's mobile phone through the Internet of Things system composed of the IPU intelligent processing module, the cellular 5G network module, the Internet card, the ESP8266 module with WiFi function, and the Bluetooth module, etc.

[0024] To avoid incorrect operations, this function can only be operated on the vehicle owner's mobile phone. Other mobile phones have no operation permission. To protect the privacy of vehicle owners from being leaked, other associated mobile phones can only receive vehicle fire alarm information and cannot receive in-vehicle and surrounding image information, location information, etc.

[0025] 7. Send a vehicle moving instruction to the intelligent driving vehicle to make the vehicle intelligently move away from the fire source. To implement the emergency intelligent vehicle moving function, the vehicle needs to have an intelligent driving function and an in-vehicle Internet of Things system. The vehicle owner also needs to preset the parking position for emergency automatic vehicle moving on the associated mobile phone. When there is a fire inside or outside the vehicle, the temperature sensor or flame sensor will respond immediately and transmit the detected temperature information and fire information to the "vehicle control center". The "vehicle control center" will automatically send a vehicle moving instruction to the vehicle's on-board computer of the vehicle with intelligent driving function, so that the vehicle can automatically drive away from the high-temperature area. Or when there is a fire igniting on the vehicle itself, it will automatically drive out of the vehicle-intensive area and drive to the open position preset by the vehicle owner in advance to avoid igniting other vehicles. If the vehicle owner does not preset the parking position for emergency vehicle moving in advance, the vehicle cannot move automatically. When the vehicle owner receives the fire information sent by the "vehicle control center", the vehicle owner can temporarily set the parking position and control the vehicle to move to a safe area through the mobile phone.

[0026] II. Signal detection and transmission system.

[0027] The main work of the signal detection and transmission system is to detect and collect in-vehicle and external temperature information, fire information, human body information, water flow information, image information, etc. in real time, and transmit all the detected and collected information to the information intelligent processing IPU module of the "vehicle control center" in a timely manner through the set line and the receiving and transmitting module of these information. This system is mainly composed of a temperature sensor, a flame sensor, a human presence sensor, a water flow sensor, a camera, etc.

[0028] 1. Use the temperature sensor and the flame sensor to detect the temperature change inside and outside the vehicle and the presence of flames in real time.

[0029] In order to obtain accurate real-time temperature and fire conditions, the technical device of the present invention uses both a temperature sensor and a flame sensor as two detection tools to monitor the temperature change and the presence of fire in all directions and areas of the vehicle in real time, ensuring the accuracy of the fire data transmitted to the "vehicle control center", better protecting the vehicle, and minimizing the losses of the vehicle.

[0030] There are many types of temperature sensors. Common ones include infrared temperature sensors, resistance temperature sensors, silicon diode temperature sensors, etc. The present invention applies an infrared temperature sensor to the vehicle fire prevention technical device because the infrared temperature sensor has the characteristics of non-contact, large-area temperature measurement, high accuracy, short response time, long service life, easy fixation, simple manufacturing process, and low cost.

[0031] The flame sensor is particularly sensitive to flames, has high accuracy, a wide detection range, and a long detection distance. The infrared receiving tube in the special wavelength band of the flame sensor is sensitive to the infrared rays of the flame. The detection angle can reach 120° to 180°, and the detection distance can reach 10m to 30m. Using these characteristics, the flame sensor is used to detect whether there is a flame inside and outside the vehicle. When there is a flame, the flame sensor converts the different brightness of the flame into different level signals and transmits them to the "vehicle control center" so that the "vehicle control center" can make timely judgments and take timely actions.

[0032] The function of installing infrared temperature sensors and flame sensors in multiple places on the vehicle is to monitor the temperature changes, the ignition time, and the orientation of the flame in each position and area of the vehicle in real time, so as to transmit the temperature values and fire situation values of each different area of the vehicle to the "vehicle control center" in a timely and accurate manner. The "vehicle control center" automatically judges which area of the vehicle may be in the fire area according to the set values. According to the temperature level, the solenoid valve of the waterway channel leading to the high-temperature area is opened according to the set threshold, and at the same time, the water pump is powered on to start the water pump. Sprinkle water on the surface of the vehicle body in the area to extinguish the fire and cool down according to the set frequency.

[0033] 2. Installation positions, quantities, and functions of the temperature sensor and the flame sensor.

[0034] A total of 26 temperature sensors and flame sensors are installed throughout the vehicle, with 8 distributed on the chassis, 4 of each of the temperature sensor and the flame sensor. There are 4 in the engine compartment, 2 of each of the temperature sensor and the flame sensor. There are 4 in the cockpit of the driver's cab, 2 of each of the temperature sensor and the flame sensor. There are 2 in the trunk, 1 of each of the temperature sensor and the flame sensor. There are 8 around the vehicle body, 4 of each of the temperature sensor and the flame sensor.

[0035] One sensor is installed at the front and rear positions of the four wheels on the vehicle chassis, approximately 15 cm away from the wheels. A total of 8 sensors are fixedly installed, including 4 flame sensors and 4 temperature sensors. The temperature sensors and the flame sensors are installed alternately, and the sensors are connected to the "vehicle control center" with national standard mica fireproof, flame-retardant, and high-temperature-resistant wires. These 8 sensors can monitor the temperature changes in each corner of the vehicle chassis in real time. If there is a fire source anywhere under the vehicle chassis, these sensors will timely transmit the temperature value and the flame information to the "vehicle control center" so that the "vehicle control center" can automatically judge according to the temperature level and the brightness of the flame and enter the next operation procedure, effectively preventing the fire source from all directions on the ground where the vehicle stops from affecting the vehicle.

[0036] Two infrared temperature sensors are installed at the front and rear positions in the engine compartment, for a total of two. One flame sensor is installed at each of the left and right positions, and the installation location is inside the engine compartment hood. Only the temperature-sensitive ends of the temperature sensors and the sensitive ends of the flame sensors are exposed from the inner lining of the hood, but they are basically flush with the inner lining of the hood. There are two temperature sensors and two flame sensors in the engine compartment, which can fully detect and collect the temperature changes and flame conditions in every corner of the engine compartment in real time. It can ensure that any fire in the engine compartment will be monitored in real time, and the temperature information and flame information will be sent to the "vehicle control center" in a timely and accurate manner, so that the "vehicle control center" can command the entire fire extinguishing system to work in coordination, spray water for fire extinguishing in a timely and accurate manner, and protect the safety of the vehicle.

[0037] Two infrared temperature sensors and two flame sensors are installed in the cockpit. One temperature sensor is installed behind the rearview mirror of the driver's seat in the vehicle, and one temperature sensor is installed at the upper middle and rear position of the back row seat. One flame sensor is installed above each of the left and right columns, for a total of four sensors. Installing two infrared temperature sensors and two flame sensors in the cockpit can basically cover every corner of this space. Anywhere a fire breaks out in this space, the temperature sensor or the flame sensor will quickly and accurately capture the location and time of the fire, and send the real-time temperature information at the time of the fire to the "vehicle control center" in a timely manner. The "vehicle control center" will judge that the area near the temperature sensor where the transmitted temperature value reaches the set water spray threshold is the fire area, that is, the fire location. Similarly, the area near the flame sensor that transmits a high-level signal to the "vehicle control center" or the detection direction and range is also the fire area. Whether it is a temperature sensor or a flame sensor, as long as the value transmitted by any one sensor reaches the set water spray threshold, the "vehicle control center" can send an instruction to start all the electrical components on the water channel of the water spray nozzle closest to the flame, open the water channel, and spray water for fire extinguishing in a timely and accurate manner.

[0038] One infrared temperature sensor and one flame sensor are fixedly installed in the middle of the upper part of the vehicle body in the trunk. There are fewer electrical appliances and wires distributed in the trunk, with a small power consumption, and the fire risk coefficient is relatively low compared to other areas of the vehicle. The space shape is relatively open and simple. Installing one temperature sensor and one flame sensor can cover all corners of the entire trunk. Even if there is a fire source in the trunk, it can be monitored in a timely and accurate manner.

[0039] Four infrared temperature sensors and four flame sensors are installed around the outside of the vehicle body. Specifically, one temperature sensor and one flame sensor are installed directly below the vehicle logo in the middle of the vehicle head, one temperature sensor and one flame sensor are installed in the middle position above the recess where the license plate is installed at the vehicle tail, and one temperature sensor and one flame sensor are installed under each of the left and right rearview mirrors outside the vehicle. These four temperature sensors and four flame sensors continuously monitor the temperature changes in the front, rear, left, and right areas outside the vehicle. When a fire source appears or a fire source and heat source approach in any of these four areas, the temperature sensor and flame sensor in that area will promptly transmit the fire location and real-time temperature information to the "vehicle control center". When the flame sensor detects a flame, the "vehicle control center" will continuously push emergency fire messages to the owner's mobile phone and relevant mobile phones, and send real-time images around the vehicle to the owner to achieve visualization of the fire situation. The flame information detected by the external vehicle flame sensor will not trigger the water spraying action of the high-temperature area water nozzles. When the temperature sensor detects that the temperature on the vehicle surface reaches the water spraying threshold temperature of 110°C, the "vehicle control center" will send instructions to all electrical components on the waterway channel of the fire extinguishing water nozzle closest to the flame, open the waterway passage, and promptly spray water accurately to cool down or extinguish the fire in the high-temperature area.

[0040] 3. Application of the human presence sensor in the cockpit of the vehicle.

[0041] The function of installing the human presence sensor in the cockpit of the vehicle is to prevent the "vehicle control center" from misjudging and issuing water spraying instructions when the people in the vehicle use fire sources such as lighters and matches. And only one needs to be installed in the vehicle, and no installation is required in other areas of the vehicle.

[0042] Installing and using a human presence sensor in the cockpit is to prevent misjudgment by the "vehicle control center", and can avoid the situation where when there are people in the vehicle, the normal use of lighters, matches and other ignition devices by the people in the vehicle causes incorrect water spraying, and the fire extinguishing water or antifreeze is sprayed on the people in the vehicle and the interior decoration of the vehicle. For example, when someone in the vehicle uses a lighter to light a cigarette, without the control of the human presence sensor, the sensitive flame sensor will promptly transmit the information of the tiny flame to the vehicle control center. After receiving the flame information, the vehicle control center will issue a water spraying cooperation instruction to the relevant water pumps, solenoid valves, water spraying nozzle control motors, etc. from the water storage container to the water spraying nozzles in the vehicle, triggering the water spraying action of the water spraying nozzles in the vehicle and spraying water or antifreeze into the vehicle. The people in the vehicle will definitely be drenched by the fire extinguishing water or antifreeze, resulting in an undesired and poor user experience. If a human presence sensor is installed in the cockpit, when there are people in the vehicle, the human presence sensor can prevent the flame sensor from transmitting the flame information to the "vehicle control center", and the water spraying nozzles in the cockpit will not spray water. In terms of circuit design, the transmission of the flame information from the flame sensor in the cockpit to the "vehicle control center" is a two-stage transmission, and it needs to pass through the relay controlled by the human presence sensor to transmit the information to the "vehicle control center". When there are people in the vehicle, when the human presence sensor detects and collects the information of the presence of people, the relay is energized. When the relay is energized, the channel for the flame sensor in the vehicle to transmit the flame information to the "vehicle control center" is cut off. At this time, the information of the flame sensor cannot be transmitted to the "vehicle control center", and the water spraying nozzles will not spray water. When there is no one in the cockpit, the human presence sensor cannot detect the information of the presence of people, and the relay will be disconnected. When the relay is disconnected, the lower contact of the relay is combined, and the channel for the flame sensor in the vehicle to transmit the flame information to the "vehicle control center" is connected. That is to say, when someone smokes and lights a fire in the vehicle, or uses a lighter, match and other tools for other purposes to light a fire, it will not cause mis-spraying of the water spraying nozzles. When there is no one in the cockpit, when a flame ignites in the vehicle for the first time, it will be detected by the flame sensor and immediately transmit the flame information to the "vehicle control center". The "vehicle control center" makes the water spraying nozzles spray water to extinguish the fire. The high sensitivity of the flame sensor can play a role at this time, and it can protect the vehicle safety more timely than the temperature sensor. When there are people in the cockpit, only when the temperature detected by the temperature sensor reaches the temperature threshold for opening the water spraying nozzles can the water spraying be triggered. When there is no one in the vehicle, the human presence sensor cannot inhibit the flame sensor from transmitting the flame information to the "vehicle control center", and it can realize the automatic switching of the dual modes of protecting the vehicle safety with the temperature sensor and the flame sensor working together when there is no one in the vehicle and the temperature sensor working alone to protect the vehicle safety when there are people in the vehicle.

[0043] 4. The function of the water flow sensor is to monitor in real time whether there is liquid flow in the local waterway passage, and transmit the water flow information in this section of the water pipe to the "vehicle control center", so that the "vehicle control center" can automatically judge when to switch the fire extinguishing water source liquid, which helps to improve the fire extinguishing and cooling effect.

[0044] 5. Camera

[0045] Install a camera in the cockpit of the vehicle. Together with multiple 360° cameras installed around the vehicle, when the vehicle is in a high-temperature fire situation, it transmits image information of the inside and outside of the vehicle to the vehicle owner, so that the vehicle owner can more accurately understand the real-time situation inside and outside the vehicle even when not on the scene.

[0046] An 180° ultra-wide-angle camera is used inside the vehicle and installed on the top of the cockpit, which can monitor every place in the cockpit.

[0047] III. Sprinkler fire extinguishing and cooling system.

[0048] The function of the sprinkler fire extinguishing and cooling system is when the vehicle is at risk of being ignited, according to the temperature information and flame information transmitted by various sensors, receive the instruction of the "vehicle control center", start a series of sprinkler procedures, and make units such as the water pump, solenoid valve, sprinkler control motor, and sprinkler work in coordination, spray water on the high-temperature area and flame area of the vehicle, so as to achieve the purpose of extinguishing fire and cooling the high-temperature area of the vehicle.

[0049] It is divided into the following items: 1. The hardware part of the sprinkler fire extinguishing and cooling system, the safety analysis of adding fire extinguishing aids and fire extinguishing liquids, the setting of the automatic opening sprinkler valve threshold temperature for sprinkler nozzles in different areas, etc.; 2. The types of fire extinguishing liquids used and the materials connecting each waterway passage; 3. The application scenarios and sprinkler logic of the sprinkler fire extinguishing and cooling system.

[0050] 1. The hardware part of the sprinkler fire extinguishing and cooling system, the safety analysis of the fire extinguishing liquid and the addition of fire extinguishing aids, the setting of the automatic opening sprinkler valve threshold temperature for sprinkler nozzles in different areas

[0051] The hardware part of this system mainly includes: units such as water pump, water storage container, glass water kettle, coolant storage room, coolant circulation pipeline, sprinkler nozzle, sprinkler nozzle control motor, solenoid valve, water flow sensor, circuit, and water pipe connection pipeline.

[0052] 1.1 Water pump. The function of the water pump is when the vehicle is at risk of being ignited, to extract various on-vehicle water source liquids, spray them through the sprinkler nozzles, and extinguish the fire and cool the high-temperature area and flame area of the vehicle.

[0053] There are four water pumps in the technical device of the present invention, including (1) a water storage container water pump; (2) a glass window cleaning water pump; (3) an engine coolant fire extinguishing water pump (different from the coolant circulation water pump); (4) a new energy vehicle power battery pack and charger coolant fire extinguishing water pump (different from the coolant circulation water pump).

[0054] The number of water storage container water pumps is the same as the number of water storage containers equipped on the vehicle. Each water storage container is equipped with 1 water storage container water pump. The number of water storage container water pumps is the same as the number of water storage containers. This can prevent the normal progress of the fire extinguishing and cooling work from being affected when a certain water pump fails to work, and other water storage container water pumps can still pump water for fire extinguishing normally.

[0055] There is only 1 glass window cleaning water pump, 1 engine coolant fire extinguishing water pump, and 1 new energy vehicle power battery pack and charger coolant fire extinguishing water pump.

[0056] 1.2. Water storage container.

[0057] The function of the water storage container is to store water or antifreeze. To ensure the fire extinguishing and cooling effect, when there is a fire inside and outside the vehicle, there is more water source to supply the spray nozzles to spray water on the vehicle for fire extinguishing or cooling. By reasonably using the relatively large gap space of vehicle parts, a certain number of water storage containers are installed on the engine compartment and the vehicle chassis of the vehicle, with a total capacity of more than 10L, storing fire extinguishing water or antifreeze. When the vehicle is at risk of being ignited, the water or antifreeze stored in the water storage container is pumped out by the water pump, pressurized and sprayed out through the spray nozzles to extinguish the fire and cool the vehicle.

[0058] 1.2.1. Size, shape and other configuration characteristics of the water storage container: According to the layout gaps between parts in the vehicle engine compartment and the size and shape characteristics of the gaps in the vehicle chassis, a suitable water storage container is manufactured. The container is made of plastic material with good toughness, high strength and flame retardancy. The total volume of the added water storage containers should be more than 10L. The container is provided with a container opening, a container opening lid, a breathing hole and installation and fixing holes. The lid has the function of sealing the container opening. Opening the lid allows adding water or antifreeze into the container through the container opening. The breathing hole is characterized in that only air can enter and no liquid can overflow from the breathing hole. A water pump, a liquid level alarm and an icing alarm are installed inside the container. The water pump and the two alarms are powered by the power of a spare 12V battery through a fireproof, waterproof and insulated wire. The water pump can pump the water or antifreeze in the water storage container for spraying out through the spray nozzles to extinguish the fire and cool the vehicle. The liquid level alarm emits an alarm sound when the liquid stored in the water storage container is used up or leaked out, prompting to check and add antifreeze. The icing alarm can send icing information to the vehicle control center when the liquid in the container freezes, reminding the vehicle owner to replace the antifreeze matching the environmental temperature in time to avoid affecting the use at a critical moment.

[0059] 1.2.2. Linking method and related configuration from the high-pressure water outlet end of the water pump in the water storage container to the high-pressure water outlet ends of various other liquid pumps for fire extinguishing and to the spray nozzles: The liquid delivery pipe at the high-pressure water outlet end of the water pump passes through the lid of the water storage container and is connected to a solenoid valve. The solenoid valve is powered by the battery through a fireproof wire. The water pipes connected to the outlet end of the solenoid valve and the outlet ends of the solenoid valves of all other pumps immediately following the pumps converge together. At the convergence of the water pipes, a "liquid convergence chamber" with a volume of about 20 - 30 ml is provided. A water flow sensor is installed on the water pipe between the outlet end of the solenoid valve connected to the pump and the "liquid convergence chamber" to monitor whether there is liquid flow in this section of the water pipe after the pump is started. The water flow sensor transmits the liquid flow information to the vehicle control center, and the water flow sensor is powered by the backup battery through the vehicle control center using a fireproof wire. The outlet end of the liquid convergence chamber at the convergence of the water pipes is connected to each spray nozzle on the vehicle by a copper pipe. A solenoid valve is installed between the liquid convergence chamber and the spray nozzle, and the solenoid valve is connected to the vehicle control center by a fireproof insulated wire. The solenoid valve is controlled by the vehicle control center to open or close.

[0060] 1.2.3. Store water or antifreeze in the water storage container.

[0061] To ensure that in any environment, when there is a fire, the water or antifreeze stored in the water storage container can be used to extinguish the fire and cool down the vehicle, and to ensure that the vehicle is not ignited, depending on the geographical range of vehicle use, the antifreeze grades stored are different. For vehicles that have been used in the south all the time, if the lowest temperature in this area in winter is higher than 0°C, purified water can also be stored in the water storage container, but antifreeze with a freezing point of about -10°C can also be stored. For vehicles used in the north, according to the local winter climate, store antifreeze with a freezing point 10°C lower than the lowest temperature. For example, if the lowest winter temperature is -30°C, -40°C antifreeze should be stored, and so on.

[0062] 1.2.4. Add an appropriate amount of fire extinguishing aids.

[0063] Fire extinguishing aids with an auxiliary fire extinguishing effect are added to the antifreeze in the water storage container, which helps to extinguish the fire and cool down the vehicle. For example, adding 7 - 8% NaHCO3 to the antifreeze has an auxiliary flame retardant and fire extinguishing effect. NaHCO3 is soluble in water, and the solution is weakly alkaline. Ordinary antifreeze is also alkaline and will not react with each other, and it has a washing and decontamination effect. It is easily decomposed by heat and begins to gradually decompose into sodium carbonate, carbon dioxide and water above 50°C. The chemical formula is 2NaHCO3 = Δ = Na2C03 + H2O + CO2↑, and it is completely decomposed at 440°C.

[0064] In the process of the thermal decomposition of NaHCO3, a large amount of heat is absorbed, which helps to reduce the damage of the flame to the vehicle surface. The released water and carbon dioxide both have an auxiliary fire extinguishing effect.

[0065] From the comparison experiment of paper burning, the fire extinguishing effect of NaHCO3 is relatively obvious. The experimental method is to evenly sprinkle a layer of fine NaHCO3 powder on an A4 paper laid flat in the air, and not sprinkle on another A4 paper laid flat in the air. Then, light the papers from below with a lighter. The A4 paper without the NaHCO3 powder quickly caught fire and burned out soon. The A4 paper with a layer of fine NaHCO3 powder was not easily ignited. After being lit many times, the flame was very small and the burning speed was also very slow. When it finally slowly went out, only less than 1 / 3 of this A4 paper with a layer of fine NaHCO3 powder burned, and 2 / 3 remained unburned. In similar experiments with other materials, such as plastic and fabric burning experiments, the materials with NaHCO3 powder had an obvious flame retardant effect compared to the materials without NaHCO3 powder.

[0066] 1.3. Glass water kettle, coolant storage chamber, coolant circulation pipeline.

[0067] 1.3.1. Usually, the glass water kettle stores glass water for cleaning the vehicle's front windshield. The stored glass water is about 3 - 4L. The so-called coolant storage chamber and coolant circulation pipeline include the coolant storage kettle and all the pipelines of the entire cooling system, with a capacity of about 5 - 7L. Usually, this coolant circulates back and forth in the cooling pipeline to cool down the engine of a fuel vehicle, hybrid vehicle, range extender vehicle, or the power battery pack and charger of a new energy vehicle. When the vehicle is at risk of being ignited, the glass water and coolant stored in these containers will be pumped out by the water pump, pressurized, and sprayed through the pipeline and nozzle onto the vehicle's flame area and high-temperature area to extinguish the fire and cool down the vehicle. Therefore, these containers are also classified as a part of the fire extinguishing system.

[0068] 1.3.2. Safety experiment and analysis of the fire extinguishing liquid

[0069] The fire extinguishing liquids used in the present invention include water or antifreeze, windshield washer fluid, engine coolant, coolant for new energy vehicle power battery packs and chargers, etc. These liquids all contain a certain amount of flammable substance ethylene glycol more or less. According to different usage seasons and regions, most of the contents are between 10% and 50%, generally not exceeding 50% (the content of ethylene glycol in the coolant used by vehicles in a few extremely cold regions in winter exceeds 50%). It is known through experiments that it is safe to use these liquids to extinguish fires and cool down vehicles. These liquids are composed of multiple components, and the main components are deionized water, antifreeze, and other additives. The antifreeze in the antifreeze mainly contains ethylene glycol. The ignition point of ethylene glycol is 418°C. Ethylene glycol without water can be ignited, but its combustion characteristics are relatively mild. Ethylene glycol with a large amount of water added will not be ignited. Generally, the addition amount of ethylene glycol in -20°C antifreeze does not exceed 38.5%, and the addition amount of ethylene glycol in the coolant used in an environment of -35°C also does not exceed 50%. More than half of the water and other components make the antifreeze non-flammable. In the combustion test, a flame gun with a flame of about 1000°C was used to directly spray and burn the antifreeze containing 60% ethylene glycol continuously for more than 30 minutes, and there was no combustion phenomenon. It is known through experiments that it is safe to use the above-mentioned liquids containing ethylene glycol to extinguish fires and cool down vehicles at critical moments.

[0070] 1.4. Nozzle.

[0071] 1.4.1. The function of the nozzle is to spray water on the high-temperature area and flame area of the vehicle, so that the vehicle can be extinguished and cooled down. The most important function of the technical device of the present invention is that when the vehicle is at risk of being ignited, the fire extinguishing water source liquid is pressurized by the water pump and sprayed onto the flame area or high-temperature area of the vehicle through the nozzle, so as to achieve the purpose of extinguishing the fire and cooling down the vehicle, protecting the safety of the vehicle and reducing the loss of the vehicle. When there is a flame inside and outside the vehicle, the technical device of the present invention automatically pressurizes various water source liquids carried on the vehicle by the water pump and accurately sprays water on the flame area or high-temperature area through the nozzle to extinguish the fire and cool down the vehicle, greatly avoiding the vehicle from spontaneous combustion or being ignited. Without the nozzle, it is impossible to achieve uniform water spraying on the high-temperature area of the vehicle.

[0072] 1.4.2. Installation position and quantity of the nozzle:

[0073] The installation position and quantity of the nozzle are determined according to the fire risk degree of different areas of the vehicle and the spraying distance and range of the nozzle. The installation position and quantity of the nozzle are reasonably arranged in different areas. In principle, it is necessary to cover the entire interior and exterior surface of the vehicle, and effectively utilize the limited on-vehicle water resources to extinguish the fire and cool down the vehicle.

[0074] The specific installation position and quantity of the nozzle are as follows:

[0075] A total of 13 water spray nozzles are installed on the whole vehicle (the density can be appropriately increased). There are 2 on the chassis, 4 in the engine compartment, 2 in the cockpit, 1 in the trunk, and 4 around the vehicle body.

[0076] 2 water spray nozzles are installed on the vehicle chassis. One is fixedly installed near the center point of the axis of the two front wheels, and the other is fixedly installed near the center point of the axis of the two rear wheels. These two water spray nozzles are folding nozzles. Usually, they are folded and hidden in the depression of the chassis, and are not easily scratched or knocked, playing a role in protecting the water spray nozzles. When there is a fire under the vehicle chassis, the "vehicle control center" issues an instruction to the control motor of the chassis water spray nozzle, so that the folding rod drives the water spray nozzle to rotate downward by 90°, making the folding rod perpendicular to the vehicle chassis. The water spray nozzle rotates to a position 5 - 8 cm below the lower plane of the vehicle chassis and sprays water in a rotating manner to extinguish the fire.

[0077] One water spray nozzle is installed in each of the front, rear, left, and right directions in the engine compartment, for a total of 4. They are evenly distributed and fixedly installed, without the need for folding or telescopic hiding.

[0078] 2 water spray nozzles are installed in the cockpit. One is installed inside the main driver's rearview mirror bracket in front of the top of the main driver's seat. This water spray nozzle is telescopic and hidden. Usually, it is retracted and hidden inside the main driver's rearview mirror bracket. When there is a fire in the cockpit, the control motor of the water spray nozzle drives the water spray nozzle to extend out of the main driver's rearview mirror bracket in the vehicle to spray water and extinguish the fire. After completing the water spraying task, the control motor of the water spray nozzle drives the water spray nozzle to retract to its original position, and the outlet of the water spray nozzle is automatically covered and blocked by the same material as the main driver's rearview mirror bracket to ensure the aesthetics of the cockpit. The other is installed at the top position above the rear row seats. This water spray nozzle is also telescopic and hidden. Usually, it is retracted and hidden inside the decorative material on the roof. When there is a fire in the cockpit, the control motor of the water spray nozzle drives the water spray nozzle to extend out of the hole reserved in the decorative material to spray water and extinguish the fire. After completing the water spraying task, it is driven by the control motor to retract to its original position, and the outlet of the water spray nozzle is automatically covered and blocked by the same material to ensure the overall aesthetics of the cockpit.

[0079] One water spray nozzle is fixedly installed in the middle of the upper part of the vehicle body in the trunk, between the temperature sensor and the flame sensor. The space shape in the trunk is relatively simple. Installing one water spray nozzle can cover all corners of the entire trunk. Even if a fire breaks out in the trunk, it can spray water in time and accurately at the initial stage of the fire to extinguish the flame.

[0080] Four water spray nozzles are installed around the outside of the vehicle body, in the same distribution positions as the external temperature sensor and the flame sensor of the vehicle body. They are fixedly installed in the middle between the external temperature sensor and the flame sensor of the vehicle body, and are fixedly installed side by side with the vehicle body temperature sensor and the flame sensor. The installation positions on the front, rear, left, and right sides of the vehicle are as follows: One is installed directly below the vehicle logo in the middle of the front of the vehicle head; one is installed in the middle position directly above the recess where the license plate is installed at the rear of the vehicle; for the left and right sides of the vehicle, one water spray nozzle is installed in each of the installation brackets of the left and right exterior rearview mirrors of the vehicle. These four water spray nozzles are hidden inside the vehicle body, and the installation method is the same as that of the reverse radar or the vehicle-mounted camera. These four water spray nozzles are all retractable and hidden type. When water spraying is required, the water spray nozzle control motor drives them to extend from the hidden position to spray water for fire extinguishing and temperature reduction. After the work is completed, they retract to their original positions, and the water spray nozzle outlets are blocked with materials of the same material and color as the vehicle body material at their positions.

[0081] 1.4.3. Setting of the automatic opening water spray valve temperature for water spray nozzles in different areas

[0082] According to the temperature environment of different areas of the vehicle, the material characteristics of components, and the degree of fire risk, reasonably set the automatic opening water spray valve temperature of the water spray nozzles in each area. In the present invention, it plays a crucial role in the effect of actively extinguishing fires on the vehicle using water spray nozzles. If the set automatic opening water spray valve temperature is too low, it may cause mis-spraying. Once mis-sprayed, it not only has no practical working significance but also affects the vehicle use experience. If the set automatic opening water spray valve temperature is too high, it may miss the best fire extinguishing and temperature reduction opportunity, affecting the fire extinguishing and temperature reduction effect, or failing to play the due role of fire extinguishing and temperature reduction. The following are the set values of the automatic opening water spray valve temperature for the water spray nozzles in five areas of the vehicle.

[0083] The set value of the automatic opening water spray valve temperature for the water spray nozzles under the vehicle bottom (under the chassis) is 90 °C, the set value of the automatic opening water spray valve temperature for the water spray nozzles on the outer surface around the vehicle body is 110 °C, the set value of the automatic opening water spray valve temperature for the water spray nozzles in the engine compartment is 110 °C, the set value of the automatic opening water spray valve temperature for the water spray nozzles in the cockpit of the driver's cab is 100 °C, and the set value of the automatic opening water spray valve temperature for the water spray nozzles in the trunk is 100 °C.

[0084] 1.4.3.1. The temperature detected and collected by the temperature sensor at the bottom of the vehicle is generally the outdoor natural temperature or the surface temperature. Even in the hottest extreme high-temperature situation, it generally does not exceed 70°C. If the temperature detected by the temperature sensor at the bottom of the vehicle reaches or exceeds 90°C, it indicates that there is a small flame burning under the vehicle chassis. It is just in the initial stage of combustion or there is a fire source near the vehicle chassis. If it is not extinguished in time or watered down, in the case of sufficient combustibles under the vehicle, there is a high probability that the fire will grow in a very short time, then get out of control, and finally ignite the vehicle. If the opening and spraying threshold temperature of the water nozzles at the bottom of the vehicle is set too high and there is a relatively high temperature radiation to the temperature sensor at the bottom of the vehicle, it may be that the fire has grown and the best fire extinguishing opportunity has been missed. Using the limited water source on the vehicle may not be able to extinguish the fire source and cannot play a role in extinguishing the fire. Therefore, it is more reasonable that the opening and spraying threshold temperature of the water nozzles on the vehicle chassis is 90°C.

[0085] 1.4.3.2. Compared with other areas of the vehicle, the engine compartment of the vehicle has the highest risk of fire, with both the risk of spontaneous combustion and the risk of being ignited. Most of the plastic parts, rubber parts, wire insulation layers and even paint surfaces in the engine compartment are combustibles, generally made of ABS, polypropylene, PE, PVC materials. The ignition points of these materials are between 200°C and 420°C. Without being ignited by an open flame, they generally do not burn spontaneously. Using these materials extensively in automobiles is relatively safe. However, when the fuel engine works for a long time, this area is often at a high temperature of 80°C - 90°C and is very dry. These plastic parts, rubber parts, wire insulation layers, paint surfaces and the oil stains on the engine surface will all become potential risks of vehicle fires. In such a situation, if the vehicle wire is short-circuited and catches fire, or there is an external fire source, a small flame may ignite these plastics, rubber parts, wire insulation layers, etc., resulting in the occurrence of a vehicle fire. Because the temperature of a small flame is also 500°C - 650°C, which exceeds the ignition points of these materials, so these materials will be ignited.

[0086] It is reasonable to set the threshold temperature for the water spray nozzle in the vehicle engine compartment (or the front engine compartment of an electric vehicle) to start spraying water at 110°C. When the fuel engine is working, due to the cooling effect of the internal coolant circulation of the engine, the temperature in the engine compartment is normally not higher than 90°C under normal circumstances. The main component of the coolant is water, and the boiling point of water is 100°C. However, the optimal working temperature of the engine is about 90°C. Therefore, the circulating temperature of most engine coolants is set at 90°C. The coolant pump pressurizes the closed loop between the engine and the radiator to cool the engine by circulation. That is, when the engine is working, the outer surface temperature of other parts except the exhaust pipe does not exceed 90°C. After being cooled by the flowing natural-temperature air, this temperature is then dissipated into the engine compartment. Under the combined action of the heat dissipation through the gaps in the engine compartment and the heat transfer of the engine compartment metal, the temperature in the engine compartment generally does not exceed 85°C. When the outside temperature is 42°C in summer and the vehicle is stationary but the engine is continuously working, the measured highest temperature in the engine compartment is 82°C. When the outside temperature is 9°C in winter and the vehicle is stationary but the engine is continuously working, the measured temperature in the engine compartment is about 67°C. If the temperature in the engine compartment reaches 100°C, it indicates that it is no longer in a normal state. Once it reaches 110°C, there must be a fire somewhere. Just in the initial stage of the fire, the flame range is very small and the fire is not intense. This is the best time to extinguish the fire, and with a small amount of water, the flame can be extinguished. If the threshold temperature for the fire extinguishing water spray nozzle to start spraying water is set too high and the water is sprayed to extinguish the fire after the temperature rises, the flame may have become larger, and the limited water source carried on the vehicle may not achieve the fire extinguishing effect.

[0087] 1.4.3.3. The driver's cab and cockpit are connected to the engine compartment, with only a very thin iron plate in between. There are a large number of decorative parts such as chemical fiber products, plastic and rubber products, sponge, leather, and artificial leather, all of which are combustible. There are also many buttons, electrical components, and various wires, etc., with a certain risk of electrical short circuit and fire. Storing flammable and explosive items such as lighters in the vehicle, and having items such as glass bottles, plastic bottles, and glasses in the vehicle that can focus sunlight and generate heat may all cause the combustion of combustibles in the vehicle, with a certain risk of spontaneous combustion and a risk of being ignited, but not as large as the risk in the engine compartment. There are not many electrical components and few electrical wires in the trunk, so the risk of spontaneous combustion is the smallest, but it may also be ignited due to the flammability of the internal decoration materials.

[0088] The ignition points of the interior decoration parts of the vehicle are not very high. The ignition point of chemical fiber products is 150°C, the ignition point of leather is 130°C, the ignition point of artificial leather is 200°C - 300°C, the ignition point of sponge is 150°C, the ignition point of plastic is 280°C, and the ignition point of rubber products is 160°C. The starting temperature of the water spray for the fire extinguishing water spray nozzles in the driver's cab and cockpit must not exceed the ignition points of these items, and at the same time, it must not be lower than the extreme temperature in the vehicle when exposed to the sun for a long time in summer.

[0089] It is reasonable to set the starting water spraying temperature of the water spray nozzles inside the cockpit and the trunk at 100°C. Through actual measurement, in the 38°C weather in summer, after the vehicle has been exposed to the sun outdoors for 4 hours, the temperature inside the vehicle cockpit does not exceed 73.6°C. In the 42°C outdoor environment, after the vehicle has been exposed to the sun for 3 hours, the temperature inside the vehicle cockpit does not exceed 78.1°C. Practice has proved that the temperature inside the vehicle generally does not exceed 80°C, and in extreme cases, it will not exceed 90°C. If the temperature sensor inside the cockpit detects that the temperature inside the vehicle reaches 100°C, there must be a fire somewhere inside the cockpit at this time. Just in the initial stage of the fire, the flame range is very small and the fire is not intense. This is the best time to extinguish the fire, and with a small amount of water, the flame can be extinguished. If the threshold temperature for the water spray nozzle to start spraying water is set too high and the water is sprayed to extinguish the fire after the temperature rises, the flame may have become larger, and the limited water source carried on the vehicle may not achieve the fire extinguishing effect. Additionally, it should be noted that smoking inside the vehicle will not trigger the water spray nozzle to spray water. Although the temperature of a slowly burning cigarette butt is 200°C - 300°C, it has little impact on the temperature inside the entire cockpit, and there is no smoke sensor inside the cockpit either. Therefore, smoking inside the vehicle will not cause the fire extinguishing water spray nozzle to misspray.

[0090] 1.4.3.4. The set starting water spraying temperature of the water spray nozzles on the outer surface around the vehicle body is 110°C.

[0091] Generally, the reason for the abnormal increase in the temperature on the outer surface around the vehicle is that there is a burning fire source near the vehicle and the fire is intense. Judging from experience, this fire source is very likely a neighboring vehicle that is burning. In a dense area where multiple cars are parked at a station, the distance between adjacent vehicles is generally between 1m and 1.5m. When a car is burning vigorously, the flame temperature may reach 700°C - 800°C, and the temperature radiated to the surrounding vehicles can reach up to about 400°C at most, making it very likely to ignite the surrounding vehicles. The vehicles that are ignited are those that have not been driven away in time, as well as vehicles without flame retardant functions and vehicles that cannot automatically spray water to extinguish the fire and cool themselves. Generally, it takes 10 - 20 minutes for a vehicle to go from a small fire to a fierce large fire. If it can be detected early that a neighboring vehicle is burning and the vehicle can automatically spray water for self - rescue, it can definitely not be ignited within 30 minutes.

[0092] The ignition point of natural rubber is close to 130 °C. However, according to different usage requirements, many other different substances are added during processing and production. While changing some properties of rubber products, the ignition point of rubber products is also changed. Generally, the ignition point of rubber products is above 160 °C, and the ignition point of vehicle tires is about 350 °C. The ignition point of plastic parts used inside and outside the vehicle is 280 °C, and the ignition point of the paint on the vehicle body exterior is 200 °C. The ignition points of all combustibles exposed on the vehicle are above 110 °C. Therefore, it is relatively reasonable to set the starting temperature of the water spray of the water spray nozzles around the vehicle body to 110 °C. This temperature does not cause much damage to the vehicle surface and will not cause premature water spraying when the starting temperature of the water spray nozzles is set relatively low, resulting in premature consumption of the limited water source reserve. If the vehicle is not moved away in time and the fire of the adjacent self-igniting vehicle becomes larger, the fire extinguishing water source liquid has been exhausted, and the vehicle may still be ignited. Spraying water on the vehicle to cool it down starting at this temperature and keeping the vehicle surface temperature below the lowest ignition point of the exterior parts can ensure that the vehicle will not be ignited for a long time (usually 30 minutes).

[0093] 1.5. Water spray nozzle control motor. The function of the water spray nozzle control motor is to send the usually hidden water spray nozzles to the specified positions when water spraying is required. Due to the overall aesthetic requirements of the vehicle, multiple water spray nozzles installed inside the vehicle cockpit, in the trunk, and around the exterior of the vehicle are generally hidden in the interlayer between the outer metal layer and the inner decorative layer. The surface of the holes hiding the water spray nozzles is covered and decorated with the same material as around the holes. When the vehicle is likely to be ignited, the "vehicle control center" applies a positive voltage to the water spray nozzle control motor through a relay. The water spray nozzle control motor sends the water spray nozzles out from the hidden places to the specified positions to prepare for water spraying by the water spray nozzles. After the water spraying ends, the vehicle control center applies a reverse voltage to the water spray nozzle control motor. Driven by the water spray nozzle control motor, the water spray nozzles retract back to the original hidden positions, and the holes are automatically covered.

[0094] The water spray nozzles installed on the vehicle chassis are hidden in a folded form. When water spraying is required, the water spray nozzles are driven by the water spray nozzle control motor to rotate downward by 90° from the folded state and extend about 5 - 8 cm below the vehicle chassis plane before starting to spray water. The water spray nozzles installed in the engine compartment can be directly fixedly installed without a water spray nozzle control motor.

[0095] 1.6. Solenoid valve. The function of the solenoid valve is to be controlled by the "vehicle control center" to open or close the water passage according to requirements. In order to rationally and efficiently utilize limited water resources to extinguish fires and cool down the vehicle, in the automotive fire prevention technology device invented by our company, each water passage between the water pump and the water spray nozzle is not isolated, but is connected to other water passages to form a water passage network. They are interconnected. In the water passage between the water pump and the water spray nozzle, there is a "liquid convergence chamber". The outlet pipeline of the fire extinguishing water pump in the present invention is connected to this "liquid convergence chamber". That is to say, the liquid pumped out by each fire extinguishing water pump from each liquid storage container of the water source (referring to the water storage container, glass water kettle, coolant storage container, etc.) for extinguishing fires and cooling down the vehicle has to flow through this "liquid convergence chamber". Each water spray nozzle is connected to this "liquid convergence chamber" by a water pipe (usually a copper pipe). Under the continuous pressure provided by the water pump, the fire extinguishing liquid starts from the liquid convergence chamber and is distributed to the water spray nozzles in the high-temperature area and sprayed out.

[0096] The advantage of this pipeline design is that the liquid pumped out by each fire extinguishing water pump can be transported to each water spray nozzle through pipeline connection control, which is the most optimized water connection method. However, if there is no coordinated control of the solenoid valves in each water passage, when a water pump starts to pump water, not only will all the water spray nozzles spray water, but also the water will flow back into other liquid storage containers through the liquid convergence chamber, which not only wastes limited water resources but also fails to achieve the purpose of extinguishing fires and cooling down the vehicle. By installing a normally closed solenoid valve between the water flow pipeline of each water pump and the "liquid convergence chamber" and between the "liquid convergence chamber" and each water spray nozzle, this problem can be solved easily. Each solenoid valve is controlled by the "vehicle control center" and is usually in the closed state (only the solenoid valve leading to the glass window is a normally open solenoid valve, which is usually in the open state and is controlled by the "vehicle control center" to be powered off and closed when water spraying is required for fire extinguishing and cooling down). When a fire breaks out in a certain area of the vehicle, the "vehicle control center" only allows the solenoid valve between the working water pump and the liquid convergence chamber to open, and at the same time only allows one solenoid valve between the liquid convergence chamber and the water spray nozzle in the high-temperature area to open (if the temperatures in two areas both reach the water spray threshold temperature, the solenoid valves between the liquid convergence chamber and the water spray nozzles in the high-temperature area open and close alternately, and the two water spray nozzles spray water alternately. If the two water spray nozzles spray water simultaneously, it may not reach the set spraying distance due to insufficient water pressure). Other solenoid valves are in the closed state.

[0097] 1.7. Water flow sensor. The function of the water flow sensor is to monitor in real time whether there is liquid flow in the water pipeline from the water pump to the liquid convergence chamber, and transmit the water flow information in this section of the water pipeline to the "vehicle control center", which is the information source basis for the "vehicle control center" to automatically judge when to switch the fire extinguishing water source liquid. Its main function belongs to the signal system. Different from the installation methods of the temperature sensor and the flame sensor, the body of the water flow sensor is serially installed in the water pipeline, and the installation position is between the water pump and the "liquid convergence chamber". The installation order of the important components in the water pipeline is: water pump → solenoid valve → water flow sensor → liquid convergence chamber → solenoid valve → spray nozzle. It is installed at the rear end of the water pump and the solenoid valve (the solenoid valve near the water pump). The high-pressure liquid pumped out by the water pump flows through the solenoid valve, then through the water flow sensor and into the liquid convergence chamber, then through the solenoid valve again, and finally sprays out through the spray nozzle. The water-passing part of the body of the water flow sensor itself is also part of the water pipeline system.

[0098] 1.8. Wiring and water pipelines. The wiring and water pipelines in the present invention play a role of connection and intercommunication. They are respectively like the nerves and blood vessels of the human body, connecting the individual components with different functions into a functional whole that can work in coordination with each other. In order to enable the device to work normally in both high-temperature and low-temperature environments, the wiring material in the present invention uses national standard mica fireproof, flame-retardant and high-temperature-resistant wires to connect each electrical component to the "vehicle control center", ensuring that the instructions from the "vehicle control center" can reach each electrical component unimpeded in harsh environments. The water pipelines mainly use copper pipes with high and low temperature resistance, high strength, strong plasticity, impact resistance, aging resistance and corrosion resistance. At the installation location of the spray nozzle, a silicone hose with high and low temperature resistance and corrosion resistance is used at the movable and stretching part connecting the spray nozzle and the copper pipe to make a flexible connection between the spray nozzle and the copper water pipe. One end of the supporting silicone hose is connected to the copper pipe, and the other end is connected to the spray nozzle, ensuring that the entire device can work stably, flexibly, sealed and reliably.

[0099] 2. Types of fire extinguishing liquids and materials for connecting each water channel.

[0100] 2.1. The types of fire extinguishing liquids used include purified water or antifreeze, windshield washer fluid, engine coolant, coolant for power battery packs and chargers, etc.

[0101] Since the water storage containers for fire extinguishing are added by making use of the limited space on the vehicle, restricted by the space, the volume of a single water storage container cannot be too large. They are located in the engine compartment and the vehicle chassis, and the number is generally 2 or 3. The total capacity of several water storage containers cannot be less than 10 liters, and several water storage containers for fire extinguishing can be interconnected. If interconnected, many components can be saved. Only one water pump needs to be installed in the lowest-positioned water storage container, and the liquid in several containers can be pumped out at one time. However, for safety reasons, generally each water storage container is independent. The independent water storage containers are respectively named Water Storage Container 1, Water Storage Container 2, Water Storage Container 3, etc., and a water pump is installed at the lowest part of each water storage container. The high-pressure water outlet end of each water pump is connected to the "liquid convergence chamber". An electromagnetic valve and a water flow sensor are installed in sequence between the water pump and the "liquid convergence chamber". Independent water storage containers use more components in the device, but they are relatively safer and can avoid the situation where several water storage containers fail collectively due to the damage of one water pump or the leakage of a certain water storage container in the interconnected form.

[0102] In order to extinguish the fire in the budding state by the method of spraying water when the fire just starts to burn inside and outside the vehicle and achieve a good fire extinguishing and cooling effect, in many cases, the cleaning liquid for glass windows, the coolant for the fuel engine, and the coolant in components such as the power battery pack and the charger of new energy vehicles also need to be sprayed through the spray nozzles together to extinguish the fire and cool down the vehicle. On ordinary vehicles, the total amount of these three liquids is at least more than 10L, and in total, there are as much as 15 - 20L. Plus the 10L of water stored in the added water storage containers, the total of the four is more than 20 liters. In addition, the characteristic of this vehicle fire prevention technology is real-time monitoring, and it can be detected by this device in time when the ignition point is just ignited, and water is sprayed in time to extinguish the fire or cool down the vehicle. More than 20 liters of fire extinguishing liquid can basically ensure that the vehicle is not ignited. According to the set spraying frequency and water spraying volume, it takes 30 to 40 minutes for the more than 20 liters of liquid to finish spraying. During this period, it is sufficient to attract the attention of the vehicle owner, related persons, and people around the vehicle. Coupled with the assistance of the automatic alarm and automatic vehicle moving functions, the vehicle loss can be minimized to the greatest extent.

[0103] 2.2. Connect the water channels between each fire extinguishing water pump and the spray nozzles with copper pipes.

[0104] In order to completely extinguish the fire and cool down the vehicle in case of a fire, and to prevent the surface of the vehicle in the high-temperature area from being ignited for a long time, it is necessary to make full use of the water stored in the water storage container, or the coolant of antifreeze, windshield washer fluid, fuel engine coolant, new energy power battery pack, etc. to extinguish the fire and cool down the vehicle. Copper pipes have the advantages of high strength, good toughness, good durability, fire resistance, resistance to high and low temperatures, corrosion resistance, etc. Copper pipes are used to connect the high-pressure water outlet end of the water pump that extracts these liquids for fire extinguishing to the "liquid convergence chamber", and the "liquid convergence chamber" to each water spray nozzle according to the design standard, forming a reliable and sealed water channel that can be used with the vehicle for a long time. And a silicone water pipe is firmly connected between the end of the copper pipe and the water spray nozzle that can stretch or fold, playing an important role when the vehicle is in danger of catching fire.

[0105] 3. Application Scenarios and Spraying Logic of the Sprinkler Fire Extinguishing and Cooling System

[0106] When an item burns in a certain area inside or outside the vehicle, a flame will ignite in this area and cause the surrounding air temperature to rise. The on-vehicle flame sensor and temperature sensor installed in this area will immediately detect these changes, and convert the flame changes and temperature changes in this area into electrical signals of different magnitudes, and transmit them to the "vehicle control center" of the device of the present invention in a timely manner through wires. When the "vehicle control center" determines that this area is a flame high-temperature area according to the set starting spraying flame threshold and temperature threshold, it will open the solenoid valve of the water channel from the water pump to the water spray nozzle in this flame high-temperature area, open the water channel leading to the water spray nozzle in this area, and get ready to extinguish the fire and cool down this area. At the same time, keep the solenoid valves of other water channels closed, so that the water channels leading to other areas remain closed, in order to accurately extinguish the fire and cool down the high-temperature area using limited water resources.

[0107] First, start the water pump in the water storage container 1 to extract the stored water or antifreeze in the water storage container 1. After the liquid is pressurized by the water pump, it passes through the water pipe of the water channel to provide high-pressure water to the water nozzle installed in the high-temperature area. The high-pressure water is rotated and sprayed out through the water nozzle to extinguish the fire and cool down the high-temperature area of the vehicle. When the water in the water storage container 1 is sprayed out, the water level alarm installed in the water storage container 1 transmits the signal that there is no water in the container to the "vehicle control center" through the fireproof wire. The water flow sensor between the water pump in the water storage container 1 and the "liquid convergence chamber" also sends the "vehicle control center" information that there is no water flow in this section of the waterway. When the "vehicle control center" receives any of these two messages, it will automatically close the water pump in the water storage container 1 and the electromagnetic valve between the water pump and the liquid convergence chamber. The reason for closing the water pump is to prevent the water pump from idling and burning, avoid short circuit fire caused by water pump burning, and reduce power consumption. The reason for closing the solenoid valve is to prevent the high-pressure water from flowing back into the water storage container 1 through the liquid convergence chamber after other water pumps are turned on. In that case, the water pressure at the water nozzle will be greatly reduced, and the water spray coverage range set by the water nozzle will not be reached, and the corresponding effect of protecting vehicle safety will not be achieved. Then, the solenoid valve between the water pump in the water storage container 2 and the liquid convergence chamber and the water pump in the water storage container 2 are energized, and the solenoid valve between the water pump in the water storage container 2 and the liquid convergence chamber and the water pump in the water storage container 2 are turned on, and the water pump in the water storage container 2 is started, and the high-pressure liquid is continued to be supplied to the high-temperature area water nozzle for spraying. According to the above process, when the liquid in water storage container 2 is consumed, the liquid in water storage container 3 continues to be consumed. When the liquid in water storage container 3 is consumed, the normally open solenoid valve of the water channel leading to the glass window is energized to close it, and the normally closed solenoid valve of the water channel leading to the liquid gathering chamber is energized to open it, opening the water channel from the glass window cleaning pump to the water nozzle in the high-temperature area, energizing the glass window cleaning pump, starting the glass window cleaning pump, drawing glass window cleaning liquid from the glass kettle, and continuing to supply the water nozzle in the high-temperature area to spray water to extinguish the fire and cool the vehicle.

[0108] When the windshield washer fluid is consumed, the corresponding solenoid valves and water pumps are switched on and off in turn in the same logical sequence as above, the fuel engine coolant fire extinguishing water pump is turned on, and finally the new energy battery pack coolant fire extinguishing water pump is enabled, until all the on-board liquids that can be automatically sprayed by the device of the present invention are consumed, so as to extinguish the fire and cool down the vehicle, and extend the time that the vehicle is not ignited as much as possible.

[0109] If the engine compartment, cockpit, trunk, or vehicle chassis catches fire, the main focus is on extinguishing the fire. Continuously spray high-pressure water or other fire-extinguishing liquids directly onto the flames, while using vehicle cooling as a secondary measure. If an external fire source ignites outside the vehicle, such as when an adjacent vehicle is burning and there is a risk of the fire spreading to this vehicle, the main focus should be on cooling the vehicle. In this case, "intermittently" spray water on the high-temperature areas of the vehicle body to prevent the vehicle body from being ignited, with fire extinguishing as a secondary measure. Since the external fire source may be large, the limited water resources on the vehicle may not be sufficient to extinguish the fire. Perhaps the fire source is far from the vehicle, and only heat is radiating to the vehicle body. The vehicle's water nozzles cannot reach the fire source, so the water cannot extinguish the fire, and this would prematurely consume the limited on-vehicle water resources, shortening the protection time for the vehicle.

[0110] When there is an external fire source outside the vehicle that may ignite the vehicle, "intermittently" spray water on the outer surface of the high-temperature areas of the vehicle. The main reason is that the vehicle's water resources are limited, and they must be used rationally to ensure that the vehicle will not be ignited for a relatively long time. Of course, the longer this time length, the better. However, due to the limited on-vehicle fire-extinguishing water resources, considering all factors, the designed time length should be at least between 20 and 30 minutes and should not exceed 40 minutes. If the time from the start of water spraying to the consumption of all on-vehicle fire-extinguishing water resources is too long, the water spraying volume per unit time must be reduced, or the time interval between two water sprayings must be extended. In this case, when the fire is intense, it may cause greater damage to the vehicle. There is a risk that due to a small water spraying volume or a long interval time, the cooling effect may not be achieved, and the vehicle may be ignited. If, when a sudden high-temperature fire source is initially detected in a certain area around the vehicle, all the vehicle's water resources are quickly and continuously sprayed out, and the external fire source has not been extinguished, within a few minutes during and after the water spraying process, because the temperature of the vehicle body surface is temporarily low and below the ignition points of plastic parts, rubber parts, paint surfaces, etc., the vehicle will not be ignited. As the intensity of the external fire source continues to increase and heat continuously radiates to the vehicle body surface, the temperature that has dropped on the vehicle body surface rises again. The water source has been consumed, and the high-temperature areas of the vehicle body cannot be effectively cooled. When the surface temperature of the high-temperature areas of the vehicle body reaches the ignition point of the combustibles on that surface, the vehicle will be ignited.

[0111] Within different temperature ranges, reasonably designing different water spraying frequencies is of great significance for using limited on-vehicle water resources (the on-vehicle water resources mentioned here include all liquids carried on the vehicle that can be used for automatic fire extinguishing, such as on-vehicle stored water, stored antifreeze, windshield washer fluid, engine coolant, power battery pack coolant, etc.) to protect the vehicle from being ignited by external fire sources within 30 minutes. When there is a fire in the engine compartment, cockpit, trunk, and vehicle chassis, and flames appear, the main focus is on extinguishing the fire, with temperature reduction as a secondary measure. Spraying is carried out in two stages. As long as the fire sources inside and under the vehicle can be extinguished by the water or liquid sprayed from the water spray nozzles, a vehicle fire can be avoided. That is, when the temperature sensors or flame sensors installed in these areas detect the temperature in a certain area among the above four areas reaching the threshold temperature at which the water spray nozzles automatically open for spraying, or when the flame sensors detect the appearance of flames, a series of related components such as water pumps, solenoid valves, water spray nozzle control motors, and water spray nozzles will automatically start the set working procedures and cooperate automatically to spray water on the high-temperature area for fire extinguishing and temperature reduction. For example, the set temperature threshold for the automatic opening and spraying action of the water spray nozzles in the cockpit is 100°C. When the temperature sensor in the cockpit detects that the temperature in this area rises to 100°C, or when the flame sensor in this area detects the appearance of flames, and the signal intensity received by the "vehicle control center" reaches the spraying threshold, the water spray nozzle control motor in this area will be started, causing the water spray nozzles to extend from their original hidden positions, opening the solenoid valve for this waterway channel, closing the solenoid valves for other waterway passages, automatically starting the water pump in water storage container 1. The water or antifreeze in water storage container 1 is pressurized by the water pump and sprayed continuously and non-stop through the water spray nozzles installed in the cockpit. After the liquid in water storage container 1 is consumed, the water pump in water storage container 2 is automatically started, and the liquid in water storage container 2 is used for spraying water to extinguish the fire and reduce the temperature. Then, the water pump in water storage container 3 is started. The liquid in these several water storage containers is about 10 liters, and the water spraying volume is 1L / min. The liquid in several water storage containers can continuously supply the water spray nozzles in the cockpit for spraying for about 10 minutes, and generally, it can extinguish the flames in the cockpit. Under the rotating spraying of the water spray nozzles, it is evenly sprayed on the fire source area in the vehicle's cockpit, wetting the top of the vehicle, several seats, the center console, the inner side of the doors, the floor, etc. inside the vehicle. While extinguishing the fire source, these interior decoration materials that can be ignited when dry will not burn for a short time due to being wet by water, which can prevent the entire vehicle from being ignited by a tiny fire source.When the feed pump and the spray nozzle work together, the set water spray flow rate is generally 1 L / min. That is to say, it takes about 10 minutes to spray out the 10 liters of water stored in the water storage container. After spraying water for 10 minutes, if there is still a flame, wait for 1 minute and then start the next water spraying operation. At this time, the water in the water storage container is basically sprayed out, and the spray nozzle stops spraying water. Even if the flame is still burning, with the above 10 minutes of water spraying to suppress the flame, the flame will not be very strong, and the entire cockpit has been sprayed wet, so there is no possibility of the whole vehicle being ignited. If there is still a flame burning within the set 1-minute interval, when the "vehicle control center" receives the flame information or the temperature value reaches the water spray threshold, the "vehicle control center" will control the relevant components to start again and spray water to extinguish the fire in the vehicle as it did the first time. The difference is that the first pump started is the pump in several water storage containers, and the water or antifreeze in several water storage containers is pumped. The second pump started is the windshield washer pump, and the liquid used for fire extinguishing is windshield washer fluid, that is, glass water. Because when spraying water to extinguish the fire for the first time, the water or antifreeze stored in several water storage containers has been used up. When starting this pump again, the water level alarm in the water storage container will transmit the information of no water to the "vehicle control center". At the same time, the water flow sensor installed between the pump and the liquid convergence chamber cannot detect the flow of liquid. When the "vehicle control center" receives the information of no water flow from the water flow sensor, or receives any one of the two pieces of information, it will automatically close the pump in the water storage container, and the adjacent solenoid valve will also be automatically closed. Next, the "vehicle control center" will close the normally open solenoid valve of the waterway channel leading to the windshield cleaning direction and open the solenoid valve leading to the liquid convergence chamber, so that the windshield washer fluid passes through the "liquid convergence chamber" and then supplies the spray nozzle in the vehicle to spray water to extinguish the fire for the second time. Generally, the glass water storage container of a vehicle can only store about 3 - 4 L of liquid. After starting the windshield washer pump, with a water spray rate of 1 L / min, it takes about 3 - 4 minutes to spray out. When the glass water is consumed, the "vehicle control center" will receive another information of no water flow from the water flow sensor. The "vehicle control center" will automatically close the windshield washer pump and the relevant solenoid valves, and automatically open the relevant solenoid valves of the engine coolant fire extinguishing pump and the waterway channel to continue spraying water to extinguish the fire and cool down the vehicle. Generally, the coolant of a fuel engine is between 5 - 7 L, 4 - 6 L for small vehicles, and about 10 L for large SUV models.The sum of windshield washer fluid and engine coolant generally exceeds 10 L. The coolant for the power battery pack of new energy vehicles is at least 4 - 6 L. For some new energy vehicles, the sum of the coolant for the power battery pack, charger, and other cooling systems is as much as 10 - 13 L. The designed flow rate of the water pump is 1 L / min. It takes about 10 - 15 minutes to consume all the windshield washer fluid and coolant. When the water pump is started to spray water for the second time, as long as there is a flame burning, it will keep spraying until all the coolant is used up. However, at this time, it can basically ensure that the flame is extinguished. Even if the flame is still burning, with more than 20 liters of water in various parts of the vehicle, generally the flame will not grow very large and will not cause the whole vehicle to catch fire. If the flame is completely extinguished during the spraying process and the flame sensor can no longer detect the presence of the flame, the "vehicle control center" will stop supplying power to the working water pump through the controlled relay, and the spraying action will stop, saving some coolant.

[0112] When using the coolant to spray water to extinguish fires and cool down the vehicle with this invention's technical device, it first consumes the coolant of the fuel engine, and then transfers to consume the coolant of components such as the power battery pack and charger. For pure electric vehicles, after the windshield washer fluid is used up, it will directly consume the coolant of components such as the power battery pack and charger. After the fire is extinguished, thoroughly check the vehicle and replenish the consumed various liquids.

[0113] The above is the water spraying working sequence and process for consuming different liquids to extinguish fires when there is a flame in the cockpit or cabin. When there is a flame in other areas of the four regions, the water spraying working sequence and process for consuming different liquids to extinguish fires are the same.

[0114] When there is an external fire source ignited around the vehicle, the set water spraying frequency is different from that in the above four regions. When there is an external fire source around the vehicle, water should be sprayed to cool down the surface of the vehicle in the high - temperature area when the temperature sensor detects that the surface of the vehicle body reaches 110℃. This temperature value is set because once the surface of the vehicle body reaches a high temperature of 110℃, it indicates that there must be a fire source burning nearby and the distance is not far, and there is a possibility of igniting the vehicle. Spraying water to cool down the outer surface of the high - temperature area of the vehicle can prevent the vehicle from being ignited. At least before all the liquids carried on the vehicle are sprayed out, the vehicle will not be ignited, extending the time without being ignited. This time period is about 30 - 40 minutes. Because of the set intermittent water spraying and fire extinguishing and cooling program, it takes at least more than 30 minutes to consume all the water sources. During this period, rescue can be carried out or the vehicle can be moved away. Another point is that the temperature of 110℃ does not cause much damage to the vehicle. The ignition points of the paint, plastic parts, rubber parts, etc. on the surface of the vehicle body are all higher than this temperature value. That is to say, these combustible parts will not be ignited at a temperature of 110℃. Therefore, setting the threshold value of 110℃ on the surface of the vehicle body is reasonable for spraying water to extinguish fires and cool down the vehicle.

[0115] When the flame sensors installed on the outer surfaces around the vehicle body detect a fire, the water spraying action cannot be triggered. That is to say, the flame information transmitted by the flame sensors installed around the vehicle cannot trigger the water spraying function of the device of the present invention, but can trigger the fire information sending function. If the "vehicle control center" receives the signals transmitted by the flame sensors continuously and strongly, it will also trigger the automatic vehicle moving function (for vehicles with intelligent driving functions). When the "vehicle control center" receives the flame information from the flame sensors distributed around the vehicle, the "vehicle control center" will only push the fire information to the associated mobile phone and send the real-time image video around the vehicle to the owner's mobile phone. Because the detection distance of the flame sensors is relatively far, if the "vehicle control center" receives the fire information from the flame sensors and sprays water on the surface around the vehicle with fire, it will be disadvantageous to protect the vehicle. Sending information to remind the vehicle to be moved is effective. When the vehicle cannot be moved in time due to certain reasons, the temperature data detected by the temperature sensor is the basis for controlling the water spraying timing and reasonably protecting the vehicle, which is more reasonable and effective for protecting the vehicle with limited on-vehicle water resources.

[0116] When the temperature of a certain side surface of the vehicle body reaches 110°C, the "vehicle control center" receives the temperature information value of the temperature sensor installed in this area, which reaches the threshold for opening the water nozzles in this area to spray water. The "vehicle control center" energizes the control motor of the water nozzles installed in this area, so that the water nozzles in this area extend to the set position. At the same time, the water channel from the water storage container to the water nozzles in this area is opened, and the channels of other water nozzles remain closed. The water pump in the water storage container is preferentially started. The water pump pumps the water or antifreeze in the water storage container to spray and cool the surface of the high-temperature area of the vehicle in a rotating manner. The spraying frequency is to rotate and spray for 1 minute, spraying about 1 liter of water, with an interval of 2 minutes, then spraying for 1 minute, and then an interval of 2 minutes, and so on in a cycle, spraying about 1 liter of water in about 3 minutes. By designing the spraying angle and spraying coverage range of the nozzles, it is ensured that more than 90% of the sprayed water is sprayed on the outer surface of the high-temperature area of the vehicle. If the fire outside the vehicle increases, more and more heat is radiated to the vehicle body surface, and the vehicle body surface temperature will gradually rise. When the temperature range is between 110°C and 150°C, the water is sprayed and cooled at this frequency. The ignition point of the vehicle rubber seal is 160°C, the ignition point of the plastic is 280°C, and the automotive paint can not burn below 200°C. Therefore, when the vehicle surface temperature reaches 150°C, the spraying frequency is increased. Each time it rotates and sprays for 1 minute, it sprays again after an interval of 1 minute, and so on in a cycle until all the water is sprayed out. During this period, about 1 liter of water is consumed in about 2 minutes, trying to delay the time when the vehicle surface temperature reaches 160°C. If the vehicle surface temperature quickly reaches 160°C, continuous spraying is required, with a spraying volume of 1 L / min until all the water sources are consumed.

[0117] IV. Power supply system.

[0118] The function of the power supply system is to supply power to all electrical components in the technical device of the present invention. The power supply system in the present invention is composed of a spare 12V65Ah battery, a DC-DC charging module, a DC-DC power supply module, a fireproof and high-temperature resistant wire, etc.

[0119] The function of the backup battery is to automatically cut off the main power supply when the vehicle is involved in an accident. Sometimes the accident will be accompanied by a vehicle fire. At this time, using the backup battery power to extinguish the vehicle fire can reduce losses. When the people in the car cannot save themselves, the vehicle automatically starts the fire extinguishing and cooling function to save the lives of the people in the car and add precious time for rescue.

[0120] The backup battery equipped in the vehicle is generally a 12V dry battery. The battery capacity is based on the power consumption of the vehicle's water pump, relay, solenoid valve, vehicle control center, all lamps, buzzers, horns and other electrical appliances for 40 to 60 minutes. Generally, a 12V65Ah battery can meet the requirements.

[0121] In general, the power of a vehicle will not be automatically cut off in the early stage of a fire. However, in some vehicle accidents and when a wire short circuit causes a fire, the vehicle will automatically lock the power for safety, showing that the entire vehicle is out of power. If the original battery on the vehicle is used to power the device of the present invention, it cannot be guaranteed that the device of the present invention can work normally at any time. The backup battery power supply system is a relatively independent power supply system. The original power supply system of the vehicle is only responsible for charging the backup battery through the isolated DC-DC charging module. When the power supply system of the original vehicle is turned off, it will not affect the normal use of the device. In addition, due to the characteristics of the isolated DC-DC charging module, the power of the backup battery will not flow back to the original vehicle power supply system. Using the backup battery as the power supply to power the device of the present invention will not affect the automatic water spraying and fire extinguishing and cooling of the vehicle due to the power outage of the original vehicle power supply system at any time. It can ensure sufficient power supply when the vehicle catches fire and needs to extinguish the fire and cool down.

[0122] In the power supply system of the technical device of the present invention, multiple isolated DC-DC power modules are used to supply power to different electrical units. The isolated DC-DC power module can convert the 12V DC voltage of the standby 12V battery into different voltages required by various electrical appliances in the device of the present invention. For example, if a buzzer requires a 5V DC power supply, an isolated DC-DC power module that converts 12V DC to 5V DC can be selected. After the 12V DC voltage of the 12V battery is converted into 5V DC voltage by the isolated DC-DC power module, the output terminal of the isolated DC-DC power module and the buzzer are connected by wires and can be used normally. Some control modules require 3.3V voltage control, and an isolated DC-DC power module that converts 12V DC to 3.3V DC can easily solve the problem. The advantage of selecting an isolated DC-DC power module is that using a single 12V battery can meet the multiple DC voltage requirements of different electrical appliances, and it can also avoid the situation where the entire system cannot work due to a short circuit of the electrical appliances downstream of a certain isolated DC-DC power module.

[0123] In the technical device of the present invention, the coordinated linkage between various systems and between electrical units is achieved by transmitting and regulating current and voltage through fireproof and high-temperature-resistant wires. To ensure that the technical device of the present invention can also stably transmit and function in an environment with high-temperature flames, fireproof and high-temperature-resistant wires are used to connect between the standby battery and the "vehicle control center", between the "vehicle control center" and each sensor, between the "vehicle control center" and the control motors of each sprinkler nozzle, between each water pump in the "vehicle control center" system, between each solenoid valve in the "vehicle control center", etc.

[0124] V. Intelligent alarm system.

[0125] The function of the intelligent alarm system in the present invention is to send vehicle fire information, videos, etc. to the associated mobile phone when a fire breaks out inside or outside the vehicle, to make buzzers, horns, etc. emit alarm sounds, as well as other audio, lighting and other information to attract the attention of people around the vehicle.

[0126] The intelligent alarm system consists of an information intelligent processing IPU module, a Bluetooth module, a cellular 5G network module, an Internet of Things card, an ESP8266 module with WiFi function inside the "vehicle control center", and a high-power buzzer, horn, lamp, relay, communication line, etc. that are connected to the "vehicle control center" through an interface and are controlled by the "vehicle control center".

[0127] When there is a fire inside or outside the vehicle, the temperature sensor and the flame sensor will respond immediately, and transmit the detected temperature and fire information to the "Vehicle Control Center" immediately. After receiving the information from the sensors, the "Vehicle Control Center" will send the fire information to the owner's mobile phone and other associated mobile phones in the form of text messages in the first place, and push it continuously until it attracts the attention of relevant personnel. The video of the internal and external environment of the vehicle will be sent to the owner's mobile phone, so that the owner can accurately understand the situation inside and outside the vehicle at that time, so as to enable the owner to take actions to rescue the vehicle. At the same time, the "Vehicle Control Center" will make the relay between the backup battery and related audio devices such as each lamp, high-power buzzer, horn, and loudspeaker in the controlled circuit close, and connect the current loop between the backup battery and related audio devices such as lamps, high-power buzzers, horns, and loudspeakers, so that the buzzer, horn, and loudspeaker etc. all emit high-decibel alarm sounds, and the audio devices such as loudspeakers emit sounds simulating human shouting such as "Fire!" "There is a fire", etc., and make the lamps such as headlamps, fog lamps, and turn signals flash intermittently or continuously to attract the attention of surrounding people and rescue the vehicle. Description of the Drawings:

[0128] There are three specification drawings in the present invention. The following will briefly describe the three specification drawings of the technical device of the present invention respectively.

[0129] I. Figure 1 It is a distribution diagram of components such as the vehicle control center, sensors, water spray nozzles, buzzers, loudspeakers, cameras, and water storage containers. It is a top view sketch of the distribution of the main components of the device of the present invention in the vehicle. The direction marked with the word "front of the vehicle" at the upper part of the figure indicates the head of the vehicle, and the lower part of the corresponding figure is the tail of the vehicle. The left and right parts of the figure respectively represent the left side and the right side of the vehicle. The five graphics pointed by the five numbers "3", "4", "5", "6", "7" marked at the front of the vehicle in the figure indicate that five components are installed at the position close to the front surface of the vehicle head. From 3 to 7, they are the buzzer, temperature sensor, water spray nozzle with a control motor, flame sensor, and loudspeaker respectively. The three graphics pointed by the three numbers "4", "5", "6" marked at the tail of the vehicle indicate that three components are installed at the position close to the surface of the vehicle tail. In the order of the numbers, they are the temperature sensor, water spray nozzle with a control motor, and flame sensor respectively. Similarly, the graphics and numbers marked on the left and right sides and the middle part of the vehicle represent the types and quantities of the corresponding components installed at these positions.

[0130] Shown in Figure 1 are the installation distribution positions of the main components. In numerical order from 1 to 14, the arrows point to: 1. Vehicle control center. 2. Spare 12V battery. 3. Buzzer. 4. Temperature sensor. 5. Water spray nozzle with control motor. 6. Flame sensor. 7. Loudspeaker. 8. Water spray nozzle (without control motor). 9. Water storage container. 10. Camera. 11. Human presence sensor. 12. Engine compartment. 13. Cockpit. 14. Trunk. The eight graphics evenly distributed inside the two contour vertical lines on the left and right sides of the component distribution diagram represent four temperature sensors and four flame sensors installed in the vehicle chassis area, with the installation positions close to the left and right sides of the chassis. The three graphics distributed between the three squares represent the installation positions of two water spray nozzles and a water storage container in the vehicle chassis area near the center line of the chassis. The square indicated by the number "12" in the figure represents the engine compartment area. The ten graphics in this square represent the corresponding ten components installed in the vehicle engine compartment area, as well as their approximate installation positions and quantities. The square indicated by the number "13" in the figure represents the cockpit area. The graphics in this square represent the corresponding components installed in the vehicle cockpit area, as well as their approximate positions and quantities. The two numbers "10" and "11" in the figure represent the camera and the human presence sensor respectively, and the camera and the human presence sensor are only installed at the rear middle position of the cockpit, and are not installed in other positions or other areas. The square indicated by the number "14" in the figure represents the trunk area. The graphics in this square represent the corresponding components installed in the vehicle trunk area, as well as their approximate positions and quantities. The two numbers "1" and "2" in the figure represent the vehicle control center and the spare 12V battery installed at the front end in the trunk because this is a relatively safe position. The five components distributed at the front of the vehicle, the three components at the rear of the vehicle, the three components on the left rearview mirror of the vehicle, and the three components on the right rearview mirror of the vehicle represent the types and quantities of the components distributed in the surrounding area of the vehicle exterior.

[0131] II. Figure 2It is a schematic diagram showing the connection of the vehicle control center with the water circuit, electric circuit and related components of the fire protection device. The diagram shows the connection logic and sequence of components, water pipes, wires, etc. in the water circuit and electric circuit of the device. The numbers from 1 to 27 in the diagram point to the following respectively: 1. Vehicle control center. 2. Backup battery. 3. Wire. 4. Water storage container pump. 5. Water storage container 1. 6. Solenoid valve. 7. Water flow sensor. 8. Water pipe. 9. Liquid convergence chamber. 10. Vehicle chassis area. 11. Sprinkler nozzle. 12. Sprinkler nozzle control motor. 13. Water storage container 2. 14. Engine compartment area. 15. Automobile glass window. 16. Windshield washer pump. 17. Windshield washer fluid reservoir. 18. Cockpit area. 19. One-way intake valve. 20. Fuel engine. 21. Fuel engine coolant fire pump. 22. Engine radiator. 23. Trunk area. 24. New energy vehicle power battery pack. 25. Power battery pack coolant fire pump. 26. Power battery pack radiator. 27. Area around the vehicle exterior.

[0132] From Figure 2 It can be seen that the electrical components in the water circuit and electric circuit of the device of the present invention are all connected to the "vehicle control center" pointed by the number "1" in the diagram with wires. The power supply for each electrical component in the device is provided by the backup battery through the vehicle control center. The numbers "4", "16", "21", and "25" in the diagram all refer to water pumps. Their connection characteristics are that after being connected with water pipes and solenoid valves, they are connected in series with water flow sensors, and then several water flow sensors are connected to the "9", that is, the liquid convergence chamber, with water pipes. The five water pipes led out from the liquid convergence chamber are respectively connected to the sprinkler nozzles in the five areas pointed by the numbers "10", "14", "18", "23", and "27", namely the vehicle chassis area, engine compartment area, cockpit area, trunk area, and area around the vehicle exterior. A solenoid valve is installed in series in the water flow connecting the liquid convergence chamber and the sprinkler nozzles in the five areas.

[0133] Among the five areas pointed by the numbers "10", "14", "18", "23", and "27" in the diagram, one sprinkler nozzle is used to represent the area where sprinkler nozzles need to be installed, not referring to a single one. Except for the trunk area pointed by the number "23" in the diagram where one sprinkler nozzle is installed, more than two sprinkler nozzles are installed in the other four areas. In the engine compartment area pointed by the number "14" in the diagram, the number "11" refers to the sprinkler nozzle, which is fixedly installed and does not require telescopic or folding installation, so no control motor is needed. The sprinkler nozzles in the other four areas pointed by the numbers "10", "18", "23", and "27" all require control motors, so both "11" and "12" are present in these four areas.

[0134] III. Figure 3It is a schematic diagram showing the distribution of three sensors, namely temperature sensor, flame sensor and human presence sensor, in five areas and their connection to the vehicle control center. The numbers from 1 to 11 in the figure indicate the following respectively: 1. Vehicle control center; 2. Spare 12V battery; 3. Connection wire between the sensor and the vehicle control center; 4. Flame sensor; 5. Temperature sensor; 6. Human presence sensor; 7. Vehicle chassis area; 8. Engine compartment area; 9. Cockpit area; 10. Trunk area; 11. Area around the vehicle exterior.

[0135] The figure shows that the power supply for each sensor in the device of the present invention is provided by the spare battery through the vehicle control center. The five squares pointed by the arrows of the five numbers "7", "8", "9", "10", and "11" in the figure respectively refer to the five areas of the vehicle chassis area, engine compartment area, cockpit area, trunk area, and area around the vehicle exterior. The eight figures in the square pointed by the number "7" represent eight sensors cross-mounted in the vehicle chassis area, including four flame sensors and four temperature sensors. The eight lines connecting from "1" to "7" in this figure represent the eight wires connecting the vehicle control center to the eight sensors installed in the vehicle chassis area, and each sensor is connected to the vehicle control center by a wire. The four figures in the square pointed by the number "8" represent two flame sensors and two temperature sensors cross-mounted in the vehicle engine compartment area. The four lines connecting from "1" to "8" in this figure represent the four wires connecting the vehicle control center to the four sensors installed in the vehicle engine compartment area. The five figures in the square pointed by the number "9" represent two flame sensors and two temperature sensors cross-mounted in the vehicle cockpit area, and a human presence sensor is also installed. The five lines connecting from "1" to "9" in this figure represent the five wires connecting the vehicle control center to the five sensors installed in the vehicle cockpit area. The two figures in the square pointed by the number "10" represent one flame sensor and one temperature sensor installed in the vehicle trunk area. The two lines connecting from "1" to "10" in this figure represent the two wires connecting the vehicle control center to the two sensors installed in the vehicle trunk area. The eight figures in the square pointed by the number "11" represent four flame sensors and four temperature sensors cross-mounted in the area around the vehicle exterior. The eight lines connecting from "1" to "11" in this figure represent the eight wires connecting the vehicle control center to the eight sensors installed in the area around the vehicle exterior. Specific implementation method:

[0136] 1. Installation and connection of various components of the technical device of the present invention on the vehicle.

[0137] At the designed positions on the engine compartment, cockpit, trunk of the vehicle, as well as on the vehicle chassis and the front, rear, left, and right four sides outside the vehicle, install spray nozzles, temperature sensors, and flame sensors respectively. Also install a human presence sensor and an in-vehicle camera above the interior of the cockpit. Install a water storage container in the gap between the engine compartment and the vehicle chassis. The water storage container is equipped with a water pump, a water level alarm, and an icing sensor. The water outlet pipe of the water pump is connected to a liquid convergence chamber. Install a solenoid valve and a water flow sensor between the water outlet end of the water pump and the liquid convergence chamber. Modify the windshield washer outlet pipe at the upper end of the windshield washer reservoir. Cut off the windshield washer outlet pipe and install a tee at the cut-off point. One end of the tee is connected to the windshield washer reservoir, one end is connected to the liquid convergence chamber. Install a solenoid valve and a water flow sensor between the tee and the liquid convergence chamber. After installing a solenoid valve at the other end, connect it to the original pipe leading to the windshield. Modify the engine coolant circulation pipe and the coolant circulation pipes of the new energy power battery pack and the charger. Cut off the lowest point of the coolant circulation pipes of the two, and install a tee with a matching specification at the cut-off point. First, use the two straight-through ends of the tee to keep the original circulation waterway unobstructed. Install a water pump at the extra end with a 90° angle. Install a solenoid valve and a water flow sensor successively at the high-pressure water outlet end of the water pump. The water outlet end of the water flow sensor is connected to the liquid convergence chamber. Connect the liquid convergence chamber and each spray nozzle with copper pipes. Install a solenoid valve between the liquid convergence chamber and each spray nozzle. Modify the engine coolant circulation pipe and the coolant circulation pipes of the new energy power battery pack and the charger. Cut off the highest point of the coolant circulation pipes of the two, and install a tee with a matching specification at the cut-off point. First, use the two straight-through ends of the tee to keep the original circulation waterway unobstructed. Install a normally closed solenoid valve at the extra end with a 90° angle. Install a one-way intake valve at the other end of the normally closed solenoid valve. When the fire extinguishing water pump pumps coolant to extinguish the fire and cool down, this solenoid valve is opened simultaneously to allow air to enter the cooling system. Otherwise, the fire extinguishing water pump cannot pump coolant to spray and extinguish the fire and cool down the vehicle. Except for the spray nozzles fixedly installed in the engine compartment, the spray nozzles installed in the other four areas should be hidden and controlled by the spray nozzle control motor. The hidden spray nozzles should be sealed and connected with high-temperature resistant silicone hoses between the end of the copper pipe and the spray nozzle.

[0138] Install the "vehicle control center" module and the backup battery in a suitable space in the trunk. Connect the "vehicle control center", the battery, and each sensor, water pump, solenoid valve, buzzer, horn, audio device, lamp, etc. according to the designed circuit with fireproof wires, so that the signal transmission between each sensor and the "vehicle control center" is unobstructed, and the instructions of the "vehicle control center" can be smoothly sent to each water pump, solenoid valve, buzzer, horn, audio device, lamp, etc., making the entire invention device form an organic intelligent whole.

[0139] II. Zonal control and unified coordination.

[0140] The specific implementation method is divided into five cases: according to different functional areas, different parts, different materials, different working environments and different fire extinguishing and cooling methods of the vehicle, the present invention divides the general vehicle into five areas, namely, the vehicle bottom area, the vehicle body surrounding area, the engine compartment area, the cockpit cabin area, and the trunk area. The threshold temperature setting values for the automatic water spraying of the water nozzles in the five areas are also different, namely: 90℃ for the vehicle bottom area, 110℃ for the vehicle body surrounding area, 110℃ for the engine compartment area, 100℃ for the cockpit cabin area, and 100℃ for the trunk area.

[0141] When objects are burning in a certain area inside or outside the vehicle, flames will be ignited in this area, and the temperature of the air around the flames will rise rapidly. At this time, the on-board flame sensor and temperature sensor installed in this area will instantly detect and collect these changes, and convert the flame changes and temperature changes in this area into electrical signals of different magnitudes, which will be transmitted to the brain component of the device of the present invention, the "vehicle control center", in a timely manner through fireproof wires. The "vehicle control center" is an upgraded version of the Internet of Things module. In addition to being able to realize general Internet of Things functions, automatically and intelligently process information, automatically spray water to extinguish fires and cool down, and send alarms, it can also send fire information and videos to related mobile phones, and automatically move the car in case of fire. The "vehicle control center" automatically opens the water nozzle according to the set flame threshold and temperature threshold, and determines that the area is a high-temperature flame area. The "vehicle control center" immediately issues a command to open all the solenoid valves in the water channel from the water pump in the water storage container 1 to the water nozzle in this high-temperature flame area, open the water channel from the water pump to the water nozzle in this area, and keep the solenoid valves of other water flow channels closed. The water pump in the water storage container 1 is started to extract the stored water or antifreeze in the water storage container 1. The liquid is pressurized by the water pump and passes through the water pipe of the water channel to provide high-pressure water to the water nozzle installed in the high-temperature area. The high-pressure water is sprayed out through the rotating nozzle of the water nozzle to extinguish the fire and cool down the high-temperature flame area of the vehicle.

[0142] If the vehicle chassis, engine compartment, cockpit, and trunk are on fire, the main focus is on fire extinguishing. When the corresponding regional threshold is reached, high-pressure water is sprayed directly and continuously in the area to extinguish the flames, supplemented by cooling the vehicle. If the fire is from an external source around the vehicle, such as an adjacent vehicle burning, when the surface temperature of the vehicle reaches the water spraying threshold of 110°C, the main focus is on cooling the high-temperature surface of the vehicle. The high-temperature area of the vehicle body must be sprayed with water at a set frequency to cool it down, mainly to keep the vehicle body from being ignited, supplemented by fire extinguishing.

[0143] When the water in water storage container 1 is finished spraying, the "vehicle control center" will automatically close the water pump in container 1 and the solenoid valve between the water pump and the liquid gathering chamber, and at the same time open the water pump in water storage container 2 and the solenoid valve at the high-pressure end of the water pump, and use the water or antifreeze in water storage container 2 to continue to supply water to the high-temperature area water nozzle. When the water in the water storage container 2 is sprayed out, the "vehicle control center" will automatically close the water pump in the water storage container 2 and the solenoid valve between the water pump and the liquid gathering chamber. The vehicle equipped with the water storage container 3 starts to consume the water or antifreeze in the water storage container 3. If there is none, the glass window cleaning pump will be energized, and the normally open solenoid valve of the water channel leading to the glass window will be energized (only this solenoid valve is a normally open solenoid valve) to close it, and the normally closed solenoid valve of the water channel leading to the liquid gathering chamber will be energized to open it, opening the water channel from the glass window cleaning pump to the water nozzle in the high-temperature area, starting the glass window cleaning pump, drawing glass window cleaning liquid from the glass kettle, and continuing to supply the water nozzle in the high-temperature area to spray water to cool the vehicle.

[0144] When the windshield washer fluid is consumed, the corresponding solenoid valves and water pumps are switched on and off in turn in the same logical sequence as above, the fuel engine coolant fire extinguishing water pump is turned on, and finally the new energy battery pack coolant fire extinguishing water pump is enabled, until all the on-board liquids that can be automatically sprayed by the device of the present invention are consumed, so as to extinguish the fire and cool down the vehicle, and extend the time that the vehicle is not ignited as much as possible.

[0145] When a fire occurs inside or outside a vehicle, while the inventive device sprays water on the vehicle to extinguish the fire and cool it down for self-rescue, the intelligent alarm system of the inventive device will also be activated immediately, sending vehicle fire information and video to the associated mobile phone, causing the buzzer and horn to sound an alarm, as well as other audio, light and other information, to attract the attention of the vehicle owner, associated persons and people around the vehicle, so that rescue measures can be implemented in time.

[0146] For vehicles with intelligent driving functions, when there is a fire around the outside of the vehicle, the invented device can not only spray water to cool down and save itself, but also send relevant information. The "vehicle control center" will also send a vehicle moving instruction to the vehicle's driving computer, so that the vehicle can automatically drive to a safe area to avoid danger and protect the vehicle. If the vehicle itself catches fire, this function will also avoid igniting other vehicles and reduce property losses.

[0147] The technical device of the present invention can automatically and comprehensively implement a variety of measures to protect the safety of the vehicle when the vehicle is at risk of fire in the early stage of flame ignition.

Claims

1. Install a water spray nozzle on the vehicle.

2. When there is a fire in the vehicle, the installed water spray nozzle automatically sprays water on the vehicle to extinguish the fire and reduce the temperature.

3. Use a temperature sensor to transmit the temperature changes inside and outside the vehicle to the vehicle-mounted Internet of Things module.

4. Use a flame sensor to transmit information about the fire sources inside and outside the vehicle to the vehicle-mounted Internet of Things module.

5. Use a human presence sensor to transmit information about whether there are people inside and outside the vehicle to the vehicle-mounted Internet of Things module.

6. Connect the sensors to the vehicle-mounted Internet of Things module with wires.

7. The vehicle-mounted Internet of Things module sends alarm messages to multiple set mobile phones.

8. The vehicle-mounted Internet of Things module has the function of receiving instructions from the owner's mobile phone.

9. The vehicle-mounted camera transmits the surrounding images of the vehicle to the set mobile phone.

10. The mobile phone controls the vehicle to drive into a safe area.

11. The mobile phone controls the water spraying function.

12. When there is a fire, the buzzer or horn automatically emits an alarm sound.

13. When there is a fire, audio devices such as loudspeakers automatically emit the simulated shouting sound of "Fire!".

14. When there is a fire, the vehicle-mounted lamps continuously flash.

15. The storage battery is used as a backup power supply.

16. Install temperature sensors inside and outside the vehicle.

17. Install flame sensors inside and outside the vehicle.

18. Install a human presence sensor inside the vehicle.

19. Supply liquid to the water spray nozzle through a pipe.

20. The water spray nozzle has the functions of electric protrusion and retraction.

21. The water spray nozzle has the functions of electric folding and unfolding.

22. The water spray nozzle can automatically rotate and spray under pressure.

23. When the protrusion port of the water spray nozzle does not protrude, it is blocked with an object.

24. Use a water storage container to store water or antifreeze.

25. Use an icing sensor to monitor whether the liquid in the water storage container freezes.

26. Add substances with fire extinguishing effects to the water stored in the water storage container.

27. The water storage container is made of non-combustible or flame-retardant materials.

28. Set a breathing hole on the water storage container.

29. The size and shape of the water storage container are determined by the space at the installation position on the vehicle.

30. Use a water pump to pump the liquid in the water storage container to supply the water spray nozzle for fire extinguishing.

31. Install a solenoid valve at the high-pressure end of the water pump. The solenoid valve is controlled by the vehicle Internet of Things module to open or close. The water outlet end of the solenoid valve is connected to a water pipe.

32. Install a three-way pipe joint at the front end of the branch of the liquid flow pipeline in the vehicle front windshield cleaning system. The water inlet end of the three-way pipe is connected to the window cleaning pump. Install solenoid valves at both water outlet ends of the three-way pipe. The other end of one solenoid valve is connected to the original glass cleaning waterway, and the water outlet end of the other solenoid valve is connected to a water pipe. The solenoid valve and the water pump in the vehicle front windshield cleaning system are controlled by the vehicle Internet of Things module to open or close.

33. Use the front windshield cleaning pump to pump the glass cleaning liquid to supply the water spray nozzle to spray.

34. Disconnect the lower pipe at the connection position of the circulating cooling water pipeline between the vehicle fuel engine and the radiator, install a three-way pipe joint, use two of the ends of the three-way pipe joint to connect to the original circulating waterway to keep the original circulating waterway unobstructed, and connect the remaining end of the three-way pipe joint to a water pump and a solenoid valve. The water pump and the solenoid valve are controlled by the vehicle Internet of Things module to open or close. The water outlet end of the solenoid valve is connected to a water pipe.

35. Disconnect the lower pipe of the circulating cooling water pipe connection between the power battery pack of the new energy vehicle and the radiator, install a three-way pipe joint, use two ends of the three-way pipe joint to connect to the original circulating water path to keep the original circulating water path unobstructed, and connect the remaining end of the three-way pipe joint to a water pump and a solenoid valve. The water pump and the solenoid valve are controlled by the vehicle Internet of Things module to be turned on or off, and the water outlet end of the solenoid valve is connected to a water pipe.

36. Set an air inlet in the circulating cooling system, and the air inlet is controlled by a solenoid valve for opening and closing.

37. Gather the water pipes connected to the water outlet ends of multiple solenoid valves together, and set a liquid gathering chamber at the gathering place. The liquid pumped out by multiple water pumps all flows through this liquid gathering chamber.

38. Install a water flow sensor on the water pipe between the water outlet end of the solenoid valve connected to the water pump and the liquid gathering chamber. The water flow sensor transmits the liquid flow information to the vehicle Internet of Things module.

39. Connect the water outlet end of the liquid gathering chamber at the water pipe gathering place to the vehicle's water spray nozzle. Install a solenoid valve between the liquid gathering chamber and the water spray nozzle. The solenoid valve is controlled by the vehicle Internet of Things module to be turned on or off.

40. The solenoid valve at the front end of the water spray nozzle is controlled by the vehicle Internet of Things module and is usually in the closed state. Only when the temperature in an area rises to the set threshold, the vehicle-mounted Internet of Things module energizes the solenoid valve at the front end of the fire extinguishing water spray nozzle in the high-temperature area through a relay, the solenoid valve opens, and the water path channel leading to the high-temperature area is opened.

41. Use the water in the water storage container to extinguish the fire and cool down the vehicle.

42. Use windshield washer fluid to extinguish the fire and cool down the vehicle.

43. Use engine coolant to extinguish the fire and cool down the vehicle.

44. Use the coolant of the power battery pack of the new energy vehicle to extinguish the fire and cool down the vehicle.

45. Connect the water storage container and the water spray nozzle with a pipeline.

46. Use a water pump to pump the liquid and transport it through the pipeline to be sprayed out by the water spray nozzle.

47. The start sequence of each water pump is as follows: the first-stage water storage container water pump, the second-stage windshield washer water pump, the third-stage engine coolant water pump (the added fire extinguishing water pump), the fourth-stage power battery pack coolant water pump (the added fire extinguishing water pump). When the water flow sensor of the previous-stage water pump fails to detect liquid flow, the vehicle Internet of Things module closes the water pump and solenoid valve of the previous stage, and at the same time automatically opens the water pump and solenoid valve of the next stage.

48. Supply power to the water pump through a wire using the battery's power.

49. Supply power to the vehicle-mounted Internet of Things module through a wire using the battery's power.

50. Supply power to the solenoid valve through a wire using the battery's power.

51. Supply power to the water flow sensor through a wire using the battery's power.

52. Install a solenoid valve between the water pump and the water spray nozzle.

53. Use the solenoid valve to control the on and off of the water path.

54. Connect the solenoid valve and the vehicle-mounted Internet of Things module with a wire.

55. Function of automatically moving the vehicle when encountering fire.

56. The vehicle Internet of Things module controls the relay.

57. The relay controls the water pump.

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