CN211357524U

CN211357524U - Vehicle-mounted fire alarm protection automatic fire extinguishing device

Info

Publication number: CN211357524U
Application number: CN201920862064.0U
Authority: CN
Inventors: 蔡裕敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-10
Filing date: 2019-06-10
Publication date: 2020-08-28
Anticipated expiration: 2029-06-10

Abstract

The utility model discloses an on-vehicle fire alarm protects automatic fire extinguishing device, the power distribution box comprises a box body, install extinguishing tank and controller in the box, a serial communication port, the controller includes power processing unit, input unit, MCU processing unit, human-computer interaction unit and output unit, wherein, MCU processing unit links to each other with input unit, human-computer interaction unit and output unit respectively, MCU processing unit gathers the input signal in each on-off state and the human-computer interaction unit in the input unit, and the party sends the signal of putting out a fire automatically to output unit, and the other party sends the warning suggestion to the human-computer interaction unit. The utility model discloses can realize the early warning of conflagration, carry out analysis and judgement and in time make the getting rid of and the solution to the trouble by the driver, when the condition of a fire develops the conflagration in early days, can automatic fire extinguishing, send reputation fire alarm signal to the driver's area simultaneously, can be manual can be automatic, dual guarantee.

Description

Vehicle-mounted fire alarm protection automatic fire extinguishing device

Technical Field

The utility model relates to a extinguishing device, in particular to on-vehicle fire alarm protection automatic fire extinguishing device.

Background

At present, with the continuous popularization of battery application, batteries are used as power equipment on new energy automobiles in particular. When the battery is short-circuited and extruded by external force, the temperature of the battery is easy to rise abnormally and smoke easily, even the battery is burnt and exploded seriously, and if the battery cannot be put out a fire in time, the personal safety of personnel on a vehicle can be endangered. Therefore, how to realize early warning of battery fire and automatically extinguish fire becomes the problem that each vehicle-mounted fire extinguisher manufacturer considers optimization and promotion.

SUMMERY OF THE UTILITY MODEL

In view of the technical problem who exists among the background art, the utility model aims at providing a vehicle-mounted fire alarm protection automatic fire extinguishing device, can effectively detect the early conflagration of automobile-used battery box and give the warning, realize automatic fire extinguishing simultaneously, prevent conflagration after-combustion.

In order to solve the technical problem, the utility model discloses a following technical scheme: on-vehicle fire alarm protects automatic fire extinguishing device, including the box, install fire extinguishing tank and controller in the box, its characterized in that, the controller includes power processing unit, input unit, MCU processing unit, human-computer interaction unit and output unit, wherein, MCU processing unit links to each other with input unit, human-computer interaction unit and output unit respectively, MCU processing unit gathers each on-off state in the input unit and the input signal in the human-computer interaction unit, and one side sends the automatic fire extinguishing signal to the output unit, and the other side sends the warning suggestion to the human-computer interaction unit.

Preferably, the output unit comprises a fire valve, a puncture needle capable of puncturing a membrane is arranged in the fire valve, a blasting agent is arranged at one end of the puncture needle inside the fire valve, a firing cable is arranged at a position close to the blasting agent, and the firing cable is connected with the MCU processing unit.

Preferably, still be equipped with the distributor in the box, be equipped with first through-hole, second through-hole and third through-hole on the distributor respectively, first through-hole is through opening and shutting control mechanism and fire extinguishing tank intercommunication, second through-hole and first through-hole intercommunication, the quantity of second through-hole and third through-hole corresponds each other and communicates mutually, the tip of second through-hole is equipped with the diaphragm, the diaphragm is supported by the screwed pipe of taking the through-hole in the second through-hole and is pressed, the top of second through-hole is located to the fire valve, the tip of fire valve is equipped with the connecting block, the fire valve passes through connecting block sealing connection at second through-hole tip.

Preferably, the opening and closing control mechanism comprises a valve core connected with an opening of the fire extinguishing tank, a feeding port, a discharging port and a control head are arranged on the valve core, a spring is arranged in the valve core, the feeding port is connected with the fire extinguishing tank, the discharging port is connected with a conveying pipeline, the other end of the conveying pipeline is connected with the first through hole, a diaphragm is arranged in the control head, the spring abuts against the diaphragm to be in a contraction and pressing state, and the control head is correspondingly connected with the fire extinguishing valve.

Preferably, a pressure reducing one-way valve is further arranged in the valve core.

Preferably, the fire extinguishing valve is connected with an abnormality detection circuit, and when the fire extinguishing valve is opened or the drive is abnormal, the abnormality detection circuit sends an abnormality report to the MCU processing unit.

Preferably, the power supply processing unit includes an EMI filter, a surge protection circuit, an overvoltage, undervoltage and overcurrent protection circuit and a power supply management unit, and the EMI filter, the surge protection circuit and the overvoltage, undervoltage and overcurrent protection circuit process the power supply and then the power supply management unit converts the output to provide the output to each unit.

Preferably, the MCU processing unit is further connected to a watchdog unit for detecting an abnormality and resetting.

Preferably, the input unit comprises a noise elimination switch, an emergency switch, a leakage switch, a temperature control switch and an alarm sensor.

Preferably, the MCU processing unit adopts photoelectric isolation processing to the external interface.

Preferably, the human-computer interaction unit comprises a buzzer, a liquid crystal touch screen, a touch screen controller, a liquid crystal driving controller and a touch screen interface, the MCU processing unit gives an alarm on the liquid crystal touch screen through the liquid crystal driving controller and gives a prompt whether to extinguish a fire, the liquid crystal touch screen inputs a command whether to extinguish the fire and the command is fed back to the MCU processing unit through the touch screen controller, and the touch screen interface is connected with the ESD electrostatic protection circuit.

Preferably, the power supply of the power supply processing unit is provided by a vehicle battery, and when the vehicle battery loses power supply capacity, the power supply of the power supply processing unit is provided by a backup battery.

Preferably, the power supply processing unit, the input unit, the MCU processing unit, the human-computer interaction unit and the output unit are all arranged on a circuit board, the circuit board is arranged in the box body, and an interlayer for placing a standby battery is further arranged in the box body.

The utility model has the advantages that: firstly, the fire condition is automatically identified, the fire valve is opened to extinguish fire, the fire extinguishing efficiency is high, the control can be effectively carried out for a long time, and the battery fire reignition is prevented; and secondly, early fire early warning is realized, a driver analyzes and judges and timely eliminates and solves faults, if an early fire condition develops to a fire, the fire can be automatically extinguished, and meanwhile, an acousto-optic fire alarm signal is sent to a driving area, so that manual operation, automation and double guarantee can be realized.

Drawings

FIG. 1 is an exploded view of the structure of the present invention;

FIG. 2 is a schematic diagram of a system configuration of the controller;

FIG. 3 is a view showing the distributor and the fire extinguishing valve being separated;

FIG. 4 is a cross-sectional view of the dispenser;

FIG. 5 is a view showing the valve body and the fire extinguishing valve being separated from each other;

fig. 6 is an exploded view of the structure of the fire extinguishing valve.

Detailed Description

Referring to the attached drawings, the vehicle-mounted fire alarm protection automatic fire extinguishing device comprises a box body 1, a fire extinguishing tank 3 and a controller 2 are installed in the box body 1, the controller 2 comprises a power supply processing unit 21, an input unit 22, an MCU processing unit 23, a human-computer interaction unit 24 and an output unit 25, the MCU processing unit 23 is respectively connected with the input unit 22, the human-computer interaction unit 24 and the output unit 25, the MCU processing unit 23 collects each on-off state in the input unit 22 and input signals in the human-computer interaction unit 24, on one hand, the automatic fire extinguishing signals are sent to the output unit 25, and on the other hand, alarm prompts are sent to the human-computer interaction unit 24.

In this embodiment, a distributor 6 is further arranged in the box body 1, the distributor 6 is respectively provided with a first through hole 18 arranged transversely, a second through hole 16 arranged in the vertical direction and a third through hole 10 arranged longitudinally, the first through hole 18 is communicated with the fire extinguishing tank 3 through an opening and closing control mechanism, the second through hole 16 is communicated with the first through hole 18, the second through hole 16 and the third through hole 10 are mutually corresponding in number and communicated, a diaphragm 11 is arranged at the end of the second through hole 16, and the diaphragm 11 is pressed by a threaded pipe 13 screwed in the second through hole 16 and provided with a through hole.

The output unit mainly takes charge of the execution of putting out a fire, the output unit includes fire-extinguishing valve 5, be equipped with puncture needle 52 that can puncture the diaphragm in the fire-extinguishing valve 5, the inside one end at puncture needle 52 that is provided with blasting agent 53 of fire-extinguishing valve 5 is close to blasting agent 53 department is provided with firing cable 54, firing cable 54 is connected with MCU processing unit 23, the top of second through-hole 16 is located to fire-extinguishing valve 5, the tip of fire-extinguishing valve 5 is equipped with connecting block 51, fire-extinguishing valve 5 passes through connecting block 51 sealing connection at the second through-hole 16 tip.

The opening and closing control mechanism comprises a valve core 4 connected with an opening of the fire extinguishing tank 3, a feeding hole 41, a discharging hole 42 and a control head 44 are arranged on the valve core 4, a spring is arranged in the valve core 4, the feeding hole 41 is connected with the fire extinguishing tank 3, the discharging hole 42 is connected with a material conveying pipeline 43, the other end of the material conveying pipeline 43 is connected with the first through hole 18, a diaphragm is arranged in the valve core, the spring abuts against the diaphragm to be in a contraction and pressing state, the control head 44 is correspondingly connected with the fire extinguishing valve 5, and the diaphragm in the valve core can be punctured by the fire extinguishing valve.

The valve core is also provided with a pressure reduction one-way valve, when the air pressure in the fire extinguishing tank is too high, the air can be discharged through the pressure reduction one-way valve, the fire extinguishing tank can automatically release air and reduce the pressure, the explosion of the fire extinguishing tank is prevented, and the fire extinguishing tank is safe and reliable.

The MCU external interfaces are all subjected to photoelectric isolation treatment in order to reduce interference generated when the fire-extinguishing valve works. In addition, the fire extinguishing valve 5 is connected with an abnormality detection circuit 251, when the fire extinguishing valve is open or the drive is abnormal, the abnormality detection circuit sends an abnormality report to the MCU processing unit, and a user can see the corresponding state in real time through the liquid crystal display.

When fire extinguishing is carried out, the MCU processing unit 23 transmits signals to the opening and closing control mechanism, so that a firing cable 54 inside a fire extinguishing valve 5 connected to a valve core 4 in the opening and closing control mechanism receives the electrical signals and generates electric sparks to ignite a blasting agent 53 close to the firing cable, impact force generated by explosion drives the piercing needle 52 to pierce a membrane in the valve core, a feed inlet of the valve core is communicated with a discharge outlet, at the moment, a certain amount of fire extinguishing spray is output by the fire extinguishing tank 3 and is conveyed into a first through hole 18 of a distributor 6, then the MCU processing unit 23 transmits the electrical signals to the firing cable 54 arranged on the fire extinguishing valve 5 corresponding to a high-temperature battery on the distributor 6, the firing cable 54 generates the electric sparks after receiving the electrical signals and detonates the blasting agent 53 close to the firing cable, the impact force generated by the explosion rapidly pushes the piercing needle 52 to pierce the membrane 11, and the fire extinguishing spray in the first through hole, and the fire extinguishing spray is conveyed to the abnormal batteries through the corresponding second through hole 16, the third through hole 10 and the external feeding pipeline 43 in sequence, so that the fire extinguishing spray can be sprayed out at the first time and pass through the distributor to reach the fire-starting position, and the batteries at the position can be accurately cooled and extinguished.

The power supply processing unit 21 comprises an EMI filter 211, a surge protection circuit 212, an overvoltage, undervoltage and overcurrent protection circuit 213 and a power supply management unit 214, wherein the EMI filter 211 mainly filters out higher harmonic interference of external electronic equipment to prevent interference with the work of internal electronic equipment; the surge protection circuit 212 can protect it from damage caused by voltage peaks, and if the voltage exceeds a safe value, it can regulate the voltage of the electrical equipment by ground suppression or short-circuit voltage to protect the internal circuit unit; the overvoltage, undervoltage and overcurrent protection circuit 213 can prevent malfunction caused by abnormal operation of the internal circuit due to external overvoltage or undervoltage, and the overcurrent protection function can prevent the external power supply device from being burnt out when the internal circuit is abnormal. The voltage transient range of a 24V battery power line is very wide, namely as small as 16V and as large as 87V, the working voltage range of a typical vehicle-mounted power system is usually only 18V-32V, the normal rated voltage of a battery is 24V when an engine is closed, and the normal rated voltage is 28.8V when the engine is started, but the range is easily expanded to be more than 80V peak value in a transient state. Therefore, the EMI filter 211, the surge protection circuit 212, and the overvoltage, undervoltage, and overcurrent protection circuit 213 are required to be arranged to process the power supply, and then the power supply is processed into a clean 24V power supply, and then the clean 24V power supply is converted and output by the power management unit 214 and provided to each unit.

The input unit 22 comprises a noise elimination switch 221, an emergency switch 222, a leakage switch 223, a temperature control switch 224 and an alarm sensor 225, a plurality of sensors are adopted for sampling in turn, alarm signal data are output in real time, and the alarm signal comprises: the device comprises a lithium ion battery in a battery box or a super capacitor box, wherein the lithium ion battery or the super capacitor box is internally provided with a plurality of circuits, and the circuits are connected with each other in a wired or wireless mode.

In order to prevent external interference, the MCU processing unit adopts photoelectric isolation processing to an external interface, and signals of the input unit firstly carry out jitter filtering on differential mode interference signals and then are sent to the photoelectric isolation for further processing.

In this embodiment, the MCU processing unit 23 selects the ideological semiconductor automobile-level chip STM32F103, and in order to further improve the program reliability, the MCU processing unit 23 is further connected to a watchdog unit 26 for detecting an exception and resetting, so as to effectively detect the conditions of a program crash, an operation timeout, an interrupted running flight, and the like, and ensure the reliable operation of the program.

The human-computer interaction unit 24 includes a buzzer 241, a liquid crystal touch screen 242, a touch screen controller 243, a liquid crystal drive controller 244 and a touch screen interface, the MCU processing unit 23 gives an alarm on the liquid crystal touch screen 242 through the liquid crystal drive controller 243 and gives a prompt whether to extinguish a fire, inputs an instruction whether to extinguish a fire through the liquid crystal touch screen 242 and feeds the instruction back to the MCU processing unit 23 through the touch screen controller 243.

The buzzer adopts a 12V decibel alarm, and the liquid crystal touch screen selects a 2.8-inch highlight LCD display to ensure that the liquid crystal touch screen is clearly visible in sunlight; meanwhile, the interface of the touch screen is connected with the ESD electrostatic protection circuit 245, the maximum inhibition capacity is 16KV, the static accumulation of a dry environment can be effectively eliminated, and the phenomenon that the static damages an internal circuit or interferes with the operation of the internal circuit when a user clicks the touch screen is prevented.

The man-machine interaction unit also comprises a backup control key, and when the touch screen is broken, the fire can be extinguished through the backup control key without influencing the normal use of the equipment.

The power supply of the power supply processing unit is provided by a vehicle battery, and when the vehicle battery loses power supply capacity, the power supply of the power supply processing unit is provided by a standby battery. The vehicle battery generally adopts a lithium ion battery or a super capacitor. In this embodiment, the power processing unit 21, the input unit 22, the MCU processing unit 23, the human-computer interaction unit 24, and the output unit 25 are all disposed on a circuit board, the circuit board is mounted in the box body 1, and the box body 1 is further provided with an interlayer 20 for placing a backup battery, so as to facilitate replacement of the backup battery.

The working principle is as follows: when the input unit collects data of high temperature caused by short circuit inside a lithium ion battery or a super capacitor in a battery box or free ion particles released by thermal expansion of the battery or the super capacitor and abnormal temperature rise caused by extrusion and puncture of an external force, the MCU processing unit carries out early fire analysis, when the temperature reaches early fire warning information, the human-computer interaction unit sends an alarm signal to a driving area, and the driver analyzes and judges the alarm signal and timely eliminates and solves the fault through a touch screen or a backup control key. When the early fire condition develops to the conflagration, MCU processing unit sends the instruction of putting out a fire to output unit automatically, and the fire valve is opened and is carried out automatic fire extinguishing, sends reputation fire alarm signal to the driver's area simultaneously.

Claims

1. On-vehicle fire alarm protects automatic fire extinguishing device, including the box, install fire extinguishing tank and controller in the box, its characterized in that, the controller includes power processing unit, input unit, MCU processing unit, human-computer interaction unit and output unit, wherein, MCU processing unit links to each other with input unit, human-computer interaction unit and output unit respectively, MCU processing unit gathers each on-off state in the input unit and the input signal in the human-computer interaction unit, and one side sends the automatic fire extinguishing signal to the output unit, and the other side sends the warning suggestion to the human-computer interaction unit.

2. The vehicle-mounted fire alarm protection automatic fire extinguishing device according to claim 1, wherein the output unit comprises a fire valve, a puncture needle capable of puncturing a membrane is arranged in the fire valve, a blasting agent is arranged at one end of the puncture needle in the fire valve, a firing cable is arranged close to the blasting agent, and the firing cable is connected with the MCU processing unit.

3. The vehicle-mounted fire alarm protection automatic fire extinguishing device according to claim 2, wherein a distributor is further arranged in the box body, the distributor is respectively provided with a first through hole, a second through hole and a third through hole, the first through hole is communicated with the fire extinguishing tank through an opening and closing control mechanism, the second through hole is communicated with the first through hole, the second through hole and the third through hole correspond in number and are communicated with each other, a diaphragm is arranged at the end of the second through hole, the diaphragm is pressed by a threaded pipe with a through hole screwed in the second through hole, the fire extinguishing valve is arranged at the top end of the second through hole, a connecting block is arranged at the end of the fire extinguishing valve, and the fire extinguishing valve is connected to the end of the second through hole in a sealing manner through the connecting block.

4. The vehicle-mounted fire alarm protection automatic fire extinguishing device according to claim 3, wherein the opening and closing control mechanism comprises a valve core connected with an opening of the fire extinguishing tank, a feed port, a discharge port and a control head are arranged on the valve core, a spring is arranged in the valve core, the feed port is connected with the fire extinguishing tank, the discharge port is connected with a feed delivery pipeline, the other end of the feed delivery pipeline is connected with the first through hole, a diaphragm is arranged in the control head, the spring is pressed against the diaphragm in a contracting and pressing state, and the fire extinguishing valve is correspondingly connected to the control head.

5. The vehicular fire alarm protection automatic fire extinguishing device according to claim 4, wherein a pressure reducing one-way valve is further arranged in the valve core.

6. The on-vehicle fire alarm protection automatic fire extinguishing device according to claim 2, wherein an abnormality detection circuit is connected to the fire extinguishing valve, and when the fire extinguishing valve is open or the driving is abnormal, the abnormality detection circuit sends an abnormality report to the MCU processing unit.

7. The vehicle-mounted fire alarm protection automatic fire extinguishing device according to claim 1, wherein the power supply processing unit comprises an EMI filter, a surge protection circuit, an overvoltage, undervoltage and overcurrent protection circuit and a power supply management unit, and after the EMI filter, the surge protection circuit and the overvoltage, undervoltage and overcurrent protection circuit process the power supply, the power supply management unit converts the output to provide the output to each unit.

8. The vehicle-mounted fire alarm protection automatic fire extinguishing device according to claim 1, wherein the MCU processing unit is further connected with a watchdog unit for detecting abnormality and resetting.

9. The vehicle-mounted fire alarm protection automatic fire extinguishing device according to claim 1, wherein the input unit comprises a noise elimination switch, an emergency switch, a leakage switch, a temperature control switch and an alarm sensor.

10. The vehicle-mounted fire alarm protection automatic fire extinguishing device according to claim 2, 6 or 9, wherein the MCU processing unit adopts photoelectric isolation processing for external interfaces.

11. The vehicle-mounted fire alarm protection automatic fire extinguishing device according to claim 1, wherein the human-computer interaction unit comprises a buzzer, a liquid crystal touch screen, a touch screen controller, a liquid crystal drive controller and a touch screen interface, the MCU processing unit alarms on the liquid crystal touch screen through the liquid crystal drive controller and gives a prompt whether to extinguish the fire, the liquid crystal touch screen inputs a command whether to extinguish the fire and the touch screen controller feeds the command back to the MCU processing unit, and the touch screen interface is connected with the ESD electrostatic protection circuit.

12. The vehicle-mounted fire alarm protection automatic fire extinguishing device according to claim 1, wherein the power supply of the power supply processing unit is provided by a vehicle battery, and when the vehicle battery loses power supply capacity, the power supply of the power supply processing unit is provided by a backup battery.

13. The vehicle-mounted fire alarm protection automatic fire extinguishing device according to claim 12, wherein the power supply processing unit, the input unit, the MCU processing unit, the human-computer interaction unit and the output unit are all arranged on a circuit board, the circuit board is mounted in a box body, and an interlayer for placing a standby battery is further arranged in the box body.