CN107469257A - A kind of vehicle battery box early warning fire extinguishing system and method - Google Patents
A kind of vehicle battery box early warning fire extinguishing system and method Download PDFInfo
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- CN107469257A CN107469257A CN201610974300.9A CN201610974300A CN107469257A CN 107469257 A CN107469257 A CN 107469257A CN 201610974300 A CN201610974300 A CN 201610974300A CN 107469257 A CN107469257 A CN 107469257A
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- fire
- battery case
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- early warning
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Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/07—Fire prevention, containment or extinguishing specially adapted for particular objects or places in vehicles, e.g. in road vehicles
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
Abstract
The invention discloses a kind of vehicle battery box early warning fire extinguishing system, detecting module and fire suppression module are set in battery case, detection includes smokescope sensor, gas concentration sensor, temperature sensor, and control module obtains detectable signal from detecting module and controls fire suppression module fire extinguishing according to the detectable signal.Vehicle battery box early warning fire extinguishing system proposed by the present invention, detection device is set in battery case, multiple indexs such as the smokescope in battery case, designated gas concentration, environment temperature are detected by detection device, realize and the various dimensions of fire hazard environment in battery case are monitored in real time, so that it is guaranteed that find the abnormal conditions such as short circuit, heating in time when battery case works, early stage quick response occurs in fire, and fire control is automatically performed inside battery case, it is ensured that the security that battery case uses.
Description
Technical field
The present invention relates to vehicle battery box fire-fighting technique field, more particularly to a kind of vehicle battery box early warning fire extinguishing system and
Method.
Background technology
As new-energy automobile is widely popularized, the safety and reliability of battery is particularly critical.Recent years power lithium battery
The query that the security in pond is subject to is more and more, and the popularization and application of pure electric vehicle and hybrid electric vehicle cause vehicle auto-ignition event
The battery case of increase, especially new energy bus especially causes concern safely.The burning of battery case can cause casualties and
Larger economic loss, install the detection of reserve battery case additional for New-energy electric vehicle and extinguishing device is imperative.Power lithium
The main reason for battery catches fire, includes：1. battery unit discharge and recharge is uneven, battery unit deterioration is caused to accelerate；2. short circuit hair
Heat；Thermal shock caused by radiating efficiency is low when 3. battery works；4. battery is caused to damage by external force, electrolyte leakage etc. is caused.
Because power lithium battery Pool fire is triggered by a series of electrochemical reactions, and these electrochemical reaction rates are very fast, during burning
Some battery components can be decomposed to form oxide, and combustion reaction can be also supported in the environment of no oxygen.According to power
The structure of battery, wrapped up by sheathing material outside the battery core of electrokinetic cell, extinguishing chemical can not typically directly act on inside battery.
In addition, the fire extinguishing difficult point of power lithium battery box is that inner space gap is narrower, dry powder extinguisher is difficult to effectively cover, and water system is gone out
Firearm can trigger short circuit not to be suitable for battery case, and other gas fire extinguishers are then due to the limitation of volume and safety, it is difficult to install
On automobile.
The content of the invention
To solve technical problem present in background technology, the present invention proposes a kind of vehicle battery box early warning fire extinguishing system.
A kind of vehicle battery box early warning fire extinguishing system proposed by the present invention, including：Detecting module, fire suppression module, control mould
Block；
Detecting module is located in battery case, and detection includes smokescope sensor, gas concentration sensor, TEMP
Device, smokescope sensor are used to detect the smokescope in battery case, and gas concentration sensor, which is used to detect in battery case, to be referred to
Determine the concentration of gas, temperature sensor is used to detect the environment temperature in battery case；
Fire suppression module is located in battery case；
Control module is connected with detecting module and fire suppression module, and control module is used to obtain detectable signal simultaneously from detecting module
Fire suppression module fire extinguishing is controlled according to the detectable signal, the detectable signal includes smokescope signal, gas concentration signal, temperature
Spend signal.
Preferably, it is dense also to include rate temperature change signal, smokescope rate of change signal, gas for the detectable signal
Spend rate of change signal.
Preferably, in addition to alarm module, alarm module are connected with control module, and control module is according to the detectable signal
Control alarm module alarm.
Preferably, alarm module includes smog alarm unit, gas concentration alarm unit, temperature alarming unit.
Preferably, alarm module is arranged on meter panel of motor vehicle, and control module passes through CAN and detecting module and alarm
Module connects.
Preferably, smokescope sensor uses photoelectric mist concentration sensor；
And/or gas concentration sensor uses gas sensor；
And/or temperature sensor uses temperature sensing cable；
And/or fire suppression module uses hot aerosol fire extinguisher.
The present invention also proposes a kind of early warning fire extinguishing method according to above-mentioned vehicle battery box early warning fire extinguishing system, including following
Step：
S1, default environmental index threshold value, the fire indication threshold value include smoke density threshold value, designated gas concentration threshold
Value, environment temperature threshold value；
S2, the actual environment index in detection battery case, the actual environment index include actual smokescope, reality in real time
Border designated gas concentration, actual environment temperature；
S3, according to the actual environment index detected in S2 compared with default environmental index threshold value, judge in battery case
Fire whether occurs, and extinguishing device action is controlled according to the judged result.
Preferably, in S1, the fire indication threshold value also includes default smokescope rate of change threshold value, designated gas
Change in concentration rate-valve value, rate temperature change threshold value, and in S2, it is dense that the actual environment index also includes actual smog
Spend rate of change, actual designated gas change in concentration speed, actual temperature change speed.
Preferably, in S3, when actual smokescope is dense more than default smoke density threshold value, and/or actual designated gas
When degree is more than environment temperature threshold value more than default designated gas concentration threshold, and/or actual environment temperature, judge to send out in battery case
Light a fire calamity, and control extinguishing device to put out a fire；
When actual smokescope rate of change is more than default smokescope rate of change threshold value, and/or actual designated gas
Change in concentration speed is more than default designated gas change in concentration rate-valve value, and/or actual temperature change speed is more than default temperature
When spending rate of change threshold value, judge generation fire risk in battery case be present, and fire is sent by sound and/or light and warned
Report.
Preferably, selective combustion characteristic gas is as designated gas detectable concentration.
In the present invention, the vehicle battery box early warning fire extinguishing system that is proposed sets detection device in battery case, passes through spy
Survey device to detect multiple indexs such as the smokescope in battery case, designated gas concentration, environment temperature, realize to battery
The various dimensions of fire hazard environment monitor in real time in case, so that it is guaranteed that finding the abnormal feelings such as short circuit, heating in time when battery case works
Condition, early stage quick response occurs in fire, and fire control is automatically performed inside battery case, it is ensured that the peace that battery case uses
Quan Xing.
Brief description of the drawings
Fig. 1 is a kind of structural representation of vehicle battery box early warning fire extinguishing system proposed by the present invention.
Fig. 2 is a kind of flow chart of vehicle battery box early warning fire extinguishing method proposed by the present invention.
Embodiment
As illustrated in fig. 1 and 2, Fig. 1 is a kind of structural representation of vehicle battery box early warning fire extinguishing system proposed by the present invention,
Fig. 2 is a kind of flow chart of vehicle battery box early warning fire extinguishing method proposed by the present invention.
With reference to Fig. 1 and 2, a kind of vehicle battery box early warning fire extinguishing method proposed by the present invention, comprise the following steps：
S1, default environmental index threshold value, the fire indication threshold value include smoke density threshold value, designated gas concentration threshold
Value, environment temperature threshold value；
S2, the actual environment index in detection battery case, the actual environment index include actual smokescope, reality in real time
Border designated gas concentration, actual environment temperature；
S3, according to the actual environment index detected in S2 compared with default environmental index threshold value, judge in battery case
Fire whether occurs, and extinguishing device action is controlled according to the judged result.
In order to improve to the accuracy of environmental monitoring in battery case and the quick response of early stage, the fire occur in fire
Metrics-thresholds also include default smokescope rate of change threshold value, designated gas change in concentration rate-valve value, rate temperature change
Threshold value, and in S2, the actual environment index also includes actual smokescope rate of change, actual designated gas concentration becomes
Change speed, actual temperature change speed.
In a specific embodiment, in S3, when actual smokescope is more than default smoke density threshold value, and/or reality
When designated gas concentration is more than environment temperature threshold value more than default designated gas concentration threshold, and/or actual environment temperature, judge
Fire occurs in battery case, and controls extinguishing device to put out a fire；
When actual smokescope rate of change is more than default smokescope rate of change threshold value, and/or actual designated gas
Change in concentration speed is more than default designated gas change in concentration rate-valve value, and/or actual temperature change speed is more than default temperature
When spending rate of change threshold value, judge generation fire risk in battery case be present, and fire is sent by sound and/or light and warned
Report.
, can be using selective combustion characteristic gas as designated gas detectable concentration, to burning in other embodiments
Characteristic gas concentration carries out implementing monitoring, improves the degree of accuracy of judgement.
The present embodiment also proposes a kind of vehicle battery box early warning fire extinguishing system, including：Detecting module, fire suppression module, control
Module；
Detecting module is located in battery case, and detection includes smokescope sensor, gas concentration sensor, TEMP
Device, smokescope sensor are used to detect the smokescope in battery case, and gas concentration sensor, which is used to detect in battery case, to be referred to
Determine the concentration of gas, temperature sensor is used to detect the environment temperature in battery case；
Fire suppression module is located in battery case；
Control module is connected with detecting module and fire suppression module, and control module is used to obtain detectable signal simultaneously from detecting module
Fire suppression module fire extinguishing is controlled according to the detectable signal, the detectable signal includes smokescope signal, gas concentration signal, temperature
Spend signal.
In a specific embodiment, the detectable signal also includes rate temperature change signal, smokescope rate of change
Signal, gas concentration rate of change signal, by the monitoring to rate of change, the sensitivity of monitoring is improved, when temperature, smog are dense
When degree, designated gas concentration quickly raise, show the risk that fire occurs in battery case be present.
In other embodiments, in addition to alarm module, alarm module are connected with control module, control module root
According to detectable signal control alarm module alarm, further, alarm module includes smog alarm unit, gas concentration alarm list
Member, temperature alarming unit.
In other embodiments, alarm module is arranged on meter panel of motor vehicle, control module by CAN with
Detecting module is connected with alarm module, and when the system is arranged on vehicle, the CAN using vehicle itself is connected
Connect, be easy to the system connecting wiring, without being destroyed to vehicle part existing structure.
In other embodiments, smokescope sensor uses photoelectric mist concentration sensor, to lithium battery
Bulky grain smog is detected caused by incipient fire, and response speed is faster；
In other embodiments, gas concentration sensor uses gas sensor, can be directed to the burning specified
The characteristic gas concentration of product is detected, high sensitivity；
In other embodiments, temperature sensor uses temperature sensing cable, can be arranged in and short trouble easily occurs
Position, abnormal heating is alarmed, detection range is wider, by detection be changed to line detection；
In other embodiments, fire suppression module uses hot aerosol fire extinguisher, and suitable for putting out electric fire, gas is molten
Glue particulate is non-conductive, and in battery surface noresidue, extinguishing mechanism includes inert gas asphyxia, combustion reaction chain blocks and heat absorption three
Weight effect.
In the specific work process of the vehicle battery box early warning fire extinguishing system of the present embodiment, environment is preset in the control module
Metrics-thresholds, the fire indication threshold value include smoke density threshold value, designated gas concentration threshold, environment temperature threshold value, passed through
Photoelectric mist concentration sensor detects the actual smokescope in battery case in real time, and battery case is detected in real time by gas sensor
The combustion characteristic gas concentration inside specified, and the actual environment temperature in battery case is detected by temperature sensing cable in real time；Then,
Control module compared with default environmental index threshold value, judges whether sent out in battery case according to the actual environment index detected
Light a fire calamity, and extinguishing device action is controlled according to the judged result.
In a specific embodiment, when actual smokescope is more than default smoke density threshold value, and/or actual designated gas
When concentration is more than environment temperature threshold value more than default designated gas concentration threshold, and/or actual environment temperature, judge in battery case
Generation fire, and control extinguishing device to put out a fire；
When actual smokescope rate of change is more than default smokescope rate of change threshold value, and/or actual designated gas
Change in concentration speed is more than default designated gas change in concentration rate-valve value, and/or actual temperature change speed is more than default temperature
When spending rate of change threshold value, judge generation fire risk in battery case be present, and fire is sent by sound and/or light and warned
Report.
In the present embodiment, the vehicle battery box early warning fire extinguishing system proposed, sets detection device in battery case, leads to
Cross detection device to detect multiple indexs such as the smokescope in battery case, designated gas concentration, environment temperature, realization pair
The various dimensions of fire hazard environment monitor in real time in battery case, so that it is guaranteed that finding that short circuit, heating etc. are different in time when battery case works
Reason condition, early stage quick response occurs in fire, and fire control is automatically performed inside battery case, it is ensured that battery case uses
Security.
, can be in the every of diverse location in the specific design for the vehicle battery box early warning fire extinguishing system that the present embodiment proposes
One detecting module is set in individual battery case, and one corresponding alarm module is set for each detecting module, when an electricity
When occurring abnormal in the case of pond, corresponding alarm module can send alarm, and staff, which can quick and precisely learn, occurs exception
Battery case position.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its
Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.
Claims (10)
- A kind of 1. vehicle battery box early warning fire extinguishing system, it is characterised in that including：Detecting module, fire suppression module, control module；Detecting module is located in battery case, and detection includes smokescope sensor, gas concentration sensor, temperature sensor, cigarette Mist concentration sensor is used to detect the smokescope in battery case, and gas concentration sensor is used to detect designated gas in battery case Concentration, temperature sensor is used to detect environment temperature in battery case；Fire suppression module is located in battery case；Control module is connected with detecting module and fire suppression module, and control module is used to obtain detectable signal and basis from detecting module The detectable signal control fire suppression module fire extinguishing, the detectable signal include smokescope signal, gas concentration signal, temperature letter Number.
- 2. vehicle battery box early warning fire extinguishing system according to claim 1, it is characterised in that the detectable signal also includes Rate temperature change signal, smokescope rate of change signal, gas concentration rate of change signal.
- 3. vehicle battery box early warning fire extinguishing system according to claim 1, it is characterised in that also including alarm module, report Alert module is connected with control module, and control module controls alarm module to alarm according to the detectable signal.
- 4. vehicle battery box early warning fire extinguishing system according to claim 3, it is characterised in that alarm module includes smog report Alert unit, gas concentration alarm unit, temperature alarming unit.
- 5. vehicle battery box early warning fire extinguishing system according to claim 3, it is characterised in that alarm module is arranged on vehicle On instrument board, control module is connected by CAN with detecting module and alarm module.
- 6. vehicle battery box early warning fire extinguishing system according to claim 1, it is characterised in that smokescope sensor uses Photoelectric mist concentration sensor；And/or gas concentration sensor uses gas sensor；And/or temperature sensor uses temperature sensing cable；And/or fire suppression module uses hot aerosol fire extinguisher.
- A kind of 7. early warning fire extinguishing method of vehicle battery box early warning fire extinguishing system according to claim 1-6, it is characterised in that bag Include the following steps：S1, default environmental index threshold value, the fire indication threshold value include smoke density threshold value, designated gas concentration threshold, ring Border temperature threshold；S2, in real time the actual environment index in detection battery case, the actual environment index include actual smokescope, actually referred to Determine gas concentration, actual environment temperature；S3, according to the actual environment index detected in S2 compared with default environmental index threshold value, judge in battery case whether Generation fire, and extinguishing device action is controlled according to the judged result.
- 8. vehicle battery box early warning fire extinguishing system according to claim 7, it is characterised in that in S1, the fire refers to Marking threshold value also includes default smokescope rate of change threshold value, designated gas change in concentration rate-valve value, rate temperature change threshold Value, and in S2, the actual environment index also includes actual smokescope rate of change, actual designated gas change in concentration Speed, actual temperature change speed.
- 9. vehicle battery box early warning fire extinguishing system according to claim 8, it is characterised in that in S3, when actual smog Concentration is more than default smoke density threshold value, and/or actual designated gas concentration be more than default designated gas concentration threshold, and/or When actual environment temperature is more than environment temperature threshold value, judge fire occurs in battery case, and control extinguishing device to put out a fire；When actual smokescope rate of change is more than default smokescope rate of change threshold value, and/or actual designated gas concentration Rate of change is more than default designated gas change in concentration rate-valve value, and/or actual temperature change speed becomes more than preset temperature When changing rate-valve value, judge generation fire risk in battery case be present, and alarm of fire is sent by sound and/or light.
- 10. vehicle battery box early warning fire extinguishing system according to claim 7, it is characterised in that selective combustion characteristic gas As designated gas detectable concentration.
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