CN206818606U - Qualitative and quantitative analysis device for gas generated by electric automobile power battery system in fire - Google Patents

Qualitative and quantitative analysis device for gas generated by electric automobile power battery system in fire Download PDF

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Publication number
CN206818606U
CN206818606U CN201720392235.9U CN201720392235U CN206818606U CN 206818606 U CN206818606 U CN 206818606U CN 201720392235 U CN201720392235 U CN 201720392235U CN 206818606 U CN206818606 U CN 206818606U
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gas
qualitative
corrosion inhibiting
quantitative analysis
explosion
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朱顺兵
周征
罗炜涛
朱明星
李明鑫
何琰儒
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Nanjing Tech University
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Nanjing Tech University
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Abstract

The utility model relates to a qualitative and quantitative analysis device for gas generated by an electric automobile power battery system in fire, which structurally comprises an air inlet, a first vacuum pump, an air outlet, a second vacuum pump, a regulator, a flowmeter, a current stabilizer, a pressure gauge, an anti-corrosion gas pool, a temperature sensor, a temperature controller, a Fourier transform infrared spectrometer and an explosion-proof box; wherein, the air inlet, the first vacuum pump, the exhaust port, the second vacuum pump, the regulator, the flowmeter, the current stabilizer, the pressure gauge, the anti-corrosion gas pool, the temperature sensor, the temperature controller and the Fourier transform infrared spectrometer are arranged in the explosion-proof box. The advantages are that: 1) the test has quick response and short test time; 2) when the mixed gas is tested in a catastrophe environment, the field test can be realized; 3) continuous sampling and online testing can be realized, and the components of the gas to be tested are not damaged; 4) long service life and portable operation.

Description

Electric automobile power battery system fire produces the qualitative and quantitative analysis device of gas
Technical field
The utility model relates to electric automobile power battery system fire produce gas qualitative and quantitative analysis device, More particularly to a kind of analytical equipment for being applicable to electric automobile fire hazard environment scene, belong to Safety technology field.
Background technology
China is in a critical stage of new-energy automobile industry development, under this main trend, new-energy automobile Safety issue will become more sensitive;The security incident of new-energy automobile have in it cause specific, due to as dynamic The battery in power source is the high-energy carrier of very " active ", and thermal runaway will occur at a lower temperature, and causes its hair The reason for heat is out of control is very strange, hard to guard against;Domestic and international experimental study it has been shown that lithium ion battery have it is very high Fire risk, moment just finishes the oxidation reaction of lithium metal in fact during battery constantly heating, and real energy exists In electric energy and chemical energy that other materials include;Wherein there are the alkene such as phosphorus pentafluoride, phosphine, hydrogen fluoride, hydrogen, alkane, ether etc. Tens kinds of poisonous and harmful substances, these are only the basic reason of cells burst and resume combustion;Therefore, heat occurs to lithium ion battery to lose The mixed gas discharged during control carries out gas analysis and detection, can effectively contain the generation of electric automobile fire explosion.
Quantitative analysis to toxic and harmful gas is frequently with electrochemical assay, gas chromatography and infra-red sepectrometry etc.. Electrochemical method is due to using liquid electrolyte, therefore onsite application is inconvenient;Gas chromatography passes through the development in a century, Because of its high sensitivity, separating degree is good, quantitative analysis precision is high(Higher than 1%), have become a kind of widely used analysis side Method;But chromatographic isolation needs longer time, particularly when sample functional group difference, the choosing of detector and analytical column Select relatively difficult, so the quantitative analysis for biased sample, chromatogram analysis method is worthless, and infra-red sepectrometry has fast The characteristics of speed, non-destructive, and compared with Raman spectroscopy, nuclear magnetic resoance spectrum spectral method and mass spectrography etc., its spectrum money Material is the abundantest, ripe;Because gas is in middle infrared band (4000-400cm-1) in have an obvious absorption, and analyze process It need not sample, separate, therefore mid-infrared light spectrometry is to detection gas, is especially a kind of letter for multicomponent mixed gas Just, easy measuring method, the fields such as environmental monitoring, oil, chemical industry, material are now widely used for;It is but currently used Spectrometer is harsh under test gas and operating environment requirements, complex operation, gas absorption spectrum line overlap, quantitative detectable concentration scope Narrow, the gaseous species of detection wait less all limits application of the spectrometer in field of lithium ion battery, current domestic and international lithium-ion electric Pond is also no to realize online Multi-Component Gas Analyzing using spectral technique.
Utility model content
The utility model provides the qualitative and quantitative analysis device that a kind of electric automobile power battery system fire produces gas, It is harsh under test gas and operating environment requirements its object is to solve existing analysis and detection device, the problems such as complex operation.
Technical solution of the present utility model:Electric automobile power battery system fire produces the qualitative, quantitative point of gas Analysis apparatus, its structure include air inlet A, the first vavuum pump a, exhaust outlet B, the second vavuum pump b, adjuster 1, flowmeter 2, current stabilization It is device 3, pressure gauge 4, corrosion inhibiting gas pond 5, temperature sensor 6, temperature controller 7, FTIS, explosion-proof Case 21;Wherein, air inlet A, the first vavuum pump a, exhaust outlet B, the second vavuum pump b, adjuster 1, flowmeter 2, constant-current stabilizer 3, Pressure gauge 4, corrosion inhibiting gas pond 5, temperature sensor 6, temperature controller 7, FTIS are in explosion-proof tank In 21;Air inlet A and the first vavuum pump a, adjuster 1, flowmeter 2, constant-current stabilizer 3, pressure gauge 4, corrosion inhibiting gas pond 5 enter Gas port is sequentially connected in series;The gas outlet in corrosion inhibiting gas pond 5 is connected by the second vavuum pump b with exhaust outlet B;Corrosion inhibiting gas pond 5 Optical inlet connect with the optical outlet of FTIS, the mouth to be detected in corrosion inhibiting gas pond 5 with Fu The detection mouth of leaf transformation infrared spectrometer connects;Corrosion inhibiting gas pond 5 is connected with temperature sensor 6, temperature sensor 6 and temperature Controller 7 is connected.
The advantages of the utility model:
1)Test can be that electric automobile fire incident strives for the quality time with the advantage that response is fast, the testing time is short;
2)When testing mixed gas under Disastrous environment, complete machine is explosion-proof to realize on-the-spot test;
3)Continuous sampling, online test can be achieved, do not destroy under test gas composition;
4)Etch-proof gas cell, multinomial function of seismic resistance set, extend instrument service life, can realize portable behaviour Make.
Brief description of the drawings
Accompanying drawing 1 is the structure main view for the qualitative and quantitative analysis device that electric automobile power battery system fire produces gas Figure.
Accompanying drawing 2 is that the structure for the qualitative and quantitative analysis device that electric automobile power battery system fire produces gas is overlooked Figure.
A is that air inlet, a are that the first vavuum pump, B are that exhaust outlet, b are the second vavuum pumps, 1 are adjusters, 2 are stream in accompanying drawing Gauge, 3 be constant-current stabilizer, 4 be pressure gauge, 5 be corrosion inhibiting gas pond, 6 be temperature sensor, 7 be temperature controller, 8 be light Source, 9 be interferometer, 10 be detector, 11 be data acquisition module, 12 be qualitative and quantitative analysis module, 13 be data storage mould Block, 14 be host power switch, 15 be power supply indicator, 16 be display screen, 17 be gas componant measure button, 18 be gaseous mixture The early warning of body explosion hazard, 19 be explosion hazard control button, 20 be explosion-proof cushion rubber, 21 be explosion-proof tank.
Embodiment
Electric automobile power battery system fire produce gas qualitative and quantitative analysis device, its structure include air inlet A, First vavuum pump a, exhaust outlet B, the second vavuum pump b, adjuster 1, flowmeter 2, constant-current stabilizer 3, pressure gauge 4, corrosion inhibiting gas Pond 5, temperature sensor 6, temperature controller 7, FTIS, explosion-proof tank 21;Wherein, air inlet A, first true Empty pump a, exhaust outlet B, the second vavuum pump b, adjuster 1, flowmeter 2, constant-current stabilizer 3, pressure gauge 4, corrosion inhibiting gas pond 5, temperature Degree sensor 6, temperature controller 7, FTIS are in explosion-proof tank 21;Air inlet A and the first vavuum pump A, adjuster 1, flowmeter 2, constant-current stabilizer 3, pressure gauge 4, the air intake in corrosion inhibiting gas pond 5 are sequentially connected in series;Corrosion inhibiting gas The gas outlet in pond 5 is connected by the second vavuum pump b with exhaust outlet B;The optical inlet in corrosion inhibiting gas pond 5 and Fourier transformation are red The optical outlet of external spectrum instrument connects, the detection mouth of the mouth and FTIS to be detected in corrosion inhibiting gas pond 5 Connect;Corrosion inhibiting gas pond 5 is connected with temperature sensor 6, and temperature sensor 6 is connected with temperature controller 7.
Described FTIS include light source 8, interferometer 9, detector 10, data acquisition module 11, Qualitative and quantitative analysis module 12, data memory module 13;Wherein, the optical outlet of light source 8 and FTIS Between be interferometer 9, the infrared light that light source 8 is sent is by obtaining interference light after interferometer 9, interference light is from Fourier transform infrared The optical outlet of spectrometer enters corrosion inhibiting gas pond 5 after projecting;The mouth to be detected in corrosion inhibiting gas pond 5 and detector 10, number It is sequentially connected in series according to acquisition module 11, qualitative and quantitative analysis module 12, data memory module 13.
The air inlet A and the first vavuum pump a, adjuster 1, flowmeter 2, constant-current stabilizer 3, pressure gauge 4, etchant gas pond 5 air intake is sequentially connected in series by gas piping.
Between the gas outlet in the corrosion inhibiting gas pond 5 and the second vavuum pump b, between the second vavuum pump b and exhaust outlet B It is connected by gas piping.
Pass through between the corrosion inhibiting gas pond 5 and temperature sensor 6, between temperature sensor 6 and temperature controller 7 Nichrome wire is connected.
Light path is 10m between the gas outlet in the corrosion inhibiting gas pond 5 and the mouth to be detected in corrosion inhibiting gas pond 5.
Described data acquisition module 11, qualitative and quantitative analysis module 12, data memory module 13 collectively form spectrum point Analyse work station.
The outside of the explosion-proof tank 21 is provided with host power switch 14, power supply indicator 15, display screen 16, gas componant Determine button 17, Mixed Gases Explosion danger early warning 18, explosion hazard control button 19, explosion-proof cushion rubber 20;Spectrum analysis Work station is connected by internal bus with positioned at the exterior display screen 16 of explosion-proof tank 21, there is input/output interface use outside explosion-proof tank 21 Information is exchanged and controlled between spectrum analysis work station and display screen 16;Power switch 14, power supply indicator 15, display screen 16th, gas componant measure button 17, Mixed Gases Explosion danger early warning 18, explosion hazard control button 19 are distributed in display Around screen 16;When turning on the power switch 14, power supply indicator 15 is bright;Gas componant measure button 17 is opened, starts measure fire Gas componant caused by calamity, if gas componant reaches finite concentration(UEL), Mixed Gases Explosion danger early warning 18 opens Begin to flash, now opening explosion hazard control button 19 prevents from exploding.
The qualitative and quantitative analysis device that described electric automobile power battery system fire produces gas presses function zoning Including air path part, light path part, circuit part;Wherein air path part includes air inlet A, the first vavuum pump a, exhaust outlet B, the Two vavuum pump b, adjuster 1, flowmeter 2, constant-current stabilizer 3, pressure gauge 4, corrosion inhibiting gas pond 5, temperature sensor 6, temperature control Device 7 processed;Light path part includes light source 8, interferometer 9, detector 10, and the infrared light that light source 8 is sent becomes to interfere through interferometer 9 Light, interferes the under test gas in light irradiation corrosion inhibiting gas pond 5, and detector 10 obtains interference pattern;Circuit part is adopted including data Collect module 11, qualitative and quantitative analysis module 12, data memory module 13;The air path part and other parts isolation design, solely It is equipped with the independent hatch door of gas circuit;Light path part is independently provided with the independent hatch door of light path;Circuit part is independently provided with the independent hatch door of circuit.
Described gas piping material is polytetrafluoroethylene (PTFE)(PTFE)Material, the material can be efficiently reduced in gas piping Absorption to gas, the gas in pipeline is each led to gas cell, reduce error caused by gaseous spectrum detection.
The light source 8 is GLOBAR light sources, be characterized in power is big, heat radiation is low, air cooling, long lifespan, change it is easy.
The interferometer 9 is a part for Nicolet-Nexus870 FTISs, by horizontal glass, is moved Mirror, beam splitter and detector composition, horizontal glass is fixed, and index glass can move forward and backward along mirror direction of principal axis, between horizontal glass and index glass A beam splitter in 45° angle is placed, beam splitter is KBr materials.
The detector 10 is DTGS pyroelectricity detectors, and condition of work is normal temperature, scope of application 4000-400cm-1
Described data acquisition module 11 is EM200 remote data acquisition modules, and with radiating, small, message transmission rate is fast The characteristics of, gaseous spectrum data are gathered, and the data to being gathered pre-process, and reduce disturbing factor to withdrawing spectral information Influence.
Described qualitative and quantitative analysis module 12 establishes qualitative and quantitative analysis model by known data, using the model Unknown sample is predicted, qualitative and quantitative analysis is carried out to tested gas, and provide analysis result.
Described data memory module 13 includes the MC9S12UF32 single-chip microcomputers of Freescale companies, qualitative for storing Quantitative analysis results simultaneously are used to printing and storing various data.
Described display screen 16 is LCDs, and input/output interface is located at the right side side outside explosion-proof tank 21.
The left and right sides of described explosion-proof tank 21 is respectively provided with antiexplosion adhesive circle 20.
During operation, host power switch 14 is opened, power supply indicator 15 is lighted, and system starts, and display screen 16 is homepage, Pressing difference in functionality button selects this to operate purpose, including:Gas componant measure button 17, Mixed Gases Explosion are dangerous Property early warning 18, explosion hazard control button 19;Open gas componant measure button 17, start determine fire caused by gas into Point, if gas componant reaches finite concentration(UEL), Mixed Gases Explosion danger early warning 18 starts to flash, now opens Explosion hazard control button 19 prevents from exploding.
Electric automobile power battery system fire produces the qualitative and quantitative analysis device of gas, and the first vavuum pump a is by catastrophe Mixed gas is pumped into constant-current stabilizer 3 by air inlet A in the presence of adjuster 1 and flowmeter 2 afterwards, by drying process, Corrosion inhibiting gas pond 5 is passed through after regime flow, using temperature controller 7 and pressure gauge 4 make temperature in corrosion inhibiting gas pond 5 and Stress control constantly empties under a certain environment, and by the second vavuum pump b, is discharged by exhaust outlet B, light source 8 is sent infrared Light obtains interference light through the modulation of interferometer 9, and interference light reaches detector 10 by sample and becomes electric signal, draws interference pattern, by Data acquisition module 11 and qualitative and quantitative analysis module 12 obtain the infrared spectrogram of sample;Data acquisition module 11 gathers gas Spectroscopic data, and the data to being gathered pre-process, and reduce influence of each disturbing factor to withdrawing spectral information;It is qualitative fixed Measure analysis module 12 and qualitative and quantitative analysis is carried out to tested gas, and provide analysis result;Data memory module 13 is mainly used to Show above-mentioned qualitative and quantitative analysis result and print and store various data.
Electric automobile power battery system fire produces the qualitative and quantitative analysis device of gas, during gas collecting, it is contemplated that The gas of residual in pipeline be present, first have to vacuumize system pipeline and corrosion inhibiting gas pond 5 using the second vavuum pump b Processing, after the registration of pressure gauge 4 is 0 and stabilization, by controlling to adjust device 1 and flowmeter 2, sample gas under study is pumped into surely Device 3 is flowed, by drying process, corrosion inhibiting gas pond 5 is passed through after regime flow, using temperature sensor 6 by corrosion inhibiting gas Temperature control in pond is at 30 DEG C, and the infrared light that light source 8 is sent obtains interference light through the modulation of interferometer 9, and interference light passes through sample Reach detector 10 and become electric signal, draw interference pattern, sample is obtained by data acquisition module 11 and qualitative and quantitative analysis module 12 The infrared spectrogram of product;
The utility model, which realizes, common are malicious pernicious gas and explosive gas PF to electric automobile fire5、HF、H2、 CO、CO2, etc. multiple gases quantitatively detect.
It is described further with reference to specific embodiment.
Embodiment
Electric automobile power battery system fire produce gas qualitative and quantitative analysis device, its structure include air inlet A, First vavuum pump a, exhaust outlet B, the second vavuum pump b, adjuster 1, flowmeter 2, constant-current stabilizer 3, pressure gauge 4, corrosion inhibiting gas Pond 5, temperature sensor 6, temperature controller 7, FTIS, explosion-proof tank 21;Wherein, air inlet A, first true Empty pump a, exhaust outlet B, the second vavuum pump b, adjuster 1, flowmeter 2, constant-current stabilizer 3, pressure gauge 4, corrosion inhibiting gas pond 5, temperature Degree sensor 6, temperature controller 7, FTIS are in explosion-proof tank 21;Air inlet A and the first vavuum pump A, adjuster 1, flowmeter 2, constant-current stabilizer 3, pressure gauge 4, the air intake in corrosion inhibiting gas pond 5 are sequentially connected in series;Corrosion inhibiting gas The gas outlet in pond 5 is connected by the second vavuum pump b with exhaust outlet B;The optical inlet in corrosion inhibiting gas pond 5 and Fourier transformation are red The optical outlet of external spectrum instrument connects, the detection mouth of the mouth and FTIS to be detected in corrosion inhibiting gas pond 5 Connect;Corrosion inhibiting gas pond 5 is connected with temperature sensor 6, and temperature sensor 6 is connected with temperature controller 7.
Described FTIS is Nicolet-Nexus870 FTISs.
The air inlet A and the first vavuum pump a, adjuster 1, flowmeter 2, constant-current stabilizer 3, pressure gauge 4, etchant gas pond 5 air intake is sequentially connected in series by gas piping.
Between the gas outlet in the corrosion inhibiting gas pond 5 and the second vavuum pump b, between the second vavuum pump b and exhaust outlet B It is connected by gas piping.
Pass through between the corrosion inhibiting gas pond 5 and temperature sensor 6, between temperature sensor 6 and temperature controller 7 Nichrome wire is connected.
Light path is 10m between the gas outlet in the corrosion inhibiting gas pond 5 and the mouth to be detected in corrosion inhibiting gas pond 5.
Described gas piping material is polytetrafluoroethylene (PTFE)(PTFE)Material, the material can be efficiently reduced in gas piping Absorption to gas, the gas in pipeline is each led to gas cell, reduce error caused by gaseous spectrum detection.
The left and right sides of described explosion-proof tank 21 is respectively provided with an explosion-proof cushion rubber 20, prevents and treats the infringement of various equipment.

Claims (8)

1. electric automobile power battery system fire produce gas qualitative and quantitative analysis device, it is characterized in that including air inlet, First vavuum pump, exhaust outlet, the second vavuum pump, adjuster, flowmeter, constant-current stabilizer, pressure gauge, corrosion inhibiting gas pond, temperature Sensor, temperature controller, FTIS, explosion-proof tank;Wherein, air inlet, the first vavuum pump, exhaust outlet, Second vavuum pump, adjuster, flowmeter, constant-current stabilizer, pressure gauge, corrosion inhibiting gas pond, temperature sensor, temperature controller, FTIS is in explosion-proof tank;Air inlet and the first vavuum pump, adjuster, flowmeter, constant-current stabilizer, pressure Power table, the air intake in corrosion inhibiting gas pond are sequentially connected in series;The gas outlet in corrosion inhibiting gas pond passes through the second vavuum pump and exhaust outlet Connect;The optical inlet in corrosion inhibiting gas pond connects with the optical outlet of FTIS, corrosion inhibiting gas pond Mouth to be detected connect with the detection mouth of FTIS;Corrosion inhibiting gas pond is connected with temperature sensor, temperature Degree sensor is connected with temperature controller.
2. electric automobile power battery system fire according to claim 1 produces the qualitative and quantitative analysis device of gas, It is characterized in that described FTIS includes light source, interferometer, detector, data acquisition module, qualitative fixed Measure analysis module, data memory module;Wherein, between light source and the optical outlet of FTIS it is interference Instrument;The mouth to be detected in corrosion inhibiting gas pond and detector, data acquisition module, qualitative and quantitative analysis module, data memory module It is sequentially connected in series.
3. electric automobile power battery system fire according to claim 1 produces the qualitative and quantitative analysis device of gas, It is characterized in that the air inlet and the first vavuum pump, adjuster, flowmeter, constant-current stabilizer, pressure gauge, etchant gas pond enter gas Mouth is sequentially connected in series by gas piping;Between the gas outlet in the corrosion inhibiting gas pond and the second vavuum pump, the second vavuum pump with It is connected between exhaust outlet by gas piping.
4. electric automobile power battery system fire according to claim 1 produces the qualitative and quantitative analysis device of gas, It is characterized in that pass through nickel chromium triangle between the corrosion inhibiting gas pond and temperature sensor, between temperature sensor and temperature controller Alloy wire is connected.
5. electric automobile power battery system fire according to claim 1 produces the qualitative and quantitative analysis device of gas, It is characterized in that light path is 10 m between the gas outlet in the corrosion inhibiting gas pond and the mouth to be detected in corrosion inhibiting gas pond.
6. electric automobile power battery system fire according to claim 1 produces the qualitative and quantitative analysis device of gas, It is characterized in that be provided with outside the explosion-proof tank host power switch, power supply indicator, display screen, gas componant measure button, The early warning of Mixed Gases Explosion danger, explosion hazard control button, explosion-proof cushion rubber.
7. electric automobile power battery system fire according to claim 3 produces the qualitative and quantitative analysis device of gas, It is characterized in that described gas piping material is polytetrafluoroethylmaterial material.
8. electric automobile power battery system fire according to claim 1 produces the qualitative and quantitative analysis device of gas, It is characterized in that antiexplosion adhesive circle is respectively provided with left and right sides of described explosion-proof tank.
CN201720392235.9U 2017-04-14 2017-04-14 Qualitative and quantitative analysis device for gas generated by electric automobile power battery system in fire Active CN206818606U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111638189A (en) * 2020-06-04 2020-09-08 桂林理工大学 Spectrum test platform for low-carbon chemical combustion products
US11760258B1 (en) * 2020-05-13 2023-09-19 William S. Lerner Indicators to identify status and safety of vehicles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11760258B1 (en) * 2020-05-13 2023-09-19 William S. Lerner Indicators to identify status and safety of vehicles
CN111638189A (en) * 2020-06-04 2020-09-08 桂林理工大学 Spectrum test platform for low-carbon chemical combustion products

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