CN108548874A - A kind of shell with square aluminum lithium battery interior gas collection detection device and method - Google Patents
A kind of shell with square aluminum lithium battery interior gas collection detection device and method Download PDFInfo
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- CN108548874A CN108548874A CN201810283763.XA CN201810283763A CN108548874A CN 108548874 A CN108548874 A CN 108548874A CN 201810283763 A CN201810283763 A CN 201810283763A CN 108548874 A CN108548874 A CN 108548874A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/16—Injection
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N2030/022—Column chromatography characterised by the kind of separation mechanism
- G01N2030/025—Gas chromatography
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Abstract
The invention belongs to lithium ion battery detection technique fields, more particularly to a kind of shell with square aluminum lithium battery interior gas collection detection device, including battery case, gas-tight syringe, airbag, gas chromatograph, pressure sensor, vacuum pump and gas sampling valve, the gas-tight syringe can be set to the top of the battery case up or down, one end of the airbag is connect by the first connecting tube with the gas-tight syringe, the other end of the airbag is connect by the second connecting tube with the gas chromatograph, the pressure sensor and the vacuum pump are sequentially connected to first connecting tube, the gas sampling valve is set to second connecting tube.In addition, the present invention also provides a kind of shell with square aluminum lithium battery interior gas collection detection methods.Compared with the prior art, the device of the invention and method accurately can collect and detect the ingredient of shell with square aluminum lithium battery aerogenesis, solve finished product or semi-finished product aluminum-shell battery（Liquid injection hole is sealed）The problems such as gas collection is difficult and is interfered by air.
Description
Technical field
The invention belongs to lithium ion battery detection technique fields more particularly to a kind of shell with square aluminum lithium battery interior gas to receive
Collect detection device and method.
Background technology
Lithium ion battery with the high advantage of safe, long lifespan, energy density due to being increasingly becoming electric vehicle
With the important selection of energy storage field.Lithium ion battery can be divided into steel shell lithium battery, aluminum-shell lithium battery, cylindrical type by outer packing mode
Four major class such as lithium battery and flexible package lithium cell.Currently, aluminum-shell lithium battery is still in the technique direction to high rigidity and light weight
Development, this will provide technology more superior lithium battery product for market.
It is generally known that the service life of battery is one of important indicator of battery performance, and inside battery is working and was storing
Different degrees of gas may be will produce in journey, to seriously affect the service life of battery.For this purpose, those skilled in the art are logical
The component collection to lithium battery interior gas, detection and analysis are crossed, and in-depth study is carried out to its gas production mechanism, to find out
The reason of flatulence, convenient for targetedly being controlled in subsequent research and development and production.In the prior art, lithium battery gas componant
Chromatographic is generally used, extraction sample introduction can directly be punctured with airtight needle to soft-package battery, but to shell with square aluminum electricity
Pond, since shell is aluminium material, internal gas can only be evacuated under normal circumstances by liquid injection hole or explosion-proof valve.It needs to illustrate
That explosion-proof valve pressure resistance has certain compression strength generally in 0.7 ~ 1.1MPa, be difficult with common airtight needle directly puncture, and
Syringe and needle portion often have a small amount of air, may affect to the real gas of inside battery, with common
Big needle cylindrical unit product is quantitative also inaccurate.In addition, carrying out gas generally by unsealed liquid injection hole in the prior art
Transmission exists for example, disclosing a kind of shell with square aluminum lithium battery interior aerogenesis application No. is 201620946362.4 patent of invention
Line composition analysis device, pipeline are to transmit the gas that inside battery generates by liquid injection hole, but it is difficult to the battery sealed
To realize, also application No. is a kind of battery core aerogenesis detection device of 201611018365.2 patent of invention offer and detection sides
Method is to be studied the aerogenesis of lithium ion battery using gaschromatographic mass spectrometry method in situ, is also from fluid injection to hard shell battery
Real-time aerogenesis analysis is collected in hole, is equally not directed to the gas collection detection of sealed battery.
Therefore, it is necessary to the finished product to flatulence or semi-finished product shell with square aluminum lithium battery（Liquid injection hole is sealed）Carry out internal gas
The reason of collecting and detect, and then analyzing its flatulence.
Invention content
It is an object of the present invention to：In view of the deficiencies of the prior art, a kind of shell with square aluminum lithium battery interior is provided
Gas collection detection device, the accurate ingredient collected and detect shell with square aluminum lithium battery aerogenesis, solves finished product or semi-finished product aluminum hull
Battery（Liquid injection hole is sealed）The problems such as gas collection is difficult and is interfered by air.
To achieve the goals above, the present invention uses following technical scheme：
A kind of shell with square aluminum lithium battery interior gas collection detection device, including battery case, gas-tight syringe, airbag, gas-chromatography
Instrument, pressure sensor, vacuum pump and gas sampling valve, the gas-tight syringe can be set to the upper of the battery case up or down
Side, one end of the airbag are connect by the first connecting tube with the gas-tight syringe, and the other end of the airbag connects by second
It takes over and is connect with the gas chromatograph, the pressure sensor and the vacuum pump are sequentially connected to first connecting tube,
The gas sampling valve is set to second connecting tube.
It should be noted that in the present invention, shell with square aluminum lithium battery is placed in battery case, gas-tight syringe can move up and down
Ground is set to above battery case, and when inside battery gas to be collected, gas-tight syringe pushes down on, and stainless steel syringe needle quickly punctures electricity
Pond explosion-proof valve extracts the gas of inside battery, realizes and pumping is accurately positioned, a small amount of air is avoided to enter pipeline Interference Detection.Separately
Outside, the sample size that gas enters gas chromatograph can be controlled by gas sampling valve, can be more accurately detected analysis.
It is described airtight as a kind of improvement of shell with square aluminum lithium battery interior gas collection detection device of the present invention
Syringe is provided with stainless steel syringe needle, and the lower end of the stainless steel syringe needle is provided with seal gasket.
As a kind of improvement of shell with square aluminum lithium battery interior gas collection detection device of the present invention, the gas
Sampling valve is provided with quantitative loop.The setting energy fixed gas of quantitative loop sends out sample size.
As a kind of improvement of shell with square aluminum lithium battery interior gas collection detection device of the present invention, the airbag
The junction of first connecting tube is provided with the first valve.
As a kind of improvement of shell with square aluminum lithium battery interior gas collection detection device of the present invention, the airbag
The junction of second connecting tube is provided with the second valve.
As a kind of improvement of shell with square aluminum lithium battery interior gas collection detection device of the present invention, the vacuum
Pump is connect by third connecting tube with first connecting tube, and third valve is provided in the third connecting tube.
Further include branch as a kind of improvement of shell with square aluminum lithium battery interior gas collection detection device of the present invention
Frame, the holder are made of the first montant, the second montant and cross bar, and the cross bar is adjustably installed on first montant and institute
It states on the second montant.
As a kind of improvement of shell with square aluminum lithium battery interior gas collection detection device of the present invention, described first
Montant is fixedly connected with the side of the battery case, is fixedly connected at the top of second montant and the battery case, the gas
Close syringe is fixed on the cross bar.
It is another object of the present invention to provide a kind of shell with square aluminum lithium battery interior gas collection detection methods, including
Following steps：
Step 1 closes the second valve, opens the first valve and third valve, and the component being connected to the first connecting tube is taken out true
Sky, until pressure sensor shows that vacuum degree is -0.04 ~ -0.1Mpa；
Step 2 punctures the explosion-proof valve of shell with square aluminum lithium battery with the stainless steel syringe needle of gas-tight syringe and does not touch in explosion-proof valve
The baffle in face makes inside battery gas pass sequentially through gas-tight syringe and the first connecting tube, is collected into airbag；
Step 3 makes gasometry enter gas chromatograph, is detected by gas sampling valve.
As a kind of improvement of shell with square aluminum lithium battery interior gas collection detection method of the present invention, step 2 tool
Body includes following small step：
1）The position for adjusting shell with square aluminum lithium battery keeps the syringe needle of the opening alignment gas-tight syringe of its explosion-proof valve, height moderate；
2）After vacuumizing, closes the second valve and third valve, the first valve stay open, adjust cross bar downwards, make airtight needle
The stainless steel syringe needle of cylinder punctures rapidly battery anti-explosion valve and does not touch the baffle inside explosion-proof valve, and gas extracts and enters automatically
Into airbag, the first valve is closed, in gas collection to airbag；
3）The second valve is opened, gas enters gas sampling valve, fills up quantitative loop, with gas chromatograph connecting detection.
Compared with the prior art, the device of the invention and method are easy to operate, accurately can collect and detect square aluminium
The ingredient of shell lithium battery aerogenesis solves finished product or semi-finished product aluminum-shell battery（Liquid injection hole is sealed）Gas collection is difficult and dry by air
The problems such as disturbing.
Description of the drawings
Fig. 1 is the structural schematic diagram of shell with square aluminum lithium battery interior gas collection detection device in the present invention.
Wherein：1- battery cases, 2- gas-tight syringes, 3- airbags, 4- gas chromatographs, 5- pressure sensors, 6- vacuum pumps, 7-
Gas sampling valve, the first connecting tubes of 8-, the second connecting tubes of 9-, 10- third connecting tubes, the first valves of 11-, the second valves of 12-,
13- third valves, 14- holders, 15- shell with square aluminum lithium batteries, 16- explosion-proof valves, 17- baffles, 21- stainless steel syringe needles, 22- sealings
Rubber cushion, the first montants of 141-, the second montants of 142-, 143- cross bars.
Specific implementation mode
With reference to embodiment and Figure of description, the present invention is described in further detail, but the present invention
Embodiment be not limited to this.
Embodiment 1
As shown in Figure 1, the present embodiment provides a kind of shell with square aluminum lithium battery interior gas collection detection device, including battery case 1,
Gas-tight syringe 2, airbag 3, gas chromatograph 4, pressure sensor 5, vacuum pump 6 and gas sampling valve 7, gas-tight syringe 2 are suspended at
One end of the top of battery case 1, airbag 3 is connect by the first connecting tube 8 with gas-tight syringe 2, and the other end of airbag 3 passes through second
Connecting tube 9 is connect with gas chromatograph 4, and pressure sensor 5 and vacuum pump 6 are sequentially connected to the first connecting tube 8, gas sampling valve
7 are set to the second connecting tube 9.
Wherein, the material of battery case 1 is PTFE, it is internal anyhow can holding multiple pieces PTFE sheet carry out the sky of regulating cell case 1
Between height and width match the volume size of square aluminum-shell lithium battery 15.Airbag 3 be aluminum-plastic composite membrane, PTFE, FEP, PVF or
PVDF materials, size are 0.1 ~ 2.0L.
Further, gas-tight syringe 2 is provided with stainless steel syringe needle 21, and the lower end of stainless steel syringe needle 21 is provided with seal gasket
22.Syringe can be plastics, glass and stainless steel, and volume range is 1 ~ 20ml, and leakproofness is good.
Further, gas sampling valve 7 is provided with quantitative loop.The volume of gas sampling valve 7 is 100uL ~ 1mL.
Further, the junction of airbag 3 and the first connecting tube 8 is provided with the first valve 11.
Further, the junction of airbag 3 and the second connecting tube 9 is provided with the second valve 12.
Further, vacuum pump 6 is connect by third connecting tube 10 with the first connecting tube 8, is arranged in third connecting tube 10
There is third valve 13.
The invention also includes holder 14, holder 14 is made of the first montant 141, the second montant 142 and cross bar 143, cross bar
143 are adjustably installed on the first montant 141 and the second montant 142.First montant 141 is fixedly connected with the side of battery case 1,
Second montant 142 is fixedly connected with the top of battery case 1, and gas-tight syringe 2 is fixed on cross bar 143.
Embodiment 2
As shown in Figure 1, the present embodiment provides a kind of shell with square aluminum lithium battery interior gas collection detection method, including following step
Suddenly：
Step 1 closes the second valve 12, opens the first valve 11 and third valve 13, the portion being connected to the first connecting tube 8
Part vacuumizes, until pressure sensor 5 shows that vacuum degree is -0.04 ~ -0.1Mpa；
Step 2 punctures the explosion-proof valve 16 of shell with square aluminum lithium battery 15 with the stainless steel syringe needle 21 of gas-tight syringe 2 and does not touch
The baffle 17 of 16 the inside of explosion-proof valve, makes inside battery gas pass sequentially through gas-tight syringe 2 and the first connecting tube 8, is collected into airbag 3
In；
Step 3 makes gasometry enter gas chromatograph 4, is detected by gas sampling valve 7.
Further, step 2 specifically includes following small step：
1）The position for adjusting shell with square aluminum lithium battery 15 keeps the syringe needle of the opening alignment gas-tight syringe 2 of its explosion-proof valve 16, height suitable
In；
2）After vacuumizing, closes the second valve 12 and third valve 13, the first valve 11 stays open, adjust cross bar 143 downwards,
So that the stainless steel syringe needle 21 of gas-tight syringe 2 is punctured battery anti-explosion valve 16 rapidly and do not touch the baffle 17 of 16 the inside of explosion-proof valve,
Gas is extracted and is entered in airbag 3 automatically, the first valve 11 of closing, in gas collection to airbag 3；
3）The second valve 12 is opened, gas enters gas sampling valve 7, fills up quantitative loop, with 4 connecting detection of gas chromatograph.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also be to above-mentioned embodiment party
Formula is changed and is changed.Therefore, the invention is not limited in above-mentioned specific implementation mode, every those skilled in the art exist
Made any conspicuously improved, replacement or modification all belongs to the scope of protection of the present invention on the basis of the present invention.This
Outside, although having used some specific terms in this specification, these terms are merely for convenience of description, not to the present invention
Constitute any restrictions.
Claims (10)
1. a kind of shell with square aluminum lithium battery interior gas collection detection device, it is characterised in that：Including battery case, gas-tight syringe,
Airbag, gas chromatograph, pressure sensor, vacuum pump and gas sampling valve, the gas-tight syringe can be set to institute up or down
State the top of battery case, one end of the airbag is connect by the first connecting tube with the gas-tight syringe, the airbag it is another
End is connect by the second connecting tube with the gas chromatograph, described in the pressure sensor and the vacuum pump are sequentially connected to
First connecting tube, the gas sampling valve are set to second connecting tube.
2. shell with square aluminum lithium battery interior gas collection detection device according to claim 1, it is characterised in that：The gas
Close syringe is provided with stainless steel syringe needle, and the lower end of the stainless steel syringe needle is provided with seal gasket.
3. shell with square aluminum lithium battery interior gas collection detection device according to claim 1, it is characterised in that：The gas
Body sampling valve is provided with quantitative loop.
4. shell with square aluminum lithium battery interior gas collection detection device according to claim 1, it is characterised in that：The gas
Bag and the junction of first connecting tube are provided with the first valve.
5. shell with square aluminum lithium battery interior gas collection detection device according to claim 1, it is characterised in that：The gas
Bag and the junction of second connecting tube are provided with the second valve.
6. shell with square aluminum lithium battery interior gas collection detection device according to claim 1, it is characterised in that：It is described true
Sky pump is connect by third connecting tube with first connecting tube, and third valve is provided in the third connecting tube.
7. rectangular aluminum hull lithium battery interior gas collection detection device according to claim 1, it is characterised in that：Further include
Holder, the holder are made of the first montant, the second montant and cross bar, the cross bar be adjustably installed on first montant and
On second montant.
8. rectangular aluminum hull lithium battery interior gas collection detection device according to claim 7, it is characterised in that：Described
One montant is fixedly connected with the side of the battery case, is fixedly connected at the top of second montant and the battery case, described
Gas-tight syringe is fixed on the cross bar.
9. a kind of shell with square aluminum lithium battery interior gas collection detection method, which is characterized in that include the following steps：Step 1,
The second valve is closed, the first valve is opened and third valve, the component being connected to the first connecting tube vacuumizes, until pressure passes
Sensor shows that vacuum degree is -0.04 ~ -0.1Mpa；
Step 2 punctures the explosion-proof valve of shell with square aluminum lithium battery with the stainless steel syringe needle of gas-tight syringe and does not touch in explosion-proof valve
The baffle in face makes inside battery gas pass sequentially through gas-tight syringe and the first connecting tube, is collected into airbag；
Step 3 makes gasometry enter gas chromatograph, is detected by gas sampling valve.
10. shell with square aluminum lithium battery interior gas collection detection method according to claim 9, which is characterized in that step
Two specifically include following small step：
1）The position for adjusting shell with square aluminum lithium battery keeps the syringe needle of the opening alignment gas-tight syringe of its explosion-proof valve, height moderate；
2）After vacuumizing, closes the second valve and third valve, the first valve stay open, adjust cross bar downwards, make airtight needle
The stainless steel syringe needle of cylinder punctures rapidly battery anti-explosion valve and does not touch the baffle inside explosion-proof valve, and gas extracts and enters automatically
Into airbag, the first valve is closed, in gas collection to airbag；
3）The second valve is opened, gas enters gas sampling valve, fills up quantitative loop, with gas chromatograph connecting detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810283763.XA CN108548874A (en) | 2018-04-02 | 2018-04-02 | A kind of shell with square aluminum lithium battery interior gas collection detection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810283763.XA CN108548874A (en) | 2018-04-02 | 2018-04-02 | A kind of shell with square aluminum lithium battery interior gas collection detection device and method |
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| Publication Number | Publication Date |
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| CN108548874A true CN108548874A (en) | 2018-09-18 |
Family
ID=63513758
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810283763.XA Pending CN108548874A (en) | 2018-04-02 | 2018-04-02 | A kind of shell with square aluminum lithium battery interior gas collection detection device and method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110376531A (en) * | 2018-12-20 | 2019-10-25 | 盐城工学院 | A kind of lithium ion battery original position production gas detection device and method |
| CN110487348A (en) * | 2019-08-08 | 2019-11-22 | 浙江长虹飞狮电器工业有限公司 | The gas amount detecting device of alkaline battery |
| CN111413438A (en) * | 2020-04-27 | 2020-07-14 | 苏州清陶新能源科技有限公司 | Device and method for detecting battery formation gas |
| CN111487093A (en) * | 2019-01-25 | 2020-08-04 | 中国石油化工股份有限公司 | Novel thermal simulation gas product sampling device with gas storage function and sampling method |
| CN112285193A (en) * | 2020-10-19 | 2021-01-29 | 中国科学院长春应用化学研究所 | Battery mass spectrum sampling system |
| CN113960230A (en) * | 2021-11-26 | 2022-01-21 | 天目湖先进储能技术研究院有限公司 | In-situ chromatographic analysis system for battery gas production analysis |
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| CN111487093A (en) * | 2019-01-25 | 2020-08-04 | 中国石油化工股份有限公司 | Novel thermal simulation gas product sampling device with gas storage function and sampling method |
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| CN112285193A (en) * | 2020-10-19 | 2021-01-29 | 中国科学院长春应用化学研究所 | Battery mass spectrum sampling system |
| CN113960230A (en) * | 2021-11-26 | 2022-01-21 | 天目湖先进储能技术研究院有限公司 | In-situ chromatographic analysis system for battery gas production analysis |
| CN113960230B (en) * | 2021-11-26 | 2023-05-30 | 天目湖先进储能技术研究院有限公司 | In-situ chromatographic analysis system for gas production analysis of battery |
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Application publication date: 20180918 |