CN106525360A - Method for detecting sealing performance of battery box body - Google Patents
Method for detecting sealing performance of battery box body Download PDFInfo
- Publication number
- CN106525360A CN106525360A CN201611129222.9A CN201611129222A CN106525360A CN 106525360 A CN106525360 A CN 106525360A CN 201611129222 A CN201611129222 A CN 201611129222A CN 106525360 A CN106525360 A CN 106525360A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- pressure
- battery case
- casing
- box body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
Abstract
The invention relates to a method for detecting the sealing performance of a battery box body. The method comprises the step of connecting a to-be-detected box body, a standard box body and a gas source into a battery box body sealing performance detection device through a first pipeline and a second pipeline before the waterproof test on the battery box body; detecting the gas tightness of the to-be-detected battery box body by the battery box body sealing performance detection device; and conducting the waterproof test on the battery box body on the premise that the gas tightness of the to-be-detected battery box body is good enough. According to the technical scheme of the invention, the problem that the workload is heavy due to the direct conduction of the waterproof test on the battery box body can be avoided.
Description
Technical field
The present invention relates to cell safety technical field, and in particular to a kind of method of detection Battery case sealing.
Background technology
With the development of electric automobile, core component of the electrokinetic cell bag as pure electric automobile, the security of battery bag
Gradually highlight, directly influence the security of car load.Carrier of the Battery case as battery pack, to battery pack trouble free service
Key effect is played with protection.Battery case is designed, and needs to take into full account many factors.The battery weight of electric automobile
It is heavier, the bottom of car body is typically placed in, when surface gathered water is deeper, battery pack may be submerged, so setting to Battery case
Meter requires that the higher Battery case of meeting must seal waterproof, prevents from causing the hidden danger that insulate into water, therefore, the water resistance of battery pack shows
Obtain particularly critical, the Battery case degree of protection of general waterproof requires to reach IPX7.
IPX7 performance tests are that Battery case is put into the deep water of 1m, shelve 0.5h, can leak into more in usual battery case
Water, cause battery to soak, complex disposal process, workload of doing over again are big, and test period is long.So, existing method exists time-consuming
Long, cumbersome, workload of doing over again is big, it is impossible to carry out many deficiencies such as full inspection.
The content of the invention
It is an object of the invention to provide a kind of method of detection Battery case sealing, the method is avoided that direct to electricity
Pond casing carries out waterproof test, reduces workload.
For achieving the above object, present invention employs technical scheme below：
A kind of method of detection Battery case sealing, the method are comprised the following steps：
（1）Casing to be measured, standard box bodies and source of the gas are connected into by the inspection of Battery case sealing using the first pipeline and the second pipeline
Survey device；The stage casing of the second pipeline is provided with an air inlet, is respectively arranged at two ends with a gas outlet；The gas outlet of source of the gas and first
The air inlet of pipeline is connected, and the gas outlet of the first pipeline is connected with the air inlet of the second pipeline, the gas outlet difference of the second pipeline
It is connected with the air inlet of casing to be measured and standard box bodies；First pipeline is provided with first pressure table and intake valve；Second pipeline
Stage casing is provided with breather valve；Second pipeline is respectively arranged at two ends with second pressure table and the 3rd pressure gauge；
（2）Setting the blowing pressure value P1, threshold pressure difference P0, equilibration time t1 and equilibration time t2；
（3）Intake valve and breather valve are opened, is inflated into casing to be measured and standard box bodies by source of the gas, when the number of first pressure table
When value is equal to P1, intake valve is closed；
（4）Casing to be measured and standard box bodies carry out air pressure balance, after the intake valve t1 times are closed, close breather valve；
（5）After the breather valve t2 times are closed, the atmospheric pressure value P2 and the 3rd manometric atmospheric pressure value P3 of second pressure table are read；
（6）Compare the size of | P2-P3 | and P0, when | P2-P3 | is less than P0, treating measuring tank body carries out waterproof test；When | P2-
P3 | during more than or equal to P0, not treating measuring tank body carries out waterproof test.
Further, the span of the blowing pressure value P1 is 1 ~ 10KPa.P1 is the air pressure being filled with casing, because
The test of battery bag IP67 is that casing is put in the deep water of 1m, and pressure is that, under 10KPa, and actual conditions, pressure is more than 10KPa
It is that Battery case occurs deformation.Therefore, in the present invention, pressure is 10KPa to the maximum.But the present invention is primarily to see casing to be measured
With the difference of standard container, so, used here as 1 ~ 10KPa.
Further, the span of threshold pressure difference P0 is 100 ~ 500Pa.P0 is set as that 100 ~ 500Pa is main
It is to consider to be easy to judge, leakage value is too little to be difficult to check, error is big.If leakage rate is big, it is necessary to which the time of inspection is long, efficiency
It is low.
Further, the span of equilibration time t1 is 1 ~ 20 second.T1 be open casing to be measured and standard container it
Between valve, gas pressure between the two is reached unanimously, the equilibration time between gas is very short, therefore is set to 1 ~ 20 second.
Further, the span of equilibration time t2 is 30 ~ 100 seconds.When t2 is to detect casing gas leakage to be measured
Between, if time too short gas leakage is not obvious, time oversize impact efficiency, therefore, selecting 30 ~ 100 seconds, normal condition gas leakage is about
100 ~ 500Pa, is easy to observation.
It is from above technical scheme, of the invention before waterproof test is carried out to Battery case, first to battery to be measured
Casing carries out air-leakage test, in the case where Battery case air-tightness is good, then carries out waterproof test to Battery case, so
The problem that the workload brought because directly carrying out Battery case waterproof test can be avoided big.
Description of the drawings
Fig. 1 is the fundamental diagram of the present invention.
Wherein：
1st, casing to be measured, 2, standard box bodies, 3, second pressure table, the 4, the 3rd pressure gauge, the 5, second pipeline, 6, breather valve, 7,
One pipeline, 8, intake valve, 9, first pressure table, 10, source of the gas, 11, the air inlet of casing to be measured, 12, the air inlet of standard box bodies,
13rd, the air inlet of the second pipeline.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings：
A kind of method of detection Battery case sealing as shown in Figure 1, the method are comprised the following steps：
（1）Casing to be measured 1, standard box bodies 2 and source of the gas 10 are connected into by Battery case using the first pipeline 7 and the second pipeline 5 close
Envelope property detection means.The stage casing of the second pipeline 5 is provided with an air inlet 13, is respectively arranged at two ends with a gas outlet.Source of the gas 10
Gas outlet is connected with the air inlet of the first pipeline 7, and the gas outlet of the first pipeline 7 is connected with the air inlet 13 of the second pipeline, and second
The gas outlet of pipeline 5 is connected with the air inlet 12 of the air inlet and standard box bodies of casing to be measured 1 respectively.First pipeline 7 is provided with
First pressure table 9 and intake valve 8.The stage casing of the second pipeline 5 is provided with breather valve 6.Second pipeline 5 is respectively arranged at two ends with the second pressure
Power table 3 and the 3rd pressure gauge 4.Standard box bodies refer to air-tightness and waterproof test Battery case of good performance.
（2）Setting the blowing pressure value P1, threshold pressure difference P0, equilibration time t1 and equilibration time t2.Preferably, set P1
=4KPa, Pa=300Pa, t1=10 second, t2=90 seconds or setting P1=6KPa, Pa=130Pa, t1=15 second, t2=30 seconds.
（3）Intake valve 8 and breather valve 6 are opened, is inflated into casing to be measured 1 and standard box bodies 2 by source of the gas 10, when first
When the numerical value of pressure gauge 9 is equal to P1, intake valve 8 is closed.
（4）Casing to be measured 1 and standard box bodies 2 carry out air pressure balance, after the intake valve t1 times are closed, close breather valve 6.
（5）After the breather valve t2 times are closed, the air pressure of the atmospheric pressure value P2 and the 3rd pressure gauge 4 of second pressure table 3 is read
Value P3.
（6）Compare the size of the difference of P2 and P3 and the size of P0, i.e. | P2-P3 | and P0, when | P2-P3 | is less than P0,
Illustrate that casing air-tightness to be measured is good, then treat measuring tank body to carry out waterproof test；When | P2-P3 | is more than or equal to P0, explanation is treated
Measuring tank body air-tightness is bad, and not treating measuring tank body carries out waterproof test.
In sum, the present invention first treats the air-tightness of measuring tank body and is detected, by treating measuring tank body and standard box bodies
Air pressure contrasted, the air-tightness for treating measuring tank body is judged, when the air-tightness of casing to be measured is good, then is treated
Measuring tank body carries out waterproof test.It is when can so avoid the to be measured casing bad to air-tightness from directly carrying out waterproof test, to be measured
The big problem of the casing workload of doing over again that leak is caused repeatedly.
Embodiment described above is only that the preferred embodiment of the present invention is described, not the model to the present invention
Enclose and be defined, on the premise of without departing from design spirit of the present invention, technical side of the those of ordinary skill in the art to the present invention
Various modifications and improvement that case is made, all should fall in the protection domain of claims of the present invention determination.
Claims (5)
1. it is a kind of detection Battery case sealing method, it is characterised in that：The method is comprised the following steps：
（1）Casing to be measured, standard box bodies and source of the gas are connected into by the inspection of Battery case sealing using the first pipeline and the second pipeline
Survey device；The stage casing of the second pipeline is provided with an air inlet, is respectively arranged at two ends with a gas outlet；The gas outlet of source of the gas and first
The air inlet of pipeline is connected, and the gas outlet of the first pipeline is connected with the air inlet of the second pipeline, the gas outlet difference of the second pipeline
It is connected with the air inlet of casing to be measured and standard box bodies；First pipeline is provided with first pressure table and intake valve；Second pipeline
Stage casing is provided with breather valve；Second pipeline is respectively arranged at two ends with second pressure table and the 3rd pressure gauge；
（2）Setting the blowing pressure value P1, threshold pressure difference P0, equilibration time t1 and equilibration time t2；
（3）Intake valve and breather valve are opened, is inflated into casing to be measured and standard box bodies by source of the gas, when the number of first pressure table
When value is equal to P1, intake valve is closed；
（4）Casing to be measured and standard box bodies carry out air pressure balance, after the intake valve t1 times are closed, close breather valve；
（5）After the breather valve t2 times are closed, the atmospheric pressure value P2 and the 3rd manometric atmospheric pressure value P3 of second pressure table are read；
（6）Compare the size of | P2-P3 | and P0, when | P2-P3 | is less than P0, treating measuring tank body carries out waterproof test；When | P2-
P3 | during more than or equal to P0, not treating measuring tank body carries out waterproof test.
2. it is according to claim 1 it is a kind of detection Battery case sealing method, it is characterised in that：The blowing pressure
The span of value P1 is 1 ~ 10KPa.
3. it is according to claim 1 it is a kind of detection Battery case sealing method, it is characterised in that：The pressure difference limen
The span of value P0 is 100 ~ 500Pa.
4. it is according to claim 1 it is a kind of detection Battery case sealing method, it is characterised in that：The equilibration time
The span of t1 is 1 ~ 20 second.
5. it is according to claim 1 it is a kind of detection Battery case sealing method, it is characterised in that：The equilibration time
The span of t2 is 30 ~ 100 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129222.9A CN106525360A (en) | 2016-12-09 | 2016-12-09 | Method for detecting sealing performance of battery box body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611129222.9A CN106525360A (en) | 2016-12-09 | 2016-12-09 | Method for detecting sealing performance of battery box body |
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| Publication Number | Publication Date |
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| CN106525360A true CN106525360A (en) | 2017-03-22 |
Family
ID=58342550
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|---|---|---|---|
| CN201611129222.9A Pending CN106525360A (en) | 2016-12-09 | 2016-12-09 | Method for detecting sealing performance of battery box body |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989877A (en) * | 2017-04-24 | 2017-07-28 | 北京长城华冠汽车科技股份有限公司 | Battery case sealing propertytest test method |
| CN108181061A (en) * | 2018-01-16 | 2018-06-19 | 重庆安木科技有限公司 | A kind of new energy car battery packet tests system |
| CN108645577A (en) * | 2018-07-18 | 2018-10-12 | 歌尔股份有限公司 | A kind of air tightness testing method of box body |
| CN108731888A (en) * | 2018-03-14 | 2018-11-02 | 中航锂电（洛阳）有限公司 | A kind of battery pack IP67 protection reliability test system |
| CN108807735A (en) * | 2017-05-04 | 2018-11-13 | 郑州宇通客车股份有限公司 | A kind of Battery case, Battery case water resistance detection method and system |
| CN108956061A (en) * | 2018-10-12 | 2018-12-07 | 广州衍瀚软件有限公司 | A kind of battery case air-tightness intelligent checking system and its detection method |
| CN114720067A (en) * | 2022-04-28 | 2022-07-08 | 江苏恒义工业技术有限公司 | Air tightness detection device of battery box |
| CN115326305A (en) * | 2022-10-11 | 2022-11-11 | 苏州清研精准汽车科技有限公司 | Battery package gas tightness detection device |
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| JP2001228047A (en) * | 2000-02-17 | 2001-08-24 | Fukuda:Kk | Volume-adjusting method in air leak testing device and air leak testing device having volume adjusting function |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106989877A (en) * | 2017-04-24 | 2017-07-28 | 北京长城华冠汽车科技股份有限公司 | Battery case sealing propertytest test method |
| CN108807735A (en) * | 2017-05-04 | 2018-11-13 | 郑州宇通客车股份有限公司 | A kind of Battery case, Battery case water resistance detection method and system |
| CN108181061A (en) * | 2018-01-16 | 2018-06-19 | 重庆安木科技有限公司 | A kind of new energy car battery packet tests system |
| CN108731888A (en) * | 2018-03-14 | 2018-11-02 | 中航锂电（洛阳）有限公司 | A kind of battery pack IP67 protection reliability test system |
| CN108645577A (en) * | 2018-07-18 | 2018-10-12 | 歌尔股份有限公司 | A kind of air tightness testing method of box body |
| CN108956061A (en) * | 2018-10-12 | 2018-12-07 | 广州衍瀚软件有限公司 | A kind of battery case air-tightness intelligent checking system and its detection method |
| CN114720067A (en) * | 2022-04-28 | 2022-07-08 | 江苏恒义工业技术有限公司 | Air tightness detection device of battery box |
| CN114720067B (en) * | 2022-04-28 | 2023-02-21 | 江苏恒义工业技术有限公司 | Air tightness detection device of battery box |
| CN115326305A (en) * | 2022-10-11 | 2022-11-11 | 苏州清研精准汽车科技有限公司 | Battery package gas tightness detection device |
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Application publication date: 20170322 |