CN101377444B - Method for evaluating safety performance of battery seal component - Google Patents
Method for evaluating safety performance of battery seal component Download PDFInfo
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- CN101377444B CN101377444B CN2007101476458A CN200710147645A CN101377444B CN 101377444 B CN101377444 B CN 101377444B CN 2007101476458 A CN2007101476458 A CN 2007101476458A CN 200710147645 A CN200710147645 A CN 200710147645A CN 101377444 B CN101377444 B CN 101377444B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a method for evaluating the security of the battery seal elements. The method comprises the following contents: the battery seal elements are placed between an upper plane and a lower plane which are mutually paralleled, and a pressure which is perpendicular to the upper and the lower planes is pressed on the two planes. That whether the security of the battery seal elements can satisfy the requirements or not can be judged according to the deformation degree and the endured pressure of the battery seal elements. The security of the battery seal elements can be accurately evaluated by using the method, which provides a better method for selecting the proper and safe battery seal elements. The method is much simpler which greatly reduces the testing and evaluation cost.
Description
Technical field
The present invention relates to a kind of method of evaluating safety performance of battery seal component.
Background technology
When producing battery,, then need to adopt seal to realize sealing owing to need the interior electrolytic solution of sealed cell.Yet, discharge and recharge the subsidiary reaction meeting of following in the chemical reaction that is carried out in the battery for a long time and produce the gas of accumulating, when the gas of accumulating exceeds the certain pressure intensity scope, need to discharge gas, the assurance battery is not blasted, thereby the sealing property of battery seal again can not be too strong.Therefore, the selection of battery seal is most important, should guarantee that the electrolytic solution in the sealed cell is unlikely to leakage, guarantees again can in time discharge gas when the gas of accumulating in the battery increases, and battery is not blasted.Therefore, need test, thereby select the battery seal that meets the demands the security performance of battery seal.
Currently used test evaluation method is, the seal point is welded between the last lower bottom cover of battery cap, makes the block that battery uses, and will block a shot to press from both sides with anchor clamps and control on the air pressure test board, tests.During test, to enter from the circular hole in the middle of the battery cap lower bottom cover through manometric nitrogen, strengthen nitrogen gas pressure gradually, the sealing of breaking through seal until nitrogen is overflowed from the vent port of last bottom, test nitrogen gas pressure this moment, divided by the area of seal, promptly obtain the pressure that the sealing part bears.
According to the structure of battery, the theoretical analysis and calculation by mechanics goes out, and when in the scope of pressure at 1.8-2.4MPa that the seal in the battery cap bears, battery is safe.When the pressure that seal bears is lower than minimum 1.8MPa, can have the phenomenon of leakage during battery storing, influence the performance of battery, when the pressure that seal bears was higher than mxm. 2.4MPa, battery the groove position can occur and stretch, battery distortion even blast.
Therefore, in theory, when the pressure that adopts above-mentioned prior art to measure was in the 1.8-2.4MPa pressure range, it was safe using the battery of sealing part.But in the test and application of reality, still there is the phenomenon of the stretching of groove position, leakage, still has potential safety hazard.
Simultaneously, when adopting the method for above-mentioned prior art to test, need utilize spot welding that seal is fixed between the last lower bottom cover of battery cap, can push seal usually, and the folder of will blocking a shot is controlled on the air pressure test board further squeeze sealing member.Therefore the data that test out can have error with the data of reality, make test inaccurate, thereby can not accurately estimate the security performance of battery seal.And if the underproof words of result of test, the block of battery just can only be scrapped, and causes waste.And this method of testing is comparatively complicated.
Summary of the invention
The objective of the invention is to overcome the comparatively complicated defective of the security performance that accurately to estimate battery seal in the above-mentioned prior art and method, provide a kind of and can accurately estimate and the method for simple evaluating safety performance of battery seal component.
The invention provides a kind of method of evaluating safety performance of battery seal component, wherein, described method comprises, described battery seal is placed on two interplanars up and down that are parallel to each other, at the pressure that applies on the last lower plane perpendicular to lower plane on described, judge according to the deformation quantity of described battery seal and the pressure that is born whether the security performance of described battery seal meets the demands.
The method of evaluating safety performance of battery seal component provided by the invention is with respect to prior art, the operation of having removed spot welding from and having controlled with the anchor clamps folder, reduced the factor that makes test result produce error, thereby can accurately estimate the security performance of battery seal, provide better method for selecting battery seal suitable and safety.Therefore and simplified the method for test evaluation, make the method for evaluating safety performance of battery seal component more simple.And method provided by the invention has been removed the gas storage and the conveying device of spot welding device, grip device and nitrogen from respect to prior art, has significantly reduced the cost of test evaluation.
Description of drawings
Fig. 1 is the pressure-deformation quantity curve of test gained in the embodiment of the invention 1;
Fig. 2 is the decomposing schematic representation of battery cap structure.
Embodiment
The method of evaluating safety performance of battery seal component provided by the invention comprises, described battery seal is placed on two interplanars up and down that are parallel to each other, at the pressure that applies on the last lower plane perpendicular to lower plane on described, judge according to the deformation quantity of described battery seal and the pressure that is born whether the security performance of described battery seal meets the demands.
According to evaluation method provided by the invention, institute's applied pressure can act on the plane, also can act on the lower plane, can also act on the lower plane simultaneously.
According to evaluation method provided by the invention, the pressure that described battery seal bore is the pressure that is born on the battery seal of unit area.
According to evaluation method provided by the invention, in the preferred case, this method comprises, measure the pressure that is born under the described battery seal different deformation amount, set up the curve of the described battery seal deformation quantity and the pressure that bears, and judge whether the pressure range that battery seal bore of the deformation quantity scope correspondence of any one or more battery seals on this curve meets the demands.
Preferred implementation according to evaluation method provided by the invention, the curve method of the pressure of setting up described battery seal deformation quantity and being born is, applying perpendicular to the pressure of lower plane on described to the deformation quantity of described battery seal on the last lower plane is 60%, reduce to be applied to the pressure to 0 of going up lower plane perpendicular to described then, be applied to the pressure on the described battery seal under the record different deformation amount, draw the curve of described battery seal deformation quantity and the pressure that is born.
Above-mentioned preferred embodiment in, to reduce to be applied to perpendicular to the described method that goes up the pressure of lower plane be the deformation quantity that makes described battery seal reduces with the speed of 0.1-0.5mm/min.
Preferred implementation according to evaluation method provided by the invention, judge that the condition whether pressure range that battery seal bore of the deformation quantity scope correspondence of any one or more battery seals on this curve meets the demands is, when the deformation quantity of described battery seal was 25-30%, the pressure that seal bore was in the 1.8-2.4MPa scope.
Adopt the mode of specific embodiment that the present invention is described in further detail below.
Choosing 3 seal products tests.
Sealing member material: ethylene-propylene-diene rubber (EPDM rubber), Jilin chemical industry, EPDM4045, hardness 68-78A, compression set≤35%;
Testing apparatus: GP-TS2000S tension tester, the high product checkout equipment in Shenzhen company limited
Concrete method of testing is:
1, the height of measurement products and length and width size, and calculate foursquare area;
2, tested seal sample is placed on two be parallel to each other up and down between horizontal plane, be put on the tension tester;
3, tension tester is so that sample deformation is the decline rate of the 0.1mm/min horizontal plane application of force that makes progress, deformation quantity up to sample is 60% of a height of specimen, tension tester stops to descend, this moment, tension tester began to rise, ascending velocity is that to make the deformation quantity of sample be the ascending velocity of 0.1mm/min, is 0 until deformation quantity.
4, in this process, form the pressure-inflection curves of closure as shown in Figure 1.
5, read the pressure values that deformation quantity is 25-30% from curve, and note down.
6, according to the method described above, measure the pressure-inflection curves of other 2 seal samples, and the record deformation quantity is the pressure values of 25-30%.
The results are shown in Table 1 for gained.
Table 1
| Deformation quantity 25% | Deformation quantity 26% | Deformation quantity 27% | Deformation quantity 28% | Deformation quantity 29% | Deformation quantity 30% | |
| 1 | 1.80MPa | 1.85MPa | 1.95MPa | 2.05MPa | 2.25MPa | 2.30 |
| 2 | 1.85MPa | 1.90MPa | 1.95MPa | 2.10MPa | 2.30MPa | 2.40 |
| 3 | 1.85MPa | 1.90MPa | 1.95MPa | 2.05MPa | 2.30MPa | 2.40MPa |
According to evaluation method of the present invention, above-mentioned three samples are when deformation quantity is 25-30%, and the pressure that is born is 1.8-2.4MPa, and therefore the security performance of above-mentioned three samples all can meet the demands.
Adopt 4 kinds of sealing member materials to test according to the method described above.
4 kinds of sealing member materials are respectively, 1. 1.60-1.80 to compress 28% pressure magnitude classification; 2. 1.80-2.10; 3. 2.10-2.40; 4. 2.40-2.60
Above-mentioned 4 kinds of sealing member materials are tested 5 groups of data respectively, and test result sees Table 2.
Comparative Examples 1
Still adopt above-mentioned 4 kinds of sealing member materials to test by the method for prior art respectively, concrete method of testing is as follows:
1, makes battery cap
Length and width is 6.15 ± 0.05mm, thickness is that the seal sample of 1.95 ± 0.05mm is pressed making battery cap shown in Figure 2, seal sample 3 is positioned between bottom 1 and the lower bottom cover 2, the seal sample is hidden fully the circular hole 5 that is provided with in the middle of the lower bottom cover 2, and place four vent ports 4 being provided with on the bottom 1 with interior not stop the exhaust of four vent ports, will go up lower bottom cover and utilize spot welding to fix.
2, the pressure that born of test seal sample
The above-mentioned block of making is clamped on the mould that is provided with on the table top of air pressure test board, open gas admittance valve, make nitrogen in the nitrogen cylinder through behind the rain glass, the circular holes 5 that are provided with in the middle of the lower bottom cover 2 enter, strengthen nitrogen gas pressure gradually, make the nitrogen roof pressure seal sample that makes progress; Add clear water on mould top, when constantly having bubble to overflow in the clear water, close gas admittance valve, record barometric atmospheric pressure value this moment, this atmospheric pressure value is the pressure that the seal sample is born, and divided by the area of seal sample, promptly obtains the pressure that the seal sample is born.And, calculating by theoretical, the pressure that requires the seal sample to be born should be the requirement that 1.8-2.4MPa can meet battery safety.
3, adopt said method revision test 4 times again, and obtain the pressure that the seal sample is born respectively.
4, adopt said method to test other 3 kinds of seal samples, and test 5 times.
Above-mentioned test result is listed in the table 2.
The verification test accuracy
With pack into the battery of SC series specification of seal sample, the security performance of test battery respectively, the condition of test safety performance is as follows:
1, battery leakage test condition: is that 25 ℃, humidity are under 60% the condition with exposed battery in temperature, stacks 3 layers, 10 * 10 every layer, deposits 3 months.Observe whether leakage of battery.
2, battery deformation test condition: after exposed battery is full of electricity, be placed in the pure tin melt of fusion, make its short circuit dischange.
According to above-mentioned test condition, every kind of material in embodiment 2 and the Comparative Examples 1 is respectively charged in the battery of 30 SC series, carry out the test of battery safety.The results are shown in Table 2 for gained.
Table 2
As can be seen from Table 2, embodiment 2 is compared with Comparative Examples 1, the test data error in the Comparative Examples 1 is bigger, and the span data that same material is tested is bigger, and the test of security performance is very inaccurate.For example, for material 1., the test data of embodiment 2 is in the underproof scope of security, and the test of actual battery security also is underproof, and in the Comparative Examples 1, still having data is 1.85MPa, is to belong in the security performance acceptable ranges.For material 3., the test data of embodiment 2 is in the security acceptable ranges, and actual cell safety property testing also is qualified, and in the Comparative Examples 1, it is 2.60MPa that data are arranged, and is to belong in the underproof scope of security performance.For material 4., the test data of embodiment 2 is in the underproof scope of security, and the test of actual battery security also is underproof, and in the Comparative Examples 1, still has three data 2.25MPa, 2.30MPa and 2.40MPa to belong in the security performance acceptable ranges.
Therefore, can draw, adopt the method for evaluating safety performance of battery seal component provided by the invention very accurate, for the seal that it is qualified that battery is selected security performance for use provides method accurately by above-mentioned test result.And method of the present invention is simple, can measure the security performance of seal rapidly and accurately.
Claims (5)
1. the method for an evaluating safety performance of battery seal component, it is characterized in that, described method comprises, described battery seal is placed on two interplanars up and down that are parallel to each other, at the pressure that applies on the last lower plane perpendicular to lower plane on described, judge according to the deformation quantity of described battery seal and the pressure that is born whether the security performance of described battery seal meets the demands.
2. method according to claim 1, wherein, this method comprises, measure the pressure that is born under the described battery seal different deformation amount, set up the curve of the described battery seal deformation quantity and the pressure that bears, and judge whether the pressure range that battery seal bore of the deformation quantity scope correspondence of any one or more battery seals on this curve meets the demands.
3. method according to claim 2, wherein, the curve method of the pressure of setting up described battery seal deformation quantity and being born is, applying perpendicular to the pressure of lower plane on described to the deformation quantity of described battery seal on the last lower plane is 60%, reduce to be applied to the pressure to 0 of going up lower plane perpendicular to described then, be applied to the pressure on the described battery seal under the record different deformation amount, draw the curve of described battery seal deformation quantity and the pressure that is born.
4. method according to claim 3, wherein, to reduce to be applied to perpendicular to the described method that goes up the pressure of lower plane be the deformation quantity that makes described battery seal reduces with the speed of 0.1-0.5mm/min.
5. method according to claim 2, wherein, the pressure range that battery seal bore of judging the deformation quantity scope correspondence of any one or more battery seals on this curve finger that whether meets the demands, when the deformation quantity of judging described battery seal was 25-30%, whether the pressure that seal bore was 1.8-2.4MPa.
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| CN2007101476458A CN101377444B (en) | 2007-08-31 | 2007-08-31 | Method for evaluating safety performance of battery seal component |
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| CN2007101476458A CN101377444B (en) | 2007-08-31 | 2007-08-31 | Method for evaluating safety performance of battery seal component |
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| CN101377444B true CN101377444B (en) | 2011-07-27 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106769510A (en) * | 2016-12-16 | 2017-05-31 | 肇庆市众自动化设备有限公司 | A kind of block pressure test device |
| CN109738805B (en) * | 2018-12-29 | 2021-02-23 | 蜂巢能源科技有限公司 | Battery, testing method and device thereof, and electronic equipment |
| CN113008490B (en) * | 2021-02-02 | 2022-03-15 | 清华大学 | Leakage self-detection rubber sealing element, preparation method and leakage detection method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0482422B1 (en) * | 1990-10-26 | 1995-02-15 | VB Autobatterie GmbH | Method of testing the fluid tightness of cells of starter-batteries using compressed air |
| CN1250159A (en) * | 1998-10-01 | 2000-04-12 | 国家高技术新型储能材料工程开发中心 | Fast battery hermetization testing method |
| US6479294B1 (en) * | 2000-11-02 | 2002-11-12 | Quallion Llc | Method for determining container leakage |
| WO2007004719A1 (en) * | 2005-07-01 | 2007-01-11 | Toyota Jidosha Kabushiki Kaisha | Fuel battery system, method for detecting gas leakage in such system, and mobile object |
| CN2901275Y (en) * | 2006-02-14 | 2007-05-16 | 深圳市比克电池有限公司 | Detector for lithium cell seal property |
| CN101021459A (en) * | 2007-03-15 | 2007-08-22 | 天津力神电池股份有限公司 | Battery circumferential welding withstand voltage testing device and testing method thereof |
-
2007
- 2007-08-31 CN CN2007101476458A patent/CN101377444B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0482422B1 (en) * | 1990-10-26 | 1995-02-15 | VB Autobatterie GmbH | Method of testing the fluid tightness of cells of starter-batteries using compressed air |
| CN1250159A (en) * | 1998-10-01 | 2000-04-12 | 国家高技术新型储能材料工程开发中心 | Fast battery hermetization testing method |
| US6479294B1 (en) * | 2000-11-02 | 2002-11-12 | Quallion Llc | Method for determining container leakage |
| WO2007004719A1 (en) * | 2005-07-01 | 2007-01-11 | Toyota Jidosha Kabushiki Kaisha | Fuel battery system, method for detecting gas leakage in such system, and mobile object |
| CN2901275Y (en) * | 2006-02-14 | 2007-05-16 | 深圳市比克电池有限公司 | Detector for lithium cell seal property |
| CN101021459A (en) * | 2007-03-15 | 2007-08-22 | 天津力神电池股份有限公司 | Battery circumferential welding withstand voltage testing device and testing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 金成昌.无汞碱锰电池密封圈的检测方法.《电池工业》.2001,第6卷(第6期),第255-257页. * |
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