CN102507105A - Detection device for seal strength of bipolar plate water cavity of fuel cell and detection method thereof - Google Patents
Detection device for seal strength of bipolar plate water cavity of fuel cell and detection method thereof Download PDFInfo
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- CN102507105A CN102507105A CN2011103535071A CN201110353507A CN102507105A CN 102507105 A CN102507105 A CN 102507105A CN 2011103535071 A CN2011103535071 A CN 2011103535071A CN 201110353507 A CN201110353507 A CN 201110353507A CN 102507105 A CN102507105 A CN 102507105A
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Abstract
The invention relates to a detection device for the seal strength of a bipolar plate water cavity of a fuel cell and a detection method thereof. The device comprises an air source, a gas circulation pipeline, a pressure reducing valve, a pressure gauge, testing end plates and a press; upper and lower testing end plates are provided with testing end plate positioning holes corresponding to positioning holes of a bipolar plate to be detected, and positioning pins penetrate through the positioning holes; the upper testing end plate is provided with testing end plate air inlet and outlet communicated with an inlet and an outlet of the bipolar plate water cavity to be detected, the air outlet is connected with a stop valve, the air inlet is connected with the pressure reducing valve and the air source through a pipeline, and the pressure gauge is connected between the air inlet and the pressure reducing valve; and the testing end plates clamp the bipolar plate to be detected between an upper die and a lower die of the press. The detection method comprises the following step of: constantly increasing the pressure of testing air introduced into a component to be detected until the index of the pressure gauge in the pipeline is reduced, so that the pressure at the moment is judged to be the seal strength of the bipolar plate water cavity. The method is easy to implement and can really reflect the seal strength of the bipolar plate water cavity, so test results are real, effective and accurate.
Description
Technical field
The present invention relates to the fuel cell technology field, relate in particular to the pick-up unit and the detection method of fuel battery double plates water cavity sealing intensity.
Background technology
Bipolar plates is one of core component of Proton Exchange Membrane Fuel Cells, and it is to be formed by connecting through adhesive glue bonding or laser bonding minus plate and positive plate.Tack line or sealing wire are distributed in the bipolar plates outer ring, play sealing bipolar plates water cavity.
Generally be according to national standard at present for bonding or the method for testing that is welded to connect intensity, the maximum, force when utilizing universal testing machine to measure sample to destroy, concrete is the patent of invention of CN 101509867A like publication number.But in the Proton Exchange Membrane Fuel Cells field, this method can only reflect pulling strengrth, can not truly reflect the sealing intensity of bipolar plates water cavity.Publication number is the patent of invention of CN 102087161A, discloses a kind of fuel battery double plates water cavity air-tightness detection device and detection method.This method only is to detect the impermeability situation of bipolar plates water cavity under specified air pressure, investigation be the qualification rate of bipolar plates, sample is not played destruction, can not reflect the sealing intensity of bipolar plates water cavity.
Summary of the invention
The objective of the invention is for a kind of pick-up unit and detection method that can detect the sealing intensity of fuel battery double plates water cavity truly, effectively, accurately is provided.
Adopt following technical scheme:
A kind of pick-up unit of fuel battery double plates water cavity sealing intensity comprises source of the gas, gas communication pipeline, reduction valve, tensimeter, test end plate and press composition; Said test end plate is that two ends are thick, " recessed " shape structure of intermediate thin, comprises test bottom plate and test upper head plate, and the test bottom plate is " recessed " shape structure just, and corresponding test upper head plate is " recessed " shape structure;
The position at four angles of test bottom plate be provided with tested bipolar plates on the corresponding test bottom plate pilot hole of pilot hole; One end of test upper head plate is provided with the test upper head plate air admission hole that is communicated with the import of tested bipolar plates water cavity; The other end of test upper head plate is provided with the test end plate venthole that is communicated with tested bipolar plates water cavity outlet; Test end plate venthole end connects stop valve, the position at four angles of test upper head plate be provided with tested bipolar plates on the corresponding test upper head plate pilot hole of pilot hole; Test upper head plate pilot hole, test bottom plate pilot hole and tested bipolar plates pilot hole all are through holes, and register pin connects pilot hole; Test upper head plate air admission hole is connected with reduction valve through pipeline, and reduction valve passes through pipeline and is connected with source of the gas, and tensimeter is connected to be tested on upper head plate air admission hole and the pipeline that reduction valve is connected; The test lead plate holder is held tested bipolar plates, places between the upper die and lower die of press.
The aperture of test upper head plate pilot hole according to the invention, test bottom plate pilot hole is identical with the aperture of tested bipolar plates pilot hole.
The air admission hole of test upper head plate according to the invention and the diameter of venthole are 5～10mm.
Tensimeter according to the invention is a precision pressure gauge, and the tensimeter precision is 0.002MPa.
Press according to the invention is made up of rotary handle and upper and lower mould; Upper and lower mould is not of uniform size, and counterdie is a fixed big plane, and patrix is the symmetrical facet of right ends, through rotary handle patrix is moved down to the test end plate two ends application of force.
Said source of the gas is a gas cylinder, and test gas is air or nitrogen.
The method of the invention may further comprise the steps:
A, cathode and anode unipolar plate bonding standard or laser bonding flow process according to the rules connects, and room temperature is positioned over smooth, bright and clean place is stablized its performance.
B, the sticking water cavity sealing of the bipolar plates tree lace that will connect after stablizing are placed on the test bottom plate, and through pilot hole and register pin location, placement test upper head plate on it is also through pilot hole and register pin location;
C, the assembly to be tested that step b is assembled place between the upper die and lower die of press, and the rotary press rotary handle is regulated the applied pressure size, realizes the positiver sealing to assembly to be tested;
D, close the stop valve of test upper head plate gas outlet end; Open source of the gas and regulate reduction valve to pressure stability and pressurize 2～5min; Observe the tensimeter in the pipeline simultaneously, if tensimeter no change between this hold period explains that then bipolar plates water cavity sealing intensity is greater than this test pressure;
E, regulate reduction valve, improve test pressure, treat pressure stability continued pressurize 2～5min, continue simultaneously to observe the tensimeter in the pipeline, if tensimeter between this hold period still no change explain that then bipolar plates water cavity sealing intensity is still greater than this test pressure;
F, repeating step e bring up to certain numerical value or at this numerical value between hold period, the tensimeter index descends suddenly until test pressure, and then the pressure of this moment is judged to be the sealing intensity of bipolar plates water cavity.
Because the test end plate is " recessed " shape design of the thick intermediate thin in two ends; So tested bipolar plates two ends are stressed, the centre does not stress; Bipolar plates similarly is to blow up a balloon during pressurization; Connecting line in the middle of the pressure hour cathode-anode plate can bear thereby impermeability good, connecting line will explosion when being loaded into the limit, can reflect the sealing intensity of bipolar plates water cavity really.The pressure that is applied in the MUT module under test is piecemeal increase, and each increase is more little good more, and must be increased to till the tested bipolar plates water cavity gas leakage.
Description of drawings
Fig. 1 formation synoptic diagram of the present invention;
Fig. 2 tests end plate upper head plate vertical view;
Fig. 3 tests end plate bottom plate vertical view;
The tested bipolar plates positive plate synoptic diagram of Fig. 4 embodiment;
The tested bipolar plates minus plate synoptic diagram of Fig. 5 embodiment;
The tested bipolar plates positive plate water cavity sealing tree lace synoptic diagram of Fig. 6 embodiment;
The tested bipolar plates minus plate water cavity sealing tree lace synoptic diagram of Fig. 7 embodiment.
In the accompanying drawing: 1, gas cylinder; 2, gas communication pipeline; 3, reduction valve; 4, precision pressure gauge; 5, press rotary handle; 6, press patrix; 7, press counterdie; 8, test upper head plate; 9, test bottom plate; 10, tested bipolar plates; 11, stop valve; 12, upper head plate air admission hole; 13, upper head plate venthole; 14, upper head plate pilot hole (4 corner each 1); 15, bottom plate pilot hole (4 corner each 1); 16, positive plate water cavity import; 17, positive plate water cavity outlet; 18, positive plate water cavity bonding or sealing wire; 19, minus plate water cavity import; 20, minus plate water cavity outlet; 21, minus plate water cavity bonding or sealing wire; 22, positive plate pilot hole; 23, minus plate pilot hole; 24, positive plate flow field area; 25, minus plate flow field area.
Embodiment
Following embodiment can make those of ordinary skill in the art more fully understand the present invention, but does not limit the present invention in any way.
The pick-up unit of fuel battery double plates water cavity sealing intensity comprises gas cylinder, gas communication pipeline, reduction valve 3, tensimeter 4, test end plate 8,9 and press composition, and test gas is a nitrogen. Test end plate 8,9 be that two ends are thick, " recessed " shape structure of intermediate thin, comprises test bottom plate and test upper head plate, and the test bottom plate is " recessed " shape structure just, and corresponding test upper head plate is " recessed " shape structure; The position at four angles of test bottom plate 9 be provided with tested bipolar plates 10 on the corresponding test bottom plate pilot hole 15 of pilot hole 22,23; One end of test upper head plate 8 is provided with the test upper head plate air admission hole 12 that is communicated with tested bipolar plates 10 water cavity imports 16,19; The other end of test upper head plate 8 is provided with the test end plate venthole 13 that is communicated with tested bipolar plates 10 water cavities outlet 17,20; Test end plate venthole 13 ends connect stop valve 11, and the diameter in test end plate inlet, outlet hole is 5mm; The position at four angles of test upper head plate 8 be provided with tested bipolar plates 10 on the corresponding test upper head plate pilot hole 14 of pilot hole 22,23; Test upper head plate pilot hole 14, test bottom plate pilot hole 15 and tested bipolar plates pilot hole 22,23 all are through holes, and register pin connects pilot hole; Test upper head plate air admission hole 12 is connected with reduction valve 3 through pipeline, and reduction valve 3 passes through pipeline and is connected with source of the gas, and tensimeter 4 is connected to be tested on upper head plate air admission hole 12 and the pipeline that reduction valve 3 is connected; The test lead plate holder is held tested bipolar plates 10, places between the patrix 6 and counterdie 7 of press.
During assembling test spare; Positive plate (Fig. 4) is connected along tack line or sealing wire 18,21 with minus plate (Fig. 5) bonding standard or laser bonding flow process according to the rules; Form the closed structure of bipolar plates water cavity, room temperature is positioned over smooth, bright and clean place is stablized its performance.Bipolar plates water cavity mouth with switching performance after the stable tree lace that is bonded and sealed is specially: positive plate water cavity import and export 16,17 bonding positive plate water cavities sealing tree laces, and as shown in Figure 6; Minus plate water cavity import and export 19,20 bonding minus plate water cavity sealing tree laces, as shown in Figure 7.As shown in Figure 3, at 4 pilot holes, 15 place's installing and locating pins of the bottom plate 9 of testing end plate, this operation can guarantee to test between bipolar plates 10, test end plate upper head plate 8 and the test end plate bottom plate 9 and realize accurately locating.The bipolar plates 10 that glues the sealing tree lace is put on the test end plate bottom plate 9, and both rely on register pin accurately to locate.Close and test end plate upper head plate 8, the three relies on the register pin location equally.The end plate that installs specimen is lain against the centre position of press counterdie 7, and, apply certain pressure for the test end plate, make the test bipolar plates obtain positiver sealing through the rotary handle 5 on the rotary press patrix 6.Close the valve of stop valve 11, make proving installation airtight.
After above preliminary work finishes, begin test, at first open the valve of reduction valve 3, regulate pressure to 0.10MPa, treat that gaseous tension is stable after, observe precision pressure gauge 4 index variation situation in 2min with manual time-keeping.If index is constant, then regulates reduction valve 3 and improve pressure to 0.12MPa, 0.14MPa, 0.16MPa ..., pressurize is also observed precision pressure gauge 4.If bring up to certain pressure value and at this numerical value between hold period, the tensimeter index descends suddenly, then the pressure of this moment is judged to be the sealing intensity of bipolar plates water cavity.After sample detection finishes, close the valve of reduction valve 3 and gas cylinder 1, test job finishes.For example, hear when pressure increases to 3.02MPa " bang " sound, being accompanied by precision pressure gauge 4 index busts is 0, judges that then 3.02MPa is the sealing intensity of this bipolar plates water cavity.
The original upload pressure and the dwell time that it should be noted that test can rule of thumb suitably be adjusted, and to improve the more little then net result of pressure accurate more at every turn.
Claims (7)
1. the pick-up unit of a fuel battery double plates water cavity sealing intensity; Comprise source of the gas, gas communication pipeline, reduction valve (3), tensimeter (4), test end plate (8,9) and press composition; It is characterized in that: said test end plate is that two ends are thick, " recessed " shape structure of intermediate thin; Comprise test bottom plate and test upper head plate, the test bottom plate is " recessed " shape structure just, and corresponding test upper head plate is " recessed " shape structure;
The position at four angles of test bottom plate (9) be provided with tested bipolar plates (10) on the corresponding test bottom plate pilot hole (15) of pilot hole (22,23); One end of test upper head plate (8) is provided with the test upper head plate air admission hole (12) that is communicated with tested bipolar plates (10) water cavity import (16,19); The other end of test upper head plate (8) is provided with the test end plate venthole (13) that is communicated with tested bipolar plates (10) water cavity outlet (17,20); Test end plate venthole end connects stop valve (11), the position at four angles of test upper head plate (8) be provided with tested bipolar plates (10) on the corresponding test upper head plate pilot hole (14) of pilot hole (22,23); Test upper head plate pilot hole (14), test bottom plate pilot hole (15) and tested bipolar plates pilot hole (22,23) all are through holes, and register pin connects pilot hole; Test upper head plate air admission hole (12) is connected with reduction valve (3) through pipeline, and reduction valve (3) passes through pipeline and is connected with source of the gas, and tensimeter (4) is connected to be tested on upper head plate air admission hole (12) and the pipeline that reduction valve (3) is connected; The test lead plate holder is held tested bipolar plates (10), places between the patrix (6) and counterdie (7) of press.
2. the pick-up unit of fuel battery double plates water cavity sealing intensity according to claim 1 is characterized in that: the aperture of said test upper head plate pilot hole (14), test bottom plate pilot hole (15) is identical with the aperture of tested bipolar plates pilot hole (22,23).
3. the pick-up unit of fuel battery double plates water cavity sealing intensity according to claim 1 is characterized in that: the diameter of air admission hole of said test upper head plate (12) and venthole (13) is 5～10mm.
4. the pick-up unit of fuel battery double plates water cavity sealing intensity according to claim 1 is characterized in that: said tensimeter (4) is a precision pressure gauge, and the tensimeter precision is 0.002MPa.
5. the pick-up unit of fuel battery double plates water cavity sealing intensity according to claim 1 is characterized in that: said press is made up of rotary handle and upper and lower mould; Upper and lower mould is not of uniform size, and counterdie is a fixed big plane, and patrix is the symmetrical facet of right ends, through rotary handle patrix is moved down to the test end plate two ends application of force.
6. the pick-up unit of fuel battery double plates water cavity sealing intensity according to claim 1 is characterized in that: said source of the gas is gas cylinder (1), and test gas is air or nitrogen.
7. the method for testing of the pick-up unit of fuel battery double plates water cavity sealing intensity as claimed in claim 1 is characterized in that said method comprising the steps of:
A, cathode and anode unipolar plate bonding standard or laser bonding flow process according to the rules connects, and room temperature is positioned over smooth, bright and clean place is stablized its performance.
B, the sticking water cavity sealing of bipolar plates (10) tree lace that will connect after stablizing are placed on the test bottom plate (9), and through pilot hole and register pin location, placement test upper head plate (8) on it is also through pilot hole and register pin location;
C, the assembly to be tested that step b is assembled place between the patrix (6) and counterdie (7) of press, and rotary press rotary handle (5) is regulated the applied pressure size, realizes the positiver sealing to assembly to be tested;
D, close the test upper head plate gas outlet (13) end stop valve (11); Open source of the gas and regulate reduction valve (3) to pressure stability; And pressurize 2～5min; Observe the tensimeter (4) in the pipeline simultaneously, if tensimeter (4) no change between this hold period explains that then tested bipolar plates (10) water cavity sealing intensity is greater than this test pressure;
E, adjusting reduction valve (3); Improve test pressure; Treat pressure stability continued pressurize 2～5min, continue to observe the tensimeter (4) in the pipeline simultaneously, if tensimeter (4) between this hold period still no change explain that then bipolar plates water cavity sealing intensity is still greater than this test pressure;
F, repeating step e bring up to certain numerical value and at this numerical value between hold period, the tensimeter index descends suddenly until test pressure, and then the pressure of this moment is judged to be the sealing intensity of bipolar plates water cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110353507.1A CN102507105B (en) | 2011-11-09 | 2011-11-09 | Detection device for seal strength of bipolar plate water cavity of fuel cell and detection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110353507.1A CN102507105B (en) | 2011-11-09 | 2011-11-09 | Detection device for seal strength of bipolar plate water cavity of fuel cell and detection method thereof |
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| CN102507105A true CN102507105A (en) | 2012-06-20 |
| CN102507105B CN102507105B (en) | 2014-08-13 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108645573A (en) * | 2018-08-10 | 2018-10-12 | 麦格纳（太仓）汽车科技有限公司 | A kind of Vehicular lamp sealing propertytest integrated test facility and device |
| CN109301286A (en) * | 2018-11-21 | 2019-02-01 | 新源动力股份有限公司 | A kind of fuel battery double plates assembly area device for detecting sealability and detection method |
| CN109420899A (en) * | 2017-08-29 | 2019-03-05 | 上海铭寰新能源科技有限公司 | A kind of fuel cell press with removable tooling |
| CN109612650A (en) * | 2019-01-15 | 2019-04-12 | 安徽明天氢能科技股份有限公司 | Fuel cell bipolar plate tightness detecting tool |
| CN110470435A (en) * | 2019-09-19 | 2019-11-19 | 上海电气集团股份有限公司 | A kind of detection device and its method for flow battery material |
| CN111693195A (en) * | 2020-06-22 | 2020-09-22 | 上海捷氢科技有限公司 | Device and method for acquiring assembly force of fuel cell |
| WO2021103174A1 (en) * | 2019-11-27 | 2021-06-03 | 浙江嘉杰汽车设计有限公司 | Clamp for detecting density performance of fuel cell bipolar plate |
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| CN111693195A (en) * | 2020-06-22 | 2020-09-22 | 上海捷氢科技有限公司 | Device and method for acquiring assembly force of fuel cell |
| CN111693195B (en) * | 2020-06-22 | 2021-08-24 | 上海捷氢科技有限公司 | Device and method for acquiring assembly force of fuel cell |
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Effective date of registration: 20190709 Address after: 116085 No. 907 Huangpu Road, Dalian High-tech Park, Liaoning Province Co-patentee after: Saic Motor Corporation Limited Patentee after: Sunrise Power Co., Ltd. Address before: 116085 Huangpu Road 907, Dalian High-tech Park, Liaoning Province Patentee before: Sunrise Power Co., Ltd. |