CN105653797B - A kind of projectional technique and device of proton exchange film fuel cell electric piling assembling force - Google Patents
A kind of projectional technique and device of proton exchange film fuel cell electric piling assembling force Download PDFInfo
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- CN105653797B CN105653797B CN201511024417.2A CN201511024417A CN105653797B CN 105653797 B CN105653797 B CN 105653797B CN 201511024417 A CN201511024417 A CN 201511024417A CN 105653797 B CN105653797 B CN 105653797B
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- 239000000446 fuel Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000003825 pressing Methods 0.000 claims abstract description 30
- 239000001301 oxygen Substances 0.000 claims abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000001257 hydrogen Substances 0.000 claims abstract description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 56
- 238000012545 processing Methods 0.000 claims description 15
- 238000004458 analytical method Methods 0.000 claims description 11
- 241001269238 Data Species 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000010191 image analysis Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000011897 real-time detection Methods 0.000 claims 1
- 230000005611 electricity Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/06—Power analysis or power optimisation
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- Physics & Mathematics (AREA)
- Geometry (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Fuel Cell (AREA)
- Pure & Applied Mathematics (AREA)
- Mathematical Optimization (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Analysis (AREA)
- Computational Mathematics (AREA)
Abstract
The invention discloses the projectional techniques and device of a kind of proton exchange film fuel cell electric piling assembling force, which comprises is sealed respectively to the bipolar plates hydrogen of fuel cell pile to be measured, oxygen two sides；One group of pressure is applied to pile using electronic universal tester；It collects and records under each pressure condition, corresponding bipolar plates and MEA contact condition image；Based on above-mentioned contact condition image, the pressure distributed data that bipolar plates and MEA are had point of contact under different pressures is obtained；Based on pressure distributed data, all point pressure force value are obtained；The seal area and flow field zone position of bipolar plates are judged simultaneously；And based on all point pressure force value and seal area and flow field zone position, obtains different pressures lower sealed region and flow field area and distinguish pressure value relation curve；It searches the minimum value of pressing force when contact resistance is constant value and finds its corresponding pressure, this pressure is the assembling force of pile.The present invention can easily and accurately extrapolate proton exchange film fuel cell electric piling assembling force.
Description
Technical field
The present invention relates to fuel cell test method fields, particularly relate to proton exchanging film fuel battery electricity
The projectional technique and device of heap assembling force.
Background technique
The core component of proton exchange film fuel cell electric piling is three-in-one membrane electrode assembly (MEA) and bipolar plates, and MEA
Matching relationship between bipolar plates is the key that pile assembling again, therefore pressing force between the two must be in certain pressure model
Enclose the interior sealing performance that just can ensure that pile and battery internal resistance.
There is good contact in the prior art to guarantee respectively to save the MEA in single pond and bipolar plates in pile, is usually prepared in MEA
After technique sizing, MEA and the bipolar plates with flow field or part of it are subjected to pressing force and contact resistance is tested.Work as pressing force
It (MPa) is after pressing force reaches certain value with the relation curve of contact resistance, contact resistance keeps constant value, is by contact resistance
Pressing force when constant value is converted into assembling force, to determine pile assembling force.
But in fact, since pile group is by its different sealing structure, the factors such as contact condition between MEA and bipolar plates
Cause, the having a certain difference property of stress condition of pile group, if using prior art means, the assembling force of pile group completely
Certainly there is a problem of higher or relatively low, when assembling force is higher, will cause phase enantiotropy between MEA and bipolar plates even
Damage, can seriously affect performance and the service life of fuel cell pile at this time, when assembling force is relatively low, bipolar plates can be made to connect with MEA
Touch insufficient, pile internal resistance increase.
Therefore it needs to extrapolate or extrapolates the best assembling force of fuel cell pile as far as possible so that fuel cell plays most preferably
Effect.
Summary of the invention
In view of defects in the prior art, the invention aims to provide one kind can easily and accurately calculate pledge
The method of proton exchange film fuel cell pile assembling force.
To achieve the goals above, technical solution of the present invention:
A kind of projectional technique of proton exchange film fuel cell electric piling assembling force, it is characterised in that: include the following steps
S1, sealing structure of choosing any one kind of them respectively are sealed the bipolar plates hydrogen of fuel cell pile to be measured, oxygen two sides；
S2, pressure sensing element is placed between the bipolar plates and MEA of fuel cell pile described in S1 and utilizes electronics
The end plate up and down of universal testing machine applies one group of pressure to the fuel cell pile for being placed with pressure sensing element；
S3, it collects and records under each pressure condition, corresponding bipolar plates and MEA contact condition image；
S4, each bipolar plates and MEA contact condition image are based on, under acquisition different pressures, bipolar plates with MEA is all connects
The pressure distributed data of contact；
S5, all pressure distributed datas in S4 are based on, obtain all contact point corresponding pressure values；Simultaneously according in S3
Bipolar plates and MEA contact condition image judge the seal area and flow field zone position of bipolar plates；And it is had point of contact based on above-mentioned
Pressure value and seal area and flow field zone position obtain different pressures lower sealed region pressure value relation curve and flow field area respectively
Pressure value relation curve；
S6, between bipolar plates and MEA in the relation curve of pressing force and contact resistance search contact resistance be constant value when
The minimum value of pressing force；
S7, the corresponding pressure of pressing force minimum point is found in the stress curve of flow field area at various pressures, this pressure is
The assembling force of the corresponding pile of S1 sealing structure.
Further, the bipolar plates in the S1 refer to that the composite dual-electrode plates of arbitrary shape or graphite bi-polar plate or metal are double
Pole plate；The sealing structure refers to sealing structure of different shapes and the sealing structure of different plot ratio any one combining form
Sealing structure；Wherein sealing structure of different shapes refers to semicircle, flat, round, any one in special-shaped sealing structure
Sealing structure, the sealing structure of different plot ratio refer to any one in the sealing structure that plot ratio range is 70%-110%
The corresponding sealing structure of plot ratio.
Further, the S5 includes:
Firstly, contact point each in S4 is obtained by weight of contact point pressure distributed data is multiplied by corresponding contact point area
The corresponding point pressure force value in each contact point, while being judged with MEA contact condition image according to the bipolar plates in S3 bipolar
The seal area and flow field zone position of plate；Then all point pressure force value of bipolar plates seal area are summed it up to obtain seal area pressure
Value, all point pressure force value in bipolar plate flow field area are summed it up to obtain flow field area pressure value, the adduction of the two pressure value is equal to
The pressure that electronic universal tester applies under the conditions of this Image Acquisition, and then obtain different pressures lower sealed region and flow field area and distinguish
The relation curve of pressure value.
Based on the above method, the present invention also provides a kind of dress for calculating proton exchange film fuel cell electric piling assembling force
Set, it is described survey the bipolar plates hydrogen of fuel cell pile, oxygen two sides sealing structure of choosing any one kind of them is sealed, it is characterised in that:
The pressure sensing element being placed between the bipolar plates and MEA of the fuel cell pile is used for real-time inspection
Survey the pressure between bipolar plates and MEA；
Electronic universal tester, the electronic universal tester are used for the fuel cell pile for being placed with pressure sensing element
Apply one group of pressure；
Signal reception processing unit, the signal reception processing unit are corresponding for collecting and recording under each pressure condition
Bipolar plates and MEA contact condition image；
Analysis and processing unit, the analysis and processing unit are used to carry out figure to each bipolar plates and MEA contact condition image
The assembling force of the corresponding pile of current sealing structure is obtained as analysis processing；Described image analyzes treatment process: 1., based on each
The bipolar plates and MEA contact condition image obtain bipolar plates and MEA under different pressures and have point of contact corresponding pressure
Distributed data；2., to obtain by weight of contact point pressure distributed data is multiplied by corresponding contact point area each contact point corresponding
Point pressure force value, while above-mentioned bipolar plates and MEA contact condition image judge the seal area and flow field zone position of bipolar plates；
3., based on above-mentioned all point pressure force value and seal area and flow field zone position, respectively suffered by acquisition different pressures lower sealed region
Pressure value relation curve and flow field area pressure value relation curve；4., above-mentioned different pressures flow down place stress curve in
The corresponding pressure of pressing force minimum point is found, this pressure is the assembling force of corresponding pile.
Further, the bipolar plates refer to the composite dual-electrode plates or graphite bi-polar plate or metal double polar plates of arbitrary shape；
The sealing structure refers to the close of sealing structure of different shapes and the sealing structure of different plot ratio any one combining form
Seal structure；Wherein sealing structure of different shapes refers to semicircle, any one flat, round, in special-shaped sealing structure sealing
Structure, the sealing structure of different plot ratio refer to any one volume in the sealing structure that plot ratio range is 70%-110%
The corresponding sealing structure of rate.
Further, 3. referring to all point pressure force value of bipolar plates seal area in described image analysis treatment process
Adduction obtains seal area pressure value, all point pressure force value in bipolar plate flow field area is summed it up to obtain flow field area pressure value, by two
The adduction of person's pressure value is equal to the pressure of electronic universal tester application under the conditions of this Image Acquisition, and then obtains under different pressures
The relation curve of seal area pressure value and the relation curve of flow field area pressure value.
The pressing force minimum point refers to be looked into the relation curve of pressing force and contact resistance between bipolar plates and MEA
Look for contact resistance be constant value when pressing force minimum value.
Compared with prior art, beneficial effects of the present invention:
1. pair bipolar plates are close using different shape (semicircle, flat, round, special-shaped), different plot ratio (70%-110%)
Seal structure can obtain the pile assembling force under different sealing structure by the method, be conducive to bipolar plate sealing mechanisms sealing
The optimization and verifying of performance；
2. being conducive to accurately determine assembling force using different templates or the pile of material bipolar plates, the close of pile both can guarantee
Sealing property also ensures that battery internal resistance minimum；
3. carrying out calculation system using easily and efficiently test method, keeps experimental result more accurate, prevent electricity
The phenomenon that heap pressure is excessive or pressure is too small, it is ensured that the performance of pile performs to optimum level.
Detailed description of the invention
Fig. 1 is schematic structural diagram of the device of the invention；
The corresponding flow chart of steps of Fig. 2 the method for the invention；
The relation curve of pressing force and contact resistance between Fig. 3 bipolar plates and MEA；
Fig. 4 is the pressure distributed data that bipolar plates and MEA contact all the points；
Fig. 5 is the dirty place of different pressures and seal area stress curve figure.
In figure: 1, electronic universal tester, 2, upper head plate, 3, MEA, 4, pressure sensing element, 5, bipolar plates (band sealant
Line), 6, bottom plate, 7, signal reception processing unit, 8, host computer.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing, to the present invention into
Row is further described.
For the existing insufficient situation of pile assembling force means of testing, the present invention designs a kind of convenience, accurately calculates proton
The method of exchange film fuel battery pile assembling force, it is characterized in that the bipolar plates and MEA by pond single under different pressures are indirectly
Touching state verification obtains the relationship between bipolar plates seal area stress and pressure, when seal area stress is f, obtains the group of pile
Fill pressure F, wherein bipolar plates and electrode are carried out pressing force and contact resistance is tested, obtain contact resistance it is constant when pressing force most
Small value f can directly find acquisition by the relation curve of pressing force and contact resistance between common bipolar plates and MEA.This method
Corresponding pile assembling force is determined using convenient, fast, digitization means, not only be ensure that the sealing performance of pile but also is ensured
The performance of pile performs to most preferably.
Specifically, as shown in Fig. 2, a kind of projectional technique of proton exchange film fuel cell electric piling assembling force, special
Sign is
It the described method comprises the following steps:
A, sealing tree lace is loaded into bipolar plates hydrogen, oxygen two sides respectively, this sealing tree lace can be semicircle, flat, round, special-shaped
Tree lace any one, plot ratio range optional plot ratio between 70%-110%；
B, pressure sensing cells are placed between bipolar plates and MEA, three is clamped with end plate and is placed on electronic universal tester
On；
C, host computer and the acquisition handle connection of I-Scan pressure analysis system data；The preferred computer of host computer；
D, electronic universal tester applies one group of pressure, and assembling force range is 0-40KN；
E, host computer saves under each assembling force, and I-Scan pressure analysis system acquires image, this image is that display is bipolar
Plate and MEA contact condition figure；
F, setting I-Scan pressure analysis system processing software handles its collected each image, obtains bipolar
The pressure distributed data of plate and MEA contact all the points, is shown in Fig. 4, and wherein label 9 is all contact point pressure datas in flow field area, mark
Numbers 10 be all contact point pressure datas of seal area；
G, the I-Scan pressure analysis system processing software is based on all pressure distributed datas in f, obtains all contacts
Point corresponding pressure value；Judge seal area and the flow field of bipolar plates with MEA contact condition image according to the bipolar plates in e simultaneously
Zone position；And based on above-mentioned all point pressure force value and seal area and flow field zone position, obtain close under acquisition different pressures respectively
Seal area's pressure value relation curve and flow field area pressure value relation curve；
H, from relation curve (the i.e. song given by Fig. 3 of pressing force between common bipolar plates and MEA and contact resistance
Line, wherein abscissa f be pressing force, ordinate R be contact resistance value, f1 be R it is constant when minimum pressing force) in contacted
The minimum value of pressing force when resistance is constant value；
I, the corresponding pressure of pressing force minimum point is found in the stress curve of flow field area at various pressures, this pressure is
The assembling force of pile is shown in Fig. 5, and wherein F is the assembling force of electronic universal tester, and f is region pressure value, and f1 is that R is constant
When minimum pressing force, F1 is pile stacking pressure, and label 11, different pressures flow down place stress relation curve, label 12, no
With pressure lower sealed region stress relation curve.
As shown in Figure 1, device of the present invention includes pressure sensing element 4, electronic universal tester 1, signal reception
Processing unit 7, the analysis and processing unit being installed in computer 8；Bipolar plates 5 select long 410mm, wide 100mm, flow field area area
300cm2, the specific course of work are as follows: first connect pressure sensing element 4, signal reception processing unit 7 and computer 8
Come；Corresponding sealing tree lace is loaded into 5 hydrogen-oxygen side of bipolar plates respectively, pressure sensing element 4 is clipped among MEA3 and bipolar plates 5,
It is placed on electronic universal tester 1 after being clamped with upper head plate 2 and bottom plate 6；
For subsequent electronic universal tester 1 to the clamping pile on-load pressure, loading force is respectively 10,20,30,40KN,
Under each pressure, the image that the analysis and processing unit being installed in computer 8 acquires signal reception processing unit 7 is protected
It deposits, and the image acquired under each pressure is handled, had point of contact pressure distributed data is obtained, according to point pressure
Strong distributed data obtains the corresponding point pressure force value in each contact point multiplied by the conversion of corresponding contact point area；Bipolar plates 5 are close
Envelope area sums it up respectively with flow field area stress, obtains 5 seal area of bipolar plates and flow field area under different pressures and distinguishes stress relation curve；
It determines that the corresponding pressure of the constant pressing force minimum point of contact resistance is f1, is found in flow field area pressure and stress curve when stream
Place pressure corresponding stack pressure F1 when being f1, pressure F1 is pile assembling force at this time.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (5)
1. a kind of projectional technique of proton exchange film fuel cell electric piling assembling force, it is characterised in that: include the following steps
S1, sealing structure of choosing any one kind of them respectively are sealed the bipolar plates hydrogen of fuel cell pile to be measured, oxygen two sides；
S2, pressure sensing element is placed between the bipolar plates and MEA of fuel cell pile described in S1 and utilizes electronic universal
The end plate up and down of testing machine applies one group of pressure to the fuel cell pile for being placed with pressure sensing element；
S3, it collects and records under each pressure condition, corresponding bipolar plates and MEA contact condition image；
S4, it is based on each bipolar plates and MEA contact condition image, obtained under different pressures, bipolar plates are had point of contact with MEA
Pressure distributed data；
S5, all pressure distributed datas in S4 are based on, obtain all contact point corresponding pressure values；Simultaneously according to bipolar in S3
Plate and MEA contact condition image judge the seal area and flow field zone position of bipolar plates；And it is based on above-mentioned all contact point pressure
Value and seal area and flow field zone position obtain different pressures lower sealed region pressure value relation curve and flow field area pressure
It is worth relation curve；
S6, contact resistance is searched in the relation curve of pressing force and contact resistance between bipolar plates and MEA to compress when constant value
The minimum value of power；
S7, the corresponding pressure of pressing force minimum point is found in the stress curve of flow field area at various pressures, this pressure, that is, S1 is close
The assembling force of the corresponding pile of seal structure；
The sealing structure refers to sealing structure of different shapes and the sealing structure of different plot ratio any one combining form
Sealing structure；Wherein sealing structure of different shapes refers to semicircle, flat, round, any one in special-shaped sealing structure
Sealing structure, the sealing structure of different plot ratio refer to any one in the sealing structure that plot ratio range is 70%-110%
The corresponding sealing structure of plot ratio.
2. the projectional technique of proton exchange film fuel cell electric piling assembling force according to claim 1, it is characterised in that:
Bipolar plates in the S1 refer to the composite dual-electrode plates or graphite bi-polar plate or metal double polar plates of arbitrary shape.
3. a kind of device for calculating proton exchange film fuel cell electric piling assembling force, the bipolar plates hydrogen of the fuel cell pile,
Oxygen two sides sealing structure of choosing any one kind of them is sealed, it is characterised in that:
The pressure sensing element being placed between the bipolar plates and MEA of the fuel cell pile, it is bipolar to be used for real-time detection
Pressure between plate and MEA；
Electronic universal tester, the electronic universal tester are used to apply the fuel cell pile for being placed with pressure sensing element
One group of pressure；
Signal reception processing unit, the signal reception processing unit are corresponding double for collecting and recording under each pressure condition
Pole plate and MEA contact condition image；
Analysis and processing unit, the analysis and processing unit are used to carry out image point to each bipolar plates and MEA contact condition image
Analysis is handled to obtain the assembling force of the corresponding pile of current sealing structure；Described image analyzes treatment process: 1., based on each described
Bipolar plates and MEA contact condition image obtain bipolar plates and MEA under different pressures and have point of contact corresponding pressure distribution
Data；2., the corresponding contact in each contact point is obtained by weight of contact point pressure distributed data is multiplied by corresponding contact point area
Force value is pressed, while above-mentioned bipolar plates and MEA contact condition image judge the seal area and flow field zone position of bipolar plates；③,
Based on above-mentioned all point pressure force value and seal area and flow field zone position, different pressures lower sealed region pressure is obtained respectively
It is worth relation curve and flow field area pressure value relation curve；4., above-mentioned different pressures flow down place stress curve in find
The corresponding pressure of pressing force minimum point, this pressure are the assembling force of corresponding pile；
The bipolar plates refer to the composite dual-electrode plates or graphite bi-polar plate or metal double polar plates of arbitrary shape；The sealing structure is
Refer to the sealing structure of any one combining form of sealing structure of different shapes and the sealing structure of different plot ratio；It is wherein different
The sealing structure of shape refers to semicircle, any one flat, round, in special-shaped sealing structure sealing structure, different plot ratio
Sealing structure refer to that the corresponding sealing of any one plot ratio in sealing structure that plot ratio range is 70%-110% is tied
Structure.
4. the device according to claim 3 for calculating proton exchange film fuel cell electric piling assembling force, it is characterised in that:
3. referring to sum it up all point pressure force value of bipolar plates seal area and sealed in described image analysis treatment process
All point pressure force value in bipolar plate flow field area are summed it up to obtain flow field area pressure value by area's pressure value, by adding for the two pressure value
Pressure with being equal to electronic universal tester under the conditions of this Image Acquisition and applying, and then obtains different pressures lower sealed region and is pressurized
The relation curve of force value and the relation curve of flow field area pressure value.
5. the device according to claim 3 for calculating proton exchange film fuel cell electric piling assembling force, it is characterised in that:
The pressing force minimum point, which refers to search in the relation curve of pressing force and contact resistance between bipolar plates and MEA, to be connect
The minimum value of pressing force when electric shock resistance is constant value.
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| CN201511024417.2A CN105653797B (en) | 2015-12-30 | 2015-12-30 | A kind of projectional technique and device of proton exchange film fuel cell electric piling assembling force |
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| CN110865248B (en) * | 2018-08-27 | 2023-03-03 | 上海汽车集团股份有限公司 | Membrane electrode performance testing system and method |
| CN110429298B (en) * | 2019-08-05 | 2020-10-09 | 上海骥翀氢能科技有限公司 | Detection device and method for proton exchange membrane fuel cell |
| CN111161248B (en) * | 2019-12-30 | 2023-06-02 | 新源动力股份有限公司 | Fuel cell stack assembly force distribution analysis method applying machine learning and data regression |
| 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 |
| CN111912550B (en) * | 2020-06-30 | 2022-06-21 | 上海氢晨新能源科技有限公司 | Method for calculating real-time assembling force of fuel cell |
| CN112162199B (en) * | 2020-09-01 | 2023-12-08 | 湖北德普电气股份有限公司 | Auxiliary pile simulation device for hydrogen fuel cell power generation system test |
| CN114894359B (en) * | 2022-03-31 | 2023-08-15 | 东风汽车集团股份有限公司 | Method and device for detecting fastening force of fuel cell stack |
| CN115207428B (en) * | 2022-09-16 | 2023-01-20 | 深圳市氢蓝时代动力科技有限公司 | Press mounting method and system for fuel cell stack |
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Denomination of invention: A Method and Device for Calculating the Assembly Force of Proton Exchange Membrane Fuel Cell Stacks Effective date of registration: 20231026 Granted publication date: 20190215 Pledgee: Industrial Bank Limited by Share Ltd. Dalian branch Pledgor: Sunrise Power Co.,Ltd. Registration number: Y2023980062978 |