CN113013436A - Metal bipolar plate structure capable of being sealed firstly and then welded and assembling method thereof - Google Patents
Metal bipolar plate structure capable of being sealed firstly and then welded and assembling method thereof Download PDFInfo
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- CN113013436A CN113013436A CN202110219056.6A CN202110219056A CN113013436A CN 113013436 A CN113013436 A CN 113013436A CN 202110219056 A CN202110219056 A CN 202110219056A CN 113013436 A CN113013436 A CN 113013436A
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- 239000002184 metal Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000110 cooling liquid Substances 0.000 claims abstract description 275
- 238000007789 sealing Methods 0.000 claims abstract description 158
- 239000001257 hydrogen Substances 0.000 claims abstract description 148
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 148
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 136
- 229920001971 elastomer Polymers 0.000 claims abstract description 74
- 238000003466 welding Methods 0.000 claims abstract description 46
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 15
- 239000003292 glue Substances 0.000 claims description 66
- 239000002826 coolant Substances 0.000 claims description 43
- 230000007704 transition Effects 0.000 claims description 16
- 239000000565 sealant Substances 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 2
- 230000008676 import Effects 0.000 claims 6
- 239000007788 liquid Substances 0.000 claims 4
- 239000000446 fuel Substances 0.000 abstract description 5
- 239000003570 air Substances 0.000 description 99
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/026—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant characterised by grooves, e.g. their pitch or depth
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/0265—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant the reactant or coolant channels having varying cross sections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0267—Collectors; Separators, e.g. bipolar separators; Interconnectors having heating or cooling means, e.g. heaters or coolant flow channels
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0286—Processes for forming seals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
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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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- General Chemical & Material Sciences (AREA)
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Abstract
The invention relates to the technical field of fuel cells, and discloses a metal bipolar plate structure capable of being sealed firstly and then welded, which comprises a first polar plate and a second polar plate, wherein a cooling liquid flow passage is formed by the first polar plate and the second polar plate through a welding envelope line, an air inlet and a cooling liquid inlet and a hydrogen outlet are respectively arranged on the first polar plate and the second polar plate, the cooling liquid inlet and the cooling liquid inlet are positioned in the welding envelope line, a first polar plate contour sealing rubber line, a hydrogen sealing rubber line and a cooling liquid sealing rubber line are arranged on the first polar plate, a second polar plate contour sealing rubber line, an air sealing rubber line and a cooling liquid sealing rubber line are arranged on the second polar plate, and the hydrogen sealing rubber line, the air sealing rubber line and the cooling liquid sealing rubber line are all not crossed with the welding envelope line. The invention also discloses an assembly method of the metal bipolar plate structure capable of sealing and welding. The invention relates to a metal bipolar plate structure capable of sealing first and then welding and an assembly method thereof.
Description
Technical Field
The invention relates to the technical field of fuel cells, in particular to a metal bipolar plate structure capable of being sealed firstly and then welded and an assembly method thereof.
Background
The proton exchange membrane fuel cell is widely researched in the energy field due to the characteristics of high efficiency, energy conservation, cleanness and the like, and the bipolar plate is used as an important part of the proton exchange membrane fuel cell and has the functions of gas distribution, electric conduction, water distribution, cooling and the like. The sealing rubber wire arrangement of the bipolar plate influences the sealing performance of the whole galvanic pile, and the sealing rubber wire is properly arranged on the bipolar plate, so that the leakage probability of air, hydrogen and cooling liquid in the bipolar plate can be reduced, and the reliability of the galvanic pile is influenced. In the traditional process, the bipolar plate is welded and then sealed, the welding wire is directly covered by the sealing glue line, and the uneven welding wire influences the structure of the sealing glue line and influences the sealing performance. Therefore, the reasonable arrangement of the sealing rubber wires and the welding wires has important significance for improving the sealing performance and the reliability of the galvanic pile.
Chinese patent (published: 2011, 01/04/h, publication No. CN102306805A) discloses a metal bipolar plate, which is formed by connecting a cathode and an anode unipolar plates, wherein two sides of the cathode and the anode unipolar plates are provided with three-cavity common pipelines, the middle part is provided with a direct-flow-field flow channel, a distribution flow channel and an inlet-outlet flow channel, the direct-flow-field flow channel is composed of parallel bulges and grooves, the distribution flow channel is composed of flow-guiding islands and support points with reverse bulges which are regularly arranged, the inlet side and the outlet side of the cathode and the anode unipolar plates are in an asymmetric structure, and the area of the inlet of the air cavity common pipeline is 0.1-0.5 times larger than that of the outlet. Although a schematic diagram of the sealant line is shown, the situation of the bonding wire is not illustrated, and the bonding wire affects the arrangement of the sealant line and the sealing performance during the production process.
Chinese patent (published: 24.07/2013, publication number: CN203085681U) discloses a fuel cell metal bipolar plate with enhanced sealing performance, which comprises an oxygen electrode plate and a hydrogen electrode plate which are connected into a whole by bonding or welding to form the bipolar plate, wherein an oxygen glue line frame on the oxygen electrode plate and the oxygen electrode plate are in an integral structure, namely the oxygen glue line frame is molded with a flow channel and a common opening on the oxygen electrode plate; the hydrogen rubber wire frame on the hydrogen pole plate and the hydrogen pole plate are of a split structure, namely the hydrogen rubber wire frame and the hydrogen pole plate are of two independent structures, and the hydrogen rubber wire frame is bonded to the hydrogen pole plate. The overall strength and the overall flatness of the metal bipolar plate are improved; the matching and alignment during the assembly of the electric pile are facilitated; the sealing stability of the metal bipolar plate is improved; the reliability of the metal plate stack in the operation process is improved, and the service life of the stack is prolonged. However, the influence of welding on the arrangement of the sealing rubber wires is not considered, and the arrangement condition of the welding wires is not considered.
Disclosure of Invention
The invention aims to provide a metal bipolar plate structure capable of sealing first and then welding and an assembly method thereof, aiming at the defects of the technology, the metal bipolar plate structure can be sealed first and then welded, a sealing glue line and a welding envelope line are not interfered, and the sealing effect is good.
In order to achieve the above purpose, the metal bipolar plate structure capable of being sealed first and then welded according to the present invention includes a first electrode plate and a second electrode plate which are symmetrical to each other, wherein a first surface of the first electrode plate is set as an air flow channel reaction region, a first surface of the second electrode plate is set as a hydrogen flow channel reaction region, and a cooling liquid flow channel is formed between a second surface of the first electrode plate and a second surface of the second electrode plate by welding an envelope line;
the first polar plate is provided with a first polar plate air inlet, a first polar plate cooling liquid inlet and a first polar plate hydrogen inlet, and the first polar plate is also provided with a first polar plate air outlet, a first polar plate cooling liquid outlet and a first polar plate hydrogen outlet;
the second polar plate is provided with a second polar plate air inlet, a second polar plate cooling liquid inlet and a second polar plate hydrogen inlet, and the second polar plate is also provided with a second polar plate air outlet, a second polar plate cooling liquid outlet and a second polar plate hydrogen outlet;
the first pole plate cooling liquid inlet, the first pole plate cooling liquid outlet, the second pole plate cooling liquid inlet and the second pole plate cooling liquid outlet are all located inside the welding envelope line, and the first pole plate air inlet, the first pole plate hydrogen inlet, the first pole plate air outlet, the first pole plate hydrogen outlet, the second pole plate air inlet, the second pole plate hydrogen inlet, the second pole plate air outlet and the second pole plate hydrogen outlet are all located outside the welding envelope line;
a circle of first polar plate outline sealing rubber lines which wind the edge of the first polar plate are arranged on the first surface of the first polar plate, closed hydrogen sealing rubber lines are respectively arranged on the first surface of the first polar plate at the hydrogen inlet and the hydrogen outlet of the first polar plate, and closed cooling liquid sealing rubber lines are respectively arranged on the first surface of the first polar plate at the cooling liquid inlet and the cooling liquid outlet of the first polar plate;
a circle of second plate outline sealing glue lines are arranged on the first surface of the second plate and surround the edge of the second plate, closed air sealing glue lines are respectively arranged on the first surface of the second plate and positioned at the edges of the second plate air inlet and the second plate air outlet, and closed cooling liquid sealing glue lines are respectively arranged on the first surface of the second plate and positioned at the edges of the second plate cooling liquid inlet and the second plate cooling liquid outlet;
the hydrogen gas sealing rubber line, the air gas sealing rubber line and the cooling liquid sealing rubber line are not crossed with the welding envelope line.
Preferably, a first pole plate outer flange which is wound around the edge of the first pole plate is arranged on the first surface of the first pole plate, a first pole plate profile sealing rubber line is positioned on the inner side of the first pole plate outer flange, a first pole plate hydrogen inlet flange is arranged on the first surface of the first pole plate and positioned at the edge of the first pole plate hydrogen inlet, a first pole plate hydrogen outlet flange is arranged on the edge of the first pole plate hydrogen outlet, the hydrogen sealing rubber line is respectively positioned on the outer sides of the first pole plate hydrogen inlet flange and the first pole plate hydrogen outlet flange, a first pole plate cooling liquid inlet inner flange and a first pole plate cooling liquid inlet outer flange are arranged on the edge of the first pole plate cooling liquid inlet on the first surface of the first pole plate, and the first pole plate cooling liquid inlet inner flange is positioned inside the first pole plate cooling liquid inlet outer flange, the cooling liquid sealing rubber line arranged on the edge of the first pole plate cooling liquid inlet is positioned between the first pole plate cooling liquid inlet inner flange and the first pole plate cooling liquid inlet outer flange, the edge of the first pole plate cooling liquid outlet on the first surface of the first pole plate is provided with a first pole plate cooling liquid outlet inner flange and a first pole plate cooling liquid outlet outer flange, the first pole plate cooling liquid outlet inner flange is positioned inside the first pole plate cooling liquid outlet outer flange, and the cooling liquid sealing rubber line arranged on the edge of the first pole plate cooling liquid outlet is positioned between the first pole plate cooling liquid outlet inner flange and the first pole plate cooling liquid outlet outer flange.
Preferably, a second pole plate outer flange which surrounds the second pole plate edge in a circle is arranged on the first surface of the second pole plate, a second pole plate air inlet flange is arranged on the edge of the second pole plate air inlet on the first surface of the second pole plate, a second pole plate air outlet flange is arranged on the edge of the second pole plate air outlet, the air sealing lines are respectively arranged on the outer sides of the second pole plate air inlet flange and the second pole plate air outlet flange, a second pole plate cooling liquid inlet inner flange and a second pole plate cooling liquid inlet outer flange are arranged on the edge of the second pole plate cooling liquid inlet on the first surface of the second pole plate, and the second pole plate cooling liquid inlet inner flange is arranged inside the second pole plate cooling liquid inlet outer flange, the cooling liquid sealing rubber line arranged at the edge of the second pole plate cooling liquid inlet is positioned between the second pole plate cooling liquid inlet inner flange and the second pole plate cooling liquid inlet outer flange, the edge of the first face of the second pole plate, which is positioned at the second pole plate cooling liquid outlet, is provided with a second pole plate cooling liquid outlet inner flange and a second pole plate cooling liquid outlet outer flange, the second pole plate cooling liquid outlet inner flange is positioned inside the second pole plate cooling liquid outlet outer flange, and the cooling liquid sealing rubber line arranged at the edge of the second pole plate cooling liquid outlet is positioned between the second pole plate cooling liquid outlet inner flange and the second pole plate cooling liquid outlet outer flange.
Preferably, a first electrode plate active area is arranged on the first surface of the first electrode plate, and the first electrode plate active area is communicated with the first electrode plate air inlet through a first electrode plate inlet transition area and is communicated with the first electrode plate air outlet through a first electrode plate outlet transition area; and the first surface of the second polar plate is provided with a second polar plate active region, and the second polar plate active region is communicated with the hydrogen inlet of the second polar plate through a second polar plate inlet transition region and communicated with the hydrogen outlet of the second polar plate through a second polar plate outlet transition region.
Preferably, the first plate air inlet, the first plate cooling liquid inlet and the first plate hydrogen inlet are located at one end of the first plate, and the first plate air outlet, the first plate cooling liquid outlet and the first plate hydrogen outlet are located at the other end of one end of the first plate; and the second plate air inlet, the second plate cooling liquid inlet and the second plate hydrogen inlet are positioned at one end of the second plate, and the second plate air outlet, the second plate cooling liquid outlet and the second plate hydrogen outlet are positioned at the other end of the second plate.
Preferably, the first plate coolant inlet is located between the first plate air inlet and the first plate hydrogen inlet, the first plate coolant outlet is located between the first plate air outlet and the first plate hydrogen outlet, the second plate coolant inlet is located between the second plate air inlet and the second plate hydrogen inlet, and the second plate coolant outlet is located between the second plate air outlet and the second plate hydrogen outlet.
Preferably, the first plate air inlet and the first plate air outlet are located at opposite corners of the first plate, the first plate hydrogen inlet and the first plate hydrogen outlet are located at opposite corners of the first plate, the second plate air inlet and the second plate air outlet are located at opposite corners of the second plate, and the second plate hydrogen inlet and the second plate hydrogen outlet are located at opposite corners of the second plate.
A method of assembling said sealable weldable metal bipolar plate structure comprising the steps of:
A) laying a sealing glue line: laying a first polar plate outline sealing rubber line on the edge of the first surface of the first polar plate, laying a hydrogen sealing rubber line on the edges of a first polar plate hydrogen inlet and a first polar plate hydrogen outlet, and laying a cooling liquid sealing rubber line on the edges of a first polar plate cooling liquid inlet and a first polar plate cooling liquid outlet; laying a second plate outline sealing glue line on the edge of the first surface of the second plate, laying an air sealing glue line on the edges of the second plate air inlet and the second plate air outlet, and laying a cooling liquid sealing glue line on the edges of the second plate cooling liquid inlet and the second plate cooling liquid outlet;
B) and attaching the second surface of the first polar plate to the second surface of the second polar plate, positioning, welding along the welding envelope line, and welding and connecting the first polar plate and the second polar plate.
Preferably, a first pole plate outer flange which surrounds the edge of the first pole plate by a circle is arranged on the first surface of the first pole plate, a first pole plate hydrogen inlet flange is arranged on the edge of the first pole plate hydrogen inlet on the first surface of the first pole plate, a first pole plate hydrogen outlet flange is arranged on the edge of the first pole plate hydrogen outlet, a first pole plate cooling liquid inlet inner flange and a first pole plate cooling liquid inlet outer flange are arranged on the edge of the first pole plate cooling liquid inlet on the first surface of the first pole plate, the first pole plate cooling liquid inlet inner flange is arranged inside the first pole plate cooling liquid inlet outer flange, a first pole plate cooling liquid outlet inner flange and a first pole plate cooling liquid outlet are arranged on the edge of the first pole plate cooling liquid outlet on the first surface of the first pole plate, the first pole plate cooling liquid outlet outer flange is arranged inside the first pole plate cooling liquid outlet, a second pole plate outer flange which is wound around the edge of the second pole plate is arranged on the first surface of the second pole plate, a second pole plate air inlet flange is arranged on the edge of the second pole plate air inlet on the first surface of the second pole plate, a second pole plate air outlet flange is arranged on the edge of the second pole plate air outlet, a second pole plate cooling liquid inlet inner flange and a second pole plate cooling liquid inlet outer flange are arranged on the edge of the second pole plate cooling liquid inlet on the first surface of the second pole plate, the second pole plate cooling liquid inlet inner flange is positioned inside the second pole plate cooling liquid inlet outer flange, a second pole plate cooling liquid outlet inner flange and a second pole plate cooling liquid outlet outer flange are arranged on the edge of the second pole plate cooling liquid outlet on the first surface of the second pole plate, and the second pole plate cooling liquid outlet inner flange is positioned inside the second pole plate cooling liquid outlet, when the sealing rubber line is laid, the first polar plate outline sealing rubber line is positioned on the inner side of the first polar plate outer flange, the hydrogen sealing rubber line is respectively positioned on the outer sides of the first polar plate hydrogen inlet flange and the first polar plate hydrogen outlet flange, the cooling liquid sealing rubber line arranged on the edge of the first polar plate cooling liquid inlet is positioned between the first polar plate cooling liquid inlet inner flange and the first polar plate cooling liquid inlet outer flange, the cooling liquid sealing rubber line arranged on the edge of the first polar plate cooling liquid outlet is positioned between the first polar plate cooling liquid outlet inner flange and the first polar plate cooling liquid outlet outer flange, the second polar plate outline sealing rubber line is positioned on the inner side of the second polar plate outer flange, the air sealing rubber line is respectively positioned on the outer sides of the second polar plate air inlet flange and the second polar plate air outlet flange, and the cooling liquid sealing rubber line arranged on the edge of the second polar plate cooling liquid inlet is positioned in the second polar plate cooling liquid inlet And a cooling liquid sealing rubber line arranged at the edge of the cooling liquid outlet of the second pole plate is positioned between the inner flange of the cooling liquid outlet of the second pole plate and the outer flange of the cooling liquid outlet of the second pole plate.
Compared with the prior art, the invention has the following advantages:
1. the sealing is carried out firstly and then the welding is carried out, the sealing rubber line does not cover the welding envelope line, the uneven welding envelope line does not influence the sealing rubber line, the sealing rubber line is in plane contact with the polar plate, and the sealing effect is enhanced;
2. firstly, sealing and then welding are carried out, only the molding of the sealing rubber line at one side of the first polar plate or the second polar plate is considered each time, the injection molding of the sealing rubber line at two sides of the polar plate is not needed to be considered, and the difficulty of a sealing clamp system is reduced because only the clamping of the first polar plate or the second polar plate is considered;
3. the sealing and welding are carried out firstly, the influence of welding on the dislocation of the sealing area is not considered, the adjustment of a sealing clamp system is reduced, the working time is saved, and the cost is reduced.
Drawings
FIG. 1 is a schematic structural diagram of a first plate of a metal bipolar plate structure that can be sealed and then welded according to the present invention;
FIG. 2 is a schematic structural view of the sealant line in FIG. 1;
FIG. 3 is a schematic structural diagram of a second plate of a metal bipolar plate structure that can be sealed and then welded according to the present invention;
FIG. 4 is a schematic structural view of the sealant line in FIG. 3;
FIG. 5 is a schematic diagram of the weld envelope of FIG. 3;
fig. 6 is an enlarged schematic view of the air inlet portion of fig. 3.
The components in the figures are numbered as follows:
a first plate 1, a second plate 2, a welding envelope 3, a coolant sealing glue line 4, a first plate air inlet 11, a first plate coolant inlet 12, a first plate hydrogen inlet 13, a first plate air outlet 14, a first plate coolant outlet 15, a first plate hydrogen outlet 16, a first plate active region 17, a first plate inlet transition region 18, a first plate outlet transition region 19, a second plate air inlet 21, a second plate coolant inlet 22, a second plate hydrogen inlet 23, a second plate air outlet 24, a second plate coolant outlet 25, a second plate hydrogen outlet 26, a second plate active region 27, a second plate inlet transition region 28, a second plate outlet transition region 29, a first plate contour sealing glue line 101, a hydrogen sealant line 102, a first plate coolant inlet inner flange 121, a first plate coolant inlet outer flange 122, a first plate coolant outlet outer flange 122, a welding envelope 3, a first plate coolant inlet 11, a first plate coolant inlet 12, a first plate coolant inlet 13, a first plate coolant outlet 14, a second plate coolant outlet 21, a second plate, A first pole plate hydrogen inlet flange 131, a first pole plate cooling liquid outlet inner flange 151, a first pole plate cooling liquid outlet outer flange 152, a first pole plate hydrogen outlet flange 161, a second pole plate contour sealing glue line 201, an air sealing glue line 202, a second pole plate air inlet flange 211, a second pole plate cooling liquid inlet inner flange 221, a second pole plate cooling liquid inlet outer flange 222, a second pole plate air outlet flange 241, a second pole plate cooling liquid outlet inner flange 251, a second pole plate cooling liquid outlet outer flange 252, a first pole plate outer flange 1001, and a second pole plate outer flange 2001.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1, 2, 3, 4, 5 and 6, a metal bipolar plate structure of the present invention 1, which can be sealed first and then welded, includes a first plate 1 and a second plate 2, which are symmetrical to each other, a first surface of the first plate 1 is set as an air flow channel reaction region, a first surface of the second plate 2 is set as a hydrogen flow channel reaction region, and a cooling liquid flow channel is formed between a second surface of the first plate 1 and a second surface of the second plate 2 by welding an envelope 3;
the first polar plate 1 is provided with a first polar plate air inlet 11, a first polar plate cooling liquid inlet 12 and a first polar plate hydrogen inlet 13, and the first polar plate 1 is also provided with a first polar plate air outlet 14, a first polar plate cooling liquid outlet 15 and a first polar plate hydrogen outlet 16;
the second polar plate 2 is provided with a second polar plate air inlet 21, a second polar plate cooling liquid inlet 22 and a second polar plate hydrogen inlet 23, and the second polar plate 2 is also provided with a second polar plate air outlet 24, a second polar plate cooling liquid outlet 25 and a second polar plate hydrogen outlet 26;
the first pole plate cooling liquid inlet 12, the first pole plate cooling liquid outlet 15, the second pole plate cooling liquid inlet 22 and the second pole plate cooling liquid outlet 25 are all located within the welding envelope 3, and the first pole plate air inlet 11, the first pole plate hydrogen inlet 13, the first pole plate air outlet 14, the first pole plate hydrogen outlet 16, the second pole plate air inlet 21, the second pole plate hydrogen inlet 23, the second pole plate air outlet 24 and the second pole plate hydrogen outlet 26 are all located outside the welding envelope 3;
a first polar plate outline sealing glue line 101 which is wound around the edge of the first polar plate 1 in a circle is arranged on the first surface of the first polar plate 1, closed hydrogen sealing glue lines 102 are respectively arranged on the edges of a first polar plate hydrogen inlet 13 and a first polar plate hydrogen outlet 16 on the first surface of the first polar plate 1, and closed cooling liquid sealing glue lines 4 are respectively arranged on the edges of a first polar plate cooling liquid inlet 12 and a first polar plate cooling liquid outlet 15 on the first surface of the first polar plate 1;
a second polar plate outline sealing rubber line 201 which is wound around the edge of the second polar plate 2 in a circle is arranged on the first surface of the second polar plate 2, closed air sealing rubber lines 202 are respectively arranged on the edges of a second polar plate air inlet 21 and a second polar plate air outlet 24 on the first surface of the second polar plate 2, and closed cooling liquid sealing rubber lines 4 are respectively arranged on the edges of a second polar plate cooling liquid inlet 22 and a second polar plate cooling liquid outlet 25 on the first surface of the second polar plate 2;
the hydrogen gas sealant line 102, the air sealant line 202 and the coolant sealant line 4 are not crossed with the welding envelope 3.
In addition, a first pole plate outer flange 1001 which surrounds the edge of the first pole plate 1 in a circle is arranged on the first surface of the first pole plate 1, a first pole plate outline sealing glue line 101 is positioned on the inner side of the first pole plate outer flange 1001, a first pole plate hydrogen inlet flange 131 is arranged on the edge of a first pole plate hydrogen inlet 13 on the first surface of the first pole plate 1, a first pole plate hydrogen outlet flange 161 is arranged on the edge of a first pole plate hydrogen outlet 16, a hydrogen sealing glue line 102 is respectively positioned on the outer sides of the first pole plate hydrogen inlet flange 131 and the first pole plate hydrogen outlet flange 161, a first pole plate cooling liquid inlet inner flange 121 and a first pole plate cooling liquid inlet outer flange 122 are arranged on the edge of a first pole plate cooling liquid inlet 12 on the first surface of the first pole plate 1, the first pole plate cooling liquid inlet inner flange 121 is positioned inside the first pole plate cooling liquid inlet outer flange 122, and a cooling liquid sealing glue line 4 arranged on the edge of the first pole plate cooling liquid inlet 12 is positioned on the edge of the first pole Between 121 and the first plate cooling liquid inlet outer flange 122, the edge of the first plate cooling liquid outlet 15 on the first surface of the first plate 1 is provided with a first plate cooling liquid outlet inner flange 151 and a first plate cooling liquid outlet outer flange 152, the first plate cooling liquid outlet inner flange 151 is located inside the first plate cooling liquid outlet outer flange 152, and the cooling liquid sealing rubber wire 4 arranged on the edge of the first plate cooling liquid outlet 15 is located between the first plate cooling liquid outlet inner flange 151 and the first plate cooling liquid outlet outer flange 152.
Similarly, a second polar plate outer flange 2001 which is wound around the edge of the second polar plate 1 is arranged on the first surface of the second polar plate 2, a second polar plate outline sealing glue line 201 is arranged on the inner side of the second polar plate outer flange 2001, a second polar plate air inlet flange 211 is arranged on the first surface of the second polar plate 2 and is positioned on the edge of a second polar plate air inlet 21, a second polar plate air outlet flange 241 is arranged on the edge of a second polar plate air outlet 24, air sealing glue lines 202 are respectively arranged on the outer sides of the second polar plate air inlet flange 211 and the second polar plate air outlet flange 241, a second polar plate cooling liquid inlet inner flange 221 and a second polar plate cooling liquid inlet outer flange 222 are arranged on the edge of a second polar plate cooling liquid inlet 22 on the first surface of the second polar plate 2, the second polar plate cooling liquid inlet inner flange 221 is arranged inside the second polar plate cooling liquid inlet outer flange 222, and a cooling liquid sealing glue line 4 arranged on the edge of the second polar plate cooling liquid inlet 22 is arranged on the inner flange Between the flange 221 and the second pole plate cooling liquid inlet outer flange 222, a second pole plate cooling liquid outlet inner flange 251 and a second pole plate cooling liquid outlet outer flange 252 are arranged on the edge of the second pole plate cooling liquid outlet 25 on the first surface of the second pole plate 2, the second pole plate cooling liquid outlet inner flange 251 is arranged inside the second pole plate cooling liquid outlet outer flange 252, and a cooling liquid sealing glue line 4 arranged on the edge of the second pole plate cooling liquid outlet 25 is arranged between the second pole plate cooling liquid outlet inner flange 251 and the second pole plate cooling liquid outlet outer flange 252.
In this embodiment, the first surface of the first electrode plate 1 is provided with a first electrode plate active region 17, and the first electrode plate active region 17 is communicated with the first electrode plate air inlet 11 through a first electrode plate inlet transition region 18 and communicated with the first electrode plate air outlet 14 through a first electrode plate outlet transition region 19; the first side of the second plate 2 is provided with a second plate active region 27, the second plate active region 27 being in communication with the second plate hydrogen inlet 23 via a second plate inlet transition region 28 and in communication with the second plate hydrogen outlet 26 via a second plate outlet transition region 29.
In addition, in the present embodiment, the first plate air inlet 11, the first plate coolant inlet 12, and the first plate hydrogen inlet 13 are located at one end of the first plate 1, and the first plate air outlet 14, the first plate coolant outlet 15, and the first plate hydrogen outlet 16 are located at the other end of one end of the first plate 1; a second plate air inlet 21, a second plate coolant inlet 22 and a second plate hydrogen inlet 23 are located at one end of the second plate 2 and a second plate air outlet 24, a second plate coolant outlet 25 and a second plate hydrogen outlet 26 are located at the other end of the second plate 2. The first plate coolant inlet 12 is located between the first plate air inlet 11 and the first plate hydrogen inlet 13, the first plate coolant outlet 15 is located between the first plate air outlet 14 and the first plate hydrogen outlet 16, the second plate coolant inlet 22 is located between the second plate air inlet 21 and the second plate hydrogen inlet 23, and the second plate coolant outlet 25 is located between the second plate air outlet 24 and the second plate hydrogen outlet 26. The first plate air inlet 11 and the first plate air outlet 14 are located at opposite corners of the first plate 1, the first plate hydrogen inlet 13 and the first plate hydrogen outlet 16 are located at opposite corners of the first plate 1, the second plate air inlet 21 and the second plate air outlet 24 are located at opposite corners of the second plate 2, and the second plate hydrogen inlet 23 and the second plate hydrogen outlet 26 are located at opposite corners of the second plate 2.
When the metal bipolar plate structure which can be sealed and welded firstly is assembled, the method comprises the following steps:
A) laying a sealing glue line: laying a first polar plate outline sealing rubber line 101 on the edge of the first surface of the first polar plate 1, laying a hydrogen sealing rubber line 102 on the edges of a first polar plate hydrogen inlet 13 and a first polar plate hydrogen outlet 16, and laying a cooling liquid sealing rubber line 4 on the edges of a first polar plate cooling liquid inlet 12 and a first polar plate cooling liquid outlet 15; laying a second plate contour sealing glue line 201 on the edge of the first surface of the second plate 2, laying an air sealing glue line 202 on the edges of the second plate air inlet 21 and the second plate air outlet 24, and laying a cooling liquid sealing glue line 4 on the edges of the second plate cooling liquid inlet 22 and the second plate cooling liquid outlet 25;
B) and (3) attaching the second surface of the first polar plate 1 to the second surface of the second polar plate 2, positioning, welding along the welding envelope line 3, and welding and connecting the first polar plate 1 and the second polar plate 2.
In addition, in step a), when the sealing glue line is laid, the first plate contour sealing glue line 101 is located inside the first plate outer flange 1001, the hydrogen sealing glue line 102 is located outside the first plate hydrogen inlet flange 131 and the first plate hydrogen outlet flange 161, the cooling liquid sealing glue line 4 arranged at the edge of the first plate cooling liquid inlet 12 is located between the first plate cooling liquid inlet inner flange 121 and the first plate cooling liquid inlet outer flange 122, the cooling liquid sealing glue line 4 arranged at the edge of the first plate cooling liquid outlet 15 is located between the first plate cooling liquid outlet inner flange 151 and the first plate cooling liquid outlet outer flange 152, the second plate contour sealing glue line 201 is located inside the second plate outer flange 2001, the air sealing glue lines 202 are located outside the second plate air inlet flange 211 and the second plate air outlet flange 241, the cooling liquid sealing glue line 4 arranged at the edge of the second plate cooling liquid inlet 22 is located inside the second plate cooling liquid inlet 2001 The coolant sealing glue line 4 arranged at the edge of the second pole plate coolant outlet 25 is positioned between the inner flange 221 and the second pole plate coolant inlet outer flange 222 and between the second pole plate coolant outlet inner flange 251 and the second pole plate coolant outlet outer flange 252.
In the embodiment, the first polar plate 1 and the second polar plate 2 are respectively stamped by using 316L stainless steel with the thickness of 0.1mm, the distance between the highest surface of the polar plate flange and the polar plate arrangement seal glue line surface is 0.3mm, and the distance between the adjacent flanges, namely the groove width is 8 mm. The sealing glue line is made of EPDM materials, the width is 5mm, the sealing glue line is 0.2mm higher than the highest surface of the polar plate by using an injection molding method, and the total height of the sealing glue line is 0.5 mm. In addition, the distance from the first pole plate outer flange 1001 to the first pole plate contour sealing glue line 101 is 0.5mm, and the distance from the second pole plate outer flange 2001 to the second pole plate contour sealing glue line 201 is 0.5 mm.
When the plate is used in the embodiment, the first plate contour sealing glue line 101 seals the first surface of the first plate 1 integrally, the hydrogen sealing glue line 102 seals the first plate hydrogen inlet 13 and the first plate hydrogen outlet 16, the coolant sealing glue line 4 seals the first plate coolant inlet 12 and the first plate coolant outlet 15, the second plate contour sealing glue line 201 seals the first surface of the second plate 2 integrally, the air sealing glue line 202 seals the second plate air inlet 21 and the second plate air outlet 24, the coolant sealing glue line 4 seals the second plate coolant inlet 22 and the second plate coolant outlet 25, so as to ensure the sealing of the first surface air flow channel of the first plate 1 and the first surface hydrogen flow channel of the second plate 2, meanwhile, the second surface of the first polar plate 1 and the second surface of the second polar plate 2 are welded to form a cooling liquid flow channel, and the cooling liquid cannot flow into air and hydrogen.
According to the metal bipolar plate structure capable of being sealed and welded firstly and the assembly method thereof, sealing is carried out firstly and then welding is carried out, the sealing rubber wire does not cover the welding envelope line 3, the uneven welding envelope line 3 does not influence the sealing rubber wire, the sealing rubber wire is in plane contact with the polar plate, and the sealing effect is enhanced; the molding of the single-side sealing rubber line of the first polar plate or the second polar plate is only considered each time, the injection molding sealing rubber line at the two sides of the polar plate is not required to be considered, and the difficulty of a sealing clamp system is reduced because only the clamping of the first polar plate or the second polar plate is considered; the influence of welding on the dislocation of the sealing area is not considered, the adjustment of a sealing clamp system is reduced, the working time is saved, and the cost is reduced.
Claims (9)
1. A metal bipolar plate structure capable of being sealed firstly and then welded comprises a first polar plate (1) and a second polar plate (2) which are symmetrical to each other, wherein a first surface of the first polar plate (1) is set as an air flow channel reaction region, a first surface of the second polar plate (2) is set as a hydrogen flow channel reaction region, and a cooling liquid flow channel is formed between a second surface of the first polar plate (1) and a second surface of the second polar plate (2) through welding an envelope curve (3);
the method is characterized in that: the first polar plate (1) is provided with a first polar plate air inlet (11), a first polar plate cooling liquid inlet (12) and a first polar plate hydrogen inlet (13), and the first polar plate (1) is also provided with a first polar plate air outlet (14), a first polar plate cooling liquid outlet (15) and a first polar plate hydrogen outlet (16);
the second polar plate (2) is provided with a second polar plate air inlet (21), a second polar plate cooling liquid inlet (22) and a second polar plate hydrogen inlet (23), and the second polar plate (2) is also provided with a second polar plate air outlet (24), a second polar plate cooling liquid outlet (25) and a second polar plate hydrogen outlet (26);
the first pole plate cooling liquid inlet (12), the first pole plate cooling liquid outlet (15), the second pole plate cooling liquid inlet (22) and the second pole plate cooling liquid outlet (25) are all located inside the welding envelope line (3), and the first pole plate air inlet (11), the first pole plate hydrogen inlet (13), the first pole plate air outlet (14), the first pole plate hydrogen outlet (16), the second pole plate air inlet (21), the second pole plate hydrogen inlet (23), the second pole plate air outlet (24) and the second pole plate hydrogen outlet (26) are all located outside the welding envelope line (3);
a first polar plate outline sealing rubber line (101) which is wound around the edge of the first polar plate (1) by a circle is arranged on the first surface of the first polar plate (1), a closed hydrogen-gas sealing rubber line (102) is respectively arranged on the first surface of the first polar plate (1) at the edges of the first polar plate hydrogen inlet (13) and the first polar plate hydrogen outlet (16), and a closed cooling liquid sealing rubber line (4) is respectively arranged on the first surface of the first polar plate (1) at the edges of the first polar plate cooling liquid inlet (12) and the first polar plate cooling liquid outlet (15);
a second polar plate outline sealing glue line (201) which surrounds the edge of the second polar plate (2) in a circle is arranged on the first surface of the second polar plate (2), closed air sealing glue lines (202) are respectively arranged on the edges of the second polar plate air inlet (21) and the second polar plate air outlet (24) on the first surface of the second polar plate (2), and closed cooling liquid sealing glue lines (4) are respectively arranged on the edges of the second polar plate cooling liquid inlet (22) and the second polar plate cooling liquid outlet (25) on the first surface of the second polar plate (2);
the hydrogen gas sealing glue line (102), the air sealing glue line (202) and the cooling liquid sealing glue line (4) are not crossed with the welding envelope line (3).
2. The sealable weldable metal bipolar plate structure of claim 1, wherein: a first polar plate outer flange (1001) which surrounds the edge of the first polar plate (1) in a circle is arranged on the first surface of the first polar plate (1), a first polar plate contour sealing rubber line (101) is positioned on the inner side of the first polar plate outer flange (1001), a first polar plate hydrogen inlet flange (131) is arranged on the edge of the first polar plate hydrogen inlet (13) on the first surface of the first polar plate (1), a first polar plate hydrogen outlet flange (161) is arranged on the edge of the first polar plate hydrogen outlet (16), a hydrogen sealing rubber line (102) is respectively positioned on the outer sides of the first polar plate hydrogen inlet flange (131) and the first polar plate hydrogen outlet flange (161), a first polar plate cooling liquid inlet inner flange (121) and a first polar plate cooling liquid inlet outer flange (122) are arranged on the edge of the first surface of the first polar plate (1) which is positioned on the first polar plate cooling liquid inlet (12), the first pole plate cooling liquid inlet inner flange (121) is positioned inside the first pole plate cooling liquid inlet outer flange (122), the cooling liquid sealing rubber line (4) arranged at the edge of the first pole plate cooling liquid inlet (12) is positioned between the first pole plate cooling liquid inlet inner flange (121) and the first pole plate cooling liquid inlet outer flange (122), a first pole plate cooling liquid outlet inner flange (151) and a first pole plate cooling liquid outlet outer flange (152) are arranged on the edge of the first pole plate cooling liquid outlet (15) on the first surface of the first pole plate (1), the first pole plate cooling liquid outlet inner flange (151) is positioned inside the first pole plate cooling liquid outlet outer flange (152), and the cooling liquid sealing rubber line (4) arranged at the edge of the first pole plate cooling liquid outlet (15) is positioned between the first pole plate cooling liquid outlet inner flange (151) and the first pole plate cooling liquid outlet outer flange (152).
3. The sealable weldable metal bipolar plate structure of claim 1, wherein: a second pole plate outer flange (2001) which surrounds the edge of the second pole plate (1) in a circle is arranged on the first surface of the second pole plate (2), a second pole plate contour sealing glue line (201) is positioned on the inner side of the second pole plate outer flange (2001), a second pole plate air inlet flange (211) is arranged on the edge of the second pole plate air inlet (21) on the first surface of the second pole plate (2), a second pole plate air outlet flange (241) is arranged on the edge of the second pole plate air outlet (24), air sealing glue lines (202) are respectively positioned on the outer sides of the second pole plate air inlet flange (211) and the second pole plate air outlet flange (241), a second pole plate cooling liquid inlet inner flange (221) and a second pole plate cooling liquid inlet outer flange (222) are arranged on the edge of the second pole plate cooling liquid inlet (22) on the first surface of the second pole plate (2), the second plate cooling liquid inlet inner flange (221) is positioned inside the second plate cooling liquid inlet outer flange (222), the cooling liquid sealing rubber line (4) arranged at the edge of the second pole plate cooling liquid inlet (22) is positioned between the second pole plate cooling liquid inlet inner flange (221) and the second pole plate cooling liquid inlet outer flange (222), a second pole plate cooling liquid outlet inner flange (251) and a second pole plate cooling liquid outlet outer flange (252) are arranged on the edge of the second pole plate cooling liquid outlet (25) on the first surface of the second pole plate (2), the second pole plate cooling liquid outlet inner flange (251) is positioned inside the second pole plate cooling liquid outlet outer flange (252), and a cooling liquid sealing glue line (4) arranged at the edge of the second pole plate cooling liquid outlet (25) is positioned between the second pole plate cooling liquid outlet inner flange (251) and the second pole plate cooling liquid outlet outer flange (252).
4. The sealable weldable metal bipolar plate structure of claim 1, wherein: a first pole plate active area (17) is arranged on the first surface of the first pole plate (1), and the first pole plate active area (17) is communicated with the first pole plate air inlet (11) through a first pole plate inlet transition area (18) and is communicated with the first pole plate air outlet (14) through a first pole plate outlet transition area (19); the first face of second polar plate (2) is equipped with second polar plate active region (27), second polar plate active region (27) through second polar plate import transition zone (28) with second polar plate hydrogen import (23) intercommunication, through second polar plate export transition zone (29) with second polar plate hydrogen export (26) intercommunication.
5. The sealable weldable metal bipolar plate structure of claim 1, wherein: the first polar plate air inlet (11), the first polar plate cooling liquid inlet (12) and the first polar plate hydrogen inlet (13) are positioned at one end of the first polar plate (1), and the first polar plate air outlet (14), the first polar plate cooling liquid outlet (15) and the first polar plate hydrogen outlet (16) are positioned at the other end of one end of the first polar plate (1); the second plate air inlet (21), the second plate coolant inlet (22), and the second plate hydrogen inlet (23) are located at one end of the second plate (2), and the second plate air outlet (24), the second plate coolant outlet (25), and the second plate hydrogen outlet (26) are located at the other end of the second plate (2).
6. The sealable weldable metal bipolar plate structure of claim 5, wherein: first polar plate coolant liquid import (12) is located between first polar plate air intlet (11) and first polar plate hydrogen import (13), first polar plate coolant liquid export (15) is located between first polar plate air export (14) and first polar plate hydrogen export (16), second polar plate coolant liquid import (22) is located between second polar plate air intlet (21) and second polar plate hydrogen import (23), second polar plate coolant liquid export (25) is located between second polar plate air export (24) and second polar plate hydrogen export (26).
7. The sealable weldable metal bipolar plate structure of claim 1, wherein: the first plate air inlet (11) and the first plate air outlet (14) are located at opposite corners of the first plate (1), the first plate hydrogen inlet (13) and the first plate hydrogen outlet (16) are located at opposite corners of the first plate (1), the second plate air inlet (21) and the second plate air outlet (24) are located at opposite corners of the second plate (2), and the second plate hydrogen inlet (23) and the second plate hydrogen outlet (26) are located at opposite corners of the second plate (2).
8. A method of assembling a sealable weldable metal bipolar plate structure according to any one of claims 1 to 7, comprising: the method comprises the following steps:
A) laying a sealing glue line: laying a first polar plate outline sealing rubber line (101) at the edge of the first surface of the first polar plate (1), laying a hydrogen sealing rubber line (102) at the edges of a first polar plate hydrogen inlet (13) and a first polar plate hydrogen outlet (16), and laying a cooling liquid sealing rubber line (4) at the edges of a first polar plate cooling liquid inlet (12) and a first polar plate cooling liquid outlet (15); laying a second polar plate outline sealing glue line (201) on the edge of the first surface of the second polar plate (2), laying an air sealing glue line (202) on the edges of a second polar plate air inlet (21) and a second polar plate air outlet (24), and laying a cooling liquid sealing glue line (4) on the edges of a second polar plate cooling liquid inlet (22) and a second polar plate cooling liquid outlet (25);
B) and (3) attaching the second surface of the first polar plate (1) to the second surface of the second polar plate (2), positioning, welding along the welding envelope line (3), and welding and connecting the first polar plate (1) and the second polar plate (2).
9. The method of assembling a sealable weldable metal bipolar plate structure of claim 8, wherein: the first pole plate cooling liquid cooling structure is characterized in that a first pole plate outer flange (1001) which winds the edge of the first pole plate (1) in a circle is arranged on the first surface of the first pole plate (1), a first pole plate hydrogen inlet flange (131) is arranged on the edge of a first pole plate hydrogen inlet (13) on the first surface of the first pole plate (1), a first pole plate hydrogen outlet flange (161) is arranged on the edge of a first pole plate hydrogen outlet (16), a first pole plate cooling liquid inlet inner flange (121) and a first pole plate cooling liquid inlet outer flange (122) are arranged on the edge of a first pole plate cooling liquid inlet (12) on the first surface of the first pole plate (1), the first pole plate cooling liquid inlet inner flange (121) is arranged inside the first pole plate cooling liquid inlet outer flange (122), and a first pole plate cooling liquid outlet inner flange (151) and a first pole plate cooling liquid outlet flange (15) are arranged on the edge of the first surface of the first pole plate (1) The first pole plate cooling liquid outlet inner flange (151) is located inside the first pole plate cooling liquid outlet outer flange (152), a second pole plate outer flange (2001) which surrounds the edge of the second pole plate (1) in a circle is arranged on the first surface of the second pole plate (2), a second pole plate air inlet flange (211) is arranged on the first surface of the second pole plate (2) and located at the edge of the second pole plate air inlet (21), a second pole plate air outlet flange (241) is arranged on the edge of the second pole plate air outlet (24), a second pole plate cooling liquid inlet inner flange (221) and a second pole plate cooling liquid inlet outer flange (222) are arranged on the first surface of the second pole plate (2) and located at the edge of the second pole plate cooling liquid inlet (22), and the second pole plate cooling liquid inlet inner flange (221) is located inside the second pole plate cooling liquid inlet outer flange (222), a second pole plate cooling liquid outlet inner flange (251) and a second pole plate cooling liquid outlet outer flange (252) are arranged on the edge of the second pole plate cooling liquid outlet (25) on the first surface of the second pole plate (2), the second pole plate cooling liquid outlet inner flange (251) is arranged inside the second pole plate cooling liquid outlet outer flange (252), when a sealing rubber line is laid, a first pole plate contour sealing rubber line (101) is arranged on the inner side of the first outer flange (161), a hydrogen sealing rubber line (1001) is respectively arranged on the outer sides of the first pole plate hydrogen inlet flange (131) and the first pole plate hydrogen outlet flange (161), a cooling liquid sealing rubber line (4) arranged on the edge of the first pole plate cooling liquid inlet (12) is arranged between the first pole plate cooling liquid inlet inner flange (121) and the first pole plate cooling liquid inlet (122), the cooling liquid sealing rubber line (4) arranged at the edge of the first pole plate cooling liquid outlet (15) is positioned between the first pole plate cooling liquid outlet inner flange (151) and the first pole plate cooling liquid outlet outer flange (152), the second pole plate contour sealant line (201) is located inside the second pole plate outer flange (2001), the air sealing glue lines (202) are respectively positioned at the outer sides of the second plate air inlet flange (211) and the second plate air outlet flange (241), the cooling liquid sealing rubber line (4) arranged at the edge of the second pole plate cooling liquid inlet (22) is positioned between the second pole plate cooling liquid inlet inner flange (221) and the second pole plate cooling liquid inlet outer flange (222), and a cooling liquid sealing glue line (4) arranged at the edge of the second pole plate cooling liquid outlet (25) is positioned between the second pole plate cooling liquid outlet inner flange (251) and the second pole plate cooling liquid outlet outer flange (252).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110219056.6A CN113013436A (en) | 2021-02-26 | 2021-02-26 | Metal bipolar plate structure capable of being sealed firstly and then welded and assembling method thereof |
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| CN202110219056.6A CN113013436A (en) | 2021-02-26 | 2021-02-26 | Metal bipolar plate structure capable of being sealed firstly and then welded and assembling method thereof |
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Application publication date: 20210622 |