CN220575023U - Fuel cell metal bipolar plate welding tool - Google Patents
Fuel cell metal bipolar plate welding tool Download PDFInfo
- Publication number
- CN220575023U CN220575023U CN202321085133.4U CN202321085133U CN220575023U CN 220575023 U CN220575023 U CN 220575023U CN 202321085133 U CN202321085133 U CN 202321085133U CN 220575023 U CN220575023 U CN 220575023U
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- Prior art keywords
- welding
- plate
- fuel cell
- metal bipolar
- cover plate
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- 238000003466 welding Methods 0.000 title claims abstract description 190
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 114
- 239000002184 metal Substances 0.000 title claims abstract description 114
- 239000000446 fuel Substances 0.000 title claims abstract description 101
- 238000003825 pressing Methods 0.000 claims description 59
- 238000000034 method Methods 0.000 abstract description 4
- 230000035515 penetration Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Classifications
-
- 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
Abstract
The utility model discloses a fuel cell metal bipolar plate welding tool which comprises a bottom plate, a first welding tool and a second welding tool, wherein the bottom plate is arranged at the bottom of a fuel cell metal bipolar plate and is used for fixing the fuel cell metal bipolar plate; the first welding tool is used for welding a first welding area of the metal bipolar plate of the fuel cell; the second welding tool is used for welding a second welding area of the metal bipolar plate of the fuel cell; the first welding area and the second welding area are matched with welding track positions of the fuel cell metal bipolar plate, wherein the first welding area comprises a middle area and a frame of the fuel cell metal bipolar plate; the second weld region includes a fuel cell metal bipolar plate edge region. The utility model is economical and practical and has simple structure. The problems of welding the metal bipolar plate and the bottom plate after welding and arcing and arc welding penetration in the bipolar plate welding process are solved.
Description
Technical Field
The utility model relates to the technical field of hydrogen fuel cells, in particular to a fuel cell metal bipolar plate welding tool.
Background
In the current welding process of the metal bipolar plate, the phenomenon that gaps are generated between the cathode plate and the anode plate easily occurs, so that the anode plate is welded through and the condition of cold joint is caused. After the welding is finished, the phenomenon that the metal bipolar plate and the bottom die are welded together can occur, so that the metal bipolar plate can deform when the metal bipolar plate is removed. The welding phenomenon that the arc starting welding is not stopped and the arc is not received can occur in the welding process of the metal bipolar plate.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present utility model is directed to a welding tool for metal bipolar plates of fuel cells, which is used for solving the problems of heavy metal bipolar plate welding dies in the prior art, and after welding, the problems of cold welding, deformation of the bipolar plates, and arc starting and arc receiving during welding are solved.
The utility model provides the following technical scheme:
the welding fixture for the metal bipolar plate of the fuel cell comprises a bottom plate, a first welding fixture and a second welding fixture, wherein,
the bottom plate is arranged at the bottom of the fuel cell metal bipolar plate and is used for fixing the fuel cell metal bipolar plate;
the first welding tool is used for welding a first welding area of the metal bipolar plate of the fuel cell;
the second welding tool is used for welding a second welding area of the metal bipolar plate of the fuel cell;
the first welding area and the second welding area are matched with welding track positions of the fuel cell metal bipolar plate, wherein the first welding area comprises a middle area and a frame of the fuel cell metal bipolar plate;
the second weld region includes a fuel cell metal bipolar plate edge region.
Further, the first welding fixture comprises a first cover plate and a first pressing plate,
the first cover plate is arranged at the upper part of the fuel cell metal bipolar plate, and the first pressing plate is arranged at the upper part of the first cover plate;
the first pressing plate is fixed with the first cover plate through a high-head knurled screw.
Further, a plurality of first welding points are arranged in the middle of the first cover plate, and the first welding notch is matched with the welding points in the middle area of the metal bipolar plate of the fuel cell;
the first pressing plate is matched with the first cover plate, and a plurality of second welding points are arranged on the first pressing plate;
the second welding point is matched with the first welding point, and the length of the first welding point is shorter than that of the second welding point.
Further, the second welding fixture comprises a second cover plate and a second pressing plate, wherein,
the second cover plate is arranged at the upper part of the fuel cell metal bipolar plate, and the second pressing plate is arranged at the upper part of the second cover plate;
the second pressing plate is fixed with the second cover plate through a high-head knurled screw.
Further, a first welding groove is formed in the edge of the second cover plate, and the first welding groove is matched with welding spots of the edge area of the metal bipolar plate of the fuel cell;
the second pressing plate is matched with the second cover plate, and a second welding groove is formed in the second pressing plate;
the second weld groove is mated with the first weld groove, and the first weld groove is shorter than the second weld groove.
Further, the size of the first cover plate is smaller than that of the second cover plate, the thickness of the first cover plate is the same as that of the second cover plate, and the thickness is set to be 1-3mm.
Further, a boss is arranged on one side of the bottom plate, the boss is matched with the groove depth and the groove width of the fuel cell metal bipolar plate, and the height of the boss is consistent with the groove depth of the corresponding position of the fuel cell metal bipolar plate;
a groove with the width of 0.2-0.3mm is milled in the middle of the boss and is used for preventing the metal bipolar plate and the bottom plate of the fuel cell from being welded together.
Further, the bottom plate is also provided with a bottom plate positioning hole, a fuel cell metal bipolar plate inner positioning hole and a welding mold positioning hole;
the position of the bottom plate positioning hole is consistent with that of the laser welding machine base positioning hole;
the positioning holes in the bipolar plate are consistent with the positioning holes in the fuel cell metal bipolar plate in position, and the positioning holes in the bipolar plate are connected with the positioning holes in the fuel cell metal bipolar plate through positioning columns;
and the welding mold positioning holes are matched with the welding mold positioning holes of the first cover plate, the second cover plate, the first pressing plate and the second pressing plate.
Further, the fuel cell metal bipolar plate, the first pressing plate and the first cover plate are positioned through a welding mold positioning hole; or alternatively, the first and second heat exchangers may be,
the fuel cell metal bipolar plate, or the second pressing plate and the second cover plate are positioned through the positioning holes of the welding mold.
The utility model has the technical effects and advantages that:
the utility model discloses a metal bipolar plate welding tool which is divided into a bottom plate, a first cover plate, a second cover plate, a first pressing plate and a second pressing plate, and is economical, practical and simple in structure.
Through designing the boss on the bottom plate, the slot depth behind the bipolar plate shaping of boss highly is unanimous, mills away 0.2-0.3mm wide groove in boss middle zone, and the purpose of this notch makes can not weld together between metal bipolar plate and the bottom plate that the welding is accomplished, has solved the problem that metal bipolar plate and bottom plate welded after the welding is accomplished.
The length of the notch on the cover plate is shorter than the length of the reserved welding position of the pressing plate, so that laser is struck on the cover plate during arcing and arc receiving, and the problems of arcing and arc receiving welding penetration in the welding process of the bipolar plate are solved.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
FIG. 1 is a schematic diagram of a fuel cell metal bipolar plate welding tool according to the present utility model;
FIG. 2 is a schematic view of a welding structure using a first welding tool according to an embodiment of the present utility model;
FIG. 3 is a schematic view of a welding structure using a second welding tool according to an embodiment of the present utility model;
FIG. 4 is a schematic view of a welded structure of metal bipolar plates of a fuel cell according to an embodiment of the present utility model;
fig. 5 is a schematic view showing a bottom plate structure of a fuel cell metal bipolar plate welding tool according to an embodiment of the present utility model;
fig. 6 is a schematic diagram of a first cover plate of a fuel cell metal bipolar plate welding tool according to an embodiment of the utility model;
fig. 7 is a schematic view of a first platen structure of a fuel cell metal bipolar plate welding tool according to an embodiment of the present utility model;
fig. 8 is a schematic diagram showing a stacked structure of a first cover plate and a first pressing plate of a fuel cell metal bipolar plate welding tool according to an embodiment of the present utility model;
fig. 9 is an enlarged schematic view of a structure of a fuel cell metal bipolar plate welding tool according to an embodiment of the present utility model after stacking a first welding point and a second welding point;
fig. 10 is a schematic diagram of a second cover plate of a fuel cell metal bipolar plate welding tool according to an embodiment of the utility model;
FIG. 11 is a schematic view of a second platen of a fuel cell metal bipolar plate welding tool according to an embodiment of the present utility model;
fig. 12 is a schematic diagram showing a stacked structure of a second cover plate and a second pressing plate of the fuel cell metal bipolar plate welding tool according to an embodiment of the present utility model;
fig. 13 is an enlarged schematic view of a first welding groove and a second welding groove of a welding tool for metal bipolar plates of fuel cells according to an embodiment of the present utility model;
in the figure, 1. A bottom plate; 2. a fuel cell metal bipolar plate; 3. a first cover plate; 4. a first platen; 5. a second cover plate; 6. a second pressing plate; 7. high-head knurled screw holes; 8. a bottom plate positioning hole; 9. an inner positioning hole; 10. welding a die positioning hole; 11. grooves with a width of 0.2-0.3 mm.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.
Please refer to the accompanying drawings. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are not intended to be critical to the essential characteristics of the utility model, but are intended to fall within the spirit and scope of the utility model. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the utility model, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the utility model may be practiced.
As shown in fig. 1, the present utility model provides a fuel cell metal bipolar plate welding fixture, comprising a base plate 1, a first welding fixture and a second welding fixture, wherein,
the bottom plate 1 is arranged at the bottom of the fuel cell metal bipolar plate 2 and is used for fixing the fuel cell metal bipolar plate 2;
the first welding tool is used for welding a first welding area of the fuel cell metal bipolar plate 2;
the second welding tool is used for welding a second welding area of the fuel cell metal bipolar plate 2;
the first welding area and the second welding area are matched with welding track positions of the fuel cell metal bipolar plate 2, wherein the first welding area comprises a middle area and a frame of the fuel cell metal bipolar plate 2; the second weld zone comprises the fuel cell metal bipolar plate 2 edge area.
In a specific embodiment of the present utility model, the welding fixture of the present utility model is placed in the following order: the bottom plate 1 is fixed with a welding platform of a laser welding machine by using a positioning pin according to the position of the bottom plate positioning hole 8; the fuel cell metal bipolar plate 2 is placed on the bottom plate 1, and the bottom plate 1 is provided with an inner positioning hole 9 for positioning with the positioning hole of the fuel cell metal bipolar plate 2, and is fixed by utilizing the inner positioning column of the metal bipolar plate.
When the first welding area is welded, a first welding tool is placed on the fuel cell metal bipolar plate 2 and positioned by utilizing the welding mold positioning hole 10; as shown in fig. 2, the first welding fixture comprises a first cover plate 3 and a first pressing plate 4, wherein the first cover plate 3 is arranged at the upper part of the fuel cell metal bipolar plate 2, and the first pressing plate 4 is arranged at the upper part of the first cover plate 3; the first pressing plate 4 and the first cover plate 3 are fixed through high-head knurled screws. The bottom plate 1, the first pressing plate 4 and the first cover plate 3 are all provided with positioning holes 9, and the fuel cell metal bipolar plate 2 is positioned through positioning columns.
When the second welding area is welded, the first welding fixture placed on the fuel cell metal bipolar plate 2 is taken down, and the second welding fixture is placed on the fuel cell metal bipolar plate 2 and positioned by utilizing the welding mold positioning holes 10. As shown in fig. 3, the second welding fixture includes a second cover plate 5 and a second pressing plate 6, wherein the second cover plate 5 is disposed on the upper portion of the fuel cell metal bipolar plate 2, and the second pressing plate 6 is disposed on the upper portion of the second cover plate 5; the second pressing plate 6 and the second cover plate 5 are fixed through high-head knurled screws. The bottom plate 1, the second pressing plate 6 and the second cover plate 5 are provided with inner positioning holes 9, and the fuel cell metal bipolar plate 2 is positioned by positioning columns.
In one embodiment of the present utility model, fig. 4 is a schematic diagram of a metal bipolar plate of a fuel cell, where the edge of the metal bipolar plate 2 of the fuel cell has 4 internal positioning holes of the metal bipolar plate 2 of the fuel cell, and the middle area is a flow field, and the blocks on two sides are hollowed out, and the blocks are an air port and a cooling port, and total six blocks, wherein the two middle most blocks are cooling ports, and the remaining four are air ports; the welding track of the fuel cell metal bipolar plate 2 comprises a middle area spot welding point, L-shaped welding grooves on two sides and a border of the edge.
The metal bipolar plate 2 of the fuel cell used in the present utility model is welded by two unipolar plates, which are respectively named as a cathode plate and an anode plate. The utility model is that the anode plate is arranged below and the cathode plate is stacked together. The anode plate contacts the bottom plate 1 and the cathode plate contacts the first cover plate 3 or the second cover plate 5. The boss of the base plate 1 is designed according to the anode plate.
In one embodiment of the present utility model, as shown in fig. 5, the base plate 1 is designed primarily for metal bipolar plate welding tracks. A boss (hatched part in the figure) is designed on the base plate 1 according to the groove depth and groove width left by the metal bipolar plate 2 of the fuel cell, and a groove 11 with the width of 0.2-0.3mm is milled in the middle of the boss, so that the bipolar plate cannot be separated from the base plate 1 after welding is prevented. The boss is matched with the groove depth and the groove width on the fuel cell metal bipolar plate 2, and the height of the boss is consistent with the groove depth of the corresponding position of the fuel cell metal bipolar plate 2; the middle of the boss is milled with a groove 11 of 0.2-0.3mm width to prevent the fuel cell metal bipolar plate 2 from being welded to the base plate 1.
In a specific embodiment of the present utility model, referring to fig. 5, 2 base plate positioning holes 8, 4 positioning holes 9 and a welding mold positioning hole 10 are further formed in the base plate 1; the positions of the 2 bottom plate positioning holes 8 are arranged at the edge of the bottom plate 1 in an angle symmetry manner and matched with the positions of the positioning holes of the base station of the laser welding machine; the positions of the 4 positioning holes 9 are consistent with those of the fuel cell metal bipolar plate 2, and the positioning holes 9 in the bipolar plate are connected with the positioning holes of the fuel cell metal bipolar plate 2 through positioning columns; the 2 welding mold positioning holes 10 are matched with the welding mold positioning holes 10 of the first cover plate 3, the second cover plate 5 or the first pressing plate 4 and the second pressing plate 6.
As shown in fig. 6, the first cover plate 3 is used for assisting in welding and welding the middle area and the frame of the fuel cell metal bipolar plate 2; a plurality of first welding points are arranged in the middle of the first cover plate 3, and the first welding points are matched with welding points in the middle area of the fuel cell metal bipolar plate 2.
As shown in fig. 7, the first pressing plate 4 is matched with the first cover plate 3, and a plurality of second welding points are arranged on the first pressing plate 4; as shown in fig. 8 and 9, when the first cover plate 3 and the first pressing plate 4 are stacked together, the second welding point is matched with the first welding point, the length of the first welding point is shorter than that of the second welding point, and meanwhile, a plurality of raised knurled screw holes 7 are correspondingly matched and arranged at the edge and the middle position of the first cover plate 3 and the first pressing plate 4 and are used for fixedly connecting the first cover plate 3 and the first pressing plate 4. Welding mould positioning holes 10 are formed in the first cover plate 3 and the first pressing plate 4, and are positioned through matched positioning columns.
As shown in fig. 10, the second cover plate 5 is used for assisting in welding the edge regions on both sides of the metal bipolar plate; the two side edges of the second cover plate 5 are provided with L-shaped first welding grooves which are matched with the L-shaped welding grooves of the edge area of the fuel cell metal bipolar plate 2.
As shown in fig. 11, the second pressing plate 6 is matched with the second cover plate 5, and a second welding groove is formed in the second pressing plate 6; as shown in fig. 12 and 13, the second welding groove is mated with the first welding groove, and the first welding groove is shorter in length than the second welding point. And a plurality of high-head knurled screw holes 7 are correspondingly matched and arranged at the edges and the middle positions of the second cover plate 5 and the second pressing plate 6 and are used for fixedly connecting the second cover plate 5 and the second pressing plate 6.
In a specific embodiment of the present utility model, the size of the first cover plate 3 is smaller than that of the second cover plate 5, and the thickness of the first cover plate 3 and the thickness of the second cover plate 5 are the same, and the thickness is set to be 1-3mm. The first cover plate 3 and the second cover plate 5 are designed according to the welding track position of the metal bipolar plate, the width of the welding position is 2mm, the thickness of the cover plate is between 1 and 3mm, and the cover plate is mainly used for enabling the cover plate to be fully deformed, so that the fuel cell metal bipolar plate 2 can be fully attached together, and the phenomenon of cold joint cannot occur. If the thickness of the cover plate is larger than 3mm, the cover plate has higher rigidity, so that the fuel cell metal bipolar plates 2 cannot be tightly attached, and a cold joint phenomenon can occur; the thickness of the cover plate is smaller than 1mm, so that the service life of the cover plate can be greatly reduced, and the cover plate with the thickness of 1-3mm is selected.
The first cover plate 3 and the second cover plate 5 are laser welded according to the welding point, but the thickness is ensured to be 1-3mm, because the laser welding machine clamps by means of electromagnetism, so that the cover plates are sufficiently deformed to be in contact with the base plate 1.
The first pressing plate 4 and the second pressing plate 6 are designed according to the first cover plate 3 and the second cover plate 5, the first pressing plate 4, the second pressing plate 6, the first cover plate 3 and the second cover plate 5 are all required to be grooved, but the grooved sizes are different, the first pressing plate 4 is mainly designed with reference to a small plate in the middle of the first cover plate 3, and the main purpose is to avoid the phenomenon of welding through at the positions of arcing and arc receiving.
When the laser welding machine programs the welding line segment, the length of the line segment is longer than the length of the reserved welding position of the cover plate, so that laser is beaten on the cover plate during arc starting and arc receiving, and the arc starting position and the arc receiving position can not be welded through on the metal bipolar plate.
The foregoing embodiments are merely illustrative of the principles of the present utility model and their effectiveness, and are not intended to limit the utility model. It should be understood that those skilled in the art may still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features, and any modification, equivalent substitution, improvement, etc. that are within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (5)
1. A welding fixture for a metal bipolar plate of a fuel cell is characterized by comprising a bottom plate (1), a first welding fixture and a second welding fixture, wherein,
the bottom plate (1) is arranged at the bottom of the fuel cell metal bipolar plate (2) and is used for fixing the fuel cell metal bipolar plate (2);
the first welding tool is used for welding a first welding area of the fuel cell metal bipolar plate (2);
the second welding tool is used for welding a second welding area of the fuel cell metal bipolar plate (2);
the first welding area and the second welding area are matched with welding track positions of the fuel cell metal bipolar plate (2), wherein the first welding area comprises a middle area and a frame of the fuel cell metal bipolar plate;
the second welding area comprises an edge area of a fuel cell metal bipolar plate (2);
the first welding fixture comprises a first cover plate (3) and a first pressing plate (4), wherein,
the first cover plate (3) is arranged at the upper part of the fuel cell metal bipolar plate (2), and the first pressing plate (4) is arranged at the upper part of the first cover plate (3);
a plurality of first welding points are arranged in the middle of the first cover plate (3), and the first welding points are matched with welding points in the middle area of the fuel cell metal bipolar plate (2);
the first pressing plate (4) is matched with the first cover plate (3), and a plurality of second welding points are arranged on the first pressing plate (4);
the second welding point is matched with the first welding point, and the length of the first welding point is shorter than that of the second welding point;
the second welding fixture comprises a second cover plate (5) and a second pressing plate (6), wherein,
the second cover plate (5) is arranged at the upper part of the fuel cell metal bipolar plate (2), and the second pressing plate (6) is arranged at the upper part of the second cover plate (5);
the size of the first cover plate (3) is smaller than that of the second cover plate (5), the thickness of the first cover plate (3) is the same as that of the second cover plate (5), and the thickness is set to be 1-3mm;
the edge of the second cover plate (5) is provided with a first welding groove which is matched with a welding spot of the edge area of the fuel cell metal bipolar plate (2);
the second pressing plate (6) is matched with the second cover plate (5), and a second welding groove is formed in the second pressing plate (6);
the second welding groove is matched with the first welding groove, and the length of the first welding groove is shorter than that of the second welding groove;
a boss is arranged on one side of the bottom plate (1), the boss is matched with the groove depth and the groove width of the fuel cell metal bipolar plate (2), and the height of the boss is consistent with the groove depth of the corresponding position of the fuel cell metal bipolar plate (2);
a groove (11) with the width of 0.2-0.3mm is milled in the middle of the boss and is used for preventing the fuel cell metal bipolar plate (2) from being welded with the bottom plate (1).
2. The welding fixture for the metal bipolar plates of the fuel cells according to claim 1, wherein,
the first pressing plate (4) and the first cover plate (3) are fixed through high-head knurled screws.
3. A fuel cell metal bipolar plate welding tooling according to claim 1 or 2, wherein,
the second pressing plate (6) and the second cover plate (5) are fixed through high-head knurled screws.
4. The welding fixture for the metal bipolar plates of the fuel cells according to claim 1, wherein,
the base plate (1) is also provided with a base plate positioning hole (8), a bipolar plate inner positioning hole (9) and a welding die positioning hole (10);
the position of the bottom plate positioning hole (8) is consistent with the position of the positioning hole of the base station of the laser welding machine;
the bipolar plate inner positioning holes (9) are consistent with the inner positioning holes of the fuel cell metal bipolar plate (2), and the bipolar plate inner positioning holes (9) are connected with the inner positioning holes of the fuel cell metal bipolar plate (2) through positioning columns;
the welding mold positioning holes (10) are matched with the welding mold positioning holes (10) of the first cover plate (3), the second cover plate (5), the first pressing plate (4) and the second pressing plate (6).
5. The welding fixture for metal bipolar plates of fuel cells according to claim 4, wherein,
the fuel cell metal bipolar plate (2), the first pressing plate (4) and the first cover plate (3) are positioned through a welding mold positioning hole (10); or alternatively, the first and second heat exchangers may be,
the fuel cell metal bipolar plate (2), the second pressing plate (6) and the second cover plate (5) are positioned through the welding mold positioning holes (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321085133.4U CN220575023U (en) | 2023-05-08 | 2023-05-08 | Fuel cell metal bipolar plate welding tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321085133.4U CN220575023U (en) | 2023-05-08 | 2023-05-08 | Fuel cell metal bipolar plate welding tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220575023U true CN220575023U (en) | 2024-03-12 |
Family
ID=90115625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321085133.4U Active CN220575023U (en) | 2023-05-08 | 2023-05-08 | Fuel cell metal bipolar plate welding tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220575023U (en) |
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2023
- 2023-05-08 CN CN202321085133.4U patent/CN220575023U/en active Active
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