CN210834017U - Metal bipolar plate weld joint sealing test fixture - Google Patents
Metal bipolar plate weld joint sealing test fixture Download PDFInfo
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- CN210834017U CN210834017U CN201921683602.6U CN201921683602U CN210834017U CN 210834017 U CN210834017 U CN 210834017U CN 201921683602 U CN201921683602 U CN 201921683602U CN 210834017 U CN210834017 U CN 210834017U
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Abstract
The utility model provides a metal bipolar plate welding seam sealing test fixture, including cope match-plate pattern and the lower bolster that cooperate to use, the relative surface of cope match-plate pattern and lower bolster is planar structure, according to the plane simulation mode of product assembly atress, simple structure, has reduced the processing degree of difficulty of mould and can prevent that the slot height in the existing design from taking place the variation and influencing the test result; the first sealing groove and the second sealing groove are correspondingly formed in the upper template and the lower template, the 3D sealing ring with certain elastic compression amount is placed in the second sealing groove, the 3D sealing ring is higher than the plane of the lower template, the cooling channel of the bipolar plate to be tested can be sealed, the mounting mode is simple, and the maintenance is convenient.
Description
Technical Field
The utility model relates to a fuel cell field especially relates to metal bipolar plate welding seam sealing test fixture.
Background
Fuel cells typically include a membrane electrode assembly and bipolar plates, where the bipolar plates serve primarily to support the fuel cell, conduct electrical current, distribute fuel gas, dissipate heat from reactions, and the like. The bipolar plate made of metal material is formed by jointing an anode plate at a hydrogen side and a cathode plate at an air side, a cooling liquid flowing channel is formed between the anode plate and the cathode plate, and the joint edge of the anode plate and the cathode plate is welded to realize the sealing of the cooling liquid flowing channel between the anode plate and the cathode plate. The welded bipolar plate needs to be subjected to a corresponding testing process to judge whether the welding is qualified or not so as to ensure that the welding of the bipolar plate is free from defects and leakage is not generated.
The upper and lower templates of the existing test fixture are profiled, the processing difficulty is high, the sealing ring adopts a glue dispensing or bonding mode, the sealing durability and accuracy are reduced, and the maintenance cost is high.
Disclosure of Invention
In order to solve the problem, the utility model provides a metal bipolar plate welding seam seals test fixture.
The main contents of the utility model include:
the metal bipolar plate welding seam sealing test fixture comprises an upper template and a lower template, wherein the lower surface of the upper template and the upper surface of the lower template are both of a planar structure, the lower surface of the upper template comprises a first placing area and a first positioning area, and the first positioning area surrounds the first placing area; the upper surface of the lower template correspondingly comprises a second placing area and a second positioning area, and the second positioning area surrounds the second placing area; the first placing area and the second placing area are matched with the appearance of the bipolar plate to be tested; two ends of the first placing area are provided with first sealing grooves, two ends of the second placing area are correspondingly provided with second sealing grooves, and elastic 3D sealing rings are placed in the second sealing grooves; the 3D sealing ring is matched with the opening of the cooling channel of the bipolar plate to be tested; a plurality of limiting columns are further arranged in the second placing area; in the die opening state, the upper end face of the 3D sealing ring is higher than the plane of the lower template and higher than the upper end face of the limiting column; an air inlet channel is formed in the bottom of the first sealing groove and is communicated with external compressed air.
Preferably, the bottom of first seal groove is equipped with first sealed piece to the epirelief, the bottom of second seal groove is equipped with the sealed piece of second to the epirelief, the 3D sealing washer embedding the second sealed piece with in the gap between the lateral wall of second seal groove, inlet channel sets up on the first sealed piece.
Preferably, the air inlet channel comprises an air inlet and a channel body, the air inlet is formed in one side face of the upper template, and the channel body is L-shaped and communicated to the upper surface of the first sealing block from one side of the upper template.
Preferably, the air inlet is connected with an air inlet valve, and the air inlet valve is connected with compressed air.
Preferably, the 3D sealing ring is made of silica gel.
Preferably, a plurality of first positioning pin holes are formed at the intersection of the first positioning area and the first placing area, a plurality of second positioning pin holes are correspondingly formed at the intersection of the second positioning area and the second placing area, and the first positioning pin holes and the second positioning pin holes correspond to the positioning holes of the bipolar plate to be measured; and the first positioning pin hole and the second positioning pin hole are internally provided with positioning pin shafts.
Preferably, a plurality of first guide holes are formed in the first positioning area, second guide holes are correspondingly formed in the second positioning area, and guide pins are arranged in the first guide holes and the second guide holes.
The beneficial effects of the utility model reside in that: the utility model provides a metal bipolar plate welding seam sealing test fixture, including cope match-plate pattern and the lower bolster that cooperate to use, the relative surface of cope match-plate pattern and lower bolster is planar structure, according to the plane simulation mode of product assembly atress, simple structure, has reduced the processing degree of difficulty of mould and can prevent that the slot height in the existing design from taking place the variation and influencing the test result; the first sealing groove and the second sealing groove are correspondingly formed in the upper template and the lower template, the 3D sealing ring with certain elastic compression amount is placed in the second sealing groove, the 3D sealing ring is higher than the plane of the lower template, the cooling channel of the bipolar plate to be tested can be sealed, the mounting mode is simple, and the maintenance is convenient.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
fig. 2 is a schematic structural view of the upper template of the present invention;
fig. 3 is a schematic structural view of the lower template of the present invention.
Detailed Description
The technical solution protected by the present invention will be specifically described below with reference to the accompanying drawings.
Please refer to fig. 1 and fig. 3. The utility model provides a metal bipolar plate welding seam seals test fixture, including cope match-plate pattern 1 and lower bolster 2 of mutually supporting, the bipolar plate that awaits measuring is placed between cope match-plate pattern 1 and the lower bolster 2, just the lower surface of cope match-plate pattern 1 with the upper surface of lower bolster 2 is planar structure, is different from current anchor clamps need process out with the profile modeling structure of bipolar plate surface looks adaptation, not only processes the degree of difficulty big, and the profile modeling structure easily takes place the variation and influences ultimate test result, the utility model discloses a contact surface of cope match-plate pattern 1 and lower bolster 2 and bipolar plate is the plane, and the processing degree of difficulty reduces, and can not take place the problem of warping.
For convenience of description, the lower surface of the upper template 1 includes a first placement area and a first positioning area, and the first positioning area surrounds the first placement area; the upper surface of the lower template 2 correspondingly comprises a second placing area and a second positioning area, and the second positioning area surrounds the second placing area; the first placing area and the second placing area are matched with the shape of a bipolar plate to be tested, namely the contact area of the bipolar plate with the upper template 1 and the lower template 2 is called as a placing area, in order to realize stable matching, a first guide hole 120 and a second guide hole 220 are correspondingly arranged in the first positioning area of the upper template 1 and the second positioning area of the lower template 2, and guide pins 60 are arranged in the first guide hole 120 and the second guide hole 220; meanwhile, a first positioning pin hole 110 is formed at the joint of the first positioning region and the first placement region, a second positioning pin hole 210 is correspondingly formed at the joint of the second positioning region and the second placement region, a positioning pin 50 is configured in the first positioning pin hole 110 and the second positioning pin hole 210, and the first positioning pin hole 110 and the second positioning pin hole 210 correspond to a positioning hole at the edge of a bipolar plate to be measured, so that the positioning of the bipolar plate to be measured can be realized without any improvement on the bipolar plate.
In order to realize the sealing of the cooling channel of the bipolar plate, two ends of the first placing region are provided with first sealing grooves 10, two ends of the second placing region are correspondingly provided with second sealing grooves 20, and elastic 3D sealing rings 30 are placed in the second sealing grooves 20; the 3D sealing ring 30 is matched with the opening of the cooling channel of the bipolar plate to be tested, namely can be tightly attached to the opening of the cooling channel of the bipolar plate to be tested; preferably, the 3D sealing ring 30 is made of silica gel. A plurality of limiting columns 21 are further arranged in the second placing area; in the mold opening state, the upper end surface of the 3D seal ring 30 is higher than the plane of the lower template and higher than the upper end surface of the limit column 21; an air inlet channel 40 is formed at the bottom of the first sealing groove 10, and the air inlet channel 40 is communicated with external compressed air; in a matched die state, along with the downward pressing of the upper template 1, the 3D sealing ring 30 is firstly contacted with the upper template, then the upper template continues to descend, the 3D sealing ring 30 is pressed and deformed until the limiting column 21 prevents the upper template 1 from continuing to descend, and at the moment, the 3D sealing ring is tightly pressed on the outer ring of the bipolar plate cooling channel; and then introducing 3bar of compressed air into the cooling channel through the air inlet channel 40, and measuring whether gas leaks or not by using a leak detector after the air pressure is stable.
In one embodiment, a first seal block 100 protrudes upward from the bottom of the first seal groove 10, a second seal block 200 protrudes upward from the bottom of the second seal groove 20, the 3D seal ring 30 is embedded in a gap between the second seal block 200 and a sidewall of the second seal groove 20, and the air inlet passage 40 is opened on the first seal block 100.
Furthermore, the air inlet passage 40 includes an air inlet 400 and a passage body, the air inlet 400 is provided at a side surface of the upper mold plate 1, the passage body is L-shaped and is communicated from one side of the upper mold plate 1 to the upper surface of the first sealing block 100, and the air inlet is connected to an air inlet valve, and the air inlet valve is connected to compressed air.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (7)
1. The metal bipolar plate welding seam sealing test fixture is characterized by comprising an upper template and a lower template, wherein the lower surface of the upper template and the upper surface of the lower template are both of a planar structure, the lower surface of the upper template comprises a first placing area and a first positioning area, and the first positioning area surrounds the first placing area; the upper surface of the lower template correspondingly comprises a second placing area and a second positioning area, and the second positioning area surrounds the second placing area; the first placing area and the second placing area are matched with the appearance of the bipolar plate to be tested; two ends of the first placing area are provided with first sealing grooves, two ends of the second placing area are correspondingly provided with second sealing grooves, and elastic 3D sealing rings are placed in the second sealing grooves; the 3D sealing ring is matched with the opening of the cooling channel of the bipolar plate to be tested; a plurality of limiting columns are further arranged in the second placing area; in the die opening state, the upper end face of the 3D sealing ring is higher than the plane of the lower template and higher than the upper end face of the limiting column; an air inlet channel is formed in the bottom of the first sealing groove and is communicated with external compressed air.
2. The metal bipolar plate weld seal test fixture of claim 1, wherein a first seal block is protruded upward from the bottom of the first seal groove, a second seal block is protruded upward from the bottom of the second seal groove, the 3D seal ring is embedded in a gap between the second seal block and a sidewall of the second seal groove, and the air inlet channel is opened on the first seal block.
3. The metal bipolar plate weld seal test fixture of claim 2, wherein the air inlet channel includes an air inlet and a channel body, the air inlet is disposed on one side of the upper mold plate, the channel body is L-shaped and is communicated from one side of the upper mold plate to the upper surface of the first seal block.
4. The metal bipolar plate weld seal test fixture of claim 3, wherein an air inlet valve is connected to the air inlet, the air inlet valve being connected to compressed air.
5. The metal bipolar plate weld joint seal test fixture of any one of claims 1 to 4, wherein the 3D sealing ring is made of silica gel.
6. The metal bipolar plate weld joint sealing test fixture as claimed in any one of claims 1 to 4, wherein a plurality of first positioning pin holes are formed at the intersection of the first positioning region and the first placement region, a plurality of second positioning pin holes are correspondingly formed at the intersection of the second positioning region and the second placement region, and the first positioning pin holes and the second positioning pin holes correspond to positioning holes of a bipolar plate to be tested; and the first positioning pin hole and the second positioning pin hole are internally provided with positioning pin shafts.
7. The metal bipolar plate weld joint seal test fixture of any one of claims 1 to 4, wherein a plurality of first guide holes are formed in the first positioning region, a plurality of second guide holes are correspondingly formed in the second positioning region, and guide pins are disposed in the first guide holes and the second guide holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921683602.6U CN210834017U (en) | 2019-10-10 | 2019-10-10 | Metal bipolar plate weld joint sealing test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921683602.6U CN210834017U (en) | 2019-10-10 | 2019-10-10 | Metal bipolar plate weld joint sealing test fixture |
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| Publication Number | Publication Date |
|---|---|
| CN210834017U true CN210834017U (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921683602.6U Active CN210834017U (en) | 2019-10-10 | 2019-10-10 | Metal bipolar plate weld joint sealing test fixture |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345163A (en) * | 2020-10-16 | 2021-02-09 | 天津七所高科技有限公司 | Device and method for detecting air leakage position of welding seam of lower cover of automobile battery box |
-
2019
- 2019-10-10 CN CN201921683602.6U patent/CN210834017U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112345163A (en) * | 2020-10-16 | 2021-02-09 | 天津七所高科技有限公司 | Device and method for detecting air leakage position of welding seam of lower cover of automobile battery box |
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