CN112570866A - Rolling type resistance welding device for metal bipolar plate and processing method - Google Patents
Rolling type resistance welding device for metal bipolar plate and processing method Download PDFInfo
- Publication number
- CN112570866A CN112570866A CN202011298373.3A CN202011298373A CN112570866A CN 112570866 A CN112570866 A CN 112570866A CN 202011298373 A CN202011298373 A CN 202011298373A CN 112570866 A CN112570866 A CN 112570866A
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- welding
- welding path
- fastening device
- path plate
- plate
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- 238000003466 welding Methods 0.000 title claims abstract description 172
- 239000002184 metal Substances 0.000 title claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 31
- 238000005096 rolling process Methods 0.000 title claims abstract description 15
- 238000003672 processing method Methods 0.000 title claims description 3
- 238000000034 method Methods 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000011810 insulating material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000009966 trimming Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 5
- 239000000446 fuel Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004093 laser heating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/06—Resistance welding; Severing by resistance heating using roller electrodes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/30—Features relating to electrodes
- B23K11/3063—Electrode maintenance, e.g. cleaning, grinding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/36—Auxiliary equipment
- B23K11/362—Contact means for supplying welding current to the electrodes
-
- 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 invention discloses a rolling type resistance welding device for a metal bipolar plate, which comprises an upper fastening device and a lower fastening device, wherein an upper welding path plate is inserted into the upper fastening device, a lower welding path plate is inserted into the lower fastening device, an upper roller is arranged on the upper surface of the upper welding path plate, a lower roller is arranged on the lower surface of the lower welding path plate, welding path lines which are distributed up and down symmetrically are formed on the upper surface and the lower surface of the upper welding path plate and the lower welding path plate, the welding path lines are distributed in a convex shape, and the welding path lines at the upper welding path plate and the lower welding path plate are distributed correspondingly in a consistent manner. The metal cathode and anode plates are fixed between the upper welding path and the lower welding path through the fastening device, and the time required for trimming the resistance welding joint can be effectively reduced by utilizing the characteristic that the welding paths can be quickly replaced.
Description
Technical Field
The invention relates to the technical field of welding tool fixtures, in particular to a rolling type resistance welding device for a metal bipolar plate, and particularly relates to a mechanical connection structure of the rolling type resistance welding device.
Background
At present, the connection mode of the metal polar plates of the fuel cell mainly relates to methods such as laser welding and bonding, but the laser welding often adopts high-speed laser welding for improving efficiency, but the high welding speed in the welding process causes poor gas protection performance, and the heat input of the upper and lower polar plates is inconsistent due to the welding seam formed by the laser heating of the single side of the polar plates, which causes the defects of large deformation of the welded polar plates and the like. Secondly, under the condition of ensuring the connection performance of the pole plates, the equipment can use larger pressure to connect during welding due to the selection of a resistance welding mode, so that the problem that the quality of a welded component is influenced due to the clamping of a clamp in laser welding can not occur in the connection method.
Disclosure of Invention
The invention aims to provide a rolling type resistance welding device for a metal bipolar plate, wherein a fastening device is assembled with a welding path and plays an insulating role, so that current directly acts on the welding path through a roller to reduce redundant loss, the roller is in contact with the welding path through line contact, and resistance heat is formed between thin plates at the moment of contact to melt the contact part of the two polar plates to form a welding line so as to achieve interatomic combination.
In order to achieve the purpose, the technical scheme of the invention is as follows: the metal bipolar plate rolling type resistance welding device comprises an upper fastening device and a lower fastening device, wherein an upper welding path plate is inserted into the upper fastening device, a lower welding path plate is inserted into the lower fastening device, an upper roller is arranged on the upper surface of the upper welding path plate, a lower roller is arranged on the lower surface of the lower welding path plate, welding path lines which are distributed in an up-and-down symmetrical mode are formed on the upper surface and the lower surface of the upper welding path plate and the lower welding path plate respectively, the welding path lines are distributed in a protruding mode, and the welding path lines at the positions of the upper welding path plate and the lower welding path plate are distributed correspondingly in a consistent mode.
Furthermore, both ends of the upper roller and the lower roller are connected with resistance welding equipment.
Furthermore, the upper fastening device and the lower fastening device are of rectangular frame structures, an opening is formed in one side frame, assembling grooves are formed in the inner walls of the two sides of the frame, the assembling grooves of the upper fastening device are used for assembling the upper welding path plate, and the assembling grooves of the lower fastening device are used for assembling the lower welding path plate.
Preferably, the welding path side plate can be replaced at any time, and the method can replace the selected welding path to achieve the best welding effect. In addition, the resistance welding needs to correct a welding head in the welding process, such as resistance spot welding, the spot welding head of the resistance spot welding needs to be subjected to grinding and polishing treatment after being used for a long time, the spot welding head is prevented from being adhered with a welding member to influence the surface quality of the member, and the welding path of the resistance spot welding can be replaced in time to reduce the time required for restitution of the welding head of the resistance welding.
During welding, the upper fastening device is fixed, the lower fastening device is pushed upwards by an air pressure device to achieve a clamping effect, the part of the metal cathode and anode plate connected with a welding path is clamped, the metal cathode and anode plate is positioned between the upper welding path plate and the lower welding path plate, the upper roller and the lower roller connected with the resistance welding equipment at two ends are matched with the fastening device in a line contact mode and transmit the current required by resistance welding to the upper welding path plate and the lower welding path plate on the fastening device, resistance welding seams are formed after metal is melted and cooled by the contact of the upper welding path plate and the lower welding path plate with the cathode and anode plate to achieve the effect of metal bipolar plate welding, and the upper roller and the lower roller synchronously move in the same direction and are in linear contact with the welding paths of the upper welding path plate and the lower welding path plate.
The invention discloses a rolling type resistance welding device for a metal bipolar plate, which has the following beneficial effects: the metal cathode and anode plates are fixed between the upper welding path and the lower welding path through the fastening device, the fastening device provides pressure required by resistance welding for the cathode and anode plates, and the problem of energy loss in the welding process can be effectively reduced due to the fact that the fastening device adopts insulating materials, and the time required for trimming a resistance welding joint can be effectively reduced by means of the characteristic that the welding paths can be replaced quickly. In addition, the rollers on the polar plate resistance welding tool provide welding current in a line contact mode on a welding path in the welding process, so that the controllability of the welding quality is guaranteed, and if welding defects occur at a certain position on a polar plate, the defects can be quickly positioned and cause analysis can be carried out.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
FIG. 2 is a schematic diagram of a welding path plate structure according to the present invention.
Fig. 3 is a schematic structural view of the fastening device of the present invention.
FIG. 4 is a schematic view of the roller structure according to the present invention.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easy to understand, the invention is further described with reference to the figures and the specific embodiments.
The invention discloses a rolling type resistance welding device of a metal bipolar plate, which is shown in figure 1 and is different from the prior art in that: the welding device comprises an upper fastening device 1 and a lower fastening device 2, wherein the upper fastening device 1 and the lower fastening device 2 are controlled by a pneumatic device, an upper welding path plate 3 is inserted into the upper fastening device 1, a lower welding path plate 4 is inserted into the lower fastening device 2, an upper roller 5 is arranged on the upper surface of the upper welding path plate 3, a lower roller 6 is arranged on the lower surface of the lower welding path plate 4, welding path lines 7 which are symmetrically distributed up and down are formed on the upper surface and the lower surface of the upper welding path plate 3 and the lower welding path plate 4, the welding path lines 7 are distributed in a convex shape, and the welding path lines 7 at the upper welding path plate 3 and the lower welding path plate 4 are correspondingly distributed in a consistent manner.
In specific implementation, two ends of the upper roller 5 and the lower roller 6 are both connected with resistance welding equipment, two ends of the upper roller 5 and the lower roller 6 are made of copper materials and have good conductivity, and current is provided for the metal bipolar plate in a line contact mode in the welding process, so that the welding of the fuel cell is performed in a segmented mode, and the consistency of the welding quality of each segment is guaranteed.
In practical application, the upper fastening device 1 and the lower fastening device 2 are rectangular frame structures, one side frame of each of which is provided with an opening 8, and the inner walls of two sides of each frame are provided with assembling grooves 9, wherein the assembling grooves of the upper fastening device 1 are used for assembling the upper welding path plate 3, and the assembling grooves of the lower fastening device 2 are used for assembling the lower welding path plate 4.
During welding, the upper fastening device is fixed, and the lower fastening device is pushed upwards by the air pressure device to achieve a clamping effect. The part of connecting the metal cathode and anode plates with the welding path is clamped, the metal cathode and anode plates are positioned between the upper welding path plate 3 and the lower welding path plate 4, the fastening device is made of an insulating material due to the fact that the fastening device also has the requirement of non-conductivity, energy loss is reduced while fastening, the welding path is made of pure copper, the effect that the welded metal bipolar plate can realize quick cooling is guaranteed, welding deformation of a component caused by local heating of the metal electrode plate in the welding process is reduced, the fastening device can provide clamping force for the component in the welding process, and the component is free to deform due to no clamping in the welding process.
The welding path plate can be replaced at any time, so that the welding is in the state of highest efficiency due to the problems that the resistance welding joint needs to be ground and the like are not considered. The device promotes welding current to transmit current to the cathode plate and the anode plate in a line contact mode through connecting the resistance welding machine, ensures that welding is segmented welding, and can find corresponding reasons for generating defects when the defects of welding seams occur. In addition, the connection of different types of fuel cell metal bipolar plates can be quickly realized through the replacement of the welding path, and the replacement of a welding clamp similar to laser welding is not needed. The time for replacing welding tools in different types of production can be greatly reduced, the working efficiency is improved, and the process flow is improved.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The rolling type resistance welding device for the metal bipolar plate is characterized by comprising an upper fastening device (1) and a lower fastening device (2), wherein an upper welding path plate (3) is inserted into the upper fastening device (1), a lower welding path plate (4) is inserted into the lower fastening device (2), an upper roller (5) is arranged on the upper surface of the upper welding path plate (3), a lower roller (6) is arranged on the lower surface of the lower welding path plate (4), welding path lines (7) which are symmetrically distributed up and down are formed on the upper surface and the lower surface of the upper welding path plate (3) and the lower welding path plate (4), the welding path lines (7) are distributed in a convex shape, and the welding path lines (7) at the positions of the upper welding path plate (3) and the lower welding path plate (4) are correspondingly distributed in a consistent manner.
2. The rolling resistance welding apparatus of metal bipolar plates as claimed in claim 1, wherein: the two ends of the upper roller (5) and the lower roller (6) are both connected with resistance welding equipment, and the two ends of the upper roller (5) and the lower roller (6) are made of copper materials.
3. The rolling resistance welding apparatus of metal bipolar plates as claimed in claim 1, wherein: the upper fastening device (1) and the lower fastening device (2) are of rectangular frame structures, an opening (8) is formed in one side frame, assembling grooves (9) are formed in the inner walls of the two sides of the frame, the assembling grooves of the upper fastening device (1) are used for assembling the upper welding path plate (3), and the assembling grooves of the lower fastening device (2) are used for assembling the lower welding path plate (4).
4. The rolling resistance welding apparatus of metal bipolar plates as claimed in claim 1, wherein: the upper fastening device (1) and the lower fastening device (2) are made of insulating materials.
5. The rolling resistance welding apparatus of metal bipolar plates as claimed in claim 1, wherein: the upper welding path plate (3) and the lower welding path plate (4) are made of pure copper.
6. The processing method of the metal bipolar plate rolling type resistance welding device is characterized in that: during the welding process, the welding head is welded, fixing an upper fastening device, pushing up a lower fastening device by using an air pressure device to achieve a clamping effect, clamping a part where a metal cathode and anode plate is connected with a welding path, wherein the metal cathode and anode plate is positioned between an upper welding path plate and a lower welding path plate, an upper roller and a lower roller which are connected with resistance welding equipment at two ends are matched with the fastening device in a line contact manner, and transmitting current required by resistance welding to the upper welding path plate and the lower welding path plate on the fastening device, the upper welding path plate, the lower welding path plate and the cathode-anode plate are contacted with each other to generate resistance heat between the cathode plate and the anode plate to melt and cool metal and then form a resistance welding seam to achieve the welding effect of the metal bipolar plate, and the upper roller and the lower roller synchronously move in the same direction and are linearly contacted with the welding paths of the upper welding path plate and the lower welding path plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011298373.3A CN112570866B (en) | 2020-11-18 | 2020-11-18 | Rolling type resistance welding device and processing method for metal bipolar plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011298373.3A CN112570866B (en) | 2020-11-18 | 2020-11-18 | Rolling type resistance welding device and processing method for metal bipolar plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112570866A true CN112570866A (en) | 2021-03-30 |
| CN112570866B CN112570866B (en) | 2024-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011298373.3A Active CN112570866B (en) | 2020-11-18 | 2020-11-18 | Rolling type resistance welding device and processing method for metal bipolar plate |
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| CN (1) | CN112570866B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040226919A1 (en) * | 2003-02-14 | 2004-11-18 | Daimlerchrysler Ag | Method and system for resistance seam welding of a foil and at least one foil support of a fuel cell system |
| US20040247927A1 (en) * | 2003-06-06 | 2004-12-09 | Kurz Douglas L. | Method of producing seamless, multi-layer, bonded, metallic, laminate strips or coils of arbitrarily long length |
| EP1826850A2 (en) * | 2006-02-25 | 2007-08-29 | Behr GmbH & Co. KG | Method for joining bipolar panels, in particular for a fuel cell stack of a vehicle |
| KR20090060929A (en) * | 2007-12-10 | 2009-06-15 | 주식회사 포스코 | Device and method for welding metal sandwich plates and sheets by the resistance welding of many spots using the electrode mode of roller |
| JP2009193868A (en) * | 2008-02-15 | 2009-08-27 | Nissan Motor Co Ltd | Separator welding method, separator welding device, and separator |
| KR20120075024A (en) * | 2010-12-28 | 2012-07-06 | 주식회사 성우하이텍 | Pressing device for roll spot welder |
| CN102581487A (en) * | 2012-02-16 | 2012-07-18 | 上海交通大学 | Laser weld-bonding method of bipolar plate of fuel cell |
| CN103878524A (en) * | 2014-03-28 | 2014-06-25 | 上海交通大学 | Multi-section clamping self-adaptation laser welding clamp for ultrathin metal bipolar plate |
| CN214264269U (en) * | 2020-11-18 | 2021-09-24 | 上海治臻新能源装备有限公司 | Rolling type resistance welding device for metal bipolar plate |
-
2020
- 2020-11-18 CN CN202011298373.3A patent/CN112570866B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040226919A1 (en) * | 2003-02-14 | 2004-11-18 | Daimlerchrysler Ag | Method and system for resistance seam welding of a foil and at least one foil support of a fuel cell system |
| US20040247927A1 (en) * | 2003-06-06 | 2004-12-09 | Kurz Douglas L. | Method of producing seamless, multi-layer, bonded, metallic, laminate strips or coils of arbitrarily long length |
| EP1826850A2 (en) * | 2006-02-25 | 2007-08-29 | Behr GmbH & Co. KG | Method for joining bipolar panels, in particular for a fuel cell stack of a vehicle |
| KR20090060929A (en) * | 2007-12-10 | 2009-06-15 | 주식회사 포스코 | Device and method for welding metal sandwich plates and sheets by the resistance welding of many spots using the electrode mode of roller |
| JP2009193868A (en) * | 2008-02-15 | 2009-08-27 | Nissan Motor Co Ltd | Separator welding method, separator welding device, and separator |
| KR20120075024A (en) * | 2010-12-28 | 2012-07-06 | 주식회사 성우하이텍 | Pressing device for roll spot welder |
| CN102581487A (en) * | 2012-02-16 | 2012-07-18 | 上海交通大学 | Laser weld-bonding method of bipolar plate of fuel cell |
| CN103878524A (en) * | 2014-03-28 | 2014-06-25 | 上海交通大学 | Multi-section clamping self-adaptation laser welding clamp for ultrathin metal bipolar plate |
| CN214264269U (en) * | 2020-11-18 | 2021-09-24 | 上海治臻新能源装备有限公司 | Rolling type resistance welding device for metal bipolar plate |
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| CN112570866B (en) | 2024-03-12 |
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