CN108637476B - Laser welding electromagnetic adsorption clamping device of fuel cell bipolar plate and processing method - Google Patents
Laser welding electromagnetic adsorption clamping device of fuel cell bipolar plate and processing method Download PDFInfo
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- CN108637476B CN108637476B CN201810404283.4A CN201810404283A CN108637476B CN 108637476 B CN108637476 B CN 108637476B CN 201810404283 A CN201810404283 A CN 201810404283A CN 108637476 B CN108637476 B CN 108637476B
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- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
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- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
-
- 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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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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
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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
Abstract
The invention discloses a laser welding electromagnetic adsorption clamping device of a fuel cell bipolar plate, which comprises a welding rack, a welding base, a welding auxiliary cover plate, a welding cover plate and a welding fixing plate, wherein the welding rack is arranged on the welding base; the welding rack is provided with a guide conveying device which guides and conveys the bipolar plate placed on the welding base to the lower part of the position to be welded on the welding rack; a lifting device is arranged below the position to be welded, and the lifting device is matched with the welding auxiliary cover plate to provide mechanical clamping outside the welding path; the welding base is provided with a first electromagnetic force generating device, and the first electromagnetic force generating device electromagnetically adsorbs and clamps a first magnet on the welding cover plate on the inner side of the welding path. The invention simplifies the clamping of one bottom plate and two cover plates of the traditional bipolar plate into the clamping of one bottom plate and one cover plate, and simplifies the processes of twice clamping and twice welding of the metal bipolar plate into one clamping and one-step welding, thereby realizing the integrated and high-efficiency welding preparation of the metal bipolar plate.
Description
Technical Field
The invention belongs to the technical field of fuel cells, and particularly relates to a laser welding electromagnetic adsorption clamping device of a fuel cell bipolar plate and a processing method.
Background
The fuel cell generates electric energy through the electrochemical reaction of hydrogen and oxygen, the final product is water, and the fuel cell is an important ring formed by new energy sources with no pollution and zero emission at present. Meanwhile, due to volume and mass limitations, the metal bipolar plate is gradually replacing the graphite polar plate and carrying hydrogen, oxygen and cooling liquid. The existing metal bipolar plate mainly connects an anode plate and a cathode plate together in a laser welding mode to form a two-plate three-field structure.
In order to realize laser welding of the metal bipolar plate, the welding bottom plate and the welding cover plate are matched with each other, the two metal thin plates 2' of the area to be welded are pressed tightly through the upper pressing rib 1' and the lower pressing rib 3', and then laser 4' is introduced from the slit of the upper cover plate above the metal thin plates 2' to complete the connection of the bipolar plate, as shown in fig. 1. However, in order to effectively isolate the hydrogen field, the oxygen field, and the cooling field, the closed weld path 5' is closed, as shown in fig. 2. The closed welding route causes that one welding upper cover plate cannot bear all welding characteristics, therefore, two welding upper cover plates need to be matched in the actual welding process, as shown in fig. 3, the first welding upper cover plate 6 'and the second welding upper cover plate 7' segment the continuous welding route, and the laser welding preparation of one pair of metal bipolar plates is completed through twice clamping. Due to the limitation of a welding clamp, the welding process of the existing metal bipolar plate is complex and low in efficiency, repeated clamping also easily affects the surface quality of the metal bipolar plate, and therefore the traditional welding process and equipment cannot meet the large-batch preparation requirement of the metal bipolar plate of the fuel cell. Through the literature search of the prior art, the research reports aiming at the laser welding integration and high-efficiency clamping device and method of the metal bipolar plate are few, and special design is needed.
Disclosure of Invention
The invention provides a laser welding electromagnetic adsorption clamping device of a fuel cell bipolar plate and a processing method thereof aiming at the problems. The traditional distributed laser welding scheme needs to be formed by matching two sets of welding upper cover plates and a welding base, and laser welding preparation of a pair of metal bipolar plates needs to be completed by two times of manual clamping, so that the requirement for mass preparation of the fuel cell metal bipolar plates cannot be met. The invention integrates the discrete characteristics of the welding upper cover plate into a whole through electromagnetic adsorption, completes the integral fixation of the welding path through one-time clamping, simplifies the step-by-step welding process into a one-step welding process, and realizes the high-efficiency preparation of the fuel cell bipolar plate laser welding.
The purpose of the invention can be realized by the following technical scheme: a laser welding electromagnetic adsorption clamping device for a fuel cell bipolar plate comprises a welding rack, a welding base, a welding auxiliary cover plate, a welding cover plate and a welding fixing plate; the welding machine frame is provided with a guide conveying device, and the guide conveying device guides and conveys the bipolar plate placed on the welding base to the position below the position to be welded on the welding machine frame; a lifting device is arranged below the position to be welded, the lifting device lifts the welding base to the position to be welded, and the lifting device is matched with a welding auxiliary cover plate fixed on the welding rack to provide mechanical clamping for the outer side of a welding path on the bipolar plate; the welding base is provided with a first electromagnetic force generating device, the welding cover plate is arranged above the position to be welded, the welding cover plate is provided with a first magnet matched with the first electromagnetic force generating device, and the first electromagnetic force generating device electromagnetically adsorbs the first magnet, so that the welding cover plate is fixed in a matched hole on the welding auxiliary cover plate, and electromagnetic adsorption clamping on the inner side of a welding path on the bipolar plate is provided; the welding fixing plate is rotatably installed on the welding rack and located beside the position to be welded, the welding fixing plate is provided with a second electromagnetic force generating device, the welding cover plate is provided with a second magnet matched with the second electromagnetic force generating device, and the second electromagnetic force generating device electromagnetically adsorbs the second magnet, so that the welding cover plate is fixed on the welding fixing plate, and the electromagnetic adsorption clamping of the welding cover plate is provided.
Preferably, the welding base is provided with positioning features for positioning the bipolar plate profile.
Preferably, the guiding and conveying device is a power guiding wheel.
Preferably, the lifting device is an electric cylinder or an air cylinder with a piston rod vertically arranged upwards.
Preferably, the welding base is provided with a first pit matched with the first magnet, and the first magnet is matched with the first pit to position the welding cover plate. Further, the first magnet and the first pit are both wedge-shaped.
Preferably, a second pit matched with the second magnet is formed in the welding fixing plate, and the second magnet is matched with the second pit to position the welding cover plate. Further, the second magnet and the second pit are both wedge-shaped.
The processing method of the fuel cell bipolar plate laser welding electromagnetic adsorption clamping device comprises the following steps:
(1) generating profile characteristics of a welding base, a welding auxiliary cover plate, a welding cover plate and a welding fixing plate which are matched according to the structure of the bipolar plate and a welding path to be welded on the bipolar plate;
(2) positioning the bipolar plate on a welding base at a loading position, conveying the welding base and the bipolar plate to the position below a position to be welded through a guide conveying device on a welding rack, lifting the welding base and the bipolar plate to the position to be welded by a lifting device, enabling the welding base to be abutted against an auxiliary welding cover plate, and disconnecting the electromagnetic adsorption of a first electromagnetic force generating device on the welding base;
(3) the welding fixing plate is turned over, so that the welding cover plate fixed on the welding fixing plate through electromagnetic adsorption is turned over to the position right above the position to be welded synchronously, then the welding fixing plate cuts off the electromagnetic adsorption of the second electromagnetic force generating device to release the welding cover plate, the welding base fixes the welding cover plate through restoring the electromagnetic adsorption of the first electromagnetic force generating device, and laser is used for welding the bipolar plate through the welding cover plate;
(4) after laser welding of the bipolar plate is completed, the welding base releases the welding cover plate by cutting off electromagnetic adsorption of the first electromagnetic force generating device, the welding fixing plate recovers electromagnetic adsorption of the second electromagnetic force generating device to fix the welding cover plate, and the bipolar plate and the welding base move to a discharging position through the guide conveying device.
Preferably, in the step (2), when the guiding and conveying device conveys the welding base and the bipolar plate to be right below the position to be welded, the guiding and conveying device stops acting.
Compared with the prior art, the invention has the beneficial effects that: 1. the invention integrates the dispersed welding clamping characteristics into a whole based on electromagnetic adsorption, and clamps the outer side of the welding path by electromagnetic adsorption and clamps the inner side of the welding path by electromagnetic adsorption, thereby realizing the integrated welding clamping of the metal bipolar plate and effectively simplifying the process of the traditional laser welding clamping;
2. the welding clamping characteristics on the components can be designed according to the configuration change of the metal bipolar plate, and the laser welding clamping scheme of various fuel cell metal bipolar plates can be met;
3. the bipolar plate realizes full-automatic circulation by a mechanism from feeding to finishing the laser welding preparation process, is different from the randomness and uncertainty of the traditional manual clamping, and ensures the efficiency and quality of laser preparation;
4. the method can efficiently finish the preparation of the closed welding path of the fuel cell metal bipolar plate with high quality in one-time laser welding preparation, and provides a feasible method for the mass laser preparation of the fuel cell metal bipolar plate.
Drawings
Fig. 1 is a schematic clamping diagram of a laser welding metal sheet in a traditional welding process of a fuel cell metal bipolar plate.
Fig. 2 is a schematic view of a closed welding path on a bipolar plate in a conventional fuel cell metal bipolar plate welding process.
FIG. 3 is a schematic diagram of a conventional welding process for a metal bipolar plate of a fuel cell, in which two upper cover plates are welded and laser welding is completed by clamping step by step.
Fig. 4 is a schematic view of the overall structure of embodiment 1 of the present invention.
Fig. 5 is a schematic side view of embodiment 1 of the present invention.
Figure 6 is a schematic view of the bipolar plate positioned on a welded seating in example 1 of the present invention.
Fig. 7 is a schematic view illustrating that the welding cover plate is fixed to the welding fixing plate in embodiment 1 of the present invention.
Fig. 8 is a schematic structural view of a laser welding fixture in embodiment 1 of the present invention.
Fig. 9 is another schematic structural diagram of the laser welding clamping mechanism in embodiment 1 of the present invention.
Fig. 10 is a partial schematic view of mechanical clamping and electromagnetic adsorption clamping in embodiment 1 of the present invention.
Fig. 11 is a schematic view of the overall structure of embodiment 2 of the present invention.
The parts in the figures are numbered as follows:
1 'upper pressing rib, 2' metal sheet, 3 'lower pressing rib, 4' closed welding path, 5 'first welding upper cover plate and 6' second welding upper cover plate;
the welding machine comprises a welding machine frame 1, a welding base 2, an auxiliary welding cover plate 3, a welding cover plate 4, a welding fixing plate 5, a bipolar plate 6, a power guide wheel 7, an external positioning feature 8, an electric cylinder 9, a fixing bolt 10, a first electromagnetic force generating device 11, a first magnet 12, a first pit 13, a second electromagnetic force generating device 14, a second magnet 15, a second pit 16 and a continuous welding machine frame 17.
Detailed Description
The following detailed description of the embodiments of the present invention will be given in conjunction with the accompanying drawings to make it clear to those skilled in the art how to practice the present invention. While the invention has been described in connection with preferred embodiments thereof, these embodiments are merely illustrative, and not restrictive, of the scope of the invention.
Example 1
Referring to fig. 1, a fuel cell bipolar plate laser welding electromagnetic adsorption clamping device is shown in a general layout as fig. 4, and partial structures are shown in fig. 5 to 10. Specifically, the clamping device comprises a welding frame 1, a welding base 2, a welding auxiliary cover plate 3, a welding cover plate 4 and a welding fixing plate 5. The feeding and discharging mechanism of the bipolar plate 6 is mainly formed by matching a welding rack 1 and a welding base 2, and the laser welding clamping mechanism is mainly formed by matching the welding rack 1, the welding base 2, a welding auxiliary cover plate 3 and a welding cover plate 4; the welding part self-positioning mechanism is mainly formed by matching a welding cover plate 4 and a welding fixing plate 5.
The feeding and discharging mechanism comprises: a row of power guide wheels 7 are respectively arranged on the left side and the right side of the welding rack 1, a welding base 2 is arranged on the two rows of power guide wheels 7, and the two rows of power guide wheels 7 guide forwards and backwards and drive the welding base 2 to move forwards and backwards; two sides of the lower surface of the welding base 2 are arranged on two rows of power guide wheels 7, and the upper surface of the welding base 2 is provided with outer positioning features 8 for positioning the bipolar plate 6 to be welded by laser or well welded, specifically, because the bipolar plate 6 is rectangular plate-shaped, the outer positioning features 8 are two L-shaped protrusions which are arranged diagonally, see fig. 6; the upper part of the rear part of the power guide wheel 7 is a position to be welded, an electric cylinder 9 (or an air cylinder) arranged on the welding rack 1 is arranged right below the position to be welded, and an output rod of the electric cylinder 9 is vertically arranged upwards. Taking bipolar plate 6 feeding as an example, the bipolar plate 6 to be laser welded is placed on the welding base 2 at the feeding position through the outer positioning features 8, the power guide wheels 7 convey the welding base 2 and the bipolar plate 6 to the position below the position to be welded from front to back, and the electric cylinder 9 acts vertically upwards to lift the welding base 2 and the bipolar plate 6 to the position to be welded to wait for clamping of a subsequent laser welding clamping mechanism. During specific implementation, a stop block 17 for blocking the welding base 2 is arranged at the feeding position on the welding rack 1, so that the welding base 2 is prevented from being separated from the welding rack 1.
Laser welding fixture: the welding auxiliary cover plate 3 is fixed at a position to be welded on the welding rack 1 through a fixing bolt 10, a hole is formed in the middle of the welding auxiliary cover plate 3 and is matched with the welding cover plate 4 in size, referring to fig. 4, the lower surface of the welding auxiliary cover plate 3 is matched with the end part of an output rod of an electric cylinder 9 to clamp the welding base 2, and the outer side of a closed welding path of the bipolar plate 6 is mechanically clamped, referring to fig. 9 and a left rectangular dotted frame of fig. 10; the lower surface of the welding base 2 is provided with a first electromagnetic force generating device 11, a welding cover plate 4 is arranged above a position to be welded, the lower surface of the welding cover plate 4 is connected with a first protruding magnet 12, the first electromagnetic force generating device 11 generates electromagnetic force to adsorb the first magnet 12, so that the inner side electromagnetic adsorption clamping of a position to be welded on the bipolar plate 6 is realized, see a right rectangular dotted frame in fig. 10, the upper surface of the welding base 2 is provided with a first pit 13 matched with the first magnet 12, and the first magnet 12 and the first pit 13 are matched to realize the positioning of the welding cover plate 4, see fig. 10.
Self-align mechanism of welding part: referring to fig. 6 to 8, the welding fixing plate 5 is installed at the rear upper part of the position to be welded, one edge of the welding fixing plate 5 is installed on the welding rack 1, and the welding fixing plate 5 can turn back and forth with the edge as an axis, a second electromagnetic force generating device 14 is installed on the surface of the welding fixing plate 5 facing away from the welding cover plate 4, a second magnet 15 protruding is connected to the upper surface of the welding cover plate 4, and the second electromagnetic force generating device 14 generates electromagnetic force to attract the second magnet 15; and a second pit 16 matched with the second magnet 15 is formed in the surface, close to the welding cover plate 4, of the welding fixing plate 5, and the second magnet 15 is matched with the second pit 16 to position the welding cover plate 4 so as to prepare for next welding clamping.
It should be noted that the welded cover plate 4 is designed in a mosaic structure, the welded cover plate 4 in this embodiment integrates the welding paths of the first welded cover plate 6' and the second welded cover plate 7', and the closed welding path 5' can be welded on the bipolar plate 6 through the welded cover plate 4, as shown in fig. 2 and 3.
The processing method of the fuel cell bipolar plate laser welding electromagnetic adsorption clamping device comprises the following steps:
(1) generating the shape surface characteristics of a welding base 2, a welding auxiliary cover plate 3, a welding cover plate 4 and a welding fixing plate 5 which are matched according to the structure of the bipolar plate 6 and the welding path to be welded on the bipolar plate;
(2) the bipolar plate 6 is positioned on the welding base 2 at the loading position, the welding base 2 and the bipolar plate 6 are sent to the lower part of the position to be welded through a power guide wheel 7 on the welding rack 1, an electric cylinder 9 lifts the welding base 2 and the bipolar plate 6 to the position to be welded, the welding base 2 is enabled to be abutted against the lower surface of the welding auxiliary cover plate 3, and at the moment, the electromagnetic adsorption of a first electromagnetic force generating device 11 on the welding base 2 is disconnected;
(3) the welding fixing plate 5 is turned over, so that the welding cover plate 4 fixed on the welding fixing plate 5 through electromagnetic adsorption is synchronously turned over to be right above the position to be welded, the welding fixing plate 5 releases the welding cover plate 4 by cutting off the electromagnetic adsorption of the second electromagnetic force generating device 14, the welding base 2 fixes the welding cover plate 4 by recovering the electromagnetic adsorption of the first electromagnetic force generating device 11, and laser is welded on the bipolar plate 6 through the welding cover plate when laser is used;
(4) after laser welding of the bipolar plate 6 is completed, the welding base 2 releases the welding cover plate 4 by cutting off electromagnetic adsorption of the first electromagnetic force generation device 11, the welding fixing plate 5 recovers electromagnetic adsorption of the second electromagnetic force generation device 14 to fix the welding cover plate 4, and the bipolar plate 6 and the welding base 2 move to a blanking position through the power guide wheel 7 to complete one-time laser welding preparation.
In the step (2), when the power guide wheel 7 sends the welding base 2 and the bipolar plate 6 to be right below the position to be welded, the power guide wheel 7 stops acting.
The laser welding clamping device provided by the invention is used for various metal bipolar plates 6, and only the shape surface characteristics of the welding base 2, the welding auxiliary cover plate 3, the welding cover plate 4 and the welding fixing plate 5 need to be modified.
Example 2
Referring to fig. 11, the laser welding electromagnetic adsorption clamping device for the fuel cell bipolar plate is applied to a welding production line, and is different from the above embodiment in that the device further comprises a welding continuous frame 18, and the welding continuous frame 18 adopts power guide wheels 7 arranged on two sides to guide and convey a plurality of welding bases 2 and the bipolar plates 6 on the welding bases 2. The feeding position and the blanking position on the welding rack 1 are connected to the welding continuous rack 18 to form a complete welding production line, and the power guide wheel 7 on the welding rack 1 is matched with the power guide wheel 7 on the welding continuous rack 18 to convey the welding base 2 and the bipolar plate 6 together. Specifically, the welding assembly line is annularly arranged, the welding base 2 and the bipolar plate 6 can be circularly conveyed on the welding assembly line, the whole welding assembly line saves occupied space, and the production efficiency is improved.
It should be noted that many variations and modifications of the embodiments of the present invention fully described are possible and are not to be considered as limited to the specific examples of the above embodiments. The above examples are given by way of illustration of the invention and are not intended to limit the invention. In conclusion, the scope of the present invention should include those changes or substitutions and modifications which are obvious to those of ordinary skill in the art.
Claims (7)
1. A laser welding electromagnetic adsorption clamping device of a fuel cell bipolar plate is characterized by comprising a welding rack, a welding base, a welding auxiliary cover plate, a welding cover plate and a welding fixing plate;
the welding machine frame is provided with a guide conveying device, and the guide conveying device guides and conveys the bipolar plate placed on the welding base to the position below the position to be welded on the welding machine frame;
a lifting device is arranged below the position to be welded, the lifting device lifts the welding base to the position to be welded, and the lifting device is matched with a welding auxiliary cover plate fixed on the welding rack to provide mechanical clamping for the outer side of a welding path on the bipolar plate;
the welding base is provided with a first electromagnetic force generating device, the welding cover plate is arranged above the position to be welded, the welding cover plate is provided with a first magnet matched with the first electromagnetic force generating device, and the first electromagnetic force generating device electromagnetically adsorbs the first magnet, so that the welding cover plate is respectively fixed in matched holes on the welding auxiliary cover plate, and electromagnetic adsorption clamping on the inner side of a welding path on the bipolar plate is provided;
the welding fixing plate is rotatably arranged on the welding rack and located beside the position to be welded, the welding fixing plate is provided with a second electromagnetic force generating device, the welding cover plate is provided with a second magnet matched with the second electromagnetic force generating device, and the second electromagnetic force generating device electromagnetically adsorbs the second magnet, so that the welding cover plate is fixed on the welding fixing plate, and electromagnetic adsorption clamping is provided for the welding cover plate;
wherein, the welding base is provided with a positioning feature for positioning the outline of the bipolar plate; the guide conveying device is a power guide wheel; the lifting device is an electric cylinder or an air cylinder with a piston rod vertically arranged upwards.
2. The laser welding electromagnetic adsorption clamping device of the fuel cell bipolar plate as claimed in claim 1, wherein a first concave pit matched with the first magnet is formed in the welding base, and the first magnet is matched with the first concave pit to position the welding cover plate.
3. The laser welded electromagnetic absorption clamping device of a fuel cell bipolar plate as claimed in claim 2, wherein the first magnet and the first recess are wedge-shaped.
4. The laser welding electromagnetic adsorption clamping device of the fuel cell bipolar plate as claimed in claim 1, wherein a second concave pit matched with the second magnet is formed on the welding fixing plate, and the second magnet is matched with the second concave pit to position the welding cover plate.
5. The laser-welded electromagnetic absorption clamping device for a fuel cell bipolar plate as claimed in claim 4, wherein the second magnet and the second recess are wedge-shaped.
6. A method for processing a fuel cell bipolar plate laser welding electromagnetic adsorption clamping device according to any one of claims 1 to 5, characterized by comprising the following steps:
(1) generating profile characteristics of a welding base, a welding auxiliary cover plate, a welding cover plate and a welding fixing plate which are matched according to the structure of the bipolar plate and a welding path to be welded on the bipolar plate;
(2) positioning the bipolar plate on a welding base at a loading position, conveying the welding base and the bipolar plate to the position below a position to be welded through a guide conveying device on a welding rack, lifting the welding base and the bipolar plate to the position to be welded by a lifting device, enabling the welding base to be abutted against an auxiliary welding cover plate, and disconnecting the electromagnetic adsorption of a first electromagnetic force generating device on the welding base;
(3) the welding fixing plate is turned over, so that the welding cover plate fixed on the welding fixing plate through electromagnetic adsorption is turned over to the position right above the position to be welded synchronously, then the welding fixing plate cuts off the electromagnetic adsorption of the second electromagnetic force generating device to release the welding cover plate, the welding base fixes the welding cover plate through restoring the electromagnetic adsorption of the first electromagnetic force generating device, and laser is used for welding the bipolar plate through the welding cover plate;
(4) after laser welding of the bipolar plate is completed, the welding base releases the welding cover plate by cutting off electromagnetic adsorption of the first electromagnetic force generating device, the welding fixing plate recovers electromagnetic adsorption of the second electromagnetic force generating device to fix the welding cover plate, and the bipolar plate and the welding base move to a discharging position through the guide conveying device.
7. A processing method of a fuel cell bipolar plate laser welding electromagnetic adsorption clamping device according to claim 6, characterized in that in the step (2), when the guide conveying device conveys the welding base and the bipolar plate to be just below the position to be welded, the guide conveying device stops.
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| CN201810404283.4A CN108637476B (en) | 2018-04-28 | 2018-04-28 | Laser welding electromagnetic adsorption clamping device of fuel cell bipolar plate and processing method |
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| CN201810404283.4A CN108637476B (en) | 2018-04-28 | 2018-04-28 | Laser welding electromagnetic adsorption clamping device of fuel cell bipolar plate and processing method |
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| CN111318803B (en) * | 2020-02-20 | 2022-05-24 | 浙江锋源氢能科技有限公司 | Heat dissipation device and welding method of metal bipolar plate |
| AT525467B1 (en) * | 2021-09-27 | 2023-10-15 | Andritz Soutec Ag | METHOD AND DEVICE FOR LASER WELDING OF PLATE-SHAPED WORKPIECES |
| AT525466B1 (en) * | 2021-09-27 | 2023-11-15 | Andritz Soutec Ag | DEVICE AND METHOD FOR LASER WELDING STEEL PLATES |
| CN114682909B (en) * | 2022-05-13 | 2022-09-09 | 北京开元新能科技有限公司 | Bipolar plate welding set |
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