CN212793537U

CN212793537U - Laser hybrid welding equipment for bipolar plate of hydrogen fuel cell

Info

Publication number: CN212793537U
Application number: CN202021500304.1U
Authority: CN
Inventors: 王岩
Original assignee: Suzhou Furunze Laser Technology Co ltd
Current assignee: Suzhou Furunze Laser Technology Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-03-26
Anticipated expiration: 2030-07-27

Abstract

The utility model discloses a bipolar plate laser hybrid welding equipment for hydrogen fuel cell, including the rack base, the protection cabinet, the cabinet door, the marble platform, first marble portal frame, first Y axle straight line module, fixed bipolar plate's tool, second Y axle straight line module, first X axle straight line module, Z axle straight line module, collimation laser welder head, second portal frame, second X axle straight line module, fiber laser, the laser scanning mirror that shakes, the laser scanning shakes the up end of the vertical downward laser perpendicular to bipolar plate on the tool that just jets out of light-emitting window of mirror. Compared with the prior art, the utility model discloses can realize bipolar plate's high efficiency processing, and can show the yield that improves bipolar plate laser welding.

Description

Laser hybrid welding equipment for bipolar plate of hydrogen fuel cell

Technical Field

The utility model relates to a cutting equipment technical field of printed circuit board, especially a bipolar plate laser hybrid welding equipment for hydrogen fuel cell.

Background

Bipolar plates are important components of hydrogen fuel cells and serve to collect current, distribute gases, and manage water. The bipolar plate is generally manufactured by forming an anode and a cathode flow field plate from a metal thin plate (0.1 mm in thickness) respectively, and then joining the two plates together to form a coolant flow channel therebetween. The sealing performance of the bipolar plate is required to be high, and if the sealing performance is not good, the reaction substance and the cooling liquid may leak, and the performance of the battery may be degraded or lost. The existing processing method for connecting the anode and the cathode adopts a welding mode, compared with other connecting processes, the laser welding has the advantages of small welding line, high quality, good sealing property, high efficiency, low process cost, easiness in realizing automation and the like, and is the most potential process in the process of producing bipolar plates in batches. Laser welding is mainly characterized in that laser beams are irradiated on the surface of a metal sheet to melt an upper layer sheet material, heat is transferred to a lower layer material through heat conduction, a molten pool is formed after the upper layer sheet material is melted, and a welding seam is formed through solidification. In the process, the welding areas of the upper and lower double-layer pole plates need to be tightly attached without gaps so as to ensure normal transmission of heat, and if gaps generate air layer separation, the problem of insufficient welding is easily caused.

At present, the laser welding of the hydrogen fuel cell bipolar plate is performed by using other laser equipment in the prior art, which generally adopts the laser welding of a collimation focusing type, and is generally the laser welding equipment of a semi-automatic single station. Welding a piece of 200 x 300mm bipolar plates typically takes more than 120 seconds. The production efficiency is low, and the bipolar plate is usually a stainless steel sheet with the thickness of 0.2mm, and the position of the bipolar plate needing laser welding usually covers the whole product surface, so that the bipolar plate is warped only by using a blank pressing mode, and the front surface is compressed to block a laser welding path, so that the commonly used bipolar plate clamping jig causes the welding yield to be low, namely only 60-80%. In addition, in the process of manually clamping the product, the laser assembly is in an idle state, so that the overall processing efficiency of the equipment is low.

Disclosure of Invention

The utility model discloses a solve current bipolar plate laser welding equipment inefficiency, the yield is poor, the extravagant problem of equipment productivity, provide a bipolar plate laser hybrid welding equipment for hydrogen fuel cell.

In order to achieve the purpose, the utility model is implemented according to the following technical scheme:

a laser composite welding device for a bipolar plate of a hydrogen fuel cell comprises a cabinet base and a protective cabinet arranged on the cabinet base, wherein a cabinet door is arranged on the front end face of the protective cabinet, a marble platform is fixed on the upper end face of the cabinet base in the protective cabinet, first marble portal frames are fixed on two sides of the upper end face of the marble platform, two first Y-axis linear modules which are parallel to each other are fixed on the upper end face of the marble platform between the two first marble portal frames, and a jig for fixing the bipolar plate is respectively fixed on the two first Y-axis linear modules and driven by the first Y-axis linear modules to move along the Y-axis direction; second Y-axis linear modules are fixed on the two first marble portal frames and are parallel to each other; a first X-axis linear module which is perpendicular to the first Y-axis linear module and the second Y-axis linear module is arranged between the two first marble portal frames, the two second Y-axis linear modules drive the first X-axis linear module to move along the Y-axis direction, a Z-axis linear module is fixed on the first X-axis linear module, the first X-axis linear module drives the Z-axis linear module to move along the X-axis direction, a collimation laser welding head is fixed on the Z-axis linear module, the Z-axis linear module drives the collimation laser welding head to move along the Z-axis direction, a light outlet of the collimation laser welding head faces vertically downwards, and emitted laser is perpendicular to the upper end face of the bipolar plate on the jig; the rear of the first X-axis linear module is provided with a second portal frame which is parallel to the first X-axis linear module and fixed on the upper end face of the marble platform, a second X-axis linear module is fixed on the second portal frame, a fiber laser is fixed on the second X-axis linear module and drives the fiber laser to move along the X-axis direction through the second X-axis linear module, a laser scanning galvanometer is fixed at the front end of a light outlet of the fiber laser, and the light outlet of the laser scanning galvanometer is vertical and downward and the emitted laser is perpendicular to the upper end face of the bipolar plate on the jig.

Further, the tool includes tool base, island briquetting, be equipped with the electro-magnet in the tool base, island briquetting sets up to two and symmetric distribution in tool base up end both sides, and the lower extreme of island briquetting is equipped with the reference column, island briquetting up end be equipped with the through-hole matched with stand of bipolar plate both sides, the through-hole cover of bipolar plate both sides is established on the stand, stand and through-hole clearance fit, tool base up end seted up with reference column matched with locating hole.

Further, the inner wall of the front end face of the protection cabinet is fixed with a camera monitor used for shooting videos in the protection cabinet in real time, a display is arranged on the front end face of the protection cabinet, and the display and the camera monitor are connected and used for receiving and displaying videos shot by the camera monitor.

Furthermore, the front end face of the protection cabinet is respectively provided with a button for controlling the camera monitor, the display, the first X-axis linear module, the second X-axis linear module, the first Y-axis linear module, the second Y-axis linear module, the Z-axis linear module, the collimation laser welding head, the fiber laser and the laser scanning galvanometer.

Preferably, a glass observation window is arranged on the cabinet door.

Preferably, the glass sight glass is of a push-pull type construction.

Compared with the prior art, the utility model adopts the jig with the electromagnet suction mode, ensures the pressing force of the bipolar plate to be welded, and simultaneously does not shield the welding position; meanwhile, a first Y-axis linear module is fixed on a marble platform base to drive parallel double Y-axis interactive feeding and discharging, an X-axis linear module, a Y-axis linear module and a Z-axis linear module are mounted on a first marble gantry frame to be combined, and a collimation laser welding head is mounted on a Z-axis mounting plane and used for welding key positions of bipolar plates; the back part of the marble platform is provided with a second portal frame, an X-axis linear module which can move left and right is fixed above the marble platform, and an integrated fiber laser using a laser scanning galvanometer is fixed on the X-axis linear module and used for welding non-critical positions of the bipolar plate, so that double-station feeding and discharging high-speed laser composite welding of the bipolar plate is realized.

Therefore, the utility model discloses can realize bipolar plate's high efficiency processing, and can show the yield that improves bipolar plate laser welding.

Drawings

Fig. 1 is a schematic diagram of the external structure of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the present invention.

Fig. 3 is a schematic diagram of an installation structure of the fiber laser according to the present invention.

Fig. 4 is a schematic structural view of the jig of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. The specific embodiments described herein are merely illustrative of the invention and do not limit the invention.

As shown in fig. 1-3, the bipolar plate laser hybrid welding device for a hydrogen fuel cell of the present embodiment includes a cabinet base 1 and a protection cabinet 2 disposed on the cabinet base 1, wherein a cabinet door 6 is disposed on a front end surface of the protection cabinet 2, and the cabinet door 6 is used for placing a bipolar plate to be welded on a fixture in the protection cabinet 2 and performing debugging operation; certainly, in order to facilitate the observation of the welding process in the protective cabinet 2 from the cabinet door 6, the cabinet door 6 is provided with a glass observation window 7 with a push-pull structure, specifically, an opening is formed in the front end face of the cabinet door 6, a slide rail is arranged in the opening, and the glass observation window 7 can slide in the slide rail, so that the glass observation window is a more conventional structure in the field and is not shown in detail in the figures, but is known by a person skilled in the art; a marble platform 8 is fixed on the upper end face of a cabinet base 1 in the protection cabinet 2, first marble portal frames 9 are fixed on two sides of the upper end face of the marble platform 8, two first Y-axis linear modules 11 are fixed on the upper end face of the marble platform 8 between the two first marble portal frames 9, the two first Y-axis linear modules 11 are parallel to each other, jigs 12 for fixing bipolar plates 20 are fixed on sliders of the two first Y-axis linear modules 11, the jigs 12 are driven by the first Y-axis linear modules 11 to move along the Y-axis direction, second Y-axis linear modules 10 are fixed on the two first marble portal frames 9, and the two second Y-axis linear modules 10 are parallel to each other; a first X-axis linear module 13 which is perpendicular to the second Y-axis linear modules 10 is arranged between the two first marble portal frames 9, the first X-axis linear module 13 is perpendicular to the two first Y-axis linear modules 11, the base of the first X-axis linear module 13 is fixed on the sliding blocks of the two second Y-axis linear modules 10, the two second Y-axis linear modules 10 drive the first X-axis linear module 13 to move along the Y-axis direction, a Z-axis linear module 14 is fixed on the sliding block of the first X-axis linear module 13, the first X-axis linear module 13 drives the Z-axis linear module 14 to move along the X-axis direction, a collimated laser welding head 15 is vertically fixed on the sliding block of the Z-axis linear module 14, the collimated laser welding head 15 is driven by the Z-axis linear module 14 to move along the Z-axis direction, a light outlet of the collimated laser welding head 15 is vertically downward, and emitted laser is perpendicular to the upper end face of the bipolar plate on the jig 12; a second portal frame 19 which is parallel to the first X-axis linear module 13 and fixed on the upper end face of the marble platform 8 is arranged behind the first X-axis linear module 13, a second X-axis linear module 18 is fixed on the second portal frame 19, a fiber laser 16 is fixed on a sliding block of the second X-axis linear module 18, the fiber laser 16 is driven by the second X-axis linear module 18 to move along the X-axis direction, a laser scanning galvanometer 17 is fixed at the front end of a light outlet of the fiber laser 16, the light outlet of the laser scanning galvanometer 17 faces vertically downwards, and emitted laser is perpendicular to the upper end face of the bipolar plate on the jig 12.

In this embodiment, two first Y-axis linear modules 11 parallel to each other are used as a dual-station feeding and discharging platform on the marble platform 8, a first X-axis linear module 13, a second Y-axis linear module 10 and a Z-axis linear module 14 are installed in front of the marble platform 8, a collimating laser welding head 15 is installed on a Z-axis installation plane and used for welding critical positions of the bipolar plate, a second portal frame 19 is installed at the rear of the marble platform 8, a second X-axis linear module 18 capable of moving left and right is fixed above the second X-axis linear module 18, and an integrated fiber laser using a laser scanning galvanometer is fixed on the second X-axis linear module 18 and used for welding non-critical positions of the bipolar plate. After the bipolar plates to be welded on the jigs on one of the first Y-axis linear modules 11 are welded, the bipolar plates to be welded on the jigs on the other one of the first Y-axis linear modules 11 can be quickly welded; therefore, the efficiency is improved, and meanwhile, the product machining precision is guaranteed.

In addition, in this embodiment, as shown in fig. 4, the jig 12 includes a jig base 1201 and island pressing blocks 1203, electromagnets are disposed in the jig base 1201, the island pressing blocks 1203 are disposed in two and symmetrically distributed on two sides of an upper end surface of the jig base 1201, positioning pillars 1204 are disposed at lower ends of the island pressing blocks 1203, vertical pillars 1205 matched with through holes 201 on two sides of the bipolar plate 20 are disposed on the upper end surface of the island pressing blocks 1203, the through holes 201 on two sides of the bipolar plate 20 are sleeved on the vertical pillars 1205, the vertical pillars 1205 are in clearance fit with the through holes 201, and positioning holes 1202 matched with the positioning pillars 1204 are disposed on the upper end surface of the jig base 1201. The pressing force of the bipolar plate 20 can be ensured through the attraction of the electromagnet in the jig base 1201 to the bipolar plate 20, meanwhile, the welding position of the bipolar plate 20 is not shielded, and the yield of the laser welding of the bipolar plate can be obviously improved.

It should be noted that, since the size of the bipolar plate is generally 200 × 300mm, and the requirement for precision is high during welding, the first X-axis linear module 13, the second X-axis linear module 18, the first Y-axis linear module 11, the second Y-axis linear module 10, and the Z-axis linear module 14 need high precision, and therefore, for example, a linear module with a precision of 0.05mm can be purchased directly on the market.

In some embodiments, a camera monitor 5 for shooting videos in the protection cabinet 2 in real time is fixed on the inner wall of the front end face of the protection cabinet 2, a display 4 is arranged on the front end face of the protection cabinet 2, the display 4 is connected with the camera monitor 5 and used for receiving and displaying videos shot by the camera monitor 5, so as to achieve visual positioning of a welding part of the bipolar plate to be welded, and then the first X-axis linear module 13, the second X-axis linear module 18, the first Y-axis linear module 11, the second Y-axis linear module 10 and the Z-axis linear module 14 can be operated outside the protection cabinet 2 to move, so that the key position and the non-key position of the bipolar plate to be welded are welded. Certainly, in order to facilitate the operation outside the protection cabinet 2, the front end surface of the protection cabinet 2 is respectively provided with a button 3 for controlling the camera monitor 5, the display 4, the first X-axis linear module 13, the second X-axis linear module 18, the first Y-axis linear module 11, the second Y-axis linear module 10, the Z-axis linear module 14, the collimated laser welding head 15, the fiber laser 16 and the laser scanning galvanometer 17.

When the bipolar plate laser composite welding equipment for the hydrogen fuel cell is used for carrying out laser welding on the bipolar plate, the specific operation process is as follows:

firstly, adjusting the laser focus emitted from the light outlet of a collimated laser welding head 15 by adjusting the up-and-down motion of a Z-axis linear module 14 by a button 3 outside a protection cabinet 2, after the laser focus of the collimated laser welding head 15 is adjusted, opening a cabinet door 6, fixing bipolar plates to be welded on jigs 12 on two first Y-axis linear modules 11 respectively, then closing the cabinet door 6, opening a camera monitor 5 and a display 4 by the button 3, displaying real-time video shot in the protection cabinet 2 on the display 4 by the camera monitor 5, welding the key position of the bipolar plate to be welded on one first Y-axis linear module 11, controlling the bipolar plate to be welded on the first Y-axis linear module 11 on the left side in the figure 2 to move back and forth along the Y-axis direction by the button 3 outside the protection cabinet 2, and controlling the bipolar plate to be welded on the first Y-axis linear module 11 on the left side in the figure to move back and forth along, The second Y-axis linear module 10 drives the first X-axis linear module 13 to move back and forth along the Y-axis direction, the first X-axis linear module 13 drives the collimation laser welding head 15 to move left and right along the X-axis direction, and the key positions of the bipolar plate on the left side can be welded by starting the collimation laser welding head 15 through the button 3; after the welding of the key position of the bipolar plate on the left side is finished, the bipolar plate on the left side is driven by the first Y-axis linear module on the left side to continuously move backwards along the Y-axis direction, at the moment, the optical fiber laser 16 and the laser scanning galvanometer 17 are started through the button 3 outside the protection cabinet 2, and the second X-axis linear module 18 is controlled through the button 3 to drive the optical fiber laser 16 and the laser scanning galvanometer 17 to move left and right along the X-axis direction so as to finish the welding of the non-key position of the bipolar plate on the left side; after the welding of the key positions of the bipolar plate on the left side is finished, the button 3 outside the protection cabinet 2 can control the first Y-axis linear module 11 on the right side to drive the bipolar plate to be welded on the first Y-axis linear module to move back and forth along the Y-axis direction, the first X-axis linear module 13 drives the alignment laser welding head 15 to move to the upper part of the bipolar plate on the right side along the X-axis direction, and the second Y-axis linear module 10 drives the first X-axis linear module 13 to move back and forth along the Y-axis direction, so that the welding of the key positions of the bipolar plate on the right side can be realized; after the welding of the key positions of the bipolar plate on the right side is finished, the bipolar plate on the left side is driven by the first Y-axis linear module on the right side to continuously move backwards along the Y-axis direction, at the moment, the optical fiber laser 16 and the laser scanning galvanometer 17 are started through the button 3 outside the protection cabinet 2, and the second X-axis linear module 18 is controlled through the button 3 to drive the optical fiber laser 16 and the laser scanning galvanometer 17 to move left and right along the X-axis direction so as to finish the welding of the non-key positions of the bipolar plate on the left side.

The technical scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, all according to the utility model discloses a technical scheme makes technical deformation, all falls into within the protection scope of the utility model.

Claims

1. The utility model provides a bipolar plate laser hybrid welding equipment for hydrogen fuel cell, includes rack base and the protection cabinet of setting on rack base, and the preceding terminal surface of protection cabinet is equipped with cabinet door, its characterized in that: a marble platform is fixed on the upper end face of a cabinet base in the protective cabinet, first marble portal frames are fixed on two sides of the upper end face of the marble platform, two first Y-axis linear modules which are parallel to each other are fixed on the upper end face of the marble platform between the two first marble portal frames, jigs for fixing bipolar plates are respectively fixed on the two first Y-axis linear modules, and the jigs are driven by the first Y-axis linear modules to move along the Y-axis direction; second Y-axis linear modules are fixed on the two first marble portal frames and are parallel to each other; a first X-axis linear module which is perpendicular to the first Y-axis linear module and the second Y-axis linear module is arranged between the two first marble portal frames, the two second Y-axis linear modules drive the first X-axis linear module to move along the Y-axis direction, a Z-axis linear module is fixed on the first X-axis linear module, the first X-axis linear module drives the Z-axis linear module to move along the X-axis direction, a collimation laser welding head is fixed on the Z-axis linear module, the Z-axis linear module drives the collimation laser welding head to move along the Z-axis direction, a light outlet of the collimation laser welding head faces vertically downwards, and emitted laser is perpendicular to the upper end face of the bipolar plate on the jig; the rear of the first X-axis linear module is provided with a second portal frame which is parallel to the first X-axis linear module and fixed on the upper end face of the marble platform, a second X-axis linear module is fixed on the second portal frame, a fiber laser is fixed on the second X-axis linear module and drives the fiber laser to move along the X-axis direction through the second X-axis linear module, a laser scanning galvanometer is fixed at the front end of a light outlet of the fiber laser, and the light outlet of the laser scanning galvanometer is vertical and downward and the emitted laser is perpendicular to the upper end face of the bipolar plate on the jig.

2. The bipolar plate laser hybrid welding apparatus for a hydrogen fuel cell according to claim 1, characterized in that: the tool includes tool base, island briquetting, be equipped with the electro-magnet in the tool base, island briquetting sets up to two and symmetric distribution in tool base up end both sides, and the lower extreme of island briquetting is equipped with the reference column, island briquetting up end be equipped with the through-hole matched with stand of bipolar plate both sides, the through-hole cover of bipolar plate both sides is established on the stand, stand and through-hole clearance fit, tool base up end has seted up with reference column matched with locating hole.

3. The bipolar plate laser hybrid welding apparatus for a hydrogen fuel cell according to claim 1, characterized in that: the protection cabinet is characterized in that a camera monitor used for shooting videos in the protection cabinet in real time is fixed on the inner wall of the front end face of the protection cabinet, a display is arranged on the front end face of the protection cabinet, and the display and the camera monitor are connected and used for receiving and displaying videos shot by the camera monitor.

4. The bipolar plate laser hybrid welding apparatus for a hydrogen fuel cell according to claim 3, wherein: the front end face of the protection cabinet is respectively provided with a button for controlling the camera monitor, the display, the first X-axis linear module, the second X-axis linear module, the first Y-axis linear module, the second Y-axis linear module, the Z-axis linear module, the collimation laser welding head, the fiber laser and the laser scanning galvanometer.

5. The bipolar plate laser hybrid welding apparatus for a hydrogen fuel cell according to claim 1, characterized in that: and a glass observation window is arranged on the cabinet door.

6. The bipolar plate laser hybrid welding apparatus for a hydrogen fuel cell according to claim 5, wherein: the glass observation window is of a push-pull structure.