Production equipment for fuel cell stacks

Abstract

The present invention provides a production device for a fuel cell stack, comprising: a first conveying device having a feeding end and a discharging end, the first conveying device being used for conveying a first jig; a first loading device; a second loading device; a first transfer manipulator; a third loading device, a second screen printing device laminates a second adhesive layer on a second gasket substrate to obtain a second gasket structure; a second transfer manipulator is movably arranged between a third conveying device and the first conveying device, and the reverse side of the single-sided gasket bipolar plate is bonded to the second gasket structure through the second transfer manipulator to obtain a double-sided gasket bipolar plate, and the reverse side of the single-sided gasket bipolar plate is the surface of the single-sided gasket bipolar plate where the first gasket structure is not provided. The technical solution of the present application effectively solves the problems of poor process accuracy and low production efficiency in the related art of using manual bonding to bond fuel cell bipolar plates and gaskets.

Description

Technical Field

[0001] The present invention relates to the field of fuel cell manufacturing, and more particularly, to a production device for a fuel cell stack. Background Art

[0002] A fuel cell stack is formed by stacking multiple single cells composed of bipolar plates and membrane electrode assemblies, so as to achieve high-power output of the fuel cell stack. Each single cell contains a hydrogen chamber, an air chamber, and a coolant chamber. To ensure the normal operation of the fuel cell stack, the sealing of the hydrogen chamber, air chamber, and coolant chamber in the fuel cell stack is crucial. The coolant chamber in the fuel cell bipolar plate is generally sealed by welding, and the hydrogen chamber and air chamber are generally sealed by bonding a sealing gasket. The main sealing gaskets used in existing fuel cell stacks are fluororubber, silicone rubber, and EPDM (ethylene propylene diene monomer). The common bonding method of the sealing gasket is to spray a moisture-curing glue with a polarity similar to that of the sealing gasket into the sealing groove of the bipolar plate by a spraying machine, then manually place the sealing gasket into the sealing groove, and finally perform moisture curing.

[0003] The above method of manually bonding the fuel cell bipolar plate and the sealing gasket has poor process accuracy and low production efficiency, and cannot meet the requirements of high sealing reliability and mass production of the fuel cell stack. Summary of the Invention

[0004] The main object of the present invention is to provide a production device for a fuel cell stack to solve the problems of poor process accuracy and low production efficiency in the related art of using manual bonding of fuel cell bipolar plates and sealing gaskets.

[0005] To achieve the above object, the present invention provides a production device for a fuel cell stack, comprising: a first conveying device having a feeding end and a discharging end, the first conveying device being used for conveying a first fixture; a first loading device located on one side of the feeding end of the first conveying device, the first loading device transferring a bipolar plate substrate above the first fixture; a second loading device arranged on one side of the first conveying device and downstream of the first loading device, the second loading device comprising a second conveying device and a first screen printing device arranged on one side of the second conveying device, the second conveying device being used for conveying a first gasket substrate, and the first screen printing device imprinting a first glue layer on the first gasket substrate to obtain a first gasket structure; a first transfer robot movably arranged between the second conveying device and the first conveying device, bonding the front surface of the bipolar plate substrate with the first gasket structure through the first transfer robot to obtain a single-sided gasket bipolar plate; a first flipping device arranged above the first conveying device and downstream of the first transfer robot, the first flipping device flipping the single-sided gasket bipolar plate with its front surface facing down to its front surface facing up, the front surface of the single-sided gasket bipolar plate being the surface of the single-sided gasket bipolar plate provided with the first gasket structure; a third loading device arranged on one side of the first conveying device and downstream of the first flipping device, the third loading device comprising a third conveying device and a second screen printing device arranged on one side of the third conveying device, the third conveying device being used for conveying a second gasket substrate, and the second screen printing device imprinting a second glue layer on the second gasket substrate to obtain a second gasket structure; a second transfer robot movably arranged between the third conveying device and the first conveying device, bonding the back surface of the single-sided gasket bipolar plate with the second gasket structure through the second transfer robot to obtain a double-sided gasket bipolar plate, the back surface of the single-sided gasket bipolar plate being the surface of the single-sided gasket bipolar plate not provided with the first gasket structure.

[0006] Further, the second feeding device further includes a second jig for carrying the first gasket substrate, and the second conveying device is used to convey the second jig carrying the first gasket substrate. The first screen printing device includes a frame, a jig gripping and separating mechanism, a screen printing platform, a CCD scanner, and a vision detection device. The jig gripping and separating mechanism is disposed on the frame in a liftable manner and above the second conveying device. The screen printing platform is movably disposed on the jig gripping and separating mechanism. The CCD scanner is disposed on the screen printing platform. The vision detection device is movably disposed above the second conveying device. The jig gripping and separating mechanism has a gripping and separating position for gripping the second jig from the second conveying device and a first placing position for placing the second jig above the second conveying device. The screen printing platform imprints the first glue layer on the first gasket substrate within the second jig. The second feeding device further includes a lifting device disposed on the other side of the first conveying device. The first flipping device is located downstream of the lifting device. The lifting device has a lifting position for lifting the first jig on the first conveying device from the first conveying device and a second placing position for placing the first jig on the first conveying device. The production equipment for the fuel cell stack further includes a first discharging device disposed on one side of the second conveying device and a jig transfer mechanism disposed above the second conveying device and the first discharging device. The jig transfer mechanism is used to transfer the second jig carrying the first gasket structure on the second conveying device to the first discharging device. The first transfer manipulator presses the bipolar plate substrate in the first jig on the lifting device above the first gasket structure in the second jig on the first discharging device to bond the front surface of the bipolar plate substrate to the first gasket structure together.

[0007] Further, the jig transfer mechanism includes a guide rail disposed above the second conveying device and the first discharging device, a transfer arm movably disposed on the guide rail, a first telescopic cylinder disposed at the end of the transfer arm, and a first suction cup disposed at the telescopic portion of the first telescopic cylinder. The second jig includes a first bottom plate, a plurality of first vertical rods spaced around the first bottom plate, and a jacking device disposed above the first bottom plate. Each first vertical rod passes through the first gasket substrate, and the jacking device can support the first gasket substrate.

[0008] Furthermore, the production equipment of the fuel cell stack further includes a front curing device and a back curing device. The front curing device is located between the first flipping device and the third feeding device. The front curing device covers the upper part of the first conveying device. The interior of the front curing device has a front curing space for curing the bonding part on the single-sided gasket bipolar plate. The first conveying device conveys the single-sided gasket bipolar plate through the front curing space for curing to obtain the front-cured single-sided gasket bipolar plate. The back curing device is located downstream of the second transfer manipulator. The back curing device covers the upper part of the first conveying device. The interior of the back curing device has a back curing space for curing the bonding part on the double-sided gasket bipolar plate. The first conveying device conveys the double-sided gasket bipolar plate through the back curing space for curing to obtain the back-cured double-sided gasket bipolar plate.

[0009] Furthermore, the front curing device includes a light curing machine, a first lifting device and a second lifting device respectively located upstream and downstream of the light curing machine. The light curing machine includes a lamp cover covering the upper part of the first conveying device and a plurality of fourth conveying devices passing through the lamp cover. The plurality of fourth conveying devices are arranged at intervals in the vertical direction. A first partition layer is formed between the lowermost fourth conveying device and a part of the first conveying device. A second partition layer is formed between two adjacent fourth conveying devices. A third partition layer is formed between the uppermost fourth conveying device and the top wall of the lamp cover. The first partition layer, the second partition layer and the third partition layer together form the front curing space. Both the first lifting device and the second lifting device can be lifted to positions corresponding to the first partition layer, the second partition layer and the third partition layer. Among them, both the first lifting device and the second lifting device include a first bracket located on one side of the first conveying device, a first support plate movably arranged up and down on the first bracket, and a fifth conveying device arranged on the first support plate. The conveying direction of the fifth conveying device is the same as the conveying direction of the first conveying device.

[0010] Further, the production equipment of the fuel cell stack further includes a second flipping device disposed above the first conveying device. The second flipping device is located between the second transfer manipulator and the reverse curing device. The second flipping device flips the reverse side of the double-sided gasket bipolar plate substrate after reverse curing from facing down to facing up. The reverse side of the double-sided gasket bipolar plate substrate is the surface of the double-sided gasket bipolar plate provided with the second sealing gasket structure; both the first flipping device and the second flipping device include a second telescopic cylinder and a third telescopic cylinder spaced apart on both sides of the first conveying device. The second telescopic cylinder and the third telescopic cylinder are both telescopically arranged in the vertical direction; both the first flipping device and the second flipping device further include a drive shaft rotatably disposed at the telescopic parts of the second telescopic cylinder and the third telescopic cylinder and a second suction cup disposed on the circumferential outer side of the drive shaft. The second suction cup is located between the second telescopic cylinder and the third telescopic cylinder. The drive shaft drives the second suction cup to rotate so that the suction nozzle of the second suction cup has a first grasping position facing upward and a second grasping position facing downward.

[0011] Further, the first loading device includes a first loading conveyor and a first carrier conveyed by the first loading conveyor. There are multiple bipolar plate substrates, and all the multiple bipolar plate substrates are placed in the first carrier. The first loading device further includes a third transfer manipulator. The third transfer manipulator places the bipolar plate substrate at the uppermost position in the first carrier above the first fixture on the first conveying device; the first carrier includes a second bottom plate, a plurality of second vertical rods spaced around the second bottom plate, and a third lifting device disposed above the second bottom plate. Each first vertical rod passes through a plurality of bipolar plate substrates, and the third lifting device supports the bipolar plate substrate at the lowermost position among the plurality of bipolar plate substrates.

[0012] Further, there are multiple first carriers, and the production equipment of the fuel cell stack further includes a second blanking device and a first transfer device. The second blanking device is arranged on one side of the first feeding device. The first transfer device corresponds to the discharging end of the first feeding device and the feeding end of the second blanking device. The second blanking device includes a first blanking conveyor device, and the first transfer device includes a first transfer conveyor device. The first transfer conveyor device is used to transfer the first carrier conveyed by the first feeding conveyor device above the first blanking conveyor device. The first feeding device further includes multiple first separator papers, and one first separator paper is placed between every two adjacent bipolar plate substrates. The production equipment of the fuel cell stack further includes a first separator paper transfer device arranged above the first feeding device and the second blanking device. The first separator paper transfer device includes a first vertical beam, a second vertical beam, a cross beam, a fourth telescopic cylinder, a synchronous belt and a third suction cup. The first vertical beam and the second vertical beam are located on both sides of the first feeding device and the second blanking device. The cross beam is connected to the top of the first vertical beam and the top of the second vertical beam. The fourth telescopic cylinder is movably arranged on the cross beam through the synchronous belt. The third suction cup is arranged on the telescopic part of the fourth telescopic cylinder. The third suction cup can transfer the first separator paper in the first carrier on the first feeding conveyor device to the first carrier on the first blanking conveyor device.

[0013] Further, the production equipment of the fuel cell stack further includes a fourth lifting device and an airtightness detection device located downstream of the reverse curing device. The fourth lifting device and the airtightness detection device are respectively arranged on both sides of the first conveying device. The fourth lifting device includes a second bracket arranged on one side of the first conveying device and a second supporting plate which is arranged on the second bracket in a liftable manner. The second supporting plate can be inserted into the break of the first conveying device. The airtightness detection device includes a third bracket, a lower die, an upper die, a rotating arm, a fourth suction cup and a fifth suction cup. The third bracket is arranged on the other side of the first conveying device. The lower die and the upper die are arranged on the third bracket at intervals. The upper die is movably arranged on the third bracket relative to the lower die. The rotating arm is rotatably arranged on the third bracket. The fourth suction cup and the fifth suction cup are respectively fixed at both ends of the rotating arm. The fourth suction cup has a third grasping position above the second supporting plate and a first releasing position above the lower die. The fifth suction cup has a fourth grasping position above the lower die and a second releasing position above the second supporting plate.

[0014] Further, the production equipment of the fuel cell stack further includes an appearance detection device and a fourth transfer manipulator located downstream of the airtight detection device. The appearance detection device and the fourth transfer manipulator are respectively arranged on both sides of the first conveying device. The appearance detection device includes a front picture acquisition machine and a back picture acquisition machine located on one side of the first conveying device. The fourth transfer manipulator is located on the other side of the first conveying device. The back picture acquisition machine is located downstream of the front picture acquisition machine and is lower than the front picture acquisition machine. The fourth transfer manipulator can grab the double-sided gasket bipolar plate after the back surface is cured and to be collected on the first conveying device to above the back picture acquisition machine. The airtight detection device is used to perform airtightness detection on the double-sided gasket bipolar plate after the back surface is cured and to be collected to obtain a qualified bipolar plate; the appearance detection device is used to perform appearance detection on the qualified bipolar plate to obtain a finished bipolar plate; the production equipment of the fuel cell stack further includes a fourth loading device, a third unloading device and a second transfer device located on one side of the output end of the first conveying device. The third unloading device is arranged on one side of the fourth loading device. The second transfer device corresponds to the discharging end of the fourth loading device and the feeding end of the third unloading device. The fourth loading device includes a second loading conveying device and a plurality of second carriers conveyed by the second loading conveying device. The third unloading device includes a second unloading conveying device. The second transfer device includes a second transfer conveying device. The second transfer conveying device is used to transfer the second carrier conveyed by the second loading conveying device to above the second unloading conveying device; the fourth transfer manipulator places the finished bipolar plate into the second carrier above the second transfer conveying device. The production equipment of the fuel cell stack further includes a second separator paper transfer device arranged above the fourth loading device and the third unloading device. Some of the second carriers conveyed by the second loading conveying device are provided with a plurality of second separator papers. The second separator paper transfer device can transfer the second separator papers in the second carriers on the second loading conveying device to above the finished bipolar plates in the second carriers on the second unloading conveying device, so that a plurality of finished bipolar plates and a plurality of second separator papers in the second carriers are alternately stacked in sequence from bottom to top.

[0015] Applying the technical solution of the present invention, the production equipment of the fuel cell stack includes: a first conveying device, a first feeding device, a second feeding device, a first transfer manipulator, a first flipping device, a third feeding device, and a second transfer manipulator. The first conveying device has a feeding end and a discharging end, and the first conveying device is used for conveying the first fixture. The first feeding device is located on one side of the feeding end of the first conveying device, and the first feeding device transfers the bipolar plate substrate above the first fixture. The second feeding device is arranged on one side of the first conveying device and is located downstream of the first feeding device. The second feeding device includes a second conveying device and a first screen printing device arranged on one side of the second conveying device. The second conveying device is used for conveying the first gasket substrate. The first screen printing device imprints the first adhesive layer on the first gasket substrate to obtain a first gasket structure. The first transfer manipulator is movably arranged between the second conveying device and the first conveying device, and the front surface of the bipolar plate substrate is bonded to the first gasket structure through the first transfer manipulator to obtain a single-sided gasket bipolar plate. The first flipping device is arranged above the first conveying device and is located downstream of the first transfer manipulator. The first flipping device flips the single-sided gasket bipolar plate with the front surface facing down to the front surface facing up, and the front surface of the single-sided gasket bipolar plate is the surface of the single-sided gasket bipolar plate provided with the first gasket structure. The third feeding device is arranged on one side of the first conveying device and is located downstream of the first flipping device. The third feeding device includes a third conveying device and a second screen printing device arranged on one side of the third conveying device. The third conveying device is used for conveying the second gasket substrate. The second screen printing device imprints the second adhesive layer on the second gasket substrate to obtain a second gasket structure. The second transfer manipulator is movably arranged between the third conveying device and the first conveying device. The back surface of the single-sided gasket bipolar plate is bonded to the second gasket structure through the second transfer manipulator to obtain a double-sided gasket bipolar plate, and the back surface of the single-sided gasket bipolar plate is the surface of the single-sided gasket bipolar plate not provided with the first gasket structure. The production process flow of the production equipment of the fuel cell stack is as follows: The first feeding device transfers the bipolar plate substrate above the first fixture of the first conveying device, and the first conveying device conveys the first fixture carrying the bipolar plate substrate to the second feeding device. The second conveying device of the second feeding device completes the feeding of the first gasket substrate, and the first screen printing device of the second feeding device obtains a first gasket structure by imprinting the first adhesive layer on the first gasket substrate. The first transfer manipulator bonds the front surface of the bipolar plate substrate to the first gasket structure to obtain a single-sided gasket bipolar plate, and then the first transfer manipulator transfers the single-sided gasket bipolar plate to the first conveying device. The first flipping device flips the single-sided gasket bipolar plate. The third conveying device of the third feeding device completes the feeding of the second gasket substrate, and the second screen printing device of the third feeding device obtains a second gasket structure by imprinting the second adhesive layer on the second gasket substrate.The second transfer manipulator bonds the single-sided gasket bipolar plate after flipping with the second gasket structure to obtain a double-sided gasket bipolar plate. In this way, through a series of production process flows of the above-mentioned fuel cell stack production equipment, the bonding of the bipolar plate substrate with the first gasket substrate and the second gasket substrate is realized, improving the process precision and production efficiency. Therefore, the technical solution of the present application effectively solves the problems of poor process precision and low production efficiency in the related art of using manual bonding of fuel cell bipolar plates and gaskets. Description of the Drawings

[0016] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A three-dimensional structural schematic diagram of an embodiment of a production equipment for a fuel cell stack according to the present invention is shown;

[0018] Figure 2 Shown is Figure 1 A partial enlarged view of part A of the production equipment for a fuel cell stack;

[0019] Figure 3 Shown is Figure 2 A partial enlarged view of part B of the production equipment for a fuel cell stack;

[0020] Figure 4 Shown is Figure 1 A three-dimensional structural schematic diagram of the first loading device, the first paper separating and transferring device, the second unloading device, and the first transferring device of the production equipment for a fuel cell stack;

[0021] Figure 5 Shown is Figure 1 A three-dimensional structural schematic diagram of the second loading device, the fixture transferring mechanism, the first transfer manipulator, and the first unloading device of the production equipment for a fuel cell stack;

[0022] Figure 6 Shown is Figure 1 A three-dimensional structural schematic diagram of the front curing device of the production equipment for a fuel cell stack;

[0023] Figure 7 Shown is Figure 1 A cross-sectional view of the front curing device of the production equipment for a fuel cell stack;

[0024] Figure 8 Shown is Figure 1 A three-dimensional structural schematic diagram of the third loading device and the second transfer manipulator of the production equipment for a fuel cell stack;

[0025] Figure 9 shows Figure 1 a three-dimensional structural schematic diagram of the reverse curing device of the production equipment of the fuel cell stack;

[0026] Figure 10 shows Figure 1 a three-dimensional structural schematic diagram of the fourth lifting device and the airtight detection device of the production equipment of the fuel cell stack;

[0027] Figure 11 shows Figure 1 a three-dimensional structural schematic diagram of the appearance detection device, the fourth transfer manipulator, the fourth loading device, the second transfer device, the second paper separating and transferring device, and the third unloading device of the production equipment of the fuel cell stack;

[0028] Figure 12 shows Figure 1 a three-dimensional structural schematic diagram of the first carrier of the production equipment of the fuel cell stack;

[0029] Figure 13 shows Figure 1 a three-dimensional structural schematic diagram of the second jig of the production equipment of the fuel cell stack.

[0030] Among them, the above-mentioned drawings include the following reference numerals:

[0031] 11. First conveying device; 101. First jig;

[0032] 12. First loading device; 121. First loading conveyor; 122. First carrier; 1221. Second bottom plate; 1222. Second vertical rod; 1223. Third lifting device; 123. Third transfer manipulator;

[0033] 13. First paper separating and transferring device; 131. First vertical beam; 132. Second vertical beam; 133. Cross beam; 134. Fourth telescopic cylinder; 135. Third suction cup;

[0034] 14. Second unloading device; 141. First unloading conveyor;

[0035] 15. First transfer device; 151. First transfer conveyor;

[0036] 16. Second loading device; 161. Second conveying device; 162. First screen printing device; 1621. Frame; 1622. Jig grasping and separating mechanism; 1623. Screen printing platform; 1624. CCD scanner; 1625. Visual detection device; 163. Second jig; 1631. First bottom plate; 1632. First vertical rod; 1633. Jacking device; 164. Lifting device;

[0037] 17. Fixture transfer mechanism; 171. Guide rail; 172. Transfer arm; 173. First telescopic cylinder; 174. First suction cup;

[0038] 18. First transfer manipulator;

[0039] 19. First blanking device;

[0040] 20. First flipping device; 201. Second telescopic cylinder; 202. Third telescopic cylinder; 203. Drive shaft; 204. Second suction cup;

[0041] 21. Front curing device; 211. Light curing machine; 2111. Lamp cover; 2112. Fourth conveying device; 212. First lifting device; 2121. First bracket; 2122. First pallet; 2123. Fifth conveying device; 213. Second lifting device; 214. Front curing space; 2141. First compartment; 2142. Second compartment; 2143. Third compartment;

[0042] 22. Second flipping device;

[0043] 23. Third loading device; 231. Third conveying device; 232. Second screen printing device;

[0044] 24. Second transfer manipulator;

[0045] 25. Back curing device;

[0046] 26. Fourth lifting device; 261. Second bracket; 262. Second pallet;

[0047] 27. Air tightness detection device; 271. Third bracket; 272. Lower mold; 273. Upper mold; 274. Rotating arm; 275. Fourth suction cup; 276. Fifth suction cup;

[0048] 28. Appearance detection device; 281. Front image acquisition machine; 282. Back image acquisition machine;

[0049] 29. Fourth transfer manipulator;

[0050] 30. Fourth loading device; 301. Second loading conveyor; 302. Second carrier;

[0051] 31. Second transfer device; 311. Second transfer conveyor;

[0052] 32. Second separator transfer device;

[0053] 33. Third blanking device; 331. Second blanking conveyor. Detailed implementation method

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way limits the present invention and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0055] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0056] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0057] As Figures 1 to 5As shown in the figure, the production equipment of the fuel cell stack in this embodiment includes: a first conveying device 11, a first feeding device 12, a second feeding device 16, a first transfer manipulator 18, a first flipping device 20, a third feeding device 23, and a second transfer manipulator 24. The first conveying device 11 has a feeding end and a discharging end, and the first conveying device 11 is used to convey the first jig 101. The first feeding device 12 is located on one side of the feeding end of the first conveying device 11, and the first feeding device 12 transfers the bipolar plate substrate above the first jig 101. The second feeding device 16 is arranged on one side of the first conveying device 11 and is located downstream of the first feeding device 12. The second feeding device 16 includes a second conveying device 161 and a first screen printing device 162 arranged on one side of the second conveying device 161. The second conveying device 161 is used to convey the first gasket substrate. The first screen printing device 162 imprints the first adhesive layer on the first gasket substrate to obtain a first gasket structure. The first transfer manipulator 18 is movably arranged between the second conveying device 161 and the first conveying device 11, and the front surface of the bipolar plate substrate is bonded to the first gasket structure through the first transfer manipulator 18 to obtain a single-sided gasket bipolar plate. The first flipping device 20 is arranged above the first conveying device 11 and is located downstream of the first transfer manipulator 18. The first flipping device 20 flips the single-sided gasket bipolar plate with the front surface facing down to the front surface facing up. The front surface of the single-sided gasket bipolar plate is the surface of the single-sided gasket bipolar plate provided with the first gasket structure. The third feeding device 23 is arranged on one side of the first conveying device 11 and is located downstream of the first flipping device 20. The third feeding device 23 includes a third conveying device 231 and a second screen printing device 232 arranged on one side of the third conveying device 231. The third conveying device 231 is used to convey the second gasket substrate. The second screen printing device 232 imprints the second adhesive layer on the second gasket substrate to obtain a second gasket structure. The second transfer manipulator 24 is movably arranged between the third conveying device 231 and the first conveying device 11. The back surface of the single-sided gasket bipolar plate is bonded to the second gasket structure through the second transfer manipulator 24 to obtain a double-sided gasket bipolar plate. The back surface of the single-sided gasket bipolar plate is the surface of the single-sided gasket bipolar plate not provided with the first gasket structure.

[0058] Applying the technical solution of this embodiment, the production equipment of the fuel cell stack includes: a first conveying device 11, a first feeding device 12, a second feeding device 16, a first transfer manipulator 18, a first flipping device 20, a third feeding device 23, and a second transfer manipulator 24. The first conveying device 11 has a feeding end and a discharging end, and the first conveying device 11 is used to convey the first fixture 101. The first feeding device 12 is located on one side of the feeding end of the first conveying device 11, and the first feeding device 12 transfers the bipolar plate substrate above the first fixture 101. The second feeding device 16 is arranged on one side of the first conveying device 11 and is located downstream of the first feeding device 12. The second feeding device 16 includes a second conveying device 161 and a first screen printing device 162 arranged on one side of the second conveying device 161. The second conveying device 161 is used to convey the first gasket substrate. The first screen printing device 162 imprints the first adhesive layer on the first gasket substrate to obtain a first gasket structure. The first transfer manipulator 18 is movably arranged between the second conveying device 161 and the first conveying device 11, and the front surface of the bipolar plate substrate is bonded to the first gasket structure through the first transfer manipulator 18 to obtain a single-sided gasket bipolar plate. The first flipping device 20 is arranged above the first conveying device 11 and is located downstream of the first transfer manipulator 18. The first flipping device 20 flips the single-sided gasket bipolar plate with its front surface facing down to its front surface facing up. The front surface of the single-sided gasket bipolar plate is the surface of the single-sided gasket bipolar plate provided with the first gasket structure. The third feeding device 23 is arranged on one side of the first conveying device 11 and is located downstream of the first flipping device 20. The third feeding device 23 includes a third conveying device 231 and a second screen printing device 232 arranged on one side of the third conveying device 231. The third conveying device 231 is used to convey the second gasket substrate. The second screen printing device 232 imprints the second adhesive layer on the second gasket substrate to obtain a second gasket structure. The second transfer manipulator 24 is movably arranged between the third conveying device 231 and the first conveying device 11. The back surface of the single-sided gasket bipolar plate is bonded to the second gasket structure through the second transfer manipulator 24 to obtain a double-sided gasket bipolar plate. The back surface of the single-sided gasket bipolar plate is the surface of the single-sided gasket bipolar plate not provided with the first gasket structure. The production process flow of the production equipment of the fuel cell stack is as follows: The first feeding device 12 transfers the bipolar plate substrate above the first fixture 101 of the first conveying device 11, and the first conveying device 11 conveys the first fixture 101 carrying the bipolar plate substrate to the second feeding device 16. The second conveying device 161 of the second feeding device 16 completes the feeding of the first gasket substrate, and the first screen printing device 162 of the second feeding device 16 obtains the first gasket structure by imprinting the first adhesive layer on the first gasket substrate.The first transfer manipulator 18 bonds the front side of the bipolar plate substrate to the first gasket structure to obtain a single-sided gasket bipolar plate. Then, the first transfer manipulator 18 transfers the single-sided gasket bipolar plate to the first conveying device 11. The first flipping device 20 flips the single-sided gasket bipolar plate. The third conveying device 231 of the third loading device 23 completes the loading of the second gasket substrate, and the second screen printing device 232 of the third loading device 23 obtains the second gasket structure by laminating the second adhesive layer on the second gasket substrate. The second transfer manipulator 24 bonds the flipped single-sided gasket bipolar plate to the second gasket structure to obtain a double-sided gasket bipolar plate. In this way, through a series of production process flows of the above fuel cell stack production equipment, the bonding of the bipolar plate substrate with the first gasket substrate and the second gasket substrate is realized, improving the process accuracy and production efficiency. Therefore, the technical solution of this embodiment effectively solves the problems of poor process accuracy and low production efficiency in the related art of using manual bonding to bond fuel cell bipolar plates and gaskets.

[0059] In this embodiment, the first conveying device 11 includes a conveying support frame, and a driving shaft and a driven shaft that are rotatably and spaced apart on the conveying support frame. The first conveying device 11 further includes a first conveyor belt sleeved on the first ends of the driving shaft and the driven shaft, and a second conveyor belt sleeved on the second ends of the driving shaft and the driven shaft. Among them, the driving shaft drives the first conveyor belt and the second conveyor belt to rotate synchronously.

[0060] As Figures 1 to 5As shown, the second feeding device 16 further includes a second fixture for carrying the first gasket substrate. The second conveying device 161 is used to convey the second fixture carrying the first gasket substrate to the first screen printing device 162. The first screen printing device 162 includes a frame 1621, a fixture gripping and separating mechanism 1622, a screen printing platform 1623, a CCD scanner 1624 and a vision detection device. Among them, the fixture gripping and separating mechanism 1622 grips and separates the second fixture carrying the second gasket substrate from the second conveying device 161 for screen printing operations. The CCD scanner 1624 can achieve high-precision alignment, quickly identify the placement deviation between the first gasket substrate and the first adhesive layer and perform automatic correction. After the automatic correction is completed, the first screen printing device 162 transfers the UV adhesive on the first adhesive layer to the first gasket substrate by means of imprinting to obtain the first gasket structure. And the imprinting pressure can be adjusted as needed, and the first adhesive layer can be adjusted according to the size and process requirements of the first gasket substrate. The vision detection device can detect the thickness, width and position accuracy of the printed adhesive line of the first adhesive layer. The fixture gripping and separating mechanism 1622 is disposed on the frame 1621 in a liftable manner and is located above the second conveying device 161. The screen printing platform 1623 is movably disposed on the fixture gripping and separating mechanism 1622. The CCD scanner 1624 is disposed on the screen printing platform 1623. The vision detection device is movably disposed above the second conveying device 161. The fixture gripping and separating mechanism 1622 has a gripping and separating position for gripping and separating the second fixture from the second conveying device 161 and a first placement position for placing the second fixture above the second conveying device 161. The screen printing platform 1623 imprints the first adhesive layer on the first gasket substrate in the second fixture. The second feeding device 16 further includes a lifting device 164 disposed on the other side of the first conveying device 11. The first flipping device 20 is located downstream of the lifting device 164. The lifting device 164 has a lifting position for lifting the first fixture 101 on the first conveying device 11 away from the first conveying device 11 and a second placement position for placing the first fixture 101 on the first conveying device 11. The production equipment of the fuel cell stack further includes a first discharging device 19 disposed on one side of the second conveying device 161 and a fixture transfer mechanism 17 disposed above the second conveying device 161 and the first discharging device 19. The fixture transfer mechanism 17 is used to transfer the second fixture carrying the first gasket structure on the second conveying device 161 to the first discharging device 19. The first transfer manipulator 18 presses the bipolar plate substrate in the first fixture 101 on the lifting device 164 above the first gasket structure in the second fixture on the first discharging device 19 to bond the front surface of the bipolar plate substrate to the first gasket structure.

[0061] In this embodiment, the first screen printing device 162 is used to bond the first sealing gasket substrate to the bipolar plate substrate. Compared with the spraying method in the related art, the width, thickness and position accuracy of the glue line can be more accurately controlled, which greatly improves the reliability of the bipolar plate sealing process.

[0062] like Figures 1 to 5 as well as Figure 13 As shown, the jig transfer mechanism 17 includes a guide rail 171 arranged above the second conveying device 161 and the first unloading device 19, a transfer arm 172 movably arranged on the guide rail 171, a first telescopic cylinder 173 arranged at the end of the transfer arm 172, and a first suction cup 174 arranged at the telescopic part of the first telescopic cylinder 173. The second jig includes a first base plate, a plurality of first vertical poles arranged at intervals around the first base plate, and a jacking device 1633 arranged above the first base plate, each first vertical pole is penetrated through the first sealing gasket matrix, and the jacking device 1633 can be supported on the first sealing gasket matrix. The number of second jigs can be adjusted according to the time required to produce a product, that is, adjusted according to the production rhythm. The second jig can be adjusted according to the shape of the first sealing gasket matrix, and is used to fix the position of the first sealing gasket matrix. The lifting device 1633 arranged at the bottom of the second jig can prevent the first sealing gasket from being unable to completely detach from the second jig due to dimensional accuracy defects, insufficient pressing force or getting stuck in the second jig, thereby preventing the first sealing gasket from being unable to detach from the second jig, thereby improving the fault tolerance and reliability of the bipolar plate sealing process.

[0063] It should be noted that in this embodiment, the second screen printing device 232 has the same structure as the first screen printing device 162. The first fixture 101 has the same structure as the second fixture, and both the first fixture 101 and the second fixture include a bipolar plate positioning device. The number of the first fixtures 101 can be adjusted according to the time required to produce one product, that is, adjusted according to the production beat. In this embodiment, when the fixture transfer mechanism 17 transfers the second fixture carrying the first gasket structure on the second conveying device 161 to the first blanking device 19, the lifting device 164 lifts the first fixture 101 carrying the bipolar plate, and the lifting device 164 is converted from the second placement position to the lifting position. When the lifting device 164 is in the lifting position, the first transfer manipulator 18 grabs the bipolar plate from the lifting device 164 and then transfers the bipolar plate above the first gasket structure in the second fixture on the first blanking device 19. The first transfer manipulator 18 further includes a CCD scanner 1624. The CCD scanner 1624 can achieve high-precision alignment, and can quickly identify the placement deviation between the first gasket structure and the bipolar plate and perform automatic correction, ensuring the positional accuracy of bonding. After the automatic correction is completed, the first transfer manipulator 18 bonds the bipolar plate to the first gasket structure by pressing to obtain a single-sided gasket bipolar plate. After the bonding between the bipolar plate and the first gasket structure is completed, the lifting device 1633 of the second fixture ejects the single-sided gasket bipolar plate from the second fixture, facilitating the first transfer manipulator 18 to eject the single-sided gasket bipolar plate from the second fixture. The first transfer manipulator 18 then places the single-sided gasket bipolar plate on the first flipping device 20. In this way, by using the method of buckling the bipolar plate on the first gasket structure for bonding, it can adapt to the first gasket structures with different cross-sectional shapes and prevent accuracy loss during the process of grasping and moving the first gasket structure.

[0064] As Figures 1 to 2 and Figures 6 to 9 shown, the production equipment of the fuel cell stack further includes a front curing device 21 and a back curing device 25. The front curing device 21 is located between the first flipping device 20 and the third feeding device 23, and the front curing device 21 covers the upper part of the first conveying device 11. The interior of the front curing device 21 has a front curing space 214 for curing the bonding part on the single-sided gasket bipolar plate. The first conveying device 11 conveys the single-sided gasket bipolar plate through the front curing space 214 for curing to obtain a front-cured single-sided gasket bipolar plate. The back curing device 25 is located downstream of the second transfer manipulator 24, and the back curing device 25 covers the upper part of the first conveying device 11. The interior of the back curing device 25 has a back curing space for curing the bonding part on the double-sided gasket bipolar plate. The first conveying device 11 conveys the double-sided gasket bipolar plate through the back curing space for curing to obtain a back-cured double-sided gasket bipolar plate.

[0065] As Figures 1 to 2 and Figures 6 to 9 shown, the front curing device 21 includes a light curing machine 211 and a first lifting device 212 and a second lifting device 213 located upstream and downstream of the light curing machine 211 respectively. The light curing machine 211 includes a lamp cover 2111 covering above the first conveying device 11 and a plurality of fourth conveying devices 2112 passing through the lamp cover 2111. The plurality of fourth conveying devices 2112 are arranged at intervals in the vertical direction. A first partition layer 2141 is formed between the lowermost fourth conveying device 2112 and a part of the first conveying device 11, a second partition layer 2142 is formed between two adjacent fourth conveying devices 2112, and a third partition layer 2143 is formed between the uppermost fourth conveying device 2112 and the top wall of the lamp cover 2111. The first partition layer 2141, the second partition layer 2142 and the third partition layer 2143 together form a front curing space 214. Both the first lifting device 212 and the second lifting device 213 can be lifted to positions corresponding to the position of the first partition layer 2141, the position corresponding to the second partition layer 2142, and the position corresponding to the third partition layer 2143. Among them, both the first lifting device 212 and the second lifting device 213 include a first bracket 2121 located on one side of the first conveying device 11, a first support plate 2122 movably arranged up and down on the first bracket 2121, and a fifth conveying device 2123 arranged on the first support plate 2122. The conveying direction of the fifth conveying device 2123 is the same as the conveying direction of the first conveying device 11.

[0066] It should be noted that the front curing device 21 is used for curing the first adhesive layer. In this embodiment, an ultraviolet light source is used to cure the first adhesive layer. The ultraviolet light sources of the first partition layer 2141, the second partition layer 2142 and the third partition layer 2143 are all located above them. The first lifting device 212 is used to transfer the single-sided gasket bipolar plate to the first partition layer 2141, the second partition layer 2142 or the third partition layer 2143. And, the number of partition layers can be adjusted according to the time required to produce one product, that is, adjusted according to the production beat.

[0067] It should be noted that both the first adhesive layer and the second adhesive layer are preferably UV adhesives (i.e., ultraviolet light-curing adhesives). By using UV adhesives and an ultraviolet light source curing device, the curing time of the traditional heat and humidity curing type adhesive, which is in hours, is improved to minutes or even seconds, which is more suitable for the automatic device for bipolar plate sealing treatment, and greatly improves the production beat.

[0068] It should be noted that the structures of the second conveying device 161, the third conveying device 231, the fourth conveying device 2112, the fifth conveying device 2123 and the first conveying device 11 are the same.

[0069] As Figures 1 to 5As shown, the production equipment of the fuel cell stack also includes a second flipping device 22 arranged above the first conveying device 11. The second flipping device 22 is located between the second transfer manipulator 24 and the reverse curing device 25. The second flipping device 22 flips the reverse side of the double-sided gasket bipolar plate substrate after the reverse side is cured downward to the reverse side of the double-sided gasket bipolar plate substrate after the reverse side is cured upward. The reverse side of the double-sided gasket bipolar plate substrate is the surface of the double-sided gasket bipolar plate provided with a second sealing gasket structure. The first flipping device 20 and the second flipping device 22 both include a second telescopic cylinder 201 and a third telescopic cylinder 202 arranged at intervals on both sides of the first conveying device 11, and the second telescopic cylinder 201 and the third telescopic cylinder 202 are both telescopically arranged in the up and down directions. The first flipping device 20 and the second flipping device 22 both also include a drive shaft 203 on which the telescopic parts of the second telescopic cylinder 201 and the telescopic parts of the third telescopic cylinder 202 are rotatably arranged, and a second suction cup 204 arranged on the circumferential outer side of the drive shaft 203. The second suction cup 204 is located between the second telescopic cylinder 201 and the third telescopic cylinder 202 , and the driving shaft 203 drives the second suction cup 204 to rotate so that the suction nozzle of the second suction cup 204 has a first grasping position facing upward and a second grasping position facing downward.

[0070] like Figures 1 to 5 as well as Figure 12 As shown, the first loading device 12 includes a first loading conveyor 121 and a first carrier 122 used for conveying by the first loading conveyor 121. There are multiple bipolar plate substrates, and the multiple bipolar plate substrates are placed in the first carrier 122. The first loading device 12 also includes a third transfer robot 123, and the third transfer robot 123 places the bipolar plate substrate located at the top in the first carrier 122 above the first fixture 101 on the first conveying device 11. The first carrier 122 includes a second bottom plate 1221, a plurality of second vertical rods 1222 arranged around the second bottom plate 1221 at intervals, and a third lifting device 1223 arranged above the second bottom plate 1221, each second vertical rod 1222 is penetrated through multiple bipolar plate substrates, and the third lifting device 1223 supports the bipolar plate substrate located at the bottom among the multiple bipolar plate substrates. The number of the first carrier 122 can be adjusted according to the time required to produce a product, that is, adjusted according to the production rhythm. The first carrier 122 can be adjusted according to the shape of the bipolar plate substrate and is used to fix the position of the bipolar plate substrate. The third lifting device 1223 arranged at the bottom of the first carrier 122 can prevent the bipolar plate substrate from being unable to completely detach from the first carrier 122 due to dimensional accuracy defects, insufficient pressing force or being stuck in the first carrier 122, thereby preventing the bipolar plate from being unable to detach from the first carrier 122 and improving the fault tolerance and reliability of the bipolar plate sealing process.

[0071] like Figures 1 to 5As shown, there are multiple first carriers 122. The production equipment of the fuel cell stack further includes a second blanking device 14 and a first transfer device 15. The second blanking device 14 is arranged on one side of the first loading device 12. The first transfer device 15 corresponds to the discharge end of the first loading device 12 and the feed end of the second blanking device 14. The second blanking device 14 includes a first blanking conveyor 141. The first transfer device 15 includes a first transfer conveyor 151, and the first transfer conveyor 151 is used to transfer the first carrier 122 conveyed by the first loading conveyor 121 above the first blanking conveyor 141. The first loading device 12 further includes multiple first separator papers, and one first separator paper is placed between every two adjacent bipolar plate substrates. The production equipment of the fuel cell stack further includes a first separator paper transfer device 13 arranged above the first loading device 12 and the second blanking device 14. The first separator paper transfer device 13 includes a first vertical beam 131, a second vertical beam 132, a cross beam 133, a fourth telescopic cylinder 134, a synchronous belt and a third suction cup 135. The first vertical beam 131 and the second vertical beam 132 are located on both sides of the first loading device 12 and the second blanking device 14. The cross beam 133 is connected to the top of the first vertical beam 131 and the top of the second vertical beam 132. The fourth telescopic cylinder 134 is movably arranged on the cross beam 133 through the synchronous belt. The third suction cup 135 is arranged on the telescopic part of the fourth telescopic cylinder 134, and the third suction cup 135 can transfer the first separator paper in the first carrier 122 on the first loading conveyor 121 to the first carrier 122 on the first blanking conveyor 141.

[0072] In this embodiment, the first carrier 122 stores the bipolar plate substrates in the way of magazine plus separator paper. An independent above-mentioned third lifting device 1223 is arranged at the loading position of the first carrier 122. The first carrier 122 is transferred by the first loading conveyor 121 to the discharge end of the first loading device 12. The third lifting device 1223 lifts the uppermost bipolar plate substrate to the same height as the position where the third transfer manipulator 123 can suck, without being affected by the thickness and quantity of the bipolar plate substrates. Controlled by the third lifting device 1223, the third lifting device 1223 lifts the uppermost bipolar plate substrate to the same height as the position where the third transfer manipulator 123 can suck, saving the stacking cycle time. Among them, the structure of the second conveying device 161 is the same as that of the first conveying device 11.

[0073] In this embodiment, the first transfer device 15 uses the above-mentioned fourth telescopic cylinder 134 and synchronous belt to transfer the empty first carrier 122. The fourth telescopic cylinder 134 is preferably a rodless cylinder. The first separator transfer device 13 further includes a servo motor, and the first separator transfer device 13 is used to transfer the separator. The third lifting device 1223 of the first carrier 122 enables the third transfer manipulator 123 to transfer the uppermost bipolar plate substrate on the first carrier 122 to the first fixture 101 of the first conveying device 11 at the same height. The third transfer manipulator 123 further includes a CCD scanner 1624 and Bernoulli suction cups, wherein the CCD scanner 1624 can detect the appearance of the bipolar plate.

[0074] Such as Figures 1 to 5 And Figure 10As shown in the figure, the production equipment of the fuel cell stack further includes a fourth lifting device 26 and an airtightness detection device 27 located downstream of the reverse curing device 25. The fourth lifting device 26 and the airtightness detection device 27 are respectively arranged on both sides of the first conveying device 11. The fourth lifting device 26 includes a second bracket 261 arranged on one side of the first conveying device 11 and a second pallet 262 arranged on the second bracket 261 in a liftable manner. The second pallet 262 can be inserted into the break of the first conveying device 11. The airtightness detection device 27 includes a third bracket 271, a lower mold 272, an upper mold 273, a rotating arm 274, a fourth suction cup 275 and a fifth suction cup 276. The third bracket 271 is arranged on the other side of the first conveying device 11. The lower mold 272 and the upper mold 273 are arranged on the third bracket 271 at intervals. The upper mold 273 is arranged on the third bracket 271 in a movable manner relative to the lower mold 272. The rotating arm 274 is arranged on the third bracket 271 in a rotatable manner. The fourth suction cup 275 and the fifth suction cup 276 are respectively fixed at both ends of the rotating arm 274. The fourth suction cup 275 has a third grasping position above the second pallet 262 and a first releasing position above the lower mold 272. The fifth suction cup 276 has a fourth grasping position above the lower mold 272 and a second releasing position above the second pallet 262. The first conveying device 11 conveys the first jig 101 carrying the double-sided gasket bipolar plate to be subjected to airtightness detection to the fourth lifting device 26. The second pallet 262 of the fourth lifting device 26 is inserted into the break of the first conveying device 11, and the first jig 101 carrying the double-sided gasket bipolar plate to be subjected to airtightness detection is lifted to the same height as the lower mold 272 of the airtightness detection device 27, so as to facilitate the fourth suction cup 275 of the airtightness detection device 27 to grasp the double-sided gasket bipolar plate to be subjected to airtightness detection. While the fourth suction cup 275 of the airtightness detection device 27 grasps the double-sided gasket bipolar plate to be subjected to airtightness detection from the second pallet 262 of the fourth lifting device 26, the fifth suction cup 276 of the airtightness detection device 27 grasps the double-sided gasket bipolar plate that has been subjected to airtightness detection from the lower mold 272 of the airtightness detection device 27. The rotating arm 274 drives the fourth suction cup 275 and the fifth suction cup 276 to rotate 180° simultaneously, so as to exchange the positions of the double-sided gasket bipolar plate to be subjected to airtightness detection and the double-sided gasket bipolar plate that has been subjected to airtightness detection. The double-sided gasket bipolar plate that has been subjected to airtightness detection is placed on the second pallet 262 of the fourth lifting device 26 at the same height as the lower mold 272 of the airtightness detection device 27 again. At the same time, the double-sided gasket bipolar plate to be subjected to airtightness detection is placed on the lower mold 272 of the airtightness detection device 27, and the upper mold 273 automatically presses down. The upper mold 273 and the lower mold 272 form a closed detection environment to complete the airtightness detection of the double-sided gasket bipolar plate for pressure holding and gas leakage.

[0075] Moreover, the fourth lifting device 26 lifts the first jig 101 carrying the double-sided gasket bipolar plate from the first conveying device 11, which can avoid the blockage of the first conveying device 11 caused by multiple first jigs 101 being conveyed to the same position, ensuring the smooth operation of the equipment and the equipment cycle. The first conveying device 11 of this embodiment has multiple breaks, such as one break for the second support plate 262 to be inserted into the first conveying device 11, and two breaks for both the first lifting device 212 and the second lifting device 213 to be lifted to positions corresponding to the position of the first partition layer 2141.

[0076] It should be noted that there can be multiple airtight detection devices 27. In this embodiment, there are seven airtight detection devices 27. The number of airtight detection devices 27 can be adjusted according to the time required to produce one product, that is, adjusted according to the production cycle. Moreover, the airtight detection devices 27 are designed with independent airtight detection modules, ensuring that each airtight detection device 27 is independent of each other and not affected by the vibration of other airtight detection devices 27, improving the reliability and accuracy of detecting the airtightness of the double-sided gasket bipolar plate.

[0077] Such as Figures 1 to 5 And Figure 11As shown, the production equipment of the fuel cell stack further includes an appearance inspection device 28 and a fourth transfer manipulator 29 located downstream of the airtight inspection device 27. The double-sided gasket bipolar plates after passing the airtight inspection will be conveyed to the appearance inspection device 28. The appearance inspection device 28 and the fourth transfer manipulator 29 are respectively arranged on both sides of the first conveying device 11. The appearance inspection device 28 includes a front image acquisition machine 281 and a back image acquisition machine 282 located on one side of the first conveying device 11. The fourth transfer manipulator 29 is located on the other side of the first conveying device 11. The back image acquisition machine 282 is located downstream of the front image acquisition machine 281. The back image acquisition machine 282 is lower than the front image acquisition machine 281. The front image acquisition machine 281 and the back image acquisition machine 282 can display the images of the double-sided gasket bipolar plates collected in real time on the display, and the operator can determine whether the double-sided gasket bipolar plates are qualified by viewing the collected images and feedback to the system. The fourth transfer manipulator 29 can grab the double-sided gasket bipolar plates with the back surface cured and to be collected on the first conveying device 11 to above the back image acquisition machine 282. When the first conveying device 11 conveys the first jig 101 carrying the double-sided gasket bipolar plates with the back surface cured to below the front image acquisition machine 281, the front image acquisition machine 281 acquires images of the front surface of the double-sided gasket bipolar plate substrate with the back surface cured. After acquiring images of the front surface of the double-sided gasket bipolar plate substrate with the back surface cured, the fourth transfer manipulator 29 grabs the double-sided gasket bipolar plates with the back surface cured to above the back image acquisition machine 282 for back surface image acquisition. Moreover, the appearance inspection device 28 can be adjusted according to the production rhythm.

[0078] Further, the airtightness detection device 27 is used to detect the airtightness of the double-sided gasket bipolar plate after reverse curing to be collected, so as to obtain a qualified bipolar plate. The appearance detection device 28 is used to detect the appearance of the qualified bipolar plate to obtain a finished bipolar plate. The production equipment of the fuel cell stack further includes a fourth loading device 30, a third unloading device 33 and a second transfer device 31 located on one side of the output end of the first conveying device 11. The third unloading device 33 is arranged on one side of the fourth loading device 30. The second transfer device 31 corresponds to the discharging end of the fourth loading device 30 and the feeding end of the third unloading device 33. The fourth loading device 30 includes a second loading conveyor 301 and a plurality of second carriers 302 conveyed by the second loading conveyor 301. The third unloading device 33 includes a second unloading conveyor 331. The second transfer device 31 includes a second transfer conveyor 311, and the second transfer conveyor 311 is used to transfer the second carrier 302 conveyed by the second loading conveyor 301 above the second unloading conveyor 331. The fourth transfer manipulator 29 places the finished bipolar plate in the second carrier 302 above the second transfer conveyor 311. The production equipment of the fuel cell stack further includes a second separator transfer device 32 arranged above the fourth loading device 30 and the third unloading device 33. A plurality of second separators are placed in some of the second carriers 302 conveyed by the second loading conveyor 301. The second separator transfer device 32 can transfer the second separator in the second carrier 302 on the second loading conveyor 301 above the finished bipolar plate in the second carrier 302 on the second unloading conveyor 331, so that a plurality of finished bipolar plates and a plurality of second separators in the second carrier 302 are alternately stacked in sequence from bottom to top.

[0079] It should be noted that the implementation manner of "liftably" in this embodiment can be realized by the cooperation structure of a lead screw and a nut combined with the cooperation structure of a slide rail and a chute. The structures of the above-mentioned first loading conveyor 121, first unloading conveyor 141, second loading conveyor 301 and second unloading conveyor 331 are the same as the structure of the first conveying device.

[0080] It should be noted that the CCD scanner 1624 used in this embodiment is preferably a high-precision CCD alignment system, and the vision detection system is preferably a 3D camera vision detection system. They jointly detect the bipolar plate substrate, the first sealing gasket, the second sealing gasket and the glue line. In case of deviation, deviation correction is achieved through component linkage, or the qualified bipolar plates are classified and blanked according to the detection results, greatly improving the efficiency and qualification rate of the bipolar plate sealing process. In this embodiment, a unified transfer fixture tray is used throughout the process, that is, the structures of the first fixture 101, the second fixture, the first carrier 122 and the second carrier 302 are the same, ensuring the positioning function and material tracking throughout the process and facilitating the calculation of the production line beat. The production equipment of the fuel cell stack adopted in this embodiment improves the sealing consistency and reliability of the bipolar plate compared with the method of manually pasting gaskets, greatly improves the production efficiency of the bipolar plate sealing process, improves the existing fuel cell bipolar plate sealing process, and improves the process beat and the finished product rate of the bipolar plate sealing process.

[0081] It should be noted that in this embodiment, screen printing is performed on the surfaces of the first sealing gasket and the second sealing gasket, and the bonding of the metal bipolar plate is carried out. However, the present invention is not limited thereto. Screen printing can also be performed in the sealing groove of the bipolar plate substrate, and then the screen-printed bipolar plate substrate is turned over and pressed on the sealing gasket to complete the bonding. Moreover, the bipolar plate substrate can be a metal plate or a graphite plate.

[0082] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0083] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0084] In addition, it should be noted that the use of terms such as "first", "second" etc. to define components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings, and thus should not be construed as limiting the protection scope of the present invention.

[0085] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A production device for a fuel cell stack, characterized in that, Comprising: A first conveying device (11), having a feeding end and a discharging end, wherein the first conveying device (11) is used for conveying a first jig (101); A first loading device (12), located on one side of the feeding end of the first conveying device (11), and the first loading device (12) transfers a bipolar plate substrate above the first jig (101); A second loading device (16), arranged on one side of the first conveying device (11) and downstream of the first loading device (12), the second loading device (16) includes a second conveying device (161) and a first screen printing device (162) arranged on one side of the second conveying device (161), the second conveying device (161) is used for conveying a first gasket substrate, and the first screen printing device (162) imprints a first glue layer on the first gasket substrate to obtain a first gasket structure; A first transfer manipulator (18), movably arranged between the second conveying device (161) and the first conveying device (11), and the front surface of the bipolar plate substrate is bonded to the first gasket structure by the first transfer manipulator (18) to obtain a single-sided gasket bipolar plate; A first flipping device (20), arranged above the first conveying device (11) and downstream of the first transfer manipulator (18), the first flipping device (20) flips the single-sided gasket bipolar plate with its front surface facing down to its front surface facing up, and the front surface of the single-sided gasket bipolar plate is the surface of the single-sided gasket bipolar plate provided with the first gasket structure; A third loading device (23), arranged on one side of the first conveying device (11) and downstream of the first flipping device (20), the third loading device (23) includes a third conveying device (231) and a second screen printing device (232) arranged on one side of the third conveying device (231), the third conveying device (231) is used for conveying a second gasket substrate, and the second screen printing device (232) imprints a second glue layer on the second gasket substrate to obtain a second gasket structure; A second transfer manipulator (24), movably arranged between the third conveying device (231) and the first conveying device (11), and the back surface of the single-sided gasket bipolar plate is bonded to the second gasket structure by the second transfer manipulator (24) to obtain a double-sided gasket bipolar plate, and the back surface of the single-sided gasket bipolar plate is the surface of the single-sided gasket bipolar plate not provided with the first gasket structure.

2. The production equipment of the fuel cell stack according to claim 1, wherein The second feeding device (16) further includes a second fixture for carrying the first gasket substrate, and the second conveying device (161) is used to convey the second fixture carrying the first gasket substrate. The first screen printing device (162) includes a frame (1621), a fixture gripping and separating mechanism (1622), a screen printing platform (1623), a CCD scanner (1624) and a vision detection device. The fixture gripping and separating mechanism (1622) is arranged on the frame (1621) in a liftable manner and is located above the second conveying device (161). The screen printing platform (1623) is arranged on the fixture gripping and separating mechanism (1622) in a movable manner. The CCD scanner (1624) is arranged on the screen printing platform (1623). The vision detection device is arranged above the second conveying device (161) in a movable manner; The fixture gripping and separating mechanism (1622) has a gripping and separating position for gripping the second fixture away from the second conveying device (161) and a first placing position for placing the second fixture above the second conveying device (161). The screen printing platform (1623) imprints the first adhesive layer on the first gasket substrate in the second fixture; The second feeding device (16) further includes a lifting device (164) arranged on the other side of the first conveying device (11). The first flipping device (20) is located downstream of the lifting device (164). The lifting device (164) has a lifting position for lifting the first fixture (101) on the first conveying device (11) away from the first conveying device (11) and a second placing position for placing the first fixture (101) on the first conveying device (11); The production equipment of the fuel cell stack further includes a first discharging device (19) arranged on one side of the second conveying device (161) and a fixture transfer mechanism (17) arranged above the second conveying device (161) and the first discharging device (19). The fixture transfer mechanism (17) is used to transfer the second fixture carrying the first gasket structure on the second conveying device (161) to the first discharging device (19). The first transfer manipulator (18) presses the bipolar plate substrate in the first fixture (101) on the lifting device (164) above the first gasket structure in the second fixture on the first discharging device (19) to bond the front surface of the bipolar plate substrate to the first gasket structure together.

3. The production equipment of the fuel cell stack according to claim 2, wherein, The jig transfer mechanism (17) includes a guide rail (171) disposed above the second conveying device (161) and the first blanking device (19), a transfer arm (172) movably disposed on the guide rail (171), a first telescopic cylinder (173) disposed at the end of the transfer arm (172), and a first suction cup (174) disposed at the telescopic portion of the first telescopic cylinder (173); The second jig includes a first bottom plate, a plurality of first vertical rods spaced around the first bottom plate, and a lifting device (1633) disposed above the first bottom plate. Each of the first vertical rods passes through the first gasket matrix, and the lifting device (1633) can support the first gasket matrix.

4. The production equipment for a fuel cell stack according to claim 1, wherein The production equipment for a fuel cell stack further includes a front curing device (21) and a back curing device (25). The front curing device (21) is located between the first flipping device (20) and the third loading device (23). The front curing device (21) covers the first conveying device (11). The inside of the front curing device (21) has a front curing space (214) for curing the bonding portion on the single-sided gasket bipolar plate. The first conveying device (11) conveys the single-sided gasket bipolar plate through the front curing space (214) for curing to obtain the front-cured single-sided gasket bipolar plate; The back curing device (25) is located downstream of the second transfer manipulator (24). The back curing device (25) covers the first conveying device (11). The inside of the back curing device (25) has a back curing space for curing the bonding portion on the double-sided gasket bipolar plate. The first conveying device (11) conveys the double-sided gasket bipolar plate through the back curing space for curing to obtain the back-cured double-sided gasket bipolar plate.

5. The production equipment for a fuel cell stack according to claim 4, wherein The front curing device (21) includes a light curing machine (211), a first lifting device (212), and a second lifting device (213) respectively located upstream and downstream of the light curing machine (211). The light curing machine (211) includes a lamp cover (2111) covering the first conveying device (11) and a plurality of fourth conveying devices (2112) passing through the lamp cover (2111); A plurality of the fourth conveying devices (2112) are arranged at intervals in the vertical direction. A first partition layer (2141) is formed between the lowermost fourth conveying device (2112) and a part of the first conveying device (11). A second partition layer (2142) is formed between two adjacent fourth conveying devices (2112). A third partition layer (2143) is formed between the uppermost fourth conveying device (2112) and the top wall of the lamp cover (2111). The first partition layer (2141), the second partition layer (2142) and the third partition layer (2143) together form the front curing space (214). Both the first lifting device (212) and the second lifting device (213) can be lifted to positions corresponding to the position of the first partition layer (2141), the position corresponding to the second partition layer (2142) and the position corresponding to the third partition layer (2143); Wherein, both the first lifting device (212) and the second lifting device (213) include a first bracket (2121) located on one side of the first conveying device (11), a first support plate (2122) movably arranged up and down on the first bracket (2121), and a fifth conveying device (2123) arranged on the first support plate (2122). The conveying direction of the fifth conveying device (2123) is the same as the conveying direction of the first conveying device (11).

6. The production equipment of the fuel cell stack according to claim 4, wherein, The production equipment of the fuel cell stack further includes a second flipping device (22) arranged above the first conveying device (11). The second flipping device (22) is located between the second transfer manipulator (24) and the reverse curing device (25). The second flipping device (22) flips the reverse side of the double-sided gasket bipolar plate substrate after reverse curing from facing down to facing up. The reverse side of the double-sided gasket bipolar plate substrate is the surface of the double-sided gasket bipolar plate provided with the second sealing gasket structure; Both the first flipping device (20) and the second flipping device (22) include a second telescopic cylinder (201) and a third telescopic cylinder (202) arranged at intervals on both sides of the first conveying device (11). Both the second telescopic cylinder (201) and the third telescopic cylinder (202) are telescopically arranged in the vertical direction; Both the first flipping device (20) and the second flipping device (22) further include a drive shaft (203) rotatably provided with the telescopic parts of the second telescopic cylinder (201) and the third telescopic cylinder (202), and a second suction cup (204) provided on the circumferential outer side of the drive shaft (203). The second suction cup (204) is located between the second telescopic cylinder (201) and the third telescopic cylinder (202). The drive shaft (203) drives the second suction cup (204) to rotate so that the nozzle of the second suction cup (204) has a first grasping position facing upward and a second grasping position facing downward.

7. The production equipment for a fuel cell stack according to claim 1, wherein The first feeding device (12) includes a first feeding conveyor device (121) and a first carrier (122) conveyed by the first feeding conveyor device (121). There are multiple bipolar plate substrates, and multiple bipolar plate substrates are all placed in the first carrier (122). The first feeding device (12) further includes a third transfer manipulator (123). The third transfer manipulator (123) places the bipolar plate substrate at the uppermost position in the first carrier (122) above the first jig (101) on the first conveying device (11). The first carrier (122) includes a second bottom plate (1221), a plurality of second vertical rods (1222) spaced around the second bottom plate (1221), and a third lifting device (1223) provided above the second bottom plate (1221). Each second vertical rod (1222) passes through multiple bipolar plate substrates, and the third lifting device (1223) supports the bipolar plate substrate at the lowermost position among multiple bipolar plate substrates.

8. The production equipment for a fuel cell stack according to claim 7, wherein There are multiple first carriers (122). The production equipment for a fuel cell stack further includes a second discharging device (14) and a first transfer device (15). The second discharging device (14) is arranged on one side of the first feeding device (12). The first transfer device (15) corresponds to the discharging end of the first feeding device (12) and the feeding end of the second discharging device (14). The second discharging device (14) includes a first discharging conveyor device (141). The first transfer device (15) includes a first transfer conveyor device (151). The first transfer conveyor device (151) is used to transfer the first carrier (122) conveyed by the first feeding conveyor device (121) above the first discharging conveyor device (141). The first feeding device (12) further includes a plurality of first separator papers, and one first separator paper is placed between every two adjacent bipolar plate substrates. The production equipment of the fuel cell stack further includes a first separator paper transfer device (13) disposed above the first feeding device (12) and the second discharging device (14). The first separator paper transfer device (13) includes a first vertical beam (131), a second vertical beam (132), a cross beam (133), a fourth telescopic cylinder (134), a synchronous belt, and a third suction cup (135). The first vertical beam (131) and the second vertical beam (132) are located on both sides of the first feeding device (12) and the second discharging device (14). The cross beam (133) is connected to the tops of the first vertical beam (131) and the second vertical beam (132). The fourth telescopic cylinder (134) is movably disposed on the cross beam (133) through the synchronous belt. The third suction cup (135) is disposed on the telescopic part of the fourth telescopic cylinder (134). The third suction cup (135) can transfer the first separator paper in the first carrier (122) on the first feeding conveyor (121) to the first carrier (122) on the first discharging conveyor (141).

9. The production equipment of the fuel cell stack according to claim 4, wherein the production equipment of the fuel cell stack further includes a fourth lifting device (26) and an airtight detection device (27) located downstream of the reverse curing device (25). The fourth lifting device (26) and the airtight detection device (27) are respectively disposed on both sides of the first conveying device (11). The fourth lifting device (26) includes a second bracket (261) disposed on one side of the first conveying device (11) and a second support plate (262) movably disposed on the second bracket (261). The second support plate (262) can be inserted into the break of the first conveying device (11). The airtight detection device (27) includes a third support (271), a lower mold (272), an upper mold (273), a rotating arm (274), a fourth suction cup (275) and a fifth suction cup (276). The third support (271) is arranged on the other side of the first conveying device (11). The lower mold (272) and the upper mold (273) are arranged on the third support (271) at intervals. The upper mold (273) is movably arranged on the third support (271) relative to the lower mold (272). The rotating arm (274) is rotatably arranged on the third support (271). The fourth suction cup (275) and the fifth suction cup (276) are respectively fixed at both ends of the rotating arm (274). The fourth suction cup (275) has a third grasping position above the second support plate (262) and a first releasing position above the lower mold (272). The fifth suction cup (276) has a fourth grasping position above the lower mold (272) and a second releasing position above the second support plate (262).

10. The production equipment of the fuel cell stack according to claim 9, characterized in that The production equipment of the fuel cell stack further includes an appearance detection device (28) and a fourth transfer manipulator (29) located downstream of the airtight detection device (27). The appearance detection device (28) and the fourth transfer manipulator (29) are respectively arranged on both sides of the first conveying device (11). The appearance detection device (28) includes a front picture acquisition machine (281) and a back picture acquisition machine (282) located on one side of the first conveying device (11). The fourth transfer manipulator (29) is located on the other side of the first conveying device (11). The back picture acquisition machine (282) is located downstream of the front picture acquisition machine (281). The back picture acquisition machine (282) is lower than the front picture acquisition machine (281). The fourth transfer manipulator (29) can grasp the double-sided gasket bipolar plate after being cured on the back surface to be collected on the first conveying device (11) above the back picture acquisition machine (282). The airtight detection device (27) is used to perform airtightness detection on the double-sided gasket bipolar plate after being cured on the back surface to be collected to obtain a qualified bipolar plate; the appearance detection device (28) is used to perform appearance detection on the qualified bipolar plate to obtain a finished bipolar plate; The production equipment of the fuel cell stack further includes a fourth feeding device (30), a third discharging device (33) and a second transfer device (31) located on one side of the output end of the first conveying device (11). The third discharging device (33) is arranged on one side of the fourth feeding device (30). The second transfer device (31) corresponds to the discharging end of the fourth feeding device (30) and the feeding end of the third discharging device (33). The fourth feeding device (30) includes a second feeding conveyor (301) and a plurality of second carriers (302) conveyed by the second feeding conveyor (301). The third discharging device (33) includes a second discharging conveyor (331). The second transfer device (31) includes a second transfer conveyor (311). The second transfer conveyor (311) is configured to transfer the second carrier (302) conveyed by the second feeding conveyor (301) above the second discharging conveyor (331). The fourth transfer manipulator (29) places the finished bipolar plate in the second carrier (302) above the second transfer conveyor (311). The production equipment of the fuel cell stack further includes a second separator transfer device (32) disposed above the fourth feeding device (30) and the third discharging device (33). Some of the second carriers (302) conveyed by the second feeding conveyor (301) are placed with a plurality of second separators. The second separator transfer device (32) is capable of transferring the second separator in the second carrier (302) on the second feeding conveyor (301) above the finished bipolar plate in the second carrier (302) on the second discharging conveyor (331), so that a plurality of finished bipolar plates and a plurality of second separators in the second carrier (302) are alternately stacked in sequence from bottom to top.

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