A production equipment for hydrogen fuel cell stack

Abstract

The present invention relates to the technical field of hydrogen fuel cell production, and specifically to a production device for a hydrogen fuel cell stack, including a synchronous stacking and handling device installed on the battery stack production device, the synchronous stacking and handling device including a bearing seat, a bipolar plate stacking device, a membrane electrode stacking device, a stable detaching device and a parallel feeding device, the bearing seat is used to limit the placement of the lower end plate, the bipolar plate stacking device and the membrane electrode stacking device are symmetrically installed on both sides of the bearing seat, the working end of the bipolar plate stacking device and the working end of the membrane electrode stacking device can be interlaced and assembled with each other, the stable detaching device is installed above the bearing seat, the stable detaching device is used to stabilize the stacked bipolar plates and membrane electrodes, and a plurality of parallel feeding devices are provided, and are all distributed on the sides of the bipolar plate stacking device and the membrane electrode stacking device. The present invention can effectively improve production efficiency and ensure production quality at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen fuel cell production, and in particular to a production device for a hydrogen fuel cell stack. Background Art

[0002] As the world pays more attention to clean energy and sustainable development, hydrogen fuel cell stacks, as an efficient and environmentally friendly energy conversion device, have broad development prospects. In the future, with the continuous advancement of technology and the reduction of costs, hydrogen fuel cell stacks are expected to be more widely used in new energy vehicles, fixed power stations, industrial electronics and other fields. At the same time, strengthening infrastructure construction and improving the industrial chain are also important directions to promote the development of hydrogen fuel cell stacks.

[0003] Chinese patent CN117790859B discloses an automated assembly production line for hydrogen fuel cell engines. It includes a frame, a compacting mechanism, a transporting mechanism, a screw assembly mechanism and a stack body. The compacting mechanism includes a compression plate that can be raised and lowered, and also includes a limit mechanism. The limit mechanism is installed directly below the compacting mechanism. The limit mechanism includes a friction drive assembly, a transmission assembly and a friction transmission plate. The friction transmission plate is slidably connected to the frame. The bottom of the friction transmission plate is at the same height as the top of the lower end plate. The top of the friction transmission plate is at the same height as the bottom of the upper end plate when not compressed. The transmission assembly is connected to the friction drive assembly. This equipment can quickly and automatically realize the assembly process of the stack body. Before compression, the ends of the bipolar plate and the membrane electrode are squeezed by the friction transmission plate to ensure that the bipolar plate and the membrane electrode are placed correctly before compression, and the assembly process of the locking screws can be automatically realized.

[0004] Although the above-mentioned device can automatically stack the upper end plate, bipolar plate, membrane electrode and lower end plate through the conveying mechanism, when stacking the bipolar plates and membrane electrodes, since the bipolar plates and membrane electrodes need to be stacked in multiple layers in an alternating manner, the existing conveying mechanism can only stack the bipolar plates and membrane electrodes in an alternating manner in sequence, resulting in low stacking efficiency, which greatly affects the production efficiency of the hydrogen fuel cell stack. Summary of the invention

[0005] In view of the above problems, a production device for a hydrogen fuel cell stack is provided, which can effectively improve production efficiency while ensuring production quality through a synchronous stacking and handling device.

[0006] In order to solve the problems of the prior art, the present invention provides a production equipment for a hydrogen fuel cell stack, including a synchronous stacking and handling device installed on the battery stack production equipment, the synchronous stacking and handling device including a bearing seat, a bipolar plate stacking device, a membrane electrode stacking device, a stabilizing detaching device and a parallel feeding device, the bearing seat is used to limit the placement of the lower end plate, the bipolar plate stacking device and the membrane electrode stacking device are symmetrically installed on both sides of the bearing seat, the working end of the bipolar plate stacking device and the working end of the membrane electrode stacking device can be interlaced and assembled with each other, the bipolar plate stacking device is used to synchronously stack and place multiple layers of bipolar plates, the membrane electrode stacking device is used to synchronously stack and place multiple layers of membrane electrodes, the stabilizing detaching device is installed above the bearing seat, the stabilizing detaching device is used to stabilize and limit the stacked bipolar plates and membrane electrodes, and a plurality of parallel feeding devices are provided, and are all distributed on the sides of the bipolar plate stacking device and the membrane electrode stacking device.

[0007] Preferably, the bipolar plate stacking device includes a first movable adjustment platform installed beside the supporting seat, the movable end of the first movable adjustment platform is installed with a first mounting frame, the inner wall of the first mounting frame is provided with a first through-slot, the interior of the first mounting frame is symmetrically provided with a plurality of first limit mounting rails distributed at equal intervals, adjacent portions of the plurality of first limit mounting rails are provided with a first splicing rail, a first synchronous support device is installed in the first limit mounting rail, and the first synchronous support device is used for limiting and supporting the bipolar plate.

[0008] Preferably, the first synchronous support device includes a plurality of limit support bars distributed in the first limit mounting rail, one end of the limit support bar extends outward through the first limit mounting rail, the first synchronous support device also includes a plurality of synchronous spaced push plates, a plurality of spaced push grooves are provided on the synchronous spaced push plates, the spaced push grooves have different lengths, the plurality of spaced push grooves correspond one to one with the plurality of limit support bars, the spaced push grooves are slidably connected with one end of the limit support bar extending outward, the first synchronous support device also includes a first linear drive installed on the side of the first mounting frame, a connecting block is installed at the output end of the first linear drive, and connecting rods are installed between the connecting block and the plurality of synchronous spaced push plates.

[0009] Preferably, a flow chamber is provided inside the limiting support strip, and a plurality of adsorption holes are provided on the supporting surface of the limiting support strip.

[0010] Preferably, the first movable adjustment platform includes a rotating platform, a lifting platform is provided above the rotating platform, a guide column is installed between the lifting platform and the rotating platform, a second linear drive is also installed on the rotating platform, the output end of the second linear drive is connected to the lifting platform, a first ball screw slide is installed on the lifting platform, and the movable end of the first ball screw slide is connected to the first mounting frame.

[0011] Preferably, the membrane electrode stacking device includes a second movable adjustment platform installed beside the supporting seat, the movable end of the second movable adjustment platform is installed with a second mounting frame, the inner wall of the second mounting frame is provided with a second through-slot, the interior of the second mounting frame is symmetrically provided with a plurality of second limit mounting rails distributed at equal intervals, adjacent parts of the plurality of second limit mountings are provided with second splicing rails, the interior of the second limit mounting rails is installed with a second synchronous supporting device, the top of the second limit mounting rails are provided with inclined guide rails, the interior of the inclined guide rails are installed with limit pressing strips, and the outer side of the second mounting frame is also installed with a step pressing device for pushing the limit pressing strips to move at intervals.

[0012] Preferably, the abutting end of the limiting pressing strip is an elastic pressing strip, a pressure push block is provided on the side of the limiting pressing strip away from the elastic pressing strip, a plurality of elastic pushing columns are installed on the pressure push block, and a return spring is installed between the elastic pushing column and the abutting push block.

[0013] Preferably, the step pressing device includes a limit mounting frame installed on the side of the second mounting frame, a synchronous pushing frame is installed on the limit mounting frame, a step pushing tool is symmetrically installed on the synchronous pushing frame, a plurality of step pushing grooves are distributed inside the step pushing tool, and the step pushing grooves correspond one-to-one to the pressure pushing blocks. The step pressing device also includes a third linear drive that drives the synchronous pushing frame to move.

[0014] Preferably, the stable disengagement device includes a second ball screw slide arranged above the bearing seat, a fourth linear drive is installed on the second ball screw slide, a horizontal mounting platform is installed on the output end of the fourth linear drive, a plurality of rotating mounting blocks are symmetrically installed on the horizontal mounting platform, and the rotating mounting blocks are all provided with limiting strips. A first rotating drive for driving the rotating mounting blocks to rotate is also installed on the horizontal mounting platform.

[0015] Preferably, the parallel feeding device includes a linear conveyor, a horizontal conveying frame is installed at the discharge end of the linear conveyor, a plurality of rotating mounting shafts are installed on the horizontal conveying frame, rotating mounting wheels are installed on the rotating mounting shafts, anti-slip conductive belts are provided on the rotating mounting wheels, an infrared sensor is installed on the horizontal conveying frame, and the parallel feeding device also includes a second rotary drive for driving the rotating mounting shafts to rotate.

[0016] 1. The synchronous stacking and handling device adopted by the device realizes the synchronous and multi-layer stacking of bipolar plates and membrane electrodes, which completely changes the traditional staggered stacking method. This design makes the stacking process of bipolar plates and membrane electrodes more compact and efficient, significantly shortens the stacking cycle, and thus greatly improves the production efficiency of hydrogen fuel cell stacks.

[0017] 2. Through multiple parallel feeding devices controlled by automation, the continuous and accurate supply of bipolar plates and membrane electrodes is ensured, reducing manual intervention and waiting time, and further optimizing the overall production process.

[0018] 3. The working ends of the bipolar plate stacking device and the membrane electrode stacking device can be interlaced and assembled with each other. This innovative design ensures the precise matching and alignment between the bipolar plates and the membrane electrode during the stacking process, effectively avoiding performance problems caused by misalignment or deviation, thereby improving the overall performance and quality of the hydrogen fuel cell stack. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of a hydrogen fuel cell stack.

[0020] Figure 2 It is a three-dimensional schematic diagram of a hydrogen fuel cell stack production equipment.

[0021] Figure 3 The front view of a production device for a hydrogen fuel cell stack.

[0022] Figure 4 A three-dimensional diagram of a bipolar plate stacking device in a hydrogen fuel cell stack production device Figure 1 .

[0023] Figure 5 A three-dimensional diagram of a bipolar plate stacking device in a hydrogen fuel cell stack production device Figure 2 .

[0024] Figure 6 It is a three-dimensional schematic diagram of the partial structure of a bipolar plate stacking device in a hydrogen fuel cell stack production device.

[0025] Figure 7 yes Figure 6 A partial enlarged view of point A in the middle.

[0026] Figure 8 It is a three-dimensional schematic diagram of a membrane electrode stack device in a hydrogen fuel cell stack production equipment.

[0027] Fig. 9 yes Figure 8 A partial enlarged view of point B in the middle.

[0028] Fig.10 It is a three-dimensional schematic diagram of the partial structure of the membrane electrode stack device in the production equipment of a hydrogen fuel cell stack.

[0029] Fig.11 It is a three-dimensional schematic diagram of a limit pressing strip in a production device for a hydrogen fuel cell stack.

[0030] Fig.12 It is a three-dimensional schematic diagram of a step pusher in a production device for a hydrogen fuel cell stack.

[0031] Fig.13It is a three-dimensional schematic diagram of a stable disengagement device in a production device for a hydrogen fuel cell stack.

[0032] Fig.14 It is a three-dimensional schematic diagram of a parallel feeding device in a production device for a hydrogen fuel cell stack.

[0033] The accompanying drawings are marked as follows:

[0034] 1. Bearing seat; 2. Bipolar plate stacking device; 21. First mounting frame; 211. First limit mounting rail; 212. First splicing rail; 213. First through slot; 22. First synchronous support device; 221. First linear drive; 222. Connecting block; 223. Connecting rod; 224. Synchronous interval push plate; 2241. Interval push slot; 225. Limit support strip; 2251. Adsorption hole; 23. First mobile adjustment platform; 231. Rotating platform; 232. Guide column; 233. Lifting platform; 234. First ball screw slide; 235. Second linear drive; 3. Membrane electrode stacking device; 31. Second mounting frame; 311. Second limit mounting rail; 312. Second splicing rail; 313. Inclined guide rail; 314. Second through slot; 32. Second synchronous support device; 33. Limit pressing strip; 331. Elastic pressing strip; 332. Pressure push block; 333. Elastic pushing column; 34. Step pressing device; 341. Limit mounting frame; 342. Synchronous pushing frame; 343. Step pushing tool; 3431. Step pushing groove; 3432. Raised area; 3433. Recessed area; 344. Third linear drive; 35. Second movable adjustment table; 4. Stable disengagement device; 41. Second ball screw slide; 42. Fourth linear drive; 43. Horizontal mounting table; 44. Rotating mounting block; 45. Limiting insert strip; 46. First rotary drive; 5. Parallel feeding device; 51. Linear conveyor; 52. Horizontal conveying frame; 53. Rotating mounting shaft; 54. Anti-slip conductive belt; 55. Infrared sensor; 56. Second rotary drive; 6. Upper end plate; 7. Bipolar plate; 8. Membrane electrode; 9. Lower end plate. DETAILED DESCRIPTION

[0035] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] See also Figures 1 to 14As shown, a production equipment for a hydrogen fuel cell stack includes a synchronous stacking and handling device installed on the battery stack production equipment, the synchronous stacking and handling device includes a supporting seat 1, a bipolar plate stacking device 2, a membrane electrode stacking device 3, a stabilizing detaching device 4 and a parallel feeding device 5, the supporting seat 1 is used to limit the placement of a lower end plate 9, the bipolar plate stacking device 2 and the membrane electrode stacking device 3 are symmetrically installed on both sides of the supporting seat 1, the working end of the bipolar plate stacking device 2 and the working end of the membrane electrode stacking device 3 can be inserted and assembled with each other, the bipolar plate stacking device 2 is used to synchronously stack and place multiple layers of bipolar plates 7, the membrane electrode stacking device 3 is used to synchronously stack and place multiple layers of membrane electrodes 8, the stabilizing detaching device 4 is installed above the supporting seat 1, the stabilizing detaching device 4 is used to stabilize the stacked bipolar plates 7 and membrane electrodes 8, and a plurality of parallel feeding devices 5 are provided, and are distributed on the sides of the bipolar plate stacking device 2 and the membrane electrode stacking device 3.

[0037] When producing a hydrogen fuel cell stack, it is necessary to stack multiple layers of bipolar plates 7 and membrane electrode 8 on the lower end plate 9, and then limit and press the placed upper end plate 6, bipolar plates 7, membrane electrode 8 and lower end plate 9. After the limit and press, the upper end plate 6 and the lower end plate 9 are positioned and fixed by multiple screws, and the hydrogen fuel cell stack can be assembled.

[0038] A plurality of parallel feeding devices 5 are respectively located beside the bipolar plate stacking device 2 and the membrane electrode stacking device 3, and the bipolar plates 7 and the membrane electrode 8 are placed on their respective stacking devices in advance according to the production order. These devices are automatically controlled to ensure the continuity and accuracy of material supply. The support seat 1 is arranged in the working area of ​​the battery stack production equipment, and is used to accurately limit and fix the lower end plate 9. By placing the manipulator, the lower end plate 9 is accurately placed on the support seat 1, laying the foundation for the subsequent stacking operation. The bipolar plate stacking device 2 automatically limits the stacking of multiple layers of bipolar plates 7 to ensure the precise alignment between each layer of bipolar plates 7. The membrane electrode stacking device 3 is symmetrically installed with the bipolar plate stacking device 2, and the multiple layers of membrane electrodes 8 are stacked synchronously. The working ends of the two are designed to be interlaced and assembled with each other so as to achieve precise matching during the stacking process. After the bipolar plates 7 and the membrane electrodes 8 are ready, the working ends of the bipolar plate stacking device 2 and the membrane electrode stacking device 3 are interlaced and spliced ​​with each other, and the limit of the membrane electrode 8 is first released to make it fall onto the bipolar plate 7 that has been placed. Subsequently, the bipolar plate stacking device 2 releases the bipolar plates 7 one by one, so that they are stacked on the membrane electrode 8 in sequence to form an alternating stacking structure. After the bipolar plates 7 and the membrane electrode 8 are stacked, the working end of the stable detachment device 4 is quickly inserted into the two sides of the stack to provide additional support force to ensure the stability of the stack when it is separated from the stacking device. After the stable detachment device 4 stabilizes the stack, the bipolar plate stacking device 2 and the membrane electrode stacking device 3 are separated from the two sides of the stack, and the stable detachment device 4 is gradually separated from the stack. At this time, the bipolar plate stacking device 2 and the membrane electrode stacking device 3 are directly moved to the loading position of the parallel feeding device 5, and continue to receive new bipolar plates 7 and membrane electrodes 8 to prepare for the next round of stacking. In this process, the upper end plate 6 is accurately placed on the stacked bipolar plates 7 and membrane electrodes 8 by placing a manipulator. Subsequently, the battery stack production equipment applies a certain pressure to the upper end plate 6 to ensure that all components fit tightly. Finally, the upper end plate 6 and the lower end plate 9 are positioned and fixed by multiple screws to complete the assembly of the entire hydrogen fuel cell stack. Through the innovative design of the synchronous stacking and handling device, the efficient stacking of multi-layer bipolar plates 7 and membrane electrodes 8 is achieved, which greatly shortens the stacking time and improves production efficiency and product quality. At the same time, the automated control and precise coordination of each link ensure the stability and reliability of the production process.

[0039] See also Figures 2 to 6As shown, the bipolar plate stacking device 2 includes a first movable adjustment platform 23 installed next to the supporting seat 1, and a first mounting frame 21 is installed at the movable end of the first movable adjustment platform 23. The inner wall of the first mounting frame 21 is provided with a first through-slot 213, and the interior of the first mounting frame 21 is symmetrically provided with a plurality of first limiting mounting rails 211 distributed at equal intervals, and adjacent portions of the plurality of first limiting mounting rails 211 are provided with a first splicing rail 212, and a first synchronous support device 22 is installed in the first limiting mounting rail 211, and the first synchronous support device 22 is used for limiting and supporting the bipolar plate 7.

[0040] Before production starts, the first mobile adjustment platform 23 adjusts the first mounting frame 21 to the initial position according to a preset program or instruction to prepare for the stacking operation of the bipolar plates 7. The bipolar plates 7 are transported one by one to the top of the first mounting frame 21 through the parallel feeding device 5 or other automated conveying system, and are accurately placed on the first limit mounting rail 211. At this time, the first synchronous support device 22 is in an activated state, providing stable support for the bipolar plates 7. The first splicing rail 212 on the first mounting frame 21 is closely matched with the working end of the membrane electrode stacking device 3 to reserve space for the subsequent stacking of the membrane electrode 8.

[0041] When the bipolar plates 7 are stacked to a predetermined number of layers, the first mounting frame 21 of the bipolar plate stacking device 2 and the working end of the membrane electrode stacking device 3 are interlaced with each other, preparing for the stacking operation of the membrane electrode 8. The membrane electrode stacking device 3 releases the limit of the membrane electrode 8, allowing it to fall onto the bipolar plate 7. Then the first synchronous support device 22 releases the support in turn, and the bipolar plates 7 will fall in turn, so that the membrane electrode 8 and the bipolar plate 7 are stacked on each other. After the bipolar plates 7 and the membrane electrode 8 are stacked, the working end of the stable detachment device 4 is quickly inserted into the two sides of the stacking body to provide a limiting effect. Subsequently, the bipolar plate stacking device 2 and the membrane electrode stacking device 3 are detached from both sides of the stacking body. The first through-slot 213 on the first mounting frame 21 facilitates the intervention of the stable detachment device 4.

[0042] See also Figures 3 to 6As shown, the first synchronous support device 22 includes a plurality of limit support bars 225 distributed in the first limit mounting rail 211, one end of the limit support bar 225 extends outward through the first limit mounting rail 211, the first synchronous support device 22 also includes a plurality of synchronous spaced push plates 224, a plurality of spaced push grooves 2241 are provided on the synchronous spaced push plates 224, the spaced push grooves 2241 are of different lengths, the plurality of spaced push grooves 2241 correspond one to one with the plurality of limit support bars 225, the spaced push grooves 2241 are slidably connected with one end of the limit support bar 225 extending outward, the first synchronous support device 22 also includes a first linear driver 221 installed on the side of the first mounting frame 21, a connecting block 222 is installed at the output end of the first linear driver 221, and connecting rods 223 are installed between the connecting block 222 and the plurality of synchronous spaced push plates 224.

[0043] Before the stacking operation begins, the limiting support bar 225 is in an outwardly extended state, closely fitting and supporting the bipolar plate 7 to ensure its stability during transportation and positioning. When the bipolar plate 7 is transported to the top of the first mounting frame 21 by the parallel feeding device 5 and accurately placed at the position of the first limiting mounting rail 211, the first synchronous support device 22 remains activated to maintain support for the bipolar plate 7.

[0044] When the predetermined number of stacking layers of bipolar plates 7 is reached, the working ends of the bipolar plate stacking device 2 and the membrane electrode stacking device 3 are interlaced and spliced ​​with each other, and the limit of the membrane electrode 8 is first released to make it fall onto the bipolar plate 7 that has been placed. Subsequently, the bipolar plate stacking device 2 needs to release the bipolar plates 7 one by one. At this time, the first linear driver 221 receives the stacking instruction and starts working. The first linear driver 221 moves by pushing the connecting block 222, and the connecting block 222 then drives the synchronous interval push plate 224 to move synchronously along the predetermined trajectory through the connecting rod 223. Due to the different lengths, the interval push grooves 2241 on the synchronous interval push plate 224 will push each limit support bar 225 to shrink into the first limit mounting rail 211 in turn. As the limit support bars 225 shrink one by one, the originally supported bipolar plates 7 begin to fall one by one, realizing a stable stacking process. Since the shrinkage of the support bars is carried out in sequence, the stacking of the bipolar plates 7 is also carried out layer by layer, ensuring the stability and accuracy during the stacking process.

[0045] See also Figure 6 and Figure 7 As shown, a flow chamber is provided inside the limiting support bar 225 , and a plurality of adsorption holes 2251 are provided on the supporting surface of the limiting support bar 225 .

[0046] The support surface of the position-limiting support bar 225 is used to closely fit and support the bipolar plate 7, and by controlling the pressure change in the flow chamber, the adsorption holes 2251 are uniformly adsorbed on the surface of the bipolar plate 7. This adsorption effect can further enhance the fit between the bipolar plate 7 and the position-limiting support bar 225, and prevent sliding or offset during movement.

[0047] See also Figure 4 and Figure 5 As shown, the first movable adjustment platform 23 includes a rotating table 231, a lifting platform 233 is provided above the rotating table 231, a guide column 232 is installed between the lifting platform 233 and the rotating table 231, and a second linear drive 235 is also installed on the rotating table 231, and the output end of the second linear drive 235 is connected to the lifting platform 233, and a first ball screw slide 234 is installed on the lifting platform 233, and the movable end of the first ball screw slide 234 is connected to the first mounting frame 21.

[0048] The rotating table 231 is used to drive the lifting platform 233, the second linear drive 235 and the guide column 232 to rotate and adjust, the second linear drive 235 is used to push the lifting platform 233 to move up and down, the guide column 232 is used to ensure the stable lifting and lowering of the lifting platform 233, and the first ball screw slide 234 on the lifting platform 233 is used to drive the first mounting frame 21 to move horizontally and telescopically. The position of the first mounting frame 21 can be effectively and automatically moved and adjusted through the first movable adjustment platform 23, thereby improving the intelligence of the production equipment.

[0049] See also Figure 2 , Figure 8 and Fig. 9 As shown, the membrane electrode stacking device 3 includes a second movable adjustment platform 35 installed beside the supporting seat 1, and the movable end of the second movable adjustment platform 35 is installed with a second mounting frame 31, the inner wall of the second mounting frame 31 is provided with a second through-slot 314, and the interior of the second mounting frame 31 is symmetrically provided with a plurality of second limit mounting rails 311 distributed at equal intervals, and adjacent portions of the plurality of second limit mounting rails 311 are provided with second splicing rails 312, and the interior of the second limit mounting rails 311 is provided with a second synchronous supporting device 32, and the upper part of the second limit mounting rails 311 is provided with an inclined guide rail 313, and the interior of the inclined guide rails 313 is installed with a limit pressing strip 33, and the outer side of the second mounting frame 31 is also provided with a step pressing device 34 for pushing the limit pressing strip 33 to move at intervals.

[0050] The second movable adjustment platform 35 has the same structure as the first movable adjustment platform 23, and is used to move and adjust the position of the second mounting frame 31. The second synchronous support device 32 has the same structure as the first synchronous support device 22, and is used to limit the side of the membrane electrode 8. The second splicing rail 312 on the second mounting frame 31 is closely matched with the first splicing rail 212 on the first mounting frame 21, and the operation space is reserved for subsequent stacking. The second through-slot 314 of the second mounting frame 31 is convenient for the intervention of the stable detachment device 4.

[0051] Before production starts, the second movable adjustment table 35 adjusts the second mounting frame 31 to the initial position according to a preset program or instruction. This initial position ensures the accuracy and stability of the stacking operation of the membrane electrode 8. The parallel feeding device 5 transports the membrane electrode 8 one by one to the top of the second mounting frame 31, and accurately places it at the specified position of the second limit mounting rail 311. At this time, the bottoms on both sides of the membrane electrode 8 are respectively in contact with the second synchronous support device 32 to form a preliminary support. The step pressing device 34 starts to work, and it controls the limit pressing bar 33 to press one by one. The limit pressing bar 33 presses the membrane electrode 8 from above, and together with the second synchronous support device 32 below, clamps the membrane electrode 8 between the two. This clamping method ensures the stability and position accuracy of the membrane electrode 8 during the stacking process. When the multilayer membrane electrodes 8 are placed and clamped on the second mounting frame 31 one by one, they are ready to be stacked with the bipolar plate 7. After the bipolar plate stacking device 2 completes the stacking of the bipolar plates 7 and is ready, the membrane electrode stacking device 3 intersects with the working end of the bipolar plate stacking device 2. At this time, the membrane electrode stacking device 3 releases the limit of the membrane electrode 8, so that it falls onto the placed bipolar plate 7. Through precise coordination and control, the alternating stacking of the membrane electrode 8 and the bipolar plate 7 is achieved.

[0052] See also Fig. 9 and Fig.11 As shown, the abutting end of the limiting pressing strip 33 is an elastic pressing strip 331, and a pressure push block 332 is provided on the side of the limiting pressing strip 33 away from the elastic pressing strip 331, and a plurality of elastic pushing columns 333 are installed on the pressure push block 332, and a return spring is installed between the elastic pushing column 333 and the abutting push block.

[0053] The elastic pressing strip 331 enables the limiting pressing strip 33 to produce a certain elastic deformation when in contact with the membrane electrode 8, so as to adapt to membrane electrodes 8 of different thicknesses and materials. The elastic pressing strip 331 can not only effectively press the membrane electrode 8 to prevent it from shifting during the stacking process, but also absorb the impact force during the stacking process to a certain extent, protecting the membrane electrode 8 from damage. When the step pressing device 34 pushes the pressure push block 332 to move, the pressure will be stably transferred to the limiting pressing strip 33, and the elastic pushing column 333 will be squeezed and contracted when the pressure push block 332 is pushed to move. A reset spring is installed between the elastic pushing column 333 and the pressure push block 332, so that after the pressing is completed, the reset spring can quickly drive the limiting pressing strip 33 to return to the initial position, ready for the next pressing operation.

[0054] See also Figure 8 , Fig.10 and Fig.12 As shown, the step pressing device 34 includes a limiting mounting frame 341 installed on the side of the second mounting frame 31, a synchronous pushing frame 342 is installed on the limiting mounting frame 341, a step pushing tool 343 is symmetrically installed on the synchronous pushing frame 342, and a plurality of step pushing grooves 3431 are distributed inside the step pushing tool 343, and the step pushing grooves 3431 correspond one-to-one to the pressure pushing blocks 332. The step pressing device 34 also includes a third linear drive 344 that drives the synchronous pushing frame 342 to move.

[0055] The step pusher 343 is used to push the multiple pressure push blocks 332 at intervals, so as to better limit the position of the membrane electrode 8. The multiple step push grooves 3431 are provided with raised areas 3432 and recessed areas 3433 inside, and the positions of the raised areas 3432 of the step push grooves 3431 are different. The step push grooves 3431 are slidably connected with the pressure push blocks 332. The raised areas 3432 of the step push grooves 3431 are used to apply thrust to the pressure push blocks 332, and the recessed areas 3433 are used to provide a reset space for the pressure push blocks 332.

[0056] When it is necessary to press the membrane electrode 8, the third linear drive 344 is started to drive the synchronous pushing frame 342 to move forward along the preset trajectory. The movement of the synchronous pushing frame 342 drives the multiple step pushing tools 343 to move synchronously. Due to the design of the step pushing groove 3431 inside the step pushing tool 343, the raised area 3432 of each pushing groove contacts the corresponding pressure push block 332 in turn and applies thrust to it. Under the thrust of the raised area 3432 of the step pushing groove 3431, the pressure push block 332 drives the limiting pressing strip 33 to move toward the membrane electrode 8. At this time, the elastic pressing strip 331 will fit closely to the surface of the membrane electrode 8 to achieve effective pressing and limiting. The stepped design of the step pushing tool 343 allows multiple pressure push blocks 332 to be pushed at intervals, further enhancing the uniformity and stability of the pressing.

[0057] When the third linear drive 344 completes the preset stroke and the synchronous pushing frame 342 stops moving, the raised area 3432 of the step pushing tool 343 no longer applies thrust to the pressing push block 332. At this time, the return spring installed between the elastic pushing column 333 and the pressing push block 332 starts to play a role, quickly pushing the elastic pushing column 333 to return to its original position, thereby driving the limit pressing strip 33 to return to its original position.

[0058] See also Figure 2 and Fig.13 As shown, the stable disengagement device 4 includes a second ball screw slide 41 arranged above the bearing seat 1, a fourth linear drive 42 is installed on the second ball screw slide 41, a horizontal mounting platform 43 is installed on the output end of the fourth linear drive 42, a plurality of rotating mounting blocks 44 are symmetrically installed on the horizontal mounting platform 43, and the rotating mounting blocks 44 are all provided with limiting strips 45. A first rotating drive 46 for driving the rotating mounting blocks 44 to rotate is also installed on the horizontal mounting platform 43.

[0059] Before production starts, the second ball screw slide 41 is adjusted to the initial position according to a preset program or instruction through the control of the fourth linear drive 42. This position ensures that the horizontal mounting table 43 can be accurately moved to the top of the stack in subsequent operations. A plurality of rotating mounting blocks 44 are symmetrically mounted on the horizontal mounting table 43, and each rotating mounting block 44 is provided with a limit insert 45. The limit insert 45 is in a retracted state in the initial state, ready to be inserted into the second through slot 314 and the first through slot 213. When the bipolar plate stacking device 2 and the membrane electrode stacking device 3 complete their respective stacking operations, and the bipolar plates 7 and the membrane electrode 8 are alternately stacked to form a stack, the stable detachment device 4 starts to work. The second ball screw slide 41 and the fourth linear drive 42 work together to drive the horizontal mounting table 43 to move above the stack. As the horizontal mounting table 43 moves, the limit insert 45 gradually approaches both sides of the stack. When the limiting insert 45 is aligned with the second through-slot 314 and the first through-slot 213, the limiting insert 45 is inserted into the slot under the push of the horizontal mounting platform 43. This step ensures the stability of the bipolar plate stacking device 2 and the membrane electrode stacking device 3 when they are separated from the stack. When the bipolar plate stacking device 2 and the membrane electrode stacking device 3 are separated from the stack, the first rotary driver 46 starts to work. It drives the rotating mounting block 44 to rotate, and then drives the limiting insert 45 to expand to both sides of the stack. As the limiting insert 45 expands, the limiting insert 45 gradually moves away from the stack. In this process, the limiting insert 45 continues to provide support force to ensure that the stack will not deviate when it is separated from the bipolar plate stacking device 2 and the membrane electrode stacking device 3.

[0060] See also Figure 2 and Fig.14As shown, the parallel feeding device 5 includes a linear conveyor 51, a horizontal conveying frame 52 is installed at the discharge end of the linear conveyor 51, a plurality of rotating mounting shafts 53 are installed on the horizontal conveying frame 52, rotating mounting wheels are installed on the rotating mounting shafts 53, and the rotating mounting wheels are provided with anti-slip conductive belts 54, an infrared sensor 55 is installed on the horizontal conveying frame 52, and the parallel feeding device 5 also includes a second rotating driver 56 for driving the rotating mounting shaft 53 to rotate.

[0061] When the upstream process such as the storage area of ​​the bipolar plate 7 and the membrane electrode 8 prepares the material and issues a conveying instruction, the linear conveyor 51 starts to work and conveys the material to the horizontal conveyor rack 52. Driven by the linear conveyor 51, the material moves along the predetermined track to the horizontal conveyor rack 52. When the material arrives at the entrance of the horizontal conveyor rack 52, the infrared sensor 55 detects the arrival of the material and sends a signal to the control system. The control system adjusts the speed and position of the linear conveyor 51 according to the received signal to ensure that the material can be accurately placed on the horizontal conveyor rack 52. After the material is placed on the horizontal conveyor rack 52, the second rotary drive 56 starts to work. It drives the rotating mounting shaft 53 to rotate, thereby driving the rotating mounting wheel and the anti-skid conductive belt 54 sleeved on the rotating mounting wheel to move together. The design of the anti-skid conductive belt 54 ensures that the material will not slip or deviate during the transmission process. As the rotating mounting wheel rotates, the anti-skid conductive belt 54 begins to drive the material forward. The material is transported along the horizontal conveyor frame 52 toward the bipolar plate stacking device 2 and the membrane electrode stacking device 3 under the traction of the anti-slip conductive belt 54 .

[0062] The rotation speed of the second rotary driver 56 can be adjusted according to production requirements to ensure that the material can be transferred to the stacking device at a suitable speed, which can ensure production efficiency and avoid stacking problems caused by too fast or too slow speed.

[0063] When the material is transferred to the receiving position of the bipolar plate stacking device 2 and the membrane electrode stacking device 3, the infrared sensor 55 detects the arrival of the material again and sends a signal to the control system. The control system stops the rotation of the second rotary driver 56 according to the received signal, so that the material stays at the predetermined stacking position. This effectively realizes automatic feeding of the bipolar plate stacking device 2 and the membrane electrode stacking device 3, thereby improving production efficiency.

[0064] Specific working principle:

[0065] A plurality of parallel feeding devices 5 are respectively located beside the bipolar plate stacking device 2 and the membrane electrode stacking device 3, and the bipolar plates 7 and the membrane electrode 8 are placed on their respective stacking devices in advance according to the production order. These devices are automatically controlled to ensure the continuity and accuracy of material supply. The support seat 1 is arranged in the working area of ​​the battery stack production equipment, and is used to accurately limit and fix the lower end plate 9. By placing the manipulator, the lower end plate 9 is accurately placed on the support seat 1, laying the foundation for the subsequent stacking operation. The bipolar plate stacking device 2 automatically limits the stacking of multiple layers of bipolar plates 7 to ensure the precise alignment between each layer of bipolar plates 7. The membrane electrode stacking device 3 is symmetrically installed with the bipolar plate stacking device 2, and the multiple layers of membrane electrodes 8 are stacked synchronously. The working ends of the two are designed to be interlaced and assembled with each other so as to achieve precise matching during the stacking process. After the bipolar plates 7 and the membrane electrodes 8 are ready, the working ends of the bipolar plate stacking device 2 and the membrane electrode stacking device 3 are interlaced and spliced ​​with each other, and the limit of the membrane electrode 8 is first released to make it fall onto the bipolar plate 7 that has been placed. Subsequently, the bipolar plate stacking device 2 releases the bipolar plates 7 one by one, so that they are stacked on the membrane electrode 8 in sequence to form an alternating stacking structure. After the bipolar plates 7 and the membrane electrode 8 are stacked, the working end of the stable detachment device 4 is quickly inserted into the two sides of the stack to provide additional support force to ensure the stability of the stack when it is separated from the stacking device. After the stable detachment device 4 stabilizes the stack, the bipolar plate stacking device 2 and the membrane electrode stacking device 3 are separated from the two sides of the stack, and the stable detachment device 4 is gradually separated from the stack. At this time, the bipolar plate stacking device 2 and the membrane electrode stacking device 3 are directly moved to the loading position of the parallel feeding device 5, and continue to receive new bipolar plates 7 and membrane electrodes 8 to prepare for the next round of stacking. In this process, the upper end plate 6 is accurately placed on the stacked bipolar plates 7 and membrane electrodes 8 by placing a manipulator. Subsequently, the battery stack production equipment applies a certain pressure to the upper end plate 6 to ensure that all components fit tightly. Finally, the upper end plate 6 and the lower end plate 9 are positioned and fixed by multiple screws to complete the assembly of the entire hydrogen fuel cell stack. Through the innovative design of the synchronous stacking and handling device, the efficient stacking of multi-layer bipolar plates 7 and membrane electrodes 8 is achieved, which greatly shortens the stacking time and improves production efficiency and product quality. At the same time, the automated control and precise coordination of each link ensure the stability and reliability of the production process.

[0066] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A production equipment for a hydrogen fuel cell stack, characterized in that: The invention comprises a synchronous stacking and handling device installed on a battery stack production device, the synchronous stacking and handling device comprising a bearing seat (1), a bipolar plate stacking device (2), a membrane electrode stacking device (3), a stable separation device (4) and a parallel feeding device (5); The bearing seat (1) is used to limit the placement of the lower end plate (9); The bipolar plate stacking device (2) and the membrane electrode stacking device (3) are symmetrically mounted on both sides of the support seat (1); the working end of the bipolar plate stacking device (2) and the working end of the membrane electrode stacking device (3) can be interlaced and assembled with each other; the bipolar plate stacking device (2) is used to synchronously stack and place multiple layers of bipolar plates (7); and the membrane electrode stacking device (3) is used to synchronously stack and place multiple layers of membrane electrodes (8); The stabilizing detaching device (4) is installed above the supporting seat (1), and the stabilizing detaching device (4) is used to stabilize the stacked bipolar plates (7) and membrane electrodes (8); A plurality of parallel feeding devices (5) are provided, and are distributed beside the bipolar plate stacking device (2) and the membrane electrode stacking device (3); The bipolar plate stacking device (2) comprises a first movable adjustment platform (23) mounted on the side of the bearing seat (1); a first mounting frame (21) is mounted on the movable end of the first movable adjustment platform (23); a first through slot (213) is provided on the inner wall of the first mounting frame (21); a plurality of first position-limiting mounting rails (211) are symmetrically provided inside the first mounting frame (21) and are distributed at equal intervals; adjacent portions of the plurality of first position-limiting mounting rails (211) are each provided with a first splicing rail (212); a first synchronous support device (22) is mounted in the first position-limiting mounting rail (211); the first synchronous support device (22) is used for position-limiting support of the bipolar plate (7); The membrane electrode stacking device (3) comprises a second movable adjustment platform (35) mounted on the side of the bearing seat (1); a second mounting frame (31) is mounted on the movable end of the second movable adjustment platform (35); a second through slot (314) is provided on the inner wall of the second mounting frame (31); a plurality of second limit mounting rails (311) are symmetrically provided inside the second mounting frame (31) and are distributed at equal intervals; a second splicing rail (312) is provided at adjacent locations of the plurality of second limit mounting rails (311); a second synchronous support device (32) is installed inside the second limit mounting rails (311); an inclined guide rail (313) is provided above the second limit mounting rails (311); a limit pressing strip (33) is installed inside the inclined guide rails (313); and a step pressing device (34) for pushing the limit pressing strip (33) to move at intervals is also installed on the outer side of the second mounting frame (31).

2. A hydrogen fuel cell stack production equipment according to claim 1, characterized in that: The first synchronous support device (22) comprises a plurality of position-limiting support bars (225) distributed in the first position-limiting mounting rail (211), one end of the position-limiting support bar (225) passes through the first position-limiting mounting rail (211) and extends outwards. The first synchronous support device (222) further comprises a plurality of synchronous spaced push plates (224), a plurality of spaced push grooves (2241) are provided on the synchronous spaced push plates (224), the spaced push grooves (2241) are of different lengths, the plurality of spaced push grooves (2241) correspond one to one with the plurality of position-limiting support bars (225), the spaced push grooves (2241) are slidably connected to one end of the position-limiting support bar (225) extending outwards. The first synchronous support device (22) further comprises a first linear drive (221) mounted on the side of the first mounting frame (21), a connecting block (222) is mounted on the output end of the first linear drive (221), and connecting rods (223) are mounted between the connecting block (222) and the plurality of synchronous spaced push plates (224).

3. The production equipment of a hydrogen fuel cell stack according to claim 2, characterized in that: A flow chamber is provided inside the position-limiting support strip (225), and a plurality of adsorption holes (2251) are provided on the support surface of the position-limiting support strip (225).

4. The hydrogen fuel cell stack production equipment according to claim 1, characterized in that: The first movable adjustment platform (23) comprises a rotating platform (231), a lifting platform (233) is provided above the rotating platform (231), a guide column (232) is installed between the lifting platform (233) and the rotating platform (231), a second linear drive (235) is also installed on the rotating platform (231), an output end of the second linear drive (235) is connected to the lifting platform (233), a first ball screw slide (234) is installed on the lifting platform (233), and a movable end of the first ball screw slide (234) is connected to the first installation frame (21).

5. The production equipment of a hydrogen fuel cell stack according to claim 1, characterized in that: The abutting end of the limit pressing strip (33) is an elastic pressing strip (331), and a pressure push block (332) is provided on the side of the limit pressing strip (33) away from the elastic pressing strip (331). A plurality of elastic pushing columns (333) are installed on the pressure push block (332), and a return spring is installed between the elastic pushing columns (333) and the abutting push block.

6. The hydrogen fuel cell stack production equipment according to claim 5, characterized in that: The step pressing device (34) comprises a limit mounting frame (341) mounted on the side of the second mounting frame (31), a synchronous pushing frame (342) being mounted on the limit mounting frame (341), a step pushing tool (343) being symmetrically mounted on the synchronous pushing frame (342), a plurality of step pushing grooves (3431) being distributed inside the step pushing tool (343), the step pushing grooves (3431) corresponding one to one with the pressure pushing blocks (332), and the step pressing device (34) further comprises a third linear drive (344) for driving the synchronous pushing frame (342) to move.

7. The production equipment of a hydrogen fuel cell stack according to claim 1, characterized in that: The stable disengagement device (4) comprises a second ball screw slide (41) arranged above the bearing seat (1); a fourth linear drive (42) is mounted on the second ball screw slide (41); a horizontal mounting platform (43) is mounted on the output end of the fourth linear drive (42); a plurality of rotating mounting blocks (44) are symmetrically mounted on the horizontal mounting platform (43); each rotating mounting block (44) is provided with a limit insert (45); and a first rotating drive (46) for driving the rotating mounting blocks (44) to rotate is also mounted on the horizontal mounting platform (43).

8. The production equipment of a hydrogen fuel cell stack according to claim 1, characterized in that: The parallel feeding device (5) comprises a linear conveyor (51), a horizontal conveyor frame (52) is installed at the discharge end of the linear conveyor (51), a plurality of rotating mounting shafts (53) are installed on the horizontal conveyor frame (52), rotating mounting wheels are installed on the rotating mounting shafts (53), and anti-slip conductive belts (54) are sleeved on the rotating mounting wheels. An infrared sensor (55) is installed on the horizontal conveyor frame (52), and the parallel feeding device (55) further comprises a second rotary driver (56) for driving the rotating mounting shafts (53) to rotate.

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