Stacking device and method for high-precision stacks of electric piles

Abstract

The application discloses a kind of high-precision stacking device and method of electric pile, above-mentioned device includes stacking mechanism;Visual inspection mechanism;Bipolar plate deviation correction mechanism;Bipolar plate feeding mechanism;Bipolar plate handling mechanism, for moving the bipolar plate on bipolar plate feeding mechanism to bipolar plate deviation correction mechanism, and moving the bipolar plate deviation correction mechanism deviation correction after bipolar plate to stacking mechanism;Membrane electrode deviation correction mechanism;Membrane electrode feeding mechanism;Membrane electrode handling mechanism, for moving the membrane electrode on membrane electrode feeding mechanism to membrane electrode deviation correction mechanism, and moving the membrane electrode deviation correction mechanism deviation correction after membrane electrode to stacking mechanism.The high-precision stacking device and method of electric pile provided by the application, when electric pile is stacked, first deviation correction is carried out to bipolar plate and membrane electrode, then visual inspection mechanism is detected to the material that is completed to stack, and the bipolar plate and membrane electrode that are rejected are removed, guarantee the overall stacking precision of electric pile.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fuel cell. More particularly, the present application relates to a high-precision stacking device and method for fuel cell stack. BACKGROUND

[0002] The fuel cell stack is mainly composed of bipolar plates and membrane electrodes which are stacked in series. The quality of the stack is closely related to the performance of the fuel cell. In the process of stacking the fuel cell stack, the bipolar plates and the membrane electrodes are generally stacked in the order of stacking by a mechanical hand. However, the existing fuel cell stack stacking equipment has low precision, especially in the process of stacking, the size error of the bipolar plates and the membrane electrodes cannot be detected. If the out-of-tolerance bipolar plates or membrane electrodes are put into the fuel cell stack, the stacking precision of the entire fuel cell stack will be affected, which will lead to uneven stress of the fuel cell stack, and further affect the sealing performance, contact performance and mass transfer characteristics of the fuel cell stack, and finally affect the output characteristics of the fuel cell. SUMMARY

[0003] The purpose of the present application is to provide a high-precision stacking device and method for fuel cell stack, which can correct the deviation of the bipolar plates and the membrane electrodes before stacking, and then detect the stacked materials by a visual detection mechanism to remove the out-of-tolerance bipolar plates and membrane electrodes, so as to ensure the overall stacking precision of the fuel cell stack.

[0004] In order to achieve the purposes and other advantages according to the present application, a high-precision stacking device for fuel cell stack is provided, which comprises:

[0005] a stacking mechanism;

[0006] a visual detection mechanism arranged above the stacking mechanism;

[0007] a bipolar plate deviation correction mechanism;

[0008] a bipolar plate feeding mechanism;

[0009] a bipolar plate conveying mechanism for moving the bipolar plates on the bipolar plate feeding mechanism to the bipolar plate deviation correction mechanism, and moving the bipolar plates corrected by the bipolar plate deviation correction mechanism to the stacking mechanism;

[0010] a membrane electrode deviation correction mechanism;

[0011] a membrane electrode feeding mechanism;

[0012] a membrane electrode conveying mechanism for moving the membrane electrodes on the membrane electrode feeding mechanism to the membrane electrode deviation correction mechanism, and moving the membrane electrodes corrected by the membrane electrode deviation correction mechanism to the stacking mechanism.

[0013] Further, the bipolar plate conveying mechanism in the high-precision stacking device for fuel cell stack comprises:

[0014] a first linear drive unit;

[0015] a first bipolar plate conveying assembly in transmission connection with the first linear drive unit, the first linear drive unit driving the first bipolar plate conveying assembly to move back and forth above the bipolar plate feeding mechanism, the bipolar plate deviation rectifying mechanism and the stacking mechanism.

[0016] Further, the bipolar plate high-precision stacking device further comprises:

[0017] a first out-of-tolerance bipolar plate collecting bin, the first linear drive unit driving the first bipolar plate conveying assembly to move above the first out-of-tolerance bipolar plate collecting bin.

[0018] Further, the bipolar plate high-precision stacking device, the first out-of-tolerance bipolar plate collecting bin is arranged between the bipolar plate feeding mechanism and the bipolar plate deviation rectifying mechanism, the first bipolar plate conveying assembly is arranged in two groups, the first linear drive unit is a multi-sliding block linear module, and the two groups of first bipolar plate conveying assemblies are connected with two sliding blocks of the multi-sliding block linear module respectively.

[0019] Further, the bipolar plate high-precision stacking device, the bipolar plate feeding mechanism comprises:

[0020] a bipolar plate bin;

[0021] a second linear drive unit;

[0022] a third linear drive unit, both ends of which extend to below the bipolar plate conveying mechanism and the second linear drive unit respectively;

[0023] a transfer trolley, an upper end of which is provided with a composite suction cup, the transfer trolley being in transmission connection with the third linear drive unit;

[0024] a second out-of-tolerance bipolar plate collecting bin arranged between the bipolar plate bin and the third linear drive unit;

[0025] a second bipolar plate conveying assembly in transmission connection with the second linear drive unit, the second linear drive unit driving the second bipolar plate conveying assembly to move back and forth above the bipolar plate bin, the second out-of-tolerance bipolar plate collecting bin and the third linear drive unit.

[0026] Further, the bipolar plate high-precision stacking device, the stacking mechanism comprises:

[0027] a stacking tool, an upper end of which is vertically provided with a plurality of limiting rods, the plurality of limiting rods being arranged to form a stacking cavity;

[0028] a bearing plate arranged in the stacking cavity;

[0029] A driving mechanism is in transmission connection with the bearing plate to drive the bearing plate to move up and down in the stacking cavity.

[0030] Further, the driving mechanism comprises:

[0031] Two lifting units are oppositely arranged on two sides of the stacking tool;

[0032] Two fourth linear driving units are respectively in transmission connection with the two lifting units;

[0033] Two supporting frames are respectively in transmission connection with the two linear driving units, the lower end of the bearing plate is provided with a through slot corresponding to the supporting frames, and the two fourth linear driving units drive the two supporting frames to approach or move away from each other, so that the two supporting frames extend into the through slot to support the bearing plate, or move out of the through slot and separate from the bearing plate.

[0034] Further, the stacking mechanism further comprises:

[0035] A lifting table, and the stacking tool is placed on the lifting table.

[0036] Further, the stacking mechanism further comprises:

[0037] A polar plate pressing mechanism comprising two groups of pressing assemblies oppositely arranged on two sides of the stacking mechanism, the pressing assembly comprising:

[0038] A fifth linear driving unit;

[0039] At least two pressing plates are horizontally arranged and in transmission connection with the fifth linear driving unit, and the fifth linear driving unit drives the pressing plates to move above the stacking tool or move away from the stacking tool.

[0040] The application also provides an electric pile high-precision stacking method, comprising the following steps:

[0041] S1, moving the bipolar plate on the bipolar plate feeding mechanism to the bipolar plate deviation correction mechanism by the bipolar plate carrying mechanism to correct the deviation;

[0042] S2, moving the membrane electrode on the membrane electrode feeding mechanism to the membrane electrode deviation correction mechanism by the membrane electrode carrying mechanism to correct the deviation;

[0043] S3, the bipolar plate conveying mechanism and the membrane electrode conveying mechanism move the corrected bipolar plate and the membrane electrode to the stacking mechanism in sequence for stacking, and after the bipolar plate or the membrane electrode is moved to the stacking mechanism, the bipolar plate or the membrane electrode is detected by the visual detection mechanism, and the out-of-tolerance bipolar plate or membrane electrode is removed from the stacking mechanism by the bipolar plate conveying mechanism and the membrane electrode conveying mechanism.

[0044] The beneficial effects of the present application are:

[0045] The bipolar plate and the membrane electrode are corrected before the bipolar plate and the membrane electrode are stacked in the high-precision stacking device for the electric pile, then the visual detection mechanism is used to detect the stacked materials, and the out-of-tolerance bipolar plate and membrane electrode are removed, so that the overall stacking precision of the electric pile is improved, and high-precision stacking of the electric pile is realized.

[0046] Other advantages, objects and features of the present application will be apparent from the following description, and will be understood by those skilled in the art through the study and practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 The structure schematic view of the high-precision stacking device for the electric pile according to the present application is shown in the figure;

[0048] Figure 2 The structure schematic view of the high-precision stacking device for the electric pile according to the present application is shown in the figure;

[0049] Figure 3 The top view of the high-precision stacking device for the electric pile according to the present application is shown in the figure;

[0050] Figure 4 The side view of the high-precision stacking device for the electric pile according to the present application is shown in the figure;

[0051] Figure 5 The structure schematic view of the bipolar plate correction mechanism according to the present application is shown in the figure;

[0052] Figure 6 The structure schematic view of the first bipolar plate conveying assembly according to the present application is shown in the figure;

[0053] Figure 7 The structure schematic view of the visual detection mechanism according to the present application is shown in the figure;

[0054] Figure 8 The structure schematic view of the stacking mechanism according to the present application is shown in the figure;

[0055] Figure 9 The side view of the stacking mechanism according to the present application is shown in the figure;

[0056] Figure 10 The structure schematic view of the driving mechanism according to the present application is shown in the figure.

[0057] Wherein, the reference signs are represented as:

[0058] Stacking mechanism 1; stacking tool 101; limiting rod 102; bearing plate 103; lifting unit 104; fourth linear drive unit 105; support frame 106; lifting table 107; fifth linear drive unit 108; pressing plate 109;

[0059] Visual inspection mechanism 2; mounting bracket 201; industrial camera 202; camera mirror 203;

[0060] Bipolar plate deviation correction mechanism 3; support platform 301; deviation corrector 302; deviation correction support table 303; positioning camera 304;

[0061] Bipolar plate feeding mechanism 4; bipolar plate bin 401; second linear drive unit 402; third linear drive unit 403; transfer trolley 404; second out-of-tolerance bipolar plate collection bin 405; second bipolar plate carrying assembly 406;

[0062] Bipolar plate carrying mechanism 5; first linear drive unit 501; first bipolar plate carrying assembly 502; first out-of-tolerance bipolar plate collection bin 503;

[0063] Membrane electrode deviation correction mechanism 6;

[0064] Membrane electrode feeding mechanism 7;

[0065] Membrane electrode carrying mechanism 8. DETAILED DESCRIPTION

[0066] The present application will be further described below in conjunction with examples, so that those skilled in the art can implement it according to the description.

[0067] It should be noted that in the description of the present application, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application.

[0068] As shown in Figures 1-4 The embodiments of the present application provide an electric pile high-precision stacking device, which comprises:

[0069] Stacking mechanism 1;

[0070] Visual inspection mechanism 2, which is arranged above the stacking mechanism 1;

[0071] Bipolar plate correction mechanism 3; The bipolar plate correction mechanism 3 adopts a small lead high-precision ground screw to ensure the dimensional accuracy of correction, and performs multiple corrections to improve the overall accuracy of the correction platform.

[0072] Bipolar plate feeding mechanism 4;

[0073] Bipolar plate handling mechanism 5, which is used to move the bipolar plate on the bipolar plate loading mechanism 4 to the bipolar plate correction mechanism 3, and to move the bipolar plate after correction by the bipolar plate correction mechanism 3 to the stacking mechanism 1; membrane electrode correction mechanism 6;

[0074] Membrane electrode feeding mechanism 7;

[0075] The membrane electrode transport mechanism 8 is used to move the membrane electrodes on the membrane electrode loading mechanism 7 to the membrane electrode correction mechanism 6, and to move the membrane electrodes corrected by the membrane electrode correction mechanism 6 to the stacking mechanism 1. The bipolar plate transport mechanism 5 and the membrane electrode transport mechanism 8 work alternately, loading materials onto the stacking mechanism 1 sequentially. When the vision inspection mechanism 2 detects out-of-tolerance materials, the transport mechanism corresponding to that material continues to work, while another set of transport mechanisms pauses. After the transport mechanism removes the out-of-tolerance materials, it resumes loading materials onto the stacking mechanism 1.

[0076] In this embodiment, bipolar plates and membrane electrodes are fed one by one to their respective discharge positions via bipolar plate feeding mechanism 4 and membrane electrode feeding mechanism 7. Then, bipolar plates at the discharge position of bipolar plate feeding mechanism 4 are moved to bipolar plate correction mechanism 3 via bipolar plate transport mechanism 5, and membrane electrodes at the discharge position of membrane electrode feeding mechanism 7 are moved to membrane electrode correction mechanism 6 via membrane electrode feeding mechanism 7. Bipolar plate correction mechanism 3 corrects the deviation of its bipolar plates, and membrane electrode correction mechanism 6 corrects the deviation of its membrane electrodes. Finally, bipolar plate transport mechanism 5 and membrane electrode transport mechanism 8 work alternately to move the corrected bipolar plates from bipolar plate correction mechanism 3 and the corrected membrane electrodes from membrane electrode correction mechanism 6 to stacking mechanism 1. When a bipolar plate or membrane electrode is moved to stacking mechanism 1, it is located at the top of the stack, and the detection end of vision inspection mechanism 2 faces the stack. Vision inspection mechanism 2, as described above... Figure 7 As shown, it generally includes a mounting bracket 201, an industrial camera 202, and a camera lens 203. When the vision inspection mechanism 2 is working, it captures the outline of the electrode stack using the industrial camera. An alarm is triggered when the electrode stack is not stacked correctly. The bipolar plate or membrane electrode at the top of the electrode stack is marked as out-of-tolerance material. The out-of-tolerance bipolar plate is removed from the electrode stack by the bipolar plate handling mechanism 5, or the out-of-tolerance membrane electrode is removed from the electrode stack by the membrane electrode handling mechanism 8. In this embodiment, as... Figure 1 and Figure 4As shown, the vision inspection mechanism 2 adopts a dual vision inspection structure, that is, it uses two sets of industrial cameras to achieve dual vision, so as to ensure the visual positioning accuracy of large-sized materials.

[0077] The structure of the bipolar plate correction mechanism 3 is as follows: Figure 5 As shown, it consists of a support platform 301, a correction device 302, a correction support platform 303, and two positioning cameras 304. The bipolar plate correction mechanism 3 uses the positioning cameras 304 to take pictures, comparing the captured images with standard images in the processor (or database) to identify whether the bipolar plate is correctly positioned or level. When the correction device 302 detects an anomaly, it can use the correction support platform 303 for fine-tuning to change the bipolar plate's orientation. The correction support platform 303 has an embedded suction cup that holds the bipolar plate in place. In this embodiment, a first threshold θ1, a second threshold θ2, and a third threshold θ3 for the bipolar plate's deflection angle θ relative to the standard position can be preset in the processor, where θ1 < θ2 < θ3, and the number of fine-tuning operations A1, A2, and A3 of the correction support platform 303 within each interval can be set. When the real-time image of the bipolar plate captured by the positioning camera 304 shows θ≤θ1, there is no limit to the number of fine adjustments made by the correction support platform 303; when θ1<θ≤θ2, the correction support platform 303 is forced to make A1 fine adjustments; when θ2<θ≤θ3, the correction support platform 303 is forced to make A2 fine adjustments; and when θ≥θ3, the correction support platform 303 is forced to make A3 fine adjustments. When the deflection angle of the bipolar plate relative to the standard position is too large, the number of fine adjustments made by the correction support platform 303 is forcibly limited, and multiple corrections are used to ensure the correction effect of the bipolar plate. The membrane electrode correction mechanism 6 adopts the same structure as the bipolar plate correction mechanism 3, and will not be described in detail here.

[0078] Preferably, in another embodiment of the present invention, the bipolar plate handling mechanism 5 includes:

[0079] First linear drive unit 501;

[0080] The first bipolar plate handling assembly 502 is connected to the first linear drive unit 501. The first linear drive unit 501 drives the first bipolar plate handling assembly 502 to move back and forth above the bipolar plate loading mechanism 4, the bipolar plate correction mechanism 3 and the stacking mechanism 1.

[0081] In this embodiment, the first linear drive unit 501 can be a linear module, which drives the bipolar plate handling assembly to move back and forth above the bipolar plate loading mechanism 4, the bipolar plate correction mechanism 3, and the stacking mechanism 1. This is one possible implementation method. Figure 6As shown, the first bipolar plate handling assembly 502 includes a vertically arranged linear module, a mounting frame, and a composite suction cup. The linear module drives the mounting frame to move up and down, adjusting the height of the composite suction cup. Multiple vacuum suction cups are installed inside the composite suction cup to adsorb the bipolar plates. The first bipolar plate handling assembly 502 lifts the bipolar plates from the discharge position of the bipolar plate feeding mechanism 4 upwards, moves them to the bipolar plate correction mechanism 3 for screening, and then places them on the correction support platform. Furthermore, the first bipolar plate handling assembly 502 can also move the corrected bipolar plates from the bipolar plate correction mechanism 3 to the stacking mechanism 1.

[0082] The structure of the membrane electrode transport mechanism 8 is the same as that of the bipolar plate transport mechanism 5, and the specific structure of the membrane electrode transport mechanism 8 will not be described here.

[0083] Preferably, as another embodiment of the present invention, it further includes:

[0084] The first over-tolerance bipolar plate collection chamber 503 is equipped with a first linear drive unit 501 that can drive the first bipolar plate transport assembly 502 to move above the first over-tolerance bipolar plate collection chamber 503.

[0085] In this embodiment, after the bipolar plate located at the top of the fuel cell stack is marked as out-of-tolerance material by the visual inspection mechanism 2, the first bipolar plate handling assembly 502 moves to the stacking mechanism 1 and moves the out-of-tolerance bipolar plate to the first out-of-tolerance bipolar plate collection bin 503 for temporary storage. Then, the first bipolar plate handling assembly 502 moves to the bipolar plate correction mechanism 3 and moves the new corrected bipolar plate to the stacking mechanism 1 and places it at the top of the fuel cell stack.

[0086] Preferably, in another embodiment of the present invention, the first out-of-tolerance bipolar plate collection bin 503 is disposed between the bipolar plate loading mechanism 4 and the bipolar plate correction mechanism 3, the first bipolar plate handling assembly 502 is configured as two sets, the first linear drive unit 501 is a multi-slider linear module, and the two sets of the first bipolar plate handling assembly 502 are respectively connected to the two sliders of the multi-slider linear module.

[0087] In this embodiment, in order to improve the handling efficiency of the bipolar plate handling mechanism 5, such as... Figure 3 As shown, two sets of first bipolar plate handling assemblies 502 are set up. The first linear drive unit 501 is a multi-slider linear module, whose sliders move independently. The two sets of first bipolar plate handling assemblies 502 are driven to move horizontally by different sliders. When the bipolar plate handling mechanism 5 is working normally, the first set of bipolar plate handling assemblies 502 moves back and forth above the bipolar plate loading mechanism 4 and the bipolar plate correction mechanism 3, and the second set of bipolar plate handling assemblies 502 moves back and forth above the first out-of-tolerance bipolar plate collection bin 503, the bipolar plate correction mechanism 3 and the stacking mechanism 1.

[0088] When the first set of bipolar plate handling components 502 begins to move the bipolar plates from the discharge position of the bipolar plate feeding mechanism 4 to the bipolar plate correction mechanism 3, the second set of bipolar plate handling components 502 moves the bipolar plates after correction by the bipolar plate correction mechanism 3 to the stacking mechanism 1. After the first set of bipolar plate handling components 502 places the bipolar plates on the bipolar plate correction mechanism 3, the bipolar plate correction mechanism 3 begins to continue to correct the bipolar plates. The first set of bipolar plate handling components 502 returns to the area above the discharge position of the bipolar plate feeding mechanism 4 to wait. After the second set of bipolar plate handling components 502 completes the movement of the bipolar plates, it returns to the area above the bipolar plate correction mechanism 3. If the vision inspection mechanism 2 detects that the bipolar plate is out of tolerance, the membrane electrode transport mechanism 8 pauses operation. The second set of bipolar plate transport components 502 moves above the stacking mechanism 1 and moves the out-of-tolerance material to the first out-of-tolerance bipolar plate collection bin 503. Then, it moves again above the bipolar plate correction mechanism 3, moves the corrected bipolar plate from the correction mechanism 3 to the stacking mechanism 1, and then returns to the bipolar plate correction mechanism 3. When the vision inspection mechanism 2 detects that the bipolar plate is within tolerance, the membrane electrode transport mechanism 8 starts operating.

[0089] The bipolar plate is moved between the first out-of-tolerance bipolar plate collection bin 503, the bipolar plate correction mechanism 3, and the stacking mechanism 1; another set of bipolar plate handling components moves back and forth above the bipolar plate loading mechanism 4 and the bipolar plate correction mechanism 3, moving the bipolar plates at the discharge position of the bipolar plate loading mechanism 4 to the bipolar plate correction mechanism 3. When the bipolar plate handling mechanism 5 is working normally...

[0090] The two sets of first bipolar plate handling components 502 work together to shorten the time it takes for bipolar plates to move between the bipolar plate loading mechanism 4, the first out-of-tolerance bipolar plate collection bin 503, the bipolar plate correction mechanism 3 and the stacking mechanism 1, thereby improving the efficiency of bipolar plate handling.

[0091] The structure of the membrane electrode transport mechanism 8 is the same as that of the bipolar plate transport mechanism 5, such as... Figure 1 and Figure 3 As shown, the membrane electrode transport mechanism 8 and the bipolar plate transport mechanism 5 can share a set of multi-slider linear modules, thereby improving the control accuracy of the membrane electrode transport mechanism 8 and the bipolar plate transport mechanism 5.

[0092] Preferably, in another embodiment of the present invention, the bipolar plate feeding mechanism 4 includes:

[0093] Bipolar plate hopper 401;

[0094] Second linear drive unit 402;

[0095] The third linear drive unit 403 extends at both ends to the bottom of the bipolar plate transport mechanism 5 and the second linear drive unit 402, respectively.

[0096] The transfer trolley 404 is equipped with a composite suction cup at its upper end. The transfer trolley 404 is connected to the third linear drive unit 403. The two ends of the third linear drive unit 403 are the discharge position and the loading position, respectively. The discharge position is located below the bipolar plate conveying mechanism 5, and the loading position is located below the second linear drive unit 402.

[0097] The second out-of-tolerance bipolar plate collection bin 405 is disposed between the bipolar plate hopper 401 and the third linear drive unit 403.

[0098] The second bipolar plate handling assembly 406 is connected to the second linear drive unit 402. The second linear drive unit 402 drives the second bipolar plate handling assembly 406 to move back and forth above the bipolar plate hopper 401, the second out-of-tolerance bipolar plate collection hopper 405 and the third linear drive unit 403.

[0099] In this embodiment, the second linear drive unit 402 drives the second bipolar plate transport assembly 406 to move back and forth above the bipolar plate hopper 401, the second out-of-tolerance bipolar plate collection hopper 405, and the third linear drive unit 403, thereby moving the bipolar plates between the bipolar plate hopper 401, the second out-of-tolerance bipolar plate collection hopper 405, and the transfer trolley 404. When bipolar plates are being loaded, the third linear drive unit 403 drives the transfer trolley 404 to the loading position, and the second linear drive unit 402 drives the second bipolar plate transport assembly 406 to move above the bipolar plate hopper 401, adsorbing the bipolar plates inside. The second linear drive unit 402 then drives the second bipolar plate transport assembly 406 to the loading position, where the adsorbed bipolar plates are placed on the transfer trolley 404. The third linear drive unit 403 then drives the transfer trolley 404 to the discharge position to load the bipolar plate transport mechanism 5.

[0100] Furthermore, if there are too many out-of-tolerance bipolar plates temporarily stored in the first out-of-tolerance bipolar plate collection chamber 503 and the height is too high, it may affect the movement of the first bipolar plate handling assembly 502, thus requiring the out-of-tolerance bipolar plates temporarily stored in the first out-of-tolerance bipolar plate collection chamber 503 to be transferred. At this time, a second over-tolerance bipolar plate collection bin 405 is set between the bipolar plate hopper 401 and the third linear drive unit 403. The over-tolerance bipolar plates in the first over-tolerance bipolar plate collection bin 403 are moved above the discharge position of the bipolar plate loading mechanism 4 by the bipolar plate conveying mechanism 5, and the over-tolerance bipolar plates are placed on the transfer trolley 404. The transfer trolley 404 moves the over-tolerance bipolar plates to the loading position of the bipolar plate loading mechanism 4, and then the second bipolar plate conveying assembly 406 picks up the over-tolerance bipolar plates. The second linear drive unit 402 drives the over-tolerance bipolar plates to move into the second over-tolerance bipolar plate collection bin 405, and the second bipolar plate conveying assembly 406 puts the over-tolerance bipolar plates into the second over-tolerance bipolar plate collection bin 405.

[0101] The second bipolar plate handling assembly 406 adopts the same structure as the first bipolar plate handling assembly 502, and will not be described again here. Both the second linear drive unit 402 and the third linear drive unit 403 can be linear modules.

[0102] The structure of the membrane electrode loading mechanism 7 is the same as that of the bipolar plate loading mechanism, and the specific structure of the membrane electrode loading mechanism 7 will not be described here.

[0103] Preferably, as another embodiment of the present invention, such as Figures 8-9 As shown, the stacking mechanism 1 includes:

[0104] The stacking fixture 101 has multiple limiting rods 102 vertically arranged at its upper end, and the multiple limiting rods 102 surround the stacking cavity.

[0105] A support plate 103 is disposed within the stacking cavity; an electric stack is placed on the upper end of the support plate 103.

[0106] A drive mechanism is connected to the support plate 103 to drive the support plate 103 to move up and down in the stacking cavity.

[0107] In this embodiment, multiple limiting rods 102 at the upper end of the stacking fixture 101 form a stacking cavity, and the bearing plate 103 is disposed in the stacking cavity. The edge limiting rods 102 slide against the bearing plate 103. When the driving mechanism drives the bearing plate 103 to move up and down in the stacking cavity, the multiple limiting rods 102 limit the movement trajectory of the bearing plate 103, so as to keep the bearing plate 103 and the upper end of the electric stack stable in raising and lowering, and maintain the height of the upper end of the electric stack.

[0108] Preferably, as another embodiment of the present invention, such as Figure 10 As shown, the drive mechanism includes:

[0109] Two lifting units 104 are arranged opposite each other on both sides of the stacking fixture 101;

[0110] Two fourth linear drive units 105 are respectively connected to the two lifting units 104;

[0111] Two support frames 106 are respectively connected to the two linear drive units. The lower end of the bearing plate 103 is provided with a through groove corresponding to the support frame 106. The two fourth linear drive units 105 drive the two support frames 106 to move closer or further away from each other, so that the two support frames 106 extend into the through groove to support the bearing plate 103, or move out of the through groove to separate from the bearing plate 103.

[0112] In this embodiment, two fourth linear drive units 105 drive two support frames 106 to move closer or further apart. The two support frames 106 extend into the through slot at the lower end of the support plate 103, supporting the support plate 103. When the two support frames 106 move out of the through slot, the support plate 103 is separated from the starting mechanism. At this time, the stacking fixture 101 and the drive mechanism can be separated, realizing the detachable connection between the stacking fixture 101 and the high-precision stacking device of the fuel cell stack. This facilitates the removal of the stacking fixture 101 from the high-precision stacking device of the fuel cell stack for transfer, and the installation of a new stacking fixture 101 on the high-precision stacking device of the fuel cell stack.

[0113] Both the lifting unit 104 and the fourth linear drive unit 105 can be linear modules.

[0114] Preferably, in another embodiment of the present invention, the stacking mechanism 1 further includes:

[0115] Lifting platform 107, on which the stacking fixture 101 is placed.

[0116] In this embodiment, a lifting platform 107 is provided below the stacking fixture 101. The lifting platform 107 drives the stacking fixture 101 to move up and down, making it easier to remove the stacking fixture 101.

[0117] Preferably, as another embodiment of the present invention, it further includes:

[0118] The electrode pressing mechanism 109 includes two sets of pressing assemblies 109 arranged opposite to each other on both sides of the stacking mechanism 1. Each pressing assembly 109 includes:

[0119] Fifth linear drive unit 108;

[0120] At least two pressure plates 109 are horizontally arranged and connected to the fifth linear drive unit 108. The fifth linear drive unit 108 drives the pressure plates 109 to move above the stacking fixture 101 or away from the stacking fixture 101.

[0121] In this embodiment, the fifth linear drive unit 108 drives the pressing plate 109 to move to the top of the stack. The pressing plate 109 presses the stacked stack to ensure that the material is flat, which is convenient for the vision inspection system to take pictures and improve the vision accuracy.

[0122] The fifth linear drive unit 108 can be a linear module.

[0123] The present invention also provides a method for high-precision stacking of fuel cells, comprising the following steps:

[0124] S1. The bipolar plate on the bipolar plate loading mechanism 4 is moved to the bipolar plate correction mechanism 3 by the bipolar plate handling mechanism 5 for correction.

[0125] S2. The membrane electrode on the membrane electrode loading mechanism 7 is moved to the membrane electrode correction mechanism 6 by the membrane electrode transport mechanism 8 for correction.

[0126] S3. The bipolar plate transport mechanism 5 and the membrane electrode transport mechanism 8 sequentially move the corrected bipolar plate and membrane electrode to the stacking mechanism 1 for stacking. After the bipolar plate or membrane electrode is moved to the stacking mechanism 1, the bipolar plate or membrane electrode is detected by the visual inspection mechanism 2, and the bipolar plate or membrane electrode that exceeds the tolerance is removed from the stacking mechanism 1 by the bipolar plate transport mechanism 5 and the membrane electrode transport mechanism 8.

[0127] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and embodiments shown and described herein.

Claims

1. A high-precision stacking device for fuel cell stacks, characterized in that, include: Stacking mechanism; A visual inspection mechanism is disposed above the stacking mechanism; Bipolar plate correction mechanism; Bipolar plate loading mechanism; A bipolar plate handling mechanism is used to move bipolar plates from the bipolar plate loading mechanism to the bipolar plate correction mechanism, and to move bipolar plates after correction by the bipolar plate correction mechanism to the stacking mechanism. Membrane electrode correction mechanism; Membrane electrode feeding mechanism; A membrane electrode transport mechanism is used to move the membrane electrode on the membrane electrode loading mechanism to the membrane electrode correction mechanism, and to move the membrane electrode after correction by the membrane electrode correction mechanism to the stacking mechanism. The bipolar plate handling mechanism includes: First linear drive unit; The first bipolar plate handling assembly is connected to the first linear drive unit. The first linear drive unit drives the first bipolar plate handling assembly to move back and forth above the bipolar plate loading mechanism, the bipolar plate correction mechanism and the stacking mechanism. The bipolar plate loading mechanism includes: Bipolar plate hopper; Second linear drive unit; The third linear drive unit extends at both ends to the bottom of the bipolar plate conveying mechanism and the second linear drive unit, respectively. The transfer trolley is equipped with a composite suction cup at its upper end, and the transfer trolley is connected to the third linear drive unit. The second out-of-tolerance bipolar plate collection bin is located between the bipolar plate hopper and the third linear drive unit; The second bipolar plate transport assembly is connected to the second linear drive unit. The second linear drive unit drives the second bipolar plate transport assembly to move back and forth above the bipolar plate hopper, the second out-of-tolerance bipolar plate collection hopper and the third linear drive unit. The stacking mechanism includes: The stacking fixture has multiple vertically positioned limiting rods at its upper end, which together form a stacking cavity. A support plate is disposed within the stacking cavity; A drive mechanism is connected to the support plate to drive the support plate to move up and down within the stacking cavity.

2. The high-precision stacking device for fuel cells as described in claim 1, characterized in that, Also includes: The first out-of-tolerance bipolar plate collection chamber is equipped with a first linear drive unit that can move the first bipolar plate transport assembly to a position above the first out-of-tolerance bipolar plate collection chamber.

3. The high-precision stacking device for fuel cells as described in claim 2, characterized in that, The first bipolar plate collection bin is located between the bipolar plate feeding mechanism and the bipolar plate correction mechanism. The first bipolar plate handling assembly is configured as two sets. The first linear drive unit is a multi-slider linear module. The two sets of the first bipolar plate handling assemblies are respectively connected to the two sliders of the multi-slider linear module.

4. The high-precision stacking device for fuel cells as described in claim 1, characterized in that, The drive mechanism includes: Two lifting units are arranged opposite each other on both sides of the stacked fixture; Two fourth linear drive units are respectively connected to the two lifting units; Two support frames are respectively connected to the two linear drive units. The lower end of the bearing plate is provided with a through groove corresponding to the support frame. The two fourth linear drive units drive the two support frames to move closer or further away from each other, so that the two support frames extend into the through groove to support the bearing plate, or move out of the through groove to separate from the bearing plate.

5. The high-precision stacking device for fuel cells as described in claim 1, characterized in that, The stacking mechanism further includes: A lifting platform on which the stacking fixtures are placed.

6. The high-precision stacking device for fuel cells as described in claim 1, characterized in that, Also includes: The electrode plate pressing mechanism includes two sets of pressing assemblies arranged opposite each other on both sides of the stacking mechanism, the pressing assemblies including: Fifth linear drive unit; At least two pressure plates are horizontally arranged and connected to the fifth linear drive unit, which drives the pressure plates to move above the stacking fixture or move them away from the stacking fixture.

7. A method for high-precision stacking of fuel cell stacks, employing the high-precision stacking apparatus as described in any one of claims 1-6, characterized in that, Includes the following steps: S1. The bipolar plates on the bipolar plate loading mechanism are moved to the bipolar plate correction mechanism for correction by the bipolar plate conveying mechanism. S2. The membrane electrode on the membrane electrode loading mechanism is moved to the membrane electrode correction mechanism for correction by the membrane electrode transport mechanism. S3. The bipolar plate transport mechanism and the membrane electrode transport mechanism sequentially move the corrected bipolar plate and membrane electrode to the stacking mechanism for stacking. After the bipolar plate or membrane electrode is moved to the stacking mechanism, the bipolar plate or membrane electrode is detected by the visual inspection mechanism, and the bipolar plate or membrane electrode that exceeds the tolerance is removed from the stacking mechanism by the bipolar plate transport mechanism and the membrane electrode transport mechanism.

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