A hydrogen fuel cell stack assembly

Abstract

The application relates to the technical field of battery stacks, in particular to a hydrogen fuel cell stack assembling device, which comprises a rack, a limiting module horizontally arranged on the rack, a plurality of groups of first limiting rods capable of horizontally sliding towards the middle part of the rack, a top bracing unit capable of elastically limiting the battery stack and embeddedly arranged on the sidewall of each group of the first limiting rods, a correction module arranged with two groups, the two groups of the correction module being horizontally arranged in the rack and capable of sliding towards the center of the rack in an inclined state, a combination module horizontally arranged on the top of the rack, the combination module being provided with two combination plates capable of moving close to or away from each other and an elastic buckle unit arranged on each combination part, and the like. The application can not only accurately correct a plurality of battery stacks but also efficiently compress the plurality of battery stacks.

Description

Technical Field

[0001] This invention relates to the field of battery stack technology, specifically to a hydrogen fuel cell stack assembly device. Background Technology

[0002] Hydrogen fuel cells are green energy devices that directly convert hydrogen and oxygen into electrical energy through an electrochemical reaction. They offer advantages such as high energy density, zero emissions, and suitability for both mobile and stationary power sources. In hydrogen fuel cell applications, the stack (i.e., the fuel cell stack) is the core component. It is composed of numerous membrane electrode assemblies (MEAs), electrode plates, gaskets, and other components stacked, oriented, and tightly pressed together. The assembly precision directly affects the stack's airtightness, conductivity, cooling efficiency, and overall output performance.

[0003] Chinese invention patent CN110828875B discloses a hydrogen fuel cell stack assembly device, including a stack assembly platform, an airtightness tester, and an angle tester. The stack assembly platform includes a support plate, a bracket, and a pressure plate. The bracket has a trapezoidal cross-section, and its bottom is fixedly installed on the lower surface of the support plate. The pressure plate is perpendicularly connected to one end of the support plate. The airtightness tester is arranged around the stack assembly platform and connected to the fuel cell stack located on the support plate via a pipeline. The angle tester is also mounted on the support plate. This invention, by setting a bracket below the stack assembly platform, allows operators to quickly adjust the placement of the stack assembly platform according to assembly needs, thus solving the problem of vertical forces exerted on the membrane electrode assembly (MEA) by other stack components during the stack assembly process. It effectively controls the compression of the MEA, thereby ensuring the performance and service life of the fuel cell stack. However, its assembly method is mostly semi-automatic or manual, relying on manual stacking or simple clamps for positioning. This method has the following drawbacks: First, the low precision of manual alignment can easily lead to misalignment and pressure deviation between battery cells, which in turn affects the sealing of the stack and the efficiency of the electrochemical reaction. Second, the lack of a unified pressure control method can cause uneven stress during assembly, which can damage the membrane electrode assembly or cause inconsistent stack thickness, affecting product consistency and reliability. In addition, the existing assembly process has poor versatility and cannot be flexibly adapted to different stack structures, which seriously restricts the automation, standardization and mass production of hydrogen fuel cells. Summary of the Invention

[0004] To address the aforementioned issues, a hydrogen fuel cell stack assembly device is provided. This device not only enables precise stacking of multiple battery stacks but also allows for automatic pressing of multiple battery stacks, thereby solving the technical problems in existing technologies that easily lead to misalignment and pressure deviation between battery cells during battery stack assembly, as well as damage to membrane electrode assemblies or inconsistent stack thickness.

[0005] To address the problems of existing technologies, the present invention provides a hydrogen fuel cell stack assembly apparatus, comprising:

[0006] frame;

[0007] The limiting module is horizontally mounted across the frame; the limiting module is provided with multiple sets of first limiting rods that can slide horizontally toward the center of the frame; the multiple sets of first limiting rods enclose an assembly area for assembling the battery stack; each set of first limiting rods is also embedded with a top support unit that can elastically limit the battery stack on its sidewall.

[0008] The correction module is provided in two sets, and the two sets of correction modules are horizontally arranged across the frame;

[0009] The assembly module is horizontally mounted on the top of the frame. The assembly module has two assembly plates that can move closer or further apart and elastic clip units on each assembly plate.

[0010] The limiting module further includes a first slider capable of driving the first limiting rod to slide radially on the frame, a first locking member capable of dynamically locking the sliding position of the first slider, and an adjustment part capable of adjusting the rotation of the first limiting rod.

[0011] The top support unit is provided with a radially retractable guide bar and a first spring that can continuously radially push the guide bar out; the guide bar is horizontally embedded and installed on one side of the first limiting rod along the axis of the first limiting rod.

[0012] The elastic clamping unit is provided with two clamping parts that can move closer or further apart and a second spring that can continuously support the two clamping parts moving further apart. The clamping parts are also provided with guide rods that can guide the two clamping parts to retract towards each other. The clamping parts include a third slider, a clamping plate, and a latch. The clamping plate is vertically fixed on one side of the third slider. The latch is opened through the clamping plate. The guide rod is fixedly installed at the lower end of the clamping plate in an inclined state and is inclined towards the third slider.

[0013] Preferably, the limiting surface of the guide strip is further provided with a damping patch.

[0014] Preferably, the limiting module further includes a corrective pressure plate capable of longitudinally limiting multiple battery stacks; the corrective pressure plate is horizontally disposed on the top of the frame along the long side of the frame.

[0015] Preferably, the correction module is provided with a second limiting rod that can slide horizontally toward the center of the frame in a radial direction and a correction groove that is inclinedly opened on the side wall of the second limiting rod.

[0016] The advantages of this invention compared to the prior art are:

[0017] 1. The present invention, through the assembly area of ​​the adjustable limiting structure formed by multiple first limiting rods, can flexibly adapt and precisely limit hydrogen fuel cell stacks of different specifications and sizes, so that the battery stacks always remain vertical and equidistant during the insertion process, effectively avoiding the problems of skewing and uneven spacing that exist in traditional manual insertion.

[0018] 2. This invention enables the synchronous parallel pressing and assembly of multiple battery stacks, ensuring high fit of the rear end faces of the stack assembly and improving the structural stability of the stack. Furthermore, the rotation of the first limiting rod and the switching design of the top support surface significantly reduce frictional resistance during assembly, preventing scratches on the battery stack surface and improving overall assembly quality. Combined with manually or automatically operable straightening plates, corner limiters, and damping patches, precise correction and limiting support are achieved for the battery stack throughout the insertion, pressing, and demolding processes, significantly improving positioning accuracy and operational efficiency in hydrogen fuel cell stack assembly. This invention is suitable for standardized, highly consistent, and rapid assembly of multiple types of core components. Attached Figure Description

[0019] Figure 1 This is a three-dimensional diagram of a hydrogen fuel cell stack assembly device.

[0020] Figure 2 A side view of a hydrogen fuel cell stack assembly device Figure 1 .

[0021] Figure 3 yes Figure 2 Sectional view at point AA.

[0022] Figure 4 yes Figure 3 A magnified view of section B.

[0023] Figure 5 yes Figure 3 A magnified view of a portion of point C.

[0024] Figure 6 This is a top view of a hydrogen fuel cell stack assembly device.

[0025] Figure 7 A side view of a hydrogen fuel cell stack assembly device Figure 2 .

[0026] Figure 8 This is an exploded 3D view of a portion of the structure in a hydrogen fuel cell stack assembly device.

[0027] Figure 9 yes Figure 8 A magnified view of a portion of point D.

[0028] Figure 10 This is a three-dimensional structural diagram of the combined module section in a hydrogen fuel cell stack assembly device.

[0029] The numbers on the map are:

[0030] 1-Frame; 11-Horizontal slide rail; 12-Inclined slide rail;

[0031] 2-Limiting module; 21-First limiting rod; 22-Top support unit; 221-Guide strip; 222-First spring; 223-First telescopic rod; 224-Damping patch; 23-First slider; 231-Slot; 24-First locking element; 25-Adjusting part; 26-Correcting pressure plate; 261-Holding part; 262-Rib; 263-Pressure plate;

[0032] 3-Correction module; 31-Second limit rod; 32-Correction groove; 33-Second slider; 34-Second locking element;

[0033] 4-Assembly module; 41-Assembly plate; 42-Elastic buckle unit; 421-Buckling part; 4211-Third slider; 4212-Buckling plate; 4213-Barrel slot; 422-Second spring; 423-Guide rod; 424-Fixing plate; 425-Slide rail; 426-Second telescopic rod. Detailed Implementation

[0034] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0035] See Figures 1 to 10 As shown: A hydrogen fuel cell stack assembly device includes: a frame 1; a limiting module 2, horizontally spanning the frame 1; the limiting module 2 having multiple sets of first limiting rods 21 capable of horizontally sliding radially toward the center of the frame 1; the multiple sets of first limiting rods 21 forming an assembly area for assembling the fuel cell stack; each set of first limiting rods 21 also having an embedded top support unit 22 for elastically limiting the fuel cell stack on its sidewall; and a correction module 3, of which two sets are provided. The assembly module 4 is horizontally positioned across the frame 1 and can slide towards the center of the frame 1 in an inclined state; the assembly module 4 is horizontally positioned on the top of the frame 1, and the assembly module 4 is provided with two assembly plates 41 that can move closer or further apart and elastic clip units 42 provided on each assembly part; when the battery pack is inserted into the assembly section, the assembly plate 41 can be vertically locked and slid in the assembly section under the limitation of the elastic clip units 42 and can slide axially along the axis of the first limiting rod 21.

[0036] When multiple fuel cell stacks need to be efficiently stacked and assembled, the first step is to adjust the radial position of multiple first limiting rods 21 according to parameters such as the length and width of the stacks to be assembled, until the defined assembly area size precisely matches the size of the stacks to be assembled, and then fix the first limiting rods 21 in place. Subsequently, the operator inserts multiple stacks into the assembly area at intervals, ensuring that each stack is positioned and corrected by the first limiting rods 21 during insertion, thereby ensuring that the stacks remain vertical, parallel, and equidistant, preventing skewing or poor contact.

[0037] When the preset number of battery stacks is reached within the assembly area, the correction module 3 is activated, causing the two sets of correction modules 3 to move at an angle towards the top two corners of the multiple battery stacks, and to perform secondary correction on the two corners to maintain their vertical posture. Finally, the grouping module 4 is activated, driving the two grouping plates 41 pieces to move symmetrically towards each other in the lateral direction. Through symmetrical compression, the multiple spaced battery stacks are pushed towards the center simultaneously, achieving tight bonding between the battery stacks and forming a battery pack with neat end faces and consistent arrangement. After grouping is completed, the grouping module 4 is driven upward by an external longitudinal drive mechanism, causing the assembled battery stacks to detach from the limiting area and accurately transfer them to the subsequent forming limiting frame or packaging process.

[0038] Through the design of multi-level limiting, flexible correction and symmetrical assembly module 4, the entire process of stacking, precise positioning and rapid assembly of battery stacks is controlled, which improves the assembly accuracy, efficiency and consistency, and significantly reduces the intensity of manual intervention. It is particularly suitable for the assembly of multi-specification and multi-batch fuel cell stacks.

[0039] See Figure 3 , Figure 7 and Figure 9 As shown: The limiting module 2 further includes a first slider 23 capable of driving the first limiting rod 21 to slide radially on the frame 1, a first locking member 24 capable of dynamically locking the sliding position of the first slider 23, and an adjusting part 25 capable of adjusting the rotation of the first limiting rod 21; when the first limiting rod 21 is adjusted to a first angle by the adjusting part 25, the first limiting rod 21 is in a planar limiting state; when the first limiting rod 21 is adjusted to a second angle by the adjusting part 25, the first limiting rod 21 is in a linear limiting state.

[0040] The frame 1 is also provided with multiple horizontal slide grooves 11 and inclined slide grooves 12 that can guide the first limiting rod 21 to slide horizontally.

[0041] There are two first sliders 23, which are respectively rotatably disposed at both ends of the first limiting rod 21; the first limiting rod 21 is slidably disposed in the horizontal slide groove 11 through the first sliders 23 disposed at both ends; each first slider 23 is also provided with a slot 231.

[0042] There are two first locking members 24, which are coaxially slidably disposed at both ends of the first limiting rod 21.

[0043] The adjustment part 25 is slidably disposed on the outer wall of the first limiting rod 21 and near the end of the first limiting rod 21. When the adjustment end of the adjustment part 25 is engaged with the slot 231, the first limiting rod 21 is in a locked state. When the adjustment end of the adjustment part 25 is away from the slot 231, the first limiting rod 21 is in a rotatable adjustment state.

[0044] When the size of the assembly area needs to be adaptively adjusted according to the size changes of the battery stack, the first locking member 24 is first activated to release the fixed connection between the first limiting rod 21 and the frame 1, making the first limiting rod 21 adjustable. Subsequently, according to the preset battery stack geometry, the axial position of each first limiting rod 21 is adjusted by the adjustment mechanism to set the assembly area size that adapts to the current assembly requirements. In the initial limiting state, the first limiting rod 21 is arranged at a first angle toward the center of the frame 1, and the side with the top support unit 22 faces the battery stack arrangement direction, ensuring that its sidewall can be flexibly supported and stably positioned by the top support unit 22 during battery stack insertion, thereby maintaining a consistent posture when the battery stack is vertically inserted.

[0045] After all battery stacks are inserted and positioned in sequence, if the assembly module 4 needs to be activated for lateral compression and assembly of the battery stacks, the adjustment unit 25 is activated to move its adjustment end away from the slot 231, thereby rotating the side with the top support unit 22 away from the battery stack. At this time, the original surface contact relationship between the first limiting rod 21 and the battery stack is transformed into an edge line contact relationship, significantly reducing the limiting contact area. This allows the battery stack to move smoothly with lower resistance during the subsequent compression and assembly process, avoiding problems such as scratching, jamming, and structural interference. The angle conversion of the first limiting rod 21 is adaptively adjusted according to the thickness of the battery stack. For example, when assembling thinner battery stacks, since the contact surface is smaller, there is no need to convert or adjust the first limiting rod 21.

[0046] The dual-state conversion structure of the first limiting rod 21 enables a functional transition from planar limiting support in the insertion stage to linear low-resistance limiting in the assembly stage. This effectively improves the insertion accuracy and assembly smoothness of the battery stack, reduces structural interference and resistance, and ensures the attitude stability and assembly efficiency of multiple battery stacks during the assembly process.

[0047] See Figure 4 As shown: The top support unit 22 is provided with a radially retractable guide bar 221 and a first spring 222 that can continuously push the guide bar 221 radially outward; the guide bar 221 is horizontally embedded and installed on one side of the first limiting rod 21 along the axis of the first limiting rod 21, and can be radially retracted on one side of the first limiting rod 21 under the continuous support of the first spring 222.

[0048] The top support unit 22 also includes two first telescopic rods 223. The two first telescopic rods 223 are arranged opposite each other and are vertically fixed to the rear side of the guide bar 221. The other ends of the two first telescopic rods 223 are fixedly connected to the first limiting rod 21. Two first springs 222 are provided, and the two first springs 222 are coaxially sleeved on the outside of the two first telescopic rods 223. The two ends of the two first springs 222 respectively abut against the adjacent surfaces of the guide bar 221 and the first limiting rod 21.

[0049] Limited by the maximum extension stroke of the first telescopic rod 223, the limiting surface of the guide strip 221 is always flush with the side wall of the first limiting rod 21, thus providing a stable and continuous horizontal limiting plane for the side wall of the battery stack during battery stack insertion and initial limiting. Through this structural design, while the first limiting rod 21 performs its circumferential limiting and supporting function for the battery stack, the guide strip 221 can achieve the same rotational or resetting action as the first limiting rod 21 without undergoing significant extension or retraction displacement.

[0050] When the first limiting rod 21 rotates to change its limiting posture, for example, from surface contact to line contact, the guide strip 221 is compressed during its contact with the side wall of the battery stack and automatically retracts under the elastic drive of the first telescopic rod 223. This effectively avoids excessive friction and interference caused by continuous contact between the limiting surface and the battery stack during rotation. This design ensures smooth retraction and stable fit of the guide strip 221 in dynamic adjustment, improving the overall durability and operational efficiency of the structure.

[0051] By using the flush limiting cooperation between the guide bar 221 and the first limiting rod 21 and its automatic retraction function under pressure, the limiting surface can adapt to changes during the limiting and adjustment process, effectively reducing the frictional travel between the limiting component and the battery stack, and improving the coordination of the limiting structure and the smoothness of the assembly process.

[0052] See Figure 4 As shown: The limiting surface of the guide strip 221 is also provided with a damping patch 224.

[0053] The damping patch 224 is used to effectively stabilize and maintain the initial insertion posture of the battery stack by increasing the coefficient of friction between the battery stack and the contact surface. The patch material possesses flexibility and high frictional properties, providing adhesion damping support without damaging the battery stack surface, preventing the battery stack from tilting, shifting, or collapsing due to gravity when not assembled. It is particularly suitable for adverse operating conditions such as a high center of gravity of the battery stack, unstable insertion speed, or minor deviations in the initial positioning gap.

[0054] See Figure 3 As shown: The limiting module 2 also includes a straightening pressure plate 26 capable of longitudinally limiting multiple battery stacks; the straightening pressure plate 26 is horizontally arranged on the top of the frame 1 along the long side direction of the frame 1.

[0055] The straightening pressure plate 26 consists of a gripping part 261 and a rib 262 connected in sequence, with a pressure plate 263 vertically arranged below the rib 262. The rib 262 is configured as a vertical guide structure, and the pressure plate 263 connected to its lower end is used to apply uniform straightening pressure to the top of the battery stack. This straightening pressure plate 26 assembly is installed in a horizontal slide groove 11 provided in the middle of the top of the frame 1, and can slide and adjust in the slide groove in the vertical direction.

[0056] After the battery stacks are inserted and their edges and corners are straightened, if further longitudinal position adjustments and posture corrections are needed for the top, the operator simply needs to manually hold the grip 261, guide the ribs 262 into the groove, and push the ribs 262 downwards in the vertical direction, causing the pressure plate 263 to press down until it is in full contact with the top surfaces of multiple battery stacks. Through this structure, the pressure plate 263 can apply a vertical clamping force to the entire battery stack, effectively unifying the top elevation of each battery stack and achieving highly consistent longitudinal correction.

[0057] See Figure 5 As shown: The correction module 3 is provided with a second limiting rod 31 that can slide horizontally toward the middle of the frame 1 in a radial direction and a correction groove 32 that is inclinedly opened on the side wall of the second limiting rod 31.

[0058] The correction groove 32 is opened at a right angle; the correction module 3 also includes a second slider 33 that can guide the second limiting rod 31 to slide in the inclined slide groove 12 and a second locking member 34 that can dynamically lock the sliding stroke of the second correction groove 32.

[0059] When fine-tuning and precise correction of the end position of the battery stack after insertion is required, the second locking member 34 is first driven to release its locking connection with the second limiting rod 31, allowing the second limiting rod 31 to enter an adjustable state. Subsequently, the sliding adjustment mechanism drives the second limiting rod 31 to tilt and slide towards the corner of the battery stack arrangement area, gradually advancing it until the correction groove 32 at its end makes precise contact with the edge of the corresponding battery stack. After the correction groove 32 is positioned and fitted against the corner of the target battery stack, a moderate clamping force can be applied to the second limiting rod 31. Utilizing the shape fit between the correction groove 32 and the battery stack, a small directional correction force is applied to compensate for battery stack misalignment or insertion tolerance.

[0060] During this process, the structure and shape of the correction groove 32 can be designed to match the edge and corner structure of the battery stack, ensuring the positioning accuracy of the contact and the force transmission efficiency of the correction, thereby achieving precise positioning correction without causing damage to the battery stack or clamping interference.

[0061] By setting a correction groove 32 with a shape matching structure and an adjustable second limiting rod 31, the function of fine-tuning and correcting the position tolerance during the battery stack insertion process is realized, which effectively improves the flatness and alignment accuracy of the overall battery stack arrangement and provides high consistency for subsequent grouping and compaction and group positioning.

[0062] See Figure 9 As shown: The elastic clip unit 42 is provided with two clips 421 that can move closer or further apart and a second spring 422 that can continuously support the two clips 421 moving further apart; the clips 421 are also provided with a guide rod 423 that can guide the two clips 421 to retract towards each other on their own.

[0063] The elastic clip unit 42 further includes a fixing plate 424, a slide rail 425 that guides the two clip parts 421 to slide horizontally towards each other, and a second telescopic rod 426 that limits the maximum extension stroke of the two clip parts 421. The slide rail 425 is fixedly mounted horizontally on one side of the assembled plate 41. The two clip parts 421 are slidably mounted on the slide rail 425. The fixing plate 424 is vertically mounted in the middle of the slide rail 425. Two second telescopic rods 426 are provided, and the two second telescopic rods 426 are coaxially and symmetrically arranged on both sides of the fixing plate 424, and the extension ends of the two telescopic rods are respectively fixedly connected to the two clip parts 421. Two second springs 422 are provided, and the two second springs 422 are coaxially sleeved and installed on the outside of the two telescopic rods.

[0064] The combined module 4 also includes a linear driver capable of synchronously driving the two combined boards 41 to move closer to each other.

[0065] In the non-installed state, the two clamping parts 421 of the assembly plate 41 are extended to their maximum stroke under the continuous support of the second spring 422, maintaining a ready posture that matches the reserved distance of the assembly position. When it is necessary to install the assembly plate 41 into the adjusted assembly area to facilitate the subsequent pressing and assembly of the battery stack, the operator only needs to hold the assembly plate 41 and press it vertically towards the assembly position between the multiple first limiting rods 21. During the pressing process, the two clamping parts 421 slide along their respective guide rods 423 and tilt and retract towards each other under the structural limiting constraint.

[0066] As the pressing depth increases, the snap-fit ​​end of the clip 421 gradually slides to the corresponding position on the outer wall of the first limiting rod 21, ultimately achieving an elastic snap-fit ​​between the snap-fit ​​end of the clip 421 and the first limiting rod 21, thus completing the stable installation of the assembly plate 41. This installation process is a tool-free, rapid assembly process that does not rely on external fasteners, offering high ease of operation and repeatability.

[0067] By setting a flexible double-clamping part 421 on the assembly plate 41 and cooperating with a guide sliding design, the assembly plate 41 can be quickly positioned and stably fastened in the assembly area, which significantly simplifies the installation process and improves assembly efficiency.

[0068] See Figure 9 and Figure 10 As shown: The clamping part 421 includes a third slider 4211, a clamping plate 4212, and a bayonet 4213; the clamping plate 4212 is vertically fixed on one side of the third slider 4211; the bayonet 4213 is opened through the clamping plate 4212; the guide rod 423 is fixedly installed at the lower end of the clamping plate 4212 in an inclined state and is inclined towards the third slider 4211.

[0069] The bayonet 4213, in a V-shape, is located on the clip plate 4212 and has a guiding slope and positioning for quick engagement. During the longitudinal pressing installation of the assembly plate 41, since the guide rod 423 is inclined toward the third slider 4211, when longitudinal pressure is applied, the two clip plates 4212 on the assembly plate 41, guided by the guide rod 423, will have their outer walls first contacting the first limiting rod 21, and will continue to slide inclinedly along the guide rod 423 during subsequent continuous pressing.

[0070] As the pressing depth gradually increases, the V-shaped latch 4213 on the clamping plate 4212 continuously slides and gradually aligns with the first limiting rod 21. When the V-shaped latch 4213 slides to the engagement area with the first limiting rod 21, the third slider 4211 automatically pushes outward along a preset path under the elastic force of the second spring 422, ultimately forming a stable engagement with the second limiting rod 31. During this process, the various structures achieve interference-free self-alignment, rapid positioning, and elastic limiting cooperation, completing the precise fastening operation of the mating plate 41.

[0071] By using the inclined setting of the guide rod 423 and the coordinated cooperation of the V-shaped bayonet 4213 structure, combined with the self-springing and locking mechanism of the third slider 4211 under the action of the second spring 422, the assembly plate 41 is effectively aligned and locked under longitudinal pressing, which not only improves the modular assembly efficiency and ease of operation, but also enhances the structural stability and reliability of the connection parts.

[0072] This invention can not only accurately correct multiple battery stacks, but also efficiently press multiple battery stacks together.

[0073] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A hydrogen fuel cell stack assembly apparatus, characterized in that, include: frame; The limiting module is horizontally mounted across the frame; the limiting module is provided with multiple sets of first limiting rods that can slide horizontally toward the center of the frame; the multiple sets of first limiting rods enclose an assembly area for assembling the battery stack; each set of first limiting rods is also embedded with a top support unit that can elastically limit the battery stack on its sidewall. The correction module is provided in two sets, and the two sets of correction modules are horizontally arranged across the frame; The assembly module is horizontally mounted on the top of the frame. The assembly module has two assembly plates that can move closer or further apart and elastic clip units on each assembly plate. The limiting module further includes a first slider capable of driving the first limiting rod to slide radially on the frame, a first locking member capable of dynamically locking the sliding position of the first slider, and an adjustment part capable of adjusting the rotation of the first limiting rod. The top support unit is provided with a radially retractable guide bar and a first spring that can continuously radially push the guide bar out; the guide bar is horizontally embedded and installed on one side of the first limiting rod along the axis of the first limiting rod. The elastic clamping unit is provided with two clamping parts that can move closer or further apart and a second spring that can continuously support the two clamping parts moving further apart. The clamping parts are also provided with guide rods that can guide the two clamping parts to retract towards each other. The clamping parts include a third slider, a clamping plate, and a latch. The clamping plate is vertically fixed on one side of the third slider. The latch is opened through the clamping plate. The guide rod is fixedly installed at the lower end of the clamping plate in an inclined state and is inclined towards the third slider.

2. The hydrogen fuel cell stack assembly device according to claim 1, characterized in that, The guide strip is also fitted with a damping patch on its limiting surface.

3. The hydrogen fuel cell stack assembly device according to claim 1, characterized in that, The limiting module also includes a corrective pressure plate capable of longitudinally limiting multiple battery stacks; the corrective pressure plate is horizontally disposed on the top of the frame along the long side of the frame.

4. The hydrogen fuel cell stack assembly device according to claim 1, characterized in that, The correction module is provided with a second limiting rod that can slide horizontally toward the center of the frame in a radial direction and a correction groove that is inclinedly opened on the side wall of the second limiting rod.

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