Liftable vacuum adsorption device for grabbing large-breadth fuel cell assembly

Abstract

The invention relates to a liftable vacuum adsorption device for grabbing a large-breadth fuel cell assembly. The liftable vacuum adsorption device comprises a clamp frame; the robot flange connecting piece is used for being connected with an upper mechanical arm; the lifting adsorption assembly is connected with the clamp frame through a lifting driving assembly, the lifting adsorption assembly comprises a large-area low-pressure adsorption plate and a distributed small suction cup, and a pore plate type suction cup with a double-layer collaborative adsorption structure is formed; the visual detection assembly is arranged on the clamp frame and used for recognizing the edge, the position and the angular deviation of the to-be-grabbed assembly; the laser range finder is arranged on the clamp frame and used for detecting the distance between the liftable adsorption assembly and the surface of the assembly in real time; and the control assembly is electrically connected with the lifting driving assembly and the vacuum generator. Compared with the prior art, the device has the advantages that differential adsorption and assembly protection can be realized; uniform adsorption and high-precision positioning are realized; the system is intelligent and flexible in operation, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fuel cell vacuum suction, and particularly relates to a liftable vacuum suction device for grabbing large-format fuel cell assemblies. BACKGROUND

[0002] Hydrogen energy is considered as an important part of future energy system due to its high energy density, renewability and zero carbon emission. Among them, hydrogen fuel cell, as a key technology path for hydrogen energy utilization, has been widely used in transportation, fixed power supply and portable devices. Fuel cell converts hydrogen and oxygen into electricity through electrochemical reaction, and its core components mainly include membrane electrode assembly (MEA) and bipolar plate (BPP). Among them, MEA is composed of proton exchange membrane, catalyst layer and gas diffusion layer, and is the core area of electrochemical reaction; BPP bears the functions of gas distribution, electron conduction and heat management. The manufacturing precision and structural integrity of the above components have a decisive influence on the output performance and service life of fuel cells. With the popularization and application of fuel cells in heavy commercial vehicles, fixed power supply and other scenarios, the demand for high power and high energy density is increasing, which promotes the development and manufacturing of large-format MEA and BPP to become an industry trend. However, large-format fuel cell assemblies face many challenges in manufacturing, handling and assembly. Due to the increase in size, complex structure and insufficient local stiffness, the assembly is prone to warping, deformation or surface damage during handling, especially the carbon paper diffusion layer in MEA, which is fragile and extremely sensitive to external contact force, and any improper contact can cause micro-cracks or delamination, which seriously affects the stacking consistency and electrochemical performance. Traditional vacuum suction or mechanical clamping methods often have difficulty in balancing suction uniformity and structural lightweight, which limits their application in large-format assembly grabbing. At present, there are many fuel cell-related grabbing and assembly devices.

[0003] Chinese patent CN220484674U discloses an electrolytic water chip gripping device, which uses a vacuum adsorption component and a groove structure to position and transport the chip, achieving a certain adsorption accuracy. CN216971464U proposes a fuel cell gas diffusion layer forming device, which uses a bottom membrane strip as a substrate to improve the yield of carbon paper slices and reduce damage. CN114204091A describes a rapid assembly device for fuel cell stacks, which uses a vacuum suction cup combined with a conveyor track to achieve rapid stacking of MEA and BPP, improving production efficiency. However, the above technical solutions still have obvious limitations when applied to large-format fuel cell components: insufficient adsorption area leads to uneven support, the overall structure is bulky and has poor adjustability, limited adaptability to components of different sizes and shapes, and it is difficult to maintain the flatness and stability of the components during the gripping process. Therefore, there is an urgent need to propose a liftable vacuum adsorption device for gripping large-format fuel cell modules. Through lightweight structural design and adjustable adsorption units, it can achieve flexible gripping and stable handling of modules of different specifications, which can not only ensure the integrity and flatness of the modules, but also improve assembly accuracy and production efficiency, and meet the requirements of high quality and high reliability in the modern fuel cell manufacturing and assembly process. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology by providing a liftable vacuum adsorption device for gripping large-format fuel cell components, achieving differentiated adsorption and component protection; uniform adsorption and high-precision positioning; intelligent and flexible system operation; and improved production efficiency. The objective of this invention can be achieved through the following technical solutions: This invention provides a liftable vacuum adsorption device for gripping large-format fuel cell modules, comprising: Fixture frame; A robot flange connector is mounted on the fixture frame and is used to connect to the upper robotic arm. A liftable adsorption assembly is connected to the fixture frame via a lifting drive assembly. The liftable adsorption assembly includes a large-area low-pressure adsorption plate and distributed small suction cups to form a perforated plate type suction cup with a double-layer synergistic adsorption structure. It is set in the fixture frame and includes multiple feature-matching suction heads and a vacuum generator connected to the feature-matching suction heads. A visual inspection component, mounted on the fixture frame, is used to identify the edge, position, and angular deviation of the component to be grasped, and is communicatively connected to the control component. A laser rangefinder, mounted on the clamp frame, is used to detect the distance between the liftable adsorption component and the component surface in real time, and is communicatively connected to the control component. The control component is electrically connected to the lifting drive component and the vacuum generator. The control component is configured to: when the component to be grasped is a BPP, control the lifting drive component to drive the liftable adsorption component to move downward, so that the large-area low-pressure adsorption plate adheres to the surface of the component for adsorption; when the component to be grasped is an MEA, control the lifting drive component to drive the liftable adsorption component to move upward, so that the liftable adsorption component maintains a gap with the surface of the component, and is gently adsorbed by the distributed small suction cups.

[0005] Furthermore, the feature-matching suction head is made of flexible TPU material, and the contact surface has suction grooves that match the shape of the bipolar plate flow channel. Multiple vacuum suction holes are evenly distributed within these suction grooves, ensuring stability and anti-slip capability during the adsorption process.

[0006] Furthermore, the lifting drive assembly is a piston cylinder or a lead screw drive structure. Furthermore, it also includes a convertible adsorption component, which is connected to a multi-channel vacuum pipeline via a gas path switching valve to enable switching between centralized adsorption mode and zoned adsorption mode.

[0007] Furthermore, the clamp frame is composed of aluminum alloy profiles and carbon fiber structure. Furthermore, the clamp frame includes horizontal aluminum profiles and vertical aluminum profiles, and the intersection of the horizontal aluminum profiles and the vertical aluminum profiles is fastened together by corner brackets.

[0008] Furthermore, the visual inspection component uses a CCD camera, combined with an image processing system, to monitor the actual position, angle, and edge contour of the component before and after adsorption in real time, thereby realizing the recognition of grasping posture errors and subsequent correction processes.

[0009] Furthermore, the robot flange connector includes a flange connecting plate, bolts, and a gasket disposed between the bolts and the flange connecting plate. This is used to improve connection reliability and vibration resistance. Part of the robot flange connector's frame is fixed to the support frame by reinforcing ribs, bolts, and nuts to achieve overall rigidity.

[0010] Furthermore, the vacuum generator is connected to the feature-matching suction head via an air tube, an air tube converter, and fittings. This achieves a unified vacuum supply capability and allows independent control of the opening and closing of the suction cup array adsorption units, adapting to different working conditions.

[0011] Furthermore, the control component is a PLC control unit. The control component integrates visual feedback, laser ranging feedback, and execution unit (adsorption cylinder, vacuum controller) control logic. The working process is as follows: The control component identifies the current component type (by visually detecting the component and determining its size); based on the identification result, it automatically switches the adsorption mode (large area / small suction cup); it controls the lifting drive component to drive the adsorption plate up or down; it controls the gripping height in conjunction with laser rangefinder data; after adjusting the posture, it completes the adsorption and transports the plate to the stacking position.

[0012] The working process of this device is as follows: S1: Initial Preparation and Component Identification When a fuel cell assembly needs to be grasped, the device first enters a ready state. The vision inspection component mounted on the clamping frame begins to operate. It uses a CCD camera and a rangefinder to capture images and the distance to the assembly to be grasped, and then analyzes the data through an image processing module.

[0013] Identification content: Identify the component type (BPP / MEA), edge contour, precise location, and angular deviation. BPP typically has distinct flow channel geometry and high rigidity, while MEA has a relatively flat surface and is made of fragile material.

[0014] Information transmission: The identification results (including component type and location coordinates) are transmitted to the control component in real time.

[0015] S2: Decision-making and Promotion / Demotion Positioning The control component executes a preset grasping strategy based on the component type information provided by the vision inspection component, and controls the lifting drive component's actions.

[0016] Decision: The control component determines that the current component is BPP / MEA.

[0017] Positioning control: For BPP (high-strength component): The control component instructs the lifting drive component to move the entire liftable adsorption component downwards. Simultaneously, a laser rangefinder monitors the distance between the adsorption plate and the BPP surface in real time, ensuring a smooth descent until it is fully in contact with the BPP surface. This state, called "low-position contact," aims to maximize the contact area and thus achieve stable adsorption force.

[0018] For MEA (fragile component): The control component instructs the lifting drive component to raise the entire liftable adsorption component, maintaining a safe gap (typically 1-3mm) between it and the MEA surface. A laser rangefinder monitors and ensures precise control of this gap in real time. This position is called "high-position distance," and its core purpose is to avoid pressure damage to the fragile carbon paper layer and catalyst layer.

[0019] S3: Vacuum Adsorption and Grasping Execution The vacuum adsorption system is activated after the liftable adsorption component reaches the predetermined position.

[0020] Vacuum generation: The vacuum generator starts working and generates negative pressure.

[0021] Differential adsorption: Under BPP (Browser-Produced Plate) conditions, because the adsorption plates are tightly fitted, the vacuum negative pressure acts on the entire flow channel area of ​​the BPP through the vacuum suction port on the feature-matched suction head. The contact surface design of the feature-matched suction head matches the shape of the BPP flow channel, ensuring adsorption stability and anti-slip effect.

[0022] In MEA (Mechanical Absorber) operation, the adsorption plate is in a high position, and the MEA surface is primarily adsorbed by distributed small suction cups in a "touch" manner. The control components may selectively open only a portion of the vacuum line through a gas path switching valve to further reduce the contact area and pressure, achieving ultimate protection for the MEA.

[0023] S4: Handling and Stacking Assembly After successfully grabbing the component, the device enters the handling phase.

[0024] Handling: The upper robotic arm, connected to the device via the robot flange connector, begins to move and smoothly transports the components to the fuel cell stack assembly station.

[0025] Precise alignment: Throughout the handling process, the vision inspection component may work continuously to assist in the final fine-tuning and alignment, ensuring that the component is precisely aligned with the lower layer component when stacked (especially the flow channels of BPP need to be aligned).

[0026] S5: Release and Reset Once the component is placed in the target location, the process enters its final stage.

[0027] Release: The control component commands the vacuum generator to stop working and controls the gas path switching valve to introduce positive air pressure, quickly releasing the vacuum and allowing the component to desorb smoothly.

[0028] Reset: The lifting drive component drives the lifting and attaching component to reset to the initial safe height, ready to perform the next grabbing task.

[0029] Compared with the prior art, the present invention has the following advantages: (1) Achieve differentiated adsorption and component protection. It can intelligently identify and adapt to fuel cell components with different characteristics (rigid BPP and fragile MEA) and execute differentiated adsorption strategies.

[0030] For BPP (High Strength Panel): A "low-position bonding" strategy is adopted, which uses a lifting mechanism to make the large-area adsorption plate tightly bonded to the surface of the panel, providing stable and strong adsorption force, ensuring reliability during transportation, and preventing slippage or detachment. For MEAs (fragile modules): A "high-position gentle touch" strategy is employed. The lifting mechanism maintains a safe gap between the adsorption plate and the module surface, allowing for localized and gentle adsorption only through distributed small suction cups. Contact pressure is strictly limited (<5 N / cm²). 2 This effectively avoids irreversible damage such as compaction, peeling, or deformation to the carbon paper diffusion layer, catalyst layer, and proton exchange membrane.

[0031] (2) Achieving uniform adsorption and high-precision positioning. Featuring a dual-layer synergistic adsorption structure, the device combines a "large-area low-pressure adsorption plate" and "distributed small suction cups," forming a multi-level adsorption mechanism. This design can evenly distribute the adsorption force across the entire surface of the large-format component, effectively reducing local stress concentration and preventing warping or deformation of the component during handling due to uneven force. It is particularly suitable for thin, large-area MEAs and BPPs. The feature-matching suction head is 3D printed using TPU flexible material, with the contact surface customized according to the flow channel characteristics of the bipolar plate. This contour-following design ensures a high degree of fit between the suction head and the component surface, greatly increasing the effective adsorption area and friction. On the one hand, it provides excellent adsorption stability and prevents slippage; on the other hand, it ensures precise alignment of the flow channels of adjacent bipolar plates during stacking assembly, thereby guaranteeing the smooth distribution of reactant gases and coolant inside the fuel cell stack, improving the assembly accuracy and final performance of the stack.

[0032] (3) The system features intelligent and flexible operation, improving production efficiency. The convertible adsorption component allows for rapid switching between "centralized adsorption" and "regional adsorption" modes via multi-channel vacuum pipelines and gas switching valves. This means it can flexibly adapt to components of different sizes, shapes, or with special local structures without requiring hardware replacement. The system integrates a laser rangefinder and a vision detection component, all under unified control by a PLC unit. The laser rangefinder provides precise distance feedback, ensuring accurate control of the lifting position; the vision detection component is responsible for identifying the component type, position, and attitude, achieving closed-loop control. Attached Figure Description

[0033] Figure 1 Schematic diagram of a liftable vacuum adsorption device for gripping large-format fuel cell modules Figure 1 ; Figure 2 Schematic diagram of a liftable vacuum adsorption device for gripping large-format fuel cell modules Figure 2 ; Figure 3 This is a schematic diagram of the feature matching suction head; Figure 4 This is a schematic diagram showing the lifting and lowering state changes of a perforated plate suction cup (BPP condition). Figure 5 This is a schematic diagram showing the lifting and lowering state changes of the perforated plate suction cup (MEA condition). Figure 6 This is a schematic diagram illustrating the control principle of the control component.

[0034] Reference numerals: 1-Robot flange connector; 2-Clamping frame; 3-Corner code; 4-Perforated plate suction cup; 5-Vacuum generator; 6-Lifting drive assembly; 7-Laser rangefinder; 8-Vision inspection assembly; 9-Feature matching suction head; 10-Vacuum suction port. Detailed Implementation

[0035] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Component models, material names, connection structures, control methods, algorithms, and other features not explicitly described in this technical solution are considered common technical features disclosed in the prior art.

[0036] Example 1 This embodiment provides a liftable vacuum adsorption device for gripping large-format fuel cell modules, such as... Figures 1-6 As shown, it includes: Fixture frame 2; Robot flange connector 1 is disposed on the fixture frame 2 and is used to connect with the upper robotic arm; The liftable adsorption assembly is connected to the clamp frame 2 via the lifting drive assembly 6. The liftable adsorption assembly includes a large-area low-pressure adsorption plate and distributed small suction cups to form a perforated plate type suction cup 4 with a double-layer synergistic adsorption structure. It is set in the clamp frame 2 and includes multiple feature-matching suction heads 9 and a vacuum generator 5 connected to the feature-matching suction heads 9. A visual inspection component 8 is disposed on the fixture frame 2 and is used to identify the edge, position and angular deviation of the component to be grasped, and is communicatively connected to the control component. A laser rangefinder 7 is mounted on the clamp frame 2 and is used to detect the distance between the liftable adsorption component and the component surface in real time, and is communicatively connected to the control component. The control component is electrically connected to the lifting drive component 6 and the vacuum generator 5; The control component is configured to: when the component to be grasped is a BPP, control the lifting drive component 6 to drive the liftable adsorption component to move downward, so that the large-area low-pressure adsorption plate adheres to the surface of the component for adsorption; when the component to be grasped is an MEA, control the lifting drive component 6 to drive the liftable adsorption component to move upward, so that the liftable adsorption component maintains a gap with the surface of the component, and is gently adsorbed by the distributed small suction cups.

[0037] Example 2 This embodiment provides a liftable vacuum adsorption device for gripping large-format fuel cell modules, such as... Figures 1-6 As shown, it includes: Fixture frame 2; Robot flange connector 1 is disposed on the fixture frame 2 and is used to connect with the upper robotic arm; The liftable adsorption assembly is connected to the clamp frame 2 via the lifting drive assembly 6. The liftable adsorption assembly includes a large-area low-pressure adsorption plate and distributed small suction cups to form a perforated plate type suction cup 4 with a double-layer synergistic adsorption structure. It is set in the clamp frame 2 and includes multiple feature-matching suction heads 9 and a vacuum generator 5 connected to the feature-matching suction heads 9. A visual inspection component 8 is disposed on the fixture frame 2 and is used to identify the edge, position and angular deviation of the component to be grasped, and is communicatively connected to the control component. A laser rangefinder 7 is mounted on the clamp frame 2 and is used to detect the distance between the liftable adsorption component and the component surface in real time, and is communicatively connected to the control component. The control component is electrically connected to the lifting drive component 6 and the vacuum generator 5; The control component is configured to: when the component to be grasped is a BPP, control the lifting drive component 6 to drive the liftable adsorption component to move downward, so that the large-area low-pressure adsorption plate adheres to the surface of the component for adsorption; when the component to be grasped is an MEA, control the lifting drive component 6 to drive the liftable adsorption component to move upward, so that the liftable adsorption component maintains a gap with the surface of the component, and is gently adsorbed by the distributed small suction cups.

[0038] In a specific embodiment, the feature-matching suction head 9 is made of TPU flexible material, and the contact surface has a suction groove that matches the shape of the bipolar plate flow channel. Multiple vacuum suction holes 10 are evenly distributed within the suction groove. This ensures stability and anti-slip capability during the adsorption process.

[0039] In a specific embodiment, the lifting drive component 6 is a piston cylinder or lead screw transmission structure. In a specific embodiment, a convertible adsorption component is also included. The convertible adsorption component is connected to a multi-channel vacuum pipeline through a gas path switching valve to realize the switching between centralized adsorption mode and zoned adsorption mode.

[0040] In a specific embodiment, the clamp frame 2 is composed of aluminum alloy profiles and carbon fiber structure. In a specific embodiment, the clamp frame 2 includes a horizontal aluminum profile and a vertical aluminum profile, and the intersection of the horizontal aluminum profile and the vertical aluminum profile is fastened together by a corner bracket 3.

[0041] In a specific implementation, the visual inspection component 8 uses a CCD camera, combined with an image processing system, to monitor the actual position, angle and edge contour of the component before and after adsorption in real time, thereby realizing the recognition of grasping posture error and subsequent correction process.

[0042] In a specific embodiment, the robot flange connector 1 includes a flange connecting plate, bolts, and a gasket disposed between the bolts and the flange connecting plate. This improves connection reliability and vibration resistance. Part of the frame of the robot flange connector 1 is fixed to the support frame by reinforcing ribs, bolts, and nuts, achieving overall rigidity.

[0043] In a specific embodiment, the vacuum generator 5 is connected to the feature-matching suction head 9 via an air pipe, an air pipe converter, and fittings. This achieves a unified vacuum supply capability and allows independent control of the suction cup array adsorption unit's opening and closing, adapting to different working conditions.

[0044] In a specific implementation, the control component is a PLC control unit. The control component integrates visual feedback, laser ranging feedback, and control logic for the execution unit (adsorption cylinder, vacuum controller). The working process is as follows: The control component identifies the current component type (by visually detecting component 8 and determining the component size); based on the identification result, it automatically switches the adsorption mode (large area / small suction cup); it controls the lifting drive component 6 to raise or lower the adsorption plate; it coordinates with the laser rangefinder 7 to control the gripping height; after adjusting the posture, it completes the adsorption and transports the component to the stacking position.

[0045] The working process of this device is as follows: S1: Initial Preparation and Component Identification When a fuel cell assembly needs to be grasped, the device first enters a ready state. The vision inspection component mounted on the clamping frame begins to operate. It uses a CCD camera and a rangefinder to capture images and the distance to the assembly to be grasped, and then analyzes the data through an image processing module.

[0046] Identification content: Identify the component type (BPP / MEA), edge contour, precise location, and angular deviation. BPP typically has distinct flow channel geometry and high rigidity, while MEA has a relatively flat surface and is made of fragile material.

[0047] Information transmission: The identification results (including component type and location coordinates) are transmitted to the control component in real time.

[0048] S2: Decision-making and Promotion / Demotion Positioning The control component executes a preset grasping strategy based on the component type information provided by the vision inspection component, and controls the lifting drive component's actions.

[0049] Decision: The control component determines that the current component is BPP / MEA.

[0050] Positioning control: For BPP (high-strength component): The control component instructs the lifting drive component to move the entire liftable adsorption component downwards. Simultaneously, a laser rangefinder monitors the distance between the adsorption plate and the BPP surface in real time, ensuring a smooth descent until it is fully in contact with the BPP surface. This state, called "low-position contact," aims to maximize the contact area and thus achieve stable adsorption force.

[0051] For MEA (fragile component): The control component instructs the lifting drive component to raise the entire liftable adsorption component, maintaining a safe gap (typically 1-3mm) between it and the MEA surface. A laser rangefinder monitors and ensures precise control of this gap in real time. This position is called "high-position distance," and its core purpose is to avoid pressure damage to the fragile carbon paper layer and catalyst layer.

[0052] S3: Vacuum Adsorption and Grasping Execution The vacuum adsorption system is activated after the liftable adsorption component reaches the predetermined position.

[0053] Vacuum generation: The vacuum generator starts working and generates negative pressure.

[0054] Differential adsorption: Under BPP (Browser-Produced Plate) conditions, because the adsorption plates are tightly fitted, the vacuum negative pressure acts on the entire flow channel area of ​​the BPP through the vacuum suction port on the feature-matched suction head. The contact surface design of the feature-matched suction head matches the shape of the BPP flow channel, ensuring adsorption stability and anti-slip effect.

[0055] In MEA (Mechanical Absorber) operation, the adsorption plate is in a high position, and the MEA surface is primarily adsorbed by distributed small suction cups in a "touch" manner. The control components may selectively open only a portion of the vacuum line through a gas path switching valve to further reduce the contact area and pressure, achieving ultimate protection for the MEA.

[0056] S4: Handling and Stacking Assembly After successfully grabbing the component, the device enters the handling phase.

[0057] Handling: The upper robotic arm, connected to the device via the robot flange connector, begins to move and smoothly transports the components to the fuel cell stack assembly station.

[0058] Precise alignment: Throughout the handling process, the vision inspection component may work continuously to assist in the final fine-tuning and alignment, ensuring that the component is precisely aligned with the lower layer component when stacked (especially the flow channels of BPP need to be aligned).

[0059] S5: Release and Reset Once the component is placed in the target location, the process enters its final stage.

[0060] Release: The control component commands the vacuum generator to stop working and controls the gas path switching valve to introduce positive air pressure, quickly releasing the vacuum and allowing the component to desorb smoothly.

[0061] Reset: The lifting drive component drives the lifting and attaching component to reset to the initial safe height, ready to perform the next grabbing task.

[0062] Components not described in detail in this embodiment are all existing components that can be purchased through public channels.

[0063] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A liftable vacuum adsorption device for gripping large-format fuel cell modules, characterized in that, include: Fixture frame (2); Robot flange connector (1) is disposed on the fixture frame (2) and is used to connect with the upper robotic arm; The liftable adsorption assembly is connected to the clamp frame (2) via the lifting drive assembly (6). The liftable adsorption assembly includes a large-area low-pressure adsorption plate and distributed small suction cups to form a perforated plate type suction cup (4) with a double-layer synergistic adsorption structure. It is set in the clamp frame (2) and includes multiple feature-matching suction heads (9) and a vacuum generator (5) connected to the feature-matching suction heads (9). A visual inspection component (8) is disposed on the fixture frame (2) for identifying the edge, position and angle deviation of the component to be grasped, and is communicatively connected to the control component; A laser rangefinder (7) is mounted on the clamp frame (2) to detect the distance between the liftable adsorption component and the component surface in real time and to communicate with the control component. The control component is electrically connected to the lifting drive component (6) and the vacuum generator (5); The control component is configured to: when the component to be grasped is a bipolar plate (BPP), control the lifting drive component (6) to drive the liftable adsorption component to move down, so that the large-area low-pressure adsorption plate adheres to the surface of the component for adsorption; when the component to be grasped is a membrane electrode assembly (MEA), control the lifting drive component (6) to drive the liftable adsorption component to move up, so that the liftable adsorption component maintains a gap with the surface of the component, and is lightly adsorbed by the distributed small suction cups.

2. The liftable vacuum adsorption device for grasping large-format fuel cell modules according to claim 1, characterized in that, The feature-matching suction head (9) is made of TPU flexible material, and the contact surface has a suction groove that matches the shape of the bipolar plate flow channel. Multiple vacuum suction holes (10) are evenly distributed in the suction groove to ensure stability and anti-slip capability during the adsorption process.

3. The liftable vacuum adsorption device for grasping large-format fuel cell modules according to claim 1, characterized in that, The lifting drive assembly (6) is a piston cylinder or lead screw transmission structure.

4. The liftable vacuum adsorption device for gripping large-format fuel cell modules according to claim 1, characterized in that, It also includes a convertible adsorption component, which is connected to a multi-channel vacuum pipeline via a gas path switching valve to enable switching between centralized adsorption mode and zoned adsorption mode.

5. A liftable vacuum adsorption device for gripping large-format fuel cell modules according to claim 1, characterized in that, The clamp frame (2) is composed of aluminum alloy profiles and carbon fiber structure.

6. A liftable vacuum adsorption device for grasping large-format fuel cell modules according to claim 1, characterized in that, The clamp frame (2) includes a horizontal aluminum profile and a vertical aluminum profile, and the intersection of the horizontal aluminum profile and the vertical aluminum profile is fastened together by a corner bracket (3).

7. A liftable vacuum adsorption device for gripping large-format fuel cell modules according to claim 1, characterized in that, The visual inspection component (8) uses a CCD camera and an image processing system to monitor the actual position, angle and edge contour of the component before and after adsorption in real time, so as to realize the recognition of grasping posture error and subsequent correction process.

8. A liftable vacuum adsorption device for gripping large-format fuel cell modules according to claim 1, characterized in that, The robot flange connector (1) includes a flange connecting plate, bolts, and a gasket disposed between the bolts and the flange connecting plate.

9. A liftable vacuum adsorption device for gripping large-format fuel cell modules according to claim 1, characterized in that, The vacuum generator (5) is connected to the feature-matching suction head (9) via a duct, a duct converter, and fittings.

10. A liftable vacuum adsorption device for grasping large-format fuel cell modules according to claim 1, characterized in that, The control component is a PLC control unit.

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