Membrane electrode detection device for fuel cell and method for assembling cell stack

Abstract

The embodiment of the invention provides a membrane electrode detection device for a fuel cell and an assembly method of a cell stack. The membrane electrode detection device for the fuel cell comprises a base, a grasping piece and a detection piece, the base comprises a base body, an X-axis truss and a Z-axis truss, the Z-axis truss is movably arranged on the X-axis truss in the length direction of the base, the base body is provided with a paper placement position, a membrane electrode placement position and a membrane electrode-paper placement stacking position which are arranged at intervals in the length direction of the base, the paper placement position is used for placing paper, and the membrane electrode-paper placement stacking position is used for stacking the paper placement position. The membrane electrode placing position is used for placing a membrane electrode, and the membrane electrode-paper placing stacking position is used for placing a membrane electrode pretreatment plate; the grabbing piece is movably arranged on the Z-axis truss in the vertical direction of the base. The detection piece is used for detecting the qualification of the membrane electrode. Therefore, the membrane electrode detection device for the fuel cell according to the embodiment of the invention has the advantages of simplifying the detection process and improving the performance of a fuel stack.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cells, and in particular to a membrane electrode detection device for a fuel cell and an assembling method of a battery stack using the membrane electrode detection device for a fuel cell. Background Art

[0002] Fuel cell stacks are mainly composed of bipolar plates, membrane electrodes, current collectors, end plates and other components. In order to achieve higher power and power density, fuel cell stacks are usually composed of hundreds of single cells connected in series, and are composed of multiple membrane electrodes and bipolar plates stacked in sequence.

[0003] Before assembling the fuel cell stack, the performance of the membrane electrode needs to be tested, such as air tightness test, thickness test and appearance test, so as to eliminate unqualified products. In particular, the air tightness of the membrane electrode determines the performance and life of the fuel cell. When performing air tightness testing, the test piece needs to contact the membrane electrode, which can easily lead to the collapse of the membrane electrode frame, thereby affecting the performance of the fuel cell stack. Summary of the invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present invention provides a membrane electrode detection device for a fuel cell. The membrane electrode detection device for a fuel cell has the advantages of simplifying the detection process and improving the performance of the fuel cell stack.

[0005] An embodiment of the present invention further provides a method for assembling a battery stack.

[0006] The membrane electrode detection device for a fuel cell according to an embodiment of the present invention comprises a base, a gripping member and a detection member.

[0007] The base includes a base body, an X-axis truss and a Z-axis truss, the Z-axis truss is movably arranged on the X-axis truss along the length direction of the base, the base body has a paper placement position, an electrode placement position and a membrane electrode-paper stacking position arranged at intervals along the length direction of the base, the paper placement position is used to place paper, the electrode placement position is used to place membrane electrodes, and the membrane electrode-paper stacking position is used to place membrane electrode pretreatment plates; the gripping member is movably arranged on the Z-axis truss along the up and down directions of the base so as to realize the movement and placement of the membrane electrode and the paper rack by the lateral movement of the Z-axis truss and the up and down movement of the gripping member; the detection member is arranged on the gripping member for detecting the qualification of the membrane electrode.

[0008] The fuel cell membrane electrode detection device of the embodiment of the present invention provides a paper shelf placement position on the base for placing paper shelves, and the membrane electrode-paper shelf stacking position is used for the stacking layer of paper shelves and membrane electrodes. In the detection, the problem of frame collapse of the membrane electrode during the detection can be prevented, and the problem of battery performance degradation caused by the obstruction of ion transmission in the battery due to the collapse of the membrane electrode is avoided. Therefore, the fuel cell membrane electrode detection device helps to improve the advantages of fuel cell electric propulsion performance.

[0009] At the same time, the paper shelf can effectively avoid the problem of adhesive adhesion due to overflow of membrane electrodes, which may occupy part of the active area, reduce the effective reaction area, and lead to the problem of reduced output power of the battery. Therefore, the paper shelf can further improve the performance of fuel cell propulsion.

[0010] In addition, the detection part can detect the quality of the membrane electrode during the membrane electrode stacking process. It effectively reduces the damage of the membrane electrode caused by external forces during the detection process. That is, the one-time loading of multiple membrane electrodes required for the fuel cell stack is completed at one time, which improves the assembly efficiency of the fuel cell. Therefore, the membrane electrode detection device for fuel cells has the advantages of simplifying the assembly process and saving costs.

[0011] Therefore, the membrane electrode detection device for a fuel cell according to the embodiment of the present invention has the advantages of improving the fuel electric propulsion performance and simplifying the assembly process.

[0012] In some embodiments, the gripping member includes a suction cup and a suction pump. The suction cup is provided with an airtight test hole connected to the disc cavity of the suction cup. The suction pump is connected to the disc cavity of the suction cup through the airtight test hole to achieve the movement and placement of the membrane electrode and the paper shelf by exhausting and sucking air.

[0013] In some embodiments, the suction cup includes a suction cup body and a sealing strip, the suction cup body is concave to form the cup cavity, and the sealing strip is arranged around the area of ​​the suction cup body close to the cup cavity.

[0014] In some embodiments, the detection member includes an airtightness detection element, and the airtightness detection element is arranged in the disc cavity of the suction cup to detect the airtightness of the membrane electrode.

[0015] In some embodiments, the inspection member includes a visual inspection element, and the visual inspection element is used to inspect the acceptability of the appearance of the membrane electrode.

[0016] In some embodiments, the detection member further includes a thickness detection element, and the thickness detection element is disposed on the suction cup to detect the thickness of the membrane electrode.

[0017] In some embodiments, the visual detection element includes a first imaging element and a second imaging element, wherein the first imaging element is disposed on the base, and the second imaging element is disposed on the gripping member to detect the double-sided appearance of the membrane electrode.

[0018] In some embodiments, the membrane electrode detection device for fuel cells further includes an identity information detection element, and the airtightness detection element is disposed on the suction cup to identify and track the identity information of the electrode piece.

[0019] In some embodiments, the base further has a waste position, and the membrane electrode-paper stacking position and the waste position are arranged on both sides of the electrode placement position.

[0020] In some embodiments, the paper shelf placement position, the electrode placement position and the membrane electrode-paper shelf stacking position are all provided with limiting devices extending along the Z axis to prevent the paper shelf and the membrane electrode from being skewed during the moving, placing and stacking process.

[0021] In some embodiments, the limiting device includes a plurality of vertical poles, the plurality of vertical poles are correspondingly arranged at the corners of the electrode, and the vertical poles are provided with guide grooves.

[0022] The battery stack assembly method of the embodiment of the present invention uses the above-mentioned fuel cell membrane electrode detection device to pre-treat the membrane electrode, and the assembly method includes the following steps:

[0023] The membrane electrode and the paper holder are alternately grasped by a gripping member for stacking. During the stacking process, the quality of the membrane electrode is simultaneously inspected by a detection member to complete the pretreatment of qualified membrane electrodes. The end plate is placed on the assembly station, and the bipolar plates and the membrane electrodes in the tested membrane electrode pretreatment plate are sequentially stacked and pressure-pressed. After the stacking is completed, the fuel cell bare stack is assembled by threading and fixing with screws. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a perspective view of a membrane electrode detection device for a fuel cell according to an embodiment of the present invention.

[0025] Figure 2 It is a front view of a membrane electrode detection device for a fuel cell according to an embodiment of the present invention.

[0026] Figure 3 It is a side view of a membrane electrode testing device for a fuel cell according to an embodiment of the present invention.

[0027] Figure 4 is a three-dimensional diagram of an X-axis truss, a Z-axis truss, and a gripper according to an embodiment of the present invention.

[0028] Figure 54 is a top view of a gripping member according to an embodiment of the present invention.

[0029] Reference numerals:

[0030] Base 1; seat body 11; X-axis truss 12; Z-axis truss 13;

[0031] Suction cup 2; suction cup body 21; sealing strip 22; airtight test hole 23;

[0032] Airtightness detection element 31; Visual detection element 32; Thickness detection element 33;

[0033] Limiting device 4. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0035] Reference below Figure 1-Figure 5 A membrane electrode testing device for a fuel cell and a method for assembling a cell stack according to an embodiment of the present invention are described.

[0036] The membrane electrode detection device for a fuel cell according to an embodiment of the present invention comprises a base 1 , a gripping member and a detection member.

[0037] The base 1 includes a base body 11, an X-axis truss 12 and a Z-axis truss 13. The Z-axis truss 13 is movably arranged on the X-axis truss 12 along the length direction of the base 1. The base body 11 has a paper shelf placement position, an electrode placement position and a membrane electrode-paper shelf stacking position arranged at intervals along the length direction of the base 1. The paper shelf placement position is used to place paper shelves, the electrode placement position is used to place membrane electrodes, and the membrane electrode-paper shelf stacking position is used to place membrane electrode pretreatment plates; a gripping member is movably arranged on the Z-axis truss 13 along the up and down directions of the base 1 so as to realize the movement and placement of the membrane electrode and the paper shelf by the lateral movement of the Z-axis truss 13 and the up and down movement of the gripping member; a detection member is arranged on the gripping member for detecting the qualification of the membrane electrode.

[0038] The membrane electrode detection device for fuel cells of the embodiment of the present invention provides a paper shelf placement position on the base 1 for placing paper shelves, and the membrane electrode-paper shelf stacking position is used for the stacking layer of paper shelves and membrane electrodes. In the detection, the problem of frame collapse of the membrane electrode during the detection can be prevented, and the problem of battery performance degradation caused by the obstruction of ion transmission in the battery due to the collapse of the membrane electrode is avoided. Therefore, the membrane electrode detection device for fuel cells helps to improve the advantages of fuel electric propulsion performance.

[0039] At the same time, the paper shelf can effectively avoid the problem of adhesive adhesion due to overflow of membrane electrodes, which may occupy part of the active area, reduce the effective reaction area, and lead to the problem of reduced output power of the battery. Therefore, the paper shelf can further improve the performance of fuel cell propulsion.

[0040] In addition, the detection parts can detect the quality of the membrane electrode during the membrane electrode stacking process. It effectively reduces the damage of the membrane electrode caused by external forces during the detection process. That is, the one-time loading of multiple membrane electrodes required for the fuel cell stack is completed at one time, which improves the assembly efficiency of the fuel cell. Therefore, the membrane electrode detection device for fuel cells has the advantages of simplifying the assembly process and shortening the membrane electrode testing time.

[0041] Therefore, the membrane electrode detection device for a fuel cell according to the embodiment of the present invention has the advantages of simplifying the detection process and improving the performance of the fuel cell stack.

[0042] Optionally, the Z-axis truss 13 includes a Z-axis seat and a Z-axis hydraulic rod, the Z-axis seat is movably arranged on the X-axis truss 12 along the length direction of the base 1, and the two ends of the Z-axis hydraulic rod in the length direction are respectively connected to the gripper and the Z-axis seat. Similarly, the X-axis truss 12 and the Z-axis truss 13 are also driven by the hydraulic rod.

[0043] The paper shelf placement position, electrode placement position and membrane electrode-paper shelf stacking position are all arranged on the upper surface of the base 11, so that the gripping member can grasp the paper shelf and membrane electrode by moving the gripping member up and down and along the length of the base 11.

[0044] The gripping member includes a suction cup 2 and a suction pump. The suction cup 2 is provided with an airtight test hole 23 connected to the disc cavity of the suction cup 2. The suction pump is connected to the disc cavity of the suction cup 2 through the airtight test hole 23 to achieve the movement and placement of the membrane electrode and the paper shelf by exhausting and inhaling air.

[0045] The fuel cell membrane electrode detection device of the embodiment of the present invention divides the gripping member into a suction cup 2 and a suction pump, and relies on the suction and blowing cooperation between the suction cup 2 and the suction pump to achieve the placement of the paper and the membrane electrode. Therefore, the fuel cell membrane electrode detection device has the advantages of simple structure and high reliability.

[0046] like Figure 5 As shown, the suction cup 2 includes a suction cup body 21 and a sealing strip 22 . The suction cup body 21 is concave to form a cup cavity, and the sealing strip 22 is arranged around the suction cup body 21 in an area close to the cup cavity.

[0047] The fuel cell membrane electrode detection device of the embodiment of the present invention divides the suction cup 2 into a suction cup body 21 and a sealing strip 22, and the sealing strip 22 is arranged around the suction cup body 21 near the disc cavity. Therefore, the sealing strip 22 can improve the sealing performance of the suction cup body 21.

[0048] Optionally, the sealing strip 22 is a fluororubber strip.

[0049] like Figure 5 As shown, the detection member includes an airtightness detection element 31, which is arranged in the disc cavity of the suction cup 2 to detect the airtightness of the membrane electrode.

[0050] The fuel cell membrane electrode detection device of the embodiment of the present invention can detect the air tightness of the membrane electrode through the air tightness detection element 31, that is, the air tightness of the membrane electrode can also be detected during the process of moving the membrane electrode and placing the paper. It avoids the damage to the membrane electrode caused by repeated manual operations during loading and unloading, and can effectively prevent the membrane electrode from being damaged by external forces during the detection process, and improves the efficiency of fuel cell assembly, saves costs and shortens the membrane electrode test time.

[0051] Optionally, the shelf paper is a PET film material.

[0052] The inspection member includes a visual inspection element 32, which is used to inspect the appearance of the membrane electrode. The appearance of the membrane electrode can be inspected. When the visual inspection element 32 detects that the captured membrane electrode is unqualified, the membrane electrode is rejected. It is not necessary to set up a separate appearance inspection process line, and the appearance inspection of the membrane electrode can be achieved in conjunction with the grabbing process. This improves the comprehensiveness of the membrane electrode inspection.

[0053] The detection member also includes a thickness detection element 33, which is arranged on the suction cup 2 to detect the thickness of the membrane electrode. Thus, the thickness of the membrane electrode can be detected, and it is not necessary to set up a separate thickness detection process line, that is, the thickness detection of the membrane electrode can be realized in conjunction with the grabbing process. This improves the comprehensiveness of the membrane electrode detection and shortens the membrane electrode test time.

[0054] The visual detection element 32 includes a first imaging element and a second imaging element. The first imaging element is arranged on the base 1 , and the second imaging element is arranged on the gripper so as to detect the double-sided appearance of the membrane electrode.

[0055] The membrane electrode detection device for fuel cells of the embodiment of the present invention is configured to detect the double-sided appearance of the membrane electrode by setting the first imaging element on the base 1 and the second imaging element on the gripping member. The membrane electrode appearance detection method is simultaneously implemented during the lifting process, and there is no need for complex suction claws to flip the membrane electrode 180°. The appearance detection can be implemented without flipping the membrane electrode, which minimizes the possibility of damage to the membrane electrode during the detection process. The appearance detection of the membrane electrode can be implemented during the process of transferring the membrane electrode to the membrane electrode-paper stacking position, and the assembly efficiency of the fuel cell is further improved and the cost is saved.

[0056] Furthermore, the detection component may include an airtightness detection element 31, a visual detection element 32, and a thickness detection element 33. That is, while adding a paper-laying operation to the membrane electrode, the integration of airtightness test, thickness detection, and appearance detection processes is realized, unqualified membrane electrode products are quickly eliminated, and the detection speed is faster. After the appearance detection, thickness detection and airtightness test are performed at the same time to avoid damage to the membrane electrode caused by multiple manual operations of loading and unloading. It can effectively prevent the membrane electrode from being damaged by external forces or falling off due to loose adhesion during the detection process, further improving the efficiency of fuel cell assembly and saving costs. At the same time, the first camera element and the second camera element set up in the upper and lower positions are used to realize the appearance detection of the membrane electrode at the same time during the lifting process, without the need to set up a complex gripping process of 180° flipping, thereby improving the detection efficiency and simplifying the configuration of the detection line equipment.

[0057] The membrane electrode detection device for fuel cells of the embodiment of the present invention further includes an identity information detection element. The airtightness detection element 31 is disposed on the suction cup 2 so as to identify and track the identity information of the electrode piece.

[0058] The fuel cell membrane electrode detection device of the embodiment of the present invention can detect the identity information of the membrane electrode through the provided identity information detection element, so as to track the membrane electrode later.

[0059] Furthermore, a QR code or a barcode may be provided on the membrane electrode to monitor and track the information of the membrane electrode in cooperation with an identity information detection element.

[0060] The base 1 is also provided with a waste position, and the membrane electrode-paper stacking position and the waste position are arranged on both sides of the electrode placement position.

[0061] The fuel cell membrane electrode detection device of the embodiment of the present invention arranges the waste position, and sets the membrane electrode-paper stacking position and the waste position on both sides of the electrode placement position, so as to facilitate the placement of the rejected membrane electrode.

[0062] The paper shelf placement position, electrode placement position and membrane electrode-paper shelf stacking position are all provided with a limiting device 4 extending along the Z axis to prevent the paper shelf and membrane electrode from being skewed during the moving, placing and stacking process.

[0063] The fuel cell membrane electrode detection device of the embodiment of the present invention avoids punching holes on the paper shelf by setting the limit device 4 on the paper shelf placement position, the electrode placement position and the membrane electrode-paper shelf stacking position, while ensuring a good positioning function. When the membrane electrode and the paper shelf are stacked, multiple membrane electrodes can be stacked, saving space, and the one-time loading of multiple membrane electrodes required for the fuel cell stack can be completed at one time, greatly shortening the membrane electrode test time.

[0064] Furthermore, the limiting device 4 is provided with a plurality of vertical rods, which are correspondingly arranged at the corners of the electrode, and the vertical rods are provided with guide grooves. Thus, the width and length directions of the membrane electrode can be limited by the vertical rods arranged at the corners. Therefore, the membrane electrode detection device for fuel cells of the embodiment of the present invention has the advantages of simple structure and good limiting effect.

[0065] The battery stack assembly method according to the embodiment of the present invention uses the above-mentioned fuel cell membrane electrode detection device to pre-treat the membrane electrode, and the assembly method includes the following steps:

[0066] The membrane electrode and the paper rack are alternately grasped by a gripper for stacking. During the stacking process, the quality of the membrane electrode (air tightness detection, thickness detection, appearance and identity information tracking) is simultaneously detected by the detection component to complete the pretreatment of qualified membrane electrodes; the end plate is placed on the assembly station, and the bipolar plate and the membrane electrode in the tested membrane electrode pretreatment plate are stacked and pressed in sequence. After the stacking is completed, the fuel cell bare stack is assembled by threading and fixing with screws.

[0067] Therefore, the battery stack assembly method of the embodiment of the present invention has the advantages of simplifying the detection process and improving the performance of the fuel cell stack.

[0068] Specifically, the embodiment of the present invention includes a suction cup 2 following the pneumatic X-axis truss 12 to run to four groups of silos (paper placement position, electrode placement position, membrane electrode-paper stacking position and waste position), moving the gripper to above the electrode placement position, and performing front contour detection, membrane electrode surface defect detection and QR code recognition on the membrane electrode through the visual detection element 32 on the suction cup 2. If there is no defect on the front and the QR code recognition is correct, the identity information recognition is correct. The gripper follows the pneumatic Z-axis truss 13 to absorb the membrane electrode and pauses at a fixed height position, waiting for the camera at the bottom of the seat 11 to perform machine vision inspection on the back of the membrane electrode. The pneumatic module Z-axis truss 13 and the X-axis truss 12 run to the membrane electrode-paper stacking position. After the suction cup 2 moves down to a fixed pressure value, airtightness detection and thickness detection can be performed. If the airtightness and thickness detection are qualified, the suction cup 2 follows the Z-axis truss 13 and the X-axis truss 12 to the paper placement position to absorb the paper. The suction cup 2 absorbs the paper and runs to the membrane electrode-paper stacking position in the same way. According to the outer limit of the membrane electrode-paper stacking position, the stacking accuracy of the paper and the membrane electrode is accurate. At this point, the detection of a piece of membrane electrode is completed, and the stacking of a piece of paper is realized. The reciprocating cycle can realize the detection of multiple membrane electrodes and the stacking of membrane electrodes-paper. If the code scanning, airtightness, and thickness detection are unqualified, the suction cup 2 module absorbs this membrane electrode and transports the membrane electrode to the waste position (unqualified membrane electrode silo).

[0069] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0070] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0071] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0073] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0074] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A membrane electrode detection device for a fuel cell, characterized in that: include: A base, the base comprising a base body, an X-axis truss and a Z-axis truss, the Z-axis truss being movably arranged on the X-axis truss along the length direction of the base, the base body having a paper placement position, an electrode placement position and a membrane electrode-paper placement position which are arranged at intervals along the length direction of the base, the paper placement position being used to place paper, the electrode placement position being used to place membrane electrodes, and the membrane electrode-paper placement position being used to place a stacked layer of paper and membrane electrodes; A gripping member, wherein the gripping member is movably arranged on the Z-axis truss along the up-down direction of the base so as to realize the placement and transfer of the membrane electrode and the paper rack through the lateral movement of the Z-axis truss and the up-down movement of the gripping member; A detection member is arranged on the gripping member and is used to detect the qualification of the membrane electrode.

2. The membrane electrode detection device for fuel cell according to claim 1, characterized in that: The gripping member includes a suction cup and a suction pump. The suction cup is provided with an airtight test hole connected to the cup cavity of the suction cup. The suction pump is connected to the cup cavity of the suction cup through the airtight test hole to achieve the movement and placement of the membrane electrode and the paper shelf by exhausting and inhaling air.

3. The membrane electrode detection device for fuel cell according to claim 2, characterized in that: The suction cup comprises a suction cup body and a sealing strip. The suction cup body is concave to form the cup cavity. The sealing strip is arranged around the area of ​​the suction cup body close to the cup cavity.

4. The membrane electrode detection device for fuel cell according to claim 2, characterized in that: The detection member comprises an airtightness detection element, and the airtightness detection element is arranged in the disc cavity of the suction cup to detect the airtightness of the membrane electrode; And / or, the detection member includes a visual detection element, and the visual detection element is used to detect the conformity of the appearance of the membrane electrode; And / or, the detection member further includes a thickness detection element, and the thickness detection element is arranged on the suction cup to detect the thickness of the membrane electrode.

5. The membrane electrode detection device for fuel cell according to claim 4, characterized in that: The visual detection element includes a first imaging element and a second imaging element. The first imaging element is disposed on the base, and the second imaging element is disposed on the gripping member so as to detect the double-sided appearance of the membrane electrode.

6. The membrane electrode detection device for fuel cell according to claim 4, characterized in that: It also includes an identity information detection element, which is arranged on the suction cup to identify and track the identity information of the pole piece.

7. The membrane electrode detection device for fuel cell according to claim 1, characterized in that: The base is also provided with a waste position, and the membrane electrode-paper stacking position and the waste position are arranged on both sides of the electrode placement position.

8. The membrane electrode detection device for fuel cell according to claim 7, characterized in that: The paper shelf placement position, the electrode placement position and the membrane electrode-paper shelf stacking position are all provided with limiting devices extending along the Z axis to prevent the paper shelf and the membrane electrode from being skewed during the moving, placing and stacking process.

9. The membrane electrode detection device for fuel cell according to claim 8, characterized in that: The limiting device comprises a plurality of vertical poles, the plurality of vertical poles are correspondingly arranged at the corners of the electrode, and the vertical poles are provided with guide grooves.

10. A method for assembling a battery stack, characterized in that: The membrane electrode is pre-processed by using the membrane electrode detection device for fuel cells as described in claims 1 to 9, and the assembly method comprises the following steps: The membrane electrode and the paper holder are alternately grasped by a gripping member for stacking. During the stacking process, the quality of the membrane electrode is simultaneously inspected by a detection member to complete the pretreatment of qualified membrane electrodes. The end plate is placed on the assembly station, and the bipolar plates and the membrane electrodes in the tested membrane electrode pretreatment plate are sequentially stacked and pressure-pressed. After the stacking is completed, the fuel cell bare stack is assembled by threading and fixing with screws.

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