Hydraulically controlled fuel cell clamp and fuel cell device

Abstract

This invention provides a hydraulically controlled fuel cell clamp and fuel cell device. The hydraulically controlled fuel cell clamp includes: a base; a hydraulic pump disposed outside the base; a hydraulic cylinder disposed on the base, the hydraulic cylinder including a cylinder body communicating with the hydraulic pump and a piston rod movably disposed within the cylinder body; a receiving frame connected to the cylinder body, the receiving frame including a first limiting member, the first limiting member and the cylinder body having a gap to form a receiving space; a reversing valve disposed on the base, the reversing valve communicating between the hydraulic pump and the hydraulic cylinder; and a moving plate connected to the piston rod and located within the receiving space, the moving plate moving toward or away from the first limiting member and forming a clamping space for clamping the fuel cell between the moving plate and the first limiting member. The technical solution of this application effectively solves the problem of low detection efficiency of membrane electrode assemblies in related technologies.

Description

Technical Field

[0001] This invention relates to the field of energy devices, and more specifically, to a hydraulically controlled fuel cell clamp and fuel cell device. Background Technology

[0002] A proton exchange membrane hydrogen fuel cell is an energy device that directly converts the chemical energy stored in fuel and oxidant into electrical energy. It has advantages such as high energy conversion efficiency, low environmental pollution, and long service life. It is suitable for various applications such as transportation, power plants, and portable power sources, and has broad market application prospects.

[0003] The membrane electrode assembly (MEA) is the core component of a proton exchange membrane fuel cell (PEMFC), and its performance directly affects the overall performance of the PEMFC. Fuel cell fixtures provide test data for evaluating the performance of the MEA.

[0004] The fuel cell clamps in related technologies apply relatively small axial forces to the proton exchange membrane fuel cell, resulting in slow assembly and disassembly speeds and low testing efficiency of the membrane electrode assembly. Summary of the Invention

[0005] The main objective of this invention is to provide a hydraulically controlled fuel cell clamp and fuel cell device to solve the problem of low detection efficiency of membrane electrode assemblies in related technologies.

[0006] To achieve the above objectives, according to one aspect of the present invention, a hydraulically controlled fuel cell clamp is provided, comprising: a base; a hydraulic pump disposed outside the base; a hydraulic cylinder disposed on the base, the hydraulic cylinder including a cylinder body communicating with the hydraulic pump and a piston rod movably disposed within the cylinder body; a receiving frame connected to the cylinder body, the receiving frame including a first limiting member, the first limiting member and the cylinder body having a gap to form a receiving space; a reversing valve disposed on the base, the reversing valve communicating between the hydraulic pump and the hydraulic cylinder; and a movable plate connected to the piston rod and located within the receiving space, the movable plate moving toward or away from the first limiting member and forming a clamping space for clamping the fuel cell between the movable plate and the first limiting member.

[0007] Furthermore, the hydraulically controlled fuel cell clamp also includes a flow control valve that connects the hydraulic pump and the directional valve.

[0008] Furthermore, the receiving frame also includes a second limiting member connected to the cylinder body. The second limiting member is located within the receiving space and is spaced apart from the first limiting member. The moving plate moves between the first limiting member and the second limiting member.

[0009] Furthermore, the receiving frame also includes a baffle connected between the first limiting member and the second limiting member. The baffle is perpendicular to the movable plate, and the movable plate, part of the baffle, and the first limiting member form a clamping space.

[0010] Furthermore, the hydraulically controlled fuel cell clamp also includes a fixed plate fixed to the side of the first limiting member facing the second limiting member, and a movable plate, a partial baffle, and the fixed plate forming a clamping space.

[0011] Furthermore, the first limiting member is provided with a first positioning hole, the fixed plate is provided with a second positioning hole corresponding to the first positioning hole, the moving plate is provided with a third positioning hole corresponding to the second positioning hole, and the hydraulically controlled fuel cell clamp also includes a positioning post that can be plugged into the first positioning hole, the second positioning hole and the third positioning hole.

[0012] Furthermore, the hydraulically controlled fuel cell clamp also includes a first insulating member and a second insulating member. The first insulating member is disposed on the surface of the fixed plate facing the second limiting member, and the second insulating member is disposed on the surface of the movable plate facing the first limiting member; or, the movable plate is the first insulating plate and the fixed plate is the second insulating plate.

[0013] Furthermore, the second limiting member is provided with a clearance hole to avoid the piston rod, and the moving plate is connected to the end of the piston rod facing the moving plate by fasteners.

[0014] Furthermore, the base is an outer shell covering the outside of the cylinder body, with one end of the piston rod extending from the cylinder body located at the opening of the outer shell, and the reversing valve is fixedly installed on the outside of the base.

[0015] According to another aspect of the present invention, a fuel cell device is provided, including a fuel cell clamp and a fuel cell cooperating with the fuel cell clamp. The fuel cell clamp is the hydraulically controlled fuel cell clamp described above. The fuel cell includes a first current collector, a first electrode plate, a membrane electrode assembly, a second electrode plate, and a second current collector arranged sequentially. The first current collector faces a movable plate and is fixed to the movable plate. The first electrode plate is fixed to the first current collector. The second current collector faces a first limiting member and is fixed to the first limiting member. The second electrode plate is fixed to the second current collector. And / or, the membrane electrode assembly includes a membrane electrode and a frame surrounding the edge of the membrane electrode. The frame is an insulating member. A first sealing member is provided on the surface of the frame facing the first electrode plate, and a second sealing member is provided on the surface of the frame facing the second electrode plate.

[0016] According to the technical solution of this invention, a hydraulically controlled fuel cell clamp includes: a base, a hydraulic pump, a hydraulic cylinder, a receiving frame, a reversing valve, and a moving plate. The hydraulic pump is located outside the base. The hydraulic cylinder is located on the base. The hydraulic cylinder includes a cylinder body communicating with the hydraulic pump and a piston rod movably disposed within the cylinder body. The receiving frame is connected to the cylinder body. The receiving frame includes a first limiting member. A gap exists between the first limiting member and the cylinder body to form a receiving space. The reversing valve is located on the base and is connected between the hydraulic pump and the hydraulic cylinder. The moving plate is connected to the piston rod and located within the receiving space. The moving plate moves toward or away from the first limiting member and forms a clamping space for clamping the fuel cell between itself and the first limiting member. The hydraulic pump pumps hydraulic oil to the right chamber of the cylinder body through the reversing valve. The hydraulic oil pushes the piston rod to the left, and simultaneously, the piston rod drives the moving plate to move away from the first limiting member. At this time, the clamping space gradually increases to accommodate the fuel cell, thus allowing the fuel cell to be placed within the clamping space. The hydraulic pump, via a reversing valve, pumps hydraulic oil to the left chamber of the cylinder. This hydraulic oil pushes the piston rod to the right, simultaneously causing the moving plate to move towards the first limiting member. At this point, the clamping space gradually decreases, effectively clamping the fuel cell. Thus, by using hydraulic oil to drive the piston rod and generate a large axial force, the fuel cell (such as a proton exchange membrane hydrogen fuel cell) can be compressed and shaped more quickly, improving assembly and disassembly speed and enhancing the testing efficiency of the membrane electrode assembly. Therefore, the technical solution of this application can solve the problem of low testing efficiency of membrane electrode assemblies in related technologies. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0018] Figure 1 A schematic diagram of the hydraulic circuit of an embodiment of a hydraulically controlled fuel cell clamp according to the present invention is shown;

[0019] Figure 2 It shows Figure 1 A schematic diagram of the exploded structure of a hydraulically controlled fuel cell clamp holding a fuel cell.

[0020] Figure 3 It shows Figure 2 A three-dimensional structural diagram of a hydraulically controlled fuel cell clamp holding a fuel cell;

[0021] Figure 4 It shows Figure 2 A front view schematic diagram of a hydraulically controlled fuel cell clamp holding a fuel cell;

[0022] Figure 5 It shows Figure 2 A top view of a hydraulically controlled fuel cell clamp holding a fuel cell.

[0023] The above figures include the following reference numerals:

[0024] 10. Hydraulic pump; 11. Oil tank; 12. Filter; 20. Hydraulic cylinder; 21. Cylinder body; 22. Piston rod; 30. Directional control valve; 41. Second limiting component; 42. First limiting component; 43. Moving plate; 44. Baffle; 45. Fixed plate; 50. Flow control valve; 60. Fuel cell; 61. First collector plate; 62. First electrode plate; 63. Membrane electrode assembly; 631. Membrane electrode; 632. Frame; 64. Second electrode plate; 65. Second collector plate; 70. Base. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0027] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0028] like Figures 1 to 3 As shown, the hydraulically controlled fuel cell clamp of this embodiment includes: a base 70, a hydraulic pump 10, a hydraulic cylinder 20, a receiving frame, a reversing valve 30, and a moving plate 43. The hydraulic pump 10 is disposed outside the base 70. The hydraulic cylinder 20 is disposed on the base 70. The hydraulic cylinder 20 includes a cylinder body 21 communicating with the hydraulic pump 10 and a piston rod 22 movably disposed within the cylinder body 21. The receiving frame is connected to the cylinder body 21. The receiving frame includes a first limiting member 42. A gap exists between the first limiting member 42 and the cylinder body 21 to form a receiving space. The reversing valve 30 is disposed on the base 70 and communicates between the hydraulic pump 10 and the hydraulic cylinder 20. The moving plate 43 is connected to the piston rod 22 and is located within the receiving space. The moving plate 43 moves toward or away from the first limiting member 42 and forms a clamping space for clamping the fuel cell 60 between itself and the first limiting member 42.

[0029] Using the technical solution of this embodiment, the hydraulic cylinder 20 includes a cylinder body 21 communicating with the hydraulic pump 10 and a piston rod 22 movably disposed within the cylinder body 21. A receiving frame is connected to the cylinder body 21. The receiving frame includes a first limiting member 42. A gap exists between the first limiting member 42 and the cylinder body 21 to form a receiving space. A reversing valve 30 is disposed on the base 70 and is connected between the hydraulic pump 10 and the hydraulic cylinder 20. A moving plate 43 is connected to the piston rod 22 and is located within the receiving space. The moving plate 43 moves toward or away from the first limiting member 42 and forms a clamping space for clamping the fuel cell 60 between itself and the first limiting member 42. Hydraulic pump 10 pumps hydraulic oil to the right chamber of cylinder 21 via reversing valve 30. The hydraulic oil pushes piston rod 22 to the left, and simultaneously, piston rod 22 drives moving plate 43 to move away from the first limiting member 42. At this time, the clamping space gradually increases to accommodate fuel cell 60, thus allowing fuel cell 60 to be placed within the clamping space. Hydraulic pump 10 also pumps hydraulic oil to the left chamber of cylinder 21 via reversing valve 30. The hydraulic oil pushes piston rod 22 to the right, and simultaneously, piston rod 22 drives moving plate 43 to move towards the first limiting member 42. At this time, the clamping space gradually decreases to clamp fuel cell 60. Because hydraulic oil drives piston rod 22 and generates a large axial force, fuel cell 60 (such as proton exchange membrane hydrogen fuel cell) can be compressed and shaped more quickly, improving assembly and disassembly speed and thus improving the detection efficiency of membrane electrode assembly. Therefore, the technical solution of this embodiment can solve the problem of low detection efficiency of membrane electrode assembly in related technologies.

[0030] In this embodiment, the movable plate 43 on the piston rod 22 can clamp the fuel cell by moving laterally. In this case, the hydraulically controlled fuel cell clamp is a horizontal hydraulically controlled fuel cell clamp. The first limiting member 42 is the left limiting member, the second limiting member 41 (see below) is the right limiting member, and the two baffles 44 (see below) are the upper baffle and the lower baffle, respectively. Of course, in an embodiment not shown in the figure, the movable plate on the piston rod can move vertically to clamp the fuel cell. In this case, the hydraulically controlled fuel cell clamp is a vertical hydraulically controlled fuel cell clamp. In this case, the first limiting member (see below) is the upper limiting member, the second limiting member (see below) is the lower limiting member, and the two baffles (see below) are the left baffle and the right baffle, respectively. The vertical, hydraulically controlled fuel cell fixture can eliminate the influence of gravity on water distribution at different positions of the membrane electrode assembly (MEA), allowing for more accurate prediction of the MEA's intrinsic performance under specific operating conditions. It also enhances the water retention capacity of the upper layer (anode side) of the MEA, reducing the workload of the humidifier and extending its lifespan. Furthermore, it enhances the drainage capacity of the lower layer (cathode side) of the MEA, reducing the risk of flooding under high electrical density and improving the MEA's lifespan and performance. The aforementioned reversing valve 30 is preferably a three-position four-way manual reversing valve.

[0031] like Figures 1 to 3 As shown, the hydraulically controlled fuel cell fixture also includes a flow control valve 50 connected between the hydraulic pump 10 and the reversing valve 30. During testing, the flow control valve 50 can adjust the pressure or speed of the hydraulic oil pumped by the hydraulic pump 10 into the cylinder 21, making the axial force applied to the fuel cell 60 by the moving plate 43 on the piston rod 22 adjustable. This results in high pressurization accuracy, extended maintenance cycles, long pressure holding time, and precise online adjustment of the membrane electrode assembly's compression ratio. Furthermore, different flow fields can be designed on the fuel cell according to experimental requirements, providing accurate test data for the performance testing of the membrane electrode assembly. Thus, the hydraulically controlled fuel cell fixture of this embodiment is modular, offering advantages such as low cost, high precision, high efficiency, excellent durability, and good uniformity. The flow control valve 50 is preferably a throttle valve. This allows the throttle valve to adjust the speed of the hydraulic oil pumped by the hydraulic pump 10 into the cylinder 21, resulting in smooth piston rod 22 transmission, high drive rigidity, high control accuracy, and fast response speed.

[0032] like Figure 1As shown, the hydraulically controlled fuel cell fixture in this embodiment also includes an oil tank 11 and a filter 12. Both the oil tank 11 and the filter 12 are located outside the base 70. The hydraulic pump 10 is connected to the oil tank 11. The first port of the reversing valve 30 is connected to the left chamber of the cylinder 21, the second port of the reversing valve 30 is connected to the right chamber of the cylinder 21, the third port of the reversing valve 30 is connected to the throttle valve, and the fourth port of the reversing valve 30 is connected to the oil tank 11. The filter 12 connects the hydraulic pump 10 and the throttle valve. In this embodiment, all connections in the fuel cell device are made via high-pressure oil pipes.

[0033] like Figures 1 to 3 As shown, the receiving frame also includes a second limiting member 41 connected to the cylinder body 21. The second limiting member 41 is located within the receiving space and is spaced apart from the first limiting member 42. The moving plate 43 moves between the first limiting member 42 and the second limiting member 41. When the moving plate 43 moves away from the first limiting member 42 and comes into contact with the second limiting member 41, the second limiting member 41 stops the moving plate 43, limiting its range of movement and creating the maximum clamping space. Specifically, the first limiting member 42 is a first limiting plate, and the second limiting member 41 is a second limiting plate.

[0034] like Figures 1 to 3 As shown, the receiving frame also includes a baffle 44 connected between the first limiting member 42 and the second limiting member 41. The baffle 44 is perpendicular to the moving plate 43, and the moving plate 43, part of the baffle 44, and the first limiting member 42 form a clamping space. The baffle 44 can block the fuel cell 60 located in the clamping space and prevent the fuel cell 60 from falling out of the clamping space.

[0035] In this embodiment, there are two baffles 44 arranged in parallel. In this way, the two baffles 44 block the fuel cell 60 from both sides. During the compression process, the two baffles 44 guide the fuel cell 60 so that the fuel cell 60 moves on the two opposing surfaces of the two baffles 44, which can improve the pressurization accuracy of the moving plate 43 on the piston rod 22 to the fuel cell 60.

[0036] like Figures 1 to 5 As shown, to facilitate the fixing of the fuel cell 60, the hydraulically controlled fuel cell clamp also includes a fixing plate 45 fixed to the side of the first limiting member 42 facing the second limiting member 41. The movable plate 43, the partial baffle 44, and the fixing plate 45 form a clamping space. This facilitates fixing the fuel cell 60 to the fixing plate 45.

[0037] like Figures 1 to 5As shown, the first limiting member 42 is provided with a first positioning hole, the fixing plate 45 is provided with a second positioning hole corresponding to the first positioning hole, and the moving plate 43 is provided with a third positioning hole corresponding to the second positioning hole. The hydraulically controlled fuel cell clamp also includes a positioning post that can be plugged into the first positioning hole, the second positioning hole, and the third positioning hole. In this way, during the process of fixing the fuel cell 60 in the clamping space, the positioning post is fixed in the first positioning hole to fit the first limiting member 42 onto the positioning post. The positioning post passes through the second positioning hole to fix the fixing plate 45 onto the first limiting member 42. Then, the fuel cell 60 is fitted onto the positioning post. Then, the positioning post, which contains the first limiting member 42, the fixing plate 45, and the fuel cell 60, is inserted into the third positioning hole. The moving plate 43 moves toward the first limiting member 42. The cooperation between the positioning post and the first, second, and third positioning holes makes the installation convenient and helps to improve the speed of assembly and disassembly.

[0038] like Figure 2 and Figure 3 As shown, to achieve insulation, the hydraulically controlled fuel cell clamp also includes a first insulating member and a second insulating member. The first insulating member is disposed on the surface of the fixed plate 45 facing the second limiting member 41, and the second insulating member is disposed on the surface of the movable plate 43 facing the first limiting member 42. Thus, the first insulating member can insulate the fixed plate 45 and the fuel cell 60, and the second insulating member can insulate the movable plate 43 and the fuel cell 60. In this embodiment, both the first and second insulating members are preferably insulating pads. Of course, in embodiments not shown in the figures, the first and second insulating members include, but are not limited to, anodized layers and insulating coatings. Alternatively, the movable plate can be the first insulating plate, and the fixed plate can be the second insulating plate. Specifically, both the first and second insulating plates are made of anodized aluminum, ceramic, PEEK, PI, epoxy resin, fiberglass, or carbon fiber.

[0039] like Figure 2 As shown, the second limiting member 41 is provided with a clearance hole to avoid the piston rod 22, and the moving plate 43 is connected to the end of the piston rod 22 facing the moving plate 43 by a fastener. In this way, the moving plate 43 can be fixed on the end of the piston rod 22 facing the moving plate 43. The fastener is preferably a threaded post.

[0040] like Figures 1 to 5 As shown, in order to accommodate the high-pressure oil pipes between the cylinder 21, hydraulic pump 10, and directional valve 30, the base is a shell covering the outside of the cylinder 21. One end of the piston rod 22 extending from the cylinder 21 is located at the opening of the shell, and the directional valve 30 is fixedly installed on the outside of the base. In this way, the aforementioned pipelines can be inserted into the gap between the cylinder 21 and the inner wall of the shell, avoiding the pipelines being placed haphazardly outside the shell.

[0041] Specifically, such as Figure 2and Figure 3 As shown, heating rod insertion holes are provided on the upper side of both the movable plate 43 and the fixed plate 45, so that heating rods can be inserted to work with thermocouples for temperature control.

[0042] Furthermore, the receiving frame, the movable plate 43, and the fixed plate 45 are all made of high-strength alloy. The first limiting member 42 and the second limiting member 41 are respectively fixed to the two baffles 44 with bolts. The fixed plate 45 is fixed to the first limiting member 42 with bolts, the second limiting member 41 is fixed to the end of the cylinder body 21 with bolts, and the outer side of the cylinder body 21 is fixed to the outer shell with bolts.

[0043] This application also provides a fuel cell device, such as Figures 2 to 5 As shown, the fuel cell device of this embodiment includes a fuel cell clamp and a fuel cell 60 that cooperates with the fuel cell clamp. The fuel cell clamp is the hydraulically controlled fuel cell clamp described above. Since the hydraulically controlled fuel cell clamp described above can solve the problem of low detection efficiency of membrane electrode assemblies in related technologies, the fuel cell device with this fuel cell clamp can solve the same technical problem.

[0044] like Figures 2 to 5 As shown, the fuel cell 60 includes a first current collector 61, a first electrode plate 62, a membrane electrode assembly 63, a second electrode plate 64, and a second current collector 65 arranged sequentially. The first current collector 61 faces the moving plate 43 and is fixed to the moving plate 43, while the first electrode plate 62 is fixed to the first current collector 61. The second current collector 65 faces the first limiting member 42 and is fixed to the first limiting member 42, while the second electrode plate 64 is fixed to the second current collector 65. Thus, after the fuel cell clamp is blocked by the second limiting member 41 and the hydraulic pump is turned off, the first current collector 61 and the first electrode plate 62 can be removed sequentially, and the membrane electrode assembly 63 can then be taken out. Alternatively, the first current collector 61 and the movable plate 43 can be fixed with insulating adhesive first, and then the first current collector 61 and the first electrode plate 62 can be bonded with conductive adhesive. This eliminates the need to remove the first current collector 61 and the first electrode plate 62, thus omitting both the removal and insertion steps, which improves the disassembly and assembly speed. Similarly, the second current collector 65 and the first limiting member 42 can be fixed with insulating adhesive first, and then the second current collector 65 and the second electrode plate 64 can be bonded with conductive adhesive. This eliminates the need to remove the second current collector 65 and the second electrode plate 64, thus omitting both the removal and insertion steps. This reduces the disassembly and assembly time of the fuel cell 60 from over 20 minutes to less than 3 minutes, significantly improving the fuel cell testing efficiency.

[0045] The aforementioned fixing plate 45 is already fixed to the first limiting member 42. Fixing the second current collector 65 and the first limiting member 42 first with insulating adhesive means first fixing the second current collector 65 and the fixing plate 45 to the first limiting member 42 with insulating adhesive. Both the first current collector 61 and the second current collector 65 are preferably made of gold-plated copper. Both the first current collector 61 and the second current collector 65 have conductive connectors.

[0046] like Figures 2 to 5 As shown, the membrane electrode assembly 63 includes a membrane electrode 631 and a frame 632 surrounding the edge of the membrane electrode 631. The frame 632 is an insulating component. Thus, different frames 632 can be used depending on their thickness to control the compression ratio of the membrane electrode 631. The frame 632 is made of a thin film material with high insulation, heat resistance, and strength.

[0047] In this embodiment, to improve the sealing effect between the two sides of the frame 632 and the first electrode plate 62 and the second electrode plate 64 respectively, a first sealing element is provided on the surface of the frame 632 facing the first electrode plate 62, and a second sealing element is provided on the surface of the frame 632 facing the second electrode plate 64. Both the first and second sealing elements are preferably made of elastic sealing materials. This allows the compression ratio of the membrane electrode 631 to be controlled using the pressure of the hydraulic oil in the fuel cell clamp. To make the axial force applied to the fuel cell 60 by the moving plate 43 on the piston rod 22 more uniform, the surface of the moving plate 43 facing the first limiting member 42 is a first plane, and the surface of the fixed plate 45 facing the second limiting member 41 is a second plane.

[0048] Specifically, both the first electrode plate 62 and the second electrode plate 64 are milled from graphite plates, ensuring a durable and coordinated structure for the fuel cell device. The first electrode plate 62 has a first side and a second side arranged opposite each other. A first gas inlet is provided on the first side of the first electrode plate 62, and a first gas outlet is provided on the second side of the first electrode plate 62. Similarly, the second electrode plate 64 has a second gas inlet and a second gas outlet. In this way, gas enters and exits from the side of the fuel cell 60, minimizing the sealing stroke of the first electrode plate 62 and the second electrode plate 64, and ensuring a reliable structure for the fuel cell device.

[0049] In this embodiment, thermocouple sockets are provided on the upper surfaces of both the first electrode plate 62 and the second electrode plate 64, allowing the insertion of thermocouples for temperature control. Milled gas flow channels are provided on the two opposing surfaces of the first electrode plate 62 and the second electrode plate 64, with the first gas inlet, second gas outlet, and second gas outlet serving as interfaces. Specifically, when opening the fuel cell clamp, first rotate the reversing valve 30 to the open position, turn on the hydraulic pump 10 to put the fuel cell clamp into working condition, then adjust the throttle valve to achieve a suitable hydraulic oil flow rate, allowing the hydraulic oil to enter the right chamber of the cylinder 21, causing the piston rod 22 to move to the left. Simultaneously, the hydraulic oil in the right chamber of the cylinder 21 is squeezed back into the oil tank 11 through the fourth interface of the reversing valve 30. The moving plate 43 is moved to the left by the threaded column. Once the fuel cell clamp is fully opened, the hydraulic pump 10 can be turned off. Then, the first collector plate 61 and the first electrode plate 62 are removed in sequence, allowing the membrane electrode assembly 63 to be taken out. After all the parts in this embodiment are installed in place, turn the reversing valve 30 to the closed position, start the hydraulic pump 10, adjust the throttle valve to make the hydraulic oil flow rate to a suitable value, so that the hydraulic oil enters the left chamber of the cylinder 21, causing the piston rod 22 to move to the right. At the same time, the hydraulic oil in the right chamber of the cylinder 21 is squeezed back to the oil tank 11 through the fourth port of the reversing valve. Simultaneously, the moving plate 43 is pushed to press the fuel cell 60 and the hydraulic pump 10, completing the overall installation of the fuel cell device.

[0050] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0051] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0052] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A hydraulically controlled fuel cell clamp, characterized in that, include: Base (70); A hydraulic pump (10) is disposed outside the base (70); A hydraulic cylinder (20) is disposed on the base (70). The hydraulic cylinder (20) includes a cylinder body (21) communicating with the hydraulic pump (10) and a piston rod (22) movably disposed in the cylinder body (21). A receiving frame is connected to the cylinder (21), the receiving frame includes a first limiting member (42), and there is a gap between the first limiting member (42) and the cylinder (21) to form a receiving space; A reversing valve (30) is disposed on the base (70), and the reversing valve (30) is connected between the hydraulic pump (10) and the hydraulic cylinder (20); The movable plate (43) is connected to the piston rod (22) and located within the receiving space. The movable plate (43) moves toward or away from the first limiting member (42) and forms a clamping space for clamping the fuel cell (60) between itself and the first limiting member (42). The receiving frame further includes a second limiting member (41) connected to the cylinder (21), the second limiting member (41) being located within the receiving space and having a gap between it and the first limiting member (42), and the receiving frame further includes a baffle (44) connected between the first limiting member (42) and the second limiting member (41). The hydraulically controlled fuel cell clamp also includes a fixing plate (45) fixed to the side of the first limiting member (42) facing the second limiting member (41). The moving plate (43), part of the baffle (44) and the fixing plate (45) form the clamping space for fixing the fuel cell (60) on the fixing plate (45). Heating rod insertion holes are provided on the upper side of both the movable plate (43) and the fixed plate (45) for inserting heating rods; The first limiting member (42) is provided with a first positioning hole, the fixed plate (45) is provided with a second positioning hole corresponding to the first positioning hole, the moving plate (43) is provided with a third positioning hole corresponding to the second positioning hole, and the hydraulically controlled fuel cell clamp also includes a positioning post that can be plugged into the first positioning hole, the second positioning hole and the third positioning hole.

2. The hydraulically controlled fuel cell clamp according to claim 1, characterized in that, The hydraulically controlled fuel cell clamp also includes a flow control valve (50) that connects the hydraulic pump (10) and the directional valve (30).

3. The hydraulically controlled fuel cell clamp according to claim 1, characterized in that, The movable plate (43) moves between the first limiting member (42) and the second limiting member (41).

4. The hydraulically controlled fuel cell clamp according to claim 3, characterized in that, The baffle (44) is perpendicular to the movable plate (43), and the movable plate (43), part of the baffle (44) and the first limiting member (42) form the clamping space.

5. The hydraulically controlled fuel cell clamp according to claim 1, characterized in that, The hydraulically controlled fuel cell clamp also includes a first insulating member and a second insulating member. The first insulating member is disposed on the surface of the fixed plate (45) facing the second limiting member (41), and the second insulating member is disposed on the surface of the movable plate (43) facing the first limiting member (42). The movable plate (43) is the first insulating plate, and the fixed plate (45) is the second insulating plate.

6. The hydraulically controlled fuel cell clamp according to claim 3, characterized in that, The second limiting member (41) is provided with a clearance hole to avoid the piston rod (22), and the moving plate (43) is connected to one end of the piston rod (22) facing the moving plate (43) by fasteners.

7. The hydraulically controlled fuel cell clamp according to claim 1, characterized in that, The base is a shell covering the outside of the cylinder (21), and one end of the cylinder (21) extending out of the piston rod (22) is located at the opening of the shell. The reversing valve (30) is fixedly installed on the outside of the base.

8. A fuel cell device, comprising a fuel cell clamp and a fuel cell (60) cooperating with the fuel cell clamp, characterized in that, The fuel cell clamp is the hydraulically controlled fuel cell clamp as described in any one of claims 1 to 7. The fuel cell (60) includes a first current collector (61), a first electrode plate (62), a membrane electrode assembly (63), a second electrode plate (64), and a second current collector (65) arranged sequentially. The first current collector (61) faces the movable plate (43) and is fixed to the movable plate (43). The first electrode plate (62) is fixed to the first current collector (61). The second current collector (65) faces the first limiting member (42) and is fixed to the first limiting member (42). The second electrode plate (64) is fixed to the second current collector (65). The membrane electrode assembly (63) includes a membrane electrode (631) and a frame (632) surrounding the edge of the membrane electrode (631). The frame (632) is an insulating member. A first sealing member is provided on the surface of the frame (632) facing the first electrode plate (62), and a second sealing member is provided on the surface of the frame (632) facing the second electrode plate (64).

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