Single cell voltage pickup subassembly and assembly for monitoring fuel cell and electrolysis cell stack voltage
By designing CVP sub-assemblies, including conductive PCBs, electrical contacts, and support frames, and utilizing sliding rods and mounting brackets, the problem of single-cell voltage transfer and measurement of CVP assemblies under different stack lengths and harsh environments was solved, thereby improving reliability and adaptability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-30
- Publication Date
- 2026-04-03
AI Technical Summary
Existing CVP components struggle to achieve reliable single-cell voltage transfer and measurement in environments with varying stack lengths, vehicle impacts, and vibrations, lacking a universal solution.
A CVP sub-assembly was designed, including a conductive PCB, electrical contacts, and a support frame, which enables reliable transmission and measurement of single-cell voltage through sliding rods and mounting brackets, adapting to different stack lengths and harsh environments.
It enables reliable transmission and measurement of single-cell voltage under mechanical shock and vibration loads, adapts to variable stack lengths, and improves the robustness and adaptability of the module.
Smart Images
Figure CN121784572A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a single-cell voltage pickup (CVP) sub-assembly, a CVP assembly including such a CVP sub-assembly, a fuel cell or electrolyzer system, and a CVP assembly assembly method. Background Technology
[0002] A CVP assembly typically provides a multi-channel interface between a fuel cell or electrolyzer stack and a single-cell voltage monitoring (CVM) system to measure the voltage of a single cell or cell stack. A typical CVP assembly consists of one or more CVP subassemblies and an installation system. CVP assemblies can be used to monitor the health status of fuel cells or electrolyzer stacks in a variety of applications, including but not limited to: stationary power generation units, laboratories, transportation, automobiles, trucks, rail transportation, marine, and aviation.
[0003] There are many design considerations and challenges for CVP (Contamination Verification) components because performance and contamination requirements can vary depending on the application. CVP components generally require specific, custom solutions, as there are typically no off-the-shelf solutions. The pickup contacts of CVP sub-components must maintain a good, robust electrical connection to the individual cell units and the PCB itself. Therefore, the mating characteristics within the individual cell units must be considered early in the CVP component design process. Design considerations for CVP components include, but are not limited to: stack length, individual cell pitch (distance between adjacent individual cells), altitude, contamination level, mechanical shock, vibration, voltage range, and measurement interval. Currently, there are no known off-the-shelf solutions for CVP components that can easily adapt to varying stack lengths, individual cell lengths, and operations, such as in environments subject to vehicle shock and vibration. Summary of the Invention
[0004] The object of this invention is to at least partially overcome the aforementioned disadvantages. In particular, the object of this invention is to provide a solution for reliably delivering single-cell voltage from a fuel cell or electrolyzer stack to a CVM system in real time, while allowing adjustability, scalability, and robustness to harsh environments, such as vehicle shocks and vibrations.
[0005] The aforementioned disadvantages are addressed by a CVP sub-assembly having the features of claim 1, a CVP assembly having the features of claim 8, a fuel cell or electrolyzer system having the features of claim 14, and a CVP assembly assembly method having the features of claim 15. Other features and details of the invention are derived from the dependent claims, the specification, and the drawings. The features and details described with respect to the CVP sub-assembly of the invention clearly also apply to the CVP assembly according to the invention, the fuel cell according to the invention, or the electrolyzer system according to the invention, and the CVP assembly assembly method according to the invention, and vice versa.
[0006] According to the present invention, a CVP sub-assembly for transmitting single-cell voltage to a single-cell voltage monitoring (CVM) system is described. The CVP sub-assembly includes a conductive printed circuit board (PCB) and at least one electrical contact (pickup contact) for electrically connecting at least one single-cell unit of a fuel cell or electrolyzer stack to the PCB. The CVP sub-assembly also includes a support frame for holding the PCB, wherein the support frame includes at least one through-hole for mounting to a sliding rod.
[0007] One advantage of the CVP sub-assembly according to the invention is that in applications with significant mechanical shock and vibration loads, the single-cell voltage can still be reliably transmitted to the CVM system. Furthermore, using the CVP sub-assembly according to the invention, single-cell voltage measurement can be achieved at different pickup contact locations along the stack length of the fuel cell or electrolyzer stack in cases of variable stack length.
[0008] The CVP sub-assembly may include a support frame and a CVP unit. The CVP unit may include a PCB and at least one electrical contact (pickup contact). The CVP unit may further include a mechanism for transmitting at least one single-cell voltage to the CVM system.
[0009] A single-cell unit block of a fuel cell or electrolyzer stack comprises one or more single-cell units, as described below.
[0010] One or more CVP units can acquire the single-cell voltage of a single-cell unit block of a fuel cell or electrolyzer stack. The single-cell unit block comprises several electrochemical single-cell units physically connected in series, thus contacting each other at their maximum surface area. The single-cell unit block can include fuel cells or electrolyzers based on proton exchange membrane (PEM) technology, solid oxide single-cell (SOC) technology, or other similar technologies.
[0011] At least one pickup contact can conduct electricity from a single-cell unit to the PCB. Furthermore, at least one pickup contact can be flexible. Additionally, at least one pickup contact can be based on spring wire. At least one pickup contact has a variety of possible geometries to allow CVP sub-assemblies to be mounted to the stack in different orientations. The pickup contact designs described herein are merely examples of possible electrical contacts. The shape of the pickup contact can be designed to suit any application.
[0012] A CVP cell may include several pickup contacts. The flexible pickup contacts are designed to compensate for changes in the length of a single cell block over time due to compression deformation of the seal and gas diffusion layer, as well as changes in stack length due to differences between individual cells and / or stack configuration based on power requirements.
[0013] In one embodiment, the CVP unit may include an electrical connector for delivering single-cell voltage to the CVM system. In another embodiment, the CVP unit can eliminate the electrical connector by integrating flexible circuitry (thus including a "rigid-flex printed circuit board"). Because no electrical connector is used in the rigid-flex printed circuit board, the robustness of the CVP unit in harsh environments can be significantly improved.
[0014] According to one aspect of the CVP subassembly, at least one pickup contact passes through and / or inserts into two adjacent holes on the PCB for optimal geometric alignment and, after soldering, to provide a robust electromechanical connection and maximum robustness against mechanical loads. In one embodiment, at least one pickup contact may pass through a first hole on the PCB from the front side to the back side, and then at least one pickup contact may pass through a second hole on the PCB from the back side to the front side. In another embodiment, for a single-ended opening hole on the PCB, at least one pickup contact can be directly placed in place without micro-motion compensation. This is ideal for automated machine assembly employing a pick-and-place method.
[0015] According to another aspect of the CVP sub-assembly, at least one pickup contact is soldered to the PCB using four solder points to achieve maximum robustness against mechanical loads. The first and second solder points may be areas where at least one pickup contact intersects with the front side of the PCB, and the third and fourth solder points may be areas where at least one pickup contact intersects with the back side of the PCB.
[0016] The CVP assembly includes at least one sliding rod. The sliding rod may extend through at least one hole in the support frame to retain the support frame. The support frame may include a plurality of through holes, each of which can be used to mount to the sliding rod. Alternatively, the CVP assembly may include multiple sliding rods depending on the application requirements.
[0017] The support frame includes at least one retaining mechanism for holding the support frame in place relative to at least one sliding rod. In one embodiment, the retaining mechanism may include a screw. Using the screw, the diameter of at least one through-hole can be reduced to secure the support frame to the sliding rod. In another embodiment, the retaining mechanism may include a spring-loaded rod that engages with elements of the sliding rod to secure the support frame to the sliding rod. In yet another embodiment, the retaining mechanism may include at least one spring clip that, upon release, clamps the sliding rod, thereby securing the support frame to the sliding rod.
[0018] According to another aspect of the CVP sub-assembly, the support frame can be manufactured by extrusion, additive manufacturing, or other production methods. Based on economies of scale, any such manufacturing method can be used to economically produce the support frame.
[0019] According to the present invention, a CVP assembly for mounting at least one CVP sub-assembly to a fuel cell or electrolyzer stack is described. The CVP assembly includes the CVP sub-assembly, at least one sliding rod for holding a support frame of the CVP sub-assembly, and at least one mounting bracket for holding the at least one sliding rod and securing the CVP assembly to the stack, wherein the at least one sliding rod is guided through at least one through-hole in the support frame of the CVP sub-assembly.
[0020] In fuel cell or electrolyzer applications, at least one sliding bar allows each CVP cell to be easily and optimally aligned with a single cell. The use of the sliding bar also allows for single-cell voltage measurement at different pick-up contact locations along the stack length of the fuel cell or electrolyzer stack in cases of variable stack length. Depending on the application requirements, this allows for, for example, measuring the voltage of each single cell near both ends of the stack, while allowing any number of single cells to be skipped near the middle of the stack.
[0021] Furthermore, CVP components can be easily adapted to operating conditions accompanied by mechanical shock and vibration loads. Additionally, CVP components can be easily and readily adapted to different stack lengths and configurations, for example, determined by power and / or space requirements.
[0022] The pickup contacts of the CVP unit can be easily aligned with the single-cell unit because the support frame can be simply and precisely moved along the length of the sliding rod and fixed in place. The single-cell voltage pickup capability can be easily expanded or reduced by adding or removing CVP sub-assemblies to meet specific application requirements.
[0023] In one embodiment, at least one sliding rod may be rigid. In another embodiment, at least one sliding rod may be a tensioned, non-rigid cable. Possible material options for at least one sliding rod include, but are not limited to, stainless steel, aluminum, carbon fiber, Kevlar®, or any other metallic and / or non-metallic material. The material may be surface-coated or coated as needed.
[0024] The stiffness of the sliding rod can be designed and strategically arranged to ensure that the contact force applied to the single pool unit by the pickup contact is as uniform as possible.
[0025] In one embodiment, at least one sliding bar can provide more robust support to the support frame by adding a textured surface, which is formed by methods such as knurling, threading, chemical etching, sandblasting, etc. In this case, the support frame may include the corresponding characteristics.
[0026] In another embodiment, at least one sliding rod may include a solid or hollow circular cross-section, a solid or hollow rectangular cross-section, a solid or hollow angular cross-section, a solid or hollow T-shaped cross-section, or any other geometry. The cross-section may be selected according to stiffness requirements.
[0027] According to another aspect of the CVP assembly, the CVP assembly includes a retaining member and / or retaining element for preventing translational movement of at least one sliding rod relative to at least one end of the stack. In one embodiment of the invention, at least one snap ring retaining member may be provided at at least one end of the sliding rod, such that the sliding rod is constrained to at least one mounting bracket.
[0028] In one embodiment, at least one mounting bracket may comprise materials including, but not limited to, aluminum, thermoplastics, thermosetting plastics, composite materials, and stainless steel. The mounting bracket is designed to further reduce the flexural deformation of at least one sliding rod.
[0029] In another embodiment, the aforementioned functions of the mounting bracket are directly integrated into the stack hardware, thus eliminating the need for a separate mounting bracket.
[0030] In one embodiment of the invention, the CVP assembly may include a mechanism for automatically redistributing multiple CVP sub-assemblies based on variations in the stack length. The automatic redistribution mechanism may include spring-like elements arranged between the support frames of the CVP sub-assemblies. The overall length can thus be adjusted at various points.
[0031] According to the present invention, a fuel cell or electrolyzer system is described. The fuel cell or electrolyzer system includes at least one fuel cell or electrolyzer stack and at least one CVP assembly according to the present invention.
[0032] A method for assembling a CVP assembly according to the following embodiments is described, wherein the CVP assembly is provided with at least one mounting bracket. The method includes the steps of: mounting a CVP unit to a support frame to form a CVP sub-assembly; securing a sliding rod to at least one mounting bracket using a snap-ring retainer; and guiding the sliding rod through a through-hole in the support frame of the CVP sub-assembly. After the CVP assembly is assembled, at least one mounting bracket is fastened to fuel cell or electrolyzer stack hardware.
[0033] In another CVP component embodiment, a CVP component assembly method is described, wherein the function of the mounting bracket is directly integrated into the stack hardware. The method includes the following steps: mounting a CVP unit to a support frame to form a CVP sub-assembly; guiding a sliding rod through a through-hole in the support frame of the CVP sub-assembly; and assembling the sliding rod into a mounting component of the fuel cell or electrolyzer stack hardware.
[0034] Other advantages, features and details of the present invention will become apparent from the following description, wherein at least one embodiment of the invention is described in detail with reference to the accompanying drawings set forth below. Attached Figure Description
[0035] Figure 1 A perspective view of a CVP component according to one possible embodiment of the present invention is shown. Figure 2 Show Figure 1 An exploded perspective view of the CVP components. Figure 3 A perspective view of the CVP cell is shown. Figure 4 A perspective view of another possible CVP unit is shown. Figure 5 An exploded perspective view of a CVP sub-component according to one embodiment of the present invention is shown. Figure 6 Show Figure 5 The rear view of the CVP sub-component. Figure 7 A side view of the pickup contact is shown. Figure 8 A side view showing another possible pickup point is shown. Figure 9 The rear perspective view of the PCB with pickup contacts is shown. Figure 10 Show Figure 9 Front perspective view of a PCB with pickup contacts. Figure 11 The rear perspective view of the PCB with a single-ended aperture and pickup contacts is shown. Figure 12 Showing a front view of the support frame, and Figure 13 Show Figure 12 Side view of the supporting frame. Detailed Implementation
[0036] Figure 1 A perspective view of a CVP assembly 100 according to one possible embodiment of the invention is shown. For the CVP assembly 100, at least one CVP sub-assembly 12 may be installed to a fuel cell or electrolyzer stack. (The last sentence appears to be incomplete and possibly refers to a different invention.) Figure 1 As seen in the image, the CVP assembly 100 may include multiple CVP sub-assemblies 12, two sliding rods 110, and two mounting brackets 120.
[0037] The support frame 30 is mounted to the sliding rod 110. For example... Figure 1 As shown, the sliding rod 110 is guided through the through hole 40 of the support frame 30 of the CVP subassembly 12.
[0038] Two mounting brackets 120 are used to mount the sliding rod 110 to the fuel cell or electrolyzer stack.
[0039] CVP assembly 100 and fuel cell or electrolyzer stack can be part of a fuel cell or electrolyzer system.
[0040] The CVP assembly 100 features adjustability, scalability, and improved robustness to harsh environments compared to existing technologies. The sliding bar 110 allows each CVP sub-assembly 12 to be easily and optimally aligned with one or more single-cell units of the fuel cell or electrolyzer stack. This allows for single-cell voltage measurements at different pickup contact locations along the stack length of the fuel cell or electrolyzer stack with variable stack lengths. Single-cell voltage pickup capability can be easily expanded or reduced by adding or removing CVP sub-assemblies 12 to meet specific application requirements. Furthermore, the CVP assembly 100 is easily adaptable to operating environments with significant mechanical shock and vibration loads.
[0041] CVP assembly 100 may include a mechanism for automatically redistributing CVP subassemblies 12 based on changes in stack length. The automatic redistribution mechanism may include spring-like elements that may be arranged between the CVP subassemblies 12, and preferably between the support frames 30 of the subassemblies 12.
[0042] In one embodiment of the invention, at least one slide bar 110 is a rigid component. In another embodiment of the invention, at least one slide bar 110 is a non-rigid component, such as a tensioned cable. Possible material options for the slide bar 110 include, but are not limited to, stainless steel, aluminum, carbon fiber, Kevlar®, or any other metallic and / or non-metallic material. The material may be surface-coated or coated as needed, for example, for electrical safety.
[0043] The stiffness of the sliding rod 110 and the stiffness of the pickup contact 50 are designed so that the contact force applied by the pickup contact 50 to the single pool unit is as uniform as possible and within the allowable range of contact pressure.
[0044] In harsh mechanical applications, the sliding rod 110 can be manufactured to provide more robust retention of the support frame 30 by adding a textured surface, which is formed by, for example, knurling, threading, chemical etching, or sandblasting. The through-hole 40 of the support frame 30 may include appropriate features as needed.
[0045] The sliding rod 110 can include any geometric shape, and can be solid or hollow, including but not limited to circular cross-section, rectangular cross-section, angular cross-section, or T-shaped cross-section. Different cross-sections of the sliding rod 110 can be selected according to stiffness requirements.
[0046] Figure 2 Show Figure 1 An exploded perspective view of CVP component 100. (If possible...) Figure 2As seen in the image, the CVP assembly 100 may include retaining members 112 for preventing translational movement of the sliding rod 110 relative to at least one of the mounting brackets 120. For each sliding rod 110, a snap ring retaining element 114 may be arranged on both sides of one of the mounting brackets 120, such as... Figure 2 As shown.
[0047] Mounting bracket 120 may comprise materials including, but not limited to, aluminum, thermoplastic, thermosetting, composite materials, or stainless steel. The one or more mounting brackets 120 are designed to further reduce the flexural deformation of the sliding rod 110.
[0048] In one embodiment of the invention, the functionality of the mounting bracket 120 can be directly integrated into the stack hardware, thus eliminating the need for one or more separate mounting brackets 120.
[0049] Figure 3 A perspective view of CVP unit 10 is shown. CVP unit 10 includes a printed circuit board (PCB) 20, pickup contacts 50, and electrical connectors 22. Pickup contacts 50 electrically connect stacked single-cell units to circuitry on the PCB 20, which in turn electrically connects to the electrical connectors 22. This allows voltage from a single cell or a group of single cells to be delivered to the CVM system.
[0050] Figure 4 In another embodiment shown, a rigid-flex circuit board is used, wherein the electrical connector 22 is no longer located in the rigid portion of the CVP unit 10 and has been repositioned to the end of the flexible portion of the circuit board. This significantly improves the robustness of the CVP unit 10 under harsh environmental and mechanical conditions.
[0051] Figure 5 An exploded perspective view of a CVP sub-component 12 according to one embodiment of the present invention is shown. The CVP sub-component 12 includes CVP units 10 (e.g., as shown in the image). Figure 3 and 4 (as shown) and support frame 30.
[0052] Figure 6 Show Figure 5 The rear view of CVP subcomponent 12. (See example...) Figure 6 As shown, the CVP sub-assembly 12 includes a CVP unit 10, a support frame 30, and two fastening screws 34.
[0053] Figure 7 and 8Side views of two possible pickup contacts 50 are shown, although many other geometries are feasible. Pickup contacts 50 can be designed to fit any application and allow the CVP sub-assembly 12 to be mounted to the fuel cell or electrolyzer stack in different orientations and locations. Pickup contacts 50 are designed to compensate for stack length variations, such as compression deformation from the seal and gas diffusion layers, inter-cell differences, and / or stack configurations based on power and / or space requirements. Pickup contacts 50 can be based on flexible spring wires.
[0054] Figure 9 A partial rear perspective view of a PCB 20 with an inserted pickup contact 50 is shown. Figure 10 A partial front perspective view of the same PCB 20 with an inserted pickup contact 50 is shown. In this case, the pickup contact 50 passes through two adjacent holes of the PCB 20 for optimal geometric alignment and to provide a robust electromechanical connection after soldering, as well as maximum robustness to mechanical loads and fatigue.
[0055] In another embodiment, Figure 11 The PCB 20 is shown with a single-ended opening 68 for each pickup contact 50. In this configuration, each pickup contact 50 can be directly positioned without micro-motion compensation. This is ideal for automated machine assembly using a pick-and-place method.
[0056] Pickup contacts 50 are preferably soldered to PCB 20 at four points 60, 62, 64, and 66 to further achieve maximum robustness against mechanical loads and fatigue. The first solder point 60 and the second solder point 62 may be areas where at least one pickup contact 50 intersects with the front side of PCB 20. The third solder point 64 and the fourth solder point 66 may be areas where at least one pickup contact intersects with the back side of PCB 20.
[0057] Figure 12 and Figure 13 The front and side views of the support frame 30 are shown respectively. Figure 13 As shown, the support frame 30 may include a slot 36 for holding the CVP unit 10. The support frame 30 may include a through hole 40 for mounting to the sliding rod 110.
[0058] like Figure 13 As shown, the support frame 30 may include a retaining mechanism 32 for holding the support frame 30 in place relative to the sliding rod 110. In one embodiment, the retaining mechanism 32 may include a screw 34. By tightening the screw 34, the diameter of the through hole 40 can be reduced, thereby securing the support frame 30 to the sliding rod 110.
[0059] In another embodiment, the retaining mechanism 32 may include a spring-loaded rod that interlocks with elements of the sliding rod 110 to secure the support frame 30 to the sliding rod 110.
[0060] In another embodiment, the retaining mechanism 32 includes a spring-loaded mechanism that applies friction to secure the support frame 30 to the sliding rod 110.
[0061] The support frame 30 can be manufactured by extrusion, additive manufacturing, molding, machining or any other production method, any of which can be used to economically manufacture the support frame 30 based on economies of scale.
[0062] The accompanying drawings and the foregoing description of these drawings are merely illustrative of the invention. The invention is not limited to the embodiments described above. Furthermore, all features of these embodiments can be combined in any possible manner and are provided interchangeably.
[0063] List of reference numerals
[0064] 10 Single-cell voltage pickup unit (CVP unit)
[0065] 12 Single-cell voltage pickup sub-assembly (CVP sub-assembly)
[0066] 20 Printed Circuit Board (PCB)
[0067] 22 Electrical connectors
[0068] 30 Support Frame
[0069] 32. Maintaining the organization
[0070] 34 screws
[0071] 36 slots
[0072] 40 through hole
[0073] 50 Pick-up Points
[0074] 60 First welding point
[0075] 62 Second welding point
[0076] 64 Third welding point
[0077] 66 Fourth welding point
[0078] 68 Single-ended opening hole
[0079] 70 Fastening screws
[0080] 100 Single-Cell Voltage Pickup Module (CVP Module)
[0081] 110 Sliding rod
[0082] 112 Retaining component
[0083] 114 Holding element
[0084] 120 Mounting bracket
Claims
1. A single-cell voltage pickup sub-assembly (12) for transmitting single-cell unit voltage to a single-cell voltage monitoring system, characterized in that, The single-cell voltage pickup sub-assembly includes: Printed circuit board (20), the printed circuit board being used for conducting electricity. A support frame (30) for holding the printed circuit board (20), wherein the support frame (30) includes at least one through hole (40) for mounting to the sliding rod (110), and At least one pickup contact (50) is provided for electrically connecting one of the single-cell units to the printed circuit board (20).
2. The single-cell voltage pickup sub-assembly (12) according to claim 1, characterized in that, The at least one pickup contact (50) passes through two different holes in the printed circuit board (20) to achieve maximum robustness against mechanical loads.
3. The single-cell voltage pickup sub-assembly (12) according to claim 2, characterized in that, The at least one pickup contact (50) is soldered to the printed circuit board (20) via four solder points to achieve maximum robustness against mechanical loads.
4. The single-cell voltage pickup sub-assembly (12) according to any one of claims 1 to 3, characterized in that, The support frame (30) includes a retaining mechanism (32) for holding the support frame (30) in place relative to the sliding rod (110).
5. The single-cell voltage pickup sub-assembly (12) according to any one of claims 1 to 3, characterized in that, The support frame (30) is manufactured by extrusion, 3D printing or other production methods.
6. The single-cell voltage pickup sub-assembly (12) according to any one of claims 1 to 3, characterized in that, At least one through hole (40) of the support frame (30) has a textured surface to enhance friction between the sliding rod (110) and the support frame (30).
7. The single-cell voltage pickup sub-assembly (12) according to any one of claims 1 to 3, characterized in that, The printed circuit board (20) is a rigid-flex printed circuit board.
8. A single-cell voltage pickup assembly (100) for mounting at least one single-cell voltage pickup sub-assembly (12) according to any one of claims 1 to 7 to a fuel cell or electrolyzer stack, characterized in that, The single-cell voltage pickup component includes: At least one single-cell voltage pickup sub-assembly (12). At least one sliding rod (110) for holding the support frame (30) of the at least one single-cell voltage pickup subassembly (12), wherein the at least one sliding rod (110) is guided through at least one through hole (40) of the support frame (30), and Two mounting brackets (120) are used to hold the at least one sliding rod (110) and secure the single-cell voltage pickup assembly (100) to the fuel cell or electrolyzer stack.
9. The single-cell voltage pickup assembly (100) according to claim 8, characterized in that, The at least one sliding rod (110) has a textured surface.
10. The single-cell voltage pickup assembly (100) according to claim 8 or 9, characterized in that, The at least one sliding rod (110) has a solid or hollow circular cross-section, a solid or hollow rectangular cross-section, a solid or hollow angular cross-section, or a solid or hollow T-shaped cross-section.
11. The single-cell voltage pickup assembly (100) according to claim 8 or 9, characterized in that, The single-cell voltage pickup system (100) includes a holding member (112) for preventing translational movement of the at least one sliding rod (110).
12. The single-cell voltage pickup assembly (100) according to claim 8 or 9, characterized in that, The two mounting brackets (120) are made of aluminum, thermoplastic, thermosetting, composite materials and / or stainless steel.
13. The single-cell voltage pickup assembly (100) according to claim 8 or 9, characterized in that, The single-cell voltage pickup assembly (100) includes a plurality of single-cell voltage pickup sub-assemblies (12) and a mechanism for automatically redistributing the support frame (30) of the plurality of single-cell voltage pickup sub-assemblies (12) according to the change in the inter-cell length of the fuel cell or electrolyzer stack.
14. A fuel cell or electrolyzer system, characterized in that, It has at least one fuel cell or electrolyzer stack and at least one single-cell voltage pickup assembly (100) according to any one of claims 8 to 13.
15. A method for assembling a single-cell voltage pickup assembly (100), characterized in that, The method comprises the following steps: The guide slide rod (110) passes through the through hole (40) of the support frame (30) of the single-cell voltage pickup subassembly (12), and The sliding rod (110) is fastened to the mounting bracket (120) on each side.