A cell holder for hydrogen fuel cell stack production
By designing a battery rack that automatically retracts and lubricates components, the problems of cumbersome operation and misoperation caused by manual intervention during the placement of hydrogen fuel cell stacks are solved, achieving efficient and stable stack placement and assembly.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TANGSHAN RUIWEI NEW ENERGY TECH CO LTD
- Filing Date
- 2025-09-25
- Publication Date
- 2026-07-24
AI Technical Summary
The existing method of retracting rolling components during the placement of hydrogen fuel cell stacks is cumbersome due to the reliance on manual intervention, which affects assembly efficiency and poses a risk of human error, potentially leading to inaccurate positioning and interface damage.
Design a battery rack that includes a base plate, an outer frame, and an automatic retraction assembly. The automatic retraction of the rollers is achieved by using structures such as cams, rotating shafts, and slides. Combined with a lubrication assembly, friction is reduced to ensure the stability of the battery stack when it is statically placed.
By combining automatic retraction and lubrication components, efficient and stable placement of the fuel cell stack is achieved, avoiding human error, improving assembly efficiency, and reducing frictional resistance.
Smart Images
Figure CN224546649U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of auxiliary equipment technology for battery production, specifically a battery rack for the production of hydrogen fuel cell stacks. Background Technology
[0002] The hydrogen fuel cell stack is the core power unit of a fuel cell system. After its manufacture, it requires proper storage and protection during the processes of off-line testing, warehousing, transportation to system integrators, and final installation in vehicles or power generation equipment. This process typically involves the use of a dedicated "battery rack" to place and secure the stack. A search revealed a battery rack, such as patent CN219203333U, which includes a support beam and a rolling assembly. The support beam includes a support surface for supporting the battery pack within the rack. The rolling assembly includes a first transmission rod, a first gear, a push rod, a second gear, and a roller. The first transmission rod is rotatably mounted on the support beam; the first gear is fixed to the first transmission rod; the push rod is slidably mounted on the support beam in a vertical direction; the second gear is fixed to the push rod and meshes with the first gear; the roller is mounted on the push rod, which drives the roller to move vertically. During this vertical movement, the top of the roller can be either above or below the support surface. This battery rack, equipped with a rolling assembly, allows for easy installation by a single person, reducing assembly difficulty and preventing scratches to the battery pack. Currently, during the placement of fuel cell stacks onto the battery rack, rolling components within the rack are typically used to reduce frictional resistance, thereby lessening the assembly burden. However, after this operation, manual intervention is still required to retract the rolling components and separate them from the stack to ensure the overall stability of the stack during static placement. This reliance on manual control not only affects assembly efficiency due to its cumbersome procedures but also introduces the risk of human error, potentially leading to a series of problems such as inaccurate stack positioning, interface damage, and even insufficient placement stability. Utility Model Content
[0003] The purpose of this invention is to provide a battery rack for the production of hydrogen fuel cell stacks, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: including a base plate and an outer frame, wherein the base plate is fixedly installed inside the outer frame, and multiple base plates are evenly distributed thereon; Mounting seats are provided on both sides inside the base plate. The mounting seats are slidably connected to the base plate through an automatic retraction component. Multiple rollers are rotatably mounted on the top of each of the two mounting seats. A lubrication component is provided on one side of each roller. The automatic retraction assembly includes a cam disposed at the bottom of the mounting base. A first rotating shaft is fixedly mounted on the inner wall of the cam. A groove is formed on the outer wall of the first rotating shaft. A slider is slidably connected inside the groove. The slider is fixedly mounted on the inner wall of a transmission shaft. The transmission shaft is slidably mounted on the outside of the first rotating shaft. A connecting plate is fixedly connected to the top of the transmission shaft. Control shafts are evenly mounted on the side wall of the connecting plate. The control shafts are disposed above the base plate.
[0005] Preferably, the connecting plate is slidably installed inside the outer frame, and springs are evenly connected between the connecting plate and the outer frame.
[0006] Preferably, the lubrication assembly includes a liquid storage tank disposed on one side of the roller, the liquid storage tank being fixedly installed on the top of the mounting base, a drain port being provided inside the liquid storage tank, a ball valve being rotatably installed inside the drain port, a second rotating shaft being fixedly connected to one side of the ball valve, a gear being fixedly installed at the end of the second rotating shaft away from the ball valve, and a rack plate being meshed with one side of the gear, the rack plate being fixedly installed inside the base plate.
[0007] Preferably, a lubricating roller is fitted to the bottom end of the roller, and the lubricating roller is rotatably mounted on the top of the mounting base.
[0008] Preferably, a coil spring is mounted on the outer wall of the second rotating shaft.
[0009] Preferably, one end of the drain port is connected to a liquid guiding groove, and the inner diameter of the liquid guiding groove gradually increases from the drain port along the direction of the lubrication roller.
[0010] Compared with the prior art, the beneficial effects of this application are: With the automatic retraction component set, when the fuel cell stack needs to be placed during operation, the fuel cell stack is first placed on the top of the base plate and then pushed inward. As the fuel cell stack moves on the top of the base plate, it contacts the top of the roller, reducing friction. When the fuel cell stack is placed inside the base plate, the fuel cell stack pushes the control shaft into the outer frame. The movement of the control shaft drives the movement of the connecting plate, which in turn drives the transmission shaft to slide on the outer wall of the first rotating shaft. At the same time, the movement of the transmission shaft drives the slider to slide on the inner wall of the slide groove. Guided by the slide groove, the first rotating shaft rotates. The rotation of the first rotating shaft drives the rotation of the cam, causing the cam's convex surface to rotate away from the mounting base. The mounting base naturally moves downward due to gravity, causing the roller to move downward and separate from the fuel cell stack. This allows the roller to automatically retract after the fuel cell stack is placed, avoiding the risk of human error and improving assembly efficiency. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of the battery rack for producing a hydrogen fuel cell stack according to this utility model; Figure 2 This is a schematic cross-sectional view of the battery rack base plate and outer frame structure for the production of a hydrogen fuel cell stack according to this utility model. Figure 3 This is a cross-sectional schematic diagram of the battery rack mounting base and liquid storage tank structure for the production of a hydrogen fuel cell stack according to this utility model. Figure 4 In the production of a hydrogen fuel cell stack according to this utility model, a battery rack is used. Figure 3 Enlarged diagram of point A in the middle.
[0012] In the diagram: 1. Base plate; 2. Outer frame; 3. Mounting base; 4. Roller; 5. Connecting plate; 6. Control shaft; 7. Slider; 8. Slide groove; 9. First rotating shaft; 10. Cam; 11. Liquid storage tank; 12. Drain outlet; 13. Ball valve; 14. Second rotating shaft; 15. Gear; 16. Rack plate; 17. Coil spring; 18. Lubricating roller; 19. Liquid guide groove; 20. Drive shaft; 21. Spring. Detailed Implementation
[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0014] Please see Figure 1-4 The present invention provides a technical solution: including a base plate 1 and an outer frame 2, wherein the base plate 1 is fixedly installed inside the outer frame 2, and multiple base plates 1 are evenly distributed; Mounting seats 3 are provided on both sides inside the base plate 1. The mounting seats 3 are slidably connected to the base plate 1 through an automatic retraction component. Multiple rollers 4 are rotatably mounted on the top of each of the two mounting seats 3. A lubrication component is provided on one side of each roller 4. The automatic retraction component includes a cam 10 located at the bottom of the mounting base 3. A first rotating shaft 9 is fixedly mounted on the inner wall of the cam 10. A groove 8 is provided on the outer wall of the first rotating shaft 9. A slider 7 is slidably connected inside the groove 8. The slider 7 is fixedly mounted on the inner wall of the drive shaft 20. The drive shaft 20 is slidably mounted on the outside of the first rotating shaft 9. A connecting plate 5 is fixedly connected to the top of the drive shaft 20. Control shafts 6 are evenly mounted on the side wall of the connecting plate 5. The control shafts 6 are located above the base plate 1.
[0015] With the automatic retraction component set, when the fuel cell stack needs to be placed during operation, the fuel cell stack is first placed on the top of the base plate 1, and then pushed inward. During the movement of the fuel cell stack on the top of the base plate 1, it contacts the top of the roller 4, reducing friction. When the fuel cell stack is placed inside the base plate 1, the fuel cell stack pushes the control shaft 6 into the outer frame 2. The movement of the control shaft 6 drives the movement of the connecting plate 5. The movement of the connecting plate 5 drives the transmission shaft 20 to slide on the outer wall of the first rotating shaft 9. At the same time, the movement of the transmission shaft 20 drives the slider 7 to slide on the inner wall of the slide groove 8. Guided by the slide groove 8, the first rotating shaft 9 is rotated. The rotation of the first rotating shaft 9 drives the rotation of the cam 10, causing the convex surface of the cam 10 to rotate away from the mounting base 3. The mounting base 3 naturally moves down due to gravity, causing the roller 4 to move down and separate from the fuel cell stack. Thus, the roller 4 automatically retracts after the fuel cell stack is placed, avoiding the risk of human error and improving assembly efficiency.
[0016] Reference Figure 2 and Figure 3 As shown, the connecting plate 5 is slidably installed inside the outer frame 2, and springs 21 are evenly connected between the connecting plate 5 and the outer frame 2.
[0017] When no fuel cell stack is placed on top of the base plate 1, the elastic potential energy of the spring 21 causes the connecting plate 5 to always have a tendency to move outward, thereby making the control shaft 6 outside the outer frame 2. When the fuel cell stack is placed on top of the base plate 1, the fuel cell stack pushes the control shaft 6 into the outer frame 2, while the spring 21 deforms to store elastic potential energy. When the charge stack on top of the base plate 1 is removed, it is reset by releasing the elastic potential energy through the spring 21.
[0018] Reference Figure 1-4 As shown, the lubrication assembly includes a liquid storage tank 11 disposed on one side of the roller 4. The liquid storage tank 11 is fixedly installed on the top of the mounting base 3. A drain port 12 is provided inside the liquid storage tank 11. A ball valve 13 is rotatably installed inside the drain port 12. A second rotating shaft 14 is fixedly connected to one side of the ball valve 13. A gear 15 is fixedly installed at the end of the second rotating shaft 14 away from the ball valve 13. A rack plate 16 is meshed with one side of the gear 15. The rack plate 16 is fixedly installed inside the base plate 1.
[0019] The interior of the liquid storage tank 11 is hollow and is pre-filled with lubricating fluid for lubricating the liquid storage tank 11; When the mounting base 3 is moved down after the fuel cell stack is placed, the movement of the mounting base 3 causes the gear 15 to move down. The gear 15 meshes with the rack plate 16 and rotates. The rotation of the gear 15 drives the rotation of the second rotating shaft 14. The rotation of the second rotating shaft 14 drives the rotation of the ball valve 13. The rotation of the ball valve 13 opens the drain port 12, allowing the lubricating fluid inside the storage tank 11 to be discharged to lubricate the roller 4, which can further reduce operating resistance and improve assembly efficiency.
[0020] Reference Figure 4 As shown, a lubrication roller 18 is attached to the bottom end of the roller 4, and the lubrication roller 18 is rotatably mounted on the top of the mounting base 3.
[0021] The lubrication roller 18 is made of a flexible material, such as closed-cell polyurethane foam, which has excellent elasticity and softness, and can conform well to the curved surface of the roller 4 to ensure even application. Its porous structure can absorb and lock in an appropriate amount of lubricating oil to prevent dripping; When lubricating roller 4, the lubricating roller 18 absorbs the lubricating liquid and then contacts the roller 4 to lubricate it. This not only avoids the spraying of oil mist or droplets, but also controls the amount and uniformity of the oil.
[0022] Reference Figure 4 As shown, a coil spring 17 is installed on the outer wall of the second rotating shaft 14.
[0023] When the mounting base 3 moves down, the gear 15 meshes with the rack plate 16 and rotates, the second rotating shaft 14 rotates, causing the coil spring 17 to deform and store elastic potential energy. When gear 15 separates from rack plate 16, the elastic potential energy is released by coil spring 17 to reset its rotation, thereby stopping the discharge of lubricating fluid and preventing excessive discharge.
[0024] Reference Figure 4 As shown, one end of the drain port 12 is connected to a liquid guide groove 19, and the inner diameter of the liquid guide groove 19 gradually increases from the drain port 12 along the direction of the lubrication roller 18.
[0025] The liquid guide groove 19 is inclined to one side from the drain port 12 toward the lubrication roller 18, and its internal diameter gradually increases; The lubricating oil is guided to facilitate contact with all surfaces of the lubrication roller 18, thereby ensuring uniform application.
[0026] The implementation principle of this application is as follows: When the electric stack needs to be placed, the electric stack is first placed on the top of the base plate 1, and then pushed inward. During the movement of the electric stack on the top of the base plate 1, it contacts the top of the roller 4, thereby reducing friction. When the fuel cell stack is placed inside the base plate 1, the stack pushes the control shaft 6 into the outer frame 2. The movement of the control shaft 6 causes the connecting plate 5 to move, which in turn causes the transmission shaft 20 to slide on the outer wall of the first rotating shaft 9. Simultaneously, the movement of the transmission shaft 20 causes the slider 7 to slide on the inner wall of the slide groove 8. Guided by the slide groove 8, the first rotating shaft 9 rotates, causing the cam 10 to rotate. This causes the convex surface of the cam 10 to rotate away from the mounting base 3. Due to gravity, the mounting base 3 naturally moves downward, causing the roller 4 to move downward and separate from the fuel cell stack. Thus, the roller 4 automatically retracts after the fuel cell stack is placed. When the mounting base 3 is moved down after the fuel cell stack is placed, the movement of the mounting base 3 causes the gear 15 to move down. The gear 15 meshes with the rack plate 16 and rotates. The rotation of the gear 15 drives the rotation of the second rotating shaft 14. The rotation of the second rotating shaft 14 drives the rotation of the ball valve 13. The rotation of the ball valve 13 opens the drain port 12, allowing the lubricating fluid inside the storage tank 11 to be discharged and guided through the guide groove 19 to one side of the lubrication roller 18 to be absorbed. The lubricating oil is then evenly coated on the surface of the roller 4 by the lubrication roller 18.
[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A battery rack for producing hydrogen fuel cell stacks, comprising a base plate (1) and an outer frame (2), characterized in that: The base plate (1) is fixedly installed inside the outer frame (2), and there are multiple base plates (1) evenly distributed; The base plate (1) is provided with mounting seats (3) on both sides inside. The mounting seats (3) are slidably connected to the base plate (1) through an automatic retraction component. Multiple rollers (4) are rotatably mounted on the top of each of the two mounting seats (3). A lubrication component is provided on one side of each roller (4). The automatic retraction component includes a cam (10) disposed at the bottom of the mounting base (3). A first rotating shaft (9) is fixedly mounted on the inner wall of the cam (10). A groove (8) is provided on the outer wall of the first rotating shaft (9). A slider (7) is slidably connected inside the groove (8). The slider (7) is fixedly mounted on the inner wall of the transmission shaft (20). The transmission shaft (20) is slidably mounted on the outside of the first rotating shaft (9). A connecting plate (5) is fixedly connected to the top of the transmission shaft (20). Control shafts (6) are evenly mounted on the side wall of the connecting plate (5). The control shafts (6) are disposed above the base plate (1).
2. The battery rack for producing a hydrogen fuel cell stack according to claim 1, characterized in that: The connecting plate (5) is slidably installed inside the outer frame (2), and springs (21) are evenly connected between the connecting plate (5) and the outer frame (2).
3. The battery rack for producing a hydrogen fuel cell stack according to claim 1, characterized in that: The lubrication assembly includes a liquid storage tank (11) disposed on one side of the roller (4). The liquid storage tank (11) is fixedly installed on the top of the mounting base (3). A drain port (12) is provided inside the liquid storage tank (11). A ball valve (13) is rotatably installed inside the drain port (12). A second rotating shaft (14) is fixedly connected to one side of the ball valve (13). A gear (15) is fixedly installed at the end of the second rotating shaft (14) away from the ball valve (13). A rack plate (16) is meshed with one side of the gear (15). The rack plate (16) is fixedly installed inside the base plate (1).
4. The battery rack for producing a hydrogen fuel cell stack according to claim 1, characterized in that: A lubricating roller (18) is attached to the bottom end of the roller (4), and the lubricating roller (18) is rotatably mounted on the top of the mounting base (3).
5. The battery rack for producing a hydrogen fuel cell stack according to claim 3, characterized in that: A coil spring (17) is installed on the outer wall of the second rotating shaft (14).
6. The battery rack for producing a hydrogen fuel cell stack according to claim 3, characterized in that: One end of the drain port (12) is connected to a liquid guide groove (19), and the inner diameter of the liquid guide groove (19) gradually increases from the drain port (12) along the direction of the lubrication roller (18).