Novel fuel cell insulation end plate structure

Abstract

A disclosed novel fuel cell insulation end plate structure comprises a mounting plate, one side of the mounting plate is provided with a fixed end plate, the outer side of the fixed end plate is provided with a sealing cushion layer, and the side wall of one side, close to the mounting plate, of the fixed end plate is fixedly connected with a fixed block; a fixing rod is fixedly connected to the end, away from the fixing end plate, of the fixing block, an adjusting groove is formed in the mounting plate, the position of the adjusting groove corresponds to that of the fixing rod, the adjusting groove penetrates through the mounting plate, and an adjusting plate is fixedly connected to the end, located on the inner side of the adjusting groove, of the fixing rod. According to the invention, when the fixed end plate is subjected to a force of thermal expansion and cold contraction, the fixed end plate is abutted to buffer the applied force, and meanwhile, a connecting spring and a damper are arranged, so that the buffer effect can be further achieved, the deformation of the fixed end plate is avoided, the leakage of a fuel cell is prevented, and the service life of the fuel cell is prolonged. And safe use of the fuel cell is facilitated.

Description

Technical Field

[0001] This invention relates to the field of fuel cell insulating end plates, and more particularly to a novel fuel cell insulating end plate structure. Background Technology

[0002] A fuel cell is a chemical device that directly converts the chemical energy of fuel into electrical energy; it is also known as an electrochemical generator. Because fuel cells convert the Gibbs free energy portion of the chemical energy of fuel into electrical energy through an electrochemical reaction, they are not limited by the Carnot cycle effect and are therefore highly efficient. In addition, fuel cells use fuel and oxygen as raw materials and have no mechanical transmission parts, so they emit very few harmful gases and have a long service life. Therefore, from the perspective of energy conservation and environmental protection, fuel cells are the most promising power generation technology, and thus they have been put into use in fields such as new energy vehicles.

[0003] In the actual operation of existing high-temperature fuel cells, the components inside the stack may expand and contract due to the high-temperature environment, which may cause deformation of the end plates of the fuel cell. This reduces the sealing effect of the end plates and may even lead to fuel cell leakage, which has a great impact on the safety of fuel cell use. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as the possibility that components within the fuel cell stack may expand and contract due to high temperatures, leading to deformation of the fuel cell endplates. This reduces the sealing effect of the endplates and may even cause fuel cell leakage, which greatly affects the safety of fuel cell use. Therefore, this invention proposes a novel fuel cell insulating endplate structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A novel fuel cell insulating endplate structure includes a mounting plate. A fixed endplate is disposed on one side of the mounting plate, and a sealing gasket layer is disposed on the outer side of the fixed endplate. A fixing block is fixedly connected to the side wall of the fixed endplate near the mounting plate, and a fixing rod is fixedly connected to the end of the fixing block away from the fixed endplate. An adjustment groove is formed on the mounting plate, the position of the adjustment groove corresponding to the fixing rod, and the adjustment groove extends through the mounting plate. An adjustment plate is fixedly connected to the end of the fixing rod located inside the adjustment groove, and the upper and lower inner walls of the adjustment groove can slide. Each movable plate is connected to an adjustment plate located near the fixed end plate. A sliding block is fixedly connected to one end of each movable plate near the inner wall of the adjustment groove. Sliding grooves matching the corresponding sliding blocks are formed on the upper and lower inner walls of the adjustment groove. A push rod is fixedly connected to the side wall of each movable plate near the fixed end plate. Each push rod extends to the outside of the adjustment groove, and a push block is fixedly connected to the end of each push rod away from the movable plate. A transmission structure is provided between each movable plate and the adjustment plate.

[0007] Preferably, the transmission structure includes connecting blocks slidably connected to the side walls of the moving plate and the adjusting plate. A second sliding block is fixedly connected to the side wall of each connecting block. A second sliding groove corresponding to the second sliding block is opened on the side wall of each pair of corresponding connecting blocks. A connecting groove is opened on the side wall of each pair of corresponding connecting blocks that are close to each other. A connecting shaft is fixedly connected between the front and rear inner walls of each connecting groove. A connecting rod is provided between the corresponding connecting shafts. The two ends of each connecting rod are respectively rotatably sleeved on the outside of the corresponding connecting shaft. An adjusting shaft is provided in the middle of each connecting shaft. The adjusting shaft passes through the corresponding connecting shaft. Each adjusting shaft is rotatably connected to the corresponding connecting shaft. The front and rear ends of each adjusting shaft are respectively fixedly connected to the inner wall of the adjusting groove through a mounting bracket.

[0008] Preferably, each of the two sliding blocks is fixedly connected to a connecting spring, and the end of each connecting spring away from the two sliding blocks is fixedly connected to the inner wall of the corresponding two sliding grooves.

[0009] Preferably, the mounting plate has multiple fixing slots on the side wall near the fixed end plate. A buffer spring is fixedly connected to the inner wall of each fixing slot. Each buffer spring extends out of the fixing slot and the end of each fixing slot away from the mounting plate is connected to the side wall of the fixed end plate. A damper is fixedly installed on each buffer spring and each buffer spring is fixedly connected to the side wall of the fixed end plate through the damper.

[0010] Preferably, the fixed end plate has mounting grooves at both the upper and lower ends, and each mounting groove has a mounting bolt on its inner wall. Each mounting bolt is located on the side of the mounting groove away from the fixed end plate, and each mounting bolt extends through the inner wall of the mounting groove to the outer side of the mounting plate.

[0011] Preferably, each of the push blocks is covered with a protective layer on its outer side.

[0012] Compared with the prior art, the beneficial effects of the present invention are: when the fixed end plate is subjected to the force of thermal expansion and contraction, it can cushion the force exerted on the fixed end plate. At the same time, the connection spring and damper are provided to further buffer the force, thereby avoiding deformation of the fixed end plate and preventing fuel cell leakage, which is conducive to the safe use of fuel cells. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of a novel fuel cell insulating endplate structure proposed in this invention.

[0014] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0015] Figure 3 This is a side-view perspective view of a novel fuel cell insulating endplate structure proposed in this invention.

[0016] Figure 4 This is a schematic diagram of a novel fuel cell insulating endplate structure proposed in this invention.

[0017] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0018] In the diagram: 1 Mounting plate, 2 Fixed end plate, 3 Fixed groove, 4 Buffer spring, 5 Mounting groove, 6 Mounting bolt, 7 Adjusting groove, 8 Adjusting plate, 9 Fixed rod, 10 Fixed block, 11 Moving plate, 12 Sliding block one, 13 Sliding groove one, 14 Connecting block, 15 Sliding block two, 16 Sliding groove two, 17 Connecting spring, 18 Connecting groove, 19 Connecting shaft, 20 Connecting rod, 21 Adjusting shaft, 22 Push rod, 23 Push block. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0020] Reference Figures 1-5A novel fuel cell insulating end plate structure includes a mounting plate 1. A fixed end plate 2 is disposed on one side of the mounting plate 1. A sealing gasket layer is disposed on the outer side of the fixed end plate 2, which can achieve a sealing effect to prevent fuel cell leakage. A fixing block 10 is fixedly connected to the side wall of the fixed end plate 2 near the mounting plate 1. A fixing rod 9 is fixedly connected to the end of the fixing block 10 away from the fixed end plate 2. An adjustment groove 7 is provided on the mounting plate 1. The position of the adjustment groove 7 corresponds to the fixing rod 9, and the adjustment groove 7 extends through the mounting plate 1. An adjustment plate 8 is fixedly connected to the end of the fixing rod 9 located inside the adjustment groove 7. Movable plates 11 are slidably connected to the upper and lower inner walls of the adjustment groove 7. Each movable plate 11 is provided with an adjustment plate 8 near the fixed end plate 2. Each movable plate 11 is provided with an adjustment plate 8 near the inner wall of the adjustment groove 7. A sliding block 12 is fixedly connected, and sliding grooves 13 matching the corresponding sliding block 12 are opened on the upper and lower inner walls of the adjustment groove 7. A push rod 22 is fixedly connected to the side wall of each moving plate 11 near the fixed end plate 2. Each push rod 22 extends to the outside of the adjustment groove 7, and a push block 23 is fixedly connected to the end of each push rod 22 away from the moving plate 11. A transmission structure is provided between each moving plate 11 and the adjustment plate 8. When the fixed end plate 2 is deformed outward by force, the fixed block 10 will move, thereby driving the fixed rod 9 to move, so that the adjustment plate 8 moves together. Under the action of the transmission structure, the moving plate 11 moves in the opposite direction to the moving direction of the adjustment plate 8, so that the push rod 22 and the push block 23 move together. The push block 23 blocks the fixed end plate 2 when the deformation is large, and provides buffer protection.

[0021] The transmission structure includes connecting blocks 14 slidably connected to the side walls of the moving plate 11 and the adjusting plate 8. A second sliding block 15 is fixedly connected to the side wall of each connecting block 14. Sliding grooves 16 corresponding to the second sliding block 15 are provided on the side walls of both the adjusting plate 8 and the moving plate 11. Connecting grooves 18 are provided on the side walls of every two corresponding connecting blocks 14 closest to each other. Connecting shafts 19 are fixedly connected between the front and rear inner walls of each connecting groove 18. Connecting rods 20 are provided between corresponding connecting shafts 19, with both ends of each connecting rod 20 rotatably sleeved on the outer side of the corresponding connecting shaft 19. An adjusting shaft is provided in the middle of each connecting shaft 19. 21. The adjusting shaft 21 passes through the corresponding connecting shaft 19, and each adjusting shaft 21 is rotatably connected to the corresponding connecting shaft 19. The front and rear ends of each adjusting shaft 21 are fixedly connected to the inner wall of the adjusting groove 7 through the mounting bracket. When the adjusting plate 8 moves, it drives the corresponding connecting block 14 to move accordingly. Under the action of the adjusting shaft 21, the connecting block 14 connected to the adjusting plate 8 moves in the horizontal direction and also moves in the vertical direction, so that the connecting shaft 19 rotates as a whole. The other end of the connecting shaft 19 pushes the corresponding connecting block 14 to move in the opposite direction to the moving direction of the adjusting plate 8, thereby pushing the corresponding moving plate 11 to move together.

[0022] Each sliding block 2 15 is fixedly connected to a connecting spring 17. The end of each connecting spring 17 away from the sliding block 2 15 is fixedly connected to the inner wall of the corresponding sliding groove 2 16. The connecting spring 17 can lubricate when the sliding block 2 15 moves, and can also assist the sliding block 2 15 and the connecting block 14 to return to their original positions.

[0023] Multiple fixing slots 3 are provided on the side wall of the mounting plate 1 near the fixed end plate 2. A buffer spring 4 is fixedly connected to the inner wall of each fixing slot 3. Each buffer spring 4 extends to the outside of the fixing slot 3, and the end of each fixing slot 3 away from the mounting plate 1 is connected to the side wall of the fixed end plate 2. A damper is fixedly installed on each buffer spring 4, and each buffer spring 4 is fixedly connected to the side wall of the fixed end plate 2 through the damper. In the actual operation of the high-temperature fuel cell, the components in the stack may undergo thermal expansion and contraction due to the high temperature environment, which will cause the fixed end plate 2 to be subjected to force. The buffer spring 4 and the damper work together to buffer the force received by the fixed end plate 2, protect the fixed end plate 2, avoid damage to the fixed end plate 2, and facilitate the long-term use of the fixed end plate 2.

[0024] Mounting slots 5 are provided at both the upper and lower ends of the fixed end plate 2. Each mounting slot 5 has a mounting bolt 6 on its inner wall. Each mounting bolt 6 is located on the side of the mounting slot 5 away from the fixed end plate 2, and each mounting bolt 6 extends through the inner wall of the mounting slot 5 to the outer side of the mounting plate 1. The mounting bolts 6 fix the mounting plate 1 and the fuel cell shell together, thereby fixing the fixed end plate 2 and enabling the fixed end plate 2 to function. At the same time, setting the mounting bolts 6 on the mounting plate 1 avoids affecting the deformation of the end plate and causing a decrease in the overall electrical performance of the fuel cell stack if the fixing bolts 6 are set on the fixed end plate 2. Each push block 23 is wrapped with a protective layer to prevent damage to the push block 23 or the fixed end plate 2.

[0025] In this invention, during use, the mounting plate 1 and the fuel cell casing are first fixed together using mounting bolts 6, thereby fixing the fixed end plate 2 as well, ensuring its effectiveness. Simultaneously, mounting bolts 6 are placed on the mounting plate 1 to prevent them from affecting the deformation of the end plate and causing a decrease in the overall electrical performance of the fuel cell stack. The sealing gasket on the outside of the fixed end plate 2 provides a sealing effect, preventing fuel cell leakage. Furthermore, during the actual operation of the high-temperature fuel cell, components within the stack may experience thermal expansion and contraction due to the high-temperature environment, causing forces to be applied to the fixed end plate 2. The buffer spring 4, in conjunction with the damper, buffers the forces received by the fixed end plate 2, protecting it. This design protects the fixed end plate 2 from damage, allowing it to be used for an extended period. When the fixed end plate 2 deforms outward under force, the fixed block 10 moves, which in turn moves the fixed rod 9, causing the adjusting plate 8 to move as well. As the adjusting plate 8 moves, the corresponding connecting block 14 moves accordingly. Under the action of the adjusting shaft 21, the connecting block 14 connected to the adjusting plate 8 moves horizontally and vertically, causing the connecting shaft 19 to rotate as a whole. The other end of the connecting shaft 19 then pushes the corresponding connecting block 14 to move in the opposite direction to the movement of the adjusting plate 8, causing the pushing rod 22 and the pushing block 23 to move together. The pushing block 23 holds the fixed end plate 2 in place when the deformation is large, providing cushioning protection.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A novel fuel cell insulating endplate structure, comprising a mounting plate (1), characterized in that, A fixed end plate (2) is provided on one side of the mounting plate (1). A sealing gasket layer is provided on the outer side of the fixed end plate (2). A fixing block (10) is fixedly connected to the side wall of the fixed end plate (2) near the mounting plate (1). A fixing rod (9) is fixedly connected to the end of the fixing block (10) away from the fixed end plate (2). An adjustment groove (7) is provided on the mounting plate (1). The position of the adjustment groove (7) corresponds to the fixing rod (9), and the adjustment groove (7) is provided through the mounting plate (1). An adjustment plate (8) is fixedly connected to the end of the fixing rod (9) located inside the adjustment groove (7). Moving plates (11) are slidably connected to the upper and lower inner walls of the adjustment groove (7). Each moving plate... (11) Each is provided with an adjustment plate (8) near the fixed end plate (2). Each movable plate (11) is fixedly connected to a sliding block (12) at one end near the inner wall of the adjustment groove (7). The upper and lower inner walls of the adjustment groove (7) are provided with sliding grooves (13) that match the corresponding sliding blocks (12). Each movable plate (11) is fixedly connected to a push rod (22) on one side wall near the fixed end plate (2). Each push rod (22) extends to the outside of the adjustment groove (7). Each push rod (22) is fixedly connected to a push block (23) at one end away from the movable plate (11). A transmission structure is provided between each movable plate (11) and the adjustment plate (8).

2. The novel fuel cell insulating endplate structure according to claim 1, characterized in that, The transmission structure includes connecting blocks (14) slidably connected to the side walls of the moving plate (11) and the adjusting plate (8). Each connecting block (14) has a sliding block (15) fixedly connected to its side wall. The side walls of the adjusting plate (8) and the moving plate (11) are provided with sliding grooves (16) corresponding to the sliding blocks (15). Each pair of corresponding connecting blocks (14) has a connecting groove (18) on the side wall closest to each other. A connecting shaft (19) is fixedly connected between the front and rear inner walls of each connecting groove (18). A connecting rod (20) is provided between each of the corresponding connecting shafts (19), and the two ends of each connecting rod (20) are respectively rotatably sleeved on the outside of the corresponding connecting shaft (19). An adjusting shaft (21) is provided in the middle of each connecting shaft (19). The adjusting shaft (21) passes through the corresponding connecting shaft (19), and each adjusting shaft (21) is rotatably connected to the corresponding connecting shaft (19). The front and rear ends of each adjusting shaft (21) are respectively fixedly connected to the inner wall of the adjusting groove (7) through the mounting bracket.

3. The novel fuel cell insulating endplate structure according to claim 2, characterized in that, Each of the two sliding blocks (15) is fixedly connected to a connecting spring (17), and one end of each connecting spring (17) away from the two sliding blocks (15) is fixedly connected to the inner wall of the corresponding sliding groove (16).

4. The novel fuel cell insulating endplate structure according to claim 1, characterized in that, The mounting plate (1) has multiple fixing slots (3) on the side wall near the fixed end plate (2). Each fixing slot (3) has a buffer spring (4) fixedly connected to its inner wall. Each buffer spring (4) extends out of the fixing slot (3) and is connected to the side wall of the fixed end plate (2) at the end of each fixing slot (3) away from the mounting plate (1). Each buffer spring (4) has a damper fixedly installed on it and is fixedly connected to the side wall of the fixed end plate (2) through the damper.

5. A novel fuel cell insulating endplate structure according to claim 1, characterized in that, The fixed end plate (2) has mounting grooves (5) at both the upper and lower ends. Each mounting groove (5) has a mounting bolt (6) on its inner wall. Each mounting bolt (6) is located on the side of the mounting groove (5) away from the fixed end plate (2) and extends through the inner wall of the mounting groove (5) to the outer side of the mounting plate (1).

6. The novel fuel cell insulating endplate structure according to claim 1, characterized in that, Each of the push blocks (23) is covered with a protective layer on its outer side.

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