Dual stack synchronous press device and press system for fuel cell

Abstract

The utility model discloses a kind of double stack synchronous press mounting device and press mounting system for fuel cell, it is related to fuel cell stack press mounting technical field, double stack synchronous press mounting device includes: cross link assembly, two press bars and force bar, cross link assembly includes multiple cross links, multiple cross links are sequentially arranged along first direction, and multiple cross links are all along second direction extension, two press bars are sequentially spaced apart along second direction, two press bars are all along first direction extension, press bar is rotatably connected with every cross link around rotating axis along third direction extension, force bar is along first direction extension, force bar is rotatably connected with every cross link around rotating axis along third direction extension, the interval distance between force bar and two press bars is equal.According to the double stack synchronous press mounting device of the application, the pressure received by two stacks during press mounting is consistent, the synchronous press mounting effect of fuel cell double stack can be improved, and the production efficiency of fuel cell double stack can be improved.

Description

Technical Field

[0001] This utility model relates to the field of fuel cell stack press-fit technology, and in particular to a dual-stack synchronous press-fit device for fuel cells and a press-fit system having the dual-stack synchronous press-fit device. Background Technology

[0002] In related technologies, fuel cell stacks are composed of hundreds of individual cells stacked together. Due to the tolerance in the height of the individual cells, the heights of two fuel cell stacks are inconsistent. Currently, in the integrated packaging process of dual fuel cell stacks, a single press head is generally used to press both stacks simultaneously. When the press head is used to press both stacks simultaneously, it will first contact and press the taller stack until the two stacks are the same height. Then, the press head will start to press the two stacks synchronously, resulting in the two stacks having the same final height. However, the pressure on the two stacks during the pressing process is different, affecting the synchronous pressing effect of the dual fuel cell stacks. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a dual-stack synchronous pressing device for fuel cells, in which the two stacks are subjected to the same pressure during the pressing process, thereby improving the synchronous pressing effect of dual fuel cell stacks, increasing the working efficiency of the dual-stack synchronous pressing device, and improving the production efficiency of dual fuel cell stacks.

[0004] This invention also proposes a pressing system using the aforementioned dual-stack synchronous pressing device for fuel cells.

[0005] A dual-stack synchronous pressing device for fuel cells according to a first aspect embodiment of the present invention includes: a crossbar assembly, two pressure rods, and a force-applying rod. The crossbar assembly includes multiple crossbars arranged sequentially along a first direction, and all of the crossbars extend along a second direction, where the first and second directions intersect. The two pressure rods are arranged sequentially at intervals along the second direction, and both pressure rods extend along the first direction. Each pressure rod is rotatably connected to each crossbar about a rotation axis extending along a third direction. The two pressure rods are used to press the fuel cell stack. The third direction is perpendicular to both the first and second directions. The force-applying rod extends along the first direction and is located between the two pressure rods. The force-applying rod is rotatably connected to each crossbar about a rotation axis extending along the third direction, and the spacing between the force-applying rod and the two pressure rods is equal along the extension direction of the crossbars.

[0006] The dual-stack synchronous pressing device for fuel cells according to the embodiments of this application, by setting multiple cross links that are rotatably connected to two pressure rods and force-applying rods, can automatically adjust according to the height difference between the two cells, so that the two pressure rods abut against the two fuel cell stacks respectively, so that the pressure on the two fuel cell stacks is consistent during the pressing process, that is, the magnitude and direction of the pressure on the two fuel cell stacks are the same. This can improve the synchronous pressing effect of dual fuel cell stacks, improve the working efficiency of the dual-stack synchronous pressing device, improve the production efficiency of dual fuel cell stacks, and promote the mass production process of dual fuel cell stack synchronous pressing.

[0007] According to some embodiments of the present invention, the force-applying rod and the two pressure rods are located on the same side of the cross link.

[0008] According to some embodiments of the present invention, one end of the pressure rod is formed with a pressing part for pressing the fuel cell stack, and one end of the force-applying rod is formed with a force-applying end. Along the first direction, the pressing part and the force-applying end are respectively located on both sides of the cross link assembly.

[0009] According to some embodiments of this utility model, the pressing part is constructed as a pressure plate structure.

[0010] According to some embodiments of the present invention, the pressing part is constructed as an elastic pressing structure.

[0011] According to some embodiments of the present invention, the pressing part includes: a first plate, a spring and a second plate, the first plate and the second plate are arranged and spaced apart along the extension direction of the pressing rod, and the first plate is located between the second plate and the pressing rod, the spring is connected between the first plate and the second plate, the first plate is connected to the pressing rod, and the second plate is used to press the fuel cell stack.

[0012] According to some embodiments of the present invention, the first plate is fixedly connected to the corresponding pressure rod.

[0013] According to some embodiments of this utility model, the cross link, the pressure bar, and the force-applying bar are all constructed as straight-line structures.

[0014] The press-fitting system according to a second aspect of the present invention includes the dual-stack synchronous press-fitting device for fuel cells described in the above embodiments.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of a dual-stack synchronous pressing device according to an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the assembly of the cross link assembly, two pressure bars and the force-applying bar according to an embodiment of this application;

[0019] Figure 3 This is another schematic diagram of a dual-stack synchronous pressing device according to an embodiment of this application.

[0020] Figure label:

[0021] Dual-stack synchronous pressing device 1,

[0022] Cross link assembly 10, cross link 11,

[0023] Pressure bar 20, pressing part 21, first plate 211, spring 212, second plate 213, first pressure bar 22, second pressure bar 23.

[0024] Force bar 30,

[0025] fuel cell stack 2. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] The following is for reference. Figures 1-3 The present invention describes a dual-stack synchronous pressing device 1 for fuel cells according to an embodiment of the present invention. The dual-stack synchronous pressing device 1 can be applied to a pressing system.

[0028] According to the first aspect of the present invention, a dual-stack synchronous pressing device 1 for fuel cells is provided, such as... Figures 1-3As shown, the dual-stack synchronous pressing device 1 for fuel cells may include: a crossbar assembly 10, two pressure rods 20, and a force-applying rod 30. The crossbar assembly 10 includes multiple crossbars 11, which are arranged sequentially along a first direction and extend along a second direction. The first and second directions intersect. The two pressure rods 20 are arranged sequentially at intervals along the second direction and extend along the first direction. The pressure rods 20 are rotatably connected to each crossbar 11 about a rotation axis extending along a third direction. The two pressure rods 20 are used to press the fuel cell stack 2. The third direction is perpendicular to both the first and second directions. The force-applying rod 30 extends along the first direction and is located between the two pressure rods 20. The force-applying rod 30 is rotatably connected to each crossbar 11 about a rotation axis extending along a third direction. The spacing between the force-applying rod 30 and the two pressure rods 20 is equal along the extension direction of the crossbars 11.

[0029] It should be noted that in related technologies, fuel cell stacks are composed of hundreds of individual cells stacked together. Due to the tolerance in the height of individual cells, the heights of two fuel cell stacks are inconsistent. Currently, in the integrated packaging process of dual fuel cell stacks, a single press head is generally used to press both stacks simultaneously. When the pressing device uses a single press head to press both stacks at the same time, the press head will first contact and press the taller stack until the two stacks are the same height. Then, the pressing device begins to press the two stacks synchronously, and the final height of the two stacks is the same. However, the pressure on the two stacks during the pressing process is different, which affects the synchronous pressing effect of the dual fuel cell stacks.

[0030] Based on this, this application proposes a dual-stack synchronous pressing device 1 for fuel cells, which can be used to synchronously press two fuel cell stacks 2. The crossbar assembly 10 may include multiple crossbars 11, the length of which may be the same, and the number of crossbars 11 may be two, three, four, etc. This application embodiment uses two crossbars 11 as an example for illustration. When the dual-stack synchronous pressing device 1 is not subjected to external force, the multiple crossbars 11 can be arranged sequentially along a first direction, and all of the multiple crossbars 11 can extend along a second direction, and the multiple crossbars 11 can be arranged parallel to each other. When the dual-stack synchronous pressing device 1 is subjected to... Figure 1 When setting the direction, the first direction can be... Figure 1 In the Z direction, the second direction can be Figure 1The X-direction, the first direction, and the second direction intersect. Two pressure rods 20 can be arranged alternately along the second direction, and both pressure rods 20 can extend along the first direction. The two pressure rods 20 can be arranged parallel to each other. The two pressure rods 20 can be connected to the two ends of the horizontal connecting rod 11 along the second direction, and both pressure rods 20 can be rotatably connected to each horizontal connecting rod 11. Each horizontal connecting rod 11 can be rotatably connected to the corresponding pressure rod 20 about a rotation axis extending along a third direction. The third direction can be perpendicular to both the first and second directions, and can be a direction perpendicular to the paper surface.

[0031] As an example, the pressure rod 20 can have a first connecting shaft, the central axis of which can be collinear with a rotation axis extending in a third direction. The cross link 11 can have a first connecting hole, which can be a through hole, the central axis of which can be collinear with a rotation axis extending in a third direction. The first connecting shaft can pass through the first connecting hole and be fitted with a fastener, thereby allowing the cross link 11 to rotate relative to the corresponding pressure rod 20 about the rotation axis extending in a third direction. Both ends of each cross link 11 along its extension direction can be connected to the corresponding pressure rod 20, and each cross link 11 can be rotatably connected to both pressure rods 20. Each cross link 11 can have two first connecting holes, and each pressure rod 20 can have two first connecting shafts. The two first connecting shafts can be spaced apart along the extension direction (i.e., the first direction) of the corresponding pressure rod 20, and the two first connecting shafts can be fitted one-to-one with the first connecting holes of the two cross links 11, thereby achieving the effect of rotatably connecting each pressure rod 20 to the two cross links 11.

[0032] Both pressure rods 20 can be used to press-fit the fuel cell stack 2. The two pressure rods 20 can be used to press-fit the two fuel cell stacks 2 respectively. If there is a height difference between the two stacks 2, the height of the two pressure rods 20 can be adjusted so that the two pressure rods 20 can abut against the two stacks 2 respectively, thereby achieving the effect of synchronous pressing of the two fuel cell stacks 2 by the dual-stack synchronous pressing device 1.

[0033] The press-fitting system may include a press, which can be assembled with a dual-stack synchronous press-fitting device 1. The press can apply pressure to the two fuel cells 2 via a force-applying rod 30. The force-applying rod 30 can extend along a first direction and can be located between two pressure rods 20. The force-applying rod 30 can be rotatably connected to both cross links 11. The force-applying rod 30 can be rotatably connected to each cross link 11 about a rotation axis extending along a third direction. The force-applying rod 30 can be connected to the midpoint of each cross link 11 along the extension direction of the cross link 11. The spacing between the force-applying rod 30 and the two pressure rods 20 is equal along the extension direction of the cross link 11.

[0034] As an example, the force-applying rod 30 can have a second connecting shaft, the central axis of which can be collinear with the rotation axis extending along a third direction. The cross link 11 can have a second connecting hole, which can be a through hole, the central axis of which can be collinear with the rotation axis extending along a third direction. The second connecting shaft can pass through the second connecting hole and be fitted with a fastener, thereby allowing the cross link 11 to rotate relative to the force-applying rod 30 about the rotation axis extending along a third direction. Each cross link 11 can have one second connecting hole, and each cross link 11 can have a second connecting hole formed at the midpoint of its extension direction. Each cross link 11 can be rotatably connected to the force-applying rod 30. The force-applying rod 30 can have two second connecting shafts, which can be spaced apart along the extension direction of the force-applying rod 30 (i.e., the first direction). The two second connecting shafts can be fitted with the second connecting holes of the two cross links 11 one-to-one, thereby achieving the effect of rotatably connecting the force-applying rod 30 to the two cross links 11.

[0035] The horizontal connecting rod 11 can rotate relative to the corresponding pressure rod 20 about a rotation axis extending in a third direction. The horizontal connecting rod 11 can rotate relative to the force-applying rod 30 about a rotation axis extending in a third direction. The interval between the two first connecting shafts of the pressure rod 20 can be equal to the interval between the two second connecting shafts of the force-applying rod 30, so that the two horizontal connecting rods 11 can always remain parallel. When the dual-stacking synchronous pressing device 1 is used to synchronously press two fuel cells 2, if there is a height difference between the two fuel cells 2, such as... Figure 3 As shown, for example, if the height of the right fuel cell stack 2 is greater than that of the left fuel cell stack 2, the cross link assembly 10 can rotate to adjust the relative height of the two pressure rods 20, so that the two pressure rods 20 can respectively abut against the two fuel cell stacks 2. When the cross link assembly 10 rotates, the two pressure rods 20 can always extend along the first direction, and the force-applying rod 30 can always extend along the first direction. Since the distance between the force-applying rod 30 and the two pressure rods 20 is always equal along the extension direction of the cross link 11, according to the lever balance principle, the reaction forces on the two pressure rods 20 are also always equal. When the forces on the two pressure rods 20 are equal, the cross link assembly 10 stops rotating, and the cross link assembly 10, the two pressure rods 20, and the force-applying rod 30 are in force balance.

[0036] When the press applies pressure to the two fuel cell stacks 2 through the force-applying rod 30, the force applied by the press acts on the two fuel cell stacks 2 through the cross link assembly 10 and the two pressure rods 20 respectively. Since the reaction forces on the two pressure rods 20 are always equal, the forces on the two fuel cell stacks 2 are always equal. Thus, during the synchronous pressing process of the two fuel cell stacks 2, the pressure on the two fuel cell stacks 2 can be kept consistent, and the height dimension changes of the two fuel cell stacks 2 can be the same. This can improve the synchronous pressing effect of the dual fuel cell stacks and increase the production efficiency of the dual fuel cell stacks, and can promote the mass production process of synchronous pressing of dual fuel cell stacks.

[0037] As an example, the two pressure rods 20 can be referred to as the first pressure rod 22 and the second pressure rod 23, respectively. Along the extension direction of the horizontal connecting rod 11, the distance between the first pressure rod 22 and the force-applying rod 30 can be referred to as the first lever arm L1, and the distance between the second pressure rod 23 and the force-applying rod 30 can be referred to as the second lever arm L2. The distance between the force-applying rod 30 and the two pressure rods 20 is always equal, satisfying the relationship: L1 = L2. When the press applies pressure to the two fuel cell stacks 2 through the force bar 30, the pressure on the first pressure bar 22 is F1, and the pressure on the second pressure bar 23 is F2. According to the lever principle, F1·L1=F2·L2, so the pressure on the first pressure bar 22 and the pressure on the second pressure bar 23 are equal. That is, the pressure on the two fuel cell stacks 2 is the same during the pressing process. In other words, the magnitude and direction of the pressure on the two fuel cell stacks 2 are the same, and the height dimension change of the two fuel cell stacks 2 during the pressing process can also be the same. The pressing effect of the dual-stack synchronous pressing device 1 on the two fuel cell stacks 2 is the same, which can improve the synchronous pressing effect of the dual fuel cell stacks.

[0038] In this embodiment, by setting multiple horizontal connecting rods 11 that are rotatably connected to two pressure rods 20 and force application rods 30, the horizontal connecting rod assembly 10 can automatically adjust according to the height difference between the two batteries, so that the two pressure rods 20 respectively abut against the two fuel cell stacks 2, so that the pressure on the two fuel cell stacks 2 is consistent during the pressing process, that is, the magnitude and direction of the pressure on the two fuel cell stacks 2 are the same, which can improve the synchronous pressing effect of the dual fuel cell stacks, improve the working efficiency of the dual stack synchronous pressing device 1, improve the production efficiency of the dual fuel cell stacks, and promote the mass production process of the synchronous pressing of dual fuel cell stacks.

[0039] In some embodiments of this utility model, the force-applying rod 30 and the two pressure rods 20 are located on the same side of the cross link 11.

[0040] The force-applying rod 30 and the two pressure rods 20 can both be located on the same side of the cross link 11 along the third direction. The force applied by the press through the force-applying rod 30 can be evenly distributed to the two pressure rods 20 through the cross link assembly 10, which can reduce local stress concentration, improve the load-bearing capacity of the dual-stacking synchronous pressing device 1, enhance the structural stability of the dual-stacking synchronous pressing device 1, and improve the reliability of the dual-stacking synchronous pressing device 1. Furthermore, by setting the force-applying rod 30 and the two pressure rods 20 on the same side of the cross link 11, the loss of force during transmission can be reduced, and the force acting on the force-applying rod 30 can be more effectively converted into pressure on the corresponding stack 2 by the two pressure rods 20. This can further improve the working efficiency of the dual-stacking synchronous pressing device 1, and also reduce the size of the dual-stacking synchronous pressing device 1 in the third direction, making the structure of the dual-stacking synchronous pressing device 1 more compact and enabling the miniaturization of the dual-stacking synchronous pressing device 1.

[0041] In some embodiments of this utility model, such as Figure 1 and Figure 3 As shown, one end of the pressure rod 20 is formed with a pressing part 21 for the piezoelectric stack 2, and one end of the force-applying rod 30 is formed with a force-applying end. Along the first direction, the pressing part 21 and the force-applying end are located on both sides of the cross link assembly 10.

[0042] Along the extension direction of the pressure rod 20 (i.e., the first direction), one end of the pressure rod 20 has a pressing part 21. The pressing part 21 can be used for the piezoelectric stack 2. Both pressure rods 20 can have pressing parts 21, and the pressing parts 21 of both pressure rods 20 can abut against the corresponding piezoelectric stack 2. When there is a height difference between the two piezoelectric stacks 2, the cross link assembly 10 can rotate, thereby adjusting the relative height of the pressing parts 21 of the two pressure rods 20. When the pressing parts 21 of the two pressure rods 20 can abut against the corresponding piezoelectric stacks 2 respectively, the cross link assembly 10 stops rotating, so that the dual-stack synchronous pressing device 1 can synchronously apply pressure to the two piezoelectric stacks 2. Compared with the prior art, the two pressing parts 21 of the dual-stack synchronous pressing device 1 of this application can move relative to each other, and can achieve the effect of independently adjusting the height of the two pressing parts 21. By adjusting the height difference of the two pressing parts 21, the pressing parts 21 of the two pressing rods 20 can respectively abut against the two fuel cells 2, thereby achieving the effect of synchronously pressing the two fuel cells 2 by the dual-stack synchronous pressing device 1.

[0043] Along the extension direction of the force-applying rod 30 (i.e., the first direction), one end of the force-applying rod 30 is formed with a force-applying end, which can be located at the end of the force-applying rod 30 away from the transverse connecting rod assembly 10 along the extension direction of the force-applying rod 30. The press can apply pressure to the two fuel cells 2 through the force-applying end. The pressure applied by the press through the force-applying end can act evenly on the two pressure rods 20. The two pressure rods 20 can apply pressure to the corresponding fuel cells 2 through the corresponding pressing parts 21, thereby realizing the effect of applying pressure to the two fuel cells 2 by the dual-fuel cell synchronous pressing device 1.

[0044] Along the first direction, the pressing part 21 and the force-applying end can be located on both sides of the horizontal connecting rod assembly 10, respectively. The pressure applied to the horizontal connecting rod assembly 10 by the force-applying end of the dual-stack synchronous pressing device 1 can be equal to the sum of the forces reacted by the two pressing rods 20 on the horizontal connecting rod assembly 10, thus balancing the forces on the horizontal connecting rod assembly 10. As an example, the pressure on the first pressing rod 22 is equal to the force reacted by the first pressing rod 22 on the horizontal connecting rod assembly 10, and the pressure on the second pressing rod 23 is equal to the force reacted by the second pressing rod 23 on the horizontal connecting rod assembly 10. The pressure applied to the horizontal connecting rod assembly 10 by the force-applying end of the dual-stack synchronous pressing device 1 can be denoted as F3, satisfying the relationship: F1 + F2 = F3. This reduces the possibility of the horizontal connecting rod assembly 10 tilting, twisting, or deforming due to uneven force, which is beneficial to further improving the structural stability and balance of the entire dual-stack synchronous pressing device 1, and further improving the reliability of the dual-stack synchronous pressing device 1.

[0045] In some embodiments of this utility model, the pressing part 21 is constructed as a pressure plate structure.

[0046] The pressure plate structure of the pressing part 21 can increase the contact area with the corresponding fuel cell stack 2, so that the pressure can be evenly distributed on the corresponding fuel cell stack 2, which can reduce force loss and energy loss. The pressure plate structure can more effectively transmit the force from the pressure rod 20 to the corresponding fuel cell stack 2. Furthermore, by constructing the pressure plate structure of the pressing part 21, the probability of damage to the fuel cell stack 2 due to excessive local pressure can be reduced, which is conducive to further improving the stability and reliability of the dual-stack synchronous pressing device 1.

[0047] In some embodiments of this utility model, such as Figure 1 and Figure 3 As shown, the pressing part 21 is constructed as an elastic pressing structure.

[0048] The elastic pressing structure can include an elastic element, such as a spring 212. The elastic pressing structure effectively buffers the impact of pressure. When the pressure rod 20 transmits force to the corresponding pressing part 21, the elastic element can absorb part of the impact force, thereby reducing the risk of damage to the fuel cell stack 2 due to excessive instantaneous pressure, and providing good protection for the fuel cell stack 2. The elastic pressing structure can evenly transmit the pressure of the corresponding pressure rod 20 to the corresponding fuel cell stack 2, reducing the probability of deformation or damage to the fuel cell stack 2 due to excessive local pressure. This improves the reliability and stability of the pressing part 21 when pressing against the corresponding fuel cell stack 2, and further enhances the reliability of the dual-stack synchronous pressing device 1.

[0049] In some embodiments of this utility model, such as Figure 1As shown, the pressing part 21 may include: a first plate 211, a spring 212 and a second plate 213. The first plate 211 and the second plate 213 are arranged and spaced apart along the extension direction of the pressure rod 20, and the first plate 211 is located between the second plate 213 and the pressure rod 20. The spring 212 is connected between the first plate 211 and the second plate 213. The first plate 211 is connected to the pressure rod 20, and the second plate 213 is used for the piezoelectric stack 2.

[0050] The first plate 211 and the second plate 213 can be arranged along the extension direction (i.e., the first direction) of the corresponding pressure rod 20, and the first plate 211 and the second plate 213 can be arranged opposite to each other and spaced apart along the extension direction of the corresponding pressure rod 20. The first plate 211 can be located between the corresponding pressure rod 20 and the second plate 213, and the spring 212 can be connected between the first plate 211 and the second plate 213. The spring 212 can be fixedly connected to the first plate 211 and the second plate 213. The first plate 211 is connected to the corresponding pressure rod 20, and the second plate 213 can abut against the corresponding piezoelectric stack 2. The second plate 213 can be used for the piezoelectric stack 2.

[0051] When the press applies pressure through the force-applying end, the pressure first acts on the first plate 211, and then is transmitted to the second plate 213 through the spring 212. The spring 212 can undergo elastic deformation, which can effectively buffer the impact of the pressure, making the pressing process more stable. Furthermore, by setting the spring 212, the pressure can be evenly transmitted to the second plate 213, which can reduce the probability of the second plate 213 being deformed or damaged due to excessive local pressure, and can achieve a stable pressing effect.

[0052] In some embodiments of this utility model, such as Figure 1 As shown, the first plate 211 is fixedly connected to the corresponding pressure rod 20.

[0053] The first plate 211 and the corresponding pressure rod 20 can be fixedly connected by welding, snap-fitting, etc. The pressure rod 20 can be perpendicular to the corresponding first plate 211, so that the first plate 211 can apply force to the corresponding pressure rod 20 along the extension direction of the corresponding pressure rod 20. The pressure rod 20 can always extend along the first direction, and both pressure rods 20 can be subjected to force from the first direction. Along the extension direction of the cross link 11, the distance between the force-applying rod 30 and the two pressure rods 20 is equal. According to the lever balance principle, the magnitude of the force on the two pressure rods 20 can always be equal, that is, the magnitude and direction of the force on the two pressure rods 20 are always equal, so that the magnitude and direction of the force applied by the two pressure rods 20 to the corresponding fuel cell stack 2 are always the same. This further makes the pressure on the two fuel cell stacks 2 consistent during the pressing process, which can further improve the synchronous pressing effect of the dual fuel cell stacks and better improve the working efficiency of the dual stack synchronous pressing device 1.

[0054] In some embodiments of this utility model, such as Figure 2 As shown, the two compression rods 20 are symmetrical about the force-applying rod 30.

[0055] Along the extension direction of the cross link 11, the spacing between the force-applying rod 30 and the two pressure rods 20 is equal. Both pressure rods 20 extend along the first direction and are symmetrical about the force-applying rod 30, making it easier for the cross link assembly 10 and the two pressure rods 20 to maintain balance during the force application process. When there is a height difference between the two fuel cells 2, and the cross link assembly 10 needs to rotate to adjust the relative height of the pressing parts 21 of the two pressure rods 20, the cross link assembly 10 can stop rotating more quickly, which is beneficial to improving the response speed of the dual-fuel cell synchronous pressing device 1 and further improving its working efficiency. Furthermore, the force applied by the press through the force-applying rod 30 can be evenly distributed to the two pressure rods 20, with each pressure rod 20 experiencing equal force. This reduces local stress concentration caused by uneven force distribution, thereby reducing the risk of inconsistent pressure on the two fuel cells 2 and further improving the reliability of the dual-fuel cell synchronous pressing device 1.

[0056] In some embodiments of this utility model, such as Figure 3 As shown, the horizontal connecting rod 11, the compression rod 20, and the force-applying rod 30 are all constructed as straight lines.

[0057] By constructing the cross link 11, pressure bar 20, and force application bar 30 as straight lines, the processing difficulty can be reduced, which is beneficial to improving production efficiency and reducing manufacturing costs. Furthermore, the straight structure allows force to be transmitted along the axial direction of the corresponding bars, reducing force loss and offset during transmission. When the press applies force through the force application bar 30, the force can be transmitted more directly through the cross link 11 to the two pressure bars 20, and then act on the corresponding fuel cell stack 2. The force transmission path is clear, and the force acting on the force application bar 30 can be more effectively converted into pressure on the two fuel cell stacks 2, which is more conducive to improving the working efficiency of the dual-stack synchronous pressing device 1.

[0058] The press-fitting system according to a second aspect of the present invention includes the dual-stack synchronous press-fitting device 1 for fuel cells described in the above embodiments.

[0059] According to the pressing system of the present application embodiment, using the dual-stack synchronous pressing device 1 in the above embodiment can improve the working efficiency of the pressing system and improve the reliability and stability of the pressing system.

[0060] Other components and operations of the dual-stack synchronous pressing device 1 and pressing system according to the embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A dual-stack synchronous pressing device for fuel cells, characterized in that, include: A cross link assembly (10) includes a plurality of cross links (11), which are arranged sequentially along a first direction and extend along a second direction, wherein the first direction and the second direction intersect. Two pressure rods (20) are arranged at intervals along the second direction. Both pressure rods (20) extend along the first direction. Each pressure rod (20) is rotatably connected to each of the cross links (11) about a rotation axis extending along a third direction. The two pressure rods (20) are used to press the fuel cell stack (2). The third direction is perpendicular to both the first direction and the second direction. A force-applying rod (30) extends along the first direction and is located between the two pressure rods (20). The force-applying rod (30) is rotatably connected to each of the transverse connecting rods (11) about a rotation axis extending along the third direction, and the force-applying rod (30) is spaced apart from the two pressure rods (20) along the extension direction of the transverse connecting rods (11).

2. The double stack synchronous pressing device for a fuel cell according to claim 1, wherein The force-applying rod (30) and the two pressure rods (20) are located on the same side of the cross link (11).

3. The double stack synchronous pressing device for a fuel cell according to claim 1, wherein One end of the pressure rod (20) is formed with a pressing part (21) for pressing the fuel cell stack (2), and one end of the force-applying rod (30) is formed with a force-applying end. Along the first direction, the pressing part (21) and the force-applying end are respectively located on both sides of the cross link assembly (10).

4. The double stack synchronous pressing device for a fuel cell according to claim 3, wherein The pressing part (21) is constructed as a pressure plate structure.

5. The dual stack synchronous pressing device for a fuel cell according to claim 3, wherein The pressing part (21) is constructed as an elastic pressing structure.

6. The dual stack synchronous pressing apparatus for a fuel cell according to claim 5, wherein The pressing part (21) includes: a first plate (211), a spring (212) and a second plate (213). The first plate (211) and the second plate (213) are arranged and spaced apart along the extension direction of the pressure rod (20). The first plate (211) is located between the second plate (213) and the pressure rod (20). The spring (212) is connected between the first plate (211) and the second plate (213). The first plate (211) is connected to the pressure rod (20). The second plate (213) is used to press the fuel cell stack (2).

7. The dual stack synchronous pressing apparatus for a fuel cell according to claim 6, wherein The first plate (211) is fixedly connected to the corresponding pressure rod (20).

8. The dual stack synchronous pressing apparatus for a fuel cell according to any one of claims 1 to 7, characterized by The cross link (11), the pressure bar (20), and the force-applying bar (30) are all constructed as straight lines.

9. A press-fit system characterized by, Includes a dual-stack synchronous press-fit device (1) for fuel cells according to any one of claims 1-8.

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