Multifunctional positive and negative stacking device for hydrogen fuel cell stack core

Abstract

The utility model relates to a multifunctional positive and negative stacking device for a hydrogen fuel cell stack core, which comprises a base, a rotary press-fitting component, a tooling module, a motor component and bearing seats, the rotary press-fitting component is mounted on the base by matching with the two bearing seats, the motor component is fixed on the base, and the tooling module is mounted on the base. The motor assembly drives the rotary press-fitting assembly to rotate clockwise, the rotary press-fitting assembly is supported on the base to rotate, and the tool module and the rotary press-fitting assembly are locked through a pin and a bolt. The multifunctional positive and negative stacking device for the hydrogen fuel cell stack core has the full-stroke pressing capacity, and the servo press is matched with the pressure sensor to achieve closed-loop control. And a press fitting force curve is monitored in real time, overturning is conducted within the range of 0-180 degrees, and a human-computer interface is friendly. According to the utility model, the positive and negative assembling of the fuel cell stack core can be realized, the assembling and rapid dismounting of the fuel cell stack core can be realized, and the air tightness detection can be compatible.

Description

Technical Field

[0001] The utility model relates to the field of hydrogen fuel cells, especially to the field of fuel cell stacks, and specifically refers to a multi-functional positive and negative stacking device for the core of a hydrogen fuel cell stack. Background Art

[0002] A hydrogen fuel cell is a device that directly converts the chemical energy stored in fuel and oxidant into electrical energy through an electrochemical method. A hydrogen fuel cell includes a plurality of single cells, a plurality of single cells and sealing elements, and two end plates are stacked and pressed to form a fuel cell stack and encapsulated in a fuel cell stack packaging structure.

[0003] Currently, the demand for hydrogen fuel cell systems has increased, and the demand for fuel cell stacks has also increased accordingly. Semi-automatic fuel cell stack assembly devices have also emerged. However, the current fuel cell stack assembly equipment on the market does not have full-stroke pressing. When pressing a fuel cell stack with low pressing power, a thick plate needs to be placed at the bottom of the equipment; it is rather troublesome to replace the pressing mechanism and it cannot be compatible with more models of fuel cell stacks;

[0004] Due to the end plate effect of the fuel cell stack, after long-term use, the bipolar plate membrane motors on both sides need to be disassembled and replaced. Currently, the stacking devices on the market require a large amount of manual labor to remove all the bipolar plate membrane electrodes and then replace them, consuming a lot of labor. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above-mentioned disadvantages of the prior art and provide a multi-functional positive and negative stacking device for the core of a hydrogen fuel cell stack that meets the requirements of low cost, simple operation and wide application range.

[0006] In order to achieve the above purpose, the multi-functional positive and negative stacking device for the core of a hydrogen fuel cell stack of the utility model is as follows:

[0007] The multi-functional positive and negative stacking device for the core of a hydrogen fuel cell stack mainly features that the device includes a base, a rotary pressing assembly, a tooling module, a motor assembly and a bearing seat. The rotary pressing assembly is installed on the base by cooperating with two bearing seats. The motor assembly is fixed on the base. The motor assembly drives the rotary pressing assembly to rotate clockwise. The rotary pressing assembly is supported to rotate on the base. The tooling module is locked with the rotary pressing assembly through pins and bolts.

[0008] The rotary pressing assembly includes a bottom plate, a driving shaft, a left side plate, a top plate, a right side plate and a driven shaft. The driving shaft is fixed on the left side plate. The driven shaft is fixed on the right side plate. The rotary pressing assembly is fixed on the bearing seat through the driving shaft and the driven shaft. The bottom plate is located at the bottom of the rotary pressing assembly. The top plate is located at the top of the rotary pressing assembly.

[0009] Preferably, the rotary press-fitting assembly includes a press-fitting module, and the press-fitting module includes a servo motor, a pressure plate, two sets of lead screw assemblies, four guide rods, a synchronous belt, two driven wheels and a driving wheel. The servo motor is mounted on the bottom plate through a motor mounting plate. The lower end of the servo motor is connected to the driving wheel, and power is transmitted to the two driven wheels through the synchronous belt. The two sets of lead screw assemblies are fixed between the bottom plate and the top plate, and the guide rods are fixed between the bottom plate and the top plate. The driven wheels are mounted at the lower ends of the lead screw assemblies and rotate synchronously with the lead screw assemblies.

[0010] Preferably, the rotary press-fitting assembly further includes a tensioning mechanism, and the tensioning mechanism makes the synchronous belt fit with the driving wheel and the driven wheels.

[0011] Preferably, the rotary press-fitting assembly further includes a tooling plate, and the tooling plate is located on the bottom plate. The tooling module is fixed on the tooling plate of the rotary press-fitting assembly, positioned by pins and locked by bolts.

[0012] Preferably, the tooling module includes a lower end plate, positioning blocks, an upper end plate, six positioning rods and high-precision positioning pins. The upper end plate is fixed on the pressure plate by positioning pins and bolts. The lower end plate is fixed on the tooling plate by positioning pins and bolts. The six positioning rods are installed between the lower end plate and the upper end plate. The positioning blocks and the high-precision positioning pins are installed on the lower end plate.

[0013] Preferably, the tooling module further includes a high-precision positioning long strip plate, and the high-precision positioning long strip plate is installed inside the positioning rods.

[0014] The hydrogen fuel cell stack core multi-functional positive and negative stacking device adopting the present invention has the full-stroke press-fitting ability. The servo press cooperates with the pressure sensor to achieve closed-loop control. The press-fitting force curve is monitored in real time, and it can be flipped within the range of 0-180°. The human-machine interface is friendly. The present invention can realize the positive and negative direction assembly of the fuel cell stack core, can realize the assembly and rapid disassembly and replacement of the fuel cell stack core, and can be compatible with airtightness detection. The data of the present invention can be traced, and the safety requirements of the press-fitting process are ensured through motor brakes, gratings, brakes and mechanical devices. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of the hydrogen fuel cell stack core multi-functional positive and negative stacking device of the present invention.

[0016] Figure 2 It is a schematic structural diagram of the rotary press-fitting assembly of the hydrogen fuel cell stack core multi-functional positive and negative stacking device of the present invention.

[0017] Figure 3It is the bottom view of the rotary pressing assembly of the multi-functional positive and negative stacking device for the hydrogen fuel cell stack core of the present utility model.

[0018] Figure 4 It is the component diagram of the tooling module of the multi-functional positive and negative stacking device for the hydrogen fuel cell stack core of the present utility model.

[0019] Reference numerals:

[0020] 1 Base

[0021] 2 Brake

[0022] 3 Bearing seat

[0023] 4 Rotary pressing assembly

[0024] 5 Electric cabinet

[0025] 6 Motor assembly

[0026] 7 Display

[0027] 8 Longitudinal grating

[0028] 9 Transverse grating

[0029] 10 Tooling module

[0030] 11 Bottom plate

[0031] 12 Tooling plate

[0032] 13 Driving shaft

[0033] 14 Left side plate

[0034] 15 Servo motor

[0035] 16 Pressing plate

[0036] 17 Top plate

[0037] 18 Lead screw assembly

[0038] 19 Guide rod

[0039] 20 Right side plate

[0040] 21 Driven shaft

[0041] 22 Timing belt

[0042] 23 Driven pulley

[0043] 24 Tensioning mechanism

[0044] 25 Driving pulley

[0045] 26 Motor mounting plate

[0046] 27 Lower end plate

[0047] 28 Positioning block

[0048] 29 Upper positioning block

[0049] 30 Upper end plate

[0050] 31 Positioning rod

[0051] 32 High-precision positioning long strip plate

[0052] 33 Quick-insert positioning pin

[0053] 34 High-precision positioning pin Detailed implementation manners

[0054] In order to more clearly describe the technical content of the present invention, the following will be further described in conjunction with specific embodiments.

[0055] The multi-functional positive and reverse mounting stack device for the hydrogen fuel cell stack core of the present invention includes a base 1, a rotary pressing assembly 4, a tooling module 10, a motor assembly 6 and a bearing seat 3. The rotary pressing assembly 4 is installed on the base 1 by cooperating with two bearing seats 3. The motor assembly 6 is fixed on the base 1. The motor assembly 6 drives the rotary pressing assembly 4 to rotate clockwise. The rotary pressing assembly 4 is supported to rotate on the base 1. The tooling module 10 is locked with the rotary pressing assembly 4 by pins and bolts.

[0056] The rotary pressing assembly includes a bottom plate 11, a driving shaft 13, a left side plate 14, a top plate 17, a right side plate 20 and a driven shaft 21. The driving shaft 13 is fixed on the left side plate 14. The driven shaft 21 is fixed on the right side plate 20. The rotary pressing assembly 4 is fixed on the bearing seat 3 through the driving shaft 13 and the driven shaft 21. The bottom plate 11 is located at the bottom of the rotary pressing assembly 4. The top plate 17 is located at the top of the rotary pressing assembly 4.

[0057] As a preferred implementation manner of the present invention, the rotary pressing assembly 4 includes a pressing module. The pressing module includes a servo motor 15, a pressing plate 16, two sets of lead screw assemblies 18, four guide rods 19, a synchronous belt 22, two driven pulleys 23 and a driving pulley 25. The servo motor 15 is installed on the bottom plate 11 through a motor mounting plate 26. The lower end of the servo motor 15 is connected to the driving pulley 25, and power is transmitted to the two driven pulleys 23 through the synchronous belt 22. The two sets of lead screw assemblies 18 are fixed between the bottom plate 11 and the top plate 17. The guide rods 19 are fixed between the bottom plate 11 and the top plate 17. The driven pulleys 23 are installed at the lower ends of the lead screw assemblies 18, and the driven pulleys 23 rotate synchronously with the lead screw assemblies 18.

[0058] As a preferred embodiment of the present utility model, the rotary press-fitting assembly 4 further includes a tensioning mechanism 24, and the tensioning mechanism 24 makes the synchronous belt fit with the driving wheel 25 and the driven wheel 23.

[0059] As a preferred embodiment of the present utility model, the rotary press-fitting assembly 4 further includes a tooling plate 12. The tooling plate 12 is located on the bottom plate 11, and the tooling module 10 is fixed on the tooling plate 12 of the rotary press-fitting assembly 4, and is positioned by pins and locked by bolts.

[0060] As a preferred embodiment of the present utility model, the tooling module 10 includes a lower end plate 27, a positioning block 28, an upper end plate 30, six positioning rods 31 and a high-precision positioning pin 34. The upper end plate 30 is fixed on the pressing plate 16 by positioning pins and bolts. The lower end plate 27 is fixed on the tooling plate 12 by positioning pins and bolts. The six positioning rods 31 are installed between the lower end plate 27 and the upper end plate 30. The positioning block 28 and the high-precision positioning pin 34 are installed on the lower end plate 27.

[0061] As a preferred embodiment of the present utility model, the tooling module 10 further includes a high-precision positioning long strip plate 32, and the high-precision positioning long strip plate 32 is installed inside the positioning rod 31.

[0062] In the specific embodiment of the present utility model, in combination with the servo motor + lead screw and belt drive form, the equipment can reach the full stroke, and products of the same model are suitable for fuel cells with different power sizes; the replacement of the press-fitting mechanism is simple, and more product models can be compatible; it can rotate 180 degrees to realize forward and reverse assembly, and quickly replace the bipolar plates and membrane electrodes near the two side end plates; the positioning mechanism is simple and accurate, the placement of materials is simple, and a safety protection module is added.

[0063] The device of the present utility model includes a rotary press-fitting assembly 4, a tooling module 10, a frame module, etc.

[0064] The rotary press-fitting assembly 4 is cooperated with two bearing seats 3 and installed on the base 1. The rotary press-fitting assembly 4 can rotate on the base 1. The rotary power mechanism of the rotary press-fitting assembly 4 is a motor assembly 6 fixed on the base 1. The motor assembly 6 drives the rotary press-fitting assembly 4 to rotate clockwise, and the rotation angle is 0 to 180°. The motor assembly 6 is equipped with a built-in brake system and a brake 2 to protect the rotary press-fitting assembly 4, so that the equipment can stop at any appropriate angle.

[0065] The positioning between the tooling module 10 and the rotary press-fitting assembly 4 is achieved through corresponding pins and locked with bolts; the longitudinal grating 8 and the transverse grating 9 play a role in safety protection in the equipment. The press-fitting rotation control of the entire equipment is operated on the display 7, and the interface is simple and easy to operate; all the electrical accessories of the entire equipment are integrated in the electrical cabinet 5.

[0066] The rotary press-fitting assembly 4 mainly consists of a structural framework composed of a left side plate 14, a right side plate 20, a bottom plate 11, and a top plate 17. The rotary press-fitting assembly 4 is fixed on the bearing seat 3 through the driving shaft 13 and the driven shaft 21 fixed on the side plates to achieve the purpose of rotation. The tooling module 10 is fixed on the tooling plate 12, positioned by pins and locked with bolts. And there is a pressure sensor on the lower end face to monitor the pressure value in real time, and there is also an adjustment column to facilitate the adjustment of the flatness of the plane and avoid dimensional errors caused by other components.

[0067] The press-fitting module of the rotary press-fitting assembly 4 mainly consists of a pressure plate 16, four guide rods 19, two sets of lead screw assemblies 18, a servo motor 15, and a bottom driving wheel 25, a driven wheel 23, and a synchronous belt 22. The guide rods 19 are fixed between the bottom plate 11 and the top plate 17 and play a guiding role when the pressure plate 16 moves up and down; the servo motor 15 is installed on the bottom plate 11 through the motor mounting plate 26, and the lower end is connected to the driving wheel 25. The power is transmitted to the two driven wheels 23 through the synchronous belt 22, and the tensioning mechanism 24 can make the synchronous belt better fit with the driving wheel 25 and the driven wheel 23 to ensure the power transmission efficiency; the two sets of lead screw assemblies are fixed between the bottom plate 11 and the top plate 17, and their own rotation can make the pressure plate 16 rise and fall; the driven wheel 23 is installed at the lower end of the lead screw assembly 18, and the two can rotate synchronously. The servo motor 15 can continuously transmit power to the lead screw assembly 18 to make the pressure plate 16 automatically rise and fall and generate a downward pressure during press-fitting.

[0068] Tooling module 10: The upper end plate 30 is fixed on the pressure plate 16 in the form of a positioning pin and a bolt, and the lower end plate 27 is also fixed on the tooling plate 12 in the form of a positioning pin and a bolt. Positioning with pins can ensure the consistency of the upper and lower end faces and can quickly adjust the pressing accuracy of the upper and lower end plates; the positioning block 28 and the high-precision positioning pin 34 are combined to position the six positioning rods 31. Combining with the positioning block 28 and the high-precision positioning pin 34 assembly on the upper end plate 30 can ensure the positioning accuracy of the positioning rods and can also disassemble the positioning mechanism more quickly. The high-precision positioning long strip plate 32 is installed inside the positioning rod 31, thereby increasing the positioning interface, changing the original point positioning on the side to surface positioning, thus improving the positioning accuracy and making the assembled fuel cell stack more stable during rotation; a row of holes is added to the positioning rod 31, and combined with the quick-insert positioning pin 33, it can adapt to fuel cell stacks of different numbers of sections.

[0069] The method for stacking fuel cell stacks of the present utility model:

[0070] 1. Rotate the press-fitting mechanism to an appropriate angle, pull out the front and left positioning rods, and sequentially assemble the lower end plate, current collector plate, bipolar plate, membrane electrode assembly, etc. (The materials are placed against the rear and right positioning rods).

[0071] 2. After the assembly is completed, insert the front and left positioning rods and perform preliminary press-fitting (as long as there is pressure display).

[0072] 3. Then rotate the press-fitting mechanism to the 0 position and perform pressing. When the pressure reaches the set value, the downward pressing force will automatically stop being applied.

[0073] 4. Assemble the screw and lock it; then remove the front and left rods, and use the offline trolley to carry it down.

[0074] 5. When it is necessary to disassemble and replace the membrane electrode assembly and bipolar plate on both sides, by rotating 180 degrees, the disassembly and replacement of the bipolar plate and membrane electrode assembly can be quickly achieved.

[0075] For the specific implementation solution of this embodiment, reference can be made to the relevant descriptions in the above embodiments, which will not be elaborated here.

[0076] It can be understood that the same or similar parts in the above embodiments can be referred to each other, and the content not detailed in some embodiments can be referred to the same or similar content in other embodiments.

[0077] It should be noted that in the description of the present utility model, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present utility model, unless otherwise specified, the meaning of "a plurality" refers to at least two.

[0078] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0079] The hydrogen fuel cell stack core multi-functional positive and reverse mounting stack device adopting the present utility model has the full-stroke pressing ability. The servo press cooperates with the pressure sensor to achieve closed-loop control. The pressing force curve is monitored in real time, and it can be flipped within the range of 0 to 180°. The human-machine interface is friendly. The present utility model can realize the forward and reverse assembly of the fuel cell stack core, can realize the assembly and rapid disassembly and replacement of the fuel cell stack core, and can be compatible with airtightness detection. The data of the present utility model is traceable, and the safety requirements of the pressing process are ensured through motor brakes, gratings, brakes and mechanical devices.

[0080] In this specification, the present utility model has been described with reference to its specific embodiments. However, it is obvious that various modifications and transformations can still be made without departing from the spirit and scope of the present utility model. Therefore, the specification and drawings should be regarded as illustrative rather than restrictive.

Claims

1. A multifunctional forward and reverse stacking device for a hydrogen fuel cell stack core, characterized in that: The device includes a base, a rotary press-fitting assembly, a tooling module, a motor assembly and a bearing seat. The rotary press-fitting assembly is installed on the base by cooperating with two bearing seats. The motor assembly is fixed on the base. The motor assembly drives the rotary press-fitting assembly to rotate clockwise. The rotary press-fitting assembly is supported on the base for rotation. The tooling module and the rotary press-fitting assembly are locked by pins and bolts.

2. The multifunctional forward and reverse stacking device for hydrogen fuel cell stack core according to claim 1, characterized in that: The rotary press-fitting assembly includes a bottom plate, a driving shaft, a left plate, a top plate, a right plate and a driven shaft. The driving shaft is fixed on the left plate, the driven shaft is fixed on the right plate, the rotary press-fitting assembly is fixed on the bearing seat through the driving shaft and the driven shaft, the bottom plate is located at the bottom of the rotary press-fitting assembly, and the top plate is located at the top of the rotary press-fitting assembly.

3. The multifunctional forward and reverse stacking device for hydrogen fuel cell stack core according to claim 2, characterized in that: The rotary press-fitting assembly includes a press-fitting module, which includes a servo motor, a pressure plate, two sets of screw assemblies, four guide rods, a synchronous belt, two driven wheels and a driving wheel. The servo motor is installed on the base plate through a motor mounting plate, the lower end of the servo motor is connected to the driving wheel, and power is transmitted to the two driven wheels through a synchronous belt. The two sets of screw assemblies are fixed between the base plate and the top plate, the guide rods are fixed between the base plate and the top plate, the driven wheel is installed at the lower end of the screw assembly, and the driven wheel rotates synchronously with the screw assembly.

4. The multifunctional forward and reverse stacking device for hydrogen fuel cell stack core according to claim 3, characterized in that: The rotary press-fitting assembly also includes a tensioning mechanism, which enables the synchronous belt to fit with the driving wheel and the driven wheel.

5. The multifunctional forward and reverse stacking device for hydrogen fuel cell stack core according to claim 2, characterized in that: The rotary press assembly also includes a tooling plate, which is located on the bottom plate, and the tooling module is fixed on the tooling plate of the rotary press assembly and is positioned by pins and locked by bolts.

6. The multifunctional forward and reverse stacking device for hydrogen fuel cell stack core according to claim 1, characterized in that: The tooling module comprises a lower end plate, a positioning block, an upper end plate, six positioning rods and a high-precision positioning pin. The upper end plate is fixed to the pressure plate by positioning pins and bolts, and the lower end plate is fixed to the tooling plate (12) by positioning pins and bolts. The six positioning rods are installed between the lower end plate and the upper end plate, and the positioning block and the high-precision positioning pin are installed on the lower end plate.

7. The multifunctional forward and reverse stacking device for hydrogen fuel cell stack core according to claim 6, characterized in that: The tooling module also includes a high-precision positioning strip plate, and the high-precision positioning strip plate is installed on the inner side of the positioning rod.

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