Preparation tool for single fuel cell

Abstract

The utility model provides a preparation tool of a fuel cell monocell, which comprises a transplanting assembly, a transplanting linear guide rail assembly, a first station and a second station, the first station and the second station are arranged above the transplanting linear guide rail assembly at an interval, and the transplanting assembly is provided with a platform capable of placing a monocell structure. The single cell structure comprises an anode hot compress product, a membrane electrode and a cathode hot compress product which are stacked in sequence, the transplanting assembly is movably arranged on the transplanting linear guide rail assembly, the transplanting assembly moves along the transplanting linear guide rail assembly to transplant the single cell structure to a first station, and the first station has vacuumizing and hot pressing functions; the single battery structure is vacuumized on the first station and then hot-pressed in a vacuum environment, after hot pressing is completed, the transplanting assembly moves the single battery structure to the second station, and the second station has a cold pressing function. And the single battery can be quickly cooled after hot pressing in vacuum, so that the production efficiency and the product quality are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fuel cell technical field, concretely relates to a kind of preparation tool of fuel cell single cell. BACKGROUND

[0002] Fuel cell vehicle is an important technical route of new energy vehicle industry in our country, and is one of the three horses of new energy vehicle. Hydrogen fuel cell single cell is the important component of hydrogen battery whole stack, and the promotion and application of hydrogen energy help to respond to climate change, and play an important role in the process of inhibiting global warming, and hydrogen energy industry is being accelerated at home and abroad. Single cell as the core component in fuel cell, the performance and consistency of its promotion, directly affect the promotion of stack performance.

[0003] Current single cell preparation process generally exists the problem of low yield, poor product consistency, not only cause the waste of overall pole to be serious, the consistency of stack is low, and the failure rate is higher, and current process means cannot meet the production demand of large quantities of single cell preparation. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of prior art, the utility model provides a kind of preparation method and preparation tool for fuel cell single cell for improving production efficiency, sealing quality and consistency.

[0005] To solve the above technical problems, the first aspect of the utility model provides a kind of preparation method of fuel cell single cell, and its main features are as follows:

[0006] (1) pre-assemble anode side single plate and anode side hot melt adhesive film, form anode hot compress product, pre-assemble cathode side single plate and cathode side hot melt adhesive film, form cathode hot compress product;

[0007] (2) the anode hot compress product, membrane electrode, cathode hot compress product are sequentially stacked and placed on transplanting assembly, and the stacked single cell structure is moved to first station by the transplanting assembly, the first station has vacuumizing and hot pressing function, in the first station, vacuumizing is carried out first, and then hot pressing under vacuum environment;

[0008] (3) after hot pressing, the single cell structure after hot pressing is moved to second station by the transplanting assembly, and the second station has cold pressing function, and cold pressing is carried out in the second station.

[0009] The second aspect of this utility model provides a tooling for preparing a fuel cell single cell, characterized in that it includes a transfer assembly, a transfer linear guide assembly, a first station, and a second station. The first station and the second station are spaced apart and arranged above the transfer linear guide assembly. The transfer assembly has a platform for placing a single cell structure. The single cell structure includes anode heat packs, membrane electrode assemblies, and cathode heat packs stacked sequentially. The transfer assembly is movably mounted on the transfer linear guide assembly. The transfer assembly moves along the transfer linear guide assembly to transfer the single cell structure to the first station. The first station has vacuuming and hot-pressing functions. At the first station, the single cell structure is first vacuumed and then hot-pressed in a vacuum environment. After hot-pressing, the transfer assembly moves the single cell structure to the second station. The second station has a cold-pressing function. At the second station, the single cell structure is cold-pressed.

[0010] Preferably, the first station includes an upper vacuum assembly, and the transfer assembly serves as a lower vacuum assembly at the first station. A seal is provided between the bottom surface of the upper vacuum assembly and the top surface of the lower vacuum assembly. The top surface of the lower vacuum assembly has an area for placing the single-cell structure. The upper vacuum assembly includes a housing with a vacuum interface. A thermopressing mechanism is provided in the inner cavity of the housing. The thermopressing mechanism includes a support plate, a connecting column, and a heating plate. The support plate is used to connect to the drive mechanism. The support plate is connected to the heating plate through the connecting column. A heating element and a temperature probe are provided inside the heating plate. The upper vacuum assembly is sealed to the lower vacuum assembly downwards and a vacuum is created to form a vacuum environment. After the vacuum environment is created, the single-cell structure is thermopressed by pressing down the heating plate.

[0011] Preferably, a connecting plate is provided on the heating plate, and the connecting column is connected to the heating plate through the connecting plate.

[0012] Preferably, the second station includes a cold pressing mechanism, which includes a driving component, a lower pressing plate assembly, and a cooling component. The lower pressing plate assembly includes a guide plate and a lower pressing block. The driving component is connected to the lower pressing block through the guide plate. The guide plate is disposed on a guide post. The driving component drives the guide plate to move along the guide post, thereby moving the lower pressing block and cold pressing the single-cell structure through the lower pressing block.

[0013] Preferably, the drive component is a cylinder assembly.

[0014] The tooling for preparing fuel cell single cells of this invention enables the single cell to be rapidly cooled after hot pressing in a vacuum. The rapid cooling is continuous without affecting the hot pressing effect, thereby improving production efficiency and product quality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the single battery involved in this utility model.

[0016] Figure 2 This is a schematic diagram of the overall structure of the preparation tooling of this utility model.

[0017] Figure 3 This is a schematic diagram of the transfer component and the transfer linear guide component in the preparation tooling of this utility model.

[0018] Figure 4 This is a schematic diagram of the upper and lower vacuum components in the preparation tooling of this utility model.

[0019] Figure 5 This is a schematic diagram of the heating mechanism in the preparation tooling of this utility model.

[0020] Figure 6 This is a schematic diagram of the cold pressing mechanism in the preparation tooling of this utility model. Detailed Implementation

[0021] To make the technical problem solved by this utility model clearer, the present utility model will be further described below with reference to embodiments and accompanying drawings. The specific embodiments described herein are for illustrative purposes only and are not intended to limit the present utility model.

[0022] like Figure 1 The diagram shown is a structural schematic of a single cell involved in this utility model. Specifically, the single cell includes an anode-side plate 1, an anode-side hot melt adhesive film 2, a membrane electrode 3, a cathode-side hot melt adhesive film 4, and a cathode-side plate 5.

[0023] For the single cell involved in this utility model, this utility model provides a specific preparation method to improve the preparation consistency of the fuel cell single cell and improve the overall consistency and performance of the fuel cell stack. The method includes the following steps:

[0024] (1) Pre-assemble the anode side single plate and the anode side hot melt adhesive film to form an anode heat treatment product; pre-assemble the cathode side single plate and the cathode side hot melt adhesive film to form a cathode heat treatment product.

[0025] (2) The anode heat pack, membrane electrode and cathode heat pack are stacked in sequence and placed on the transfer assembly. The stacked single cell structure is moved to the first station through the transfer assembly. The first station has vacuuming and hot pressing functions. At the first station, vacuuming is performed first, and then hot pressing is performed in a vacuum environment.

[0026] (3) After hot pressing is completed, the vacuum is broken first, and the hot-pressed single-cell structure is moved to the second station through the transfer component. The second station has a cold pressing function, and cold pressing is performed at the second station.

[0027] like Figures 2 to 6 The image shows an embodiment of the fabrication fixture for a single fuel cell provided by this utility model. Wherein, as... Figure 2 As shown, the preparation fixture includes a base 6, a transfer assembly 7, a transfer linear guide assembly 9, a first station 11 and a second station 10. The first station 11 and the second station 10 are arranged at intervals above the transfer linear guide assembly 9. The first station and the second station are independent of each other. The transfer assembly 7 has a platform for placing a single cell structure 8. The single cell structure 8 includes an anode heat pack, a membrane electrode, and a cathode heat pack stacked in sequence.

[0028] like Figure 3 As shown, the transplanting component 7 is movably mounted on the transplanting linear guide rail assembly 9, and can be driven by the motor 12 to achieve linear movement of the transplanting component 7 on the transplanting linear guide rail assembly 9.

[0029] The transplanting component 7 moves along the transplanting linear guide component 9 to transplant the single-cell structure 8 to the first station 11. The first station 11 has vacuuming and hot pressing functions. At the first station 11, the single-cell structure 8 is first vacuumed and then hot-pressed in a vacuum environment. After hot pressing is completed, the transplanting component 7 moves the single-cell structure 8 to the second station 10. The second station 10 has a cold pressing function. At the second station 10, the single-cell structure 8 is cold-pressed.

[0030] like Figure 4 As shown, the first station 11 includes an upper vacuum assembly 14, and the transfer assembly serves as a lower vacuum assembly 16 at the first station. A sealing element is provided between the bottom surface of the upper vacuum assembly 14 and the top surface of the lower vacuum assembly 16. The top surface of the lower vacuum assembly 16 has an area for placing the single battery structure. The upper vacuum assembly 14 includes a housing, and the housing is provided with a vacuum interface 13.

[0031] A thermopressing mechanism is provided in the inner cavity of the housing, such as... Figure 5As shown, the hot pressing mechanism includes a support plate 16, a connecting column 17, and a heating plate 19. The support plate 16 is used to connect the driving mechanism, and the support plate 16 is connected to the heating plate 19 through the connecting column 17. A heating element 20 and a temperature probe 21 are disposed inside the heating plate 19. The heating element 20 can be a heating rod, and the temperature probe 21 can be a thermocouple.

[0032] The upper vacuum assembly 14 is sealed and evacuated with the lower vacuum assembly 16 to form a vacuum environment. After the vacuum environment is formed, the heating plate 19 is pressed down to perform hot pressing on the single cell structure 15 to be hot-pressed.

[0033] like Figure 5 As shown, a connecting plate 18 is provided on the heating plate 19, and the connecting column 17 is connected to the heating plate 19 through the connecting plate 18.

[0034] Therefore, the preparation process and method of this utility model can achieve hot pressing in a vacuum environment, exhibiting high stability in a vacuum environment. This allows for rapid and stable hot pressing preparation of single cells, improving the sealing quality and consistency of the prepared cells. After hot pressing, the vacuum is first broken, then the heating plate is lifted, and the single cell structure is moved to the second working position via a transfer assembly.

[0035] like Figure 6 As shown, the second station 10 includes a cold pressing mechanism, which comprises a drive assembly 22, a lower pressure plate assembly, and a cooling assembly 26. The lower pressure plate assembly includes a guide plate 23 and a lower pressure block 24. The drive assembly 22 is connected to the lower pressure block 24 via the guide plate 23. The guide plate 23 is mounted on a guide post 25. The drive assembly 22 drives the guide plate 23 to move along the guide post 25, simultaneously moving the lower pressure block 24. The lower pressure block 24 performs cold pressing on the single-cell structure, and the cooling assembly rapidly cools it down. The drive assembly 22 can be a cylinder assembly. The cooling assembly 26 can be connected to an interface on the lower pressure block 24 via a cooling water pipe to achieve cold pressing. Specifically, the cooling assembly 26 uses circulating water cooling to reduce the contact temperature of the cold pressing module, thereby increasing the temperature difference between the product and the cooling module. The lower pressure block 24 can be made of a thermally conductive metal with a higher thermal conductivity.

[0036] Therefore, in the preparation tooling of this utility model, hot pressing and cooling are completed at different workstations, and rapid cooling is possible after vacuum hot pressing, thereby improving production efficiency.

[0037] The present invention discloses a method for preparing a single cell for a fuel cell and its preparation tooling, which enables the single cell to be rapidly cooled after hot pressing in a vacuum. The rapid cooling is continuous without affecting the hot pressing effect, thereby improving production efficiency and product quality.

[0038] The above descriptions are specific embodiments of this utility model and do not constitute a limitation on the scope of protection of this utility model. Any modifications and variations made to the technical concept of this utility model should be included within the scope of protection of this utility model.

Claims

1. A tooling for fabricating a single fuel cell, characterized in that, The device includes a transplanting assembly, a transplanting linear guide assembly, a first workstation, and a second workstation. The first and second workstations are spaced apart and positioned above the transplanting linear guide assembly. The transplanting assembly has a platform for placing a single-cell structure. The single-cell structure includes anode heat packs, membrane electrodes, and cathode heat packs stacked sequentially. The transplanting assembly is movably mounted on the transplanting linear guide assembly. The transplanting assembly moves along the transplanting linear guide assembly to transplant the single-cell structure to the first workstation. The first workstation has vacuuming and hot-pressing functions. At the first workstation, the single-cell structure is first vacuumed and then hot-pressed in a vacuum environment. After hot-pressing, the transplanting assembly moves the single-cell structure to the second workstation. The second workstation has a cold-pressing function. At the second workstation, the single-cell structure is cold-pressed.

2. The fabrication fixture for a single fuel cell according to claim 1, characterized in that, The first workstation includes an upper vacuum assembly, and the transfer assembly serves as a lower vacuum assembly at the first workstation. A seal is provided between the bottom surface of the upper vacuum assembly and the top surface of the lower vacuum assembly. The top surface of the lower vacuum assembly has an area for placing the single-cell structure. The upper vacuum assembly includes a housing with a vacuum interface. A thermopressing mechanism is provided in the inner cavity of the housing. The thermopressing mechanism includes a support plate, a connecting column, and a heating plate. The support plate is used to connect to the drive mechanism. The support plate is connected to the heating plate through the connecting column. A heating element and a temperature probe are provided inside the heating plate. The upper vacuum assembly is sealed to the lower vacuum assembly downwards and a vacuum is created to form a vacuum environment. After the vacuum environment is formed, the single-cell structure is thermopressed by pressing down the heating plate.

3. The fabrication fixture for a single fuel cell according to claim 2, characterized in that, A connecting plate is provided on the heating plate, and the connecting column is connected to the heating plate through the connecting plate.

4. The fabrication fixture for a single fuel cell according to claim 1, characterized in that, The second station includes a cold pressing mechanism, which includes a driving component, a lower pressing plate assembly, and a cooling component. The lower pressing plate assembly includes a guide plate and a lower pressing block. The driving component is connected to the lower pressing block through the guide plate. The guide plate is mounted on a guide post. The driving component drives the guide plate to move along the guide post, thereby moving the lower pressing block and cold pressing the single-cell structure.

5. The fabrication fixture for a single fuel cell according to claim 4, characterized in that, The drive component is a cylinder assembly.

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