Integrated gluing process of fuel cell module based on partition plate with single-side gluing

Abstract

The invention relates to the technical field of fuel cells, in particular to a fuel cell module integrated gluing process based on a single-side glued partition plate, which comprises the following steps: step S100, forming a water seal groove in the upper surface of a graphite anode plate; step S200, carrying out surface cleaning treatment on the graphite cathode plate and the graphite anode plate with the water seal tank, and carrying out drying treatment; and S300, filling the water seal tank of the graphite anode plate with a solid hot melt adhesive, and attaching the graphite cathode plate to the upper surface of the graphite anode plate to form the bipolar plate. According to the invention, through the manufacturing process of pre-coating the hot melt adhesive layer on the partition plate, the cumbersome and complicated traditional dispensing step is avoided, the production process is greatly simplified, and meanwhile, the positive / negative partition plate and the membrane electrode form the cell module in a hot-press gluing manner, so that the air tightness between the partition plate and the membrane electrode is ensured, and the production efficiency is improved. And the precision control and the product percent of pass in the large-scale production process are obviously improved.

Description

Technical Field

[0001] The invention relates to the technical field of fuel cells, and in particular to an integrated gluing process for fuel cell modules based on a separator plate coated with glue on one side. Background Art

[0002] As the core device of hydrogen fuel cell system, the efficient operation and performance improvement of fuel cell stack depends on the precise design and manufacturing of two key components: bipolar plate and membrane electrode. Among them, bipolar plate is composed of cathode separator and anode separator, which not only supports the whole electrochemical reaction process in structure, but also occupies a dominant position from the perspective of weight and volume. The membrane electrode is the real place where the electrochemical reaction occurs inside the fuel cell. Its performance directly determines the power density, operating efficiency and service life of the fuel cell.

[0003] Normally, a single membrane electrode can generate a voltage of about 0.7V under standard conditions. In order to obtain a higher voltage, multiple bipolar plates are generally designed to be connected in series, that is, multiple single cells are stacked in an orderly and continuous manner to form a fuel cell stack. The existing conventional stack assembly technology is to alternately stack bipolar plates and membrane electrodes layer by layer. After stacking to the required number, mechanical pressure is used to tighten them, and fasteners are used to ensure the overall stability of the stack structure. In this traditional process, the entire stack assembly process does not involve any chemical reactions, and only relies on physical methods to achieve sealing and firm connections between components.

[0004] At present, the domestic fuel cell assembly technology adopts the above stacking technology, such as the patents with publication numbers CN207233866U, CN114388862A, CN114243075A, and CN113991158A. At the same time, the sealing process between the bipolar plate and the membrane electrode in the above patents is generally achieved by precision dispensing technology. In the actual dispensing process, especially in the sealing area where the dispensing line forms a closed loop, due to the intersection or overlap between the glue lines, it is easy to cause uneven thickness of the local seal. Considering that high-power stacks are generally composed of hundreds or even thousands of bipolar plates and membrane electrodes stacked tightly and orderly, any slight uneven sealing may lead to problems such as increased local resistance, gas leakage or coolant leakage, thereby seriously affecting the overall performance and life of the stack. Summary of the invention

[0005] The present invention provides a fuel cell module integrated gluing process based on a separator plate coated with glue on one side, so as to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: The integrated gluing process of fuel cell modules based on a separator plate with single-sided gluing includes the following steps: Step S100, opening a water seal groove on the upper surface of the graphite anode plate; Step S200, cleaning and drying the surface of the graphite cathode plate and the graphite anode plate after the water seal groove is opened; Step S300, filling the water seal groove of the graphite anode plate with solid hot melt adhesive, and attaching the graphite cathode plate to the upper surface of the graphite anode plate to form a bipolar plate; Step S400, the graphite anode plate, the graphite cathode plate and the bipolar plate are respectively attached to one side of the membrane electrode frame area, and a layer of hot melt adhesive is evenly covered, and then a drying process is performed; Step S500, disposing at least one membrane electrode between the bottommost graphite cathode plate and the topmost graphite anode plate, and attaching a bipolar plate between every two adjacent membrane electrodes; Step S600, setting the time, pressure and temperature for the hot pressing equipment so that after the hot pressing operation is set, the graphite cathode plate, membrane electrode and graphite anode plate or the graphite cathode plate, membrane electrode, bipolar plate and graphite anode plate are integrated and glued together.

[0007] Preferably, the surface cleaning process of the graphite anode plate and the graphite cathode plate in step S200 is water washing to initially remove impurities, ultrasonic deep cleaning and plasma technology fine cleaning.

[0008] Preferably, in step S200, the graphite anode plate and the graphite cathode plate are dried by natural air drying or by using a drying device.

[0009] Preferably, the hot melt adhesive layer in step S400 is covered by screen printing, spraying, dispensing or laminating a hot melt adhesive sheet.

[0010] Preferably, the type of the hot melt adhesive layer in step S400 is vinyl acetate copolymer, polypropylene, polyurethane, pressure-sensitive adhesive or rubber-based hot melt adhesive.

[0011] Preferably, the hot melt adhesive layer is dried in step S400 by heating and drying at 60°C.

[0012] Preferably, in step S600, the gluing time of the battery module is 5-20 min, the gluing temperature is 100-190° C., and the gluing pressure is 30 KN.

[0013] Preferably, in step S600, the solid hot melt adhesive forms a sealing ring in the water seal groove after a hot pressing process.

[0014] A fuel cell module is prepared by using the above-mentioned fuel cell module integrated gluing process based on a separator plate with single-sided glue coating.

[0015] A fuel cell stack is assembled using the fuel cell modules.

[0016] By adopting the above technical solution, the beneficial effects achieved by the invention are: In the present invention, the manufacturing process of pre-coating a hot melt adhesive layer on the separator plate avoids the tediousness and complexity of the traditional dispensing steps, greatly simplifying the production process. At the same time, the anode / cathode separator plate and the membrane electrode are formed into a battery cell module by hot pressing and gluing, which ensures the airtightness between the separator plate and the membrane electrode, and significantly improves the precision control and product qualification rate in the large-scale production process.

[0017] In the present invention, a seal connected to the next battery cell module is prefabricated with solid hot melt adhesive on the anode or cathode of the battery cell module, so that the solid hot melt adhesive undergoes chemical cross-linking reaction and physical bonding effect under the action of heat and pressure to form a large-area, high-density connection interface, thereby ensuring efficient sealing between the partition plate and the membrane electrode, avoiding the cumulative error and sealing failure risk caused by the stacking of pieces one by one in the traditional assembly process, thereby effectively improving the overall performance and life of the battery stack.

[0018] In summary, the present invention prepares battery cell modules of single cells or multiple batteries through the integrated hot melt adhesive forming method, which successfully simplifies the traditional battery stack assembly process, not only reduces the process complexity, but also improves the production speed and adaptability, enhances the overall performance and life of the battery stack, reduces the requirements for mold and equipment specifications, and thus saves process time and labor costs; and the technical route of integrated packaging greatly reduces the technical threshold of battery stack assembly, making the production process more flexible and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of stacking the graphite anode plate, membrane electrode and graphite cathode plate of the present invention; Figure 2 It is a schematic diagram of stacking the graphite anode plate, membrane electrode, bipolar plate and graphite cathode plate of the present invention; Figure 3 It is a schematic diagram of the integrated gluing process of the single membrane electrode and the graphite separator of the present invention; Figure 4 It is a schematic diagram of the integrated gluing process of the multi-membrane electrode and the graphite separator of the present invention.

[0020] In the figure: 1. Graphite anode plate; 2. Graphite cathode plate; 3. Membrane electrode; 4. Hot melt adhesive layer; 5. Solid hot melt adhesive; 6. Bipolar plate. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] like Figure 1-4 As shown, the present invention provides a fuel cell module integrated gluing process based on a separator plate with single-sided glue coating, comprising the following steps: Step S100, opening a water seal groove on the upper surface of the graphite anode plate 1; Step S200, cleaning and drying the graphite cathode plate 2 and the graphite anode plate 1 after the water seal groove is opened; Specifically, the surface cleaning process of the graphite anode plate 1 and the graphite cathode plate 2 is water washing to initially remove impurities, ultrasonic deep cleaning and plasma technology fine cleaning, and the drying treatment of the graphite anode plate 1 and the graphite cathode plate 2 is natural air drying or drying treatment using drying equipment; Wherein, the graphite anode plate 1 and the graphite cathode plate 2 undergo a series of surface cleaning treatment stages, including but not limited to water washing to initially remove impurities, ultrasonic deep cleaning to peel off tiny particles, and fine cleaning using plasma technology; In actual operation, the specific cleaning procedure will be flexibly set according to the characteristics and cleaning requirements of the graphite anode plate 1 and the graphite cathode plate 2. The specific operation method is well known and applied by those skilled in the art, and will not be described in detail herein. Step S300, filling the water seal groove of the graphite anode plate 1 with solid hot melt adhesive 5, and attaching the graphite cathode plate 2 to the upper surface of the graphite anode plate 1 to form a bipolar plate 6; Specifically, the solid hot melt adhesive 5 forms a sealing ring in the water seal groove after the hot pressing process; Step S400, the graphite anode plate 1, the graphite cathode plate 2 and the bipolar plate 6 are respectively attached to one side of the frame area of ​​the membrane electrode 3, and a layer of hot melt adhesive layer 4 with excellent performance is evenly covered, and then a drying process is performed; Specifically, the hot melt adhesive layer 4 is covered by screen printing, spraying, dispensing or laminating a hot melt adhesive sheet; Further, the type of the hot melt adhesive layer 4 is vinyl acetate copolymer, polypropylene, polyurethane, pressure sensitive adhesive or rubber-based hot melt adhesive; Furthermore, the hot melt adhesive layer 4 is dried by heating and drying at 60°C; Step S500, laminating at least one membrane electrode 3 between the bottommost graphite cathode plate 2 and the topmost graphite anode plate 1, and laminating a bipolar plate 6 between every two adjacent membrane electrodes 3; Step S600, setting the time, pressure and temperature of the hot pressing equipment so that after the hot pressing operation is set, the graphite cathode plate 2, the membrane electrode 3 and the graphite anode plate 1 or the graphite cathode plate 2, the membrane electrode 3, the bipolar plate 6 and the graphite anode plate 1 are integrated and glued.

[0024] Specifically, the gluing time is 5-20 min, the gluing temperature is 100-190° C., and the gluing pressure is 30 KN.

[0025] In summary, a hot melt adhesive layer 4 is pre-coated on the graphite anode plate 1 and the graphite cathode plate 2, and the hot melt adhesive layer 4 is tightly combined with the frame material of the membrane electrode 3 through a hot pressing molding process, so that the hot melt adhesive layer 4 undergoes a chemical cross-linking reaction and a physical bonding effect under the action of heat and pressure, forming a large-area, high-density connection interface, thereby ensuring efficient sealing between the partition and the membrane electrode 3, and then cooperating with the mechanical pressure applied later to construct a double protection mechanism, thereby enhancing the overall sealing performance of the fuel cell module, effectively preventing gas leakage, and improving the stability and reliability of the battery unit.

[0026] As a further example, types of hot melt adhesives include, but are not limited to, vinyl acetate copolymers, polypropylene, polyurethane, pressure sensitive adhesives, or rubber-based hot melt adhesive products.

[0027] As a further feature, the graphite anode plate 1 and the graphite cathode plate 2 are mainly made of graphite material and a flexible graphite composite material formed by a hot pressing process. The unique porous structure inside the material can effectively and tightly combine with the adhesive material during the hot pressing forming stage, and the non-contact surfaces of the graphite anode plate 1 and the graphite cathode plate 2 and the membrane electrode 3 are both provided with a water flow field (in the later stacking process, the single cells after hot pressing are arranged in sequence on the stacking machine mold so that the cathode / anode separators of adjacent single cells are in contact, thereby forming a cooling water channel). The core purpose of the cooling water channel design is to regulate the temperature of the fuel cell during operation to maintain it within an appropriate range, and this technology and structure are well known to those skilled in the art and are used in this field, and will not be elaborated in detail herein.

[0028] As a further feature, a fuel cell module is prepared by using the above-mentioned fuel cell module integrated gluing process based on the separator plate with single-sided glue coating.

[0029] As a further aspect, a fuel cell stack is assembled using the above-mentioned fuel cell modules.

[0030] Furthermore, since the assembled battery stack is carried out through an integrated battery cell module, the battery stack obtained by this method is later repairable by removing the broken battery cell module and replacing it with a new one. Moreover, since the modules are in contact with each other through cooling water channels, the membrane electrode 3 will not be damaged during the replacement of the battery cell module. At the same time, since the requirements for mold and equipment specifications are reduced, the production cost can be reduced and the market competitiveness of the product can be improved.

[0031] It should be emphasized that when implementing this solution, it is necessary to first select a part of the separators with qualified production quality as graphite anode plates 1, and select a part of the separators as graphite anode plates 2, and the graphite anode plates 1 and the graphite cathode plates 2 are mainly made of graphite material and a flexible graphite composite material formed by a hot pressing process, and the processing technology of the graphite anode plates 1 and the graphite anode plates 2 is a publicly known technology to those skilled in the art, and will not be elaborated in this article. Embodiment 1

[0032] Combination Figure 3 As shown, the integrated gluing process of the fuel cell module based on the separator plate with single-sided glue coating includes the following steps: Step S100, opening a water seal groove on the upper surface of the graphite anode plate 1; Step S200, cleaning and drying the graphite cathode plate 2 and the graphite anode plate 1 after the water seal groove is opened; Step S300, filling the water seal groove of the graphite anode plate 1 with solid hot melt adhesive 5; Step S400, the graphite anode plate 1 and the graphite cathode plate 2 are respectively attached to one side of the frame area of ​​the membrane electrode 3, and a layer of hot melt adhesive layer 4 with good performance is evenly covered, and then a drying process is performed; Step S500, attaching a single membrane electrode 3 between the lower graphite cathode plate 2 and the upper graphite anode plate 1; Step S600, setting the time, pressure and temperature for the hot pressing equipment so that after the hot pressing operation is set, the graphite cathode plate 2, the membrane electrode 3 and the graphite anode plate 1 are integrated and glued together.

[0033] Specifically, a single membrane electrode 3 is attached between the lower graphite cathode plate 2 and the upper graphite anode plate 1, so that a single battery cell module is formed after hot pressing; and in order to ensure the high sealing of the connection parts between the single battery cell modules, a seal will be designed and manufactured inside the water seal groove of the graphite anode plate 1 or the graphite cathode plate 2 (this solution chooses to operate inside the water seal groove of the graphite anode plate 1).

[0034] In the specific operation, precisely cut solid hot melt adhesive 5 material will be filled into the water seal groove to prepare the sealing ring. Then, in the hot pressing forming process stage, the solid hot melt adhesive 5 will form a circle of tightly fitting and seamless sealing structure with the edge of the graphite anode plate 1 after being heated and melted. This sealing structure has excellent waterproof performance and long-term durability, and can maintain a stable sealing effect even under extreme operating conditions.

[0035] Furthermore, in the present embodiment, after the single battery cell module is integrated and glued, the graphite anode plate 1 is glued and connected to the membrane electrode 3 through the hot melt adhesive layer 4 covered on one side, and the graphite cathode plate 2 is glued and connected to the membrane electrode 3 through the hot melt adhesive layer 4 covered on one side, so that the graphite anode plate 1, the membrane electrode 3 and the graphite cathode plate 2 can be integrated and glued together in sequence, so that the single graphite anode plate 1, the membrane electrode 3 and the graphite cathode plate 2 are integrated and glued through hot pressing to form a single battery cell module. Embodiment 2

[0036] Combination Figure 4 As shown, the integrated gluing process of the fuel cell module based on the separator plate with single-sided glue coating includes the following steps: Step S100, opening a water seal groove on the upper surface of the graphite anode plate 1; Step S200, cleaning and drying the graphite cathode plate 2 and the graphite anode plate 1 after the water seal groove is opened; Step S300, filling the water seal groove of the graphite anode plate 1 with solid hot melt adhesive 5, and attaching the graphite cathode plate 2 to the upper surface of the graphite anode plate 1 to form a bipolar plate 6; Step S400, the graphite anode plate 1, the graphite cathode plate 2 and the bipolar plate 6 are respectively attached to one side of the frame area of ​​the membrane electrode 3, and a layer of hot melt adhesive layer 4 with excellent performance is evenly covered, and then a drying process is performed; Step S500, laminating at least two membrane electrodes 3 between the lower graphite cathode plate 2 and the upper graphite anode plate 1, and laminating the bipolar plate 6 between every two adjacent membrane electrodes 3; Step S600, setting the time, pressure and temperature for the hot pressing equipment so that after the hot pressing operation is set, the graphite cathode plate 2, the membrane electrode 3, the bipolar plate 6 and the graphite anode plate 1 are integrated and glued together.

[0037] Specifically, a circle of sealing elements is set in the water seal groove area of ​​the first partition connecting the battery module with the previous battery module (this scheme chooses to operate inside the water seal groove of the graphite anode plate 1). The specific operation is to place pre-cut solid hot melt adhesive 5 material in the water seal groove; thereby, when the solid hot melt adhesive 5 on the graphite anode plate 1 forms a sealing ring after hot pressing, it will fit tightly to the cathode partition of the next battery module connected to it, thereby realizing effective series connection between the battery modules; at the same time, the sealing ring formed by the hot melt adhesive in the water seal groove after hot pressing will provide a tight sealing effect on this contact interface to ensure that the cooling water will not leak.

[0038] It should be emphasized that in this embodiment, both contact surfaces of the bipolar plate 6 need to be pre-coated with a uniform hot melt adhesive layer 4, so that the hot melt adhesive layer can not only firmly bond the bipolar plate 6 to the single membrane electrode 3, but also simultaneously connect multiple independent single battery units into a complete multi-cell module, and this multi-cell module generally contains 2 to 20 single cells.

[0039] Furthermore, in this embodiment, after the multiple battery cell modules are integrated and glued together, the graphite anode plate 1 is glued and connected to the membrane electrode 3 through the hot melt adhesive layer 4 covered on one side, the graphite cathode plate 2 is glued and connected to the membrane electrode 3 through the hot melt adhesive layer 4 covered on one side, and the bipolar plate 6 is glued and connected to the membrane electrode 3 through the hot melt adhesive layer 4 covered on both sides, so that the graphite anode plate 1, the membrane electrode 3, the bipolar plate 6 and the graphite cathode plate 2 can be integrated and glued together in a stacking order.

[0040] In combination with Example 1 and Example 2, the hot melt adhesive layer 4 uses a rubber-based hot melt adhesive and is covered by screen printing, spraying or dispensing. After covering, the hot melt adhesive layer 4 is dried by heating and drying at 60°C; and the gluing time of the battery module in the hot pressing process is 5-20 min, the gluing temperature is 100-190°C, and the gluing pressure is 30KN.

[0041] When assembling a fuel cell stack according to the cell modules of Example 1 and Example 2, the integrated glued single-cell modules and multi-cell modules need to undergo strict airtightness testing, and only qualified modules that pass the test can enter the stack assembly stage. This rigorous quality control method eliminates potential defective products, greatly improves the yield rate of the stack assembly, meets the urgent needs of large-scale production for high quality and high yield rate, and provides strong support for achieving efficient mass production and market promotion.

[0042] In addition, the stack assembly process does not need to rely on high-precision mechanical positioning arms, and can be completed using a simpler horizontal stacking method. Therefore, this unique process design significantly reduces the complexity of stack assembly and improves the overall qualification rate of the product, making it very suitable for the actual needs of large-scale stack production. The above-mentioned simple horizontal stacking method is a well-known public technology and has been well known and applied by technicians in this field. This article will not elaborate on this.

[0043] In summary, this solution forms a single-cell module or a multi-cell module by hot-pressing and gluing the graphite anode plate 1 and the graphite cathode plate 2 with the membrane electrode 3, thereby ensuring the airtightness between the partition plate and the membrane electrode 3, significantly improving the precision control and product qualification rate in the large-scale production process, and prefabricating a seal connected to the next single-cell module or multi-cell module with solid hot melt adhesive 5 on the anode or cathode of the single-cell module or the multi-cell module, so as to facilitate the connection and sealing between modules during the later assembly of the battery stack, and avoid the cumulative error and sealing failure risk caused by the stacking of each piece in the traditional assembly process; therefore, the design of this solution can not only simplify the preparation process, but also improve the assembly accuracy, reduce the requirements for mold and equipment specifications, thereby saving process time and labor costs; and the technical route of integrated packaging greatly reduces the technical threshold of battery stack assembly, making the production process more flexible and efficient.

[0044] Furthermore, the present solution abandons the cumbersome and complicated sealing ring production process on the bipolar plate 6 and the membrane electrode 3 in the traditional graphite stack assembly, and instead adopts an integrated hot melt adhesive packaging technology, which not only greatly simplifies the production process, significantly saves time and resource investment, but also reduces the process difficulty, thereby improving the overall production efficiency and quality control standards; and the hot melt adhesive layer 4 is covered by screen printing, spraying or dispensing, and with the help of a simple and efficient hot pressing molding method, the hot melt adhesive layer 4 can undergo necessary chemical reactions, and a stable and large-area contact strong connection is formed between the anode and cathode separators and the membrane electrode 3 in a chemically bonded manner, so that the various components inside the stack are tightly and stably bonded together, ensuring the high sealing performance requirements of the stack during long-term operation, improving the operating reliability and extending the service life of the fuel cell, and enhancing the market competitiveness of the product.

[0045] Therefore, the manufacturing process of pre-coating the hot melt adhesive layer 4 on the partition plate avoids the tediousness and complexity of the traditional dispensing steps, greatly simplifies the production process, and is different from the traditional fuel cell assembly process. It not only reduces the process complexity, but also improves the production speed and adaptability, and significantly improves work efficiency. In short, the integrated packaging technology based on graphite anode and cathode separators and membrane electrode 3 has demonstrated its excellence in many aspects and greatly simplified the overall manufacturing process of the fuel cell stack.

[0046] It should be noted that the dispensing method is adopted in the embodiment of this scheme mainly because hot melt adhesive has fluidity characteristics when heated. Therefore, although traditional dispensing technology is adopted, the accuracy requirements for overlapping parts during dispensing are relatively loose, and the operation is simple and easy.

[0047] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A fuel cell module integrated gluing process based on a separator with single-sided glue coating, characterized in that: The following steps are involved: Step S100, opening a water seal groove on the upper surface of the graphite anode plate (1); Step S200, cleaning and drying the surface of the graphite cathode plate (2) and the graphite anode plate (1) after the water seal groove is opened; Step S300, filling the water seal groove of the graphite anode plate (1) with solid hot melt adhesive (5), and attaching the graphite cathode plate (2) to the upper surface of the graphite anode plate (1) to form a bipolar plate (6); Step S400: Attach the graphite anode plate (1), the graphite cathode plate (2), and the bipolar plate (6) to one side of the frame area of ​​the membrane electrode (3), uniformly cover them with a hot melt adhesive layer (4), and then perform a drying process; Step S500: arranging at least one membrane electrode (3) between the bottommost graphite cathode plate (2) and the topmost graphite anode plate (1), and laminating a bipolar plate (6) between every two adjacent membrane electrodes (3); Step S600: setting the time, pressure and temperature for the hot pressing equipment so that after the hot pressing operation is performed, the graphite cathode plate (2), the membrane electrode (3) and the graphite anode plate (1) or the graphite cathode plate (2), the membrane electrode (3), the bipolar plate (6) and the graphite anode plate (1) are integrated and bonded.

2. The fuel cell module integrated gluing process based on a separator plate with single-sided glue coating according to claim 1, characterized in that: The surface cleaning process of the graphite anode plate (1) and the graphite cathode plate (2) in step S200 is water washing to initially remove impurities, ultrasonic deep cleaning and plasma technology fine cleaning.

3. The fuel cell module integrated gluing process based on a separator with single-sided glue coating according to claim 1, characterized in that: In step S200, the graphite anode plate (1) and the graphite cathode plate (2) are dried by natural air drying or by using a drying device.

4. The fuel cell module integrated gluing process based on a separator plate coated with glue on one side according to claim 1, characterized in that: The covering method of the hot melt adhesive layer (4) in step S400 is screen printing, spraying, dispensing or laminating a hot melt adhesive sheet.

5. The fuel cell module integrated gluing process based on a separator plate with single-sided glue coating according to claim 1, characterized in that: The type of the hot melt adhesive layer (4) in step S400 is vinyl acetate copolymer, polypropylene, polyurethane, pressure sensitive adhesive or rubber-based hot melt adhesive.

6. The fuel cell module integrated gluing process based on a separator plate coated with glue on one side according to claim 1, characterized in that: The drying method of the hot melt adhesive layer (4) in step S400 is to perform a heating drying process at 60°C.

7. The fuel cell module integrated gluing process based on a separator plate with single-sided glue coating according to claim 1, characterized in that: In step S600 , the gluing time of the battery cell module is 5-20 min, the gluing temperature is 100-190° C., and the gluing pressure is 30 KN.

8. The fuel cell module integrated gluing process based on a separator plate coated with glue on one side according to claim 1, characterized in that: In step S600, the solid hot melt adhesive (5) forms a sealing ring in the water seal groove after the hot pressing process.

9. A fuel cell module, characterized in that: The fuel cell module is prepared by the integrated gluing process of the fuel cell module based on the separator plate with single-sided glue coating as described in any one of claims 1 to 8.

10. A fuel cell stack, characterized in that: The fuel cell module according to claim 9 is assembled.

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