A batch proton exchange membrane continuous immersion method and immersion equipment

Abstract

The application discloses a batch proton exchange membrane continuous soaking method, which first soaks the membrane in a conveying state through water flushing, and then soaks the membrane in a conveying state through water soaking. The application also discloses a soaking equipment, which comprises a base, a liquid feeding system, an oven, a soaking chamber, a plurality of traction rollers rotatably arranged in the soaking chamber, and a pay-off roller for winding the finished membrane, the traction rollers and the pay-off roller are used for winding and conveying the finished membrane between the traction rollers and the pay-off roller, the liquid feeding system comprises a plurality of liquid outlet rollers and a plurality of soaking liquid storage tanks provided with filtering systems, the total liquid outlet of the soaking chamber is communicated with the filtering systems in the soaking liquid storage tanks, the liquid outlet of the soaking liquid storage tank is communicated with the total liquid inlet of the soaking chamber, and the liquid outlet of the soaking liquid storage tank is also respectively communicated with each liquid outlet roller. The soaking method and the equipment can realize continuous soaking of the proton exchange membrane, shorten the soaking time, and ensure sufficient soaking.

Description

Technical Field

[0001] This invention relates to the field of water electrolysis / fuel cell equipment, specifically to a batch continuous immersion method and immersion equipment for proton exchange membranes. Background Technology

[0002] A fuel cell is a power generation device that directly converts the chemical energy present in fuel and oxidant into electrical energy. The proton exchange membrane (PEM) is a crucial component of a fuel cell, and immersion is an indispensable step in its fabrication process, especially after coating and drying. Immersion in acid or alkaline solutions is necessary to form anion or proton exchange membranes. Current immersion methods are relatively simple, requiring only the membrane to be directly placed in an immersion tank. Therefore, the immersion process is an essential yet easily overlooked step in the proton exchange membrane fabrication process. In traditional immersion methods, for large-scale membrane fabrication, existing technologies typically involve winding the fabricated membrane into rolls and then unloading it from the coating equipment. After being removed, the proton exchange membranes are transported to a soaking tank for soaking. This soaking method is necessary because the proton exchange membranes are rolled up, and after being placed in the soaking tank, they often require a long soaking time (more than 24 hours) to ensure that the functional liquid can fully contact, enter, and react with the membrane. The larger the batch, the longer the soaking time (more than 100 hours). If you want to save soaking time and ensure sufficient soaking, the proton exchange membranes are usually cut into small pieces before being placed in the soaking tank. However, it is very difficult to orderly limit, organize, and store a large number of proton exchange membranes in the soaking tank, and damage is very likely to occur.

[0003] In summary, the immersion process may seem simple and easily overlooked, but with the increasingly mature development of fuel cell technology, there is an urgent need for an immersion device suitable for large-scale proton exchange membrane production, which can achieve continuous immersion, shorten immersion time, and ensure thorough immersion. Summary of the Invention

[0004] In view of the technical problems mentioned in the background section, this invention provides a method and apparatus for continuous soaking of proton exchange membranes in batches. This invention provides a method and apparatus for continuous soaking of proton exchange membranes in batches, which can achieve continuous soaking, shorten the soaking time, and ensure thorough soaking.

[0005] The technical means employed in this invention are as follows:

[0006] A method for continuous soaking of proton exchange membranes in batches includes the following steps:

[0007] S1. Put the proton exchange membrane in an expanded conveying state, and use the soaking solution to circulate and rinse the surface of the proton exchange membrane for 2-4 hours.

[0008] S2. The proton exchange membrane is completely immersed in the soaking solution. At this time, the proton exchange membrane is still in the unfolded conveying state, and this state lasts for 5-8 hours.

[0009] S4. The proton exchange membrane after completing S3 is heated and dried. At this time, the proton exchange membrane is still in the unfolded conveying state, and this state lasts for 3-6 hours.

[0010] The soaking solutions in S1 and S2 are in a state of renewal and flow.

[0011] This invention also discloses a batch proton exchange membrane continuous soaking device, including a base and a liquid feeding system. The device is characterized in that: the base is equipped with an oven and an soaking chamber connected to the liquid feeding system; multiple traction rollers are rotatably mounted inside the soaking chamber, and a single unwinding roller is rotatably mounted for the winding installation of the finished membrane; the traction rollers and unwinding roller enable the installation and conveying of a roll of finished membrane between the traction rollers and the unwinding roller; the unwinding roller is assembled and disassembled within the soaking chamber via a quick assembly / disassembly mechanism.

[0012] The soaking chamber includes a main liquid inlet and a main liquid outlet;

[0013] The liquid feeding system includes multiple liquid discharge rollers and multiple soaking liquid storage tanks with filtration systems. The multiple liquid discharge rollers are located in the soaking chamber and are positioned directly above each traction roller and unwinding roller.

[0014] The main outlet is connected to the filtration system inside the soaking solution storage tank, the outlet of the soaking solution storage tank is connected to the main inlet of the soaking chamber, and the outlet of the soaking solution storage tank is also connected to multiple outlet rollers respectively.

[0015] The soaking chamber is provided with at least one open window that communicates with the air outlet of the oven, and the open window is provided with a closed door to seal and close the open window.

[0016] The present invention is further configured such that: the liquid supply system includes a rinsing mechanism, the rinsing mechanism includes a water tank with a filtration system, and a rinsing water pipe disposed at the top of the soaking chamber and surrounding the soaking chamber, wherein the spray nozzle of the rinsing water pipe faces the inner wall of the soaking chamber.

[0017] The main outlet of the soaking chamber is also connected to the filtration system in the water tank, and the outlet of the water tank is connected to the rinsing water pipe and each outlet roller.

[0018] The present invention is further configured such that the liquid discharge rollers can slide closer to or further away from the traction roller and the unwinding roller within the soaking chamber.

[0019] The present invention is further configured such that: the liquid feeding system includes a feeding funnel communicating with the water inlet of the soaking chamber.

[0020] The invention is further configured such that the oven slides on the base toward or away from the soaking chamber.

[0021] The present invention is further configured such that one end of the liquid outlet pipe that communicates with the soaking chamber is located near the bottom.

[0022] This invention also discloses a soaking method for a soaking device, comprising the following steps:

[0023] 1) S1, the proton exchange membrane is installed on the unwinding roller. The unwinding roller is installed in the soaking chamber through a quick-release mechanism, and the other end of the proton exchange membrane is tensioned and wound onto each traction roller to realize the unfolding conveying of the finished membrane in the soaking chamber.

[0024] 2) Pour the prepared soaking solution into the soaking solution storage tank and control the soaking solution to flow out from the outlet roller to flush the surface of the proton exchange membrane. This process is maintained for 2-4 hours.

[0025] 3) Fill the soaking chamber with soaking solution through the inlet of the soaking chamber, so that the proton exchange membrane is completely immersed in the soaking solution. At this time, the proton exchange membrane is still in the unfolded conveying state, and this state lasts for 5-8 hours.

[0026] 4) The soaking liquid in the soaking chamber is completely extracted through the liquid outlet pipe. Then, the proton exchange membrane that has completed S3 is heated and dried near the soaking chamber in the oven. At this time, the proton exchange membrane is still in the unfolded conveying state, which lasts for 3-6 hours.

[0027] In steps 2) and 3), the soaking liquid falling into the soaking chamber is drawn out by the outlet pipe to the filtration system in the soaking liquid storage tank, filtered, and then stored in the soaking liquid storage tank. Finally, it enters the soaking chamber again through the inlet pipe or inlet branch pipe, so as to realize the flow of the soaking liquid in the soaking chamber and the circulation flushing of the proton exchange membrane.

[0028] The present invention is further configured such that: in S1 and step 2), the transport speed of the proton exchange membrane is 10-20 m / h; in S2 and step 3), the transport speed of the proton exchange membrane is 5-10 m / h; and in S3 and step 4), the transport speed of the proton exchange membrane is 10-20 m / h.

[0029] The present invention is further configured such that: when it is necessary to change to another soaking solution, after completing step 4), the soaking chamber (4) is rinsed by the rinsing mechanism (2-1), and the soaking chamber (4) is dried, and then another soaking solution is introduced into the soaking chamber (4), and steps 1)-4) are repeated.

[0030] Compared with the prior art, the present invention has the following advantages:

[0031] 1. The soaking method of the present invention firstly soaks the surface of the proton exchange membrane by rinsing it with a flowing soaking solution. This allows the functional liquid to fully contact, enter, and react with the proton exchange membrane, while also cleaning the surface of the proton exchange membrane and washing away small particulate impurities adhering to the surface. Then, the proton exchange membrane is completely immersed in the solution, further ensuring sufficient contact, entry, and reaction between the functional liquid and the proton exchange membrane. Furthermore, in both soaking steps, the proton exchange membrane is in a continuously unfolded conveying state. This method is suitable for large-scale proton exchange membrane soaking processes, and the unfolded conveying state provides better and more complete soaking efficiency and significantly reduces soaking time. Additionally, in both soaking steps, the soaking solution is continuously flowing and filtered and renewed. This further prevents contamination of the proton exchange membrane by small particles of impurities, and the flowing state allows the liquid to make more comprehensive contact with the proton exchange membrane under the influence of potential energy, ensuring sufficient entry and reaction.

[0032] 2. The soaking equipment designed in this invention first features a soaking chamber, followed by traction rollers and unwinding rollers for quick assembly and disassembly to limit and unfold the large batches of proton exchange membranes within the soaking chamber. Then, through the design of the liquid feeding system, multiple soaking methods can be implemented within the soaking chamber, ensuring complete soaking and saving time. In other words, this invention achieves integrated processing of the soaking chamber, conveying mechanism, liquid feeding system, and drying oven. With only one soaking chamber, a single integrated process of continuous soaking and drying of large batches of proton exchange membranes can be achieved, resulting in a better and more thorough soaking.

[0033] 3. The liquid supply system in the soaking equipment of this invention includes multiple soaking solution storage tanks that can store different functional liquids, thereby enabling soaking processes with different soaking solutions in the same soaking chamber. Furthermore, for this function, the equipment of this invention is also designed with a rinsing mechanism, and the unwinding roller equipped with the proton exchange membrane can be quickly installed and removed within the soaking chamber. That is, when the same batch of proton exchange membranes needs to be soaked in different functional liquids, the proton exchange membranes that have completed soaking in one type of soaking solution can be removed from the soaking chamber first. Then, the rinsing mechanism uses a rinsing water pipe and a liquid outlet roller connected to a water tank to completely clean and rinse the inner wall of the soaking chamber and the traction roller, ensuring the cleanliness of the soaking chamber before directly replacing it with another type of functional soaking solution. In other words, the equipment of this invention can be applied to various soaking scenarios.

[0034] 4. The present invention also includes a feeding funnel, which can increase the concentration of a certain functional soaking solution according to requirements, further expanding the soaking application scenarios of this equipment. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the overall structure of the soaking device of the present invention;

[0037] Figure 2 This is a schematic diagram of the overall structure of the soaking device of the present invention from other perspectives;

[0038] Figure 3 This is a partial structural schematic diagram of the rinsing mechanism in the soaking device of the present invention;

[0039] Figure 4 This is a schematic diagram of the connection route of the liquid loading system in the soaking device of the present invention;

[0040] In the diagram: 1. Base; 2. Liquid feeding system; 2-1. Rinsing mechanism; 2-1-1. Rinsing water pipe; 2-1-2. Water tank; 2-1-3. Spray head; 2-2. Feeding funnel; 2-3. Soaking solution storage tank; 2-4. Liquid discharge roller; 3. Drying oven; 4. Soaking chamber; 4-1. Traction roller; 4-2. Unwinding roller; 4-3. Quick assembly / disassembly mechanism; 4-4. Opening window; 4-5. Sealing door; 4-6. Main liquid outlet; 4-7. Main liquid inlet; 5. Finished film. Detailed Implementation

[0041] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0042] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0043] Example 1

[0044] An immersion device for a proton exchange membrane as described in the following embodiments includes a base 1, a liquid loading system 2, and a PLC system for intelligent control of all the following components. An oven 3 is slidably mounted within the base 1, and a drive component consisting of a motor screw assembly, etc., is installed thereon. The drive component controls the horizontal sliding movement of the oven 3, such as... Figure 1 Or as shown in Figure 2.

[0045] like Figure 1 and 2 As shown, the base 1 also includes an soaking chamber 4 connected to the liquid supply system 2. The soaking chamber 4 is installed in the base 1 via an electrical installation cabinet. It has two opposing opening windows 4-4 and a sealing window that can completely seal the opening windows 4-4. The sealing windows are slidably and liftably positioned within the soaking chamber 4. Multiple traction rollers 4-1 driven by a drive motor are rotatably mounted within the soaking chamber 4, as well as a single unwinding roller 4-2 for winding the finished film 5. The traction rollers 4-1 and unwinding roller 4-2 enable the installation and transfer of a roll of finished film 5 between them. The unwinding roller 4-2 is mounted and dismounted within the soaking chamber 4 via a quick-release mechanism 4-3. In this embodiment, the quick-release mechanism 4-3 uses an electromagnet mechanism commonly used in the field. The electromagnet is de-energized to mount and dismount the unwinding roller 4-2. It can be understood that in other embodiments, the quick-release mechanism 4-3 can be any other structure that facilitates mounting and dismounting.

[0046] The liquid supply system 2 includes a water pump, multiple liquid outlet rollers 2-4, and multiple soaking solution storage tanks 2-3 equipped with filtration systems. The liquid outlet rollers 2-4 are rollers with water outlets, respectively located within the soaking chamber 4 and directly above each traction roller 4-1 and unwinding roller 4-2. Within the soaking chamber 4, the liquid outlet rollers 2-4 are also moved up and down by electric slide rails, cylinders, and other components to move closer to or away from the ends of the traction rollers 4-1 and unwinding rollers 4-2. Figure 1 Or as shown in Figure 2.

[0047] The filtration system uses commonly used equipment in the field, such as activated carbon filters; for example... Figure 1 As shown in Figure 2, the main outlet 4-6 of the soaking chamber 4 is located near the bottom of the soaking chamber 4 and is connected to the filtration system in the soaking solution storage tank 2-3 via a connecting water pipe. This connecting water pipe is equipped with an electromagnetic switch valve and a one-way valve to prevent backflow of water from the filtration system into the soaking chamber 4. Simultaneously, the outlet of the soaking solution storage tank 2-3 is connected to the main inlet 4-7 of the soaking chamber 4 and to each outlet roller 2-4 via connecting water pipes. Electromagnetic switch valves are installed at the connecting water pipes near the outlet of the soaking solution storage tank 2-3 and near the inlets of each outlet roller 2-4, thus achieving single-line single-control and multi-line multi-control water inlet paths, as shown in Figure 2. Figure 4 As shown.

[0048] Furthermore, such as Figure 1-3 As shown, the liquid supply system 2 also includes a rinsing mechanism 2-1. The rinsing mechanism 2-1 includes a water tank 2-1-2 with a filtration system and a rinsing water pipe 2-1-1 located at the top of the soaking chamber 4 and surrounding the soaking chamber 4. The spray nozzles 2-1-3 of the rinsing water pipe 2-1-1 face the inner wall of the soaking chamber 4. Figure 3 As shown;

[0049] like Figure 4 As shown, the main outlet 4-6 of the soaking chamber 4 is connected to the filtration system in the water tank 2-1-2 via a connecting water pipe. The connecting water pipe is also equipped with an electromagnetic switch valve and a one-way valve to prevent water backflow. The outlet of the water tank 2-1-2 is connected to the rinsing water pipe 2-1-1 and each outlet roller 2-4 respectively. The outlet of the water tank 2-1-2 is also equipped with an electromagnetic switch valve to control the opening and closing of the water tank 2-1-2.

[0050] In addition, such as Figure 1 and 2 As shown in Figure 4, the liquid supply system 2 also includes a feeding funnel 2-2, which is installed on the connecting water pipe connected to the main liquid inlet 4-7 of the soaking chamber 4, and is equipped with an electromagnetic switch valve to control its opening and closing.

[0051] 1) After the proton exchange membrane is installed on the unwinding roller 4-2 through the opening window 4-4, the unwinding roller 4-2 is installed in the soaking chamber 4 through the quick installation and removal mechanism 4-3, and the other end of the proton exchange membrane is tensioned and wound onto each traction roller 4-1, so as to realize the unfolded conveying of the finished membrane 5 in the soaking chamber 4, and the sealing door 4-5 is closed.

[0052] 2) The proton exchange membrane is in a conveying state within the soaking chamber 4, with a conveying speed of 115 m / h. Prepared soaking solution is introduced into a specific soaking solution storage tank 2-3. The electromagnetic valves at each outlet roller 2-4, the outlet valve of the soaking chamber 4, and the outlet valve of the soaking solution storage tank 2-3 are all opened. The soaking solution in the storage tank 2-3 then flows into each outlet roller 2-4, and the solution is then exchanged with the proton exchange membrane at its outlet. The surface of the proton exchange membrane is fully contacted and rinsed. The soaking solution flowing from the proton exchange membrane falls to the bottom of the soaking chamber 4 and flows out through the main outlet 4-6 of the soaking chamber 4 into the filtration system of the soaking solution storage tank 2-3. After filtration by the filtration system, it is stored again in the soaking solution storage tank 2-3. This process realizes the water circulation rinsing and rinsing of the proton exchange membrane, so that the soaking solution flows out from the outlet roller 2-4, thus rinsing the surface of the proton exchange membrane. This state lasts for 3 hours.

[0053] 3) After completing step 2), the proton exchange membrane stops conveying, and the electromagnetic switch valve at the outlet roller 2-4 and the main outlet 4-6 of the soaking chamber 4 are closed. The electromagnetic switch valve connecting the raw solution storage tank and the main inlet 4-7 of the soaking chamber 4 is opened, and the soaking solution flows into the soaking chamber 4 through the main inlet 4-7, filling the soaking chamber 4 with soaking solution. After the proton exchange membrane is completely immersed in the soaking solution, the proton exchange membrane is conveyed in an unfolding manner. At this time, the conveying speed of the proton exchange membrane is 8 m / h. The temperature is relatively low to avoid damage to the proton exchange membrane under water pressure and water flow potential energy; at the same time, the main outlet 4-6 of the soaking chamber 4 is also opened. The soaking solution in the soaking chamber 4 flows out from the main outlet 4-6 to the filtration system of the soaking solution storage tank 2-3. After being filtered by the filtration system, it is stored again in the soaking solution storage tank 2-3. At the same time, it is also introduced into the soaking chamber 4 from the soaking solution storage tank 2-3. This process realizes the continuous water immersion of the proton exchange membrane. This state lasts for 6 hours.

[0054] 4) Completely extract the soaking solution from the soaking chamber 4 through the main outlet 4-6, then open the closed door 4-5, and control the oven 3 to be close to the soaking chamber 4 to heat and dry the proton exchange membrane that has completed step 3). At this time, the proton exchange membrane is still in the unfolded conveying state, and the conveying speed of the proton exchange membrane is 15m / h. This state lasts for 5 hours.

[0055] During steps 2) and 3), the concentration of the soaking solution in the soaking solution can be controlled at any time by adding material at the feeding funnel 2-2.

[0056] When a different soaking solution needs to be used, after completing step 4), close the outlet of the stock solution storage tank and the electromagnetic switch valve connected to the filtration system inside the stock solution storage tank. Then, remove the proton exchange membrane from the soaking chamber 4 after it has been fully wound up on the unwinding roller 4-2. Next, open the water tank 2-1-2 to allow water to flush the inner wall of the soaking chamber 4 through the flushing pipe 2-1-1 and to flush the traction roller 4-1 and other components through the outlet roller 2-4. The flushed water flows into the filtration system of the water tank 2-1-2 through the main outlet 4-6 of the soaking chamber 4, and after filtration, it is stored back in the water tank 2-1-2. After drying the soaking chamber 4 in the oven 3, the proton exchange membrane is then soaked in the soaking solution from another stock solution storage tank using the same method as in steps 1)-4).

[0057] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. In the above embodiments of the present invention, the descriptions of each embodiment have their own emphasis; parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments. It should be understood that the disclosed technical content in the several embodiments provided in this application can be implemented in other ways.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A batch proton exchange membrane continuous immersion device, comprising a base (1) and a liquid feeding system (2), characterized in that: The base (1) is equipped with an oven (3) and an soaking chamber (4) connected to the liquid supply system (2). Multiple traction rollers (4-1) are rotatably arranged in the soaking chamber (4), and a roll unwinding roller (4-2) is rotatably arranged for the finished film (5) to be wound and installed. The traction rollers (4-1) and the roll unwinding roller (4-2) realize the installation and transmission of a roll of finished film (5) between the traction rollers (4-1) and the roll unwinding roller (4-2). The roll unwinding roller (4-2) is installed and disassembled in the soaking chamber (4) by a quick installation and disassembly mechanism (4-3). The soaking chamber (4) includes a main liquid inlet (4-7) and a main liquid outlet (4-6); The liquid feeding system (2) includes multiple liquid discharge rollers (2-4) and multiple soaking liquid storage tanks (2-3) with filtration systems. The multiple liquid discharge rollers (2-4) are located in the soaking chamber (4) and are positioned directly above each traction roller (4-1) and unwinding roller (4-2). The main outlet (4-6) is connected to the filtration system in the soaking solution storage tank (2-3), the outlet of the soaking solution storage tank (2-3) is connected to the main inlet (4-7) of the soaking chamber (4), and the outlet of the soaking solution storage tank (2-3) is also connected to multiple outlet rollers (2-4) respectively. The soaking chamber (4) is provided with at least one open window (4-4) that communicates with the air outlet of the oven (3), and a closed door (4-5) is provided at the open window (4-4) to seal and close the open window (4-4).

2. The soaking device according to claim 1, characterized in that: The liquid supply system (2) includes a rinsing mechanism (2-1), which includes a water tank (2-1-2) with a filtration system and a rinsing water pipe (2-1-1) located at the top of the soaking chamber (4) and surrounding the soaking chamber (4). The spray nozzle (2-1-3) of the rinsing water pipe (2-1-1) faces the inner wall of the soaking chamber (4). The main outlet (4-6) of the soaking chamber (4) is also connected to the filtration system in the water tank (2-1-2), and the outlet of the water tank (2-1-2) is connected to the rinsing water pipe (2-1-1) and each outlet roller (2-4).

3. The soaking device according to claim 1, characterized in that: The liquid discharge rollers (2-4) can slide closer to or further away from the traction rollers (4-1) and unwinding rollers (4-2) within the soaking chamber (4).

4. The soaking device according to claim 1, characterized in that: The liquid feeding system (2) includes a feeding funnel (2-2) that communicates with the water inlet of the soaking chamber (4).

5. The soaking device according to claim 1, characterized in that: The oven (3) slides on the base (1) toward or away from the soaking chamber (4).

6. The soaking device according to claim 1, characterized in that: The end of the outlet pipe that connects to the soaking chamber (4) is located near the bottom.

7. A soaking method using the soaking equipment according to any one of claims 1-6, characterized in that, Includes the following steps: 1) S1, the proton exchange membrane is installed on the unwinding roller (4-2). The unwinding roller (4-2) is installed in the soaking chamber (4) through the quick assembly and disassembly mechanism (4-3), and the other end of the proton exchange membrane is tensioned and wound onto each traction roller (4-1) to realize the unfolding and conveying of the finished membrane (5) in the soaking chamber (4); 2) Pour the prepared soaking solution into the soaking solution storage tank (2-3) and control the soaking solution to flow out from the liquid outlet roller (2-4) to achieve the flushing of the proton exchange membrane surface. This state is maintained for 2-4 hours. 3) Fill the soaking chamber (4) with soaking solution through the inlet of the soaking chamber (4) so ​​that the proton exchange membrane is completely immersed in the soaking solution. At this time, the proton exchange membrane is still in the unfolded conveying state, which lasts for 5-8 hours. 4) The soaking liquid in the soaking chamber (4) is completely extracted through the liquid outlet pipe. Then, the oven (3) is placed close to the soaking chamber (4) to heat and dry the proton exchange membrane that has completed S3. At this time, the proton exchange membrane is still in the unfolded conveying state, which lasts for 3-6 hours. In steps 2) and 3), the soaking liquid falling into the soaking chamber (4) is drawn out by the outlet pipe to the filtration system in the soaking liquid storage tank (2-3), filtered, and then stored in the soaking liquid storage tank (2-3). Finally, it enters the soaking chamber (4) again through the inlet pipe or the inlet branch pipe to realize the flow of the soaking liquid in the soaking chamber (4) and the circulation flushing of the proton exchange membrane.

8. The soaking method according to claim 7, characterized in that: In steps S1 and 2), the transport speed of the proton exchange membrane is 10-20 m / h; in steps S2 and 3), the transport speed of the proton exchange membrane is 5-10 m / h; in steps S3 and 4), the transport speed of the proton exchange membrane is 10-20 m / h.

9. The soaking method according to claim 7, characterized in that: When it is necessary to change to another soaking solution, after completing step 4), the soaking chamber (4) is rinsed by the rinsing mechanism (2-1), and the soaking chamber (4) is dried. Then another soaking solution is introduced into the soaking chamber (4), and steps 1)-4 are repeated.

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