Novel fuel cell CCM coating line drying device

Abstract

The utility model discloses a novel fuel cell CCM coating line drying device, and belongs to the technical field of fuel cell production. The device comprises a drying module, the drying module is arranged at the top of a conveying guide roller, an air outlet is formed in the bottom of the drying module, an air outlet pipeline is arranged in the drying module, and the air outlet is communicated with the air outlet pipeline; an infrared lamp set is further arranged at the bottom of the drying module. And a heating medium is introduced into the conveying guide roller. According to the CCM drying device, the mode that hot air drying, infrared lamp set radiation and guide roller heating are coordinated is used for replacing a traditional mode that only hot air is introduced for drying, and the uniformity and efficiency of CCM drying are improved; the air volume and the working number of the infrared lamp groups can be flexibly adjusted by controlling a control valve of the air outlet pipeline and a control switch of the infrared lamp groups according to different coating thicknesses, so that the high efficiency of the drying process is ensured, and the drying time is shortened; meanwhile, energy waste is avoided, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cell production, in particular to a novel fuel cell CCM coating and drying device. Background Art

[0002] The membrane electrode (MEA) is a core component of hydrogen fuel cell systems, providing microchannels for multiphase mass transfer and electrochemical reaction sites. The MEA typically consists of a proton exchange membrane, a catalyst layer, and a gas diffusion layer. The performance of the MEA directly determines the performance and service life of the fuel cell.

[0003] Membrane electrode technology has gone through several stages of development, including GDE-type membrane electrode, CCM membrane electrode and ordered membrane electrode. Among them, the CCM membrane electrode preparation process has been widely adopted and has become the current mainstream commercial preparation method. The CCM membrane electrode preparation process is to form a catalyst-coated membrane by directly coating the catalyst on the proton exchange membrane, thereby improving the utilization rate of the catalyst and reducing the cost of the fuel cell. In the preparation process of CCM, the coating and drying steps are particularly critical and directly affect the performance and life of the membrane electrode. Patent CN116550575B discloses a lithium battery coating and drying device and a drying method thereof. The method sets a guide triangle on the inner side of the air outlet channel, and by adjusting the guide triangle, the purpose of guiding the blown air flow and adjusting the air flow blowing speed is achieved to meet the drying requirements of the battery electrode. However, this solution only relies on regulating hot air for heating, which may have the problem of low efficiency.

[0004] Currently, the hot air drying method mentioned above is commonly used for drying CCM during production. However, due to the varying amounts of catalyst applied to the proton exchange membrane, or the coating thickness, depending on processing requirements, simply drying with hot air can result in excessively long heating times, low drying efficiency, and potentially poor coating quality. Utility Model Content

[0005] The purpose of the utility model is to provide a novel fuel cell CCM coating line drying device, which adopts multi-stage temperature control and adjustable air path design to achieve efficient, accurate and rapid drying of CCM.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A new fuel cell CCM coating line drying device includes a drying module, which is arranged on the top of the conveying guide roller, an air outlet is provided at the bottom of the drying module, an air outlet duct is provided inside the drying module, and the air outlet is connected to an external fan through the air outlet duct; an infrared lamp group is also provided at the bottom of the drying module.

[0008] There are multiple air outlets and air outlet ducts, the number of air outlets and air outlet ducts is equal, and each air outlet is connected to an air outlet duct;

[0009] Preferably, the distances between adjacent air outlets are the same.

[0010] The bottom of the drying module is configured as an arc-shaped bottom surface, and the air outlet and the infrared lamp group are arranged along the arc-shaped bottom surface.

[0011] Preferably, each of the air outlet ducts is provided with a control valve.

[0012] Preferably, the shape of the air outlet is circular or rectangular with rounded corners.

[0013] Preferably, the number of the air outlets is set to be more than three, the number of the infrared lamp groups is set to be more than two, and at least one infrared lamp group is set between two air outlets.

[0014] Preferably, each infrared lamp group is connected to a control switch.

[0015] Preferably, a heating medium is introduced into the conveying guide roller.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The utility model adopts the collaborative working mode of hot air drying and infrared lamp radiation to replace the traditional method of drying by only introducing hot air, thereby improving the uniformity and efficiency of CCM drying and optimizing the entire CCM drying process.

[0018] 2. The utility model can also flexibly adjust the air volume and the number of infrared lamp groups working according to the different coating thicknesses by controlling the control valve of the air outlet duct and the control switch of the infrared lamp group, thereby ensuring the high efficiency of the drying process and shortening the drying time; at the same time, it avoids energy waste and reduces production costs.

[0019] 3. The utility model also introduces a heating medium into the interior of the conveying guide roller, and further enhances the heating effect through the synergy of hot air drying, infrared lamp group radiation and guide roller heating.

[0020] 4. The CCM coating line drying device provided by the present invention has a simple design and is easy to operate, which is beneficial to improving the production efficiency of the CCM coating production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of a novel fuel cell CCM coating and drying device in Example 1 of the present utility model;

[0022] Figure 2 yes Figure 1 a bottom view of the drying apparatus shown;

[0023] Figure 3 This is another structural schematic diagram of the novel fuel cell CCM coating and drying device in Example 1 of the present utility model;

[0024] Figure 4 This is another structural schematic diagram of the novel fuel cell CCM coating and drying device in Example 1 of the present utility model;

[0025] Figure 5 This is a structural diagram of a novel fuel cell CCM coating and drying device in Example 2 of the present utility model;

[0026] Figure 6 This is another structural schematic diagram of the novel fuel cell CCM coating and drying device in Example 2 of the present utility model;

[0027] Figure 7 This is another structural schematic diagram of the novel fuel cell CCM coating and drying device in Example 2 of the present utility model;

[0028] Figure 8 This is another structural schematic diagram of the novel fuel cell CCM coating and drying device in Example 2 of the present utility model;

[0029] Figure 9 This is a structural diagram of a novel fuel cell CCM coating and drying device in Example 3 of the present utility model;

[0030] Figure 10 This is another structural schematic diagram of the new fuel cell CCM coating line drying device in Example 3 of the present utility model.

[0031] In the figure: 1-air outlet duct, 2-control valve, 3-air outlet, 4-infrared lamp, 5-guide roller. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and beneficial effects of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0033] Example 1

[0034] like Figure 1 and Figure 2 As shown, this embodiment 1 describes a new fuel cell CCM coating line drying device, which includes a drying module, the drying module is arranged on the top of the conveying guide roller 5, an air outlet 3 is provided at the bottom of the drying module, an air outlet duct 1 is provided inside the drying module, and the air outlet 3 is connected to the external fan through the air outlet duct 1; an infrared lamp group 4 is also provided at the bottom of the drying module.

[0035] There are three air outlet ducts 1 , each of which is provided with a control valve 2 . The control valve 2 can adjust the air volume of the air outlet 3 to meet the drying requirements of different CCMs.

[0036] The air outlet 3 is in the shape of a circle or a rounded rectangle, and the spacing between adjacent air outlets 3 is equal. The air outlet 3 and the infrared lamp group 4 are arranged in an arc shape at the bottom of the drying module.

[0037] There are two infrared lamp groups 4, each of which is connected to a control switch. The on and off of the infrared lamp group 4 can be flexibly controlled according to the different temperatures required by the process; the power of the infrared lamp group 4 is adjusted by a power regulator, and the maximum power is 5KW.

[0038] The number of the air outlet ducts 1 can be increased according to the requirements of the CCM preparation process, such as Figure 3 and Figure 4 shown.

[0039] Example 2

[0040] This embodiment 2 also describes a new fuel cell CCM coating and drying device. Except for the following technical features that are different from the above embodiment 1, the remaining technical features of this device can refer to the above embodiment 1.

[0041] like Figure 5 As shown, in this embodiment, there are two infrared lamp groups 4 between every two air outlets 3. Increasing the number of infrared lamp groups 4 can enhance infrared radiation, thereby increasing the drying temperature and ensuring uniformity and efficiency of CCM drying.

[0042] Of course, the number of infrared lamp groups 4 is not limited to the above two, and can be reasonably increased according to demand, such as Figures 6 to 8 shown.

[0043] Example 3

[0044] This embodiment 3 also describes a new fuel cell CCM coating and drying device. Except for the following technical features that are different from the above embodiment 1, the remaining technical features of this device can refer to the above embodiment 1.

[0045] like Figure 9 or Figure 10 As shown, in this embodiment, there are five air outlet ducts 1, only two of which are equipped with control valves 2. Reducing the number of control valves 2 not only allows for adjustment of the air volume and airflow distribution of the drying device, but also saves costs. Therefore, the number of control valves 2 can be reduced accordingly based on the actual drying requirements of the CCM.

[0046] Example 4

[0047] This embodiment 4 also describes a new fuel cell CCM coating and drying device. Except for the following technical features that are different from the above embodiment 1, the remaining technical features of this device can refer to the above embodiment 1.

[0048] like Figure 1 As shown, in this embodiment, the guide roller 5 is set on the production line. The CCM coated with the slurry is then conveyed to the guide roller 5. The guide roller 5 is connected to the circulation pump. The circulation pump conveys the thermal oil to the thermal oil cavity inside the guide roller 5. The thermal oil conducts heat through the surface of the guide roller 5 to achieve uniform heating and drying of the CCM. At the same time, the air outlet duct 1 is opened to allow the air outlet 3 to release the hot air flow stably and evenly. By precisely adjusting the control valve 2, the air volume can be flexibly adjusted to meet the drying requirements of different CCMs. In addition, the infrared lamp group 4 is started synchronously, and infrared heat radiation is used to further accelerate the drying process of the CCM. The guide roller heating, hot air drying and infrared lamp radiation work together to ensure the uniformity and efficiency of the drying of the CCM and optimize the entire drying process.

[0049] For those skilled in the art, it is understandable that the embodiments of the present invention can be subjected to various changes, modifications, substitutions and variations without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new fuel cell CCM coating line drying device, characterized by: It includes a drying module, which is arranged on the top of the conveying guide roller, an air outlet is arranged at the bottom of the drying module, an air outlet duct is arranged inside the drying module, and the air outlet is connected to the air outlet duct; an infrared lamp group is also arranged at the bottom of the drying module.

2. A novel fuel cell CCM coating and drying device according to claim 1, characterized in that: There are multiple air outlets and air outlet ducts, the number of air outlets and air outlet ducts is equal, each air outlet is connected to an air outlet duct; the distances between adjacent air outlets are the same.

3. The novel fuel cell CCM coating and drying device according to claim 1 is characterized in that: The bottom of the drying module is configured as an arc-shaped bottom surface, and the air outlet and the infrared lamp group are arranged along the arc-shaped bottom surface.

4. A novel fuel cell CCM coating and drying device according to claim 2, characterized in that: Each of the air outlet ducts is provided with a control valve.

5. The novel fuel cell CCM coating and drying device according to claim 2 is characterized in that: The shape of the air outlet is circular or rectangular with rounded corners.

6. The novel fuel cell CCM coating and drying device according to claim 3 is characterized in that: The number of the air outlets is set to be more than three, the number of the infrared lamp groups is set to be more than two, and at least one infrared lamp group is set between two air outlets.

7. The novel fuel cell CCM coating and drying device according to claim 1 is characterized in that: Each infrared lamp group is connected to a control switch.

8. The novel fuel cell CCM coating and drying device according to claim 1 is characterized in that: A heating medium is introduced into the conveying guide roller.

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