CN220202055U - A kind of stamped titanium metal bipolar plate for proton exchange membrane electrolysis of water - Google Patents
A kind of stamped titanium metal bipolar plate for proton exchange membrane electrolysis of water Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 239000010936 titanium Substances 0.000 title claims abstract description 30
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 29
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000012528 membrane Substances 0.000 title claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 18
- 239000002184 metal Substances 0.000 title claims abstract description 18
- 238000005868 electrolysis reaction Methods 0.000 title claims description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims description 25
- 239000001257 hydrogen Substances 0.000 claims description 11
- 229910052739 hydrogen Inorganic materials 0.000 claims description 11
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 229920002379 silicone rubber Polymers 0.000 claims description 4
- 239000004945 silicone rubber Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000003153 chemical reaction reagent Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003486 chemical etching Methods 0.000 description 2
- 239000000112 cooling gas Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- -1 fluoride ions Chemical class 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 150000003608 titanium Chemical class 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
本实用新型涉及一种冲压型质子交换膜电解水用钛金属双极板，其包括阳极流场板、隔板以及阴极流场板，所述阳极流场板与阴极流场板相对设置于隔板的两侧，所述阳极流场板和阴极流场板的中部区域均设有冲压成型的反应流场，所述阳极流场板的反应流场包括进水口、第一出口以及阳极流道，所述阳极流道的一端连通所述进水口，另一端连通至所述第一出口；所述阴极流场板的反应流场包括第二出口以及阴极流道，所述阴极流道一端连通至第二出口；通过阳极流场板、隔板以及阴极流场板叠加在一起构成了双极板结构，采用冲压法制作的钛金属双极板，可节约大量钛材料，有效降低成本，并避免了化学试剂的使用所引起的环境污染问题。
The utility model relates to a stamped proton exchange membrane titanium metal bipolar plate for electrolyzing water, which includes an anode flow field plate, a separator and a cathode flow field plate. The anode flow field plate and the cathode flow field plate are arranged opposite to each other on the separator. On both sides of the plate, the central area of the anode flow field plate and the cathode flow field plate is provided with a stamped reaction flow field. The reaction flow field of the anode flow field plate includes a water inlet, a first outlet and an anode flow channel. , one end of the anode flow channel is connected to the water inlet, and the other end is connected to the first outlet; the reaction flow field of the cathode flow field plate includes a second outlet and a cathode flow channel, and one end of the cathode flow channel is connected to to the second exit; the anode flow field plate, separator and cathode flow field plate are stacked together to form a bipolar plate structure. The titanium metal bipolar plate made by the stamping method can save a large amount of titanium material, effectively reduce costs, and Environmental pollution problems caused by the use of chemical reagents are avoided.
Description
技术领域Technical field
本实用新型涉及燃料电池技术领域，具体涉及一种冲压型质子交换膜电解水用钛金属双极板。The utility model relates to the technical field of fuel cells, and specifically relates to a stamped proton exchange membrane titanium metal bipolar plate for electrolyzing water.
背景技术Background technique
新能源作为一种可再生能源，在能源可持续发展和能源革命中具有举足轻重的地位。但是相比传统火电、水电和核电，新能源发电具有分散性、间歇性和不稳定性，考虑到电网稳定性和安全性等因素，其并不适合直接并网。“电-氢”转换作为一种重要的能量储存方式，可以将不稳定的可再生能源储存为氢气，既可在需要时通过燃料电池或者掺氢内燃机发电，也可用于化工生产和交通领域，是一种极具发展潜力的可再生能源消纳方式。目前质子交换膜（PEM）电解水制氢是一种清洁、高效、可再生的氢能生产技术，具有更高的电解效率和氢气纯度，可以大幅降低制氢成本，更重要的是具备宽范围快速动态响应能力，可完美适配新能源发电的间歇性和波动性。As a kind of renewable energy, new energy plays an important role in sustainable energy development and energy revolution. However, compared with traditional thermal power, hydropower and nuclear power, new energy power generation is decentralized, intermittent and unstable. Taking into account factors such as grid stability and security, it is not suitable for direct grid connection. As an important energy storage method, "electricity-to-hydrogen" conversion can store unstable renewable energy as hydrogen, which can be used to generate electricity through fuel cells or hydrogen-doped internal combustion engines when needed, and can also be used in chemical production and transportation fields. It is a renewable energy consumption method with great development potential. At present, proton exchange membrane (PEM) water electrolysis for hydrogen production is a clean, efficient and renewable hydrogen energy production technology. It has higher electrolysis efficiency and hydrogen purity, can significantly reduce the cost of hydrogen production, and more importantly, has a wide range of Fast dynamic response capability can perfectly adapt to the intermittency and volatility of new energy power generation.
传统PEM电解水电堆的结构主要由质子交换膜、催化层、双极板和密封圈组成，虽然膜电极是电解槽的核心，但双极板也是其重要组件之一，并占据了电解槽较大成本，传统双极板通常由高纯度的钛金属（Ti）材料制成，相比燃料电池中常用的双极板材质，如石墨和不锈钢，钛金属的成本仍旧偏高。针对钛金属制成的双极板，目前常见的加工工艺共有两种：其一是切割加工法，利用机械切割工具，将钛板进行切削、打孔等加工；其二是化学刻蚀法，采用含氟离子的刻蚀液对流道进行刻蚀处理。但上述两种方法均属于减材制造，存在大量的钛浪费，尤其是化学刻蚀方法还会造成严重的环境污染，因此对于未来PEM电解槽的商业化十分不利。The structure of a traditional PEM water electrolysis stack mainly consists of a proton exchange membrane, a catalytic layer, a bipolar plate and a sealing ring. Although the membrane electrode is the core of the electrolyzer, the bipolar plate is also one of its important components and occupies a relatively large area of the electrolyzer. High cost. Traditional bipolar plates are usually made of high-purity titanium (Ti) material. Compared with bipolar plate materials commonly used in fuel cells, such as graphite and stainless steel, the cost of titanium metal is still high. There are currently two common processing techniques for bipolar plates made of titanium: one is the cutting method, which uses mechanical cutting tools to cut and drill the titanium plate; the other is the chemical etching method. The flow channel is etched using an etching solution containing fluoride ions. However, both of the above methods are subtractive manufacturing, which results in a large amount of titanium waste. In particular, the chemical etching method also causes serious environmental pollution, which is very detrimental to the commercialization of PEM electrolyzers in the future.
因此基于上述现有技术的不足，如何设计出一种低成本、无污染加工成型的双极板，成为本技术领域亟待解决的课题。Therefore, based on the above-mentioned shortcomings of the existing technology, how to design a low-cost, pollution-free processing and molding of a bipolar plate has become an urgent issue in this technical field.
实用新型内容Utility model content
为克服上述现有技术的不足，本实用新型提供了一种冲压型质子交换膜电解水用钛金属双极板，具体采用如下技术方案：In order to overcome the above-mentioned shortcomings of the prior art, the present utility model provides a stamped proton exchange membrane titanium metal bipolar plate for water electrolysis, specifically adopting the following technical solutions:
一种冲压型质子交换膜电解水用钛金属双极板，其包括阳极流场板、隔板以及阴极流场板，所述阳极流场板与阴极流场板相对设置于隔板的两侧，所述阳极流场板和阴极流场板的中部区域均设有冲压成型的反应流场，所述阳极流场板的反应流场包括进水口、用于氧气和水流出的第一出口以及阳极流道，所述阳极流道的一端连通所述进水口，另一端连通至所述第一出口；所述阴极流场板的反应流场包括用于氢气和水流出的第二出口以及阴极流道，所述阴极流道一端连通至第二出口。A titanium metal bipolar plate for stamped proton exchange membrane electrolysis of water, which includes an anode flow field plate, a separator and a cathode flow field plate. The anode flow field plate and the cathode flow field plate are arranged oppositely on both sides of the separator. , the middle areas of the anode flow field plate and the cathode flow field plate are provided with stamped reaction flow fields, and the reaction flow field of the anode flow field plate includes a water inlet, a first outlet for oxygen and water outflow, and An anode flow channel, one end of the anode flow channel is connected to the water inlet, and the other end is connected to the first outlet; the reaction flow field of the cathode flow field plate includes a second outlet for the outflow of hydrogen and water and a cathode Flow channel, one end of the cathode flow channel is connected to the second outlet.
优选为：所述阳极流场板和阴极流场板中反应流场的流道均采用蛇形双流道结构。Preferably, the flow channels of the reaction flow field in the anode flow field plate and the cathode flow field plate adopt a serpentine double flow channel structure.
优选为：所述阳极流场板和阴极流场板的反应流场的周边设有边框密封槽，所述边框密封槽内设有硅橡胶材质的密封结构。Preferably, a frame sealing groove is provided around the reaction flow field of the anode flow field plate and the cathode flow field plate, and a silicone rubber sealing structure is provided in the frame sealing groove.
优选为：所述阳极流场板中阳极流道的开口背向隔板设置；所述阴极流场板中阴极流道的开口背向隔板设置。Preferably, the opening of the anode flow channel in the anode flow field plate is arranged facing away from the partition plate; the opening of the cathode flow channel in the cathode flow field plate is arranged facing away from the partition plate.
优选为：所述阳极流场板和阴极流场板均采用0.2mm厚的钛板。Preferably, both the anode flow field plate and the cathode flow field plate are made of titanium plates with a thickness of 0.2 mm.
优选为：所述阳极流道和阴极流道均包括交叉排列的背脊和沟槽，所述沟槽位于流道的中间位置，所述沟槽的两侧位置分别设有所述背脊。Preferably, both the anode flow channel and the cathode flow channel include cross-arranged back ridges and grooves, the groove is located in the middle of the flow channel, and the back ridges are respectively provided on both sides of the groove.
优选为：所述阳极流场板中对应边框密封槽的深度与阳极流道的沟槽深度相同；所述阴极流场板中对应边框密封槽的深度与阴极流道的沟槽深度相同。Preferably, the depth of the corresponding frame sealing groove in the anode flow field plate is the same as the groove depth of the anode flow channel; the depth of the corresponding frame sealing groove in the cathode flow field plate is the same as the groove depth of the cathode flow channel.
优选为：所述阳极流场板与隔板之间的间隙位置设有第一冷却流道；所述阴极流场板与隔板之间的间隙位置设有第二冷却流道。Preferably, a first cooling flow channel is provided in the gap between the anode flow field plate and the separator; and a second cooling flow channel is provided in the gap between the cathode flow field plate and the separator.
有益效果beneficial effects
本实用新型的技术方案获得了下列有益效果：The technical solution of the present utility model achieves the following beneficial effects:
本实用新型采用三块冲压成型的金属单板，即阳极流场板、隔板以及阴极流场板叠加在一起构成了双极板结构，并分别在边框密封槽中放入密封材料实现双极板结构密封，通过外力压紧使各单板之间紧密贴合在一起，并且采用冲压法制作的钛金属双极板，节约大量钛材料，有效降低成本，并避免了化学试剂的使用所引起的环境污染问题。This utility model uses three stamped metal single plates, namely the anode flow field plate, the separator plate and the cathode flow field plate, which are stacked together to form a bipolar plate structure, and sealing materials are placed in the frame sealing grooves to achieve bipolarization. The plate structure is sealed, and the single plates are tightly fitted together through external pressure. The titanium bipolar plate is made by stamping method, which saves a lot of titanium material, effectively reduces costs, and avoids the risks caused by the use of chemical reagents. environmental pollution problems.
附图说明Description of drawings
图1为本实施例中冲压型质子交换膜电解水用钛金属双极板的装配结构示意图。Figure 1 is a schematic diagram of the assembly structure of a titanium bipolar plate for water electrolysis using a stamped proton exchange membrane in this embodiment.
图2为本实施例中冲压型质子交换膜电解水用钛金属双极板的正面结构示意图。Figure 2 is a schematic front structural view of a titanium metal bipolar plate for stamped proton exchange membrane water electrolysis in this embodiment.
图3为图2中A-A位置的剖视结构示意图。Figure 3 is a schematic cross-sectional structural diagram at position A-A in Figure 2.
图4为本实施例中阳极流场板的整体结构示意图。Figure 4 is a schematic diagram of the overall structure of the anode flow field plate in this embodiment.
图5为本实施例中阴极流场板的整体结构示意图。Figure 5 is a schematic diagram of the overall structure of the cathode flow field plate in this embodiment.
实施方式Implementation
下面结合附图对本实用新型作进一步描述。以下实施例仅用于更加清楚地说明本实用新型的技术方案，而不能以此来限制本实用新型的保护范围。应该指出，以下详细说明都是示例性的，旨在对本申请提供进一步的说明。The utility model will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, but cannot be used to limit the scope of protection of the present invention. It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application.
除非另有指明，本文使用的所有技术和科学术语具有与本申请所属技术领域的普通技术人员通常理解的相同含义。需要注意的是，这里所使用的术语仅是为了描述具体实施方式，而非意图限制根据本申请的示例性实施方式。如在这里所使用的，除非上下文另外明确指出，否则单数形式也意图包括复数形式，此外，还应当理解的是，当在本说明书中使用术语“包含”和/或“包括”时，其指明存在特征、步骤、操作、器件、组件和/或它们的组合。Unless otherwise defined, all technical and scientific terms used herein have the same meanings commonly understood by one of ordinary skill in the art to which this application belongs. It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular forms are also intended to include the plural forms unless the context clearly indicates otherwise. Furthermore, it will be understood that when the terms "comprises" and/or "includes" are used in this specification, they indicate There are features, steps, operations, means, components and/or combinations thereof.
参照附图1-3所示，本实施例的一种冲压型质子交换膜电解水用钛金属双极板，包括阳极流场板2、隔板1以及阴极流场板3，其中所述阳极流场板2与阴极流场板3相对设置于隔板1的两侧，并且本实施例中所述阳极流场板2和阴极流场板3的中部区域均设有冲压成型的反应流场。Referring to Figures 1-3, a titanium metal bipolar plate for stamped proton exchange membrane water electrolysis in this embodiment includes an anode flow field plate 2, a separator 1 and a cathode flow field plate 3, wherein the anode The flow field plate 2 and the cathode flow field plate 3 are arranged opposite to each other on both sides of the separator 1, and in this embodiment, the middle regions of the anode flow field plate 2 and the cathode flow field plate 3 are provided with stamped reaction flow fields. .
其中所述阳极流场板2采用0.2mm厚的钛板制成，如图4所示，所述阳极流场板2的反应流场包括进水口4、第一出口5以及阳极流道，所述第一出口5用于氧气和水流出，所述阳极流道的一端连通所述进水口4，另一端连通至所述第一出口5；所述阳极流场板2的反应流场的流道采用蛇形双流道结构，结合图3所示，所述阳极流道包括交叉排列的阳极背脊202和阳极沟槽201，所述阳极沟槽201位于阳极流道的中间位置，所述阳极沟槽201的两侧位置分别设有所述阳极背脊202，所述阳极流道的阳极沟槽201可作为气体和液体通道，以供水体流动以及为氧气提供流动通道，而所述阳极背脊202则可将相邻阳极沟槽201进行分隔并支撑流道结构。其中所述阳极流场板2中阳极流道的开口背向隔板1设置，而所述阳极流场板2与隔板1之间的间隙位置设有第一冷却流道203，通过向第一冷却流道203通入冷却气体，可对阳极流场板2进行降温冷却。The anode flow field plate 2 is made of a 0.2mm thick titanium plate. As shown in Figure 4, the reaction flow field of the anode flow field plate 2 includes a water inlet 4, a first outlet 5 and an anode flow channel. The first outlet 5 is used for the outflow of oxygen and water. One end of the anode flow channel is connected to the water inlet 4, and the other end is connected to the first outlet 5; the flow of the reaction flow field of the anode flow field plate 2 The channel adopts a serpentine double flow channel structure. As shown in Figure 3, the anode flow channel includes a cross-arranged anode back ridge 202 and an anode groove 201. The anode groove 201 is located in the middle of the anode flow channel. The anode groove The anode ridges 202 are respectively provided on both sides of the groove 201. The anode groove 201 of the anode flow channel can be used as a gas and liquid channel to flow water and provide a flow channel for oxygen, and the anode ridge 202 Adjacent anode trenches 201 may separate and support flow channel structures. The opening of the anode flow channel in the anode flow field plate 2 is set away from the separator 1, and a first cooling flow channel 203 is provided in the gap between the anode flow field plate 2 and the separator 1. A cooling flow channel 203 passes cooling gas to cool the anode flow field plate 2 .
为提高阳极流场板2密封效果，所述阳极流场板2的反应流场的周边设有边框密封槽204，所述边框密封槽204内设有硅橡胶材质的密封结构；所述阳极流场板2中对应边框密封槽204的深度与阳极流道的阳极沟槽201深度相同。当本实施例双极板应用至电解水结构内时，通过边框密封槽204的密封结构可将阳极流场板2的反应流场整体密封，以避免外界环境干扰阳极流场板2的运行。In order to improve the sealing effect of the anode flow field plate 2, a frame sealing groove 204 is provided around the reaction flow field of the anode flow field plate 2, and a sealing structure made of silicone rubber is provided in the frame sealing groove 204; The depth of the corresponding frame sealing groove 204 in the field plate 2 is the same as the depth of the anode groove 201 of the anode flow channel. When the bipolar plate of this embodiment is applied to a water electrolysis structure, the reaction flow field of the anode flow field plate 2 can be sealed as a whole through the sealing structure of the frame sealing groove 204 to prevent the external environment from interfering with the operation of the anode flow field plate 2 .
进一步的，本实施例的所述阴极流场板3采用0.2mm厚的钛板，如图5所示，所述阴极流场板3的反应流场包括第二出口6以及阴极流道，所述第二出口6用于氢气和水流出，所述阴极流道一端连通至第二出口6；所述阴极流场板3中反应流场的流道也采用蛇形双流道结构；结合图3所示，所述阴极流道均包括交叉排列的阴极背脊302和阴极沟槽301，所述阴极沟槽301位于阴极流道的中间位置，所述阴极沟槽301的两侧位置分别设有所述阴极背脊302，所述阴极流道的阴极沟槽301可作为气体和液体通道，以供水体流动以及为氢气提供流动通道，而所述阴极背脊302则可将相邻阴极沟槽301进行分隔并支撑流道结构。氢离子通过在阴极流场板3得到电子，形成氢气，并汇集至阴极流场板3的阴极流道内，随同剩余水体沿阴极流道流至第二出口6排出。本实施例中所述阴极流场板3中阴极流道的开口背向隔板1设置，且所述阴极流场板3与隔板1之间的间隙位置设有第二冷却流道303，通过向第二冷却流道303通入冷却气体，可对阴极流场板3进行降温冷却。Further, the cathode flow field plate 3 in this embodiment adopts a 0.2mm thick titanium plate. As shown in Figure 5, the reaction flow field of the cathode flow field plate 3 includes the second outlet 6 and the cathode flow channel, so The second outlet 6 is used for hydrogen and water to flow out, and one end of the cathode flow channel is connected to the second outlet 6; the flow channel of the reaction flow field in the cathode flow field plate 3 also adopts a serpentine double flow channel structure; combined with Figure 3 As shown, the cathode flow channels include cathode back ridges 302 and cathode trenches 301 arranged in a crosswise manner. The cathode trench 301 is located in the middle of the cathode flow channel, and the cathode trench 301 is provided with respective locations on both sides. The cathode ridge 302, the cathode groove 301 of the cathode flow channel can be used as a gas and liquid channel to flow water and provide a flow channel for hydrogen, and the cathode ridge 302 can separate adjacent cathode trenches 301 And support the flow channel structure. Hydrogen ions obtain electrons in the cathode flow field plate 3 to form hydrogen gas, which is collected into the cathode flow channel of the cathode flow field plate 3 , and flows along with the remaining water along the cathode flow channel to the second outlet 6 for discharge. In this embodiment, the opening of the cathode flow channel in the cathode flow field plate 3 is set away from the separator 1, and a second cooling flow channel 303 is provided in the gap between the cathode flow field plate 3 and the separator 1. By passing cooling gas into the second cooling flow channel 303, the cathode flow field plate 3 can be cooled.
同理的，所述阴极流场板3的反应流场的周边也设有边框密封槽304，所述边框密封槽304内设有硅橡胶材质的密封结构；所述阴极流场板3中对应边框密封槽304的深度与阴极流道的阴极沟槽301深度相同，通过边框密封槽304的密封结构可将阴极流场板3的反应流场整体密封，以避免外界环境干扰阴极流场板3的运行。Similarly, a frame sealing groove 304 is also provided around the reaction flow field of the cathode flow field plate 3, and a sealing structure made of silicone rubber is provided in the frame sealing groove 304; The depth of the frame sealing groove 304 is the same as the depth of the cathode groove 301 of the cathode flow channel. Through the sealing structure of the frame sealing groove 304, the reaction flow field of the cathode flow field plate 3 can be sealed as a whole to prevent the external environment from interfering with the cathode flow field plate 3. of operation.
以上所述仅是本实用新型的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本实用新型技术原理的前提下，还可以做出若干改进和变形，这些改进和变形也应视为本实用新型的保护范围。The above are only the preferred embodiments of the present invention. It should be pointed out that those skilled in the art can make several improvements and modifications without departing from the technical principles of the present invention. These improvements and deformations should also be regarded as the protection scope of the present utility model.
Claims (8)
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