M306722 八、新型說明： 【新型所屬之技術領域】 本創作係關於一種流道板，尤指用於燃料電池之均勻流量的 流道板。 【先前技術】M306722 VIII. New description: [New technical field] This creation is about a flow channel board, especially a flow channel plate for uniform flow of fuel cells. [Prior Art]
燃料電池(fuel eell，FC)是-種彻化學魅接轉化成電 能的發電裝置。與傳統發電方式相比’崎電池具有低污染、低 噪音、高能量密度、較高能量轉化率等優點，是一種極具發展潛 力的電量來源。由於有著上述的優點，其細範_#廣泛，從 攜帶式電子裝置、家时電、交通工具、航紅業料領域均可 應用。 燃料電池的運作原理依其種類會有些許差異性，若以直接甲 醇型燃料電池(Direct MethanQl _如，剛為例，當甲 醇溶液在雜觸層進行魏反麟，會產线料、電子以及 ^氧化碳’這針鱗何經由_傳遞錄極，喊子則由 =電路傳輸至負載作工厚’再傳遞至陰極。於此同時，供給陰 =氧氣會與氫離子、電子在陰極觸媒層進行還原反應，而產 生出水。 為了將燃料均句地判至燃輸^ 習知的陰極流道板結構中， 2=：T、embly) ’ 板細部流賴的設計。 按照結構大致分為蛇形流道 M306722 (Serpentine Flow Field, SFF)、交叉流道（Interdigitated Flow Field，IFF)、棋盤流道（Grid Flow Field，GFF)、平行 流道（Channel Flow Field, CFF)，這其中平行流道雖然在效果 上較差，但因結構簡單、成本最低，故其被應用得也比較廣泛。Fuel eell (FC) is a power generation device that converts chemical into electrical energy. Compared with traditional power generation methods, Saki Battery has the advantages of low pollution, low noise, high energy density and high energy conversion rate. It is a potential source of electricity. Due to the above advantages, its fine range is widely applicable from the fields of portable electronic devices, home electric appliances, vehicles, and aviation materials. The operating principle of fuel cells will vary slightly depending on the type. If a direct methanol fuel cell (Direct MethanQl _, for example, when the methanol solution is used in the hetero-contact layer, it will produce wire, electrons and ^Oxide carbon's needle scale is transmitted via _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The layer undergoes a reduction reaction to produce water. In order to uniformly determine the fuel to the conventional cathode channel plate structure, 2 =: T, embly) 'The design of the plate details. According to the structure, it is roughly divided into Serpentine Flow Field (SFF), Interdigitated Flow Field (IFF), Grid Flow Field (GFF), and Channel Flow Field (CFF). Although the parallel flow channel is inferior in effect, it is widely used because of its simple structure and lowest cost.
晴麥閱弟1圖’弟1圖為習知流道板之結構不意圖。如第1 圖所示，習知流道板10至少包含可通入燃料之燃料入口 12a、 12b、連通至燃料入口 12a、12b之複數個流道l〇a〜1(Μ，且該些 流道10a〜10d之間彼此平行。 不過，由於流道l〇a〜l〇d的截面積均為相同，因此距離燃料 入口 12a、12b較為鄰近的流道10a、10d，其實際流入的燃料量 會較少於較中央（或不鄰近於燃料入口 12a、12b)的流道丨此、 l〇c ,進而導致每個流道分佈的燃料量並不夠均勻。基於這個因 素，使用習知流道板10的燃料電池，將因此無法提供均勻的反 應速率，導致電池性能下降，使用壽命相對縮短。 【新型内容】 、、本新型之主要目的在提供—種用於燃料電池之均勻流量的 反藉著口理地配置每個流道的截面積大小，使得每個流道 實’流通的燃料能夠較物，進而提高電池性能，增加使用 基於上述目的，本創作用於燃料電池 其至少包含可通入燃料 之均勻流量的流道板 之燃料入口、連通至燃料入口之複數個流 6 M3 06722 逼1且該些流道彼__。本創作均樹的流道板中，該 些抓逼的流通截面積彼此不均等’並經計算後決定不均等的情 況，彼此大財相差應〜。麵截_是指 道的截面積大小。 机 、關；本新叙優點與精神可崎由以下崎餅述及所附 圖式得到進一步的瞭解。 【實施方式】 口月多閱第2圖，第2圖為本創作用於燃料電池之均句流量的 流道板之結鮮意圖。如第2 _示，本創制於燃料電池之均 勾流量的流道板2〇同樣至少包含可通福料之祕人口似、 ⑽、連通至燃料入n 12a、12b之複數個流道施〜2Ge，且該些 流逗20a〜20e之間彼此間隔分開，例如該些流道2〇a〜2〇e之間採 以彼此平行的設置方式，但本鋪並不限制在平行設置方式的流 道。 為了合理分崎碰道實際上所流通_料量，在本創作流 迢板20中，該些流道20a〜20e的流通截面積彼此不均等，而流 通截面積是指燃料流通過該流道的截面積大小。 更具體來§兒，為了設計出流通截面積彼此不均等的該些流道 20a〜20e，大致分為二種設計原則。其_，該些流道2〇a〜2〇e的 流通截面積彼此相差10%〜30%。其二’在該些流道2〇a〜2〇e中， 鄰近燃料入口 12a或12b的流道20a或2〇e，其所具有的流通截 M306722 面積’大於不鄰近燃料入口 12a或12b的流道20c。其三，如第 2圖所示在該些流道20a〜20e中，從鄰近燃料入口 12a或20b的 流這20a或20e至中央的流道20c，各自具有的流通截面積為依 序遞減。 • . - . , 至於這些流道20a〜20e的截面形狀可為U字型截面、v字型 截面或其他不規則截面，而這些流道2〇a〜2〇e的材質採用石墨、 紹或不鏽鋼。或者，這些流道20a〜2〇e的材質採用與甲醇或曱酸 相容之工程塑膠類且耐酸性/抗腐蝕的材質。 藉由以上較佳具體實施例之詳述，係希望能更加清楚描述本 新型之特徵與精神，而並非以上述所揭露的較佳具體實施例來對 本新型之範’加以限制。相反地，其目的是希望能涵蓋各種改變 及具相等性的安排於本新型所欲申請之專利範圍的範疇内。 【圖式簡單說明】 第1圖為習知流道板之結構示意圖。 第2圖為本創作用於燃料電池之均勻流量的流道板之結構示 思圖。 【主要元件符號說明】 W、20流道板 12a、12b、22a、22b 燃料入口 l〇a〜l〇d、20a〜20e 流道Qingmai reading brother 1 map ‘Di brother 1 picture is the structure of the conventional flow channel board is not intended. As shown in FIG. 1, the conventional flow channel plate 10 includes at least fuel inlets 12a, 12b through which fuel can be introduced, and a plurality of flow passages 10a, 1b connected to the fuel inlets 12a, 12b (Μ, and the flows The passages 10a to 10d are parallel to each other. However, since the cross-sectional areas of the flow passages l〇a to l〇d are the same, the amount of fuel actually flowing in from the flow passages 10a and 10d adjacent to the fuel inlets 12a and 12b is the same. It will be less than the central (or not adjacent to the fuel inlets 12a, 12b) flow passages, l〇c, and thus the amount of fuel distributed in each flow channel is not uniform enough. Based on this factor, the conventional flow path is used. The fuel cell of the panel 10 will therefore not provide a uniform reaction rate, resulting in a decrease in battery performance and a relatively short service life. [New content] The main purpose of the present invention is to provide a kind of uniform flow for fuel cells. The size of the cross-sectional area of each flow channel is arbitrarily arranged, so that the fuel flowing through each flow channel can be compared with the object, thereby improving the battery performance, and the use is increased based on the above purpose, and the present invention is used for a fuel cell which at least includes Enter The fuel inlet of the flow channel of the uniform flow of the material, the plurality of flows 6 M3 06722 connected to the fuel inlet, and the flow paths are __. In the flow channel plate of the creation tree, the flow of the catch The cross-sectional areas are not equal to each other and the unequalities are determined after calculation. The difference between each other's wealth should be ~. The face-cut _ refers to the cross-sectional area of the road. Machine, off; this new advantage and spirit can be summarized by the following The description of the drawings is further understood. [Embodiment] The second month of the monthly reading is shown in Fig. 2, and the second figure is the original intention of creating a flow channel plate for the flow rate of the fuel cell. It is to be noted that the flow channel plate 2 created in the fuel cell has a flow rate of at least a flow channel of the fuel cell, and (10), a plurality of flow channels connected to the fuel into the n 12a, 12b, and 2Ge, and The flow streams 20a~20e are spaced apart from each other, for example, the flow paths 2〇a~2〇e are arranged in parallel with each other, but the shop is not limited to the flow paths in the parallel arrangement mode. The distribution of the amount of material actually distributed by the Sakisaki, in the creation of the rogue board 20, The flow cross-sectional areas of the flow passages 20a to 20e are not equal to each other, and the flow cross-sectional area refers to the cross-sectional area of the fuel flow passage through the flow passage. More specifically, in order to design the flow passages in which the flow cross-sectional areas are not equal to each other 20a~20e, roughly divided into two design principles. The _, the flow cross-sectional areas of the flow channels 2〇a~2〇e differ from each other by 10%~30%. The second 'in these flow channels 2〇a~ 2〇e, the flow passage 20a or 2〇e adjacent to the fuel inlet 12a or 12b has a flow intercept M306722 area 'greater than the flow passage 20c not adjacent to the fuel inlet 12a or 12b. Third, as shown in Fig. 2 In the flow passages 20a to 20e, the flow cross-sectional area from the flow 20a or 20e adjacent to the fuel inlet 12a or 20b to the central flow passage 20c is sequentially decreased. The cross-sectional shape of the flow passages 20a to 20e may be a U-shaped cross section, a v-shaped cross section or other irregular cross-section, and the materials of the flow passages 2〇a to 2〇e are made of graphite, or stainless steel. Alternatively, the flow paths 20a to 2〇e may be made of an engineering plastic which is compatible with methanol or tannic acid and which is resistant to acid/corrosion. The features and spirit of the present invention are intended to be more apparent from the detailed description of the preferred embodiments. On the contrary, the intention is to cover various modifications and equivalent arrangements within the scope of the patents claimed herein. [Simple description of the drawing] Fig. 1 is a schematic view showing the structure of a conventional flow channel plate. Fig. 2 is a structural diagram of a flow path plate for creating a uniform flow rate of a fuel cell. [Main component symbol description] W, 20 flow channel plates 12a, 12b, 22a, 22b Fuel inlets l〇a~l〇d, 20a~20e flow paths