TWM543473U - Bipolar plate structure with optimized gas duct - Google Patents
Bipolar plate structure with optimized gas duct Download PDFInfo
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本創作係有關於一種具優化氣體流道之雙極板結構,尤其是指一種適用於燃料電池之陽極電極板與電極板且具有創新氣體流道設計之金屬雙極板結構,可有效使燃料電池內的燃料氣體、氧化劑,以及冷卻劑等均勻分布於特定之氣體流道面,以達到提升金屬雙極板之耐腐蝕性能、機械強度,以及燃料電池之使用壽命者。 The present invention relates to a bipolar plate structure with an optimized gas flow path, in particular to a metal bipolar plate structure suitable for an anode electrode plate and an electrode plate of a fuel cell and having an innovative gas flow path design, which can effectively make fuel The fuel gas, the oxidant, and the coolant in the battery are evenly distributed on a specific gas flow path surface to improve the corrosion resistance, mechanical strength, and service life of the fuel cell of the metal bipolar plate.
按,基於傳統石化能源已逐漸耗盡,且石化能源之利用容易對生態環境產生重大的衝擊,因此,發展低汙染且具高發電效率的能源利用方式,早已成為各國政府重要的課題;在各種已發展的新興能源利用方式中,較常見的有太陽能電池、生化能源,以及燃料電池等,其中又以燃料電池約60%的高發電效率與低污染性而備受矚目;燃料電池係為一種直接將化學能轉換為電能的發電裝置,所使用的燃料可以是甲醇、乙醇、氫氣或其他碳氫化合物,再藉由氧氣作為氧化劑以產生電能,而在此電化學反應過程中則會生成水為反應副產物;與傳統發電方式比較,燃料電池具有低汙染、低噪音,以及高能量轉換效率等優點,且由於燃料電池係直接由燃料氣體氧化產生電能,因此其放電電流可以隨著燃料供應量增加而增大,只要持續供給燃料氣體及氧氣,便可持續發電,因此沒有電力衰竭及充電的問題,係一種極具前瞻性的乾淨能源。 According to the traditional petrochemical energy has been exhausted, and the use of petrochemical energy is likely to have a major impact on the ecological environment. Therefore, the development of low-pollution and high-efficiency energy use has long been an important issue for governments; Among the emerging emerging energy utilization methods, solar cells, biochemical energy sources, and fuel cells are more common, among which, the fuel cell is about 60% high in power generation efficiency and low pollution; the fuel cell system is a kind A power generation device that directly converts chemical energy into electrical energy. The fuel used may be methanol, ethanol, hydrogen or other hydrocarbons, and oxygen is used as an oxidant to generate electrical energy, and water is generated during the electrochemical reaction. It is a by-product of the reaction; compared with the conventional power generation method, the fuel cell has the advantages of low pollution, low noise, and high energy conversion efficiency, and since the fuel cell is directly generated by the oxidation of the fuel gas, the discharge current can be supplied along with the fuel supply. The amount increases and increases, as long as the fuel gas and oxygen are continuously supplied, it will be sustainable. Electric, so there is no power failure and charging problem, the Department of a highly prospective clean energy.
基本上,燃料電池的組成結構主要是由一片薄膜電極組(Membrane Electrode Assembly,MEA),以及兩電極板所構成,薄膜電極組(MEA)為燃料電池之核心,作為電化學反應之功用,而 電極板則是影響燃料電池商業化的關鍵因素之一,電極板的材料、流場結構或加工成本等均存在許多亟待解決的問題,習用的電極板材料主要有石墨、複合碳材與金屬基材等,針對由石墨與複合碳材所形成的電極板而言,雖然具有良好的導電性與耐腐性等優點,然而,由於製程複雜、耗費工時,且以該等材料製成的電極板厚度無法低於3毫米,而不利於燃料電池之微型化;對於金屬基材所形成的電極板而言,雖具有厚度薄、質量輕,以及可縮減燃料電池體積與質量等優點,然而,由於燃料電池的燃料氣體係藉由電極板的流道進行運輸,因此,流道的運輸能力亦會直接影響燃料電池的產電效能。 Basically, the composition of the fuel cell is mainly composed of a Membrane Electrode Assembly (MEA) and a two-electrode plate. The Membrane Electrode Assembly (MEA) is the core of the fuel cell and functions as an electrochemical reaction. Electrode plates are one of the key factors affecting the commercialization of fuel cells. There are many problems to be solved in the material, flow field structure or processing cost of electrode plates. The electrode plates used in practice are mainly graphite, composite carbon and metal. For materials such as graphite and composite carbon materials, although they have good electrical conductivity and corrosion resistance, they are complicated in process, time-consuming, and electrodes made of these materials. The thickness of the plate cannot be less than 3 mm, which is not conducive to the miniaturization of the fuel cell; for the electrode plate formed of the metal substrate, although the thickness is thin, the quality is light, and the volume and quality of the fuel cell can be reduced, however, Since the fuel gas system of the fuel cell is transported through the flow path of the electrode plate, the transport capacity of the flow channel also directly affects the power generation efficiency of the fuel cell.
本案創作人之一曾於中華民國專利發表公開號201419644的「燃料電池堆分隔板」的發明案,明白揭示一種以相同結構之分隔板分別供燃料電池之陽極與陰極使用,以降低燃料電池之製造成本,且藉由氣體流道所形成之箭簇形區塊,使得燃料氣體與氧化劑皆可均勻分布於氣體流道面,以提升燃料電池之產電效能,其使用的架構係令分隔板具有以沖壓成型之氣體流道面,以及對應氣體流道面之冷卻劑流道面,其中氣體流道面係具有複數個流道,該等流道皆具有複數個彎折,且彎折連接線為直線形狀與箭簇形狀,而箭簇形狀的尖端係位於同一水平面上,並於兩分隔板以冷卻劑流道面接合時,兩冷卻劑流道面之溝槽形成可輸送冷卻劑之直線流道;然而,由於此發明案所設計的氣體流道係具有複數個彎折,而當燃料氣體之氫氣或氧化劑之氧氣等氣體在氣體流道中流通反應時,容易因為流道所具有的複數個彎折而增加了氣體流動阻力,因而減低了燃料電池的產電效率。 One of the creators of this case, in the invention of the "fuel cell stack separator" of the Republic of China Patent Publication No. 201419644, clearly discloses that a partition plate of the same structure is used for the anode and cathode of the fuel cell, respectively, to reduce fuel. The manufacturing cost of the battery, and the arrow-shaped block formed by the gas flow channel, the fuel gas and the oxidant can be evenly distributed on the gas flow channel surface to improve the power generation efficiency of the fuel cell, and the structure of the structure is The partition plate has a gas flow passage surface formed by press forming, and a coolant flow passage surface corresponding to the gas flow passage surface, wherein the gas flow passage surface has a plurality of flow passages, and the flow passages have a plurality of bends, and The bending connecting line has a linear shape and a cluster shape, and the tip of the arrow cluster shape is located on the same horizontal plane, and when the two partition plates are joined by the coolant flow passage surface, the grooves of the two coolant flow passage surfaces are formed. a straight flow path for conveying a coolant; however, since the gas flow path designed by the invention has a plurality of bends, when a gas such as hydrogen of a fuel gas or an oxidant of an oxidant is in a gas flow path When the flow reactor, is easy because the flow passage has a plurality of bent increased gas flow resistance, thus reducing the efficiency of the fuel cell to generate electricity.
今,創作人即是鑑於上述之燃料電池堆分隔板之氣體流道存 在因複數個彎折而造成氣體流動阻力增加等諸多缺失,於是乃一本孜孜不倦之精神,並藉由其豐富之專業知識及多年之實務經驗所輔佐,而加以改善,並據此研創出本創作。 Today, the creator is in view of the gas flow path of the fuel cell stack separator mentioned above. The lack of gas flow resistance due to multiple bends, etc., is a tireless spirit, and is improved by its rich professional knowledge and years of practical experience, and based on this research creation.
本創作主要目的為提供一種具優化氣體流道之雙極板結構,尤其是指一種適用於燃料電池之陽極電極板與電極板且具有創新氣體流道設計之金屬雙極板結構,可有效使燃料電池內的燃料氣體、氧化劑,以及冷卻劑等均勻分布於特定之氣體流道面,以達到提升金屬雙極板之耐腐蝕性能、機械強度,以及燃料電池之使用壽命。 The main purpose of the present invention is to provide a bipolar plate structure with an optimized gas flow path, in particular to a metal bipolar plate structure suitable for an anode electrode plate and an electrode plate of a fuel cell and having an innovative gas flow path design, which can effectively The fuel gas, the oxidant, and the coolant in the fuel cell are uniformly distributed on a specific gas flow path surface to improve the corrosion resistance, mechanical strength, and service life of the fuel cell of the metal bipolar plate.
為了達到上述實施目的,本創作人提出一種具優化氣體流道之雙極板結構,係至少包括有一陽極電極板,以及一陰極電極板;陽極電極板係具有以沖壓加工成型之氣體流道面,氣體流道面係具有對應相反凹陷與凸起交替之複數個提供氫氣流通之溝槽,溝槽係由一氫氣入口端朝一氫氣出口端形成有一第一氣體流道、一第二氣體流道,以及複數條介於第一氣體流道與第二氣體流道間的第三氣體流道;其中第三氣體流道係縱向延伸一距離後,再縱向各分流出一第一子流道與一第二子流道,第一子流道再縱向延伸一距離後,橫向分別流出一第一孫流道與一第二孫流道,而第二子流道係縱向延伸一距離後,橫向分別流出一第三孫流道與一第四孫流道,第一孫流道與第二孫流道係橫向往外數個彎曲後,再匯流成第一子流道,第三孫流道與第四孫流道亦橫向往外數個彎曲後,再匯流成第二子流道,第一子流道與第二子流道再匯流後,由氫氣出口端流出;第一氣體流道係縱向延伸整個氣體流道面,再橫向往外數個彎曲,匯流至鄰近第三氣體流道之第一子流道後,由氫氣出口端流出;第二氣體流道係橫向延伸並分流出一第三子流道與一第四子流道,第三子流道係縱向延伸一距離後,橫向分別流出一第五孫流道 與一第六孫流道,第四子流道係橫向分流出一第七孫流道與一第八孫流道,第五孫流道與第六孫流道係橫向往外數個彎曲後,再匯流成第三子流道,第三子流道再匯流至鄰近第三氣體流道之第二子流道後,由氫氣出口端流出,第七孫流道與第八孫流道亦橫向往內數個彎曲後,再匯流成第四子流道,第四子流道係縱向延伸整個氣體流道面後,由氫氣出口端流出,其中橫向分布之流道係呈箭簇形狀,而箭簇形狀之尖端係位於同一水平線上;陰極電極板係具有以沖壓加工成型之氣體流道面,氣體流道面係具有對應相反凹陷與凸起交替之複數個提供氧氣流通之溝槽,溝槽係由一氧氣入口端朝一氧氣出口端形成有一第四氣體流道、一第五氣體流道,以及複數條介於第四氣體流道與第五氣體流道間的第六氣體流道;其中第四氣體流道係縱向延伸整個氣體流道面,再橫向延伸並分流出一第五子流道與一第六子流道,第五子流道與第六子流道橫向往外數個彎曲,匯流至第四氣體流道後,由氧氣出口端流出;第六氣體流道係縱向延伸一距離後,橫向分別流出一第七子流道與一第八子流道,第七子流道與第八子流道橫向往內數個彎曲,匯流至第六氣體流道後,由氧氣出口端流出;第五氣體流道係縱向延伸一距離後,再橫向經過數個彎曲,最後縱向延伸整個氣體流道面,再由氧氣出口端流出,其中橫向分布之流道係呈箭簇形狀,而箭簇形狀之尖端係位於同一水平線上;其中,陽極電極板與陰極電極板係反轉相對疊合,而互相貼合之陽極電極板的氣體流道面與陰極電極板的氣體流道面係形成供氣體流通之迴流凹槽,係為一氫氣流道及一氧氣流道,亦交錯形成複數個空缺,而空缺係形成供冷卻劑流通之冷卻劑流道。 In order to achieve the above-mentioned implementation object, the present author proposes a bipolar plate structure with an optimized gas flow path, comprising at least one anode electrode plate and a cathode electrode plate; the anode electrode plate has a gas flow path surface formed by press working. The gas flow channel surface has a plurality of grooves for supplying hydrogen gas corresponding to the opposite of the opposite depressions and the protrusions, and the groove is formed with a first gas flow path and a second gas flow path from a hydrogen inlet end toward a hydrogen outlet end. And a plurality of third gas flow paths between the first gas flow path and the second gas flow path; wherein the third gas flow path extends longitudinally by a distance, and then vertically flows out a first sub-flow path and a second sub-flow path, the first sub-flow path is further extended longitudinally by a distance, and a first female channel and a second sun channel are respectively flowed out laterally, and the second sub-flow channel extends longitudinally and then flows out one by one. The Sansun Runner Road and the No. 4 Sun Runway, the first Sun Runway and the Second Sun Runway are curved laterally and then merged into the first sub-flow path. The third Sun Runway and the Fourth Sun Runner are also laterally outward. After being bent, the second sub-flow path is merged, and after the first sub-flow path and the second sub-flow path are merged again, the hydrogen outlet end flows out; the first gas flow path extends longitudinally across the entire gas flow path surface, and then laterally a plurality of bending outwards, converging to the first sub-flow passage adjacent to the third gas flow passage, flowing out from the hydrogen outlet end; the second gas flow passage extending laterally and dividing a third sub-flow passage and a fourth sub-flow passage The third sub-flow channel extends a distance longitudinally and then flows out a fifth sun channel respectively. With the sixth solar channel, the fourth sub-flow channel is laterally separated from the seventh sun channel and the eighth sun channel, and the fifth sun channel and the sixth sun channel are curved laterally and then merged into a third sub-flow path. After the three sub-flow passages merge to the second sub-flow passage adjacent to the third gas flow passage, the third sub-flow passage flows out from the hydrogen outlet end, and the seventh grandchild flow passage and the eighth grandchild flow passage are also bent laterally inward, and then merged into the fourth sub-flow passage. The fourth sub-flow channel extends longitudinally from the entire gas flow channel surface, and flows out from the hydrogen outlet end, wherein the laterally distributed flow channel is in the shape of an arrow cluster, and the tip of the arrow cluster shape is on the same horizontal line; the cathode electrode plate system The utility model has a gas flow passage surface formed by press forming, wherein the gas flow passage surface has a plurality of grooves for supplying oxygen circulation corresponding to the opposite depressions and the protrusions, and the groove is formed by an oxygen inlet end toward an oxygen outlet end and a fourth portion. a gas flow passage, a fifth gas flow passage, and a plurality of sixth gas flow passages between the fourth gas flow passage and the fifth gas flow passage; wherein the fourth gas flow passage longitudinally extends the entire gas flow passage surface Further extending and splitting a fifth sub-flow passage and a sixth sub-flow passage, the fifth sub-flow passage and the sixth sub-flow passage are laterally bent outward, and are merged to the fourth gas flow passage, and then flow out from the oxygen outlet end. After the sixth gas flow channel extends longitudinally for a distance, a seventh sub-flow channel and an eighth sub-flow channel are respectively flowed out laterally, and the seventh sub-flow channel and the eighth sub-flow channel are bent laterally inwardly and converged to After the sixth gas flow path, the gas exits from the oxygen outlet end; the fifth gas flow path extends longitudinally for a distance, then passes through several bends laterally, and finally extends the entire gas flow passage surface longitudinally, and then flows out from the oxygen outlet end, wherein the lateral distribution The flow channel is in the shape of an arrow cluster, and the tip of the shape of the arrow cluster is on the same horizontal line; wherein the anode electrode plate and the cathode electrode plate are reversely overlapped, and the gas flow channel faces of the anode electrode plates which are attached to each other The gas flow channel surface of the cathode electrode plate forms a reflux groove for gas circulation, which is a hydrogen flow channel and an oxygen flow channel, and is also staggered to form a plurality of vacancies, and the vacancy system forms a coolant flow for the coolant to circulate. Road.
如上所述的具優化氣體流道之雙極板結構,其中陽極電極板與陰極電極板兩側端中央處係各分別設置有對應之冷卻劑進入歧 道,以及冷卻劑流出歧道,冷卻劑進入歧道與冷卻劑流出歧道係與空缺連通。 The bipolar plate structure with optimized gas flow channel as described above, wherein the anode electrode plate and the cathode electrode plate are respectively provided with corresponding coolant inlets at the center of both ends of the cathode electrode plate The passage, and the coolant flow out of the manifold, the coolant entering the manifold and the coolant outflow manifold are in communication with the vacancy.
如上所述的具優化氣體流道之雙極板結構,冷卻劑進入歧道,以及冷卻劑流出歧道係進一步分別設有一冷卻劑入口支撐,以及一冷卻劑出口支撐。 The bipolar plate structure with optimized gas flow paths as described above, the coolant entering the manifold, and the coolant outflow manifold are further provided with a coolant inlet support and a coolant outlet support, respectively.
如上所述的具優化氣體流道之雙極板結構,陽極電極板與陰極電極板係由金屬材質所製成。 As described above, the bipolar plate structure with the optimized gas flow path, the anode electrode plate and the cathode electrode plate are made of a metal material.
如上所述的具優化氣體流道之雙極板結構,金屬材質係為不鏽鋼。 The bipolar plate structure with optimized gas flow path as described above is made of stainless steel.
如上所述的具優化氣體流道之雙極板結構,陽極電極板與陰極電極板之板材厚度係介於0.1毫米(millimeter,mm)~0.2毫米之間。 As described above, the bipolar plate structure with the optimized gas flow path has a plate thickness of between 0.1 mm (millimeter, mm) and 0.2 mm.
如上所述的具優化氣體流道之雙極板結構,第一氣體流道、第二氣體流道,以及第三氣體流道係具有相同之總長度。 The bipolar plate structure with optimized gas flow paths as described above, the first gas flow path, the second gas flow path, and the third gas flow path have the same total length.
如上所述的具優化氣體流道之雙極板結構,第四氣體流道、第五氣體流道,以及第六氣體流道係具有相同之總長度。 As described above, the bipolar plate structure having the optimized gas flow path, the fourth gas flow path, the fifth gas flow path, and the sixth gas flow path have the same total length.
如上所述的具優化氣體流道之雙極板結構,陽極電極板與陰極電極板之一側係各進一步設置有一第一快速接頭與一第二快速接頭,以提供量測電壓與電流使用。 As described above, the bipolar plate structure with the optimized gas flow path, one side of the anode electrode plate and the cathode electrode plate are further provided with a first quick connector and a second quick connector to provide measurement voltage and current usage.
本創作之另一目的為利用如上所述之陽極電極板與陰極電極板以提供一種燃料電池,係由複數個燃料電池單元串接而成,其中燃料電池單元係包括一習知之薄膜電極組、至少兩組以一陽極電極板與一陰極電極板反轉相對疊合之迴流凹槽雙極板,以及至少二個密封件,薄膜電極組之二側係分別依序設置一個密封件與一組迴流凹槽雙極板。 Another object of the present invention is to provide a fuel cell by using an anode electrode plate and a cathode electrode plate as described above, which are formed by a plurality of fuel cell units connected in series, wherein the fuel cell unit comprises a conventional membrane electrode assembly. At least two sets of a reflow grooved bipolar plate with an anode electrode plate and a cathode electrode plate oppositely overlapping, and at least two sealing members, the two sides of the membrane electrode group are respectively provided with a sealing member and a group Reflow grooved bipolar plates.
藉此,本創作之具優化氣體流道之雙極板結構係藉由陽極電 極板蜿蜒之第一氣體流道、第二氣體流道與第三氣體流道,以及陰極電極板蜿蜒之第四氣體流道、第五氣體流道與第六氣體流道所形成之大量筆直直線形狀與箭簇形狀之分隔區塊,除有助於維持電池結構強度,燃料氣體之氫氣與氧化劑之氧氣可均勻且無阻力地分佈於順暢筆直之氣體流道面,確保反應氣體有足夠的濃度進入薄膜電極組(MEA),以便能進行燃料電池之充分反應,進而提升燃料電池之產電效能;此外,本創作之具優化氣體流道之雙極板結構係藉由將金屬材質之不鏽鋼板沖壓加工成型方式形成燃料氣體流道,由於不鏽鋼板材具有厚度薄與質量輕等優點,不僅可以縮減燃料電池之體積,亦能達到輕量化之需求,且不鏽鋼板成型後會經過鍍膜處理或氣體熱處理等表面改質動作,藉以改善金屬板之耐腐蝕性能與增加機械強度,達到提升電池使用壽命之目的;最後,本創作之具優化氣體流道之雙極板結構係藉由陽極電極板與陰極電極板反轉相對貼合之面交錯形成之空缺,以形成冷卻劑流道,因此接點處必須足夠多以承受燃料電池壓迫組裝之壓力,且藉由氣體流道匯流設計,增大在陽極電極板之氣體流道面與陰極電極板之氣體流道面背面所形成之冷卻劑流道的最大面積,同時滿足冷卻需求與提供較高重量功率密度之優點。 In this way, the bipolar plate structure of the optimized gas flow path is designed by the anode. a first gas flow channel, a second gas flow path and a third gas flow path of the electrode plate, and a fourth gas flow path, a fifth gas flow path and a sixth gas flow path of the cathode electrode plate A large number of straight linear shapes and clusters of the shape of the cluster, in addition to help maintain the structural strength of the battery, the hydrogen gas of the fuel gas and the oxygen of the oxidant can be evenly and non-resistively distributed on the smooth straight gas flow surface, ensuring that the reaction gas has Sufficient concentration enters the membrane electrode assembly (MEA) to enable sufficient reaction of the fuel cell to improve the power generation efficiency of the fuel cell. In addition, the bipolar plate structure of the optimized gas flow path is made of metal. The stainless steel sheet press forming method forms a fuel gas flow path. Since the stainless steel sheet has the advantages of thin thickness and light weight, the volume of the fuel cell can be reduced, and the demand for light weight can be achieved, and the stainless steel sheet is subjected to coating treatment after molding. Or surface modification operation such as gas heat treatment, in order to improve the corrosion resistance of the metal plate and increase the mechanical strength, thereby improving the battery life. The purpose of the present invention is that the bipolar plate structure of the optimized gas flow path is formed by the vacancy of the opposite surface of the anode electrode plate and the cathode electrode plate to form a coolant flow path, so the contact point It must be enough to withstand the pressure of the fuel cell compression assembly, and increase the coolant flow path formed on the gas flow path surface of the anode electrode plate and the gas flow path surface of the cathode electrode plate by the gas flow channel confluence design. The largest area, while meeting the cooling needs and the advantages of providing higher weight power density.
(1)‧‧‧陽極電極板 (1)‧‧‧Anode electrode plate
(11)‧‧‧氣體流道面 (11) ‧‧‧ gas flow surface
(111)‧‧‧第一氣體流道 (111)‧‧‧First gas flow path
(112)‧‧‧第二氣體流道 (112)‧‧‧Second gas flow path
(1121)‧‧‧第三子流道 (1121)‧‧‧ Third sub-channel
(11211)‧‧‧第五孫流道 (11211) ‧ ‧ Fifth Sun Runner
(11212)‧‧‧第六孫流道 (11212) ‧‧‧ Sixth Sun Runner
(1122)‧‧‧第四子流道 (1122) ‧ ‧ fourth sub-runner
(11221)‧‧‧第七孫流道 (11221) ‧‧ ‧ Seventh Sun Runner
(11222)‧‧‧第八孫流道 (11222) ‧ ‧ Eighth Sun Runner
(113)‧‧‧第三氣體流道 (113)‧‧‧ Third gas flow path
(1131)‧‧‧第一子流道 (1131)‧‧‧First sub-channel
(11311)‧‧‧第一孫流道 (11311) ‧‧‧First Sun Runner
(11312)‧‧‧第二孫流道 (11312) ‧‧‧Second Sun Runner
(1132)‧‧‧第二子流道 (1132) ‧‧‧Second sub-channel
(11321)‧‧‧第三孫流道 (11321) ‧ ‧ Third Sun Runner
(11322)‧‧‧第四孫流道 (11322) ‧ ‧ Fourth Sun Runner
(114)‧‧‧彎曲 (114)‧‧‧Bend
(12)‧‧‧溝槽 (12) ‧‧‧ trench
(13)‧‧‧氫氣入口端 (13) ‧‧‧ Hydrogen inlet end
(14)‧‧‧氫氣出口端 (14) ‧‧‧ Hydrogen outlet
(15)‧‧‧尖端 (15) ‧ ‧ cutting edge
(16)‧‧‧冷卻劑進入歧道 (16) ‧‧‧ coolant enters the lane
(161)‧‧‧冷卻劑入口支撐 (161) ‧‧‧ coolant inlet support
(17)‧‧‧冷卻劑流出歧道 (17) ‧‧‧ coolant outflow manifold
(171)‧‧‧冷卻劑出口支撐 (171) ‧‧‧ coolant outlet support
(18)‧‧‧第一快速接頭 (18)‧‧‧First quick connector
(19)‧‧‧氫氣進氣歧道 (19) ‧‧‧ Hydrogen intake manifold
(2)‧‧‧陰極電極板 (2) ‧‧‧cathode electrode plate
(21)‧‧‧氣體流道面 (21) ‧‧‧ gas flow surface
(211)‧‧‧第四氣體流道 (211) ‧‧‧fourth gas flow path
(2111)‧‧‧第五子流道 (2111)‧‧‧ fifth sub-flow path
(2112)‧‧‧第六子流道 (2112) ‧‧‧ sixth sub-channel
(212)‧‧‧第五氣體流道 (212) ‧‧‧ fifth gas flow path
(213)‧‧‧第六氣體流道 (213) ‧‧‧ sixth gas flow path
(2131)‧‧‧第七子流道 (2131)‧‧‧ seventh sub-flow path
(2132)‧‧‧第八子流道 (2132) ‧‧‧ eighth sub-channel
(214)‧‧‧彎曲 (214)‧‧‧Bend
(22)‧‧‧溝槽 (22) ‧‧‧ trench
(23)‧‧‧氧氣入口端 (23)‧‧‧Oxygen inlet end
(24)‧‧‧氧氣出口端 (24) ‧‧‧Oxygen outlet
(25)‧‧‧尖端 (25) ‧ ‧ cutting edge
(26)‧‧‧第二快速接頭 (26)‧‧‧Second quick connector
(3)‧‧‧氫氣流道 (3) ‧‧‧ Hydrogen flow path
(4)‧‧‧氧氣流道 (4) ‧‧‧Oxygen flow path
(5)‧‧‧空缺 (5) ‧ ‧ vacancies
(6)‧‧‧冷卻劑流道 (6) ‧‧‧ coolant flow path
(7)‧‧‧燃料電池單元 (7)‧‧‧ fuel cell unit
(71)‧‧‧薄膜電極組 (71) ‧‧‧Thin electrode group
(72)‧‧‧迴流凹槽雙極板 (72) ‧‧‧Reflux recessed bipolar plates
(73)‧‧‧密封件 (73)‧‧‧Seal
第一圖:本創作具優化氣體流道之雙極板結構其一較佳實施例之陽極電極板結構俯視圖 First: a top view of an anode electrode plate structure of a preferred embodiment of a bipolar plate structure with optimized gas flow paths
第二圖:本創作具優化氣體流道之雙極板結構其一較佳實施例之陰極電極板結構俯視圖 The second figure: a top view of a cathode electrode plate structure of a preferred embodiment of the bipolar plate structure with optimized gas flow path
第三圖:本創作具優化氣體流道之雙極板結構其一較佳實施例之雙極板疊合示意圖 The third figure: a bipolar plate stacking diagram of a preferred embodiment of the bipolar plate structure with optimized gas flow path
第四圖:本創作具優化氣體流道之雙極板結構其一較佳實施 例之冷卻劑流道示意圖 Figure 4: This is a preferred implementation of a bipolar plate structure with optimized gas flow paths. Example of coolant flow path
第五圖:本創作具優化氣體流道之雙極板結構其一較佳實施例之氣體岐道入口剖面示意圖 Figure 5: Schematic diagram of a gas ramp inlet of a preferred embodiment of a bipolar plate structure with optimized gas flow paths
第六圖:本創作具優化氣體流道之雙極板結構其一較佳實施例之燃料電池單元堆疊示意圖 Fig. 6 is a schematic diagram showing the stacking of fuel cell units of a preferred embodiment of the bipolar plate structure with optimized gas flow paths
第七圖:本創作具優化氣體流道之雙極板結構其一較佳實施例之燃料電池結構示意圖 Figure 7: Schematic diagram of a fuel cell structure of a preferred embodiment of a bipolar plate structure with optimized gas flow paths
第八圖:本創作具優化氣體流道之雙極板結構其一較佳實施例之燃料電池單元剖面示意圖 Figure 8 is a schematic cross-sectional view of a fuel cell unit of a preferred embodiment of a bipolar plate structure with optimized gas flow paths
本創作之目的及其結構設計功能上的優點,將依據以下圖面所示之較佳實施例予以說明,俾使審查委員能對本創作有更深入且具體之瞭解。 The purpose of this creation and the advantages of its structural design function will be explained in accordance with the preferred embodiment shown in the following figures, so that the reviewing committee can have a deeper and more specific understanding of the creation.
首先,燃料電池之電極板的主要功能係導引燃料氣體之氫氣與氧化劑之氧氣等反應氣體分別由陽極電極板(1)之氫氣入口端(13)與陰極電極板(2)之氧氣入口端(23)進入流道,以及導引冷卻劑由冷卻劑進入歧道(16)進入位於陽極電極板(1)與陰極電極板(2)的背面流道,藉由創新之流道設計使氫氣與氧氣分布於反應面積,再將未使用的反應氣體和冷卻劑由流道導引排出,而陽極電極板(1)與陰極電極板(2)係設置於薄膜電極組的二側端,其運作的原理為燃料氣體之氫氣由陽極電極板(1)進入燃料電池,而氧化劑之氧氣則由陰極電極板(2)進入燃料電池,經由薄膜電極組的反應作用,使得陽極燃料氣體的氫分子分解成兩個質子(proton)與兩個電子(electron),其中質子被氧吸引到陰極,電子則經由外電路形成電流後到達陰極,而質子、氧及電子於陰極發生反應形成水分子,燃料電池的運作方式已為習知技藝中眾所皆知的知識,且並非本創作之重點,在此將不 再贅述,本創作之技術特徵係著重於金屬雙極板之流道造型的安排和設置,以解決本創作人先前之發明案所遭遇的氫氣與氧氣等反應氣體不易均勻而無阻力地分布於陽極電極板(1)的氣體流道面(11)與陰極電極板(2)的氣體流道面(21)之缺點;再者,請參閱第一、二圖所示,為本創作具優化氣體流道之雙極板結構其一較佳實施例之陽極電極板結構俯視圖,以及陰極電極板結構俯視圖,其中本創作具優化氣體流道之雙極板結構係至少包括有: 一陽極電極板(1),係具有以沖壓加工成型之氣體流道面(11),氣體流道面(11)係具有對應相反凹陷與凸起交替之複數個提供氫氣流通之溝槽(12),溝槽(12)係由一氫氣入口端(13)朝一氫氣出口端(14)形成有一第一氣體流道(111)、一第二氣體流道(112),以及複數條介於第一氣體流道(111)與第二氣體流道(112)間的第三氣體流道(113);其中第三氣體流道(113)係縱向延伸一距離後,再縱向各分流出一第一子流道(1131)與一第二子流道(1132),第一子流道(1131)再縱向延伸一距離後,橫向分別流出一第一孫流道(11311)與一第二孫流道(11312),而第二子流道(1132)係縱向延伸一距離後,橫向分別流出一第三孫流道(11321)與一第四孫流道(11322),第一孫流道(11311)與第二孫流道(11312)係橫向往外數個彎曲(114)後,再匯流成第一子流道(1131),第三孫流道(11321)與第四孫流道(11322)亦橫向往外數個彎曲(114)後,再匯流成第二子流道(1132),第一子流道(1131)與第二子流道(1132)再匯流後,由氫氣出口端(14)流出;第一氣體流道(111)係縱向延伸整個氣體流道面(11),再橫向往外數個彎曲(114),匯流至鄰近第三氣體流道(113)之第一子流道(1131)後,由氫氣出口端(14)流出;第二氣體流道(112)係橫向延伸並分流出一第三子流道(1121)與一第四子流道(1122),第三子流道(1121)係縱向延伸一距離後,橫向分別流出一第五孫流 道(11211)與一第六孫流道(11212),第四子流道(1122)係橫向分流出一第七孫流道(11221)與一第八孫流道(11222),第五孫流道(11211)與第六孫流道(11212)係橫向往外數個彎曲(114)後,再匯流成第三子流道(1121),第三子流道(1121)再匯流至鄰近第三氣體流道(113)之第二子流道(1132)後,由氫氣出口端(14)流出,第七孫流道(11221)與第八孫流道(11222)亦橫向往內數個彎曲(114)後,再匯流成第四子流道(1122),第四子流道(1122)係縱向延伸整個氣體流道面(11),由氫氣出口端(14)流出,其中橫向分布之該等流道係呈箭簇形狀,而該等箭簇形狀之尖端(15)係位於同一水平線上;此外,值得注意的是,橫向分布之氣體流道往內或往外數個彎曲(114)之判斷方式係以氣體流道流出之延伸方向為法向量為區分,往氣體流道之法向量方向靠近的氣體流道稱之為「往內」彎曲,而遠離氣體流道之法向量的氣體流道稱之為「往外」彎曲;再者,在本創作其一較佳實施例中,位於第一氣體流道(111)與第二氣體流道(112)間係有4條第三氣體流道(113),而第一氣體流道(111)、第二氣體流道(112),以及第三氣體流道(113)係具有相同之總長度,以求每條氣體流道之阻力皆相近;在此值得注意的是,氣體流道的數量僅為其一較佳實施例,在閱讀及了解本創作的教導後,熟此技藝者當知道,本創作第三氣體流道(113)的數量係可少於4條或多於4條,並不會影響本創作的實際實施;以及 一陰極電極板(2),係具有以沖壓加工成型之氣體流道面(21),氣體流道面(21)係具有對應相反凹陷與凸起交替之複數個提供氧氣流通之溝槽(22),溝槽(22)係由一氧氣入口端(23)朝一氧氣出口端(24)形成有一第四氣體流道(211)、一第五氣體流道(212),以及複數條介於第四氣體流道(211)與第五氣體流道(212)間的第六氣體流道(213);其中第四氣體流道(211)係縱向延伸整個氣體流道 面(21),再橫向延伸並分流出一第五子流道(2111)與一第六子流道(2112),第五子流道(2111)與第六子流道(2112)橫向往外數個彎曲(214),匯流至第四氣體流道(211)後,由氧氣出口端(24)流出;第六氣體流道(213)係縱向延伸一距離後,橫向分別流出一第七子流道(2131)與一第八子流道(2132),第七子流道(2131)與第八子流道(2132)橫向往內數個彎曲(214),匯流至第六氣體流道(213)後,由氧氣出口端(24)流出;第五氣體流道(212)係縱向延伸一距離後,再橫向經過數個彎曲(214),最後縱向延伸整個氣體流道面(21),再由氧氣出口端(24)流出,其中橫向分布之流道係呈箭簇形狀,而箭簇形狀之尖端(25)係位於同一水平線上;在本創作其一較佳實施例中,位於第四氣體流道(211)與第五氣體流道(212)間係有9條第六氣體流道(213),而第四氣體流道(211)、第五氣體流道(212),以及第六氣體流道(213)係具有相同之總長度,以求每條氣體流道之阻力皆相近;在此值得注意的是,氣體流道的數量僅為其一較佳實施例,在閱讀及了解本創作的教導後,熟此技藝者當知道,本創作第六氣體流道(213)的數量係可少於9條或多於9條,並不會影響本創作的實際實施。 First, the main function of the electrode plate of the fuel cell is to direct the reaction gas such as hydrogen gas of the fuel gas and oxygen of the oxidant from the oxygen inlet end (13) of the anode electrode plate (1) and the oxygen inlet end of the cathode electrode plate (2), respectively. (23) entering the flow channel, and guiding the coolant from the coolant into the manifold (16) into the back flow channel located at the anode electrode plate (1) and the cathode electrode plate (2), and the hydrogen is designed by the innovative flow channel design And the oxygen is distributed in the reaction area, and the unused reaction gas and the coolant are guided and discharged by the flow channel, and the anode electrode plate (1) and the cathode electrode plate (2) are disposed at the two side ends of the film electrode group, The principle of operation is that the hydrogen of the fuel gas enters the fuel cell from the anode electrode plate (1), and the oxygen of the oxidant enters the fuel cell from the cathode electrode plate (2), and the hydrogen molecules of the anode fuel gas are caused by the reaction of the thin film electrode group. Decomposed into two protons and two electrons, in which protons are attracted to the cathode by oxygen, electrons form current through an external circuit and then reach the cathode, while protons, oxygen and electrons react at the cathode to form water molecules, fuel Works pool known as the study of knowledge is well known in the art, and is not a focus of creation, this will not Furthermore, the technical features of this creation focus on the arrangement and arrangement of the runner shape of the metal bipolar plate to solve the problem that the reaction gases such as hydrogen and oxygen encountered by the creator's previous invention are not uniformly distributed without resistance. The disadvantages of the gas flow channel surface (11) of the anode electrode plate (1) and the gas flow channel surface (21) of the cathode electrode plate (2); further, please refer to the first and second figures to optimize the creation tool. The bipolar plate structure of the gas flow path is a top view of the anode electrode plate structure of a preferred embodiment, and the top view of the cathode electrode plate structure, wherein the bipolar plate structure of the optimized gas flow path comprises at least: An anode electrode plate (1) has a gas flow path surface (11) formed by press working, and the gas flow path surface (11) has a plurality of grooves for supplying hydrogen gas flow corresponding to alternating opposite depressions and protrusions (12). The trench (12) is formed by a hydrogen inlet end (13) toward a hydrogen outlet end (14) having a first gas flow path (111), a second gas flow path (112), and a plurality of a third gas flow path (113) between the gas flow path (111) and the second gas flow path (112); wherein the third gas flow path (113) extends longitudinally a distance, and then vertically flows out one by one A sub-flow channel (1131) and a second sub-flow channel (1132), the first sub-flow channel (1131) further extends a distance longitudinally, and then laterally flow out a first grandchild channel (11311) and a second grandchild channel (11312). And the second sub-flow passage (1132) extends longitudinally for a distance, and laterally flows out a third grandchild channel (11321) and a fourth grandchild channel (11322), a first grandchild channel (11311) and a second grandchild channel (11312). After several bends (114) laterally outward, it merges into the first sub-flow passage (1131), and the third grandchild flow passage (11321) and the fourth grandchild flow passage (11322) are also bent laterally outward. After (114), the second sub-flow channel (1132) is merged, and the first sub-flow channel (1131) and the second sub-flow channel (1132) are merged again, and then flow out from the hydrogen outlet end (14); the first gas The flow passage (111) extends longitudinally across the entire gas flow passage surface (11), and then laterally outwardly bends (114), and merges to the first sub-flow passage (1131) adjacent to the third gas flow passage (113). The hydrogen outlet end (14) flows out; the second gas flow passage (112) extends laterally and divides a third sub-flow passage (1121) and a fourth sub-flow passage (1122), and the third sub-flow passage (1121) After extending a distance in the longitudinal direction, a fifth grandchild stream flows out in the horizontal direction. Road (11211) and a sixth grandchild channel (11212), the fourth sub-flow channel (1122) is laterally separated from a seventh grandchild channel (11221) and an eighth grandchild channel (11222), a fifth grandchild channel (11211) and a sixth Sun Rundao (11212) is laterally outwardly curved (114) and then merged into a third sub-flow passage (1121). The third sub-flow passage (1121) is merged to a second adjacent third gas flow passage (113). After the sub-flow channel (1132), the hydrogen outlet port (14) flows out, and the seventh sun channel (11221) and the eighth sun channel (11222) are also bent laterally (114) laterally, and then merged into the fourth sub-flow channel. (1122), the fourth sub-flow passage (1122) extends longitudinally across the entire gas flow passage surface (11) and flows out from the hydrogen outlet end (14), wherein the laterally distributed flow passages are in the shape of an arrow cluster, and the same The tip of the arrow cluster shape (15) is located on the same horizontal line; in addition, it is worth noting that the laterally distributed gas flow path is judged inward or outward by a plurality of curves (114) in such a manner that the gas flow path flows out in the direction in which the gas flow path flows out. The normal vector is distinguished. The gas flow path that is close to the normal vector of the gas flow path is called "inward" bending, and the normal vector away from the gas flow path. The gas flow path is referred to as "outward" bending; further, in a preferred embodiment of the present invention, there are four third lines between the first gas flow path (111) and the second gas flow path (112). a gas flow path (113), and the first gas flow path (111), the second gas flow path (112), and the third gas flow path (113) have the same total length for each gas flow path The resistances are all similar; it is worth noting here that the number of gas flow paths is only a preferred embodiment. After reading and understanding the teachings of the present creation, those skilled in the art know that the third gas flow path of the creation ( 113) may be less than 4 or more than 4, and will not affect the actual implementation of the creation; A cathode electrode plate (2) has a gas flow passage surface (21) formed by press working, and the gas flow passage surface (21) has a plurality of grooves for supplying oxygen flow corresponding to the opposite depressions and projections. The groove (22) is formed by an oxygen inlet end (23) toward an oxygen outlet end (24), a fourth gas flow path (211), a fifth gas flow path (212), and a plurality of a sixth gas flow path (213) between the fourth gas flow path (211) and the fifth gas flow path (212); wherein the fourth gas flow path (211) extends longitudinally throughout the gas flow path The surface (21) extends laterally and divides a fifth sub-flow passage (2111) and a sixth sub-flow passage (2112), and the fifth sub-flow passage (2111) and the sixth sub-flow passage (2112) are laterally outward. a plurality of bends (214), after flowing to the fourth gas flow passage (211), flowing out from the oxygen outlet end (24); the sixth gas flow passage (213) extends longitudinally for a distance, and then flows out a seventh sub-segment The flow channel (2131) and the eighth sub-flow channel (2132), the seventh sub-flow channel (2131) and the eighth sub-flow channel (2132) are laterally curved (214) laterally, and merged to the sixth gas flow channel. After (213), it flows out from the oxygen outlet end (24); the fifth gas flow path (212) extends longitudinally a distance, then passes through several bends (214) laterally, and finally extends the entire gas flow passage surface (21) longitudinally. And flowing out from the oxygen outlet end (24), wherein the laterally distributed flow channels are in the shape of an arrow cluster, and the tip of the arrow cluster shape (25) is on the same horizontal line; in a preferred embodiment of the present invention, There are nine sixth gas flow paths (213) between the fourth gas flow path (211) and the fifth gas flow path (212), and the fourth gas flow path (211) and the fifth gas flow path (212), And a sixth gas flow path (213) Having the same total length, so that the resistance of each gas flow path is similar; it is worth noting that the number of gas flow paths is only a preferred embodiment thereof, and after reading and understanding the teachings of the present invention, it is cooked. The skilled person knows that the number of the sixth gas flow passages (213) of the present creation may be less than nine or more than nine, and does not affect the actual implementation of the creation.
此外,陽極電極板(1)與陰極電極板(2)係可反轉相對疊合,而互相貼合之陽極電極板(1)的氣體流道面(11)與陰極電極板(2)的氣體流道面(21)係形成供氣體流通之迴流凹槽,係為一氫氣流道(3)及一氧氣流道(4),亦交錯形成複數個空缺(5),而空缺(5)係形成供冷卻劑流通之冷卻劑流道(6),請一併參閱第三、四圖所示,為本創作具優化氣體流道之雙極板結構其一較佳實施例之雙極板疊合示意圖,以及冷卻劑流道示意圖,其中第三圖表示陽極電極板(1)與陰極電極板(2)之疊合,係將陽極電極板(1)上下反轉180度而疊合在陰極電極板(2)之上方,第四圖所示則是利用陽極電極板(1)之氣體 流道面(11)與陰極電極板(2)之氣體流道面(21)的背面,也就是陽極電極板(1)與陰極電極板(2)的外側,當陽極電極板(1)與陰極電極板(2)的外側互相疊合時,電極板與電極板接觸的地方會產生阻隔,非接觸的空缺(5)則產生通道提供冷卻劑之液體流動,即是所謂的冷卻劑流道(6),此亦是將橫向氣體流道設計為箭簇形狀之理由,也就是陽極電極板(1)與陰極電極板(2)疊合後產生的柵格狀空間可以善加運用成為冷卻劑流通的通道;再者,冷卻劑流場希望盡可能達到最大面積來提升冷卻效果,同時接點處也必須夠多以承受燃料電池壓迫組裝的壓力,因此陽極電極板(1)與陰極電極板(2)等金屬雙極板係具有靈活與細膩的設計,可同時滿足冷卻需求與提供較高的重量功率密度;此外,陽極電極板(1)與陰極電極板(2)兩側端中央處係各分別設置有對應之冷卻劑進入歧道(16),以及冷卻劑流出歧道(17),冷卻劑進入歧道(16)與冷卻劑流出歧道(17)係與形成空缺(5)之冷卻劑流道(6)連通,以提供冷卻劑進入,且冷卻劑進入歧道(16),以及冷卻劑流出歧道(17)係進一步分別設有一冷卻劑入口支撐(161),以及一冷卻劑出口支撐(171)。 In addition, the anode electrode plate (1) and the cathode electrode plate (2) are reversibly overlapped, and the gas flow path (11) and the cathode electrode plate (2) of the anode electrode plate (1) which are attached to each other are attached. The gas flow channel surface (21) forms a reflux groove for gas circulation, which is a hydrogen flow channel (3) and an oxygen flow channel (4), and also forms a plurality of vacancies (5), and vacancies (5) Forming a coolant flow path (6) for the coolant to flow, please refer to the third and fourth figures together, which is a bipolar plate of a preferred embodiment of the bipolar plate structure for optimizing the gas flow path. A schematic diagram of the superposition, and a schematic diagram of the coolant flow path, wherein the third figure shows the superposition of the anode electrode plate (1) and the cathode electrode plate (2), and the anode electrode plate (1) is inverted up and down by 180 degrees and overlapped. Above the cathode electrode plate (2), the fourth figure shows the gas using the anode electrode plate (1). The back surface of the gas flow surface (21) of the flow channel surface (11) and the cathode electrode plate (2), that is, the outer side of the anode electrode plate (1) and the cathode electrode plate (2), when the anode electrode plate (1) and When the outer sides of the cathode electrode plates (2) are superposed on each other, a barrier is formed in the place where the electrode plates are in contact with the electrode plates, and a non-contact vacancy (5) generates a liquid flow in which the channels provide a coolant, that is, a so-called coolant flow path. (6) This is also the reason why the lateral gas flow path is designed as the shape of the arrow cluster, that is, the grid-like space generated by laminating the anode electrode plate (1) and the cathode electrode plate (2) can be used as cooling. In addition, the coolant flow field is expected to reach the maximum area to improve the cooling effect, and the contact point must also be enough to withstand the pressure of the fuel cell compression assembly, so the anode electrode plate (1) and the cathode electrode Metal bipolar plates such as plates (2) have a flexible and delicate design that can meet both cooling requirements and provide high weight power density. In addition, the anode electrode plate (1) and the cathode electrode plate (2) are at the center of both sides. Each of the departments is provided with a corresponding coolant entering the lane (16) to The coolant flows out of the manifold (17), the coolant entering the channel (16) and the coolant outflow channel (17) are in communication with the coolant channel (6) forming the void (5) to provide coolant ingress, and The coolant enters the manifold (16), and the coolant outflow manifold (17) is further provided with a coolant inlet support (161) and a coolant outlet support (171), respectively.
再者,請一併參閱第五圖所示,為本創作具優化氣體流道之雙極板結構其一較佳實施例之氣體岐道入口剖面示意圖,其中當陽極電極板(1)與陰極電極板(2)反轉相對疊合時,燃料氣體之氫氣係由氫氣入口端(13)進入,再經由一氫氣進氣歧道(19)與下方之陰極電極板(2)間的間隙進入陽極電極板(1)之氣體流道面(11),第五圖中之黑色箭頭所示之路徑即為燃料氣體之氫氣所行進之路線。 Furthermore, please refer to the fifth figure, which is a cross-sectional view of a gas channel inlet of a preferred embodiment of the bipolar plate structure with optimized gas flow path, wherein the anode electrode plate (1) and the cathode are shown. When the electrode plate (2) is reversely superposed, the hydrogen of the fuel gas enters from the hydrogen inlet end (13) and enters through the gap between the hydrogen inlet manifold (19) and the cathode electrode plate (2) below. The gas flow path surface (11) of the anode electrode plate (1), and the path indicated by the black arrow in the fifth figure, is the route traveled by the hydrogen gas of the fuel gas.
此外,陽極電極板(1)與陰極電極板(2)係由金屬材質所製成,最佳之金屬材質係為不鏽鋼板,板材厚度係介於0.1mm~0.2mm之間,最佳係為0.15mm,而陽極電極板(1)與陰極電極板(2)等金屬雙極板的總面積係為202.7cm2,流道伸度係為0.5mm,流道寬度 係為1mm,總反應面積係為132cm2。 In addition, the anode electrode plate (1) and the cathode electrode plate (2) are made of a metal material, and the best metal material is a stainless steel plate, and the thickness of the plate is between 0.1 mm and 0.2 mm, and the optimum system is 0.15mm, and the total area of the metal bipolar plates such as the anode electrode plate (1) and the cathode electrode plate (2) is 202.7 cm 2 , and the flow channel elongation is 0.5 mm, and the flow path width is The system was 1 mm and the total reaction area was 132 cm2.
再者,陽極電極板(1)與陰極電極板(2)之一側係各進一步設置有一第一快速接頭(18)與第二快速接頭(26),以提供量測電壓與電流使用。 Furthermore, one side of the anode electrode plate (1) and the cathode electrode plate (2) are further provided with a first quick connector (18) and a second quick connector (26) to provide measurement voltage and current usage.
此外,請再參閱第六圖及第七圖所示,為本創作具優化氣體流道之雙極板結構其一較佳實施例之燃料電池單元堆疊示意圖,其中本創作係進一步提供一種燃料電池,燃料電池係由複數個燃料電池單元(7)串接而成,其中燃料電池單元(7)係包括一習知之薄膜電極組(71)、至少兩組以一陽極電極板(1)與一陰極電極板(2)反轉相對疊合之迴流凹槽雙極板(72),以及至少二個密封件(73),薄膜電極組(71)之二側係分別依序設置一個密封件(73)與一組迴流凹槽雙極板(72),陽極電極板(1)與陰極電極板(2)係取自上述之具優化氣體流道之雙極板結構;接續請參閱第八圖,為本創作具優化氣體流道之雙極板結構其一較佳實施例之燃料電池單元剖面示意圖,此為氧氣入口端(23)之部分,陽極電極板(1)與陰極電極板(2)疊合後之迴流凹槽雙極板(72),具有供氣體流通之迴流凹槽,即為一氫氣流道(3)及一氧氣流道(4),箭號即為表示氧氣從入口端進入後的流動方向,而密封件(73)則會完整密合,以防止氣體洩漏。 In addition, please refer to the sixth and seventh figures, which are schematic diagrams of fuel cell unit stacking according to a preferred embodiment of the bipolar plate structure with optimized gas flow path, wherein the present invention further provides a fuel cell. The fuel cell is formed by a plurality of fuel cell units (7) connected in series, wherein the fuel cell unit (7) comprises a conventional membrane electrode assembly (71), at least two groups of an anode electrode plate (1) and a The cathode electrode plate (2) reverses the oppositely laminated return groove bipolar plate (72), and at least two sealing members (73), and the two sides of the film electrode group (71) are respectively provided with a sealing member ( 73) with a set of recirculating groove bipolar plates (72), the anode electrode plates (1) and the cathode electrode plates (2) are taken from the above-mentioned bipolar plate structure with optimized gas flow paths; For the purpose of creating a bipolar plate structure with optimized gas flow path, a cross-sectional view of a fuel cell unit of the preferred embodiment, which is a portion of the oxygen inlet end (23), an anode electrode plate (1) and a cathode electrode plate (2) The laminated back-flow bipolar plate (72) has a return groove for gas circulation, that is, a Flow channel (3) and an oxygen flow channel (4), that is, an arrow indicates the flow direction of oxygen into the inlet end and the sealing member (73) will complete adhesion to prevent gas leakage.
根據上述之具優化氣體流道之雙極板結構於實際實施時,首先,本創作之陽極電極板(1)與陰極電極板(2)係以金屬材質製成,最佳之金屬材質係為不鏽鋼板,不鏽鋼板之板材厚度係介於0.1mm~0.2mm之間,最佳係為0.15mm,總面積係為202.7cm2,流道伸度係為0.5mm,流道寬度係為1mm,總反應面積係為132cm2,使用之加工方式係利用沖壓成型壓出所要的氣體流道;實際應用之燃料電池係將複數個燃料電池單元(7)串接,以形成一燃料電池,獲得足夠發電功率,於燃料電池單元(7)中,陽極電極板(1) 與陰極電極板(2)係反轉相對疊合,而互相貼合之陽極電極板(1)的氣體流道面(11)與陰極電極板(2)的氣體流道面(21)係形成供氣體流通之迴流凹槽,係為一氫氣流道(3)及一氧氣流道(4),亦交錯形成複數個空缺(5),而空缺(5)係形成供冷卻劑流通之冷卻劑流道(6),亦即利用陽極電極板(1)之氣體流道面(11)與陰極電極板(2)之氣體流道面(21)的背面,也就是陽極電極板(1)與陰極電極板(2)的外側,當陽極電極板(1)與陰極電極板(2)的外側互相疊合時,電極板與電極板接觸的地方會產生阻隔,非接觸的空缺(5)則產生通道提供冷卻劑之液體流動,即是所謂的冷卻劑流道(6),此亦是將橫向氣體流道設計為箭簇形狀之理由,也就是陽極電極板(1)與陰極電極板(2)疊合後產生的柵格狀空間可以善加運用成為冷卻劑流通的通道,而冷卻劑流場希望盡可能達到最大面積來提升冷卻效果,同時接點處也必須夠多以承受燃料電池壓迫組裝的壓力,因此陽極電極板(1)與陰極電極板(2)等金屬雙極板係具有靈活與細膩的設計,可同時滿足冷卻需求與提供較高的重量功率密度;在陽極電極板(1)係具有6條氣體流道,亦即除最上端之第一氣體流道(111)與最下端之第二氣體流道(112),位於第一氣體流道(111)與第二氣體流道(112)間共有4條第三氣體流道(113),而第一氣體流道(111)、第二氣體流道(112),以及第三氣體流道(113)係具有相同之總長度,以求每條氣體流道之阻力皆相近;在陰極電極板(2)係具有11條氣體流道,亦即除最上端之第四氣體流道(211)最下端之第五氣體流道(212),位於第四氣體流道(211)與第五氣體流道(212)共有9條第六氣體流道(213),而第四氣體流道(211)、第五氣體流道(212),以及第六氣體流道(213)係具有相同之總長度,以求每條氣體流道之阻力皆相近;此外,本創作具優化氣體流道之雙極板結構之陽極電極板(1)與陰極電極板(2)係可結合一習知之薄膜電極組(71)以及密封件(73)而組 成一燃料電池單元(7),其中陽極電極板(1)與陰極電極板(2)板係先反轉相對疊合以形成迴流凹槽雙極板(72),係具有供氣體流通之氫氣流道(3)與氧氣流道(4),於薄膜電極組(71)之二側端依序設置一個密封件(73)與一組迴流凹槽雙極板(72),藉由密封件(73)避免氣體洩漏,而複數個燃料電池單元(7)串接即可形成一燃料電池。 According to the above-mentioned bipolar plate structure with optimized gas flow path, in practice, first, the anode electrode plate (1) and the cathode electrode plate (2) of the present invention are made of metal material, and the best metal material is The thickness of stainless steel plate and stainless steel plate is between 0.1mm~0.2mm, the best system is 0.15mm, the total area is 202.7cm2, the flow channel elongation is 0.5mm, and the flow channel width is 1mm. The reaction area is 132 cm2, and the processing method is to press out the desired gas flow path by press forming; the practical application of the fuel cell is to connect a plurality of fuel cell units (7) in series to form a fuel cell to obtain sufficient power generation. In the fuel cell unit (7), the anode electrode plate (1) The cathode electrode plate (2) is reversely overlapped, and the gas flow path surface (11) of the anode electrode plate (1) and the gas flow path surface (21) of the cathode electrode plate (2) are formed. The return groove for gas circulation is a hydrogen flow channel (3) and an oxygen flow channel (4), which are also interlaced to form a plurality of vacancies (5), and the vacancy (5) forms a coolant for coolant circulation. The flow channel (6), that is, the gas flow channel surface (11) of the anode electrode plate (1) and the gas flow channel surface (21) of the cathode electrode plate (2), that is, the anode electrode plate (1) and On the outer side of the cathode electrode plate (2), when the outer sides of the anode electrode plate (1) and the cathode electrode plate (2) overlap each other, a barrier is formed in the place where the electrode plate contacts the electrode plate, and a non-contact vacancy (5) The channel provides a liquid flow of the coolant, which is the so-called coolant flow path (6), which is also the reason why the lateral gas flow path is designed as an arrow cluster shape, that is, the anode electrode plate (1) and the cathode electrode plate ( 2) The grid-like space generated after the superposition can be used as a passage for the coolant to flow, and the coolant flow field is expected to reach the maximum area as much as possible to improve the cooling effect. At the same time, the contact point must also be enough to withstand the pressure of the fuel cell compression assembly. Therefore, the metal bipolar plate system such as the anode electrode plate (1) and the cathode electrode plate (2) has a flexible and delicate design, which can simultaneously meet the cooling demand and Providing a higher weight power density; the anode electrode plate (1) has six gas flow paths, that is, the first gas flow path (111) except the uppermost end and the second gas flow path (112) at the lowermost end, There are four third gas flow paths (113) between the first gas flow path (111) and the second gas flow path (112), and the first gas flow path (111) and the second gas flow path (112), And the third gas flow path (113) has the same total length, so that the resistance of each gas flow path is similar; the cathode electrode plate (2) has 11 gas flow paths, that is, the uppermost The fifth gas flow path (212) at the lowermost end of the four gas flow path (211) has nine sixth gas flow paths (213) in the fourth gas flow path (211) and the fifth gas flow path (212), and The fourth gas flow path (211), the fifth gas flow path (212), and the sixth gas flow path (213) have the same total length, so that the resistance of each gas flow path is Similarly, the anode electrode plate (1) and the cathode electrode plate (2) of the bipolar plate structure with optimized gas flow path can be combined with a conventional film electrode assembly (71) and a sealing member (73). Forming a fuel cell unit (7), wherein the anode electrode plate (1) and the cathode electrode plate (2) plate are first reversely overlapped to form a recirculating groove bipolar plate (72) having a hydrogen flow for gas circulation The channel (3) and the oxygen flow channel (4) are sequentially provided with a sealing member (73) and a set of recirculating groove bipolar plates (72) on both side ends of the membrane electrode assembly (71), by means of a seal ( 73) Avoid gas leakage, and a plurality of fuel cell units (7) are connected in series to form a fuel cell.
由上述之實施說明可知,本創作具優化氣體流道之雙極板結構與現有技術相較之下,本創作具有以下優點: It can be seen from the above description that the present invention has the following advantages in comparison with the prior art in the bipolar plate structure with optimized gas flow path:
1.本創作之具優化氣體流道之雙極板結構係藉由陽極電極板蜿蜒之第一氣體流道、第二氣體流道與第三氣體流道,以及陰極電極板蜿蜒之第四氣體流道、第五氣體流道與第六氣體流道所形成之大量筆直直線形狀與箭簇形狀之分隔區塊,除有助於維持電池結構強度,燃料氣體之氫氣與氧化劑之氧氣可均勻且無阻力地分佈於順暢筆直之氣體流道面,確保反應氣體有足夠的濃度進入薄膜電極組,以便能進行燃料電池之充分反應,進而提升燃料電池之產電效能。 1. The bipolar plate structure of the optimized gas flow path is composed of a first gas flow channel, a second gas flow path and a third gas flow path of the anode electrode plate, and a cathode electrode plate The plurality of straight straight lines and the shape of the arrow cluster formed by the four gas flow channels, the fifth gas flow path and the sixth gas flow path, in addition to helping to maintain the structural strength of the battery, the hydrogen of the fuel gas and the oxygen of the oxidant can be It is evenly and non-resistively distributed on the smooth and straight gas flow path surface, ensuring that the reaction gas has a sufficient concentration to enter the membrane electrode group, so that the fuel cell can fully react, thereby improving the power generation efficiency of the fuel cell.
2.本創作之具優化氣體流道之雙極板結構係藉由將金屬材質之不鏽鋼板沖壓加工成型方式形成燃料氣體流道,由於不鏽鋼板材具有厚度薄與質量輕等優點,不僅可以縮減燃料電池之體積,亦能達到輕量化之需求,且不鏽鋼板成型後會經過鍍膜處理或氣體熱處理等表面改質動作,藉以改善金屬板之耐腐蝕性能與增加機械強度,達到提升電池使用壽命之目的。 2. The bipolar plate structure with optimized gas flow path is formed by forming a fuel gas flow path by forming a stainless steel plate of metal material. Since the stainless steel plate has the advantages of thin thickness and light weight, the fuel can be reduced. The volume of the battery can also meet the demand of light weight, and the stainless steel plate will undergo surface modification operations such as coating treatment or gas heat treatment after molding, thereby improving the corrosion resistance of the metal plate and increasing the mechanical strength, thereby achieving the purpose of improving the service life of the battery. .
3.本創作之具優化氣體流道之雙極板結構係藉由陽極電極板與陰極電極板反轉相對貼合之面形成供氣體流通之氫氣流道及氧氣流道,亦交錯形成之空缺,即為冷卻劑流道,因此接點處必須足夠多以承受燃料電池壓迫組裝之壓力,且藉由氣體流道匯流設計,增大在陽極電極板之氣體流道面與陰極電極板之氣體流道面背 面所形成之冷卻劑流道的最大面積,同時滿足冷卻需求與提供較高重量功率密度之優點。 3. The bipolar plate structure with optimized gas flow path of the present invention forms a hydrogen flow channel and an oxygen flow channel for gas circulation by reversing the opposite surface of the anode electrode plate and the cathode electrode plate, and is also formed by vacancies. It is the coolant flow channel, so the joint must be enough to withstand the pressure of the fuel cell compression assembly, and the gas flow path surface of the anode electrode plate and the cathode electrode plate are increased by the gas flow channel confluence design. Runway face back The maximum area of the coolant flow path formed by the face meets both the cooling demand and the advantage of providing a higher weight power density.
綜上所述,本創作具優化氣體流道之雙極板結構,的確能藉由上述所揭露之實施例,達到所預期之使用功效,且本創作亦未曾公開於申請前,誠已完全符合專利法之規定與要求。爰依法提出新型專利之申請,懇請惠予審查,並賜准專利,則實感德便。 In summary, the bipolar plate structure with optimized gas flow path can achieve the intended use efficiency by the above disclosed embodiments, and the creation has not been disclosed before the application, and has been fully met. The provisions and requirements of the Patent Law. If you apply for a new type of patent in accordance with the law, you are welcome to review it and grant a patent.
惟,上述所揭之圖示及說明,僅為本創作之較佳實施例,非為限定本創作之保護範圍;大凡熟悉該項技藝之人士,其所依本創作之特徵範疇,所作之其它等效變化或修飾,皆應視為不脫離本創作之設計範疇。 However, the illustrations and descriptions disclosed above are only preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention; those who are familiar with the skill are otherwise characterized by the scope of the creation. Equivalent changes or modifications shall be considered as not departing from the design of this creation.
(1)‧‧‧陽極電極板 (1)‧‧‧Anode electrode plate
(11)‧‧‧氣體流道面 (11) ‧‧‧ gas flow surface
(111)‧‧‧第一氣體流道 (111)‧‧‧First gas flow path
(112)‧‧‧第二氣體流道 (112)‧‧‧Second gas flow path
(1121)‧‧‧第三子流道 (1121)‧‧‧ Third sub-channel
(11211)‧‧‧第五孫流道 (11211) ‧ ‧ Fifth Sun Runner
(11212)‧‧‧第六孫流道 (11212) ‧‧‧ Sixth Sun Runner
(1122)‧‧‧第四子流道 (1122) ‧ ‧ fourth sub-runner
(11221)‧‧‧第七孫流道 (11221) ‧‧ ‧ Seventh Sun Runner
(11222)‧‧‧第八孫流道 (11222) ‧ ‧ Eighth Sun Runner
(113)‧‧‧第三氣體流道 (113)‧‧‧ Third gas flow path
(1131)‧‧‧第一子流道 (1131)‧‧‧First sub-channel
(11311)‧‧‧第一孫流道 (11311) ‧‧‧First Sun Runner
(11312)‧‧‧第二孫流道 (11312) ‧‧‧Second Sun Runner
(1132)‧‧‧第二子流道 (1132) ‧‧‧Second sub-channel
(11321)‧‧‧第三孫流道 (11321) ‧ ‧ Third Sun Runner
(11322)‧‧‧第四孫流道 (11322) ‧ ‧ Fourth Sun Runner
(114)‧‧‧彎曲 (114)‧‧‧Bend
(12)‧‧‧溝槽 (12) ‧‧‧ trench
(13)‧‧‧氫氣入口端 (13) ‧‧‧ Hydrogen inlet end
(14)‧‧‧氫氣出口端 (14) ‧‧‧ Hydrogen outlet
(15)‧‧‧尖端 (15) ‧ ‧ cutting edge
(16)‧‧‧冷卻劑進入歧道 (16) ‧‧‧ coolant enters the lane
(161)‧‧‧冷卻劑入口支撐 (161) ‧‧‧ coolant inlet support
(17)‧‧‧冷卻劑流出歧道 (17) ‧‧‧ coolant outflow manifold
(171)‧‧‧冷卻劑出口支撐 (171) ‧‧‧ coolant outlet support
(18)‧‧‧第一快速接頭 (18)‧‧‧First quick connector
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