201138200 六、發明說明： 【發明所屬之技術領域】 本發明係關於燃料電池裝置， 直接甲醇燃料電池裝置。 特別係關於一種具磁力式微幫浦的 【先前技術】 中華民國發明專利案公告號1232〇()5「積層整合式直接甲醇燃料電 . 池的製造方法及其積層整合式直接甲賴料電池」，乃減-種積層整 • 合式直接甲醇燃料電池的製造方法包括下列步驟：使用印刷電路板的 材料材質’製作成型出流道槽/溶液槽層；製作質傳電解質層；利用印 刷電路板的製程’製作控制電路層；將分別所製作出來的流道槽/溶液 槽層、質傳電解質層、以及控制電路層等各層，接合成積層整合式直 接甲醇燃料電池。 美國專利早期公報US2GG4/_2964A1「直接甲醇燃料電池系統 (Direct Methanol Fuel Cell System)」，乃揭露一種直接使用甲醇溶 _ 液的燃料電池系統’其設置燃料供應單元(Fuel s_y 用來輸 送曱醇溶液，且輸送的手段係利用幫浦。 本發明發明人有鑑於上述相關習知技藝對於小型化甚至於微型化 的直接甲醇燃料電池的實現’乃仍有未逮之處，因此發明人亟思改良， 而發明一種特別適用於小型化甚至於微型化直接甲醇燃料電池的磁力 式微幫浦，以及發明改良出一種具磁力式微幫浦的小型化甚至於微型 化直接甲醇燃料電池。201138200 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a fuel cell device, a direct methanol fuel cell device. In particular, it relates to a [previous technique] with a magnetic micro-pull. The Republic of China invention patent case No. 1232〇() 5 "Laminar integrated direct methanol fuel electricity. The manufacturing method of the pool and its laminated integrated direct-source battery" The method for manufacturing a combined direct methanol fuel cell comprises the steps of: forming a flow channel groove/solution groove layer using a material material of a printed circuit board; fabricating a mass transfer electrolyte layer; using a printed circuit board The process 'produces a control circuit layer; and each of the flow channel groove/solution groove layer, the mass transfer electrolyte layer, and the control circuit layer, which are separately produced, is joined to form a laminated integrated direct methanol fuel cell. US Patent Publication No. 2GG4/_2964A1, "Direct Methanol Fuel Cell System", discloses a fuel cell system directly using methanol solution, which is provided with a fuel supply unit (Fuel s_y is used to transport a sterol solution). And the means of transporting utilizes the pump. The inventors of the present invention have in view of the above-mentioned related art that the realization of miniaturization or even miniaturization of a direct methanol fuel cell is still unresolved, so the inventor has improved Invented a magnetic micro-pump that is particularly suitable for miniaturization or even miniaturization of direct methanol fuel cells, and the invention has improved a miniaturized or even miniaturized direct methanol fuel cell with a magnetic micro-pump.
[SI 3 201138200 【發明内容】 本發明提供一種直接甲醇燃料電池與應用在該直接甲醇燃料電池 的磁力式微幫浦，讓小型化甚至於微型化的直接曱醇燃料電池乃更容 易實現。 為達成本發明上述目的，本發明提供一種應用於直接甲醇燃料電 池的磁力錢幫浦，包括：-馬祕祕轉盤；—絲係用於 固設該馬達；-第_板體係堆叠在該底板上，以聽設[磁性液體[SI 3 201138200] SUMMARY OF THE INVENTION The present invention provides a direct methanol fuel cell and a magnetic micro-pump applied to the direct methanol fuel cell, which makes it easier to realize miniaturization or even miniaturization of a direct methanol fuel cell. In order to achieve the above object of the present invention, the present invention provides a magnetic money pump applied to a direct methanol fuel cell, comprising: - a horse secret carousel; - a wire system for fixing the motor; - a _ plate system stacked on the bottom plate On, to listen to [magnetic liquid
流道，其中該磁性液體流道係用於密封一磁性液體；一第二板體係堆 疊在-防水馳上’錢係設置—_流道；該防水薄膜係央置於 该第-板體與料二板體之間；—第三碰係堆疊在鱗二板體上， 以及係用於收容該轉盤，以及係設置—人口與__出口，其中該入口的 -端與該出Π的-端係分別密封相通於該燃料流道的兩末端，以及一 甲醇溶液係自該人口流人而流經贿猶道然後由該出口流出；該轉 盤係設置至少-個以上的磁性树，其中該些磁性元件係用於磁吸附 -亥磁1±液體’ ffij使仔關賴迫顺部份_流道進碰迫到位於該 燃料流道内的該曱醇溶液。 再者’本發明提供-種包含如上述之磁力式微幫浦的直接甲醇燃 料電池。括.4磁力式微幫浦、一陽極流道板、一第一集電片'一 膜電極組、-第二集電片、—陰極流道板係自上而下堆疊一起。 為使貴審查委員對本發明之構造、特徵及其使用功效有更深一 層的<識與瞭解’⑵舉較佳之可行實施例並配合圖式詳細說明如下： 201138200 【實施方式】 第一圖顯示本發明直接甲醇燃料電池的立體圖，第二圖顯示本發明 直接甲醇燃料電池的分解圖，第三圖顯示本發明應用於直接甲醇燃料電 池的磁力式微幫浦的立體圖，以及第四圖顯示本發明應用於直接甲醇燃 料電池的磁力式微幫浦的分解圖。本發明直接甲醇燃料電池1〇主要利 用磁力式微幫浦20，來做為推動甲醇溶液流動的動力源，由於本發明 磁力式微幫浦20在結構特徵上的特點，使得直接甲醇燃料電池1〇能夠 得以更為輕易地實現小型化直接甲醇燃料電池，甚至於小型化直接甲醇 燃料電池。茲先詳細說明本發明的磁力式微幫浦2〇 ,磁力式微幫浦2〇 乃包括：馬達20卜底板202、第一板體203、防水薄膜204、第二板體 205、第三板體2〇6以及轉盤207，茲分別說明如下内文。 馬達201係用於帶動轉盤2〇7的轉動，馬達201的轉轴2〇la乃穿 貫於第一板體203、防水薄膜204、第二板體204與第三板體206，且 轉軸201a的末端係與轉盤2〇7固接。馬達2〇1乃可固設在底板2〇2上， 而馬達201例如可採用低功率直流馬達。 請配合參見第五A圖，第一板體203係堆疊在底板202上，以及設 置有磁性液體流道2〇3a，而磁性液體流道203a係用於密封磁性液體 2〇3b’密封磁性液體203b當受到轉盤207的磁性元件207a的磁吸力影 響時’而使得受到磁吸力影響的部分磁性液體203b乃朝向防水薄膜204 移動’而壓迫到防水薄膜204。第五B圖顯示第一板體203的具體實施 例結構圖’第一板體203係由三片片體2031、2032、2033堆疊密接而 成’其中位於最上層的片體2031與最下層的片體2033可採用為薄膜， ts] 5 201138200 例如為聚二甲基魏綠祕祕ysil_e，pDMs)薄膜，層的 片體2032乃係設置有磁性液體流道卿，磁性液體流道施例如可 &仃呈圓周祕空溝躺結構’而這條鏤空溝渠可用來容納磁性液體 職。片體觀可採用為厚度較厚的薄聪，例如厚度較厚的蘭薄膜， 或是其它材質。 請配合參見第六圖’第二板體2〇5係堆疊在防水薄膜2〇4上，以及 叹置有燃料流道205a。第二板體2〇5的燃料流道2〇5a力是面對於防水 • _ 204。燃料流道205a例如可採行呈半圓弧狀溝渠的結構，而這條 溝渠可用來流通甲醇溶液1醇溶液自祕流道·的末端獅流 入，而自末端205c流出。 防水薄膜204係夾置於第一板體2〇3與第二板體2〇5之間。由於防 水薄膜204緊密覆蓋住第二板體205的燃料流道2〇5a，因此位於燃料 流道205a的甲醇溶液不會外滲。防水薄膜2〇4可採用薄膜，例如pDMS _ 薄膜，或是其它勒性防水材質。 鲁請配合參見第七圖，第三板體2〇6係堆疊在第二板體2〇5上，以及 係用於收容轉盤207。再者，第三板體206可進一步設置入口 2〇6a與 出口 206b，而入口 206a的一末端可連接於燃料槽30(請參見第八圖）， 其另一末端則密接於燃料流道205a的末端205b。出口 206b的一末端 可連接於陽極流道板101的入口 l〇la，其另一末端則密接於燃料流道 205a的末端205c。 再者’入口 206a與出口 206b可改採設置在第二板體205上，入口 206a與出口 206b分別連接於末端2〇5b與205c。 201138200 請配合參見第七圖，轉盤207係設置至少一個以上的磁性元件 207a，該些磁性元件207a係用於磁吸附磁性液體2〇3b ^磁性元件2〇?a 可採用永久磁鐵，且該些磁性元件2〇7a係均勻分佈設置在轉盤2〇7上。 上述底板202、第一板體203、防水薄膜204、第二板體205、以及 第三板體206可採行積層壓合技術手段而壓成密接一起，或是採行螺合 手段而螺緊一起。底板202的材質例如可選擇壓克力、金屬、硬質塑膠、 玻璃纖維的其令一種《第二板體2〇5與第三板體206的材質例如可選擇 壓克力、無磁性金屬、硬質塑膠、玻璃纖維的其中一種。第一板體2〇3、 防水薄膜204與第二板體205的材質選用要考慮能夠讓磁力通過的材 質。 上述設置於第一板體203的磁性液體流道203a的數量可採行係至 少一個以上。上述設置於第二板體205的燃料流道2〇5a的數量可採行 係至少一個以上。上述收容於第三板體206的轉盤207的數量可採行係 至少一個以上。上述馬達201的數量可採行係至少一個以上。 接著詳細說明本發明的直接曱醇燃料電池10，直接甲醇燃料電池 1〇乃包括：磁力式微幫浦20、陽極流道板1(U、第一集電片103、膜電 極組105、第二集電片107以及陰極流道板1〇9，上述該些組件係自上 而下堆疊一起。為了易於了解本發明起見’我們定義了模組1〇a,而模 組l〇a乃包括：陽極流道板1〇卜第一集電片1〇3、膜電極組105、第 二集電片107以及陰極流道板1〇9。茲分別詳細說明該些組件，如下内 文0 直接曱醇燃料電池10所使用的磁力式微幫浦20已在上文揭露，因 201138200 此不再重述。 陽極流道板101乃設置有陽極流道1〇lc、入口丨〇la以及出口 101b。甲醇溶液自入口 l〇la流入，而流經陽極流道1〇lc，最後自出口 101b流出。陽極流道板ιοί可採行習知相關技藝而製作。 第一集電片103與第二集電片107可採行習知相關技藝而製作，例 如採用具複數個鏤空孔動的網絡結構的金屬片。 膜電極組105可直接採用習知具質子交換膜的膜電極組，而膜電極 組105的設置數量並不以一個為揭限。 陰極流道板109乃設置有複數個通孔i〇9a，以讓空氣可流入至瞑 電極組105的陰極。陰極流道板1〇9可採行習知相關技藝而製作。再者， 陰極流道板109係可被具陰極流道之蓋板所取代。 上述的磁力式微幫浦20、陽極流道板1〇1 '第一集電片1〇3、膜電 極組105、第二集電片107以及陰極流道板1〇9，可採行積層壓合技術 手段而壓成密接一起，或是採行螺合手段而螺緊一起。 請參見第八圖，燃料槽30的曱醇溶液40通過入口 206a，而流入 至磁力式微幫浦20的内部。磁力式微幫浦2〇的馬達2〇1轉動而帶動轉 盤207的轉動。轉動中的轉盤207上的磁性元件2〇7a，乃沿著預定方 向且時間間隔地磁吸附磁性液體207b，而使得防水薄膜204沿著該預 定方向壓迫到部份燃料流道205a，進而壓迫到位於燃料流道内205a的 甲醇溶液，因此推動甲醇溶液的流動。位於磁力式微幫浦2〇内部的甲 醇溶液自出口 206b流出’而流入於陽極流道板ιοί的入口 1〇la，然後 流經陽極流道l〇lc，並且自出口 1〇lb流出，最後流回燃料槽3〇。 201138200 本發明的直接甲醇燃料電池由於使用特別設計的磁力式微幫浦，因 此使得小型化甚至於微型化的直接甲醇燃料電池乃更容易實現，此即為 本發明進步所在。 惟以上所述者，僅為本發明之較佳實施例，當不能用以限定本發明 可實施之範圍’凡熟悉於本技藝人士所簡可作變化祕飾，皆應視為不恃離 本發明之實質内容》 【圖式簡單說明】 第一圖顯示本發明直接甲醇燃料電池的立體圖。 第二圖顯示本發明直接甲醇燃料電池的分解圖。 第二圖顯不本發明應用於直接曱醇燃料電池的磁力式微幫浦的立體 圖。 第四圖顯示本發明應用於直接甲醇燃料電池的磁力式微幫浦的分解 圖。 第五A圖顯示本發明磁力式微幫浦的第—板體的結構圖。 第五B關示本發明第五A圖第_板體的具體實施例結構圓。 第六圖顯示本發明磁力式微幫浦的第二板體的結構分解圖。 第七圖顯示本發明磁力式微幫浦的第三板體的結翻。 第八圖顯示本發明直接甲醇燃料電池的應用狀態示意圖。 【主要元件符號說明】 10 直接甲醇燃料電池 !〇a 模組 9 rs] 201138200a flow channel, wherein the magnetic liquid flow channel is used for sealing a magnetic liquid; a second plate system is stacked on the water-saving device, and the waterproof film is placed on the first plate body and Between the two plates; the third contact is stacked on the scaly plate, and is used to house the turntable, and the system is set up - the population and the __ exit, wherein the end of the entrance and the exit - The end portions are respectively sealed at both ends of the fuel flow passage, and a methanol solution flows from the population and flows through the bribe and then flows out from the outlet; the turntable is provided with at least one or more magnetic trees, wherein the These magnetic components are used for magnetic adsorption - the magnetic 1 FF ij ij ij ij ī ī ī ī ī ī ī ī ī ī ī ī ī ī ī ī ī ī ī ī ī ī ī Further, the present invention provides a direct methanol fuel cell comprising a magnetic micro-pull as described above. The magnetic magnetic micro-pump, an anode flow channel plate, a first current collecting piece, a second electrode collecting piece, and a cathode flow channel plate are stacked from top to bottom. In order to enable the reviewing committee to have a deeper understanding of the structure, features and efficacy of the present invention, (2) a preferred embodiment is described in detail with reference to the following figures: 201138200 [Embodiment] The first figure shows the present A perspective view of a direct methanol fuel cell of the present invention, a second view showing an exploded view of the direct methanol fuel cell of the present invention, a third view showing a magnetic micro-pump of the present invention applied to a direct methanol fuel cell, and a fourth view showing the application of the present invention An exploded view of a magnetic micro-pump for a direct methanol fuel cell. The direct methanol fuel cell of the present invention mainly utilizes a magnetic micro-pump 20 as a power source for propelling the flow of the methanol solution. Due to the structural characteristics of the magnetic micro-pump 20 of the present invention, the direct methanol fuel cell can be It is easier to achieve miniaturized direct methanol fuel cells, even miniaturized direct methanol fuel cells. First, the magnetic micro-pull 2 本 of the present invention will be described in detail. The magnetic micro-pull 2 〇 includes a motor 20, a bottom plate 202, a first plate 203, a waterproof film 204, a second plate 205, and a third plate 2. 〇6 and turntable 207, respectively, explain the following text. The motor 201 is used to drive the rotation of the turntable 2〇7, and the rotating shaft 2〇1a of the motor 201 passes through the first plate body 203, the waterproof film 204, the second plate body 204 and the third plate body 206, and the rotating shaft 201a The end of the system is fixed to the turntable 2〇7. The motor 2〇1 can be fixed to the bottom plate 2〇2, and the motor 201 can be, for example, a low-power DC motor. Referring to FIG. 5A, the first plate body 203 is stacked on the bottom plate 202, and the magnetic liquid flow path 2〇3a is provided, and the magnetic liquid flow path 203a is used for sealing the magnetic liquid 2〇3b' sealing magnetic liquid. When 203b is affected by the magnetic attraction force of the magnetic member 207a of the turntable 207, the portion of the magnetic liquid 203b affected by the magnetic attraction is moved toward the waterproof film 204 to be pressed against the waterproof film 204. FIG. 5B is a structural view showing a first embodiment of the first plate body 203. The first plate body 203 is formed by stacking three pieces of the pieces 2031, 2032, and 2033, and the uppermost layer is 2031 and the lowermost layer. The sheet body 2033 can be used as a film, ts] 5 201138200, for example, a polydimethyl phthalocyanine ysil_e, pDMs) film, the layer of the sheet 2032 is provided with a magnetic liquid flow channel, the magnetic liquid flow channel can be applied, for example. & 仃 is a circular secret ditch structure' and this hollow ditch can be used to accommodate magnetic liquid jobs. The sheet view may be a thin thicker, such as a thicker blue film, or other materials. Please refer to the sixth figure' second plate body 2〇5 series stacked on the waterproof film 2〇4, and the fuel flow path 205a is slanted. The fuel flow path 2〇5a of the second plate body 2〇5 is surface-to-waterproof _204. The fuel flow path 205a may, for example, adopt a structure of a semi-arc-shaped ditch, and this ditch can be used to flow the methanol solution 1 alcohol solution from the end lion of the secret flow path, and flow out from the end 205c. The waterproof film 204 is interposed between the first plate body 2〇3 and the second plate body 2〇5. Since the water-repellent film 204 closely covers the fuel flow path 2〇5a of the second plate body 205, the methanol solution located in the fuel flow path 205a is not extravasated. The waterproof film 2〇4 can be made of a film such as pDMS _ film or other waterproof material. Please refer to the seventh figure. The third plate body 2〇6 is stacked on the second plate body 2〇5, and is used to receive the turntable 207. Furthermore, the third plate 206 may further be provided with an inlet 2〇6a and an outlet 206b, and one end of the inlet 206a may be connected to the fuel tank 30 (please refer to the eighth diagram), and the other end thereof is in close contact with the fuel flow passage 205a. End 205b. One end of the outlet 206b may be connected to the inlet l〇la of the anode flow path plate 101, and the other end thereof is in close contact with the end 205c of the fuel flow path 205a. Further, the inlet 206a and the outlet 206b may be disposed on the second plate 205, and the inlet 206a and the outlet 206b are connected to the ends 2〇5b and 205c, respectively. 201138200 Please refer to the seventh figure, the turntable 207 is provided with at least one magnetic element 207a for magnetically adsorbing the magnetic liquid 2〇3b ^the magnetic element 2〇a can be a permanent magnet, and these The magnetic elements 2〇7a are evenly distributed on the turntable 2〇7. The bottom plate 202, the first plate body 203, the waterproof film 204, the second plate body 205, and the third plate body 206 may be pressed together by a lamination technique, or may be screwed by a screwing means. together. The material of the bottom plate 202 can be selected, for example, acrylic, metal, hard plastic, or glass fiber. The material of the second plate body 2〇5 and the third plate body 206 can be selected, for example, acrylic, non-magnetic metal, and hard. One of plastic and fiberglass. The material of the first plate body 2〇3, the waterproof film 204, and the second plate body 205 is selected to take into consideration the material that allows the magnetic force to pass. The number of the magnetic liquid flow paths 203a provided in the first plate body 203 may be at least one or more. The number of the fuel flow passages 2〇5a provided in the second plate body 205 may be at least one or more. The number of the turntables 207 housed in the third plate body 206 may be at least one or more. The number of motors 201 described above may be at least one or more. Next, the direct methanol fuel cell 10 of the present invention will be described in detail. The direct methanol fuel cell 1 includes a magnetic micro-pump 20, an anode flow channel plate 1 (U, a first current collecting tab 103, a membrane electrode assembly 105, and a second The collector sheet 107 and the cathode runner sheet 1〇9, the above components are stacked from top to bottom. For the sake of easy understanding of the present invention, 'we define the module 1〇a, and the module l〇a includes : The anode flow path plate 1 is the first current collecting piece 1〇3, the membrane electrode group 105, the second current collecting piece 107, and the cathode flow path plate 1〇9. The components are respectively described in detail, as follows: The magnetic micro-pump 20 used in the sterol fuel cell 10 has been disclosed above, and will not be repeated here because of 201138200. The anode flow path plate 101 is provided with an anode flow path 1〇lc, an inlet 丨〇la, and an outlet 101b. The methanol solution flows in from the inlet l〇la, flows through the anode flow channel 1〇lc, and finally flows out from the outlet 101b. The anode flow channel plate ιοί can be fabricated by conventional techniques. The first collector chip 103 and the second set The electric sheet 107 can be fabricated by using known related art, for example, using a plurality of hollow holes The metal film of the network structure. The membrane electrode assembly 105 can directly adopt a membrane electrode assembly having a proton exchange membrane, and the number of membrane electrode groups 105 is not limited to one. The cathode flow channel plate 109 is provided with a plurality of The through holes i 〇 9a are arranged to allow air to flow into the cathode of the 瞑 electrode group 105. The cathode flow path plates 1 〇 9 can be fabricated by conventional techniques. Further, the cathode flow path plate 109 can be provided with a cathode. The above-mentioned magnetic micro-pump 20, anode flow channel plate 1〇1 'first current collecting tab 1〇3, membrane electrode assembly 105, second current collecting sheet 107, and cathode flow channel plate 1 are replaced. 〇9, which can be pressed together by means of laminating and laminating techniques, or screwed together by means of screwing. Referring to the eighth figure, the sterol solution 40 of the fuel tank 30 flows through the inlet 206a. The inside of the magnetic micro-pump 20. The magnetic micro-push 2〇 motor 2〇1 rotates to drive the rotation of the turntable 207. The magnetic element 2〇7a on the rotating turntable 207 is magnetically adsorbed along a predetermined direction and at intervals. Magnetic liquid 207b, such that waterproof film 204 is along the predetermined direction Part of the fuel flow path 205a is forced to the methanol solution located in the fuel flow path 205a, thereby propelling the flow of the methanol solution. The methanol solution located inside the magnetic micro-pump 2〇 flows out from the outlet 206b and flows into the anode flow path. The inlet of the plate ιοί is 1〇la, then flows through the anode flow channel l〇lc, and flows out from the outlet 1〇lb, and finally flows back to the fuel tank 3〇. 201138200 The direct methanol fuel cell of the present invention uses a specially designed magnetic micro-help Therefore, it is easier to realize the miniaturization and even miniaturization of the direct methanol fuel cell, which is the improvement of the present invention. However, the above description is only a preferred embodiment of the present invention, and cannot be used to limit the present invention. The scope of the invention can be implemented. Anyone familiar with the skill of the art can make changes to the secrets of the present invention. The first figure shows the direct methanol fuel cell of the present invention. Stereo picture. The second figure shows an exploded view of the direct methanol fuel cell of the present invention. The second figure shows a perspective view of a magnetic micro-pump applied to a direct sterol fuel cell. The fourth figure shows an exploded view of the magnetic micro-pump applied to the direct methanol fuel cell of the present invention. Fig. 5A is a view showing the structure of the first plate of the magnetic micro-push of the present invention. The fifth B shows a structural circle of a specific embodiment of the first embodiment of the fifth embodiment of the present invention. Fig. 6 is a structural exploded view showing the second plate of the magnetic micro-push of the present invention. The seventh figure shows the knot of the third plate of the magnetic micro-push of the present invention. The eighth figure shows a schematic diagram of the application state of the direct methanol fuel cell of the present invention. [Main component symbol description] 10 Direct methanol fuel cell !〇a module 9 rs] 201138200
20 磁力式微幫浦 30 燃料槽 40 甲醇溶液 101 陽極流道板 101c 陽極流道 101a 入口 101b 出口 103 第一集電片 105 膜電極組 107 第二集電片 109 陰極流道板 109a 通孔 201 馬達 201a 轉軸 202 底板 203 第一板體 203a 磁性液體流道 203b 磁性液體 2031 ' 2032 、 2033 204 防水薄膜 205 第二板體 205a 燃料流道 片體 10 201138200 205b、205c 末端 206 第三板體 206a 入口 206b 出口 207 轉盤 207a磁性元件20 magnetic micro-pump 30 fuel tank 40 methanol solution 101 anode flow channel plate 101c anode flow channel 101a inlet 101b outlet 103 first collector tab 105 membrane electrode group 107 second collector tab 109 cathode runner plate 109a through hole 201 motor 201a Rotary shaft 202 Base plate 203 First plate body 203a Magnetic liquid flow path 203b Magnetic liquid 2031 '2032, 2033 204 Waterproof film 205 Second plate body 205a Fuel flow path piece 10 201138200 205b, 205c End 206 Third plate body 206a Entrance 206b Outlet 207 turntable 207a magnetic component