JP3295778B2 - Method for preventing moisture absorption of molten carbonate fuel cell - Google Patents
Method for preventing moisture absorption of molten carbonate fuel cellInfo
- Publication number
- JP3295778B2 JP3295778B2 JP22832799A JP22832799A JP3295778B2 JP 3295778 B2 JP3295778 B2 JP 3295778B2 JP 22832799 A JP22832799 A JP 22832799A JP 22832799 A JP22832799 A JP 22832799A JP 3295778 B2 JP3295778 B2 JP 3295778B2
- Authority
- JP
- Japan
- Prior art keywords
- stack
- fuel cell
- heat insulating
- gap
- insulating material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000446 fuel Substances 0.000 title claims description 25
- 238000010521 absorption reaction Methods 0.000 title claims description 14
- 238000000034 method Methods 0.000 title claims description 12
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 title claims description 11
- 239000011810 insulating material Substances 0.000 claims description 30
- 238000009434 installation Methods 0.000 claims description 18
- 239000007789 gas Substances 0.000 description 44
- 230000002093 peripheral effect Effects 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000012778 molding material Substances 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000003203 everyday effect Effects 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Fuel Cell (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は燃料の有する化学エ
ネルギーを直接電気エネルギーに変換させるエネルギー
部門で用いる溶融炭酸塩型燃料電池の吸湿防止方法に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for preventing moisture absorption of a molten carbonate fuel cell used in the energy sector, in which chemical energy of fuel is directly converted into electric energy.
【０００２】[0002]
【従来の技術】燃料電池のうち、溶融炭酸塩型燃料電池
は、電解質として溶融炭酸塩を多孔質物質にしみ込ませ
てなるタイル（電解質板）をカソード（酸素極）とアノ
ード（燃料極）の両電極で両面から挟み、カソード側に
酸化ガスを供給すると共にアノード側に燃料ガスを供給
することによりカソード側とアノード側で各々反応を行
わせて発電を行わせるようにしたものを１セルとし、各
セルをセパレータを介し多層に積層してスタックとする
ようにしてある。2. Description of the Related Art Among fuel cells, a molten carbonate type fuel cell includes a tile (electrolyte plate) formed by impregnating a molten carbonate with a porous material as an electrolyte, which comprises a cathode (oxygen electrode) and an anode (fuel electrode). One cell is sandwiched from both sides by both electrodes, and an oxidizing gas is supplied to the cathode side and a fuel gas is supplied to the anode side to cause a reaction on the cathode side and the anode side to generate power, thereby generating power. Each cell is stacked in multiple layers via a separator to form a stack.
【０００３】上記スタックとした溶融炭酸塩型燃料電池
は、各セルごとに電池性能が良好に維持されることが必
要であり、電極反応部においてカソード及びアノードの
各電極とタイルとセパレータとが一様な圧力分布で接触
していること、内部マニホールド型の燃料電池にあって
は、周辺部のウェットシール部のシール性が維持されて
いること、運転中におけるスタックの高さ変化に対して
追従性があること、等が要求される。そのため、燃料電
池全体を一定の締付力で均一に締め付けることが必要で
ある。[0003] In the molten carbonate fuel cell formed as a stack, it is necessary for each cell to maintain good cell performance. In the electrode reaction section, each of the cathode and anode electrodes, the tile, and the separator are integrated. Contact with a uniform pressure distribution, in the case of internal manifold type fuel cells, the sealing performance of the peripheral wet seal is maintained, and it follows changes in the stack height during operation Is required. Therefore, it is necessary to uniformly tighten the entire fuel cell with a fixed tightening force.
【０００４】かかる必要性を満たすために、図２に一例
を示す如く、下部ホルダー３上に燃料電池スタック１を
載置し、該スタック１上に上部ホルダー２を載置し、更
に、上部ホルダー２の上に大きな伸び量を有する金属製
のばね又はベローズの如きクッション４を載せ、全体を
上下のボルスタ５，６で挾持させ、締付ロッド７及びナ
ット８にてスタック１に締付力を付与させるようにして
いる。In order to satisfy such a need, as shown in an example in FIG. 2, a fuel cell stack 1 is mounted on a lower holder 3, an upper holder 2 is mounted on the stack 1, and an upper holder 2 is further mounted. A cushion 4 such as a metal spring or a bellows having a large amount of elongation is placed on the top 2, the whole is clamped by upper and lower bolsters 5 and 6, and a tightening force is applied to the stack 1 by a tightening rod 7 and a nut 8. It is made to give.
【０００５】[0005]
【発明が解決しようとする課題】ところが、溶融炭酸塩
型燃料電池の場合、上記のように締付装置で締め付ける
ようにしても、電解質は吸湿性が高いので、吸湿すると
性能劣化を起すことになるが、近年では、電池が大容量
化されてきており、モジュール化した電池を据え付ける
にしても、一つの容器の中に複数の電池を入れることが
多いため、据付工期が長くて吸湿し易く、据付工事期間
中は朝晩のみ容器の上蓋を開閉することで大気放置時間
の低減を図るようにしているが、容器の開閉は毎日行う
ので、日中は不要ではあるものの、大型クレーンを毎日
準備することになってコスト高となり、又、湿度は天候
に左右されることから、雨天時の作業中断も必要であ
り、日程の確保が厳しい、という問題がある。However, in the case of a molten carbonate fuel cell, even if the fuel cell is tightened by the tightening device as described above, since the electrolyte has high hygroscopicity, the performance is degraded when moisture is absorbed. However, in recent years, batteries have been increasing in capacity, and even if a modularized battery is installed, a plurality of batteries are often placed in one container, so the installation period is long and moisture is easily absorbed. During the installation work, the upper lid is opened and closed only in the morning and evening to reduce the air exposure time.However, since the container is opened and closed every day, it is unnecessary during the day, but a large crane is prepared every day. As a result, the cost is increased, and the humidity is affected by the weather. Therefore, it is necessary to interrupt the work in rainy weather, and there is a problem that the schedule is severely secured.
【０００６】そのため、据付工事期間中は仮設のドライ
ルームが必要となるので、更にコスト高になり、又、ド
ライルームには乾燥ガスを流すようにすることから、据
付物品の搬入が大変であり、更に、ドライルームの中で
は、作業者の数を制約する等の対応が必要となる。[0006] Therefore, a temporary dry room is required during the installation work, which further increases the cost. In addition, since dry gas is supplied to the dry room, it is difficult to carry in the installed articles. In the dry room, it is necessary to take measures such as limiting the number of workers.
【０００７】一方、小型の電池では、据付時間も短く
て、容器の上蓋をすぐに閉じることはできるが、小型電
池の場合、スタックを小さくして、それを現地で重ねる
ことにより１モジュールとする方式が採用されることが
多く、この方式の場合、据え付け時に仮設のビニールハ
ウスを作り、その中に乾燥ガスを流すことになるが、中
に作業員が入るので湿度が高くなる問題がある。On the other hand, in the case of a small battery, the installation time is short and the top lid of the container can be closed immediately. However, in the case of a small battery, the stack is reduced and the module is stacked on site to make one module. In many cases, a method is adopted. In this method, a temporary plastic greenhouse is made at the time of installation, and a dry gas is flowed through the greenhouse.
【０００８】そこで、本発明は、電池を据え付けるまで
の吸湿の問題を、現地でドライルームを使用することな
く対処できるようにして据付工期の短縮化を図ることが
できるような溶融炭酸塩型燃料電池の吸湿防止方法を提
供しようとするものである。Accordingly, the present invention provides a molten carbonate type fuel capable of solving the problem of moisture absorption before installing a battery without using a dry room on site to shorten the installation period. An object of the present invention is to provide a method for preventing moisture absorption of a battery.
【０００９】[0009]
【課題を解決するための手段】本発明は、上記課題を解
決するために、工場にて、電池収容用容器内に収容させ
る前の状態の燃料電池スタックの周囲を、該スタックと
の間に隙間が形成されるように断熱材及び外被からなる
密封断熱層で覆い、且つ上記断熱材の所要個所に、上記
隙間へ乾燥ガスを注入するためのパイプとスタック内の
アノードガス流路及びカソードガス流路に乾燥ガスを注
入するためのパイプとを予め取り付けた状態として、上
記スタックの保管及び運搬を行うようにし、現地での据
え付け時に、密封断熱層で覆われた上記スタックを電池
収容用容器内に入れて仮り置きした状態において、上記
隙間とアノードガス流路及びカソードガス流路のそれぞ
れとに上記各パイプを通して乾燥ガスを同時に注入させ
るようにする溶融炭酸塩型燃料電池の吸湿防止方法とす
る。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a method in which a fuel cell stack before being housed in a battery housing container at a factory is placed between the fuel cell stack and the fuel cell stack. A pipe for injecting a dry gas into the gap, a pipe for injecting a dry gas into the gap, and an anode gas flow path and a cathode in a stack, where the gap is formed with a hermetically sealed heat-insulating layer composed of a heat insulating material and a jacket, and a heat insulating material. With the pipe for injecting the dry gas into the gas flow path previously attached, the stack is stored and transported, and at the time of on-site installation, the stack covered with the sealed heat insulating layer is used for battery storage. In a state where the gas is temporarily placed in a container, melting is performed such that a dry gas is simultaneously injected through the pipes into the gap and each of the anode gas channel and the cathode gas channel. The moisture absorption prevention method of salt type fuel cell.
【００１０】工場にて密封化した電池を現地に運び、据
え付け時にスタックと断熱材との間の隙間、更にはスタ
ック内に乾燥ガスを流すことで、現地で、ドライルーム
を用いることなく吸湿を防止することができるようにな
る。At the factory, the sealed battery is carried to the site, and a gap is provided between the stack and the heat insulating material at the time of installation, and further, by flowing a dry gas into the stack, moisture absorption can be performed locally without using a dry room. Can be prevented.
【００１１】[0011]
【発明の実施の形態】以下、本発明の実施の形態を図面
を参照して説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１２】図１は本発明の実施の一形態として、中間
ホルダーを挟んで上下２段にスタックを積層した溶融炭
酸塩型燃料電池の一例を示すもので、中間ホルダー９を
挟んで上下のスタック１を上下に配置し、且つ上部のス
タック１上には、ヒータ内蔵の上部ホルダー２、クッシ
ョン４を介して上ボルスタ５を載置すると共に、中間ホ
ルダー９の下側には、下部のスタック１、ヒータ内蔵の
下部ホルダー３、クッション４、下ボルスタ６を、上部
側とは対称的に配置し、且つ上記中間ホルダー９に貫通
させた各締付ロッド７の中間部分に、ナット１０を中間
ホルダー９を挟むように螺合し、各締付ロッド７を中間
ホルダー９に固定するようにして、上記各締付ロッド７
の上端部と下端部に螺合させたナット８を介し上下のボ
ルスタ５，６を中間ホルダー９方向へ押し付けるように
締め付けることにより、クッション４を圧縮した状態で
上下のスタック１に所定の締付力を付与させるようにし
た構成において、上記上部ホルダー２とこれに接するク
ッション４との間に上部断熱材（耐圧縮性の保温材）１
１を、又、上記下部ホルダー３とこれに接するクッショ
ン４との間に下部断熱材（耐圧縮性の保温材）１２を、
それぞれ介在させるように配置すると共に、上下のスタ
ック１の外周部及び中間ホルダー９に連結設置された酸
化ガスや燃料ガスの給排ヘッダー１６の外表面部に、外
周断熱材（保温材）１３及び断熱材外被１４を取り付け
て、各断熱材１１，１２，１３及び外被１４によりスタ
ック１の周囲に密封断熱層１５を形成し、更に該密封断
熱層１５の外周断熱材１３部の所要位置に、外周断熱材
１３とスタック１との間の隙間１７にＮ2 やドライエア
の如き乾燥ガス１８を注入するための乾燥ガス注入部と
してのパイプ１９を取り付けると共に、上記給排ヘッダ
ー１６の所要位置にも、同様なパイプ２０を密封断熱層
１５を貫通させて取り付け、電池の据付時に上記隙間１
７及びスタック１内のアノードガス流路及びカソードガ
ス流路に乾燥ガス１８を注入させるようにする。FIG. 1 shows, as an embodiment of the present invention, an example of a molten carbonate fuel cell in which stacks are stacked in two stages above and below an intermediate holder. The upper bolster 5 is placed on the upper stack 1 via an upper holder 2 with a built-in heater and a cushion 4, and the lower stack 1 is placed below the intermediate holder 9. , A lower holder 3 with a built-in heater, a cushion 4, and a lower bolster 6 are arranged symmetrically with respect to the upper side, and a nut 10 is attached to an intermediate portion of each tightening rod 7 penetrated through the intermediate holder 9. 9 so as to sandwich each of the tightening rods 7 so as to fix each of the tightening rods 7 to the intermediate holder 9.
The upper and lower bolsters 5 and 6 are tightened by pressing the upper and lower bolsters 5 and 6 toward the intermediate holder 9 via nuts 8 screwed to upper and lower ends of the upper and lower stacks 1 in a compressed state. In a configuration in which a force is applied, an upper insulating material (compression-resistant heat insulating material) 1 is provided between the upper holder 2 and the cushion 4 in contact with the upper holder 2.
1 and a lower insulating material (compression-resistant heat insulating material) 12 between the lower holder 3 and the cushion 4 in contact with the lower holder 3.
The outer heat insulating material (heat insulating material) 13 and the outer heat insulating material (heat insulating material) 13 are arranged on the outer peripheral portion of the upper and lower stacks 1 and the outer surface of the oxidizing gas or fuel gas supply / discharge header 16 connected to the intermediate holder 9. A heat insulating material cover 14 is attached, a sealed heat insulating layer 15 is formed around the stack 1 by the heat insulating materials 11, 12, 13 and the cover 14, and a required position of the outer heat insulating material 13 part of the sealed heat insulating layer 15 At the same time, a pipe 19 as a dry gas injection portion for injecting a dry gas 18 such as N 2 or dry air is attached to a gap 17 between the outer peripheral heat insulating material 13 and the stack 1, and a required position of the supply / discharge header 16 is provided. Also, a similar pipe 20 is attached so as to penetrate the sealing and heat-insulating layer 15, and when the battery is installed, the gap 1
The drying gas 18 is injected into the anode gas flow path 7 and the cathode gas flow path in the stack 1.
【００１３】上記断熱材１１，１２，１３としては、た
とえば、成形材（炭酸カルシウム）と、該成形材の微細
な空隙を埋めるためにセラミックス繊維系のルーズな保
温材原料とを組み合わせたものを用いるようにし、又、
外被１４としては、断熱材１３間の微小隙間を塞ぐため
に布を用いるようにする。As the heat insulating materials 11, 12, and 13, for example, a material obtained by combining a molding material (calcium carbonate) and a ceramic fiber-based loose heat insulating material material for filling fine voids in the molding material is used. To use, and
As the jacket 14, a cloth is used to close the minute gap between the heat insulating materials 13.
【００１４】現地で据え付けるべき電池のモジュールを
大きくすると、モジュール毎の工場前処理及び初期特性
試験の設備が大型化し、一方、小さくすると、現地で電
池を収容する容器が大型化してしまう。又、小さなセル
構成として、工場で組み立てモジュール化することもで
きるが、組替作業が必要となる等の問題があるので、本
発明では、輸送制限（大きさ、重量）を考慮した適切な
大きさの電池モジュールとし、前処理→現地発送の計装
工事→現地用保温工事→乾燥保温→輸送→仮り置き→乾
燥ガス供給→据付工事→容器上蓋閉鎖の手順を採用する
ことによって、吸湿を防止させるようにする。When the size of a battery module to be installed on site is increased, the size of the equipment for factory pretreatment and initial characteristic test for each module increases, while when the size is reduced, the container for accommodating the battery on site increases in size. Further, as a small cell configuration, an assembly module can be assembled at a factory. However, there is a problem that a re-arrangement operation is required. Therefore, in the present invention, an appropriate size considering the transportation restrictions (size, weight) is taken. Prevention of moisture absorption by adopting the procedure of pre-treatment → instrumentation work for local dispatch → heat insulation work for the field → dry heat insulation → transportation → temporary storage → dry gas supply → installation work → container lid closure Let it do.
【００１５】現地で電池を据え付けるまでの手順を具体
的に説明すると、先ず、工場のドライルーム内におい
て、電池収容用容器内に収容させる前の状態のモジュー
ル化したスタック１の周囲に、モジュール化した断熱材
１１，１２，１３及び外被１４を施工して密封断熱層１
５を形成させるようにする。この際、スタック１と外周
断熱材１３との間には、予め所要の隙間１７が形成され
るようにしておく。更に、上述したように、上記外周断
熱材１３の所要個所に、隙間１７へ乾燥ガス１８を注入
するためのパイプ１９と、スタック内のアノードガス流
路及びカソードガス流路へ乾燥ガス１８を注入するため
のパイプ２０を予め取り付けておくようにする。なお、
外被１４は、のり等の接着材で断熱材１１，１２，１３
の外側面に貼り付けるようにする。The procedure up to the installation of batteries on site will be specifically described. First, in a dry room of a factory, modularization is performed around a modularized stack 1 before being housed in a battery housing container. The heat insulating materials 11, 12, 13 and the outer cover 14 are applied to form a sealed heat insulating layer 1.
5 is formed. At this time, a required gap 17 is formed in advance between the stack 1 and the outer peripheral heat insulating material 13. Further, as described above, the pipe 19 for injecting the drying gas 18 into the gap 17 and the drying gas 18 into the anode gas flow path and the cathode gas flow path in the stack are provided at required positions of the outer peripheral heat insulating material 13. The pipe 20 to be mounted is attached in advance. In addition,
The outer casing 14 is made of an adhesive such as glue, and is made of a heat insulating material 11, 12, 13.
On the outside surface of the
【００１６】上記のようにして密封断熱層１５にて覆っ
た電池を保管及び運搬するときは、箱に入れてＮ2 を封
入させるようにする。When storing and transporting the battery covered with the sealed heat-insulating layer 15 as described above, the battery is put in a box so that N 2 is enclosed.
【００１７】現地まで運搬して電池収容用容器内に据え
付けるときは、該容器の蓋をあけ、スタック１を容器内
に入れて仮り置きした状態において、スタック１と外周
断熱材１３との間の隙間１７に、パイプ１９を通して乾
燥ガス１８を注入させるようにする。又、このとき同時
に、スタック１内のアノードガス流路及びカソードガス
流路にも、パイプ２０を通して乾燥ガス１８を注入させ
るようにする。この際、乾燥ガス１８としてドライエア
を用いる場合は、その露点温度が据付場所、時期の最低
温度以下となるようにする。When transported to the site and installed in the battery storage container, the container is opened, and the stack 1 is temporarily placed in the container. A drying gas 18 is injected into the gap 17 through a pipe 19. At this time, the drying gas 18 is also injected into the anode gas passage and the cathode gas passage in the stack 1 through the pipe 20. At this time, when dry air is used as the drying gas 18, the dew point temperature is set to be equal to or lower than the minimum temperature at the installation location and time.
【００１８】なお、スタック１内に注入した乾燥ガス１
８は、本来のガス出入口ラインに閉止蓋を設けておくこ
とで微小リークさせて逃がすようにする。The dry gas 1 injected into the stack 1
8 is provided with a closing lid on the original gas inlet / outlet line to allow a minute leak to escape.
【００１９】しかる後、配管据え付け、計装工事を行っ
て本据え付けを行うが、上述したように、スタック１の
内外に乾燥ガス１８が充満しているため、吸湿に多大な
考慮、対策を要することなく電解質の吸湿を防止するこ
とができる。After that, the actual installation is performed by performing pipe installation and instrumentation work. However, as described above, since the inside and outside of the stack 1 is filled with the dry gas 18, a great deal of consideration and measures are required for moisture absorption. Without this, it is possible to prevent the electrolyte from absorbing moisture.
【００２０】このように、適切な大きさのモジュール電
池として、工場でスタック１の周囲に密封断熱層１５を
施工するようにするので、現地の据付工事では、吸湿防
止対策が、少量の乾燥ガス１８の使用のみとなって簡単
になり、そのため、ドライルームの仮設工事が不要であ
り、現地での据付工事期間の短縮を図ることができる。
又、スタック１と外周断熱材１３との間に隙間１７を形
成することで、スタック１の外周へ１個所から乾燥ガス
１８を注入することにより吸湿を防止することができ、
供給配管を少なくできる。更に、密封断熱層１５を形成
する断熱材１１，１２，１３は成形材とルーズ材を用い
ることで、保温性を良好なものとすることができて気密
性の向上を図ることができ、しかも、外被１４として布
を用いることから、複雑な形状にも対応可能で密封化が
容易である。As described above, since the sealed heat-insulating layer 15 is constructed around the stack 1 in the factory as a module battery having an appropriate size, in the on-site installation work, a measure to prevent moisture absorption requires a small amount of dry gas. Since only the use of 18 is used, the construction becomes simple, so that the temporary work of the dry room is not required, and the installation work on site can be shortened.
Further, by forming a gap 17 between the stack 1 and the outer peripheral heat insulating material 13, it is possible to prevent moisture absorption by injecting a dry gas 18 from one place to the outer periphery of the stack 1,
Supply piping can be reduced. Furthermore, by using a molding material and a loose material for the heat insulating materials 11, 12, and 13 forming the sealed heat insulating layer 15, the heat insulation can be improved, and the airtightness can be improved. Since the cloth is used as the outer cover 14, it is possible to cope with a complicated shape and to easily seal.
【００２１】なお、上記実施の形態では、セルの積層数
を多くして高積層化を図るために、中間ホルダー９を挟
んでスタック１を上下に積層して配置した場合を示した
が、図示の構造に限定されるものではないばかりでな
く、図２の如くスタック１を１段のみ設置するようにし
たものであっても同様に採用できること、又、締付装置
としては図示した以外の構造のものであってもよいこ
と、その他本発明の要旨を逸脱しない範囲内において種
々変更を加え得ることは勿論である。In the above-described embodiment, the stack 1 is vertically stacked with the intermediate holder 9 interposed therebetween in order to increase the number of stacked cells and increase the number of stacked cells. The structure is not limited to the above, and it is equally possible to adopt a structure in which only one stack 1 is installed as shown in FIG. 2. Of course, various changes can be made without departing from the scope of the present invention.
【００２２】[0022]
【発明の効果】以上述べた如く、本発明の溶融炭酸塩型
燃料電池の吸湿防止方法によれば、工場にて、電池収容
用容器内に収容させる前の状態の燃料電池スタックの周
囲を、該スタックとの間に隙間が形成されるように断熱
材及び外被からなる密封断熱層で覆い、且つ上記断熱材
の所要個所に、上記隙間へ乾燥ガスを注入するためのパ
イプとスタック内のアノードガス流路及びカソードガス
流路に乾燥ガスを注入するためのパイプとを予め取り付
けた状態として、上記スタックの保管及び運搬を行うよ
うにし、現地での据え付け時に、密封断熱層で覆われた
上記スタックを電池収容用容器内に入れて仮り置きした
状態において、上記隙間とアノードガス流路及びカソー
ドガス流路のそれぞれとに上記各パイプを通して乾燥ガ
スを同時に注入させるようにするので、現地での据え付
け時に、仮設ドライルームを用いることなく簡単にスタ
ック外周及び内部の吸湿を防止することができて、据付
工事期間を大幅に短縮することができ、又、断熱材の外
被に布を用いることにより複雑な形状でも簡単に貼り付
けられて容易に密封化することができる、という優れた
効果を発揮する。As described above, according to the method for preventing moisture absorption of a molten carbonate fuel cell according to the present invention, the periphery of the fuel cell stack before being housed in the battery housing container at the factory is: A pipe for injecting a dry gas into the gap and a pipe for injecting a dry gas into the gap at a required portion of the heat insulator are covered with a heat insulating material and a hermetically sealed heat insulating layer such that a gap is formed between the stack and the stack. With the pipes for injecting the dry gas into the anode gas flow path and the cathode gas flow path pre-attached, the stack was stored and transported, and when installed on site, it was covered with a hermetic heat-insulating layer. In a state where the stack is temporarily placed in a container for battery storage, a dry gas is simultaneously injected through the pipes into the gap and each of the anode gas channel and the cathode gas channel. As a result, during installation on site, it is possible to easily prevent moisture absorption around and inside the stack without using a temporary dry room, greatly shortening the installation work period, and By using a cloth for the outer cover of the material, an excellent effect is obtained in that even a complicated shape can be easily attached and sealed easily.
【図１】本発明の溶融炭酸塩型燃料電池の吸湿防止方法
の実施の一形態を示す概要図である。FIG. 1 is a schematic view showing one embodiment of a method for preventing moisture absorption of a molten carbonate fuel cell according to the present invention.
【図２】従来の燃料電池用締付装置の一例を示す概要図
である。FIG. 2 is a schematic view showing an example of a conventional fuel cell fastening device.
１ スタック ５ 上ボルスタ ６ 下ボルスタ ７ 締付ロッド（締付装置） １１ 上部断熱材 １２ 下部断熱材 １３ 外周断熱材 １４ 外被 １５ 密封断熱層 １７ 隙間 １８ 乾燥ガス １９，２０ パイプ（乾燥ガス注入部） DESCRIPTION OF SYMBOLS 1 Stack 5 Upper bolster 6 Lower bolster 7 Tightening rod (tightening device) 11 Upper heat insulating material 12 Lower heat insulating material 13 Peripheral heat insulating material 14 Jacket 15 Sealed heat insulating layer 17 Gap 18 Dry gas 19, 20 Pipe (Dry gas injection part) )
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H01M 8/04,8/24 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) H01M 8 / 04,8 / 24
Claims (1)
る前の状態の燃料電池スタックの周囲を、該スタックと
の間に隙間が形成されるように断熱材及び外被からなる
密封断熱層で覆い、且つ上記断熱材の所要個所に、上記
隙間へ乾燥ガスを注入するためのパイプとスタック内の
アノードガス流路及びカソードガス流路に乾燥ガスを注
入するためのパイプとを予め取り付けた状態として、上
記スタックの保管及び運搬を行うようにし、現地での据
え付け時に、密封断熱層で覆われた上記スタックを電池
収容用容器内に入れて仮り置きした状態において、上記
隙間とアノードガス流路及びカソードガス流路のそれぞ
れとに上記各パイプを通して乾燥ガスを同時に注入させ
るようにすることを特徴とする溶融炭酸塩型燃料電池の
吸湿防止方法。1. A hermetically-sealed heat insulating material and an outer casing around a fuel cell stack before being housed in a battery housing container at a factory so that a gap is formed between the stack and the fuel cell stack. A pipe for injecting dry gas into the gap and a pipe for injecting dry gas into the anode gas flow path and the cathode gas flow path in the stack are pre-installed at required positions of the heat insulating material. In such a state, the stack is stored and transported, and at the time of installation at the site, the gap and the anode gas are placed in a state where the stack covered with the sealed heat-insulating layer is temporarily stored in a battery housing container. A method for preventing moisture absorption of a molten carbonate fuel cell, wherein a dry gas is simultaneously injected into each of the flow path and the cathode gas flow path through each of the pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22832799A JP3295778B2 (en) | 1999-08-12 | 1999-08-12 | Method for preventing moisture absorption of molten carbonate fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22832799A JP3295778B2 (en) | 1999-08-12 | 1999-08-12 | Method for preventing moisture absorption of molten carbonate fuel cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001052726A JP2001052726A (en) | 2001-02-23 |
| JP3295778B2 true JP3295778B2 (en) | 2002-06-24 |
Family
ID=16874725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22832799A Expired - Fee Related JP3295778B2 (en) | 1999-08-12 | 1999-08-12 | Method for preventing moisture absorption of molten carbonate fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3295778B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4598510B2 (en) * | 2004-12-22 | 2010-12-15 | 本田技研工業株式会社 | Fuel cell system |
| JP4598508B2 (en) * | 2004-12-22 | 2010-12-15 | 本田技研工業株式会社 | Fuel cell system |
| JP7140590B2 (en) * | 2018-07-24 | 2022-09-21 | 株式会社東芝 | electrochemical cell stack |
-
1999
- 1999-08-12 JP JP22832799A patent/JP3295778B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2001052726A (en) | 2001-02-23 |
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