JPH0422071A - Method for storing phosphoric acid type fuel cell - Google Patents
Method for storing phosphoric acid type fuel cellInfo
- Publication number
- JPH0422071A JPH0422071A JP2127708A JP12770890A JPH0422071A JP H0422071 A JPH0422071 A JP H0422071A JP 2127708 A JP2127708 A JP 2127708A JP 12770890 A JP12770890 A JP 12770890A JP H0422071 A JPH0422071 A JP H0422071A
- Authority
- JP
- Japan
- Prior art keywords
- phosphoric acid
- fuel cell
- moisture
- fresh air
- main body
- 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.)
- Pending
Links
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 229910000147 aluminium phosphate Inorganic materials 0.000 title claims abstract description 18
- 239000000446 fuel Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 4
- 239000002250 absorbent Substances 0.000 claims abstract description 9
- 230000002745 absorbent Effects 0.000 claims abstract description 9
- 210000004027 cell Anatomy 0.000 claims description 14
- 210000005056 cell body Anatomy 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 239000012495 reaction gas Substances 0.000 abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 2
- 230000006866 deterioration Effects 0.000 abstract description 2
- 239000000741 silica gel Substances 0.000 abstract description 2
- 229910002027 silica gel Inorganic materials 0.000 abstract description 2
- 230000008602 contraction Effects 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000003230 hygroscopic agent Substances 0.000 description 1
- 239000000463 material 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)
Abstract
Description
この発明は、電解質としてリン酸を用いるリン酸型燃料
電池に関し、特に工場出荷時から据え付けまでの間のリ
ン酸の吸湿を防止するための方法に関する。The present invention relates to a phosphoric acid fuel cell using phosphoric acid as an electrolyte, and particularly to a method for preventing moisture absorption of phosphoric acid from the time of factory shipment until installation.
据え付けに先立って燃料電池の保管や輸送が行われてい
る間（以下、単に保管中という。）に、周囲温度の変化
により燃料電池内の気体の体積が収縮すると、電池本体
内に外気が侵入する。一方、リン酸型燃料電池の電解液
であるリン酸は吸湿性が高く、湿った外気の侵入により
吸湿が甚だしくなると体積が膨張して電極基材内の反応
ガス通路を閉塞する危険がある。
そのため、従来はリン酸型燃料電池の保管中は燃料電池
容器内に窒素ガスを供給したり、ゴム製のガス袋を反応
ガスマニホルドに取り付けるなどして外気の侵入を防止
していた。While the fuel cell is being stored or transported prior to installation (hereinafter simply referred to as storage), if the volume of gas inside the fuel cell contracts due to changes in ambient temperature, outside air may enter the cell body. do. On the other hand, phosphoric acid, which is the electrolytic solution for phosphoric acid fuel cells, is highly hygroscopic, and if moisture absorption becomes severe due to the intrusion of humid outside air, there is a risk that the volume will expand and block the reaction gas passage in the electrode base material. For this reason, conventional methods have been to prevent outside air from entering during storage of phosphoric acid fuel cells, such as by supplying nitrogen gas into the fuel cell container or attaching a rubber gas bag to the reaction gas manifold.
しかしながら、このような従来方法では電池本体を保管
する設備が大掛かりムこなるという問題がある。
この発明は、窒素ガスの供給設備やガス袋の設置を不要
とし、より簡便にリン酸型燃料電池を保管できる方法を
提供することを目的とするものである。However, such a conventional method has a problem in that the equipment for storing the battery body is large-scale. An object of the present invention is to provide a method for storing a phosphoric acid fuel cell more easily without the need for nitrogen gas supply equipment or gas bags.
この発明は、保管中の電池本体の反応ガス経路を吸湿剤
を介して外気と連通させるものとする。In this invention, the reactive gas path of the battery main body during storage is communicated with the outside air via a moisture absorbent.
反応ガス経路は吸湿剤を介して呼吸することになるため
、マトリクスに保持されたリン酸と接触する反応ガス経
路内の空気の湿度が低下し、リン酸の吸湿が少なくなる
。Since the reaction gas path breathes through the hygroscopic agent, the humidity of the air in the reaction gas path that comes into contact with the phosphoric acid held in the matrix decreases, and the phosphoric acid absorbs less moisture.
第１図はこの発明の実施例を示す概略平面図で、１は電
池本体、２及び３はそれぞれ空気の入口及び出口マニホ
ルド、４及び５はそれぞれ燃料ガスの入口及び出口マニ
ホルドである。電池本体１は空気電極、リン酸を含浸し
たマトリクス及び水素電極からなる方形の単電池がセパ
レータを介して必要数積層されたもので、空気入口マニ
ホルド２から単電池に供給された空気は残りが空気出口
マニホルド３から排出され、空気に直交するように燃料
入口マニホルド４から単電池に供給された燃料ガスは残
りが燃料出口マニホルド５から排出される。
このような電池本体１を保管あるいは輸送する場合にお
いて、電池本体１内に外気がそのまま侵入するとリン酸
が吸湿して劣化する。そこで、保管中は図示の通り出口
側のマニホルド３及び５の排気バルブ３ａ及び５ａを締
め切り、入口側のマニホルド２及び４の給気口２ａ及び
４ａを吸湿剤（シリカゲル）６を充填した容器７及び８
を介して大気に解放するようにしている。
このような構成とすることにより、燃料電池の周囲温度
が変動して内部の気体体積が収縮し、電池本体１内に外
気が侵入しても、その外気は吸湿剤６により吸湿されて
水分量が低下するため、リン酸の吸湿による劣化が防止
される。また、吸湿剤容器７．８はマニホルド配管の一
部として容易に取り付けられるので、窒素ガスの供給や
ゴム類のガス袋の取り付けに比べて設備が簡便となり、
設置スペースも小さくて済む。FIG. 1 is a schematic plan view showing an embodiment of the present invention, in which 1 is a battery main body, 2 and 3 are air inlet and outlet manifolds, and 4 and 5 are fuel gas inlet and outlet manifolds, respectively. The battery body 1 is made up of a required number of rectangular cells consisting of an air electrode, a matrix impregnated with phosphoric acid, and a hydrogen electrode, stacked together with a separator in between.The air supplied to the cells from the air inlet manifold 2 is The fuel gas is discharged from the air outlet manifold 3 and supplied to the cell from the fuel inlet manifold 4 perpendicular to the air, and the remainder is discharged from the fuel outlet manifold 5. When storing or transporting such a battery body 1, if outside air directly enters the battery body 1, the phosphoric acid absorbs moisture and deteriorates. Therefore, during storage, as shown in the figure, the exhaust valves 3a and 5a of the manifolds 3 and 5 on the outlet side are closed, and the air supply ports 2a and 4a of the manifolds 2 and 4 on the inlet side are connected to a container 7 filled with a moisture absorbent (silica gel) 6. and 8
It is released to the atmosphere through the air. With this configuration, even if the ambient temperature of the fuel cell fluctuates and the internal gas volume contracts and outside air enters the cell body 1, the outside air will be absorbed by the moisture absorbent 6 and the moisture content will be reduced. This reduces deterioration of phosphoric acid due to moisture absorption. In addition, since the moisture absorbent container 7.8 can be easily installed as part of the manifold piping, the equipment is simpler than supplying nitrogen gas or installing a rubber gas bag.
The installation space is also small.
この発明によれば、侵入する外気の水分を除去できるの
で保管中の燃料電池のリン酸の吸湿を有効に防止できる
とともに、窒素ガスを供給したりガス袋を取り付けたり
して外気の侵入を阻止する従来方法に比べて設備が簡便
になり、設置スペースも小さくなる。According to this invention, it is possible to remove moisture from invading outside air, effectively preventing moisture absorption of phosphoric acid in stored fuel cells, and also to prevent intrusion of outside air by supplying nitrogen gas or attaching a gas bag. Compared to the conventional method, the equipment is simpler and the installation space is smaller.
第１図はこの発明の実施例を示す概略平面図である。
ｌ・・・電池本体、２．３・・・空気マニホルド、４゜
５・・・燃料マニホルド、６・・・吸湿剤。
り〔FIG. 1 is a schematic plan view showing an embodiment of the invention. l...Battery body, 2.3...Air manifold, 4°5...Fuel manifold, 6...Moisture absorbent. the law of nature〔
Claims (1)
応ガス経路を吸湿剤を介して外気と連通させることを特
徴とするリン酸型燃料電池の保管方法。1) A method for storing a phosphoric acid fuel cell, which comprises communicating the reactive gas path of the cell body with outside air via a moisture absorbent during storage of the phosphoric acid fuel cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2127708A JPH0422071A (en) | 1990-05-17 | 1990-05-17 | Method for storing phosphoric acid type fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2127708A JPH0422071A (en) | 1990-05-17 | 1990-05-17 | Method for storing phosphoric acid type fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0422071A true JPH0422071A (en) | 1992-01-27 |
Family
ID=14966745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2127708A Pending JPH0422071A (en) | 1990-05-17 | 1990-05-17 | Method for storing phosphoric acid type fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0422071A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8439652B2 (en) | 2007-02-16 | 2013-05-14 | Kabushiki Kaisha Toyota Jidoshokki | Suction throttle valve for variable displacement type compressor |
| JP2018037271A (en) * | 2016-08-31 | 2018-03-08 | 東芝燃料電池システム株式会社 | Fuel cell sealing component, fuel cell, and storage method of fuel cell stack |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5519712A (en) * | 1978-07-28 | 1980-02-12 | Fuji Electric Co Ltd | Stopping method of fuel cell |
| JPH0272563A (en) * | 1988-06-16 | 1990-03-12 | Fuji Electric Co Ltd | Purge gas replacing of fuel cell |
-
1990
- 1990-05-17 JP JP2127708A patent/JPH0422071A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5519712A (en) * | 1978-07-28 | 1980-02-12 | Fuji Electric Co Ltd | Stopping method of fuel cell |
| JPH0272563A (en) * | 1988-06-16 | 1990-03-12 | Fuji Electric Co Ltd | Purge gas replacing of fuel cell |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8439652B2 (en) | 2007-02-16 | 2013-05-14 | Kabushiki Kaisha Toyota Jidoshokki | Suction throttle valve for variable displacement type compressor |
| JP2018037271A (en) * | 2016-08-31 | 2018-03-08 | 東芝燃料電池システム株式会社 | Fuel cell sealing component, fuel cell, and storage method of fuel cell stack |
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