JPH0782875B2 - Fuel cell - Google Patents
Fuel cellInfo
- Publication number
- JPH0782875B2 JPH0782875B2 JP63023683A JP2368388A JPH0782875B2 JP H0782875 B2 JPH0782875 B2 JP H0782875B2 JP 63023683 A JP63023683 A JP 63023683A JP 2368388 A JP2368388 A JP 2368388A JP H0782875 B2 JPH0782875 B2 JP H0782875B2
- Authority
- JP
- Japan
- Prior art keywords
- tightening
- battery
- pressure
- plate
- stack
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
-
- 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
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、燃料電池の改良に係り、特に電池積層体が垂
直方向に積層され、かつ締め付け装置により電池積層面
に所定の締め付け面圧を得るように形成されている燃料
電池に関するものである。Description: TECHNICAL FIELD The present invention relates to an improvement of a fuel cell, and in particular, a cell stack is vertically stacked, and a predetermined tightening surface pressure is applied to the cell stack surface by a tightening device. The invention relates to a fuel cell configured to obtain.
燃料電池（以下単に電池と云う）、特に溶融炭酸塩型燃
料電池は、例えば、特開昭61−85774号公報に開示され
ているように、主要な電池構成部材である電解質板，電
極，セパレータ等を平板状となし、これを多数積層し
て、電池構造体を形成するものである。又、電池の性能
を高水準に維持して運転する為に、前述の構成部材を上
又は下から加圧し、すなわち積層方向に加圧し、各部材
の境界面に一定の面圧を保つようにすることは、一般に
知られている。前述の電池に加圧する方式について、種
々の方式が考案されており、大別すると特開昭58−8248
1号公報や特開昭58−82482号公報等のように電池積層体
の周辺部に配した締付ロッドにより電池を締付ける方式
と、特開昭58−53166号，特開昭58−119170号，特開昭5
9−138057号公報等に見られるように、ある種の圧力流
体を用いた圧力ユニットを電池積層体の上方又は下方に
配し、電池積層体を締付ける方式とがある。前者の方式
は、通常650℃もの高温で運転される溶融炭酸塩型燃料
電池では、締付ロッドの高温クリープ伸び等が発生し、
電池の締付面圧が経時的に低減し、電池性能に悪影響を
及ぼす欠点がある。一方、後者の方式ではこれを解決て
きるが、この種溶融炭酸塩型燃料電池は積層面間に膨大
な締め付け面圧が必要であることから、床面から立ち上
がった締め付けロッドおよびその床面を利用しての締め
付けであり、電池を締め付けた場合、電池締付力と等し
い反力が必ず発生し、例えば特開昭59−138075号公報で
は、電池締付反力は直接電池を設置した床面に働くこと
になる。例えば、電池のサイズを150×150cm2とし、最
小でも電池締付面圧を2kg/cm2と仮定した場合でも、圧
力ユニットによって発生する床面に働く圧力は45トンに
なる。従って仮りに100MW級程度の発電プラントを想定
した場合、電池設置場所は、建屋の中二階に配置され、
下の段は、補機関係供給，配管等が配置される構造が考
えられている。この場合、電池の１モジユールを500Wと
すると200個の電池が必要となり、電池締付による床面
に働く反力は実に9000トンにもなる。BACKGROUND ART A fuel cell (hereinafter simply referred to as a cell), particularly a molten carbonate fuel cell, is disclosed in, for example, Japanese Patent Application Laid-Open No. 61-85774, and includes an electrolyte plate, an electrode, a separator which are main cell constituent members. Etc. are formed into a flat plate shape, and a large number of them are laminated to form a battery structure. Further, in order to maintain the performance of the battery at a high level, the above-mentioned constituent members are pressed from above or below, that is, in the stacking direction so that a constant surface pressure is maintained at the boundary surface of each member. What to do is generally known. Various methods have been devised for pressurizing the battery described above, and are roughly classified into Japanese Patent Laid-Open No. 58-8248.
Japanese Patent Laid-Open Nos. 58-53170 and 58-119170, and a method of tightening a battery by a tightening rod arranged in the peripheral portion of a battery stack, as disclosed in Japanese Patent Laid-Open No. 58-82482. , JP-A-5
As disclosed in Japanese Patent Laid-Open No. 9-138057, there is a system in which a pressure unit using a certain kind of pressure fluid is arranged above or below the battery stack and the battery stack is tightened. In the former method, in a molten carbonate fuel cell that is normally operated at a high temperature of 650 ° C, high-temperature creep elongation of the tightening rod etc. occurs,
There is a drawback that the tightening surface pressure of the battery decreases over time, which adversely affects the battery performance. On the other hand, the latter method solves this problem, but since this kind of molten carbonate fuel cell requires a huge tightening surface pressure between the stacking surfaces, the tightening rod rising from the floor and the floor surface It is a tightening using the battery, and when the battery is tightened, a reaction force equal to the battery tightening force is always generated. It will work on the surface. For example, even if the battery size is 150 × 150 cm 2 and the minimum battery clamping surface pressure is 2 kg / cm 2 , the pressure exerted on the floor surface by the pressure unit is 45 tons. Therefore, assuming a power plant of about 100 MW class, the battery installation location is located on the mezzanine floor of the building,
In the lower stage, a structure in which auxiliary equipment-related supply, piping, etc. are arranged is considered. In this case, if one module of the battery is set to 500W, 200 batteries are required, and the reaction force acting on the floor surface due to the tightening of the battery is actually 9,000 tons.
然し、従来の燃料電池は上記のような膨大な電池締付面
圧をどのようにするか解決していないので、実用化に際
し、建屋の床面強度を非常に強くしなければならず、設
置に多くの課題を残している。本発明はこれに鑑みなさ
れたもので、その目的とするところは、たとえこの種締
め付け面圧が膨大なものであっても、電池締め付け面圧
の反力が何等電池設置床面に影響を与えることのないこ
の種燃料電池を提供するにある。However, the conventional fuel cell has not solved how to deal with the enormous cell tightening surface pressure as described above, so in order to put it into practical use, the floor surface strength of the building must be very strong, Many challenges remain. The present invention has been made in view of this, and an object thereof is that even if this kind of tightening surface pressure is enormous, the reaction force of the battery tightening surface pressure affects the battery installation floor surface. There is no need to provide this kind of fuel cell.
すなわち本発明は、この締め付け装置を、電池積層体の
上下に配置された上部および下部締め付け板と、この上
部および下部締め付け板を貫通し、かつ前記電池積層体
の周囲に配置された締め付けロッドと、前記締め付けロ
ッドの下方端に配置されたベースプレートと、このベー
スプレートと前記下部締め付け板との間に配置され、前
記下部締め付け板を上方部に押し上げて前記電池積層体
に締め付け面圧を与える圧力ユニットとより形成し、さ
らに前記締め付けロッドを電池収納容器の底部を貫通し
て電池収納容器に固定し、かつ前記圧力ユニットの締め
付け軸も前記電池収納容器の底部を貫通するように形成
し、前記圧力ユニットおよびベースプレートを電池収納
容器の下側に露出するように形成し所期の目的を達成す
るようにしたものである。That is, the present invention provides the tightening device with upper and lower tightening plates arranged above and below the battery stack, and tightening rods penetrating the upper and lower tightening plates and arranged around the battery stack. A base plate arranged at a lower end of the tightening rod, and a pressure unit arranged between the base plate and the lower tightening plate to push the lower tightening plate upward to apply a tightening surface pressure to the battery stack. Further, the tightening rod is fixed to the battery container by penetrating the bottom part of the battery container, and the tightening shaft of the pressure unit is formed so as to penetrate the bottom part of the battery container. The unit and base plate are formed so as to be exposed under the battery container to achieve the intended purpose. A.
すなわちこのように形成された締め付け装置であると、
上部締め付け板およびベースプレートの間に電池積層体
および電池積層体に締め付け面圧を与える圧力ユニット
が配置され、そしてこれらは締め付けロッドを介して電
池収納容器に固定保持されることから、電池積層体を締
め付ける反力は、電池設置床面に関係のない締め付けロ
ッドそれに上部締め付け板およびベースプレートにかか
ることになり、電池設置床面はこれらの重量に耐えられ
るものであれば良く、したがって、たとえこの種締め付
け面圧が膨大なものであっても、電池締め付け面圧の反
力が何等電池設置床面に影響を与えることはないのであ
る。That is, with the tightening device formed in this way,
Between the upper tightening plate and the base plate, the battery stack and a pressure unit for applying a tightening surface pressure to the battery stack are arranged, and these are fixedly held in the battery storage container via the tightening rod. The reaction force to tighten will be on the tightening rod, the upper tightening plate and the base plate which are not related to the battery installation floor, and the battery installation floor should be able to withstand these weights, therefore even if this kind of tightening is used. Even if the surface pressure is enormous, the reaction force of the battery clamping surface pressure does not affect the battery installation floor.
また、さらにこの構成であると、圧力ユニットが電池収
納容器の下側に露出していることから、圧力ユニットが
電池収納容器内の高温に曝されることはないので、圧力
ユニットの作動流体が熱膨張によりその作動圧力が変化
することなく電池積層体の締め付け圧力を常に所定値に
保つことが可能である。Further, with this configuration, since the pressure unit is exposed to the lower side of the battery storage container, the pressure unit is not exposed to the high temperature in the battery storage container. It is possible to always maintain the tightening pressure of the battery stack at a predetermined value without changing its operating pressure due to thermal expansion.
以下、本発明の一実施例を第１図により説明する。電池
積層体１は、電池積層体１を電気的に遊離させるセラミ
ック等の絶縁板２により上下で挟まれ上部締付板４及び
下部締付板５の間に設置される。上部締付板４には締付
ロッド３が締付ナット4aにより取付けられている。一方
締付ロッド３の他端にはベースプレート６が締付ナット
6aにより取付けられている。又、下部締付板５には、遊
び穴5aが穿孔されており、遊び穴5aには締付ロッド３が
挿入されており、締付ロッド３を軸芯とし下部締付部５
は上下方向に自由に摺動出来る構造となっている。ベー
スプレート６上には、電池積層体１に締付面圧を与える
為の圧力ユニット７を設置し、圧力ユニット７のシリン
ダーロッド7aと下部締付板５を押し上げ電池積層体１へ
面圧を加える為の締付軸９との間には、締付力を検出し
最適な締付力を調整する為のロードセル等の検出器８を
設けた構造となっている。すなわち電池積層体を締め付
ける締め付け装置が、上部および下部締め付け板4,5、
締め付けロッド３、ベースプレート６それに圧力ユニッ
ト７から形成されている。本構造によれば、圧力ユニッ
ト７によって電池積層体１に加えられる締付力は上部締
付板４に伝わり、一方、締付力の反力は、ベースプレー
ト６に伝わる。又、上部締付板４及びベースプレート６
は締付ナット4a及び6aにより締付ロッド３に固定される
構造となっている。この為、上部締付板４及びベースプ
レート６に作用した締付力，反力は締付ロッド３を引っ
張り合う作用となり、従って電池積層体１に面圧を与え
る為に加えた締付力によって、収納容器脚11と床面12と
の固定部や床面12に不要な力を加える事の無い自己バラ
ンス型の構造である。電池を本構造とする事により、電
池設置建屋の床面の強度は、電池自重のみに耐えられる
丈であれば良く、建屋全体を軽量化，コンパクト化出来
ると共に建設費の低減に効果がある。又、本発明の変形
例として第２図に示す如く、締付ロッドを長手方向で２
分割し、且つ、締付ロッドあるいは電池収納容器の強度
上問題の無い範囲で、分割したそれぞれの締付ロッドの
芯をずらした構造としても本発明による効果と全く同一
の効果が得られる。An embodiment of the present invention will be described below with reference to FIG. The battery stack 1 is vertically sandwiched by insulating plates 2 such as ceramics that electrically separate the battery stack 1, and is installed between an upper tightening plate 4 and a lower tightening plate 5. A tightening rod 3 is attached to the upper tightening plate 4 by a tightening nut 4a. On the other hand, the base plate 6 is provided on the other end of the tightening rod 3 with a tightening nut.
It is attached by 6a. A play hole 5a is bored in the lower tightening plate 5, and a tightening rod 3 is inserted in the play hole 5a.
Has a structure that can slide freely in the vertical direction. A pressure unit 7 is provided on the base plate 6 for applying a tightening surface pressure to the battery stack 1, and the cylinder rod 7a of the pressure unit 7 and the lower tightening plate 5 are pushed up to apply a surface pressure to the battery stack 1. A detector 8 such as a load cell for detecting the tightening force and adjusting the optimum tightening force is provided between the tightening shaft 9 and the tightening shaft 9. That is, the tightening device for tightening the battery stack is composed of the upper and lower tightening plates 4,5,
It consists of a tightening rod 3, a base plate 6 and a pressure unit 7. According to this structure, the clamping force applied to the battery stack 1 by the pressure unit 7 is transmitted to the upper clamping plate 4, while the reaction force of the clamping force is transmitted to the base plate 6. In addition, the upper tightening plate 4 and the base plate 6
Is fixed to the tightening rod 3 by tightening nuts 4a and 6a. Therefore, the tightening force and the reaction force acting on the upper tightening plate 4 and the base plate 6 act to pull the tightening rods 3 together, so that the tightening force applied to apply the surface pressure to the battery stack 1 causes The self-balancing structure does not apply unnecessary force to the fixed portion between the storage container leg 11 and the floor surface 12 or the floor surface 12. By using the battery with this structure, the strength of the floor surface of the building where the battery is installed need only be long enough to withstand the weight of the battery, and the entire building can be made lighter and more compact, and construction costs can be reduced. As a modified example of the present invention, as shown in FIG.
Even if the structure is divided and the cores of the respective tightening rods are deviated to the extent that there is no problem in terms of strength of the tightening rods or the battery storage container, the same effects as the effects of the present invention can be obtained.
以上説明してきたように本発明によれば、電池積層体を
締め付ける反力は、電池設置床面に関係のない締め付け
ロッドそれに上部締め付け板およびベースプレートにか
かることになり、電池設置床面はこれらの重量に耐えら
れるものであれば良く、したがって、たとえこの種締め
付け面圧が膨大なものであっても、電池締め付け面圧の
反力が何等電池設置床面に影響を与えることはなく、さ
らに圧力ユニットが電池収納容器の下側に露出している
ことから、圧力ユニットが電池収納容器内の高温に曝さ
れることはないので、圧力ユニットの作動流体が熱膨張
によりその作動圧力が変化することなく電池積層体の締
め付け圧力を常に所定値に保つことが可能なこの種燃料
電池を得ることができる。As described above, according to the present invention, the reaction force for tightening the battery stack is applied to the tightening rod, the upper tightening plate, and the base plate that are not related to the battery installation floor surface. As long as it can bear the weight, even if this kind of tightening surface pressure is enormous, the reaction force of the battery tightening surface pressure does not affect the battery installation floor surface, Since the unit is exposed under the battery container, the pressure unit is not exposed to the high temperature inside the battery container, so the working fluid of the pressure unit changes its operating pressure due to thermal expansion. It is possible to obtain this type of fuel cell that can always maintain the tightening pressure of the cell stack at a predetermined value.
第１図は本発明の一実施例の燃料電池の縦断面図、第２
図は別の実施例の縦断面図である。 １……燃料電池積層体、２……絶縁板、３……締付ロッ
ド、４……上部締付板、4a……締付ナット、５……下部
締付板、5a……遊び穴、６……ベースプレート、6a……
締付ナット、７……圧力ユニット、7a……シリンダーロ
ッド、８……検出器、９……締付軸、10……電池収納容
器、11……収納容器脚、12……床面。FIG. 1 is a vertical sectional view of a fuel cell according to an embodiment of the present invention, and FIG.
The figure is a longitudinal sectional view of another embodiment. 1 ... Fuel cell stack, 2 ... Insulation plate, 3 ... Tightening rod, 4 ... Upper tightening plate, 4a ... Tightening nut, 5 ... Lower tightening plate, 5a ... Play hole, 6 ... Base plate, 6a ...
Tightening nut, 7 ... Pressure unit, 7a ... Cylinder rod, 8 ... Detector, 9 ... Tightening shaft, 10 ... Battery storage container, 11 ... Storage container leg, 12 ... Floor.
フロントページの続き (72)発明者 高島 正 茨城県日立市幸町３丁目１番１号 株式会 社日立製作所日立工場内 (72)発明者 児玉 省明 茨城県日立市幸町３丁目１番１号 株式会 社日立製作所日立工場内Front Page Continuation (72) Inventor Tadashi Takashima Tadashi, 1-1, Saiwaicho, Hitachi City, Ibaraki Hitachi Ltd. Hitachi factory (72) Inventor, Shomei Kodama 3-1-1, Saiwaicho, Hitachi City, Ibaraki Prefecture No. Stock Company Hitachi Ltd.Hitachi factory
Claims (1)
池積層体を、締め付け装置によりその積層方向に締め付
け、電池積層面に所定の締め付け面圧を得るように形成
されている燃料電池において、 前記締め付け装置を、 前記電池積層体の上下に配置された上部および下部締め
付け板と、 該上部および下部締め付け板を貫通し、かつ前記電池積
層体の周囲に配置された締め付けロッドと、 前記締め付けロッドの下方端に配置されたベースプレー
トと、 該ベースプレートと前記下部締め付け板との間に配置さ
れ、前記下部締め付け板を上方部に押し上げて前記電池
積層体に締め付け面圧を与える圧力ユニットとより形成
し、かつ 前記締め付けロッドを電池収納容器の底部を貫通して電
池収納容器に固定し、かつ前記圧力ユニットの締め付け
軸も前記電池収納容器の底部を貫通するように形成し、
前記圧力ユニットおよびベースプレートを電池収納容器
の下側に露出するように形成したことを特徴とする燃料
電池。1. A fuel cell in which cell stacks vertically stacked in a cell storage container are tightened in a stacking direction by a tightening device to obtain a predetermined tightening surface pressure on the cell stack surface. The tightening device includes upper and lower tightening plates arranged above and below the battery stack, a tightening rod penetrating the upper and lower tightening plates and arranged around the battery stack, and the tightening device. A base plate arranged at a lower end of the rod, and a pressure unit arranged between the base plate and the lower tightening plate to push the lower tightening plate upward to apply a tightening surface pressure to the battery stack. And tighten the tightening rod to the battery container by penetrating the bottom of the battery container and tightening the pressure unit. Also formed to penetrate the bottom of the battery container,
A fuel cell, wherein the pressure unit and the base plate are formed so as to be exposed to the lower side of the battery container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63023683A JPH0782875B2 (en) | 1988-02-05 | 1988-02-05 | Fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63023683A JPH0782875B2 (en) | 1988-02-05 | 1988-02-05 | Fuel cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01200568A JPH01200568A (en) | 1989-08-11 |
| JPH0782875B2 true JPH0782875B2 (en) | 1995-09-06 |
Family
ID=12117254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63023683A Expired - Fee Related JPH0782875B2 (en) | 1988-02-05 | 1988-02-05 | Fuel cell |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0782875B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100784444B1 (en) * | 2006-12-29 | 2007-12-11 | 두산중공업 주식회사 | Stack pressure device |
| US20240170706A1 (en) * | 2022-11-18 | 2024-05-23 | INERGIO Technologies SA | Fuel Cell Assembly |
-
1988
- 1988-02-05 JP JP63023683A patent/JPH0782875B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01200568A (en) | 1989-08-11 |
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