JPS63216271A - Electrolyte circulation type secondary battery - Google Patents
Electrolyte circulation type secondary batteryInfo
- Publication number
- JPS63216271A JPS63216271A JP62049474A JP4947487A JPS63216271A JP S63216271 A JPS63216271 A JP S63216271A JP 62049474 A JP62049474 A JP 62049474A JP 4947487 A JP4947487 A JP 4947487A JP S63216271 A JPS63216271 A JP S63216271A
- Authority
- JP
- Japan
- Prior art keywords
- frame
- conductive plate
- plate
- positive electrode
- negative electrode
- 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.)
- Granted
Links
- 239000003792 electrolyte Substances 0.000 title claims abstract description 16
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 36
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 239000008151 electrolyte solution Substances 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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
- H01M8/02—Details
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
-
- 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
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は、電解液を循環して充放電する電解液Ｓ環型
２次電池に関するものであり、特に単位セルを直列に接
続した多段接続型の電解液循環型２次電池の双極板の構
造に関するものである。[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an electrolyte S-ring type secondary battery that circulates an electrolyte to charge and discharge, and particularly relates to a multi-stage connection in which unit cells are connected in series. The present invention relates to the structure of a bipolar plate of a type of electrolyte circulation type secondary battery.
［従来の技術］
電解循環型２次電池としては、たとえばレドックスフロ
ー電池が知られている。この種のレドツクスフ［１−電
池では、流通型電解ヒルを用いており、電極活物質を含
む電解液が、電解液タンクと流通型電解セルとの間を循
環して充放電が行なわれる。電解液としては、たとえば
塩酸が用いられ、電極活物質としては、たとえばＦｅＣ
１ｚおよびＣｒＣＱａなどが用いられている。[Prior Art] As an electrolytic circulation type secondary battery, for example, a redox flow battery is known. This type of redox battery uses a flow-through type electrolytic hill, and charging and discharging is performed by circulating an electrolytic solution containing an electrode active material between an electrolyte tank and a flow-through electrolytic cell. As the electrolyte, for example, hydrochloric acid is used, and as the electrode active material, for example, FeC
1z and CrCQa are used.
レドックスフロー電池は、特に電力貯蔵用２次電池とし
て開発が進められており、その発生電圧を高める必要が
あるため、セルを直列に接続した多段接続型のものが提
唱されている。Redox flow batteries are being developed particularly as secondary batteries for power storage, and since it is necessary to increase the generated voltage, a multi-stage connection type in which cells are connected in series has been proposed.
第７図に、多段接続型のレドックスフロー電池の概略構
成図を示す。第７図において、単位セルは、隔膜１なら
びに該隔膜１の両側に設けられる電池反応をする正極２
および負極３から構成されている。単位セルは、双極板
４を介して直列に多段接続されている。単位セルは、隔
膜１により正極側と負極側に°分けられている。単位セ
ル内の正極側には、正極液流入路６および正極液流出路
７がそれぞれ接続されており、該正極液流入路６および
該正極液流出路７は正極液タンク５に接続されている。FIG. 7 shows a schematic configuration diagram of a multi-stage connection type redox flow battery. In FIG. 7, a unit cell includes a diaphragm 1 and positive electrodes 2 provided on both sides of the diaphragm 1 for battery reaction.
and a negative electrode 3. The unit cells are connected in series in multiple stages via bipolar plates 4. The unit cell is divided into a positive electrode side and a negative electrode side by a diaphragm 1. A cathode liquid inflow path 6 and a cathode liquid outflow path 7 are connected to the positive electrode side of the unit cell, respectively, and the cathode liquid inflow path 6 and the cathode liquid outflow path 7 are connected to the cathode liquid tank 5. .
単位セル内の負極側も同様に、負極液流入路９および負
極液流出路１０が接続されており、該負極液流入路９お
よび該負極液流出路１０は負極液タンク８にそれぞれ接
続されている。Similarly, on the negative electrode side in the unit cell, a negative electrode liquid inflow path 9 and a negative electrode liquid outflow path 10 are connected, and the negative electrode liquid inflow path 9 and the negative electrode liquid outflow path 10 are respectively connected to the negative electrode liquid tank 8. There is.
充放電動作に際し、正極液は正極液タンク５から正極液
流入路６を通りヒル内の正極側に供給される。供給され
た正極液は、電池反応後止極液流出路７を通り再び正極
液タンク５に戻される。負極液も同様にして、負極液タ
ンク８から負極液流入路９を通り、セル内の負極側に供
給される。供給された負極液は、電池反応後負極液流出
路１０を通り再び負極液タンク８内に戻される。多段接
続型レドックス７０−電池のセル構造についてさらに説
明するため、第６図を示す。During charging and discharging operations, the positive electrode liquid is supplied from the positive electrode tank 5 to the positive electrode side within the hill through the positive electrode liquid inflow path 6. After the battery reaction, the supplied positive electrode liquid passes through the stopper liquid outflow path 7 and is returned to the positive electrode liquid tank 5 again. Similarly, the negative electrode liquid is supplied from the negative electrode liquid tank 8 through the negative electrode liquid inlet path 9 to the negative electrode side in the cell. After the battery reaction, the supplied negative electrode liquid passes through the negative electrode liquid outflow path 10 and is returned into the negative electrode liquid tank 8. To further explain the cell structure of the multi-stage connection type redox 70-battery, FIG. 6 is shown.
第６図は、多段接続型のレドックス７０−電池のセル構
造を示す分解斜視図である。隔膜１の両側には、電池反
応する正極２および負極３が位置している。該正極２の
まわりには、枠体１２が位置し、該正極２を支持してい
る。負極３のまわりにも同様に、枠体１３が位置し、該
負極３を支持している。単位セルは、隔膜１、正極２お
よび負極３ならびにその枠体１２および１３から構成さ
れている。この単位セルを直列に接続させるため、双］
セ板４ａ、４ｂを介して積層されている。該双極板４ａ
、４ｂは、導電板および導電板を囲む枠体１４．１１か
ら構成されている。FIG. 6 is an exploded perspective view showing the cell structure of a multi-stage connection type redox 70-battery. A positive electrode 2 and a negative electrode 3 for battery reaction are located on both sides of the diaphragm 1. A frame 12 is positioned around the positive electrode 2 and supports the positive electrode 2. Similarly, a frame 13 is positioned around the negative electrode 3 and supports the negative electrode 3. The unit cell is composed of a diaphragm 1, a positive electrode 2, a negative electrode 3, and frames 12 and 13 thereof. In order to connect these unit cells in series,
They are laminated with separate plates 4a and 4b interposed therebetween. The bipolar plate 4a
, 4b consists of a conductive plate and a frame 14.11 surrounding the conductive plate.
枠体１２には、ａ通孔６ｂ、７ｂ、９ｂ、１０ｂが形成
されており、枠体１３にも同様に、貫通孔６ｄ、７ｄ、
９ｄ、１０ｄが形成されている。The frame body 12 is formed with through holes 6b, 7b, 9b, and 10b, and the frame body 13 is similarly formed with through holes 6d, 7d, and
9d and 10d are formed.
また、双極板４ａの枠体１４にも、貫通孔６ａ。The frame 14 of the bipolar plate 4a also has a through hole 6a.
７ａ 、９ａ 、１０ａが形成されている。それぞれの
貫通孔は、積層された際正極液流入路６．正極液流出路
７．負極液流入路９および負極液流出路１０の一部をそ
れぞれ形成する。7a, 9a, and 10a are formed. When stacked, each through hole serves as a positive electrode liquid inlet channel 6. Positive electrode liquid outflow path7. A part of the negative electrode liquid inflow path 9 and a part of the negative electrode liquid outflow path 10 are respectively formed.
枠体１４には、正極液を正ｔｆｉ ２に供給するため貫
通孔６ａに通じた流入口２０と、正極液と正極液流出路
７に排出するため貫通孔７ａに通じた流出口２１が形成
されている。隣接する単位セルの双極板４ｂの枠体１１
にも同様に、負極液の流入口２２および流出口２３が形
成されている。枠体１２と正極２との間には、正８ｉ２
の端縁に沿ってスリット部１５．１６が形成されている
。枠体１３においても同様に、負極３との間に、負極３
の端縁に沿ってスリット部１７．１８がそれぞれ形成さ
れている。The frame body 14 is formed with an inlet 20 communicating with the through hole 6a for supplying the positive electrode liquid to the positive TFI 2, and an outlet 21 communicating with the through hole 7a for discharging the positive electrode liquid and the positive electrode liquid outlet passage 7. has been done. Frame 11 of bipolar plate 4b of adjacent unit cell
Similarly, an inlet 22 and an outlet 23 for the negative electrode liquid are formed. Between the frame 12 and the positive electrode 2, there is a positive 8i2
A slit portion 15,16 is formed along the edge of. Similarly, in the frame 13, the negative electrode 3 is connected between the negative electrode 3 and the negative electrode 3.
A slit portion 17,18 is formed along the edge of each of the holes.
以上の単位セルの構造においては、正極側と負極側が同
様に構成されているので、以下正極側におＧノる正極液
の流れについてのみ説明する。正極液は、正極液流入路
６の中を通って流れ、該正極液流入路の途中に形成され
る流入口２ｏがら正極２の設けられたセル内に流入する
。流入した正極液は、スリット部１５に沿って横方向に
流れるとともに、流出口２１の設けられた側に向がって
正極２上を電池反応しながら流れる。流出口２１側の正
極２の端縁に到達した正極液は、スリット部１６に沿っ
て集められ、流出口２１がら正極液流出路７に排出され
る。In the above unit cell structure, since the positive electrode side and the negative electrode side are configured in the same way, only the flow of the positive electrode liquid to the positive electrode side will be described below. The positive electrode liquid flows through the positive electrode liquid inflow path 6, and flows into the cell in which the positive electrode 2 is provided through an inlet 2o formed in the middle of the positive electrode liquid inflow path. The inflowing positive electrode liquid flows laterally along the slit portion 15 and also flows toward the side where the outlet 21 is provided while reacting on the positive electrode 2 . The positive electrode liquid that has reached the edge of the positive electrode 2 on the side of the outlet 21 is collected along the slit portion 16 and is discharged from the outlet 21 into the positive electrode outlet path 7 .
［発明が解決しようとする問題点１
以上説明したように、単位セルを多段接続して発生電圧
を高めることは従来から行なわれているが、電力貯蔵用
としては、これどともに単位セル内での充放電量を大き
くする必要もある。したがって、単位セルを大形化すな
わち電極面積を大きくする必要が生じてくる。[Problem to be Solved by the Invention 1] As explained above, increasing the generated voltage by connecting unit cells in multiple stages has been conventionally done, but for power storage, both of these methods It is also necessary to increase the amount of charge and discharge. Therefore, it becomes necessary to increase the size of the unit cell, that is, to increase the electrode area.
しかしながら、このように大形化しようとすると、双極
板の導電板を大きくしなければならず、グラファイト板
などの導電板は一般に高価であるため、電池全体が高価
格化するという問題を生じる。また、電池全体において
導電板が占める重１Ｂの割合は比較的大きく、したがっ
て導電板を大形化すると、電池全体の重量が大きくなる
という問題も生じる。However, increasing the size of the battery requires increasing the size of the bipolar conductive plate, and since conductive plates such as graphite plates are generally expensive, the battery as a whole becomes expensive. In addition, the proportion of the weight 1B occupied by the conductive plate in the entire battery is relatively large, and therefore, when the conductive plate is made larger, a problem arises in that the weight of the entire battery increases.
そこで、導電板の厚みは大ぎくせず、面積のみを大きく
することが必要になる。しかしながら、面積のみを大き
くし厚みを薄いままにすると、新たな問題を生じる。こ
の問題を説明するため、第８図を示す。第８図は、従来
のレドックスフロー電池の双極板の枠体の一部を示す斜
視図である。Therefore, it is necessary to increase only the area without increasing the thickness of the conductive plate. However, if only the area is increased and the thickness is kept small, a new problem arises. To explain this problem, FIG. 8 is shown. FIG. 8 is a perspective view showing a part of a frame of a bipolar plate of a conventional redox flow battery.
導電板は、この枠体１４の内周面１４ａに接触して支持
されるのであるが、導電板の厚みが大きくならないど寸
れば、導電板と枠体の内周面１４ａとの間の接着部分の
面積が小さくなり、この接着部分の強度が不足するとい
う問題を生じる。また、導電板の厚みをたとえば約１ミ
リとし、これとともに枠体の厚みも約１ミリにするとす
れば、第８図に図示されているような流入口２０の形成
も困難となる。The conductive plate is supported in contact with the inner peripheral surface 14a of the frame 14, but if the thickness of the conductive plate is not increased, the gap between the conductive plate and the inner peripheral surface 14a of the frame must be reduced. A problem arises in that the area of the bonded portion becomes smaller and the strength of this bonded portion is insufficient. Further, if the conductive plate is made to have a thickness of about 1 mm, and the frame is also made to have a thickness of about 1 mm, it becomes difficult to form the inlet 20 as shown in FIG. 8.
それゆえに、この発明の目的は、このような導電板の大
形化に伴なう従来の問題を解消するためなされたもので
あり、電力貯蔵用として最適な電解液循環型２次電池を
提供することにある。Therefore, an object of the present invention was to solve the conventional problems associated with the increase in the size of conductive plates, and to provide an electrolyte circulation type secondary battery that is optimal for power storage. It's about doing.
［問題点を解決するための手段および作用］この発明の
電解液循環型２次電池では、ｌ電板が枠体ににり挾まれ
て支持されていることを特徴としている。従来のように
、導電板の外周面と枠体の内周面との間で接着して支持
する場合には、導電板の厚みと枠体の厚みをほぼ同じに
する必要があり、導電板の厚みを薄くするにつれ枠体と
の接触面積が小さくなり、かつ枠体の厚みも小さくなっ
て流出口または流入口の形成が難しくなった。[Means and effects for solving the problems] The electrolyte circulation type secondary battery of the present invention is characterized in that the electric plate is supported by being sandwiched between the frames. When supporting the conductive plate by adhering it between the outer circumferential surface of the conductive plate and the inner circumferential surface of the frame as in the past, it is necessary to make the thickness of the conductive plate and the frame almost the same. As the thickness of the inlet becomes thinner, the contact area with the frame becomes smaller, and the thickness of the frame also becomes smaller, making it difficult to form an outlet or an inlet.
これに対して、この発明によれば、導電板が枠体により
挾まれて支持されるため、導電板の厚みが薄くなっても
枠体との間の接触面積が小さくなることはない。また、
枠体の厚みも導電板の厚みに合わせて小さくする必要が
ないため、流出口および流入口の形成も困難になること
はない。On the other hand, according to the present invention, since the conductive plate is supported by the frame, the contact area between the conductive plate and the frame does not become smaller even if the conductive plate becomes thinner. Also,
Since it is not necessary to reduce the thickness of the frame according to the thickness of the conductive plate, it is not difficult to form the outflow port and the inflow port.
［実施例］
第１図は、この発明の一実施例を示す分解斜視図である
。第１図に示す双極板３０の枠体３１には、導電板３２
を嵌めることのできる大きさの枠が形成されており、こ
の枠の周囲には、導電板３２を挾持するための挾持部３
４が枠体３１の中央に向って延びるように形成されてい
る。また、もう一方の枠体３３にも、同様に′Ｓ電板３
２を嵌め入れることのできる大きさの枠が形成されてお
り、この枠の周囲からは、枠の中央に向かって延びる挟
持部３６が形成されている。[Embodiment] FIG. 1 is an exploded perspective view showing an embodiment of the present invention. The frame 31 of the bipolar plate 30 shown in FIG.
A frame is formed with a size that allows the conductive plate 32 to be fitted thereinto, and a clamping portion 3 for clamping the conductive plate 32 is formed around the frame.
4 is formed to extend toward the center of the frame body 31. Similarly, the 'S electric plate 3 is also attached to the other frame 33.
2 is formed, and a holding portion 36 is formed from the periphery of this frame to extend toward the center of the frame.
導電板３２は、枠体３１の挾持部３４および枠体３３の
挟持部３６に挾まれることにより支持される。挟持部３
４．３６と導電板３２は、接着剤により接着され、枠体
３１．３３による支持を補強するとともに、導電板３２
を境にして一方から他方に電解液が漏れることのないよ
うにされている。The conductive plate 32 is supported by being held between the holding parts 34 of the frame 31 and the holding parts 36 of the frame 33. Holding part 3
4.36 and the conductive plate 32 are bonded with adhesive, reinforcing the support by the frame 31.33, and the conductive plate 32
The electrolyte is prevented from leaking from one side to the other.
枠体３１および枠体３３には、同じ位置に貫通孔３７，
３９が形成されており、枠体３１には該貫通孔３７に通
じる流入口３８が形成されている。The frame body 31 and the frame body 33 have through holes 37 at the same position.
39 is formed in the frame 31, and an inlet 38 communicating with the through hole 37 is formed in the frame body 31.
また重ね合わされた際、流入口３８が位置する導電板３
２の部分には、切欠３５が形成されている。Also, when stacked, the conductive plate 3 where the inlet 38 is located
A notch 35 is formed in the portion 2.
貫通孔３７．３９を流れる電解液は、流入口３８を通り
、切欠３５からセル内部（第１図においては導電板３２
の図面上側に構成されるセル内部）に導かれる。The electrolytic solution flowing through the through holes 37 and 39 passes through the inlet 38 and from the notch 35 to the inside of the cell (in FIG. 1, the conductive plate 32
(inside the cell configured at the top of the drawing).
この実施例において、２つの枠体の挟持部はいずれもそ
の厚みを枠体よりも薄クシて、導電板を挟持できるよう
に形成されているが、一方の枠体の挟持部のみを導電板
の厚み分だけ薄くし、他方の枠体の挾持部は枠体ど同じ
厚みに構成して、導電板を挟持させてもよい。In this embodiment, the clamping parts of the two frames are both thinner in thickness than the frames and are formed so that they can clamp the conductive plate, but only the clamping part of one frame is made thinner than the frame. The holding portion of the other frame may have the same thickness as that of the frame, and the conductive plate may be held therebetween.
この発明に用いられる導電板としては、従来から使用さ
れているグラファイト板や、あるいは樹脂中にカーボン
を練り込んで成形されたいわゆるセミグラシカ−ボン板
なども使用することができる。特に、セミグラシカ−ボ
ン板はグラファイト板に比べ機械的強度が高いので、厚
みを薄クシてその機械的強度が問題となる場合には、有
効に利用され１りる。また、これらのもの以外でも、耐
酸性を有し、かつ電解液を透過させないものであれば、
金属板や導電性プラスチック板などを用いることもでき
る。As the conductive plate used in the present invention, a conventionally used graphite plate, or a so-called semi-glass carbon plate formed by kneading carbon into resin can be used. In particular, semi-glossic carbon plates have higher mechanical strength than graphite plates, so they can be effectively used when the thickness is reduced and the mechanical strength becomes a problem. In addition to these materials, as long as they have acid resistance and do not allow the electrolyte to pass through,
A metal plate, a conductive plastic plate, etc. can also be used.
この発明に用いられる枠体としては、塩化ビニル樹脂等
を使用することができるが、使用する電解液に応じた耐
酸性や絶縁性を有すればその他の材質も使用可能である
ことは言うまでもない。As the frame used in this invention, vinyl chloride resin etc. can be used, but it goes without saying that other materials can also be used as long as they have acid resistance and insulation properties suitable for the electrolyte used. .
第２図〜第４図は、この発明の他の実施例を示す正面図
であり、第２図は枠体の一方、第３図は導電板、第４図
は枠体の他方をそれぞれ示している。第２図において、
４１は枠体、４７ａ〜４７ｆは貫通孔、４８ｂは流出口
、４８ｄ、４８ｆは流入口、４４は挟持部を示している
。第３図において、４２は導電板、４５ａ〜４５ｆは切
欠を示している。第４図において、４３は枠体、４６は
挾持部、４９ａ 〜４９ｆは貫通孔、４８ａ 、４８Ｃ
は流出口、４８ｅは流入口を示している。Figures 2 to 4 are front views showing other embodiments of the invention, with Figure 2 showing one side of the frame, Figure 3 showing the conductive plate, and Figure 4 showing the other side of the frame. ing. In Figure 2,
41 is a frame body, 47a to 47f are through holes, 48b is an outlet, 48d and 48f are inlets, and 44 is a clamping portion. In FIG. 3, 42 indicates a conductive plate, and 45a to 45f indicate notches. In FIG. 4, 43 is a frame body, 46 is a holding part, 49a to 49f are through holes, 48a, 48C
48e indicates an outflow port, and 48e indicates an inflow port.
この実施例の双極板は、第２図に示す枠体４１を、第３
図に示す導電板４２の下に、第４図に示す枠体４３を第
３図に示す導電板４２の上に配置し、導電板４２を枠体
４１．４３で挾持することにより構成される。第２図に
おいて、一点鎖線で示す部分は重ね合わせた際の導電板
の外周の位置を示している。同様に、第４図においても
、一点鎖線は重ね合わせた際の導電板の外周の位置を示
している。In the bipolar plate of this embodiment, the frame 41 shown in FIG.
The frame body 43 shown in FIG. 4 is placed on the conductive plate 42 shown in FIG. 3 below the conductive plate 42 shown in the figure, and the conductive plate 42 is held between the frames 41 and 43. . In FIG. 2, the portion indicated by a chain line indicates the position of the outer periphery of the conductive plates when they are overlapped. Similarly, in FIG. 4, the dashed-dotted line indicates the position of the outer periphery of the conductive plates when they are overlapped.
貫通孔４７ｅ、４９ｅを流れる電解液は、流入口４８Ｃ
を通り、第３図に丞す導電板４２の図面手前側に構成さ
れるセル内に流入し、流出口４８ａ、４８ｃから、貫通
孔４９ａ 、４９Ｃを通り流出される。また貫通孔４７
ｄ 、４９ｄおよび貫通孔４７１，４９ｆを通る電解液
は、流入口４８ｄ。The electrolytic solution flowing through the through holes 47e and 49e flows through the inlet 48C.
It flows into the cell formed on the front side of the conductive plate 42 shown in FIG. 3, and flows out from the outlet ports 48a and 48c and through the through holes 49a and 49C. Also, the through hole 47
The electrolytic solution passes through the inlet 48d and the through holes 471 and 49f.
４８ｆを通り、第３図に示す導電板４２の図面奥側に構
成されるセル内に流入し、流出口４８ｂから、貫通孔４
７ｂを通り流出される。48f, flows into the cell configured on the back side of the conductive plate 42 shown in FIG.
It flows out through 7b.
第２図〜第４図に示した実施例では、流出口および流入
口がそれぞれ３箇所形成されているが、この発明はこの
ような数に限定されるものでないことは言うまでもない
。In the embodiment shown in FIGS. 2 to 4, three outflow ports and three inflow ports are formed, but it goes without saying that the present invention is not limited to such a number.
以上の実施例では、導電板を別個に成形された枠体で挾
むことによる挾持しているが、この発明では、たとえば
枠体形状を有した型に１ｆｆｆ板を置き、ここに液状樹
脂等を注入して、注型法により枠体を成形させると同時
に導電板をこの成形された枠体で挾持させてもよい。In the above embodiments, the conductive plate is held between separately molded frames, but in the present invention, for example, a 1fff plate is placed in a mold having a frame shape, and liquid resin etc. may be injected and molded into a frame by a casting method, and at the same time the conductive plate may be held between the molded frame.
第５図は、この発明のさらに他の実施例を示寸斜視図で
あり、双極板の枠体内に電極を収納した状態を示し、で
いる。第５図において、隔膜１の両側に配置された双極
板５０，６０には、それぞれ図示されない導電板が枠体
５１．５３および枠体６１．６３により挾持されており
、導電板の上には正極２およびその裏側で図示されない
負極が配置している。これらの正極および負極は、枠体
の挟持部の厚みによって形成される枠内の凹部に収納さ
れている。したがって、このような構造にすることによ
り、電極を支持する枠体が不要となるため、簡易な構造
とすることができ、また低価格化も図ることができる。FIG. 5 is a dimensional perspective view of still another embodiment of the present invention, showing a state in which the electrodes are housed within the frame of the bipolar plate. In FIG. 5, conductive plates (not shown) are held between bipolar plates 50 and 60 placed on both sides of the diaphragm 1 by frames 51.53 and 61.63, respectively. A positive electrode 2 and a negative electrode (not shown) are arranged on the back side thereof. These positive and negative electrodes are housed in a recess within the frame formed by the thickness of the clamping portion of the frame. Therefore, by adopting such a structure, a frame for supporting the electrode is not required, so that the structure can be simplified and the cost can be reduced.
［発明の効果〕
以上説明したように、この発明によれば、従来電極の大
形化に伴なう問題とされている電池の重量増加や高価格
化を解消することができる。したがって、この発明は、
電力貯蔵用２次電池として有効に利用され得るものであ
る。[Effects of the Invention] As described above, according to the present invention, it is possible to solve the problems of the increase in weight and the increase in price of batteries, which have conventionally been caused by the increase in the size of electrodes. Therefore, this invention
It can be effectively used as a secondary battery for power storage.
なお、実施例では、電解液循環型２次電池としてレドッ
クス７０−電池を例示して説明したが、この発明はこの
ようなレドックス７０−電池に限定されるものではなく
、電解液が循環して充放電するタイプの２次電池であれ
ばどのようなものにも応用され得るものである。In the examples, a Redox 70-battery was explained as an example of an electrolyte circulation type secondary battery, but the present invention is not limited to such a Redox 70-battery. It can be applied to any type of secondary battery that can be charged and discharged.
第１図は、この発明の一実施例を示す分解斜視図である
。第２図は、この発明の他の実施例の枠体の一方を示す
正面図である。第３図は、同じくこの発明の他の実施例
の導電板を示す正面図である。第４図は、同じくこの発
明の他の実施例の枠体の他方を示す正面図である。第５
図は、この発明のさらに他の実施例の双極板の枠体内に
電極を収納した状態を示す斜視図である。第６図は、従
来のレドックスフロー電池の単位セル構造を示す分解斜
視図である。第７図は、従来のレドックス７０−電池を
示す概略構成図である。第８図は、従来のレドックス７
０−電池の双極板の枠体を示す斜視図である。
図において、３０．５０．６０は双極板、３１゜３３．
４１．４３．５１．５３．６１．６３は枠体、３２．４
２は導電板、３４．３６．４４．４６は枠体の挟持部を
示す。FIG. 1 is an exploded perspective view showing an embodiment of the present invention. FIG. 2 is a front view showing one side of the frame of another embodiment of the invention. FIG. 3 is a front view showing a conductive plate according to another embodiment of the present invention. FIG. 4 is a front view showing the other side of the frame of another embodiment of the invention. Fifth
The figure is a perspective view showing a state in which electrodes are housed within the frame of a bipolar plate according to still another embodiment of the present invention. FIG. 6 is an exploded perspective view showing the unit cell structure of a conventional redox flow battery. FIG. 7 is a schematic diagram showing a conventional redox 70-battery. Figure 8 shows the conventional redox 7
FIG. 2 is a perspective view showing the frame of the bipolar plate of the 0-battery. In the figure, 30.50.60 are bipolar plates, 31°33.
41.43.51.53.61.63 is the frame, 32.4
Reference numeral 2 indicates a conductive plate, and reference numerals 34, 36, 44, and 46 indicate a clamping portion of the frame.
Claims (1)
ルを構成し、導電板を枠体で支持してなる双極板を介し
て前記単位セルを積層した電解液循環型２次電池におい
て、 前記導電板が枠体により挾まれて支持されていることを
特徴とする、電解液循環型２次電池。(1) In an electrolyte circulation type secondary battery in which a unit cell is constructed by arranging reacting electrodes on both sides of a diaphragm, and the unit cells are stacked via a bipolar plate formed by supporting a conductive plate with a frame. . An electrolyte circulation type secondary battery, characterized in that the conductive plate is sandwiched and supported by a frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62049474A JPH0821400B2 (en) | 1987-03-04 | 1987-03-04 | Electrolyte circulation type secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62049474A JPH0821400B2 (en) | 1987-03-04 | 1987-03-04 | Electrolyte circulation type secondary battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63216271A true JPS63216271A (en) | 1988-09-08 |
| JPH0821400B2 JPH0821400B2 (en) | 1996-03-04 |
Family
ID=12832148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62049474A Expired - Lifetime JPH0821400B2 (en) | 1987-03-04 | 1987-03-04 | Electrolyte circulation type secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0821400B2 (en) |
Cited By (6)
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|---|---|---|---|---|
| WO2002101864A1 (en) * | 2001-06-12 | 2002-12-19 | Sumitomo Electric Industries, Ltd. | Cell frame for redox flow cell and redox flow cell |
| WO2002101862A1 (en) * | 2001-06-12 | 2002-12-19 | Sumitomo Electric Industries, Ltd. | Cell frame for redox-flow cell and redox-flow cell |
| JP2015520484A (en) * | 2012-05-10 | 2015-07-16 | イマジー パワー システムズ，インコーポレーテッド | Vanadium flow battery |
| JP2015215948A (en) * | 2014-05-07 | 2015-12-03 | 旭化成イーマテリアルズ株式会社 | Cell laminate and storage battery |
| JPWO2016072191A1 (en) * | 2014-11-06 | 2017-08-17 | 住友電気工業株式会社 | Battery cell and redox flow battery |
| WO2019167143A1 (en) * | 2018-02-27 | 2019-09-06 | 住友電気工業株式会社 | Frame body, cell frame, cell stack, and redox flow battery |
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| JPS62229660A (en) * | 1986-03-29 | 1987-10-08 | Mitsubishi Plastics Ind Ltd | Manufacture of electrode plate for cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6288278A (en) * | 1985-10-15 | 1987-04-22 | Sumitomo Electric Ind Ltd | Electrolyte circulation type secondary cell |
| JPS62229660A (en) * | 1986-03-29 | 1987-10-08 | Mitsubishi Plastics Ind Ltd | Manufacture of electrode plate for cell |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002101864A1 (en) * | 2001-06-12 | 2002-12-19 | Sumitomo Electric Industries, Ltd. | Cell frame for redox flow cell and redox flow cell |
| WO2002101862A1 (en) * | 2001-06-12 | 2002-12-19 | Sumitomo Electric Industries, Ltd. | Cell frame for redox-flow cell and redox-flow cell |
| US7670719B2 (en) | 2001-06-12 | 2010-03-02 | Sumitomo Electric Industries, Ltd. | Cell stack for redox flow battery, and redox flow battery |
| JP2015520484A (en) * | 2012-05-10 | 2015-07-16 | イマジー パワー システムズ，インコーポレーテッド | Vanadium flow battery |
| JP2015215948A (en) * | 2014-05-07 | 2015-12-03 | 旭化成イーマテリアルズ株式会社 | Cell laminate and storage battery |
| JPWO2016072191A1 (en) * | 2014-11-06 | 2017-08-17 | 住友電気工業株式会社 | Battery cell and redox flow battery |
| WO2019167143A1 (en) * | 2018-02-27 | 2019-09-06 | 住友電気工業株式会社 | Frame body, cell frame, cell stack, and redox flow battery |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0821400B2 (en) | 1996-03-04 |
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