JP2552737B2 - Method for firing beta-alumina tube for sodium-sulfur battery - Google Patents
Method for firing beta-alumina tube for sodium-sulfur batteryInfo
- Publication number
- JP2552737B2 JP2552737B2 JP1225015A JP22501589A JP2552737B2 JP 2552737 B2 JP2552737 B2 JP 2552737B2 JP 1225015 A JP1225015 A JP 1225015A JP 22501589 A JP22501589 A JP 22501589A JP 2552737 B2 JP2552737 B2 JP 2552737B2
- Authority
- JP
- Japan
- Prior art keywords
- beta
- alumina tube
- molded body
- sodium
- firing
- 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 - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/36—Accumulators not provided for in groups H01M10/05-H01M10/34
- H01M10/39—Accumulators not provided for in groups H01M10/05-H01M10/34 working at high temperature
- H01M10/3909—Sodium-sulfur cells
- H01M10/3918—Sodium-sulfur cells characterised by the electrolyte
-
- 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
- Y02E60/10—Energy storage using batteries
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明はナトリウム−硫黄電池用ベータアルミナ管の
焼成方法に係り、更に詳しくは、薄肉状に有底円筒状ベ
ータアルミナ管成形体を焼成することができるナトリウ
ム−硫黄電池用ベータアルミナ管の焼成方法に関する。TECHNICAL FIELD The present invention relates to a method for firing a beta-alumina tube for a sodium-sulfur battery, and more specifically, firing a bottomed cylindrical beta-alumina tube molded body into a thin wall. And a method for calcination of a beta-alumina tube for a sodium-sulfur battery.
［従来の技術］ ナトリウム−硫黄電池は、一方に陰極活物質で、ある
溶融金属ナトリウム、他方には陽極活物質である溶融硫
黄を配し、両者をナトリウムイオンに対して選択的な透
過性を有するベータアルミナ固体電解質で隔離し、300
〜350℃で作動させる高温二次電池である。[Prior Art] A sodium-sulfur battery has a cathode active material on one side and a molten metal sodium on the other side, and a molten sulfur on the other side as an anode active material, and both have a selective permeability to sodium ions. Isolate with beta-alumina solid electrolyte having 300
It is a high temperature secondary battery operated at ~ 350 ° C.
このようなナトリウム−硫黄電池の構成は、例えば第
２図に示すように、陽極活物質である溶融硫黄Ｓを含浸
したカーボンフェルト等の陽極用導電材１を収容する円
筒状の陽極容器２と、該陽極容器２の上端部と例えばア
ルファアルミナ製の絶縁体リング３を介して連結され、
且つ溶融金属ナトリウムNaを貯留する陰極容器４と、前
記絶縁体リング３の内周部に接合され、且つナトリウム
イオンNa+を選択的に透過させる機能を有する有底円筒
状のベータアルミナ管５とからなっている。また、前記
陰極容器４の上蓋６の中央部には、陰極容器４を通して
下方向にベータアルミナ管５の底部付近まで延びた陰極
管７が貫通支持されている。The structure of such a sodium-sulfur battery is, for example, as shown in FIG. 2, a cylindrical anode container 2 for accommodating a conductive material 1 for an anode such as carbon felt impregnated with molten sulfur S as an anode active material. , Is connected to the upper end of the anode container 2 via an insulator ring 3 made of, for example, alpha alumina,
A cathode vessel 4 for storing molten metal sodium Na; and a bottomed cylindrical beta alumina tube 5 joined to the inner peripheral portion of the insulator ring 3 and having a function of selectively transmitting sodium ions Na +. Consists of A cathode tube 7 extending downward through the cathode container 4 to near the bottom of the beta-alumina tube 5 is penetratingly supported in the central portion of the upper lid 6 of the cathode container 4.
以上のような構成を有するナトリウム−硫黄電池にお
いて、放電時には溶融金属ナトリウムは電子を放出して
ナトリウムイオンとなり、これがベータアルミナ固体電
解質中を透過して陽極側に移動し、陽極の硫黄と外部回
路を通ってきた電子と反応して多硫化ナトリウムを生成
し、2V程度の電圧を発生する。充電時には放電とは逆に
ナトリウム及び硫黄の生成反応が起こる。In the sodium-sulfur battery having the above structure, when discharged, molten metal sodium releases an electron to become a sodium ion, which penetrates through the beta-alumina solid electrolyte and moves to the anode side, and sulfur of the anode and an external circuit. It reacts with the electrons that have passed through to form sodium polysulfide, generating a voltage of about 2V. On the contrary to discharging, during charging, a reaction of producing sodium and sulfur occurs.
このようにナトリウム−硫黄電池において、ベータア
ルミナ管は極めて重要な役割を果たしているものである
が、このベータアルミナ管の製造方法、特にベータアル
ミナ管を薄肉状のまま焼成することは困難であることが
知られている。Thus, in the sodium-sulfur battery, the beta-alumina tube plays a very important role, but it is difficult to manufacture this beta-alumina tube, especially to burn the beta-alumina tube in a thin-walled state. It has been known.
従来より、ベータアルミナ管の焼成方法として、ベー
タアルミナ管成形体の開口端側を下側にして焼成する方
法（いわゆる、置き焼き法。第３図参照）が知られてい
る。この置き焼き法では、ベータアルミナ管成形体の下
部は成形体の自重により座屈が生じ、真直度、真円度な
どの寸法公差が大きくなって薄肉管の製造は困難となっ
ている。BACKGROUND ART Conventionally, as a method of firing a beta-alumina tube, a method of firing with the open end side of the beta-alumina tube molded body facing downward (so-called so-called firing method, see FIG. 3) is known. In this stationary baking method, the lower part of the beta-alumina tube molded body is buckled due to the weight of the molded body, and dimensional tolerances such as straightness and roundness become large, making it difficult to manufacture a thin-walled tube.
また、上記置き焼き法の欠点を解消して薄肉管を製造
するため、第４図の如き吊り焼き法も知られている。Further, in order to solve the above-mentioned disadvantages of the stationary baking method and manufacture a thin-walled tube, a hanging baking method as shown in FIG. 4 is also known.
［発明が解決しようとする課題］ しかしながら、従来の吊り焼き法にあっては、第４図
に示すように、有底円筒状ベータアルミナ管成形体10に
孔８をあけ、該孔８に吊り棒９を通してベータアルミナ
管成形体10を吊りながら焼成しているため、ベータアル
ミナ管成形体10の孔８と吊り棒９とが接する部分に点荷
重がかかり、孔８の上部から吊り切れが生ずる恐れがあ
った。[Problems to be Solved by the Invention] However, in the conventional hanging baking method, as shown in FIG. 4, a hole 8 is made in a bottomed cylindrical beta-alumina tube molded body 10 and hanging is performed in the hole 8. Since the beta-alumina pipe molded body 10 is fired while being suspended through the rod 9, a point load is applied to the portion where the hole 8 of the beta-alumina pipe molded body 10 and the suspension rod 9 come into contact with each other, and the suspension breaks from the upper portion of the hole 8. I was afraid.
［課題を解決するための手段］ そこで、本発明者は、上記従来の焼成方法における問
題を解決し、吊り切れが生じず、しかも寸法公差の小さ
な薄肉状のベータアルミナ管の焼成が可能な方法を開発
すべく、種々検討を重ねた結果、本発明を完成したもの
である。[Means for Solving the Problems] Therefore, the present inventor has solved the problem in the above-described conventional firing method, and is capable of firing a thin-walled beta-alumina tube having no dimensional tolerance and having a small dimensional tolerance. As a result of various studies to develop, the present invention has been completed.
即ち、本発明によれば、以下に示す要件〜を有す
るナトリウム−硫黄電池用ベータアルミナ管の製造方法
が提供される。That is, according to the present invention, there is provided a method for producing a beta-alumina tube for a sodium-sulfur battery having the following requirements.
開口端部外側がテーパー状に形成された有底円筒状ベ
ータアルミナ管成形体を成形する。A bottomed cylindrical beta-alumina tube molded body having a tapered outer end is formed.
該ベータアルミナ管成形体をそのテーパー部形状に対
応した漏斗状の受け口を有する支持板に挿入して垂下す
るとともに、該ベータアルミナ管成形体をその外側から
密閉容器にて覆った後、焼成する。The beta-alumina tube molded body is inserted into a support plate having a funnel-shaped receiving port corresponding to the tapered shape and hung down, and the beta-alumina tube molded body is covered with a closed container from the outside and then fired. .
得られた焼成体からそのテーパー部を切断し、ナトリ
ウム−硫黄電池に用いる固体電解質管として得る。The taper portion is cut from the obtained fired body to obtain a solid electrolyte tube used in a sodium-sulfur battery.
なお、本発明においては、支持板が密閉容器と一体に
形成されることが好ましい。In the present invention, the support plate is preferably formed integrally with the closed container.
［作用］ 本発明では、ナトリウム−硫黄電池用の有底円筒状ベ
ータアルミナ管成形体をその開口端側を上側にして吊り
ながら焼成する、いわゆる吊り焼き法において、ベータ
アルミナ管成形体の開口端部外側をテーパー状に形成
し、ベータアルミナ管成形体をそのテーパー部形状に対
応した漏斗状の受け口を有する支持板に挿入して垂下す
ることを特徴としている。即ち、ベータアルミナ管成形
体を、その開口端部外側を支持板の漏斗状受け口により
受けて支持することにより、ベータアルミナ管成形体の
重量を面にて受ける。[Operation] In the present invention, the open end of the beta-alumina tube molded body is fired in a so-called hanging firing method, in which the bottomed cylindrical beta-alumina tube molded body for a sodium-sulfur battery is fired while hanging the open end side upward. The outside of the part is formed in a taper shape, and the beta-alumina tube molded body is inserted into a support plate having a funnel-shaped receiving port corresponding to the taper part shape and hung down. That is, the weight of the beta-alumina tube molded body is received by the surface by receiving and supporting the outside of the open end of the beta-alumina tube molded body by the funnel-shaped receiving port of the support plate.
このようにベータアルミナ管成形体の重量を漏斗状受
け口により面荷重として受けるため、成形体の吊り切れ
は生じず、しかも寸法公差の小さな薄肉状のベータアル
ミナ管の焼成を行なうことができる。Since the weight of the beta-alumina tube molded body is thus received as a surface load by the funnel-shaped receiving port, the molded body is not suspended and the thin-walled beta-alumina tube having a small dimensional tolerance can be fired.
薄肉状にベータアルミナ管が焼成されると、イオンの
伝導抵抗を下げてナトリウム−硫黄電池の充放電効率を
高めることができ、電池を小型化し、性能を向上させる
ことができる。When the beta-alumina tube is fired in a thin shape, the conduction resistance of ions can be lowered to improve the charge / discharge efficiency of the sodium-sulfur battery, and the battery can be downsized and its performance can be improved.
なお、本発明のベータアルミナ管成形体の成形方法と
しては、ドライバッグ（乾式）静水圧プレス成形、ウエ
ットバッグ（湿式）静水圧プレス成形、押出し成形、加
圧鋳込み成形等の何れの方法も適用することができる。Any method such as dry bag (dry) hydrostatic press molding, wet bag (wet) hydrostatic press molding, extrusion molding, and pressure casting can be applied as the method for molding the beta-alumina pipe molded body of the present invention. can do.
また、ベータアルミナ管成形体を垂下して支持する支
持板は、ベータアルミナ管成形体の開口端部外側のテー
パー部形状に対応した形状の漏斗状受け口を有するもの
で、ベータアルミナ管成形体を１個または複数個垂下す
る。この支持板は、通常ベータアルミナ管成形体をその
外側から覆う焼成容器の一部として形成される。In addition, the support plate that hangs down and supports the beta-alumina tube molded body has a funnel-shaped receiving port having a shape corresponding to the taper portion outside the opening end of the beta-alumina tube molded body. Hanging one or more. This support plate is usually formed as a part of a firing container that covers the beta-alumina tube molding from the outside.
焼成容器の材質としては、アルミナ、マグネシアまた
はスピネルが好ましい。これらの材質のものを用いた場
合は、高温過程でのベータアルミナから飛散するNa2Oと
反応せず容器内が適度のアルカリ雰囲気となりベータア
ルミナ管成形体からのNa2Oの過剰の飛散が抑制される。Alumina, magnesia or spinel is preferable as the material for the firing container. When using those materials, Na 2 O that scatters from beta alumina in the high temperature process does not react and the inside of the container becomes an appropriate alkaline atmosphere, and excessive scattering of Na 2 O from the beta alumina tube molded body occurs. Suppressed.
次に、ベータアルミナ管成形体の焼成に際しては、ベ
ータアルミナ管成形体と焼成容器とは近接して配置さ
れ、その間隔は約２〜5mm程度が好ましい。間隔が大き
くなり過ぎると、ベータアルミナ管成形体からのNa2Oの
揮散が増大する。また、ベータアルミナ管成形体を複数
垂下する場合、その間隔も約２〜5mm程度が好ましい。Next, when firing the beta-alumina tube molded body, the beta-alumina tube molded body and the firing container are disposed in close proximity to each other, and the distance between them is preferably about 2 to 5 mm. When the interval becomes too large, the volatilization of Na 2 O from the beta-alumina tube molded body increases. In addition, when a plurality of beta-alumina tube molded bodies are hung, the distance between them is preferably about 2-5 mm.
上記のように、支持板に垂下されたベータアルミナ管
成形体の外周側から焼成容器にて覆った後焼成すること
によりベータアルミナ管が製造されるが、その焼成は電
気炉又はガス炉により約1550〜1650℃の範囲に制御さ
れ、約0.5〜１時間行なわれる。As described above, the beta-alumina tube is manufactured by covering it with a baking container from the outer peripheral side of the beta-alumina tube molded body hanging on the support plate and then baking it, but the baking is performed by an electric furnace or a gas furnace. The temperature is controlled in the range of 1550 to 1650 ° C., and it is carried out for about 0.5 to 1 hour.
［実施例］ 次に本発明を図示の実施例に基づいて詳細に説明する
が、本発明はこれら実施例に限られるものではない。[Examples] Next, the present invention will be described in detail based on the illustrated examples, but the present invention is not limited to these examples.
第１図はベータアルミナ管成形体10を焼成容器11内に
挿入・垂下した状態を示す断面説明図で、ベータアルミ
ナ管成形体10はその開口部を上側にし、焼成容器11上部
の支持板12に形成した受け口13内に挿入・垂下される。
ここで、ベータアルミナ管成形体10は開口端部の外側部
14をテーパー状に形成し、支持板12に形成され成形体10
のテーパー状外側部14に対応した漏斗状の受け口13にて
支持される。ベータアルミナ管成形体10が受け口13にて
支持された後、上方より蓋15で焼成容器11は密閉され、
焼成が開始される。FIG. 1 is a cross-sectional explanatory view showing a state in which the beta-alumina tube molded body 10 is inserted and hung down in the firing container 11, and the opening of the beta-alumina tube molded body 10 is on the upper side, and the support plate 12 above the firing container 11 is shown. It is inserted and drooped in the receiving port 13 formed in.
Here, the beta-alumina tube molded body 10 is the outer side of the open end.
14 is formed in a taper shape and is formed on the support plate 12 to form a molded body 10.
It is supported by a funnel-shaped receiving port 13 corresponding to the tapered outer portion 14 of the. After the beta-alumina tube molded body 10 is supported by the receiving port 13, the firing container 11 is sealed with a lid 15 from above,
Firing is started.
尚、ベータアルミナ管の開口端部のテーパー部分は焼
成後切断され、ストレート部を製品として、ナトリウム
−硫黄電池用の固体電解質管を得る。The tapered portion of the open end of the beta alumina tube is cut after firing, and the straight portion is used as a product to obtain a solid electrolyte tube for a sodium-sulfur battery.
また、蓋15も焼成容器11と同材質であることが好まし
く、その材質としては、アルミナ、マグネシアまたはス
ピネルが好ましい。焼成に際して容器内がアルカリ雰囲
気となりベータアルミナ管成形体からのNa2Oの飛散が抑
制されるからである。Further, the lid 15 is also preferably made of the same material as the firing container 11, and the material thereof is preferably alumina, magnesia or spinel. This is because the inside of the container becomes an alkaline atmosphere during firing, and scattering of Na 2 O from the beta-alumina tube molded body is suppressed.
ベータアルミナ管成形体10の受け口13内への挿入方法
としては、通常行なわれている成形体10を保持しつつ上
方より降下させ挿入する方法の他、例えば成形体10の内
側に風船状のゴム体を入れそれを膨張させることにより
成形体10を保持し、上方より降下させ挿入する方法、な
ど従来公知の方法を適宜用いることができる。As a method of inserting the beta-alumina tube molded body 10 into the receiving port 13, a usual method of holding the molded body 10 and lowering it from above and inserting it, for example, a balloon-shaped rubber inside the molded body 10 is used. A conventionally known method such as a method in which a molded body 10 is held by inserting a body and expanding the body and then dropping and inserting the molded body 10 from above can be appropriately used.
本発明者が実施したところ、従来の置き焼き法によれ
ば、外径が15〜50mmφ、長さ100〜400mmの場合、肉厚と
しては1.2〜2.0mmのベータアルミナ管の焼成が精々で、
それより薄いベータアルミナ管の焼成はできないが、一
方、本発明の焼成方法によれば、外径が15〜50mmφ、長
さ100〜400mmの場合、肉厚が0.5〜1.2mm程度の薄肉状の
ベータアルミナ管を焼成することができた。When the present inventor carried out, according to the conventional stationary firing method, when the outer diameter is 15 to 50 mmφ and the length is 100 to 400 mm, the beta alumina tube with a wall thickness of 1.2 to 2.0 mm is calcined at all,
Although it is not possible to fire a thinner beta alumina tube, on the other hand, according to the firing method of the present invention, when the outer diameter is 15 to 50 mmφ and the length is 100 to 400 mm, the wall thickness is about 0.5 to 1.2 mm and is thin. The beta alumina tube could be fired.
［発明の効果］ 以上説明したように、本発明のナトリウム−硫黄電池
用ベータアルミナ管の焼成方法によれば、ベータアルミ
ナ管成形体の重量を面荷重として受けるため、ベータア
ルミナ管成形体の吊り切れは生じず、しかも寸法公差の
小さな薄肉状のベータアルミナ管の焼成を行なうことが
できる。[Effects of the Invention] As described above, according to the method for firing a beta-alumina tube for a sodium-sulfur battery of the present invention, the weight of the beta-alumina tube molded body is received as a surface load, so that the beta-alumina tube molded body is suspended. It is possible to fire a thin-walled beta-alumina tube with no breakage and a small dimensional tolerance.
また、本焼成方法によれば、治具が不用となるという
利点も有する。Further, according to the main firing method, there is an advantage that a jig is unnecessary.
第１図はベータアルミナ管成形体を焼成容器内に挿入し
た状態を示す断面説明図、第２図はナトリウム−硫黄電
池の断面構成図、第３図は従来の置き焼き法を示す断面
説明図、第４図（ａ）（ｂ）は従来の吊り焼き法を示す
断面説明図である。 10……ベータアルミナ管成形体、11……焼成容器、12…
…支持板、13……受け口、14……成形体のテーパー状外
側部、15……蓋。FIG. 1 is a sectional explanatory view showing a state in which a beta-alumina tube molded body is inserted into a firing container, FIG. 2 is a sectional structural view of a sodium-sulfur battery, and FIG. 3 is a sectional explanatory view showing a conventional prebaking method. 4 (a) and 4 (b) are cross-sectional explanatory views showing a conventional hanging baking method. 10 …… Beta-alumina tube molding, 11 …… Baking container, 12…
… Support plate, 13… Receiving port, 14… Tapered outer side of molded body, 15… Lid.
Claims (2)
とするナトリウム−硫黄電池用ベータアルミナ管の製造
方法。 開口端部外側がテーパー状に形成された有底円筒状ベ
ータアルミナ管成形体を成形する。 該ベータアルミナ管成形体をそのテーパー部形状に対
応した漏斗状の受け口を有する支持板に挿入して垂下す
るとともに、該ベータアルミナ管成形体をその外側から
密閉容器にて覆った後、焼成する。 得られた焼成体からそのテーパー部を切断し、ナトリ
ウム−硫黄電池に用いる固体電解質管として得る。1. A method for producing a beta-alumina tube for a sodium-sulfur battery, which has the following requirements. A bottomed cylindrical beta-alumina tube molded body having a tapered outer end is formed. The beta-alumina tube molded body is inserted into a support plate having a funnel-shaped receiving port corresponding to the tapered shape and hung down, and the beta-alumina tube molded body is covered with a closed container from the outside and then fired. . The taper portion is cut from the obtained fired body to obtain a solid electrolyte tube used in a sodium-sulfur battery.
る請求項１記載の製造方法。2. The manufacturing method according to claim 1, wherein the beta-alumina tube has a wall thickness of 0.5 to 1.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1225015A JP2552737B2 (en) | 1989-08-31 | 1989-08-31 | Method for firing beta-alumina tube for sodium-sulfur battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1225015A JP2552737B2 (en) | 1989-08-31 | 1989-08-31 | Method for firing beta-alumina tube for sodium-sulfur battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0388279A JPH0388279A (en) | 1991-04-12 |
| JP2552737B2 true JP2552737B2 (en) | 1996-11-13 |
Family
ID=16822736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1225015A Expired - Lifetime JP2552737B2 (en) | 1989-08-31 | 1989-08-31 | Method for firing beta-alumina tube for sodium-sulfur battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2552737B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2709015B2 (en) * | 1992-10-29 | 1998-02-04 | 日本碍子株式会社 | Joint structure between solid electrolyte tube and insulating ring in sodium-sulfur battery and sodium-sulfur battery |
| US7642465B2 (en) | 1994-06-20 | 2010-01-05 | Cooper Technologies Company | Visual latching indicator arrangement for an electrical bushing and terminator |
| US6984791B1 (en) | 1993-03-19 | 2006-01-10 | Cooper Technologies Company | Visual latching indicator arrangement for an electrical bushing and terminator |
| US7182647B2 (en) | 2004-11-24 | 2007-02-27 | Cooper Technologies Company | Visible break assembly including a window to view a power connection |
| US7963783B2 (en) | 2008-02-25 | 2011-06-21 | Cooper Technologies Company | Separable connector system with vents in bushing nose |
| US7708576B2 (en) | 2008-08-25 | 2010-05-04 | Cooper Industries, Ltd. | Electrical connector including a ring and a ground shield |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55406B2 (en) * | 1972-07-19 | 1980-01-08 | ||
| JPS5926933A (en) * | 1982-07-29 | 1984-02-13 | Sasaki Glass Kk | Molding of hollow glass product with leg and its device |
| JPS6226767A (en) * | 1985-07-29 | 1987-02-04 | Tokyo Electric Power Co Inc:The | Sodium-sulfur battery |
| JP2738748B2 (en) * | 1989-07-28 | 1998-04-08 | 東京電力株式会社 | Glass soldering method for solid electrolyte tubes |
-
1989
- 1989-08-31 JP JP1225015A patent/JP2552737B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0388279A (en) | 1991-04-12 |
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