JPH01221870A - Sodium-sulfur battery - Google Patents
Sodium-sulfur batteryInfo
- Publication number
- JPH01221870A JPH01221870A JP63046139A JP4613988A JPH01221870A JP H01221870 A JPH01221870 A JP H01221870A JP 63046139 A JP63046139 A JP 63046139A JP 4613988 A JP4613988 A JP 4613988A JP H01221870 A JPH01221870 A JP H01221870A
- Authority
- JP
- Japan
- Prior art keywords
- sodium
- insulating ring
- container
- sulfur battery
- cathode
- 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
- BNOODXBBXFZASF-UHFFFAOYSA-N [Na].[S] Chemical compound [Na].[S] BNOODXBBXFZASF-UHFFFAOYSA-N 0.000 title claims description 26
- 239000011734 sodium Substances 0.000 claims abstract description 27
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 20
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 20
- 239000007784 solid electrolyte Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 239000013543 active substance Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910001415 sodium ion Inorganic materials 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 abstract description 9
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 9
- 229910052717 sulfur Inorganic materials 0.000 description 9
- 239000011593 sulfur Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 6
- 229910001948 sodium oxide Inorganic materials 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910000873 Beta-alumina solid electrolyte Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- HYHCSLBZRBJJCH-UHFFFAOYSA-N sodium polysulfide Chemical compound [Na+].S HYHCSLBZRBJJCH-UHFFFAOYSA-N 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- OLPXIHXXKBDZES-UHFFFAOYSA-L 37488-76-9 Chemical compound [Na+].[Na+].[S-]S[S-] OLPXIHXXKBDZES-UHFFFAOYSA-L 0.000 description 1
- 241000283153 Cetacea Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000003860 storage Methods 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
- 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
-
- 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)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は電池寿命を長くすることができるナトリウム−
硫黄電池に関し、特に絶縁リングと陰極容器との熱圧接
合部の耐腐食性構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention provides sodium
The present invention relates to sulfur batteries, and in particular to a corrosion-resistant structure of a thermopressure joint between an insulating ring and a cathode container.
（従来の技術）
最近、電気自動車用、夜間電力貯蔵用の二次電池として
性能面及び経済面の両面において優れている高温型のナ
トリウム−硫黄電池の研究開発が進められている。(Prior Art) Recently, research and development has been progressing on high-temperature sodium-sulfur batteries that are excellent in both performance and economical aspects as secondary batteries for electric vehicles and nighttime power storage.
即ち、性能面では、ナトリウム−硫黄電池は鉛蓄電池に
比べて理論エネルギー密度が高く、充放電時における水
素や酸素の発生といった副反応もなく、活物質の利用率
も高く、経済面ではナトリウム及び硫黄が安価であると
いう利点を有している。In other words, in terms of performance, sodium-sulfur batteries have a higher theoretical energy density than lead-acid batteries, have no side reactions such as generation of hydrogen or oxygen during charging and discharging, have a high utilization rate of active materials, and are economically superior to sodium and sulfur batteries. Sulfur has the advantage of being cheap.
従来のナトリウム−硫黄電池は、第８図に示すように下
部に陽極端子１を備え、陽極作用物質である溶融硫黄を
含んだカーボンマット等の陽極用導電材Ｍを貯留する円
筒状の陽極容器２と、該陽極容器２の上端部に対し、α
アルミナ製の絶縁リング３を介して連結され、かつ溶融
金属ナトリウムＮａを貯留する陰極容器４と、前記絶縁
リング３の内周部に固着され、かつ陰極作用物質である
ナトリウムイオンを選択的に透過させる機能を有した下
方へ延びる円筒状の袋管を形成するβアルミナ製の固体
電解質管５とからなっている。又、陰極容器４の上部蓋
の中央部には、該陰極容器４を通して固体電解質管５底
部まで延びた細長い陰極管６が貫通支持され、該陰極管
６の上端部には、陰極端子７が固着されている。As shown in FIG. 8, a conventional sodium-sulfur battery has a cylindrical anode container that is equipped with an anode terminal 1 at the bottom and stores a conductive material M for the anode such as carbon mat containing molten sulfur as an anode active substance. 2 and the upper end of the anode container 2, α
A cathode container 4 that is connected via an insulating ring 3 made of alumina and stores molten metal sodium Na, and a cathode container 4 that is fixed to the inner circumference of the insulating ring 3 and selectively permeates sodium ions as a cathode active substance. It consists of a solid electrolyte tube 5 made of β-alumina and forming a cylindrical bag tube extending downward. In addition, an elongated cathode tube 6 extending through the cathode container 4 to the bottom of the solid electrolyte tube 5 is supported through the center of the upper lid of the cathode container 4, and a cathode terminal 7 is provided at the upper end of the cathode tube 6. It is fixed.
そして、放電時には次のような反応によってナトリウム
イオンが固体電解質管５を透過して陽極容器２内の硫黄
と反応し、多硫化ナトリウムを生成する。During discharging, sodium ions pass through the solid electrolyte tube 5 and react with sulfur in the anode container 2 to produce sodium polysulfide through the following reaction.
２Ｎａ＋ＸＳ−＋Ｎａ２ Ｓｘ
又、充電時には放電時とは逆の反応が起こり、ナトリウ
ム及び硫黄が生成される。2Na+XS-+Na2 Sx Also, during charging, a reaction opposite to that during discharging occurs, and sodium and sulfur are generated.
上記のようなナトリウム−硫黄電池の絶縁リング３と陰
極容器４及び陽極容器２とはアルミニウムよりなる中間
材８を介して熱圧接により気密的に連結固定されている
。The insulating ring 3, cathode container 4, and anode container 2 of the above-described sodium-sulfur battery are hermetically connected and fixed by thermo-pressure welding via an intermediate material 8 made of aluminum.
（発明が解決しようとする課題）
前述したように、従来のナトリウム−硫黄電池の絶縁リ
ング３と陰極容器４はアルミニウムよりなる中間材８を
介在させた状態で互いに熱圧接合されていたので、陰極
容器４内の溶融金属ナトリウムＮａが前記中間材８に常
時触れており、この結果、何等かの原因で、金属ナトリ
ウムが酸化された場合、中間材８が腐食し、熱圧接合部
が剥離して、電池が破損し、その寿命を低下することが
あった。(Problems to be Solved by the Invention) As mentioned above, the insulating ring 3 and cathode container 4 of the conventional sodium-sulfur battery were thermo-pressure bonded to each other with an intermediate material 8 made of aluminum interposed. Molten metallic sodium Na in the cathode container 4 is constantly in contact with the intermediate material 8, and as a result, if the metallic sodium is oxidized for some reason, the intermediate material 8 will corrode and the thermopressure joint will peel. This may damage the battery and shorten its lifespan.
請求項１記載の発明の目的は、上記従来の問題点を解消
して、酸化ナトリウムによる中間材の腐食を防止して、
電池の寿命を向上することができるナトリウム−硫黄電
池を提供することにある。The object of the invention according to claim 1 is to solve the above-mentioned conventional problems and prevent corrosion of intermediate materials due to sodium oxide.
An object of the present invention is to provide a sodium-sulfur battery that can improve battery life.
又、請求項２記載の発明の目的は、請求項１記載の発明
の目的に加え、部品点数を減少して絶縁リングと陰極容
器の熱圧接合部の気密信頼性を向上することができるナ
トリウム−硫黄電池を提供することにある。In addition to the object of the invention set forth in claim 1, the object of the invention set forth in claim 2 is to reduce the number of parts and improve the airtight reliability of the thermopressure joint between the insulating ring and the cathode container. - To provide a sulfur battery.
又、請求項３記載の発明の目的は、加工及び組みっけを
容易に行い、陰極容器内の空間を有効に利用することが
できるナトリウム−硫黄電池を提供することにある。Another object of the invention is to provide a sodium-sulfur battery that can be easily processed and assembled, and that can effectively utilize the space inside the cathode container.
（課題を解決するための手段）
請求項１記載の発明は、前記目的を達成するため、陽極
作用物質である溶融硫黄を含んだカーボンマント等の陽
極用導電材を貯留する有底筒状の陽極容器の上部に対し
、絶縁リング及びアルミニウムよりなる中間材を介して
、溶融金属ナトリウムを貯留する有蓋筒状の陰極容器を
熱圧接により固定し、前記陽極容器の内部には、上端を
前記絶縁リングの内周部に嵌合して前記陰極容器内部と
連通し、かつ陰極作用物質であるナトリウムイオンを選
択的に透過させる機能を有した有底筒状の固体電解質管
を収容したナトリウム−硫黄電池において、
前記中間材に対し溶融金属ナトリウムが触れるのを阻止
する遮蔽部材を設けるという構成を採用している。(Means for Solving the Problems) In order to achieve the above object, the invention according to claim 1 provides a bottomed cylindrical structure for storing an anode conductive material such as a carbon mantle containing molten sulfur as an anode active substance. A covered cylindrical cathode container for storing molten metal sodium is fixed to the upper part of the anode container via an insulating ring and an intermediate material made of aluminum by heat welding. Sodium-sulfur containing a bottomed cylindrical solid electrolyte tube that fits into the inner periphery of the ring, communicates with the inside of the cathode container, and has the function of selectively transmitting sodium ions, which are cathode active substances. In the battery, a structure is adopted in which a shielding member is provided to prevent molten metal sodium from coming into contact with the intermediate material.
請求項２記載の発明は、前記目的を達成するため、請求
項１記載の発明の構成において、固体電解質管又は絶縁
リングに対して、遮蔽部材としての遮蔽筒を一体に形成
するという手段をとっている。In order to achieve the above object, the invention according to claim 2 takes a step of forming a shielding cylinder as a shielding member integrally with the solid electrolyte tube or the insulating ring in the structure of the invention according to claim 1. ing.
さらに、請求項３記載の発明は、前記目的を達成するた
め、請求項１記載の発明の構成において、絶縁リングに
如して遮蔽部材としての絶縁リングを螺合するとともに
、絶縁リングと陰極容器との間に金属製のパツキンを介
在するという手段をとっている。Furthermore, in order to achieve the above-mentioned object, the invention according to claim 3 provides the structure of the invention according to claim 1, in which an insulating ring serving as a shielding member is screwed together through an insulating ring, and the insulating ring and the cathode container are screwed together. The method is to insert a metal gasket between the two.
（作用）
請求項１記載の発明は、上記構成を採用したことにより
、陰極容器内で金属ナトリウムが何等かの原因で酸化さ
れても、絶縁リングと陰極容器との熱圧接合部の中間材
が直接酸化ナトリウムに触れることはないので、中間材
の腐食は誘発゛されず、従って、電池の寿命を向上する
ことができる。(Function) The invention according to claim 1 employs the above configuration, so that even if metallic sodium is oxidized for some reason in the cathode container, the intermediate material of the thermopressure joint between the insulating ring and the cathode container can be removed. Since the battery does not come into direct contact with sodium oxide, corrosion of the intermediate material is not induced, and the life of the battery can therefore be improved.
又、請求項２記載の発明は、上記構成をとったことによ
り、請求項１記載の発明の作用に加え、部品点数が減少
するとともに、絶縁リングと陰極容器との熱圧接合部の
気密信鯨性が向上する。Further, the invention as claimed in claim 2 has the above configuration, so that in addition to the effect of the invention as claimed in claim 1, the number of parts is reduced and the airtightness of the thermopressure joint between the insulating ring and the cathode container is improved. Whale nature improves.
さらに、請求項３記載の発明は、上記構成をとったこと
により、請求項１記載の発明の作用に加え、陰極容器内
の空間を有効に利用することができる。Further, the invention according to claim 3 has the above configuration, so that in addition to the effect of the invention according to claim 1, the space within the cathode container can be used effectively.
（実施例）
次に、請求項２記載の発明を具体化した第一実施例を第
１図〜第４図を用いて説明する。(Example) Next, a first example embodying the invention according to claim 2 will be described using FIGS. 1 to 4.
この第一実施例のナトリウム−硫黄電池は、後述する特
徴的部分を除いて、前述した従来のナトリウム−硫黄電
池と構成が同じである。すなわち、この実施例のナトリ
ウム−硫黄電池も、第１図に示すように下部に陽極端子
１を備えた陽極用導電材Ｍを貯留する円筒状の陽極容器
２と、該陽極容器２の上端部に対し、絶縁リング３及び
アルミニウムよりなる中間材８を介して熱圧接合により
連結され、かつ溶融金属ナトリウムＮａを貯留する陰極
容器４と、前記絶縁リング３の内周部に固着されたβア
ルミナ製の固体電解質管５と、陰極端子７を備えた陰極
管６とにより構成されている。The sodium-sulfur battery of this first embodiment has the same structure as the conventional sodium-sulfur battery described above, except for the characteristic parts described below. That is, as shown in FIG. 1, the sodium-sulfur battery of this embodiment also includes a cylindrical anode container 2 for storing an anode conductive material M having an anode terminal 1 at the bottom thereof, and an upper end portion of the anode container 2. In contrast, a cathode container 4 which is connected by thermo-pressure bonding via an insulating ring 3 and an intermediate member 8 made of aluminum and stores molten metal sodium Na, and a β-alumina fixed to the inner circumference of the insulating ring 3. It is composed of a solid electrolyte tube 5 manufactured by A.M. Co., Ltd., and a cathode tube 6 equipped with a cathode terminal 7.
又、前記陰極容器４及び固体電解質管５内には、該固体
電解質管が破損した場合の安全対策として、ステンレス
製のウィック９（繊維）が充填されている。Further, the cathode container 4 and the solid electrolyte tube 5 are filled with a stainless steel wick 9 (fiber) as a safety measure in case the solid electrolyte tube is damaged.
従って、電池の放電時には溶融金属ナトリウムはナトリ
ウムイオンとなって固体電解質管５を透過し、陽極容器
２及び固体電解質管５で区画形成された陽極用導電材Ｍ
の収容空間に入り、そこで前述した反応式に基づいて硫
黄と反応し多硫化ナトリウム、特に最終的には三硫化ナ
トリウムを生成する。Therefore, when the battery is discharged, molten metal sodium becomes sodium ions and passes through the solid electrolyte tube 5.
There, it reacts with sulfur based on the reaction formula described above to produce sodium polysulfide, particularly sodium trisulfide.
さて、第一実施例のナトリウム−硫黄電池の特徴的部分
は、第１図及び第３図に示すように前記固体電解質管５
の上端部に対し、前記陰極容器４の内周面に沿うように
、かつ該陰極容器内のナトリウムが前記中間材８に触れ
るのを防止するように、該固体電解質管５と同材質の遮
蔽部材としての遮蔽筒１０を一体的に形成したことにあ
る。又、陰極容器４の下端に一体形成したフランジ部４
ａは絶縁リング３との熱圧接合上外側に形成されている
。Now, the characteristic part of the sodium-sulfur battery of the first embodiment is the solid electrolyte tube 5 as shown in FIGS. 1 and 3.
A shield made of the same material as the solid electrolyte tube 5 is attached to the upper end along the inner peripheral surface of the cathode container 4 and to prevent sodium in the cathode container from touching the intermediate material 8. The reason is that the shielding tube 10 as a member is integrally formed. Also, a flange portion 4 integrally formed at the lower end of the cathode container 4
a is formed on the outer side above the thermopressure bonding with the insulating ring 3.
従って、第一実施例の発明は、陰極容器４内の金属ナト
リウムＮａが何等かの原因で酸化されても、酸化ナトリ
ウムが中間材８に触れるのを確実に防止して、該中間材
８の腐食を防止することができ、絶縁リング３と陰極容
器４との熱圧接合部の剥離をなくして、電池の寿命を向
上することができる。又、部品点数を増加する必要がな
いという利点もある。Therefore, even if the metallic sodium Na in the cathode container 4 is oxidized for some reason, the invention of the first embodiment reliably prevents the sodium oxide from coming into contact with the intermediate material 8, and the intermediate material 8 is Corrosion can be prevented, separation of the thermopressure joint between the insulating ring 3 and the cathode container 4 can be eliminated, and the life of the battery can be improved. Another advantage is that there is no need to increase the number of parts.
第一実施例のナトリウム−硫黄電池は、第４図に示すよ
うに、充放電回数が増加していっても、電池容量がほぼ
同一となり、従来例と比較して、長寿命であることが実
験により判明した。As shown in Figure 4, the sodium-sulfur battery of the first embodiment has almost the same battery capacity even when the number of charging and discharging increases, and has a longer life than the conventional example. It was discovered through experiments.
次に、第５図により請求項２記載の発明を具体化した第
二実施例を説明する。Next, a second embodiment embodying the invention as claimed in claim 2 will be described with reference to FIG.
この第二実施例では前記絶縁リング３の上面に対し、該
絶縁リング３と同材質の遮蔽部材としての遮蔽筒１１を
一体的に形成しているが、その他の構成は前記第一実施
例と同一である。In this second embodiment, a shielding cylinder 11 as a shielding member made of the same material as the insulating ring 3 is integrally formed on the upper surface of the insulating ring 3, but the other configuration is the same as that of the first embodiment. are the same.
従って、この第二実施例は固体電解質管５に一体形成す
るのと比較して、全長が短くなるので、製造あるいは取
扱等が容易になるという利点があるが、その他の作用及
び効果は第一実施例と同様である。Therefore, compared to forming the solid electrolyte tube integrally with the solid electrolyte tube 5, this second embodiment has the advantage of being easier to manufacture and handle because the overall length is shorter, but the other functions and effects are primary. This is similar to the example.
次に、第”６図により請求項３記載の発明を具体化した
第三実施例を説明する。Next, a third embodiment embodying the invention set forth in claim 3 will be described with reference to FIG.
この第三実施例では絶縁リング３と陰極容器４とを熱圧
接合した後、前記リング３の内周面に形成したネジ部３
ａに同じくαアルミナ製の遮蔽部材としての遮蔽リング
１２のネジ部１２ａを螺合固定し、該遮蔽リング１２に
より前記陰極容器４の下端に一体形成したフランジ部４
ａを絶縁リング３側へ締付固定している。又、前記遮蔽
リング１２とフランジ部４ａとの間には、酸化ナトリウ
ムに対する耐腐食性に優れた例えばニッケル、ステンレ
ス等の金属をパツキン１３として介在させている。なお
、この第三実施例においては、前記遮蔽リング１２を絶
縁リング３の熱膨張係数と同じ係数で、酸化ナトリウム
に対する耐腐食性が高い金属により形成してもよい。In this third embodiment, after the insulating ring 3 and the cathode container 4 are bonded by heat and pressure, a threaded portion 3 is formed on the inner peripheral surface of the ring 3.
A threaded portion 12a of a shielding ring 12 as a shielding member made of α-alumina is screwed and fixed to the flange portion 4 integrally formed at the lower end of the cathode container 4 by the shielding ring 12.
a is tightened and fixed to the insulating ring 3 side. Further, a metal such as nickel or stainless steel having excellent corrosion resistance against sodium oxide is interposed as a packing 13 between the shielding ring 12 and the flange portion 4a. In this third embodiment, the shielding ring 12 may be formed of a metal having the same thermal expansion coefficient as the insulating ring 3 and having high corrosion resistance against sodium oxide.
この第三実施例の発明は、前記二つの実施例と比較して
、陰極容器４内の空間を有効に利用することができると
いう利点があるが、その他の作用及び効果は前記実施例
と同様である。The invention of the third embodiment has the advantage that the space inside the cathode container 4 can be used effectively compared to the above two embodiments, but other functions and effects are the same as those of the above embodiments. It is.
なお、本発明は第７図に示すように絶縁リング３の外側
部に対し上向きの円筒部３ｂを一体に形成してその上端
部に中間材８を介して金属製の蓋板１４を接合固定する
ことにより、酸化ナトリウムが上方の中間材８に触れな
いようにして、該中間材８の腐食を防止するようにして
もよい。Note that, as shown in FIG. 7, the present invention includes integrally forming an upward cylindrical portion 3b on the outer side of the insulating ring 3, and joining and fixing a metal cover plate 14 to the upper end thereof via an intermediate member 8. By doing so, sodium oxide may be prevented from coming into contact with the upper intermediate material 8, thereby preventing corrosion of the intermediate material 8.
（発明の効果）
請求項１のナトリウム−硫黄電池は、絶縁リングと陰極
容器との熱圧接合部の腐食を抑制して、電池寿命の向上
を計ることができる効果がある。(Effects of the Invention) The sodium-sulfur battery according to claim 1 has the effect of suppressing corrosion of the thermopressure joint between the insulating ring and the cathode container, thereby improving the battery life.
又、請求項２のナトリウム−硫黄電池は請求項１のナト
リウム−硫黄電池の効果に加えて部品点数を増加しない
で、製造及び組みっけを容易に行うことができる効果が
ある。In addition to the advantages of the sodium-sulfur battery of claim 1, the sodium-sulfur battery of claim 2 has the advantage that it can be manufactured and assembled easily without increasing the number of parts.
さらに、請求項３のナトリウム−硫黄電池は請求項１の
ナトリウム−硫黄電池の効果に加えて陰極容器内の空間
を有効に利用することができる効果がある。Further, the sodium-sulfur battery according to the third aspect has the advantage that the space inside the cathode container can be used effectively in addition to the effect of the sodium-sulfur battery according to the first aspect.
第１図〜第４図は請求項２のナトリウム−硫黄電池の第
一実施例を示し、第１図はナトリウム−硫黄電池の中央
部縦断面図、第２図は第１図のＡ−Ａ線拡大断面図、第
３図は要部の拡大断面図、第４図は電池の充放電回数と
容量との関係を示すグラフ、第５図は同じく請求項２の
ナトリウム−硫黄電池の第二実施例を示す中央部縦断面
図、第６図は請求項３のナトリウム−硫黄電池を具体化
した第三実施例を示す要部の拡大断面図、第７図は本発
明の別の実施例を示す部分断面図、第８図は従来例を示
す中央部縦断面図である。
■・・・陽極端子、２・・・陽極容器、３・・・絶縁リ
ング、３ａ・・・ネジ部、３ｂ・・・円筒部、４・・・
陰極容器、４ａ・・・フランジ部、５・・・固体電解質
管、６・・・陰極管、７・・・陰極端子、８・・・中間
材、９・・・ウィック、１０．１１・・・遮蔽部材とし
ての遮蔽筒、１２・・・遮蔽部材としての遮蔽リング、
１３・・・パツキン、Ｎａ・・・溶融金属ナトリウム、
Ｍ・・・陽極用導電材。1 to 4 show a first embodiment of the sodium-sulfur battery according to claim 2, FIG. 1 is a longitudinal cross-sectional view of the central part of the sodium-sulfur battery, and FIG. 2 is a line A-A in FIG. 1. 3 is an enlarged sectional view of the main part, FIG. 4 is a graph showing the relationship between the number of charging and discharging times of the battery and the capacity, and FIG. 5 is a second view of the sodium-sulfur battery according to claim 2. FIG. 6 is an enlarged sectional view of a main part showing a third embodiment of the sodium-sulfur battery according to claim 3, and FIG. 7 is another embodiment of the present invention. FIG. 8 is a longitudinal sectional view of the central part of a conventional example. ■...Anode terminal, 2...Anode container, 3...Insulating ring, 3a...Threaded part, 3b...Cylindrical part, 4...
Cathode container, 4a...Flange portion, 5...Solid electrolyte tube, 6...Cathode tube, 7...Cathode terminal, 8...Intermediate material, 9...Wick, 10.11... - A shielding tube as a shielding member, 12...a shielding ring as a shielding member,
13... Patsukin, Na... Molten metal sodium,
M: Conductive material for anode.
Claims (1)
ト等の陽極用導電材（Ｍ）を貯留する有底筒状の陽極容
器（２）の上部に対し、絶縁リング（３）及びアルミニ
ウムよりなる中間材（８）を介して、溶融金属ナトリウ
ム（Ｎａ）を貯留する有蓋筒状の陰極容器（４）を熱圧
接により固定し、前記陽極容器（２）の内部には、上端
を前記絶縁リング（３）の内周部に嵌合して前記陰極容
器（４）内部と連通し、かつ陰極作用物質であるナトリ
ウムイオンを選択的に透過させる機能を有した有底筒状
の固体電解質管（５）を収容したナトリウム−硫黄電池
において、 前記中間材に対し溶融金属ナトリウム（Ｎａ）が触れる
のを阻止する遮蔽部材を設けたことを特徴とするナトリ
ウム−硫黄電池。 ２、前記遮蔽部材は前記固体電解質管（５）又は前記絶
縁リング（３）と一体に形成された遮蔽筒（１０、１１
）である請求項１記載のナトリウム−硫黄電池。 ３、前記遮蔽部材は前記絶縁リング（３）に螺合固定さ
れ、かつ前記陰極容器（４）の下端フランジ部をパッキ
ン（１３）を介して締付固定する遮蔽リング（１２）で
ある請求項１記載のナトリウム−硫黄電池。[Claims] 1. An insulating ring ( 3) and an intermediate material (8) made of aluminum, a covered cylindrical cathode container (4) for storing molten metal sodium (Na) is fixed by thermo-pressure welding, and the inside of the anode container (2) is , a bottomed cylinder whose upper end fits into the inner peripheral part of the insulating ring (3) and communicates with the inside of the cathode container (4), and which has a function of selectively transmitting sodium ions, which are a cathode active substance. 1. A sodium-sulfur battery containing a solid electrolyte tube (5) having a shape, characterized in that a shielding member is provided to prevent molten metal sodium (Na) from coming into contact with the intermediate material. 2. The shielding member is a shielding tube (10, 11) integrally formed with the solid electrolyte tube (5) or the insulating ring (3).
) The sodium-sulfur battery according to claim 1. 3. The shielding member is a shielding ring (12) that is screwed and fixed to the insulating ring (3) and tightens and fixes the lower end flange portion of the cathode container (4) via a packing (13). 1. The sodium-sulfur battery according to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63046139A JPH01221870A (en) | 1988-02-29 | 1988-02-29 | Sodium-sulfur battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63046139A JPH01221870A (en) | 1988-02-29 | 1988-02-29 | Sodium-sulfur battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01221870A true JPH01221870A (en) | 1989-09-05 |
Family
ID=12738642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63046139A Pending JPH01221870A (en) | 1988-02-29 | 1988-02-29 | Sodium-sulfur battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01221870A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03241674A (en) * | 1990-02-20 | 1991-10-28 | Ngk Insulators Ltd | Manufacture of sodium-sulfur battery |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5750775A (en) * | 1980-09-12 | 1982-03-25 | Gen Electric | Sodium-sulfur battery and method of using same |
-
1988
- 1988-02-29 JP JP63046139A patent/JPH01221870A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5750775A (en) * | 1980-09-12 | 1982-03-25 | Gen Electric | Sodium-sulfur battery and method of using same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03241674A (en) * | 1990-02-20 | 1991-10-28 | Ngk Insulators Ltd | Manufacture of sodium-sulfur battery |
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