JPH06215758A - Terminal structure for sodium-sulfur battery - Google Patents

Terminal structure for sodium-sulfur battery

Info

Publication number
JPH06215758A
JPH06215758A JP5007938A JP793893A JPH06215758A JP H06215758 A JPH06215758 A JP H06215758A JP 5007938 A JP5007938 A JP 5007938A JP 793893 A JP793893 A JP 793893A JP H06215758 A JPH06215758 A JP H06215758A
Authority
JP
Japan
Prior art keywords
plate
terminal
aluminum
contact
collector plate
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
Application number
JP5007938A
Other languages
Japanese (ja)
Inventor
Keiichi Mori
啓一 森
Koichi Miyashita
晃一 宮下
Hiroshi Uragami
洋 浦上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NGK Insulators Ltd
Original Assignee
NGK Insulators Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NGK Insulators Ltd filed Critical NGK Insulators Ltd
Priority to JP5007938A priority Critical patent/JPH06215758A/en
Publication of JPH06215758A publication Critical patent/JPH06215758A/en
Pending legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Landscapes

  • Secondary Cells (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

PURPOSE:To joint and fix a contact part an a terminal board with small contact electric resistance, even an aluminum oxide film is formed on the contact part of a collector plate. CONSTITUTION:A collector plate 9, composed of aluminum or aluminum alloy, is arranged along the inner surface of a heat-insulating vessel 1, and a contact part 13 is provided on a part of the collecting plate 9. A terminal board 14, composed of material having heat conductivity lower than that of the collector plate 9, jointed and fixed to the contact part 13. A terminal 17 is protrudedly provided on the terminal board 14 so as to penetrate the heat-insulating vessel 1 to be extended outward. A film 18, composed of aluminum or aluminum alloy, is provided on the joint surface of the film 18, which is formed in a roughened surface.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は、ナトリウム−硫黄電
池の端子構造に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal structure for a sodium-sulfur battery.

【0002】[0002]

【従来の技術】一般に、ナトリウム−硫黄電池では単電
池を多数接続して集合電池とし、その端部に接続端子が
設けられている。そして、この接続端子を介して電力を
取り出すようにしている。このナトリウム−硫黄電池は
高温電池であり、接続端子からの放熱を低減させて熱効
率を向上させるため、接続端子としては熱伝導度の低い
鉄を使用している。
2. Description of the Related Art Generally, in a sodium-sulfur battery, a large number of unit cells are connected to form an assembled battery, and a connection terminal is provided at an end thereof. Then, the electric power is taken out through this connection terminal. This sodium-sulfur battery is a high temperature battery and uses iron with low thermal conductivity as the connection terminal in order to reduce heat radiation from the connection terminal and improve thermal efficiency.

【0003】このような従来のナトリウム−硫黄電池に
おいては、断熱容器の内面にアルミニウムまたはアルミ
ニウム合金よりなる集電板が配置され、その集電板の一
部に接触部が設けられている。また、この接触部には集
電板よりも熱伝導率の低い材料の鉄等よりなる端子板が
接合固定され、その端子板上に突設された端子が断熱容
器を貫通して外方に延長されている。これにより、断熱
容器内の熱が集電板から端子板や端子を通して外部へ放
散されるのを防ぐようになっている。
In such a conventional sodium-sulfur battery, a current collector plate made of aluminum or an aluminum alloy is arranged on the inner surface of a heat insulating container, and a contact portion is provided on a part of the current collector plate. Also, a terminal plate made of iron, which is a material having a lower thermal conductivity than the current collector plate, is joined and fixed to this contact portion, and the terminal protruding on the terminal plate penetrates the heat insulation container to the outside. It has been extended. This prevents heat in the heat insulating container from being dissipated from the current collector plate to the outside through the terminal plate or the terminal.

【0004】[0004]

【発明が解決しようとする課題】ところが、この従来の
端子構造においては、アルミニウムまたはアルミニウム
合金よりなる集電板の接触部に、鉄等よりなる端子板が
直接に接合固定されるようになっている。そのため高温
により、経時的に接触部の表面に酸化アルミニウム膜が
形成されやすく、その酸化アルミニウム膜のために集電
板の接触部と端子板との接合部間の接触電気抵抗が大き
くなり、電池効率が悪くなるという問題があった。
However, in this conventional terminal structure, the terminal plate made of iron or the like is directly joined and fixed to the contact portion of the current collector plate made of aluminum or aluminum alloy. There is. Therefore, due to the high temperature, an aluminum oxide film is likely to be formed on the surface of the contact portion over time, and the aluminum oxide film increases the contact electric resistance between the contact portion of the current collector and the joint between the terminal plate and the battery. There was a problem of inefficiency.

【0005】この発明は、このような従来の技術に存在
する問題点に着目してなされたものであって、その目的
とするところは、集電板の接触部上に酸化アルミニウム
膜が形成されていても、その酸化アルミニウム膜を破っ
て、集電板の接触部と端子板とを接合させることができ
て、その接合部間の接触電気抵抗が大きくなるのを防止
することができ、電池効率の良いナトリウム−硫黄電池
の端子構造を提供することにある。
The present invention has been made by paying attention to the problems existing in such a conventional technique, and the purpose thereof is to form an aluminum oxide film on the contact portion of the current collector plate. Even if the aluminum oxide film is broken, the contact portion of the current collector plate and the terminal plate can be joined, and the contact electric resistance between the joined portions can be prevented from increasing. It is to provide an efficient sodium-sulfur battery terminal structure.

【0006】[0006]

【課題を解決するための手段】上記の目的を達成するた
めに、この発明のナトリウム−硫黄電池の端子構造にお
いては、断熱容器の内面に沿って配置され、アルミニウ
ムまたはアルミニウム合金よりなる集電板と、その集電
板の一部に設けられた接触部と、その接触部に接合固定
され、集電板よりも熱伝導率の低い材料よりなる端子板
と、その端子板上に突設され、断熱容器を貫通して外方
に延びる端子とを備え、前記接触部に対する端子板の接
合面には、アルミニウムまたはアルミニウム合金よりな
る皮膜を設け、その皮膜の表面を粗面状に形成したもの
である。
In order to achieve the above object, in the terminal structure of a sodium-sulfur battery of the present invention, a current collector plate which is arranged along the inner surface of a heat insulating container and is made of aluminum or an aluminum alloy. And a contact part provided on a part of the current collector plate, a terminal plate made of a material having a lower thermal conductivity than the current collector plate, which is joined and fixed to the contact part, and projectingly provided on the terminal plate. A terminal which extends outward through the heat-insulating container, and a coating made of aluminum or an aluminum alloy is provided on the joint surface of the terminal plate to the contact portion, and the surface of the coating is formed into a rough surface. Is.

【0007】[0007]

【作用】上記のように構成されたナトリウム−硫黄電池
の端子構造によれば、集電板上の接触部の表面に酸化ア
ルミニウム膜が形成されていても、その接触部に端子板
を接合固定する際に、端子板上に設けられたアルミニウ
ムまたはアルミニウム合金よりなる皮膜の粗面が、酸化
アルミニウム膜を破って接触部に接合する。従って、接
触部と端子板との接合部間において接触電気抵抗が大き
くなるのを確実に防止することができ、電池効率が向上
する。
According to the terminal structure of the sodium-sulfur battery constructed as described above, even if the aluminum oxide film is formed on the surface of the contact portion on the current collector plate, the terminal plate is joined and fixed to the contact portion. In doing so, the rough surface of the film made of aluminum or aluminum alloy provided on the terminal plate breaks the aluminum oxide film and bonds to the contact portion. Therefore, it is possible to reliably prevent the contact electric resistance from increasing between the joint portion between the contact portion and the terminal plate, and improve the battery efficiency.

【0008】[0008]

【実施例】以下、この発明を具体化したナトリウム−硫
黄電池の端子構造の一実施例を、図面に基づいて詳細に
説明する。
An embodiment of the terminal structure of a sodium-sulfur battery embodying the present invention will be described in detail below with reference to the drawings.

【0009】図1〜図3に示すように、断熱容器1は四
角箱型に形成され、外壁2と内壁3との間に断熱材4を
介装して構成されている。蓋体5は断熱容器1の上面開
口部を閉鎖するように取り付けられ、断熱容器1と同様
に、内外二重の壁間に断熱材を介装して構成されてい
る。
As shown in FIGS. 1 to 3, the heat insulating container 1 is formed in a rectangular box shape, and a heat insulating material 4 is interposed between an outer wall 2 and an inner wall 3. The lid 5 is attached so as to close the upper opening of the heat insulating container 1, and, like the heat insulating container 1, is configured by interposing a heat insulating material between the inner and outer double walls.

【0010】電気ヒータ6は前記断熱容器1の内底部に
収容配置され、この電気ヒータ6により断熱容器1の内
部が所定温度に加熱される。複数の単電池7は断熱容器
1内に立設配置され、それらの上端には一対の電池端子
8が突設されている。そして、各単電池7はナトリウム
−硫黄電池から構成され、その内部には金属ナトリウム
と硫黄とが固体電解質管により区分して収容されてい
る。
The electric heater 6 is housed in the inner bottom of the heat insulating container 1, and the electric heater 6 heats the inside of the heat insulating container 1 to a predetermined temperature. The plurality of unit cells 7 are arranged upright in the heat insulating container 1, and a pair of battery terminals 8 are projectingly provided at their upper ends. Each of the unit cells 7 is composed of a sodium-sulfur battery, and metallic sodium and sulfur are separately stored in the inside by a solid electrolyte tube.

【0011】側面ほぼ逆三角形状の集電板9は前記断熱
容器1の両側内面に沿って配設され、その内面全体及び
外面周縁にはマイカ等よりなる絶縁板10,11が接合
固定されている。そして、この集電板9にはブスバー等
を介して、各単電池7の電池端子8が電気接続されてい
る。
Current collecting plates 9 each having a substantially inverted triangular side surface are arranged along the inner surfaces on both sides of the heat insulating container 1, and insulating plates 10 and 11 made of mica or the like are joined and fixed to the entire inner surface and the outer surface periphery. There is. The battery terminal 8 of each unit cell 7 is electrically connected to the collector plate 9 via a bus bar or the like.

【0012】切欠部12は前記内側絶縁板10の下端に
設けられ、この切欠部12を通して集電板9の内面には
接触部としての接触板13が溶接固定されている。そし
て、前記集電板9及び接触板13は、電気抵抗が小さく
て耐食性に優れたアルミニウムまたはアルミニウム合金
より形成されている。
The cutout 12 is provided at the lower end of the inner insulating plate 10, and a contact plate 13 as a contact portion is welded and fixed to the inner surface of the current collector plate 9 through the cutout 12. The collector plate 9 and the contact plate 13 are made of aluminum or aluminum alloy having a low electric resistance and excellent corrosion resistance.

【0013】端子板14は前記接触板13の内面に接合
され、複数のボルト15及びナット16により固定され
ている。丸棒状の端子17は端子板14の外面に突設さ
れ、接触板13、集電板9及び断熱容器1を貫通して外
部に延長されている。そして、前記端子板14及び端子
17は、集電板9や接触板13よりも熱伝導率の低い材
料である鉄により形成され、それらの外面にはニッケル
メッキ等の防錆処理が施されている。
The terminal plate 14 is joined to the inner surface of the contact plate 13 and fixed by a plurality of bolts 15 and nuts 16. The round bar-shaped terminal 17 is provided on the outer surface of the terminal plate 14 so as to extend therethrough, passing through the contact plate 13, the current collector plate 9 and the heat insulating container 1. The terminal plate 14 and the terminal 17 are formed of iron, which is a material having a lower thermal conductivity than the current collector plate 9 and the contact plate 13, and their outer surfaces are subjected to rust prevention treatment such as nickel plating. There is.

【0014】皮膜18はアルミニウムまたはアルミニウ
ム合金を溶射することにより、前記接触板13に対向す
る端子板14の接合面に形成されている。そして、この
皮膜18の表面が溶射時に粗面状となるように形成さ
れ、接触板13に端子板14を接合固定する際に、接触
板13の表面に形成されている酸化アルミニウム膜を、
この皮膜18の粗面により破るようになっている。
The coating 18 is formed on the joint surface of the terminal plate 14 facing the contact plate 13 by spraying aluminum or aluminum alloy. The surface of the coating film 18 is formed to have a rough surface during thermal spraying, and when the terminal plate 14 is bonded and fixed to the contact plate 13, the aluminum oxide film formed on the surface of the contact plate 13 is
The rough surface of the film 18 causes the film to break.

【0015】さて、この実施例においては、接触板13
に対する端子板14の接合面にアルミニウムまたはアル
ミニウム合金よりなる皮膜18が設けられ、その皮膜1
8の表面が粗面状に形成されている。このため、接触板
13に端子板14を接合固定する際に、接触板13の表
面に酸化アルミニウム膜が形成されていても、皮膜18
の粗面が酸化アルミニウム膜を破って接触板13に接合
する。
Now, in this embodiment, the contact plate 13
A film 18 made of aluminum or an aluminum alloy is provided on the joint surface of the terminal plate 14 with respect to the film 1.
The surface of No. 8 is formed into a rough surface. Therefore, when the terminal plate 14 is bonded and fixed to the contact plate 13, even if the aluminum oxide film is formed on the surface of the contact plate 13, the film 18 is formed.
The rough surface of the aluminum plate breaks the aluminum oxide film and bonds to the contact plate 13.

【0016】そして、この状態で複数のボルト15及び
ナット16を締め付けて、端子板14を接触板13に低
温加圧すれば、アルミニウムまたはアルミニウム合金よ
りなる皮膜18と接触板13とがその後の加熱により互
いに固溶して密着接合される。従って、酸化アルミニウ
ム膜の存在により、接触板13と端子板14との接合部
間において、接触電気抵抗が大きくなるのを確実に防止
することができ、電池効率を良好に維持できる。
Then, in this state, a plurality of bolts 15 and nuts 16 are tightened to press the terminal plate 14 against the contact plate 13 at a low temperature, so that the film 18 made of aluminum or aluminum alloy and the contact plate 13 are heated thereafter. Are solid-solved with each other to be closely joined. Therefore, due to the presence of the aluminum oxide film, it is possible to reliably prevent the contact electric resistance from increasing between the joint portions of the contact plate 13 and the terminal plate 14, and it is possible to maintain good battery efficiency.

【0017】なお、この発明は前記実施例の構成に限定
されるものではなく、この発明の趣旨から逸脱しない範
囲で、次のように変更して具体化することも可能であ
る。 (1)接触部13を集電板9の一部に一体に形成するこ
と。 (2)端子17を端子板14上に一体に形成すること。 (3)端子板14及び端子17を、ステンレス鋼やニッ
ケル等の他の材料で形成すること。 (4)皮膜18をアルミニウムまたはアルミニウム合金
のメッキにより端子板14の接合面に形成し、その皮膜
18の表面をワイヤブラシ等により粗面状にすること。
The present invention is not limited to the configuration of the above-described embodiment, and may be modified and embodied as follows without departing from the spirit of the present invention. (1) The contact portion 13 is formed integrally with a part of the current collector plate 9. (2) The terminal 17 is integrally formed on the terminal board 14. (3) The terminal plate 14 and the terminals 17 are made of another material such as stainless steel or nickel. (4) The coating 18 is formed on the joint surface of the terminal board 14 by plating aluminum or aluminum alloy, and the surface of the coating 18 is roughened by a wire brush or the like.

【0018】[0018]

【発明の効果】この発明は、以上説明したように構成さ
れているため、集電板の接触部上に酸化アルミニウム膜
が形成されていても、その酸化アルミニウム膜を破っ
て、集電板の接触部と端子板とを接合させることができ
て、その接合部間の接触電気抵抗が大きくなるのを確実
に防止することができ、電池効率が良いという優れた効
果を奏する。
Since the present invention is configured as described above, even if an aluminum oxide film is formed on the contact portion of the current collector plate, the aluminum oxide film is broken and the current collector plate is damaged. The contact portion and the terminal plate can be joined to each other, the contact electric resistance between the joined portions can be reliably prevented from increasing, and the excellent battery efficiency is achieved.

【図面の簡単な説明】[Brief description of drawings]

【図1】この発明を具体化したナトリウム−硫黄電池の
端子構造の一実施例を示す部分断面図である。
FIG. 1 is a partial sectional view showing an embodiment of a terminal structure of a sodium-sulfur battery embodying the present invention.

【図2】ナトリウム−硫黄電池の全体構成を示す部分破
断正面図である。
FIG. 2 is a partially cutaway front view showing the overall configuration of a sodium-sulfur battery.

【図3】図1のA−A線における部分断面図である。FIG. 3 is a partial cross-sectional view taken along the line AA of FIG.

【符号の説明】[Explanation of symbols]

1…断熱容器、9…集電板、13…接触部としての接触
板、14…端子板、17…端子、18…皮膜。
DESCRIPTION OF SYMBOLS 1 ... Adiabatic container, 9 ... Current collector plate, 13 ... Contact plate as a contact part, 14 ... Terminal plate, 17 ... Terminal, 18 ... Coating.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 断熱容器の内面に沿って配置され、アル
ミニウムまたはアルミニウム合金よりなる集電板と、そ
の集電板の一部に設けられた接触部と、その接触部に接
合固定され、集電板よりも熱伝導率の低い材料よりなる
端子板と、その端子板上に突設され、断熱容器を貫通し
て外方に延びる端子とを備え、 前記接触部に対する端子板の接合面には、アルミニウム
またはアルミニウム合金よりなる皮膜を設け、その皮膜
の表面を粗面状に形成したことを特徴とするナトリウム
−硫黄電池の端子構造。
1. A current collector plate, which is arranged along the inner surface of a heat insulating container and is made of aluminum or an aluminum alloy, a contact portion provided on a part of the current collector plate, and is joined and fixed to the contact portion. A terminal plate made of a material having a lower thermal conductivity than the electric plate, and a terminal projectingly provided on the terminal plate and extending outward through the heat insulating container, the joint surface of the terminal plate to the contact portion. Is a terminal structure of a sodium-sulfur battery, which is characterized in that a film made of aluminum or an aluminum alloy is provided and the surface of the film is formed into a rough surface.
JP5007938A 1993-01-20 1993-01-20 Terminal structure for sodium-sulfur battery Pending JPH06215758A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5007938A JPH06215758A (en) 1993-01-20 1993-01-20 Terminal structure for sodium-sulfur battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5007938A JPH06215758A (en) 1993-01-20 1993-01-20 Terminal structure for sodium-sulfur battery

Publications (1)

Publication Number Publication Date
JPH06215758A true JPH06215758A (en) 1994-08-05

Family

ID=11679460

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5007938A Pending JPH06215758A (en) 1993-01-20 1993-01-20 Terminal structure for sodium-sulfur battery

Country Status (1)

Country Link
JP (1) JPH06215758A (en)

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