JP2000138056A - Nonaqueous electrolyte battery - Google Patents
Nonaqueous electrolyte batteryInfo
- Publication number
- JP2000138056A JP2000138056A JP10311709A JP31170998A JP2000138056A JP 2000138056 A JP2000138056 A JP 2000138056A JP 10311709 A JP10311709 A JP 10311709A JP 31170998 A JP31170998 A JP 31170998A JP 2000138056 A JP2000138056 A JP 2000138056A
- Authority
- JP
- Japan
- Prior art keywords
- positive electrode
- electrode terminal
- aluminum
- metal layer
- terminal
- 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
Classifications
-
- 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
- Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、アルミニウム又は
アルミニウム合金等を用いた正極端子や銅又は銅合金等
を用いた負極端子を備えた非水電解質電池に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-aqueous electrolyte battery provided with a positive electrode terminal using aluminum or an aluminum alloy or the like and a negative electrode terminal using copper or a copper alloy or the like.
【０００２】[0002]
【従来の技術】電気自動車等に用いる大型大容量の長円
筒形の非水電解質二次電池は、図２に示すように、長円
筒形の電池ケース５内に図示しない発電要素を収納して
密閉している。電池ケース５は、長円筒形容器状のケー
ス本体部５ａの上端開口部に、長円形板状の蓋部５ｂを
嵌め込んでＴＩＧ溶接やレーザ溶接等により固着したも
のである。この蓋部５ｂには、２箇所の開口孔が形成さ
れ、内部に収納される発電要素の正負極に接続された正
極端子１と負極端子２の円筒形の本体の上端部をそれぞ
れ下方から突出させている。この際、これらの正極端子
１と負極端子２は、予めそれぞれ円筒形の本体の上端部
にセラミックスリング７とアルミニウムリング１０を金
属ロウ材等による封止材により順に外嵌固定しセラミッ
クス・ハーメチック・シールを形成している。そして、
蓋部５ｂの開口孔にそれぞれアルミニウムリング１０を
嵌合させてＴＩＧ溶接やレーザ溶接等で封止固着する。
従って、例えば正極端子１は、図３に示すように、発電
要素の正極に接続された正極集電体４に下端部をかしめ
て接続固定されると共に、円筒形の本体の上端部を蓋部
５ｂの開口孔から上方に突出させてセラミックスリング
７により絶縁封口される。また、負極端子２も同様にし
て負極集電体に接続固定されると共に、蓋部５ｂの開口
孔にセラミックスリング７を介して絶縁封口される。2. Description of the Related Art As shown in FIG. 2, a large-capacity, large-capacity, long-cylindrical nonaqueous electrolyte secondary battery used for an electric vehicle or the like has a long-cylindrical battery case 5 containing a power generation element (not shown). Sealed. The battery case 5 is formed by fitting an oblong plate-shaped lid 5b into an upper end opening of a case body 5a in the shape of a long cylindrical container, and fixed by TIG welding, laser welding, or the like. Two openings are formed in the lid 5b, and the upper ends of the cylindrical main bodies of the positive electrode terminal 1 and the negative electrode terminal 2 connected to the positive and negative electrodes of the power generation element housed therein are respectively projected from below. Let me. At this time, the positive electrode terminal 1 and the negative electrode terminal 2 are respectively fixed to the upper end portion of the cylindrical main body in advance by externally fixing a ceramic ring 7 and an aluminum ring 10 to each other with a sealing material such as a metal brazing material. Forming a seal. And
The aluminum rings 10 are fitted into the opening holes of the lid 5b, and sealed and fixed by TIG welding, laser welding, or the like.
Therefore, for example, as shown in FIG. 3, the positive electrode terminal 1 is fixedly connected to the positive electrode current collector 4 connected to the positive electrode of the power generating element by caulking the lower end thereof, and the upper end of the cylindrical main body is covered with the lid. The ceramic ring 7 is insulated and sealed by projecting upward from the opening 5b. Similarly, the negative electrode terminal 2 is similarly connected and fixed to the negative electrode current collector, and is insulated and sealed in the opening of the lid 5b via the ceramic ring 7.
【０００３】上記正極端子１には、円筒形の本体の上端
面に開口する雌ねじ部１ａが形成されている。そして、
ここに圧着端子７を通してボルト８を螺着することによ
り、図４に示すように、この圧着端子７に圧着された外
部のケーブル９を電池ケース５内部の発電要素の正極に
接続することができる。また、負極端子２にも同様の雌
ねじ部が形成されて、外部のケーブルが接続できるよう
になっている。[0003] The positive electrode terminal 1 is formed with a female screw portion 1a which is opened at the upper end surface of the cylindrical main body. And
By screwing the bolt 8 through the crimp terminal 7 here, the external cable 9 crimped to the crimp terminal 7 can be connected to the positive electrode of the power generating element inside the battery case 5 as shown in FIG. . Further, a similar female screw portion is formed on the negative electrode terminal 2 so that an external cable can be connected.
【０００４】ここで、非水電解質二次電池では、上記の
ように正極端子１にアルミニウム又はアルミニウム合金
を用い、負極端子２に銅又は銅合金を用いるのが一般的
である。即ち、正極端子１は、発電要素の正極や正極集
電体４と同様に非水電解液中で正の電位を持つので、こ
れによる耐腐食性を考慮すると共に、正極の基材に用い
るアルミニウム箔との溶接性も考慮して、同種のアルミ
ニウム又はアルミニウム合金を用いる。また、負極端子
２は、発電要素の負極や負極集電体と同様に非水電解液
中で負の電位を持つので、これによる耐腐食性を考慮す
ると共に、負極の基材に用いる銅箔との溶接性も考慮し
て、同種の銅又は銅合金を用いる。Here, in a non-aqueous electrolyte secondary battery, as described above, it is general that aluminum or an aluminum alloy is used for the positive electrode terminal 1 and copper or a copper alloy is used for the negative electrode terminal 2. That is, since the positive electrode terminal 1 has a positive potential in the non-aqueous electrolyte like the positive electrode of the power generation element and the positive electrode current collector 4, the corrosion resistance due to this is taken into consideration, and the aluminum used for the base material of the positive electrode is taken into consideration. The same type of aluminum or aluminum alloy is used in consideration of the weldability with the foil. Further, the negative electrode terminal 2 has a negative potential in the non-aqueous electrolyte like the negative electrode of the power generating element and the negative electrode current collector. The same kind of copper or copper alloy is used in consideration of the weldability with the same.
【０００５】[0005]
【発明が解決しようとする課題】ところが、非水電解質
二次電池は、電解液にフッ酸等の反応性の高い物質が含
まれるので、液漏れ等が生じた場合に、正極端子１や負
極端子２にこの電解液が付着すると、圧着端子７やボル
ト８に耐食性の高いステンレス鋼等を用いていたとして
も、この圧着端子７と接触する正極端子１や負極端子２
の上端面のアルミニウムや銅が腐食されて、接続部の接
触抵抗が高くなり電池性能が低下するおそれがあるとい
う問題があった。即ち、負極端子２の場合には、圧着端
子７と接触する上端面の銅がフッ酸等により酸化される
ので接触抵抗が増大する。また、正極端子１の場合、通
常はアルミニウム合金の表面にアルマイト被膜が形成さ
れるのでフッ酸等に対する耐食性は高くなるが、圧着端
子７と接触する上端面は、絶縁性のアルマイト被膜をで
きるだけ除去するようにして接続を行うので、この場合
にもフッ酸等により容易に酸化して接触抵抗が増大す
る。However, in a non-aqueous electrolyte secondary battery, since a highly reactive substance such as hydrofluoric acid is contained in an electrolyte, when a leakage or the like occurs, the positive electrode terminal 1 or the negative electrode When the electrolytic solution adheres to the terminal 2, the positive electrode terminal 1 and the negative electrode terminal 2 that come into contact with the crimp terminal 7 even if the crimp terminal 7 and the bolt 8 are made of stainless steel having high corrosion resistance.
There is a problem that the aluminum or copper on the upper end surface of the substrate may be corroded, the contact resistance of the connection portion may be increased, and the battery performance may be reduced. That is, in the case of the negative electrode terminal 2, the copper on the upper end surface in contact with the crimp terminal 7 is oxidized by hydrofluoric acid or the like, so that the contact resistance increases. In the case of the positive electrode terminal 1, an alumite film is usually formed on the surface of an aluminum alloy, so that the corrosion resistance against hydrofluoric acid and the like is increased. In this case, the contact is easily oxidized with hydrofluoric acid or the like, and the contact resistance increases.
【０００６】また、正極端子１は、放置されるとアルミ
ニウム合金が酸化して上端面にも絶縁性のアルマイト被
膜が形成されるので、圧着端子７等との接続の際にこの
アルマイト被膜を除去する必要が生じるという問題があ
る。さらに、負極端子２は、銅合金が比較的剛性率が高
いために、圧着端子７等との密着性があまりよくないの
で、これにより接触抵抗が大きくなるという問題もあっ
た。In addition, since the aluminum alloy is oxidized when the positive electrode terminal 1 is left to stand and an insulating alumite film is formed on the upper end surface, the alumite film is removed at the time of connection with the crimp terminal 7 or the like. There is a problem that it is necessary to do. Further, the negative electrode terminal 2 has a problem that the contact resistance is increased because the copper alloy has a relatively high rigidity, so that the adhesion to the crimp terminal 7 or the like is not very good.
【０００７】本発明は、かかる事情に対処するためにな
されたものであり、アルミニウムや銅等からなる正負極
端子の接続金具との接触面に金属層を形成することによ
り、液漏れ等による腐食により接触抵抗が高くなるよう
なことのない非水電解質電池を提供することを目的とし
ている。The present invention has been made in order to cope with such a situation, and by forming a metal layer on the contact surface of the positive and negative electrode terminals made of aluminum, copper, or the like with the connection fitting, corrosion due to liquid leakage or the like is caused. It is an object of the present invention to provide a non-aqueous electrolyte battery in which the contact resistance does not increase.
【０００８】[0008]
【課題を解決するための手段】請求項１の発明は、アル
ミニウム又はアルミニウム合金を用いた正極端子に接続
金具を固着して外部との接続を行う非水電解質電池にお
いて、この正極端子における少なくとも接続金具との接
触面に、スズ、鉛、ニッケル、チタン、金、銀、パラジ
ウム若しくは白金若しくはこれら２種以上の金属の合金
又はステンレス鋼による金属層を形成したことを特徴と
する。According to a first aspect of the present invention, there is provided a non-aqueous electrolyte battery in which a connection fitting is fixed to a positive electrode terminal made of aluminum or an aluminum alloy to make connection to the outside. A metal layer made of tin, lead, nickel, titanium, gold, silver, palladium, platinum, an alloy of two or more of these metals, or stainless steel is formed on a contact surface with the metal fitting.
【０００９】請求項１の発明によれば、正極端子におけ
る接続金具との接触面が耐食性のある金属層で覆われる
ので、液漏れ等により電解液が付着した場合にも接触抵
抗が増大するようなおそれがなくなる。また、接触面の
アルミニウム又はアルミニウム合金がこの金属層で覆わ
れるので、絶縁性のアルマイト被膜が形成されるのを防
止することもできる。According to the first aspect of the present invention, since the contact surface of the positive electrode terminal with the connection fitting is covered with the corrosion-resistant metal layer, the contact resistance is increased even when the electrolytic solution is attached due to liquid leakage or the like. It disappears. Further, since the aluminum or aluminum alloy on the contact surface is covered with the metal layer, it is possible to prevent the formation of an insulating alumite film.
【００１０】請求項２の発明は、前記正極端子が、接続
金具を螺着するための雌ねじ部を上端面に開口して形成
したものであり、少なくともこの上端面に金属層が形成
されたことを特徴とする。According to a second aspect of the present invention, the positive electrode terminal is formed by opening a female screw portion for screwing a connection fitting on an upper end surface, and at least a metal layer is formed on the upper end surface. It is characterized by.
【００１１】請求項２の発明によれば、正極端子の雌ね
じ部に接続金具を螺着することにより、この正極端子が
上端面の金属層を介し接続金具と接続されるようにな
る。According to the second aspect of the present invention, the connection fitting is screwed into the female screw portion of the positive terminal, so that the positive terminal is connected to the connection fitting via the metal layer on the upper end surface.
【００１２】請求項３の発明は、前記アルミニウム又は
アルミニウム合金を用いた正極端子が、銅又は銅合金を
用いた負極端子であることを特徴とする。The invention according to claim 3 is characterized in that the positive electrode terminal using aluminum or an aluminum alloy is a negative electrode terminal using copper or a copper alloy.
【００１３】請求項３の発明によれば、負極端子の接続
金具との接触面が耐食性のある金属層で覆われるので、
液漏れ等により電解液が付着した場合にも接触抵抗が低
下するようなおそれがなくなる。また、接触面の銅又は
銅合金がこの金属層を介して接続金具に圧接されるの
で、銅又は銅合金よりも剛性率の低いスズ、鉛、金、
銀、パラジウム又は白金等を金属層に用いた場合には、
接続金具との密着性を高め接触抵抗を向上させることも
できる。According to the third aspect of the present invention, the contact surface of the negative electrode terminal with the connection fitting is covered with the corrosion-resistant metal layer.
Even when the electrolyte adheres due to liquid leakage or the like, there is no possibility that the contact resistance is reduced. Also, since copper or copper alloy on the contact surface is pressed against the connection fitting through this metal layer, tin, lead, gold, and the like having a lower rigidity than copper or copper alloy are used.
When silver, palladium or platinum is used for the metal layer,
It is also possible to increase the adhesion to the connection fitting and improve the contact resistance.
【００１４】[0014]
【発明の実施の形態】以下、本発明の実施形態について
図面を参照して説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１５】図１は本発明の一実施形態を示すものであ
って、正極端子に圧着端子を通してボルトを螺着する際
の縦断面図である。なお、図２〜図４に示した従来例と
同様の機能を有する構成部材には同じ番号を付記する。FIG. 1 shows an embodiment of the present invention and is a longitudinal sectional view when a bolt is screwed through a crimp terminal to a positive terminal. Components having the same functions as those of the conventional example shown in FIGS. 2 to 4 are denoted by the same reference numerals.
【００１６】本実施形態は、図２に示した従来例と同様
の非水電解質二次電池について説明する。この非水電解
質二次電池の正極端子１は、アルミニウムからなり、図
１に示すように、円筒形の本体の上端面に開口する雌ね
じ部１ａが形成されている。この正極端子１は、下端部
にフランジ部１ｂが形成されると共に、フランジ部１ｂ
の下端面からかしめ用突起１ｃが突設されている。ま
た、この正極端子１には、雌ねじ部１ａの周縁となる上
端面を含む上端部付近の表面にスズ（Ｓｎ）若しくは鉛
（Ｐｂ）又はこれらの合金であるハンダをメッキして金
属層３を形成している。In the present embodiment, a nonaqueous electrolyte secondary battery similar to the conventional example shown in FIG. 2 will be described. The positive electrode terminal 1 of this non-aqueous electrolyte secondary battery is made of aluminum, and has a female screw portion 1a which is open at the upper end surface of a cylindrical main body as shown in FIG. The positive electrode terminal 1 has a flange portion 1b formed at a lower end and a flange portion 1b.
A protrusion 1c for caulking protrudes from the lower end surface of the stiffener. The metal layer 3 is formed on the positive electrode terminal 1 by plating tin (Sn) or lead (Pb) or a solder made of an alloy thereof on a surface near an upper end including an upper end surface which is a peripheral edge of the female screw portion 1a. Has formed.
【００１７】上記正極端子１は、発電要素の正極と接続
された正極集電体４の開口孔にかしめ用突起１ｃを挿入
してかしめることにより接続固定される。また、この正
極端子１は、予め円筒形の本体の上端部にセラミックス
リング７とアルミニウムリング１０をロウ付けにより順
に外嵌固定しセラミックス・ハーメチック・シールを形
成している。そして、蓋部５ｂの開口孔に、この正極端
子１の円筒形の本体の上端部を挿入すると共に、アルミ
ニウムリング１０を嵌合させてＴＩＧ溶接やレーザ溶接
等で封止固着することによりこの蓋部５ｂとの間を絶縁
封口する。The positive electrode terminal 1 is connected and fixed by inserting a caulking projection 1c into an opening of a positive electrode current collector 4 connected to the positive electrode of the power generating element and caulking. The positive electrode terminal 1 has a ceramics hermetic seal formed by externally fixing a ceramic ring 7 and an aluminum ring 10 to the upper end of a cylindrical main body in advance by brazing. Then, the upper end of the cylindrical main body of the positive electrode terminal 1 is inserted into the opening of the lid 5b, and the aluminum ring 10 is fitted and sealed and fixed by TIG welding, laser welding, or the like. The portion 5b is insulated and sealed.
【００１８】なお、正極端子１と正極集電体４の接続固
定は、溶接等の他の手段を用いることもでき、正極集電
体４ではなくリード材等を介して正極端子１を正極に接
続することもできる。また、この正極端子１の絶縁封口
も、このようなセラミックス・ハーメチック・シールに
限らず、ガラス・ハーメチック・シールやＯリング等の
樹脂シール材等による任意のシール手段を用いることが
できる。さらに、この正極端子１は、純アルミニウムだ
けでなくアルミニウム合金を用いることもできる。The connection between the positive electrode terminal 1 and the positive electrode current collector 4 can be fixed by other means such as welding, and the positive electrode terminal 1 is connected to the positive electrode via a lead material instead of the positive electrode current collector 4. You can also connect. Also, the insulating sealing of the positive electrode terminal 1 is not limited to such a ceramic hermetic seal, and any sealing means such as a glass hermetic seal or a resin sealing material such as an O-ring can be used. Further, the positive electrode terminal 1 can use not only pure aluminum but also an aluminum alloy.
【００１９】上記正極端子１の雌ねじ部１ａには、圧着
端子７を通してボルト８を螺着することにより、この圧
着端子７に圧着された外部のケーブル９が接続される。
この際、正極端子１の上端面は、金属層３によって覆わ
れるので、アルミニウムの表面に絶縁性のアルマイト被
膜が形成されて圧着端子７との間の接触抵抗が低下する
のを防止することができる。しかも、非水電解質二次電
池の液漏れ等により、この正極端子１にフッ酸等を含む
電解液が付着したとしても、上端面のアルミニウムが金
属層３に覆われているので、腐食して接触抵抗を増加さ
せるようなおそれがなくなる。即ち、スズや鉛は、フッ
酸等に接触すると酸化はするが、アルミニウムに比べれ
ば接触抵抗の増加がほとんどない。An external cable 9 crimped to the crimp terminal 7 is connected to the female screw portion 1a of the positive terminal 1 by screwing a bolt 8 through the crimp terminal 7.
At this time, since the upper end surface of the positive electrode terminal 1 is covered with the metal layer 3, it is possible to prevent the formation of an insulative alumite film on the surface of aluminum to prevent the contact resistance with the crimp terminal 7 from being reduced. it can. Moreover, even if an electrolyte containing hydrofluoric acid or the like adheres to the positive electrode terminal 1 due to leakage of the non-aqueous electrolyte secondary battery or the like, since the aluminum on the upper end surface is covered with the metal layer 3, corrosion occurs. There is no danger of increasing the contact resistance. That is, tin and lead oxidize when they come into contact with hydrofluoric acid or the like, but there is almost no increase in contact resistance as compared with aluminum.
【００２０】なお、上記実施形態では、金属層３にスズ
や鉛を用いたが、ニッケル（Ｎｉ）、チタン（Ｔｉ）、
金（Ａｕ）、銀（Ａｇ）、白金（Ｐｔ）若しくはパラジ
ウム（Ｐｄ）若しくはこれらの合金又はステンレス鋼を
用いることもできる。ステンレス鋼としては、クロムの
含有率の高いＳＵＳ３０４ステンレス鋼、ＳＵＳ３１６
ステンレス鋼又はＳＵＳ３１７ステンレス鋼等が好まし
い。これらの金属は、フッ酸等に対して耐食性を有する
ので、これによって接触抵抗が増加するのを防止するこ
とができる。この金属層３の形成方法としては、上記実
施形態で示したメッキ法の他に、ディッピング（浸漬）
又は溶射コーティング等による方法がある。また、金属
キャップや金属筒を溶接又は圧入等により嵌合固定する
ことにより金属層３を形成することも可能である。In the above embodiment, tin or lead is used for the metal layer 3, but nickel (Ni), titanium (Ti),
Gold (Au), silver (Ag), platinum (Pt), palladium (Pd), an alloy thereof, or stainless steel can also be used. As stainless steel, SUS304 stainless steel having a high chromium content, SUS316
Stainless steel or SUS317 stainless steel is preferred. Since these metals have corrosion resistance to hydrofluoric acid and the like, this can prevent an increase in contact resistance. As a method of forming the metal layer 3, in addition to the plating method described in the above embodiment, dipping (immersion)
Alternatively, there is a method using thermal spray coating or the like. Further, it is also possible to form the metal layer 3 by fitting and fixing a metal cap or a metal cylinder by welding or press fitting.
【００２１】また、正極端子１の雌ねじ部１ａにヘリサ
ートを装着すれば、ボルト８による強い締め付けが可能
となり、圧着端子７との密着性を高めることができるよ
うになる。さらに、上記実施形態では、上端面に開口す
る雌ねじ部１ａを形成した正極端子１について説明した
が、この雌ねじ部１ａの形成位置は任意であり、雌ねじ
部１ａに代えて雄ねじ部を突設したり、ねじを設けない
正極端子１にも同様に実施可能である。If a heli-sert is attached to the female screw portion 1a of the positive electrode terminal 1, strong tightening by the bolt 8 becomes possible, and the adhesion to the crimp terminal 7 can be improved. Further, in the above-described embodiment, the positive electrode terminal 1 having the female screw portion 1a opened at the upper end surface has been described. However, the formation position of the female screw portion 1a is arbitrary, and a male screw portion is protruded instead of the female screw portion 1a. Alternatively, the present invention can be similarly applied to the positive electrode terminal 1 having no screw.
【００２２】また、上記実施形態では、上端面に開口す
る雌ねじ部１ａを形成した正極端子１について説明した
が、この雌ねじ部１ａの形成位置は任意であり、雌ねじ
部１ａに代えて雄ねじ部を突設したり、ねじを設けない
正極端子１にも同様に実施可能である。In the above embodiment, the positive electrode terminal 1 having the female screw portion 1a opened at the upper end surface has been described. However, the formation position of the female screw portion 1a is arbitrary, and the male screw portion is replaced with the male screw portion 1a. The present invention is similarly applicable to the positive electrode terminal 1 which is not provided with a protrusion or a screw.
【００２３】さらに、上記実施形態では、正極端子１に
金属層３を形成する場合について説明したが、銅又は銅
合金を用いた負極端子２にも、正極端子１と共に又は負
極端子２単独で、同様に金属層３を形成することができ
る。この場合、非水電解質二次電池の液漏れ等により負
極端子２にフッ酸等を含む電解液が付着したとしても、
接続面の銅又は銅合金が金属層３に覆われているので、
腐食して接触抵抗を増加させるようなおそれがなくな
る。しかも、金属層３に銅又は銅合金よりも剛性率の低
いスズ、鉛、金、銀、白金又はパラジウム等を用いた場
合には、接続面の密着性を高め接触抵抗を向上させるこ
ともできるようになる。Further, in the above embodiment, the case where the metal layer 3 is formed on the positive electrode terminal 1 has been described. However, the negative electrode terminal 2 using copper or a copper alloy may be used together with the positive electrode terminal 1 or with the negative electrode terminal 2 alone. Similarly, the metal layer 3 can be formed. In this case, even if the electrolyte containing hydrofluoric acid or the like adheres to the negative electrode terminal 2 due to liquid leakage of the non-aqueous electrolyte secondary battery or the like,
Since the copper or copper alloy on the connection surface is covered with the metal layer 3,
There is no danger of corrosion and an increase in contact resistance. Moreover, when tin, lead, gold, silver, platinum, palladium, or the like having a lower rigidity than copper or a copper alloy is used for the metal layer 3, the adhesion of the connection surface can be increased and the contact resistance can be improved. Become like
【００２４】さらに、上記実施形態では、非水電解質二
次電池について説明したが、一次電池の非水電解質電池
にも同様に実施可能である。また、電池ケース５の形状
や構成も、長円筒形やケース本体部５ａと蓋部５ｂの組
み合わせには限定されない。Further, in the above embodiment, the non-aqueous electrolyte secondary battery has been described. However, the present invention can be similarly applied to a non-aqueous electrolyte battery as a primary battery. Further, the shape and configuration of the battery case 5 are not limited to a long cylindrical shape or a combination of the case body 5a and the lid 5b.
【００２５】[0025]
【発明の効果】以上の説明から明らかなように、本発明
の非水電解質電池によれば、正極端子や負極端子の接続
面に金属層を形成することにより、液漏れ等により電解
液が付着した場合にも接触抵抗が低下するようなおそれ
がなくなる。As is apparent from the above description, according to the nonaqueous electrolyte battery of the present invention, the formation of the metal layer on the connection surface of the positive electrode terminal and the negative electrode terminal allows the electrolyte to adhere due to liquid leakage or the like. In this case, there is no possibility that the contact resistance is reduced.
【図１】本発明の一実施形態を示すものであって、正極
端子に圧着端子を通してボルトを螺着する際の縦断面図
である。FIG. 1 shows one embodiment of the present invention, and is a longitudinal sectional view when a bolt is screwed through a crimp terminal to a positive electrode terminal.
【図２】非水電解質二次電池の構成例を示すものであっ
て、電池ケースの構造を示す斜視図である。FIG. 2 is a perspective view illustrating a configuration example of a non-aqueous electrolyte secondary battery and illustrating a structure of a battery case.
【図３】従来例を示すものであって、正極端子に圧着端
子を通してボルトを螺着する際の縦断面図である。FIG. 3 shows a conventional example and is a longitudinal sectional view when a bolt is screwed into a positive electrode terminal through a crimp terminal.
【図４】従来例を示すものであって、正極端子に圧着端
子を通してボルトを螺着した状態を示す縦断面図であ
る。FIG. 4 shows a conventional example, and is a longitudinal sectional view showing a state in which a bolt is screwed through a crimp terminal to a positive electrode terminal.
１ 正極端子 １ａ 雌ねじ部 ２ 負極端子 ３ 金属層 ７ 圧着端子 ８ ボルト DESCRIPTION OF SYMBOLS 1 Positive terminal 1a Female screw part 2 Negative terminal 3 Metal layer 7 Crimp terminal 8 Bolt
Claims (3)
いた正極端子に接続金具を固着して外部との接続を行う
非水電解質電池において、 この正極端子における少なくとも接続金具との接触面
に、スズ、鉛、ニッケル、チタン、金、銀、パラジウム
若しくは白金若しくはこれら２種以上の金属の合金又は
ステンレス鋼による金属層を形成したことを特徴とする
非水電解質電池。1. A non-aqueous electrolyte battery in which a connection fitting is fixed to a positive electrode terminal using aluminum or an aluminum alloy and connected to the outside, at least a contact surface of the positive electrode terminal with the connection metal is tin, lead, or the like. A non-aqueous electrolyte battery comprising a metal layer formed of nickel, titanium, gold, silver, palladium, platinum, an alloy of two or more of these metals, or stainless steel.
めの雌ねじ部を上端面に開口して形成したものであり、
少なくともこの上端面に金属層が形成されたことを特徴
とする請求項１に記載の非水電解質電池。2. The positive electrode terminal is formed by opening a female screw portion for screwing a connection fitting on an upper end surface,
The non-aqueous electrolyte battery according to claim 1, wherein a metal layer is formed on at least the upper end surface.
を用いた正極端子が、銅又は銅合金を用いた負極端子で
あることを特徴とする請求項１又は請求項２に記載の非
水電解質電池。3. The nonaqueous electrolyte battery according to claim 1, wherein the positive electrode terminal using aluminum or an aluminum alloy is a negative electrode terminal using copper or a copper alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10311709A JP2000138056A (en) | 1998-11-02 | 1998-11-02 | Nonaqueous electrolyte battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10311709A JP2000138056A (en) | 1998-11-02 | 1998-11-02 | Nonaqueous electrolyte battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000138056A true JP2000138056A (en) | 2000-05-16 |
| JP2000138056A5 JP2000138056A5 (en) | 2006-01-12 |
Family
ID=18020532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10311709A Pending JP2000138056A (en) | 1998-11-02 | 1998-11-02 | Nonaqueous electrolyte battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000138056A (en) |
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|---|---|---|---|---|
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| WO2015027894A1 (en) * | 2013-08-26 | 2015-03-05 | 国家电网公司 | Fastener |
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