JPH0377624B2 - - Google Patents
Info
- Publication number
- JPH0377624B2 JPH0377624B2 JP58043918A JP4391883A JPH0377624B2 JP H0377624 B2 JPH0377624 B2 JP H0377624B2 JP 58043918 A JP58043918 A JP 58043918A JP 4391883 A JP4391883 A JP 4391883A JP H0377624 B2 JPH0377624 B2 JP H0377624B2
- Authority
- JP
- Japan
- Prior art keywords
- separator
- electrode
- shaped
- battery
- rod
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/04—Cells with aqueous electrolyte
- H01M6/06—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid
- H01M6/08—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with cup-shaped electrodes
-
- 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)
- Cell Separators (AREA)
- Primary Cells (AREA)
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
本発明は正、負極をセパレータを介して同心円
状に配置せる構造の電池に係り、特にセパレータ
の成形法に関するものである。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a battery having a structure in which positive and negative electrodes are arranged concentrically with a separator interposed therebetween, and particularly relates to a method of forming the separator.
(ロ) 従来技術
この種構造を有する電池においては一般に予じ
め有底筒状に成形したセパレータが用いられてい
る。(b) Prior Art In a battery having this type of structure, a separator that is previously formed into a cylindrical shape with a bottom is generally used.
そして最近に至つては、予じめ有底筒状のセパ
レータを成形するという工程を省くため、特公昭
54−41690号公報に見られるように電池内の中心
部に位置する電極の周囲にセパレータを数重に巻
付け、そしてセパレータの下端余剰部を捻るか捻
つた後溶着して閉塞する方法が提案されている。 Recently, in order to eliminate the process of forming a bottomed cylindrical separator in advance,
As seen in Publication No. 54-41690, a method has been proposed in which a separator is wrapped several times around an electrode located at the center of the battery, and the excess portion at the lower end of the separator is twisted or twisted and then welded and closed. has been done.
この方法において電極とセパレータとの密着性
について云えば電極の周囲にセパレータを単に巻
付けるだけであり、十分に密着しているとは云え
ず電極とセパレータとの間に間隙が生じ、その結
果として電池内体積効率の面からも、又電極間距
離が長くなることに基づく電池性能の面からも問
題があつた。 Regarding the adhesion between the electrode and the separator in this method, the separator is simply wrapped around the electrode, and it cannot be said that the adhesion is sufficient and a gap is created between the electrode and the separator. There were problems both in terms of volumetric efficiency within the battery and in terms of battery performance due to the increased distance between the electrodes.
(ハ) 発明の目的
本発明は電池内中心部に位置する電極と、この
電極の外周面に配されるセパレータとの密着性を
高めて電池内体積効率及び電池性能の向上を計る
ものである。(c) Purpose of the invention The present invention aims to improve the volumetric efficiency and performance of the battery by increasing the adhesion between the electrode located at the center of the battery and the separator disposed on the outer peripheral surface of this electrode. .
(ニ) 発明の構成
本発明は上記目的を達成すべくなされたものに
して、その要旨は円弧状溝を設けた成形金型上に
帯状セパレータを介して棒状電極を配置し、該電
極を前記溝部に押込んで電極の一部外周面にセパ
レータを密着させ、ついでセパレータの残余両端
部を前記電極の残りの外周面に沿つて押圧密着さ
せると共にセパレータの両端重合部を溶着するこ
とを特徴とするセパレータの成形法にある。(d) Structure of the Invention The present invention has been made to achieve the above object, and its gist is that a rod-shaped electrode is placed on a molding die provided with an arcuate groove with a band-shaped separator interposed therebetween, and the electrode is The separator is pushed into the groove to bring the separator into close contact with a part of the outer peripheral surface of the electrode, and then the remaining both ends of the separator are pressed and brought into close contact along the remaining outer peripheral surface of the electrode, and the overlapping portions of both ends of the separator are welded. It's in the separator molding method.
本発明法によれば電極とセパレータとが一体成
形されるため電極とセパレータとは高密着状態に
維持されるものである。 According to the method of the present invention, since the electrode and the separator are integrally molded, the electrode and the separator are maintained in a highly adhesive state.
(ホ) 実施例
以下本発明法の一実施例を第１図乃至第４図に
基づき説明するに、先づ第１図に示す如く円弧状
溝１０′（本実施例においては半円形溝）を設け
た成形金型１０上にポリプロピレン不織布よりな
る帯状のセパレータ１を介して棒状（本実施例に
おいては円筒状であるが円柱状であつても良い）
のリチウム負極２を配置する。セパレータ１は１
枚でも２枚以上用いても良い。又リチウム負極の
作成法については特願昭57−208085に詳しい。(E) Example An example of the method of the present invention will be described below with reference to FIGS. 1 to 4. First, as shown in FIG. A rod-shaped (cylindrical in this example, but it may be cylindrical) is placed on a mold 10 provided with a strip-shaped separator 1 made of polypropylene nonwoven fabric.
lithium negative electrode 2 is arranged. Separator 1 is 1
One sheet or two or more sheets may be used. Further, details of the method for preparing a lithium negative electrode can be found in Japanese Patent Application No. 57-208085.
次に第２図に示す如くリチウム負極２を成形金
型１０の溝部１０′に第１の押圧部材２０によつ
て押圧挿入すればセパレータ１はＵ字状に変形
し、且リチウム負極２の下方外周面にセパレータ
１が密着することになる。 Next, as shown in FIG. 2, when the lithium negative electrode 2 is pressed and inserted into the groove 10' of the molding die 10 by the first pressing member 20, the separator 1 is deformed into a U-shape, and the lower part of the lithium negative electrode 2 is pressed. The separator 1 will come into close contact with the outer peripheral surface.
その後、第３図に示す如くセパレータ１の一方
端部１′を第２の押圧部材３０により電極２の外
周面に沿つて押圧密着させたのち、他方端部１″
を第３の押圧部材４０により電極２の外周面に沿
つて押圧密着させる。 Thereafter, as shown in FIG. 3, one end 1' of the separator 1 is pressed tightly against the outer peripheral surface of the electrode 2 by the second pressing member 30, and then the other end 1''
are pressed and brought into close contact with each other along the outer circumferential surface of the electrode 2 by the third pressing member 40.
ついで第４図に示す如くセパレータ両端部の重
合部を超音波溶接機５０を用いて溶着し、第５図
に示す如くセパレータ１と一体成形されたリチウ
ム負極２を得る。尚、使用に際してはリチウム負
極２の一端部から延長せるセパレータの余剰部分
を集束し熱溶着などによつて閉塞する。 Next, as shown in FIG. 4, the overlapping portions at both ends of the separator are welded using an ultrasonic welder 50, to obtain a lithium negative electrode 2 integrally molded with the separator 1 as shown in FIG. In use, the excess portion of the separator extending from one end of the lithium negative electrode 2 is bundled and closed by thermal welding or the like.
第６図はセパレータ１と一体成形されたリチウ
ム負極２を用いた円筒型非水電池を示し、図中３
は内側面に筒状の二酸化マンガン正極４を配設し
た正極端子兼用の外装缶、５は外装缶３と絶縁パ
ツキング６により隔離された負極端子兼用の封口
蓋であり、その内底面に負極集電体７の一端がス
ポツト溶接により固着されている。 Figure 6 shows a cylindrical non-aqueous battery using a lithium negative electrode 2 integrally formed with a separator 1.
5 is an outer can that also serves as a positive electrode terminal and has a cylindrical manganese dioxide positive electrode 4 arranged on its inner surface; 5 is a sealing lid that also serves as a negative electrode terminal and is separated from the outer can 3 by an insulating packing 6; One end of the electric body 7 is fixed by spot welding.
(ヘ) 発明の効果
本発明法によるセパレータの成形法に依れば、
袋状成形を内部に電極を配した状態で電極に対し
て押圧力を加えつつ電極と一体的に成形するもの
であるため電極とセパレータとは高密着状態に維
持されることになり、電極とセパレータとの間に
間隙が存在することを因とする電池内体積効率及
び電池性能の低下を改善することができるもので
あり、その工業的価値は極めて大である。尚、棒
状電極としては正、負極のいづれでも可能である
が、特に実施例で示したように軟性金属を用いた
場合にはセパレータとの密着性に優れるため好ま
しい。(f) Effects of the invention According to the separator molding method according to the present invention,
Since the bag-shaped molding is performed with the electrode placed inside and the electrode is integrally molded while applying a pressing force to the electrode, the electrode and separator are maintained in a highly adhesive state. It is possible to improve the decrease in internal battery volumetric efficiency and battery performance caused by the presence of a gap between the battery and the separator, and its industrial value is extremely large. The rod-shaped electrode can be either a positive electrode or a negative electrode, but it is particularly preferable to use a soft metal as shown in the examples because it has excellent adhesion to the separator.
図面はいつれも本発明に係り、第１図乃至第４
図は本発明法の製造過程を示す図、第５図は本発
明法により得たセパレータと一体成形されたリチ
ウム負極の斜視図、第６図は同上のリチウム負極
を用いた円筒型非水電池の縦断面図を夫々示す。
１……セパレータ、２……棒状電極、３……外
装缶、４……筒状正極、５……封口蓋、６……絶
縁パツキング、１０……成形金型、１０……円弧
状溝、２０，３０，４０……押圧部材。
The drawings are all related to the present invention and include Figures 1 to 4.
The figure shows the manufacturing process of the method of the present invention, Figure 5 is a perspective view of a lithium negative electrode integrally formed with a separator obtained by the method of the present invention, and Figure 6 is a cylindrical nonaqueous battery using the same lithium negative electrode. A vertical cross-sectional view of each is shown. DESCRIPTION OF SYMBOLS 1... Separator, 2... Rod-shaped electrode, 3... Exterior can, 4... Cylindrical positive electrode, 5... Sealing lid, 6... Insulating packing, 10... Molding mold, 10... Arc-shaped groove, 20, 30, 40...pressing member.
Claims (1)
タを介して棒状電極を配置し、該電極を前記溝部
に押込んで電極の一部外周面にセパレータを密着
させ、ついでセパレータの残余両端部を前記電極
の残りの外周面に沿つて押圧密着させると共にセ
パレータの両端重合部を溶着することを特徴とす
るセパレータの成形法。 ２ 前記棒状電極が軟性金属よりなることを特徴
とする特許請求の範囲第１項記載のセパレータの
成形法。[Scope of Claims] 1. A rod-shaped electrode is placed on a molding die provided with an arcuate groove with a band-shaped separator interposed therebetween, and the electrode is pushed into the groove to bring the separator into close contact with a part of the outer peripheral surface of the electrode. A method for forming a separator, which comprises pressing the remaining ends of the separator along the remaining outer circumferential surface of the electrode and welding the overlapped ends of the separator. 2. The method of forming a separator according to claim 1, wherein the rod-shaped electrode is made of a soft metal.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58043918A JPS59169072A (en) | 1983-03-16 | 1983-03-16 | Formation of separator |
| US06/588,543 US4565002A (en) | 1983-03-16 | 1984-03-12 | Method of forming a separator for a cylindrical battery |
| CA000449534A CA1224243A (en) | 1983-03-16 | 1984-03-14 | Method of forming a separator for a cylindrical battery |
| CH1308/84A CH663859A5 (en) | 1983-03-16 | 1984-03-15 | METHOD FOR PRODUCING A SEPARATOR OF A CYLINDRICAL BATTERY. |
| DE19843409584 DE3409584A1 (en) | 1983-03-16 | 1984-03-15 | METHOD FOR DESIGNING A CYLINDRICAL BATTERY SEPARATOR |
| FR8404135A FR2542925B1 (en) | 1983-03-16 | 1984-03-16 | METHOD FOR FORMING A SEPARATOR FOR A CYLINDRICAL STACK |
| GB08406992A GB2139408A (en) | 1983-03-16 | 1984-03-16 | A method of forming a separator for a cylindrical battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58043918A JPS59169072A (en) | 1983-03-16 | 1983-03-16 | Formation of separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59169072A JPS59169072A (en) | 1984-09-22 |
| JPH0377624B2 true JPH0377624B2 (en) | 1991-12-11 |
Family
ID=12677089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58043918A Granted JPS59169072A (en) | 1983-03-16 | 1983-03-16 | Formation of separator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59169072A (en) |
-
1983
- 1983-03-16 JP JP58043918A patent/JPS59169072A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59169072A (en) | 1984-09-22 |
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