JPH0316754B2 - - Google Patents
Info
- Publication number
- JPH0316754B2 JPH0316754B2 JP63201630A JP20163088A JPH0316754B2 JP H0316754 B2 JPH0316754 B2 JP H0316754B2 JP 63201630 A JP63201630 A JP 63201630A JP 20163088 A JP20163088 A JP 20163088A JP H0316754 B2 JPH0316754 B2 JP H0316754B2
- Authority
- JP
- Japan
- Prior art keywords
- power generation
- separator
- generation element
- electrolyte
- battery
- 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
- 238000010248 power generation Methods 0.000 claims description 33
- 239000003792 electrolyte Substances 0.000 claims description 24
- 238000004804 winding Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 9
- 239000008151 electrolyte solution Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000003466 welding 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
- 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
- H01M6/10—Dry cells, i.e. cells wherein the electrolyte is rendered non-fluid with wound or folded electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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)
- Cell Separators (AREA)
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
本発明は、正極と負極とをセパレータを介して
巻回してなる発電要素を有する渦巻型電池の製造
方法に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a method for manufacturing a spiral battery having a power generating element formed by winding a positive electrode and a negative electrode with a separator in between.
(ロ) 従来の技術
第１図及び第２図は、従来の渦巻型電池の発電
要素の横断面図及び縦断面図である。これらの図
面に於いて、１は正極、２は負極、３はセパレー
タであり、発電要素への電解液の注液はこの発電
要素を電池外装缶に挿入後、電池外装缶の上方開
口部より注液装置を用いて行なわれている。この
注液の際電解液は、電池外装缶内の空気との置換
や電極及びセパレータとのなじみを経て発電要素
の上部より下部へと浸潤する。ここに於いて、渦
巻状の発電要素は、その中心部（巻き始めの部
分）に近づくにつれ周囲の電極からの締め付け応
力が大きく、またその外周部に近づくにつれて締
め付け応力が小さくなつており、電解液は締め付
け応力の大きい発電要素の中心付近で浸潤し難
く、締め付け応力の小さい発電要素の外周付近で
浸潤し易い状態となる。したがつて、注液を終え
た電池は発電要素の中心部に電解液が少なく、外
周部になる程電解液が多いという電解液分布の不
均一な電池となり、電池性能に支障をきたしてい
た。(b) Prior Art FIGS. 1 and 2 are a cross-sectional view and a vertical cross-sectional view of a power generation element of a conventional spiral battery. In these drawings, 1 is a positive electrode, 2 is a negative electrode, and 3 is a separator. Electrolyte is injected into the power generation element from the upper opening of the battery case after inserting the power generation element into the battery case. This is done using a liquid injection device. During this injection, the electrolytic solution infiltrates from the upper part to the lower part of the power generation element through displacement with the air in the battery outer can and familiarization with the electrodes and separator. Here, in the spiral power generation element, the tightening stress from the surrounding electrodes increases as it approaches its center (the beginning of winding), and the tightening stress decreases as it approaches its outer periphery. The liquid is difficult to infiltrate near the center of the power generating element where the clamping stress is high, and is likely to infiltrate near the outer periphery of the power generating element where the clamping stress is low. Therefore, after filling the battery, the electrolyte distribution was uneven, with less electrolyte in the center of the power generation element and more towards the outer periphery, which was detrimental to battery performance. .
(ハ) 発明が解決しようとする課題
本発明は、かかる点に鑑みてなされたものであ
つて、電解液注入時に生じる発電要素内の電解液
の偏在を抑え、発電要素内の電解液を均一に分布
させて、電池性能の向上を計るものである。(c) Problems to be Solved by the Invention The present invention has been made in view of the above points, and aims to suppress the uneven distribution of the electrolyte within the power generation element that occurs when the electrolyte is injected, and to uniformly distribute the electrolyte within the power generation element. The aim is to improve battery performance by distributing the
(ニ) 課題を解決するための手段
本発明の渦巻型電池の製造方法は、正極と、負
極とをセパレータを介して巻回して発電要素を構
成し、前記発電要素の中心部及び最外周部を除く
任意の位置のセパレータが、前記発電要素の上面
において少なくとも一周に亘る範囲で、セパレー
タの他の部分より突出した状態であつて、前記発
電要素を電池外装缶に挿入した後、前記他の部分
より突出せるセパレータに囲まれた部分に電解液
を注液することを特徴とするものである。(d) Means for Solving the Problems The method for manufacturing a spiral battery of the present invention includes forming a power generating element by winding a positive electrode and a negative electrode with a separator interposed therebetween, The separator at any position other than the upper surface of the power generating element is in a state of protruding from other parts of the separator over at least one circumference on the upper surface of the power generating element, and after the power generating element is inserted into the battery outer can, the separator at any position other than the The feature is that the electrolyte is injected into a part surrounded by a separator that protrudes from the part.
(ホ) 作用
本発明の構成によれば、発電要素上面の中心部
及び最外周部を除く任意の位置のセパレータが、
前記発電要素の上面において少なくとも一周に亘
る範囲で、他の部分より突出した状態とし、この
突出せるセパレータに囲まれる部分に電解液を注
入することによつて、電解液の浸潤しにくい中心
部から、電解液が満たされていく。その結果、電
解液は発電要素全体に均一に分布するようにな
る。(e) Effect According to the configuration of the present invention, the separator at any position other than the center and the outermost periphery of the top surface of the power generation element,
By making at least one circumference of the upper surface of the power generating element protrude from other parts, and injecting the electrolyte into the part surrounded by the protruding separator, the electrolyte can be removed from the center where it is difficult to infiltrate. , the electrolyte is filled. As a result, the electrolyte is evenly distributed throughout the power generation element.
(ヘ) 実施例
本発明の一実施例を、図面を用いて説明する。
第３図は本発明電池の発電要素の斜視図、第４図
は第３図の縦断面図、第５図は本発明電池の発電
要素への電解液注液時の状態説明図である。図面
に於いて、発電要素は正極１と負極２との間にセ
パレータ３を介して巻回して形成されており、セ
パレータ３の突出部４はセパレータ３の他の部分
の幅の1.1倍の幅を有し、発電要素上面の中心部
及び最外周部を除く部分で一周強セパレータ３の
他の部分より突出している。この本発明電池の発
電要素と、セパレータに突出部を持たない従来電
池の発電要素を用い、夫々電池外装缶５に発電要
素を挿入し同一量の電解液を注入した後、発電要
素を電池外装缶より取り出し、極板及びセパレー
タを内周部と外周部に２分割して電解液の含液量
の比率を測定した。注液方法は、本発明電池の場
合、第５図に示す様に、突出せるセパレータに囲
まれた部分に電解液６を注液し液面が降下すると
さらに注液するというものである。一方、従来電
池の場合は、電解液の発電要素への浸潤を確かめ
ながら少量ずつ注液を行なうものである。この結
果、極板及びセパレータの内周部と外周部の含液
比は従来電池が40：60と外周部に含液量が多いの
に対し、本発明電池は48：52と含液量は内周部と
外周部で略均一化したことがわかつた。この理由
を推測すると、本発明電池は電解液を発電要素に
注入した際、電解液は発電要素上面に広がること
なく突出せるセパレータに囲まれた部分に保持さ
れるため、電解液は浸潤し難い発電要素の内周部
から浸潤し始め、一旦内周部に浸潤された電解液
が徐々に浸潤し易い外周部に拡がり、含浸液量が
均一化したからと考えられる。(f) Embodiment An embodiment of the present invention will be described with reference to the drawings.
FIG. 3 is a perspective view of the power generating element of the battery of the present invention, FIG. 4 is a longitudinal cross-sectional view of FIG. 3, and FIG. 5 is an explanatory diagram of the state when an electrolyte is injected into the power generating element of the battery of the present invention. In the drawing, the power generation element is formed by winding a positive electrode 1 and a negative electrode 2 with a separator 3 in between, and the protrusion 4 of the separator 3 has a width 1.1 times the width of the other part of the separator 3. The separator 3 protrudes from the other parts of the separator 3 by a little more than one circumference in the upper surface of the power generation element except for the center part and the outermost periphery. Using the power generation element of the battery of the present invention and the power generation element of a conventional battery that does not have a protrusion on the separator, the power generation element is inserted into the battery exterior can 5 and the same amount of electrolyte is injected, and then the power generation element is placed in the battery exterior. The electrode plate and separator were taken out from the can and divided into two parts, an inner circumferential part and an outer circumferential part, and the ratio of the electrolytic solution content was measured. In the case of the battery of the present invention, the electrolytic solution 6 is injected into the area surrounded by the protruding separator, as shown in FIG. 5, and when the liquid level drops, further injecting is carried out. On the other hand, in the case of conventional batteries, the electrolyte is injected little by little while checking that the electrolyte has permeated into the power generation element. As a result, the liquid content ratio between the inner and outer peripheries of the electrode plates and separators is 40:60 in conventional batteries, with a large amount of liquid in the outer periphery, whereas the battery of the present invention has a liquid content of 48:52. It was found that the inner and outer peripheries were almost uniform. The reason for this is that in the battery of the present invention, when the electrolyte is injected into the power generation element, the electrolyte is held in the area surrounded by the separator that can protrude without spreading over the top surface of the power generation element, so the electrolyte is difficult to infiltrate. This is thought to be because the electrolytic solution started to infiltrate from the inner periphery of the power generation element, and the electrolytic solution that had once infiltrated the inner periphery gradually spread to the outer periphery, where it is easy to infiltrate, and the amount of impregnated liquid became uniform.
尚、発電要素上面で一段突出したセパレータ
は、その突出部の重なり合う部分の間隔が狭いの
でそのままでも突出せるセパレータにより囲まれ
る部分で電解液を保持することが可能であるが、
第３図矢印で示すセパレータの突出部の重なり合
う部分を溶着することによりその効果は更に増大
する。また、このセパレータの突出部の位置は、
発電要素の巻き取り状態及び発電要素の内外周部
の含液量の差に応じて、発電要素上面の任意の位
置に設置すれば良い。 Note that the separator that protrudes one step on the top surface of the power generation element has a narrow interval between the overlapping parts of the protrusions, so it is possible to hold the electrolyte in the area surrounded by the separator that can protrude as it is.
The effect is further enhanced by welding the overlapping portions of the separator protrusions indicated by arrows in FIG. 3. Also, the position of the protruding part of this separator is
It may be installed at any position on the top surface of the power generation element depending on the winding state of the power generation element and the difference in liquid content between the inner and outer circumferences of the power generation element.
(ト) 発明の効果
本発明の製造方法によれば、発電要素上面の中
心部及び最外周部を除く任意の位置のセパレータ
が、前記発電要素の上面において少なくとも一周
に亘る範囲で、他の部分より突出した状態とし、
前記他の部分より突出せるセパレータに囲まれる
部分に電解液を注入することにより、渦巻型電池
製造時において発電要素内の電解液の不均一分布
が生じるという問題点を解消できるので、電池性
能を向上せしめることが可能となり、この工業的
価値は極めて大きい。(g) Effects of the Invention According to the manufacturing method of the present invention, the separator at any position other than the center and outermost portion of the top surface of the power generation element is separated from other parts within at least one circumference on the top surface of the power generation element. Make it more prominent,
By injecting the electrolyte into the part surrounded by the separator that protrudes from the other parts, it is possible to solve the problem of non-uniform distribution of the electrolyte within the power generation element during the manufacture of spiral-wound batteries, thereby improving battery performance. The industrial value of this is extremely large.
第１図及び第２図は従来電池の発電要素の横断
面図及び縦断面図であり、第３図乃至第５図は本
発明電池の発電要素の斜視図、縦断面図及び電解
液の注液時の状態説明図である。
１……正極、２……負極、３……セパレータ、
４……突出部、５……電池外装缶、６……電解
液。
1 and 2 are a cross-sectional view and a longitudinal sectional view of the power generation element of a conventional battery, and FIGS. 3 to 5 are a perspective view and a longitudinal sectional view of the power generation element of the battery of the present invention, and notes on the electrolyte. It is a state explanatory diagram at the time of liquid. 1...Positive electrode, 2...Negative electrode, 3...Separator,
4... Protruding portion, 5... Battery exterior can, 6... Electrolyte.
Claims (1)
発電要素を構成し、前記発電要素の中心部及び最
外周部を除く任意の位置のセパレータが、前記発
電要素の上面において少なくとも一周に亘る範囲
で、セパレータの他の部分より突出した状態であ
つて、前記発電要素を電池外装缶に挿入した後、
前記他の部分より突出せるセパレータに囲まれた
部分に電解液を注液することを特徴とする渦巻型
電池の製造方法。1 A power generation element is constructed by winding a positive electrode and a negative electrode with a separator interposed therebetween, and the separator at any position other than the center and outermost periphery of the power generation element covers at least one circumference on the upper surface of the power generation element. , after inserting the power generation element into the battery outer can, in a state where it protrudes from other parts of the separator,
A method for manufacturing a spiral battery, comprising injecting an electrolyte into a portion surrounded by a separator that protrudes from the other portions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63201630A JPS6477881A (en) | 1988-08-11 | 1988-08-11 | Manufacture of spirally wound battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63201630A JPS6477881A (en) | 1988-08-11 | 1988-08-11 | Manufacture of spirally wound battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6477881A JPS6477881A (en) | 1989-03-23 |
| JPH0316754B2 true JPH0316754B2 (en) | 1991-03-06 |
Family
ID=16444257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63201630A Granted JPS6477881A (en) | 1988-08-11 | 1988-08-11 | Manufacture of spirally wound battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6477881A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024070820A1 (en) * | 2022-09-30 | 2024-04-04 | 株式会社村田製作所 | Secondary battery and battery pack |
-
1988
- 1988-08-11 JP JP63201630A patent/JPS6477881A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6477881A (en) | 1989-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0316754B2 (en) | ||
| US3519489A (en) | Method of making a battery | |
| GB1422293A (en) | Supports for the active material of lead accumulator electrodes | |
| JP2004146238A (en) | Separator for battery, and battery | |
| US3627586A (en) | Sealed cylindrical electrochemical cell | |
| JPH0427093Y2 (en) | ||
| JPH0514461Y2 (en) | ||
| JPS5956367A (en) | Sealed lead-acid battery | |
| JPH0635372Y2 (en) | Organic electrolyte battery | |
| KR20010027275A (en) | Sealed battery | |
| KR100277653B1 (en) | Mandrel for winding electrode roll of cylindrical battery and electrode roll manufacturing method using the same | |
| JP2602648Y2 (en) | Prismatic battery | |
| JPH0140122Y2 (en) | ||
| JPS59138055A (en) | Manufacture of storage battery | |
| KR100319109B1 (en) | Electrode of secondary battery and method for making the same | |
| JPS5996650A (en) | Injection method into cylindrical battery | |
| JPH03129678A (en) | Nonaqueous electrolyte secondary battery | |
| JPH1050339A (en) | Manufacture of lithium ion secondary battery | |
| JPH064536Y2 (en) | Lead acid battery | |
| JPS59228369A (en) | Sealed lead-acid battery | |
| JPH1050285A (en) | Battery cap assembly | |
| JPH11339840A (en) | Sealed battery and its manufacture | |
| JPS6322049B2 (en) | ||
| JPH0637572Y2 (en) | Lithium battery | |
| JPH04248250A (en) | Organic electrolyte cell |