JPH01241751A - Nonaqueous electrolyte cell - Google Patents
Nonaqueous electrolyte cellInfo
- Publication number
- JPH01241751A JPH01241751A JP6897188A JP6897188A JPH01241751A JP H01241751 A JPH01241751 A JP H01241751A JP 6897188 A JP6897188 A JP 6897188A JP 6897188 A JP6897188 A JP 6897188A JP H01241751 A JPH01241751 A JP H01241751A
- Authority
- JP
- Japan
- Prior art keywords
- negative electrode
- lithium
- projections
- electrode active
- punch
- 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.)
- Granted
Links
- 239000011255 nonaqueous electrolyte Substances 0.000 title claims abstract description 9
- 239000007773 negative electrode material Substances 0.000 claims description 14
- 229910052744 lithium Inorganic materials 0.000 abstract description 32
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 31
- 239000013543 active substance Substances 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 238000005520 cutting process Methods 0.000 abstract 1
- 238000002788 crimping Methods 0.000 description 19
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 241001289435 Astragalus brachycalyx Species 0.000 description 1
- 235000002917 Fraxinus ornus Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/06—Electrodes for primary cells
- H01M4/08—Processes of manufacture
- H01M4/12—Processes of manufacture of consumable metal or alloy electrodes
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、リチウム等の軟質軽金属を負極活物質とする
非水電解液電池に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a non-aqueous electrolyte battery using a soft light metal such as lithium as a negative electrode active material.
本発明は、リチウム等の軟質軽金属を負極活物質とする
非水電解液電池において、圧着面に凹凸を有する模様を
設けた圧着パンチにより、負極活物質と負極缶を密着さ
せることにより、非水電解液電池の大電流化を図るもの
である。In a non-aqueous electrolyte battery using a soft light metal such as lithium as a negative electrode active material, the present invention provides a non-aqueous electrolyte battery that uses a soft light metal such as lithium as a negative electrode active material by bringing the negative electrode active material into close contact with the negative electrode can using a crimping punch with an uneven pattern on the crimping surface. This is intended to increase the current capacity of electrolyte batteries.
従来、リチウム等の軟質軽金属からなる負極活物質を圧
着パンチのフラット面で、負極缶内面に圧着していた。Conventionally, a negative electrode active material made of a soft light metal such as lithium has been crimped onto the inner surface of a negative electrode can using the flat surface of a crimping punch.
また、リチウムと負極缶を圧着させることは、例えば特
開昭５７−１２８（ｉｆ号公ｔＩＩに開示されている。Furthermore, press-bonding lithium and a negative electrode can is disclosed in, for example, Japanese Patent Application Laid-Open No. 57-128 (if publication tII).
従来の電池は圧着パンチのフラット面で、リチウムを負
極缶内面に圧着していたので、圧着部分が点在し、リチ
ウムと負極缶のリード性が悪くなり、大きな電流を取り
出すことができない欠点があった・
〔！！題を解決するための手段〕
上記の問題点を解決するためにこの発明は、圧着面に凹
凸を有する模様を設けた圧着パンチにより、負極活物質
と負極缶の密着性を向上せしめ、大電流が取り出せる非
水電解液電池を得るものである。In conventional batteries, the lithium was crimped onto the inside of the negative electrode can using the flat surface of the crimping punch, so the crimped parts were scattered, making it difficult to lead between the lithium and the negative electrode can, making it impossible to extract a large current. there were· 〔! ! [Means for Solving the Problems] In order to solve the above problems, the present invention improves the adhesion between the negative electrode active material and the negative electrode can by using a crimping punch with a pattern having concavities and convexities on the crimping surface. This provides a non-aqueous electrolyte battery that can be taken out.
圧着面に凹凸を有する模様を設けた圧着パンチで負極活
物質を負極缶に圧着すると密着性が向上する理由につい
て説明する。The reason why adhesion is improved when a negative electrode active material is crimped onto a negative electrode can using a crimping punch having an uneven pattern on the crimping surface will be explained.
従来の圧着パンチはフラット面で、負極活物質を負極缶
に圧着する場合には、負掻缶内面フラント部と圧着パン
チ面とが平行に成りＩＫ＜、間に介在する負極活物質は
強く加圧される部分のみ圧着することになる。Conventional crimping punches have a flat surface, and when crimping a negative electrode active material to a negative electrode can, the inner flant part of the negative electrode can and the crimping punch surface are parallel to each other, and the negative electrode active material interposed between them is strongly applied. Only the parts to be pressed will be crimped.
また、圧着パンチ全面で押圧するとどうしても打抜され
たリチウムシートの外周部のみが９極缶と密着し、中央
部は空気溜りが生じて密着しない。Furthermore, if the entire surface of the crimping punch is pressed, only the outer peripheral portion of the punched lithium sheet will come into close contact with the 9-electrode can, and the central portion will not come into close contact due to air pockets.
このリチウム外周部が負極缶に密着する理由は打抜バリ
があって圧着パンチで強く押圧されることと新しいリチ
ウム面が露出している為と考えられる。The reason why this lithium outer peripheral part adheres closely to the negative electrode can is thought to be because there is a punching burr and it is strongly pressed by the crimping punch, and because the new lithium surface is exposed.
一方、本発明は圧着パンチ面に凹凸を有する模様を設け
ているので、リチウムの外周部だけでなく他の部分も密
着する。特に、凸部が強くリチウムに押圧するので凸部
が打った部分の密着性が強い、また、この凸部の模様は
所々切られているので、この切欠部からリチウムを押圧
するときに空気が逃げるので、リチウムの中央部も負極
缶と密着する。On the other hand, in the present invention, the surface of the crimping punch is provided with an uneven pattern, so that not only the outer circumference of the lithium but also other parts are closely attached. In particular, since the convex part presses strongly against the lithium, the adhesion of the part hit by the convex part is strong.Also, the pattern of this convex part is cut out in places, so when pressing the lithium through the notches, air is released. As the lithium escapes, the center of the lithium also comes into close contact with the negative electrode can.
第１図は本発明を適用した圧着パンチ面の模様を示した
図である。FIG. 1 is a diagram showing a pattern on the surface of a pressure bonding punch to which the present invention is applied.
図中、ｌは凸部で、高さ０．２ ｍｍ、 ２は凹部で
ある。このパンチ外径は１６．８ｍ−で、凸部１の幅は
１■−である、凹部２の幅は０．７５５ｍである。また
、凸部１の切欠部３の幅は２−である。In the figure, 1 is a convex portion with a height of 0.2 mm, and 2 is a concave portion. The outer diameter of this punch is 16.8 m, the width of the protrusion 1 is 1 -, and the width of the recess 2 is 0.755 m. Further, the width of the notch 3 of the convex portion 1 is 2-.
次に、圧着パンチ面に模様を付けた場合と付けない場合
のリチウムと負極缶の密着性を調べた。Next, we investigated the adhesion between lithium and the negative electrode can with and without patterns on the surface of the crimping punch.
密着性テストは負極借上へ外径１６ｍｍ、厚み０．２８
ｍ１のリチウムを＠置し、圧力１００ｋｇ／−でプレス
し、リチウムと負極缶の密着面積で評価した。The adhesion test was carried out using a negative electrode with an outer diameter of 16 mm and a thickness of 0.28 mm.
ml of lithium was placed and pressed at a pressure of 100 kg/-, and the adhesion area between the lithium and the negative electrode can was evaluated.
密着がリチウムの外周部だけで、中央部が密着していな
いのを不良として扱った。If the lithium was in close contact only at the outer periphery and not at the center, it was treated as a defect.
本発明と従来例を比較して第１表に示す、デー以上説明
したことがら、本発明は負極活物質と負極缶の密着性が
著しく向上した。その手段として圧着パンチ面に凹凸を
有する模様を配設して効果的に利用した。A comparison of the present invention and the conventional example is shown in Table 1.As explained above, the present invention significantly improved the adhesion between the negative electrode active material and the negative electrode can. As a means of achieving this, a pattern having concavities and convexities was provided on the surface of the crimping punch and was effectively utilized.
なお、パンチ面の模様は任意に設定できる。−例を示せ
ば、第２図に示す模様がある０図中、２１は凸部、２２
は凹部、２３は切欠部である。Note that the pattern on the punch surface can be set arbitrarily. - To give an example, in Figure 0 with the pattern shown in Figure 2, 21 is a convex part, 22
is a recess, and 23 is a notch.
以下に本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below based on the drawings.
実施例１
第３図は本発明を通用した第１の実施例＋１１を示す断
面図である。電池はＣ３２４３Ｂ （公称界■７２ｓＡ
ｈ、 ２４Ｘ３８Ｘ０．５ｍｍ）である。Embodiment 1 FIG. 3 is a sectional view showing a first embodiment +11 in which the present invention is applied. The battery is C3243B (nominal field ■72sA
h, 24X38X0.5mm).
図中、３１は正極缶、３２はＭｎ０１を主体とした正極
合剤、３３はセパレーク、３４は負極化３５内面に配設
され、圧着されている金属リチウムである。３６゜３７
は封口材である。In the figure, 31 is a positive electrode can, 32 is a positive electrode mixture mainly composed of Mn01, 33 is a separator, and 34 is metal lithium which is disposed on the inner surface of the negative electrode 35 and is press-bonded. 36°37
is a sealing material.
リチウム３４を圧着するパンチ面に第１図のような模様
を付けた本発明電池と模様を付けていない従来電池の放
電法度毎閉路電圧を比較した。The closed-circuit voltage at each discharge rate was compared between a battery of the present invention in which a pattern as shown in FIG. 1 was provided on the punch surface on which the lithium 34 was crimped, and a conventional battery without a pattern.
閉路電圧は、−１０℃で測定し、２−＾ｈで１秒間放電
したときの最小債である。結果を第２表に示す、データ
はｎ”−１２である。単位は電圧やである。The closed circuit voltage is the minimum voltage measured at -10°C and discharged for 1 second at 2-^h. The results are shown in Table 2, where the data is n''-12.The unit is voltage.
第２表
表２より明らかなように、本発明電池は従来電池に比べ
て、放電深度毎の閉路電圧が高く、かつバラツキも小さ
く優れていることがわかる。As is clear from Table 2, it can be seen that the battery of the present invention has a higher closed circuit voltage for each depth of discharge and is superior to the conventional battery with less variation.
すなわち、放電深度毎の大電流パルス特性が優れている
。That is, the large current pulse characteristics for each depth of discharge are excellent.
この本発明の優れている理由は、金属リチウムと負掻缶
の密着面積が従来電池に比べて増加したため、大電流を
取り出す時でも電池反応が表面積が大きい分向部抵抗が
小さくなり、スムースに行われたためと考える。The reason why this invention is superior is that the contact area between the metal lithium and the scraper can is increased compared to conventional batteries, so even when drawing out a large current, the battery reaction can occur smoothly due to the large surface area, which reduces the resistance of the polar parts. I think this is because it was done.
尚、本実施例ではリチウムを直接圧着パンチでプレス加
工したが、リチウム３４の上にセパレータ３３を載置し
てからプレスしても同様の効果が期待できる。In this example, lithium was directly pressed using a compression punch, but the same effect can be expected even if the separator 33 is placed on the lithium 34 and then pressed.
実施例２
第４図は本発明を適用した第２の実施例（２）を示す断
面図である。電池はＣＲ２０１６である０図中、４１は
正極缶、４２はＭｎ０１を主体とした正極合剤、４３は
セパレータ、４４は負極缶４５の内面に配設され、圧着
されている金属リチウムである。４６はガスケットであ
る。Embodiment 2 FIG. 4 is a sectional view showing a second embodiment (2) to which the present invention is applied. The battery is CR2016. In the figure, 41 is a positive electrode can, 42 is a positive electrode mixture mainly composed of Mn01, 43 is a separator, and 44 is metal lithium which is arranged and crimped on the inner surface of the negative electrode can 45. 46 is a gasket.
リチウム４４を圧着するパンチ面に第２図のような模様
を付けた本発明電池と模様を付けない従来電池の放電源
度毎閉路電圧を比較した。閉路電圧は一１０℃で測定し
、負荷抵抗５００Ωで５秒間放電したときの最小値であ
る。結果を第３表に示す。The closed-circuit voltage per discharge power level was compared between a battery of the present invention in which a pattern as shown in FIG. 2 was provided on the punch surface on which the lithium 44 was crimped, and a conventional battery without a pattern. The closed circuit voltage was measured at -10°C and is the minimum value when discharged for 5 seconds with a load resistance of 500Ω. The results are shown in Table 3.
データはｎ＝１２である。単位は電圧Ｍである。The data are n=12. The unit is voltage M.
第２表
表３より明らかなように、本発明電池は従来電池に比べ
て、放電深度毎の閉路電圧が高く、かつバラツキも小さ
く優れていることがわかる。As is clear from Table 2 and Table 3, it can be seen that the battery of the present invention has a higher closed circuit voltage for each depth of discharge and is superior to the conventional battery with less variation.
すなわち、放電深度毎の大電流パルス特性が優れている
。That is, the large current pulse characteristics for each depth of discharge are excellent.
また、負掻缶にネット溶接されている場合やリチウム以
外の軟質軽金属を負極活物質として用いる場合にも本発
明は適用でき効果がある。Furthermore, the present invention can be applied and is effective even when the negative electrode is net-welded to the negative electrode can or when a soft light metal other than lithium is used as the negative electrode active material.
以上の説明からも明らかなように、本発明においては、
圧着面に凹凸を有する模様を設けた圧着パンチにより、
負極活物質と負極缶を密着して、負極活物質の反応面積
を大きくしているので、大電流パルス特性に優れた非水
電解液電池を堤供することができる。As is clear from the above description, in the present invention,
The crimping punch has an uneven pattern on the crimping surface.
Since the negative electrode active material and the negative electrode can are brought into close contact with each other to increase the reaction area of the negative electrode active material, a non-aqueous electrolyte battery with excellent large current pulse characteristics can be provided.
第１図、第２図は本発明を適用した圧着パンチ面の模様
を示す第１の実施例、および第２の実施例、第３図、第
４図は本発明を適用した井水電解液電池の第一の実施例
、および第二の実施例を示す断面図である。
３１、４１・・・正極缶
３２、４２・・・正極合剤
３３、４３・・・セパレータ
３４、４４・・・リチウム
３５、４５・・・負極缶
３６、３７・・・封口材
４６・・・・・ガスケット
以上
出願人 セイコー電子部品株式会社
代理人 セイコー電子工業株式会社
／＄突預８１；ようＩマンナの正面口
笛１図
本発明による／Ｙ：／子の異型の正面図第 ２ 図FIGS. 1 and 2 show a first example showing the pattern of the crimping punch surface to which the present invention is applied, and a second example, and FIGS. 3 and 4 show a well water electrolyte to which the present invention is applied. FIG. 2 is a cross-sectional view showing a first example and a second example of a battery. 31, 41... Positive electrode cans 32, 42... Positive electrode mixture 33, 43... Separators 34, 44... Lithium 35, 45... Negative electrode cans 36, 37... Sealing material 46... ...Gasket and more Applicant Seiko Electronic Components Co., Ltd. Agent Seiko Electronics Co., Ltd. / $81; Front view of I manna front whistle 1 Figure according to the present invention /Y: / Child's variant front view Figure 2
Claims (1)
、負極活物質と負極缶を密着させることを特徴とする非
水電解液電池。A non-aqueous electrolyte battery characterized in that a negative electrode active material and a negative electrode can are brought into close contact with each other by a pressure bonding punch having an uneven pattern on the pressure bonding surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63068971A JP2816975B2 (en) | 1988-03-23 | 1988-03-23 | Non-aqueous electrolyte battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63068971A JP2816975B2 (en) | 1988-03-23 | 1988-03-23 | Non-aqueous electrolyte battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01241751A true JPH01241751A (en) | 1989-09-26 |
| JP2816975B2 JP2816975B2 (en) | 1998-10-27 |
Family
ID=13389065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63068971A Expired - Lifetime JP2816975B2 (en) | 1988-03-23 | 1988-03-23 | Non-aqueous electrolyte battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2816975B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012014840A (en) * | 2010-06-29 | 2012-01-19 | Panasonic Corp | Coin cell and method of manufacturing the same |
| CN113328210A (en) * | 2021-05-27 | 2021-08-31 | 贵州梅岭电源有限公司 | Lithium metal negative plate of lithium battery and preparation method thereof |
| CN113328211A (en) * | 2021-05-27 | 2021-08-31 | 贵州梅岭电源有限公司 | High-energy-density lithium primary battery negative plate and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5521865A (en) * | 1978-08-03 | 1980-02-16 | Yuasa Battery Co Ltd | Preparation of cathode for flat lithium battery |
| JPS5846574A (en) * | 1981-09-11 | 1983-03-18 | Fuji Elelctrochem Co Ltd | Nonaqueous electrolyte battery and its manufacture |
| JPS63313468A (en) * | 1987-06-16 | 1988-12-21 | Toshiba Battery Co Ltd | Manufacture of flat type nonaqueous electrolyte battery |
-
1988
- 1988-03-23 JP JP63068971A patent/JP2816975B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5521865A (en) * | 1978-08-03 | 1980-02-16 | Yuasa Battery Co Ltd | Preparation of cathode for flat lithium battery |
| JPS5846574A (en) * | 1981-09-11 | 1983-03-18 | Fuji Elelctrochem Co Ltd | Nonaqueous electrolyte battery and its manufacture |
| JPS63313468A (en) * | 1987-06-16 | 1988-12-21 | Toshiba Battery Co Ltd | Manufacture of flat type nonaqueous electrolyte battery |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012014840A (en) * | 2010-06-29 | 2012-01-19 | Panasonic Corp | Coin cell and method of manufacturing the same |
| CN113328210A (en) * | 2021-05-27 | 2021-08-31 | 贵州梅岭电源有限公司 | Lithium metal negative plate of lithium battery and preparation method thereof |
| CN113328211A (en) * | 2021-05-27 | 2021-08-31 | 贵州梅岭电源有限公司 | High-energy-density lithium primary battery negative plate and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2816975B2 (en) | 1998-10-27 |
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