JPH1143749A - Production of low warping aluminum foil for lithium battery small in distortion - Google Patents
Production of low warping aluminum foil for lithium battery small in distortionInfo
- Publication number
- JPH1143749A JPH1143749A JP9196097A JP19609797A JPH1143749A JP H1143749 A JPH1143749 A JP H1143749A JP 9196097 A JP9196097 A JP 9196097A JP 19609797 A JP19609797 A JP 19609797A JP H1143749 A JPH1143749 A JP H1143749A
- Authority
- JP
- Japan
- Prior art keywords
- foil
- aluminum
- heat treatment
- hard
- aluminum foil
- 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
- Straightening Metal Sheet-Like Bodies (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、リチウムイオン
二次電池の正極材として用いられる歪みの少ないリチウ
ム電池用アルミニウム箔の製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a low distortion aluminum foil for a lithium battery used as a positive electrode material of a lithium ion secondary battery.
【０００２】なお、この明細書において、「アルミニウ
ム」の語はアルミニウム及びその合金を含む意味で用い
る。[0002] In this specification, the term "aluminum" is used to include aluminum and its alloys.
【０００３】[0003]
【従来の技術及び発明が解決しようとする課題】上記の
ようなリチウムイオン二次電池の正極材は、ＬｉＣｏＯ
2 等の活物質とカーボン等の導電材とＰＶＤ等の結着材
とをペースト状に混練したのち、これを１０〜２０μｍ
程度のアルミニウム硬質箔の両面に１００〜２００μｍ
程度の厚みにコーティングし、次いで乾燥、プレス、ス
リット、裁断の各工程を順次的に実施することにより製
作される。2. Description of the Related Art The positive electrode material of a lithium ion secondary battery as described above is LiCoO 2.
After kneading an active material such as 2 and a conductive material such as carbon and a binder such as PVD into a paste, the mixture is 10 to 20 μm
100-200μm on both sides of aluminum hard foil
It is manufactured by coating to a thickness of about a degree and then sequentially performing each step of drying, pressing, slitting, and cutting.
【０００４】このような製造工程において、アルミニウ
ム硬質箔の形状が良くない場合（例えば幅方向の歪みに
よる凹凸があり、これが長さ方向に変化しているような
場合）、ペーストのコーティング工程において塗工むら
が発生し、活物質の厚みのばらつきが発生するという問
題がある。さらに、乾燥工程において乾燥むらが生じた
り、プレス工程において均一なプレスを行い得ず、最悪
の場合には電池ケースへの収容が困難になるというよう
な問題もある。また、上記の乾燥工程において、アルミ
ニウム硬質箔は軟化して強度が低下し、次のプレス工程
で軟化した箔が延ばされることとなるが、アルミニウム
箔は延性がありコーティング材は延性が非常に小さいた
め、アルミニウム箔に凹凸が存在しているとコーテング
材と箔との密着性が低下し、甚しい場合にはコーティン
グ材の剥離を生じるという問題もある。[0004] In such a manufacturing process, when the shape of the aluminum hard foil is not good (for example, when there is unevenness due to distortion in the width direction and this changes in the length direction), the coating is performed in the paste coating process. There is a problem that uneven work occurs and the thickness of the active material varies. Further, there is a problem that drying unevenness occurs in the drying step, uniform pressing cannot be performed in the pressing step, and in the worst case, it is difficult to accommodate the battery in the battery case. Also, in the above drying step, the aluminum hard foil is softened and the strength is reduced, and the foil softened in the next pressing step will be extended, but the aluminum foil has ductility and the coating material has very low ductility. Therefore, if the aluminum foil has irregularities, the adhesion between the coating material and the foil is reduced, and in severe cases, the coating material is peeled off.
【０００５】このようなことから、塗工むらや活物質の
剥離等のないリチウムイオン二次電池の正極材を得るた
めには、可及的に歪のないアルミニウム硬質箔の提供が
望まれる。しかもまた、今後電池容量を向上するために
は、活物質の均一塗布とその物質の密度の増大を図る必
要があり、そのためにも歪みのないより平坦なアルミニ
ウム硬質箔の提供が望まれている。[0005] In view of the above, in order to obtain a positive electrode material of a lithium ion secondary battery without coating unevenness or peeling of an active material, it is desired to provide an aluminum hard foil having as little distortion as possible. Moreover, in order to improve the battery capacity in the future, it is necessary to uniformly apply the active material and increase the density of the material. For this reason, it is desired to provide a flat aluminum hard foil without distortion. .
【０００６】しかるに、従来では、アルミニウム硬質箔
の平坦度向上のための操作は、箔圧延機の自動形状制御
装置（ＡＦＣ：Automatic Flattnes Control）によって
行われているのみであり、上述のような要請に対して今
一つ満足すべきものではなかった。However, conventionally, the operation for improving the flatness of the aluminum hard foil has been performed only by an automatic shape control device (AFC) of a foil rolling mill. I was not satisfied with it.
【０００７】この発明は、このような技術的背景に鑑み
てなされたものであって、歪みの少ない平坦なリチウム
電池用アルミニウム箔の製作、提供を課題とする。The present invention has been made in view of such a technical background, and an object of the present invention is to manufacture and provide a flat aluminum foil for a lithium battery with less distortion.
【０００８】[0008]
【課題を解決するための手段】上記課題は、箔圧延を終
了したアルミニウム硬質箔に、熱処理を実施したのちあ
るいは該熱処理と同一工程で、張力付与による形状矯正
工程を実施して該箔を０．５〜２％延ばすことを特徴と
する歪みの少ないリチウム電池用アルミニウム箔の製造
方法によって解決される。An object of the present invention is to provide an aluminum hard foil which has been subjected to foil rolling, after performing a heat treatment or in the same step as the heat treatment, performing a shape correcting step by applying tension to reduce the foil to 0%. The problem is solved by a method for producing an aluminum foil for a lithium battery with low distortion, characterized in that the aluminum foil is elongated by 0.5 to 2%.
【０００９】アルミニウム箔の材質は特に限定されるこ
とはなく、例えば１０８５、１０８０、１Ｎ３０、１１
００、１２００等の純アルミニウム系、３００３等のＡ
ｌ−Ｍｎ系、３００４等のＡｌ−Ｍｎ−Ｍｇ系、８０７
９、８０２１等のＡｌ−Ｆｅ系等の各種のものを用いれ
ば良い。また、アルミニウム硬質箔は、常法に従い熱間
圧延、冷間圧延、箔圧延の順次的実施によって製造すれ
ば良い。また、アルミニウム硬質箔の厚さは１０〜４０
μｍに設定するのが良く、特に１０〜２０μｍに設定す
るのが良い。The material of the aluminum foil is not particularly limited. For example, 1085, 1080, 1N30, 11
00, 1200 etc. pure aluminum system, 3003 etc. A
1-Mn system, Al-Mn-Mg system such as 3004, 807
Various types such as 9, 8021 and the like such as Al—Fe may be used. Further, the aluminum hard foil may be manufactured by sequentially performing hot rolling, cold rolling and foil rolling according to a conventional method. The thickness of the aluminum hard foil is 10 to 40.
The thickness is preferably set to μm, particularly preferably 10 to 20 μm.
【００１０】箔圧延後のアルミニウム硬質箔に、熱処理
を実施したのちあるいは該熱処理と同一工程で、張力付
与による矯正工程を実施してアルミニウム箔を延ばすの
は、箔の歪みを低減して良好な平坦度を得るためであ
る。しかし、０．５％未満延ばしただけでは良好な平坦
度を得ることができないため、０．５％以上延ばさなけ
ればならない。好ましくは、１％以上延ばすのが良い。
一方、２％を超えて延ばしても形状矯正効果が飽和する
とともに、２％を超えて延ばした状態では過度に軟化し
て強度が低下しているため、２％以下の範囲で延ばす必
要がある。[0010] After the heat treatment is performed on the aluminum foil after the foil rolling or in the same step as the heat treatment, a straightening step by applying tension is performed to extend the aluminum foil. This is for obtaining flatness. However, good flatness cannot be obtained only by extending the area by less than 0.5%, so that the area must be increased by 0.5% or more. Preferably, the extension is 1% or more.
On the other hand, the shape correcting effect saturates even if it is extended beyond 2%, and in the state where it is extended beyond 2%, it is excessively softened and the strength is reduced. Therefore, it is necessary to extend it within the range of 2% or less. .
【００１１】而して、箔圧延上がりのアルミニウム硬質
箔は、そのままでは安定して０．５〜２％延ばすことが
できないため、形状矯正のための張力を加えると破断の
可能性がある。そこで、この発明では、形状矯正工程に
おいて破断することなく０．５〜２％延ばすことができ
るように、前記形状矯正工程前にあるいは形状矯正工程
と同一工程でアルミニウム箔に熱処理を行ってこれを軟
化させるものとする。望ましくはアルミニウム箔の物性
値としての伸び３％程度を確保できるように熱処理を行
うのが良い。ここに、材料の物性値としての伸びは破断
伸びを示している。従って、破断直前の材料は変形して
幅及び板厚（箔厚）の減少を伴う。よって、本発明にお
ける矯正工程で箔を０．５〜２％延ばすためには、箔の
変形（マスの移動）を少なくするため、それ以上の伸び
を箔に保有させる必要がある。[0011] Since the aluminum hard foil after the foil rolling cannot be stably extended by 0.5 to 2% as it is, there is a possibility that the aluminum hard foil may break when a tension for correcting the shape is applied. Therefore, in the present invention, the aluminum foil is subjected to a heat treatment before or in the same step as the shape correcting step so that the aluminum foil can be extended by 0.5 to 2% without breaking in the shape correcting step. It shall be softened. Desirably, heat treatment is performed so as to secure an elongation of about 3% as a physical property value of the aluminum foil. Here, the elongation as a property value of the material indicates the elongation at break. Therefore, the material immediately before breaking is deformed, and the width and the thickness (foil thickness) are reduced. Therefore, in order to extend the foil by 0.5 to 2% in the straightening step in the present invention, it is necessary to allow the foil to have more elongation in order to reduce deformation (movement of mass) of the foil.
【００１２】物性値としての３％程度の伸びをアルミニ
ウム箔に保有させるための熱処理の具体的条件は、アル
ミニウム箔の材質によって相違するが、一例を挙げれば
次のようになる。The specific conditions of the heat treatment for causing the aluminum foil to have an elongation of about 3% as a physical property value vary depending on the material of the aluminum foil, but one example is as follows.
【００１３】[0013]
【表１】 [Table 1]
【００１４】なお、リチウムイオン二次電池の正極材に
用いられる場合には、熱処理工程を、後工程である乾燥
工程における温度条件（例えば１００〜２５０℃×３０
分）と合致させるのが望ましい。こうすることにより、
乾燥工程におけるアルミニウム硬質箔の軟化を抑制で
き、次のプレス工程におけるアルミニウム硬質箔とコー
ティング材との剥離を防止することができる。When used as a positive electrode material of a lithium ion secondary battery, the heat treatment step is performed at a temperature condition (for example, 100 to 250 ° C. × 30) in a subsequent drying step.
Minutes). By doing this,
Softening of the aluminum hard foil in the drying step can be suppressed, and peeling between the aluminum hard foil and the coating material in the next pressing step can be prevented.
【００１５】また、箔圧延を２枚のアルミニウム箔を重
ねた重合圧延により行う場合には、上記熱処理は１枚ず
つの箔に分離後に実施すれば良い。When the foil rolling is carried out by superimposing two aluminum foils, the above heat treatment may be carried out after separating the foils into individual foils.
【００１６】前述した形状矯正工程はテンションレベラ
ーを用いて行えば良い。テンションレベラーの一例とし
ては、図１（イ）に示すように、アルミニウム箔（１）
の厚さ方向の両側に複数個のローラ（２ａ）（２ｂ）を
並設し、これら両側のローラ（２ａ）（２ｂ）間にアル
ミニウム箔（１）を通して走行させることにより、ロー
ラ（２ａ）（２ｂ）の摩擦力を利用してアルミニウム箔
（１）に張力を加える形式のものを挙げ得る。また、図
１（ロ）に示すように、複数個のローラからなる一対の
ローラー群（３ａ）（３ｂ）に巻き渡してアルミニウム
箔（１）を走行させることにより、ローラ（３）の摩擦
力を利用してアルミニウム箔（１）に張力を加える形式
のものでも良い。この場合、図１（ハ）に示すように、
ローラ群（３ａ）（３ｂ）の中間において、アルミニウ
ム箔（１）の厚さ方向の両側に箔表面と接するローラ群
（４）を配置しても良い。The above-described shape correcting step may be performed using a tension leveler. As an example of the tension leveler, as shown in FIG.
A plurality of rollers (2a) and (2b) are juxtaposed on both sides in the thickness direction of the roller, and the rollers (2a) and (2b) are run through the aluminum foil (1) between the rollers (2a) and (2b) on both sides. A type in which tension is applied to the aluminum foil (1) using the frictional force of 2b) may be used. Further, as shown in FIG. 1 (b), the aluminum foil (1) is wound around a pair of rollers (3a) (3b) composed of a plurality of rollers so that the frictional force of the roller (3) is increased. A type in which tension is applied to the aluminum foil (1) using the above method may be used. In this case, as shown in FIG.
In the middle of the roller groups (3a) and (3b), a roller group (4) in contact with the foil surface may be arranged on both sides in the thickness direction of the aluminum foil (1).
【００１７】なお、テンションレベラーそのものは従来
より知られているものであるが、従来のテンションレベ
ラーは専ら厚さの比較的厚いシート状のアルミニウム材
に対して適用されており、厚さが厚いと材料自体に伸び
があるため、本発明のようなテンションレベラーによる
処理前の熱処理は行われていないのが実情である。Although the tension leveler itself is conventionally known, the conventional tension leveler is exclusively applied to a relatively thick sheet-like aluminum material. Since the material itself has elongation, the fact is that heat treatment before treatment by a tension leveler as in the present invention is not performed.
【００１８】上記のような形状矯正工程により、アルミ
ニウム箔にはその長さ方向に０．５〜２％延ばそうとす
る張力が加わるが、アルミニウム箔はこの延びを許容し
得るように熱処理されているから、アルミニウム箔は破
断することなく張力に応じて延ばされ、歪みが低減され
て凹凸が抑制される。In the above-described shape correcting step, a tension is applied to the aluminum foil to extend it in the longitudinal direction by 0.5 to 2%, and the aluminum foil is heat-treated so as to allow this elongation. Therefore, the aluminum foil is stretched according to the tension without breaking, the distortion is reduced, and the unevenness is suppressed.
【００１９】なお、前記熱処理はコイルのままのバッチ
処理でも良いし、コイルを巻きほどきながらの連続処理
でも良いが、連続処理により行う場合には、形状矯正工
程と同一工程で処理することができる。このように熱処
理工程と形状矯正工程とを同一工程で行う場合の装置と
して、図１（ニ）に示すように、テンションレベラーを
構成する両側のローラ群（３ａ）（３ｂ）の中間部に加
熱装置（５）を配備し、一方のローラ群（３ａ）、加熱
装置（５）、他方のローラ群（３ｂ）を順次通過するよ
うに巻きほどいたアルミニウム箔（１）を走行させる形
式のものを例示できる。なお、熱処理をバッチ式で行っ
た場合には、アルミニウム箔の長さ方向で機械的性質が
若干変動するのに対し、熱処理と形状矯正工程とを同時
的に行った場合には、このような機械的性質の変動がな
く、また効率も良い点で、両工程を同時的に実施するの
が良い。The heat treatment may be a batch treatment with the coil as it is or a continuous treatment while unwinding the coil. However, when the heat treatment is performed by a continuous treatment, the treatment may be performed in the same step as the shape correction step. it can. As shown in FIG. 1 (d), as an apparatus for performing the heat treatment step and the shape correction step in the same step, as shown in FIG. 1 (d), the intermediate part of the roller groups (3a) (3b) on both sides constituting the tension leveler is heated. A device having a device (5), in which an aluminum foil (1) unwound so as to pass through one roller group (3a), a heating device (5), and the other roller group (3b) sequentially travels. Can be illustrated. In addition, when the heat treatment is performed in a batch type, the mechanical properties slightly fluctuate in the length direction of the aluminum foil, whereas when the heat treatment and the shape correction step are performed simultaneously, such a case occurs. It is preferable to perform both steps at the same time because there is no change in mechanical properties and efficiency is high.
【００２０】こうして、形状矯正工程を終了したアルミ
ニウム硬質箔は、リチウム電池の電極材として用いられ
る。即ち、活物質と導電材と結着材とをペースト状に混
練したのち、これを前記アルミニウム硬質箔の両面に１
００〜２００μｍ程度の厚みにコーティングし、次いで
乾燥、プレス、スリット、裁断の各工程を順次的に実施
される。アルミニウム硬質箔は、形状矯正工程により
０．５〜２％延ばされて凹凸のない平坦状に矯正されて
いるから、コーティング工程における塗工むらの発生や
活物質の厚みのばらつきを防止でき、さらに、乾燥工程
における乾燥むらやプレス工程におけるプレスの不均
一、コーテング材と箔との密着性の低下等の不都合を引
き起こすことはなくなる。The aluminum hard foil that has been subjected to the shape correction step is used as an electrode material for a lithium battery. That is, after the active material, the conductive material, and the binder are kneaded into a paste, the mixture is applied to both surfaces of the aluminum hard foil for one hour.
Coating is performed to a thickness of about 00 to 200 μm, and then each step of drying, pressing, slitting, and cutting is sequentially performed. Since the aluminum hard foil is stretched by 0.5 to 2% in the shape correction process and corrected to a flat shape without irregularities, it is possible to prevent the occurrence of coating unevenness and the variation in the thickness of the active material in the coating process, Further, problems such as uneven drying in the drying step, uneven pressing in the pressing step, and reduced adhesion between the coating material and the foil are not caused.
【００２１】[0021]
【実施例】下記表２に示すような各種材質、厚さからな
るアルミニウム箔を常法により製造した。EXAMPLES Aluminum foils of various materials and thicknesses as shown in Table 2 below were produced by a conventional method.
【００２２】[0022]
【表２】 [Table 2]
【００２３】次に、Ｎｏ１〜４の各アルミニウム箔につ
いては、バッチ処理により表２に示すような条件で熱処
理したのち、図１（ロ）に示したテンションレベラーを
走行させることにより、長さ方向に張力を付与して形状
矯正を実施した。この形状矯正工程においてアルミニウ
ム箔が延ばされた割合（延び率と記している）は表２の
とおりであった。Next, each of the aluminum foils Nos. 1 to 4 was heat-treated by batch processing under the conditions shown in Table 2, and then was run in the tension leveler shown in FIG. The shape was corrected by applying tension to the. Table 2 shows the proportion (referred to as elongation) of the aluminum foil stretched in the shape correcting step.
【００２４】一方、Ｎｏ５〜８の各アルミニウム箔につ
いては、図１（ニ）に示したようなテンションレベラー
及び熱処理装置を用いて、コイルを巻きほどきながら形
状矯正と熱処理とを連続処理により同一工程で行った。
熱処理条件及び形状矯正工程においてアルミニウム箔が
延ばされた割合（延び率と記している）は表２のとおり
であった。On the other hand, for each of the aluminum foils Nos. 5 to 8, the shape correction and the heat treatment were performed continuously by unwinding the coil using a tension leveler and a heat treatment apparatus as shown in FIG. Performed in process.
Table 2 shows the heat treatment conditions and the proportion of the elongated aluminum foil in the shape correcting step (denoted as elongation).
【００２５】また、Ｎｏ９のアルミニウム箔について
は、熱処理及び形状矯正は実施しなかった。No heat treatment and shape correction were performed on the No. 9 aluminum foil.
【００２６】こうして得た各アルミニウム硬質箔を用い
て、リチウムイオン二次電池の正極材を製造した。製造
は、まずＬｉＣｏＯ2 等の活物質とカーボン等の導電材
とＰＶＤ等の結着材とをペースト状に混練したのち、こ
れを上記アルミニウム硬質箔の両面に１００μｍの厚み
にコーティングし、次いで２００℃×３０分乾燥した。
乾燥後において、各正極用材料の乾燥状態を調べたとこ
ろ、Ｎｏ１〜８のアルミニウム硬質箔を用いたものにつ
いては完全に乾燥していたが、Ｎｏ９のアルミニウム箔
を用いたものについては乾燥むらが認められた。A cathode material for a lithium ion secondary battery was manufactured using each of the aluminum hard foils thus obtained. In the production, first, an active material such as LiCoO 2, a conductive material such as carbon, and a binder such as PVD are kneaded in a paste form, and this is coated on both surfaces of the aluminum hard foil to a thickness of 100 μm. It dried at 30 degreeC x 30 minutes.
After drying, the dried state of each positive electrode material was examined. As a result, those using the aluminum hard foils No. 1 to 8 were completely dried, but those using the aluminum foil No. 9 had uneven drying. Admitted.
【００２７】次に、プレス、スリット、裁断の各工程を
実施してリチウムイオン二次電池の正極材を得た。そし
て、アルミニウム硬質箔とコーティング材との密着状態
を調べたところ、Ｎｏ１〜８のアルミニウム硬質箔を用
いたものについては剥離もほとんどなく良好な密着状態
が得られていた。なかでも１％以上延ばされたＮｏ１、
２、４、５、７のものは特に良好であり、さらに熱処理
条件と乾燥処理条件とが同じであるＮｏ２のものについ
ては、極めて良好な密着状態が得られていた。Next, the respective steps of pressing, slitting, and cutting were performed to obtain a positive electrode material of a lithium ion secondary battery. Then, when the adhesion state between the aluminum hard foil and the coating material was examined, it was found that those using the aluminum hard foils No. 1 to 8 hardly peeled off, and a good adhesion state was obtained. Among them, No1 which was extended by 1% or more,
Samples Nos. 2, 4, 5, and 7 were particularly good, and No. 2 having the same heat-treating and drying conditions had a very good adhesion.
【００２８】これに対し、Ｎｏ９のアルミニウム硬質箔
を用いたものについては、わずかな剥離が認められた。On the other hand, in the case of using the aluminum hard foil of No. 9, slight peeling was observed.
【００２９】[0029]
【発明の効果】この発明は、上述の次第で、箔圧延を終
了したアルミニウム硬質箔に、熱処理を実施したのちあ
るいは該熱処理と同一工程で、張力付与による形状矯正
工程を実施して該箔を０．５〜２％延ばすことを特徴と
するものであるから、形状矯正工程によってアルミニウ
ム硬質箔の歪みを低減でき、従って歪みに伴う凹凸の発
生を抑制でき、極めて平坦性の高いリチウム電池用アル
ミニウム箔を提供することができる。As described above, according to the present invention, the aluminum hard foil which has been subjected to the foil rolling is subjected to a heat treatment or, in the same step as the heat treatment, to a shape correction step by applying tension to the aluminum hard foil. Since it is characterized by being elongated by 0.5 to 2%, the distortion of the aluminum hard foil can be reduced by the shape correction step, so that the occurrence of irregularities due to the distortion can be suppressed, and the aluminum for lithium batteries having extremely high flatness can be obtained. A foil can be provided.
【００３０】また、矯正工程に先立ちあるいは矯正工程
と同一工程でアルミニウム箔を熱処理するから、形状矯
正工程において箔を０．５〜２％延ばすことが可能とな
り、形状矯正工程を箔の破断等の不都合を来すことなく
円滑に遂行することができる。Further, since the aluminum foil is heat-treated before the straightening step or in the same step as the straightening step, it is possible to extend the foil by 0.5 to 2% in the shape straightening step. It can be performed smoothly without inconvenience.
【図１】（イ）は形状矯正工程を実施するためのテンシ
ョンレベラーの一例を示す斜視図、（ロ）（ハ）はテン
ションレベラーの他の例を示す正面図、（ニ）はテンシ
ョンレベラーに加熱処理装置工程と形状矯正工程を同時
に行う場合の装置の一例を示す正面図である。FIG. 1A is a perspective view showing an example of a tension leveler for performing a shape correcting step, FIG. 1B is a front view showing another example of the tension leveler, and FIG. It is a front view which shows an example of the apparatus at the time of performing a heat processing apparatus process and a shape correction process simultaneously.
１…アルミニウム箔 1: Aluminum foil
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｃ２２Ｆ 1/00 ６８５ Ｃ２２Ｆ 1/00 ６８５Ｚ ６９４ ６９４Ａ ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 6 Identification code FI C22F 1/00 685 C22F 1/00 685Z 694 694A
Claims (1)
に、熱処理を実施したのちあるいは該熱処理と同一工程
で、張力付与による形状矯正工程を実施して該箔を０．
５〜２％延ばすことを特徴とする歪みの少ないリチウム
電池用アルミニウム箔の製造方法。1. After heat treatment is performed on an aluminum hard foil that has been subjected to foil rolling or in the same step as the heat treatment, a shape correction step by applying tension is performed to reduce the foil to 0.
A method for producing an aluminum foil for a lithium battery with low distortion, wherein the aluminum foil is extended by 5 to 2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9196097A JPH1143749A (en) | 1997-07-22 | 1997-07-22 | Production of low warping aluminum foil for lithium battery small in distortion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9196097A JPH1143749A (en) | 1997-07-22 | 1997-07-22 | Production of low warping aluminum foil for lithium battery small in distortion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1143749A true JPH1143749A (en) | 1999-02-16 |
Family
ID=16352177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9196097A Pending JPH1143749A (en) | 1997-07-22 | 1997-07-22 | Production of low warping aluminum foil for lithium battery small in distortion |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1143749A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004003248A1 (en) * | 2002-06-28 | 2004-01-08 | Showa Denko K.K. | Process for producing aluminum material for electrolytic capacitor electrode, aluminum material for electrolytic capacitor electrode and electrolytic capacitor |
| WO2005066389A1 (en) * | 2004-01-09 | 2005-07-21 | Showa Denko K.K. | Degreasing method for aluminium hard foil, aluminium hard foil, aluminium hard foil electrode member, and lithium ion secondary battery using said member |
| JP2008186704A (en) * | 2007-01-30 | 2008-08-14 | Matsushita Electric Ind Co Ltd | Positive electrode plate for non-aqueous secondary battery and non-aqueous secondary battery |
| JP2009019279A (en) * | 2003-10-09 | 2009-01-29 | Showa Denko Kk | Aluminum hard foil and its manufacturing method |
| US20110070492A1 (en) * | 2008-05-20 | 2011-03-24 | Taisuke Yamamoto | Electrode for a lithium secondary battery and lithium secondary battery equipped with same |
| WO2011040292A1 (en) * | 2009-09-30 | 2011-04-07 | 東洋アルミニウム株式会社 | Perforated aluminum foil, and process for production thereof |
| JP2011074468A (en) * | 2009-09-30 | 2011-04-14 | Toyo Aluminium Kk | Perforated aluminum foil, and process for production thereof |
| JP2011208254A (en) * | 2010-03-30 | 2011-10-20 | Toyo Aluminium Kk | Perforated aluminum foil, and method for producing the same |
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-
1997
- 1997-07-22 JP JP9196097A patent/JPH1143749A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004003248A1 (en) * | 2002-06-28 | 2004-01-08 | Showa Denko K.K. | Process for producing aluminum material for electrolytic capacitor electrode, aluminum material for electrolytic capacitor electrode and electrolytic capacitor |
| JP2009019279A (en) * | 2003-10-09 | 2009-01-29 | Showa Denko Kk | Aluminum hard foil and its manufacturing method |
| JP2009024262A (en) * | 2003-10-09 | 2009-02-05 | Showa Denko Kk | Hard foil of aluminum and method for producing the same |
| WO2005066389A1 (en) * | 2004-01-09 | 2005-07-21 | Showa Denko K.K. | Degreasing method for aluminium hard foil, aluminium hard foil, aluminium hard foil electrode member, and lithium ion secondary battery using said member |
| JP2008186704A (en) * | 2007-01-30 | 2008-08-14 | Matsushita Electric Ind Co Ltd | Positive electrode plate for non-aqueous secondary battery and non-aqueous secondary battery |
| US20110070492A1 (en) * | 2008-05-20 | 2011-03-24 | Taisuke Yamamoto | Electrode for a lithium secondary battery and lithium secondary battery equipped with same |
| WO2011040292A1 (en) * | 2009-09-30 | 2011-04-07 | 東洋アルミニウム株式会社 | Perforated aluminum foil, and process for production thereof |
| JP2011074468A (en) * | 2009-09-30 | 2011-04-14 | Toyo Aluminium Kk | Perforated aluminum foil, and process for production thereof |
| CN102575322A (en) * | 2009-09-30 | 2012-07-11 | 东洋铝株式会社 | Perforated aluminum foil, and process for production thereof |
| US9331339B2 (en) | 2009-09-30 | 2016-05-03 | Toyo Aluminium Kabushiki Kaisha | Perforated aluminium foil and manufacturing method thereof |
| JP2011208254A (en) * | 2010-03-30 | 2011-10-20 | Toyo Aluminium Kk | Perforated aluminum foil, and method for producing the same |
| CN112828138A (en) * | 2020-12-15 | 2021-05-25 | 乳源东阳光优艾希杰精箔有限公司 | Stretch bending and straightening production method of aluminum foil thin material |
| CN112828138B (en) * | 2020-12-15 | 2022-10-11 | 乳源东阳光优艾希杰精箔有限公司 | Stretch bending and straightening production method of aluminum foil thin material |
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