JP2012069266A - Press method for electrode foil for battery - Google Patents

Press method for electrode foil for battery Download PDF

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JP2012069266A
JP2012069266A JP2010210756A JP2010210756A JP2012069266A JP 2012069266 A JP2012069266 A JP 2012069266A JP 2010210756 A JP2010210756 A JP 2010210756A JP 2010210756 A JP2010210756 A JP 2010210756A JP 2012069266 A JP2012069266 A JP 2012069266A
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uncoated
electrode foil
battery
pressing
electrode
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Hiroshi Takagi
寛 高木
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Nissan Motor Co Ltd
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    • 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

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Abstract

PROBLEM TO BE SOLVED: To improve press speed of an electrode foil for a battery.SOLUTION: This is a press method for an electrode foil for a battery 10 which comprises: a coated part 1 where electrode active material is applied continuously in a longer direction of a long current collector foil; and an uncoated part 2 where the electrode active material is not applied in a longer direction of the current collector foil. When pressing the electrode foil for a battery 10 in a thickness direction, the coated part 1 and the uncoated part 2 are pressed separately so that an amount of elongation of the uncoated part 2 due to pressing becomes the same as that of the coated part 1.

Description

本発明は、電池用の電極を製造する過程において、電極箔をプレスする方法に関する。   The present invention relates to a method for pressing an electrode foil in the process of manufacturing an electrode for a battery.

従来、帯状の活物質塗工部と活物質未塗工部が存在する活物質塗工シートをロールプレスして長尺状シート電極を形成した後、活物質未塗工部を過熱しながら、長尺状シート電極に長手方向の張力を加えるシート電極製造方法が知られている（特許文献１参照）。この方法によれば、ロールプレスによって長尺状シート電極に生じる不均一な歪みを緩和させることができる。   Conventionally, after forming an elongated sheet electrode by roll-pressing an active material coated sheet in which a strip-shaped active material coated part and an active material uncoated part exist, while overheating the active material uncoated part, A sheet electrode manufacturing method for applying a longitudinal tension to a long sheet electrode is known (see Patent Document 1). According to this method, it is possible to alleviate non-uniform distortion that occurs in the long sheet electrode due to the roll press.

特開２００５−９３２３６号公報JP 2005-93236 A

しかしながら、特許文献１に記載の方法では、活物質塗工部を厚さ方向に加圧した際に電極に不均一な歪みが生じるため、ロールプレスの速度を速くすることが難しいという問題があった。   However, the method described in Patent Document 1 has a problem that it is difficult to increase the speed of the roll press because non-uniform distortion occurs in the electrode when the active material coated portion is pressed in the thickness direction. It was.

本発明は、電池用電極箔を厚さ方向にプレスする際に、プレス速度を向上させることができる技術を提供することを目的とする。   An object of this invention is to provide the technique which can improve a press speed, when pressing the electrode foil for batteries to the thickness direction.

本発明による電池用電極箔のプレス方法は、長尺の集電箔の長手方向に連続的に電極活物質が塗布された塗工部分と、集電箔の長手方向に電極活物質が塗布されていない未塗工部分とを有する電池用電極箔をプレスする方法である。このプレス方法において、電池用電極箔を厚さ方向にプレスする際に、未塗工部分のプレスによる延伸量が塗工部分のプレスによる延伸量と同等になるように、塗工部分と未塗工部分をそれぞれ別々にプレスする。   The method for pressing a battery electrode foil according to the present invention comprises a coated portion in which an electrode active material is continuously applied in the longitudinal direction of a long current collector foil, and an electrode active material is applied in the longitudinal direction of the current collector foil. This is a method of pressing a battery electrode foil having an uncoated part. In this pressing method, when the battery electrode foil is pressed in the thickness direction, the coated portion and the uncoated portion are coated so that the stretch amount by pressing the uncoated portion is equal to the stretch amount by pressing the coated portion. Press the work parts separately.

本発明によれば、プレス後の電極箔に歪みが生じるのを防ぐことができるので、プレス速度を向上させることができる。   According to the present invention, it is possible to prevent the electrode foil after pressing from being distorted, so that the pressing speed can be improved.

金属集電箔の両面に活物質を塗布した電極を示す図である。It is a figure which shows the electrode which apply | coated the active material on both surfaces of metal current collector foil. 電極を厚さ方向に加圧する加圧ローラの側面図である。It is a side view of the pressure roller which pressurizes an electrode in the thickness direction. 活物質加圧上ローラおよび偏心上ローラの軸心の位置関係を示す図であり、図３（ａ）は側面図、図３（ｂ）は、図３（ａ）の矢印Ｙ１の方向から見た図である。It is a figure which shows the positional relationship of the axial center of an active material pressurization upper roller and an eccentric upper roller, FIG.3 (a) is a side view, FIG.3 (b) is seen from the direction of arrow Y1 of Fig.3 (a). It is a figure. 偏心上ローラが電極と接触する先端部分を拡大した図である。It is the figure which expanded the front-end | tip part which an eccentric upper roller contacts with an electrode.

以下、図面を参照しながら、一実施の形態における電池用電極箔のプレス方法について説明する。なお、電池用電極箔を用いて製造される電池は、例えば、電気自動車やハイブリッド車に搭載されて使用される。   Hereinafter, a method for pressing a battery electrode foil in an embodiment will be described with reference to the drawings. In addition, the battery manufactured using battery electrode foil is mounted and used for an electric vehicle or a hybrid vehicle, for example.

電池用の電極の製造では、集電箔の片面または両面に電極活物質を塗布して乾燥させた後、ロールプレスを行う。ロールプレス後の電極箔１０は切断加工されて、所望の大きさの電極板が製造される。   In the production of an electrode for a battery, an electrode active material is applied to one side or both sides of a current collector foil and dried, followed by roll pressing. The electrode foil 10 after the roll press is cut to produce an electrode plate having a desired size.

集電箔は、導電性材料から構成されている。集電箔を構成する材料に特に制限はなく、例えば、金属や導電性高分子材料または非導電性高分子材料に導電性フィラーが添加された樹脂が採用される。   The current collector foil is made of a conductive material. There is no restriction | limiting in particular in the material which comprises current collection foil, For example, resin which added the electroconductive filler to the metal, the electroconductive polymer material, or the nonelectroconductive polymer material is employ | adopted.

電極活物質には、正極を構成するための正極活物質、および、負極を構成するための負極活物質がある。正極活物質および負極活物質としては、既知の材料を用いることができる。   The electrode active material includes a positive electrode active material for constituting a positive electrode and a negative electrode active material for constituting a negative electrode. As the positive electrode active material and the negative electrode active material, known materials can be used.

集電箔に電極活物質を塗布する際、集電箔の幅方向に塗工部と未塗工部とを交互に形成する、いわゆるストライプ塗工が知られている。ストライプ塗工は、集電箔の長手方向に連続的な未塗工部を形成する塗工方法であり、集電箔の幅方向に連続的な未塗工部を形成する間欠塗工に比べて、塗工速度の高速化を実現しやすい。   When applying an electrode active material to a current collector foil, so-called stripe coating is known in which a coated portion and an uncoated portion are alternately formed in the width direction of the current collector foil. Stripe coating is a coating method that forms a continuous uncoated part in the longitudinal direction of the current collector foil, compared to intermittent coating that forms a continuous uncoated part in the width direction of the current collector foil. Therefore, it is easy to increase the coating speed.

図１は、ストライプ塗工によって、塗工部１と未塗工部２が形成された電極箔１０を示す図である。塗工部１は、集電箔の両面に電極活物質が塗布されている部分であり、未塗工部２は、電極活物質が塗布されていない部分である。図１に示すように、塗工部１および未塗工部２はそれぞれ、長手方向に連続的に形成されている。   FIG. 1 is a view showing an electrode foil 10 in which a coated portion 1 and an uncoated portion 2 are formed by stripe coating. The coated part 1 is a part where the electrode active material is applied on both surfaces of the current collector foil, and the uncoated part 2 is a part where the electrode active material is not applied. As shown in FIG. 1, the coating part 1 and the uncoated part 2 are each formed continuously in the longitudinal direction.

図２は、電極箔１０を厚さ方向に加圧（プレス）する加圧ローラ２０の側面図である。加圧ローラ２０は、互いに連結されている活物質加圧ローラ２１と偏心ローラ２２とから構成される。   FIG. 2 is a side view of the pressure roller 20 that presses (presses) the electrode foil 10 in the thickness direction. The pressure roller 20 includes an active material pressure roller 21 and an eccentric roller 22 that are connected to each other.

活物質加圧ローラ２１は、電極箔１０の塗工部１を加圧（プレス）するローラであり、上ローラ２１Ａおよび下ローラ２１Ｂから構成される。以下では、活物質加圧ローラ２１の上ローラ２１Ａおよび下ローラ２１Ｂをそれぞれ、活物質加圧上ローラ２１Ａおよび活物質加圧下ローラ２１Ｂと呼ぶ。活物質加圧ローラ２１の幅は、塗工部１の幅と略同一である。   The active material pressure roller 21 is a roller that presses (presses) the coating portion 1 of the electrode foil 10, and includes an upper roller 21A and a lower roller 21B. Hereinafter, the upper roller 21A and the lower roller 21B of the active material pressure roller 21 are referred to as an active material pressure upper roller 21A and an active material pressure lower roller 21B, respectively. The width of the active material pressure roller 21 is substantially the same as the width of the coating unit 1.

偏心ローラ２２は、電極箔１０の未塗工部２を加圧（プレス）するローラであり、上ローラ２２Ａおよび下ローラ２２Ｂから構成される。以下では、偏心ローラ２２の上ローラ２２Ａおよび下ローラ２２Ｂをそれぞれ、偏心上ローラ２２Ａおよび偏心下ローラ２２Ｂと呼ぶ。偏心ローラ２２の幅は、未塗工部２の幅と略同一である。   The eccentric roller 22 is a roller that presses (presses) the uncoated portion 2 of the electrode foil 10, and includes an upper roller 22A and a lower roller 22B. Hereinafter, the upper roller 22A and the lower roller 22B of the eccentric roller 22 are referred to as an eccentric upper roller 22A and an eccentric lower roller 22B, respectively. The width of the eccentric roller 22 is substantially the same as the width of the uncoated part 2.

図３は、活物質加圧上ローラ２１Ａ、および、偏心上ローラ２２Ａの軸心の位置関係を示す図であり、図３（ａ）は側面図、図３（ｂ）は、図３（ａ）の矢印Ｙ１の方向から見た図である。図３（ａ）および図３（ｂ）に示すように、活物質加圧上ローラ２１Ａの軸心３１と、偏心上ローラ２２Ａの軸心３２とは一致していない。なお、軸心とは、ローラの回転軸の中心である。   3A and 3B are views showing the positional relationship between the axial centers of the active material pressurizing upper roller 21A and the eccentric upper roller 22A. FIG. 3A is a side view, and FIG. It is the figure seen from the direction of arrow Y1. As shown in FIGS. 3A and 3B, the shaft center 31 of the active material pressurizing upper roller 21A and the shaft center 32 of the eccentric upper roller 22A do not coincide with each other. The axis is the center of the rotation axis of the roller.

同様に、偏心下ローラ２２Ｂの軸心も、活物質加圧下ローラ２１Ｂの軸心と一致していない。   Similarly, the axis of the eccentric lower roller 22B does not coincide with the axis of the active material pressing lower roller 21B.

すなわち、偏心上ローラ２２Ａの軸心は、活物質加圧上ローラ２１Ａの軸心に対してずれており、偏心下ローラ２２Ｂの軸心は、活物質加圧下ローラ２１Ｂの軸心に対してずれている。これにより、加圧ローラ２０で電極箔１０を加圧する際に、活物質加圧ローラ２１および偏心ローラ２２によって、塗工部１および未塗工部２をそれぞれ異なる圧力で加圧することができる。   That is, the axis of the eccentric upper roller 22A is deviated from the axis of the active material pressurizing upper roller 21A, and the axis of the eccentric lower roller 22B is deviated from the axis of the active material pressurizing lower roller 21B. ing. As a result, when the electrode foil 10 is pressed by the pressure roller 20, the coated portion 1 and the uncoated portion 2 can be pressed with different pressures by the active material pressure roller 21 and the eccentric roller 22.

一実施の形態における電池用電極箔のプレス方法では、電極箔１０を加圧する際に、塗工部１の伸び量と未塗工部２の伸び量とが等しくなるように、塗工部１および未塗工部２をそれぞれ同時に加圧する。例えば、加圧時の塗工部１の伸び率を０．１％で考えた場合、未塗工部２の伸び率を３％〜６％（張力：１．６〜５．０トン）とすると、偏心ローラ２２に加える圧力は、０．０３トン〜０．２トン程度とする。これにより、未塗工部２の伸び量を塗工部１の伸び量と同等にすることができる。   In the method of pressing a battery electrode foil in one embodiment, when the electrode foil 10 is pressed, the coated part 1 and the uncoated part 2 have the same elongation amount so that the elongation amount of the coated part 1 becomes equal. And the uncoated part 2 is pressurized simultaneously. For example, when the elongation percentage of the coated part 1 during pressurization is considered to be 0.1%, the elongation percentage of the uncoated part 2 is 3% to 6% (tension: 1.6 to 5.0 tons). Then, the pressure applied to the eccentric roller 22 is about 0.03 to 0.2 tons. Thereby, the elongation amount of the uncoated part 2 can be made equivalent to the elongation amount of the coated part 1.

図４は、偏心上ローラ２２Ａが電極箔１０と接触する先端部分を拡大した図である。偏心上ローラ２２Ａの先端部４０には、弾性体であるゴムのコーティングが施されている。図示は省略するが、偏心下ローラ２２Ｂの先端部にも、弾性体であるゴムのコーティングが施されている。これは、加圧時に、偏心上ローラ２２Ａと未塗工部２との間に隙間ができないようにするためである。このことを、以下で詳しく説明する。   FIG. 4 is an enlarged view of the tip portion where the eccentric upper roller 22A contacts the electrode foil 10. FIG. The tip end portion 40 of the eccentric upper roller 22A is coated with rubber which is an elastic body. Although not shown, the tip of the eccentric lower roller 22B is also coated with rubber, which is an elastic body. This is to prevent a gap from being formed between the eccentric upper roller 22A and the uncoated portion 2 during pressurization. This will be described in detail below.

塗工部１と未塗工部２との境界は、図４に示すように、常に直角な形状になっているとは限らない。すなわち、未塗工部２の幅は、常に同じ長さではなく、塗工部１との境界の形状によっては、幅が狭くなることがある。この場合、ゴムのコーティングを施さない状態で偏心ローラ２２により加圧を行うと、偏心ローラ２２と未塗工部２との間に隙間が生じてしまう。   The boundary between the coated part 1 and the uncoated part 2 is not always a right-angled shape as shown in FIG. That is, the width of the uncoated portion 2 is not always the same length, and the width may be narrowed depending on the shape of the boundary with the coated portion 1. In this case, if pressure is applied by the eccentric roller 22 without applying the rubber coating, a gap is generated between the eccentric roller 22 and the uncoated portion 2.

しかしながら、偏心上ローラ２２の先端部に、弾性体であるゴムのコーティングを施しておくことにより、電極箔１０の加圧時に、弾性体であるゴムは、電極箔１０との接触面に応じて変形するため（図４参照）、未塗工部２の幅全体を加圧することができる。これにより、未塗工部２に未加圧の部分が生じて歪みが発生してしまうのを防ぐことができる。   However, by applying a rubber coating that is an elastic body to the tip of the eccentric upper roller 22, the rubber that is an elastic body corresponds to the contact surface with the electrode foil 10 when the electrode foil 10 is pressed. In order to deform | transform (refer FIG. 4), the whole width | variety of the uncoated part 2 can be pressurized. Thereby, it can prevent that an unpressurized part arises in the uncoated part 2, and distortion will generate | occur | produce.

偏心ローラ２２によって未塗工部２を加圧する際、塗工部１と未塗工部２との境界は、塗工部１の形状に沿って加圧を行う。すなわち、塗工部１を加圧する活物質加圧ローラ２１が未塗工部２まではみ出ないようにするとともに、未塗工部２を加圧する偏心ローラ２２が塗工部１まではみ出ないようにする。これにより、未塗工部２に未加圧の部分が生じて歪みが発生してしまうのを防ぐことができる。   When the uncoated portion 2 is pressed by the eccentric roller 22, the boundary between the coated portion 1 and the uncoated portion 2 is pressed along the shape of the coated portion 1. That is, the active material pressure roller 21 that pressurizes the coated part 1 does not protrude to the uncoated part 2, and the eccentric roller 22 that pressurizes the uncoated part 2 does not protrude to the coated part 1. To do. Thereby, it can prevent that an unpressurized part arises in the uncoated part 2, and distortion will generate | occur | produce.

以上、一実施の形態における電池用電極箔のプレス方法によれば、長尺の集電箔の長手方向に連続的に電極活物質が塗布された塗工部１と、集電箔の長手方向に電極活物質が塗布されていない未塗工部２とを有する電池用電極箔１０を厚さ方向にプレスする際に、未塗工部２のプレスによる延伸量が塗工部分１のプレスによる延伸量と同等になるように、塗工部１と未塗工部２をそれぞれ別々にプレスする。これにより、加圧後の電極箔１０に歪みが生じるのを防いで、電極箔１０のプレス速度を向上させることができる。   As described above, according to the method for pressing a battery electrode foil in one embodiment, a coating portion 1 in which an electrode active material is continuously applied in a longitudinal direction of a long current collector foil, and a longitudinal direction of the current collector foil When the battery electrode foil 10 having the uncoated portion 2 to which no electrode active material is applied is pressed in the thickness direction, the stretch amount of the uncoated portion 2 due to pressing is determined by the pressing of the coated portion 1. The coated part 1 and the uncoated part 2 are pressed separately so as to be equal to the stretch amount. Thereby, it can prevent that the electrode foil 10 after pressurization produces distortion, and can improve the press speed of the electrode foil 10. FIG.

一般的に、電極箔１０は、巻き出しロール（不図示）から巻き出されてから、加圧ローラ２０で加圧された後、巻き取りロール（不図示）によって巻き取られる。一実施の形態における電池用電極箔のプレス方法によれば、加圧ローラ２０による加圧後の電極箔１０に歪みが生じないため、歪みを緩和させるための工程を設ける必要がなくなる。すなわち、巻き取りロールによる巻き出しから、巻き取りロールによる巻き取りまでの速度も向上させることができる。   In general, the electrode foil 10 is unwound from an unwinding roll (not shown), and after being pressed by the pressure roller 20, is wound up by a winding roll (not shown). According to the method for pressing an electrode foil for a battery in one embodiment, the electrode foil 10 after being pressed by the pressure roller 20 is not distorted, and therefore it is not necessary to provide a process for reducing the distortion. That is, the speed from unwinding by the winding roll to winding by the winding roll can also be improved.

また、未塗工部２を加熱しながら、電極箔に長手方向の張力をかけて歪みを緩和させる従来の技術では、塗工部１と未塗工部２との境界付近の歪みを緩和するために、塗工部１も過熱されてしまう可能性があった。しかしながら、一実施の形態における電池用電極箔のプレス方法によれば、歪みを緩和するための過熱処理を行わないため、塗工部１が過熱されてしまうこともない。   Moreover, in the conventional technique which relieves distortion by applying longitudinal tension to the electrode foil while heating the uncoated part 2, the distortion near the boundary between the coated part 1 and the uncoated part 2 is relieved. Therefore, the coating part 1 may also be overheated. However, according to the method for pressing the battery electrode foil in one embodiment, the overheat treatment for relieving the distortion is not performed, so that the coating part 1 is not overheated.

また、一実施の形態における電池用電極箔のプレス方法によれば、未塗工部２と塗工部１の境界では、塗工部１の形状に沿って未塗工部２をプレスする。これにより、未塗工部２に未加圧の部分が生じて歪みが発生してしまうのを防ぐことができる。また、未塗工部２と塗工部１の境界付近のプレス時に、未塗工部２と塗工部１の境界付近に隙間ができることで発生する応力集中を抑制することができる。   Further, according to the method for pressing the battery electrode foil in one embodiment, the uncoated part 2 is pressed along the shape of the coated part 1 at the boundary between the uncoated part 2 and the coated part 1. Thereby, it can prevent that an unpressurized part arises in the uncoated part 2, and distortion will generate | occur | produce. Moreover, the stress concentration which generate | occur | produces by making a clearance gap near the boundary of the uncoated part 2 and the coating part 1 at the time of the press vicinity of the boundary of the uncoated part 2 and the coating part 1 can be suppressed.

特に、一実施の形態における電池用電極箔のプレス方法によれば、未塗工部２のプレスを、塗工部１をプレスする活物質加圧ローラ２１に対して回転中心軸が偏心した状態で連結されている偏心ローラ２２によって行う。これにより、１回のプレス作業によって、未塗工部２のプレスによる延伸量が塗工部分１のプレスによる延伸量と同じになるように、電極箔１０をプレスすることができる。   In particular, according to the method for pressing the battery electrode foil in one embodiment, the center of rotation is eccentric with respect to the active material pressure roller 21 that presses the uncoated portion 2 when the uncoated portion 2 is pressed. This is performed by the eccentric roller 22 connected by Thereby, the electrode foil 10 can be pressed so that the stretch amount by the press of the uncoated part 2 may become the same as the stretch amount by the press of the coated part 1 by one press operation.

本発明は、上述した一実施の形態に限定されることはなく、その技術的思想の範囲内において種々の変形や変更が可能であり、それらも本発明の技術的範囲に含まれることが明白である。   The present invention is not limited to the above-described embodiment, and various modifications and changes can be made within the scope of the technical idea, and it is obvious that these are also included in the technical scope of the present invention. It is.

１…塗工部
２…未塗工部
１０…電極箔
２０…加圧ローラ
２１…活物質加圧ローラ
２２…偏心ローラ DESCRIPTION OF SYMBOLS 1 ... Coated part 2 ... Uncoated part 10 ... Electrode foil 20 ... Pressure roller 21 ... Active material pressure roller 22 ... Eccentric roller

Claims (4)

長尺の集電箔の長手方向に連続的に電極活物質が塗布された塗工部分と、前記集電箔の長手方向に前記電極活物質が塗布されていない未塗工部分とを有する電池用電極箔のプレス方法であって、
前記電池用電極箔を厚さ方向にプレスする際に、前記未塗工部分のプレスによる延伸量が前記塗工部分のプレスによる延伸量と同等になるように、前記塗工部分と前記未塗工部分をそれぞれ別々にプレスする、
ことを特徴とする電池用電極箔のプレス方法。 A battery having a coated part in which the electrode active material is continuously applied in the longitudinal direction of the long current collector foil and an uncoated part in which the electrode active material is not applied in the longitudinal direction of the current collector foil An electrode foil pressing method,
When the battery electrode foil is pressed in the thickness direction, the uncoated portion and the uncoated portion are uncoated so that the unstretched portion of the uncoated portion is stretched by the same amount as the unstretched portion. Press the work parts separately,
A method for pressing an electrode foil for a battery. 請求項１に記載の電池用電極箔のプレス方法において、
前記塗工部分と前記未塗工部分を同時にそれぞれ別々にプレスする、
ことを特徴とする電池用電極箔のプレス方法。 In the press method of the battery electrode foil of Claim 1,
Pressing the coated part and the uncoated part separately at the same time,
A method for pressing an electrode foil for a battery. 請求項１または請求項２に記載の電池用電極箔のプレス方法において、
前記未塗工部分と前記塗工部分の境界では、前記塗工部分の形状に沿って前記未塗工部分をプレスする、
ことを特徴とする電池用電極箔のプレス方法。 In the pressing method of the electrode foil for batteries of Claim 1 or Claim 2,
At the boundary between the uncoated part and the coated part, the uncoated part is pressed along the shape of the coated part.
A method for pressing an electrode foil for a battery. 請求項１から請求項３のいずれか一項に記載の電池用電極箔のプレス方法において、
前記未塗工部分のプレスを、前記塗工部分をプレスする加圧ローラに対して回転中心軸が偏心した状態で連結されている偏心ローラによって行う、
ことを特徴とする電池用電極箔のプレス方法。 In the pressing method of the electrode foil for batteries as described in any one of Claims 1-3,
The uncoated portion is pressed by an eccentric roller connected in a state where the rotation center axis is eccentric with respect to a pressure roller that presses the coated portion.
A method for pressing an electrode foil for a battery.
JP2010210756A 2010-09-21 2010-09-21 Press method for electrode foil for battery Pending JP2012069266A (en)

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