JPWO2020045009A1 - Manufacturing method of electrode structure - Google Patents

Manufacturing method of electrode structure Download PDF

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JPWO2020045009A1
JPWO2020045009A1 JP2020540215A JP2020540215A JPWO2020045009A1 JP WO2020045009 A1 JPWO2020045009 A1 JP WO2020045009A1 JP 2020540215 A JP2020540215 A JP 2020540215A JP 2020540215 A JP2020540215 A JP 2020540215A JP WO2020045009 A1 JPWO2020045009 A1 JP WO2020045009A1
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electrode
laminating
members
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raw fabric
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弘士 大森
弘士 大森
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Zeon Corp
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
    • 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
    • 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

Abstract

本発明は、異物混入の原因となる虞が低減された電極構造体を効率的に製造する方法を提供する。本発明の電極構造体の製造方法は、第一電極、セパレータ、第二電極、セパレータがこの順で多数積層されてなる電極構造体の製造方法であって、電極構造体の構成部材と、構成部材を厚み方向に挟持する挟持部材とを備える積層用部材を準備する工程（Ａ）と、積層用部材を位置決めしつつ構成部材の厚み方向が積層方向となるように積層する工程（Ｂ）と、積層された積層用部材から挟持部材を除去する工程（Ｃ）とを含み、積層用部材は、挟持部材で両端部を挟持された第一電極または第二電極からなる電極と、電極の少なくとも一方の表面側に設けられ、挟持部材間で電極の表面に貼り合わされると共に両端部が挟持部材を介して電極に対向するセパレータとを備える積層体を含み、工程（Ｂ）では、挟持部材を利用して位置決めを行う。The present invention provides a method for efficiently producing an electrode structure with a reduced risk of causing foreign matter contamination. The method for manufacturing an electrode structure of the present invention is a method for manufacturing an electrode structure in which a large number of first electrodes, separators, second electrodes, and separators are laminated in this order. A step (A) of preparing a laminating member including a sandwiching member for sandwiching the member in the thickness direction, and a step (B) of laminating the constituent members so that the thickness direction of the constituent members is the laminating direction while positioning the laminating member. Including the step (C) of removing the sandwiching member from the laminated stacking member, the stacking member includes an electrode composed of a first electrode or a second electrode whose both ends are sandwiched by the sandwiching member, and at least one of the electrodes. In the step (B), the sandwiching member includes a laminated body provided on one surface side, which is bonded to the surface of the electrode between the sandwiching members and has separators having both ends facing the electrode via the sandwiching member. Use it for positioning.

Description

本発明は、電極構造体の製造方法に関するものである。 The present invention relates to a method for manufacturing an electrode structure.

リチウムイオン二次電池などの二次電池は、小型で軽量、且つエネルギー密度が高く、更に繰り返し充放電が可能という特性があり、幅広い用途に使用されている。そして、二次電池は、一般に、正極、負極、および、正極と負極とを隔離して正極と負極との間の短絡を防ぐセパレータなどの電池部材を備えている。 Secondary batteries such as lithium-ion secondary batteries are small and lightweight, have high energy density, and can be repeatedly charged and discharged, and are used in a wide range of applications. A secondary battery generally includes a positive electrode, a negative electrode, and a battery member such as a separator that separates the positive electrode and the negative electrode to prevent a short circuit between the positive electrode and the negative electrode.

ここで、二次電池の構造としては、電極（正極、負極）およびセパレータを交互に積層してなる積層型、並びに、長尺の正極、セパレータおよび負極を重ねて同心円状に巻いてなる捲回型などが知られている。中でも、近年では、エネルギー密度、安全性、品質および耐久性に優れている観点から、多数の電極（正極、負極）およびセパレータを交互に積層してなる電極構造体を有する積層型二次電池が注目されている。 Here, as the structure of the secondary battery, a laminated type in which electrodes (positive electrode, negative electrode) and separators are alternately laminated, and a winding in which long positive electrodes, separators and negative electrodes are laminated and wound concentrically. The type etc. are known. Above all, in recent years, from the viewpoint of excellent energy density, safety, quality and durability, a laminated secondary battery having an electrode structure in which a large number of electrodes (positive electrode, negative electrode) and separators are alternately laminated has been introduced. Attention has been paid.

そして、積層型二次電池の製造方法としては、例えば、電極とセパレータとが交互に積層された基本単位体を整列用マガジンに積載して整列させた後、積層用マガジンに移送し、複数個の基本単位体を揃えて積層することにより電極組立体（電極構造体）を形成する工程を含む方法が提案されている（例えば、特許文献１参照）。具体的には、特許文献１では、整列用マガジンの側壁に基本単位体を係止させて基本単位体を整列させた後、整列させた基本単位体をロボットアームで積層用マガジンに移送することにより、積層型二次電池に用いられる電極組立体を形成している。 Then, as a method for manufacturing a laminated secondary battery, for example, a basic unit in which electrodes and separators are alternately laminated is loaded on an alignment magazine and aligned, and then transferred to a stacking magazine to obtain a plurality of layers. A method including a step of forming an electrode assembly (electrode structure) by aligning and laminating the basic units of the above has been proposed (see, for example, Patent Document 1). Specifically, in Patent Document 1, after the basic unit bodies are locked on the side wall of the alignment magazine to align the basic unit bodies, the aligned basic unit bodies are transferred to the stacking magazine by a robot arm. As a result, an electrode assembly used for a laminated secondary battery is formed.

特開２０１６−５１５７５３号公報Japanese Unexamined Patent Publication No. 2016-515753

しかし、特許文献１に記載の方法では、整列用マガジンの側壁に基本単位体を係止させることにより基本単位体を整列させているため、基本単位体を整列用マガジンの側壁に当接させた際に基本単位体を構成する電極の電極合材層に欠け等が生じ、二次電池中への異物混入が起こる虞があった。 However, in the method described in Patent Document 1, since the basic unit bodies are aligned by locking the basic unit bodies to the side walls of the alignment magazine, the basic unit bodies are brought into contact with the side walls of the alignment magazine. At that time, the electrode mixture layer of the electrodes constituting the basic unit may be chipped, and foreign matter may be mixed into the secondary battery.

このような問題に対し、電極とセパレータとを個別に位置決めして積層することにより電極構造体を形成することも考えられる。しかし、電極とセパレータとを個別に位置決めして積層する方法は、作業が煩雑であり、電極構造体を効率的に製造することができない。 To solve such a problem, it is conceivable to form an electrode structure by individually positioning and laminating the electrode and the separator. However, the method of individually positioning and laminating the electrode and the separator is complicated, and the electrode structure cannot be efficiently manufactured.

そこで、本発明は、異物混入の原因となる虞が低減された電極構造体を効率的に製造する方法を提供することを目的とする。 Therefore, an object of the present invention is to provide a method for efficiently manufacturing an electrode structure in which the risk of causing foreign matter contamination is reduced.

この発明は、上記課題を有利に解決することを目的とするものであり、本発明の電極構造体の製造方法は、第一電極と、セパレータと、第二電極と、セパレータとがこの順で多数積層されてなる電極構造体の製造方法であって、前記電極構造体の構成部材と、前記構成部材を厚み方向に挟持する挟持部材とを備える積層用部材を準備する工程（Ａ）と、前記積層用部材を位置決めしつつ前記構成部材の厚み方向が積層方向となるように積層する工程（Ｂ）と、積層された前記積層用部材から前記挟持部材を除去する工程（Ｃ）とを含み、前記積層用部材は、前記挟持部材で両端部を挟持された前記第一電極または前記第二電極からなる電極と、前記電極の少なくとも一方の表面側に設けられ、前記挟持部材間で前記電極の表面に貼り合わされると共に両端部が前記挟持部材を介して前記電極に対向するセパレータとを備える積層体を含み、前記工程（Ｂ）では、前記挟持部材を利用して前記位置決めを行うことを特徴とする。このように、構成部材を厚み方向に挟持する挟持部材を利用して位置決めを行えば、電極の電極合材層に欠け等が生じるのを抑制し、二次電池中への異物混入の虞を低減することができる。また、積層体を含む積層用部材を積層すれば、電極とセパレータとを個別に位置決めして積層する場合と比較し、電極構造体を効率的に製造することができる。 The present invention aims to solve the above problems advantageously, and in the method for manufacturing the electrode structure of the present invention, the first electrode, the separator, the second electrode, and the separator are in this order. A step (A) of preparing a laminating member including a constituent member of the electrode structure and a sandwiching member for sandwiching the constituent member in the thickness direction, which is a method for manufacturing a large number of laminated electrode structures. Includes a step (B) of laminating the members so that the thickness direction of the constituent members is the laminating direction while positioning the laminating members, and a step (C) of removing the sandwiching member from the laminated members. The laminating member is provided on the surface side of at least one of the first electrode or the second electrode whose both ends are sandwiched by the sandwiching member, and the electrode between the sandwiching members. In the step (B), the positioning is performed by using the sandwiching member, which includes a laminated body which is bonded to the surface of the surface and has separators whose both ends face the electrodes via the sandwiching member. It is a feature. In this way, if positioning is performed using the sandwiching member that sandwiches the constituent member in the thickness direction, it is possible to suppress the occurrence of chipping in the electrode mixture layer of the electrode and to prevent foreign matter from entering the secondary battery. Can be reduced. Further, if the laminating member including the laminated body is laminated, the electrode structure can be efficiently manufactured as compared with the case where the electrode and the separator are individually positioned and laminated.

ここで、本発明の電極構造体の製造方法は、前記工程（Ａ）で準備する前記積層用部材が、前記挟持部材で両端部を挟持された前記第二電極と、前記第二電極の一方の表面側に設けられ、前記挟持部材間で前記第二電極の一方の表面に貼り合わされると共に両端部が前記挟持部材を介して前記第二電極に対向するセパレータと、前記第二電極の他方の表面側に設けられ、前記挟持部材間で前記第二電極の他方の表面に貼り合わされると共に両端部が前記挟持部材を介して前記第二電極に対向するセパレータと、前記第二電極の一方の表面側に設けられた前記セパレータの前記第二電極に貼り合わされた面とは反対側の面に貼り合わされた第一電極とを備える積層体であることが好ましい。積層用部材が上述した構成の積層体であれば、電極構造体を更に効率的に製造することができる。 Here, in the method for manufacturing the electrode structure of the present invention, the laminating member prepared in the step (A) is one of the second electrode and the second electrode whose both ends are sandwiched between the sandwiching members. A separator having both ends facing the second electrode via the sandwiching member and a separator having both ends bonded to one surface of the second electrode between the sandwiching members and the other of the second electrode. A separator having both ends facing the second electrode via the holding member and one of the second electrodes, which are provided on the surface side of the holding member and are bonded to the other surface of the second electrode between the holding members. It is preferable that the laminate is provided with a first electrode bonded to a surface opposite to the surface bonded to the second electrode of the separator provided on the surface side of the above. If the laminating member is a laminated body having the above-mentioned structure, the electrode structure can be manufactured more efficiently.

また、本発明の電極構造体の製造方法は、前記工程（Ｂ）では、前記挟持部材と係合するガイド部材を用いて前記積層用部材を位置決めおよび積層することが好ましい。挟持部材と係合するガイド部材を用いて位置決めおよび積層を行えば、電極構造体を更に効率的に製造することができる。 Further, in the method for manufacturing an electrode structure of the present invention, in the step (B), it is preferable to position and laminate the laminating member by using a guide member that engages with the sandwiching member. The electrode structure can be manufactured more efficiently by performing positioning and laminating using a guide member that engages with the sandwiching member.

そして、本発明の電極構造体の製造方法は、前記工程（Ａ）が、前記積層体を形成する工程（ａ１）を含み、前記工程（ａ１）では、長尺の電極原反と、前記電極原反の一方の表面上に電極原反の長手方向に互いに離隔させて配置された複数の第一部材と、前記電極原反の他方の表面上の前記第一部材に対向する位置に配置された複数の第二部材と、前記電極原反の少なくとも一方の表面側に位置して前記第一部材間および／または前記第二部材間で前記電極原反に貼り合わされている長尺のセパレータ原反とを備える貼り合わせ体を、前記第一部材および前記第二部材が配置されている位置で切断して前記積層体を形成することが好ましい。上述した構成を有する貼り合わせ体を第一部材および第二部材が配置されている位置で切断すれば、積層体を容易に形成し、電極構造体を更に効率的に製造することができる。 In the method for producing an electrode structure of the present invention, the step (A) includes a step (a1) of forming the laminated body, and in the step (a1), a long electrode raw fabric and the electrode are used. A plurality of first members arranged on one surface of the original fabric separated from each other in the longitudinal direction of the electrode original fabric, and arranged at positions facing the first member on the other surface of the electrode original fabric. A long separator element that is located on the surface side of at least one of the electrode material and is bonded to the electrode material between the first member and / or the second member. It is preferable to cut the laminated body provided with the cloth at the position where the first member and the second member are arranged to form the laminated body. If the laminated body having the above-described structure is cut at the position where the first member and the second member are arranged, the laminated body can be easily formed and the electrode structure can be manufactured more efficiently.

ここで、前記工程（ａ１）は、前記セパレータ原反と前記電極原反とを前記第一部材および／または前記第二部材を介在させた状態で接合させ、前記セパレータ原反と前記電極原反とを貼り合わせて前記貼り合わせ体を得る工程（ａ１１）を含むことが好ましい。セパレータ原反と電極原反とを第一部材および／または第二部材を介在させた状態で接合させれば、簡素な設備で貼り合わせ体を容易に得ることができる。 Here, in the step (a1), the separator raw fabric and the electrode raw fabric are joined with the first member and / or the second member interposed therebetween, and the separator raw fabric and the electrode raw fabric are joined. It is preferable to include a step (a11) of laminating and to obtain the bonded body. If the separator raw fabric and the electrode raw fabric are joined with the first member and / or the second member interposed therebetween, a bonded body can be easily obtained with simple equipment.

また、本発明の電極構造体の製造方法は、前記第一部材および前記第二部材が、電極原反の長手方向に微小な隙間を空けて配置された一対の分割部材よりなり、前記貼り合わせ体を、前記微小な隙間が設けられた位置で切断することが好ましい。分割部材よりなる第一部材および第二部材を使用し、且つ、切断位置を微小な隙間が設けられた位置とすれば、貼り合わせ体を容易に切断することができる。 Further, in the method for manufacturing an electrode structure of the present invention, the first member and the second member are composed of a pair of divided members arranged with a minute gap in the longitudinal direction of the electrode raw fabric, and the first member and the second member are bonded together. It is preferable to cut the body at a position where the minute gap is provided. If the first member and the second member made of the dividing members are used and the cutting position is set to a position where a minute gap is provided, the bonded body can be easily cut.

そして、本発明の電極構造体の製造方法は、前記挟持部材が、前記構成部材に対して非接着性の部材よりなることが好ましい。挟持部材が構成部材に対して非接着性であれば、工程（Ｃ）において挟持部材を積層用部材から容易に除去することができる。
なお、本発明において、「非接着性」とは、ＪＩＳ Ｚ０２３７に準拠して測定したピール強度の大きさが４Ｎ／ｃｍ以下であることを指す。そして、挟持部材の構成部材に対するピール強度は、２Ｎ／ｃｍ以下であることが好ましく、１Ｎ／ｃｍ以下であることがより好ましい。Then, in the method for manufacturing an electrode structure of the present invention, it is preferable that the sandwiching member is made of a member that is non-adhesive to the constituent member. If the sandwiching member is non-adhesive to the constituent members, the sandwiching member can be easily removed from the laminating member in the step (C).
In the present invention, "non-adhesiveness" means that the magnitude of peel strength measured in accordance with JIS Z0237 is 4 N / cm or less. The peel strength of the sandwiching member with respect to the constituent members is preferably 2 N / cm or less, and more preferably 1 N / cm or less.

本発明によれば、異物混入の原因となる虞が低減された電極構造体を効率的に製造することができる。 According to the present invention, it is possible to efficiently manufacture an electrode structure in which the risk of causing foreign matter to be mixed is reduced.

電極構造体の製造方法の一例を示す説明図である。It is explanatory drawing which shows an example of the manufacturing method of the electrode structure. 図１に示す製造方法において用いた積層用部材の正面図である。It is a front view of the stacking member used in the manufacturing method shown in FIG. （ａ）〜（ｅ）は、電極構造体の製造に使用し得る積層用部材の変形例を示す正面図である。(A) to (e) are front views which show the modification of the laminating member which can be used for manufacturing an electrode structure. （ａ）および（ｂ）は、貼り合わせ体の作製方法の変形例を示す説明図である。(A) and (b) are explanatory views which show the modification of the method of manufacturing a bonded body. 積層用部材の作製方法の変形例を示す説明図である。It is explanatory drawing which shows the modification of the manufacturing method of the stacking member. （ａ）〜（ｃ）は、積層用部材の位置決め方法の変形例を示す説明図である。(A) to (c) are explanatory views which show the modification of the positioning method of the stacking member. 電極構造体の一例の構造を示す正面図である。It is a front view which shows the structure of an example of an electrode structure.

以下、図面を参照しつつ、本発明の電極構造体の製造方法について説明する。なお、各図面においては、理解を容易にするため、一部の部材の寸法を拡大または縮小して示している。
ここで、本発明の電極構造体の製造方法は、第一電極と、セパレータと、第二電極と、セパレータとがこの順で多数積層されてなる電極構造体を製造する際に用いられる。そして、本発明の電極構造体の製造方法を用いて製造された電極構造体は、積層型二次電池を製造する際に好適に用いることができる。Hereinafter, the method for manufacturing the electrode structure of the present invention will be described with reference to the drawings. In each drawing, the dimensions of some members are enlarged or reduced for easy understanding.
Here, the method for manufacturing an electrode structure of the present invention is used when manufacturing an electrode structure in which a large number of first electrodes, separators, second electrodes, and separators are laminated in this order. Then, the electrode structure manufactured by using the method for manufacturing the electrode structure of the present invention can be suitably used when manufacturing a laminated secondary battery.

（電極構造体の製造方法）
本発明の電極構造体の製造方法では、例えば図１に示すような製造装置１００を使用し、例えば図７に示すような電極構造体２００を製造することができる。(Manufacturing method of electrode structure)
In the method for manufacturing an electrode structure of the present invention, for example, the manufacturing apparatus 100 as shown in FIG. 1 can be used to manufacture the electrode structure 200 as shown in FIG. 7, for example.

＜電極構造体＞
ここで、図７に示す電極構造体２００は、図７の上側から下側に向かって、第一電極としての正極４０と、第一セパレータ３０と、第二電極としての負極２０と、第二セパレータ１０とがこの順で多数積層された構造を有している。そして、負極２０は、負極用集電体２１の両面に負極活物質を含む負極合材層２２，２３が形成された構造を有している。また、正極４０は、正極用集電体４１の両面に正極活物質を含む正極合材層４２，４３が形成された構造を有している。更に、電極構造体２００では、短絡防止等の安全性の観点から、セパレータ１０，３０が負極２０および正極４０よりも大きい寸法を有している。また、電極構造体２００では、二次電池の安全性を更に高める観点から、負極２０が正極４０よりも大きい寸法を有している。<Electrode structure>
Here, the electrode structure 200 shown in FIG. 7 has a positive electrode 40 as a first electrode, a first separator 30, a negative electrode 20 as a second electrode, and a second electrode from the upper side to the lower side of FIG. It has a structure in which a large number of separators 10 are laminated in this order. The negative electrode 20 has a structure in which the negative electrode mixture layers 22 and 23 containing the negative electrode active material are formed on both sides of the negative electrode current collector 21. Further, the positive electrode 40 has a structure in which positive electrode mixture layers 42 and 43 containing a positive electrode active material are formed on both sides of a positive electrode current collector 41. Further, in the electrode structure 200, the separators 10 and 30 have dimensions larger than those of the negative electrode 20 and the positive electrode 40 from the viewpoint of safety such as prevention of short circuit. Further, in the electrode structure 200, the negative electrode 20 has a larger size than the positive electrode 40 from the viewpoint of further enhancing the safety of the secondary battery.

なお、本発明の製造方法を用いて製造される電極構造体の構造は、図７に示す例に限定されるものではない。具体的には、電極構造体は、第一電極としての負極と、第一セパレータと、第二電極としての正極と、第二セパレータとがこの順で多数積層された構造であってもよい。 The structure of the electrode structure manufactured by using the manufacturing method of the present invention is not limited to the example shown in FIG. Specifically, the electrode structure may have a structure in which a large number of a negative electrode as a first electrode, a first separator, a positive electrode as a second electrode, and a second separator are laminated in this order.

＜電極構造体の製造方法の一例＞
そして、本発明の製造方法の一例では、図１に示す製造装置１００を使用し、第二セパレータ１０、負極２０、第一セパレータ３０および正極４０を貼り合わせてなる積層単位を電極構造体の構成部材として積層することにより、電極構造体２００が製造される。<Example of manufacturing method of electrode structure>
Then, in an example of the manufacturing method of the present invention, the manufacturing apparatus 100 shown in FIG. 1 is used, and the laminated unit formed by laminating the second separator 10, the negative electrode 20, the first separator 30 and the positive electrode 40 is configured as an electrode structure. The electrode structure 200 is manufactured by laminating as a member.

具体的には、本発明の製造方法の一例では、図２に示すような、第二セパレータ１０、負極２０、第一セパレータ３０および正極４０を貼り合わせてなる積層単位（電極構造体の構成部材）を挟持部材５１ａ，５１ｂ，５２ａ，５２ｂで厚み方向に挟持してなる積層用部材３００を準備した後（工程（Ａ））、積層用部材３００を位置決めしつつ積層し（工程（Ｂ））、最後に挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを除去することにより（工程（Ｃ））、電極構造体２００を製造する。 Specifically, in an example of the manufacturing method of the present invention, as shown in FIG. 2, a laminated unit (constituent member of an electrode structure) formed by laminating a second separator 10, a negative electrode 20, a first separator 30 and a positive electrode 40. ) Is sandwiched between the sandwiching members 51a, 51b, 52a, 52b in the thickness direction to prepare the laminating member 300 (step (A)), and then the laminating member 300 is laminated while being positioned (step (B)). Finally, the electrode structure 200 is manufactured by removing the sandwiching members 51a, 51b, 52a, and 52b (step (C)).

［工程（Ａ）］
工程（Ａ）では、図２に示すような、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂで両端部を挟持された負極２０と、負極２０の一方の表面側（図示例では上側）に設けられ、挟持部材５１ａ，５１ｂ間で負極２０の一方の表面に貼り合わされると共に両端部が挟持部材５１ａ，５１ｂを介して負極２０に対向する第一セパレータ３０と、負極２０の他方の表面側（図示例では下側）に設けられ、挟持部材５２ａ，５２ｂ間で負極２０の他方の表面に貼り合わされると共に両端部が挟持部材５２ａ，５２ｂを介して負極２０に対向する第二セパレータ１０と、負極２０の一方の表面側に設けられた第一セパレータ３０の負極２０に貼り合わされた面とは反対側（図示例では上側）の面に貼り合わされた正極４０とを備える積層体からなる積層用部材３００を準備する。[Step (A)]
In the step (A), as shown in FIG. 2, the negative electrode 20 whose both ends are sandwiched by the sandwiching members 51a, 51b, 52a, 52b and the negative electrode 20 are provided on one surface side (upper side in the illustrated example). The first separator 30 is bonded to one surface of the negative electrode 20 between the sandwiching members 51a and 51b, and both ends face the negative electrode 20 via the sandwiching members 51a and 51b, and the other surface side of the negative electrode 20 (illustrated example). The second separator 10 and the negative electrode 20 are provided on the lower side) and are bonded to the other surface of the negative electrode 20 between the sandwiching members 52a and 52b, and both ends face the negative electrode 20 via the sandwiching members 52a and 52b. A laminating member 300 made of a laminated body including a positive electrode 40 bonded to a surface opposite to the surface bonded to the negative electrode 20 of the first separator 30 provided on one surface side (upper side in the illustrated example). Prepare.

具体的には、図１に示すように、工程（Ａ）では、長尺の電極原反としての負極原反２０Ａと、負極原反２０Ａの一方（図１では上方）の表面上に負極原反２０Ａの長手方向（図１では左右方向）に互いに離隔させて配置された複数の第一部材５１と、負極原反２０Ａの他方（図１では下方）の表面上の第一部材５１に対向する位置に配置された複数の第二部材５２と、負極原反２０Ａの上方の表面側に位置して第一部材５１間で負極原反２０Ａに貼り合わされている長尺の第一セパレータ原反３０Ａと、負極原反２０Ａの下方の表面側に位置して第二部材５２間で負極原反２０Ａに貼り合わされている長尺の第二セパレータ原反１０Ａと、負極原反２０Ａの長手方向に隣り合う第一部材５１間で第一セパレータ原反３０Ａの負極原反２０Ａに貼り合わされた面とは反対側の面に貼り合わされた正極４０とを備える貼り合わせ体を、第一部材５１および第二部材５２が配置されている位置で切断して、積層用部材３００を得る（工程（ａ１））。 Specifically, as shown in FIG. 1, in the step (A), the negative electrode raw material 20A as a long electrode raw material and the negative electrode raw material 20A on the surface of one of the negative electrode raw materials 20A (upper in FIG. 1). A plurality of first members 51 arranged apart from each other in the longitudinal direction of the anti-20A (left-right direction in FIG. 1) and the first member 51 on the surface of the other (lower in FIG. 1) of the negative electrode original fabric 20A are opposed to each other. The long first separator raw fabric, which is located on the surface side above the negative electrode raw fabric 20A and is bonded to the negative electrode raw fabric 20A between the plurality of second members 52 arranged at the positions to be used. 30A, a long second separator raw fabric 10A located on the lower surface side of the negative electrode raw fabric 20A and bonded to the negative electrode raw fabric 20A between the second members 52, and the negative electrode raw fabric 20A in the longitudinal direction. A bonded body including a positive electrode 40 bonded to a surface opposite to the surface bonded to the negative electrode raw fabric 20A of the first separator raw fabric 30A between adjacent first members 51 is provided with the first member 51 and the first member 51. The stacking member 300 is obtained by cutting at the position where the two members 52 are arranged (step (a1)).

なお、第一部材５１および第二部材５２は、長さが、負極原反２０Ａ、第一セパレータ原反３０Ａおよび第二セパレータ原反１０Ａの幅よりも長い。また、図１に示す第一部材５１は、負極原反２０Ａの長手方向に微小な隙間を空けて配置された一対の分割部材５１ａ，５１ｂよりなる。更に、第二部材５２は、負極原反２０Ａの長手方向に微小な隙間を空けて配置された一対の分割部材５２ａ，５２ｂよりなる。そして、図１では、貼り合わせ体が、上記微小な隙間が設けられた位置で切断され、得られた積層用部材３００では、第一部材５１および第二部材５２を構成していた分割部材５１ａ，５１ｂ，５２ａ，５２ｂが挟持部材となる。
因みに、分割部材間に設ける微小な隙間の大きさは、分割部材を切断することなく貼り合わせ体を切断することが可能な幅以上であれば特に限定されないが、通常、第一部材５１および第二部材５２の配設間隔よりも短く、例えば１ｍｍ以上５ｍｍ以下である。The length of the first member 51 and the second member 52 is longer than the width of the negative electrode original fabric 20A, the first separator original fabric 30A, and the second separator original fabric 10A. Further, the first member 51 shown in FIG. 1 is composed of a pair of split members 51a and 51b arranged with a minute gap in the longitudinal direction of the negative electrode raw fabric 20A. Further, the second member 52 is composed of a pair of split members 52a and 52b arranged with a minute gap in the longitudinal direction of the negative electrode original fabric 20A. Then, in FIG. 1, the laminated body is cut at a position where the minute gap is provided, and in the obtained laminating member 300, the split member 51a constituting the first member 51 and the second member 52. , 51b, 52a, 52b serve as holding members.
Incidentally, the size of the minute gap provided between the divided members is not particularly limited as long as it is wider than the width capable of cutting the bonded body without cutting the divided members, but is usually the first member 51 and the first member. It is shorter than the arrangement interval of the two members 52, for example, 1 mm or more and 5 mm or less.

また、上述した貼り合わせ体は、第一セパレータ原反３０Ａおよび第二セパレータ原反１０Ａと、負極原反２０Ａとを、第一部材５１および第二部材５２を介在させた状態で接合させ、第一セパレータ原反３０Ａおよび第二セパレータ原反１０Ａと負極原反２０Ａとを貼り合わせ、その後、予め所定の長さに切断しておいた正極４０を第一セパレータ原反３０Ａの負極原反２０Ａに貼り合わされた面とは反対側の面に貼り合わせることにより作製することができる（工程（ａ１１））。 Further, in the above-mentioned bonded body, the first separator raw fabric 30A, the second separator raw fabric 10A, and the negative electrode raw fabric 20A are joined in a state where the first member 51 and the second member 52 are interposed, and the first member is joined. One separator raw fabric 30A, the second separator raw fabric 10A, and the negative electrode raw fabric 20A are bonded together, and then the positive electrode 40 which has been cut to a predetermined length in advance is used as the negative electrode raw fabric 20A of the first separator raw fabric 30A. It can be manufactured by bonding to a surface opposite to the bonded surface (step (a11)).

具体的には、図１に示すように、貼り合わせ体は、上部ローラ６１および下部ローラ６２よりなる圧着ローラ６０を使用し、第一セパレータロール３０Ｒから繰り出された長尺の第一セパレータ原反３０Ａと、第二セパレータロール１０Ｒから繰り出された長尺の第二セパレータ原反１０Ａとを、負極ロール２０Ｒから繰り出されて第一部材５１および第二部材５２が上面および下面に配置された負極原反２０Ａに貼り合わせた後、圧着ローラ７０を用いて正極４０を第一セパレータ原反３０Ａの上面に貼り合わせることにより、作製することができる。 Specifically, as shown in FIG. 1, the bonded body uses a crimping roller 60 composed of an upper roller 61 and a lower roller 62, and is a long first separator raw fabric unwound from the first separator roll 30R. 30A and the long second separator original fabric 10A unwound from the second separator roll 10R are unwound from the negative electrode roll 20R, and the first member 51 and the second member 52 are arranged on the upper surface and the lower surface. It can be manufactured by laminating the positive electrode 40 on the upper surface of the first separator original fabric 30A using a crimping roller 70 after laminating to the anti-20A.

なお、貼り合わせ体の作製時に、第一部材５１に対して第一セパレータ原反３０Ａを良好に追従させる観点、および、第二部材５２に対して第二セパレータ原反１０Ａを良好に追従させる観点からは、上部ローラ６１および下部ローラ６２としては、第一部材５１および第二部材５２よりも弾性率が小さい部材よりなるローラを用いることが好ましい。 From the viewpoint of making the first separator original fabric 30A follow the first member 51 well and the viewpoint of making the second separator original fabric 10A follow the second member 52 well at the time of manufacturing the bonded body. Therefore, as the upper roller 61 and the lower roller 62, it is preferable to use a roller made of a member having a lower elastic modulus than the first member 51 and the second member 52.

また、第一セパレータ原反３０Ａの上面への正極４０の貼り合わせは、正極４０の位置決めを容易にする観点から、第一部材５１および第二部材５２をガイドとして利用して行うことが好ましい。 Further, the positive electrode 40 is preferably bonded to the upper surface of the first separator raw fabric 30A by using the first member 51 and the second member 52 as guides from the viewpoint of facilitating the positioning of the positive electrode 40.

そして、貼り合わせ体の切断は、レーザーＬを用いたレーザー切断機８０などの既知の切断機を用いて、第一部材５１および第二部材５２が配置されている位置、より具体的には分割部材５１ａ，５１ｂおよび分割部材５２ａ，５２ｂの間の微小な空間が存在する位置で、第一セパレータ原反３０Ａ、負極原反２０Ａおよび第二セパレータ原反１０Ａを切断することにより行う。このように、微小な空間が存在する位置で貼り合わせ体を切断すれば、第一部材５１および第二部材５２を切断する必要が無いので、切断する部材の数を少なくし、貼り合わせ体を容易に切断することができる。 Then, the bonded body is cut by using a known cutting machine such as a laser cutting machine 80 using a laser L at a position where the first member 51 and the second member 52 are arranged, more specifically, by dividing the bonded body. This is performed by cutting the first separator raw fabric 30A, the negative electrode raw fabric 20A, and the second separator raw fabric 10A at a position where a minute space exists between the members 51a and 51b and the dividing members 52a and 52b. In this way, if the bonded body is cut at a position where a minute space exists, it is not necessary to cut the first member 51 and the second member 52. Therefore, the number of members to be cut is reduced, and the bonded body is formed. It can be easily cut.

［工程（Ｂ）］
次に、工程（Ｂ）では、工程（Ａ）で得られた積層用部材３００を、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを利用して位置決めしつつ、第二セパレータ１０、負極２０、第一セパレータ３０および正極４０を貼り合わせてなる積層単位（電極構造体の構成部材）の厚み方向が積層方向となるように積層する。[Step (B)]
Next, in the step (B), the laminating member 300 obtained in the step (A) is positioned by using the sandwiching members 51a, 51b, 52a, 52b, and the second separator 10, the negative electrode 20, and the first The separator 30 and the positive electrode 40 are laminated so that the thickness direction of the laminating unit (constituent member of the electrode structure) formed by laminating is the laminating direction.

具体的には、工程（Ｂ）では、図１に示すように、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂと係合するガイド部材９０を用いて積層用部材３００を効率的に位置決めおよび積層する。 Specifically, in the step (B), as shown in FIG. 1, the laminating member 300 is efficiently positioned and laminated by using the guide member 90 that engages with the sandwiching members 51a, 51b, 52a, 52b.

ここで、ガイド部材９０は、積層方向に延在する柱状部材９１，９２，９３，９４よりなる。具体的には、ガイド部材９０は、負極２０の一端部を挟持する挟持部材５１ｂ，５２ｂの幅と略等しい間隔を開けて配置された柱状部材９１，９２と、負極２０の他端部を挟持する挟持部材５１ａ，５２ａの幅と略等しい間隔を開けて配置された柱状部材９３，９４とを備えている。 Here, the guide member 90 is composed of columnar members 91, 92, 93, 94 extending in the stacking direction. Specifically, the guide member 90 sandwiches the columnar members 91 and 92 arranged at intervals substantially equal to the width of the sandwiching members 51b and 52b that sandwich one end of the negative electrode 20, and the other end of the negative electrode 20. It includes columnar members 93 and 94 arranged at intervals substantially equal to the widths of the sandwiching members 51a and 52a.

そして、工程（Ｂ）では、例えばリニアガイド、ボールねじ、当該ボールねじを回すモーターを有するステージ、および、当該ステージを動かすリニアサーボモータを有する移動装置（図示せず）等を使用し、挟持部材５１ｂ，５２ｂが柱状部材９１，９２の間に入り、挟持部材５１ａ，５２ａが柱状部材９３，９４の間に入るようにして積層用部材３００を図１では下方に移動させることにより、積層用部材３００を位置決めしつつ積層することができる。 Then, in the step (B), for example, a linear guide, a ball screw, a stage having a motor for turning the ball screw, a moving device (not shown) having a linear servomotor for moving the stage, and the like are used, and a holding member is used. The laminating member 300 is moved downward in FIG. 1 so that the 51b and 52b are inserted between the columnar members 91 and 92 and the sandwiching members 51a and 52a are inserted between the columnar members 93 and 94. The 300 can be laminated while being positioned.

［工程（Ｃ）］
最後に、工程（Ｃ）では、積層された積層用部材３００から挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを除去して、極構造体２００を得る。[Step (C)]
Finally, in the step (C), the sandwiching members 51a, 51b, 52a, 52b are removed from the laminated laminating member 300 to obtain the polar structure 200.

ここで、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを除去する方法は、特に限定されない。
例えば、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂが積層単位（電極構造体の構成部材）に対して非接着性の部材よりなる場合には、図１に示すように、移動装置（図示せず）等を使用して挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを引き抜くことにより、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを除去することができる。
また、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂが、溶解、融解または昇華可能な材料から形成されている場合には、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを適当な溶媒で溶解し、或いは、融解または昇華させることにより、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを除去することができる。
更に、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂの表層部が積層単位（電極構造体の構成部材）に対して接着性を有する材料で形成されている場合には、表層部を融解、昇華または溶媒を用いた溶解などの方法を用いて除去した後、移動装置（図示せず）等を使用して表層部が除去された挟持部材を引き抜くことにより、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを除去することができる。
上述した中でも、製造装置の簡素化および作業の簡便化の観点からは、挟持部材を電極構造体の構成部材に対して非接着性の部材とし、移動装置（図示せず）等を使用して挟持部材を引き抜くことにより、挟持部材を除去することが好ましい。Here, the method for removing the sandwiching members 51a, 51b, 52a, 52b is not particularly limited.
For example, when the sandwiching members 51a, 51b, 52a, 52b are made of non-adhesive members with respect to the laminated unit (constituent member of the electrode structure), as shown in FIG. 1, a moving device (not shown). By pulling out the sandwiching members 51a, 51b, 52a, 52b using the above, the sandwiching members 51a, 51b, 52a, 52b can be removed.
When the sandwiching members 51a, 51b, 52a, 52b are made of a material capable of dissolving, melting or sublimating, the sandwiching members 51a, 51b, 52a, 52b are dissolved or melted with an appropriate solvent. Alternatively, the sandwiching members 51a, 51b, 52a, 52b can be removed by sublimation.
Further, when the surface layer portion of the sandwiching members 51a, 51b, 52a, 52b is formed of a material having adhesiveness to the laminated unit (constituent member of the electrode structure), the surface layer portion is melted, sublimated or solvent. After removing by a method such as dissolution using, the holding members 51a, 51b, 52a, 52b are removed by pulling out the holding member from which the surface layer portion has been removed using a moving device (not shown) or the like. can do.
Among the above, from the viewpoint of simplification of the manufacturing apparatus and simplification of the work, the sandwiching member is a non-adhesive member to the constituent members of the electrode structure, and a moving device (not shown) or the like is used. It is preferable to remove the sandwiching member by pulling out the sandwiching member.

そして、上述したように、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを利用して位置決めしつつ積層用部材３００を積層した後に挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを除去すれば、壁面等に積層用部材３００を当接させて整列させる必要が無いので、電極の電極合材層に欠け等が生じるのを防止し、二次電池中への異物混入が起こる虞を低減することができる。 Then, as described above, if the sandwiching members 51a, 51b, 52a, 52b are removed after laminating the laminating member 300 while positioning using the sandwiching members 51a, 51b, 52a, 52b, the sandwiching members 51a, 51b, 52a, 52b can be laminated on a wall surface or the like. Since it is not necessary to bring the members 300 into contact with each other and align them, it is possible to prevent the electrode mixture layer of the electrodes from being chipped or the like, and to reduce the possibility that foreign matter is mixed into the secondary battery.

また、上述した一例では、第一セパレータ原反３０Ａおよび第二セパレータ原反１０Ａと、負極原反２０Ａとを、第一部材５１および第二部材５２を介在させた状態で貼り合わせた貼り合わせ体を、第一部材５１および第二部材５２が配置されている位置で切断して積層用部材３００を作製しているので、セパレータ１０，３０の大きさが負極２０および正極４０よりも大きい積層単位（電極構造体の構成部材）および電極構造体２００を連続して容易に製造することができる。 Further, in the above-mentioned example, a bonded body in which the first separator raw fabric 30A, the second separator raw fabric 10A, and the negative electrode raw fabric 20A are bonded together with the first member 51 and the second member 52 interposed therebetween. The first member 51 and the second member 52 are cut at the positions where the first member 51 and the second member 52 are arranged to produce the laminating member 300. Therefore, the laminating units in which the sizes of the separators 10 and 30 are larger than the negative electrode 20 and the positive electrode 40. (Constituent members of the electrode structure) and the electrode structure 200 can be continuously and easily manufactured.

以上、一例を用いて本発明の電極構造体の製造方法について説明したが、本発明の電極構造体の製造方法は上述した一例に限定されるものではない。 Although the method for producing the electrode structure of the present invention has been described above using an example, the method for producing the electrode structure of the present invention is not limited to the above-mentioned example.

具体的には、例えば、本発明の電極構造体の製造方法では、図３（ａ）〜（ｅ）に示すような積層用部材を積層して電極構造体を形成してもよい。
図２に示すような積層用部材および図３（ａ）〜（ｅ）に示すような積層用部材は、挟持部材で両端部を挟持された電極と、電極の少なくとも一方の表面側に設けられ、挟持部材間で電極の表面に貼り合わされると共に両端部が挟持部材を介して電極に対向するセパレータとを備える積層体を含んでいるので、電極やセパレータを個別に挟持して積層する場合と比較し、効率的に電極構造体を形成することができる。Specifically, for example, in the method for manufacturing an electrode structure of the present invention, the laminating members as shown in FIGS. 3A to 3E may be laminated to form the electrode structure.
The laminating member as shown in FIG. 2 and the laminating member as shown in FIGS. 3 (a) to 3 (e) are provided on the electrode whose both ends are sandwiched by the sandwiching member and on the surface side of at least one of the electrodes. Since it includes a laminated body in which the sandwiching members are bonded to the surface of the electrode and both ends are provided with a separator facing the electrode via the sandwiching member, the electrode and the separator are individually sandwiched and laminated. By comparison, the electrode structure can be formed efficiently.

ここで、図３（ａ）に示す積層用部材３００Ａおよび３００Ａ’は、交互に積層して電極構造体２００を製造する際に用いられる。そして、積層用部材３００Ａ’は、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂで両端部を挟持された負極２０と、負極２０の一方の表面側（図示例では下側）に設けられ、挟持部材５２ａ，５２ｂ間で負極２０の一方の表面に貼り合わされると共に両端部が挟持部材５２ａ，５２ｂを介して負極２０に対向する第二セパレータ１０とを備える積層体からなる。また、積層用部材３００Ａは、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂで両端部を挟持された正極４０と、正極４０の一方の表面側（図示例では下側）に設けられ、挟持部材５２ａ，５２ｂ間で正極４０の一方の表面に貼り合わされると共に両端部が挟持部材５２ａ，５２ｂを介して正極４０に対向する第一セパレータ３０とを備える積層体からなる。
なお、積層用部材３００Ａ’は、第一セパレータ原反３０Ａを使用せず、正極４０を貼り合わせない以外は積層用部材３００と同様にして作製することができ、積層用部材３００Ａは、第二セパレータ原反１０Ａを使用せず、且つ、負極原反２０Ａに代えて長尺の正極原反を用いる以外は積層用部材３００と同様にして作製することができる。そして、積層用部材３００Ａおよび３００Ａ’の位置決めおよび積層は、積層用部材３００Ａの挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを係合させるガイド部材と、積層用部材３００Ａ’の挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを係合させるガイド部材との２つのガイド部材を用いることにより、行うことができる。Here, the laminating members 300A and 300A'shown in FIG. 3A are used when the electrode structure 200 is manufactured by alternately laminating them. The laminating member 300A'is provided on one surface side (lower side in the illustrated example) of the negative electrode 20 whose both ends are sandwiched by the sandwiching members 51a, 51b, 52a, 52b and the sandwiching member 52a. , 52b are laminated to one surface of the negative electrode 20, and both ends thereof are formed of a laminated body including a second separator 10 facing the negative electrode 20 via sandwiching members 52a and 52b. Further, the laminating member 300A is provided on one surface side (lower side in the illustrated example) of the positive electrode 40 whose both ends are sandwiched between the sandwiching members 51a, 51b, 52a and 52b, and the sandwiching member 52a, It is composed of a laminated body including a first separator 30 which is bonded to one surface of the positive electrode 40 between 52b and whose both ends face the positive electrode 40 via the holding members 52a and 52b.
The laminating member 300A'can be manufactured in the same manner as the laminating member 300 except that the first separator raw fabric 30A is not used and the positive electrode 40 is not bonded, and the laminating member 300A is the second. It can be produced in the same manner as the laminating member 300 except that the separator raw fabric 10A is not used and a long positive electrode raw fabric is used instead of the negative electrode raw fabric 20A. The positioning and laminating of the laminating members 300A and 300A'are performed by engaging the holding members 51a, 51b, 52a and 52b of the laminating member 300A with the holding members 51a, 51b and 52a of the laminating member 300A'. , 52b can be carried out by using two guide members with a guide member.

また、図３（ｂ）に示す積層用部材３００Ｂおよび３００Ｂ’は、交互に積層して電極構造体２００を製造する際に用いられる。そして、積層用部材３００Ｂは、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂで両端部を挟持された正極４０よりなる。また、積層用部材３００Ｂ’は、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂで両端部を挟持された負極２０と、負極２０の一方の表面側（図示例では上側）に設けられ、挟持部材５１ａ，５１ｂ間で負極２０の一方の表面に貼り合わされると共に両端部が挟持部材５１ａ，５１ｂを介して負極２０に対向する第一セパレータ３０と、負極２０の他方の表面側（図示例では下側）に設けられ、挟持部材５２ａ，５２ｂ間で負極２０の他方の表面に貼り合わされると共に両端部が挟持部材５２ａ，５２ｂを介して負極２０に対向する第二セパレータ１０とを備える積層体からなる。
なお、積層用部材３００Ｂは、第一部材５１および第二部材５２で挟持した正極原反を切断することにより、または、正極原反を予め切断して得た正極４０の両端部を挟持部材５１ａ，５１ｂ，５２ａ，５２ｂで挟持することにより、作製することができる。また、積層用部材３００Ｂ’は、正極４０を貼り合わせない以外は積層用部材３００と同様にして作製することができる。そして、積層用部材３００Ｂおよび３００Ｂ’の位置決めおよび積層は、積層用部材３００Ｂの挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを係合させるガイド部材と、積層用部材３００Ｂ’の挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを係合させるガイド部材との２つのガイド部材を用いることにより、行うことができる。Further, the laminating members 300B and 300B'shown in FIG. 3B are used when the electrode structure 200 is manufactured by alternately laminating. The laminating member 300B is composed of positive electrodes 40 whose both ends are sandwiched between the sandwiching members 51a, 51b, 52a, and 52b. Further, the laminating member 300B'is provided on one surface side (upper side in the illustrated example) of the negative electrode 20 whose both ends are sandwiched between the sandwiching members 51a, 51b, 52a and 52b, and the sandwiching member 51a, The first separator 30 is bonded to one surface of the negative electrode 20 between 51b and both ends face the negative electrode 20 via the sandwiching members 51a and 51b, and the other surface side of the negative electrode 20 (lower side in the illustrated example). It is composed of a laminate provided with a second separator 10 which is attached to the other surface of the negative electrode 20 between the sandwiching members 52a and 52b and whose both ends face the negative electrode 20 via the sandwiching members 52a and 52b.
The laminating member 300B holds both ends of the positive electrode 40 obtained by cutting the positive electrode raw fabric sandwiched between the first member 51 and the second member 52 or by cutting the positive electrode raw fabric in advance. , 51b, 52a, 52b, and can be manufactured. Further, the laminating member 300B'can be manufactured in the same manner as the laminating member 300 except that the positive electrode 40 is not bonded. The positioning and laminating of the laminating members 300B and 300B'are performed by engaging the holding members 51a, 51b, 52a and 52b of the laminating member 300B with the holding members 51a, 51b and 52a of the laminating member 300B'. , 52b can be carried out by using two guide members with a guide member.

更に、図３（ｃ）に示す積層用部材３００Ｃおよび３００Ｃ’は、交互に積層して、第一電極としての負極と、第一セパレータと、第二電極としての正極と、第二セパレータとがこの順で多数積層された電極構造体を製造する際に用いられる。そして、積層用部材３００Ｃは、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂで両端部を挟持された負極２０よりなる。また、積層用部材３００Ｃ’は、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂで両端部を挟持された正極４０と、正極４０の一方の表面側（図示例では上側）に設けられ、挟持部材５１ａ，５１ｂ間で正極４０の一方の表面に貼り合わされると共に両端部が挟持部材５１ａ，５１ｂを介して正極４０に対向する第一セパレータ３０と、正極４０の他方の表面側（図示例では下側）に設けられ、挟持部材５２ａ，５２ｂ間で正極４０の他方の表面に貼り合わされると共に両端部が挟持部材５２ａ，５２ｂを介して正極４０に対向する第二セパレータ１０とを備える積層体からなる。
なお、積層用部材３００Ｃは、第一部材５１および第二部材５２で挟持した負極原反２０Ａを切断することにより、または、負極原反２０Ａを予め切断して得た負極２０の両端部を挟持部材５１ａ，５１ｂ，５２ａ，５２ｂで挟持することにより、作製することができる。また、積層用部材３００Ｃ’は、負極原反２０Ａに替えて正極原反を用いる以外は積層用部材３００Ｂ’と同様にして作製することができる。そして、積層用部材３００Ｃおよび３００Ｃ’の位置決めおよび積層は、積層用部材３００Ｃの挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを係合させるガイド部材と、積層用部材３００Ｃ’の挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを係合させるガイド部材との２つのガイド部材を用いることにより、行うことができる。Further, the laminating members 300C and 300C'shown in FIG. 3C are alternately laminated to form a negative electrode as a first electrode, a first separator, a positive electrode as a second electrode, and a second separator. It is used when manufacturing an electrode structure in which a large number of electrodes are laminated in this order. The laminating member 300C is composed of a negative electrode 20 whose both ends are sandwiched between the sandwiching members 51a, 51b, 52a, and 52b. Further, the laminating member 300C'is provided on one surface side (upper side in the illustrated example) of the positive electrode 40 whose both ends are sandwiched by the sandwiching members 51a, 51b, 52a and 52b, and the sandwiching member 51a, The first separator 30 is bonded to one surface of the positive electrode 40 between 51b and both ends face the positive electrode 40 via the sandwiching members 51a and 51b, and the other surface side of the positive electrode 40 (lower side in the illustrated example). It is composed of a laminate provided with a second separator 10 which is attached to the other surface of the positive electrode 40 between the sandwiching members 52a and 52b and whose both ends face the positive electrode 40 via the sandwiching members 52a and 52b.
The laminating member 300C sandwiches both ends of the negative electrode 20 obtained by cutting the negative electrode raw fabric 20A sandwiched between the first member 51 and the second member 52, or by cutting the negative electrode raw fabric 20A in advance. It can be manufactured by sandwiching it between the members 51a, 51b, 52a, 52b. Further, the laminating member 300C'can be produced in the same manner as the laminating member 300B' except that the positive electrode raw fabric is used instead of the negative electrode raw fabric 20A. The positioning and laminating of the laminating members 300C and 300C'are performed by engaging the holding members 51a, 51b, 52a and 52b of the laminating member 300C with the holding members 51a, 51b and 52a of the laminating member 300C'. , 52b can be carried out by using two guide members with a guide member.

また、図３（ｄ）に示す積層用部材３００Ｄ、３００Ｄ’および３００Ｄ”は、順次積層して電極構造体２００を製造する際に用いられる。そして、積層用部材３００Ｄは、積層用部材３００Ａと同様の構成を有しており、積層用部材３００Ａと同様にして作製することができる。また、積層用部材３００Ｄ’は、積層用部材３００Ｃと同様の構成を有しており、積層用部材３００Ｃと同様にして作製することができる。更に、積層用部材３００Ｄ”は、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂで両端部を挟持された第二セパレータ１０よりなり、第一部材５１および第二部材５２で挟持した第二セパレータ原反１０Ａを切断することにより、または、第二セパレータ原反１０Ａを予め切断して得た第二セパレータ１０の両端部を挟持部材５１ａ，５１ｂ，５２ａ，５２ｂで挟持することにより、作製することができる。そして、積層用部材３００Ｄ、積層用部材３００Ｄ’および積層用部材３００Ｄ”の位置決めおよび積層は、積層用部材３００Ｄの挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを係合させるガイド部材と、積層用部材３００Ｄ’の挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを係合させるガイド部材と、積層用部材３００Ｄ”の挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを係合させるガイド部材との３つのガイド部材を用いることにより、行うことができる。 Further, the laminating members 300D, 300D'and 300D "shown in FIG. 3D are used when sequentially laminating to manufacture the electrode structure 200, and the laminating member 300D is used with the laminating member 300A. It has the same configuration and can be manufactured in the same manner as the laminating member 300A. Further, the laminating member 300D'has the same configuration as the laminating member 300C and has the same configuration as the laminating member 300C. Further, the laminating member 300D "consists of the second separator 10 whose both ends are sandwiched between the sandwiching members 51a, 51b, 52a and 52b, and the first member 51 and the second member. Both ends of the second separator 10 obtained by cutting the second separator original fabric 10A sandwiched by 52 or by cutting the second separator original fabric 10A in advance are sandwiched by the sandwiching members 51a, 51b, 52a, 52b. By doing so, it can be produced. Then, the positioning and laminating of the laminating member 300D, the laminating member 300D'and the laminating member 300D' are performed by engaging the holding members 51a, 51b, 52a, 52b of the laminating member 300D with the guiding member and the laminating member 300D. By using three guide members, a guide member for engaging the sandwiching members 51a, 51b, 52a, 52b of', and a guide member for engaging the sandwiching members 51a, 51b, 52a, 52b of the laminating member 300D'. ,It can be carried out.

また、図３（ｅ）に示す積層用部材３００Ｅ、３００Ｅ’および３００Ｅ”は、順次積層して電極構造体２００を製造する際に用いられる。そして、積層用部材３００Ｅは、積層用部材３００Ｂと同様の構成を有しており、積層用部材３００Ｂと同様にして作製することができる。また、積層用部材３００Ｅ’は、挟持部材５１ａ，５１ｂ，５２ａ，５２ｂで両端部を挟持された第一セパレータ３０よりなり、第一部材５１および第二部材５２で挟持した第一セパレータ原反３０Ａを切断することにより、または、第一セパレータ原反３０Ａを予め切断して得た第一セパレータ３０の両端部を挟持部材５１ａ，５１ｂ，５２ａ，５２ｂで挟持することにより、作製することができる。更に、積層用部材３００Ｅ”は、積層用部材３００Ａ’と同様の構成を有しており、積層用部材３００Ａ’と同様にして作製することができる。そして、積層用部材３００Ｅ、積層用部材３００Ｅ’および積層用部材３００Ｅ”の位置決めおよび積層は、積層用部材３００Ｅの挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを係合させるガイド部材と、積層用部材３００Ｅ’の挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを係合させるガイド部材と、積層用部材３００Ｅ”の挟持部材５１ａ，５１ｂ，５２ａ，５２ｂを係合させるガイド部材との３つのガイド部材を用いることにより、行うことができる。 Further, the laminating members 300E, 300E'and 300E "shown in FIG. 3E are used when sequentially laminating to manufacture the electrode structure 200, and the laminating member 300E is used with the laminating member 300B. It has the same structure and can be manufactured in the same manner as the laminating member 300B. Further, the laminating member 300E'is the first whose both ends are sandwiched between the sandwiching members 51a, 51b, 52a and 52b. Both ends of the first separator 30 formed of the separator 30 and obtained by cutting the first separator raw fabric 30A sandwiched between the first member 51 and the second member 52 or by cutting the first separator raw fabric 30A in advance. It can be manufactured by sandwiching the portion between the sandwiching members 51a, 51b, 52a, 52b. Further, the laminating member 300E "has the same configuration as the laminating member 300A', and is a laminating member. It can be produced in the same manner as 300A'. Then, the positioning and laminating of the laminating member 300E, the laminating member 300E'and the laminating member 300E "are performed by engaging the holding members 51a, 51b, 52a, 52b of the laminating member 300E with the guiding member 300E. By using three guide members, a guide member for engaging the holding members 51a, 51b, 52a, 52b of', and a guide member for engaging the holding members 51a, 51b, 52a, 52b of the laminating member 300E'. ,It can be carried out.

ここで、一般にセパレータは電極と比較して柔軟で脆弱な部材よりなるので、積層用部材３００Ｄ”および積層用部材３００Ｅ’は、挟持し難く、また、貼り合わせ時にシワ等が発生し易い。そのため、本発明の電極構造体の製造方法では、上述した中でも、図２および図３（ａ）〜（ｃ）に示すような積層用部材を積層して電極構造体を形成することが好ましい。
また、正極４０は幅狭の部材よりなるところ、積層用部材３００Ａおよび積層用部材３００Ｃ’では、正極４０に貼り合わされた第一セパレータ３０や第二セパレータ１０を幅広にしようとすると、正極４０と正極４０に貼り合わされたセパレータとの間に介在させる挟持部材の高さが高くなり、積層用部材の作製時のセパレータ原反と正極原反との貼り合わせが困難になると共に、積層用部材を積層し難くなる。そのため、本発明の電極構造体の製造方法では、上述した中でも、図２および図３（ｂ）に示すような積層用部材を積層して電極構造体を形成することがより好ましい。
更に、ガイド部材を簡素化する観点からは、図２に示すような積層用部材を積層して電極構造体を形成することが更に好ましい。Here, since the separator is generally made of a member that is flexible and fragile as compared with the electrode, the laminating member 300D "and the laminating member 300E'are difficult to be sandwiched, and wrinkles and the like are likely to occur at the time of bonding. In the method for producing an electrode structure of the present invention, among the above, it is preferable to stack the laminating members as shown in FIGS. 2 and 3 (a) to 3 (c) to form the electrode structure.
Further, since the positive electrode 40 is made of a narrow member, in the laminating member 300A and the laminating member 300C', when the first separator 30 and the second separator 10 bonded to the positive electrode 40 are to be widened, the positive electrode 40 and the positive electrode 40 are used. The height of the sandwiching member interposed between the separator bonded to the positive electrode 40 becomes high, which makes it difficult to bond the separator raw fabric and the positive electrode raw fabric at the time of manufacturing the laminating member, and also makes the laminating member It becomes difficult to stack. Therefore, in the method for manufacturing the electrode structure of the present invention, it is more preferable to form the electrode structure by laminating the laminating members as shown in FIGS. 2 and 3B among the above-mentioned methods.
Further, from the viewpoint of simplifying the guide member, it is more preferable to form the electrode structure by laminating the laminating members as shown in FIG.

また、上述した製造方法の一例では、貼り合わせ体の製造時に、第一部材および第二部材の形状に追従し得る圧着ローラ６０を使用したが、電極原反およびセパレータ原反の貼り合わせ、並びに、第一部材および第二部材の設置は、例えば図４（ａ），（ｂ）に示すような装置を用いて行ってもよい。
但し、製造に使用する装置の簡素化の観点からは、図１に示すようにして電極原反およびセパレータ原反の貼り合わせ、並びに、第一部材および第二部材の設置を行うことが好ましい。Further, in an example of the above-mentioned manufacturing method, a crimping roller 60 capable of following the shapes of the first member and the second member was used at the time of manufacturing the bonded body. , The first member and the second member may be installed by using, for example, an apparatus as shown in FIGS. 4A and 4B.
However, from the viewpoint of simplification of the apparatus used for manufacturing, it is preferable to bond the electrode raw fabric and the separator raw fabric, and to install the first member and the second member as shown in FIG.

ここで、図４（ａ）に示す圧着ローラ６０Ａは、第一部材５１および第二部材５２の形状に対応した形状の凹部６３を有するサクションローラ６１Ａおよび６２Ａよりなる。そして、図４では、サクションローラ６１Ａおよび６２Ａの凹部６３でセパレータ原反１０Ａおよび３０Ａを吸引し、負極原反２０Ａとセパレータ原反１０Ａ，３０Ａとの間に形成された空間に第一部材５１および第二部材５２を配置している。なお、第一部材５１および第二部材５２は、図４（ａ）に示すように予め負極原反２０Ａ上に配置しておいてもよいし、セパレータ原反１０Ａおよび３０Ａを吸引した際に形成された空間内に挿入してもよい。 Here, the crimping roller 60A shown in FIG. 4A is composed of suction rollers 61A and 62A having recesses 63 having a shape corresponding to the shapes of the first member 51 and the second member 52. Then, in FIG. 4, the separator raw fabrics 10A and 30A are sucked by the recesses 63 of the suction rollers 61A and 62A, and the first member 51 and the first member 51 and the space formed between the negative electrode raw fabrics 20A and the separator raw fabrics 10A and 30A are formed. The second member 52 is arranged. The first member 51 and the second member 52 may be arranged in advance on the negative electrode raw fabric 20A as shown in FIG. 4A, or are formed when the separator raw fabrics 10A and 30A are sucked. It may be inserted in the space provided.

また、図４（ｂ）に示す装置では、図４（ａ）に示す装置と同様に圧着ローラ６０Ａを使用し、サクションローラ６１Ａおよび６２Ａの凹部６３でセパレータ原反１０Ａおよび３０Ａを吸引しつつ、第一部材５１および第二部材５２を配置しない状態で負極原反２０Ａとセパレータ原反１０Ａ，３０Ａとを貼り合わせた後、吸引装置６４を使用し、凹部６３で吸引した位置（負極原反２０Ａとセパレータ原反１０Ａ，３０Ａとが貼り合わされていない位置）において負極原反２０Ａとセパレータ原反１０Ａ，３０Ａとの間に空間を形成して第一部材５１および第二部材５２を配置している。 Further, in the apparatus shown in FIG. 4 (b), the crimping roller 60A is used in the same manner as in the apparatus shown in FIG. After bonding the negative electrode raw fabric 20A and the separator raw fabrics 10A and 30A without arranging the first member 51 and the second member 52, the position sucked in the recess 63 using the suction device 64 (negative electrode raw fabric 20A). The first member 51 and the second member 52 are arranged so as to form a space between the negative electrode raw fabric 20A and the separator raw fabrics 10A and 30A at the position where the separator raw fabrics 10A and 30A are not bonded together. ..

更に、上述した製造方法の一例では、第一部材５１および第二部材５２として、それぞれ、電極原反の長手方向に微小な隙間を空けて配置された一対の分割部材を使用したが、図５に示すように、第一部材５１および第二部材５２としては、単一の部材を使用してもよい。但し、貼り合わせ体の切断の容易性の観点からは、一対の分割部材よりなる第一部材５１および第二部材５２を使用することが好ましい。
なお、単一の部材よりなる第一部材５１および第二部材５２を使用した場合には、切断されて２つに分かれた部材（第一部材５１の切断片および第二部材５２の切断片）が挟持部材となる。Further, in the above-mentioned example of the manufacturing method, as the first member 51 and the second member 52, a pair of divided members arranged with a minute gap in the longitudinal direction of the electrode raw fabric were used, respectively. As shown in the above, a single member may be used as the first member 51 and the second member 52. However, from the viewpoint of ease of cutting the bonded body, it is preferable to use the first member 51 and the second member 52 made of a pair of split members.
When the first member 51 and the second member 52 made of a single member are used, the members are cut and divided into two (cut pieces of the first member 51 and cut pieces of the second member 52). Is a holding member.

その他、挟持部材の形状および挟持部材を用いた位置決めの方法も、上述した製造方法の一例には限定されず、例えば図６（ａ）〜（ｃ）に示すようにすることができる。 In addition, the shape of the holding member and the positioning method using the holding member are not limited to the above-mentioned example of the manufacturing method, and can be shown in FIGS. 6 (a) to 6 (c), for example.

ここで、図６（ａ）に示す例では、十字状の挟持部材５１ａ’を使用し、挟持部材５１ａ’の十字部分をガイド部材の柱状部材９１，９２に係合させることで、左右および前後方向の位置決めを行っている。
また、図６（ｂ）に示す例では、柱状部材９１，９２の間に挟持部材５１ａを入れることにより左右方向の位置決めを行うと共に、柱状部材９５に挟持部材５１ａの先端を当接させることで前後方向の位置決めを行っている。
更に、図６（ｃ）に示す例では、Ｕ字状の挟持部材５１ｃを使用し、Ｕ字の底辺部分を柱状部材９６，９７に係合させることで、左右および前後方向の位置決めを行っている。Here, in the example shown in FIG. 6A, a cross-shaped holding member 51a'is used, and the cross portion of the holding member 51a'is engaged with the columnar members 91 and 92 of the guide member, thereby left and right and front and back. The direction is positioned.
Further, in the example shown in FIG. 6B, the sandwiching member 51a is inserted between the columnar members 91 and 92 to perform positioning in the left-right direction, and the tip of the sandwiching member 51a is brought into contact with the columnar member 95. Positioning is performed in the front-back direction.
Further, in the example shown in FIG. 6C, a U-shaped sandwiching member 51c is used, and the bottom portion of the U-shape is engaged with the columnar members 96 and 97 to perform positioning in the left-right and front-rear directions. There is.

また、本発明の製造方法を実施し得る製造装置は、図１に示す装置に限定されず、本発明の製造方法では、電極構造体の構成部材と、構成部材を厚み方向に挟持する挟持部材とを備える積層用部材を準備する積層用部材作製部と、積層用部材を位置決めしつつ構成部材の厚み方向が積層方向となるように積層する積層部と、積層された積層用部材から挟持部材を除去する除去部とを備えている任意の製造装置を使用することができる。 Further, the manufacturing apparatus capable of carrying out the manufacturing method of the present invention is not limited to the apparatus shown in FIG. 1, and in the manufacturing method of the present invention, the constituent members of the electrode structure and the sandwiching members that sandwich the constituent members in the thickness direction A laminating member manufacturing unit that prepares a laminating member having Any manufacturing apparatus can be used that includes a removal section that removes.

本発明によれば、異物混入の原因となる虞が低減された電極構造体を効率的に製造することができる。 According to the present invention, it is possible to efficiently manufacture an electrode structure in which the risk of causing foreign matter to be mixed is reduced.

１０，３０ セパレータ
１０Ａ，３０Ａ セパレータ原反
１０Ｒ，３０Ｒ セパレータロール
２０ 負極
２０Ａ 負極原反
２０Ｒ 負極ロール
２１ 負極用集電体
２２，２３ 負極合材層
４０ 正極
４１ 正極用集電体
４２，４３ 正極合材層
５１ 第一部材
５２ 第二部材
５１ａ，５１ｂ，５２ａ，５２ｂ，５１ａ’，５１ｃ 挟持部材（分割部材）
６０ 圧着ローラ
６０Ａ 圧着ローラ
６１ 上部ローラ
６１Ａ，６２Ａ サクションローラ
６２ 下部ローラ
６３ 凹部
６４ 吸引装置
７０ 圧着ローラ
８０ レーザー切断機
９０ ガイド部材
９１〜９７ 柱状部材
１００ 製造装置
２００ 電極構造体
３００〜３００Ｅ” 積層用部材
Ｌ レーザー10,30 Separator 10A, 30A Separator original fabric 10R, 30R Separator roll 20 Negative electrode 20A Negative electrode original fabric 20R Negative electrode roll 21 Negative electrode current collector 22,23 Negative electrode mixture layer 40 Positive electrode 41 Positive electrode current collector 42, 43 Positive electrode Material layer 51 First member 52 Second member 51a, 51b, 52a, 52b, 51a', 51c Holding member (split member)
60 Crimping roller 60A Crimping roller 61 Upper roller 61A, 62A Suction roller 62 Lower roller 63 Recess 64 Suction device 70 Crimping roller 80 Laser cutting machine 90 Guide member 91-97 Column member 100 Manufacturing device 200 Electrode structure 300 to 300E "For lamination Member L laser

Claims (7)

第一電極と、セパレータと、第二電極と、セパレータとがこの順で多数積層されてなる電極構造体の製造方法であって、
前記電極構造体の構成部材と、前記構成部材を厚み方向に挟持する挟持部材とを備える積層用部材を準備する工程（Ａ）と、
前記積層用部材を位置決めしつつ前記構成部材の厚み方向が積層方向となるように積層する工程（Ｂ）と、
積層された前記積層用部材から前記挟持部材を除去する工程（Ｃ）と、
を含み、
前記積層用部材は、前記挟持部材で両端部を挟持された前記第一電極または前記第二電極からなる電極と、前記電極の少なくとも一方の表面側に設けられ、前記挟持部材間で前記電極の表面に貼り合わされると共に両端部が前記挟持部材を介して前記電極に対向するセパレータとを備える積層体を含み、
前記工程（Ｂ）では、前記挟持部材を利用して前記位置決めを行う、電極構造体の製造方法。A method for manufacturing an electrode structure in which a large number of first electrodes, separators, second electrodes, and separators are laminated in this order.
A step (A) of preparing a laminating member including a constituent member of the electrode structure and a sandwiching member that sandwiches the constituent member in the thickness direction.
A step (B) of laminating the components so that the thickness direction of the components is the laminating direction while positioning the laminating members.
The step (C) of removing the sandwiching member from the laminated members, and
Including
The laminating member is provided on the surface side of at least one of the first electrode or the second electrode whose both ends are sandwiched by the sandwiching member, and the electrode between the sandwiching members. Includes a laminate that is attached to the surface and has separators at both ends facing the electrodes via the sandwiching member.
In the step (B), a method for manufacturing an electrode structure, in which the positioning is performed using the sandwiching member. 前記工程（Ａ）で準備する前記積層用部材が、
前記挟持部材で両端部を挟持された前記第二電極と、
前記第二電極の一方の表面側に設けられ、前記挟持部材間で前記第二電極の一方の表面に貼り合わされると共に両端部が前記挟持部材を介して前記第二電極に対向するセパレータと、
前記第二電極の他方の表面側に設けられ、前記挟持部材間で前記第二電極の他方の表面に貼り合わされると共に両端部が前記挟持部材を介して前記第二電極に対向するセパレータと、
前記第二電極の一方の表面側に設けられた前記セパレータの前記第二電極に貼り合わされた面とは反対側の面に貼り合わされた第一電極と、
を備える積層体である、請求項１に記載の電極構造体の製造方法。The laminating member prepared in the step (A)
With the second electrode whose both ends are sandwiched by the sandwiching member,
A separator provided on one surface side of the second electrode, bonded to one surface of the second electrode between the sandwiching members, and both ends facing the second electrode via the sandwiching member.
A separator provided on the other surface side of the second electrode, bonded to the other surface of the second electrode between the sandwiching members, and both ends facing the second electrode via the sandwiching member.
A first electrode attached to a surface of the separator provided on one surface side of the second electrode and opposite to the surface attached to the second electrode.
The method for manufacturing an electrode structure according to claim 1, which is a laminated body comprising the above. 前記工程（Ｂ）では、前記挟持部材と係合するガイド部材を用いて前記積層用部材を位置決めおよび積層する、請求項１または２に記載の電極構造体の製造方法。 The method for manufacturing an electrode structure according to claim 1 or 2, wherein in the step (B), the laminating member is positioned and laminated using a guide member that engages with the sandwiching member. 前記工程（Ａ）が、前記積層体を形成する工程（ａ１）を含み、
前記工程（ａ１）では、長尺の電極原反と、前記電極原反の一方の表面上に電極原反の長手方向に互いに離隔させて配置された複数の第一部材と、前記電極原反の他方の表面上の前記第一部材に対向する位置に配置された複数の第二部材と、前記電極原反の少なくとも一方の表面側に位置して前記第一部材間および／または前記第二部材間で前記電極原反に貼り合わされている長尺のセパレータ原反とを備える貼り合わせ体を、前記第一部材および前記第二部材が配置されている位置で切断して前記積層体を形成する、請求項１〜３の何れかに記載の電極構造体の製造方法。The step (A) includes a step (a1) of forming the laminate.
In the step (a1), a long electrode raw fabric, a plurality of first members arranged on one surface of the electrode raw fabric separated from each other in the longitudinal direction of the electrode raw fabric, and the electrode raw fabric. A plurality of second members arranged at positions facing the first member on the other surface of the electrode, and between the first members and / or the second member located on at least one surface side of the electrode raw fabric. The laminated body including the long separator raw fabric bonded to the electrode raw fabric between the members is cut at the position where the first member and the second member are arranged to form the laminated body. The method for manufacturing an electrode structure according to any one of claims 1 to 3. 前記工程（ａ１）は、前記セパレータ原反と前記電極原反とを前記第一部材および／または前記第二部材を介在させた状態で接合させ、前記セパレータ原反と前記電極原反とを貼り合わせて前記貼り合わせ体を得る工程（ａ１１）を含む、請求項４に記載の電極構造体の製造方法。 In the step (a1), the separator raw fabric and the electrode raw fabric are joined with the first member and / or the second member interposed therebetween, and the separator raw fabric and the electrode raw fabric are attached. The method for manufacturing an electrode structure according to claim 4, further comprising the step (a11) of obtaining the bonded body together. 前記第一部材および前記第二部材が、電極原反の長手方向に微小な隙間を空けて配置された一対の分割部材よりなり、
前記貼り合わせ体を、前記微小な隙間が設けられた位置で切断する、請求項４または５に記載の電極構造体の製造方法。The first member and the second member are composed of a pair of divided members arranged with a minute gap in the longitudinal direction of the electrode raw fabric.
The method for manufacturing an electrode structure according to claim 4 or 5, wherein the bonded body is cut at a position where the minute gap is provided. 前記挟持部材が、前記構成部材に対して非接着性の部材よりなる、請求項１〜６の何れかに記載の電極構造体の製造方法。 The method for manufacturing an electrode structure according to any one of claims 1 to 6, wherein the sandwiching member is made of a member that is non-adhesive to the constituent member.
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