JP2018063752A - Laminated battery manufacturing apparatus - Google Patents

Laminated battery manufacturing apparatus Download PDF

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JP2018063752A
JP2018063752A JP2016199656A JP2016199656A JP2018063752A JP 2018063752 A JP2018063752 A JP 2018063752A JP 2016199656 A JP2016199656 A JP 2016199656A JP 2016199656 A JP2016199656 A JP 2016199656A JP 2018063752 A JP2018063752 A JP 2018063752A
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electrode foil
foil
fabric
electrode
strip
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JP6702126B2 (en
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洋人 福田
Hiroto Fukuda
洋人 福田
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Toyota Motor Corp
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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
    • 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

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Abstract

PROBLEM TO BE SOLVED: To provide a laminated battery manufacturing apparatus with improved productivity.SOLUTION: If a defect of a negative electrode foil roll 12 is detected by a negative electrode defect detection part 22, a control part 20 stops conveyance of the negative electrode foil roll 12 by a first electrode foil conveyance mechanism, and then controls a pedestal turning mechanism so as to position an auxiliary pedestal 23 on a conveyance path of the first electrode foil conveyance mechanism.SELECTED DRAWING: Figure 2

Description

本発明は、いずれも短冊状の箔である第１電極および第２電極を交互に積層した構造の積層電池を製造する積層電池製造装置に関するものである。   The present invention relates to a multilayer battery manufacturing apparatus for manufacturing a multilayer battery having a structure in which first and second electrodes, which are strip-shaped foils, are alternately stacked.

近年、環境保護、省エネルギーの観点から、エンジンとモータを動力源として併用したハイブリッド自動車やモータを動力源とした電気自動車が開発、製品化されている。このハイブリッド自動車や電気自動車のエネルギー源として、電気を繰り返し充電放電可能な二次電池は必須の技術である。
一般的にこの二次電池としては、リチウム二次電池、ニッケル二次電池などの二次電池が用いられるが、なかでも、リチウム二次電池は、その動作電圧が高く、高い出力を得やすいので有力な電池であり、ハイブリッド自動車や電気自動車の電源としてますます重要性が増してきている電池である。
従来から、リチウム二次電池やその他の電池として、第１電極と第２電極とを交互に重ね合わせた電極積層体を内蔵するものが使用されている。このような電極積層体には、第１電極および第２電極としていずれも短冊状の箔を利用し、これらを平積み状に積層した構造のものがある。 In recent years, hybrid vehicles using an engine and a motor as a power source and electric vehicles using a motor as a power source have been developed and commercialized from the viewpoint of environmental protection and energy saving. A secondary battery capable of repeatedly charging and discharging electricity is an indispensable technology as an energy source for hybrid vehicles and electric vehicles.
Generally, a secondary battery such as a lithium secondary battery or a nickel secondary battery is used as the secondary battery. Among them, a lithium secondary battery has a high operating voltage and can easily obtain a high output. It is a powerful battery, and it has become increasingly important as a power source for hybrid vehicles and electric vehicles.
2. Description of the Related Art Conventionally, lithium secondary batteries and other batteries that incorporate an electrode stack in which first electrodes and second electrodes are alternately stacked have been used. Such an electrode laminate includes a structure in which strip-like foils are used as the first electrode and the second electrode, and these are laminated in a flat stack.

このような積層構造の電極積層体を製造する先行技術として、特許文献１に記載されている積層体の作製装置および作製方法が挙げられる。同文献の技術では、短冊状の電極板である２枚の「シート状体３」が、その「供給機構７」から交互に供給されるようになっている。「供給機構７」の下方には、「落下移動手段９」と「案内積層手段１１」とが配置されている。「落下移動手段９」は、重力を利用して「シート状体３」を「供給機構７」から「案内積層手段１１」へと落下移動させるものである。こうして、２枚の「シート状体３」が「案内積層手段１１」上に順次案内され、そこで積層されるようになっている（同文献の［００１５］〜［００１９］、図１、図３）。   As a prior art for producing an electrode laminate having such a laminate structure, a laminate production apparatus and production method described in Patent Document 1 can be cited. In the technique of this document, two “sheet-like bodies 3”, which are strip-like electrode plates, are alternately supplied from the “supply mechanism 7”. Below the “supply mechanism 7”, “drop moving means 9” and “guide stacking means 11” are arranged. The “falling movement means 9” is a means for dropping the “sheet-like body 3” from the “supply mechanism 7” to the “guide stacking means 11” using gravity. In this way, the two “sheet-like bodies 3” are sequentially guided on the “guide laminating means 11” and laminated there ([0015] to [0019] of the same document, FIGS. 1 and 3). ).

特開２０１２−９１３７２号公報JP 2012-91372 A

しかしながら前記した従来の技術には、次のような問題点があった。すなわち、前記した従来の技術では、「案内積層手段１１」上に積層される「シート状体３」の欠陥について考慮が全くされていない。このため、ある「シート状体３」に欠陥があった場合、「案内積層手段１１」上に形成される積層体も欠陥となって積層体全部を廃棄する必要があり、したがって、積層体の歩留まりが非常に低下して生産性が悪かった。   However, the conventional techniques described above have the following problems. That is, in the above-described conventional technology, no consideration is given to the defect of the “sheet-like body 3” laminated on the “guide laminating means 11”. For this reason, when a certain “sheet-like body 3” has a defect, the laminated body formed on the “guide laminating means 11” also becomes a defect, and it is necessary to discard the entire laminated body. The yield was very low and productivity was poor.

本発明は、前記した従来の技術が有する問題点を解決するためになされたものであり、その目的とするところは、生産性が向上した積層電池製造装置を提供することにある。   The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a laminated battery manufacturing apparatus with improved productivity.

上記の問題点を解決するために、本発明の積層電池製造装置は、次の構成を有している。
（１）第１電極箔短冊と第２電極箔短冊とが交互に積層された構造の積層電池を製造する積層電池製造装置であって、第１電極箔反物をその長手方向に進行させて搬送する第１電極箔搬送機構と、前記第１電極箔反物の上に、前記第２電極箔短冊を長手方向に対して順次並んで配置されるように搬送する第２電極箔搬送機構と、前記第２電極箔短冊が配置された前記第１電極箔反物における前記第２電極箔短冊のない箇所を幅方向に切断することで、前記第１電極箔短冊と前記第２電極箔短冊とが１枚ずつ積層された電極箔ペア短冊とする切断機構と、前記第１電極箔短冊の欠陥を検出する検出部と、前記電極箔ペア短冊が積層される台座と、前記検出部により欠陥を検出した前記第１電極箔短冊が積層された電極箔ペア短冊を載置する補助台座と、前記台座もしくは前記補助台座のいずれかを前記第１電極箔搬送機構の搬送路上に位置させる台座転換機構と、制御手段と、を備え、前記制御手段は、前記検出部が前記第１電極箔短冊の欠陥を検出した際に、前記第１電極箔搬送機構による前記第１電極箔反物の搬送を停止させ、前記台座転換機構によって前記補助台座が前記第１電極箔搬送機構の搬送路上に位置するように制御することを特徴とする。 In order to solve the above problems, the laminated battery manufacturing apparatus of the present invention has the following configuration.
(1) A stacked battery manufacturing apparatus for manufacturing a stacked battery having a structure in which first electrode foil strips and second electrode foil strips are alternately stacked, and transports the first electrode foil fabric in the longitudinal direction. The first electrode foil transport mechanism, the second electrode foil transport mechanism for transporting the second electrode foil strips so as to be sequentially arranged in the longitudinal direction on the first electrode foil fabric, The first electrode foil strip and the second electrode foil strip are 1 by cutting, in the width direction, a portion without the second electrode foil strip in the first electrode foil fabric in which the second electrode foil strip is disposed. A cutting mechanism for forming electrode foil pair strips stacked one by one, a detection unit for detecting defects in the first electrode foil strips, a pedestal on which the electrode foil pair strips are stacked, and the detection unit detecting defects. Auxiliary for placing electrode foil pair strips on which the first electrode foil strips are stacked A seat, a pedestal changing mechanism for positioning either the pedestal or the auxiliary pedestal on the transport path of the first electrode foil transport mechanism, and a control unit, wherein the detection unit includes the first detecting unit. When the defect of the electrode foil strip is detected, the conveyance of the first electrode foil fabric is stopped by the first electrode foil conveyance mechanism, and the auxiliary pedestal is moved on the conveyance path of the first electrode foil conveyance mechanism by the pedestal changing mechanism. It controls so that it may be located in.

上記構成を有する本発明の積層電池製造装置の作用・効果について説明する。
（１）前記制御手段は、前記検出部が前記第１電極箔短冊の欠陥を検出した際に、前記第１電極箔搬送機構による前記第１電極箔反物の搬送を停止させ、前記台座転換機構によって前記補助台座が前記第１電極箔搬送機構の搬送路上に位置するように制御するため、欠陥がある前記第１電極箔短冊が積層された電極箔ペア短冊は補助台座上に載置され、つまり、前記台座には、欠陥がない前記第１電極箔短冊が積層された電極箔ペア短冊のみが積層され、したがって、積層電池製造装置の生産性が非常に向上するなど優れた作用効果を奏する。 The operation and effect of the laminated battery manufacturing apparatus of the present invention having the above configuration will be described.
(1) When the detection unit detects a defect in the first electrode foil strip, the control means stops the conveyance of the first electrode foil fabric by the first electrode foil conveyance mechanism, and the pedestal changing mechanism In order to control the auxiliary pedestal to be positioned on the transport path of the first electrode foil transport mechanism, the electrode foil pair strips in which the defective first electrode foil strips are stacked are placed on the auxiliary pedestal, That is, only the electrode foil pair strips in which the first electrode foil strips having no defects are stacked are stacked on the pedestal, and therefore, excellent effects such as extremely improved productivity of the multilayer battery manufacturing apparatus are achieved. .

本発明を実施する積層電池製造装置を簡略的に示す図である。It is a figure which shows simply the laminated battery manufacturing apparatus which implements this invention. 本発明を実施する積層電池製造装置の要部を簡略的に示す図である。It is a figure which shows simply the principal part of the laminated battery manufacturing apparatus which implements this invention.

（実施形態１）
以下、本発明に係る積層電池製造装置について、図面に基づいて詳細に説明する。なお、以下の実施形態において図は、適宜簡略化或いは変形誇張されて描画されており、各部の寸法比および形状等は必ずしも実施例と同一ではない。 (Embodiment 1)
Hereinafter, the laminated battery manufacturing apparatus according to the present invention will be described in detail with reference to the drawings. In the following embodiments, the drawings are drawn with simplified or modified exaggeration as appropriate, and the dimensional ratios, shapes, and the like of the respective parts are not necessarily the same as those in the examples.

図１は、本発明を実施する積層電池製造装置を簡略的に示す図である。
すなわち、積層電池製造装置１は、正極反物供給部２と、負極反物供給部３と、正極反物切断機構４と、貼り合わせロール５と、ニップロール１６と、負極反物切断機構６と、台座７と、プレスロール８とを有している。前記正極反物供給部２には、正極箔反物コイル９が取り付けられており、正極箔反物１０が巻き出されるようになっている。前記負極反物供給部３には、負極箔反物コイル１１が取り付けられており、負極箔反物１２が巻き出されるようになっている。前記正極箔反物１０および前記負極箔反物１２はいずれも、長尺箔状のものであり、集電箔の表面上に電極活物質層が形成された構造のものである。前記負極箔反物１２の表面上にはさらに、セパレータ層も形成されている。前記正極箔反物１０および前記負極箔反物１２はいずれも、その長手方向に進行して前記貼り合わせロール５へ向かうように構成されている。 FIG. 1 is a diagram schematically showing a laminated battery manufacturing apparatus for carrying out the present invention.
That is, the laminated battery manufacturing apparatus 1 includes a positive electrode anti-substance supply unit 2, a negative electrode anti-substance supply unit 3, a positive electrode anti-substance cutting mechanism 4, a bonding roll 5, a nip roll 16, a negative electrode anti-substance cutting mechanism 6, and a pedestal 7. And a press roll 8. A positive foil material 10 is attached to the positive material supply part 2 so that the positive material 10 is unwound. A negative electrode foil fabric object coil 11 is attached to the negative electrode fabric object supply unit 3, and a negative electrode foil fabric object 12 is unwound. Each of the positive electrode foil fabric 10 and the negative foil fabric 12 has a long foil shape and has a structure in which an electrode active material layer is formed on the surface of the current collector foil. A separator layer is also formed on the surface of the negative electrode foil fabric 12. Both the positive foil fabric 10 and the negative foil fabric 12 are configured to travel in the longitudinal direction toward the bonding roll 5.

また、前記貼り合わせロール５まで搬送された前記負極箔反物１２は、後述する正極箔短冊１３とともに前記ニップロール１６によって前記プレスロール８に向かって搬送されるように構成されている。
したがって、前記貼り合わせロール５および前記ニップロール１６などによって、本発明の第１電極箔搬送機構が構成され、また、前記負極箔反物１２が本発明の第１電極箔反物に相当する。 Moreover, the said negative electrode foil fabric 12 conveyed to the said bonding roll 5 is comprised so that it may be conveyed toward the said press roll 8 by the said nip roll 16 with the positive electrode foil strip 13 mentioned later.
Accordingly, the bonding roll 5 and the nip roll 16 constitute a first electrode foil transport mechanism of the present invention, and the negative electrode foil fabric 12 corresponds to the first electrode foil fabric of the present invention.

前記正極反物切断機構４は、前記正極箔反物１０を幅方向に切断することで、カード状の正極箔短冊１３とするものである。前記貼り合わせロール５は、前記負極箔反物１２と前記正極箔短冊１３とを貼り合わせるものである。このため前記貼り合わせロール５に対して、前記負極箔反物１２はそのまま、前記正極箔反物１０は前記正極反物切断機構４によって切断されて前記正極箔短冊１３となってから、供給されるようになっている。前記正極箔短冊１３はさらに、上下一対の２組の搬送ローラ１７により、貼り合わせロール５に対して、前記負極箔反物１２の長手方向に順次連続して供給されるようになっている。
したがって、前記搬送ローラ１７などによって本発明の第２電極箔搬送機構が構成される。
なお、前記正極箔反物１０の、その長手方向とは直交する幅は、前記負極箔反物１２の幅よりもやや狭く設定されており、したがって、前記負極箔反物１２上に前記正極箔短冊１３が貼り合わされた状態では、前記負極箔反物１２の片側の縁側には、前記正極箔短冊１３が存在しない部分（図２において手前部分）が存在する。 The positive electrode fabric cut mechanism 4 is a card-like positive foil strip 13 by cutting the positive foil fabric 10 in the width direction. The laminating roll 5 is for laminating the negative electrode foil fabric 12 and the positive foil strip 13. Therefore, the negative electrode foil fabric 12 is supplied to the laminating roll 5 as it is, and the positive foil fabric 10 is cut by the positive electrode fabric cutting mechanism 4 to become the positive foil strip 13 before being supplied. It has become. The positive foil strip 13 is further supplied successively to the bonding roll 5 in the longitudinal direction of the negative foil fabric 12 by a pair of upper and lower transport rollers 17.
Accordingly, the second electrode foil transport mechanism of the present invention is configured by the transport roller 17 and the like.
In addition, the width | variety orthogonal to the longitudinal direction of the said positive electrode foil fabric 10 is set a little narrower than the width | variety of the said negative electrode foil fabric 12, Therefore, the said positive foil strip 13 is on the said negative foil fabric 12. In the bonded state, a portion (the front portion in FIG. 2) where the positive foil strip 13 does not exist is present on one edge side of the negative electrode foil fabric 12.

前記正極反物切断機構４の上流側には、前記正極箔反物１０の欠陥を検出するための正極欠陥検出部１８が配置されており、前記正極欠陥検出部１８は、前記正極箔反物１０の製造工程の最終検査において前記正極箔反物１０に欠陥が検出された箇所に対応して記録されたマーク（図示せず）を検出可能である。したがって、制御部２０は、前記正極欠陥検出部１８によって前記正極箔反物１０に欠陥を検出した際には、案内板１９を前記正極箔短冊１３の搬送経路内に突出させ、それによって前記正極箔反物１０から前記正極反物切断機構４によって切断された欠陥がある前記正極箔短冊１３が回収容器２１へ向かって案内されるように制御する。
なお、前記制御部２０は、周知のＣＰＵ、制御プログラムを記憶したＲＯＭおよびＲＡＭ等によって構成され、本発明の制御手段に相当する。 A positive electrode defect detector 18 for detecting a defect of the positive electrode foil fabric 10 is disposed on the upstream side of the positive electrode fabric cutting mechanism 4, and the positive electrode defect detector 18 manufactures the positive foil fabric 10. It is possible to detect a mark (not shown) recorded corresponding to a position where a defect is detected in the positive foil 10 in the final inspection of the process. Therefore, the control unit 20 causes the guide plate 19 to protrude into the transport path of the positive foil strip 13 when the positive electrode defect detection unit 18 detects a defect in the positive foil member 10, thereby the positive foil. Control is performed so that the positive foil strip 13 having a defect cut from the fabric 10 by the cathode fabric cutting mechanism 4 is guided toward the collection container 21.
The control unit 20 includes a well-known CPU, a ROM and a RAM storing a control program, and corresponds to the control means of the present invention.

本発明の切断機構としての前記負極反物切断機構６は、前記負極箔反物１２を幅方向に切断するものである。この切断により、前記正極箔短冊１３と負極箔短冊とが１枚ずつ積層された電極箔ペア短冊１４が得られる。なお、前記正極箔短冊１３が本発明の第２電極箔短冊に相当し、前記負極箔短冊が本発明の第１電極箔短冊に相当する。
前記台座７は、得られた前記電極箔ペア短冊１４を置くためのものである。前記プレスロール８は、前記台座７の上に多数枚積層された前記電極箔ペア短冊１４を厚み方向にプレスするものである。なお、前記負極反物切断機構６のすぐ上流側には、前記負極箔反物１２と前記正極箔短冊１３とを支持する前記ニップロール１６が設けられている。 The negative electrode fabric workpiece cutting mechanism 6 as a cutting mechanism of the present invention cuts the negative electrode foil fabric workpiece 12 in the width direction. By this cutting, an electrode foil pair strip 14 in which the positive foil strip 13 and the negative foil strip are laminated one by one is obtained. The positive foil strip 13 corresponds to the second electrode foil strip of the present invention, and the negative foil foil strip corresponds to the first electrode foil strip of the present invention.
The pedestal 7 is for placing the obtained electrode foil pair strip 14. The press roll 8 presses a plurality of the electrode foil pair strips 14 laminated on the base 7 in the thickness direction. Note that the nip roll 16 that supports the negative electrode foil fabric 12 and the positive foil strip 13 is provided immediately upstream of the negative electrode workpiece cutting mechanism 6.

図２は、本発明を実施する積層電池製造装置の要部を簡略的に示す図である。
すなわち、前記台座７に隣接して補助台座２３が設けられており、前記台座７および前記補助台座２３は、共通のベースフレーム２４上にそれぞれ上下方向に移動可能に設けられている。前記ベースフレーム２４は、前記積層電池製造装置１の本体フレーム２５上に、前記第１電極箔搬送機構の搬送方向とは直交する方向に移動可能に支持されている。また、前記ベースフレーム２４は、前記ベースフレーム２４と前記本体フレーム２５との間に設けられたリニアモータなどのアクチュエータ（図示せず）によって前記第１電極箔搬送機構の搬送方向と直交する方向に駆動されるようになっている。
したがって、前記制御部２０は、前記アクチュエータを駆動することによって前記ベースフレーム２４を移動させ、それによって前記台座７もしくは前記補助台座２３が前記第１電極箔搬送機構の搬送路上に位置するように制御することができ、したがって、前記アクチュエータおよび前記ベースフレーム２４などによって本発明の台座転換機構が構成される。 FIG. 2 is a diagram schematically showing a main part of the laminated battery manufacturing apparatus for carrying out the present invention.
That is, an auxiliary pedestal 23 is provided adjacent to the pedestal 7, and the pedestal 7 and the auxiliary pedestal 23 are provided on a common base frame 24 so as to be movable in the vertical direction. The base frame 24 is supported on the main body frame 25 of the multilayer battery manufacturing apparatus 1 so as to be movable in a direction orthogonal to the transport direction of the first electrode foil transport mechanism. The base frame 24 is moved in a direction orthogonal to the transport direction of the first electrode foil transport mechanism by an actuator (not shown) such as a linear motor provided between the base frame 24 and the main body frame 25. It is designed to be driven.
Therefore, the control unit 20 controls the movement of the base frame 24 by driving the actuator so that the pedestal 7 or the auxiliary pedestal 23 is positioned on the conveyance path of the first electrode foil conveyance mechanism. Therefore, the pedestal changing mechanism of the present invention is constituted by the actuator, the base frame 24 and the like.

前記ニップロール１６の上流側には、前記負極箔反物１２の欠陥を検出するための本発明の検出部としての負極欠陥検出部２２が配置されており、前記負極欠陥検出部２２は、前記負極箔反物１２の製造工程の最終検査において前記負極箔反物１２の欠陥箇所に対応して記録されたマーク（図示せず）を検出可能である。
したがって、前記制御部２０は、前記負極欠陥検出部２２によって前記負極箔反物１２に欠陥を検出した際には、前記アクチュエータを駆動することによって前記第１電極箔搬送機構の搬送路上から前記台座７を退避させるとともに前記補助台座２３を位置させ、それによって、欠陥がある負極箔短冊と前記正極箔短冊１３とから成る欠陥電極箔ペア短冊１４ａが前記補助台座２３上に積層支持されるように制御することができる。 On the upstream side of the nip roll 16, a negative electrode defect detection unit 22 as a detection unit of the present invention for detecting defects in the negative electrode foil fabric 12 is disposed, and the negative electrode defect detection unit 22 includes the negative electrode foil. A mark (not shown) recorded corresponding to the defective portion of the negative electrode foil fabric 12 can be detected in the final inspection of the manufacturing process of the fabric 12.
Therefore, when the negative electrode defect detecting unit 22 detects a defect in the negative foil foil workpiece 12, the control unit 20 drives the actuator to drive the pedestal 7 from the conveyance path of the first electrode foil conveyance mechanism. And the auxiliary pedestal 23 is positioned so that a defective electrode foil pair strip 14a composed of a defective negative electrode foil strip and the positive foil strip 13 is stacked and supported on the auxiliary pedestal 23. can do.

次に、上記の積層電池製造装置１の作用を説明する。積層電池製造装置１により電極積層体１５を製造する際には、貼り合わせロール５に対して、負極箔反物１２と、正極箔短冊１３とが供給される。負極箔反物１２は前述のように、負極反物供給部３から供給され、長手方向に進行することにより貼り合わせロール５に至る。正極箔短冊１３は、正極反物供給部２から正極反物切断機構４および搬送ローラ１７を介して貼り合わせロール５に供給される。貼り合わせロール５にて正極箔短冊１３は、負極箔反物１２の上に、長手方向に対してわずかな間隔をおいて順次並べられて配置される。   Next, the operation of the laminated battery manufacturing apparatus 1 will be described. When the electrode laminate 15 is produced by the laminated battery production apparatus 1, the negative foil foil 12 and the positive foil strip 13 are supplied to the bonding roll 5. The negative electrode foil fabric 12 is supplied from the negative electrode fabric supply unit 3 as described above, and reaches the laminating roll 5 by proceeding in the longitudinal direction. The positive foil strip 13 is supplied to the laminating roll 5 from the positive electrode fabric supply unit 2 via the positive electrode fabric cutting mechanism 4 and the conveying roller 17. In the laminating roll 5, the positive foil strips 13 are sequentially arranged on the negative foil fabric 12 at a slight interval in the longitudinal direction.

この際、制御部２０は、正極欠陥検出部１８によって正極箔反物１０に欠陥を検出し、かつ欠陥がある正極箔反物１０が正極反物切断機構４の手前部分に差し掛かった際には、案内板１９を正極箔短冊１３の搬送経路内に突出させて欠陥がある正極箔反物１０、つまり正極反物切断機構４により切断された後の正極箔短冊１３を回収容器２１へ向かって案内するように制御する。
したがって、貼り合わせロール５上の負極箔反物１２には、欠陥がない正極箔短冊１３のみ供給されることとなる。 At this time, the control unit 20 detects a defect in the positive electrode foil fabric 10 by the positive electrode defect detection unit 18, and when the defective positive foil fabric 10 reaches the front portion of the positive electrode fabric cutting mechanism 4, the guide plate 19 is protruded into the transport path of the positive foil strip 13 to control the positive foil strip 10 having a defect, that is, the positive foil strip 13 after being cut by the positive fabric cutting mechanism 4 to the recovery container 21. To do.
Therefore, only the positive foil strip 13 having no defect is supplied to the negative foil fabric 12 on the bonding roll 5.

その後貼り合わせロール５により、正極箔短冊１３および負極箔反物１２が厚み方向に軽く押し付けられる。この状態で正極箔短冊１３は、負極箔反物１２に対して軽く接着されている。負極箔反物１２のセパレータ層にある程度の接着性があるからである。このためこれ以後、振動等で容易に正極箔短冊１３の位置が負極箔反物１２に対してずれてしまうことはない。   Thereafter, the positive electrode foil strip 13 and the negative electrode foil fabric 12 are lightly pressed in the thickness direction by the laminating roll 5. In this state, the positive foil strip 13 is lightly bonded to the negative foil fabric 12. This is because the separator layer of the negative electrode foil fabric 12 has a certain degree of adhesiveness. Therefore, thereafter, the position of the positive foil strip 13 is not easily shifted with respect to the negative foil fabric 12 due to vibration or the like.

貼り合わせロール５より下流側における正極箔短冊１３および負極箔反物１２は、負極箔反物１２の上に、正極箔短冊１３が長手方向に対してわずかな間隔をおいて順次並んで配置された状態となっている。このような状態の正極箔短冊１３および負極箔反物１２が、貼り合わせロール５から負極反物切断機構６へ向かう。負極反物切断機構６に至った負極箔反物１２は、幅方向に切断される。負極反物切断機構６が切断するのは、負極箔反物１２のうち、正極箔短冊１３と次の正極箔短冊１３との間の正極箔短冊１３が存在しない箇所である。   The state in which the positive foil strip 13 and the negative foil strip 12 on the downstream side of the laminating roll 5 are sequentially arranged on the negative foil fabric 12 with the positive foil strip 13 sequentially arranged at a slight interval in the longitudinal direction. It has become. The positive foil strip 13 and the negative electrode foil fabric 12 in such a state are directed from the bonding roll 5 to the negative electrode fabric cutting mechanism 6. The negative electrode foil fabric 12 that has reached the negative electrode fabric cutting mechanism 6 is cut in the width direction. The negative electrode fabric cut mechanism 6 cuts the portion of the negative foil fabric 12 where the positive foil strip 13 between the positive foil strip 13 and the next positive foil strip 13 does not exist.

こうして電極箔ペア短冊１４が得られる。負極箔反物１２の進行とともに次々に電極箔ペア短冊１４が得られるので、台座７の上には多数枚の電極箔ペア短冊１４が積層されることとなる。台座７の上に積層された電極箔ペア短冊１４は、プレスロール８により、厚み方向にプレスされる。より詳細には、新たに１枚の電極箔ペア短冊１４が台座７の上に置かれるたびに、プレスロール８によるプレスが実施される。これにより、新たに供給された電極箔ペア短冊１４が、先に供給されてすでに台座７の上に積層されている電極箔ペア短冊１４に対して一体化される。前述のセパレータ層の接着性による。   In this way, the electrode foil pair strip 14 is obtained. Since the electrode foil pair strips 14 are obtained one after another as the negative electrode foil fabric 12 advances, a large number of electrode foil pair strips 14 are stacked on the pedestal 7. The electrode foil pair strip 14 laminated on the base 7 is pressed in the thickness direction by the press roll 8. More specifically, each time a new electrode foil pair strip 14 is placed on the pedestal 7, pressing by the press roll 8 is performed. As a result, the newly supplied electrode foil pair strip 14 is integrated with the electrode foil pair strip 14 that has been supplied first and already stacked on the pedestal 7. It depends on the adhesiveness of the separator layer.

このようにして所定の枚数の電極箔ペア短冊１４が台座７の上に積層されプレスロール８による一体化がなされると、電極積層体１５が得られる。電極積層体１５は、電池における発電要素として機能するものである。電極積層体１５は通常、電池容器内に電解液とともに収納される。   In this way, when a predetermined number of electrode foil pair strips 14 are stacked on the pedestal 7 and integrated by the press roll 8, an electrode stack 15 is obtained. The electrode laminate 15 functions as a power generation element in the battery. The electrode laminate 15 is usually housed in the battery container together with the electrolyte.

一方、制御部２０は、負極欠陥検出部２２によって負極箔反物１２に欠陥を検出し、かつ欠陥がある負極箔反物１２の部分が負極反物切断機構６の手前側に達した際には、第１電極箔搬送機構を構成するところの貼り合わせロール５およびニップロール１６などの回転を停止させて正極箔短冊１３および負極箔反物１２の搬送動作を停止させる。この際、制御部２０は、搬送ローラ１７の回転を停止させて貼り合わせロール５への正極箔短冊１３の供給を停止させる。
そして、制御部２０は、アクチュエータを動作させることによって台座７を第１電極箔搬送機構の搬送路上から退避させ、また、補助台座２３を第１電極箔搬送機構の搬送路上に位置させる。 On the other hand, when the negative electrode defect detecting unit 22 detects a defect in the negative electrode foil fabric 12, and the part of the negative foil fabric 12 having a defect reaches the near side of the negative electrode workpiece cutting mechanism 6, the control unit 20 The rotation of the laminating roll 5 and the nip roll 16 constituting the one-electrode foil transport mechanism is stopped, and the transport operation of the positive foil strip 13 and the negative foil foil 12 is stopped. At this time, the control unit 20 stops the rotation of the transport roller 17 and stops the supply of the positive foil strip 13 to the bonding roll 5.
And the control part 20 retracts the base 7 from the conveyance path of a 1st electrode foil conveyance mechanism by operating an actuator, and also positions the auxiliary base 23 on the conveyance path of a 1st electrode foil conveyance mechanism.

つぎに、制御部２０は、貼り合わせロール５および前記ニップロール１６などを再び回転させて正極箔短冊１３および負極箔反物１２の搬送を再開し、また、搬送ローラ１７を回転させて正極箔短冊１３を貼り合わせロール５へ供給し始める。
これに伴って、欠陥がある負極箔反物１２および正極箔短冊１３は、補助台座２３上に搬送される。
なお、図２においては、補助台座２３が第１電極箔搬送機構の搬送路よりも高い位置に描かれているが、補助台座２３が第１電極箔搬送機構の搬送路上に配置された際には、補助台座２３上に保持された欠陥電極箔ペア短冊１４ａの高さに応じて上下方向の高さが調整されることは言うまでもない。 Next, the control unit 20 rotates the laminating roll 5 and the nip roll 16 again to restart the transport of the positive foil strip 13 and the negative foil foil 12, and rotates the transport roller 17 to rotate the positive foil strip 13. Begins to be supplied to the laminating roll 5.
Along with this, the defective negative foil fabric 12 and the positive foil strip 13 are conveyed onto the auxiliary pedestal 23.
In FIG. 2, the auxiliary pedestal 23 is depicted at a position higher than the conveyance path of the first electrode foil conveyance mechanism, but when the auxiliary pedestal 23 is disposed on the conveyance path of the first electrode foil conveyance mechanism. Needless to say, the height in the vertical direction is adjusted in accordance with the height of the defective electrode foil pair strip 14a held on the auxiliary pedestal 23.

欠陥がある負極箔反物１２および正極箔短冊１３が搬送されることによって正極箔短冊１３と次に位置する正極箔短冊１３との間の隙間が負極反物切断機構６に到達した際には、再び第１電極箔搬送機構の搬送動作が停止され、つまり、貼り合わせロール５およびニップロール１６などの回転が停止され、その後、負極反物切断機構６によって負極箔反物１２が幅方向に切断され、その後、正極箔短冊１３と欠陥がある負極箔短冊からなる切断された欠陥電極箔ペア短冊１４ａは、補助台座２３上に積層保持される。   When the gap between the positive foil strip 13 and the positive foil strip 13 located next by the transport of the defective negative foil strip 12 and the positive foil strip 13 reaches the negative fabric cut mechanism 6 again, The transport operation of the first electrode foil transport mechanism is stopped, that is, the rotation of the laminating roll 5 and the nip roll 16 is stopped, and then the negative electrode foil fabric object 12 is cut in the width direction by the negative electrode fabric object cutting mechanism 6, and then The cut defective electrode foil pair strip 14 a made up of the positive foil strip 13 and the defective negative foil strip is laminated and held on the auxiliary pedestal 23.

このように本実施例においては、欠陥電極箔ペア短冊１４ａが台座７の上に積層された欠陥がない電極箔ペア短冊１４に混じることがなく、したがって、台座７上では常に欠陥がない電極積層体１５が得られるものであり、電極積層体１５の歩留まりが向上し、したがって積層電池製造装置１の生産性が向上する。
また、廃棄されるのは、欠陥のある正極箔短冊１３と正極箔短冊１３と欠陥がある負極箔短冊からなる欠陥電極箔ペア短冊１４ａのみであって廃棄される材料も少なくすることができ、材料費も従来の積層体全部を廃棄する場合に比べて大幅に節約することができる。 As described above, in this embodiment, the defective electrode foil pair strips 14a are not mixed with the electrode foil pair strips 14 having no defects stacked on the pedestal 7, and therefore, the electrode stack having no defects always on the pedestal 7. The body 15 is obtained, the yield of the electrode laminate 15 is improved, and therefore the productivity of the multilayer battery manufacturing apparatus 1 is improved.
Moreover, only the defective electrode foil pair strip 14a consisting of the defective positive foil strip 13 and the positive foil strip 13 and the defective negative foil foil strip can be discarded, and the material discarded can be reduced. Material costs can also be saved significantly compared to discarding the entire conventional laminate.

つぎに制御部２０は、アクチュエータを動作させることによって補助台座２３を第１電極箔搬送機構の搬送路上から退避させ、また、台座７を第１電極箔搬送機構の搬送路上に位置させる。
その後、貼り合わせロール５およびニップロール１６などを再び回転させて正極箔短冊１３および負極箔反物１２の搬送を再開し、また、搬送ローラ１７を回転させて正極箔短冊１３を貼り合わせロール５へ供給し始める。 Next, the control unit 20 operates the actuator to retract the auxiliary pedestal 23 from the transport path of the first electrode foil transport mechanism, and positions the pedestal 7 on the transport path of the first electrode foil transport mechanism.
Thereafter, the laminating roll 5 and the nip roll 16 are rotated again to resume transport of the positive foil strip 13 and the negative foil foil 12, and the transport roller 17 is rotated to supply the positive foil strip 13 to the laminating roll 5. Begin to.

なお、上述した本実施の形態は単なる例示にすぎず、本発明を何ら限定するものではない。したがって本発明は当然に、その要旨を逸脱しない範囲内で種々の改良、変形が可能である。例えば、本形態では、貼り合わせロール５に対して、負極箔を反物状にて供給し、正極箔を短冊状にて供給することとした。しかしこれは、正負逆であってもよい。また、本形態では、台座７上で電極箔ペア短冊１４を押圧するプレス部材として、電極箔ペア短冊１４上を転がるプレスロール８を用いた。しかしこれに限らず、送り方向には移動せず平面状に電極箔ペア短冊１４を押圧するプレスパッドであってもよい。押圧のオンオフが可能であればよい。   In addition, this Embodiment mentioned above is only a mere illustration, and does not limit this invention at all. Therefore, the present invention can be variously improved and modified without departing from the scope of the invention. For example, in this embodiment, the negative electrode foil is supplied in the form of a fabric and the positive electrode foil is supplied in a strip shape to the bonding roll 5. However, this may be reversed. Moreover, in this form, the press roll 8 which rolls on the electrode foil pair strip 14 was used as a press member which presses the electrode foil pair strip 14 on the base 7. FIG. However, the present invention is not limited to this, and a press pad that presses the electrode foil pair strip 14 in a planar shape without moving in the feeding direction may be used. It is only necessary that the pressing can be turned on and off.

さらに、上述した本形態では、負極箔短冊の欠陥を、負極欠陥検出部２２によって負極箔反物１２の状態で検出するように構成したが、台座７および補助台座２３の位置を，負極反物切断機構６による切断位置から離れた位置、つまり負極箔短冊の搬送方向の幅より大きく離れた位置に配置して、負極反物切断機構６により切断された後の負極箔短冊の欠陥を負極欠陥検出部２２によって検出するように構成しても差し支えない。この場合、上述した本形態の方が負極反物切断機構６に近接して台座７を近接して配置することができるため、積層電池製造装置１を小型化できる。   Further, in the present embodiment described above, the defect of the negative electrode foil strip is configured to be detected in the state of the negative electrode foil fabric 12 by the negative electrode defect detector 22, but the positions of the pedestal 7 and the auxiliary pedestal 23 are determined based on the negative electrode fabric cut mechanism. The negative electrode foil strips that have been cut by the negative electrode fabric cut-off mechanism 6 are arranged at positions away from the cutting position by 6, that is, at positions far from the width in the conveying direction of the negative foil strips. It does not matter if it is configured to detect by. In this case, since the present embodiment described above can be disposed close to the negative electrode workpiece cut mechanism 6 and the pedestal 7 close to each other, the multilayer battery manufacturing apparatus 1 can be downsized.

１ 積層電池製造装置
２ 正極反物供給部
３ 負極反物供給部
４ 正極反物切断機構
５ 貼り合わせロール
６ 負極反物切断機構
７ 台座
８ プレスロール
１０ 正極箔反物
１２ 負極箔反物（第１電極箔反物）
１３ 正極箔短冊（第２電極箔短冊）
１４ 電極箔ペア短冊
１４ａ 欠陥電極箔ペア短冊
１５ 電極積層体
１６ ニップロール
１７ 搬送ローラ
２０ 制御部
２２ 負極欠陥検出部
２３ 補助台座 DESCRIPTION OF SYMBOLS 1 Stacked battery manufacturing apparatus 2 Positive electrode fabric supply part 3 Negative electrode fabric supply part 4 Positive electrode fabric cutting mechanism 5 Bonding roll 6 Negative electrode fabric cutting mechanism 7 Base 8 Press roll 10 Positive foil fabric 12 Negative foil fabric (first electrode foil fabric)
13 Positive foil strip (second electrode foil strip)
14 Electrode foil pair strips 14a Defective electrode foil pair strips 15 Electrode laminate 16 Nip roll 17 Transport roller 20 Control unit 22 Negative electrode defect detection unit 23 Auxiliary base

Claims (1)

第１電極箔短冊と第２電極箔短冊とが交互に積層された構造の積層電池を製造する積層電池製造装置であって、
第１電極箔反物をその長手方向に進行させて搬送する第１電極箔搬送機構と、
前記第１電極箔反物の上に、前記第２電極箔短冊を長手方向に対して順次並んで配置されるように搬送する第２電極箔搬送機構と、
前記第２電極箔短冊が配置された前記第１電極箔反物における前記第２電極箔短冊のない箇所を幅方向に切断することで、前記第１電極箔短冊と前記第２電極箔短冊とが１枚ずつ積層された電極箔ペア短冊とする切断機構と、
前記第１電極箔短冊の欠陥を検出する検出部と、
前記電極箔ペア短冊が積層される台座と、
前記検出部により欠陥を検出した前記第１電極箔短冊が積層された電極箔ペア短冊を載置する補助台座と、
前記台座もしくは前記補助台座のいずれかを前記第１電極箔搬送機構の搬送路上に位置させる台座転換機構と、
制御手段と、を備え、
前記制御手段は、前記検出部が前記第１電極箔短冊の欠陥を検出した際に、前記第１電極箔搬送機構による前記第１電極箔反物の搬送を停止させ、前記台座転換機構によって前記補助台座が前記第１電極箔搬送機構の搬送路上に位置するように制御することを特徴とする積層電池製造装置。 A laminated battery manufacturing apparatus for manufacturing a laminated battery having a structure in which first electrode foil strips and second electrode foil strips are alternately laminated,
A first electrode foil transport mechanism for transporting the first electrode foil fabric in the longitudinal direction;
A second electrode foil transport mechanism for transporting the second electrode foil strips so as to be sequentially arranged in the longitudinal direction on the first electrode foil fabric;
The first electrode foil strip and the second electrode foil strip are obtained by cutting a portion of the first electrode foil fabric in which the second electrode foil strip is disposed without the second electrode foil strip in the width direction. A cutting mechanism that makes a pair of electrode foil pairs stacked one by one,
A detection unit for detecting a defect in the first electrode foil strip;
A base on which the electrode foil pair strips are stacked;
An auxiliary pedestal on which the electrode foil pair strips on which the first electrode foil strips having been detected by the detection unit are stacked are placed;
A pedestal switching mechanism for positioning either the pedestal or the auxiliary pedestal on the transport path of the first electrode foil transport mechanism;
Control means,
When the detection unit detects a defect in the first electrode foil strip, the control means stops the conveyance of the first electrode foil fabric by the first electrode foil conveyance mechanism, and the auxiliary conversion mechanism supports the auxiliary An apparatus for manufacturing a laminated battery, wherein a pedestal is controlled to be positioned on a transport path of the first electrode foil transport mechanism.
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