JP2018133344A5 - Method for producing laminated electrode body, laminated electrode body and battery - Google Patents
Method for producing laminated electrode body, laminated electrode body and battery Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims description 38
- 238000005520 cutting process Methods 0.000 claims description 34
- 238000003475 lamination Methods 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 10
- 238000009413 insulation Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 230000002950 deficient Effects 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Description
この発明は、正極シート、セパレータ層及び負極シートを幾重かに積層してなる積層電極体の製造方法、積層電極体及び電池に関する。 The present invention relates to a method for manufacturing a laminated electrode body, a laminated electrode body, and a battery obtained by laminating several layers of a positive electrode sheet, a separator layer, and a negative electrode sheet.
この発明は、上記事情に鑑みてなされたものであって、その目的は、正極シートと負極シートを間にセパレータ層を介在させながら効率良く積層することを可能とし、積層電極体の製造時間を短縮することを可能とした積層電極体の製造方法、積層電極体及び電池を提供することにある。 The present invention has been made in view of the above circumstances, and the object thereof is to enable efficient lamination while interposing a separator layer between a positive electrode sheet and a negative electrode sheet, and to reduce the production time of a laminated electrode body. An object of the present invention is to provide a method for manufacturing a laminated electrode body, a laminated electrode body, and a battery that can be shortened.
上記目的を達成するために、請求項１に記載の発明は、矩形状で、一辺に正極側の露出部を有する複数の正極シートと、矩形状で、一辺に負極側の露出部を有する複数の負極シートとが、矩形状で、前記正極シート及び前記負極シートの少なくとも一方の電極表面に予め一体化されたセパレータ層を介して、交互に積層された積層電極体の製造方法であって、正極帯状シート及び負極帯状シートの少なくとも一方の電極表面にセパレータ層を形成した前記正極帯状シート及び前記負極帯状シートのうち、前記正極帯状シート又は前記負極帯状シートを裁断する第１の裁断工程と、裁断された正極シート又は負極シートを未裁断の前記負極帯状シート又は前記正極帯状シート上に前記セパレータ層を介在させて重ねて配置する工程と、未裁断の前記負極帯状シート又は前記正極帯状シートをそれに重ねて配置された前記正極シート又は前記負極シートの裁断隙間にて裁断することにより、重ねて配置された一対の前記正極シートと前記負極シートとを含むシートユニットを得る第２の裁断工程と、前記シートユニットを複数組積層しプレスすることにより積層電極体を得るプレス工程とを備えることを趣旨とする。 In order to achieve the above object, the invention described in claim 1 is a rectangular shape having a plurality of positive electrode sheets having a positive electrode side exposed portion on one side and a rectangular shape having a negative electrode side exposed portion on one side. The negative electrode sheet is a rectangular shape, and is a method for producing a laminated electrode body that is alternately laminated via a separator layer that is integrated in advance on at least one electrode surface of the positive electrode sheet and the negative electrode sheet, among the positive electrode strip sheet and the negative electrode sheet strip to form a separator layer on the positive electrode sheet strip and at least one electrode surface of the anode sheet strip, a first cutting step of cutting the cathode strip sheet or the negative electrode strip sheet, a step of the shredded positive electrode sheet or negative electrode sheet is interposed the separator layer to the negative electrode sheet strip or the cathode strip sheet of uncut before and after removal, the uncut By cutting serial at the negative electrode sheet strip or cutting gap of the positive electrode sheet or the negative electrode sheet The positive electrode sheet strip which are disposed so as to overlap it, including a pair of the positive electrode sheet which is disposed to overlap with the negative electrode sheet a second cutting step of obtaining a seat unit, wherein the sheet unit plural sets of laminated and spirit that obtain Bei and pressing to obtain a laminated electrode body by pressing.
上記発明の構成によれば、セパレータ層形成工程により、正極帯状シート及び負極帯状シートの少なくとも一方とセパレータ層とが予め一体化されることから、正極シートと負極シートを積層するときに、正極シート及び負極シートとセパレータ層との位置合わせが不要になる。
さらに請求項２に記載の発明は、請求項１に記載の積層電極体の製造方法であって、前記第１の裁断工程は、前記正極帯状シートまたは前記負極帯状シートに生じさせた、送り方向への引っ張り力を作用させながら裁断を行い、裁断面に生じるバリを前記送り方向に引き伸ばされた形態とすることを趣旨とする。
さらに請求項３に記載の発明は、請求項２に記載の積層電極体の製造方法であって、前記配置する工程は、裁断された前記正極シート又は前記負極シートを未裁断の前記負極帯状シート又は前記正極帯状シート上に前記セパレータ層を介在させて重ねて配置し、クランプローラにより送り出しながら間欠的にクランプするクランプ工程であり、前記第１の裁断工程の裁断を、前記クランプ工程での、前記クランプローラによる、前記正極帯状シートまたは前記負極帯状シートの間欠的なクランプのタイミングに同期して実施することを趣旨とする。
According to the configuration of the present invention, at least one of the positive electrode belt-like sheet and the negative electrode belt-like sheet and the separator layer are integrated in advance by the separator layer forming step. Therefore, when the positive electrode sheet and the negative electrode sheet are laminated, the positive electrode sheet In addition, alignment between the negative electrode sheet and the separator layer becomes unnecessary.
Furthermore, invention of Claim 2 is a manufacturing method of the laminated electrode body of Claim 1, Comprising: The feed direction which the said 1st cutting process produced in the said positive electrode strip sheet or the said negative electrode strip sheet The purpose is to perform cutting while applying a pulling force to the surface, so that the burr generated on the cut surface is stretched in the feeding direction.
Furthermore, the invention according to claim 3 is the method of manufacturing a laminated electrode body according to claim 2, wherein the step of arranging includes the cut negative electrode sheet or the negative electrode sheet that has not been cut. Alternatively, it is a clamping process in which the separator layer is disposed on the positive electrode belt-like sheet, and is clamped intermittently while being sent out by a clamp roller, and the cutting in the first cutting process is performed in the clamping process. It is intended to be executed in synchronization with the intermittent clamping timing of the positive electrode strip or the negative electrode strip by the clamp roller.
上記目的を達成するために、請求項４に記載の発明は、請求項３に記載の積層電極体の製造方法であって、前記第１の裁断工程は、前記クランプローラに向けて、前記正極帯状シートまたは前記負極帯状シートを送り出す送りローラによる第１の送り速度をＶ１とし、前記クランプローラによる第２の送り速度をＶ２としたとき、Ｖ１＜Ｖ２として、前記送りローラと前記クランプローラとの間で、前記正極帯状シートまたは前記負極帯状シートに前記送り方向への引っ張り力を生じさせることを趣旨とする。 To achieve the above object, an invention according to claim 4, a method for producing a laminated electrode body according to claim 3, wherein as the first cutting Engineering is toward the clamping roller, wherein a first feed speed of the feed roller for feeding the cathode strip sheet or the negative electrode strip sheet is V1, when the second feed speed by the clamping roller was V2, as V1 <V2, and the feed roller and the clamp roller The purpose is to generate a tensile force in the feeding direction on the positive electrode strip or the negative electrode strip .
上記発明の構成によれば、請求項４に記載の発明の作用に加え、送りローラによる第１の送り速度Ｖ１とクランプローラによる第２の送り速度Ｖ２との速度差により、正極帯状シートまたは負極帯状シートに送り方向への引っ張り力が作用して裁断が行われる。 According to the configuration of the invention described above, in addition to the action of the invention according to claim 4 , the positive belt-like sheet or the negative electrode is obtained by the speed difference between the first feed speed V1 by the feed roller and the second feed speed V2 by the clamp roller. Cutting is performed by applying a pulling force in the feeding direction to the belt-like sheet .
さらに請求項５に記載の発明は、請求項４に記載の積層電極体の製造方法であって、前記第２の裁断工程で得た前記シートユニットにおける、前記負極シートと前記正極シートの位置を検査する工程をさらに備え、前記第１の裁断工程は、得られた位置データに基づき、正極帯状シートについて、前記送り方向と直交する方向の基準値からのずれを前記正極帯状シートの繰り出し位置決めにフィードバック制御すると共に、前記送り方向の基準値からのずれを、正極帯状シートの縦位置決めと前記第１の送り速度Ｖ１と前記第２の送り速度Ｖ２の速度差にフィードバック制御することを趣旨とする。 Furthermore, the invention according to claim 5 is the method for manufacturing the laminated electrode body according to claim 4, wherein the positions of the negative electrode sheet and the positive electrode sheet in the sheet unit obtained in the second cutting step are determined. A step of inspecting, wherein the first cutting step is based on the obtained position data, and the deviation from the reference value in the direction orthogonal to the feeding direction is determined as the positive electrode belt sheet feeding position on the positive electrode belt sheet. The purpose of the feedback control is to feedback control the deviation from the reference value in the feed direction to the vertical positioning of the positive belt-like sheet and the speed difference between the first feed speed V1 and the second feed speed V2. .
さらに請求項６に記載の発明は、請求項１〜請求項５のいずれか１項に記載の積層電極体の製造方法であって、前記プレス工程に先立ち、このプレス工程に用いる前記シートユニットを、収容ラックの、手前よりも奥側が低位とされた傾いた棚の上に、順に積層して収容する積層工程と、を備えることを趣旨とする。 Furthermore, the invention according to claim 6 is the method for manufacturing a laminated electrode body according to any one of claims 1 to 5, wherein the sheet unit used in the pressing step is provided prior to the pressing step. And a stacking step of stacking and storing in order on a tilted shelf whose back side is lower than the front of the storage rack.
さらに請求項７に記載の発明は、請求項１〜請求項６のいずれか１項に記載の積層電極体の製造方法であって、前記第２の裁断工程で得た前記シートユニットにおける、前記負極シートと前記正極シートの位置を検査し、当該シートユニットの当該負極シートと当該正極シートの前記位置の良否を判定する工程と、を備えることを趣旨とする。 Furthermore, the invention according to claim 7 is the method for manufacturing a laminated electrode body according to any one of claims 1 to 6, wherein the sheet unit obtained in the second cutting step is Inspecting the positions of the negative electrode sheet and the positive electrode sheet, and determining whether the position of the negative electrode sheet and the positive electrode sheet of the sheet unit is good.
さらに請求項７に記載の発明は、請求項１〜請求項６のいずれか１項に記載の積層電極体の製造方法であって、前記第２の裁断工程で得た前記シートユニットにおける、前記負極シートと前記正極シートの位置を検査し、当該シートユニットの当該負極シートと当該正極シートの前記位置の良否を判定する工程と、を備えることを趣旨とする。 Furthermore, the invention according to claim 7 is the method for manufacturing a laminated electrode body according to any one of claims 1 to 6, wherein the sheet unit obtained in the second cutting step is Inspecting the positions of the negative electrode sheet and the positive electrode sheet, and determining whether the position of the negative electrode sheet and the positive electrode sheet of the sheet unit is good.
さらに請求項８に記載の発明は、請求項１〜請求項７のいずれか１項に記載の積層電極体の製造方法であって、前記第２の裁断工程で得た前記シートユニットの前記負極シートと前記正極シートとの絶縁を検査し、当該シートユニットの絶縁の良否を判定する工程と、を備えることを趣旨とする。 Furthermore, the invention according to claim 8 is the method for manufacturing a laminated electrode body according to any one of claims 1 to 7, wherein the negative electrode of the sheet unit obtained in the second cutting step. And inspecting insulation between the sheet and the positive electrode sheet, and determining whether the insulation of the sheet unit is good.
さらに請求項９に記載の発明は、請求項７または請求項８に記載の積層電極体の製造方法であって、不良と判定された前記シートユニットを、前記プレス工程に用いる前記シートユニットに含めない分別工程と、を備えることを趣旨とする。 Furthermore, the invention according to claim 9 is the method for manufacturing the laminated electrode body according to claim 7 or 8, wherein the sheet unit determined to be defective is included in the sheet unit used in the pressing step. The purpose is to provide no separation step.
さらに請求項１０に記載の発明は、請求項１〜請求項９のいずれか１項に記載の積層電極体の製造方法であって、前記プレスで得た前記積層電極体の外形寸法を検査し、当該記積層電極体の当該外形寸法の良否を判定する工程と、を備えることを趣旨とする。 Furthermore, the invention described in claim 10 is the method for manufacturing a laminated electrode body according to any one of claims 1 to 9, wherein the outer dimensions of the laminated electrode body obtained by the press are inspected. And a step of determining the quality of the outer dimensions of the laminated electrode body.
さらに請求項１１に記載の発明は、請求項１〜請求項１０のいずれか１項に記載の積層電極体の製造方法であって、前記プレスで得た前記積層電極体の絶縁を検査し、当該積層電極体の絶縁の良否を判定する工程と、を備えることを趣旨とする。 Furthermore, the invention according to claim 11 is the method for manufacturing a laminated electrode body according to any one of claims 1 to 10, wherein the insulation of the laminated electrode body obtained by the press is inspected, And a step of determining whether the laminated electrode body is insulated or not.
また、請求項１２に記載の発明は、矩形状で、一辺に正極側の露出部を有する複数の正極シートと、矩形状で、一辺に負極側の露出部を有する複数の負極シートとが、矩形状で、前記正極シート及び前記負極シートの少なくとも一方の電極表面に予め一体化されたセパレータ層を介して、交互に積層された積層電極体であることを趣旨とする。 The invention according to claim 12 is a rectangular shape, a plurality of positive electrode sheets having a positive electrode side exposed portion on one side, and a plurality of negative electrode sheets having a rectangular shape and a negative electrode side exposed portion on one side, It is intended to be a laminated electrode body which is rectangular and is alternately laminated via a separator layer integrated in advance on at least one electrode surface of the positive electrode sheet and the negative electrode sheet.
さらに請求項１３に記載の発明は、請求項１２に記載の積層電極体であって、一対の前記正極シートと前記負極シートとが、上記正極シート及び上記負極シートの少なくとも一方の電極表面に予め一体化されたセパレータ層を介して積層されたシートユニットを、複数組有し、上記複数組のシートユニットが積層されたことを趣旨とする。 Furthermore, the invention according to claim 13 is the laminated electrode body according to claim 12, wherein the pair of the positive electrode sheet and the negative electrode sheet are previously formed on at least one electrode surface of the positive electrode sheet and the negative electrode sheet. A plurality of sheet units stacked through an integrated separator layer are provided, and the plurality of sheet units are stacked.
さらに請求項１４に記載の発明は、請求項１２または請求項１３に記載の積層電極体であって、前記正極シートの前記正極側の露出部に直交する二辺間の長さ（Ｌ２）が、前記負極シートの前記負極側の露出部に直交する二辺間の長さ（Ｌ１＋Ｌ２）よりも小さく、前記セパレータ層の前記正極側の露出部に直交する二辺間の長さは、前記正極シートの前記二辺間の長さ（Ｌ２）または前記負極シートの前記二辺間の長さ（Ｌ１＋Ｌ２）に等しく、積層方向に見たとき、前記正極シートの前記正極側の露出部に直交する二辺が、前記負極シートの前記負極側の露出部に直交する二辺の内側に位置する形態に配置されていることを趣旨とする。 Furthermore, the invention according to claim 14 is the laminated electrode body according to claim 12 or claim 13, wherein a length (L2) between two sides perpendicular to the exposed portion on the positive electrode side of the positive electrode sheet is The length between two sides perpendicular to the exposed portion on the positive electrode side of the separator layer is smaller than the length (L1 + L2) between two sides orthogonal to the exposed portion on the negative electrode side of the negative electrode sheet. It is equal to the length (L2) between the two sides of the sheet or the length (L1 + L2) between the two sides of the negative electrode sheet, and is orthogonal to the exposed portion of the positive electrode sheet on the positive electrode side when viewed in the stacking direction. It is intended that the two sides are arranged in a form located inside two sides orthogonal to the exposed portion on the negative electrode side of the negative electrode sheet.
さらに請求項１５に記載の発明は、請求項１４に記載の積層電極体であって、前記正極シートのうち、前記正極側の露出部に直交する二辺をなす裁断面に生じているバリが、外側に向けて伸ばされた形態を有することを趣旨とする。 Furthermore, the invention according to claim 15 is the laminated electrode body according to claim 14, wherein, in the positive electrode sheet, burrs generated in a cut surface that forms two sides orthogonal to the exposed portion on the positive electrode side are formed. It is intended to have a form extended toward the outside.
さらに請求項１６に記載の発明は、電池ケース内に、請求項１２〜請求項１５のいずれか１項に記載の積層電極体が収容された電池であることを趣旨とする。 Furthermore, the invention described in claim 16 is a battery in which the laminated electrode body according to any one of claims 12 to 15 is accommodated in a battery case.
請求項２に記載の発明によれば、請求項１に記載の発明の効果に加え、正極帯状シートまたは負極帯状シートの裁断面では、その厚さ方向におけるバリの発生を抑えることができる。 According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, it is possible to suppress the occurrence of burrs in the thickness direction in the cut surface of the positive electrode strip or negative electrode strip .
図１４に、裁断深さ比（Ｄ／Ｔ）と送り速度比（Ｖ２／Ｖ１）に対する、正極帯状シート２の裁断の良否の関係をグラフにより示す。このグラフから、裁断深さ比（Ｄ／Ｔ）が「０.５〜０.９」、送り速度比（Ｖ２／Ｖ１）が「１.０１〜１.２５」となる領域で、裁断が良好となることがわかる。 FIG. 14 is a graph showing the relationship between the cutting depth ratio (D / T) and the feeding speed ratio (V2 / V1) in terms of the quality of the cutting of the positive electrode belt 2. From this graph, cutting depth ratio (D / T) is "0.5 to 0.9", in the region where the feed rate ratio (V2 / V1) becomes "1.01 to 1.25", good cut is It turns out that it becomes.
この実施形態では、クランプローラ２５の回転時に、一方のローラ２５Ａの切欠き２５ａによりクランプローラ２５を一時的にアンクランプな状態とすることにより、第１の送り速度Ｖ１と第２の送り速度Ｖ２との速度差（Ｖ２−Ｖ１）を吸収するので、その速度差（Ｖ２−Ｖ１）が正極帯状シート２の送りや裁断に悪影響を与えることがない。このため、正極帯状シート２の送りや裁断につき、速度差（Ｖ２−Ｖ１）に起因する不具合、例えば、正極シート２Ａにおける皺の発生等を抑えることができる。 In this embodiment, during the rotation of the clamp roller 25, the feeding speed of the clamp roller 25 by the unclamped state to temporarily by notches 25a, a first feed speed V1 of the second one of the rollers 25A Since the speed difference (V2−V1) from V2 is absorbed, the speed difference (V2−V1) does not adversely affect the feeding and cutting of the positive electrode belt 2. For this reason, it is possible to suppress problems caused by the speed difference (V2−V1), for example, generation of wrinkles in the positive electrode sheet 2A, when the positive electrode belt-like sheet 2 is fed or cut.
Claims (16)
矩形状で、一辺に負極側の露出部を有する複数の負極シートとが、
矩形状で、前記正極シート及び前記負極シートの少なくとも一方の電極表面に予め一体化されたセパレータ層を介して、交互に積層された
積層電極体の製造方法であって、
正極帯状シート及び負極帯状シートの少なくとも一方の電極表面にセパレータ層を形成した前記正極帯状シート及び前記負極帯状シートのうち、前記正極帯状シート又は前記負極帯状シートを裁断する第１の裁断工程と、
裁断された正極シート又は負極シートを未裁断の前記負極帯状シート又は前記正極帯状シート上に前記セパレータ層を介在させて重ねて配置する工程と、
未裁断の前記負極帯状シート又は前記正極帯状シートをそれに重ねて配置された前記正極シート又は前記負極シートの裁断隙間にて裁断することにより、重ねて配置された一対の前記正極シートと前記負極シートとを含むシートユニットを得る第２の裁断工程と、
前記シートユニットを複数組積層しプレスすることにより積層電極体を得るプレス工程と、を備える
積層電極体の製造方法。 A plurality of positive electrode sheets having a rectangular shape and an exposed portion on the positive electrode side on one side;
A plurality of negative electrode sheets having a rectangular shape and having exposed portions on the negative electrode side on one side,
In a rectangular shape, the positive electrode sheet and the negative electrode sheet were alternately stacked via a separator layer integrated in advance on the surface of at least one of the electrodes.
A method for producing a laminated electrode body,
Among the positive electrode strip sheet and the negative electrode sheet strip to form a separator layer on the positive electrode sheet strip and at least one electrode surface of the anode sheet strip, a first cutting step of cutting the cathode strip sheet or the negative electrode strip sheet,
A step of placing the cut positive electrode sheet or negative electrode sheet on the uncut negative electrode strip or positive electrode strip with the separator layer interposed therebetween, and
By cutting at uncut of the negative electrode sheet strip or cutting gap of the positive electrode sheet or the negative electrode sheet The positive electrode sheet strip which are disposed so as to overlap it, the pair of the positive electrode sheet arranged to overlap with the negative electrode sheet A second cutting step of obtaining a sheet unit including:
Method for producing a pressing process and, Bei obtain <br/> laminated electrode body to obtain a laminated electrode body by pressing a plurality of sets laminating the sheet unit.
前記第１の裁断工程は、 The first cutting step includes
前記正極帯状シートまたは前記負極帯状シートに生じさせた、送り方向への引っ張り力を作用させながら裁断を行い、 Performing cutting while applying a tensile force in the feeding direction generated in the positive electrode belt-like sheet or the negative electrode belt-like sheet,
裁断面に生じるバリを前記送り方向に引き伸ばされた形態とする The burr generated on the cut surface is extended in the feed direction.
積層電極体の製造方法。A method for producing a laminated electrode body.
前記配置する工程は、 The step of arranging includes
裁断された前記正極シート又は前記負極シートを未裁断の前記負極帯状シート又は前記正極帯状シート上に前記セパレータ層を介在させて重ねて配置し、クランプローラにより送り出しながら間欠的にクランプするクランプ工程であり、 In the clamping process, the cut positive electrode sheet or the negative electrode sheet is placed on the uncut negative electrode belt sheet or the positive electrode belt sheet with the separator layer interposed therebetween, and is clamped intermittently while being fed out by a clamp roller. Yes,
前記第１の裁断工程の裁断を、 Cutting in the first cutting step,
前記クランプ工程での、前記クランプローラによる、前記正極帯状シートまたは前記負極帯状シートの間欠的なクランプのタイミングに同期して実施する In synchronization with the intermittent clamping timing of the positive electrode strip or the negative electrode strip by the clamp roller in the clamping step.
積層電極体の製造方法。A method for producing a laminated electrode body.
前記第１の裁断工程は、
前記クランプローラに向けて、前記正極帯状シートまたは前記負極帯状シートを送り出す送りローラによる第１の送り速度をＶ１とし、
前記クランプローラによる第２の送り速度をＶ２としたとき、
Ｖ１＜Ｖ２として、
前記送りローラと前記クランプローラとの間で、前記正極帯状シートまたは前記負極帯状シートに前記送り方向への引っ張り力を生じさせる
積層電極体の製造方法。 It is a manufacturing method of the lamination electrode object according to claim 3,
As the first cutting factory is,
A first feed speed by a feed roller that feeds the positive electrode strip or the negative electrode strip toward the clamp roller is V1,
When the second feed speed by the clamp roller is V2 ,
As V1 <V2,
The method for producing a laminated electrode body , wherein a tensile force in the feed direction is generated between the feed roller and the clamp roller on the positive electrode strip or the negative electrode strip .
前記第２の裁断工程で得た前記シートユニットにおける、前記負極シートと前記正極シートの位置を検査する工程をさらに備え、 In the sheet unit obtained in the second cutting step, further comprising the step of inspecting the position of the negative electrode sheet and the positive electrode sheet,
前記第１の裁断工程は、 The first cutting step includes
得られた位置データに基づき、正極帯状シートについて、 Based on the obtained position data,
前記送り方向と直交する方向の基準値からのずれを前記正極帯状シートの繰り出し位置決めにフィードバック制御すると共に、 A feedback control of the deviation from the reference value in the direction orthogonal to the feed direction to the feed positioning of the positive electrode belt-like sheet,
前記送り方向の基準値からのずれを、正極帯状シートの縦位置決めと前記第１の送り速度Ｖ１と前記第２の送り速度Ｖ２の速度差にフィードバック制御する The deviation from the reference value in the feed direction is feedback-controlled to the vertical positioning of the positive belt-like sheet and the speed difference between the first feed speed V1 and the second feed speed V2.
積層電極体の製造方法。A method for producing a laminated electrode body.
前記プレス工程に先立ち、このプレス工程に用いる前記シートユニットを、収容ラックの、手前よりも奥側が低位とされた傾いた棚の上に、順に積層して収容する積層工程と、を備える Prior to the pressing step, the sheet unit used in the pressing step includes a stacking step of stacking and storing the sheet unit on an inclined shelf whose back side is lower than the front side of the storage rack.
積層電極体の製造方法。A method for producing a laminated electrode body.
前記第２の裁断工程で得た前記シートユニットにおける、前記負極シートと前記正極シートの位置を検査し、当該シートユニットの当該負極シートと当該正極シートの前記位置の良否を判定する工程と、を備える Inspecting the positions of the negative electrode sheet and the positive electrode sheet in the sheet unit obtained in the second cutting step, and determining whether the position of the negative electrode sheet and the positive electrode sheet of the sheet unit is good. Prepare
積層電極体の製造方法。A method for producing a laminated electrode body.
前記第２の裁断工程で得た前記シートユニットの前記負極シートと前記正極シートとの絶縁を検査し、当該シートユニットの絶縁の良否を判定する工程と、を備える And inspecting insulation between the negative electrode sheet and the positive electrode sheet of the sheet unit obtained in the second cutting step, and determining whether the insulation of the sheet unit is good or bad.
積層電極体の製造方法。A method for producing a laminated electrode body.
不良と判定された前記シートユニットを、前記プレス工程に用いる前記シートユニットに含めない分別工程と、を備える A separation step in which the sheet unit determined to be defective is not included in the sheet unit used in the pressing step.
積層電極体の製造方法。A method for producing a laminated electrode body.
前記プレスで得た前記積層電極体の外形寸法を検査し、当該記積層電極体の当該外形寸法の良否を判定する工程と、を備える Inspecting the outer dimensions of the multilayer electrode body obtained by the press, and determining whether the outer dimensions of the multilayer electrode body are good or bad.
積層電極体の製造方法。A method for producing a laminated electrode body.
前記プレスで得た前記積層電極体の絶縁を検査し、当該積層電極体の絶縁の良否を判定する工程と、を備える A step of inspecting the insulation of the laminated electrode body obtained by the press and determining the quality of the insulation of the laminated electrode body.
積層電極体の製造方法。A method for producing a laminated electrode body.
矩形状で、一辺に負極側の露出部を有する複数の負極シートとが、 A plurality of negative electrode sheets having a rectangular shape and having exposed portions on the negative electrode side on one side,
矩形状で、前記正極シート及び前記負極シートの少なくとも一方の電極表面に予め一体化されたセパレータ層を介して、交互に積層された In a rectangular shape, the positive electrode sheet and the negative electrode sheet were alternately stacked via a separator layer integrated in advance on the surface of at least one of the electrodes.
積層電極体。Laminated electrode body.
一対の前記正極シートと前記負極シートとが、上記正極シート及び上記負極シートの少なくとも一方の電極表面に予め一体化されたセパレータ層を介して積層されたシートユニットを、複数組有し、 A pair of the positive electrode sheet and the negative electrode sheet have a plurality of sheet units laminated via a separator layer integrated in advance on at least one electrode surface of the positive electrode sheet and the negative electrode sheet,
上記複数組のシートユニットが積層された Multiple sets of sheet units are stacked
積層電極体。Laminated electrode body.
前記正極シートの前記正極側の露出部に直交する二辺間の長さ（Ｌ２）が、 The length (L2) between two sides orthogonal to the exposed portion on the positive electrode side of the positive electrode sheet is
前記負極シートの前記負極側の露出部に直交する二辺間の長さ（Ｌ１＋Ｌ２）よりも小さく、 Less than the length (L1 + L2) between two sides orthogonal to the exposed portion on the negative electrode side of the negative electrode sheet,
前記セパレータ層の前記正極側の露出部に直交する二辺間の長さは、前記正極シートの前記二辺間の長さ（Ｌ２）または前記負極シートの前記二辺間の長さ（Ｌ１＋Ｌ２）に等しく、 The length between two sides perpendicular to the exposed portion on the positive electrode side of the separator layer is the length between the two sides of the positive electrode sheet (L2) or the length between the two sides of the negative electrode sheet (L1 + L2). Equal to
積層方向に見たとき、 When viewed in the stacking direction,
前記正極シートの前記正極側の露出部に直交する二辺が、前記負極シートの前記負極側の露出部に直交する二辺の内側に位置する形態に配置されている Two sides of the positive electrode sheet that are orthogonal to the exposed portion on the positive electrode side are arranged in a form located inside two sides that are orthogonal to the exposed portion of the negative electrode sheet on the negative electrode side.
積層電極体。Laminated electrode body.
前記正極シートのうち、前記正極側の露出部に直交する二辺をなす裁断面に生じているバリが、外側に向けて伸ばされた形態を有する Of the positive electrode sheet, a burr generated in a cut surface that forms two sides orthogonal to the exposed portion on the positive electrode side has a form extended outward.
積層電極体。Laminated electrode body.
電池。battery.
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