JP2009234788A - Electrode winding device - Google Patents

Electrode winding device Download PDF

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JP2009234788A
JP2009234788A JP2008087006A JP2008087006A JP2009234788A JP 2009234788 A JP2009234788 A JP 2009234788A JP 2008087006 A JP2008087006 A JP 2008087006A JP 2008087006 A JP2008087006 A JP 2008087006A JP 2009234788 A JP2009234788 A JP 2009234788A
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plates
plate
axis
pair
electrode
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JP4905400B2 (en
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Mitsuo Kogo
美津雄 向後
Yoshihiko Ohashi
良彦 大橋
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TDK 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

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electrode winding device capable of mutually winding an electrode sheet by uniform tension in both-end bending part of the major axis. <P>SOLUTION: This electrode winding device 100 includes a rotary shaft 3, a pair of plates 10 and 11 mutually oppositely arranged by sandwiching the axis (a) of the rotary shaft 3 and respectively extending in the axis (a) direction of the rotary shaft 3, and a plate fixing part 20 fixed to the rotary shaft 3 and capable of respectively fixing the pair of plates 10 and 11 to an optional position in the vertical direction (the ±Y direction) to the axis (a) of the rotary shaft 3 in the plane direction of the plates 10 and 11. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、電極の巻回装置に関する。   The present invention relates to an electrode winding apparatus.

電極層とセパレータ層との積層体である電極シートを巻回したいわゆる巻回型の電気化学デバイスが知られている。特に薄型の電気化学デバイスを実現するためには、巻回軸に垂直な断面が円形で無く扁平とされた平型の巻回型電気化学デバイスが好適である。そして、このような平型の巻回型電気化学デバイスを製造する際に、この電極シートを迅速に巻回するための電極巻回装置が知られている（例えば、特許文献１参照）。この電極巻回装置は、２枚の板からなる巻き軸を軸周りに回転可能としたものであり、巻き軸の周りに電極シートを巻回することにより、平型の巻回型電気化学デバイスを容易に得ることができる。
特開２００７−２２７４０号公報 A so-called wound-type electrochemical device in which an electrode sheet that is a laminate of an electrode layer and a separator layer is wound is known. In particular, in order to realize a thin electrochemical device, a flat wound electrochemical device in which the cross section perpendicular to the winding axis is not circular but flat is suitable. And when manufacturing such a flat winding type electrochemical device, the electrode winding apparatus for winding this electrode sheet rapidly is known (for example, refer patent document 1). The electrode winding apparatus is configured to rotate a winding shaft made of two plates around an axis, and by winding an electrode sheet around the winding shaft, a flat wound electrochemical device Can be easily obtained.
JP 2007-22740 A

ところで、電気化学デバイスにおいては、用途等によって、巻き軸の幅、すなわち、巻き軸の長軸の長さを多数設定する必要がある。したがって、１つの電極巻回装置において、巻き軸の幅を変更し、それぞれの巻き軸の幅で巻回を行うこととなる。   By the way, in an electrochemical device, it is necessary to set many widths of the winding axis, that is, the length of the major axis of the winding axis, depending on the application. Therefore, in one electrode winding device, the width of the winding shaft is changed, and winding is performed with the width of each winding shaft.

しかしながら、従来技術の電極巻回装置では、このように巻き軸の幅を変えた場合、電極シートを巻回してなる巻回体の長軸の両端に存在する２つの屈曲部において、巻回により生ずる張力が互いに均等にならない場合が多かった。２つの屈曲部の張力が均等でない場合、電極の積層密度に差が生じてしまい、充放電を繰り返すうちに劣化が生じやすくなる傾向がある。   However, in the electrode winding apparatus of the prior art, when the width of the winding shaft is changed in this way, at the two bent portions existing at both ends of the long axis of the wound body formed by winding the electrode sheet, In many cases, the resulting tensions were not equal to each other. When the tension of the two bent portions is not uniform, a difference occurs in the lamination density of the electrodes, and there is a tendency that deterioration is likely to occur while charging and discharging are repeated.

本発明は上記課題に鑑みてなされたものであり、長軸の両端の屈曲部において互いに均等な張力で電極シートを巻回することのできる電極巻回装置を提供することを目的とする。   The present invention has been made in view of the above problems, and an object of the present invention is to provide an electrode winding apparatus capable of winding an electrode sheet with equal tension to each other at bent portions at both ends of a long axis.

本発明に係る電極巻回装置は、回転軸と、回転軸の軸線を挟んで互いに対向するように配置され回転軸の軸線方向にそれぞれ伸びる一対の板と、板固定部とを備える。板固定部は、回転軸に固定され、一対の板を、板の平面方向かつ回転軸の軸線に対して垂直な方向における任意の位置にそれぞれ固定可能である。   The electrode winding apparatus according to the present invention includes a rotating shaft, a pair of plates that are arranged to face each other across the axis of the rotating shaft and extend in the axial direction of the rotating shaft, and a plate fixing portion. The plate fixing portion is fixed to the rotating shaft, and can fix the pair of plates at arbitrary positions in the plane direction of the plate and in the direction perpendicular to the axis of the rotating shaft.

本発明によれば、板固定部により一対の板のそれぞれが、板の平面方向かつ回転軸の軸線に対して垂直な方向における任意の位置に固定可能である。したがって、一対の板により形成される巻き軸の幅を変更したい場合に、一対の板の両方を、巻き軸の幅を広げる方向または狭める方向にそれぞれ移動させることができる。これにより、どのような巻き軸の幅であっても、一対の板により形成される巻き軸の中心軸線と、回転軸の軸線とを一致させることができる。したがって、巻き軸の幅に関わらず、互いに均等な張力で電極を巻回することができる。   According to the present invention, each of the pair of plates can be fixed at an arbitrary position in the plane direction of the plate and in the direction perpendicular to the axis of the rotation axis by the plate fixing portion. Therefore, when it is desired to change the width of the winding shaft formed by the pair of plates, both of the pair of plates can be moved in the direction of increasing or decreasing the width of the winding shaft. Thereby, whatever the width of the winding shaft, the central axis of the winding shaft formed by the pair of plates can coincide with the axis of the rotation shaft. Therefore, regardless of the width of the winding shaft, the electrodes can be wound with a uniform tension.

ここで、板固定部は、一対の板の軸線方向の一端部同士を厚み方向から挟持することが好ましい。   Here, it is preferable that the plate fixing portion sandwiches one end portions of the pair of plates in the axial direction from the thickness direction.

厚み方向から一対の板の一端同士を挟持することによって、固定時に一対の板を十分に固定できる一方、固定解除時における一対の板のそれぞれ移動動作が迅速かつ容易に行える。また、一対の板が挟持された状態で、一対の板の間に電極シートの端部を挟むと、電極シートの端部が一対の板により挟持され、これにより、電極シートの端部を、一対の板により形成される巻き軸に容易に固定できる。したがって、巻回工程を簡単化することができる。   By sandwiching one end of the pair of plates from the thickness direction, the pair of plates can be sufficiently fixed at the time of fixing, and the moving operation of the pair of plates at the time of releasing the fixing can be performed quickly and easily. Further, when the end portion of the electrode sheet is sandwiched between the pair of plates in a state where the pair of plates are sandwiched, the end portion of the electrode sheet is sandwiched by the pair of plates. It can be easily fixed to a winding shaft formed by a plate. Therefore, the winding process can be simplified.

また、一方の板は、板固定部に挟持される側とは反対側において、他方の板よりも軸線方向に突出していることが好ましい。   Moreover, it is preferable that one board protrudes in an axial direction rather than the other board in the opposite side to the side clamped by the board fixing | fixed part.

これによれば、一方の前記板の突出部を利用して容易に、板と板との間に隙間を生じさせることができる。したがって、巻回前に、板と板との間に電極の端部を差し込んで電極シートの端部を固定することが容易である。   According to this, a clearance gap can be produced easily between a board | plates using the protrusion part of one said board. Therefore, it is easy to fix the end of the electrode sheet by inserting the end of the electrode between the plates before winding.

さらに、少なくとも一方の板に、巻回される電極シートの側面を当接させる電極シート位置決め部が設けられていることが好ましい。   Furthermore, it is preferable that the electrode sheet positioning part which contacts the side surface of the electrode sheet wound is provided in at least one board.

これにより、電極シートを巻回させる際に、電極シートの位置を所定の位置に定めることが容易となり、巻回体のバラツキをより低減できる。   Thereby, when winding an electrode sheet, it becomes easy to set the position of an electrode sheet to a predetermined position, and the variation of a winding body can be reduced more.

本発明によれば、長軸の両端の屈曲部において互いに均等な張力で電極シートを巻回することのできる電極巻回装置が提供される。   ADVANTAGE OF THE INVENTION According to this invention, the electrode winding apparatus which can wind an electrode sheet with equal tension | tensile_strength mutually in the bending part of the both ends of a long axis is provided.

以下、図１〜４を参照しながら、本発明の好適な実施形態について詳細に説明する。なお、図面の説明において、同一または相当要素には同一の符号を付し、重複する説明は省略する。また、各図面の寸法比率は、必ずしも実際の寸法比率とは一致していない。   Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. In the description of the drawings, the same or corresponding elements are denoted by the same reference numerals, and redundant description is omitted. In addition, the dimensional ratio in each drawing does not necessarily match the actual dimensional ratio.

（第１実施形態）
本実施形態に係る電極巻回装置１００は、主として、架台１、支持板２、回転軸３、板固定部２０、板１０、１１、を主として備える。 (First embodiment)
The electrode winding apparatus 100 according to the present embodiment mainly includes a gantry 1, a support plate 2, a rotating shaft 3, a plate fixing unit 20, and plates 10 and 11.

架台１は略水平（図のＸ方向）に配置され、支持板２は架台１の表面に架台１に対して略垂直に固定されている。支持板２には、回転軸３が貫通配置されており、回転軸３は、支持板２の両側に配置された軸受け４ａ、４ｂにより、Ｙ方向に沿う軸線ａ周りを回転可能に支持板２に支持されている。軸受け４ａ、４ｂは、ボルト４ｃにより互いに固定されている。   The gantry 1 is arranged substantially horizontally (X direction in the figure), and the support plate 2 is fixed to the surface of the gantry 1 substantially perpendicular to the gantry 1. A rotation shaft 3 is disposed through the support plate 2, and the rotation shaft 3 can be rotated around an axis a along the Y direction by bearings 4 a and 4 b disposed on both sides of the support plate 2. It is supported by. The bearings 4a and 4b are fixed to each other by a bolt 4c.

回転軸３の一端側（図１の右側）には、回転軸３と直交するように腕木５ａの一端部が固定されており、腕木５ａの他端部にはハンドル５ｂが固定されている。   One end of the arm 5a is fixed to one end of the rotating shaft 3 (right side in FIG. 1) so as to be orthogonal to the rotating shaft 3, and a handle 5b is fixed to the other end of the arm 5a.

回転軸３の他端側（図２の左側）には、台座６が固定されている。具体的には、台座６は、回転軸３の他端部を受け入れる孔６ａを有している。回転軸３の他端側の端部には、図２に示すように、平面部を形成する切欠３ａが設けられており、台座６にねじ込まれたボルト１４の先端が回転軸の切欠３ａと当接することにより、台座６が回転軸３に対して固定され、ハンドル５ｂの回転によって、台座６も回転軸３の軸線ａ周りに回転されることとなる。   A pedestal 6 is fixed to the other end side of the rotating shaft 3 (left side in FIG. 2). Specifically, the pedestal 6 has a hole 6 a that receives the other end of the rotating shaft 3. As shown in FIG. 2, a notch 3a that forms a flat surface is provided at the other end of the rotating shaft 3, and the tip of the bolt 14 screwed into the pedestal 6 is connected to the notch 3a of the rotating shaft. By abutting, the base 6 is fixed to the rotary shaft 3, and the base 6 is also rotated around the axis a of the rotary shaft 3 by the rotation of the handle 5 b.

台座６は、図１に示すように、回転軸３の軸線ａと平行な面６ｂを有する。台座６の面６ｂ上には、一対の板１０、１１が互いに対向するように重ねられて配置されている。図２に示すように、板１０及び板１１は、いずれも、軸線ａ方向を長手方向とする略矩形状である。図１に示すように、板１０及び板１１のそれぞれの長手方向の一端部１０ａ，１１ａ（図１の右側）が台座６の面６ｂ上に配置されている。板１０、１１の厚みは特に限定されないが、例えば、０．１〜１ｍｍとすることができる。また、板１０、１１のＹ軸方向の長さは、例えば、３０〜１００ｍｍ程度、Ｘ軸方向の幅は、例えば、５〜３０ｍｍ程度とすることができる。特に、図２に示すように、一対の板１０、１１の内の一方の板のＹ方向の長さと、他方の板のＹ方向の長さとを互いに異ならせること等により、板１０及び板１１の台座６とは反対側（図２の左側）の端部１０ｂ、１１ｂにおいて、板１０と板１１のいずれかが他方に比べて軸線ａ方向に突出していることが好ましい。なお、図２においては、板１１の端部１１ｂが突出している。好ましいのは、積層体組み込み時に下方に位置する板が突出することである。   As shown in FIG. 1, the pedestal 6 has a surface 6 b parallel to the axis a of the rotation shaft 3. On the surface 6b of the base 6, a pair of plates 10 and 11 are arranged so as to be opposed to each other. As shown in FIG. 2, both the plate 10 and the plate 11 have a substantially rectangular shape whose longitudinal direction is the direction of the axis a. As shown in FIG. 1, longitudinal ends 10 a and 11 a (the right side in FIG. 1) of the plate 10 and the plate 11 are arranged on the surface 6 b of the base 6. Although the thickness of the boards 10 and 11 is not specifically limited, For example, it can be set as 0.1-1 mm. Moreover, the length of the Y-axis direction of the plates 10 and 11 can be about 30 to 100 mm, for example, and the width in the X-axis direction can be about 5 to 30 mm, for example. In particular, as shown in FIG. 2, the length of one plate of the pair of plates 10 and 11 in the Y direction is different from the length of the other plate in the Y direction. In the end portions 10b and 11b on the side opposite to the pedestal 6 (left side in FIG. 2), it is preferable that either the plate 10 or the plate 11 protrudes in the direction of the axis a compared to the other. In FIG. 2, the end portion 11b of the plate 11 protrudes. It is preferable that the plate located below protrudes when the laminate is assembled.

板１０、１１は、板１０、１１間に、回転軸３の軸線ａが配置されるように板固定部２０により挟持されている。ここで、板１０、１１間とは、板１０、１１それぞれの厚みを含む領域のことである。   The plates 10 and 11 are sandwiched between the plates 10 and 11 by the plate fixing portion 20 so that the axis a of the rotating shaft 3 is disposed. Here, the space between the plates 10 and 11 is a region including the thickness of each of the plates 10 and 11.

板１０及び板１１は、図２のようにＺ方向から見て、Ｘ方向において一方の板が±Ｘ方向の一方側に突出し、他方の板が±Ｘ方向の他方側に突出するように、互いにずれて配置されていてよいが、Ｘ方向において完全に重なるように配置されてもよい。ここで、図３に示す、軸線ａと板１０の端面との最大距離をＸ１０とし、軸線ａと板１１の端面との最大距離をＸ１１とした場合に、つねに、Ｘ１０＝Ｘ１１となるように板１０及び板１１を互いにずらした状態とする。板１０及び板１１により、巻き軸２５の幅Ｘ２５が規定される。   The plate 10 and the plate 11 are viewed from the Z direction as shown in FIG. 2 so that one plate protrudes on one side in the ± X direction and the other plate protrudes on the other side in the ± X direction in the X direction. Although they may be arranged shifted from each other, they may be arranged so as to completely overlap in the X direction. Here, when the maximum distance between the axis a and the end surface of the plate 10 shown in FIG. 3 is X10 and the maximum distance between the axis a and the end surface of the plate 11 is X11, always X10 = X11. The plate 10 and the plate 11 are shifted from each other. The plate 10 and the plate 11 define a width X25 of the winding shaft 25.

板１０及び板１１の上には、台座６の面６ｂと対向配置された押さえ部材７が配置されている。押さえ部材７は、図１に示すように、板１０及び板１１の一端部１０ａ，１１ｂを覆うように配置されており、図３に示すように、Ｘ方向に離間するボルト１２、１２によって、台座６に対して固定されている。すなわち、板１０、１１の一端部１０ａ，１１ｂが、台座６及び押さえ部材７及びボルト１２、１２によって厚み方向に挟持され固定されている。この挟持状態は、ボルト１２、１２を緩めることによって解除可能であり、解除された状態では、板１０、１１は、それぞれ、容易に±Ｘ方向に動かすことができる。ここで、台座６、押さえ部材７、及び、ボルト１２、１２が、板１０、１１を挟持する板固定部２０を構成している。   On the plate 10 and the plate 11, a pressing member 7 disposed to face the surface 6 b of the base 6 is disposed. As shown in FIG. 1, the pressing member 7 is disposed so as to cover the one end portions 10 a and 11 b of the plate 10 and the plate 11, and as shown in FIG. 3, by the bolts 12 and 12 that are separated in the X direction, It is fixed with respect to the base 6. That is, the one end portions 10 a and 11 b of the plates 10 and 11 are sandwiched and fixed in the thickness direction by the base 6, the pressing member 7, and the bolts 12 and 12. This sandwiched state can be released by loosening the bolts 12 and 12. In the released state, the plates 10 and 11 can be easily moved in the ± X directions, respectively. Here, the base 6, the pressing member 7, and the bolts 12 and 12 constitute a plate fixing portion 20 that sandwiches the plates 10 and 11.

続いて、このような電極巻回装置の使用方法について、図４及び図５を参照して説明する。まず、電極シート３０を用意する。電極シート３０は、図５に示すように、通常、正極３０ａ／セパレータ３０ｓ／負極３０ｂ／セパレータ３０ｓの構造を有する積層体シートである。   Then, the usage method of such an electrode winding apparatus is demonstrated with reference to FIG.4 and FIG.5. First, the electrode sheet 30 is prepared. As shown in FIG. 5, the electrode sheet 30 is usually a laminate sheet having a structure of positive electrode 30a / separator 30s / negative electrode 30b / separator 30s.

正極３０ａ、負極３０ｂ、セパレータ３０ｓについては、公知の電気化学デバイスに使用されるものが特に制限なく利用できる。   About the positive electrode 30a, the negative electrode 30b, and the separator 30s, what is used for a well-known electrochemical device can be especially utilized without a restriction | limiting.

電気化学デバイスとは、例えば、電池、電気化学キャパシタ等であり、特に、リチウムイオン二次電池や、電気２重層キャパシタが例示できる。例えば、正極３０ａや負極３０ｂは、銅やアルミニウム等の金属製の集電体上に、リチウム含有金属酸化物や炭素等の活物質をバインダや導電助剤と共に塗布したものが挙げられる。また、セパレータ３０ｓは、樹脂や紙製の多孔質シートが挙げられる。   The electrochemical device is, for example, a battery, an electrochemical capacitor, or the like, and in particular, a lithium ion secondary battery or an electric double layer capacitor can be exemplified. For example, the positive electrode 30a and the negative electrode 30b may be obtained by applying an active material such as a lithium-containing metal oxide or carbon together with a binder or a conductive aid on a current collector made of metal such as copper or aluminum. The separator 30s may be a resin or paper porous sheet.

続いて、図４に示すように、他方に比べて突出している板１１の端部を指ｆで押して、板１０と板１１との間に隙間４０を形成し、電極シート３０の端部を板１０と板１１との間に挿入し、その後、指ｆで押すのをやめて、板１０と板１１との間に、電極シート３０の端部を挟んで固定する。その後、ハンドル５ｂを図示Ａ方向に廻して、回転軸３を軸線ａ周りに回転させることにより、板１０及び板１１により形成される巻き軸２５の周りに、電極シート３０を巻回する。これにより、図５に示すように、板１０及び板１１により形成された巻き軸２５の周りに電極シート３０が巻回された扁平型の巻回体が完成する。その後、巻回体を巻き軸２５から引き抜き、電解液に浸漬する等の公知の方法により電気化学デバイスが得られる。   Subsequently, as shown in FIG. 4, the end of the plate 11 protruding compared to the other is pushed with a finger f to form a gap 40 between the plate 10 and the plate 11, and the end of the electrode sheet 30 is It inserts between the board 10 and the board 11, and stops pressing with the finger | toe f after that, and it fixes by pinching | interposing the edge part of the electrode sheet 30 between the board 10 and the board 11. FIG. Then, the electrode sheet 30 is wound around the winding shaft 25 formed by the plate 10 and the plate 11 by turning the handle 5b in the direction A in the drawing and rotating the rotary shaft 3 around the axis a. As a result, as shown in FIG. 5, a flat wound body in which the electrode sheet 30 is wound around the winding shaft 25 formed by the plate 10 and the plate 11 is completed. Thereafter, the electrochemical device is obtained by a known method such as drawing the wound body from the winding shaft 25 and immersing it in the electrolytic solution.

そして、図５のようにして得られる巻回体の横幅は、巻き数や電極シートの厚みが同じであれば、主として巻き軸２５の幅Ｘ２５により決定される。したがって、巻き軸２５の幅Ｘ２５を広くしたい場合には、図３において、ボルト１２、１２を緩め、板１０を図３の−Ｘ方向に、板１１を＋Ｘ方向にそれぞれ同一量移動させればよく、これにより、巻き軸２５の中心軸を回転軸３の軸線ａと同一に維持しながら、巻き軸２５の幅Ｘ２５の幅を広くすることができる。また、巻き軸２５の幅Ｘ２５を狭くしたい場合には、例えば、板１０を図３の＋Ｘ方向に、板１１を−Ｘ方向にそれぞれ同一量移動させればよく、これによっても巻き軸２５の中心軸を回転軸３の軸線ａと同一に維持しながら、巻き軸２５の幅Ｘ２５の幅を狭くすることができる。   The lateral width of the wound body obtained as shown in FIG. 5 is mainly determined by the width X25 of the winding shaft 25 if the number of windings and the thickness of the electrode sheet are the same. Therefore, in order to increase the width X25 of the winding shaft 25, the bolts 12 and 12 are loosened in FIG. 3, and the plate 10 is moved in the −X direction in FIG. 3 and the plate 11 is moved in the + X direction by the same amount. This makes it possible to increase the width X25 of the winding shaft 25 while maintaining the central axis of the winding shaft 25 the same as the axis a of the rotary shaft 3. In order to reduce the width X25 of the winding shaft 25, for example, the plate 10 may be moved by the same amount in the + X direction of FIG. 3 and the plate 11 in the −X direction, respectively. The width X25 of the winding shaft 25 can be reduced while maintaining the central axis the same as the axis a of the rotary shaft 3.

本実施形態によれば、板固定部２０により一対の板１０、１１のそれぞれが、各板１０、１１の平面方向かつ回転軸３の軸線ａに対して垂直な方向、すなわち、±Ｘ方向における任意の位置に固定可能となっている。したがって、一対の板１０、１１により形成される巻き軸２５の幅Ｘ２５を変更したい場合に、一対の板１０、１１の両方を、巻き軸２５の幅Ｘ２５を広げる方向または狭める方向にそれぞれ移動させることができる。これにより、どのような巻き軸２５の幅Ｘ２５であっても、一対の板１０、１１により形成される巻き軸２５の中心軸線と、回転軸３の軸線ａとを一致させることができる。したがって、巻き軸２５の幅Ｘ２５に関わらず、互いに均等な張力で電極シート３０を巻回することができる。   According to the present embodiment, each of the pair of plates 10 and 11 is caused by the plate fixing portion 20 in the plane direction of the plates 10 and 11 and in the direction perpendicular to the axis a of the rotation shaft 3, that is, in the ± X direction. It can be fixed at any position. Therefore, when it is desired to change the width X25 of the winding shaft 25 formed by the pair of plates 10 and 11, both the pair of plates 10 and 11 are moved in the direction of expanding or narrowing the width X25 of the winding shaft 25, respectively. be able to. Thereby, whatever the width X25 of the winding shaft 25, the central axis of the winding shaft 25 formed by the pair of plates 10 and 11 and the axis a of the rotary shaft 3 can be matched. Therefore, regardless of the width X25 of the winding shaft 25, the electrode sheet 30 can be wound with a uniform tension.

これにより、巻き軸２５の両端における電極シートの積層密度の差を少なくすることができ、したがって、電極密度の差を少なくすることができ、充放電を繰り返した際の劣化を低減することができる。   Thereby, the difference of the lamination | stacking density of the electrode sheet in the both ends of the winding axis | shaft 25 can be decreased, Therefore, the difference of electrode density can be decreased and deterioration at the time of repeating charging / discharging can be reduced. .

また、板固定部２０は、一対の板１０、１１の軸線ａ方向の一端部１０ａ，１１ａ同士を厚み方向から挟持しているので、固定時に一対の板１０、１１を十分に固定できる一方、固定解除時における一対の板１０、１１のそれぞれ移動動作が迅速かつ容易に行える。また、一対の板１０、１１が挟持された状態で、一対の板１０、１１の間に電極シート３０の端部を挟むと、電極シート３０の端部が一対の板１０、１１により挟持され、これにより、電極シート３０の端部を、巻き軸２５に容易に固定できる。したがって、巻回工程を簡単化することができる。   In addition, since the plate fixing portion 20 sandwiches the end portions 10a, 11a in the direction of the axis a of the pair of plates 10, 11 from the thickness direction, the pair of plates 10, 11 can be sufficiently fixed at the time of fixing, Each of the pair of plates 10 and 11 can be moved quickly and easily at the time of unlocking. Further, when the end of the electrode sheet 30 is sandwiched between the pair of plates 10 and 11 with the pair of plates 10 and 11 being sandwiched, the end of the electrode sheet 30 is sandwiched between the pair of plates 10 and 11. Thus, the end of the electrode sheet 30 can be easily fixed to the winding shaft 25. Therefore, the winding process can be simplified.

また、一方の板１１は、板固定部２０に挟持される側とは反対側の端部１１ｂにおいて、他方の板１０の端部１０ｂよりも軸線ａ方向に突出している。これにより、一方の板１１の突出部を利用して容易に、板１０と板１１との間に隙間４０を生じさせることができる。したがって、巻回前に、板１０と板１１との間に電極シート３０の端部を差し込んで電極シートの端部を固定することが容易である。   In addition, one plate 11 protrudes in the axis a direction from the end portion 10 b of the other plate 10 at the end portion 11 b opposite to the side sandwiched by the plate fixing portion 20. Thereby, the clearance gap 40 can be easily produced between the board 10 and the board 11 using the protrusion part of the one board 11. Therefore, it is easy to fix the end of the electrode sheet by inserting the end of the electrode sheet 30 between the plate 10 and the plate 11 before winding.

（第２実施形態）
本実施形態が第１実施形態と異なる点は、位置決めシート２１のみであるのでこれについてのみ説明する。図６、図７に示すように、位置決めシート２１は、板１０と板１１との間に設けられている。そして、位置決めシート２１は、巻回される電極シート３０の側面が当接するように配置されている。 (Second Embodiment)
Since this embodiment is different from the first embodiment only in the positioning sheet 21, only this will be described. As shown in FIGS. 6 and 7, the positioning sheet 21 is provided between the plate 10 and the plate 11. And the positioning sheet 21 is arrange | positioned so that the side surface of the electrode sheet 30 wound may contact | abut.

これにより、板１０と板１１との間に電極シート３０の端部を差し込んで固定させる際や、巻回時に、電極シート３０の位置決めが容易となり、均質な巻回体を大量生産できる。   Thereby, when inserting and fixing the edge part of the electrode sheet 30 between the board | plate 10 and the board 11, and at the time of winding, positioning of the electrode sheet 30 becomes easy, and a homogeneous wound body can be mass-produced.

本発明は上記実施形態に限られずさまざまな変形態様が可能である。   The present invention is not limited to the above embodiment, and various modifications can be made.

例えば、上記実施形態では、板固定部２０は、一対の板１０、１１を重ねた状態で厚み方向から挟持する態様であるが、一対の板１０、１１を、各板の平面方向かつ回転軸３の軸線ａに対して垂直な方向における任意の位置にそれぞれ固定可能であればこれに限られず、例えば、一対の板１０、１１を、チャック機構によって台座や回転軸に固定するものでも構わない。あるいは、図８に示すように、台座６に横長のスリット６ａを設け、一対の板１０と板１１とを、板１０と板１１とのＸ方向のズレに対応した段差１３ａをそれぞれ有する一対のスペーサ１３、１３でＸ方向の両側から挟んでスリット６ａ内に挿入し、Ｘ方向から、スペーサ１３／板１０及び板１１／スペーサ１３の構造体をねじ１２で台座６に対して押圧し、各板の平面方向かつ回転軸３の軸線ａに対して垂直な方向から板１０及び板１１を挟んで固定するものであってもよい。図８の形態の場合、一対のスペーサ１３、１３を、異なる大きさの段差１３ａを有する一対のスペーサ１３、１３と交換することによって、上記の実施形態と同様に一対の板１０、１１により形成される巻き軸２５の中心軸と、回転軸３の軸線ａとをいつも一致させることができる。   For example, in the said embodiment, although the board fixing | fixed part 20 is an aspect clamped from the thickness direction in the state which piled up a pair of plates 10 and 11, a pair of board 10 and 11 is a plane direction of each board, and a rotating shaft. However, the present invention is not limited to this as long as it can be fixed at arbitrary positions in a direction perpendicular to the three axis a. For example, the pair of plates 10 and 11 may be fixed to a pedestal or a rotating shaft by a chuck mechanism. . Alternatively, as shown in FIG. 8, a horizontally long slit 6 a is provided in the pedestal 6, and the pair of plates 10 and 11 is provided with a pair of steps 13 a each corresponding to a deviation in the X direction between the plates 10 and 11. The spacers 13 and 13 are inserted into the slit 6a sandwiched from both sides in the X direction, and the structure of the spacer 13 / plate 10 and the plate 11 / spacer 13 is pressed against the pedestal 6 with screws 12 from the X direction. The plate 10 and the plate 11 may be sandwiched and fixed from the plane direction of the plate and the direction perpendicular to the axis a of the rotation shaft 3. In the case of the embodiment of FIG. 8, the pair of spacers 13 and 13 are formed by the pair of plates 10 and 11 in the same manner as in the above embodiment by replacing the pair of spacers 13 and 13 with a pair of spacers 13 and 13 having steps 13a of different sizes. The center axis of the winding shaft 25 and the axis a of the rotating shaft 3 can always coincide with each other.

また、位置決めシートの位置は板１０、１１間が好ましいが、板１０、１１間でなく、板１０の板１１と対向しない面や、板１１の板１０と対向しない面に設けられてもよい。   The position of the positioning sheet is preferably between the plates 10 and 11, but may be provided not on the plate 10 or 11 but on the surface of the plate 10 that does not face the plate 11 or the surface of the plate 11 that does not face the plate 10. .

図１は、第１実施形態に係る電極巻回装置の正面図である。FIG. 1 is a front view of the electrode winding apparatus according to the first embodiment. 図２は、第１実施形態に係る電極巻回装置の上面図である。FIG. 2 is a top view of the electrode winding apparatus according to the first embodiment. 図３は、第１実施形態に係る電極巻回装置の側面図である。FIG. 3 is a side view of the electrode winding device according to the first embodiment. 図４は、第１実施形態に係る電極巻回装置の使用状況を説明する斜視図である。FIG. 4 is a perspective view for explaining a usage situation of the electrode winding device according to the first embodiment. 図５は、第１実施形態に係る電極巻回装置の使用状況を説明する図５に続く巻き軸２５周辺の正面拡大図である。FIG. 5 is an enlarged front view of the periphery of the winding shaft 25 subsequent to FIG. 5 for explaining the usage state of the electrode winding device according to the first embodiment. 図６は、第２実施形態に係る電極巻回装置の正面図である。FIG. 6 is a front view of the electrode winding apparatus according to the second embodiment. 図７は、第２実施形態に係る電極巻回装置の上面図である。FIG. 7 is a top view of the electrode winding apparatus according to the second embodiment. 図８は、第３実施形態に係る電極巻回装置の上面図である。FIG. 8 is a top view of the electrode winding apparatus according to the third embodiment.

符号の説明Explanation of symbols

３…回転軸、１０、１１…板、２０…板固定部、２１…位置決めシート、２５…巻き軸、３０…電極シート、１００…電極巻回装置、ａ…軸線。   DESCRIPTION OF SYMBOLS 3 ... Rotating shaft 10, 11 ... Plate, 20 ... Plate fixing part, 21 ... Positioning sheet, 25 ... Winding shaft, 30 ... Electrode sheet, 100 ... Electrode winding apparatus, a ... Axis line.

Claims (4)

回転軸と、
前記回転軸の軸線を挟んで互いに対向するように配置され、前記回転軸の軸線方向にそれぞれ伸びる一対の板と、
前記回転軸に固定され、前記一対の板を、前記板の平面方向かつ前記回転軸の軸線に対して垂直な方向における任意の位置にそれぞれ固定可能な板固定部と、を備える電極巻回装置。 A rotation axis;
A pair of plates that are arranged to face each other across the axis of the rotating shaft and extend in the axial direction of the rotating shaft;
An electrode winding device comprising: a plate fixing portion fixed to the rotating shaft and capable of fixing the pair of plates at arbitrary positions in a plane direction of the plates and in a direction perpendicular to the axis of the rotating shaft. . 前記板固定部は、前記一対の板の前記軸線方向の一端部同士を厚み方向から挟持する請求項１記載の電極巻回装置。   The electrode winding device according to claim 1, wherein the plate fixing portion clamps one end portions of the pair of plates in the axial direction from the thickness direction. 一方の前記板は、前記板固定部に挟持される側とは反対側において、他方の前記板よりも前記軸線方向に突出している請求項２記載の電極巻回装置。   The electrode winding apparatus according to claim 2, wherein one of the plates protrudes in the axial direction from the other plate on the side opposite to the side sandwiched by the plate fixing portion. 少なくとも一方の前記板に、巻回される電極シートの側面を当接させる電極シート位置決め部が設けられている請求項１〜３のいずれか記載の電極巻回装置。   The electrode winding apparatus according to any one of claims 1 to 3, wherein an electrode sheet positioning portion is provided on at least one of the plates to contact a side surface of the wound electrode sheet.
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN107082307A (en) * 2016-02-15 2017-08-22 曼兹意大利有限责任公司 Coiler device and method
US20180144878A1 (en) * 2016-11-23 2018-05-24 Avx Corporation Ultracapacitor for Use in a Solder Reflow Process

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JPH0922856A (en) * 1995-07-05 1997-01-21 Kaidou Seisakusho:Kk Flat type core
JP2003335437A (en) * 2002-05-16 2003-11-25 Ckd Corp Take-up device of winding element
JP2007022740A (en) * 2005-07-15 2007-02-01 Nec Tokin Corp Winding shaft

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0922856A (en) * 1995-07-05 1997-01-21 Kaidou Seisakusho:Kk Flat type core
JP2003335437A (en) * 2002-05-16 2003-11-25 Ckd Corp Take-up device of winding element
JP2007022740A (en) * 2005-07-15 2007-02-01 Nec Tokin Corp Winding shaft

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107082307A (en) * 2016-02-15 2017-08-22 曼兹意大利有限责任公司 Coiler device and method
US20180144878A1 (en) * 2016-11-23 2018-05-24 Avx Corporation Ultracapacitor for Use in a Solder Reflow Process
US11830672B2 (en) * 2016-11-23 2023-11-28 KYOCERA AVX Components Corporation Ultracapacitor for use in a solder reflow process

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