JP3611899B2 - Winding electrode manufacturing method and manufacturing apparatus - Google Patents

Winding electrode manufacturing method and manufacturing apparatus Download PDF

Info

Publication number
JP3611899B2
JP3611899B2 JP17834595A JP17834595A JP3611899B2 JP 3611899 B2 JP3611899 B2 JP 3611899B2 JP 17834595 A JP17834595 A JP 17834595A JP 17834595 A JP17834595 A JP 17834595A JP 3611899 B2 JP3611899 B2 JP 3611899B2
Authority
JP
Japan
Prior art keywords
tape
electrode sheet
semicircular
cross
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP17834595A
Other languages
Japanese (ja)
Other versions
JPH0935738A (en
Inventor
元 高山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FDK Twicell Co Ltd
Original Assignee
Toshiba Battery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Battery Co Ltd filed Critical Toshiba Battery Co Ltd
Priority to JP17834595A priority Critical patent/JP3611899B2/en
Priority to KR1019960028088A priority patent/KR100246941B1/en
Publication of JPH0935738A publication Critical patent/JPH0935738A/en
Priority to KR1019990029892A priority patent/KR100246942B1/en
Application granted granted Critical
Publication of JP3611899B2 publication Critical patent/JP3611899B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • 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

Description

【０００１】
【発明の属する技術分野】
本発明は、円筒形状の捲回型電極を歩留まりよく製造できる製造方法、および円筒形状の捲回型電極を歩留まりよく製造できる製造装置に関する。
【０００２】
【従来の技術】
正極シート，絶縁シート，負極シートおよび絶縁シートの積層体を巻装して成る捲回型電極（起電部）を、円筒形の外装容器内に液密に封装した構成の二次電池などが広く実用に供されている。そして、この種の二次電池については、たとえば携帯電話機や携帯型パソコンなど、電子機器のコードレス化，高性能化，小形軽量化の要望に伴って、電源機能の向上が期待されている。
【０００３】
ところで、前記円筒形の起電部形成は、次のように行われている。すなわち、一対の対向する平坦面部を形成する断面半円状部を有する１本もしくは２本の巻芯体を用意し、前記対向する平坦面間に絶縁シート（セパレータ）を挟持させ、かつこの絶縁シートに正極シート，負極シートを所要の位置関係を持たせて配置する一方、その仮想中心軸（巻芯体と同軸）として巻芯体を回転させることによって、絶縁シートをセパレータとした形で巻き込み、捲回型電極（起電部）を製造している。
【０００４】
【発明が解決しようとする課題】
しかしながら、前記従来の捲回型電極の製造方法の場合は、次のような不都合な問題がある。すなわち、鉛二次電池用もしくはニッケルカドミウム二次電池用の捲回型電極の場合は、特に問題なかったが、高容量化が図られるニッケル水素二次電池用の場合には、正極シートおよび負極シートの厚さが厚くなる傾向にある。ここで、正極シートおよび負極シートの厚さが厚くなることは、セパレータを介在させての捲装（捲回），捲回型電極化において，断面半円状部の外周面に沿わせた各電極シートの巻き始めの段差が、捲回型電極化後の形状に影響を及ぼし、断面楕円形状の捲回型電極と成ることがしばしば起こる。
【０００５】
また、前記電極シートの巻き始めの段差部が、捲回型電極の最大径箇所となって、円筒形の外装容器内に装着するとき、捲回型電極の外周部が損傷されたり、あるいは外装容器内への装着が極めて困難だったりする。このような、捲回型電極外周部の損傷などの問題は、製造される二次電池の性能や信頼性を損ない、あるいは製造歩留まりの低減を招来することを意味し、実用上由々しい問題を提起している。
【０００６】
本発明は上記事情に対処してなされたもので、正極シートおよび負極シートの巻き始め段差の影響を解消し、精度の良好な円筒形状の捲回型電極を歩留まりよく作成できる製造方法および製造装置の提供を目的とする。
【０００７】
【課題を解決するための手段】
請求項１の発明は、径が異なる一対の断面半円体の断面一端側を、前記一対の断面半円体の平坦面が所定の間隔をおいて対向するように揃えて形成された断面半円状巻芯体の対向面間に、層間絶縁用のテープ状絶縁シートを挿着配置する挿着配置工程と、前記断面半円状巻芯体のうち、径の大きな前記断面半円状巻芯体の対向面を有しない非対向面に、テープ状正極シートの先端部を前記テープ状絶縁シートを介して対接させる正極シート配置工程と、前記一対の断面半円体の断面一端側が揃えられた側で、かつ、前記テープ状正極シートが配置された側と前記テープ状絶縁シートを介して異なる側に、前記テープ状絶縁シートに沿わせ、前記断面半円状巻芯体から所定の位置ずらしてテープ状負極シートを配置する負極シート配置工程と、前記断面半円状巻芯体を一定の方向に回転させて、前記テープ状正極シートの先端部に、前記テープ状負極シートの先端部を積層させて揃え、径が異なる一対の断面半円体の断面一端側を揃えることによって形成される断面他端側の段差を補って捲装して捲回型電極化する捲装工程とを有することを特徴とする捲回型電極の製造方法である。
【０００８】
請求項２の発明は、径が異なる一対の断面半円体の断面一端側を、前記一対の断面半円体の平坦面が所定の間隔をおいて対向するように揃えて形成された一対の断面半円状巻芯体と、前記断面半円状巻芯体を所定方向に回転させる回転機構とを具備し、前記断面半円状巻芯体のうち、径の大きな前記断面半円状巻芯体の対向面を有しない非対向面に、テープ状正極シートの先端部を前記テープ状絶縁シートを介して対接させ、前記断面半円状巻芯体を一定の方向に回転させて、前記テープ状正極シートの先端部に、テープ状負極シートの先端部が積層して揃うよう該テープ状負極シートを供給し、径が異なる一対の断面半円体の断面一端側を揃えることによって形成される断面他端側の段差を補って捲装することを特徴とする捲回型電極の製造装置である。
【０００９】
本発明において、テープ状正極シート，テープ状負極シートおよびテープ状絶縁シートは、いわゆるテープ状だけてなく、短冊状など帯状のもを含むものとする。
【００１０】
上記請求項１の発明では、テープ状絶縁シートに沿って捲回するテープ状正極シート，テープ状負極シートの先端部が、巻芯体の対向する平坦部の非対向面に対接された形、換言すると、少なくとも一方の電極シートの巻き始め先端部の段差が解消，低減された形態で捲回されて捲回型電極化される。したがって、前記段差に起因する楕円状化など確実に、もしくは大幅に解消されて、精度の良好な円筒状形の捲回型電極を歩留まりよく得ることができ、信頼性の高い二次電池の提供に大きく寄与する。
【００１２】
さらに、請求項２の発明では、電極シートの巻き始め先端部を径（幅）の異なりに基づいて一部露出させた平坦面に対接させ、段差発生の原因が解消もしくは低減されるため、前記請求項１の作用がより容易に達成される。
【００１３】
【発明の実施の形態】
以下図１ (a)， (b)、および図２ (a)〜 (c) 参照して実施例を説明する。 図１ (a)， (b)は、互いに異なる捲回型電極の製造装置の要部構成例を断面的に示したものである。すなわち、図１ (a)は断面半円状の平坦部1a，1bを離隔・対向させた一体型の巻芯体１と、前記巻芯体１を一定の方向に回転させる回転機構２と、前記巻芯体１に所要の絶縁シート3a，3bをガイド4aを介して供給する絶縁シート巻き戻しロール３，３′と、同じく巻芯体１に所要の正極シート5a，負極シート5bをガイド4b，4cを介してそれぞれ供給する電極シート巻き戻しロール５，５′とである。そして、前記巻芯体１は、断面半円状の平坦部1a，1bが絶縁シート3a（3b）を挿着もしくは挟着できる程度の長さで離隔・対向させた構成を採り、かつその対向平坦面の幅（断面半円径）1a，1bを異ならせている。
【００１４】
また、図１ （ｂ）の場合は、２個の巻芯体部材１′の断面半円状の平坦部１ａ，１ｂを離隔・対向させて一体型に固定構成した巻芯体１を用いた他は、前記図１ （ａ）に図示した構成と同様である。
【００１５】
次に、図２ （ａ）〜 （ｃ）を参照して、前記図１ （ａ）もしくは （ｂ）に図示した構成の製造装置によるの捲回型電極の製造例について説明する。
【００１６】
先ず、図２ （ａ）に平面的に示すごとく、巻芯体１の離隔・対向平坦部１ａ，１ｂ間に、たとえば厚さ ０．２ｍｍ，幅６０ｍｍのテープ状の絶縁シートを挿着もしくは挟着する一方、たとえば厚さ ０．８ｍｍ，幅５７ｍｍのテープ状の正極シート５ａの先端部を、前記対向平坦部１ａの非対向面部に対接・位置合わせするとともに、たとえば厚さ ０．５ｍｍ，幅５７ｍｍのテープ状の負極シート５ｂの先端部を巻芯体１から所定位置にズラして、それぞれ絶縁シート３ａ，３ｂに沿わせて配置する。
【００１７】
このように、テープ状の絶縁シート３ａ，３ｂ、正極シート５ａおよび負極シート５ｂを位置決め配置した後、回転機構２を駆動させ、巻芯体１を一定の方向に １８０°回転させる。この回転によって、図２ （ｂ）に平面的に示すごとく、正極シート５ａおよび負極シート５ｂの先端部が揃った形となり、さらに、 ３６０°回転させると、図２ （ｃ）に平面的に示すように、正極シート５ａおよび負極シート５ｂは巻き始め段差を生じないで、円筒状に捲回もしくは捲装されて、良好な円筒状形の捲回型電極が形成される。なお、前記では １８０°回転したときに、正極シート５ａおよび負極シート５ｂの先端部が揃う形としたが（図２ （ｂ））、図２ （ｄ）に平面的に示すごとく、正極シート５ａおよび負極シート５ｂの先端部が９０°程度ズレた形としても、巻き始め段差の影響がほとんどない円筒状形の捲回型電極を形成できる。
【００１９】
なお、本発明は、上記実施例に限定されるものでなく、発明の趣旨を逸脱しない範囲でいろいろの変形を採り得る。たとえば、絶縁シート，正極シート，負極シートの厚さや幅などは対象とする二次電池の種類，容量にと対応して適宜設定できる。
【００２０】
【発明の効果】
請求項１の発明によれば、テープ状正極シート，テープ状負極シートの巻き始め部の段差に起因する楕円状化などが解消された良好な円筒状形の捲回型電極を歩留まりよく得ることができるので、信頼性の高い二次電池の提供に大きく寄与する。
【００２１】
請求項２の発明によれば、電極シートの巻き始め先端部に起因する段差発生が解消もしくは低減されるため、良好な円筒状形の捲回型電極を歩留まりよく得ることができ、信頼性の高い二次電池の提供に大きく寄与する。
【図面の簡単な説明】
【図１】(a)， (b)は本発明に係る捲回型電製造装置の互いに異なる構造例の要部を示す断面図。
【図２】本発明に係る捲回型電製造装置による製造実施態様例を模式的に示すもので、(a)は正極シート先端部に対して，負極シート先端部を 180°ズラして位置決めした状態を示す平面図、 (b)は巻芯体を 180°回転させたときの状態を示す平面図、 (c)は巻芯体を 360°回転させたときの状態を示す平面図、 (d)は正極シート先端部に対して，負極シート先端部を90°ズラして位置決めした状態を示す平面図。
【符号の説明】
１……巻芯体
１′……巻芯体部材
２……回転機構
３，３′……テープ状絶縁シート巻き戻しロール
3a，3b……テープ状絶縁シート
4a，4b，4c……テープ走行ガイド
５，５′……テープ状電極シート巻き戻しロール
5a……テープ状正極シート
5b……テープ状負極シート[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a manufacturing method capable of manufacturing a cylindrical wound electrode with a high yield, and a manufacturing apparatus capable of manufacturing a cylindrical wound electrode with a high yield.
[0002]
[Prior art]
A secondary battery having a configuration in which a wound electrode (electromotive portion) formed by winding a laminate of a positive electrode sheet, an insulating sheet, a negative electrode sheet, and an insulating sheet is sealed in a liquid-tight manner in a cylindrical outer container. Widely used in practical use. With regard to this type of secondary battery, an improvement in power supply function is expected with the demand for cordless, high performance, small size and light weight electronic devices such as mobile phones and portable personal computers.
[0003]
By the way, the formation of the cylindrical electromotive portion is performed as follows. That is, one or two cores having a semicircular cross section forming a pair of opposed flat surface portions are prepared, an insulating sheet (separator) is sandwiched between the opposed flat surfaces, and the insulation is provided. While the positive electrode sheet and the negative electrode sheet are arranged with the required positional relationship on the sheet, the insulating sheet is wound in the form of a separator by rotating the core body as its virtual central axis (coaxial with the core body) Manufactures wound-type electrodes (electromotive parts).
[0004]
[Problems to be solved by the invention]
However, the conventional wound electrode manufacturing method has the following disadvantages. That is, in the case of a wound type electrode for a lead secondary battery or a nickel cadmium secondary battery, there was no particular problem, but in the case of a nickel hydride secondary battery whose capacity is increased, a positive electrode sheet and a negative electrode The thickness of the sheet tends to increase. Here, the increase in the thickness of the positive electrode sheet and the negative electrode sheet means that each of the outer circumferential surfaces of the semicircular cross-sections in the case of wearing with a separator (winding) and winding type electrode The step at the beginning of the winding of the electrode sheet affects the shape after forming the wound electrode, often resulting in a wound electrode having an elliptical cross section.
[0005]
Further, the stepped portion at the beginning of winding of the electrode sheet becomes the maximum diameter portion of the wound electrode, and when mounted in a cylindrical outer container, the outer periphery of the wound electrode is damaged or the outer It is extremely difficult to install in the container. Such problems such as damage to the outer periphery of the wound electrode mean that the performance and reliability of the manufactured secondary battery are impaired, or that the manufacturing yield is reduced. Has been raised.
[0006]
The present invention has been made in view of the above circumstances, and a manufacturing method and a manufacturing apparatus capable of eliminating the influence of the winding start step of the positive electrode sheet and the negative electrode sheet and producing a highly accurate cylindrical wound electrode with a high yield. The purpose is to provide.
[0007]
[Means for Solving the Problems]
The invention according to claim 1 is a cross-sectional semi-circular shape in which a pair of cross-sectional semicircular bodies having different diameters are aligned so that the flat surfaces of the pair of cross-sectional semicircular bodies face each other at a predetermined interval. between the facing surfaces of the circular core member, the insertion arrangement step of inserting place the tape-like insulating sheet for interlayer insulation, of said semicircular cross section Makishintai, large the sectional semicircular winding diameter A positive electrode sheet placement step in which the tip of the tape-shaped positive electrode sheet is brought into contact with the non-facing surface having no opposed surface of the core body via the tape-shaped insulating sheet, and one end side of the cross section of the pair of semicircular bodies are aligned And the side on which the tape-like positive electrode sheet is disposed and the side different from the side on which the tape-like positive electrode sheet is disposed, along the tape-like insulating sheet, A negative electrode sheet disposing step of disposing a tape-shaped negative electrode sheet by shifting the position; Serial and a semicircular cross-section winding core is rotated in a certain direction, the distal end portion of the tape-like positive electrode sheet, aligned by stacking the leading end of the tape-like negative electrode sheet, a pair of semicircular cross-section body having different diameters A winding-type electrode manufacturing method, comprising: a step of forming a wound-type electrode by covering a step on the other end side of the cross-section formed by aligning one end side of the The
[0008]
The invention according to claim 2 is a pair of one-sided cross-sections of a pair of cross-sectional semicircles having different diameters formed so that the flat surfaces of the pair of cross-sectional semicircles face each other at a predetermined interval . a semicircular cross section core body, the cross section semicircle core body; and a rotating mechanism for rotating in a predetermined direction, of the semicircular cross section Makishintai, large the semicircular cross section diameter The tip of the tape-shaped positive electrode sheet is brought into contact with the non-facing surface that does not have the facing surface of the core body via the tape-shaped insulating sheet, and the semicircular core body in cross section is rotated in a certain direction. By supplying the tape-shaped negative electrode sheet so that the tip portion of the tape-shaped negative electrode sheet is laminated and aligned with the tip portion of the tape-shaped positive electrode sheet, and aligning one end of the cross section of a pair of semicircular bodies having different diameters Made in wound electrode characterized by MekuSo compensate the level difference section end side to be formed It is a device.
[0009]
In the present invention, the tape-shaped positive electrode sheet, the tape-shaped negative electrode sheet, and the tape-shaped insulating sheet include not only a so-called tape shape but also a strip shape such as a strip shape.
[0010]
In the first aspect of the invention, the tape-shaped positive electrode sheet wound along the tape-shaped insulating sheet, and the tip of the tape-shaped negative electrode sheet are in contact with the non-opposing surfaces of the opposed flat portions of the core body. In other words, at least one of the electrode sheets is wound in a form in which the step at the beginning of winding of the electrode sheet is eliminated and reduced to form a wound electrode. Therefore, an elliptical shape caused by the step is surely or greatly eliminated, and a highly accurate cylindrical wound electrode can be obtained with a high yield, and a highly reliable secondary battery is provided. Greatly contributes.
[0012]
Furthermore, in the invention of claim 2, the leading edge of the winding start of the electrode sheet is brought into contact with a partially exposed flat surface based on the difference in diameter (width), and the cause of the occurrence of the step is eliminated or reduced. The operation of claim 1 can be achieved more easily.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
The following Figure 1 (a), (b) , and FIG. 2 (a) ~ (c) describing the references to examples. FIGS. 1A and 1B are sectional views showing an example of the configuration of the main part of a manufacturing apparatus for different wound electrodes. That is, FIG. 1A shows an integrated core body 1 in which flat portions 1a and 1b having a semicircular cross section are separated and faced, a rotating mechanism 2 that rotates the core body 1 in a fixed direction, Insulating sheet unwinding rolls 3 and 3 'for supplying the required insulating sheets 3a and 3b to the core body 1 through the guide 4a, and the required positive electrode sheet 5a and negative electrode sheet 5b to the core body 1 as a guide 4b. , 4c, and electrode sheet rewinding rolls 5 and 5 ', respectively. The winding core 1 has a configuration in which the flat portions 1a and 1b having a semicircular cross section are separated and opposed to each other with such a length that the insulating sheet 3a (3b) can be inserted or sandwiched. The flat surfaces have different widths (cross-sectional semicircular diameters) 1a and 1b.
[0014]
Further, in the case of FIG. 1B, the core body 1 is used in which the flat portions 1a and 1b having a semicircular cross section of the two core body members 1 ′ are separated and faced to be fixed integrally. The rest is the same as the configuration shown in FIG.
[0015]
Next, with reference to FIGS. 2A to 2C, an example of manufacturing a wound electrode by the manufacturing apparatus having the configuration shown in FIG. 1A or 1B will be described.
[0016]
First, as shown in a plan view in FIG. 2A, a tape-like insulating sheet having a thickness of 0.2 mm and a width of 60 mm is inserted or sandwiched between the spaced-apart and opposed flat portions 1a and 1b of the core body 1, for example. On the other hand, the front end of the tape-like positive electrode sheet 5a having a thickness of, for example, 0.8 mm and a width of 57 mm is brought into contact with and aligned with the non-opposing surface portion of the opposed flat portion 1a. The tip of the tape-like negative electrode sheet 5b having a width of 57 mm is shifted from the core body 1 to a predetermined position and arranged along the insulating sheets 3a and 3b, respectively.
[0017]
Thus, after positioning and arranging the tape-like insulating sheets 3a and 3b, the positive electrode sheet 5a, and the negative electrode sheet 5b, the rotation mechanism 2 is driven to rotate the core body 1 180 degrees in a certain direction. By this rotation, as shown in a plan view in FIG. 2 (b), the leading end portions of the positive electrode sheet 5a and the negative electrode sheet 5b are aligned, and further rotated 360 °, the plan view is shown in FIG. 2 (c). As described above, the positive electrode sheet 5a and the negative electrode sheet 5b are wound or fitted in a cylindrical shape without forming a step at the start of winding, and a favorable cylindrical wound electrode is formed. In the above description, the tips of the positive electrode sheet 5a and the negative electrode sheet 5b are aligned when rotated 180 ° (FIG. 2 (b)). As shown in FIG. 2 (d), the positive electrode sheet 5a Even if the tip of the negative electrode sheet 5b is displaced by about 90 °, it is possible to form a cylindrical wound electrode that is hardly affected by the step at the start of winding.
[0019]
In addition, this invention is not limited to the said Example, A various deformation | transformation can be taken in the range which does not deviate from the meaning of invention. For example, the thickness and width of the insulating sheet, the positive electrode sheet, and the negative electrode sheet can be appropriately set according to the type and capacity of the target secondary battery.
[0020]
【The invention's effect】
According to the first aspect of the present invention, it is possible to obtain a good cylindrical wound electrode with a good yield, in which the ovalization caused by the step of the winding start portion of the tape-shaped positive electrode sheet and the tape-shaped negative electrode sheet is eliminated. Can greatly contribute to the provision of a highly reliable secondary battery.
[0021]
According to the invention of claim 2, since the occurrence of a step due to the leading end of the electrode sheet winding is eliminated or reduced, a good cylindrical wound electrode can be obtained with a high yield, and the reliability is improved. This greatly contributes to the provision of high secondary batteries.
[Brief description of the drawings]
1A and 1B are cross-sectional views showing main parts of structural examples different from each other in a wound-type electric manufacturing apparatus according to the present invention.
FIG. 2 schematically shows an example of a manufacturing embodiment using a wound-type electric manufacturing apparatus according to the present invention. FIG. 2 (a) shows a position where a negative electrode sheet front end is shifted by 180 ° with respect to a positive electrode sheet front end. (B) is a plan view showing a state when the core body is rotated 180 °, (c) is a plan view showing a state when the core body is rotated 360 °, FIG. 4D is a plan view showing a state in which the negative electrode sheet tip is positioned 90 ° away from the positive electrode sheet tip.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Core body 1 '...... Core body member 2 ... Rotation mechanism 3, 3' ... Tape-like insulating sheet rewind roll
3a, 3b …… Tape-like insulation sheet
4a, 4b, 4c: Tape running guide 5, 5 ': Tape-like electrode sheet rewind roll
5a …… Tape-shaped positive electrode sheet
5b …… Tape-shaped negative electrode sheet

Claims (2)

径が異なる一対の断面半円体の断面一端側を、前記一対の断面半円体の平坦面が所定の間隔をおいて対向するように揃えて形成された断面半円状巻芯体の対向面間に、層間絶縁用のテープ状絶縁シートを挿着配置する挿着配置工程と、
前記断面半円状巻芯体のうち、径の大きな前記断面半円状巻芯体の対向面を有しない非対向面に、テープ状正極シートの先端部を前記テープ状絶縁シートを介して対接させる正極シート配置工程と、
前記一対の断面半円体の断面一端側が揃えられた側で、かつ、前記テープ状正極シートが配置された側と前記テープ状絶縁シートを介して異なる側に、前記テープ状絶縁シートに沿わせ、前記断面半円状巻芯体から所定の位置ずらしてテープ状負極シートを配置する負極シート配置工程と、
前記断面半円状巻芯体を一定の方向に回転させて、前記テープ状正極シートの先端部に、前記テープ状負極シートの先端部を積層させて揃え、径が異なる一対の断面半円体の断面一端側を揃えることによって形成される断面他端側の段差を補って捲装して捲回型電極化する捲装工程と
を有することを特徴とする捲回型電極の製造方法。 Opposing cross-sectional semicircular cores formed by aligning one end side of a pair of semicircular cross-sections having different diameters so that the flat surfaces of the pair of semi-circular bodies face each other at a predetermined interval between the faces, and the insertion arrangement step of inserting place the tape-like insulating sheet for interlayer insulation,
The tip of the tape-shaped positive electrode sheet is opposed to the non-facing surface of the semicircular winding core having a large diameter that does not have the facing surface of the semicircular winding core having a large diameter through the tape-shaped insulating sheet. A positive electrode sheet arranging step to be in contact;
The one end of the pair of semicircular sections is aligned on one side, and the tape-shaped positive electrode sheet is disposed on a side different from the side on which the tape-shaped positive electrode sheet is disposed along the tape-shaped insulating sheet. A negative electrode sheet disposing step of disposing a tape-shaped negative electrode sheet by shifting a predetermined position from the semicircular winding core in cross section;
A pair of cross-sectional semicircles having different diameters by rotating the cross-sectional semicircular winding core in a fixed direction and laminating and aligning the front end of the tape-shaped negative electrode sheet on the front end of the tape-shaped positive electrode sheet method for producing a wound electrode characterized by having a MekuSo step of wound electrode by being MekuSo supplemented the step of cross-section other end which is formed by aligning the cross-section end side. 径が異なる一対の断面半円体の断面一端側を、前記一対の断面半円体の平坦面が所定の間隔をおいて対向するように揃えて形成された一対の断面半円状巻芯体と、
前記断面半円状巻芯体を所定方向に回転させる回転機構と
を具備し、
前記断面半円状巻芯体のうち、径の大きな前記断面半円状巻芯体の対向面を有しない非対向面に、テープ状正極シートの先端部を前記テープ状絶縁シートを介して対接させ、前記断面半円状巻芯体を一定の方向に回転させて、前記テープ状正極シートの先端部に、テープ状負極シートの先端部が積層して揃うよう該テープ状負極シートを供給し、径が異なる一対の断面半円体の断面一端側を揃えることによって形成される断面他端側の段差を補って捲装することを特徴とする捲回型電極の製造装置。 A pair of semicircular cores having a cross-section formed by aligning one end of a cross-section of a pair of semicircular sections having different diameters so that the flat surfaces of the pair of semicircular bodies face each other at a predetermined interval When,
; And a rotating mechanism for rotating the cross-section semicircular core member in a predetermined direction,
The tip of the tape-shaped positive electrode sheet is opposed to the non-facing surface of the semicircular winding core having a large diameter that does not have the facing surface of the semicircular winding core having a large diameter through the tape-shaped insulating sheet. The tape-shaped negative electrode sheet is supplied so that the tip of the tape-like negative electrode sheet is laminated and aligned with the tip of the tape-like positive electrode sheet by rotating the semicircular core in cross section in a certain direction. An apparatus for manufacturing a wound electrode, comprising: a pair of semicircular bodies having different diameters, which are provided by compensating for a step on the other end of the cross section formed by aligning one end of the cross section .
JP17834595A 1995-07-12 1995-07-14 Winding electrode manufacturing method and manufacturing apparatus Expired - Fee Related JP3611899B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP17834595A JP3611899B2 (en) 1995-07-14 1995-07-14 Winding electrode manufacturing method and manufacturing apparatus
KR1019960028088A KR100246941B1 (en) 1995-07-12 1996-07-12 A device for producing an electrode, an axis thereof, a method of producing an electrode
KR1019990029892A KR100246942B1 (en) 1995-07-12 1999-07-23 An electric cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17834595A JP3611899B2 (en) 1995-07-14 1995-07-14 Winding electrode manufacturing method and manufacturing apparatus

Publications (2)

Publication Number Publication Date
JPH0935738A JPH0935738A (en) 1997-02-07
JP3611899B2 true JP3611899B2 (en) 2005-01-19

Family

ID=16046878

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17834595A Expired - Fee Related JP3611899B2 (en) 1995-07-12 1995-07-14 Winding electrode manufacturing method and manufacturing apparatus

Country Status (1)

Country Link
JP (1) JP3611899B2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100813831B1 (en) * 2002-04-12 2008-03-17 삼성에스디아이 주식회사 Mandrel for winding electrode roll
JP3953022B2 (en) 2003-10-29 2007-08-01 松下電器産業株式会社 Lithium ion secondary battery and method of configuring the same
JP4140517B2 (en) * 2003-12-12 2008-08-27 松下電器産業株式会社 Lithium ion secondary battery and its construction method
JP4784042B2 (en) * 2003-12-12 2011-09-28 パナソニック株式会社 Lithium ion secondary battery and manufacturing method thereof
KR100686825B1 (en) * 2005-04-25 2007-02-26 삼성에스디아이 주식회사 Electrode plate rolling Device for Secondary battery
KR100731452B1 (en) 2005-12-29 2007-06-21 삼성에스디아이 주식회사 Electrode plate rolling device and rolling method for cylinder type battery
WO2012023423A1 (en) * 2010-08-19 2012-02-23 コマツＮｔｃ株式会社 Defective electrode winding device
JP6618352B2 (en) * 2015-12-25 2019-12-11 三洋化成工業株式会社 Multilayer battery manufacturing equipment
KR102239364B1 (en) * 2017-06-27 2021-04-09 주식회사 엘지화학 Lithium secondary battery including cylindrical-jelly roll
KR101979377B1 (en) * 2018-11-14 2019-05-16 이계설 A rewinder for secondary battery
CN215933649U (en) * 2021-09-30 2022-03-01 宁德时代新能源科技股份有限公司 Battery cell, battery and power consumption device

Also Published As

Publication number Publication date
JPH0935738A (en) 1997-02-07

Similar Documents

Publication Publication Date Title
WO2018036489A1 (en) Spiral-wound battery
JP3611899B2 (en) Winding electrode manufacturing method and manufacturing apparatus
JP2023535128A (en) Electrochemical device and electronic device with same
WO2001035481A1 (en) Spiral electrode group winding method and device and battery using them
CN106816641A (en) The method of vortex rolled electrode and manufacture vortex rolled electrode
JP4707328B2 (en) Battery having spiral electrode group and manufacturing method thereof
JP2001155774A (en) Nonaqueous electrolyte secondary battery
CN112928340A (en) Roll up core structure and lithium ion battery
JP3794261B2 (en) Method and apparatus for winding spiral electrode group and battery using the same
CN104009259B (en) The coiler device with assembling core barrel for secondary cell
CN107302109B (en) Winding type battery cell
CN107302110B (en) Winding type battery cell
JP3240109B2 (en) Prismatic battery
JP5269132B2 (en) Winding device and winding element manufacturing method
JP4877684B2 (en) Winding device and winding element manufacturing method
CN116544526A (en) Winding type battery cell
CN112670596B (en) Battery cell, battery cell winding method and battery
CN216488215U (en) Battery with improved battery capacity
KR100246941B1 (en) A device for producing an electrode, an axis thereof, a method of producing an electrode
CN107293804B (en) Winding type battery cell
CN212587557U (en) Winding type battery cell and lithium ion battery
CN209963177U (en) Winding type battery cell and battery
JPH11111328A (en) Manufacture of wound type electrode and manufacturing device
CN218632165U (en) Battery core and battery
CN218004965U (en) Roll up core and battery

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20040624

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20040713

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040907

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20041019

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20041021

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081029

Year of fee payment: 4

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081029

Year of fee payment: 4

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081029

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091029

Year of fee payment: 5

LAPS Cancellation because of no payment of annual fees