JP3613953B2 - Spiral battery manufacturing equipment - Google Patents

Spiral battery manufacturing equipment Download PDF

Info

Publication number
JP3613953B2
JP3613953B2 JP32327197A JP32327197A JP3613953B2 JP 3613953 B2 JP3613953 B2 JP 3613953B2 JP 32327197 A JP32327197 A JP 32327197A JP 32327197 A JP32327197 A JP 32327197A JP 3613953 B2 JP3613953 B2 JP 3613953B2
Authority
JP
Japan
Prior art keywords
winding shaft
electrode plate
slit
winding
shaft
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
JP32327197A
Other languages
Japanese (ja)
Other versions
JPH11162500A (en
Inventor
弘幸 西田
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.)
Ube Corp
Original Assignee
Ube Industries 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 Ube Industries Ltd filed Critical Ube Industries Ltd
Priority to JP32327197A priority Critical patent/JP3613953B2/en
Publication of JPH11162500A publication Critical patent/JPH11162500A/en
Application granted granted Critical
Publication of JP3613953B2 publication Critical patent/JP3613953B2/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

Landscapes

  • Winding Of Webs (AREA)
  • Primary Cells (AREA)
  • Secondary Cells (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、巻軸のスリットにセパレータを介して正極板および負極板を積層した帯状のシート体を挟み込んでこの巻軸を回転駆動して前記シート体を渦巻状に形成した後、前記巻軸を引き抜いて渦巻状電池を製造する渦巻状電池製造装置に関する。
【０００２】
【従来の技術】
例えば、電池の組立工程において、帯状の正極板および負極板をセパレータを挟んで巻回することにより極板群（渦巻体）が形成された後、この極板群が電池缶内に収納されるとともに、前記電池缶内に電解液を注液する作業が行われている。
【０００３】
この場合、正極板、負極板およびセパレータを一体的に巻回するために、従来から種々の装置が用いられている。この種の装置は、通常、直径方向にスリットが形成された巻軸を備えており、前記巻軸の先端がサポートピンに回転可能に支持された状態で、前記スリットにセパレータの先端が挿入されるとともに、前記セパレータを介して正極板および負極板が絶縁状態で配置される。次いで、巻軸が回転することにより、この巻軸に正極板および負極板がセパレータを介装して一体的に巻き込まれ、極板群が得られる。
【０００４】
さらに、巻軸を極板群から引き抜く動作が開始されると、この巻軸の先端がサポートピンから離脱するとともに、前記極板群の巻き締まり力により前記巻軸がスリット幅を狭める方向に弾性変形し、前記巻き締まり力が解放される。従って、巻軸の引き抜き抵抗が減少し、前記巻軸を極板群から引き抜くことができる。
【０００５】
【発明が解決しようとする課題】
ところで、巻軸に極板群が巻回された状態では、前記巻軸と前記極板群との間に、巻き締まりによる大きな圧力が付与されている。このため、巻軸を極板群から円滑に引き抜くことが困難であり、セパレータの抜き取りができずに前記極板群の中心部が引き出される、所謂、タケノコが発生するという問題が指摘されている。
【０００６】
そこで、巻軸の十分な弾性変形を得るために、スリットを前記巻軸の根元方向に延長させることが考えられる。しかしながら、スリットが必要以上に深くなると、巻回時に巻軸の先端をサポートピンに保持させた状態で、前記巻軸の先端近傍およびスリット根元近傍の曲げ応力が該巻軸自体の抗折力を超えてしまうおそれがある。これにより、特に軸径の小さな巻軸では、破損が発生し易いという問題がある。
【０００７】
本発明は、この種の問題を解決するものであり、巻軸を引き抜くために十分な弾性変形を得るとともに、前記巻軸の破損を有効に阻止することが可能な渦巻状電池製造装置を提供することを目的とする。
【０００８】
【課題を解決するための手段】
前記の課題を解決するために、本発明に係る渦巻状電池製造装置では、シート体を渦巻状に形成する巻軸が超硬合金で構成されるとともに、ピンに支持される前記巻軸の先端近傍から軸方向に延在するスリットの長さが、該巻軸の直径の１８倍〜２０倍の範囲内に設定されている。
【０００９】
ここで、スリットの長さが巻軸の直径の１８倍未満であると、所望の弾性変形が得られずに前記巻軸の軸抜き抵抗が増加し、巻きずれであるタケノコが発生してしまう。一方、スリットの長さが巻軸の直径の２０倍を超えると、前記巻軸の抗折力以上の曲げ応力が発生し、該巻軸の破損が惹起されてしまう。従って、スリットの長さを巻軸の直径の１８倍〜２０倍の範囲内に設定することにより、タケノコの発生および前記巻軸の破損を有効に阻止することができる。
【００１０】
また、巻軸として、弾性率が４００００ｋｇｆ／ｍｍ２ 〜６００００ｋｇｆ／ｍｍ２ の範囲内で、かつ静的抗折力が２００ｋｇｆ／ｍｍ２ 〜３００ｋｇｆ／ｍｍ２ の範囲内の超硬合金が用いられる。これにより、タケノコの発生および巻軸の破損を一層確実に阻止することが可能になる。
【００１１】
さらに、シート体が正極板、負極板およびセパレータを備えた電池構成体であり、この電池構成体を効率的かつ円滑に巻回して高品質な電池を製造することができる。
【００１２】
【発明の実施の形態】
図１は、本発明の実施形態に係るシート体の巻回装置１０の要部斜視説明図である。
【００１３】
巻回装置１０は、巻軸１２と、この巻軸１２を装着し、軸ホルダ１４の案内作用下に軸方向（矢印Ａ方向）に進退自在でかつ矢印Ｂ方向に回転自在な回転筒体１６と、前記巻軸１２の先端を支持する支持ピン１８とを備える。巻軸１２の先端から軸方向に向かってスリット２０が形成されるとともに、この巻軸１２の先端には、軸方向外方に指向して互いに離間する方向に傾斜する傾斜面２２ａ、２２ｂが形成される。
【００１４】
巻軸１２は、超硬合金で構成されており、この巻軸１２に形成されたスリット２０に支持ピン１８が挿入された際に、この支持ピン１８の先端から前記巻軸１２の根元側に延在する前記スリット２０の長さＬは、該巻軸１２の直径Ｄの１８倍〜２０倍の範囲内に設定される。
【００１５】
巻回装置１０により巻回される電池構成体（シート体）３０は、帯状の正極板３２と、帯状の負極板３４と、この正極板３２およびこの負極板３４の間に介装されるセパレータ３６ａ、３６ｂとを備える。正極板３２は、正極塗布部３２ａと未塗布部３２ｂとを有し、最先端の未塗布部３２ｂには、正極リード３８が保護テープ４０を介して貼り付けられている。負極板３４は、負極塗布部３４ａと未塗布部３４ｂとを有している。セパレータ３６ａ、３６ｂの巻き始め先端部は、正極板３２および負極板３４の先端よりも所定の長さだけ前方に突出している。
【００１６】
このように構成される本実施形態に係る巻回装置１０の動作について、以下に説明する。
【００１７】
先ず、図２Ａに示すように、巻軸１２は、支持ピン１８から離間して配置されており、図示しない駆動手段を介して回転筒体１６が矢印Ａ１方向に移動する。回転筒体１６と一体的に巻軸１２が矢印Ａ１方向に移動し、この巻軸１２の先端部に設けられている傾斜面２２ａ、２２ｂが支持ピン１８に当接して支持される。スリット２０にはセパレータ３６ａ、３６ｂの巻き始め先端部が挟み込まれ、前記先端部は所定の長さだけ前方に突出している。
【００１８】
次いで、図示しない回転手段を介して回転筒体１６と一体的に巻軸１２が矢印Ｂ方向に回転し、セパレータ３６ａ、３６ｂと一体的に正極板３２および負極板３４が巻回される。巻軸１２に電池構成体３０が所定の直径まで巻回されて極板群（渦巻体）４２が得られた後、巻軸１２の回転が停止される（図２Ｂ参照）。
【００１９】
そして、回転筒体１６と一体的に巻軸１２が矢印Ａ２方向に移動すると、この巻軸１２の傾斜面２２ａ、２２ｂが支持ピン１８から離脱する。このため、巻軸１２は、極板群４２の巻き締め力によりスリット２０の幅を狭める方向に弾性変形し、前記スリット２０が形成されている長さＬにわたって縮径される。これにより、極板群４２の巻き締まりによる圧力が解放され、前記巻軸１２を前記極板群４２から円滑に引き抜くことができる。
【００２０】
その際、本実施形態では、超硬合金で形成される巻軸１２において、スリット２０の軸方向の長さＬがこの巻軸１２の直径Ｄの１８倍〜２０倍の範囲内に設定されている。従って、巻軸１２が有効に弾性変位して極板群４２が積層されている部分の軸径を確実に縮径することができ、軸抜き抵抗が小さくなって巻きずれのない高品質な極板群４２を効率的に製造することが可能になるという効果が得られる。しかも、極板群４２の巻き締まり圧力による曲げ応力が巻軸１２の抗折力を超えることがなく、前記巻軸１２が破損することを有効に阻止することができる。
【００２１】
次に、巻軸１２のスリット２０の長さＬを種々変更し、軸抜き抵抗、タケノコの発生および前記巻軸１２の破損状態を検出する実験を行った。具体的には、巻軸１２として、ＪＩＳ Ｄ５０の超硬合金を使用した。この超硬合金は、弾性率が４００００ｋｇｆ／ｍｍ２ 〜６００００ｋｇｆ／ｍｍ２ の範囲内で、かつ静的抗折力が２００ｋｇｆ／ｍｍ２ 〜３００ｋｇｆ／ｍｍ２ の範囲内であった。
【００２２】
巻軸１２の直径Ｄは、３．５ｍｍと４ｍｍの２種類が設定され、支持ピン１８の直径Ｄ１（図２Ａ参照）は、強度のバランス等から１．５ｍｍに設定された。さらに、極板群４２の先端側端面から支持ピン１８による支持位置までの距離ａが１ｍｍに設定されるとともに、この極板群４２の外径Ｄ２が１７．３ｍｍに、高さＨが５８ｍｍに設定された（図２Ｂ参照）。また、巻回テンションは、正極板３２および負極板３４が６００ｇであり、セパレータ３６ａ、３６ｂが３５０ｇであった。
【００２３】
そこで、直径Ｄが３．５ｍｍに設定された巻軸１２による実験結果が表１に示されており、直径Ｄが４ｍｍに設定された巻軸１２による測定結果が表２に示されている。
【００２４】
【表１】

Figure 0003613953
【００２５】
【表２】
Figure 0003613953
【００２６】
この実験により、直径Ｄが３．５ｍｍおよび４ｍｍに設定されたそれぞれの巻軸１２において、スリット２０の長さＬが前記直径Ｄの１８倍〜２０倍の範囲内に設定されると、タケノコの発生がなく、かつ前記巻軸１２が破損することもないという結果が得られた。
【００２７】
【発明の効果】
以上のように、本発明に係る渦巻状電池製造装置では、セパレータを介して正極板および負極板を積層したシート体を挟み込んで渦巻状に形成する巻軸が、弾性率が４００００ｋｇｆ／ｍｍ 2 〜６００００ｋｇｆ／ｍｍ 2 の範囲内であり、静的抗折力が２００ｋｇｆ／ｍｍ 2 〜３００ｋｇｆ／ｍｍ 2 の範囲内である超硬合金で構成されるとともに、ピンに支持される前記巻軸の先端近傍から軸方向に延在するスリットの長さが、前記巻軸の直径の１８倍〜２０倍の範囲内に設定されている。これにより、巻軸が十分に弾性変形して巻きずれのない高品質な渦巻状電池を製造することができるとともに、前記巻軸の破損を有効に阻止することが可能となる。
【図面の簡単な説明】
【図１】本発明の実施形態に係るシート体の巻回装置の要部斜視説明図である。
【図２】前記巻回装置の動作説明図であり、図２Ａは、巻軸が退避した状態の説明図であり、図２Ｂは、前記巻軸に極板群が巻回された状態の説明図である。
【符号の説明】
１０…巻回装置 １２…巻軸
１４…軸ホルダ １６…回転筒体
１８…支持ピン ２０…スリット
２２ａ、２２ｂ…傾斜面 ３０…電池構成体
３２…正極板 ３４…負極板
３６ａ、３６ｂ…セパレータ[0001]
BACKGROUND OF THE INVENTION
The present invention, after forming the sheet spirally this winding shaft driven to rotate by sandwiching the band-shaped sheet formed by laminating a positive electrode plate and negative electrode plate via a separator slit of the winding shaft, the winding axis about spiral cell manufacturing apparatus for manufacturing a spiral battery withdrawn.
[0002]
[Prior art]
For example, in a battery assembling process, an electrode plate group (a spiral body) is formed by winding a belt-like positive electrode plate and a negative electrode plate with a separator interposed therebetween, and then this electrode plate group is housed in a battery can. At the same time, an operation of injecting an electrolytic solution into the battery can is performed.
[0003]
In this case, various devices have been conventionally used to integrally wind the positive electrode plate, the negative electrode plate, and the separator. This type of apparatus usually includes a winding shaft having a slit formed in the diameter direction, and the tip of the separator is inserted into the slit while the tip of the winding shaft is rotatably supported by a support pin. In addition, the positive electrode plate and the negative electrode plate are disposed in an insulating state via the separator. Next, when the winding shaft is rotated, the positive electrode plate and the negative electrode plate are integrally wound around the winding shaft with a separator interposed therebetween, and an electrode plate group is obtained.
[0004]
Further, when the operation of pulling out the winding shaft from the electrode plate group is started, the tip of the winding shaft is detached from the support pin, and the winding shaft is elastically elastically narrowed by the tightening force of the electrode plate group. It is deformed and the tightening force is released. Therefore, the pulling resistance of the winding shaft is reduced, and the winding shaft can be pulled out from the electrode plate group.
[0005]
[Problems to be solved by the invention]
By the way, in the state in which the electrode plate group is wound around the winding shaft, a large pressure due to tightening is applied between the winding shaft and the electrode plate group. For this reason, it has been pointed out that it is difficult to smoothly pull out the winding shaft from the electrode plate group, and a so-called bamboo shoot is generated in which the central part of the electrode plate group is pulled out without being able to extract the separator. .
[0006]
Therefore, in order to obtain sufficient elastic deformation of the winding shaft, it is conceivable to extend the slit in the root direction of the winding shaft. However, when the slit becomes deeper than necessary, the bending stress in the vicinity of the end of the winding shaft and the vicinity of the slit base causes the bending strength of the winding shaft itself to be reduced while the tip of the winding shaft is held by the support pin during winding. May exceed. As a result, there is a problem that breakage tends to occur particularly on a winding shaft having a small shaft diameter.
[0007]
The present invention solves this type of problem, and provides a spiral battery manufacturing apparatus capable of obtaining sufficient elastic deformation to pull out the winding shaft and effectively preventing damage to the winding shaft. The purpose is to do.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problems, in the spiral battery manufacturing apparatus according to the present invention, the winding shaft that forms the sheet body in a spiral shape is made of cemented carbide, and the tip of the winding shaft supported by the pin The length of the slit extending in the axial direction from the vicinity is set in the range of 18 to 20 times the diameter of the winding shaft.
[0009]
Here, if the length of the slit is less than 18 times the diameter of the winding shaft, the desired elastic deformation cannot be obtained, and the shaft pull-out resistance of the winding shaft increases, resulting in a bamboo shoot that is a winding deviation. . On the other hand, if the length of the slit exceeds 20 times the diameter of the winding shaft, bending stress exceeding the bending strength of the winding shaft is generated, and the winding shaft is damaged. Therefore, by setting the length of the slit within the range of 18 to 20 times the diameter of the winding shaft, it is possible to effectively prevent the occurrence of bamboo shoots and breakage of the winding shaft.
[0010]
Further, as the winding shaft, a cemented carbide having an elastic modulus in the range of 40000 kgf / mm 2 to 60000 kgf / mm 2 and a static bending force in the range of 200 kgf / mm 2 to 300 kgf / mm 2 is used. This makes it possible to more reliably prevent the occurrence of bamboo shoots and breakage of the winding shaft.
[0011]
Furthermore, the sheet body is a battery structure including a positive electrode plate, a negative electrode plate, and a separator, and the battery structure can be wound efficiently and smoothly to produce a high-quality battery.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a perspective view illustrating a main part of a sheet body winding device 10 according to an embodiment of the present invention.
[0013]
The winding device 10 is equipped with a winding shaft 12 and a rotating cylindrical body 16 that is mounted with the winding shaft 12 and that can move forward and backward in the axial direction (arrow A direction) and rotate in the arrow B direction under the guiding action of the shaft holder 14. And a support pin 18 that supports the tip of the winding shaft 12. A slit 20 is formed in the axial direction from the tip of the winding shaft 12, and inclined surfaces 22a and 22b are formed at the tip of the winding shaft 12 so as to be inclined outwardly in the axial direction. Is done.
[0014]
The winding shaft 12 is made of cemented carbide, and when the support pin 18 is inserted into the slit 20 formed in the winding shaft 12, the tip of the support pin 18 extends to the root side of the winding shaft 12. The length L of the extending slit 20 is set within a range of 18 to 20 times the diameter D of the winding shaft 12.
[0015]
A battery structure (sheet body) 30 wound by the winding device 10 includes a strip-shaped positive plate 32, a strip-shaped negative plate 34, and a separator interposed between the positive plate 32 and the negative plate 34. 36a, 36b. The positive electrode plate 32 has a positive electrode application part 32 a and an unapplied part 32 b, and a positive electrode lead 38 is attached to the most recent unapplied part 32 b with a protective tape 40. The negative electrode plate 34 has a negative electrode application part 34a and an unapplication part 34b. The winding start tips of the separators 36a and 36b protrude forward by a predetermined length from the tips of the positive electrode plate 32 and the negative electrode plate 34.
[0016]
The operation of the winding device 10 according to this embodiment configured as described above will be described below.
[0017]
First, as shown in FIG. 2A, the winding shaft 12 is disposed away from the support pin 18, and the rotary cylinder 16 moves in the direction of the arrow A1 via a driving means (not shown). The winding shaft 12 moves integrally with the rotary cylinder 16 in the direction of the arrow A1, and the inclined surfaces 22a and 22b provided at the tip of the winding shaft 12 are in contact with and supported by the support pins 18. The slits 20 sandwich the leading ends of the separators 36a and 36b, and the leading ends protrude forward by a predetermined length.
[0018]
Next, the winding shaft 12 rotates in the direction of arrow B integrally with the rotating cylinder 16 via a rotating means (not shown), and the positive electrode plate 32 and the negative electrode plate 34 are wound integrally with the separators 36a and 36b. After the battery component 30 is wound around the winding shaft 12 to a predetermined diameter to obtain the electrode plate group (spiral body) 42, the rotation of the winding shaft 12 is stopped (see FIG. 2B).
[0019]
When the winding shaft 12 moves in the direction of the arrow A <b> 2 integrally with the rotating cylinder 16, the inclined surfaces 22 a and 22 b of the winding shaft 12 are detached from the support pins 18. For this reason, the winding shaft 12 is elastically deformed in the direction of narrowing the width of the slit 20 by the tightening force of the electrode plate group 42 and is reduced in diameter over the length L in which the slit 20 is formed. As a result, the pressure due to the tightening of the electrode plate group 42 is released, and the winding shaft 12 can be smoothly pulled out of the electrode plate group 42.
[0020]
At this time, in the present embodiment, in the winding shaft 12 formed of cemented carbide, the axial length L of the slit 20 is set within a range of 18 to 20 times the diameter D of the winding shaft 12. Yes. Therefore, it is possible to reliably reduce the shaft diameter of the portion where the winding plate 12 is effectively elastically displaced and the electrode plate group 42 is laminated, and to reduce the shaft pulling resistance and to prevent the winding deviation. The effect that it becomes possible to manufacture the board group 42 efficiently is acquired. Moreover, the bending stress due to the tightening pressure of the electrode plate group 42 does not exceed the bending strength of the winding shaft 12, and it is possible to effectively prevent the winding shaft 12 from being damaged.
[0021]
Next, an experiment was performed in which the length L of the slit 20 of the winding shaft 12 was variously changed to detect the shaft pullout resistance, the occurrence of bamboo shoots, and the damaged state of the winding shaft 12. Specifically, a JIS D50 cemented carbide was used as the winding shaft 12. This cemented carbide had an elastic modulus in the range of 40000 kgf / mm 2 to 60000 kgf / mm 2 and a static bending strength in the range of 200 kgf / mm 2 to 300 kgf / mm 2 .
[0022]
The diameter D of the winding shaft 12 was set to two types of 3.5 mm and 4 mm, and the diameter D1 (see FIG. 2A) of the support pin 18 was set to 1.5 mm from the balance of strength. Further, the distance a from the end surface on the front end side of the electrode plate group 42 to the support position by the support pin 18 is set to 1 mm, the outer diameter D2 of the electrode plate group 42 is 17.3 mm, and the height H is 58 mm. Was set (see FIG. 2B). The winding tension was 600 g for the positive electrode plate 32 and the negative electrode plate 34, and 350 g for the separators 36 a and 36 b.
[0023]
Therefore, Table 1 shows the experimental results with the winding shaft 12 with the diameter D set to 3.5 mm, and Table 2 shows the measurement results with the winding shaft 12 with the diameter D set to 4 mm.
[0024]
[Table 1]
Figure 0003613953
[0025]
[Table 2]
Figure 0003613953
[0026]
According to this experiment, when the length L of the slit 20 is set in the range of 18 to 20 times the diameter D in each winding shaft 12 having the diameter D set to 3.5 mm and 4 mm, As a result, there was no occurrence and the winding shaft 12 was not damaged.
[0027]
【The invention's effect】
As described above, in the spiral battery manufacturing apparatus according to the present invention, the winding shaft formed in a spiral shape by sandwiching the sheet body in which the positive electrode plate and the negative electrode plate are sandwiched via the separator has an elastic modulus of 40000 kgf / mm 2 to. in the range of 60000kgf / mm 2, static with transverse rupture strength is composed of the cemented carbide is in the range of 200kgf / mm 2 ~300kgf / mm 2 , near the tip of the winding shaft being supported on pins The length of the slit extending in the axial direction is set in the range of 18 to 20 times the diameter of the winding shaft. As a result, it is possible to manufacture a high-quality spiral battery that is sufficiently elastically deformed and has no winding deviation, and it is possible to effectively prevent the winding shaft from being damaged.
[Brief description of the drawings]
FIG. 1 is a perspective view of a main part of a sheet body winding device according to an embodiment of the present invention.
2A and 2B are operation explanatory views of the winding device, FIG. 2A is an explanatory view of a state in which the winding shaft is retracted, and FIG. 2B is an explanatory view of a state in which an electrode plate group is wound around the winding shaft. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Winding device 12 ... Winding shaft 14 ... Shaft holder 16 ... Rotating cylinder 18 ... Support pin 20 ... Slit 22a, 22b ... Inclined surface 30 ... Battery structure 32 ... Positive electrode plate 34 ... Negative electrode plate 36a, 36b ... Separator

Claims (1)

先端から軸方向にスリットが形成された巻軸を備え、セパレータを介して正極板および負極板を積層した帯状のシート体を前記スリットに挟み込むとともに前記先端をピンに支持させた状態で、前記巻軸を回転駆動することによって前記シート体を渦巻状に形成した後、前記巻軸を引き抜いて渦巻状電池を製造する渦巻状電池製造装置であって、
前記巻軸は、弾性率が４００００ｋｇｆ／ｍｍ 2 〜６００００ｋｇｆ／ｍｍ 2 の範囲内であり、静的抗折力が２００ｋｇｆ／ｍｍ 2 〜３００ｋｇｆ／ｍｍ 2 の範囲内である超硬合金で構成されており、
前記スリットに前記ピンが挿入された際に、該ピンの先端から前記巻軸の根元側に延在する該スリットの長さが該巻軸の直径の１８倍〜２０倍の範囲内に設定されることを特徴とする渦巻状電池製造装置。The winding shaft is provided with a slit formed in the axial direction from the tip, and a belt-like sheet body in which a positive electrode plate and a negative electrode plate are stacked via a separator is sandwiched between the slits and the tip is supported by a pin. A spiral battery manufacturing apparatus for manufacturing a spiral battery by pulling out the spiral shaft after forming the sheet body in a spiral shape by rotationally driving a shaft,
The winding shaft is made of a cemented carbide having an elastic modulus in a range of 40000 kgf / mm 2 to 60000 kgf / mm 2 and a static bending force in a range of 200 kgf / mm 2 to 300 kgf / mm 2. And
When the pin is inserted into the slit, the length of the slit extending from the tip of the pin to the base side of the winding shaft is set within a range of 18 to 20 times the diameter of the winding shaft. A spiral battery manufacturing apparatus.
JP32327197A 1997-11-25 1997-11-25 Spiral battery manufacturing equipment Expired - Fee Related JP3613953B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32327197A JP3613953B2 (en) 1997-11-25 1997-11-25 Spiral battery manufacturing equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32327197A JP3613953B2 (en) 1997-11-25 1997-11-25 Spiral battery manufacturing equipment

Publications (2)

Publication Number Publication Date
JPH11162500A JPH11162500A (en) 1999-06-18
JP3613953B2 true JP3613953B2 (en) 2005-01-26

Family

ID=18152935

Family Applications (1)

Application Number Title Priority Date Filing Date
JP32327197A Expired - Fee Related JP3613953B2 (en) 1997-11-25 1997-11-25 Spiral battery manufacturing equipment

Country Status (1)

Country Link
JP (1) JP3613953B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112635850B (en) * 2020-12-30 2022-06-17 东莞泓宇智能装备有限公司 Winding needle rotating dislocation needle drawing structure of lithium battery sheet-making winding machine and method thereof
IT202200008081A1 (en) * 2022-04-22 2023-10-22 Gd Spa APPARATUS AND METHOD FOR THE CREATION OF A COIL, PREFERABLY FOR AN ELECTROCHEMICAL CELL INTENDED FOR THE PRODUCTION OF BATTERIES
CA3241596A1 (en) * 2021-12-21 2023-06-29 G.D S.P.A. Apparatus and method for making a coil, preferably for an electrochemical cell intended for the production of batteries

Also Published As

Publication number Publication date
JPH11162500A (en) 1999-06-18

Similar Documents

Publication Publication Date Title
CA2274024A1 (en) Battery core winder and method of winding a battery core
US20110033737A1 (en) Electrode group for nonaqueous battery and method for producing the same, and cylindrical nonaqueous secondary battery and method for producing the same
JP3613953B2 (en) Spiral battery manufacturing equipment
JP4707328B2 (en) Battery having spiral electrode group and manufacturing method thereof
JP6063330B2 (en) Winding core and winding element manufacturing method
US20110008671A1 (en) Negative electrode for nonaqueous battery, electrode group for nonaqueous battery and method for producing the same, and cylindrical nonaqueous secondary battery and method for producing the same
JP2010186741A (en) Electrode group for nonaqueous battery, its manufacturing method, cylindrical nonaqueous secondary battery, and its manufacturing method
EP3709431A1 (en) Secondary battery charging/discharging device
JP6838480B2 (en) Electrode manufacturing method
JP4850202B2 (en) Winding device
WO2020077740A1 (en) Secondary battery and electrode member thereof
EP3934017A1 (en) Battery pack and method for producing a battery pack
US20130139379A1 (en) Method of battery production
JP5243765B2 (en) Winding core for winding device
CN107836053B (en) The manufacturing method of scroll-like electrode and scroll-like electrode
JP5326645B2 (en) Lithium ion capacitor
JP3611899B2 (en) Winding electrode manufacturing method and manufacturing apparatus
JP2017132589A (en) Manufacturing device and manufacturing method for wound body
JP5269132B2 (en) Winding device and winding element manufacturing method
JP2013187356A (en) Winding core of winding device, manufacturing method of element, and electrolytic capacitor using the element
JP2002343411A (en) Winding device and method for producing winding element
JPH1197273A (en) Flat-type coil winding device and manufacture of flat-type coil
CN209312947U (en) Core coil needle and up- coiler
JP2003017110A (en) Manufacturing method of cell
JP2686671B2 (en) Aluminum electrolytic capacitors

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20040416

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20040511

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040617

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: 20041012

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20041025

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: 20071112

Year of fee payment: 3

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

Free format text: PAYMENT UNTIL: 20081112

Year of fee payment: 4

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

Free format text: PAYMENT UNTIL: 20081112

Year of fee payment: 4

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

Free format text: PAYMENT UNTIL: 20091112

Year of fee payment: 5

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

Free format text: PAYMENT UNTIL: 20091112

Year of fee payment: 5

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

Free format text: PAYMENT UNTIL: 20101112

Year of fee payment: 6

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

Free format text: PAYMENT UNTIL: 20101112

Year of fee payment: 6

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

Free format text: PAYMENT UNTIL: 20111112

Year of fee payment: 7

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

Free format text: PAYMENT UNTIL: 20111112

Year of fee payment: 7

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

Free format text: PAYMENT UNTIL: 20121112

Year of fee payment: 8

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

Free format text: PAYMENT UNTIL: 20121112

Year of fee payment: 8

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

Free format text: PAYMENT UNTIL: 20121112

Year of fee payment: 8

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

Free format text: PAYMENT UNTIL: 20121112

Year of fee payment: 8

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

Free format text: PAYMENT UNTIL: 20131112

Year of fee payment: 9

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

R360 Written notification for declining of transfer of rights

Free format text: JAPANESE INTERMEDIATE CODE: R360

R370 Written measure of declining of transfer procedure

Free format text: JAPANESE INTERMEDIATE CODE: R370

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

LAPS Cancellation because of no payment of annual fees