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JP5291811B2 - Secondary battery manufacturing method and manufacturing apparatus - Google Patents

Secondary battery manufacturing method and manufacturing apparatus
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JP5291811B2
JP5291811B2JP2012003106AJP2012003106AJP5291811B2JP 5291811 B2JP5291811 B2JP 5291811B2JP 2012003106 AJP2012003106 AJP 2012003106AJP 2012003106 AJP2012003106 AJP 2012003106AJP 5291811 B2JP5291811 B2JP 5291811B2
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electrode plate
positive electrode
continuous separator
separator
negative electrode
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徹 福永
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Toray Engineering Co Ltd
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Translated fromJapanese

本発明は、枚葉状の正極板と負極板との間にシート状のセパレータを介在させて積層を形成するリチウム2次電池の製造方法と製造装置に関するものである。  The present invention relates to a method and an apparatus for manufacturing a lithium secondary battery in which a sheet-like separator is interposed between a sheet-like positive electrode plate and a negative electrode plate to form a stack.

正極板と負極板の間にセパレータを介在させて2次電池を製造する製造装置として、特許文献1のような製造装置が知られている。  As a manufacturing apparatus for manufacturing a secondary battery by interposing a separator between a positive electrode plate and a negative electrode plate, a manufacturing apparatus as in Patent Document 1 is known.

特許文献1の製造装置は、図4に示すように、セパレータを供給するセパレータ供給部1と、セパレータを引き出すグリップチャック11と、正極板と負極板を供給する正極板供給機構30と負極板供給機構31と、回転チャック機構45とを備えている。  As shown in FIG. 4, the manufacturing apparatus of Patent Document 1 includes a separator supply unit 1 that supplies a separator, a grip chuck 11 that pulls out the separator, a positive electrode plate supply mechanism 30 that supplies a positive electrode plate and a negative electrode plate, and a negative electrode plate supply. Amechanism 31 and arotary chuck mechanism 45 are provided.

まず、グリップチャック11がセパレータをセパレータ供給部1から所定量引き出す。次に、セパレータを挟んで対向位置に配置されている正極板供給機構30と負極板供給機構31が、引き出されたセパレータに、正極板と負極板を供給配置する。次に、回転チャック機構45が正極板と負極板をクランプし、クランプした状態で半回転する。次に、回転チャック機構の半回転にあわせて、グリップチャック11がセパレータ供給部側に戻る。次に、正極板供給機構30と負極板供給機構31が、セパレータで挟まれた正極板と負極板の外側に、さらに正極板と負極板を供給配置する。次に、回転チャック機構45が、積層された正極板と負極板をクランプした状態で半回転する。回転チャック機構45が、半回転することで2層目を形成する。次に、回転チャック機構45の半回転にあわせて、グリップチャック11がセパレータ供給側に戻る。以後、グリップチャック11が所定の高さ(正極板供給機構および負極板供給機構の高さ)に戻るまで同様の動作を繰り返す。グリップチャック11が所定の高さに戻ると、カッタがセパレータ供給部側のセパレータを切断し、グリップチャック11がセパレータを開放する。次に、回転チャック機構が積層された正極板と負極板を次の工程に搬送する。このように、特許文献1の製造装置は、セパレータに正極板と負極板を供給配置し、クランプさせた正極板と負極板を回転チャック機構45で半回転しながらリチウム2次電池を製造している。  First, the grip chuck 11 pulls out the separator from the separator supply unit 1 by a predetermined amount. Next, the positive electrode plate supply mechanism 30 and the negative electrodeplate supply mechanism 31 that are disposed at opposite positions with the separator interposed therebetween supply and arrange the positive electrode plate and the negative electrode plate to the drawn separator. Next, therotary chuck mechanism 45 clamps the positive electrode plate and the negative electrode plate, and makes a half rotation in the clamped state. Next, the grip chuck 11 returns to the separator supply unit side in accordance with the half rotation of the rotary chuck mechanism. Next, the positive electrode plate supply mechanism 30 and the negative electrodeplate supply mechanism 31 further supply and arrange the positive electrode plate and the negative electrode plate outside the positive electrode plate and the negative electrode plate sandwiched between the separators. Next, therotary chuck mechanism 45 makes a half rotation while clamping the stacked positive electrode plate and negative electrode plate. Therotary chuck mechanism 45 forms a second layer by half rotation. Next, in accordance with the half rotation of therotary chuck mechanism 45, the grip chuck 11 returns to the separator supply side. Thereafter, the same operation is repeated until the grip chuck 11 returns to a predetermined height (height of the positive electrode plate supply mechanism and the negative electrode plate supply mechanism). When the grip chuck 11 returns to a predetermined height, the cutter cuts the separator on the separator supply unit side, and the grip chuck 11 opens the separator. Next, the positive electrode plate and the negative electrode plate on which the rotating chuck mechanism is stacked are conveyed to the next step. As described above, the manufacturing apparatus disclosed in Patent Document 1 supplies the positive electrode plate and the negative electrode plate to the separator, and manufactures the lithium secondary battery while rotating the clamped positive electrode plate and the negative electrode plate halfway by the rotatingchuck mechanism 45. Yes.

特開2005−190777号公報JP 2005-190777 A

特許文献1の装置では、セパレータの引き出された長さ分だけ正極板と負極板が折り重ねられる構成となっている。大容量のリチウム2次電池のように、セパレータに折り重ねられる正極板と負極板の枚数が増えると、このような装置では対応できなくなっている。  The apparatus of Patent Document 1 is configured such that the positive electrode plate and the negative electrode plate are folded by the length of the separator drawn out. Such a device cannot cope with the increase in the number of positive and negative electrode plates folded on the separator as in a large capacity lithium secondary battery.

また、正極板と負極板はセパレータに対して固定されていないので搬送時等に積層した位置からずれてしまう問題もある。電極の位置ズレは、短絡事故により短時間に大電流が電極間に流れ爆発、発火事故などが発生する危険性がある。  Moreover, since the positive electrode plate and the negative electrode plate are not fixed with respect to the separator, there is a problem that the positive electrode plate and the negative electrode plate are displaced from the stacked positions during transportation. There is a risk that displacement of the electrodes may cause an explosion or ignition accident due to a large current flowing between the electrodes in a short time due to a short circuit accident.

本発明は、大容量のリチウム2次電池の製造に対応でき、従来の製造装置よりも生産性が向上したリチウム2次電池の製造方法と製造装置を提供することを目的としている。  An object of the present invention is to provide a method and an apparatus for manufacturing a lithium secondary battery that can cope with the manufacture of a large-capacity lithium secondary battery and that has improved productivity over conventional manufacturing apparatuses.

上記の課題を達成するために、請求項1に記載の2次電池製造方法は、
正極板の仕切りに用いられる連続セパレータに、複数の正極板を所定の間隔を保持して配置し、前記正極板に設けられたタブが前記連続セパレータの外側になるように配置し、
他方の正極板の仕切りに用いられる連続セパレータを、前記正極板が配置された連続セパレータに重ね合わせて、
前記正極板の周囲の連続セパレータ同士を
加熱溶融により貼り合わせて接着し、
裏面に接着剤の塗布された負極板を前記連続セパレータの外周面で正極板の表面および裏面に、前記連続セパレータを介して貼り付けた後、次に送られた正極板の表面および裏面には負極板を貼り付けずに、その次に送られた正極板の表面および裏面に、前記連続セパレータを介して貼り付けて、
正極板と負極板が連続セパレータを介して交互に重なり合うように積層状に収納することを特徴とする2次電池製造方法である。
In order to achieve the above object, a method for manufacturing a secondary battery according to claim 1 comprises:
In the continuous separator used for partitioning the positive electrode plate, a plurality of positive electrode plates are arranged while maintaining a predetermined interval, and the tab provided on the positive electrode plate is arranged outside the continuous separator,
Superimposing the continuous separator used for partitioning the other positive electrode plate on the continuous separator on which the positive electrode plate is arranged,
Bonding the continuous separators around the positive electrode plate together by heat melting,
After the negative electrode plate with the adhesive applied to the back surface is pasted to the front and back surfaces of the positive electrode plate on the outer peripheral surface of the continuous separator via the continuous separator, the front and back surfaces of the positive electrode plate sent next Without pasting the negative electrode plate, pasted to the front and back surfaces of the positive electrode plate sent next through the continuous separator,
The secondary battery manufacturing method is characterized in that the positive electrode plate and the negative electrode plate are housed in a stacked form so as to alternately overlap with each other via a continuous separator.

請求項2に記載の2次電池製造装置は、
正極板を挟み込む正極板の下側の連続セパレータと、正極板の上側に位置する他方の連続セパレータと、
前記連続セパレータに正極板を所定の間隔を保持し、正極板に設けられたタブを連続セパレータの外側になるように配置する移載ハンドと、
連続セパレータと正極板と他方の連続セパレータとを重ね合わせるニップロールと、
ニップロールから送り出された連続セパレータの端部と正極板毎の間隙を加熱溶融させるヒータと、
連続セパレータのヒータによる加熱溶融と、連続セパレータへの正極板の配置とを連動させて連続セパレータを間欠移動させる搬送コンベアと、
他方の電極板である負極板の裏面に接着剤を塗布する接着剤塗布ノズルと、
裏面に接着剤の塗布された負極板を前記連続セパレータの外周面で正極板の表面および裏面に、前記連続セパレータを介して貼り付けた後、次に送られた正極板の表面および裏面には負極板を貼り付けずに、その次に送られた正極板の表面および裏面に、前記連続セパレータを介して貼り付ける他方の移載ハンドと、
前記連続セパレータを正極板と負極板が前記連続セパレータを介して交互に重なり合うように折り込むスイング機構と、
折り込まれた連続セパレータを積層状に収納する収納箱とからなる2次電池製造装置である。
The secondary battery manufacturing apparatus according to claim 2 comprises:
A continuous separator on the lower side of the positive electrode plate sandwiching the positive electrode plate, the other continuous separator located on the upper side of the positive electrode plate,
A transfer hand that holds the positive electrode plate at a predetermined interval on the continuous separator and arranges tabs provided on the positive electrode plate to be outside the continuous separator;
A nip roll for superimposing the continuous separator, the positive electrode plate and the other continuous separator;
A heater for heating and melting the end of the continuous separator fed from the nip roll and the gap for each positive electrode plate;
A transport conveyor that intermittently moves the continuous separator in conjunction with the heating and melting by the heater of the continuous separator and the arrangement of the positive electrode plate on the continuous separator;
An adhesive application nozzle for applying an adhesive to the back surface of the negative electrode plate which is the other electrode plate;
After the negative electrode plate with the adhesive applied to the back surface is pasted to the front and back surfaces of the positive electrode plate on the outer peripheral surface of the continuous separator via the continuous separator, the front and back surfaces of the positive electrode plate sent next Without attaching the negative electrode plate, the other transfer hand that is attached to the front and back surfaces of the positive electrode plate sent next through the continuous separator,
A swing mechanism for folding the continuous separator so that the positive electrode plate and the negative electrode plate alternately overlap with each other through the continuous separator;
It is a secondary battery manufacturing apparatus which consists of a storage box which stores the folded continuous separator in a laminated form.

請求項1に記載の発明によれば、電極板の周囲を連続セパレータの接着により取り囲んでいるので、電極板の位置ズレを防止することができる。そのため、電極板の位置ズレによる短絡事故や爆発・発火事故などを回避することができる。さらに、セパレータが連続セパレータで構成されており、電極板毎に連続セパレータを折り込んで積層タイプの2次電池を構成することができるので、電極板の枚数に制限なく大容量の2次電池の製造に対応することができる。  According to invention of Claim 1, since the circumference | surroundings of the electrode plate are surrounded by adhesion | attachment of the continuous separator, the position shift of an electrode plate can be prevented. Therefore, it is possible to avoid a short circuit accident or an explosion / ignition accident due to the displacement of the electrode plate. Furthermore, since the separator is constituted by a continuous separator, and a laminated type secondary battery can be formed by folding the continuous separator for each electrode plate, the production of a large-capacity secondary battery is not limited by the number of electrode plates. It can correspond to.

さらに、連続セパレータを介して正極板と負極板を配置し、負極板を連続セパレータに接着しているので電極の積層状態においてコンパクトな2次電池を製造することができる。また、シート状の連続セパレータで連続的に積層することが出来るので大容量の2次電池の製造に対応することが出来る。  Furthermore, since the positive electrode plate and the negative electrode plate are arranged via the continuous separator and the negative electrode plate is bonded to the continuous separator, a compact secondary battery can be manufactured in a stacked state of the electrodes. Moreover, since it can laminate | stack continuously with a sheet-like continuous separator, it can respond to manufacture of a high capacity | capacitance secondary battery.

請求項2に記載の発明によれば、連続セパレータの電極板の周囲の接着と、連続セパレータへの電極板の配置を連動して搬送コンベアを間欠運転するので、大容量の2次電池を効率よく製造することができる。また、電極板の周囲の連続セパレータが接着さるので電極板同士の接触を防止することができる。  According to the invention described in claim 2, since the conveyance conveyor is intermittently operated in conjunction with the adhesion around the electrode plate of the continuous separator and the arrangement of the electrode plate on the continuous separator, a large capacity secondary battery can be efficiently used. Can be manufactured well. Further, since the continuous separator around the electrode plates is adhered, the contact between the electrode plates can be prevented.

さらに、接着剤を用いて負極板を連続セパレータに貼り付けているので、正極板と負極板の両方の周囲を連続セパレータで接着しなくても正極板のみの周囲の連続セパレータを接着するだけで効率よく2次電池を製造することができる。  Furthermore, since the negative electrode plate is attached to the continuous separator using an adhesive, it is only necessary to bond the continuous separator around the positive electrode plate without adhering the periphery of both the positive electrode plate and the negative electrode plate with the continuous separator. A secondary battery can be manufactured efficiently.

本発明の第1の実施の形態に係る2次電池製造装置の各要部の配置を示す概略斜視図である。It is a schematic perspective view which shows arrangement | positioning of each principal part of the secondary battery manufacturing apparatus which concerns on the 1st Embodiment of this invention.連続セパレータの接着領域と電極板の位置を示す平面図である。It is a top view which shows the adhesion area | region of a continuous separator, and the position of an electrode plate.本発明の第2の実施の形態に係る2次電池製造装置の各要部の配置を示す概略斜視図である。It is a schematic perspective view which shows arrangement | positioning of each principal part of the secondary battery manufacturing apparatus which concerns on the 2nd Embodiment of this invention.従来の2次電池製造装置の各要部の配置を示す概略斜視図である。It is a schematic perspective view which shows arrangement | positioning of each principal part of the conventional secondary battery manufacturing apparatus.

<実施の形態1>
次に本発明のリチウム2次電池製造装置(以後、2次電池製造装置と称する)の実施の形態1を図面を参照して説明する。図1は2次電池製造装置の各要部の配置を示す概略斜視図である。まず、図1に基づいて本発明の2次電池製造装置の概略構成を説明する。なお、2次電池製造装置で用いる正極板および負極板の連続セパレータSを図面の説明上、上セパレータ100と下セパレータ101に区別して記載する。また、電極板PNを正極板108と負極板109に区別して記載する。上セパレータ100は、正極板108および負極板109に対して上側に配置される連続セパレータSを示し、下セパレータ101は、下側に配置される連続セパレータSを示す。連続セパレータSの表面には、接着剤が塗布されており、加熱により接着剤が溶融し連続セパレータS同士が接着されるようになっている。
<Embodiment 1>
Next, a first embodiment of a lithium secondary battery manufacturing apparatus (hereinafter referred to as a secondary battery manufacturing apparatus) according to the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view showing an arrangement of each main part of the secondary battery manufacturing apparatus. First, a schematic configuration of the secondary battery manufacturing apparatus of the present invention will be described with reference to FIG. In addition, the continuous separator S of the positive electrode plate and the negative electrode plate used in the secondary battery manufacturing apparatus is described by distinguishing between theupper separator 100 and thelower separator 101 in the explanation of the drawings. Further, the electrode plate PN is described separately as thepositive electrode plate 108 and thenegative electrode plate 109. Theupper separator 100 indicates the continuous separator S disposed on the upper side with respect to thepositive electrode plate 108 and thenegative electrode plate 109, and thelower separator 101 indicates the continuous separator S disposed on the lower side. An adhesive is applied to the surface of the continuous separator S, and the adhesive is melted by heating so that the continuous separators S are bonded to each other.

2次電池製造装置は、上セパレータ100が送り出される上セパレータ巻出部102と、下セパレータ101が送り出される下セパレータ巻出部103と、送り出された上セパレータ100および下セパレータ101を把持して所定の長さを引き出すニップロール104と、2次電池の積層部105と、ロール状の正極材106および負極材107と、枚葉状の正極板108および負極板109と、正極板108および負極板109を搬送コンベア110上の下セパレータ101に載置する移載ハンド112と、載置された正極板108と負極板109を搬送する搬送コンベア110とを備えている。  The secondary battery manufacturing apparatus grips the upperseparator unwinding portion 102 to which theupper separator 100 is fed, the lowerseparator unwinding portion 103 to which thelower separator 101 is fed, and theupper separator 100 and thelower separator 101 that have been fed out. Anip roll 104 for pulling out the length, a laminatedportion 105 of a secondary battery, a roll-shapedpositive electrode material 106 and anegative electrode material 107, a sheet-likepositive electrode plate 108 and anegative electrode plate 109, and apositive electrode plate 108 and anegative electrode plate 109. Atransfer hand 112 placed on thelower separator 101 on thetransport conveyor 110 and atransport conveyor 110 that transports the placedpositive plate 108 andnegative plate 109 are provided.

正極板108と負極板109は、ロール状の正極材106および負極材107から引き出された電極板を、図示していない打ち抜き装置により所定の大きさに切断して形成される。なお、正極板108および負極板109にはタブ111が形成されるように所定の大きさに切断される。切断された正極板108および負極板109は移載ハンド112の近傍に供給される。  Thepositive electrode plate 108 and thenegative electrode plate 109 are formed by cutting the electrode plates drawn from the roll-shapedpositive electrode material 106 and thenegative electrode material 107 into a predetermined size by a punching device (not shown). Thepositive electrode plate 108 and thenegative electrode plate 109 are cut into a predetermined size so that atab 111 is formed. The cutpositive electrode plate 108 andnegative electrode plate 109 are supplied in the vicinity of thetransfer hand 112.

移載ハンド112はZ軸回りに回転させる支持部113と、この支持部113に支持されたアーム114と、アーム114の先端側に取り付けられた正極板108および負極板109を吸着する吸着部115とを備えている。正極板108用、負極板109用各々専用に設置された移載ハンド112は、吸着部115で正極板108と負極板109を同時に吸着して下セパレータ101に正極板108と負極板109が隣り合うように配置する。配置の際、下セパレータ101の進行方向に対して所定間隔を保つように、かつ下セパレータ101の端部から所定間隔を保つように配置する。さらに、正極板108と負極板109に設けられたタブ111は、下セパレータ101の外側になるように配置する。  Thetransfer hand 112 has asupport portion 113 that rotates around the Z axis, anarm 114 supported by thesupport portion 113, and asuction portion 115 that sucks thepositive electrode plate 108 and thenegative electrode plate 109 attached to the distal end side of thearm 114. And. Thetransfer hand 112 installed exclusively for thepositive electrode plate 108 and thenegative electrode plate 109 respectively adsorbs thepositive electrode plate 108 and thenegative electrode plate 109 simultaneously by the adsorbingportion 115, and thepositive electrode plate 108 and thenegative electrode plate 109 are adjacent to thelower separator 101. Arrange to fit. At the time of arrangement, it is arranged so as to maintain a predetermined interval with respect to the traveling direction of thelower separator 101 and to maintain a predetermined interval from the end of thelower separator 101. Further, thetabs 111 provided on thepositive electrode plate 108 and thenegative electrode plate 109 are arranged so as to be outside thelower separator 101.

下セパレータ101は、ロール状の下セパレータ巻出部103より送り出され搬送コンベア110上を通り、ニップロール104を経由してセパレータ同士の貼り合わせが行われた後、積層部105に積層される。搬送コンベア110上において、正極板108および負極板109が所定位置に配置されると、搬送コンベア110の端部に備えられているサポート部材116が待機位置から90度旋回し、正極板108および負極板109を押さえ、搬送中の位置ズレの防止を行うようになっている。なお、サポート部材116の待機位置側は、搬送コンベア110の進行方向と平行で正極板108と負極板109の配置される位置に干渉しない位置とする。また、サポート部材116は、個々の正極板108および負極板109を搬送コンベア110の進行方向に対して左右に少なくとも2カ所で支えることができるように、搬送コンベア110の端部に複数個が備えられている。搬送コンベア110は、正極板108および負極板109の移載時は停止し、サポート部材116が動作するとニップロール104方向に所定の長さ移動し、間欠運転を行うようになっている。  Thelower separator 101 is sent out from the roll-shaped lowerseparator unwinding unit 103, passes over theconveyor 110, and is bonded to the separators via thenip roll 104, and is then stacked on the stackingunit 105. When thepositive electrode plate 108 and thenegative electrode plate 109 are disposed at predetermined positions on theconveyor 110, thesupport member 116 provided at the end of theconveyor 110 is turned 90 degrees from the standby position, and thepositive electrode 108 and the negative electrode Theplate 109 is pressed to prevent misalignment during conveyance. Note that the standby position side of thesupport member 116 is parallel to the traveling direction of theconveyor 110 and does not interfere with the position where thepositive plate 108 and thenegative plate 109 are arranged. In addition, a plurality ofsupport members 116 are provided at the end of thetransfer conveyor 110 so that each of thepositive plate 108 and thenegative plate 109 can be supported in at least two places on the left and right with respect to the traveling direction of thetransfer conveyor 110. It has been. Theconveyor 110 is stopped when thepositive electrode plate 108 and thenegative electrode plate 109 are transferred, and when thesupport member 116 is operated, it moves a predetermined length in the direction of thenip roll 104 to perform intermittent operation.

なお、サポート部材116を備える変わりに、移載された正極板108と負極板109を搬送コンベア110上に固定的に保持することができるマグネットコンベア型の搬送コンベア110を用いても良い。  Instead of providing thesupport member 116, a magnet conveyortype transfer conveyor 110 that can hold the transferredpositive electrode plate 108 andnegative electrode plate 109 on thetransfer conveyor 110 may be used.

正極板108または負極板109が搬送コンベア110により搬送され、ニップロール104に近づくと、サポート部材116が90度旋回し待機位置側に戻る。そして、正極板108または負極板109が、上セパレータ巻出部102から送り出された上セパレータ100と、下セパレータ101に挟み込まれた状態でニップロール104に挟み込まれて重ねられるようになっている。以後、ニップロール104から送り出された上セパレータ100および下セパレータ101を連続セパレータSと呼び、正極板108および負極板109について電極板PNの記載も用いる。  When thepositive plate 108 or thenegative plate 109 is transported by thetransport conveyor 110 and approaches thenip roll 104, thesupport member 116 turns 90 degrees and returns to the standby position side. Then, thepositive electrode plate 108 or thenegative electrode plate 109 is sandwiched and overlapped by thenip roll 104 while being sandwiched between theupper separator 100 fed from the upperseparator unwinding portion 102 and thelower separator 101. Hereinafter, theupper separator 100 and thelower separator 101 sent out from thenip roll 104 are referred to as a continuous separator S, and the description of the electrode plate PN is also used for thepositive electrode plate 108 and thenegative electrode plate 109.

ニップロール104から送り出された連続セパレータSは、ロールヒータ117および2本の棒ヒータ118によって表面が加熱され接着剤が溶融し連続セパレータS同士が接着される。図2に連続セパレータSと電極板PN(正極板108および負極板109)と接着領域を示す。電極板PNは、連続セパレータSのほぼ中央に配置されている。ロールヒータ117は、円筒状のヒータで円筒の外周面が、電極板PNの進行方向で図2の接着領域Aを走行するようになっている。接着領域Aは、電極板PNの周囲で連続セパレータSの端との間の領域となっている。なお、図2において、袋状領域Cの中に収納された電極板PNを点線で示した。  The surface of the continuous separator S sent out from thenip roll 104 is heated by theroll heater 117 and the twobar heaters 118, the adhesive is melted, and the continuous separators S are bonded to each other. FIG. 2 shows the continuous separator S, the electrode plate PN (thepositive plate 108 and the negative plate 109), and the bonding region. The electrode plate PN is disposed substantially at the center of the continuous separator S. Theroll heater 117 is a cylindrical heater, and the outer peripheral surface of the cylinder travels in the adhesion region A of FIG. 2 in the traveling direction of the electrode plate PN. The adhesion region A is a region between the end of the continuous separator S around the electrode plate PN. In FIG. 2, the electrode plate PN accommodated in the bag-like region C is indicated by a dotted line.

次に、接着領域Aが接着されると、2本の棒ヒータ118が下降し図2の接着領域Bを接着する。接着領域Bは連続セパレータSの電極板PN毎の間隔の領域となっている。そして、2本の棒ヒータ118は、電極板PNの間隔と同じ間隔で配置されている。これにより、連続セパレータSの袋状領域Cが形成され、袋状領域Cの中に一枚づつ電極板PNが収納されるようになる。また、タブ111は、袋状領域Cから外部に露出するように形成される。従って、電極板PNの周囲が接着され電極板PNの位置ズレや正極板108と負極板109のショートを防止できるようになる。  Next, when the bonding area A is bonded, the twobar heaters 118 are lowered to bond the bonding area B of FIG. The adhesion region B is a region having an interval for each electrode plate PN of the continuous separator S. The twobar heaters 118 are arranged at the same interval as the electrode plate PN. Thereby, the bag-shaped area | region C of the continuous separator S is formed, and the electrode plate PN comes to be accommodated in the bag-shaped area C one by one. Thetab 111 is formed so as to be exposed from the bag-like region C to the outside. Therefore, the periphery of the electrode plate PN is adhered, and the positional deviation of the electrode plate PN and the short circuit between thepositive electrode plate 108 and thenegative electrode plate 109 can be prevented.

周囲が接着された電極板PNは送りロール119に送られ、その後、スイング機構120のより積層部105に正極板108と負極板109が連続セパレータSを介してジグザグ状に積み重ねられる。所定の厚さに積み重ねられると、スイング機構120の出口部に備えられているカッタによって連続セパレータSが切断され、積層体である2次電池の製造が完了する。次に、積層部105に形成された2次電池が次工程に搬送される。なお、図2において積層部105内の積層状態を示すため、積層部105は1点鎖線にて示した。  The electrode plate PN to which the periphery is bonded is sent to thefeed roll 119, and then thepositive electrode plate 108 and thenegative electrode plate 109 are stacked in a zigzag manner through the continuous separator S on thelaminated portion 105 of theswing mechanism 120. When stacked to a predetermined thickness, the continuous separator S is cut by the cutter provided at the outlet of theswing mechanism 120, and the manufacture of the secondary battery as a stacked body is completed. Next, the secondary battery formed in thestacked unit 105 is transported to the next process. In FIG. 2, in order to show the stacked state in the stackedportion 105, the stackedportion 105 is indicated by a one-dot chain line.

このように、実施の形態1の2次電池製造装置は、正極板108と負極板109は袋状領域Cに収納されているので搬送時等に積層した位置からずれることがない。そのため、電極板PNの位置ズレ、短絡事故による爆発、発火事故などを回避することができる。さらに、電極板の仕切りに用いられるセパレータが連続セパレータSで構成されており、電極板PN毎に連続セパレータSを折り込んで積層タイプの2次電池を構成することができるので、電極板の枚数に制限なく大容量の2次電池の製造に対応することができる。また、移載ハンド112で正極板108と負極板109を移載するので連続セパレータSに精度よく配置し連続性の高い生産に効率よく対応できる。  Thus, in the secondary battery manufacturing apparatus of the first embodiment, since thepositive electrode plate 108 and thenegative electrode plate 109 are stored in the bag-like region C, they do not deviate from the stacked positions during transportation. Therefore, misalignment of the electrode plate PN, explosion due to a short circuit accident, ignition accident, etc. can be avoided. Further, the separator used for partitioning the electrode plates is composed of continuous separators S, and it is possible to construct a laminated type secondary battery by folding the continuous separators S for each electrode plate PN. It can cope with the production of a large capacity secondary battery without limitation. In addition, since thepositive electrode plate 108 and thenegative electrode plate 109 are transferred by thetransfer hand 112, thepositive electrode plate 108 and thenegative electrode plate 109 are transferred to the continuous separator S with high accuracy, and can be efficiently handled for highly continuous production.

上記実施の形態1では、ロールヒータ117および2本の棒ヒータ118を用いて連続セパレータSを加熱溶融して接着していたが、加熱溶融に限らず超音波溶接を用いることもできる。  In the first embodiment, the continuous separator S is heated and melted and bonded using theroll heater 117 and the twobar heaters 118. However, the welding is not limited to heating and melting, and ultrasonic welding can also be used.

<実施の形態2>
次に、本発明の実施の形態2について、図3を用いて説明する。図3の符号において実施の形態1と同じ構成部品については同じ符号を用いる。
<Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to FIG. In FIG. 3, the same reference numerals are used for the same components as those in the first embodiment.

図3に示す2次電池製造装置は、上セパレータ100が送り出される上セパレータ巻出部102と、下セパレータ101が送り出される下セパレータ巻出部103と、送り出された上セパレータ100および下セパレータ101を把持して所定の長さを引き出すニップロール104と、2次電池の積層部105と、ロール状の正極材106および負極材107と、枚葉状の正極板108および負極板109と、正極板108を搬送コンベア110上の下セパレータ101に載置する移載ハンド112と、載置された正極板108を搬送する搬送コンベア110と、負極板109の裏面に接着剤121を塗布する接着剤塗布ノズル122と、負極板109を接着剤121の塗布位置と接着剤121の塗布された負極板109を移載する移載ハンド123とを備えている。  The secondary battery manufacturing apparatus shown in FIG. 3 includes an upperseparator unwinding portion 102 to which theupper separator 100 is fed, a lowerseparator unwinding portion 103 to which thelower separator 101 is fed, and the fedupper separator 100 andlower separator 101 to each other. Anip roll 104 that grips and pulls out a predetermined length, alaminated portion 105 of a secondary battery, a roll-shapedpositive electrode material 106 and anegative electrode material 107, a sheet-likepositive electrode plate 108 and anegative electrode plate 109, and a positive electrode plate 108 Atransfer hand 112 placed on thelower separator 101 on thetransport conveyor 110, atransport conveyor 110 that transports the placedpositive plate 108, and anadhesive application nozzle 122 that applies an adhesive 121 to the back surface of thenegative plate 109. And a transfer hand for transferring thenegative electrode plate 109 to the application position of the adhesive 121 and thenegative electrode plate 109 to which the adhesive 121 has been applied. And a 123.

正極板108と負極板109は、ロール状の正極材106および負極材107から引き出された電極板を、図示していない打ち抜き装置により所定の大きさに切断して形成される。なお、正極板108および負極板109にはタブ111が形成されるように所定の大きさに切断される。切断された正極板108は搬送コンベア110の横に設置された移載ハンド112の近傍に供給される。負極板109は、送りロール119の下方に設置された移載ハンド123の近傍に供給される。  Thepositive electrode plate 108 and thenegative electrode plate 109 are formed by cutting the electrode plates drawn from the roll-shapedpositive electrode material 106 and thenegative electrode material 107 into a predetermined size by a punching device (not shown). Thepositive electrode plate 108 and thenegative electrode plate 109 are cut into a predetermined size so that atab 111 is formed. The cutpositive electrode plate 108 is supplied to the vicinity of thetransfer hand 112 installed beside theconveyor 110. Thenegative electrode plate 109 is supplied to the vicinity of thetransfer hand 123 installed below thefeed roll 119.

移載ハンド112はZ軸回りに回転させる支持部113と、この支持部113に支持されたアーム114と、アームの先端側に取り付けられた正極板108を吸着する吸着部115とを備えている。移載ハンド112は、吸着部115を用いて正極板108を吸着し、正極板108を移載コンベア110上の下セパレータ101に所定の間隔で移載する様になっている。  Thetransfer hand 112 includes asupport portion 113 that rotates around the Z axis, anarm 114 supported by thesupport portion 113, and asuction portion 115 that sucks thepositive electrode plate 108 attached to the tip end side of the arm. . Thetransfer hand 112 sucks thepositive electrode plate 108 using thesuction unit 115, and transfers thepositive electrode plate 108 to thelower separator 101 on thetransfer conveyor 110 at a predetermined interval.

下セパレータ101は、ロール状の下セパレータ巻出部103より送り出され搬送コンベア110上を通り水平方向に移動した後、ニップロール104を経由して下降方向に移動し、積層部105に積層される。搬送コンベア110上において、正極板108が所定位置に配置されると、搬送コンベア110の端部に備えられているサポート部材116が待機位置から90度旋回し、正極板108を押さえ、搬送中の位置ズレの防止を行うようになっている。なお、サポート部材116の待機位置側は、搬送コンベア110の進行方向と平行で正極板108の配置される位置に干渉しない位置とする。また、サポート部材116は、個々の正極板108を搬送コンベア110の進行方向に対して左右に少なくとも2カ所で支えることができるように、搬送コンベア110の端部に複数個が備えられている。搬送コンベア110は、正極板108の移載時は停止し、サポート部材116が動作するとニップロール104方向に所定の長さ移動し、間欠運転を行うようになっている。  Thelower separator 101 is fed from a roll-shaped lowerseparator unwinding unit 103, moves in the horizontal direction through theconveyor 110, moves in the downward direction via thenip roll 104, and is stacked on the stackingunit 105. When thepositive electrode plate 108 is placed at a predetermined position on theconveyor 110, thesupport member 116 provided at the end of theconveyor 110 is turned 90 degrees from the standby position, pressing thepositive electrode 108, Misalignment is prevented. The standby position side of thesupport member 116 is a position that is parallel to the traveling direction of thetransport conveyor 110 and does not interfere with the position where thepositive electrode plate 108 is disposed. In addition, a plurality ofsupport members 116 are provided at the end of theconveyor 110 so that eachpositive plate 108 can be supported at least at two locations on the left and right with respect to the traveling direction of theconveyor 110. Theconveyor 110 is stopped when thepositive electrode plate 108 is transferred, and when thesupport member 116 is operated, theconveyor 110 moves a predetermined length in the direction of thenip roll 104 to perform intermittent operation.

正極板108が搬送コンベア110により搬送され、ニップロール104に近づくと、サポート部材116が90度旋回し待機位置側に戻る。そして、正極板108が、上セパレータ巻出部102から送り出された上セパレータ100と、下セパレータ101に挟み込まれた状態でニップロール104に挟み込まれて重ねられるようになっている。以後、ニップロール104から送り出された上セパレータ100および下セパレータ101を連続セパレータSと呼ぶ。  When thepositive plate 108 is transported by thetransport conveyor 110 and approaches thenip roll 104, thesupport member 116 turns 90 degrees and returns to the standby position side. Thepositive electrode plate 108 is sandwiched between theupper separator 100 fed from the upperseparator unwinding section 102 and thenip roll 104 while being sandwiched between thelower separators 101. Hereinafter, theupper separator 100 and thelower separator 101 sent out from thenip roll 104 are referred to as a continuous separator S.

ニップロール104から送り出された連続セパレータSは、ロールヒータ117および2本の棒ヒータ118によって表面が加熱され接着剤が溶融し連続セパレータS同士が接着される。実施の形態1と同様に、ロールヒータ117が接着領域Aを加熱し溶着し、2本の棒ヒータ118が連続セパレータSの接着領域Bを加熱し溶着する。これにより、連続セパレータSに袋状領域Cが形成され、袋状領域Cの中に一枚づつ正極板108が収納されるようになる。また、タブ111は、袋状領域Cから外部に露出するように形成される。なお、図3において、袋状領域Cの中に収納された正極板108を点線で示した。  The surface of the continuous separator S sent out from thenip roll 104 is heated by theroll heater 117 and the twobar heaters 118, the adhesive is melted, and the continuous separators S are bonded to each other. As in the first embodiment, theroll heater 117 heats and welds the bonding area A, and the twobar heaters 118 heat and bond the bonding area B of the continuous separator S. Thereby, the bag-like region C is formed in the continuous separator S, and thepositive plates 108 are accommodated one by one in the bag-like region C. Thetab 111 is formed so as to be exposed from the bag-like region C to the outside. In FIG. 3, thepositive electrode plate 108 accommodated in the bag-like region C is indicated by a dotted line.

周囲が接着された連続セパレータSは送りロール119に送られ、積層部105側に下降する。次に、送りロール119の下方に供給された負極板109が、移載ハンド123により、連続セパレータSの左右に配置される。次に、負極板109の下面に、接着剤塗布ノズル122より接着剤121が塗布される。接着剤塗布ノズル122は負極板109の下方に備えられており、負極板109が連続セパレータSの左右に配置される毎に上昇し接着剤121の塗布を行った後、下降し次の負極板109の配置を待機するようになっている。接着剤塗布ノズル122は、下降している連続セパレータSの両側に備えられている。次に、移載ハンド123が、連続セパレータSの外周面で正極板108の表面および裏面に連続セパレータSを介して負極板109を貼り付ける。これにより、負極板109、連続セパレータS、正極板108、連続セパレータS、負極板109の順に重ねられることになる。負極板109の貼付は、正極板108の一つ飛び毎に行われる。(正極板108に対して両側に負極板109を貼り付けた後、次に送られた正極板108の両側には負極板109を貼り付けずに、その次の正極板108の両側に負極板109を貼り付ける。)なお、図3において、接着剤121の負極板109の裏面への塗布状態を点線にて示した。  The continuous separator S to which the periphery is bonded is sent to thefeed roll 119 and descends to thelaminated portion 105 side. Next, thenegative electrode plate 109 supplied below thefeed roll 119 is placed on the left and right of the continuous separator S by thetransfer hand 123. Next, the adhesive 121 is applied to the lower surface of thenegative electrode plate 109 from theadhesive application nozzle 122. Theadhesive application nozzle 122 is provided below thenegative electrode plate 109. Thenegative electrode plate 109 is raised whenever thenegative electrode plate 109 is arranged on the left and right sides of the continuous separator S, and after applying the adhesive 121, the adhesive plate is lowered. 109 is placed on standby. Theadhesive application nozzle 122 is provided on both sides of the descending continuous separator S. Next, thetransfer hand 123 affixes thenegative electrode plate 109 to the front and back surfaces of thepositive electrode plate 108 on the outer peripheral surface of the continuous separator S via the continuous separator S. Thereby, thenegative electrode plate 109, the continuous separator S, thepositive electrode plate 108, the continuous separator S, and thenegative electrode plate 109 are stacked in this order. The attachment of thenegative electrode plate 109 is performed for each jump of thepositive electrode plate 108. (After attaching thenegative electrode plate 109 to both sides of thepositive electrode plate 108, thenegative electrode plate 109 is not attached to both sides of thepositive electrode plate 108 sent next, and the negative electrode plate is applied to both sides of the nextpositive electrode plate 108. 109.) In FIG. 3, the application state of the adhesive 121 to the back surface of thenegative electrode plate 109 is indicated by a dotted line.

次に、重ねられた正極板108および負極板109が、スイング機構120のより積層部105に連続セパレータSを介してジグザグ状に積み重ねられる。所定の厚さに積み重ねられると、スイング機構120の出口部に備えられているカッタによって上セパレータ100および下セパレータ101が切断され、積層体である2次電池の製造が完了する。次に、積層部105に形成された2次電池が次工程に搬送される。なお、図3において積層部105内の積層状態を示すため、積層部105は1点鎖線にて示した。  Next, the stackedpositive electrode plate 108 andnegative electrode plate 109 are stacked in a zigzag manner on the stackedportion 105 of theswing mechanism 120 via the continuous separator S. When stacked to a predetermined thickness, theupper separator 100 and thelower separator 101 are cut by the cutter provided at the outlet of theswing mechanism 120, and the manufacture of the secondary battery as a stacked body is completed. Next, the secondary battery formed in thestacked unit 105 is transported to the next process. Note that in FIG. 3, thelaminated portion 105 is indicated by a one-dot chain line in order to show a laminated state in thelaminated portion 105.

このように、実施の形態2の2次電池製造装置は、正極板108が袋状領域Cに収納されているので搬送時等に積層した位置からずれることがない。また、正極板108と負極板109が一枚の連続セパレータSで仕切られているので、コンパクトに2次電池を形成することができる。また、シート状の連続セパレータSで連続的に積層することが出来るので大容量の2次電池の製造に対応することが出来る。さらに、接着剤121を用いて負極板109を連続セパレータSに貼り付けているので、正極板108と負極板109の両方の周囲を連続セパレータSで接着しなくても正極板108のみの周囲の連続セパレータSを接着するだけで効率よく2次電池を製造することができる。なお、実施の形態2において、正極板108と負極板109の配置を逆にしても同様の効果が得られる。  Thus, in the secondary battery manufacturing apparatus according to the second embodiment, since thepositive electrode plate 108 is stored in the bag-like region C, the secondary battery manufacturing apparatus does not deviate from the stacked position during transportation. Further, since thepositive electrode plate 108 and thenegative electrode plate 109 are partitioned by one continuous separator S, a secondary battery can be formed in a compact manner. Moreover, since it can laminate | stack continuously with the sheet-like continuous separator S, it can respond to manufacture of a high capacity | capacitance secondary battery. Further, since thenegative electrode plate 109 is attached to the continuous separator S using the adhesive 121, the periphery of only thepositive electrode plate 108 can be obtained without bonding the periphery of both thepositive electrode plate 108 and thenegative electrode plate 109 with the continuous separator S. A secondary battery can be manufactured efficiently simply by adhering the continuous separator S. In the second embodiment, the same effect can be obtained even if the arrangement of thepositive electrode plate 108 and thenegative electrode plate 109 is reversed.

1 セパレータ供給部
11 グリップチャック
30 正極板供給機構
31 負極板供給機構
45 回転チャック機構
100 上セパレータ
101 下セパレータ
102 上セパレータ巻出部
103 下セパレータ巻出部
104 ニップロール
106 正極材
107 負極材
108 正極板
109 負極板
110 搬送コンベア
112 移載ハンド
114 アーム
116 サポート部材
117 ロールヒータ
118 棒ヒータ
119 送りロール
120 スイング機構
121 接着剤
122 塗布ノズル
123 移載ハンド
S 連続セパレータ
PN 電極板
DESCRIPTION OF SYMBOLS 1 Separator supply part 11 Grip chuck 30 Positive electrodeplate supply mechanism 31 Negative electrodeplate supply mechanism 45Rotary chuck mechanism 100Upper separator 101Lower separator 102 Upperseparator unwinding part 103 Lowerseparator unwinding part 104Nip roll 106Positive electrode material 107Negative electrode material 108Positive electrode plate 109Negative electrode 110Conveyor 112Transfer hand 114Arm 116Support member 117Roll heater 118Bar heater 119Feed roll 120Swing mechanism 121 Adhesive 122Coating nozzle 123 Transfer hand S Continuous separator PN Electrode plate

Claims (2)

Translated fromJapanese
正極板の仕切りに用いられる連続セパレータに、複数の正極板を所定の間隔を保持して配置し、前記正極板に設けられたタブが前記連続セパレータの外側になるように配置し、
他方の正極板の仕切りに用いられる連続セパレータを、前記正極板が配置された連続セパレータに重ね合わせて、
前記正極板の周囲の連続セパレータ同士を
加熱溶融により貼り合わせて接着し、
裏面に接着剤の塗布された負極板を前記連続セパレータの外周面で正極板の表面および裏面に、前記連続セパレータを介して貼り付けた後、次に送られた正極板の表面および裏面には負極板を貼り付けずに、その次に送られた正極板の表面および裏面に、前記連続セパレータを介して貼り付けて、
正極板と負極板が連続セパレータを介して交互に重なり合うように積層状に収納することを特徴とする2次電池製造方法。
In the continuous separator used for partitioning the positive electrode plate, a plurality of positive electrode plates are arranged while maintaining a predetermined interval, and the tab provided on the positive electrode plate is arranged outside the continuous separator,
Superimposing the continuous separator used for partitioning the other positive electrode plate on the continuous separator on which the positive electrode plate is arranged,
Bonding the continuous separators around the positive electrode plate together by heat melting,
After the negative electrode plate with the adhesive applied to the back surface is pasted to the front and back surfaces of the positive electrode plate on the outer peripheral surface of the continuous separator via the continuous separator, the front and back surfaces of the positive electrode plate sent next Without pasting the negative electrode plate, pasted to the front and back surfaces of the positive electrode plate sent next through the continuous separator,
A method for producing a secondary battery, wherein the positive electrode plate and the negative electrode plate are housed in a stacked form such that the positive electrode plate and the negative electrode plate are alternately overlapped via a continuous separator.
正極板を挟み込む正極板の下側の連続セパレータと、正極板の上側に位置する他方の連続セパレータと、
前記連続セパレータに正極板を所定の間隔を保持し、正極板に設けられたタブを連続セパレータの外側になるように配置する移載ハンドと、
連続セパレータと正極板と他方の連続セパレータとを重ね合わせるニップロールと、
ニップロールから送り出された連続セパレータの端部と正極板毎の間隙を加熱溶融させるヒータと、
連続セパレータのヒータによる加熱溶融と、連続セパレータへの正極板の配置とを連動させて連続セパレータを間欠移動させる搬送コンベアと、
他方の電極板である負極板の裏面に接着剤を塗布する接着剤塗布ノズルと、
裏面に接着剤の塗布された負極板を前記連続セパレータの外周面で正極板の表面および裏面に、前記連続セパレータを介して貼り付けた後、次に送られた正極板の表面および裏面には負極板を貼り付けずに、その次に送られた正極板の表面および裏面に、前記連続セパレータを介して貼り付ける他方の移載ハンドと、
前記連続セパレータを正極板と負極板が前記連続セパレータを介して交互に重なり合うように折り込むスイング機構と、
折り込まれた連続セパレータを積層状に収納する収納箱と、
からなる2次電池製造装置。
A continuous separator on the lower side of the positive electrode plate sandwiching the positive electrode plate, the other continuous separator located on the upper side of the positive electrode plate,
A transfer hand that holds the positive electrode plate at a predetermined interval on the continuous separator and arranges tabs provided on the positive electrode plate to be outside the continuous separator;
A nip roll for superimposing the continuous separator, the positive electrode plate and the other continuous separator;
A heater for heating and melting the end of the continuous separator fed from the nip roll and the gap for each positive electrode plate;
A transport conveyor that intermittently moves the continuous separator in conjunction with the heating and melting by the heater of the continuous separator and the arrangement of the positive electrode plate on the continuous separator;
An adhesive application nozzle for applying an adhesive to the back surface of the negative electrode plate which is the other electrode plate;
After the negative electrode plate with the adhesive applied to the back surface is pasted to the front and back surfaces of the positive electrode plate on the outer peripheral surface of the continuous separator via the continuous separator, the front and back surfaces of the positive electrode plate sent next Without attaching the negative electrode plate, the other transfer hand that is attached to the front and back surfaces of the positive electrode plate sent next through the continuous separator,
A swing mechanism for folding the continuous separator so that the positive electrode plate and the negative electrode plate alternately overlap with each other through the continuous separator;
A storage box for storing the folded continuous separator in a stack; and
A secondary battery manufacturing apparatus comprising:
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