JP4376472B2 - 極板セパレータ装着方法及び装置 - Google Patents

極板セパレータ装着方法及び装置 Download PDF

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Publication number
JP4376472B2
JP4376472B2 JP2001061790A JP2001061790A JP4376472B2 JP 4376472 B2 JP4376472 B2 JP 4376472B2 JP 2001061790 A JP2001061790 A JP 2001061790A JP 2001061790 A JP2001061790 A JP 2001061790A JP 4376472 B2 JP4376472 B2 JP 4376472B2
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Japan
Prior art keywords
separator
hot plate
battery
cutting
joining
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Expired - Lifetime
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JP2001061790A
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JP2002260625A (ja
Inventor
真介 福田
貢 高木
義廣 坊木
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Panasonic Corp
Toyota Motor Corp
Panasonic Holdings Corp
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Panasonic Corp
Toyota Motor Corp
Matsushita Electric Industrial Co Ltd
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Priority to JP2001061790A priority Critical patent/JP4376472B2/ja
Priority to US10/087,794 priority patent/US6755930B2/en
Publication of JP2002260625A publication Critical patent/JP2002260625A/ja
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/743—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using the same tool for both joining and severing, said tool being monobloc or formed by several parts mounted together and forming a monobloc
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/741—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area characterised by the relationships between the joining step and the severing step
    • B29C65/7411—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area characterised by the relationships between the joining step and the severing step characterised by the temperature relationship between the joining step and the severing step
    • B29C65/7412—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area characterised by the relationships between the joining step and the severing step characterised by the temperature relationship between the joining step and the severing step the joining step and the severing step being performed at different temperatures
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29C66/0042—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined
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    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
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    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
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    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
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    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/81821—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the thermal insulating constructional aspects of the welding jaws
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    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/1378—Cutter actuated by or secured to bonding element
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1702—For plural parts or plural areas of single part
    • Y10T156/1744—Means bringing discrete articles into assembled relationship
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Description

【０００１】
【発明の属する技術分野】
本発明は電池の極板に袋状のセパレータを装着する極板セパレータ装着方法及び装置に関するものである。
【０００２】
【従来の技術】
角形電池は、複数枚の方形の負極板と正極板をセパレータを介して交互に積層した極板群を電解液とともに電槽内に挿入配置して構成されている。また、その極板群において、負極板と正極板の間にセパレータを介装して積層する方法として、正極板又は負極板に袋状のセパレータを装着した状態で負極板と正極板を交互に積層する方法がある。
【０００３】
このように極板に袋状のセパレータを装着する方法としては、図６に示すように、まず（ａ）シート状のセパレータ２を極板１の両面を覆うように配置し、次に（ｂ）極板１の周囲のセパレータ２を接合すべき辺に、接合部３の幅に対応する幅の超音波接合工具３１を当て、セパレータ２を加圧しながらそのシート面方向に超音波振動を付与することによりセパレータ２を超音波接合し、次に（ｃ）接合部３の中央部をカッター３２にて切断することにより、接合部３にて袋状に形成されたセパレータ２が装着された極板１を連続的に製造している。
【０００４】
【発明が解決しようとする課題】
ところで、従来のセパレータの装着方法では合成樹脂繊維布から成るセパレータ２を超音波接合しているが、繊維状のものを超音波振動による摩擦熱で溶融させるためには大きな振幅の超音波振動を付与する必要があり、ランニングコストが高くなるばかりでなく、接合する際の超音波振動の影響が極板１に伝播し、極板１の活物質が脱落して微小短絡を誘発する原因になるという問題があり、また接合部３をカッター３２で切断する際に、セパレータ２の樹脂がカッター３２の刃に付着して切断能力が短期間で低下するため、カッター３２の寿命が短く、間接材料コストやカッター交換のための稼働停止のためにコスト高になるという問題がある。
【０００５】
本発明は、上記従来の問題点に鑑み、セパレータを袋状に接合する際に極板の活物質が脱落して微小短絡を生じる恐れがなく、また接合部を工具交換なしに長期にわたって安定して切断でき、コスト低下を図れる極板セパレータ装着方法及び装置を提供することを目的としている。
【０００６】
【課題を解決するための手段】
本発明の極板セパレータ装着方法は、極板の両面を覆うようにシート状のセパレータを配置するセパレータ配置工程と、極板の周囲のセパレータを接合すべき辺に沿って接合幅に対応する幅の熱板を当てて熱溶着するセパレータ接合工程と、セパレータの接合幅のほぼ中央部に熱板を押し当ててセパレータを切断する切断工程とを有するものであり、セパレータを熱溶着にて接合するので、振動を伴わず、活物質が脱落して微小短絡を誘発する恐れがなく、また熱板にて局部的に熱を伝播し、樹脂を昇華させて切断するので、接合部を工具交換なしに長期にわたって安定して切断でき、コスト低下を図ることができる。
【０００７】
また、セパレータ接合工程と切断工程を、セパレータ切断用の突起部を有する単一の熱板を用いて一工程で行うと、接合と切断を一工程で行うことができるため、工数を削減でき、大幅なコスト低下を図ることができる。
【０００８】
また、少なくともセパレータ接合工程で、熱板とは反対側でクッション材を介してセパレータを支持すると、熱板とセパレータの接触状態を良好にでき、品質の良い接合部を形成することができる。
【０００９】
また、セパレータ接合工程で、熱板とセパレータとの間に保護シートを介装して熱溶着すると、熱板に溶融した樹脂が付着するのを防止でき、熱板の清掃・メンテナンスを減らし、設備の稼働率を向上することができる。
【００１０】
また、本発明の極板セパレータ装着装置は、極板の両面を覆うように配置したセパレータの極板周囲の接合すべき辺を接合し、その接合部の中央部を切断する極板セパレータ装着装置であって、接合幅に対応する幅の熱板から成り、かつその接合幅のほぼ中央部に切断用の突起部を設けた接合・切断手段を備えたものであり、微小短絡を誘発する恐れなく接合できるとともに、接合部を工具交換なしに長期にわたって安定して切断できてコスト低下を図ることができ、さらに接合と切断を一工程で行うことができるため、工数を削減でき、大幅なコスト低下を図ることができる。
【００１１】
また、接合・切断手段は、切断用突起部を形成する切断用熱板とその両側の接合用熱板を断熱材を介して一体化して構成し、切断用熱板と接合用熱板をそれぞれのヒータにて加熱するようにすると、接合用熱板と切断用熱板の温度を個別に条件設定でき、一工程にて接合と切断を適切に行うことができる。
【００１２】
また、極板の両面を覆うように配置したセパレータの極板周囲の接合すべき辺を接合し、その接合部の中央部を切断する極板セパレータ装着装置であって、接合幅に対応する幅の接合用熱板と、接合部のほぼ中央部を切断する切断用熱板とを備えた構成でも、上記と同様に微小短絡を誘発する恐れなく接合できるとともに、接合部を工具交換なしに長期にわたって安定して切断できてコスト低下を図ることができる。
【００１３】
また、セパレータの接合部の背面側にクッション材を配置すると、熱板とセパレータの接触状態を良好して品質の良い接合部を形成することができる。
【００１４】
また、接合用熱板とセパレータとの間に保護シートを介在し、かつこの保護シートを逐次供給・回収する手段を設けると、熱板に溶融した樹脂が付着するのを防止でき、熱板の清掃・メンテナンスを減らし、設備の稼働率を向上することができる。
【００１５】
【発明の実施の形態】
（第１の実施形態）
以下、本発明の極板セパレータ装着方法及び装置の第１の実施形態について、図１、図２を参照して説明する。なお、極板１にセパレータ２を装着する工程の内、接合及び切断工程以外は、図６を参照して説明した従来例と同じであり、同一構成要素については同一参照符号を付して説明を省略し、相違点のみを説明する。
【００１６】
本実施形態は、図１に示すように、単一の熱板１１にてセパレータ２を接合するとともに切断するようにしている。接合・切断手段としての熱板１１は、接合幅に対応する幅を有するとともに、その接合幅のほぼ中央部に切断用の突起部１２が突設されている。熱板１１の材料としては、熱伝導性の優れているアルミニウム又はその合金が望ましく、さらに熱板１１としての性質上、寿命を考慮して強度の高いジュラルミン系が最適である。熱板１１の形状としては、例えば突起部１２の幅が０．２ｍｍ、高さが０．２ｍｍ、その両側の肩幅が０．６ｍｍで、接合部幅に対応する総幅が１．４ｍｍとされている。
【００１７】
以上の構成において、極板１の周囲のセパレータ２の接合すべき辺に沿って熱板１１を押し当てることにより、熱板１１の幅に対応する幅でセパレータ２が熱溶着して接合されるとともに、その接合部３の中央部は突起部１２によって局部的に熱が伝播し、セパレータ２の樹脂が昇華して切断される。
【００１８】
かくして、セパレータ２を熱溶着にて接合するので、振動を伴わず、活物質が脱落して微小短絡を誘発する恐れがなく、また熱板１１にてセパレータ２を切断するので、接合部３を工具交換なしに長期にわたって安定して切断でき、コスト低下を図ることができ、また、突起部１２を有する単一の熱板１１を用いて接合と切断を一工程で行うことができるため、工数を削減でき、大幅なコスト低下を図ることができる。
【００１９】
図１の例では、単一部材から成る熱板１１を用いた例を示したが、図２に示すように、接合・切断手段として切断用突起部１２を形成する切断用熱板１４とその両側の接合用熱板１５を断熱材１６を介して一体化して構成した熱板１３を用い、切断用熱板１４と接合用熱板１５をそれぞれのヒータ１７、１８にて加熱するように構成するのが望ましい。断熱材１６としては、耐熱性に優れた材料で、最高使用温度の高い（４００〜６００℃）石綿や熱伝導率の低い泡ガラスなどが適している。
【００２０】
このような熱板１３を用いると、切断用熱板１４と接合用熱板１５の温度をヒータ１７、１８にて個別に条件設定でき、一工程にて接合と切断を適切に行うことができる。
【００２１】
（第２の実施形態）
上記実施形態では、単一の熱板１１、１３にて接合と切断を一工程で行う例を示したが、図３（ａ）、（ｂ）に示すように、接合用熱板１９と切断用熱板２０をそれぞれ別途に用い、図３（ａ）に示すように第１工程で接合用熱板１９にてセパレータ２を接合して接合部３を形成し、その後図３（ｂ）に示すように第２工程で切断用熱板２０で接合部３の中央部を切断してもよい。
【００２２】
接合用熱板１９は、接合部３の幅に対応した幅寸法（例えば１．４ｍｍ）とされ、また先端面の幅方向中央部には接触面圧を確保するための凹溝１９ａを形成している。接合用熱板１９の設定温度は、熱板材質の熱伝導率やセパレータ２の材質によって変化するが、２００〜２４０℃程度が望ましい。低すぎると樹脂が十分に溶けず、溶着できなかったり、接合強度が低下する。高すぎると、樹脂が溶けきってしまい、溶着面がなくなったり、熱板からの輻射熱によってセパレータ２の接合部３に隣接する部分が切断したりする恐れがある。また、接合用熱板１９の押圧力は、面圧換算で２．８〜４．２ＭＰａ程度が望ましく、押し当て時間は０．６ｓｅｃ程度が好ましい。本実施例では、設定温度２４０℃、押圧力４．２ＭＰａ、押圧時間０．６ｓｅｃで接合を行っている。
【００２３】
切断用熱板２０は、幅寸法が０．２ｍｍ程度とされ、設定温度は熱板材質の熱伝導率やセパレータ２の材質によって変化するが、３００〜３４０℃程度に設定される。また、切断用熱板２０の押圧力は、面圧換算で４．２〜４．９ＭＰａ程度が望ましい。本実施例では、設定温度３１０℃、押圧力４．９ＭＰａ、押圧時間０．２ｓｅｃで切断を行っている。
【００２４】
（第３の実施形態）
上記第２の実施形態における接合工程では、セパレータ２の背面側は単純に支持している例を示したが、図４に示すように、セパレータ２の背面側の支持面に耐熱性の高い材質のテープなどのクッション材２１を配設し、このクッション材２１を介して支持するのが好ましい。
【００２５】
このようにセパレータ２の背面側をクッション材２１を介して支持すると、接合用熱板１９とセパレータ２の接触状態を良好にして品質の良い接合部３を形成することができる。
【００２６】
また、本実施形態は、接合用熱板１９による接合工程について例示したが、第１の実施形態の熱板１１や、第２の実施形態の熱板１３による接合・切断工程においても、同様に支持面にクッション材２１を配設することにより、同様の効果を得ることができる。
【００２７】
（第４の実施形態）
上記第２の実施形態における接合工程では、接合用熱板１９とセパレータ２を直接接触させる例を示したが、図５に示すように、耐熱性の高い保護テープ２２を接合用熱板１９とセパレータ２の間に介装するのが好ましい。
【００２８】
図５において、保護テープ２２は一定以上の張力が作用すると繰り出し可能に構成された供給リール２３に巻回されており、繰り出した保護テープ２２は接合用熱板１９の先端面を通してモータ（図示せず）にて巻き取り駆動可能な巻取リール２４に巻回されており、巻取リール２４を定期的に数ｍｍ程度づつ巻き取るように構成されている。
【００２９】
このように、保護テープ２２を介装し、定期的に移動させて常にきれいな面を保てるようにすることにより、熱溶着の繰り返しでセパレータ２の焼けかすや溶けかすが接合用熱板１９の先端面に付着して、接合部３の品質を低下させる恐れを無くすことができ、定期的に接合用熱板１９の表面清掃を行う手間を解消することができ、設備稼働率を向上することができる。
【００３０】
【発明の効果】
本発明の極板セパレータ装着方法及び装置によれば、以上の説明から明らかなように、極板の周囲のセパレータを接合すべき辺に沿って接合幅に対応する幅の熱板を当てて熱溶着にて接合し、セパレータの接合幅のほぼ中央部に熱板を押し当ててセパレータを切断するようにしているので、振動を伴わず、活物質が脱落して微小短絡を誘発する恐れがなく、また熱板にて局部的に熱を伝播し、樹脂を昇華させて切断するので、接合部を工具交換なしに長期にわたって安定して切断でき、コスト低下を図ることができる。
【００３１】
また、セパレータ接合工程と切断工程を、セパレータ切断用の突起部を有する単一の熱板を用いて一工程で行うと、接合と切断を一工程で行うことができるため、工数を削減でき、大幅なコスト低下を図ることができる。
【００３２】
また、少なくともセパレータ接合工程で、熱板とは反対側でクッション材を介してセパレータを支持すると、熱板とセパレータの接触状態を良好にでき、品質の良い接合部を形成することができる。
【００３３】
また、セパレータ接合工程で、熱板とセパレータとの間に保護シートを介装して熱溶着すると、熱板に溶融した樹脂が付着するのを防止でき、熱板の清掃・メンテナンスを減らし、設備の稼働率を向上することができる。
【００３４】
また、切断用熱板とその両側の接合用熱板を断熱材を介して一体化して構成し、切断用熱板と接合用熱板をそれぞれのヒータにて加熱するようにすると、接合用熱板と切断用熱板の温度を個別に条件設定でき、一工程にて接合と切断を適正に行うことができる。
【図面の簡単な説明】
【図１】本発明の第１の実施形態の極板セパレータ装着工程の縦断正面図である。
【図２】同実施形態の極板セパレータ装着工程の縦断正面図である。
【図３】本発明の第２の実施形態の極板セパレータ装着工程の縦断正面図である。
【図４】本発明の第３の実施形態におけるセパレータ接合工程の縦断正面図である。
【図５】本発明の第４の実施形態におけるセパレータ接合工程の縦断正面図である。
【図６】従来例の極板セパレータ装着工程の縦断正面図である。
【符号の説明】
１ 極板
２ セパレータ
３ 接合部
１１ 熱板（接合・切断手段）
１２ 突起部
１３ 熱板（接合・切断手段）
１４ 切断用熱板
１５ 接合用熱板
１６ 断熱材
１７ ヒータ
１８ ヒータ
１９ 接合用熱板
２０ 切断用熱板
２１ クッション材
２２ 保護テープ
２３ 供給リール
２４ 巻取リール

Claims (7)

  1. 電池の極板の両面を覆うようにシート状の樹脂製セパレータを配置するセパレータ配置工程と、電池の極板の周囲の樹脂製セパレータを、接合すべき辺に沿って接合幅に対応する幅の熱板を当てるとともに、熱板とは反対側でクッション材を介して樹脂製セパレータを支持して熱溶着する樹脂製セパレータ接合工程と、樹脂製セパレータの接合幅のほぼ中央部に熱板を押し当てて樹脂製セパレータを切断する切断工程とを有することを特徴とする電池の極板セパレータ装着方法。
  2. セパレータ接合工程と切断工程を、セパレータ切断用の突起部を有する単一の熱板を用いて一工程で行うことを特徴とする請求項１記載の電池の極板セパレータ装着方法。
  3. セパレータ接合工程で、熱板と樹脂製セパレータとの間に保護シートを介装して熱溶着することを特徴とする請求項１記載の電池の極板セパレータ装着方法。
  4. 電池の極板の両面を覆うように配置した樹脂製セパレータの極板周囲の接合すべき辺を接合し、その接合部の中央部を切断する電池の極板セパレータ装着装置であって、接合幅に対応する幅の熱板から成り、かつその接合幅のほぼ中央部に切断用の突起部を設けた接合・切断手段を備えたことを特徴とする電池の極板セパレータ装着装置。
  5. 接合・切断手段は、切断用突起部を形成する切断用熱板とその両側の接合用熱板を断熱材を介して一体化して構成し、切断用熱板と接合用熱板をそれぞれのヒータにて加熱するようにしたことを特徴とする請求項４記載の電池の極板セパレータ装着装置。
  6. 電池の極板の両面を覆うように配置した樹脂製セパレータの電池の極板周囲の接合すべき辺を接合し、その接合部の中央部を切断する電池の極板セパレータ装着装置であって、接合幅に対応する幅の接合用熱板と、樹脂製セパレータの接合部の背面側に配置されたクッション材と、接合部のほぼ中央部を切断する切断用熱板とを備えたことを特徴とする電池の極板セパレータ装着装置。
  7. 接合用熱板と樹脂製セパレータとの間に保護シートを介在し、かつこの保護シートを逐次供給・回収する手段を設けたことを特徴とする請求項６記載の電池の極板セパレータ装着装置。
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