JP2017101826A - 加熱ローラー及びフィルム製造方法 - Google Patents
加熱ローラー及びフィルム製造方法 Download PDFInfo
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Abstract
Description
以下、実施形態1に係るリチウムイオン二次電池、電池用のセパレータ、耐熱セパレータについて順に説明する。
リチウムイオン二次電池に代表される非水電解液二次電池は、エネルギー密度が高く、それゆえ、現在、パーソナルコンピュータ、携帯電話、携帯情報端末等の機器、自動車、航空機等の移動体に用いる電池として、また、電力の安定供給に資する定置用電池として広く使用されている。
セパレータ12は、リチウムイオン二次電池1の正極であるカソード11と、その負極であるアノード13との間に、これらに挟持されるように配置される。セパレータ12は、カソード11とアノード13との間を分離しつつ、これらの間におけるリチウムイオンの移動を可能にする多孔質フィルムである。セパレータ12は、その材料として、例えば、ポリエチレン、ポリプロピレン等のポリオレフィンを含む。
図3は、図1に示されるリチウムイオン二次電池1の他の構成を示す模式図であって、(a)は通常の構成を示し、(b)はリチウムイオン二次電池1が急激に昇温したときの様子を示す。
リチウムイオン二次電池1の耐熱セパレータ12aの製造は特に限定されるものではなく、公知の方法を利用して行うことができる。以下では、セパレータ12がその材料として主にポリエチレンを含む場合を仮定して説明する。しかし、セパレータ12が他の材料を含む場合でも、同様の製造工程により、耐熱セパレータ12aを製造できる。
図4は、セパレータ原反12cに耐熱層4が積層された耐熱セパレータ原反12b(フィルム)を示す図である。図4(a)は耐熱セパレータ原反12bが巻き取られる態様を示しており、図4(b)は耐熱セパレータ原反12bの平面図を示し、図4(c)は、図4(b)に示される面CCに沿った断面図を示す。
図5は、セパレータ原反12bを乾燥させる乾燥装置21の構成を示す模式図である。乾燥装置21は、セパレータ原反12cに耐熱層4が塗布されたセパレータ原反12bを乾燥させる。乾燥装置21には、セパレータ原反12bが矢印A1の方向に沿って供給される。セパレータ原反12bは、2個の搬送ローラー31により搬送され、左右2列に密集して交互に配置された10個の乾燥ローラー22(加熱ローラー)に順次巻き付けられて搬送される。そして、6個の他の搬送ローラー31により搬送され、矢印A2に示す方向に沿って乾燥装置21からセパレータ原反12bが搬出される。
図6は、乾燥装置21に設けられた乾燥ローラー22の構成を示す模式断面図である。乾燥ローラー22は円筒部材23を備える。円筒部材23は外周面S3と内周面S4と内端面S1・S2とを有する。乾燥ローラー22の内端面S2側に円筒状の排出部材25が設けられる。セパレータ原反12bは、外周面S3に巻き付けられて搬送される。
吐出管24は、吐出口26から内端面S1に向かって温水Hを吐出する。吐出口26からの温水Hの吐出により増加した温水Hはその増加分だけ排出口30を通って乾燥ローラー22から排出される。
図7は、実施形態2に係る乾燥ローラー22aの構成を示す模式断面図である。前述した構成用度と同一の構成要素には同一の参照符号を付し、その詳細な説明は繰り返さない。
図9は、実施形態3に係る乾燥ローラー22cの構成を示す模式断面図である。前述した構成用度と同一の構成要素には同一の参照符号を付し、その詳細な説明は繰り返さない。
図10は、実施形態4に係る乾燥ローラー22dの構成を示す模式断面図である。図6を参照して前述した構成要素と同一の構成要素には同一の参照符号を付している。従って、これらの構成要素の詳細な説明は繰り返さない。
21 乾燥装置
22 乾燥ローラー(加熱ローラー)
23 円筒部材
24 吐出管(吐出部材)
25 排出部材
26 吐出口
27、28、29 吐出枝
30 排出口
32 吐出口(第3吐出口)
33 吐出口(第2吐出口)
34 吐出口(第1吐出口)
S1、S2 内端面(一方の端面、他方の端面)
S3 外周面
S4 内周面
H 温水(熱媒、加熱流体)
Claims (12)
- 熱媒が内部に供給されて前記内部から排出されることにより、外周面に巻き付けられたフィルムを加熱する円筒部材と、
前記円筒部材の内部において前記円筒部材の一方の端面までの距離が他方の端面までの距離以上になる位置から前記一方の端面に向かって前記熱媒を吐出する吐出部材とを備えたことを特徴とする加熱ローラー。 - 前記熱媒を排出する排出口が前記円筒部材の他方の端面に形成され、
前記吐出部材が、前記排出口を通って前記円筒部材の内部に挿入される円筒形状を有する請求項1に記載の加熱ローラー。 - 内部に供給され前記内部から排出されて前記内部を満たす熱媒により、外周面に巻き付けられたフィルムを加熱する円筒部材と、
前記円筒部材の内部において前記円筒部材の内周面に向かって前記熱媒を吐出する吐出部材とを備え、
前記円筒部材は、前記フィルムの搬送に応じて前記円筒部材の中心軸の周りに回転し、
前記吐出部材は、前記中心軸の周りに回転せず固定されていることを特徴とする加熱ローラー。 - 前記熱媒が加熱液体である請求項3に記載の加熱ローラー。
- 前記吐出部材が、前記円筒部材の軸方向に沿って形成された複数の吐出口から前記内周面に向かって前記熱媒を吐出する請求項3又は4に記載の加熱ローラー。
- 前記熱媒を排出する排出口が前記円筒部材の一方の端面に形成され、
前記吐出部材が、前記排出口を通って前記円筒部材の内部に挿入される円筒形状を有する請求項3から5のいずれか一項に記載の加熱ローラー。 - 熱媒が内部に供給されて前記内部から排出されることにより、外周面に巻き付けられたフィルムを加熱する円筒部材と、
前記円筒部材の内部に供給された熱媒を分岐して第1吐出位置及び第2吐出位置から前記円筒部材の一方の端面に向かって前記熱媒を吐出する吐出部材とを備え、
前記第2吐出位置から前記一方の端面までの距離が前記第1吐出位置から前記一方の端面までの距離よりも長いことを特徴とする加熱ローラー。 - 前記吐出部材が、前記熱媒をさらに分岐して第3吐出位置から前記円筒部材の一方の端面に向かって前記熱媒を吐出し、
前記第3吐出位置から前記一方の端面までの距離が前記第2吐出位置から前記一方の端面までの距離よりも長い請求項7に記載の加熱ローラー。 - 熱媒が内部に供給されて前記内部から排出されることにより、外周面に巻き付けられたフィルムを加熱する円筒部材と、
前記円筒部材の内部において前記円筒部材の一方の端面に向かって前記熱媒を吐出する吐出部材とを備え、
前記円筒部材の周壁は、前記一方の端面側の厚みが他方の端面側の厚みよりも厚くなっていることを特徴とする加熱ローラー。 - 前記吐出部材が、前記一方の端面までの距離が前記他方の端面までの距離よりも短い位置から前記一方の端面に向かって前記熱媒を吐出する請求項9に記載の加熱ローラー。
- 請求項1〜10のいずれか一項に記載の加熱ローラーの内部に熱媒を供給し前記内部から熱媒を排出する工程と、
前記加熱ローラーの円筒部材の外周面にフィルムを巻き付けることで、前記フィルムを加熱する工程とを包含することを特徴とするフィルム製造方法。 - 前記フィルムがリチウムイオン二次電池用セパレータである請求項11に記載のフィルム製造方法。
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CN112440464B (zh) * | 2020-10-20 | 2022-08-26 | 温州东田制版有限公司 | 一种板材覆膜压合辊 |
CN112691840A (zh) * | 2020-11-30 | 2021-04-23 | 苏州缘佑科技材料有限公司 | 固态面膜的生产装置、固态面膜及其制备方法 |
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