JP6343940B2 - 蓄電材料の製造装置および製造方法 - Google Patents
蓄電材料の製造装置および製造方法 Download PDFInfo
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Description
これにより、増粘剤を液体の溶媒に溶解している途中で溶解装置を止めなくても、増粘剤の溶解液の導電率から増粘剤の溶解度を判定し、増粘剤の溶解度から増粘剤の溶解液の粘度を推定して所定範囲内の粘度となるように調整することができるので、生産効率を大幅に向上することができる。
増粘剤の溶解、活物質の粉末等の分散およびこれらの粘度調整を一つの混練装置で行った場合は時間が掛かるため、活物質の損傷を招くおそれがある。しかし、増粘剤を溶媒に溶解する装置、増粘剤の溶解液の粘度を調整する装置、および粘度調整した増粘剤の溶解液に活物質の粉末等を分散・混練する装置に分けて行うことにより、混練を短時間で行うことが可能となり、活物質の損傷を抑制することができる。
これにより、溶解装置の過剰な運転を防止することができるので、省エネルギ効果を得ることができる。
本発明の蓄電材料の製造方法によれば、上述した蓄電材料の製造装置における効果と同様の効果を奏する。
本実施形態による蓄電材料の製造装置は、例えば、リチウムイオン二次電池の電極(正極および負極)を製造するための装置を構成する。リチウムイオン二次電池の電極は、アルミニウム箔や銅箔等の基材に蓄電材料として活物質材料のスラリを塗布して乾燥することにより製造される。本実施形態の蓄電材料の製造装置は、活物質材料のスラリを製造する装置である。
本実施形態の蓄電材料の製造装置について、図1を参照して説明する。蓄電材料の製造装置1は、溶解装置2と、粘度調整装置3と、混練装置4と、製造制御装置5等とを備えて構成される。
記憶部51には、増粘剤の溶解液の導電率と増粘剤の溶解液の溶解度との関係を示すデータ(図3参照)、増粘剤の溶解液の溶解度と増粘剤の溶解液の粘度との関係を示すデータ(図4参照)、活物質材料のスラリの粘度と増粘剤の溶解液の粘度との関係を示すデータ(図6参照)、増粘剤の溶解液の粘度と超音波の付与時間との関係を示すデータ(図7参照)、その他の溶解制御、粘度調整、混練制御等に関するデータが記憶されている。
次に、製造制御装置5による処理について、図2を参照して説明する。図2に示すように、増粘剤の溶解に関するデータを読み込み(ステップS1)、増粘剤および溶媒を溶解装置2に投入する(ステップS2)。そして、溶解装置2を駆動し(ステップS3)、増粘剤の溶解液の溶解度が例えば80%以上になったか否かを、増粘剤の溶解液の導電率が所定値に達したか否かにより判断する(ステップS4)。そして、増粘剤の溶解液の導電率が所定値に達したら、溶解装置2の駆動を停止する(ステップS5)。
Claims (5)
- 少なくとも増粘剤および活物質を含む蓄電材料を製造する蓄電材料の製造装置であって、
溶解したときにイオン化する粉体の前記増粘剤を液体の溶媒に溶解する溶解装置と、
前記溶解装置で溶解された溶解液の導電率を測定し、測定した導電率に基づいて、投入した前記増粘剤の総量に対する、溶解している前記増粘剤の量の割合を表す前記増粘剤の溶解度を判定する溶解度判定手段と、
前記溶解度判定手段で判定した前記増粘剤の溶解度に基づいて前記溶解液の粘度を推定する粘度推定手段と、
前記粘度推定手段で推定した前記溶解液の粘度に基づいて前記溶解液の粘度を所定範囲内の粘度となるように調整する粘度調整装置と、
を備える蓄電材料の製造装置。 - 前記蓄電材料の製造装置は、
前記粘度が調整された前記増粘剤の溶解液および前記活物質を混練する混練装置、
を備える請求項1の蓄電材料の製造装置。 - 前記溶解液の所定範囲内の粘度は、前記混練装置で混練される前記増粘剤の溶解液および前記活物質の粘度に基づいて定められる、
請求項2の蓄電材料の製造装置。 - 前記溶解度判定手段は、前記溶解装置で前記増粘剤を前記溶媒に溶解しながら前記溶解液の導電率を測定する、請求項1〜3の何れか一項の蓄電材料の製造装置。
- 少なくとも増粘剤および活物質を含む蓄電材料を製造する蓄電材料の製造方法であって、
溶解したときにイオン化する粉体の前記増粘剤を液体の溶媒に溶解する溶解工程と、
前記溶解された溶解液の導電率を測定し、測定した導電率に基づいて、投入した前記増粘剤の総量に対する、溶解している前記増粘剤の量の割合を表す前記増粘剤の溶解度を判定する溶解度判定工程と、
前記溶解度判定工程で判定した前記増粘剤の溶解度に基づいて前記溶解液の粘度を推定する粘度推定工程と、
前記粘度推定工程で推定した前記溶解液の粘度に基づいて前記溶解液の粘度を所定範囲内の粘度となるように調整する粘度調整工程と、
を備える蓄電材料の製造方法。
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JP2014004406A JP6343940B2 (ja) | 2014-01-14 | 2014-01-14 | 蓄電材料の製造装置および製造方法 |
CN201410811764.9A CN104779363B (zh) | 2014-01-14 | 2014-12-23 | 蓄电材料的制造装置以及制造方法 |
US14/584,251 US9825298B2 (en) | 2014-01-14 | 2014-12-29 | Apparatus and method for manufacturing an electricity storage material |
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