JP5772876B2 - 電気化学セル用包装材料 - Google Patents
電気化学セル用包装材料 Download PDFInfo
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- JP5772876B2 JP5772876B2 JP2013107300A JP2013107300A JP5772876B2 JP 5772876 B2 JP5772876 B2 JP 5772876B2 JP 2013107300 A JP2013107300 A JP 2013107300A JP 2013107300 A JP2013107300 A JP 2013107300A JP 5772876 B2 JP5772876 B2 JP 5772876B2
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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
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Description
以下、図面を参照しながら本発明の第1実施形態に係る電気化学セル用包装材料110について説明する。図1は第1実施形態のリチウムイオン電池121の斜視図であり、図2は図1中のA−A線断面図である。
(1)ビガット軟化点115℃以上、融点150℃以上のホモタイプ
(2)ビガット軟化点105℃以上、融点130℃以上のエチレンープロピレンとの共重合体(ランダム共重合タイプ)
(3)融点110℃以上である不飽和カルボン酸を用い酸変性重合した単体又はブレンド物等を用いることができる。
図4は第2実施形態に係る包装材料110を示す断面図である。説明の便宜上、前述の図1〜図3に示す第1実施形態と同様の説明には同一の符号を付している。本実施形態の包装材料110は熱接着層116側の化成処理層114aには変性エポキシ樹脂を含む絶縁層114bが積層されている。絶縁層114bに用いる変性エポキシ樹脂は第1実施形態の化成処理層114aに含まれる変性エポキシ樹脂を用いることができる。
比較例1に係る電気化学セル用包装材料はアルミニウム(厚さ40μm)の両面に化成処理を施し、一方の化成処理面に、延伸ナイロンフィルム(厚さ25μm)を2液硬化型ポリウレタン系接着剤を介してドライラミネート法により貼り合わせた。次に、他の化成処理面に酸変性ポリプロピレン(厚さ23μm、以下酸変性PPと略す)とポリプロピレン(厚さ23μm、以下PPと略す)を共押出して積層した。
111a フィラー
112 基材層
113 接着層
114 バリア層
114a 化成処理層
114b 絶縁層
115 酸変性ポリオレフィン層
116 熱接着層
120 包装体
120a 収納部
120b シート部
121 リチウムイオン電池
122 リチウムイオン電池本体
123a 正極タブ
123b 負極タブ
Claims (4)
- 少なくとも樹脂フィルムからなる基材層と、最内層に配して熱接着性樹脂からなる熱接着層と、前記基材層と前記熱接着層との間に配して金属箔からなるバリア層と、を積層して構成される電気化学セル用包装材料であって、前記バリア層の少なくとも前記熱接着層側の面にはアルミナ粒子と変性エポキシ樹脂とを含む化成処理層が形成され、
前記変性エポキシ樹脂がビスフェノールAもしくはビスフェノールFを骨格中の単位として有することを特徴とする電気化学セル用包装材料。 - 前記熱接着層側に形成された前記化成処理層には変性エポキシ樹脂を含む絶縁層が積層されていることを特徴とする請求項1に記載の電気化学セル用包装材料。
- 前記絶縁層の厚みが0.5μm以上5μm以下であることを特徴とする請求項2に記載の電気化学セル用包装材料。
- 前記絶縁層の厚みが前記アルミナ粒子の粒径より大きいことを特徴とする請求項3に記載の電気化学セル用包装材料。
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