JP5320717B2 - 扁平型電気化学セル - Google Patents
扁平型電気化学セル Download PDFInfo
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- JP5320717B2 JP5320717B2 JP2007256430A JP2007256430A JP5320717B2 JP 5320717 B2 JP5320717 B2 JP 5320717B2 JP 2007256430 A JP2007256430 A JP 2007256430A JP 2007256430 A JP2007256430 A JP 2007256430A JP 5320717 B2 JP5320717 B2 JP 5320717B2
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- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
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- 229920006267 polyester film Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
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- 229920000232 polyglycine polymer Polymers 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
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- 229920005629 polypropylene homopolymer Polymers 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
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- 239000012748 slip agent Substances 0.000 description 1
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- RYYWUUFWQRZTIU-UHFFFAOYSA-K thiophosphate Chemical compound [O-]P([O-])([O-])=S RYYWUUFWQRZTIU-UHFFFAOYSA-K 0.000 description 1
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- 229910052719 titanium Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- 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
Description
以下、本発明に係る扁平型電気化学セルの一例であるリチウムイオン電池について図面を参照しながら説明する。図1は本実施形態に係るリチウムイオン電池1の斜視図であり、図2はリチウムイオン電池1を分解した状態を示す斜視図である。図1及び図2に示すように、リチウムイオン電池1は、リチウムイオン電池本体2及び包装材5から構成されており、包装材5に収納されたリチウムイオン電池本体2は、その周縁5cを密封することにより、防湿性が付与される。
1)延伸ポリエチレンテレフタレート/延伸ナイロン
2)延伸ナイロン/延伸ポリエチレンテレフタレート
また、包装材料の機械適性(包装機械、加工機械の中での搬送の安定性)、表面保護性(耐熱性、耐電解質性)、二次加工してリチウムイオン電池用の包装材をエンボスタイプとする際に、エンボス時の金型と基材層との摩擦抵抗を小さくする目的で、基材層23を多層化、基材層表面にフッ素系樹脂層、アクリル系樹脂層、シリコーン系樹脂層等を設けることが好ましい。例えば、
3)フッ素系樹脂/延伸ポリエチレンテレフタレート(フッ素系樹脂は、フィルム状物、または液状コーティング後乾燥で形成)
4)シリコーン系樹脂/延伸ポリエチレンテレフタレート(シリコーン系樹脂は、フィルム状物、または液状コーティング後乾燥で形成)
5)フッ素系樹脂/延伸ポリエチレンテレフタレート/延伸ナイロン
6)シリコーン系樹脂/延伸ポリエチレンテレフタレート/延伸ナイロン
7)アクリル系樹脂/延伸ナイロン(アクリル系樹脂はフィルム状、または液状コーティング後乾燥で硬化)
まず、本実施例で用いる電気化学セル用包装材料の製造方法について説明する。まず、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(以下酸変性PPと略す)をロールコート法により塗布、焼付けし、未延伸ポリプロピレンフィルム(厚さ30μm)を熱ラミネート法により、積層して本実施例で用いる電気化学セル用包装材を得た。
次に、厚さ12μmのポリエチレンナフタレートフィルム(PENフィルム)の一方の面にマレイン酸変性ポリプロピレンをTダイ押出機で44μm厚さに押出し塗布した後、PENフィルム他方の面にマレイン酸変性ポリプロピレンをTダイ押出機で44μm厚さに押出し塗布し、タブフィルムを得た。
次に、厚さ12μmのポリエチレンナフタレートフィルム(PENフィルム)の一方の面にマレイン酸変性ポリプロピレンをTダイ押出機で44μm厚さに押出し塗布した後、PENフィルム他方の面にマレイン酸変性ポリプロピレンをTダイ押出機で44μm厚さに押出し塗布し、実施例1に係る絶縁性フィルムのサンプルを得た。
次に、上記電気化学セル用包装材料に54mm×32mmで深さ4mmのエンボス部とそのエンボス部周縁に7mm幅のシール領域を有するトレイを成形し、エンボス部に電解液を入れ、トレイの一辺において3mm×10mmで厚さ100μmのタブ1、タブ2をタブフィルムを巻き付けた状態でシート状の上記電気化学セル用包装材料で挟持し、7mm巾で周縁部をヒートシールした。そして、60℃で24時間保存した。このとき、ヒートシールは、面圧1.0MPa、シール温度190℃、シール時間3.0秒の条件で行なった。
2 リチウムイオン電池本体
4 電池タブ
5 包装材
10 絶縁性フィルム
11 ポリオレフィンフィルム
12 酸変性ポリオレフィンフィルム
13 ポリエチレンナフタレートフィルム
21 熱接着性樹脂層
22 金属箔層
23 基材層
Claims (2)
- 基材層と、金属箔層と、熱接着性樹脂層とが、少なくとも順次積層された積層体を重ね合わせて形成される包装材内部に、
正極活物質及び正極集電体から成る正極と、負極活物質及び負極集電体から成る負極と、前記正極及び負極間に充填される電解質と、を含む扁平型電気化学セル本体を収納し、
前記包装材の周縁部を熱接着して、前記扁平型電気化学セル本体を前記包装材内部に密封収納する扁平型電気化学セルにおいて、
前記包装材の周縁部に絶縁性フィルムを介在させており、
前記絶縁性フィルムが樹脂フィルムの両面にポリオレフィンフィルムを備え、
前記樹脂フィルムが前記ポリオレフィンフィルムより高融点であることを特徴とする扁平型電気化学セル。 - 前記絶縁性フィルムを構成する前記ポリオレフィンフィルムの少なくとも一方が酸変性ポリオレフィンフィルムであることを特徴とする請求項1に記載の扁平型電気化学セル。
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JP5110132B2 (ja) * | 2009-08-07 | 2012-12-26 | 大日本印刷株式会社 | 電気化学セル用包装材 |
JP6256019B2 (ja) * | 2014-01-14 | 2018-01-10 | 日産自動車株式会社 | ラミネート型電池 |
JP6135712B2 (ja) * | 2015-06-04 | 2017-05-31 | 凸版印刷株式会社 | リチウムイオン電池用外装材 |
JP6135711B2 (ja) * | 2015-06-04 | 2017-05-31 | 凸版印刷株式会社 | リチウムイオン電池用外装材 |
JP7058465B2 (ja) * | 2015-12-29 | 2022-04-22 | 大日本印刷株式会社 | 蓄電デバイス金属端子部密封用接着性フィルム |
CN107910461A (zh) * | 2017-11-09 | 2018-04-13 | 北京卫蓝新能源科技有限公司 | 一种二次电池、封装结构及其封装方法 |
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