JP2007250413A - 非水電解液二次電池 - Google Patents
非水電解液二次電池 Download PDFInfo
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- JP2007250413A JP2007250413A JP2006074213A JP2006074213A JP2007250413A JP 2007250413 A JP2007250413 A JP 2007250413A JP 2006074213 A JP2006074213 A JP 2006074213A JP 2006074213 A JP2006074213 A JP 2006074213A JP 2007250413 A JP2007250413 A JP 2007250413A
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- Prior art keywords
- battery
- lid
- case
- electrolyte
- secondary battery
- Prior art date
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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
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Abstract
【解決手段】ケースおよび蓋を備え、前記ケースおよび前記は少なくとも外面が絶縁性樹脂フィルムで被覆された金属板からなり、前記ケースと前記蓋とが巻き締め方式で気密封口された非水電解液二次電池において、前記蓋に絶縁部材を介して電解液注液孔を設けた端子を形成したことを特徴とする。
【選択図】図1
Description
[実施例1]
厚さ0.8mmのアルミニウム合金(JIS3003)板の両面にポリプロピレン(PP)フィルムを熱圧着して約100μmの絶縁層で被覆した金属板を作製した。次に、この金属板を打ち抜き、絞り加工をすることで幅100mm×厚み20mm×深さ80mmの有底の電池ケースを作製した。
ケースと蓋の構成を、図2で示したのと同じ3ピース缶としたこと以外は、実施例1と同様にして、実施例2の電池を作製した。
アルミニウム合金(JIS3003)板の両面に、ポリプロピレン(PP)に代えてポリエチレンテレフタレート(PET)を熱圧着したこと以外は実施例1と同様にして、実施例3の電池を作製した。
アルミニウム合金板とポリプロピレン(PP)フィルムの間に無水マレイン酸変性ポリプロピレンをはさみ熱圧着したこと以外は実施例1と同様にして、実施例4の電池を作製した。
アルミ合金板の代わりにニッケルメッキ鉄板を用いたこと以外は実施例1と同様にして、実施例5の電池を作製した。
ポリプロピレン(PP)フィルムの被覆厚みを10μmとしたこと以外は実施例1と同様にして、実施例6の電池を作製した。
ケースと蓋を巻き締めする際に、巻き締めの接合部に厚み50μmのエチレンブタジエンゴム板を挿入したこと以外は実施例1と同様にして、実施例7の電池を作製した。
アルミ合金板の片側にのみポリプロピレン(PP)フィルムで被覆し、被覆した面を電池外面としたこと以外は実施1と同様にして、実施例8の電池を作製した。
アルミ合金板の片側をポリプロピレン(PP)フィルムで被覆し、他面をポリエチレンテレフタラート(PET)で被覆し、PETで被覆した面を電池外面としたこと以外は実施1と同様にして、実施例9の電池を作製した。
ケースと蓋の構成を図2で示したのと同じ3ピース缶とし、断面構造を図5で示したのと同じ、上面の蓋に正極端子を設け、下面の蓋に負極端子を設け、端子を設ける蓋が異なる構成としたこと以外は実施例1と同様にして、実施例10の電池を作製した。
ケースと蓋の構成を図1で示したのと同じ2ピース缶とし、断面構造を図10で示したのと同じ、巻き締め部の上面から端子の上面が突出している構造としたこと以外は実施例1と同様にして、実施例11の電池を作製した。
アルミニウム合金板を絶縁性樹脂フィルムで被覆せず、電池完成後にケースを熱収縮性樹脂チューブで被覆したこと以外は実施例1と同様にして、比較例1の電池を作製した。
電池ケースはPPで被覆したが、蓋は絶縁性樹脂フィルムで被覆しなかったこと以外は実施例1と同様にして、比較例2の電池を作製した。作製した。
正極端子に電解液注液孔となる貫通孔を設けず、電解液を満たしたケースに蓋と端子部と電極群からなる一体物を含浸してから巻き締め加工で密閉化したこと以外は実施例1と同様にして、比較例3の電池を作製した。
正極端子に電解液注液孔となる貫通孔を設けず、蓋と端子部と電極群からなる一体物のうち電極群の部分のみを電解液に含浸したのちにケースに収納し、その後巻き締め加工で密閉化したこと以外は実施例1と同様にして、比較例4の電池を作製した。
以上の実施例1〜11および比較例1〜4の電池について、単電池の生産性および気密不良発生の有無、組電池の生産性および不良発生の有無、および組電池の寿命性能を比較した。
各単電池を100セルずつ製造した際の生産性の比較を行った。ここで「単電池の生産性」とは、100セルずつ生産する際に要した時間の相対値で示してあり、値が小さいほど所要時間が短く、生産性が高いことを意味する。ここでは実施例1の電池の生産に要した時間を100とした。
各単電池を100セルずつ製造し、電池を1kPsの減圧下で1分間保持した際の重量減少の有無から、気密不良発生の有無を調べた。
以上の各電池を用いて8直列の組電池を5セット作製した際の生産性を比較した。ここで「組電池の生産性」は10セット作製する際に要した時間の相対値で示してあり、値が小さいほど所要時間が短く、生産性が高いことを意味する。ここでは実施例1の電池を用いて組電池を作製した時間を100とした。また、組電池作製時の不良発生の有無も調べた。ここでの「不良発生」とは、単電池からの液漏れ、単電池間の短絡などを意味する。
25℃環境下で、1時間率の定電流で4.1Vまで充電し、さらに4.1Vの定電圧で充電時間の合計が3時間となるまで充電した後に、1時間率の電流で3.0Vまで放電する充放電を3回繰り返し、3回目の放電容量を初期放電容量と定めた。5セットの放電容量の平均値を初期平均放電容量とした。
2、2’ 蓋
3 正極端子
4 負極端子
5 巻き締め部
6 絶縁部材
7 電解液注液孔
8 集電体
9 電極群
Claims (1)
- ケースおよび蓋を備え、前記ケースおよび前記蓋は少なくとも外面が絶縁性樹脂フィルムで被覆された金属板からなり、前記ケースと前記蓋とが巻き締め方式で気密封口された非水電解液二次電池において、前記蓋に絶縁部材を介して電解液注液孔を設けた端子を形成したことを特徴とする非水電解液二次電池。
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JP2006074213A JP2007250413A (ja) | 2006-03-17 | 2006-03-17 | 非水電解液二次電池 |
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Cited By (7)
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JP2011181485A (ja) * | 2010-02-05 | 2011-09-15 | Sanyo Electric Co Ltd | 角形電池及びその製造方法ならびにこれを用いてなる組電池 |
JP2014022337A (ja) * | 2012-07-23 | 2014-02-03 | Sharp Corp | 非水系二次電池およびその注液方法 |
KR20140099796A (ko) * | 2013-02-05 | 2014-08-13 | 삼성에스디아이 주식회사 | 배터리 모듈 |
US10319957B2 (en) | 2015-09-24 | 2019-06-11 | Gs Yuasa International Ltd. | Energy storage device and energy storage apparatus |
CN110299481A (zh) * | 2019-07-18 | 2019-10-01 | 常州微宙电子科技有限公司 | 一种针式锂离子电池 |
US10516152B2 (en) | 2015-09-18 | 2019-12-24 | Gs Yuasa International Ltd. | Energy storage device |
KR20210025127A (ko) * | 2018-08-01 | 2021-03-08 | 쇼트 니혼 가부시키가이샤 | 기밀 단자 |
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JP2011181485A (ja) * | 2010-02-05 | 2011-09-15 | Sanyo Electric Co Ltd | 角形電池及びその製造方法ならびにこれを用いてなる組電池 |
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KR20140099796A (ko) * | 2013-02-05 | 2014-08-13 | 삼성에스디아이 주식회사 | 배터리 모듈 |
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