JP2010512638A - 安全性を高めた折り曲げ形状のリチウムイオンバッテリー - Google Patents
安全性を高めた折り曲げ形状のリチウムイオンバッテリー Download PDFInfo
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title 1
- 229910001416 lithium ion Inorganic materials 0.000 title 1
- 230000035939 shock Effects 0.000 claims abstract description 13
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 230000001747 exhibiting effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
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- 239000002952 polymeric resin Substances 0.000 claims description 3
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000003792 electrolyte Substances 0.000 abstract description 24
- 230000037303 wrinkles Effects 0.000 abstract description 7
- 238000000926 separation method Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 53
- 229920000139 polyethylene terephthalate Polymers 0.000 description 32
- 239000005020 polyethylene terephthalate Substances 0.000 description 32
- 230000000052 comparative effect Effects 0.000 description 23
- 238000000034 method Methods 0.000 description 21
- 239000010408 film Substances 0.000 description 12
- 238000007789 sealing Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 239000004800 polyvinyl chloride Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 229920000915 polyvinyl chloride Polymers 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 238000002788 crimping Methods 0.000 description 2
- 235000015110 jellies Nutrition 0.000 description 2
- 239000008274 jelly Substances 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 208000033978 Device electrical impedance issue Diseases 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
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- 239000013013 elastic material Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
- H01M50/133—Thickness
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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
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Abstract
Description
冷間圧延し、ニッケル(Ni)被覆した炭素鋼シート(SPCE)を使用してトップキャップ及び円筒形容器を製造し、電極アセンブリーを円筒形容器に取り付け、その円筒形容器に、電極アセンブリーの上側末端に対応する区域で、丸みを付ける加工を行い、折り曲げ区域を形成し、ガスケットを折り曲げ区域の内側に挿入し、キャップアセンブリーを折り曲げ区域に取り付けた。続いて、折り曲げ区域の、キャップアセンブリーから離れた部分を、第一屈曲区域の曲率半径(R1)が0.6 mmになり、第二屈曲区域の曲率半径(R2)が3.65 mmになるように、容器の側部に対して65度の角度プロファイルで屈曲させた。続いて、折り曲げ及びプレス加工加工工程を行い、標準的な18650円筒形二次バッテリー(直径18 mmおよび長さ65 mmを有する)を製造した。折り曲げ区域の屈曲した前端部は、折り曲げ区域の側部から内側に向けて約2.4 mm伸びていた。
折り曲げ区域の第一屈曲区域が曲率半径(R1)1.3 mmを有し、折り曲げ区域の第二屈曲区域が曲率半径(R2)3.65 mmを有する以外は、例1と同じ様式で円筒形二次バッテリーを製造した。
折り曲げ区域の第一屈曲区域が曲率半径(R1)0.6 mmを有し、折り曲げ区域の第二屈曲区域が曲率半径(R2)0 mm(直線的)を有する以外は、例1と同じ方法で円筒形二次バッテリーを製造した。この時、第一屈曲工程の際に、容器にしわの発生が観察された。
図3に示すように、折り曲げ区域の第一屈曲区域が曲率半径(R1)1.3 mmを有し、折り曲げ区域の第二屈曲区域が曲率半径(R2)0 mm(直線的)を有する以外は、例1と同じ方法で円筒形二次バッテリーを製造した。
折り曲げ区域の第一屈曲区域が曲率半径(R1)3.65 mmを有し、折り曲げ区域の第二屈曲区域が曲率半径(R2)0.6 mmを有する以外は、例1と同じ方法で円筒形二次バッテリーを製造した。
例1の方法により製造した円筒形二次バッテリーを、電極端子を除いて、一般的なPETチューブの中に挿入し、PETチューブに熱を作用させてPETチューブを収縮させた。
例1の方法により製造した円筒形二次バッテリーを、電極端子を除いて、軟質PETチューブの中に挿入し、PETチューブに熱を作用させてPETチューブを収縮させた。
比較例1の方法により製造した円筒形二次バッテリーを、電極端子を除いて、一般的なPETチューブの中に挿入し、PETチューブに熱を作用させてPETチューブを収縮させた。
比較例2の方法により製造した円筒形二次バッテリーを、電極端子を除いて、一般的なPETチューブの中に挿入し、PETチューブに熱を作用させてPETチューブを収縮させた。
比較例2の方法により製造した円筒形二次バッテリーを、電極端子を除いて、軟質PETチューブの中に挿入し、PETチューブに熱を作用させてPETチューブを収縮させた。
比較例3の方法により製造した円筒形二次バッテリーを、電極端子を除いて、一般的なPETチューブの中に挿入し、PETチューブに熱を作用させてPETチューブを収縮させた。
例1及び例2に記載するようにして製造した30個のバッテリー、及び比較例1及び比較例2に記載するようにして製造した30個のバッテリーに、バッテリーの上下を逆さにして配置し、屈曲安全性部材が作動するまで圧力を作用させ、電流遮断部材が作動する前に電解質が漏れるか、否かを確認した。結果を下記の表1に示す。
例3及び例4に記載するようにして製造した30個のバッテリー、及び比較例4〜比較例7に記載するようにして製造した30個のバッテリーを、4 A及び4.2 Vで完全充電し、八角形のドラム中に入れ、66 rpmで、30分間間隔で150分間回転させ、インピーダンスが増加したか、及び電解質が漏れ出したか、否かを確認した。結果を下記の表2に示す。インピーダンス増加率がドラム試験後に10%未満であり、電解質が漏れ出さなかった場合、バッテリーは優れた機械的安定性を示すと決定した。
Claims (9)
- 円筒形バッテリーであって、
キャップアセンブリーが電極アセンブリーを内部に取り付けられている円筒形容器の開いた上側末端に取り付けられ、折り曲げ区域が形成されてなる構造において構築されてなり、
前記折り曲げ区域が、
前記折り曲げ区域の上側末端がゆるやかに屈曲し、前記折り曲げ区域が前記折り曲げ区域の内側に配置されたガスケットを取り囲んでなり、
屈曲した前端部が、連続的に2回屈曲し、前記屈曲した前端部が内側に伸びている状態で前記ガスケットを圧迫し、前記容器の外周部において、第一屈曲区域の曲率半径(R1)が第二屈曲区域の曲率半径(R2)より小さくなる構造に構築されてなる、円筒形バッテリー。 - 前記R1の値が0.4〜1.5 mmであり、
前記R2の値が3〜4 mmである、請求項1に記載の円筒形バッテリー。 - 前記折り曲げ区域が、前記第一屈曲区域と前記第二屈曲区域との間に直線区域が形成されるように構築されてなる、請求項1に記載の円筒形バッテリー。
- 電極端子を除く、前記円筒形容器の外側表面が、絶縁性フィルムで覆われてなり、
前記絶縁性フィルムが、高い衝撃吸収性を示す重合体樹脂から形成されてなる、請求項1に記載の円筒形バッテリー。 - 前記円筒形容器が、ステンレス鋼、鋼、アルミニウム、及びそれらの同等品からなる群から選択された材料から形成されてなり、
前記円筒形容器の厚さが0.15〜0.35 mmである、請求項1に記載の円筒形バッテリー。 - 前記屈曲した前端部が、前記折り曲げ区域の側部から40〜80の角度で傾斜してなる、請求項1に記載の円筒形バッテリー。
- 前記屈曲した前端部が、前記折り曲げ区域の側部から1〜3 mmだけ伸びている、請求項1に記載の円筒形バッテリー。
- 前記折り曲げ区域の前記屈曲した前端部を曲率半径(R1)で一次的に屈曲させ、次いで、予め決められた時間間隔を置いて、曲率半径(R2) で二次的に屈曲させる、請求項1に記載の円筒形バッテリー。
- 前記バッテリーが、振動及び衝撃に頻繁にさらされる装置の電源として使用される、請求項1に記載の円筒形バッテリー。
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KR10-2006-0125222 | 2006-12-11 | ||
KR1020060125222A KR100948001B1 (ko) | 2006-12-11 | 2006-12-11 | 안전성이 강화된 클림핑 형상의 리튬이온 이차전지 |
PCT/KR2007/005594 WO2008072841A1 (en) | 2006-12-11 | 2007-11-07 | Lithium ion battery of crimping shape of increased safety |
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JP2010512638A true JP2010512638A (ja) | 2010-04-22 |
JP5160559B2 JP5160559B2 (ja) | 2013-03-13 |
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US (2) | US9130203B2 (ja) |
EP (1) | EP2122712B1 (ja) |
JP (1) | JP5160559B2 (ja) |
KR (1) | KR100948001B1 (ja) |
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WO2022107712A1 (ja) | 2020-11-19 | 2022-05-27 | 三洋電機株式会社 | 円筒形電池 |
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US20120276441A1 (en) | 2012-11-01 |
EP2122712A4 (en) | 2010-01-27 |
US9130203B2 (en) | 2015-09-08 |
US20100021812A1 (en) | 2010-01-28 |
CN101601149B (zh) | 2012-07-18 |
JP5160559B2 (ja) | 2013-03-13 |
EP2122712B1 (en) | 2020-02-12 |
EP2122712A1 (en) | 2009-11-25 |
KR100948001B1 (ko) | 2010-03-18 |
KR20080053538A (ko) | 2008-06-16 |
WO2008072841A1 (en) | 2008-06-19 |
CN101601149A (zh) | 2009-12-09 |
US8889288B2 (en) | 2014-11-18 |
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