JP6618121B2 - ホールを含んでいる電池セル - Google Patents
ホールを含んでいる電池セル Download PDFInfo
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- JP6618121B2 JP6618121B2 JP2016551718A JP2016551718A JP6618121B2 JP 6618121 B2 JP6618121 B2 JP 6618121B2 JP 2016551718 A JP2016551718 A JP 2016551718A JP 2016551718 A JP2016551718 A JP 2016551718A JP 6618121 B2 JP6618121 B2 JP 6618121B2
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- Prior art keywords
- electrode
- battery
- battery cell
- battery case
- negative electrode
- Prior art date
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- 150000003624 transition metals Chemical group 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- BDZBKCUKTQZUTL-UHFFFAOYSA-N triethyl phosphite Chemical compound CCOP(OCC)OCC BDZBKCUKTQZUTL-UHFFFAOYSA-N 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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Description
正極、負極、及び前記正極と負極との間に介在する分離膜を含む積層構造の電極組立体が電池ケースの収納部に装着されており、
前記電極組立体には、電池ケースから正極又は負極に至る1つ以上のホールが形成されており、
前記ホールに対応する電池ケースの部位には透明部材のウィンドウが形成されている構造で構成されている。
図1の構成のように、正極及び分離膜に互いに連通する一つのホールがそれぞれ形成されている電極組立体を組み立て、これをパウチ型電池ケースに内蔵した後、1M LiPF6リチウム塩が含まれたEC/EMC系電解液を注液し、電極に含浸させた後、シールして電池セルを製造した。このとき、電極組立体のホールに対応するパウチ型電池ケースの部位には開口が穿孔されており、前記開口には、シクロオレフィン系フィルムが付着されたウィンドウが形成されている。
実施例1で製造された電池セルを対象として、4.2V〜2.5Vで充放電を行い、充放電サイクルによる容量維持率を測定し、その結果を図6に示す。
110 正極
111 ホール
120 分離膜
121 ホール
130 負極
140 連通構造
151 正極端子
152 負極端子
160 本体部
300 電池セル
311 正極
312 正極
321 分離膜
322 分離膜
331 負極
332 負極
340 電極組立体
351 電池ケース
352 電池ケース
360 ウィンドウ
370 ホール
380 連通構造
400 電池セル
411 正極
412 正極
421 分離膜
422 分離膜
431 負極
432 負極
440 電極組立体
451 電池ケース
452 電池ケース
461 ウィンドウ
462 ウィンドウ
471 ホール
472 ホール
500 電池セル
511 正極
512 正極
521 分離膜
531 負極
532 負極
540 電極組立体
551 電池ケース
552 電池ケース
561 ウィンドウ
562 ウィンドウ
571 ホール
572 ホール
Claims (13)
- 正極、負極、及び前記正極と負極との間に介在する分離膜を含む積層構造の電極組立体が電池ケースの収納部に装着されており、
前記電極組立体には、電池ケースから負極に至る1つ以上のホールが形成されており、
前記ホールに対応する電池ケースの部位には、ラマン分光法により負極を観察するための透明部材のウィンドウが形成されており、
前記分離膜に形成されているホールの面積が、電極に形成されているホールの面積に比べて小さく、
前記負極の活物質が炭素材料であり、
前記電極組立体は、ウィンドウが位置する電池ケースの一側から、1番目の電極が正極であり、2番目の電極が負極であり、3番目の電極が正極であり、4番目の電極が負極であり、前記4番目の電極の観察のために、1番目の電極から3番目の電極まで連通するホールが穿孔されており、
前記透明部材がシクロオレフィン系フィルムからなることを特徴とする、電池セル。 - 前記電池ケースが、樹脂層と金属層を含むラミネートシートのパウチ型ケースであることを特徴とする、請求項1に記載の電池セル。
- 前記電極組立体が、分離膜シートが介在している正極シートと負極シートが巻き取られている構造のジェリーロール型電極組立体、分離膜が介在した状態で1つ以上の正極板と1つ以上の負極板が積層されているスタック型電極組立体、または正極板と負極板を含む積層型ユニットセルが分離膜シートによって巻き取られているスタック及びフォールディング型電極組立体であることを特徴とする、請求項1に記載の電池セル。
- 前記電極組立体及び電池ケースには2つ以上のホール及びウィンドウが形成されていることを特徴とする、請求項1に記載の電池セル。
- 前記2つ以上のホール及びウィンドウが、それぞれ互いに異なる部位に形成されていることを特徴とする、請求項4に記載の電池セル。
- 前記2つ以上のホールが、電池ケースの一側、または対向側、または一側及び対向側から観察できるように形成されていることを特徴とする、請求項4に記載の電池セル。
- 前記ホールの面積が、平面視で電池セルの一面の全面積に対して1〜15%の大きさであることを特徴とする、請求項1に記載の電池セル。
- 前記分離膜に形成されているホールの面積が、電極に形成されているホールの面積に対して60〜90%の大きさであることを特徴とする、請求項1に記載の電池セル。
- 前記電池ケースには、電極組立体のホールに対応する部位に開口が穿孔されており、前記開口に透明部材が付着されてウィンドウを形成していることを特徴とする、請求項1に記載の電池セル。
- 前記透明部材が、接着剤又は接着テープにより付着されていることを特徴とする、請求項1に記載の電池セル。
- 前記接着剤が、エポキシ接着剤、セラミック接着剤、及びアクリル接着剤からなる群から選択されるいずれか1つ以上であることを特徴とする、請求項10に記載の電池セル。
- 前記接着テープが、ポリイミドテープ、ポリエステルテープ、及びポリエチレンテープからなる群から選択されるいずれか1つ以上であることを特徴とする、請求項10に記載の電池セル。
- 前記電池セルがリチウム二次電池であることを特徴とする、請求項1に記載の電池セル。
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KR1020140021024A KR101970813B1 (ko) | 2014-02-24 | 2014-02-24 | 홀을 포함하고 있는 전지셀 |
KR10-2014-0021024 | 2014-02-24 | ||
PCT/KR2015/001016 WO2015126074A1 (ko) | 2014-02-24 | 2015-01-30 | 홀을 포함하고 있는 전지셀 |
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US10910679B2 (en) * | 2016-07-19 | 2021-02-02 | Uchicago Argonne, Llc | Photo-assisted fast charging of lithium manganese oxide spinel (LiMn2O4) in lithium-ion batteries |
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JP2019102399A (ja) * | 2017-12-08 | 2019-06-24 | 日本電信電話株式会社 | 光透過型電池、その電池を用いたデバイス、及び電池残量の判定方法 |
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US11050093B2 (en) * | 2018-06-25 | 2021-06-29 | Eskra Technical Products, Inc. | Bipolar lead acid battery cells with increased energy density |
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JP2017510940A (ja) | 2017-04-13 |
KR101970813B1 (ko) | 2019-04-19 |
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CN106062996A (zh) | 2016-10-26 |
KR20150099896A (ko) | 2015-09-02 |
US20170047559A1 (en) | 2017-02-16 |
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EP3093907A4 (en) | 2017-06-28 |
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