JP2016517610A - 段差構造を含む電池セル - Google Patents
段差構造を含む電池セル Download PDFInfo
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 4
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Abstract
Description
平面を基準として高さ方向に沿って2つ以上の電極ロールが積層された構造の電極組立体を含んでおり、
前記電極ロールは、大きさが互いに同一であるか、または少なくとも2つの電極ロールの大きさが互いに異なり、
互いに異なる大きさの電極ロールは、幅及び/又は高さにおいて1つ以上の段差構造を形成しながら積層されている構造を含むことができる。
20、130、230、330 電池ケース
20A 外側樹脂層
20B 遮断性金属層
20C 内側樹脂層
21 ケース本体
22 カバー
23、333 収納部
24 上端部
30 電極組立体
31 正極タブ
32 負極タブ
40、41、140、340 電極リード
50 絶縁フィルム
110、210、310 第1電極ロール
112、122、312、322 電極タブ
120、220、320 第2電極ロール
132、332 上部ケース
134、334 下部ケース
136a、335 第1収納部
136b、333 第2収納部
215 組立電極シート
310、320 電極ロール
Claims (25)
- 平面を基準として高さ方向に沿って2つ以上の電極ロールが積層された構造の電極組立体を含んでおり、
前記電極ロールは、大きさが互いに同一であるか、または少なくとも2つの電極ロールの大きさが互いに異なり、
互いに異なる大きさの電極ロールは、幅及び/又は高さにおいて1つ以上の段差構造を形成しながら積層されていることを特徴とする、電池セル。 - 前記電極ロールは、電極タブが突出した方向に対する垂直断面視で楕円形の巻き取り構造を形成することを特徴とする、請求項1に記載の電池セル。
- 前記電極ロールは、平面視で長方形状からなることを特徴とする、請求項1に記載の電池セル。
- 前記互いに異なる大きさの電極ロールの積層構造において、上部に位置した電極ロールと下部に位置した電極ロールとは厚さ、横幅(横の長さ)及び縦幅(縦の長さ)のうちの少なくとも1つが異なることを特徴とする、請求項1に記載の電池セル。
- 前記互いに異なる大きさの電極ロールは、平面の大きさが互いに異なることを特徴とする、請求項4に記載の電池セル。
- 前記電極ロールは、一側面が一直線上に位置するように配列された状態で積層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。
- 前記一側面は、電極タブが位置する方向の一側面であることを特徴とする、請求項6に記載の電池セル。
- 前記電極ロールの電極タブが互いに結合されて電池セルの電極端子を形成する構造であることを特徴とする、請求項1に記載の電池セル。
- 前記電極ロールのうち上下に積層された2つの電極ロールは、正極シート、負極シート、前記負極シートと正極シートとの間に介在する第1分離シート、及び前記負極シートまたは正極シートを挟んで前記第1分離シートと対面する第2分離シートからなる組立電極シートを含み、前記組立電極シートの一端と他端をそれぞれ巻き取った構造の第1電極ロール及び第2電極ロールが積層されている構造からなることを特徴とする、請求項1に記載の電池セル。
- 前記第1電極ロール及び第2電極ロールは、それぞれ組立電極シートが時計方向または反時計方向に巻き取られている構造であることを特徴とする、請求項9に記載の電池セル。
- 前記第1電極ロール及び第2電極ロールのうちの一方の電極ロールは時計方向に巻き取られている構造であり、他方の電極ロールは反時計方向に巻き取られている構造であることを特徴とする、請求項9に記載の電池セル。
- 前記電池セルは、電極ロールを電池ケースに収納し、電解質で含浸させた後、熱融着で密封した構造からなっており、正極端子及び負極端子が電池ケースの外部に突出しているパウチ型電池セルであることを特徴とする、請求項1に記載の電池セル。
- 前記電池ケースは、金属層と樹脂層のラミネートシートからなることを特徴とする、請求項12に記載の電池セル。
- 前記電池ケースは、幅と高さにおいて段差構造の収納部が形成されていることを特徴とする、請求項12に記載の電池セル。
- 前記段差構造は電極端子非形成部位に形成されていることを特徴とする、請求項14に記載の電池セル。
- 前記電池ケースは、大きさの異なる第1電極ロール及び第2電極ロールがそれぞれ収納される第1収納部及び第2収納部が形成されていることを特徴とする、請求項12に記載の電池セル。
- 前記第1収納部及び第2収納部は、厚さ、横幅(横の長さ)及び縦幅(縦の長さ)のうちの少なくとも1つが異なることを特徴とする、請求項16に記載の電池セル。
- 前記第1収納部の深さは、第2収納部の深さよりも大きいことを特徴とする、請求項16に記載の電池セル。
- 前記第1収納部の平面視の面積は、第2収納部の平面視の面積よりも大きいことを特徴とする、請求項16に記載の電池セル。
- 前記第1収納部の一側面及び第2収納部の一側面は上下に隣接する構造で形成されていることを特徴とする、請求項16に記載の電池セル。
- 前記隣接する構造で形成されている第1収納部の一側面及び第2収納部の一側面は、電極端子が位置する方向の一側面であることを特徴とする、請求項20に記載の電池セル。
- 前記電池ケースは、第1収納部が形成されている上部ケースと、第2収納部が形成されている下部ケースとからなっており、前記第1収納部及び第2収納部には、互いに大きさの異なる電極ロールがそれぞれ収納されることを特徴とする、請求項16に記載の電池セル。
- 前記電池セルは、リチウムイオン電池セルまたはリチウムイオンポリマー電池セルであることを特徴とする、請求項1に記載の電池セル。
- 請求項1乃至23のいずれか1項に記載の電池セルを電源として含んでいるデバイス。
- 前記デバイスは、携帯電話、携帯用コンピュータ、スマートフォン、タブレットPC、スマートパッド、ネットブック、LEV(Light Electronic Vehicle)、電気自動車、ハイブリッド電気自動車、プラグインハイブリッド電気自動車、及び電力貯蔵装置からなる群から選択されることを特徴とする、請求項24に記載のデバイス。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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KR20130022640 | 2013-03-04 | ||
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WO2018105276A1 (ja) * | 2016-12-06 | 2018-06-14 | 株式会社村田製作所 | 二次電池 |
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WO2014137112A1 (ko) | 2014-09-12 |
EP2966718B1 (en) | 2018-05-02 |
EP2966718A4 (en) | 2016-11-16 |
CN104871358A (zh) | 2015-08-26 |
US20150372337A1 (en) | 2015-12-24 |
KR101572836B1 (ko) | 2015-12-01 |
JP6339592B2 (ja) | 2018-06-06 |
KR20140109283A (ko) | 2014-09-15 |
EP2966718A1 (en) | 2016-01-13 |
CN104871358B (zh) | 2018-03-20 |
US10629940B2 (en) | 2020-04-21 |
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