JP6154403B2 - 非対称構造の電池セル及びこれを含む電池パック - Google Patents
非対称構造の電池セル及びこれを含む電池パック Download PDFInfo
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- 239000012528 membrane Substances 0.000 claims description 18
- 230000008569 process Effects 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 11
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- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 238000011161 development Methods 0.000 claims description 7
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 6
- 229910001416 lithium ion Inorganic materials 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
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- 238000000465 moulding Methods 0.000 claims description 4
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
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- 239000002390 adhesive tape Substances 0.000 description 2
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Description
陽極と陰極との間に分離膜が介在している電極組立体が電池ケースに内蔵されている電池セルであって、前記電極組立体の外周面のうち少なくとも1辺の一側には、平面上に電極組立体を横切る中心軸を基準にして非対称構造が形成されて構成されている。
金属層及び樹脂層を含むラミネートシート生地を電池ケースの展開図の形状に切り取って電池ケースシートを準備する過程;
前記電池ケースシートを対称軸を基準にして折り曲げて折曲部を形成する過程;
前記折曲部の内側から外側方向に外力を加え、下記の電極組立体の一側偏向部に対応する曲線部を形成する過程;
電池ケースシートの内部に外力を加えて収納部を形成する過程;
前記収納部に一側偏向部が形成された非対称構造の電極組立体を内蔵する過程;及び
前記電池ケースシートを密封する過程;
を含んでもよい。
20、120、320、420、550 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、552 収納部
24 上端部
30、110、210、310、410、561 電極組立体
31 陽極タップ
32 陰極タップ
40 陽極リード
41 陰極リード
50 絶縁フィルム
100、100’、300、400、500 電池セル
111、311、411 1辺
112、212、312、212a、212b、212c、212d、312a、312b、312c、312d、412a、412b、412c、412d 電極
113 垂直軸
114 垂直面
130、130’、330、430、543、552 曲線部
200 電池パック
215a、215b、215c、215d 最大長さ
315a、315b、315c、315d 最大幅
321、421 外面構造
412 2辺
521、522、540 形状
523 中心軸
541 折曲部
542、551 外力
562 熱融着密封
Claims (19)
- 陽極と陰極との間に分離膜が介在している電極組立体が電池ケースに内蔵されている電池セルであって、前記電池ケースは、金属層及び樹脂層を含むラミネートシートからなり、かつ、外周部を形成する第1、第2、第3、及び、第4の辺を有し、
前記第1の辺と前記第3の辺が対向し、かつ前記第2の辺と前記第4の辺が対向しており、
前記電極組立体の外周部には平面上に電極組立体を横切る中心軸を基準にして非対称部が形成されており、前記非対称部は、前記電池ケースの前記第1の辺と前記第2の辺との間に位置しており、
前記非対称部は曲線部に形成されており、
前記電池ケースの内周部及び前記外周部は、前記曲線部に沿う形状で形成されており、
前記曲線部に沿った前記電池ケースの前記外周部と前記内周部との間の距離は、前記電池ケースの前記第3及び第4の辺における前記外周部と前記内周部との間の距離に比べて相対的に小さいことを特徴とする電池セル。 - 前記電池セルは、各電極端子が一側端部に共に位置したり、両側に対向する各端部、または一側端部とそれに隣接した側面端部にそれぞれ位置する板状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。
- 前記曲線部は、一つ以上の円弧からなっており、前記円弧の凸状部位が電池セルの外面方向に向かうように形成されたことを特徴とする、請求項1に記載の電池セル。
- 前記曲線部は、電極組立体の長辺を基準にして10%〜200%のサイズの半径を有する円弧状であることを特徴とする、請求項3に記載の電池セル。
- 前記曲線部は、一つの半径と一つの円弧中心を有する単一円弧の形状からなることを特徴とする、請求項4に記載の電池セル。
- 前記曲線部は、それぞれ異なる半径及び/または円弧中心を有する二つ以上の円弧が連続した形状からなることを特徴とする、請求項5に記載の電池セル。
- 前記曲線部を構成している各円弧は、一側方向に半径が連続的に減少する形状をなしていることを特徴とする、請求項6に記載の電池セル。
- 前記曲線部に沿った前記電池ケースの前記外周部と前記内周部との間の距離は、前記電池ケースの前記第3及び第4の辺における前記外周部と前記内周部との間の距離に対比して50%〜90%であることを特徴とする、請求項1に記載の電池セル。
- 前記電池セルは、パウチ型ケースに電極組立体が内蔵され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から請求項10のいずれか一つによる電池セルを製造する電池セルの製造方法であって、
金属層及び樹脂層を含むラミネートシート生地を電池ケースの展開図の形状に切り取って電池ケースシートを準備する過程;
前記電池ケースシートを対称軸を基準にして折り曲げて折曲部を形成する過程;
前記折曲部の内側から外側方向に外力を加え、下記の電極組立体の一側偏向部に対応する曲線部を形成する過程;
電池ケースシートの内部に外力を加えて収納部を形成する過程;
前記収納部に一側偏向部が形成された非対称構造の電極組立体を内蔵する過程;及び
前記電池ケースシートを密封する過程;
を含むことを特徴とする電池セルの製造方法。 - 前記展開図の形状は、前記電池ケースの形状に対応する形状であることを特徴とする、請求項11に記載の電池セルの製造方法。
- 前記外力を加える方法は、ディープドローイング(deep drawing)成形法であることを特徴とする、請求項11に記載の電池セルの製造方法。
- 請求項1から請求項10のいずれか一つによる電池セルを二つ以上含んでいる電池パック。
- 前記各電池セルは、垂直及び/または平面に配列されていることを特徴とする、請求項14に記載の電池パック。
- 前記の垂直に配列される各電池セルには、互いに同一の位置に曲線部が形成されていることを特徴とする、請求項14に記載の電池パック。
- 前記の平面に配列される各電池セルには、両外側に曲線部が形成されていることを特徴とする、請求項14に記載の電池パック。
- 請求項14による電池パックを電源として含んでいることを特徴とするデバイス。
- 前記デバイスは、携帯電話、携帯用コンピューター、スマートフォン、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選ばれることを特徴とする、請求項18に記載のデバイス。
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EP2802033A4 (en) | 2016-03-09 |
EP2802033B1 (en) | 2018-02-21 |
CN104115324A (zh) | 2014-10-22 |
US9478773B2 (en) | 2016-10-25 |
KR20130105549A (ko) | 2013-09-25 |
KR101348366B1 (ko) | 2014-01-06 |
EP2802033A1 (en) | 2014-11-12 |
KR20130105271A (ko) | 2013-09-25 |
US20150013151A1 (en) | 2015-01-15 |
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