KR101032290B1 - 파우치 및 이를 포함하는 이차전지 - Google Patents
파우치 및 이를 포함하는 이차전지 Download PDFInfo
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- KR101032290B1 KR101032290B1 KR1020100018385A KR20100018385A KR101032290B1 KR 101032290 B1 KR101032290 B1 KR 101032290B1 KR 1020100018385 A KR1020100018385 A KR 1020100018385A KR 20100018385 A KR20100018385 A KR 20100018385A KR 101032290 B1 KR101032290 B1 KR 101032290B1
- Authority
- KR
- South Korea
- Prior art keywords
- pouch
- sealing part
- sealing
- sealing portion
- battery
- Prior art date
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Abstract
본 발명은 파우치 전지 실링부의 일부 또는 전체에 추가 실링부를 포함함으로써 외부로부터의 수분 침투와 내부로부터 전해액 누출을 효과적으로 막을 수 있어 장기 보존 성능이 개선되어 전지의 성능을 향상시킬 수 있다.
Description
도 2는 실링부를 포함하는 통상의 파우치형 전지이고,
도 4~11은 본 발명의 일 실시 양태에 따른 파우치형 전지를 나타낸 것이며,
도 12는 실시예와 비교예에 따라 제조된 전지의 보존 기간에 따른 방전 저항 측정 그래프이다.
보존기간 | 용량보존율(%) | |
비교예 | 실시예 | |
0주 | 100 | 100 |
3주 | 83.9 | 85.1 |
6주 | 70.5 | 73.6 |
10주 | 51.4 | 57 |
보존기간 | 저항증가율(%) | |
비교예 | 실시예 | |
0주 | 0 | 0 |
3주 | 2.9 | 4.8 |
6주 | 26.4 | 21.0 |
10주 | 55.9 | 39.9 |
Claims (17)
- 상부시트와 하부시트가 실링되는 제1실링부를 포함하며,
상기 제1실링부가 형성된 면 중 적어도 어느 한 면 이상의 일부 또는 전부에 알루미늄 금속 박, 또는 알루미늄 금속 박의 적어도 일면이 전기절연성을 가지는 물질로 도포되는 제2실링부를 포함하는 것을 특징으로 하는 파우치.
- 제 1항에 있어서, 상기 제2실링부는 불연속적으로 형성되는 것을 특징으로 하는 파우치.
- 제1항에 있어서, 상기 제2실링부는 제1실링부가 형성된 전면(全面)에 형성되는 것을 특징으로 하는 파우치.
- 제1항에 있어서, 상기 제2실링부는 상기 제1실링부의 끝단면으로부터 형성되는 것을 특징으로 하는 파우치.
- 제4항에 있어서, 상기 제1실링부의 끝단면은 외측 끝단면인 것을 특징으로 하는 파우치.
- 제4항에 있어서, 상기 제1실링부의 끝단면은 내측 끝단면인 것을 특징으로 하는 파우치.
- 제 1항에 있어서, 상기 전기절연성을 가지는 물질은 폴리올레핀계 고분자, 폴리에스터계 고분자, 및 나일론 중에서 선택되는 것을 특징으로 하는 파우치.
- 제 1항에 있어서, 상기 제2실링부의 두께는 0.1~400㎛인 것을 특징으로 하는 파우치.
- 상부시트와 하부시트가 실링되는 제1실링부를 포함하며, 상기 제1실링부가 형성된 면 중 적어도 어느 한 면 이상의 일부 또는 전부에 제2실링부가 형성되는 것으로, 상기 제2실링부는 전극 탭이 위치된 영역을 제외한 부위에 형성되는 것을 특징으로 하는 파우치.
- 제 9항에 있어서, 상기 전극 탭은 동일한 방향으로 형성된 것을 특징으로 하는 파우치.
- 제 9항에 있어서, 상기 전극 탭은 서로 다른 방향으로 형성된 것을 특징으로 하는 파우치.
- 상부시트와 하부시트가 실링되는 제1실링부를 포함하며, 상기 제1실링부가 형성된 파우치의 4면 중 적어도 어느 한 면 이상의 제1실링부가 형성된 일부에 제2실링부가 형성되는 것으로, 상기 제2실링부는 상기 제1실링부의 끝단면으로부터 형성되는 것을 특징으로 하는 파우치.
- 제12항에 있어서, 상기 제1실링부의 끝단면은 외측 끝단면인 것을 특징으로 하는 파우치.
- 제12항에 있어서, 상기 제1실링부의 끝단면은 내측 끝단면인 것을 특징으로 하는 파우치.
- 제 1항 내지 제14항 중 어느 한 항에 있어서,상기 파우치를 구성하는 상부시트 및 상기 하부시트는 각각 내부층, 금속층 및 외부층이 순차적으로 적층되어 구성된 것을 특징으로 하는 파우치.
- 제1항, 제9항, 또는 제12항 중 어느 한 항에 따른 파우치를 포함하는 이차전지.
- 제 16항에 있어서, 상기 이차전지는 리튬 이차전지인 것을 특징으로 하는 이차전지.
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CN2010800195438A CN102414864A (zh) | 2009-03-02 | 2010-03-02 | 软包及包括其的二次电池 |
JP2011552881A JP2012519366A (ja) | 2009-03-02 | 2010-03-02 | パウチおよびこれを含む二次電池 |
PCT/KR2010/001279 WO2010101384A2 (ko) | 2009-03-02 | 2010-03-02 | 파우치 및 이를 포함하는 이차전지 |
EP20100748926 EP2405506B1 (en) | 2009-03-02 | 2010-03-02 | Pouch, and secondary battery comprising same |
US12/822,751 US8557431B2 (en) | 2009-03-02 | 2010-06-24 | Pouch and secondary battery comprising the same |
JP2012196503A JP2013008691A (ja) | 2009-03-02 | 2012-09-06 | パウチおよびこれを含む二次電池 |
JP2013050909A JP2013118194A (ja) | 2009-03-02 | 2013-03-13 | パウチおよびこれを含む二次電池 |
US14/021,307 US20140011078A1 (en) | 2009-03-02 | 2013-09-09 | Pouch and secondary battery comprising the same |
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KR1020090017672 | 2009-03-02 | ||
KR20090017672 | 2009-03-02 |
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EP (1) | EP2405506B1 (ko) |
JP (3) | JP2012519366A (ko) |
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CN (1) | CN102414864A (ko) |
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KR20150137454A (ko) * | 2014-05-29 | 2015-12-09 | 주식회사 엘지화학 | 하이브리드 고주파 실링을 이용한 이차전지의 제조 방법 |
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TWI406444B (zh) * | 2010-03-05 | 2013-08-21 | Prologium Technology Co | 電能供應系統之封裝結構及其應用之電能供應系統 |
KR101229228B1 (ko) * | 2010-12-20 | 2013-02-04 | 주식회사 엘지화학 | 수분 차단성이 향상된 이차전지 |
WO2012177083A2 (ko) * | 2011-06-22 | 2012-12-27 | 주식회사 엘지화학 | 파우치 및 파우치형 이차전지 |
WO2013012290A2 (ko) * | 2011-07-21 | 2013-01-24 | 한화케미칼 주식회사 | 전지용 포장재 및 그의 제조방법 |
KR101297014B1 (ko) | 2011-08-31 | 2013-08-14 | 삼성에스디아이 주식회사 | 이차 전지 |
KR101893958B1 (ko) | 2011-12-09 | 2018-08-31 | 삼성에스디아이 주식회사 | 이차 전지 |
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CN102414864A (zh) | 2012-04-11 |
EP2405506A4 (en) | 2012-11-07 |
EP2405506B1 (en) | 2015-05-06 |
KR20100099063A (ko) | 2010-09-10 |
JP2013118194A (ja) | 2013-06-13 |
WO2010101384A2 (ko) | 2010-09-10 |
US20100310930A1 (en) | 2010-12-09 |
WO2010101384A3 (ko) | 2010-12-16 |
US8557431B2 (en) | 2013-10-15 |
US20140011078A1 (en) | 2014-01-09 |
JP2013008691A (ja) | 2013-01-10 |
EP2405506A2 (en) | 2012-01-11 |
JP2012519366A (ja) | 2012-08-23 |
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