JP7600509B2 - 絶縁性コート層が形成された分離膜を含む二次電池用ユニットセル、およびその製造方法 - Google Patents
絶縁性コート層が形成された分離膜を含む二次電池用ユニットセル、およびその製造方法 Download PDFInfo
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Description
本出願は2021年1月8日付韓国特許出願第10-2021-0002664号に基づく優先権の利益を主張し、当該韓国特許出願の文献に開示されたすべての内容は本明細書の一部として含まれる。
前記ユニットセルは、タブが形成されている電極板、および分離膜を含み、
前記分離膜はベース基材の少なくとも一面に有機/無機複合多孔性コート層が形成されている第1コート部と、絶縁性コート層が形成されている第2コート部を含むことを特徴とする。
(a)タブが形成されている電極板を準備する段階;
(b)ベース基材の少なくとも一面に有機/無機複合多孔性コート層の第1コート部と、絶縁性コート層の第2コート部を形成して分離膜を製造する段階;および
(c)前記電極と分離膜を積層する段階;
を含み、
前記第1コート部と第2コート部は同時にコートすることによって形成される二次電池用ユニットセルの製造方法が提供される。
二次電池用ユニットセルであって、
前記ユニットセルは、タブが形成されている電極板、および分離膜を含み、
前記分離膜はベース基材の少なくとも一面に有機/無機複合多孔性コート層が形成されている第1コート部と、絶縁性コート層が形成されている第2コート部を含む二次電池用ユニットセルが提供される。
二次電池用ユニットセルを製造する方法であって、
(a)タブが形成されている電極板を準備する段階;
(b)ベース基材の少なくとも一面に有機/無機複合多孔性コート層の第1コート部と、絶縁性コート層の第2コート部を形成して分離膜を製造する段階;および
(c)前記電極と分離膜を積層する段階;
を含み、
前記第1コート部と第2コート部は同時にコートすることによって形成される二次電池用ユニットセルの製造方法が提供される。
Claims (13)
- 二次電池用ユニットセルであって、
前記二次電池用ユニットセルは、タブが形成されている電極板、および分離膜を含み、
前記分離膜はベース基材の少なくとも一面に有機/無機複合多孔性コート層が形成されている第1コート部と、絶縁性コート層が形成されている第2コート部を含み、
前記第2コート部が、前記電極板の前記タブが形成される位置に位置する、二次電池用ユニットセル。 - 前記タブは前記電極板の一側に形成されており、前記タブの形成方向を基準として、前記タブと重なる部位の前記分離膜の一端には前記第2コート部が形成されており、残りの部分には前記第1コート部が前記第2コート部と平行に形成されており、前記タブが前記分離膜の第2コート部に位置するように電極が前記分離膜に積層されている、請求項1に記載の二次電池用ユニットセル。
- 前記タブは前記電極板の一側または両側に形成されており、前記タブの形成方向を基準として前記タブと重なる部位の前記分離膜の一端とこれに対応する前記分離膜の他端には前記第2コート部が形成されており、残りの部分には前記第1コート部が前記第2コート部と平行に形成されており、前記タブが一端または両端の前記第2コート部に位置するように電極が前記分離膜に積層されている、請求項1または2に記載の二次電池用ユニットセル。
- 前記電極板は正極板である、請求項1から3のいずれか一項に記載の二次電池用ユニットセル。
- 前記二次電池用ユニットセルは負極板をさらに含み、前記正極板と前記負極板の間に前記分離膜が介在する、請求項4に記載の二次電池用ユニットセル。
- 前記負極板は前記正極板よりもその大きさが4面でさらに大きい、請求項5に記載の二次電池用ユニットセル。
- 前記二次電池用ユニットセルは、前記分離膜と同一に前記第1コート部と前記第2コート部を含む追加分離膜をさらに含み、前記追加分離膜は前記正極板または前記負極板で前記分離膜が対面しない他面に積層されている、請求項5または6に記載の二次電池用ユニットセル。
- 前記分離膜の第2コート部と前記追加分離膜の第2コート部は互いに接合されている、請求項7に記載の二次電池用ユニットセル。
- 前記絶縁性コート層はPVdF系物質を含む高分子コート層である、請求項1から8のいずれか一項に記載の二次電池用ユニットセル。
- 請求項1から9のいずれか一項に記載の二次電池用ユニットセルを含む、電極組立体。
- 請求項10に記載の電極組立体、およびリチウム塩非水系電解質を含む、リチウム二次電池。
- 請求項1から9のいずれか一項に記載の二次電池用ユニットセルを製造する方法であって、
(a)タブが形成されている電極板を準備する段階;
(b)ベース基材の少なくとも一面に有機/無機複合多孔性コート層の第1コート部と、絶縁性コート層の第2コート部を形成して分離膜を製造する段階;および
(c)電極と分離膜を積層する段階;
を含む、二次電池用ユニットセルの製造方法。 - 前記第1コート部と第2コート部は同時にコートすることによって形成される、請求項12に記載の二次電池用ユニットセルの製造方法。
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| KR1020210002664A KR102839459B1 (ko) | 2021-01-08 | 2021-01-08 | 절연성 코팅층이 형성된 분리막을 포함하는 이차전지용 유닛셀, 및 이의 제조방법 |
| KR10-2021-0002664 | 2021-01-08 | ||
| PCT/KR2022/000335 WO2022149921A1 (ko) | 2021-01-08 | 2022-01-07 | 절연성 코팅층이 형성된 분리막을 포함하는 이차전지용 유닛셀, 및 이의 제조방법 |
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| JP2002170552A (ja) | 2000-12-01 | 2002-06-14 | Nec Corp | 蓄電素子及びその製造方法 |
| JP2020530185A (ja) | 2018-05-11 | 2020-10-15 | エルジー・ケム・リミテッド | 難燃性二次電池用分離膜 |
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| KR102152143B1 (ko) * | 2016-11-24 | 2020-09-04 | 주식회사 엘지화학 | 전극판의 경계 부위에 절연 보강부가 형성된 분리막을 포함하는 전극조립체 |
| CN108389999A (zh) * | 2018-01-23 | 2018-08-10 | 惠州市旭然新能源有限公司 | 有机、无机复合涂覆多孔性隔离膜、制备方法及其锂离子电池 |
| KR102874645B1 (ko) * | 2019-06-17 | 2025-10-23 | 삼성에스디아이 주식회사 | 전극 조립체 및 이를 포함하는 이차 전지 |
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2021
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- 2022-01-07 JP JP2023519247A patent/JP7600509B2/ja active Active
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- 2022-01-07 WO PCT/KR2022/000335 patent/WO2022149921A1/ko not_active Ceased
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002170552A (ja) | 2000-12-01 | 2002-06-14 | Nec Corp | 蓄電素子及びその製造方法 |
| JP2020530185A (ja) | 2018-05-11 | 2020-10-15 | エルジー・ケム・リミテッド | 難燃性二次電池用分離膜 |
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| JP2023544012A (ja) | 2023-10-19 |
| KR102839459B1 (ko) | 2025-07-25 |
| ES3048385T3 (en) | 2025-12-10 |
| KR20220100333A (ko) | 2022-07-15 |
| EP4207470A4 (en) | 2024-05-01 |
| EP4207470B1 (en) | 2025-10-01 |
| EP4207470A1 (en) | 2023-07-05 |
| WO2022149921A1 (ko) | 2022-07-14 |
| PL4207470T3 (pl) | 2025-12-15 |
| HUE073501T2 (hu) | 2026-01-28 |
| CN116420276A (zh) | 2023-07-11 |
| US20230378605A1 (en) | 2023-11-23 |
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