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1.发明授权公开(公告)号：US10985356B2
公开(公告)日：2021-04-20
申请号：US15562519
申请日：2016-04-01
发明人： Dong Jin Joo , Su Ji Lee , Kyu Young Cho , Yun Bong Kim , Jae Woong Kim
IPC分类号： H01M2/16 , H01M2/14 , H01M10/02 , H01M10/0525 , H01M10/42 , H01M10/052
摘要： The present invention relates to a composite separation membrane for a lithium secondary battery, having an excellent effect of improving the life time and safety of a battery and a lithium secondary battery including the membrane. The composite separation membrane includes a porous base layer; a heat-resistant layer formed on one side or both sides of the porous base layer; and a fusion layer formed on an outermost layer. The heat-resistant layer includes inorganic particles connected and fixed by binder polymers, and the fusion layer includes crystalline polymers in the form of particles having a melting temperature of 100° C. or higher.
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2.发明授权公开(公告)号：US10608225B2
公开(公告)日：2020-03-31
申请号：US15836111
申请日：2017-12-08
发明人： Yong Kyoung Kim , Dong Jin Joo , Young Jun Woo , Jae Woong Kim , Kyu Young Cho , Jung Moon Sung , Dong Man Cho
摘要： Provided are a micro-porous hybrid film and a method for preparing the same, and more particularly, a micro-porous hybrid film capable of improving reliability of a battery by simultaneously improving thermal stability at a high temperature and water properties, and a method for preparing the same. In addition, the present invention relates to a micro-porous hybrid film suitable for a separator of a high capacity/high output lithium secondary battery capable of increasing production stability, long term stability, and performance of the battery by improving adhesive force between a micro-porous film and a coating layer and permeability and minimizing a water content by the coating layer.
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公开(公告)号：US11969693B2
公开(公告)日：2024-04-30
申请号：US17235455
申请日：2021-04-20
发明人： Dong Jin Joo , Kyu Young Cho , Yun Bong Kim , Su Ji Lee , Won Sub Kwack , Hye Jin Kim
IPC分类号： B01D67/00 , B01D71/26 , B05C1/08 , B29C55/18 , C08J5/18 , C08J7/04 , C08L23/06 , B29C55/00 , B29K23/00
CPC分类号： B01D67/0088 , B01D71/261 , B05C1/0808 , B05C1/0813 , B05C1/0826 , B29C55/18 , C08J5/18 , C08J7/0427 , C08L23/06 , B01D2323/42 , B29C55/005 , B29K2023/0683 , C08J2323/06 , C08J2429/04 , C08J2433/04
摘要： Provided is an ultra large-width coating device applied to a consecutive process. More particularly, the present invention relates to a coating device capable of maximizing productivity by consecutively manufacturing a large-width film without reducing physical properties of the manufactured film by overcoming a problem in that a coating width is limited during a coating process using the existing contact type coating roller, and a method for manufacturing an ultra large-width membrane using the same.
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公开(公告)号：US11020710B2
公开(公告)日：2021-06-01
申请号：US15628221
申请日：2017-06-20
发明人： Dong Jin Joo , Kyu Young Cho , Yun Bong Kim , Su Ji Lee , Won Sub Kwack , Hye Jin Kim
摘要： Provided is an ultra large-width coating device applied to a consecutive process. More particularly, the present invention relates to a coating device capable of maximizing productivity by consecutively manufacturing a large-width film without reducing physical properties of the manufactured film by overcoming a problem in that a coating width is limited during a coating process using the existing contact type coating roller, and a method for manufacturing an ultra large-width membrane using the same.
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公开(公告)号：US10454087B2
公开(公告)日：2019-10-22
申请号：US15484200
申请日：2017-04-11
发明人： Dong Jin Joo , Yun Bong Kim , Su Ji Lee , Kyu Young Cho
IPC分类号： H01M2/16 , H01M10/0525
摘要： Provided are a separator for a lithium secondary battery in which an entire thickness of the separator and a ratio of a heat-resistant layer included in the separator satisfy specific ranges, respectively, and a battery including the same. The separator has significantly excellent heat resistance and mechanical strength, and it is possible to manufacture a high capacity and high output battery using the separator, thereby making it possible to significantly improve safety even in the high capacity and the high output battery.
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6.发明申请公开(公告)号：US20180097216A1
公开(公告)日：2018-04-05
申请号：US15562519
申请日：2016-04-01
发明人： Dong Jin Joo , Su Ji Lee , Kyu Young Cho , Yun Bong Kim , Jae Woong Kim
IPC分类号： H01M2/14 , H01M2/16 , H01M10/42 , H01M10/0525 , H01M10/02
CPC分类号： H01M2/1686 , H01M2/145 , H01M2/16 , H01M2/1653 , H01M2/166 , H01M10/02 , H01M10/052 , H01M10/0525 , H01M10/4235 , H01M2220/20 , Y02E60/122
摘要： The present invention relates to a composite separation membrane for a lithium secondary battery, having an excellent effect of improving the life time and safety of a battery and a lithium secondary battery including the membrane. The composite separation membrane includes a porous base layer; a heat-resistant layer formed on one side or both sides of the porous base layer; and a fusion layer formed on an outermost layer. The heat-resistant layer includes inorganic particles connected and fixed by binder polymers, and the fusion layer includes crystalline polymers in the form of particles having a melting temperature of 100° C. or higher.
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公开(公告)号：US10333126B2
公开(公告)日：2019-06-25
申请号：US15562534
申请日：2016-04-01
发明人： Dong Jin Joo , Su Ji Lee , Kyu Young Cho , Yun Bong Kim , Jae Woong Kim
IPC分类号： H01M2/16 , H01M2/14 , H01M10/02 , H01M10/0525 , H01M10/42 , H01M10/052
摘要： The present invention relates to a composite separation membrane for a lithium secondary battery having excellent lifetime and safety improvement effects, and a preparation method therefor and, more specifically, to a composite separation membrane for a lithium secondary battery, including: a porous base layer; a heat resistant layer formed on one surface or both surfaces of the porous base layer; and a fusion layer formed on the outermost layer. Inorganic particles in the heat resistant layer are connected and fixed by a binder polymer, and the fusion layer is prepared by comprising amorphous polymer particles having a glass transition temperature of 30 to 90° C. and a difference between a fusion temperature and the glass transition temperature of 60° C. or lower.
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8.发明申请Micro-Porous Polyolefin Composite Film Having Excellent Heat Resistance and Stability and Method for Producing the Same 有权具有优异的耐热性和稳定性的微孔聚烯烃复合膜及其制造方法公开(公告)号：US20140295170A1
公开(公告)日：2014-10-02
申请号：US14355729
申请日：2012-10-29
发明人： Yong Kyoung Kim , Jang-Weon Rhee , Dong Jin Joo , Young Jun Woo , Jae Woong Kim
IPC分类号： C09D7/12
CPC分类号： C09D7/1216 , C09D7/61 , H01M2/145 , H01M2/166 , H01M2/1686 , H01M10/052 , Y02T10/7011 , Y10T428/249978
摘要： Provided is a micro-porous polyolefin composite film, the micro-porous polyolefin composite film including a porous coating layer containing a polymer binder and inorganic particles, the polymer binder simultaneously employing an aqueous polymer and a non-aqueous polymer. The contents of the aqueous polymer and the non-aqueous polymer are controlled, and thus optimize heat resistance, adhesive strength, and the moisture content to thereby improve high-temperature stability, and, further, improve the adhesive strength to thereby improve stability in production, and minimize the moisture content to thereby improve reliability of a battery.
摘要翻译： 提供了一种微孔聚烯烃复合膜，该微孔聚烯烃复合膜包括含有聚合物粘合剂和无机颗粒的多孔涂层，该聚合物粘合剂同时使用水性聚合物和非水性聚合物。 控制含水聚合物和非水性聚合物的含量，从而优化耐热性，粘合强度和含水量，从而提高高温稳定性，并且进一步提高粘合强度，从而提高生产中的稳定性 ，并使水分含量最小化，从而提高电池的可靠性。
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9.发明申请公开(公告)号：US20180102525A1
公开(公告)日：2018-04-12
申请号：US15836111
申请日：2017-12-08
发明人： Yong Kyoung Kim , Dong Jin Joo , Young Jun Woo , Jae Woong Kim , Kyu Young Cho , Jung Moon Sung , Dong Man Cho
CPC分类号： H01M2/1686 , H01M2/14 , H01M2/145 , H01M2/1646 , H01M2/1653
摘要： Provided are a micro-porous hybrid film and a method for preparing the same, and more particularly, a micro-porous hybrid film capable of improving reliability of a battery by simultaneously improving thermal stability at a high temperature and water properties, and a method for preparing the same. In addition, the present invention relates to a micro-porous hybrid film suitable for a separator of a high capacity/high output lithium secondary battery capable of increasing production stability, long term stability, and performance of the battery by improving adhesive force between a micro-porous film and a coating layer and permeability and minimizing a water content by the coating layer.
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10.发明申请公开(公告)号：US20170294638A1
公开(公告)日：2017-10-12
申请号：US15484200
申请日：2017-04-11
发明人： Dong Jin Joo , Yun Bong Kim , Su Ji Lee , Kyu Young Cho
IPC分类号： H01M2/16 , H01M10/0525
CPC分类号： H01M2/1686 , H01M2/1653 , H01M2/166 , H01M10/0525
摘要： Provided are a separator for a lithium secondary battery in which an entire thickness of the separator and a ratio of a heat-resistant layer included in the separator satisfy specific ranges, respectively, and a battery including the same. The separator has significantly excellent heat resistance and mechanical strength, and it is possible to manufacture a high capacity and high output battery using the separator, thereby making it possible to significantly improve safety even in the high capacity and the high output battery.
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