公开(公告)号：US20150380702A1

公开(公告)日：2015-12-31

申请号：US14850590

申请日：2015-09-10

Applicant: LG CHEM, LTD.

Inventor： Joo Sung LEE ,  Jang-Hyuk HONG ,  Jong-Hun KIM

IPC: H01M2/14 ,  H01M10/0525 ,  H01M2/16

CPC classification number: H01M2/145 ,  B05D1/26 ,  B05D3/0254 ,  B05D3/104 ,  B05D2252/02 ,  H01M2/1646 ,  H01M2/1653 ,  H01M2/166 ,  H01M2/1686 ,  H01M10/0525

Abstract: A method for manufacturing a separator includes (S1) preparing a porous substrate having pores, (S2) coating at least one surface of the porous substrate with a first solvent, (S3) coating the first solvent with a slurry containing inorganic particles dispersed therein and formed by dissolving a binder polymer in a second solvent, (S4) drying the first and second solvents simultaneously to form a porous organic-inorganic composite layer on the porous substrate. Since the phenomenon that the pores of the porous substrate are closing by the binder polymer is minimized, it is possible to prevent the resistance of the separator from increasing due to the formation of the porous organic-inorganic composite layer.

Abstract translation: 制造隔膜的方法包括：（S1）制备具有孔的多孔基材，（S2）用第一溶剂涂布多孔基材的至少一个表面，（S3）用分散有无机颗粒的浆料涂布第一溶剂， 通过将粘合剂聚合物溶解在第二溶剂中形成，（S4）同时干燥第一和第二溶剂以在多孔基材上形成多孔有机 - 无机复合层。 由于多孔基材的孔被粘合剂聚合物闭合的现象最小化，可以防止由于多孔有机 - 无机复合层的形成而增加隔膜的电阻。

公开(公告)号：US20130084483A1

公开(公告)日：2013-04-04

申请号：US13688401

申请日：2012-11-29

Applicant: LG Chem, Ltd.

Inventor： Joo-Sung LEE ,  Jeong-Min HA ,  Sun-Mi JIN ,  Bo-Kyung RYU ,  Jong-Hun KIM

IPC: H01M2/18 ,  H01M2/16

CPC classification number: H01M2/18 ,  H01M2/166 ,  H01M2/1673 ,  H01M2/1686 ,  H01M10/052 ,  Y02E60/122

Abstract: Disclosed is a separator. The separator includes a porous substrate, and a porous coating layer formed on at least one surface of the porous substrate and including a mixture of inorganic particles and a binder polymer. A continuous or discontinuous patterned layer is formed on the surface of the porous coating layer to allow an electrolyte solution to permeate therethrough. The continuous or discontinuous patterned layer may be formed with continuous grooves to allow an electrolyte solution to permeate therethrough. Due to this structure, the wettability of the separator with an electrolyte solution is improved, shortening the time needed to impregnate the electrolyte solution into the separator.

Abstract translation: 公开了一种分离器。 分离器包括多孔基材和形成在多孔基材的至少一个表面上并且包括无机颗粒和粘合剂聚合物的混合物的多孔涂层。 在多孔涂层的表面上形成连续的或不连续的图案层，以使电解质溶液透过。 连续或不连续的图案层可以形成有连续的凹槽，以允许电解质溶液渗入其中。 由于这种结构，隔膜与电解液的润湿性得到改善，缩短了将电解液浸渍到隔板中所需的时间。

公开(公告)号：US20180013117A1

公开(公告)日：2018-01-11

申请号：US15545129

申请日：2016-03-30

Applicant: LG CHEM, LTD.

Inventor： Jong-Pil PARK ,  Jong-Hun KIM

IPC: H01M2/16 ,  B32B27/32 ,  B32B27/12 ,  B32B23/08

Abstract: The present invention relates to a separator for a secondary battery which is capable of improving a shut-down function of a cellulose-based multilayer separator physically having high strength. The separator for a secondary battery comprises a substrate formed of cellulose-based nanofibers and polyethylene nanoparticles; and a resin layer stacked on one surface or both surfaces of the substrate, the resin being formed from a polyolefin.

公开(公告)号：US20160056438A1

公开(公告)日：2016-02-25

申请号：US14840875

申请日：2015-08-31

Applicant: LG CHEM, LTD.

Inventor： Jong-Hun KIM ,  Sang-Young LEE ,  Pil-Kyu PARK ,  Jang-Hyuk HONG ,  Byoung-Jin SHIN ,  In-Chul KIM

IPC: H01M2/16 ,  H01M10/0583 ,  H01M10/0525 ,  H01M2/14

CPC classification number: H01M2/1686 ,  H01M2/145 ,  H01M2/1653 ,  H01M2/166 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/0583

Abstract: A separator includes a porous substrate having a plurality of pores; and a porous coating layer formed on at least one surface of the porous substrate and made of a mixture of a binder and a plurality of inorganic particles, wherein the binder includes a crosslinked binder. This separator may improve high temperature cycle performance, discharge characteristics and thermal resistance of an electrochemical device since the separator exhibits improved insolubility and impregnation to electrolyte and improved thermal resistance.

Abstract translation: 分离器包括具有多个孔的多孔基材; 以及形成在所述多孔基材的至少一个表面上并由粘合剂和多种无机颗粒的混合物制成的多孔涂层，其中所述粘合剂包括交联粘合剂。 该分离器可以改善电化学装置的高温循环性能，放电特性和耐热性，因为隔膜表现出改善的不溶性和浸渍到电解质和改善的耐热性。

公开(公告)号：US20210167461A1

公开(公告)日：2021-06-03

申请号：US17252839

申请日：2020-04-14

Applicant: LG CHEM, LTD.

Inventor： Min-Jae LEE ,  Jong-Hun KIM ,  Sung-Min HWANG

IPC: H01M50/403 ,  H01M50/463 ,  H01M10/0583

Abstract: A separator sealing apparatus for bonding an upper separator and a lower separator with an electrode plate being interposed therebetween and a separator sealing method is provided. The separator sealing apparatus includes a first sealing unit configured to seal a first region specified as an outer edge along a width direction of the electrode plate, among portions where the upper separator and the lower separator face each other; and a second sealing unit configured to seal a second region specified as an outer edge along a length direction of the electrode plate, among the portions where the upper separator and the lower separator face each other.

公开(公告)号：US20160013464A1

公开(公告)日：2016-01-14

申请号：US14771720

申请日：2014-10-31

Applicant: LG CHEM, LTD.

Inventor： Hyung-Kyun YU ,  Seok-Koo KIM ,  Bo-Kyung RYU ,  Jong-Hun KIM

IPC: H01M2/16 ,  H01M2/14

CPC classification number: H01M2/1686 ,  C08J9/26 ,  C08J2201/0462 ,  C08J2205/044 ,  C08J2371/08 ,  C08J2379/08 ,  C08J2381/04 ,  C08J2381/06 ,  H01M2/14 ,  H01M2/145 ,  H01M2/16 ,  H01M2/1653 ,  H01M2/18 ,  H01M10/052

Abstract: The present disclosure provides a porous separator substrate with an inverse opal structure obtained by using an engineering plastic resin with high heat-resistance, and a manufacturing method thereof. In the method, a non-crosslinked polymer resin is used to form an opal structure and a crosslinked polymer resin is penetrated into the opal structure and an organic solvent is used to remove the polymer particles being used to form the opal structure, thereby manufacturing a porous substrate with an inverse opal structure. According to the present disclosure, a separator having good porosity and air permeability can be provided without the problems of heat-resistance decrease, pore closing and thickness decrease.

Abstract translation: 本公开内容提供了一种具有通过使用具有高耐热性的工程塑料树脂获得的反蛋白石结构的多孔隔板基板及其制造方法。 在该方法中，使用非交联聚合物树脂形成蛋白石结构，并且交联聚合物树脂渗入蛋白石结构中，并使用有机溶剂除去用于形成蛋白石结构的聚合物颗粒，从而制造 具有反蛋白石结构的多孔基材。 根据本公开，可以提供具有良好的孔隙率和透气性的隔膜，而不存在耐热性降低，孔闭合和厚度减小的问题。

公开(公告)号：US20150162587A1

公开(公告)日：2015-06-11

申请号：US14622303

申请日：2015-02-13

Applicant: LG CHEM, LTD.

Inventor： Su-Jin YOON ,  Pil-Kyu PARK ,  Jong-Hun KIM ,  Jin-Nyoung YOO ,  In-Chul KIM ,  Sang-Young LEE

IPC: H01M2/16 ,  H01M2/14 ,  H01M10/0525

CPC classification number: H01M2/1686 ,  H01M2/145 ,  H01M2/1613 ,  H01M2/162 ,  H01M2/1646 ,  H01M2/1653 ,  H01M2/166 ,  H01M2/1666 ,  H01M10/052 ,  H01M10/0525 ,  Y02E60/122 ,  Y02P70/54

Abstract: A separator includes a non-woven fabric substrate having pores, fine thermoplastic powder located inside the pores of the non-woven fabric substrate, and a porous coating layer disposed on at least one surface of the non-woven fabric substrate. The fine thermoplastic powder has an average diameter smaller than that of the pores and a melting point lower than the melting or decomposition point of the non-woven fabric substrate. The porous coating layer includes a mixture of inorganic particles and a binder polymer whose melting point is higher than the melting or decomposition point of the fine thermoplastic powder. In the porous coating layer, the inorganic particles are fixedly connected to each other by the binder polymer and the pores are formed by interstitial volumes between the inorganic particles. Previous filling of the large pores of the non-woven fabric substrate with the fine thermoplastic powder makes the porous coating layer uniform.

Abstract translation: 隔膜包括具有孔的无纺布基材，位于无纺布基材的孔内的精细热塑性粉末，以及设置在无纺布基材的至少一个表面上的多孔涂层。 细的热塑性粉末的平均直径小于孔的直径，熔点低于无纺布基材的熔点或分解点。 多孔涂层包括无机颗粒和熔点高于细的热塑性粉末的熔点或分解点的粘合剂聚合物的混合物。 在多孔涂层中，无机颗粒通过粘合剂聚合物彼此固定连接，并且通过无机颗粒之间的间隙体积形成孔。 先前用细小的热塑性粉末填充无纺布基材的大孔，使多孔涂层均匀。