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公开(公告)号：EP4050721A1
公开(公告)日：2022-08-31
申请号：EP20889718.1
申请日：2020-11-17
发明人： SUNG, Dong-Wook , KWON, Hye-Jin , SHIN, Sun-Yong , LEE, Jong-Yoon
IPC分类号： H01M50/409 , H01M50/40 , H01M10/052
摘要： Disclosed is a separator for an electrochemical device having a low content of secondary particles formed by aggregation of an inorganic particles in the inorganic coating layer. Particularly, the separator has a low content of secondary particles protruding from the separator surface to a predetermined height or more. Since the inorganic particles are not aggregated but are distributed homogeneously in the inorganic coating layer, the separator allows uniform dispersion of pressure over the whole surface of the separator, when it is applied to a battery and pressure is generated in the battery due to the charge/discharge of the battery. In this manner, it is possible to minimize deformation of the separator. Meanwhile, when using a porous film made of a polymer material as a separator substrate, there is a low tendency for intensive application of pressure from the secondary particles to a local site of the separator substrate, and thus the separator substrate is less damaged and a possibility of short-circuit generation is reduced.
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公开(公告)号：EP4246699A1
公开(公告)日：2023-09-20
申请号：EP22865061.0
申请日：2022-09-01
发明人： LEE, So-Yeong , JEONG, So-Mi , BAE, Won-Sik , LEE, Jong-Yoon , PARK, So-Jung
IPC分类号： H01M50/403 , H01M50/451 , H01M50/491
摘要： An electrode assembly manufacturing method according to the present disclosure uses a pre-compressed separator substrate. Therefore, a reduction in thickness of the separator by the pressure applied in a lamination process during the manufacture of an electrode assembly is small. For this reason, the separator of the electrode assembly manufactured by the method exhibits high insulation performance and does not experience a decrease in dielectric breakdown voltage. In addition, even though high pressure is applied during the lamination process, damage to the separator is small, and the processing speed is fast, resulting in process efficiency.
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公开(公告)号：EP4142035A1
公开(公告)日：2023-03-01
申请号：EP21869633.4
申请日：2021-09-09
发明人： LEE, Jong-Yoon , SUNG, Dong-Wook , KIM, Young-Bok
IPC分类号： H01M50/403 , H01M50/449 , H01M50/446 , B05C1/08 , B05C9/14
摘要： The present disclosure relates to an apparatus and method for manufacturing a separator. The apparatus for manufacturing a separator applies heat to a porous polymer substrate by using a heating roller, before the porous polymer substrate is introduced into a coater system for a porous coating layer. In this manner, it is possible to prevent the problem of waving and sagging of the polymer substrate.
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4.发明公开
公开(公告)号：EP4152505A1
公开(公告)日：2023-03-22
申请号：EP21877910.6
申请日：2021-09-29
发明人： CHO, Jin-Hyun , KIM, Young-Bok , SUNG, Dong-Wook , LEE, Jong-Yoon
IPC分类号： H01M50/403 , H01M50/449 , H01M50/411 , H01M50/446
摘要： The present disclosure relates to a separator for a secondary battery, comprising: a porous polymer substrate; a first coating layer disposed on one surface of the porous polymer substrate and including a plurality of inorganic particles and a first binder polymer; a second coating layer disposed on the other surface of the porous polymer substrate and including a plurality of inorganic particles and the first binder polymer; and a third coating layer disposed between the porous polymer substrate and the first coating layer, and/or between the porous polymer substrate and the second coating layer, and including a second binder polymer, wherein the second binder polymer includes a non-wetting polymer. The present disclosure also relates to a method for manufacturing the separator and a secondary battery including the separator. Since the separator includes a non-wetting polymer, it is possible to minimize a deviation in physical properties between the coated one surface and the other surface of the separator.
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公开(公告)号：EP4407775A1
公开(公告)日：2024-07-31
申请号：EP22881355.6
申请日：2022-10-12
发明人： LEE, So-Yeong , PARK, So-Jung , BAE, Won-Sik , LEE, Jong-Yoon , JEONG, So-Mi
IPC分类号： H01M50/451 , H01M50/446 , H01M50/463 , H01M50/489 , H01M50/417 , H01M10/04 , H01M10/058 , H01M50/531
CPC分类号： Y02E60/10 , H01M50/489 , H01M50/446 , H01M50/451 , H01M50/463 , H01M10/04 , H01M10/058 , H01M50/531 , H01M50/417
摘要： Disclosed is a separator including a separator substrate and an inorganic coating layer disposed on at least one surface of the substrate, wherein a concave pattern portion having a concave pattern is applied merely at the outer circumferential end of the separator substrate. The separator may show excellent resistance characteristics, while ensuring high binding force between the separator substate and the inorganic coating layer by virtue of such a structural feature. In addition, in the electrochemical device including the separator, the concave pattern portion at the outer circumferential end of the separator is disposed in such a manner that it may be overlapped with the tab portion of an electrode, when the separator is applied to an electrode assembly. In this manner, it is possible to prevent lithium plating.
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公开(公告)号：EP4289515A1
公开(公告)日：2023-12-13
申请号：EP22878838.6
申请日：2022-09-30
发明人： BAE, Won-Sik , PARK, So-Jung , LEE, So-Yeong , LEE, Jong-Yoon , JEONG, So-Mi
IPC分类号： B05C1/08 , H01M50/403 , H01M50/446 , H01M50/449 , H01M50/489
摘要： The present disclosure relates to a coating bar and a method for manufacturing a separator using the same.
The coating bar according to the present disclosure may form a coating layer having an area with different thicknesses by one coating.
Additionally, the method for manufacturing a separator according to the present disclosure includes forming a porous coating layer using a predetermined coating bar, to manufacture a separator including the porous coating layer having an area with different thicknesses. In particular, the present disclosure manufactures the separator having a larger thickness at the two ends than at the center, thereby avoiding a lack of adhesive strength at the two ends in a transverse direction in the adhesion between the separator and the electrode, and exhibiting uniform adhesive strength over the whole interface between the separator and the electrode.-
7.发明公开
公开(公告)号：EP4274015A1
公开(公告)日：2023-11-08
申请号：EP22878819.6
申请日：2022-09-30
发明人： BAE, Won-Sik , BAE, Dong-Hun , PARK, So-Jung , LEE, Jong-Yoon , JEONG, So-Mi
IPC分类号： H01M50/449 , H01M50/446 , H01M50/489 , H01M10/052 , H01M10/058
摘要： The present disclosure relates to a separator for an electrochemical device, and an electrode assembly and secondary battery including the same. The separator for an electrochemical device includes: a porous polymer substrate; and a porous coating layer formed on at least one surface of the porous polymer substrate, and including a binder polymer and inorganic particles, wherein the thickness of the separator at both ends thereof in the transverse direction (TD) is larger than the thickness of the separator at the central portion thereof in TD. The separator prevents generation of a deficiency in adhesion at both ends in TD upon the adhesion of the separator with the electrodes and shows uniform adhesion by controlling the thickness of both ends of the separator in TD.
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8.发明公开
公开(公告)号：EP4254636A1
公开(公告)日：2023-10-04
申请号：EP22861766.8
申请日：2022-08-26
发明人： PARK, So-Jung , BAE, Won-Sik , LEE, Jong-Yoon , LEE, So-Yeong , JEONG, So-Mi
IPC分类号： H01M50/451 , H01M50/446 , H01M50/489 , H01M50/46 , H01M10/058 , H01M10/052
摘要： Provided is a separator for an electrochemical device, including a porous substrate, and a porous coating layer formed on at least one surface of the porous substrate, wherein the porous coating layer includes a binder polymer and an inorganic filler, and satisfies Formula 1 of 20 ≤ [Content of inorganic filler (wt%) x BET surface area of inorganic filler (m 2 /g)] / [Content of binder polymer (wt%)] ≤ 30 (wherein the content of binder polymer and the content of inorganic filler are based on 100 wt% of the total weight of the porous coating layer.) The separator for an electrochemical device ensures the safety of an electrochemical device, while providing improved adhesion between the porous substrate and the porous coating layer of the separator and improved adhesion to an electrode, thereby realizing improved heat resistance and stability.
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公开(公告)号：EP4243136A1
公开(公告)日：2023-09-13
申请号：EP22861666.0
申请日：2022-08-22
发明人： BAE, Won-Sik , SUNG, Dong-Wook , PARK, So-Jung , LEE, Jong-Yoon , JEONG, So-Mi
IPC分类号： H01M10/04 , B23K26/382 , B26D7/08 , B26F1/14 , B26D1/04
摘要： The present disclosure relates to a method and apparatus for manufacturing unit cells. The method for manufacturing unit cells includes the steps of: A) preparing a pre-cell including a first separator sheet and a plurality of first electrodes disposed on the first separator sheet while being spaced apart from one another; B) forming a cutting guide line including a plurality of though-holes spaced apart from one another on the pre-cell; and C) cutting the pre-cell along the cutting guide line to form a plurality of unit cells. In addition, the apparatus for manufacturing unit cells includes: a hole-forming unit configured to form a cutting guide line including a plurality of though-holes spaced apart from one another, on a pre-cell including a separator sheet and electrodes disposed on the separator sheet; and a cutting unit configured to cut the pre-cell along the cutting guide line to form a plurality of unit cells.
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公开(公告)号：EP4142034A1
公开(公告)日：2023-03-01
申请号：EP21833718.6
申请日：2021-06-30
发明人： KIM, Young-Bok , LEE, Jong-Yoon , SUNG, Dong-Wook
IPC分类号： H01M50/403 , H01M50/449 , H01M50/446 , H01M10/052 , B05C5/02 , B05D7/04
摘要： The present disclosure relates to a method and apparatus for manufacturing a separator, and a separator obtained thereby. The method for manufacturing a separator according to an embodiment of the present disclosure includes applying a solvent for pore impregnation onto a porous polymer substrate, before applying slurry for forming a porous coating layer thereto. In this manner, it is possible to provide a separator which shows a small deviation in physical properties between the porous coating layers formed on the top surface and the back surface of the porous polymer substrate.
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