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公开(公告)号：EP4203092A1
公开(公告)日：2023-06-28
申请号：EP21889563.9
申请日：2021-11-03
IPC分类号： H01M4/13 , H01M4/62 , H01M10/052 , H01M4/02
摘要： Disclosed is an electrode including a multilayer structured electrode active material layer having two or more stacked sub-layers. The electrode is characterized in that the content of repeating unit (c) derived from a vinyl cyanide compound and repeating unit (d) derived from a (meth)acrylate compound in the lower layer is smaller than the content in the upper layer. It is possible to improve the binding force and resistance characteristics of the multilayer structured electrode by using a different composition of binder at the bottommost portion that is in contact with the current collector and at the topmost portion that is in contact with the separator. When using the multilayer structured electrode obtained by controlling the binder composition of the topmost portion and that of the bottommost portion to have a suitable composition of ingredients, it is possible to further improve battery performance, including capacity, life, output, or the like.
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公开(公告)号：EP4190456A1
公开(公告)日：2023-06-07
申请号：EP21892149.2
申请日：2021-10-07
发明人： LEE, Taek-Soo , JEON, Shin-Wook , CHOY, Sang-Hoon , KIM, Man-Hyeong , KIM, Young-Gon , JO, Young-Joon , CHO, Jin-Ho
摘要： Disclosed is a dual slot die coater capable of discharging a coating solution through an outlet after removing air bubbles contained in the coating solution. The dual slot die coater according to the present disclosure includes a lower air vent installed in the lower manifold region and an upper air vent installed in the upper manifold region.
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公开(公告)号：EP4154994A1
公开(公告)日：2023-03-29
申请号：EP21886820.6
申请日：2021-10-27
发明人： LEE, Taek-Soo , JEON, Shin-Wook , CHO, Jin-Ho , CHOY, Sang-Hoon
摘要： Provided is a slot die coater capable of uniformly forming a coating boundary formed in a machine direction (MD). The slot die coater includes at least two die blocks; a shim plate provided between the two die blocks to form a slot; and a manifold provided in the die block and configured to accommodate a coating solution, wherein the coating solution is discharged and applied to a substrate through a discharge port communicatively connected with the slot an end of the shim plate is moved backward relative to a die lip which is a front end of the die block so as to be offset relative to the die lip.
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公开(公告)号：EP4239706A1
公开(公告)日：2023-09-06
申请号：EP22893031.9
申请日：2022-09-30
发明人： CHOI, Min-Hyuck , KIM, Guk-Tae , KIM, Man-Hyeong , PARK, Joon-Sun , LEE, Taek-Soo , JEON, Shin-Wook
摘要： An electrode coating device and an electrode coating method are disclosed. An electrode coating device according to an embodiment of the present disclosure includes a slot die coater to apply a slurry to a substrate; and an edge adjusting material providing means providing an edge adjusting material to adjust a protrusion formed at an end of the slurry by contacting the slurry.
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公开(公告)号：EP4207349A1
公开(公告)日：2023-07-05
申请号：EP21886975.8
申请日：2021-11-01
IPC分类号： H01M4/13 , H01M4/139 , H01M4/04 , H01M10/052 , H01M4/02
摘要： Disclosed are a negative electrode, including: a negative electrode current collector; and a negative electrode active material layer disposed on at least one surface of the negative electrode current collector, and satisfying the following formula: B/A ≤ 1.2 ,
wherein, in a graph measuring the binding force according to a normalized thickness of the active material layer, A is defined as a maximum value of the binding force of the active material layer in a normalized thickness of 20-60 and B is defined as a maximum value of the binding force of the active material layer in a normalized thickness of 70-90, and
a lithium secondary battery including the negative electrode.-
公开(公告)号：EP4159323A1
公开(公告)日：2023-04-05
申请号：EP21915450.7
申请日：2021-10-14
摘要： A dual-slot die coater capable of easy coating gap adjustment and control of a width direction deviation of a coating gap is provided. The dual-slot die coater includes a first slot and a second slot for discharging a coating solution in a direction opposite to gravity. The dual-slot die coater includes a first die block vertically installed on a rear portion of an upper surface of a base, a second die block arranged on a front surface of the first die block to form the first slot between the second die block and the first die block, and a third die block arranged on a front surface of the second die block to form the second slot between the third die block and the second die block, and further includes an alignment block provided between a front portion of the upper surface of the base and a lower surface of the second die block and fastened and coupled to the lower surface of the second die block and a lower surface of the first die block by bolts.
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公开(公告)号：EP4148815A1
公开(公告)日：2023-03-15
申请号：EP21869799.3
申请日：2021-09-17
摘要： A dual slot die coater according to the present disclosure is a dual slot die coater including a lower slot and an upper slot, for extrusion coating of an electrode active material slurry on a surface of a continuously moving current collector through at least one of the lower slot or the upper slot, and the dual slot die coater includes a lower plate, an intermediate plate positioned on the lower plate and an upper plate positioned on the intermediate plate, the lower slot being formed between the lower plate and the intermediate plate, and the upper slot being formed between the intermediate plate and the upper plate, wherein the lower plate, the intermediate plate and the upper plate have a lower die lip, an intermediate die lip and an upper die lip, each forming an front end with respect to the current collector, respectively, and a thickness of the lower die lip is larger than a thickness of the upper die lip and a thickness of the intermediate die lip.
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公开(公告)号：EP4147791A1
公开(公告)日：2023-03-15
申请号：EP21872918.4
申请日：2021-09-23
摘要： There is provided a dual slot die coater that is easy to adjust a coating gap and can control a widthwise deviation of coating gap. The dual slot die coater of the present disclosure includes a plate member including a lower plate, an intermediate plate positioned on the lower plate and an upper plate positioned on the intermediate plate, wherein a lower slot is formed between the intermediate plate and the lower plate, and an upper slot is formed between the upper plate and the intermediate plate; a block provided on a rear surface of the plate member, wherein the block can be separated from or coupled to the plate member, or integrally formed with at least one plate of the plate member; a first bolt to push at least one plate of the plate member from the block as the first bolt passes through the block; and a second bolt to pull the at least one plate of the plate member toward the block as the second bolt passes through the block.
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公开(公告)号：EP4154993A1
公开(公告)日：2023-03-29
申请号：EP21872807.9
申请日：2021-09-13
发明人： LEE, Taek-Soo , JEON, Shin-Wook , CHOY, Sang-Hoon
摘要： Provided is a multi-slot die coater with reduced structural vulnerability to deformation and twist in the multi-slot die coater basically including three die blocks. The multi-slot die coater according to the present disclosure is a multi-slot die coater including a lower slot and an upper slot to extrude and coat a coating solution on a surface of a continuously moving substrate through at least one of the lower slot or the upper slot, and includes a lower die block, an intermediate die block and an upper die block. The multi-slot die coater includes a bolt fastened at contact surfaces between the lower die block, the intermediate die block and the upper die block, the bolt being at such an angle that a bolt head faces an upper exit port and a lower exit port.
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公开(公告)号：EP4151320A1
公开(公告)日：2023-03-22
申请号：EP21889450.9
申请日：2021-10-26
发明人： LEE, Taek-Soo , JEON, Shin-Wook , CHOY, Sang-Hoon
摘要： Provided is a slot die coater including: at least two die blocks; a shim plate provided between the two die blocks to form a slot; and a manifold provided in the die block and configured to accommodate a coating solution, wherein the slot die coater is configured to discharge and apply the coating solution to a substrate through a discharge port communicatively connected with the slot, a die lip which is a front end of the die block and an end of the shim plate are aligned with each other, the shim plate includes an open portion by cutting at least one region thereof from the end of the shim plate such that a coating width of a coating layer applied on the substrate is determined, and a part of a corner among corners of the shim plate defining the open portion from which the coating solution is discharged is chamfered, and when a thickness of the coating solution applied on the substrate is A, the chamfered part has a shape cut by a depth equal to or greater than A to inside of the corner in a region away inward by A from the end of the shim plate.
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