Patents by Inventor SUE-JIN KIM
SUE-JIN KIM has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240154085Abstract: An electrode coating die includes a slurry discharge part configured to discharge an active material slurry onto a current collector; and a dam liquid discharge part provided on at least one side of the slurry discharge part and configured to discharge a dam liquid to form a dam layer covering at least a portion of an inclined surface portion provided at an edge portion of an active material slurry layer coated with an active material slurry discharged from the slurry discharge part, and an electrode coating apparatus including the same. Further, the present invention provides a method of manufacturing an electrode, the method including: a preparing operation of preparing an active material slurry including an active material, a conductive material, and a solvent; and a coating operation of applying the active material slurry on a current collector.Type: ApplicationFiled: April 22, 2022Publication date: May 9, 2024Applicant: LG ENERGY SOLUTION, LTD.Inventors: Sue Jin KIM, Duk Hyun RYU, Kwanhee LEE, Jinsu JANG, Yunju LEE, Geunho PARK, Sangjin PARK
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Patent number: 11929490Abstract: The present disclosure relates to an anode for a lithium secondary battery, wherein an anode material layer is formed on at least one surface of an anode current collector, and the anode material layer includes large-particle graphite, a small-particle silicon-based material, and fine-particle graphite, and satisfies the following conditions 1 to 3: [Condition 1] Average diameter D50 of the large-particle graphite (D1): 1 to 50 ?m [Condition 2] Average diameter D50 of the small-particle silicon-based material (D2): 0.155D1 to 0.414D1 [Condition 3] Average diameter D50 of the fine-particle graphite (D3): 0.155D1 to 0.414D1, or 0.155D2 to 0.414D2.Type: GrantFiled: June 26, 2019Date of Patent: March 12, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Junghyun Choi, Hyeon Min Song, Joo Hwan Sung, Han Sol Park, Minsu Cho, Sunghae Park, Jingoo Kwak, Younguk Park, Sue Jin Kim, Jinsu Jang
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Publication number: 20240079633Abstract: An electrode assembly includes an anode; a cathode; and a separator between the anode and the cathode rolled together. The anode includes an anode current collector and an anode active material portion applied onto the anode current collector, and the cathode includes a cathode current collector and a cathode active material portion applied onto the cathode current collector. An anode uncoated portion of the anode current collector at which the anode active material is not applied extends in a first direction, and a cathode uncoated portion of the cathode current collector at which the cathode active material is not applied extends in an opposite direction. The cathode active material portion includes a loading reduction portion in which a loading amount of the cathode active material is smaller than that of an adjacent region. The loading reduction portion is at one end part of the cathode in the first direction.Type: ApplicationFiled: January 28, 2022Publication date: March 7, 2024Applicant: LG ENERGY SOLUTION, LTD.Inventors: Kwanhee LEE, Duk Hyun RYU, Sue Jin KIM, Jinsu JANG
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Publication number: 20230170533Abstract: An electrode assembly having a jelly-roll type structure in which a first electrode current collector, a second electrode current collector, and a separator located between the first electrode current collector and the second electrode current collector are wound in one direction. At least one of the first electrode current collector or the second electrode current collector includes an uncoated portion exposed to outside of the separator. A cutting line is provided in the axial direction of the electrode assembly in the at least one of the uncoated portion. The uncoated portion in which the cutting line is provided is divided into a remaining area remaining to protrude in a winding axis direction and a bent target area bent in a preset direction. At least a part of the uncoated portion included in the bent target area is bent to have a plurality of layers overlapping in a bending direction.Type: ApplicationFiled: January 20, 2022Publication date: June 1, 2023Applicant: LG ENERGY SOLUTION, LTD.Inventors: Joo-Young CHUNG, Min-Woo KIM, Sang-Ho BAE, Do-Gyun KIM, Su-Taek JUNG, Kwan-Hee LEE, Sue-Jin KIM, Yun-Ju LEE, Duk-Hyun RYU
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Publication number: 20230117276Abstract: Disclosed is a lithium secondary battery including: an electrode assembly in which a positive electrode plate, a negative electrode plate, and a separator interposed between the positive electrode plate and the negative electrode plate are wound in one direction; a battery can in which the electrode assembly is accommodated; and a sealing body which seals an open end of the battery can. The positive electrode plate includes a positive electrode active material, and the positive electrode active material includes single particles or quasi-single particles, having an average particle diameter D50 of 5 ?m or less.Type: ApplicationFiled: October 13, 2022Publication date: April 20, 2023Applicant: LG ENERGY SOLUTION, LTD.Inventors: Byoung Gu LEE, Duk Hyun RYU, Kwan Hee LEE, Myung An LEE, Sue Jin KIM
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Publication number: 20230121815Abstract: A lithium secondary battery which includes an electrode assembly in which a positive electrode plate, a negative electrode plate, and a separator interposed between the positive electrode plate and the negative electrode plate are wound in one direction, a battery can in which the electrode assembly is accommodated, and a sealing body which seals an open end of the battery can. The positive electrode plate includes a positive electrode active material layer, and the positive electrode active material layer includes scaly graphite and positive electrode active material powder including single particles, quasi-single particles, or a combination thereof.Type: ApplicationFiled: October 7, 2022Publication date: April 20, 2023Applicant: LG ENERGY SOLUTION, LTD.Inventors: Sue Jin KIM, Duk Hyun RYU, Kwan Hee LEE, Jin Su JANG, Yun Ju LEE, Geun Ho PARK, Seung Yeon SON
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Publication number: 20230117468Abstract: A lithium secondary battery which includes an electrode assembly in which a positive electrode plate, a negative electrode plate, and a separator interposed between the positive electrode plate and the negative electrode plate are wound in one direction, a battery can in which the electrode assembly is accommodated, and a sealing body which seals an open end of the battery can. The positive electrode plate includes positive electrode active material comprising single particles, quasi-single particles, or a combination thereof, and the positive electrode active material has Dmin of 1.0 ?m or more.Type: ApplicationFiled: October 7, 2022Publication date: April 20, 2023Applicant: LG ENERGY SOLUTION, LTD.Inventors: Byoung Gu LEE, Duk Hyun RYU, Kwan Hee LEE, Myung An LEE, Sue Jin KIM
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Publication number: 20220216572Abstract: An insulator for a secondary battery and a secondary battery including the insulator are disclosed. According to one aspect, an insulator for a secondary battery includes: a body part configured to define a body; and a buffer part adhering to a top surface of the body part, wherein the buffer part includes a plurality of protrusions that protrude upward, and the body part is made of a material different from that of the buffer part.Type: ApplicationFiled: March 20, 2020Publication date: July 7, 2022Applicant: LG ENERGY SOLUTION, LTD.Inventor: Sue Jin KIM
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Publication number: 20210159488Abstract: The present disclosure relates to an anode for a lithium secondary battery, wherein an anode material layer is formed on at least one surface of an anode current collector, and the anode material layer includes large-particle graphite, a small-particle silicon-based material, and fine-particle graphite, and satisfies the following conditions 1 to 3: [Condition 1] Average diameter D50 of the large-particle graphite (D1): 1 to 50 ?m [Condition 2] Average diameter D50 of the small-particle silicon-based material (D2): 0.155D1 to 0.414D1 [Condition 3] Average diameter D50 of the fine-particle graphite (D3): 0.155D1 to 0.414D1, or 0.155D2 to 0.414D2.Type: ApplicationFiled: June 26, 2019Publication date: May 27, 2021Applicant: LG CHEM, LTD.Inventors: Junghyun CHOI, Hyeon Min SONG, Joo Hwan SUNG, Han Sol PARK, Minsu CHO, Sunghae PARK, Jingoo KWAK, Younguk PARK, Sue Jin KIM, Jinsu JANG
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Publication number: 20210151744Abstract: The present disclosure relates to an anode for a lithium secondary battery, wherein an anode material layer is formed on at least one surface of an anode current collector, and the anode material layer includes large-particle graphite, a small-particle silicon-based material, fine-particle graphite, and carbon nanotube, and satisfies the following conditions 1 to 3: [Condition 1] Average diameter D50 of the large-particle graphite (D1): 1 to 50 ?m [Condition 2] Average diameter D50 of the small-particle silicon-based material (D2): 0.155D1 to 0.414D1 [Condition 3] Average diameter D50 of the fine-particle graphite (D3): 0.155D1 to 0.414D1, or 0.155D2 to 0.414D2.Type: ApplicationFiled: June 26, 2019Publication date: May 20, 2021Applicant: LG CHEM, LTD.Inventors: Junghyun CHOI, Hyeon Min SONG, Joo Hwan SUNG, Han Sol PARK, Minsu CHO, Sunghae PARK, Jingoo KWAK, Younguk PARK, Sue Jin KIM, Jinsu JANG
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Patent number: 9190160Abstract: A method of determining a read voltage of a memory device includes performing a plurality of read operations with respective different read voltages on a first group of storage regions of the memory device using a first error correction rate, wherein the plurality of read operations are performed to distinguish between a pair of adjacent logic states of memory cells in the first group of storage regions, detecting a read voltage level, among the different read voltages, at which a minimum number of erroneous bits is generated in the at least one read operation, and determining a read voltage for a second group of storage regions to which a second error correction rate is applied, based on the detected read voltage level, wherein the first error correction rate is higher than the second error correction rate.Type: GrantFiled: July 23, 2013Date of Patent: November 17, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Dong-Ju Ok, Hye-Ry No, Kyoung-Lae Cho, Sue-Jin Kim
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Publication number: 20140043903Abstract: A method of determining a read voltage of a memory device comprises performing a plurality of read operations with respective different read voltages on a first group of storage regions of the memory device using a first error correction rate, wherein the plurality of read operations are performed to distinguish between a pair of adjacent logic states of memory cells in the first group of storage regions, detecting a read voltage level, among the different read voltages, at which a minimum number of erroneous bits is generated in the at least one read operation, and determining a read voltage for a second group of storage regions to which a second error correction rate is applied, based on the detected read voltage level, wherein the first error correction rate is higher than the second error correction rate.Type: ApplicationFiled: July 23, 2013Publication date: February 13, 2014Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: DONG-JU OK, HYE-RY NO, KYOUNG-LAE CHO, SUE-JIN KIM