Patents by Inventor Sin-Kyu Kim
Sin-Kyu 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).
-
Patent number: 10541408Abstract: Provided is a composite electrode for a lithium secondary battery for improving output and a lithium secondary battery including the composite electrode, in which, in a composite electrode having two or more active materials mixed therein, an active material having a small particle size is included in the composite electrode by being coagulated and secondarily granulated so as to allow mixed active material particles to have a uniform size, and thus, electrical conductivity is improved to have high output characteristics.Type: GrantFiled: January 10, 2013Date of Patent: January 21, 2020Assignee: LG Chem, Ltd.Inventors: Sun Jung Hwang, Sin Kyu Kim, Yong Tae Lee, Hyun Kuk Noh, Geun Chang Chung, Keun Wan An
-
Patent number: 10062902Abstract: Disclosed is a positive electrode for secondary batteries manufactured by coating and rolling a slurry for a positive electrode mix including positive electrode active material particles on a current collector, wherein the positive electrode active material particles include one or more selected from the group consisting of lithium iron phosphate particles having an olivine crystal structure and lithium nickel-manganese-cobalt composite oxide particles according to Formula 1, the lithium nickel-manganese-cobalt composite oxide particles existing as secondary particles formed by agglomeration of primary particles, in an amount of greater than 50% and less than 90% based on the total volume of lithium nickel-manganese-cobalt composite oxide, and the lithium iron phosphate particles existing as primary particles in an amount of greater than 50% and less than 100% based on the total volume of lithium iron phosphate (Formula 1 is the same as defined in Claim 1).Type: GrantFiled: September 2, 2014Date of Patent: August 28, 2018Assignee: LG Chem, Ltd.Inventors: Won Hee Jeong, Su Hwan Kim, Sin Kyu Kim, Kyungkoo Lee, Jae Hyun Lee, Sun Jung Hwang, Geun Chang Chung
-
Patent number: 10044029Abstract: Disclosed herein is a lithium secondary battery including a positive electrode including lithium iron phosphate and layered lithium nickel manganese cobalt oxide as a positive electrode active material and a negative electrode including a negative electrode active material having a potential difference of 3.10 V or higher from the lithium iron phosphate at a point of 50% state of charge (SOC) afforded by the entirety of the lithium iron phosphate.Type: GrantFiled: June 5, 2014Date of Patent: August 7, 2018Assignee: LG Chem, Ltd.Inventors: Won Hee Jeong, Min Sun Cho, Sin Kyu Kim, Min Hee Lee, Seung Ryul Choi, Jae Hyun Lee, Geun Chang Chung
-
Patent number: 9911977Abstract: Disclosed herein is a cathode active material including a lithium manganese oxide, in which the lithium manganese oxide has a spinel structure with a predetermined constitutional composition represented by Formula 1 described in the detailed description, wherein a conductive material is applied to the surface of lithium manganese oxide particles, so as to exhibit charge-discharge properties in the range of 2.5 to 3.5V as well as in the 4V region.Type: GrantFiled: February 16, 2012Date of Patent: March 6, 2018Assignee: LG CHEM, LTD.Inventors: Hyun Kuk Noh, Sin Kyu Kim, Geun-Chang Chung, Song-Taek Oh, Sanguck Lee, Jong Chan Kim
-
Publication number: 20160204423Abstract: Disclosed is a positive electrode for secondary batteries manufactured by coating and rolling a slurry for a positive electrode mix including positive electrode active material particles on a current collector, wherein the positive electrode active material particles include one or more selected from the group consisting of lithium iron phosphate particles having an olivine crystal structure and lithium nickel-manganese-cobalt composite oxide particles according to Formula 1, the lithium nickel-manganese-cobalt composite oxide particles existing as secondary particles formed by agglomeration of primary particles, in an amount of greater than 50% and less than 90% based on the total volume of lithium nickel-manganese-cobalt composite oxide, and the lithium iron phosphate particles existing as primary particles in an amount of greater than 50% and less than 100% based on the total volume of lithium iron phosphateType: ApplicationFiled: September 2, 2014Publication date: July 14, 2016Applicant: LG Chem, Ltd.Inventors: Won Hee Jeong, Su Hwan Kim, Sin Kyu Kim, Kyungkoo Lee, Jae Hyun Lee, Sun Jung Hwang, Geun Chang Chung
-
Patent number: 9324994Abstract: A high capacity lithium secondary battery includes a lithium manganese oxide having a layered structure exhibiting a great irreversible capacity in the event of overcharging at a high voltage and a spinel-based lithium manganese oxide. Because it is activated at a high voltage of 4.45 V or higher based on a positive electrode potential, additional lithium for utilizing a 3V range of the spinel-based lithium manganese oxide can be provided and an even profile in the entire SOC area can be obtained. Because the lithium secondary battery includes the mixed positive electrode active material including the spinel-based lithium manganese oxide and the lithium manganese oxide having a layered structure, and is charged at a high voltage, its stability can be improved. Also, the high capacity battery having a large available SOC area and improved stability without causing an output shortage due to a rapid voltage drop in the SOC area can be implemented.Type: GrantFiled: June 23, 2011Date of Patent: April 26, 2016Assignee: LG CHEM, LTD.Inventors: Song Taek Oh, Sun Kyu Kim, Geun Chang Chung, Sin Kyu Kim, Hyun Seok Lee, Bong Kook Youn
-
Publication number: 20160099462Abstract: Disclosed herein is a lithium secondary battery including a positive electrode including lithium iron phosphate and layered lithium nickel manganese cobalt oxide as a positive electrode active material and a negative electrode including a negative electrode active material having a potential difference of 3.10 V or higher from the lithium iron phosphate at a point of 50% state of charge (SOC) afforded by the entirety of the lithium iron phosphate.Type: ApplicationFiled: June 5, 2014Publication date: April 7, 2016Applicant: LG CHEM, LTD.Inventors: Won Hee Jeong, Min Sun Cho, Sin Kyu Kim, Min Hee Lee, Seung Ryul Choi, Jae Hyun Lee, Geun Chang Chung
-
Patent number: 9287564Abstract: Provided are a positive electrode active material for improving an output and a lithium secondary battery including the same. Particularly, graphite and conductive carbon which have shapes and sizes different from each other, may be simultaneously coated on a mixed positive electrode material of a 3-component system lithium-containing metal oxide having a layered structure and expressed as following Chemical Formula 1 and LiFePO4 having an olivine structure as an conductive material to improve high resistance occurrence and conductivity reduction phenomenon of a 3-component system lithium metal oxide due to a difference between particle sizes and surface areas of the 3-component system lithium-containing metal oxide and LiFePO4 olivine. Li1+aNixCoyMn1-x-yO2, 0?a<0.5, 0<x<1, 0<y<0.Type: GrantFiled: August 3, 2012Date of Patent: March 15, 2016Assignee: LG CHEM, LTD.Inventors: Song Taek Oh, Sung Kyun Chang, Sin Young Park, Sun Jung Hwang, Jin Hyung Lim, Geun Chang Chung, Sin Kyu Kim, Jung Seok Choi, KeunWan An
-
Patent number: 9214664Abstract: An object of the present invention is a cathode active material including a lithium manganese-based oxide. The lithium manganese-based oxide has a spinel structure, exhibits core-shell phase transition by which phase transition of a crystal structure occurs from a cubic structure to a tetragonal structure in a direction from the surface of particles to the center of the particles during discharging to the 3V region, and includes a conductive material at the shell to improve electrical conductivity of the tetragonal structure.Type: GrantFiled: March 7, 2013Date of Patent: December 15, 2015Assignee: LG CHEM, LTD.Inventors: Song Taek Oh, Sang Uck Lee, Geun Chang Chung, Sin Kyu Kim
-
Publication number: 20150263898Abstract: A black box apparatus and apparatus for supporting the reconfiguration of a smart grid system. The apparatus includes a monitoring unit, an information collection unit, and an information storage unit. The monitoring unit generates function information relate to a system call when the system call is invoked by an application program inside the system. The information collection unit collects system call information including the parameter values of a corresponding function using the generated function information. The information storage unit stores the collected system call information in a nonvolatile memory area of the system.Type: ApplicationFiled: October 2, 2013Publication date: September 17, 2015Inventors: In-Cheol Shin, Sin-Kyu Kim, Jung-Taek Seo
-
Publication number: 20150128271Abstract: The present invention relates to an apparatus and method for collecting network data traffic. The apparatus for collecting network data traffic includes a graph creation unit, an initialization unit, an edge selection unit, a reconstruction unit, an algorithm application unit and a traffic collection route provision unit. The reconstruction unit converts the selected edge into an inactive edge and connects the inactive edge to two nodes, so that the reconstruction unit reconstructs the tree structure. The algorithm application unit applies a minimal spanning tree algorithm to the reconstructed tree structure. The traffic collection route provision unit eliminates a leaf node and a leaf edge from the tree structure to which the minimal spanning tree algorithm has been applied, and generates a monitoring tree for providing a traffic collection route minimizing a total weight of the edges.Type: ApplicationFiled: May 21, 2013Publication date: May 7, 2015Inventors: In-Cheol Shin, Yu-Seok Jeon, Sin-Kyu Kim, Jung-Taek Seo
-
Publication number: 20130280610Abstract: Provided is a composite electrode for a lithium secondary battery for improving output and a lithium secondary battery including the composite electrode, in which, in a composite electrode having two or more active materials mixed therein, an active material having a small particle size is included in the composite electrode by being coagulated and secondarily granulated so as to allow mixed active material particles to have a uniform size, and thus, electrical conductivity is improved to have high output characteristics.Type: ApplicationFiled: January 10, 2013Publication date: October 24, 2013Applicant: LG CHEM, LTD.Inventors: Sun Jung Hwang, Sin Kyu Kim, Yong Tae Lee, Hyun Kuk Noh, Geun Chang Chung, Keun Wan An
-
Publication number: 20130221283Abstract: Provided are a positive electrode active material for improving an output and a lithium secondary battery including the same. Particularly, graphite and conductive carbon which have shapes and sizes different from each other, may be simultaneously coated on a mixed positive electrode material of a 3-component system lithium-containing metal oxide having a layered structure and expressed as following Chemical Formula 1 and LiFePO4 having an olivine structure as an conductive material to improve high resistance occurrence and conductivity reduction phenomenon of a 3-component system lithium metal oxide due to a difference between particle sizes and surface areas of the 3-component system lithium-containing metal oxide and LiFePO4 olivine. Li1+aNixCoyMn1-x-yO2, 0?a<0.5, 0<x<1, 0<y<0.Type: ApplicationFiled: August 3, 2012Publication date: August 29, 2013Applicant: LG CHEM. LTD.Inventors: Song Taek OH, Sung Kyun CHANG, Sin Young PARK, Sun Jung HWANG, Jin Hyung LIM, Geun Chang CHUNG, Sin Kyu KIM, Jung Seok CHOI, Keun Wan AN
-
Publication number: 20130022872Abstract: Disclosed herein is a cathode active material including a lithium manganese oxide, in which the lithium manganese oxide has a spinel structure with a predetermined constitutional composition represented by Formula 1 described in the detailed description, wherein a conductive material is applied to the surface of lithium manganese oxide particles, so as to exhibit charge-discharge properties in the range of 2.5 to 3.5V as well as in the 4V region.Type: ApplicationFiled: February 16, 2012Publication date: January 24, 2013Applicant: LG CHEM, LTD.Inventors: Hyun Kuk Noh, Sin Kyu Kim, Geun-Chang Chung, Song-Taek Oh, Sanguck Lee, Jong Chan Kim
-
Publication number: 20110311869Abstract: A high capacity lithium secondary battery includes a lithium manganese oxide having a layered structure exhibiting a great irreversible capacity in the event of overcharging at a high voltage and a spinel-based lithium manganese oxide. Because it is activated at a high voltage of 4.45 V or higher based on a positive electrode potential, additional lithium for utilizing a 3V range of the spinel-based lithium manganese oxide can be provided and an even profile in the entire SOC area can be obtained. Because the lithium secondary battery includes the mixed positive electrode active material including the spinel-based lithium manganese oxide and the lithium manganese oxide having a layered structure, and is charged at a high voltage, its stability can be improved. Also, the high capacity battery having a large available SOC area and improved stability without causing an output shortage due to a rapid voltage drop in the SOC area can be implemented.Type: ApplicationFiled: June 23, 2011Publication date: December 22, 2011Applicant: LG CHEM, LTD.Inventors: Song Taek OH, Sun Kyu KIM, Geun Chang CHUNG, Sin Kyu KIM, Hyun Seok LEE, Bong Kook YOUN
-
Publication number: 20100267103Abstract: A method of fermenting animal horny substance, which includes a step of fermenting the mixture of animal horny substance and rice straw in order to ferment animal horny substance by using rice straw, so that not only water-soluble effective components in animal horny substance but also non-water-soluble effective components can be ingested.Type: ApplicationFiled: May 19, 2008Publication date: October 21, 2010Inventors: Sin-Kyu Kim, Jin-Sung Kim