Patents by Inventor Sang-kyun Lee

Sang-kyun Lee 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).

  • Publication number: 20200067068
    Abstract: Disclosed is an apparatus for manufacturing an electrode or a solid electrolyte for an all-solid-state battery. The apparatus for manufacturing an electrode or a solid electrolyte for an all-solid-state battery includes a first roller member configured to press an electrode or a solid electrolyte for an all-solid-state battery, and a second roller member located to be spaced apart from the first roller member to press the electrode or the solid electrolyte for an all-solid-state battery. The first roller member and the second roller member are disposed at opposite locations based on the electrode or the solid electrolyte for an all-solid-state battery.
    Type: Application
    Filed: August 21, 2019
    Publication date: February 27, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Sang-Kyun Lee, Min-Wook Kim, Baeck-Boem Choi, Cha-Hun Ku
  • Patent number: 10541421
    Abstract: The present invention relates to a method of preparing a lithium secondary battery which may improve productivity and performance of the lithium secondary battery by visually measuring an electrolyte solution impregnation time for an electrode active material, setting an optimum estimated electrolyte solution impregnation time of the electrolyte solution for a battery based on a measured result, and reflecting the optimum estimated electrolyte solution impregnation time in a production process.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: January 21, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Jung Pil Lee, Sang Kyun Lee
  • Patent number: 10505170
    Abstract: The present invention relates to an electrode assembly. The electrode assembly comprises: a first separator sheet; and first and second electrode sheets respectively adhering to both sides of the first separator sheet, wherein both the surfaces of the first separator sheet have adhesion different from each other, the first electrode sheet adheres to a first surface, which has relatively high adhesion, of both the surfaces, and the second electrode sheet adheres to a second surface, which has relatively low adhesion, of both the surfaces.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: December 10, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Sang Kyun Lee, Cha Hun Ku, Sang Hun Kim, Tae Kyu Kim, Min Cheol Choi
  • Publication number: 20190355951
    Abstract: An electrode assembly for a secondary battery having reduced internal resistance while adhesion between a separator and an electrode is maintained and having improved electrolyte impregnation the electrode assembly including a separator having a processed area having undergone a corona discharging process and a non-processed area.
    Type: Application
    Filed: August 10, 2017
    Publication date: November 21, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Sang Kyun LEE, Ju Hyeon CHO, Cha-Hun KU, Seok Jin KIM, Duck Hoe KIM
  • Publication number: 20190299163
    Abstract: A water purifier comprising: a filter unit comprising at least one filter filtering water to generate purified water; a flow rate sensor measuring a flow rate of the water; a concentrated water channel discharging concentrated water, having been filtered by the filter unit; an extraction unit extracting the purified water; a flow rate control valve controlling a flow rate of purified water; an opening and closing degree measurement unit, measuring a degree of opening and closing of the flow rate control valve; a concentrated water ratio calculation unit, calculating a ratio between purified water and concentrated water, according to the degree of opening and closing of the flow rate control valve; and a controller, using the flow rate of water and the calculated ratio between purified water and concentrated water, to calculate amounts of water used, integrating the calculated amounts of water, and calculating a lifespan of the filter.
    Type: Application
    Filed: July 4, 2017
    Publication date: October 3, 2019
    Inventors: Jae-Hoon KIM, Young-Jae LEE, Su-Yong PARK, Sang-Kyun LEE, Jung-Hun LEE, Hyun-Woo LEE, Ju-Hyuk EOM, Min-Sub SONG, Sung-Han YUN, Dae-Sik KANG, Si-Jun PARK
  • Patent number: 10391333
    Abstract: Provided are a treatment apparatus using proton and ultrasound and a method for treating cancer using the same. The treatment apparatus includes a proton generator configured to emit a proton beam to a tumor of a human body, an ultrasound generator configured to emit an ultrasonic beam to the tumor in a direction crossing an emission path of the proton beam, and a sensor configured to measure an acoustic signal generated during the emission of the proton beam.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: August 27, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Dong-Ho Shin, Sang Kyun Lee, Seunghwan Kim, Moon Youn Jung
  • Publication number: 20190215944
    Abstract: The present invention relates to a plasma generating apparatus for a secondary battery. The plasma generating apparatus for the secondary battery comprises a roller part comprising a transfer roller that transfers a separator and a metal member built in the transfer roller, and a plasma generating part comprising a main body spaced apart from the transfer roller and a plurality of electrode members disposed on positions that are spaced apart from each other in a direction of both ends of the main body and partially generating a plasma between the metal member and the main body to form a patterned bonding layer on a surface of the separator, wherein the plurality of electrode members are detachably coupled to the main body to adjust a number of the electrode members coupled to the main body based on a size of the separator.
    Type: Application
    Filed: March 13, 2019
    Publication date: July 11, 2019
    Inventors: Sang Kyun Lee, Sang Ho Bae, Duck Hoe Kim, Cha Hun Ku
  • Publication number: 20190207243
    Abstract: A plasma generating apparatus for a secondary battery, including a roller part having a transfer roller configured to transfer a separator and a metal member built in the transfer roller, and a plasma generating part interacting with the metal member to generate plasma and thereby to form a mask that is patterned on a surface of the separator and has a bonding force.
    Type: Application
    Filed: January 9, 2018
    Publication date: July 4, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Sang Kyun LEE, Sang Baek RYU, Kieun SUNG, Cha Hun KU, Duck Hoe KIM
  • Patent number: 10270102
    Abstract: The present disclosure relates to an electrode that may minimize an electrical resistance increase caused by a binder polymer or a conductive material used in the electrode and provide a high capacity, a method for manufacturing the same, and an electrochemical device comprising the electrode, and an electrode mix slurry is prepared using a high shearing mixing process for each step such that fine grained conductive material and a binder polymer are uniformly dispersed in an electrode mix, and a high capacity electrode active material is used in the electrode mix, to manufacture a high capacity electrochemical device.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: April 23, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Sang-Kyun Lee, Byoung-Bae Lee, Ki-Young Kwon, Bok-Kyu Choi, Sei-Woon Oh
  • Publication number: 20190044177
    Abstract: The present invention relates to an electrode assembly and a method for manufacturing the same, and more particularly, to an electrode assembly in which a degree of alignment of cells is improved and a method for manufacturing the same. An electrode assembly according to the present invention comprises a separator sheet folded in a zigzag shape and a unit cell having a structure in which an electrode and a separator are alternately stacked, wherein the unit cell is repeatedly disposed between the separator sheet that is folded in a zigzag shape, and at least a portion of the unit cell and at least a portion of the separator sheet are bonded to each other.
    Type: Application
    Filed: July 7, 2017
    Publication date: February 7, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Sang Kyun LEE, Jung Kwan PYO, Cha Hun KU
  • Publication number: 20190027777
    Abstract: A unit cell for a secondary battery includes a central electrode having a first polarity, a pair of separators respectively laminated on both surfaces the central electrode, and an upper electrode and a lower electrode respectively laminated on the pair of separators and having a second polarity, wherein the separator has a patterned adhesive force.
    Type: Application
    Filed: September 26, 2017
    Publication date: January 24, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Sang-Kyun LEE, Ju-Hyeon CHO, Duck-Hoe KIM, Cha-Hun KU
  • Publication number: 20180337392
    Abstract: The present invention relates to an electrode, for reducing a difference in ductility between a non-coating portion and a coating portion of the electrode, a method for manufacturing the electrode, and a roller for manufacturing the electrode. Also, the electrode according to the present invention includes an electrode foil, a coating portion coated with an electrode active material on one surface of the electrode foil, and a non-coating portion which is disposed adjacent to the coating portion on the one surface of the electrode foil, and is not coated with the electrode active material and on which a pattern is disposed.
    Type: Application
    Filed: July 3, 2017
    Publication date: November 22, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Sang Kyun Lee, Seok Jin Kim, Cha Hun Ku
  • Publication number: 20180323415
    Abstract: The present invention relates to an electrode assembly. The electrode assembly comprises: a first separator sheet; and a first electrode sheet and a second electrode sheet, which respectively adhere to both surfaces of the first separator sheet, wherein patterned masks having different adhesion force are respectivley disposed on both the surfaces of the first separator sheet, and the first electrode sheet adheres to the mask of a first surface of both the surfaces, which has relatively high adhesion force, and the second electrode sheet adheres to the mask of a second surface having relatively low adhesion force.
    Type: Application
    Filed: January 12, 2017
    Publication date: November 8, 2018
    Applicant: LG CHEM, LTD.
    Inventors: Sang Kyun LEE, Cha Hun KU, Jung Kwan PYO, Ju Hyeon CHO
  • Publication number: 20180289979
    Abstract: Provided are a treatment apparatus using proton and ultrasound and a method for treating cancer using the same. The treatment apparatus includes a proton generator configured to emit a proton beam to a tumor of a human body, an ultrasound generator configured to emit an ultrasonic beam to the tumor in a direction crossing an emission path of the proton beam, and a sensor configured to measure an acoustic signal generated during the emission of the proton beam.
    Type: Application
    Filed: January 15, 2018
    Publication date: October 11, 2018
    Inventors: Dong-Ho SHIN, Sang Kyun LEE, Seunghwan KIM, Moon Youn JUNG
  • Publication number: 20180205090
    Abstract: The present invention relates to a method of preparing a lithium secondary battery which may improve productivity and performance of the lithium secondary battery by visually measuring an electrolyte solution impregnation time for an electrode active material, setting an optimum estimated electrolyte solution impregnation time of the electrolyte solution for a battery based on a measured result, and reflecting the optimum estimated electrolyte solution impregnation time in a production process.
    Type: Application
    Filed: March 30, 2017
    Publication date: July 19, 2018
    Applicant: LG CHEM, LTD.
    Inventors: Jung Pil LEE, Sang Kyun LEE
  • Publication number: 20180175337
    Abstract: The present invention relates to a sealing apparatus for a secondary battery, which seals a sealing part of a case in which an electrode assembly and an electrolyte are accommodated, and the sealing apparatus comprises a sealing member comprising a first sealing piece and a second sealing piece, which thermally fuse a surface of the sealing part to seal the sealing part, wherein the first sealing piece and the second sealing piece comprise a plurality of thermal fusion parts, which are disposed from an outer end of a surface of the sealing part toward an inner end that is opposite to the outer end to thermally fuse the surface of the sealing part, and non-thermal fusion parts, which are disposed between the plurality of thermal fusion parts and do not seal the surface of the sealing part.
    Type: Application
    Filed: October 11, 2016
    Publication date: June 21, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Sang Kyun LEE, Cha Hun KU
  • Publication number: 20180159104
    Abstract: The present invention relates to an electrode assembly. The electrode assembly comprises: a first separator sheet; and first and second electrode sheets respectively adhering to both sides of the first separator sheet, wherein both the surfaces of the first separator sheet have adhesion different from each other, the first electrode sheet adheres to a first surface, which has relatively high adhesion, of both the surfaces, and the second electrode sheet adheres to a second surface, which has relatively low adhesion, of both the surfaces.
    Type: Application
    Filed: July 5, 2016
    Publication date: June 7, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Sang Kyun Lee, Cha Hun Ku, Sang Hun Kim, Tae Kyu Kim, Min Cheol Choi
  • Patent number: 9876161
    Abstract: A method of fabricating a flexible piezoelectric energy harvesting device is provided. The method includes forming a piezoelectric layer to include a plurality of first piezoelectric lines spaced apart from each other in one direction and a plurality of second piezoelectric lines respectively filling spaces between the first piezoelectric lines, then placing the piezoelectric layer on a first flexible electrode substrate to come in direct contact with the first flexible electrode, and forming a second flexible electrode substrate on the piezoelectric layer.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: January 23, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sang Kyun Lee, Yil Suk Yang, Jong-Kee Kwon
  • Patent number: 9862599
    Abstract: A method of manufacturing an apparatus for harvesting and storing piezoelectric energy includes forming a groove at a side on a substrate. The method further includes embedding and planarizing a polymer in the groove, forming a piezoelectric energy harvesting device, which converts and stores an external vibration into electric energy, onto the substrate, and forming a piezoelectric MEMS cantilever by forming a hole at a side of the piezoelectric energy harvesting device and by removing the polymer in the groove through the hole.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: January 9, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sang Kyun Lee, Yil Suk Yang
  • Patent number: 9780698
    Abstract: The inventive concept discloses a piezoelectric energy harvesting array and a method of manufacturing the same. The manufacturing method may include forming a plurality of piezoelectric energy harvesting devices; connecting masses to one side of the piezoelectric energy harvesting devices and connecting the other side of the piezoelectric energy harvesting devices facing the masses to a base; and individually tuning a resonant frequency of each of the piezoelectric energy harvesting devices to prevent mismatch of resonant frequency when the masses vibrate.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: October 3, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sang Kyun Lee, Moonkeun Kim