Patents by Inventor Nam Won Kim

Nam Won 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).

  • Publication number: 20240421359
    Abstract: A secondary battery including an electrode assembly having a jelly-roll shape, a positive electrode, and a negative electrode including a negative electrode current collector and a negative electrode active material layer on the negative electrode current collector. The negative electrode active material layer includes a first region in contact with the negative electrode current collector including a silicon-containing compound and natural graphite as an active material, a mixed region in contact with the first region including a silicon-containing compound, natural graphite and artificial graphite as an active material, and a second region in contact with the mixed region including a silicon-containing compound and artificial graphite as an active material. The secondary battery has a high form factor applied to medium and large scale devices and may be a cylindrical secondary battery with improved fast charging characteristics, reduced swelling, suppressed lithium plating and high capacity characteristics.
    Type: Application
    Filed: October 21, 2022
    Publication date: December 19, 2024
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Nam-Won KIM, Jung-Hoon KIM, Duk-Hyun RYU, Sang-Ho HONG
  • Patent number: 12155059
    Abstract: A secondary battery includes: a first electrode provided with a first collector and a first electrode active material applied on at least one surface of the first collector; and a second electrode provided with a second collector and a second electrode active material applied on at least one surface of the second collector, wherein an uneven coating portion at which the first electrode active material irregularly increases in amount and is applied is provided on at least one of a coating start portion or a coating end portion of the first electrode active material, and an inactive coating portion configured to cover the uneven coating portion is provided on at least one of a coating start portion or a coating end portion of the second electrode active material. A method of manufacturing the secondary battery is also provided.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: November 26, 2024
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Nam Won Kim, Eun Sun Choi, So Ra Lee
  • Publication number: 20240230933
    Abstract: The present inventive concept relates to: a radiation detector including a bendable radiation detecting panel and a radiation inspection apparatus including same. The radiation detector includes: a radiation detecting panel which is flexible, extending in a first direction, and detecting radiation incident to a first face; and a bending support unit which is plate-shaped, provided on a second face of the radiation detecting panel opposite to the first face to support the radiation detecting panel, and having a flexibility. The flexibility of the bending support unit is less than a flexibility of the radiation detecting panel.
    Type: Application
    Filed: May 3, 2022
    Publication date: July 11, 2024
    Inventors: Beom Jin MOON, Hyeong Sik KIM, Nam Won KIM, Yong Cheol GIL
  • Patent number: 12009534
    Abstract: According to one aspect of the present invention, a secondary battery has a bent part disposed on an end of an upper portion of the battery can. The bent part is bent inward toward a top cap to fix the top cap. The secondary battery is configured such that, when an internal pressure of the battery can exceeds a predetermined value, a region (R) in which the top cap and the bent part overlap each other when viewed from above is reduced by deformation of the top cap or the bent part to allow an entire region of the top cap to become spaced further from the battery can.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: June 11, 2024
    Assignee: LG Energy Solution, Ltd.
    Inventors: Hyoung Kwon Kim, Hyeon Soo Sim, Ha Young Heo, Duk Hyun Ryu, Nam Won Kim
  • Publication number: 20240134072
    Abstract: The present inventive concept relates to: a radiation detector including a bendable radiation detecting panel and a radiation inspection apparatus including same. The radiation detector includes: a radiation detecting panel which is flexible, extending in a first direction, and detecting radiation incident to a first face; and a bending support unit which is plate-shaped, provided on a second face of the radiation detecting panel opposite to the first face to support the radiation detecting panel, and having a flexibility. The flexibility of the bending support unit is less than a flexibility of the radiation detecting panel.
    Type: Application
    Filed: May 2, 2022
    Publication date: April 25, 2024
    Inventors: Beom Jin MOON, Hyeong Sik KIM, Nam Won KIM, Yong Cheol GIL
  • Publication number: 20230032166
    Abstract: A system for manufacturing an electrode for a secondary battery is disclosed herein. In an embodiment, the system for manufacturing the electrode for the secondary battery comprises a supply roller for supplying a collector having a long sheet shape; an electrode active material coating device for applying an electrode active material to a surface of the collector supplied by the supply roller to manufacture an unfinished electrode; a rolling roller for rolling a surface of the unfinished electrode and adjusting a thickness of the electrode active material to manufacture a finished electrode; and an electrode quality inspection device for inspecting quality of the electrode through a surface roughness value of the rolling roller, a surface roughness value of the surface of the electrode, and a rolling load value of the rolling roller.
    Type: Application
    Filed: October 6, 2022
    Publication date: February 2, 2023
    Applicant: LG Energy Solution, Ltd.
    Inventors: Nam Won Kim, Pil Kyu Park, Han Gab Song, Duck Joong Yun, Dae Hyun Kim, An Soo Jeong
  • Patent number: 11539044
    Abstract: The present disclosure relates to a secondary battery electrode, a manufacturing method for the same, and an electrode assembly, and more particularly, to a secondary battery electrode, a manufacturing method for the same, and an electrode assembly having improved stability. In accordance with an exemplary embodiment, a secondary battery electrode includes a current collector that extends in one direction, a first active material layer provided on one surface of the current collector and including a first inclined portion and a first protruding portion, and a second active material layer provided on the other surface of the current collector and including a second inclined portion and a second protruding portion. In particular, a position of the second protruding portion is controlled on the second active material layer to be disposed at a position that is not directly opposite to the first inclined portion with respect to the current collector.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: December 27, 2022
    Assignee: LG ENERGY SOLUTION, LTD.
    Inventors: Nam Won Kim, Pil Kyu Park, Han Gab Song, Duck Joong Yun, Dea Hyun Kim, An Soo Jeong
  • Patent number: 11495783
    Abstract: A system for manufacturing an electrode for a secondary battery is disclosed herein. In an embodiment, the system for manufacturing the electrode for the secondary battery comprises a supply roller for supplying a collector having a long sheet shape; an electrode active material coating device for applying an electrode active material to a surface of the collector supplied by the supply roller to manufacture an unfinished electrode; a rolling roller for rolling a surface of the unfinished electrode and adjusting a thickness of the electrode active material to manufacture a finished electrode; and an electrode quality inspection device for inspecting quality of the electrode through a surface roughness value of the rolling roller, a surface roughness value of the surface of the electrode, and a rolling load value of the rolling roller.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: November 8, 2022
    Inventors: Nam Won Kim, Pil Kyu Park, Han Gab Song, Duck Joong Yun, Dae Hyun Kim, An Soo Jeong
  • Publication number: 20220158170
    Abstract: A secondary battery includes: a first electrode provided with a first collector and a first electrode active material applied on at least one surface of the first collector; and a second electrode provided with a second collector and a second electrode active material applied on at least one surface of the second collector, wherein an uneven coating portion at which the first electrode active material irregularly increases in amount and is applied is provided on at least one of a coating start portion or a coating end portion of the first electrode active material, and an inactive coating portion configured to cover the uneven coating portion is provided on at least one of a coating start portion or a coating end portion of the second electrode active material. A method of manufacturing the secondary battery is also provided.
    Type: Application
    Filed: March 31, 2020
    Publication date: May 19, 2022
    Applicant: LG ENERGY SOLUTION, LTD.
    Inventors: Nam Won KIM, Eun Sun CHOI, So Ra LEE
  • Publication number: 20220013833
    Abstract: According to one aspect of the present invention, a secondary battery has a bent part disposed on an end of an upper portion of the battery can. The bent part is bent inward toward a top cap to fix the top cap. The secondary battery is configured such that, when an internal pressure of the battery can exceeds a predetermined value, a region (R) in which the top cap and the bent part overlap each other when viewed from above is reduced by deformation of the top cap or the bent part to allow an entire region of the top cap to become spaced further from the battery can.
    Type: Application
    Filed: January 31, 2020
    Publication date: January 13, 2022
    Applicant: LG Energy Solution, Ltd.
    Inventors: Hyoung Kwon Kim, Hyeon Soo Sim, Ha Young Heo, Duk Hyun Ryu, Nam Won Kim
  • Patent number: 11072007
    Abstract: The present invention relates to a system for manufacturing an electrode for a secondary battery. The system for manufacturing the electrode for the secondary battery comprises a supply roller supplying a collector having a long sheet shape; an electrode active material coating device applying an electrode active material to a surface of the collector supplied by the supply roller to manufacture an unfinished electrode; a rolling roller rolling a surface of the unfinished electrode and adjusting a thickness of the electrode active material to manufacture a finished electrode; and an electrode quality inspection device inspecting quality of the electrode through a surface roughness value of the rolling roller and a surface roughness value of the electrode.
    Type: Grant
    Filed: July 3, 2018
    Date of Patent: July 27, 2021
    Inventors: An Soo Jeong, Pil Kyu Park, Han Gab Song, Duck Joong Yun, Dae Hyun Kim, Nam Won Kim
  • Patent number: 11060961
    Abstract: Apparatus and methods of evaluating brittleness by measuring force applied to an electrode specimen by simulating a wound state of a jelly-roll type electrode assembly are disclosed herein. In an embodiment, a brittleness evaluation apparatus includes a jig unit, a driving unit, and a measurement analyzing unit. The jig unit includes two jigs, a groove formed between the jigs, a pressing plate, and guides. The jigs facing each other and have top surfaces formed in a horizontal plane and configured to receive a specimen arranged on the top surfaces along a length direction extending between and along the top surfaces. The pressing plate is arranged perpendicular to the length direction and configured to cause the specimen to bend by descending into the groove. The guides are located on each of the top surfaces of the jigs and configured to prevent distortion of the specimen during descent of the pressing plate.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: July 13, 2021
    Inventors: An-Soo Jeong, Nam-Won Kim, Young-Tae Kim, Pil-Kyu Park, Han-Gab Song, Min-Gyu Kim
  • Patent number: 11043669
    Abstract: The present invention relates to a secondary battery. The secondary battery comprises an electrode assembly in which an electrode and a separator are alternately stacked and wound, wherein the electrode comprises a collector, a first coating layer in which an electrode active material is applied to a surface of the collector, and a second coating layer in which the electrode active material is applied to the outside of the first coating layer, wherein an end of the second coating layer has a length less than an end of first coating layer in a winding direction of the electrode, and a stepped portion occurs between the end of the first coating layer and the end of the second coating layer in a direction outward from a winding center.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: June 22, 2021
    Inventors: Nam Won Kim, Pil Kyu Park, Han Gab Song, An Soo Jeong
  • Patent number: 10996150
    Abstract: A jig assembly for measuring the tensile strength of an electrode at a bend having a similar radius to a core, an apparatus for measuring bending tensile strength including the jig assembly, and a method for measuring bending tensile strength that measures the tensile strength of an electrode at a bend having a similar radius to a core using the apparatus for measuring bending tensile strength are provided. The jig assembly of the present disclosure includes a fixing unit configured to fix a first end part of a sample, and a plate shaped bending jig configured to provide a one point bend to a lengthwise direction cross section of the sample and to guide a second end part of the sample toward a tensile testing load unit. According to the present disclosure, it is possible to measure the tensile strength of the electrode under a similar condition to a winding process before the electrode is used in real winding applications.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: May 4, 2021
    Assignee: LG CHEM, LTD.
    Inventors: An-Soo Jeong, Young-Tae Kim, Nam-Won Kim, Min-Gyu Kim, Pil-Kyu Park, Han-Gab Song
  • Publication number: 20210126249
    Abstract: The present disclosure relates to a secondary battery electrode, a manufacturing method for the same, and an electrode assembly, and more particularly, to a secondary battery electrode, a manufacturing method for the same, and an electrode assembly having improved stability. In accordance with an exemplary embodiment, a secondary battery electrode includes a current collector that extends in one direction, a first active material layer provided on one surface of the current collector and including a first inclined portion and a first protruding portion, and a second active material layer provided on the other surface of the current collector and including a second inclined portion and a second protruding portion. In particular, a position of the second protruding portion is controlled on the second active material layer to be disposed at a position that is not directly opposite to the first inclined portion with respect to the current collector.
    Type: Application
    Filed: August 20, 2018
    Publication date: April 29, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Nam Won KIM, Pil Kyu PARK, Han Gab SONG, Duck Joong YUN, Dea Hyun KIM, An Soo JEONG
  • Publication number: 20200225134
    Abstract: Apparatus and methods of evaluating brittleness by measuring force applied to an electrode specimen by simulating a wound state of a jelly-roll type electrode assembly are disclosed herein. In an embodiment, a brittleness evaluation apparatus includes a jig unit, a driving unit, and a measurement analyzing unit. The jig unit includes two jigs, a groove formed between the jigs, a pressing plate, and guides. The jigs facing each other and have top surfaces formed in a horizontal plane and configured to receive a specimen arranged on the top surfaces along a length direction extending between and along the top surfaces. The pressing plate is arranged perpendicular to the length direction and configured to cause the specimen to bend by descending into the groove. The guides are located on each of the top surfaces of the jigs and configured to prevent distortion of the specimen during descent of the pressing plate.
    Type: Application
    Filed: September 7, 2018
    Publication date: July 16, 2020
    Applicant: LG Chem, Ltd.
    Inventors: An-Soo Jeong, Nam-Won Kim, Young-Tae Kim, Pil-Kyu Park, Han-Gab Song, Min-Gyu Kim
  • Publication number: 20200058962
    Abstract: The present invention relates to a secondary battery. The secondary battery comprises an electrode assembly in which an electrode and a separator are alternately stacked and wound, wherein the electrode comprises a collector, a first coating layer in which an electrode active material is applied to a surface of the collector, and a second coating layer in which the electrode active material is applied to the outside of the first coating layer, wherein an end of the second coating layer has a length less than an end of first coating layer in a winding direction of the electrode, and a stepped portion occurs between the end of the first coating layer and the end of the second coating layer in a direction outward from a winding center.
    Type: Application
    Filed: June 1, 2018
    Publication date: February 20, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Nam Won Kim, Pil Kyu Park, Han Gab Song, An Soo Jeong
  • Publication number: 20190319256
    Abstract: A system for manufacturing an electrode for a secondary battery is disclosed herein. In an embodiment, the system for manufacturing the electrode for the secondary battery comprises a supply roller for supplying a collector having a long sheet shape; an electrode active material coating device for applying an electrode active material to a surface of the collector supplied by the supply roller to manufacture an unfinished electrode; a rolling roller for rolling a surface of the unfinished electrode and adjusting a thickness of the electrode active material to manufacture a finished electrode; and an electrode quality inspection device for inspecting quality of the electrode through a surface roughness value of the rolling roller, a surface roughness value of the surface of the electrode, and a rolling load value of the rolling roller.
    Type: Application
    Filed: June 27, 2018
    Publication date: October 17, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Nam Won Kim, Pil Kyu Park, Han Gab Song, Duck Joong Yun, Dae Hyun Kim, An Soo Jeong
  • Publication number: 20190265135
    Abstract: A jig assembly for measuring the tensile strength of an electrode at a bend having a similar radius to a core, an apparatus for measuring bending tensile strength including the jig assembly, and a method for measuring bending tensile strength that measures the tensile strength of an electrode at a bend having a similar radius to a core using the apparatus for measuring bending tensile strength are provided. The jig assembly of the present disclosure includes a fixing unit configured to fix a first end part of a sample, and a plate shaped bending jig configured to provide a one point bend to a lengthwise direction cross section of the sample and to guide a second end part of the sample toward a tensile testing load unit. According to the present disclosure, it is possible to measure the tensile strength of the electrode under a similar condition to a winding process before the electrode is used in real winding applications.
    Type: Application
    Filed: June 27, 2018
    Publication date: August 29, 2019
    Applicant: LG CHEM, LTD.
    Inventors: An-Soo JEONG, Young-Tae KIM, Nam-Won KIM, Min-Gyu KIM, Pil-Kyu PARK, Han-Gab SONG
  • Publication number: 20190201952
    Abstract: The present invention relates to a system for manufacturing an electrode for a secondary battery. The system for manufacturing the electrode for the secondary battery comprises a supply roller supplying a collector having a long sheet shape; an electrode active material coating device applying an electrode active material to a surface of the collector supplied by the supply roller to manufacture an unfinished electrode; a rolling roller rolling a surface of the unfinished electrode and adjusting a thickness of the electrode active material to manufacture a finished electrode; and an electrode quality inspection device inspecting quality of the electrode through a surface roughness value of the rolling roller and a surface roughness value of the electrode.
    Type: Application
    Filed: July 3, 2018
    Publication date: July 4, 2019
    Applicant: LG Chem, Ltd.
    Inventors: An Soo Jeong, Pil Kyu Park, Han Gab Song, Duck Joong Yun, Dae Hyun Kim, Nam Won Kim