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).
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Publication number: 20240421359Abstract: 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: ApplicationFiled: October 21, 2022Publication date: December 19, 2024Applicant: LG ENERGY SOLUTION, LTD.Inventors: Nam-Won KIM, Jung-Hoon KIM, Duk-Hyun RYU, Sang-Ho HONG
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Patent number: 12155059Abstract: 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: GrantFiled: March 31, 2020Date of Patent: November 26, 2024Assignee: LG ENERGY SOLUTION, LTD.Inventors: Nam Won Kim, Eun Sun Choi, So Ra Lee
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Publication number: 20240230933Abstract: 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: ApplicationFiled: May 3, 2022Publication date: July 11, 2024Inventors: Beom Jin MOON, Hyeong Sik KIM, Nam Won KIM, Yong Cheol GIL
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Patent number: 12009534Abstract: 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: GrantFiled: January 31, 2020Date of Patent: June 11, 2024Assignee: LG Energy Solution, Ltd.Inventors: Hyoung Kwon Kim, Hyeon Soo Sim, Ha Young Heo, Duk Hyun Ryu, Nam Won Kim
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Publication number: 20240134072Abstract: 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: ApplicationFiled: May 2, 2022Publication date: April 25, 2024Inventors: Beom Jin MOON, Hyeong Sik KIM, Nam Won KIM, Yong Cheol GIL
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Publication number: 20230032166Abstract: 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: ApplicationFiled: October 6, 2022Publication date: February 2, 2023Applicant: LG Energy Solution, Ltd.Inventors: Nam Won Kim, Pil Kyu Park, Han Gab Song, Duck Joong Yun, Dae Hyun Kim, An Soo Jeong
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Patent number: 11539044Abstract: 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: GrantFiled: August 20, 2018Date of Patent: December 27, 2022Assignee: LG ENERGY SOLUTION, LTD.Inventors: Nam Won Kim, Pil Kyu Park, Han Gab Song, Duck Joong Yun, Dea Hyun Kim, An Soo Jeong
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Patent number: 11495783Abstract: 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: GrantFiled: June 27, 2018Date of Patent: November 8, 2022Inventors: Nam Won Kim, Pil Kyu Park, Han Gab Song, Duck Joong Yun, Dae Hyun Kim, An Soo Jeong
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Publication number: 20220158170Abstract: 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: ApplicationFiled: March 31, 2020Publication date: May 19, 2022Applicant: LG ENERGY SOLUTION, LTD.Inventors: Nam Won KIM, Eun Sun CHOI, So Ra LEE
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Publication number: 20220013833Abstract: 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: ApplicationFiled: January 31, 2020Publication date: January 13, 2022Applicant: LG Energy Solution, Ltd.Inventors: Hyoung Kwon Kim, Hyeon Soo Sim, Ha Young Heo, Duk Hyun Ryu, Nam Won Kim
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Patent number: 11072007Abstract: 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: GrantFiled: July 3, 2018Date of Patent: July 27, 2021Inventors: An Soo Jeong, Pil Kyu Park, Han Gab Song, Duck Joong Yun, Dae Hyun Kim, Nam Won Kim
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Patent number: 11060961Abstract: 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: GrantFiled: September 7, 2018Date of Patent: July 13, 2021Inventors: An-Soo Jeong, Nam-Won Kim, Young-Tae Kim, Pil-Kyu Park, Han-Gab Song, Min-Gyu Kim
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Patent number: 11043669Abstract: 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: GrantFiled: June 1, 2018Date of Patent: June 22, 2021Inventors: Nam Won Kim, Pil Kyu Park, Han Gab Song, An Soo Jeong
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Patent number: 10996150Abstract: 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: GrantFiled: June 27, 2018Date of Patent: May 4, 2021Assignee: LG CHEM, LTD.Inventors: An-Soo Jeong, Young-Tae Kim, Nam-Won Kim, Min-Gyu Kim, Pil-Kyu Park, Han-Gab Song
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Publication number: 20210126249Abstract: 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: ApplicationFiled: August 20, 2018Publication date: April 29, 2021Applicant: LG CHEM, LTD.Inventors: Nam Won KIM, Pil Kyu PARK, Han Gab SONG, Duck Joong YUN, Dea Hyun KIM, An Soo JEONG
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Publication number: 20200225134Abstract: 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: ApplicationFiled: September 7, 2018Publication date: July 16, 2020Applicant: LG Chem, Ltd.Inventors: An-Soo Jeong, Nam-Won Kim, Young-Tae Kim, Pil-Kyu Park, Han-Gab Song, Min-Gyu Kim
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Publication number: 20200058962Abstract: 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: ApplicationFiled: June 1, 2018Publication date: February 20, 2020Applicant: LG Chem, Ltd.Inventors: Nam Won Kim, Pil Kyu Park, Han Gab Song, An Soo Jeong
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Publication number: 20190319256Abstract: 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: ApplicationFiled: June 27, 2018Publication date: October 17, 2019Applicant: LG Chem, Ltd.Inventors: Nam Won Kim, Pil Kyu Park, Han Gab Song, Duck Joong Yun, Dae Hyun Kim, An Soo Jeong
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Publication number: 20190265135Abstract: 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: ApplicationFiled: June 27, 2018Publication date: August 29, 2019Applicant: LG CHEM, LTD.Inventors: An-Soo JEONG, Young-Tae KIM, Nam-Won KIM, Min-Gyu KIM, Pil-Kyu PARK, Han-Gab SONG
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Publication number: 20190201952Abstract: 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: ApplicationFiled: July 3, 2018Publication date: July 4, 2019Applicant: LG Chem, Ltd.Inventors: An Soo Jeong, Pil Kyu Park, Han Gab Song, Duck Joong Yun, Dae Hyun Kim, Nam Won Kim