Patents by Inventor Dae Kyu Kim

Dae 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: 12294048
    Abstract: Disclosed are a finishing tape which is capable of reducing flow of an electrode assembly in a casing and a secondary battery including the same. As an example, disclosed is a finishing tape comprising: a first layer formed of a resin and forming a substrate; and a second layer formed on at least one side of the first layer and including a microsphere structure.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: May 6, 2025
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Dae Kyu Kim
  • Publication number: 20250105479
    Abstract: An insulator for a rechargeable battery is disclosed. The insulator may include: a first insulator including a plurality of first through holes; and a second insulator including a plurality of second through holes. A connection portion between a first one of the plurality of second through holes and an adjacent second one of the plurality of second through holes overlaps the first through hole.
    Type: Application
    Filed: August 14, 2024
    Publication date: March 27, 2025
    Inventors: Wonik LEE, Dae Kyu KIM
  • Patent number: 12244040
    Abstract: A secondary battery includes: a cylindrical case; an electrode assembly accommodated in the cylindrical case and wound in a cylindrical shape; and a current interrupt device electrically connected to the electrode assembly and sealing the cylindrical case. The current interrupt device includes a cap-down electrically connected to the electrode assembly, a safety vent electrically connected to the cap-down, and an insulating gasket between the cap-down and the safety vent and covering outer circumferences of the cap-down and the safety vent.
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: March 4, 2025
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Jong Jun Park, Dae Kyu Kim
  • Publication number: 20250070370
    Abstract: An embodiment of the present invention relates to a cylindrical secondary battery, and the cylindrical secondary battery may comprise: a cylindrical can; an electrode assembly which includes a first electrode plate, a second electrode plate, and a separator wound together and is accommodated in the can; and a cap assembly which is insulated from the can, is electrically connected to the electrode assembly, and has a hole formed therethrough to communicate with the inside of the can. According to the embodiment of the present invention, a degassing function is applied so that gas generated before product delivery can be removed and thus deformation of the can and the cap assembly can be reduced. In addition, the occurrence of swelling of the electrode assembly due to internal gas generation can be prevented and thus performance degradation of the secondary battery can be reduced.
    Type: Application
    Filed: October 25, 2022
    Publication date: February 27, 2025
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Sung Gwi Ko, Geun Ho Seo, Dae Kyu Kim
  • Publication number: 20250062461
    Abstract: A secondary battery includes a cylindrical can, an electrode assembly in the cylindrical can together with an electrolytic solution, and a cap assembly coupled to the top of the cylindrical can, the cap assembly including a cap-up, a safety plate coupled to a lower surface of the cap-up, and an insulation gasket wrapping the cap-up and the safety plate, the insulation gasket filling a gap filling portion between the cap-up and the safety plate.
    Type: Application
    Filed: June 27, 2024
    Publication date: February 20, 2025
    Inventors: Dae Kyu KIM, Jong Jun PARK
  • Publication number: 20250062455
    Abstract: A secondary battery includes a cylindrical can, an electrode assembly in the cylindrical can together with an electrolytic solution, and a cap assembly coupled to the top of the cylindrical can, the cap assembly including a cap-up including a cap-up circumference flat portion and a cap-up circumference bent portion bent from the cap-up circumference flat portion in a downward direction and a safety plate coupled to the cap-up circumference flat portion and the cap-up circumference bent portion.
    Type: Application
    Filed: June 24, 2024
    Publication date: February 20, 2025
    Inventors: Han Sol MA, Ju Hyung LEE, Yo Seob KIM, Byung Jin YOON, Dae Kyu KIM
  • Patent number: 12230873
    Abstract: An antenna package includes an antenna device including an antenna dielectric layer and an antenna unit formed on the antenna dielectric layer, and an intermediate circuit board electrically connected to the antenna unit. The intermediate circuit board includes a core layer and a signal line formed on a surface of the core layer and electrically connected to the antenna unit. A width of one end portion of the signal line connected to the antenna unit is smaller than a width of the other end portion opposite to the one end portion of the signal line. Impedance mismatching is prevented by the construction of the signal line to improve antenna properties.
    Type: Grant
    Filed: January 24, 2023
    Date of Patent: February 18, 2025
    Assignee: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Na Yeon Kim, Sung Hoe Kim, Dae Kyu Kim, Byung Eun Jeon
  • Patent number: 12225663
    Abstract: An antenna structure according to an embodiment includes an antenna device, a circuit board connected to the antenna device and including an inner insulation layer, and an outer insulation layer formed on the antenna device to cover the antenna unit and a portion of the circuit board. A portion of the inner insulation layer covered by the outer insulation layer may have a smaller thickness than a thickness of a portion of the inner insulation layer not covered by the outer insulation layer.
    Type: Grant
    Filed: April 7, 2023
    Date of Patent: February 11, 2025
    Assignee: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Na Yeon Kim, Dae Kyu Kim, Han Sub Ryu
  • Patent number: 12202072
    Abstract: The present invention relates to a secondary battery capable of improving the coupling force between a safety vent and a cap-up. For example, disclosed is a secondary battery comprising: an electrode assembly; a case for accommodating the electrode assembly; a cap assembly coupled to the upper part of the case; and a gasket interposed between the cap assembly and the case, wherein the cap assembly includes a cap-up and a safety vent, which is provided at the lower part of the cap-up and has a vent extension part extending to the upper part of the cap-up so as to encompass the edge of the cap-up, a welding region, in which the safety vent and the cap-up are welded and coupled by laser welding, is formed in the vent extension part, and the welding region is formed in a line shape.
    Type: Grant
    Filed: April 13, 2023
    Date of Patent: January 21, 2025
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Sung Gwi Ko, Dae Kyu Kim, Jin Young Moon
  • Patent number: 12206384
    Abstract: An impedance converter for an antenna includes a first port receiving a power from an antenna driving integrated circuit, an impedance modulator connected to the first port to convert an impedance, and a second port connected to the modulator and configured to perform a feeding to an antenna unit. The second port has an impedance higher than that of the first port. Impedance mismatching is prevented by the impedance modulator to improve antenna properties.
    Type: Grant
    Filed: January 24, 2023
    Date of Patent: January 21, 2025
    Assignee: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Sung Hoe Kim, Na Yeon Kim, Dae Kyu Kim, Byung Eun Jeon
  • Patent number: 12199295
    Abstract: The present invention relates to a secondary battery, wherein the length of a second bending portion of a safety plate covering an extension portion of a cap-up can be adjusted to prevent deformation of the safety plate and improve the sealing force of the secondary battery, even when a crimping part having a flat upper structure in which the sealing force can deteriorate due to the low compression rate of an insulating gasket is used. For example, disclosed is a secondary battery comprising: a cylindrical can; an electrode assembly which, together with an electrolyte, is accommodated in the cylindrical can; a cap assembly coupled to an upper portion of the cylindrical can; and an insulating gasket interposed between the cap assembly and the cylindrical can. The cap assembly comprises: a cap-up; and a safety plate which is installed below the cap-up and has a second bending portion that surrounds an extension portion of an edge of the cap-up and covers a portion of the upper surface of the extension portion.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: January 14, 2025
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Dae Kyu Kim, Jin Young Moon, Sung Gwi Ko
  • Publication number: 20250015464
    Abstract: A rechargeable battery includes an electrode assembly, a can accommodating the electrode assembly in an interior space, and a cap assembly coupled to the can to seal the can. The cap assembly includes a cap-up configured to contact an external device. The cap-up includes a base portion, a through-hole at a center of the base portion, a terminal portion located farther from the electrode assembly than the base portion, and a number of support portions connecting the base portion to the terminal portion. The terminal portion includes a protruding portion extending outward from an edge located between adjacent support portions.
    Type: Application
    Filed: May 8, 2024
    Publication date: January 9, 2025
    Inventors: Dae Kyu KIM, Kwangsoo SEO
  • Publication number: 20240421417
    Abstract: A rechargeable battery includes an electrode assembly, a can accommodating the electrode assembly in an internal region of the can, and a cap assembly coupled to the can to seal the can. The cap assembly includes a safety vent and a cap down stacked with a connecting member interposed between the safety vent and the cap down. The safety vent comprises a central part joined to the cap down, a middle part comprising a step portion and a notch groove, a fusion part in contact with the connecting member, and a wing part surrounding the fusion part. At least three of the central part, middle part, the fusion part, or the wing part have different thicknesses.
    Type: Application
    Filed: May 30, 2024
    Publication date: December 19, 2024
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Dae Kyu Kim, Jongjun Park, Kwangsoo Seo, Shinjung Kim
  • Publication number: 20240291123
    Abstract: A secondary battery includes: an electrode assembly comprising a lead tab; a case configured to accommodate the electrode assembly and an electrolyte solution; a cap assembly electrically connected to the lead tab, and coupled to the case to seal the case; and an insulation plate between the electrode assembly and the cap assembly within the case, and having a tab opening configured to enable the lead tab to be drawn out, wherein the insulation plate comprises plurality of linear members spaced apart from each other, and a plurality of openings having a size in a range of 0.1 mm to 3 mm are regularly positioned between the plurality of linear members.
    Type: Application
    Filed: October 12, 2023
    Publication date: August 29, 2024
    Inventor: Dae Kyu KIM
  • Publication number: 20240291153
    Abstract: An antenna structure may include a transmission antenna unit group, and a reception antenna unit group spaced apart from the transmission antenna unit group in a first direction. The transmission antenna unit group includes a first transmission antenna unit and a second transmission antenna unit having a length in a second direction greater than a length of the first transmission antenna unit in the second direction, the second direction being perpendicular to the first direction. The reception antenna unit group includes a plurality of reception antenna units spaced apart from the first transmission antenna unit in the first direction and being arranged in a single row.
    Type: Application
    Filed: February 21, 2024
    Publication date: August 29, 2024
    Inventors: KI HUN SUNG, SUNG JOON HONG, DAE KYU KIM, HEE JUN PARK, MEE AE HUR
  • Publication number: 20240291124
    Abstract: The secondary battery comprises an electrode assembly including a lead tab, a case accommodating the electrode assembly and an electrolyte solution, a cap assembly electrically connected to the lead tab, and coupled to the case to seal the case, and an insulating plate between the electrode assembly and the cap assembly in the case, defining a tab opening for drawing out the lead tab, and including thin film portions respectively defining cutouts for passage of electrolyte solution or gas.
    Type: Application
    Filed: October 16, 2023
    Publication date: August 29, 2024
    Inventor: Dae Kyu KIM
  • Publication number: 20240283166
    Abstract: An antenna structure may include a transmission antenna unit group, and a reception antenna unit group spaced apart from the transmission antenna unit group in a first direction. The transmission antenna unit group includes a first transmission antenna unit, and a second transmission antenna unit having a length in a second direction greater than a length of the first transmission antenna unit in the second direction, the second direction being perpendicular to the first direction. The reception antenna unit group includes a first reception antenna unit spaced apart from the first transmission antenna unit in the first direction and including a first reception radiator, and a second reception antenna unit including a second reception radiator spaced apart the first reception radiator in the second direction.
    Type: Application
    Filed: February 21, 2024
    Publication date: August 22, 2024
    Inventors: KI HUN SUNG, SUNG JOON HONG, DAE KYU KIM, HEE JUN PARK, MEE AE HUR
  • Publication number: 20240268017
    Abstract: A circuit board includes a core layer, a first via structure penetrating the core layer, a circuit wiring disposed on one surface of the core layer and including a head portion in contact with the first via structure, a connection portion extending from the head portion and an extension portion electrically connected to the head portion through the connection portion, and a first ground pattern disposed on the one surface of the core layer and disposed around the circuit wiring to be spaced apart from the circuit wiring. A shortest distance between the extension portion and the first ground pattern is greater than a shortest distance between the head portion and the first ground pattern.
    Type: Application
    Filed: January 9, 2024
    Publication date: August 8, 2024
    Inventors: KI HUN SUNG, DAE KYU KIM, HEE JUN PARK, SUNG JOON HONG
  • Publication number: 20240258615
    Abstract: A rechargeable battery includes an electrode assembly; a can accommodating the electrode assembly and an electrolyte solution therein, the can including a body part having an opening, a bottom part connected to the body part, and a beading part on the body part in a region between the opening and the electrode assembly; a cap assembly that closes and seals the opening of the can and is connected to the can; and a super-hydrophobic coating film on the beading part, the super-hydrophobic coating film exhibiting super-hydrophobicity by exposing a plurality of nano materials at a surface thereof.
    Type: Application
    Filed: August 23, 2023
    Publication date: August 1, 2024
    Inventor: Dae Kyu KIM
  • Publication number: 20240243423
    Abstract: A cylindrical secondary battery includes an electrode assembly, a can having a cylindrical shape accommodating the electrode assembly, and a cap assembly coupled to the can, electrically connected to the electrode assembly, and insulated from the can. The cap assembly includes a cap-up exposed to the outside, a cap-down supporting the cap-up, and an insulator made of an insulating material between the cap-up and the cap-down. The cap-up includes piercing holes and bridges between the piercing holes. The bridges have different angles or widths between both ends. A compressive strength of the cap-up can be adjusted by controlling an angle, width, and number of main bridges and sub-bridges of the cap-up. The piercing holes and the sub-bridges enable gas to be discharged from the secondary battery.
    Type: Application
    Filed: October 12, 2023
    Publication date: July 18, 2024
    Inventor: Dae Kyu KIM