Patents by Inventor Do-Gyun Kim

Do-Gyun 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: 11063318
    Abstract: A cylindrical battery cell includes a jelly-roll type electrode assembly, configured to have a structure in which a positive electrode and a negative electrode are wound in a state in which a separator is disposed between the positive electrode and the negative electrode; a cylindrical battery case having no beading part; a cap assembly located at the open upper end of the cylindrical battery case, the cap assembly including a safety vent configured to rupture in order to exhaust gas when pressure in the battery case increases; a gasket mounted so as to surround the outer circumference of the safety vent in order to maintain insulation between the cap assembly and the cylindrical battery case; and a washer for fixing the cap assembly to the cylindrical battery case, the washer coupled to an upper surface of an outer circumferential portion of the open upper end of the cylindrical battery case.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: July 13, 2021
    Inventors: Hang Soo Shin, Do Gyun Kim, Sang Sok Jung, Byoung Kook Lee, Byoung Gu Lee, Geon Woo Min, Chan Bae Kim
  • Publication number: 20210151838
    Abstract: A rust inhibitor for a gasket, a gasket for a secondary battery including the same, and a secondary battery are provided. The rust inhibitor includes an anti-rust material and a polymer resin, wherein the polymer resin includes at least one of polyethylene or a copolymer which includes 2 or more derived units selected from the group consisting of an ethylene-derived unit, a propylene-derived unit, a butylene terephthalate-derived unit, an ethylene terephthalate-derived unit, and a methyl acrylate-derived unit.
    Type: Application
    Filed: February 25, 2019
    Publication date: May 20, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Byoung Gu Lee, Do Gyun Kim, Sang Suk Jung, Hang Soo Shin, Chan Bae Kim
  • Publication number: 20210091434
    Abstract: A gasket for a secondary battery including a base resin and a rust inhibitor, wherein the base resin includes polybutylene terephthalate and the rust inhibitor includes an anti-rust material and a polymer resin, and the base resin and the polymer resin are different.
    Type: Application
    Filed: February 25, 2019
    Publication date: March 25, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Byoung Gu Lee, Do Gyun Kim, Sang Suk Jung, Hang Soo Shin, Chan Bae Kim
  • Publication number: 20210083236
    Abstract: A cylindrical secondary battery may have an insulation layer formed in a region in which the top cap and the first gasket are coupled to each other. The insulation layer may include a ceramic material and a binder. The secondary battery is designed so that, when an external electrical conductive object is electrically connected directly to a positive electrode and a negative electrode of the secondary battery, an electrode tab of the secondary battery is broken as quickly as possible.
    Type: Application
    Filed: March 7, 2019
    Publication date: March 18, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Do Gyun Kim, Sang Suk Jung, Byoung Kook Lee, Byoung Gu Lee, Chan Bae Kim
  • Publication number: 20210083333
    Abstract: The present invention relates to a washer for a secondary battery including a film layer and an adhesive layer disposed on at least one surface of the film layer, wherein the adhesive layer includes an adhesive component and an indicator component, and the indicator component is fat-soluble, a secondary battery including the same, and a method for manufacturing the washer.
    Type: Application
    Filed: December 21, 2018
    Publication date: March 18, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Byoung Gu LEE, Do Gyun KIM, Je Jun LEE, Sang Suk JUNG, Hang Soo SHIN
  • Patent number: 10938008
    Abstract: The present disclosure relates to a battery cell tray, which is a tray configured to accommodate a plurality of cylinder type battery cells in a storage of a first packaging member, including a first tray member having a plate type structure in which a plurality of first recessed portions surrounding one side end portions of the battery cells are formed; and a second tray member having a plate type structure in which a plurality of second recessed portions surrounding the other side end portions facing the one side end portions of the battery cells are formed, and the first and second tray members includes a volatile rust inhibitor which is vaporized at room temperature to form a rust-proofing film on surfaces of the battery cells.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: March 2, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Je Jun Lee, Do Gyun Kim, Kwang Su Hwangbo, Sang Sok Jung
  • Patent number: 10868478
    Abstract: A wearable energy generating apparatus includes a flexible substrate, and a flexible electrode part having a first electrode attached to one surface of the flexible substrate, and coated with a negatively charged material, and a second electrode attached to one surface of the flexible substrate, and spaced apart from the first electrode by a predetermined interval. The negatively charged material coated on a surface of the first electrode may directly contact a human body that is a positively charged object, and the second electrode may directly contact the skin of the human body.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: December 15, 2020
    Assignee: Industry-Academic Cooperation Foundation, Chosun University
    Inventors: Youn Tae Kim, Chang Jun Lee, A Young Choi, Do Gyun Kim, Ji Won Park
  • Patent number: 10847765
    Abstract: The present disclosure discloses a cell module assembly receiving structure including: a cell module assembly comprising a plurality of cells; and a receiving device having an inner space capable of receiving the cell module assembly, wherein the receiving device includes a first partition wall disposed to extend from a first wall in a direction toward a second wall facing the first wall and a second partition wall disposed to extend from the second wall in a direction toward the first wall, wherein a sum of an extension length of the first partition wall and an extension length of the second partition wall is greater than or equal to a distance between the first wall and the second wall.
    Type: Grant
    Filed: February 13, 2017
    Date of Patent: November 24, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Jeong-Man Son, Kwang-Il Kim, Do-Gyun Kim, Tae-Wook Kim, Jun-Hee Lee
  • Patent number: 10790486
    Abstract: Provided are a secondary battery that is capable of preventing a can member from corroding and a method for manufacturing the same. The secondary battery includes a can member defining an outer appearance of the secondary battery, a top cap assembly an opening of the can member, a gasket insulating the can member and the top cap assembly from each other, and a fracture part disposed on an inner circumference of the opening. The fracture part is blocked from the outside by the gasket.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: September 29, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Do Gyun Kim, Je Jun Lee, Kwang Su Hwangbo, Sang Suk Jung, Hang Soo Shin, Gil Young Lee
  • Publication number: 20200295318
    Abstract: The present invention relates to a secondary battery, in which a sealing property is improved, and a method for manufacturing the same. The secondary battery includes: a can member having an opening; a top cap assembly sealing the opening; a gasket insulating the opening from the top cap assembly; and a hot melt applied to a surface of the gasket, wherein the hot melt has fluidity and viscosity at a predetermined temperature or more and is hardened at a temperature less than the predetermined temperature.
    Type: Application
    Filed: March 23, 2018
    Publication date: September 17, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Do Gyun Kim, Sang Suk Jung, Byoung Kook Lee, Hang Soo Shin, Geon Woo Min, Byoung Gu Lee, Chan Bae Kim
  • Patent number: 10718516
    Abstract: A variable orifice for a pulverized coal pipe of a pulverizer includes a pipe body connected to and installed on a pipeline of the pulverized coal pipe for supplying a pulverized coal from the pulverizer to a boiler and including a diameter expansion portion having a diameter expanded more than a diameter of the pulverized coal pipe; an opening and closing portion installed inside the diameter expansion portion of the pipe body; a rotation actuating portion configured to rotate the inner opening and closing plate and the outer opening and closing plate in mutually different directions; and an opening and closing plate protection member coupled to an inner circumferential surface of each of the inner opening and closing plate and the outer opening and closing plate.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: July 21, 2020
    Inventor: Do Gyun Kim
  • Publication number: 20200185666
    Abstract: To solve the above problem, a top insulator for a case of a secondary battery, according to an embodiment of the present invention includes: a glass fiber including crossed weft yarns and warp yarns of raw yarns of the glass fiber; and silicone rubber on at least one surface of the glass fiber.
    Type: Application
    Filed: January 3, 2019
    Publication date: June 11, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Byoung Gu LEE, Do Gyun KIM, Sang Suk JUNG, Hang Soo SHIN
  • Patent number: 10680536
    Abstract: A fibrous energy harvesting device having a corrugated structure includes a first fiber layer acting as an electrified body for generation of triboelectric energy, and a second fiber layer acting as an electrified body for generation of triboelectric energy. The first fiber layer is attached to an upper surface of the second fiber layer and has a corrugated structure.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: June 9, 2020
    Assignee: Industry-Academic Cooperation Foundation, Chosun University
    Inventors: Youn Tae Kim, A Young Choi, Chang Jun Lee, Ji Won Park, Do Gyun Kim
  • Publication number: 20200144563
    Abstract: To solve the above problem, a method for manufacturing a top insulator configured to be inserted into a case of a secondary battery, according to an embodiment of the present invention includes: preparing a top insulator fabric by applying a silicone rubber to at least one surface of a glass fiber fabric formed by crossing weft yarns and warp yarns of glass fiber raw yams; and punching the top insulator fabric.
    Type: Application
    Filed: January 3, 2019
    Publication date: May 7, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Byoung Gu LEE, Do Gyun KIM, Sang Suk JUNG, Hang Soo SHIN
  • Publication number: 20200116357
    Abstract: A variable orifice for a pulverized coal pipe of a pulverizer includes a pipe body connected to and installed on a pipeline of the pulverized coal pipe for supplying a pulverized coal from the pulverizer to a boiler and including a diameter expansion portion having a diameter expanded more than a diameter of the pulverized coal pipe; an opening and closing portion installed inside the diameter expansion portion of the pipe body; a rotation actuating portion configured to rotate the inner opening and closing plate and the outer opening and closing plate in mutually different directions; and an opening and closing plate protection member coupled to an inner circumferential surface of each of the inner opening and closing plate and the outer opening and closing plate.
    Type: Application
    Filed: October 12, 2018
    Publication date: April 16, 2020
    Inventor: Do Gyun KIM
  • Patent number: 10615381
    Abstract: The present invention relates to a cap assembly for a secondary battery mounted on an opening of a can. The cap assembly comprises: a top cap; a safety element disposed on a lower portion of the top cap; a safety vent disposed on a lower portion of the safety element; and a gasket surrounding edges of the top cap, the safety element, and the safety vent and mounted on the opening of the can, wherein an impact absorption part absorbing an impact from the gasket is disposed between an inner wall of the gasket and an outer circumferential surface of the safety vent.
    Type: Grant
    Filed: June 27, 2016
    Date of Patent: April 7, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Byoung Kook Lee, Hang Soo Shin, Do Gyun Kim, Je Jun Lee, Jun Tak Kim, Byoung Gu Lee, Sang Suk Jung
  • Publication number: 20200106060
    Abstract: A secondary battery may include: an electrode assembly in which a positive electrode, a negative electrode, and a separator are wound or stacked; an insulator on at least one of an upper portion and a lower portion of the electrode assembly; and a battery case configured to accommodate the electrode assembly, the insulator, and an electrolyte and sealed by a cap assembly, wherein the insulator includes: a peripheral portion having a disk ring shape and made of a rigid material; and a central portion extending inward from an inner circumferential surface of the peripheral portion and including a textile fabric having high-temperature resistance.
    Type: Application
    Filed: October 17, 2018
    Publication date: April 2, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Hang Soo SHIN, Do Gyun KIM, Sang Suk JUNG, Byoung Gu LEE, Chan Bae KIM
  • Publication number: 20200091482
    Abstract: The disclosed secondary battery is capable of preventing a short-circuit pressure at which the safety vent is ruptured from being reduced due to deformation of the safety vent during assembly of the battery. The secondary battery of the present invention includes a can member accommodating an electrode assembly and a top cap assembly covering an opening of the can member. A safety vent is provided in the top cap assembly to discharge a gas when an inner pressure of the can member increases, wherein the safety vent includes a main body and a bending unit, in which an outer edge of the main body is bent, and wherein a buffering space is defined between the bending unit and the main body.
    Type: Application
    Filed: November 7, 2018
    Publication date: March 19, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Geon Woo Min, Hang Soo Shin, Do Gyun Kim, Sang Suk Jung, Chan Bae Kim
  • Patent number: 10535859
    Abstract: Disclosed herein is a pouch-shaped secondary battery including a micro-perforated electrode lead having adhesive properties that is capable of enabling a short circuit to occur in the pouch-shaped secondary battery using the adhesive properties of the micro-perforated electrode lead with respect to a pouch-shaped battery case in order to secure the safety of the pouch-shaped secondary battery when the pouch-shaped secondary battery swells due to gas generated in the pouch-shaped secondary battery while the pouch-shaped secondary battery is in an abnormal state or when the pouch-shaped secondary battery is overcharged. Current is prevented from flowing in the pouch-shaped secondary battery when the pouch-shaped secondary battery is overcharged or when the pouch-shaped secondary battery is in an abnormal state.
    Type: Grant
    Filed: April 9, 2018
    Date of Patent: January 14, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Do Gyun Kim, Sang Sok Jung, Byoung Kook Lee, Byoung Gu Lee, Hang Soo Shin, Geon Woo Min, Chan Bae Kim
  • Publication number: 20200013998
    Abstract: Disclosed herein are an insulation member, a method of manufacturing the insulation member, and a method of manufacturing a cylindrical battery including the insulation member, and more particularly an insulation member including an insulation plate substrate configured as a reticular structure formed by glass fiber strands and a binder applied to the insulation plate substrate, a method of manufacturing the insulation member, and a method of manufacturing a cylindrical battery including the insulation member.
    Type: Application
    Filed: April 24, 2018
    Publication date: January 9, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Hang Soo Shin, Do Gyun Kim, Sang Sok Jung, Byoung Kook Lee, Byoung Gu Lee, Chan Bae Kim