Patents by Inventor Byoung-Gu LEE

Byoung-Gu 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).

  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • Publication number: 20190386272
    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: Application
    Filed: September 13, 2018
    Publication date: December 19, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Hang Soo Shin, Do Gyun Kim, Sang Sok Jung, Byoung Kook Lee, Byoung Gu Lee, Geon Woo Min, Chan Bae Kim
  • Publication number: 20190386270
    Abstract: Disclosed herein is a cylindrical battery using an anti-corrosive gasket including a volatile corrosion inhibitor and a base resin. Consequently, the cylindrical battery achieves remarkable anti-corrosion effects under high-temperature and high-humidity conditions. This effect cannot be achieved by various conventional anti-corrosion technologies, such as those of a conventional anti-corrosive washer and a conventional anti-corrosive tube, in the field of cylindrical batteries.
    Type: Application
    Filed: May 23, 2018
    Publication date: December 19, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Byoung Gu Lee, Sang Sok Jung, Do Gyun Kim, Byoung Kook Lee, Hang Soo Shin, Chan Bae Kim
  • Patent number: 10497992
    Abstract: The present disclosure relates to a case for a secondary battery and a secondary battery having the same. More specifically, it relates to a case for a secondary battery having a washer for detecting leakage with a structure improved so as to check leakage of an electrolyte and a secondary battery having the same. A lithium ion secondary battery according to the present disclosure provides an effect of easily checking the leakage of an electrolyte with naked eyes through the color change of a washer when a trace amount of the electrolyte leaks.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: December 3, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Je-Jun Lee, Hang-Soo Shin, Do-Gyun Kim, Byoung-Gu Lee, Sang-Sok Jung
  • Publication number: 20180309112
    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: Application
    Filed: April 9, 2018
    Publication date: October 25, 2018
    Applicant: 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: 20180233713
    Abstract: A cylindrical battery cell is provided. The cylindrical battery cell configured to have a structure in which a wound type electrode assembly having a positive electrode/separator/negative electrode structure is mounted in a cylindrical can. The cylindrical battery cell includes an inorganic coating portion for accelerating dissipation of heat from the cylindrical can, the inorganic coating portion being provided on at least a part of the outer surface of the cylindrical can.
    Type: Application
    Filed: February 13, 2018
    Publication date: August 16, 2018
    Applicant: LG CHEM, LTD.
    Inventors: Byoung Gu LEE, Do Gyun KIM, Jun Tak KIM, Hang Soo SHIN, Byoung Kook LEE, Sang Sok JUNG
  • Publication number: 20180062122
    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: Application
    Filed: June 27, 2016
    Publication date: March 1, 2018
    Applicant: 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: 20180053974
    Abstract: The present disclosure relates to a case for a secondary battery and a secondary battery having the same. More specifically, it relates to a case for a secondary battery having a washer for detecting leakage with a structure improved so as to check leakage of an electrolyte and a secondary battery having the same. A lithium ion secondary battery according to the present disclosure provides an effect of easily checking the leakage of an electrolyte with naked eyes through the color change of a washer when a trace amount of the electrolyte leaks.
    Type: Application
    Filed: April 15, 2016
    Publication date: February 22, 2018
    Applicant: LG CHEM, LTD.
    Inventors: Je-Jun LEE, Hang-Soo SHIN, Do-Gyun KIM, Byoung-Gu LEE, Sang-Sok JUNG