Patents by Inventor Gil Young LEE

Gil Young 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).

  • Publication number: 20200335736
    Abstract: A method of manufacturing a cylindrical battery case includes performing an ironing process, which is one of the processes of manufacturing the battery case, a plurality of times in order to decrease the surface roughness of the battery case, thereby improving the corrosion characteristics of the battery case. The surface roughness of the cylindrical battery case is decreased by performing a thickness reducing process when a process for forming the outer circumferential surface of a body of the cylindrical battery case is performed at the time of manufacturing the cylindrical battery case. In addition, corrosion characteristics are improved for respective values of the surface roughness.
    Type: Application
    Filed: October 23, 2018
    Publication date: October 22, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Kwang Su Hwang Bo, Je Jun Lee, Sang Sok Jung, Jun Tak Kim, Gil Young Lee, Seong Mo Koo
  • 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: 20200075919
    Abstract: A battery connector including a conductive plate configured to contact a first battery and a second battery so as to electrically connect the first battery and the second battery to each other, an upper fixer configured to be coupled the first battery, and a lower fixer configured to be coupled to the second battery.
    Type: Application
    Filed: November 6, 2019
    Publication date: March 5, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Ro Un KIM, Sang Uck KIM, Gil Young LEE, Sang Sok JUNG
  • Publication number: 20200035962
    Abstract: Disclosed is a cylindrical battery cell configured such that the outer surface of a cylindrical case excluding electrode terminals is wrapped by a heat-shrinkable tube, wherein the heat-shrinkable tube includes a tube substrate made of a polyester-based resin, the tube substrate being heat-shrinkable; a reinforcement agent, made of a nylon-based resin, for increasing the tensile stress and operating temperature of the heat-shrinkable tube; and an ultraviolet (UV) absorber for absorbing ultraviolet rays radiated to the heat-shrinkable tube and emitting the absorbed ultraviolet rays as thermal energy to prevent the scission of polymer chains of the nylon-based resin or the polyester-based resin as the result of reaction with oxygen.
    Type: Application
    Filed: December 26, 2017
    Publication date: January 30, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Jun-Tak Kim, Je-Jun Lee, Kwang-Su Hwang Bo, Sang-Sok Jung, Gil-Young Lee
  • Publication number: 20190280252
    Abstract: Disclosed is a cylindrical battery cell in which a heat-shrinkable tube wraps an outer surface of a cylindrical case of the cylindrical battery cell except electrode terminals, the heat-shrinkable tube including: a base material, which is a polyester resin, capable of shrinking by heat; a supplement, which is a nylon resin, capable of increasing a tensile strength and operating temperature of the heat-shrinkable tube; and an ultraviolet stabilizer capable of inhibiting a chain reaction of free radicals generated by cleavage of polymer chains of the nylon resin or the polyester resin, when the heat-shrinkable tube is exposed to an ultraviolet ray irradiation.
    Type: Application
    Filed: December 26, 2017
    Publication date: September 12, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Jun-Tak Kim, Je-Jun Lee, Kwang-Su Hwang Bo, Sang-Sok Jung, Gil-Young Lee
  • Publication number: 20180309096
    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: Application
    Filed: April 10, 2018
    Publication date: October 25, 2018
    Applicant: LG CHEM, LTD.
    Inventors: Do Gyun KIM, Je Jun LEE, Kwang Su HWANGBO, Sang Suk JUNG, Hang Soo SHIN, Gil Young LEE
  • Publication number: 20180287105
    Abstract: Disclosed is a secondary battery. According to the present invention, a charging/discharging pin is prevented from being separated from a top cap while the secondary is charged and discharged to improve safety during the charging/discharging of the secondary battery. According to an aspect of the present invention, the secondary battery includes a can accommodating an electrode assembly, a top cap provided on an upper portion of the can, and a groove defined in a surface of the top cap and having a shape that is recessed downward. When the top cap is viewed from an upper side, the groove has a closed curve shape.
    Type: Application
    Filed: April 2, 2018
    Publication date: October 4, 2018
    Applicant: LG CHEM, LTD.
    Inventors: Gil Young LEE, Do Gyun KIM, Sang Suk JUNG