Patents by Inventor Sang-Sok Jung

Sang-Sok Jung 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: 20210126311
    Abstract: A battery cell having an electrode main body, in which a positive electrode and a negative electrode, each having an electrode mixture is coated on at least one surface of a metallic current collector, and a separation film interposed between the positive electrode and the negative electrode are wound together, a metal can, which accommodates the electrode main body together with an electrolyte solution; and a sealing tape attached to an exterior surface of the electrode main body so as to fix a distal end portion of the electrode main body, the sealing tape including a heat conductive material to provide heat conduction between the electrode main body and the metal can is provided.
    Type: Application
    Filed: October 10, 2018
    Publication date: April 29, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Wook Hee JANG, Sang Sok JUNG, Sangjoon PARK, Roun KIM, Gilyoung LEE
  • 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
  • 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: 10693195
    Abstract: Provided is a rechargeable battery. The rechargeable battery includes an electrode assembly, an electrolyte immersing the electrode assembly therein, a case assembly accommodating the electrode assembly and the electrolyte, and an absorbing member disposed in the electrode assembly to absorb stress applied to the inside of the electrode assembly when the electrode assembly is expanded.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: June 23, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Jin Uk Do, Ju Bin Kim, Sang Sok Jung
  • 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
  • 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
  • Patent number: 10490792
    Abstract: The present disclosure relates to a cap assembly for a secondary battery and a secondary battery including the same. Specifically, a CID filter is fixed in the cap assembly such that, even when a gas is discharged due to the rupture of a safety vent, the CID short-circuit pressure is not affected.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: November 26, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Byoung-Kook Lee, Je-Jun Lee, Do-Gyun Kim, Sang-Sok Jung
  • Publication number: 20190291207
    Abstract: A pressurizing mask for supporting a combination of a top cap assembly and an electrode assembly has a welding portion and an indent portion into which an electrode tab is inserted.
    Type: Application
    Filed: August 13, 2018
    Publication date: September 26, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Minki JO, Je Jun LEE, Sang Sok JUNG, Jin Uk DO
  • Publication number: 20190280268
    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: Application
    Filed: January 12, 2018
    Publication date: September 12, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Je Jun LEE, Do Gyun KIM, Kwang Su HWANGBO, Sang Sok JUNG
  • 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
  • Patent number: 10347897
    Abstract: Disclosed herein is a secondary battery configured to have a structure in which an electrode assembly of a cathode/separator/anode structure is mounted in a battery case in a state in which the electrode assembly is impregnated with an electrolyte, wherein electrode tabs are attached to active material uncoated portions of electrode plates of the electrode assembly and an anode tab, which is one of the electrode tabs and one end of which is attached to a battery case, is made of a Cu—Ni alloy.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: July 9, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Wook Hee Jang, Yong Ro Lee, Hyung Seok Han, Hyang Mok Lee, Sang Sok Jung
  • Patent number: 10153465
    Abstract: Provided is a top cap assembly for a cylindrical type secondary battery, including a CID short-circuiting member, which interrupts an electric current when a high voltage is generated in the cylindrical type secondary battery, a safety vent connected to an upper part of the CID short-circuiting member and including a plurality of notches, which are broken when a voltage equal to or greater than an allowable voltage of the CID short-circuiting member is generated, to discharge gas from the cylindrical type secondary battery, a top cap connected to the safety vent and disposed on the uppermost end of an upper opening part of the cylindrical type secondary battery, a gasket surrounding and sealing an outer circumferential surface of the CID short-circuiting member, and a heat resistant member preventing heat transfer between the gasket and the safety vent.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: December 11, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Je Jun Lee, Sang Sok Jung, Hang Soo Shin
  • Patent number: 10141549
    Abstract: A pouch case of the present disclosure includes an inner layer, a metallic layer, and an outer layer, wherein the inner layer includes a foaming activator containing an isocyanate-based compound which generates a gas by a foaming agent. Accordingly, since the pouch case includes the inner layer including the foaming activator, when moisture or the like is permeated thereto due to an external factor, a protective gas layer is formed between the inner layer and an electrode assembly in a short time, so that the pouch case and the electrode assembly may be protected, moisture which is permeable into the electrode assembly may be blocked, and separator cracking also may be prevented. Accordingly, explosion which may be caused by moisture permeation, separator cracking, or a short circuit by contact between the pouch case and the electrode assembly, or the like, may be prevented.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: November 27, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Soo Ji Hwang, Sang Hun Kim, Won Pill Hwang, Sang Sok Jung, Hyung Kyun Yu
  • Patent number: 10115935
    Abstract: Provided is a corrosion resistant tube for a secondary battery including a volatile corrosion inhibitor (VCI) and a base resin, and a secondary battery including the same. The corrosion resistant tube of the present invention prevents the occurrence of rust or the occurrence of corrosion in a battery cell, and therefore, is capable of enhancing stability of the battery.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: October 30, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Je Jun Lee, Hang Soo Shin, Sang Sok Jung