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).

  • 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
  • Patent number: 10084162
    Abstract: A pouch case of the present disclosure includes an inner resin layer, a metallic layer, and an outer resin layer, wherein the resin layer(s) include(s) a foaming activator containing an isocyanate-based compound and a polyol compound. Accordingly, since the pouch case includes the inner resin layer and/or the outer resin layer including the foaming activator, when moisture or the like is permeated thereto due to an external factor, a protective layer including urethane-based foam is formed in the outer resin layer or between the inner resin 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.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: September 25, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Soo Ji Hwang, Sang Hun Kim, Won Pill Hwang, Sang Sok Jung, Hyung Kyun Yu
  • 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: 20180159100
    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: Application
    Filed: June 7, 2016
    Publication date: June 7, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Byoung-Kook Lee, Je-Jun Lee, Do-Gyun Kim, Sang-Sok Jung
  • Patent number: 9947957
    Abstract: Disclosed is a secondary battery having a structure in which a jelly-roll having a cathode/separator/anode structure is mounted in a cylindrical battery case, wherein a plate-shaped insulating member is mounted on the top of the jelly-roll and the insulating member includes a perforated inlet enabling gas discharge and penetration of electrode terminals and a plurality of pores with a diameter of 100 ?m or less provided over the entire surface of the insulating member.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: April 17, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Do Gyun Kim, Dong-Myung Kim, Dong Sub Lee, Sang Bong Nam, Sang Sok 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
  • Publication number: 20160359201
    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: Application
    Filed: November 4, 2015
    Publication date: December 8, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Jin Uk DO, Ju Bin KIM, Sang Sok JUNG
  • Publication number: 20160248071
    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: Application
    Filed: July 16, 2014
    Publication date: August 25, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Wook Hee JANG, Yong Ro LEE, Hyung Seok HAN, Hyang Mok LEE, Sang Sok JUNG
  • Publication number: 20160133883
    Abstract: A pouch case of the present disclosure includes an inner resin layer, a metallic layer, and an outer resin layer, wherein the resin layer(s) include(s) a foaming activator containing an isocyanate-based compound and a polyol compound. Accordingly, since the pouch case includes the inner resin layer and/or the outer resin layer including the foaming activator, when moisture or the like is permeated thereto due to an external factor, a protective layer including urethane-based foam is formed in the outer resin layer or between the inner resin 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.
    Type: Application
    Filed: October 27, 2015
    Publication date: May 12, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Soo Ji HWANG, Sang Hun KIM, Won Pill HWANG, Sang Sok JUNG, Hyung Kyun YU
  • Publication number: 20160133884
    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, and stability of a pouch type secondary battery may thus be ensured.
    Type: Application
    Filed: October 27, 2015
    Publication date: May 12, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Soo Ji HWANG, Sang Hun KIM, Won Pill HWANG, Sang Sok JUNG, Hyung Kyun YU
  • Patent number: 9318732
    Abstract: A lithium rechargeable battery in which an anti-rotation groove is integrally formed with a lower recess of a safety vent at a lower surface of a cap plate, and an insulating plate and a terminal plate rest in the anti-rotation groove so that the terminal plate is prevented from rotating when a cap assembly is assembled is provided. In addition, instead of the anti-rotation groove, a resting recess is formed on a lower surface of the cap plate, and the insulating plate and the terminal plate rest in the resting recess, so that the terminal plate is prevented from rotating when the cap assembly is assembled.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: April 19, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Sung Jae Cho, Sang sok Jung, Shin Gun Kang
  • Publication number: 20160099443
    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: Application
    Filed: May 6, 2015
    Publication date: April 7, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Je Jun LEE, Sang Sok JUNG, Hang Soo SHIN
  • Publication number: 20160099439
    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: Application
    Filed: September 15, 2015
    Publication date: April 7, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Je Jun LEE, Hang Soo SHIN, Sang Sok JUNG
  • Patent number: 9299967
    Abstract: Disclosed is a secondary battery having a structure in which a jelly-roll having a cathode/separator/anode structure is mounted in a cylindrical battery case, wherein a plate-shaped insulator mounted on top of the jelly-roll includes a perforated inlet enabling gas discharge and penetration of electrode terminals, a plurality of fine pores having a size that allows permeation of an electrolyte solution, but does not allow permeation of foreign materials, and a plurality of strip or bead shaped protrusions disposed in transverse and/or longitudinal directions on one or both surfaces of the insulator.
    Type: Grant
    Filed: June 4, 2012
    Date of Patent: March 29, 2016
    Assignee: LG Chem, Ltd.
    Inventors: Do Gyun Kim, Dong-Myung Kim, Sang Bong Nam, Dong Sub Lee, Jun Ho Moon, Sang Sok Jung
  • Patent number: 9276286
    Abstract: Disclosed is a secondary battery having a structure in which a jelly-roll having a cathode/separator/anode structure is mounted in a cylindrical battery case, wherein a plate-shaped insulator mounted on the top of the jelly-roll includes a molded article made of a polymer resin or a polymer composite and a plurality of fine pores is perforated through the molded article.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: March 1, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Do Gyun Kim, Dong-Myung Kim, Dong Sub Lee, Sang Bong Nam, Sang Sok Jung
  • Patent number: 9252454
    Abstract: Disclosed is a secondary battery having a structure in which a jelly-roll having a cathode/separator/anode structure is mounted in a cylindrical battery case, wherein a plate-shaped insulator mounted on the top of the jelly-roll includes a woven fabric or a knit fabric made of fibers.
    Type: Grant
    Filed: February 4, 2014
    Date of Patent: February 2, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Do Gyun Kim, Dong-Myung Kim, Dong Sub Lee, Sang Bong Nam, Sang Sok Jung
  • Patent number: 9236630
    Abstract: Disclosed is a secondary battery having a structure in which a jelly-roll having a cathode/separator/anode structure is mounted in a cylindrical battery case and a plate-shaped insulator is mounted on top of the jelly-roll, wherein the insulator has a porous structure in which a plurality of fine pores communicate in a longitudinal direction, or in traverse and longitudinal directions.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: January 12, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Do Gyun Kim, Dong-Myung Kim, Dong Sub Lee, Sang Bong Nam, Sang Sok Jung
  • Publication number: 20150093630
    Abstract: Provided are extruding a raw material into a prismatic hollow material having both open ends (Step (a)), drawing the hollow material a plurality of times so as to have a desired thickness (Step (b)), manufacturing a main body by cutting the drawn hollow material to a predetermined length (Step (c)), forming a sealing cover having a shape corresponding to an open end of the main body (Step (d)), and adhering the sealing cover to the open end of the main body (Step (e)).
    Type: Application
    Filed: July 16, 2014
    Publication date: April 2, 2015
    Inventors: Hyung Seok HAN, Sang Bong NAM, Hyang Mok LEE, Wook Hee JANG, Sang Sok JUNG
  • Patent number: 8968898
    Abstract: Disclosed herein is a cap assembly disposed at an open upper end of a cylindrical container of a battery in which an electrode assembly (jelly roll) of a cathode/separator/anode structure is mounted in the cylindrical container, wherein an electrode lead of the jelly roll is electrically connected to the lower end of a safety vent having notches, which are ruptured to discharge high pressure gas when high pressure is generated in the battery, and a safety element to interrupt current at a predetermined temperature is provided between the safety vent and the electrode lead.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: March 3, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Dong Sub Lee, Dong-Myung Kim, Jae Dong Chang, Jun Ho Moon, Sang Sok Jung
  • Publication number: 20140220394
    Abstract: Disclosed is a secondary battery having a structure in which a jelly-roll having a cathode/separator/anode structure is mounted in a cylindrical battery case, wherein a plate-shaped insulator mounted on the top of the jelly-roll includes a perforated inlet enabling gas discharge and penetration of electrode terminals, and a plurality of fine pores that allow permeation of an electrolyte solution, but do not allow permeation of foreign materials having a size of 100 ?m or higher.
    Type: Application
    Filed: June 7, 2012
    Publication date: August 7, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Do Gyun Kim, Dong-Myung Kim, Sang Bong Nam, Dong Sub Lee, Jun Ho Moon, Sang Sok Jung