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).
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Publication number: 20190280252Abstract: 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: ApplicationFiled: December 26, 2017Publication date: September 12, 2019Applicant: LG Chem, Ltd.Inventors: Jun-Tak Kim, Je-Jun Lee, Kwang-Su Hwang Bo, Sang-Sok Jung, Gil-Young Lee
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Patent number: 10347897Abstract: 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: GrantFiled: July 16, 2014Date of Patent: July 9, 2019Assignee: LG CHEM, LTD.Inventors: Wook Hee Jang, Yong Ro Lee, Hyung Seok Han, Hyang Mok Lee, Sang Sok Jung
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Patent number: 10153465Abstract: 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: GrantFiled: May 6, 2015Date of Patent: December 11, 2018Assignee: LG CHEM, LTD.Inventors: Je Jun Lee, Sang Sok Jung, Hang Soo Shin
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Patent number: 10141549Abstract: 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: GrantFiled: October 27, 2015Date of Patent: November 27, 2018Assignee: LG CHEM, LTD.Inventors: Soo Ji Hwang, Sang Hun Kim, Won Pill Hwang, Sang Sok Jung, Hyung Kyun Yu
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Patent number: 10115935Abstract: 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: GrantFiled: September 15, 2015Date of Patent: October 30, 2018Assignee: LG CHEM, LTD.Inventors: Je Jun Lee, Hang Soo Shin, Sang Sok Jung
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Publication number: 20180309112Abstract: 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: ApplicationFiled: April 9, 2018Publication date: October 25, 2018Applicant: 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
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Patent number: 10084162Abstract: 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: GrantFiled: October 27, 2015Date of Patent: September 25, 2018Assignee: LG CHEM, LTD.Inventors: Soo Ji Hwang, Sang Hun Kim, Won Pill Hwang, Sang Sok Jung, Hyung Kyun Yu
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Publication number: 20180233713Abstract: 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: ApplicationFiled: February 13, 2018Publication date: August 16, 2018Applicant: LG CHEM, LTD.Inventors: Byoung Gu LEE, Do Gyun KIM, Jun Tak KIM, Hang Soo SHIN, Byoung Kook LEE, Sang Sok JUNG
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Publication number: 20180159100Abstract: 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: ApplicationFiled: June 7, 2016Publication date: June 7, 2018Applicant: LG Chem, Ltd.Inventors: Byoung-Kook Lee, Je-Jun Lee, Do-Gyun Kim, Sang-Sok Jung
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Patent number: 9947957Abstract: 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: GrantFiled: May 31, 2013Date of Patent: April 17, 2018Assignee: LG Chem, Ltd.Inventors: Do Gyun Kim, Dong-Myung Kim, Dong Sub Lee, Sang Bong Nam, Sang Sok Jung
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Publication number: 20180053974Abstract: 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: ApplicationFiled: April 15, 2016Publication date: February 22, 2018Applicant: LG CHEM, LTD.Inventors: Je-Jun LEE, Hang-Soo SHIN, Do-Gyun KIM, Byoung-Gu LEE, Sang-Sok JUNG
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Publication number: 20160359201Abstract: 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: ApplicationFiled: November 4, 2015Publication date: December 8, 2016Applicant: LG CHEM, LTD.Inventors: Jin Uk DO, Ju Bin KIM, Sang Sok JUNG
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Publication number: 20160248071Abstract: 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: ApplicationFiled: July 16, 2014Publication date: August 25, 2016Applicant: LG CHEM, LTD.Inventors: Wook Hee JANG, Yong Ro LEE, Hyung Seok HAN, Hyang Mok LEE, Sang Sok JUNG
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Publication number: 20160133884Abstract: 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: ApplicationFiled: October 27, 2015Publication date: May 12, 2016Applicant: LG CHEM, LTD.Inventors: Soo Ji HWANG, Sang Hun KIM, Won Pill HWANG, Sang Sok JUNG, Hyung Kyun YU
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Publication number: 20160133883Abstract: 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: ApplicationFiled: October 27, 2015Publication date: May 12, 2016Applicant: LG CHEM, LTD.Inventors: Soo Ji HWANG, Sang Hun KIM, Won Pill HWANG, Sang Sok JUNG, Hyung Kyun YU
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Patent number: 9318732Abstract: 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: GrantFiled: June 11, 2012Date of Patent: April 19, 2016Assignee: Samsung SDI Co., Ltd.Inventors: Sung Jae Cho, Sang sok Jung, Shin Gun Kang
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Publication number: 20160099443Abstract: 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: ApplicationFiled: May 6, 2015Publication date: April 7, 2016Applicant: LG CHEM, LTD.Inventors: Je Jun LEE, Sang Sok JUNG, Hang Soo SHIN
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Publication number: 20160099439Abstract: 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: ApplicationFiled: September 15, 2015Publication date: April 7, 2016Applicant: LG CHEM, LTD.Inventors: Je Jun LEE, Hang Soo SHIN, Sang Sok JUNG
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Patent number: 9299967Abstract: 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: GrantFiled: June 4, 2012Date of Patent: March 29, 2016Assignee: LG Chem, Ltd.Inventors: Do Gyun Kim, Dong-Myung Kim, Sang Bong Nam, Dong Sub Lee, Jun Ho Moon, Sang Sok Jung
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Patent number: 9276286Abstract: 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: GrantFiled: February 11, 2014Date of Patent: March 1, 2016Assignee: LG CHEM, LTD.Inventors: Do Gyun Kim, Dong-Myung Kim, Dong Sub Lee, Sang Bong Nam, Sang Sok Jung