Patents by Inventor Yong Su Choi
Yong Su Choi 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: 20200295315Abstract: To solve the above problems, a pouch for a battery according to an embodiment of the present invention includes: a cup part that accommodates an electrode assembly and is formed by laminating a surface protection layer, a gas barrier layer including a metal, and a sealant layer; and a degassing part in which a degassing aperture is punched when a degassing process is performed and in which no gas barrier layer is formed.Type: ApplicationFiled: October 19, 2018Publication date: September 17, 2020Inventors: Na Yoon Kim, Yong Su Choi, Sang Hun Kim, Hyung Kyun Yu, Soo Ji Hwang, Min Hyeong Kang, Yong Kim
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Patent number: 10777840Abstract: The present invention relates to an apparatus for sealing a secondary battery. The apparatus comprises: a sealing member thermally fusing and sealing a sealing surface of a pouch in which an electrode assembly is accommodated; and a cooling member cooling the sealing surface.Type: GrantFiled: August 26, 2016Date of Patent: September 15, 2020Assignee: LG Chem, Ltd.Inventors: Sang Hun Kim, Yong Su Choi, Sang Suk Jung, Won Pill Hwang, Cho Long Kim, Yong Kim
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Publication number: 20200287186Abstract: The present invention relates to a battery cell. The battery cell comprises: an electrode assembly provided with an electrode tab; a case which accommodates the electrode assembly and of which at least a portion of an edge is sealed to provide a sealing surface; an electrode lead coupled to the electrode tab and led out of the case; a lead film disposed on each of top and bottom surfaces of the lead electrode disposed on the sealing surface of the case and coupled together with the sealing surface; and a main gas discharge tube disposed in the case and having one end buried in the lead film.Type: ApplicationFiled: May 26, 2020Publication date: September 10, 2020Applicant: LG CHEM, LTD.Inventors: Cho Long KIM, Yong Su CHOI, Sang Hun KIM, Sang Suk JUNG, Won Pill HWANG, Yong KIM
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Patent number: 10770712Abstract: A battery cell includes an electrode assembly and a battery case. The electrode assembly includes a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. The battery case includes an upper case and a lower case, at least one of the upper case and the lower case being provided with a receiving part, in which the electrode assembly is mounted. One end of each of electrode tabs extending from electrode plates of the electrode assembly is coupled to a corresponding end of an electrode lead, which protrudes outward from the battery case. The electrode lead is provided with at least one notch part configured to rupture in response to expansion deformation of the battery case when the pressure in the battery cell increases to achieve the electrical cutoff of the battery.Type: GrantFiled: January 4, 2018Date of Patent: September 8, 2020Assignee: LG Chem, Ltd.Inventors: Sang Hun Kim, Yong Kim, Min Hyeong Kang, Cho Long Kim, Hyung Kyun Yu, Ji Hoon Lee, Yong Su Choi, Soo Ji Hwang
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Publication number: 20200259132Abstract: Provided is a packaging for a flexible secondary battery, including: a first polymer resin layer; a barrier layer formed on the first polymer resin layer for interrupting moisture and gases; a parylene layer including parylene on at least one surface of the barrier layer; and a second polymer resin layer formed on the barrier layer, wherein the parylene layer has a thickness of 0.1-2.5 ?m. A flexible secondary battery including the packaging is also provided.Type: ApplicationFiled: March 29, 2019Publication date: August 13, 2020Applicant: LG Chem, Ltd.Inventors: In-Sung Uhm, Ju-Ryoun Kim, Yong-Hee Lee, Sang-Hun Kim, Jae-Hyun Lee, Yong-Su Choi, Soo-Ji Hwang
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Publication number: 20200259146Abstract: To solve the above problem, a venting device inserted into a sealing part of a pouch of a secondary battery according to the present invention includes: a housing inserted between confronting surfaces of the sealing part and sealed together with the sealing part; an element made of a metal and disposed in the housing and through which a passage is defined providing gas communication between an inside and an outside of the pouch; and a ball disposed at an outlet-side of the passage, the ball configured to open and close the passage, wherein, in the element, an edge of an inner circumference of a surface of the outlet-side of the passage is chamfered or filleted so as to face the ball, and the element includes: a surface treatment layer formed on the chamfered or filleted surface; and a layer made of a polymer and fused to the surface treatment layer.Type: ApplicationFiled: January 23, 2019Publication date: August 13, 2020Applicant: LG Chem, Ltd.Inventors: Na Yoon Kim, Yong Su Choi, Sang Hun Kim, Hyung Kyun Yu, Soo Ji Hwang
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Patent number: 10727453Abstract: The present disclosure relates to a method for sealing a pouch casing of a pouch-type secondary battery, which includes the steps of: a receiving step in which an electrode assembly is received in an inner space formed between an upper pouch and a lower pouch; and a sealing step in which a first pressure is applied to an outer circumferential sealing portion, where the upper pouch and the lower pouch are sealed, in the longitudinal direction, and then the pressure is relieved, wherein the sealing step is carried out by applying external force to the upper pouch in the upward direction and to the lower pouch in the downward direction, or by applying a second pressure working in perpendicular to the first pressure to the sealing portion from the inner part of the pouch casing in a direction toward the outside.Type: GrantFiled: September 28, 2017Date of Patent: July 28, 2020Assignee: LG Chem, Ltd.Inventors: Yong-Su Choi, Sang-Hun Kim, Min-Hyeong Kang, Yong Kim, Cho-Long Kim, Hyung-Kyun Yu, Ji-Hoon Lee, Soo-Ji Hwang
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Publication number: 20200212399Abstract: A venting device inserted into a sealing part of a pouch of a secondary battery according to an embodiment of the present invention includes: a housing inserted between confronting surfaces of the sealing part so as to be sealed together with the sealing part, the housing being made from a metal plate; a gasket made of a polymer and disposed in the housing and through which a passage is defined providing gas communication between an inside and an outside of the pouch; and a plate spring made of a metal, the plate spring being disposed in the housing and assembled with the gasket, the plate spring being configured to open and close the passage in response to a change in an internal pressure of the pouch, wherein the housing includes a crimping part crimped together with the gasket on an upper end of the housing.Type: ApplicationFiled: January 23, 2019Publication date: July 2, 2020Applicant: LG Chem, Ltd.Inventors: Yong Su Choi, Sang Hun Kim, Na Yoon Kim, Hyung Kyun Yu
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Patent number: 10700324Abstract: The present invention relates to a battery cell. The battery cell comprises: an electrode assembly provided with an electrode tab; a case which accommodates the electrode assembly and of which at least a portion of an edge is sealed to provide a sealing surface; an electrode lead coupled to the electrode tab and led out of the case; a lead film disposed on each of top and bottom surfaces of the lead electrode disposed on the sealing surface of the case and coupled together with the sealing surface; and a main gas discharge tube disposed in the case and having one end buried in the lead film.Type: GrantFiled: June 14, 2016Date of Patent: June 30, 2020Assignee: LG CHEM, LTD.Inventors: Cho Long Kim, Yong Su Choi, Sang Hun Kim, Sang Suk Jung, Won Pill Hwang, Yong Kim
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Publication number: 20200168855Abstract: A secondary battery configured to have a structure in which an electrode assembly is received in a battery case together with an electrolytic material, wherein the battery case is provided therein with a space for receiving the electrode assembly and wherein the battery case is made of a thermoplastic resin, which can be injection-molded. An injection mold may be formed such that the size of the mold corresponds to the thickness of the electrode, thereby solving a problem in which the formability of a conventional laminate sheet including a metal layer is low. In addition, a process of forming the laminate sheet and a process of sealing the battery case using a pressing member, which are essentially required in order to use the laminate sheet, may be omitted, whereby a manufacturing process is simplified and thus productivity is improved.Type: ApplicationFiled: July 5, 2018Publication date: May 28, 2020Applicant: LG Chem, Ltd.Inventors: Soo Ji Hwang, Yong Su Choi, Sang Hun Kim, Hyung Kyun Yu, Na Yoon Kim, Min Hyeong Kang, Yong Kim
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Publication number: 20200127246Abstract: A pouch type secondary battery according to the present invention includes: an electrode assembly; a battery case accommodating the electrode assembly in an inside thereof; an electrode tab protruding from the electrode assembly; a first electrode lead having an inner end connected to the electrode tab; a second electrode lead having an inner end coupled to an outer end of the first electrode lead and an outer end extending outside of the battery case; a connection part coupling the first and second electrode leads to each other; an insulation part fused around a portion of each of the first and second electrode leads, the insulation part bonding the first and second electrode leads to the battery case; and a fusion prevention part located at a position at one surface of the first electrode lead, the fusion prevention part preventing the first electrode lead from being fused to the insulation part.Type: ApplicationFiled: November 6, 2018Publication date: April 23, 2020Applicant: LG Chem, Ltd.Inventors: Yong Su Choi, Sang Hun Kim, Min Hyeong Kang, Hyung Kyun Yu, Soo Ji Hwang, Na Yoon Kim, Yong Kim
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Publication number: 20200127272Abstract: A secondary battery is disclosed. According to the present invention, when an internal pressure exceeding a certain level occurs, current may be interrupted to stop an operation of the secondary battery, thereby preventing the secondary battery from being ignited or exploded by the increase in internal pressure of the secondary battery and improving safety of the secondary battery.Type: ApplicationFiled: May 2, 2018Publication date: April 23, 2020Applicant: LG Chem, Ltd.Inventors: Sang Hun Kim, Yong Kim, Yong Su Choi, Hyung Kyun Yu, Soo Ji Hwang, Na Yoon Kim, Min Hyeong Kang
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Publication number: 20200127273Abstract: A secondary battery is disclosed. According to the present invention, when an internal pressure exceeding a certain level occurs, current may be interrupted to stop an operation of the secondary battery, thereby preventing the secondary battery from being ignited or exploded by the increase in internal pressure of the secondary battery and improving safety of the secondary battery.Type: ApplicationFiled: May 9, 2018Publication date: April 23, 2020Applicant: LG Chem, Ltd.Inventors: Sang Hun Kim, Yong Kim, Yong Su Choi, Hyung Kyun Yu, Soo Ji Hwang, Na Yoon Kim, Min Hyeong Kang
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Patent number: 10559785Abstract: The present invention relates to a sealing apparatus sealing a sealing part of a battery case at which an electrode lead coupled to an electrode assembly is disposed. The sealing apparatus comprises: a thermal fusion member applying heat and a pressure to the sealing part of the battery case, at which the electrode lead is disposed, to seal the sealing part; and a temperature rising prevention member supported on a front end of the electrode lead to cool the sealing part through the electrode lead, thereby preventing the sealing part from increasing in temperature.Type: GrantFiled: September 29, 2016Date of Patent: February 11, 2020Assignee: LG Chem, Ltd.Inventors: Cho Long Kim, Yong Su Choi, Sang Hun Kim, Sang Suk Jung, Won Pill Hwang, Yong Kim
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Publication number: 20200044203Abstract: A method for a pouch film according to an embodiment of the present invention includes: a step of applying an adhesive on one surface of a first polymer layer; a step of depositing metal particles on the adhesive; a step of applying heat and a pressure to the deposited metal particles to sinter the metal particles and thereby forming a gas barrier layer; and a step of laminating a second polymer layer on one surface of the gas barrier layer.Type: ApplicationFiled: November 16, 2018Publication date: February 6, 2020Applicant: LG Chem, Ltd.Inventors: Soo Ji Hwang, Sang Hun Kim, Hyung Kyun Yu, Yong Su Choi, Na Yoon Kim, Min Hyeong Kang, Yong Kim
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Publication number: 20200028128Abstract: Disclosed herein is a pouch-shaped battery case, including an electrode assembly, an outer coating layer, a metal barrier layer, and an inner adhesive layer sequentially stacked with one another, a first adhesive layer interposed between the outer coating layer and the metal barrier layer, a second adhesive layer interposed between the metal barrier layer and the inner adhesive layer, an upper case and a lower case sealed to one another by thermal fusion at outer edges thereof, such that the electrode assembly is mounted between the upper case and the lower case, and a gas discharge member providing gas communication between an inside and an outside of the pouch-shaped battery case, the gas discharge member being disposed within a fused portion of the pouch-shaped battery case that is formed by the inner adhesive layer of the upper case and the lower case being thermally fused to one another.Type: ApplicationFiled: July 5, 2018Publication date: January 23, 2020Applicant: LG Chem, Ltd.Inventors: Soo Ji Hwang, Yong Su Choi, Sang Hun Kim, Hyung Kyun Yu, Na Yoon Kim, Min Hyeong Kang, Yong Kim
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Patent number: 10532423Abstract: Provided is a battery pack. The battery pack includes a plurality of battery cells, each of which is provided with an electrode tab, an electrode lead including first and second lead parts respectively connected to the electrode tabs of the adjacent battery cells and a connection part connecting the first and second lead parts to each other, and a bus bar to which the first and second lead parts are coupled and connecting the plurality of battery cells to each other in series or parallel.Type: GrantFiled: November 1, 2016Date of Patent: January 14, 2020Assignee: LG CHEM, LTD.Inventors: Yong Kim, Yong Su Choi, Sang Hun Kim, Sang Suk Jung, Won Pill Hwang, Cho Long Kim
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Publication number: 20190386286Abstract: The present invention relates to a method of manufacturing an electrode lead including: arranging a plurality of lead pieces between a first lead film and a second lead film in a length direction of a lead film including the first lead film and the second lead film; first sealing the first lead film and the second lead film; bending the lead film to form a lead piece laminate in which the plurality of lead pieces are stacked in a height direction with respect to a plane of the lead film; and second sealing the bent lead film overlapping the plurality of lead pieces.Type: ApplicationFiled: July 18, 2018Publication date: December 19, 2019Applicant: LG Chem, Ltd.Inventors: Na Yoon Kim, Yong Su Choi, Sanghun Kim, Hyungkyun Yu, Sooji Hwang, Minhyeong Kang, Yong Kim
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Publication number: 20190207171Abstract: The present disclosure relates to a method for sealing a pouch casing of a pouch-type secondary battery, which includes the steps of: a receiving step in which an electrode assembly is received in an inner space formed between an upper pouch and a lower pouch; and a sealing step in which a first pressure is applied to an outer circumferential sealing portion, where the upper pouch and the lower pouch are sealed, in the longitudinal direction, and then the pressure is relieved, wherein the sealing step is carried out by applying external force to the upper pouch in the upward direction and to the lower pouch in the downward direction, or by applying a second pressure working in perpendicular to the first pressure to the sealing portion from the inner part of the pouch casing in a direction toward the outside.Type: ApplicationFiled: September 28, 2017Publication date: July 4, 2019Applicant: LG CHEM, LTD.Inventors: Yong-Su CHOI, Sang-Hun KIM, Min-Hyeong KANG, Yong KIM, Cho-Long KIM, Hyung-Kyun YU, Ji-Hoon LEE, Soo-Ji HWANG
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Publication number: 20190036148Abstract: Disclosed herein is a battery cell configured to have a structure in which an electrode assembly is received in a battery case together with an electrolytic solution in the state in which the battery case is sealed and in which a first electrode terminal and a second electrode terminal are located outside the battery case, wherein the electrode assembly is configured to have a structure in which a plurality of first electrode plates and a plurality of second electrode plates are stacked in the state in which separators are interposed respectively between the first electrode plates and the second electrode plates, at least one of the first and second electrode plates includes at least two unit tabs protruding outward from a main body thereof, and unit leads are coupled to the unit tabs in order to form at least one terminal unit.Type: ApplicationFiled: November 8, 2017Publication date: January 31, 2019Applicant: LG Chem, Ltd.Inventors: Na Yoon Kim, Hyung-Kyun Yu, Yong-Su Choi, Sang-Hun Kim, Ji-Hoon Lee, Soo-Ji Hwang, Min-Hyeong Kang, Yong Kim