Patents by Inventor Dae Woong Song

Dae Woong Song 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: 20250149732
    Abstract: Disclosed herein is a gas release member and a secondary battery including same. The gas release member can include a sheet having gas permeability. The gas release member can have a hole in a peripheral region of the sheet. The secondary battery can include an electrode assembly and a case accommodating the electrode assembly. The secondary battery can include the gas release member adhered to an inner side of an opening of the secondary battery.
    Type: Application
    Filed: February 8, 2023
    Publication date: May 8, 2025
    Applicant: LG Energy Solution, Ltd.
    Inventors: Hun-Hee Lim, Sang-Hun Kim, Min-Hyeong Kang, Dae-Woong Song, Hyung-Kyun Yu, Soo-Ji Hwang
  • Patent number: 12294105
    Abstract: Disclosed herein is a secondary battery having a vent member. The secondary battery may include an electrode assembly to which an electrode lead is attached, a case including an accommodation portion. The accommodation portion may be defined by a bent side and a sealing portion. The accommodation portion may be configured to receive the electrode assembly and seal the electrode assembly therein. The sealing portion may contain a sealant resin to form a seal around the electrode assembly. The sealing portion may include an extension adjacent to and extending from the bent side. The vent member may be disposed at least partially in the extension. The vent member may include a vent resin having a lower melting point than the sealant resin.
    Type: Grant
    Filed: April 13, 2022
    Date of Patent: May 6, 2025
    Assignee: LG Energy Solution, Ltd.
    Inventors: Dae-Woong Song, Sang-Hun Kim, Min-Hyeong Kang, Hyung-Kyun Yu, Hun-Hee Lim, Soo-Ji Hwang
  • Publication number: 20250105405
    Abstract: Disclosed herein is a high-strength battery case with improved crack resistance during molding and greater protection against external impact. The battery case may be composed a pouch-type battery case with a pouch film laminate body including a gas barrier layer, a base layer on one surface and a sealant layer on the other surface of the gas barrier layer. At least one cup portion of the battery case can have a recessed shape so as to accommodate an electrode assembly, and a terrace positioned in at least a portion of the circumference of the cup portion. The cup portion may includes a bottom surface and a plurality of circumference surfaces surrounding the bottom surface. A thickness of the gas barrier layer is may be greater than 30 ?m at a corner at which the bottom surface comes in in contact with a pair of circumferences adjacent to each other.
    Type: Application
    Filed: December 22, 2022
    Publication date: March 27, 2025
    Applicant: LG Energy Solution, Ltd.
    Inventors: Min Hyeong Kang, Sang Hun Kim, Hyung Kyun Yu, Soo Ji Hwang, Dae Woong Song, Hun Hee Lim
  • Patent number: 12255348
    Abstract: The secondary battery includes an electrode assembly to which an electrode lead is attached; a case configured to receive the electrode assembly therein; a lead film configured to surround a part of an outer surface of the electrode lead and interposed between the electrode lead and the case; a vent region formed in at least a part of the case; and a vent member inserted into the vent region and configured to contain linear low-density polyethylene having a poly dispersity index (PDI) of 4 or less, wherein the vent member has a maximum sealing strength of less than 6 kgf/15 mm at 100° C. or above and a maximum sealing strength of 6 kgf/15 mm or more at room temperature to 60° C.
    Type: Grant
    Filed: April 13, 2022
    Date of Patent: March 18, 2025
    Assignee: LG Energy Solution, Ltd.
    Inventors: Dae-Woong Song, Sang-Hun Kim, Min-Hyeong Kang, Hyung-Kyun Yu, Hun-Hee Lim, Soo-Ji Hwang
  • Publication number: 20250079575
    Abstract: A method for manufacturing a pouch case for a secondary battery includes the steps of: (S1) preparing a pouch exterior for a secondary battery including a structure in which a substrate layer, a barrier layer, and a sealant layer are sequentially stacked; (S2) reducing a modulus of the sealant layer by 20-50%; and (S3) molding the pouch exterior for a secondary battery to form a cup part.
    Type: Application
    Filed: December 22, 2022
    Publication date: March 6, 2025
    Applicant: LG Energy Solution, Ltd.
    Inventors: Ji Young Hwang, Dae Woong Song, Sang Hun Kim, Yong Su Choi, Hyung Kyun Yu
  • Publication number: 20250062451
    Abstract: The present invention relates to a pouch film laminate body capable of manufacturing a high-strength battery case with excellent resistance to external stress and a battery case manufactured using the same. The pouch film laminate body of the present invention includes a gas barrier layer having a thickness of 60 ?m or greater, a base layer disposed on one surface of the gas barrier layer, and a sealant layer disposed on the other surface of the gas barrier layer. The pouch film laminate layer has a tensile strength of 10 kgf/15 mm to 20 kgf/15 mm in a TD direction and an elongation of 150% to 235% in the TD direction.
    Type: Application
    Filed: December 23, 2022
    Publication date: February 20, 2025
    Applicant: LG Energy Solution, Ltd.
    Inventors: Min Hyeong Kang, Sang Hun Kim, Hyung Kyun Yu, Soo Ji Hwang, Dae Woong Song, Hun Hee Lim
  • Publication number: 20250062449
    Abstract: A method for manufacturing a pouch case for a secondary battery includes the steps of: (S1) preparing a pouch exterior for a secondary battery including a structure in which a substrate layer, a barrier layer, and a sealant layer are sequentially stacked; (S2) molding the pouch exterior for a secondary battery to form a cup part; and (S3) reducing cracks of the sealant layer of the pouch exterior for a secondary battery.
    Type: Application
    Filed: December 22, 2022
    Publication date: February 20, 2025
    Applicant: LG Energy Solution, Ltd.
    Inventors: Ji Young Hwang, Dae Woong Song, Sang Hun Kim, Yong Su Choi, Hyung Kyun YU
  • Publication number: 20240421391
    Abstract: Disclose herein is a pouch film laminate body including a gas barrier layer, a base layer disposed on one surface of the gas barrier layer, and a sealant layer disposed on the other surface of the gas barrier layer. A loop stiffness of the pouch film laminate body in machine direction of the pouch film laminate body may be 750 mN to 1300 mN.
    Type: Application
    Filed: December 22, 2022
    Publication date: December 19, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Soo Ji Hwang, Dae Woong Song, Sang Hun Kim, Hyung Kyun Yu, Min Hyeong Kang, Hun Hee Lim
  • Patent number: 12126034
    Abstract: A battery cell including a case and an electrode assembly. The case having an accommodation portion in which the electrode assembly is mounted, and a sealing portion formed by sealing an outer periphery thereof. An electrode tab of the electrode assembly is electrically connected to an electrode lead that protrudes out of the case through the sealing portion. A lead film is located at a portion corresponding to the sealing portion in at least one of an upper portion or a lower portion of the electrode lead. The lead film has a dented portion recessed in an outer direction of the case and that is open toward the inside of the case. The sealing portion has an indented sealing portion that does not overlap with at least a part of the gas discharge portion on a plane.
    Type: Grant
    Filed: January 20, 2023
    Date of Patent: October 22, 2024
    Assignee: LG Energy Solution, Ltd.
    Inventors: Min-Hyeong Kang, Sang-Hun Kim, Dae-Woong Song, Hyung-Kyun Yu, Hun-Hee Lim, Soo-Ji Hwang
  • Publication number: 20240266645
    Abstract: A pouch film stack according to the present invention includes a base layer, a gas barrier layer, and a sealant layer stacked in that order. The sealant layer includes a first sealant layer located adjacent to the gas barrier layer and a second sealant layer stacked on the first sealant layer. A percentage difference in yield strength between the first and second sealant layers (?Y) is 66% to 120%, where ?Y is defined as: {(Yield strength of second sealant layer?Yield strength of first sealant layer)/Yield strength of first sealant layer}×100.
    Type: Application
    Filed: September 28, 2022
    Publication date: August 8, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Soo Ji Hwang, Sang Hun Kim, Hyung Kyun Yu, Min Hyeong Kang, Dae Woong Song, Hun Hee Lim
  • Publication number: 20240266646
    Abstract: A pouch film laminate includes a first base layer, a second base layer, a gas barrier layer and a sealant layer, which are sequentially stacked, and the moisture content index of the second base layer, which is represented by a predetermined Formula, is about 17,000 ppm·g/cm3 or less.
    Type: Application
    Filed: February 2, 2024
    Publication date: August 8, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Dae Woong Song, Soo Ji Hwang, Sang Hun Kim, Min Hyeong Kang
  • Publication number: 20240266644
    Abstract: Disclosed is a battery cell, which includes a battery case having an accommodation portion in which an electrode assembly is mounted, and a sealing portion formed by sealing an outer periphery thereof. The battery case further includes an electrode lead electrically connected to an electrode tab included in the electrode assembly and protruding out of the battery case through the sealing portion, and a lead film located at a portion corresponding to the sealing portion in at least one of an upper portion and a lower portion of the electrode lead. The lead film has a dented portion recessed in an outer direction of the battery case and opened toward the inside of the battery case. The battery cell also has a coating layer located on a gas discharge portion of the lead film that contains a fluorine-based polymer.
    Type: Application
    Filed: January 20, 2023
    Publication date: August 8, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Hun Hee Lim, Sang-Hun Kim, Min-Hyeong Kang, Dae-Woong Song, Hyung-Kyun Yu, Soo-Ji Hwang
  • Publication number: 20240266652
    Abstract: A battery cell including a case and an electrode assembly. The case having an accommodation portion in which the electrode assembly is mounted, and a sealing portion formed by sealing an outer periphery thereof. An electrode tab of the electrode assembly is electrically connected to an electrode lead that protrudes out of the case through the sealing portion. A lead film is located at a portion corresponding to the sealing portion in at least one of an upper portion or a lower portion of the electrode lead. The lead film has a dented portion recessed in an outer direction of the case and that is open toward the inside of the case. The sealing portion has an indented sealing portion that does not overlap with at least a part of the gas discharge portion on a plane.
    Type: Application
    Filed: January 20, 2023
    Publication date: August 8, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Min-Hyeong Kang, Sang-Hun Kim, Dae-Woong Song, Hyung-Kyun Yu, Hun-Hee Lim, Soo-Ji Hwang
  • Publication number: 20240213590
    Abstract: Provided is a pouch for a secondary battery and a lithium secondary battery including the same. The pouch for the secondary battery includes a barrier layer, a base material layer disposed on one surface of the barrier layer, and a sealant layer disposed on the other surface of the barrier layer. The sealant layer includes a first sealant layer disposed on directly in contact with the other surface of the barrier layer, and a second sealant layer disposed on the first sealant layer. The sealant layer has a melt flow rate (MFR) of about 14.0 g/10 min or less, which is measured at a temperature of about 230° C. under a load condition of about 2.16 kg.
    Type: Application
    Filed: December 19, 2023
    Publication date: June 27, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Min Hyuk Yun, Duck Hoe Kim, In Yong Baek, Ji Young Hwang, Jeong Hyeon Park, Wan Gyeong Jang, Dae Woong Song, Moo Yeon Kim
  • Publication number: 20240154272
    Abstract: A secondary battery according to an embodiment of the present disclosure includes an electrode assembly to which an electrode lead is attached; a case accommodating the electrode assembly so that a portion of the electrode lead is exposed to the outside; a sealing portion formed in the case to seal the electrode assembly; and a lead film covering a portion of an outer surface of the electrode lead and interposed between the electrode lead and the sealing portion, wherein the electrode lead includes a first region not corresponding to the lead film and exposed to the outside of the case, a second region corresponding to the lead film, and a third region not corresponding to the lead film and not exposed to the outside of the case, wherein a separation groove may be located in the third region.
    Type: Application
    Filed: October 11, 2022
    Publication date: May 9, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Gyung-Soo Kang, Dae-Woong Song, Jae-Ho Lee, Ji-Young Hwang
  • Publication number: 20240106070
    Abstract: Disclosed is a battery cell, which includes a battery case having an accommodation portion in which an electrode assembly is mounted, and a sealing portion formed by sealing an outer periphery thereof; an electrode lead electrically connected to an electrode tab included in the electrode assembly and protruding out of the battery case via the sealing portion; and a lead film located at a portion corresponding to the sealing portion in at least one of an upper portion and a lower portion of the electrode lead, wherein a gas discharge guiding unit is inserted in the lead film, the battery case includes a cover portion extending from the sealing portion, and the cover portion is located on the lead film and protrudes in an outer direction of the battery case.
    Type: Application
    Filed: July 6, 2022
    Publication date: March 28, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Dae-Woong Song, Sang-Hun Kim, Min-Hyeong Kang, Hyung-Kyun Yu, Hun-Hee Lim, Soo-Ji Hwang
  • Publication number: 20240088493
    Abstract: The present disclosure relates to a secondary battery comprising an electrode assembly having an electrode lead attached thereto, a case comprising a receiving portion in which the electrode assembly is received and a sealing portion comprising a sealant resin and configured to seal the electrode assembly, a lead film configured to cover a portion of an outer surface of the electrode lead and interposed between the electrode lead and the case, a vent area disposed in at least a portion of the case, and a vent member comprising a first layer comprising a resin having lower melting point than the sealant resin, and a second layer disposed on at least one surface of the first layer and comprising an adhesive material. The vent member may be inserted into the vent area. A thickness of the second layer may be equal to or smaller than 5 ?m.
    Type: Application
    Filed: December 13, 2022
    Publication date: March 14, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Sang-Hun Kim, Dae-Woong Song, Min-Hyeong Kang, Hyung-Kyun Yu, Hun-Hee Lim, Soo-Ji Hwang
  • Publication number: 20240030522
    Abstract: Disclosed is a battery cell, which includes a battery case having an accommodation portion in which an electrode assembly is configured to be mounted, and a sealing portion formed by sealing an outer periphery of the battery case; an electrode lead electrically connected to an electrode tab included in the electrode assembly and protruding out of the battery case via the sealing portion; and a lead film located at a portion corresponding to the sealing portion in at least one of a first side and a second side of the electrode lead, wherein the lead film includes a first adhesive layer and a second adhesive layer, and a moisture removal layer is disposed between the first adhesive layer and the second adhesive layer, and the moisture removal layer includes a getter material.
    Type: Application
    Filed: April 21, 2022
    Publication date: January 25, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Hun-Hee Lim, Sang-Hun Kim, Min-Hyeong Kang, Dae-Woong Song, Hyung-Kyun Yu, Soo-Ji Hwang
  • Publication number: 20240014506
    Abstract: Disclosed herein is a secondary battery having a vent member. The secondary battery may include an electrode assembly, a case for accommodating the electrode assembly and a vent member. The vent member is configured to protrude to the outside of the case, and one end of the vent member protruding to the outside of the case is joined to an outer side of the case.
    Type: Application
    Filed: April 15, 2022
    Publication date: January 11, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Hun-Hee Lim, Sang-Hun Kim, Min-Hyeong Kang, Dae-Woong Song, Hyung-Kyun Yu, Soo-Ji Hwang
  • Publication number: 20230420796
    Abstract: Disclosed herein is a secondary battery having a vent member. The secondary battery may include an electrode assembly; an electrode lead attached to the electrode assembly; a case configured to accommodate the electrode assembly therein; a lead film formed to surround a part of an outer surface of the electrode lead and interposed between the electrode lead and the case; and a vent member, wherein the case contains a sealant layer, and a thermal conductive layer is included in the sealant layer.
    Type: Application
    Filed: April 15, 2022
    Publication date: December 28, 2023
    Applicant: LG Energy Solution, Ltd.
    Inventors: Hun-Hee Lim, Sang-Hun Kim, Min-Hyeong Kang, Dae-Woong Song, Hyung-Kyun Yu, Soo-Ji Hwang