Patents Assigned to SK On Co., Ltd.
  • Patent number: 11958705
    Abstract: An apparatus for loading and unloading a roll includes a roll support portion disposed adjacent to a roll unwinder; a first traveling rail disposed on one side of the roll unwinder; a moving frame movably installed on the first traveling rail; and a roll attaching and detaching unit movably installed on the moving frame, wherein the roll support portion includes a lifting unit configured to move up and down a disposed roll, and wherein the roll attaching and detaching unit includes a moving plate moving on the moving frame, and a main body portion rotatably installed on the moving plate.
    Type: Grant
    Filed: September 29, 2022
    Date of Patent: April 16, 2024
    Assignee: SK ON CO., LTD.
    Inventor: Sang Dock Han
  • Patent number: 11962006
    Abstract: A cathode active material for a lithium secondary battery according to an embodiment of the present invention includes a lithium composite oxide particle that contains lithium and transition metals including an excess amount of nickel. The lithium composite oxide particle satisfies a predetermined XRD peak area relation. A lithium secondary battery using the cathode active material and providing improved stability and durability is provided.
    Type: Grant
    Filed: October 4, 2021
    Date of Patent: April 16, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Soo Ho Kim, Min Gu Kang, Min Suk Kang
  • Patent number: 11961981
    Abstract: Provided are a pouch case and a secondary battery using the same. The pouch case includes a first receiving part and a second receiving part which are concavely formed; a sealing part formed along an outer portion of the pouch case so as to surround the first receiving part and the second receiving part; and a partitioning part formed between the first receiving part and the second receiving part and protruding from a bottom surface of each receiving part to partition the first receiving part and the second receiving part. As one side surface of the secondary battery in which an electrode assembly is received and packaged in the pouch case is formed in a plane form, a flat side surface is in close contact with a cooling plate, thereby maximizing cooling efficiency of the secondary battery.
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: April 16, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Tae Il Kim, Sung Yeop Kim, Won Seok Jeong
  • Patent number: 11958874
    Abstract: According to the embodiment of the present disclosure, an organo tin compound is represented by the following Chemical Formula 1: In Chemical Formula 1, L1 and L2 are each independently selected from an alkoxy group having 1 to 10 carbon atoms and an alkylamino group having 1 to 10 carbon atoms, R1 is a substituted or unsubstituted aryl group having 6 to 8 carbon atoms, and R2 is selected from a substituted or unsubstituted linear alkyl group having 1 to 4 carbon atoms, a branched alkyl group having 3 to 4 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, and an allyl group having 2 to 4 carbon atoms.
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: April 16, 2024
    Assignees: EGTM Co., Ltd., SK hynix Inc.
    Inventors: Jang Keun Sim, Sung Jun Ji, Tae Young Lee, Shin Beom Kim, Sun Young Baik, Tae Hwan Lim, Dong Kyun Lee, Sang Hyun Lee, Su Pill Chun
  • Patent number: 11958750
    Abstract: Provided are a negative electrode active material which includes negative electrode active material particles which includes a silicon oxide (SiOx, 0<x?2); and at least one lithium silicate selected from Li2SiO3, Li2Si2O5, and Li4SiO4 in at least a part of the silicon oxide. The negative electrode active material particles have a maximum peak position by a Raman spectrum of more than 460 cm?1 and less than 500 cm?1. Also provided are a method of preparing the same, and a negative electrode and a lithium secondary battery including the negative electrode active material.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: April 16, 2024
    Assignee: SK On Co., Ltd.
    Inventors: Eunjun Park, Joon-Sup Kim, Gwi Ok Park, Jeongbae Yoon, Suk Chin Lee, Hansu Kim, Donghan Youn, Dong Jae Chung
  • Patent number: 11955604
    Abstract: An electrolyte solution for a lithium secondary battery according to an embodiment of the present invention includes an organic solvent, a lithium salt, a compound represented by Chemical Formula 1, and a compound represented by Chemical Formula 2. A lithium secondary battery including the electrolyte solution and having improved low temperature and high temperature properties is provided.
    Type: Grant
    Filed: April 25, 2023
    Date of Patent: April 9, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Ki Sung Park, Chanwoo Kim, Yu Na Shim, Sung Yon Oh
  • Patent number: 11955625
    Abstract: Provided are a negative electrode active material including a three-dimensional composite. The three-dimensional composite includes secondary particles containing a silicon carbide-based (SiCx, 0<x?1) nanosheet having a bent portion and amorphous carbon. Also provided are a method of producing the same, and a negative electrode and a lithium secondary battery including the negative electrode active material.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: April 9, 2024
    Assignees: SK On Co., Ltd., UNIST (Ulsan National Institute of Science and Technology)
    Inventors: Eunjun Park, Joon-Sup Kim, Jaekyung Sung, Yoon Kwang Lee, Tae Yong Lee, Jae Phil Cho
  • Patent number: 11946976
    Abstract: An apparatus for measuring an insulation resistance according to the present invention includes: a first distribution resistor connected to a positive terminal of a battery and a ground; a first switch connected to the positive terminal of the battery and the first distribution resistor; a second distribution resistor connected to a negative terminal of the battery and the ground; a second switch connected to the negative terminal of the battery and the second distribution resistor; and an insulation resistance measurement unit measuring a resistance value of a negative electrode insulation resistor of the battery using a first voltage applied to the first distribution resistor and measuring a resistance value of a positive electrode insulation resistor of the battery using a second voltage applied to the second distribution resistor.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: April 2, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Ho Sang Jang, Seon Yong Kim, Byoung Kyu Park, Yong Sug Choi
  • Patent number: 11936022
    Abstract: A battery module includes at least one cell group, and a heat dissipating member coupled to one side of the at least one cell group to externally dissipate heat generated in the at least one cell group, wherein the at least one cell group includes at least one battery cell stack, a flame retardant cover coupled to the battery cell stack to encase both side surfaces and an upper portion of the battery cell stack, and a flame retardant member disposed between an upper surface of the battery cell stack and the flame retardant cover and formed of a porous material.
    Type: Grant
    Filed: August 12, 2021
    Date of Patent: March 19, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Hae Ryong Jeon, Ho Yeon Kim, Kang Gu Lee, Seo Roh Rhee
  • Patent number: 11936041
    Abstract: A lithium secondary battery includes a cathode formed from a cathode active material including a first cathode active material particle and a second cathode active material particle, an anode and a separator interposed between the cathode and the anode. The first cathode active material particle includes a lithium metal oxide including a continuous concentration gradient in at least one region between a central portion and a surface portion. The second cathode active material particle includes a lithium metal oxide including elements the same as those of the first cathode active material particle, and the second cathode active material particle has a uniform composition from a central portion to a surface.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: March 19, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Kook Hyun Han, Kyung Bin Yoo, Duck Chul Hwang
  • Patent number: 11929508
    Abstract: An electrode for a secondary battery includes a current collector, a first electrode mixture layer disposed on at least one surface of the current collector and including styrene butadiene rubber, and a second electrode mixture layer disposed on the first electrode mixture layer and including a second styrene butadiene rubber. The first styrene butadiene rubber and the second styrene butadiene rubber have a repeating unit of styrene derived structure and a repeating unit of a butadiene derived structure, the first styrene butadiene rubber containing 40 to 90 mol % of a butadiene monomer based on total content of a monomer, and the second styrene butadiene rubber having a lower content of a butadiene monomer than the content of the first styrene butadiene rubber.
    Type: Grant
    Filed: March 2, 2022
    Date of Patent: March 12, 2024
    Assignee: SK On Co., Ltd.
    Inventors: Hyo Mi Kim, Kwang Ho Jeong
  • Patent number: 11926069
    Abstract: An apparatus for manufacturing an electrode plate, includes an unwinder on which an electrode reel is installed; a meandering corrector correcting meandering of an electrode sheet unwound from the electrode reel; a press puncher disposed at a rear end of the meandering corrector; a cutter disposed at a rear end of the press puncher; a detector disposed between the press puncher and the cutter to acquire an image of the electrode sheet; and a controller connected to the detector and the meandering corrector.
    Type: Grant
    Filed: April 14, 2023
    Date of Patent: March 12, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Bong Kun Cho, Nam Il An, Woo Yeon Cho
  • Patent number: 11929491
    Abstract: An anode for a lithium secondary battery includes an anode current collector, and an anode active material layer formed on at least one surface of the anode current collector. The anode active material layer includes a carbon-based active material, a first silicon-based active material doped with magnesium and a second silicon-based active material not doped with magnesium. A content of the first silicon-based active material is in a range from 2 wt % to 20 wt % based on a total weight of the anode active material layer.
    Type: Grant
    Filed: June 6, 2023
    Date of Patent: March 12, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Hwan Ho Jang, Moon Sung Kim, Hyo Mi Kim, Sang Baek Ryu, Da Hye Park, Seung Hyun Yook, Da Bin Chung, Jun Hee Han
  • Patent number: 11929495
    Abstract: In some implementations, the anode includes a current collector, a first anode mixture layer formed on at least one surface of the current collector, and a second anode mixture layer formed on the first anode mixture layer. The first anode mixture layer and the second anode mixture layer include a carbon-based active material, respectively. The first anode mixture layer includes a first binder, a first silicon-based active material, and a first conductive material. The second anode mixture layer includes a second binder, a second silicon-based active material, and a second conductive material. Contents of the first conductive material and the second conductive material are different from each other with respect to the total combined weight of the first anode mixture layer and the second anode mixture layer. Types of the first silicon-based active material and the second silicon-based active material are different from each other.
    Type: Grant
    Filed: May 18, 2023
    Date of Patent: March 12, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Hyo Mi Kim, Moon Sung Kim, Sang Baek Ryu, Da Hye Park, Seung Hyun Yook, Hwan Ho Jang, Kwang Ho Jeong, Da Bin Chung, Jun Hee Han
  • Patent number: 11921165
    Abstract: The present invention relates to an apparatus and a method capable of calculating insulation resistances and parasitic capacitances of a battery outside the battery. In the present invention, when a positive electrode connector and a negative electrode connector are coupled to a positive electrode terminal and a negative electrode terminal of the battery, respectively, and a ground connector is coupled to a case of the battery, even though the battery is positioned inside a chamber in order to perform a temperature test or the like of the battery, the insulation resistances and the parasitic capacitances of the battery may be calculated without needing to move the battery to the outside of the chamber. Accordingly, the insulation resistances and the parasitic capacitances of the battery may be conveniently calculated.
    Type: Grant
    Filed: March 15, 2023
    Date of Patent: March 5, 2024
    Assignee: SK On Co., Ltd.
    Inventors: Sung Wook An, Ki Bum Sung
  • Patent number: 11923508
    Abstract: Provided is an electrolyte solution for a lithium secondary battery and a lithium secondary battery including the electrolyte solution. The electrolyte solution includes an additive represented by a specific chemical formula, an organic solvent and a lithium salt. The lithium secondary battery including the electrolyte solution provide enhanced high-temperature properties.
    Type: Grant
    Filed: July 10, 2023
    Date of Patent: March 5, 2024
    Assignees: SK On Co., Ltd., SK Innovation Co., Ltd.
    Inventors: Ki Sung Park, Myoung Lae Kim
  • Patent number: 11923540
    Abstract: Provided are a negative electrode active material which includes a negative electrode active material particles which includes a silicon oxide (SiOx, 0<x?2); and at least one lithium silicate selected from Li2SiO3, Li2Si2O5, and Li4SiO4 in at least a part of the silicon oxide. The negative electrode active material has a content of a nitrogen element according to X-ray photoelectron spectroscopy (XPS) of 1.45 atom % or less. Also provided are a negative electrode and a lithium secondary battery including the same.
    Type: Grant
    Filed: July 23, 2021
    Date of Patent: March 5, 2024
    Assignee: SK On Co., Ltd.
    Inventors: Eunjun Park, Joon-Sup Kim, Gwi Ok Park, Hansu Kim, Donghan Youn, Dong Jae Chung
  • Patent number: 11923517
    Abstract: A battery fire detection device according to an embodiment includes: a first sensor configured to detect whether a gas vent of a battery cell is opened; a second sensor configured to detect a temperature of the battery cell; and a controller configured to determine whether there is a risk of fire or whether a fire occurs in the battery cell based on detection results of the first sensor and the second sensor.
    Type: Grant
    Filed: November 12, 2021
    Date of Patent: March 5, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Suk Chul Kim, Dae Won Kwon, Yong Uk Kim, Jong Ho Seok
  • Patent number: 11916244
    Abstract: A battery module includes a module housing including a first plate in which one side is open, a second plate coupled with the first plate to form an internal space, and a partition member disposed across the internal space to couple the first plate with the second plate; and a battery cell stack disposed in the internal space, in which a plurality of battery cells are stacked.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: February 27, 2024
    Assignee: SK On Co., Ltd.
    Inventors: Seok Hwan Lee, Hae Ryong Jeon, Seung Hoon Ju, Young Sun Choi, Myeong Hwan Ma, Sol San Son
  • Patent number: 11916225
    Abstract: A lithium secondary battery includes a cathode, an anode and a separation layer. The cathode includes a cathode current collector and a cathode active material base layer formed on the cathode current collector. The anode includes an anode current collector and an anode active material base layer formed on the anode current collector. The separation layer is interposed between the cathode and the anode. At least one of the cathode and the anode includes an active material coating layer having a thickness of 20 ?m or less.
    Type: Grant
    Filed: April 8, 2020
    Date of Patent: February 27, 2024
    Assignee: SK ON CO., LTD.
    Inventor: Dock Young Yoon