Patents by Inventor Sung-Hoon Yu

Sung-Hoon Yu 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).

  • Patent number: 10193182
    Abstract: Disclosed are: a non-aqueous electrolyte for a lithium secondary battery containing 1-20 parts by weight of a cyano group-containing pyrimidine-based compound on the basis of 100 parts by weight of an organic solvent; and a lithium secondary battery comprising the same.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: January 29, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Hoon Yu, Doo-Kyung Yang, Min-Jung Jou, Yoo-Sun Kang, Yoo-Seok Kim
  • Publication number: 20190013520
    Abstract: The present invention may improve the lifetime characteristics of a lithium secondary battery, and particularly, may provide a non-aqueous electrolyte solution or cathode including a phosphate-based compound which may exhibit stable and excellent lifetime characteristics at high temperature and high voltage regardless of the moisture content or the presence of a pressing process of the electrode.
    Type: Application
    Filed: September 13, 2018
    Publication date: January 10, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Sung Hoon Yu, Kyung Mi Lee, Doo Kyung Yang, Yoo Sun Kang, Jung Hoon Lee
  • Patent number: 10170791
    Abstract: Provided are a lithium secondary battery including a cathode, an anode, a separator, and a gel polymer electrolyte, wherein the gel polymer electrolyte includes an acrylate-based polymer and a charge voltage of the battery is in a range of 4.3 V to 5.0 V, and a method of preparing the lithium secondary battery. A high-voltage lithium secondary battery of the present invention has excellent capacity characteristics at a high voltage of 4.3 V or more.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: January 1, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Sung Hoon Yu, Doo Kyung Yang, Sun Sik Shin, Song Taek Oh, Yoo Sun Kang, Kyung Mi Lee, Jin Hyun Park, Jung Don Suk
  • Publication number: 20180354497
    Abstract: A hybrid electric vehicle which may effectively determine a point in time of shift pattern change and a method of controlling a shift pattern therefor are disclosed. The method includes determining whether or not a request for shift pattern change is received, determining HEV mode related conditions, in response to a determination that the request for shift pattern change is received, and changing a shift pattern according to the request for shift pattern change, in response to a determination that the HEV mode related conditions are satisfied.
    Type: Application
    Filed: December 7, 2017
    Publication date: December 13, 2018
    Inventors: Jea Mun LEE, Ji Hoon KANG, Sung Hoon YU, Jung Min CHA, Joon Young PARK, Sung Deok KIM
  • Patent number: 10153518
    Abstract: Disclosed is a lithium secondary battery including a positive electrode, a negative electrode, a separator and a nonaqueous electrolyte, wherein the positive electrode includes LiaNixMnyCozO2 (a+x+y+z=2, 0.9?a?1.1, 0?x, 0?y, 0?z) as a positive electrode active material, and wherein the nonaqueous electrolyte includes (i) fluorinated cyclic carbonate expressed by Chemical Formula 1 below, (ii) propionate-based ester expressed by Chemical Formula 2 below, and (iii) non-halogenated carbonate, so that a mixture weight ratio (i:ii) thereof is 20:80 to 50:50: wherein, in Chemical Formula 1, R1, R2, R3 and R4 are independently any one of F, H and methyl group, and at least one thereof is F, wherein, in Chemical Formula 2, R5 is alkyl group having 1 to 5 carbons.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: December 11, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Hoon Yu, Doo-Kyung Yang, Min-Hyung Lee, Jong-Ho Jeon
  • Patent number: 10115968
    Abstract: The present invention may improve the lifetime characteristics of a lithium secondary battery, and particularly, may provide a non-aqueous electrolyte solution or cathode including a phosphate-based compound which may exhibit stable and excellent lifetime characteristics at high temperature and high voltage regardless of the moisture content or the presence of a pressing process of the electrode.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: October 30, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Sung Hoon Yu, Kyung Mi Lee, Doo Kyung Yang, Yoo Sun Kang, Jung Hoon Lee
  • Patent number: 10026992
    Abstract: The present invention relates to an additive for a non-aqueous electrolyte solution which may improve overcharge safety, a non-aqueous electrolyte solution for a lithium secondary battery including the same, and a lithium secondary battery including the non-aqueous electrolyte solution.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: July 17, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Sung Hoon Yu, Hyun Yeong Lee, Yoo Sun Kang, Kyung Mi Lee
  • Publication number: 20180198157
    Abstract: The present invention relates to a non-aqueous electrolyte additive, and a non-aqueous electrolyte for a lithium secondary battery including the same and a lithium secondary battery, and particularly, to a non-aqueous electrolyte additive having a nitrile group and a propargyl group, and a non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery, which include the non-aqueous electrolyte additive so that capacity and cycle lifespan characteristics at high temperature can be improved.
    Type: Application
    Filed: March 21, 2017
    Publication date: July 12, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Sung Hoon Yu, Kyung Mi Lee
  • Publication number: 20180191024
    Abstract: The present invention relates to a method of preparing a secondary battery which includes providing a film layer, which includes a first solvent having a melting temperature of 25° C. or more and a viscosity of 1.5 cP or more, between a separator and an electrode (step 1), preparing an electrode assembly by using the electrode, the film layer, and the separator (step 2), and accommodating the electrode assembly in a case, injecting an injection solution including a second solvent, and sealing the case (step 3), and a secondary battery prepared by the method. According to the method of preparing a secondary battery of the preset invention, since electrolyte solution impregnability may be improved, performance and safety of the secondary battery may be further improved.
    Type: Application
    Filed: March 30, 2017
    Publication date: July 5, 2018
    Applicant: LG Chem, Ltd.
    Inventor: Sung Hoon Yu
  • Publication number: 20180191031
    Abstract: The present invention relates to: a non-aqueous electrolyte additive comprising, as a substituent, at least one cyano group and/or at least one fluorine element; a non-aqueous electrolyte for a lithium secondary battery, comprising the same; and a lithium secondary battery including the non-aqueous electrolyte.
    Type: Application
    Filed: October 26, 2016
    Publication date: July 5, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Sung Hoon Yu, Yoo Sun Kang, Kyung Mi Lee
  • Publication number: 20180123107
    Abstract: The present disclosure refers to a secondary battery which comprises a high-voltage cathode active material and a separator whose pores are not obstructed even though being used together with the high-voltage cathode active material, thereby preventing the obstruction of pores in the separator and the formation of a dendrite in the anode and eventually providing good battery life performance.
    Type: Application
    Filed: December 21, 2017
    Publication date: May 3, 2018
    Applicants: LG Chem, Ltd., TORAY INDUSTRIES, INC.
    Inventors: Sung-Hoon Yu, Jung-Don Suk, Seok-Koo Kim, Doo-Kyung Yang, Yoo-Sun Kang, Kyung-Mi Lee, Jin-Hyun Park
  • Patent number: 9887407
    Abstract: The present disclosure refers to a secondary battery which comprises a high-voltage cathode active material and a separator whose pores are not obstructed even though being used together with the high-voltage cathode active material, thereby preventing the obstruction of pores in the separator and the formation of a dendrite in the anode and eventually providing good battery life performance.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: February 6, 2018
    Assignees: LG Chem, Ltd., TORAY INDUSTRIES, INC.
    Inventors: Sung-Hoon Yu, Jung-Don Suk, Seok-Koo Kim, Doo-Kyung Yang, Yoo-Sun Kang, Kyung-Mi Lee, Jin-Hyun Park
  • Patent number: 9882239
    Abstract: Provided are a composition for a gel polymer electrolyte including i) an electrolyte solution solvent, ii) an ionizable lithium salt, iii) a polymerization initiator, and iv) a monomer having a functional group bondable to metal ions, and a lithium secondary battery including the composition for a gel polymer electrolyte. In a case where the composition for a gel polymer electrolyte of the present invention is used in a lithium secondary battery, since the movement of metal ions dissolved from a cathode to an anode may be prevented or the precipitation of metal on the anode may be reduced, the lifetime of the battery may not only be improved but capacity characteristics of the battery may also be excellent even in the case in which the battery is charged at a high voltage as well as normal voltage.
    Type: Grant
    Filed: April 9, 2014
    Date of Patent: January 30, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Sung Hoon Yu, Doo Kyung Yang, Sun Sik Shin, Song Taek Oh, Yoo Sun Kang, Kyung Mi Lee, Jin Hyun Park, Jung Don Suk
  • Patent number: 9871271
    Abstract: The present invention provides non-aqueous electrolyte solution for a lithium secondary battery, comprising a pyrimidine-based compound, a non-fluorinated solvent and a fluorinated solvent; and a lithium secondary battery using the same.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: January 16, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Hoon Yu, Doo Kyung Yang, Min-Jung Jou, Yoo-Seok Kim, Yoo-Sun Kang
  • Publication number: 20180013168
    Abstract: Disclosed are: a non-aqueous electrolyte for a lithium secondary battery containing 1-20 parts by weight of a cyano group-containing pyrimidine-based compound on the basis of 100 parts by weight of an organic solvent; and a lithium secondary battery comprising the same.
    Type: Application
    Filed: March 31, 2016
    Publication date: January 11, 2018
    Applicant: LG Chem, Ltd.
    Inventors: Sung-Hoon Yu, Doo-Kyung Yang, Min-Jung Jou, Yoo-Sun Kang, Yoo-Seok Kim
  • Patent number: 9831523
    Abstract: The present invention provides non-aqueous electrolyte solution for a lithium secondary battery, comprising fluoroethylene carbonate and a pyrimidine-based compound; and a lithium secondary battery using the same.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: November 28, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Hoon Yu, Doo-Kyung Yang, Min-Jung Jou, Yoo-Seok Kim, Yoo-Sun Kang
  • Patent number: 9728805
    Abstract: Disclosed are a nonaqueous electrolyte for a lithium secondary battery containing a hetero polycyclic compound and a lithium secondary battery using the same.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: August 8, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Sung-Hoon Yu, Doo Kyung Yang, Jong-Ho Jeon, Min-Jung Jou
  • Publication number: 20170125846
    Abstract: The present invention relates to an additive for a non-aqueous electrolyte solution which may improve overcharge safety, a non-aqueous electrolyte solution for a lithium secondary battery including the same, and a lithium secondary battery including the non-aqueous electrolyte solution.
    Type: Application
    Filed: November 2, 2016
    Publication date: May 4, 2017
    Applicant: LG Chem, Ltd.
    Inventors: Sung Hoon Yu, Hyun Yeong Lee, Yoo Sun Kang, Kyung Mi Lee
  • Publication number: 20170125847
    Abstract: The present invention relates to an additive for a non-aqueous electrolyte solution, which has an excellent effect of adsorbing metal ions dissolved from a positive electrode, a non-aqueous electrolyte solution for a lithium secondary battery including the same, and a lithium secondary battery including the non-aqueous electrolyte solution.
    Type: Application
    Filed: November 2, 2016
    Publication date: May 4, 2017
    Applicant: LG Chem, Ltd.
    Inventors: Sung Hoon Yu, Hyun Yeong Lee, Yoo Sun Kang, Kyung Mi Lee
  • Publication number: 20170125845
    Abstract: The present invention relates to an additive for a non-aqueous electrolyte solution including a compound represented by Formula 1 below, a non-aqueous electrolyte solution for a lithium secondary battery including the same, and a lithium secondary battery including the non-aqueous electrolyte solution. NC—(R)n—CN ??[Formula 1] (in Formula 1, R is a cycloalkylene group having 3 to 6 carbon atoms in which at least one cyano group (—CN) is substituted or unsubstituted, a haloalkylene group having 2 to 5 carbon atoms in which at least one cyano group (—CN) is substituted or unsubstituted, or an alkylene group having 2 to 5 carbon atoms in which at least one cyano group (—CN) is substituted, and n is an integer of 1 to 5.
    Type: Application
    Filed: October 24, 2016
    Publication date: May 4, 2017
    Applicant: LG Chem, Ltd.
    Inventors: Sung Hoon Yu, Yoo Sun Kang, Kyung Mi Lee