Patents by Inventor Wanmook Lim

Wanmook Lim 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: 8691419
    Abstract: A cylindrical secondary battery having improved performance in a compression test and a collision test. The cylindrical battery including a ceramic layer coated on at least one of a cathode plate and an anode plate, and a center pin having a wall thickness of 0.05 to 0.1 mm, which is inserted into the center of an electrode assembly of the battery. The ceramic layer can have a thickness of 6.0 ?m to 8.0 ?m.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: April 8, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Myungro Lee, Youngcheol Jang, Cheolhee Hwang, Wanmook Lim, Wonchull Han, Hyorim Bak
  • Patent number: 7985498
    Abstract: A lithium secondary battery that can improve safety of the battery. The lithium secondary battery comprises a jelly-roll type electrode assembly including first and second electrode plates having different polarities, and a separator interposed between the electrode plates. A porous ceramic film is coated on an active material of the first electrode plate, and the porous ceramic film is coated on one surface of an active material uncoated part of the first an outmost electrode plate and the porous ceramic film is not coated on another surface thereof.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: July 26, 2011
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Wanmook Lim
  • Publication number: 20090208826
    Abstract: A cylindrical secondary battery having improved performance in a compression test and a collision test. The cylindrical battery including a ceramic layer coated on at least one of a cathode plate and an anode plate, and a center pin having a wall thickness of 0.05 to 0.1 mm, which is inserted into the center of an electrode assembly of the battery. The ceramic layer can have a thickness of 6.0 ?m to 8.0 ?m.
    Type: Application
    Filed: February 18, 2009
    Publication date: August 20, 2009
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Myungro LEE, Youngcheol JANG, Cheolhee HWANG, Wanmook LIM, Wonchull HAN, Hyorim BAK
  • Publication number: 20090092889
    Abstract: Provided is a lithium secondary battery which is stable to penetration of a sharp object, which may occur by external impact. The lithium secondary battery comprises an electrode assembly which is formed by winding a first electrode plate, a second electrode plate, and a separator disposed between the first electrode plate and the second electrode plate; and a can for receiving the electrode assembly, wherein the separator is formed of a ceramic material, a polarity of the first electrode plate is opposite to that of the can, and the outermost part of the first electrode plate is disposed further outside than the outermost part of the second electrode plate.
    Type: Application
    Filed: October 8, 2008
    Publication date: April 9, 2009
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Cheolhee Hwang, Wanmook Lim, Hyorim Bak, Myungro Lee, Youngchurl Chang
  • Publication number: 20080299454
    Abstract: A lithium secondary battery includes two electrode plates having different polarities and has a ceramic film provided on one electrode plate of the two, wherein the electrode plate coated with the ceramic film has a front edge positioned ahead of a front edge of another electrode plate, and/or has a back edge positioned behind a back edge of the other electrode plate when the two electrode plates are laminated and/or spirally wound. Aspects of the present invention provide such a lithium secondary battery to prevent a short circuit between the ceramic film-employed electrode plates and the electrode collector of electrode plates having different polarities when the ceramic film-employed electrode plates are laminated or spirally wound, thereby improving stability and reliability of the battery.
    Type: Application
    Filed: February 20, 2008
    Publication date: December 4, 2008
    Applicant: Samsung SDI Co., Ltd.
    Inventor: Wanmook Lim
  • Publication number: 20080299450
    Abstract: A lithium secondary battery that can improve safety of the battery. The lithium secondary battery comprises a jelly-roll type electrode assembly including first and second electrode plates having different polarities, and a separator interposed between the electrode plates. A porous ceramic film is coated on an active material of the first electrode plate, and the porous ceramic film is coated on one surface of an active material uncoated part of the first an outmost electrode plate and the porous ceramic film is not coated on another surface thereof.
    Type: Application
    Filed: February 20, 2008
    Publication date: December 4, 2008
    Applicant: Samsung SDI Co., Ltd.
    Inventor: WANMOOK LIM
  • Publication number: 20080138699
    Abstract: A jelly roll electrode assembly, including a ceramic separator instead of a film separator and a secondary battery using the assembly, can be easily wound by forming a long non-coating portion of plate instead of the film separator to prevent cross-winding of the electrode assembly and the mandrel due to a friction by separating the wound electrode assembly from the mandrel, and to improve reliability.
    Type: Application
    Filed: December 5, 2007
    Publication date: June 12, 2008
    Inventors: Jinhee Kim, Sangok Lee, Wanmook Lim