Patents Assigned to Ness Cap Co., Ltd.
  • Electric energy storage device and method of charging and discharging the same
    Patent number: 7660084
    Abstract: Disclosed are an electric energy storage device having a good cycle characteristic and a temperature characteristic and a method of charging and discharging the electric energy storage device. The electric energy storage device including a capacitor and a secondary battery combined in series is provided. When the capacitor of the electric energy storage device is an electric double layer capacitor, the capacitor is used to the voltage of OV or less to increase an available energy usage.
    Type: Grant
    Filed: December 13, 2003
    Date of Patent: February 9, 2010
    Assignee: Ness Cap Co., Ltd.
    Inventors: Sung-Min Kim, Hee-Young Lee, Yong-Ho Jung, Heui-Soo Kim, Sung-Chul Park, Ha-Young Lee, Eun-Sil Kim