Abstract: The present invention relates to a high-voltage electric double layer capacitor (EDLC), and more particularly, to an EDLC in which a surge voltage and an operating voltage are enhanced by improving the structure of a unit cell. The EDLC according to the present invention includes a unit cell having at least three electrodes. According to a preferred embodiment of the present invention, the unit cell has a structure constructed by sequentially laminating a first insulating paper layer with a sheet of insulating paper, a first electrode layer with at least two electrodes, a second insulating paper layer with a sheet of insulating paper, and a second electrode layer with at least one electrode. In accordance with the present invention, the number of electrode-facing surfaces increases, and a surge voltage and an operating voltage increase in proportion to the increased number of the electrode-facing surfaces, resulting in a high energy storage density.
Type:
Grant
Filed:
October 3, 2005
Date of Patent:
December 5, 2006
Assignee:
Korchip Co., Ltd.
Inventors:
Yu-Tack Kim, Moon-Bae Lee, Sang-Hyun Lee, Sang-Ick Lee, Chul-Wan Park, Jin-Bae Park, Kwang-Chul Roh, Jin-Hyoung Son, Seung-Hwan Song
Abstract: The present invention relates to a high-voltage electric double layer capacitor (EDLC), and more particularly, to an EDLC in which a surge voltage and an operating voltage are enhanced by improving the structure of a unit cell. The EDLC according to the present invention includes a unit cell having at least three electrodes. According to a preferred embodiment of the present invention, the unit cell has a structure constructed by sequentially laminating a first insulating paper layer with a sheet of insulating paper, a first electrode layer with at least two electrodes, a second insulating paper layer with a sheet of insulating paper, and a second electrode layer with at least one electrode. In accordance with the present invention, the number of electrode-facing surfaces increases, and a surge voltage and an operating voltage increase in proportion to the increased number of the electrode-facing surfaces, resulting in a high energy storage density.
Type:
Application
Filed:
October 3, 2005
Publication date:
October 5, 2006
Applicant:
Korchip Co., Ltd.
Inventors:
Yu-Tack Kim, Jin-Hyoung Son, Moon-Bae Lee, Sang-Hyun Lee, Kwang-Chul Roh, Seung-Hwan Song, Chul-Wan Park, Sang-Ick Lee, Jin-Bae Park