The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 05, 2006
Filed:
Oct. 03, 2005
Yu-tack Kim, Gyeonnggi-do, KR;
Moon-bae Lee, Gyeonggi-do, KR;
Sang-hyun Lee, Seoul, KR;
Sang-ick Lee, Seoul, KR;
Chul-wan Park, Seoul, KR;
Jin-bae Park, Seoul, KR;
Kwang-chul Roh, Gyeonggi-do, KR;
Jin-hyoung Son, Seoul, KR;
Seung-hwan Song, Seoul, KR;
Yu-Tack Kim, Gyeonnggi-do, KR;
Moon-Bae Lee, Gyeonggi-do, KR;
Sang-Hyun Lee, Seoul, KR;
Sang-Ick Lee, Seoul, KR;
Chul-Wan Park, Seoul, KR;
Jin-Bae Park, Seoul, KR;
Kwang-Chul Roh, Gyeonggi-do, KR;
Jin-Hyoung Son, Seoul, KR;
Seung-Hwan Song, Seoul, KR;
Korchip Co., Ltd., Seoul, KR;
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. Accordingly, the present invention has advantages in that an EDLC with a single cell can be applied to products, an EDLC module can be miniaturized, and there is no need for a protection circuit for maintaining voltage balance on a unit cell basis upon fabrication of the module.