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:
Mar. 13, 2012
Filed:
Sep. 15, 2009
Young Hee Han, Daejeon, KR;
SE Yong Jung, Daejeon, KR;
Jeong Phil Lee, Daejeon, KR;
Byung Jun Park, Daejeon, KR;
Byeong Cheol Park, Daejeon, KR;
Nyeon Ho Jeong, Daejeon, KR;
Tae Hyun Sung, Daejeon, KR;
Young Hee Han, Daejeon, KR;
Se Yong Jung, Daejeon, KR;
Jeong Phil Lee, Daejeon, KR;
Byung Jun Park, Daejeon, KR;
Byeong Cheol Park, Daejeon, KR;
Nyeon Ho Jeong, Daejeon, KR;
Tae Hyun Sung, Daejeon, KR;
Korea Electric Power Corporation, Seoul, KR;
Abstract
Disclosed is a large capacity hollow-type flywheel energy storage device. The energy storage device includes a hollow shaft, a vacuum chamber receiving the hollow shaft, a flywheel having a predetermined weight and disposed at an inner edge of the vacuum chamber, and a hub connecting the flywheel to the hollow shaft and disposed in the vacuum chamber to be rotatable together with the flywheel. A superconductive bearing and an electromagnet bearing are disposed inside and outside the hollow shaft, respectively, such that magnetic forces thereof can be shielded from each other. Thus, magnetic interference between the superconductive bearing and the electromagnet bearing is shielded by the magnet shield interposed therebetween, thereby preventing rotation loss by stabilizing a structural mechanism during rotation while improving design adaptability.