Energy storage systems
US8484986B2 · kind B2 · utility
9Cited by
25References
48Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 17, 2011 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Mar 7, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25B2400/24
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention provides an energy storage device that utilizes a cold sink that undergoes cycles of freezing and thawing. The device converts electrical energy to stored thermal energy, and then re-converts the stored thermal energy to electrical energy, as needed or desired. The device can store energy on a large scale (e.g., on the order of megawatts or greater) and for an extended period of time (e.g., for at least 12 hours, or longer, as needed).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.