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About CHEEVCCHEEVC, an R&D company based in Scotland, has developed a software configurable battery which can be programmed to provide a variable DC voltage and current output at the battery terminals, a world first. CHEEVC’s patent pending new technology provides controlled access to individual cells in the battery chain allowing them to be switched on or off under software control. Besides providing variable power control, this facility allows the implementation of a range of new features previously not available within a battery. |
Our Technology | ||
The BasicsThe basic hardware enables the cells to be switched off or bypassed for short periods, so called “rest periods”, during charging and discharging cycles, providing time for the chemical transformations in the cells to stabilise. This in turn reduces the stress on the cells which enables a longer cell cycle life to be achieved. At the same time, the round trip efficiency losses during the charge-discharge cycle are also reduced. The rest periods also allow the cell voltage to be monitored in the open circuit condition, enabling a more accurate estimation of the state of charge of the battery. Implicit in the system is cyclic redundancy which provides immunity to single cell failures and also facilitates lossless cell balancing, during both charging and discharging cycles, thus enhancing the battery safety, increasing the reliability and extending the cycle life. The electronics and associated software are applicable to any type of cell chemistry or cell construction. Quiescent RecoveryChemical action in the cell cannot take place instantaneously, and reactions can therefore take between several seconds to several hours to be completed. Longer reaction times are even more noticeable in large, high capacity cells. The introduction of “rest periods” during charging and discharging allows more complete transformation of the active chemicals. |
Allowing the time for the ion transportation to be completed and the chemical reactions to stabilise, reduces the stress on the cells and allows increased cycle life or increased instantaneous charge/discharge rates. The cyclic redundancy is a process where one or many cells are bypassed, while remaining cells carry the load. The bypassed cells have rest periods but can be switched in to provide a time limited power boost. The BenefitsSoftware configuration can improve the battery through cell isolation, quiescent recovery, cyclic redundancy, lossless cell balancing and variable power output. The benefits of such optimisation can be summarised as follows: Increase in battery lifetime Increase in battery capacity Variable power control (no need for external controllers) Immunity to single cell failures Lossless cell balancing More accurate SOC estimation | |
Press Releases | ||
Press Release 30th April 2012 Network of Automotive Excellence Honour Press Release 27th Oct 2011 |
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Future upcoming events | ||
EVS Los Angeles |
May 6-8, 2012 |
Presentation |
AABC Europe Mainz |
June 18 - 22, 2012 |
Presentation |
Batteries 2012 Nice |
October 24-26 , 2012 |
Presentation* |
| * Pending confirmation | ||
Contact us |
CEO | Chairman | General Enquiries |
| Contact: Kenneth Hamilton Norton | Contact: Barrie Lawson | Contact: Gordon Drummond | |
| Phone: +447584305469 | Phone: +447880506996 | Phone: +447710780338 | |
| E-mail: kenorton@cheevc.com | E-mail: blawson@cheevc.com | E-mail: gdrummond@cheevc.com |
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All content copyright CHE_EVC 2011 © 2012 Company Address: The Boathouse, Silversands, Hawkcraig Road, Aberdour, Fife, KY3 0TZ