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Author Hodges, Steve ♦ Hu, Pan ♦ Meinershagen, Julia ♦ Chandra, Ranveer ♦ Ferrese, Anthony ♦ Skiani, Evangelia ♦ Dutra, Jon ♦ Priyantha, Bodhi ♦ Moscibroda, Thomas ♦ Badam, Anirudh
Source ACM Digital Library
Content type Text
Publisher Association for Computing Machinery (ACM)
File Format PDF
Language English
Abstract Different battery chemistries perform better on different axes, such as energy density, cost, peak power, recharge time, longevity, and efficiency. Mobile system designers are constrained by existing technology, and are forced to select a single chemistry that best meets their diverse needs, thereby compromising other desirable features. In this paper, we present a new hardware--software system, called Software Defined Battery (SDB), which allows system designers to integrate batteries of different chemistries. SDB exposes application programming interfaces (APIs) to the operating system, which controls the amount of charge flowing in and out of each battery, enabling it to dynamically trade one battery property for another depending on application and/or user needs. Using micro-benchmarks from our prototype SDB implementation, and through detailed simulations, we demonstrate that it is possible to combine batteries which individually excel along different axes to deliver an enhanced collective performance when compared to traditional battery packs.
Description Affiliation: Microsoft, Cambridge, U.K (Hodges, Steve) || Microsoft, Redmond, WA (Badam, Anirudh; Chandra, Ranveer; Dutra, Jon; Meinershagen, Julia; Priyantha, Bodhi) || University Massachusetts Amherst, MA (Hu, Pan) || Tesla Motors, Palo Alto, CA (Ferrese, Anthony) || Columbia University, New York, NY (Skiani, Evangelia) || Microsoft, Beijing, China (Moscibroda, Thomas)
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2005-08-01
Publisher Place New York
Journal Communications of the ACM (CACM)
Volume Number 59
Issue Number 12
Page Count 9
Starting Page 111
Ending Page 119


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Source: ACM Digital Library