mobile power sources
DESCRIPTION
Mobile Power Sources. Team 7. Introduction. Chemical Batteries Mechanical Energy Wireless Energy Butane Energy. How a Battery Works. http://videos.howstuffworks.com/science/battery-videos-playlist.htm#video-29391. Chemical Batteries. Nickel Cadmium NiCd Nickel Metal Hydride NiMH - PowerPoint PPT PresentationTRANSCRIPT
MOBILE PO
WER SOURCES
T E A M 7
INTRODUCTION• Chemical Batteries
• Mechanical Energy
• Wireless Energy
• Butane Energy
HOW A BATTERY WORKS
http://videos.howstuffworks.com/science/battery-videos-playlist.htm#video-29391
CHEMICAL BATTERIESNickel CadmiumNiCdNickel Metal HydrideNiMHLithium IonLi-IonLithium PolymerLiPo
NICKEL CADMIUMNickel oxyhydroxide for positive electrodeMetallic Cadmium for negative electrode1.2 volts per cell70-90% dischargeSelf discharge approx. 10%/monthRechargeableMemory Effect2000 cycles
NICKEL METAL HYDRIDESimilar to NiCdUses nickel oxyhydroxide for positive electrode
Hydrogen absorbing alloy for negative electrode
1.2 volts per cell66% charge/discharge efficiency1-2% per month self dischargeRechargeable500-1000 cyclesMemory Effect
LITHIUM IONNo Memory EffectLithium Ions move from negative electrode to positive electrode during discharge and back during charge
3.6 volts per cell400-1200 cycles80-90% charge/discharge efficency8-31% self discharge (temperature dependent)Lightweight
LITHIUM POLYMERStill a lithium ion battery with different
gutsLithium salt electrolyte is held in solid polymer instead of organic solvent
99.8% charge/discharge efficiency5% per month self discharge rate1000 or more cycles24-36 month durability
FUTURE MECHANICAL BATTERIES• Nanogenerators• Plastic Supercapacitor• Extending battery life
NANOGENERATORSGeorgia Institute of TechnologyDr. Zhong Lin WangSmall movements to generate powerDevice able to power LCD screens and power radio signals
Devices powered by body movement5 years
NANOGENERATORS
Zinc oxide nanowiresPeizoelectric effect5 nano-generators
http://gtresearchnews.gatech.edu/podcast/power-shirt.mov
NANOGENERATORSAdvantagesPowered by body movementsSmallNo batteries or electrical outletsDisadvantagesSensitive to moisture
PLASTIC SUPERCAPACITORPlastic supercapacitor Imperial College London & VolvoPlastic able to store electric charge
Like traditional batteryGreener
http://www.youtube.com/watch?v=jZ7A51h6cwU&feature=player_embedded
PLASTIC SUPERCAPACITORAdvantagesGreenWearableLonger lasting with little degradationSmall and conformableDisadvantagesConcept ideaNot fully tested yet
EXTENDING BATTERY LIFEPresent flash memoryBits stored as chargesSlowHigh programming voltagesFuture flash memoryUniversity of Illinois EngineersUltra low-power digital memory
EXTENDING BATTERY LIFEPhase-Change Material(PCM)Alternative to current flash memoryBit stored in resistance
Switchable Carbon nanotubeSmall sizeNanoscale contacts
EXTENDING BATTERY LIFEAdvantagesFasterNot susceptible to degradation Immune to accidental erasureLow power consumptionSmallNo batteries or outlets neededDisadvantagesCost disadvantage compared to regular flashSensitive to temperature to perform well
THE TESLA EFFECT
WHAT IS THE TESLA EFFECT?• The transmission of electrical energy
from a power source to an electrical load without interconnecting wires
• First demonstrated in 1891
HOW DOES IT WORK?Built on the principal of resonant couplingElectromagnetic field
http://singularityhub.com/2009/06/30/the-wireless-future-of-energy-tranfer/
LIMITATIONSThe size RangeEfficiencyCost
www.techberth.com/2011/04/wireless-resonant-energy/&usg
PRODUCTS OUT TODAYPowermatDuracell MyGridEnergizer Inductive Charger
THE FUTURE!• No more wires cluttering areas• No more outlets in the wall• All devices will be charged/charging
without the needing to be plugged in
BUTANE POWER CELL• Company history• Reasons for using the cell• Technology concerns• Technical information/operation• The future of the company and product
COMPANY HISTORYSilicon Power CellLilliputian Systems IncFounded by former MIT students in 2002$50 billion portable power marketRaised over $90 million in venture capital
funding
TECHNOLOGY CONCERNSWhy consider butane power cells? Incremental growth in the lithium industryTechnology Concerns Environmentally friendly Approved for aircraft Improved volumetric density Improved gravimetric energy densityCost $99 for the power cell $2 for replacement cartridges
BUTANE POWER CELL PROTOTYPE
TECHNICAL INFORMATION
Proton-Exchange Membrane vs Solid Oxide
Why the butane market is almost non-existent
Temperature!
FUTURE OF THE BUTANE POWER CELLFuture of Lilliputian Systems
Partnership with Intel to manufacture wafers
Intel’s equity stake
CONCLUSION
SOURCEShttp://news.illinois.edu/news/11/0310batteries_EricPop.htmlhttp://www.physorg.com/news/2011-03-technology-battery-life-mobile-devices.htmlhttp://gtresearchnews.gatech.edu/newsrelease/power-shirt.htmhttp://www.foxnews.com/scitech/2011/03/30/future-iphones-charged-heartbeat-experts-say/http://www.themobileindian.com/news/908_Future-perfect:-battery-less-mobile-phoneshttp://www.bit-tech.net/news/bits/2010/02/08/supercapacitor-
promises-end-to-batteries/1http://hothardware.com/News/The-Death-Of-The-Battery-Is-
Upon-Us-Plastic-Supercapacitor-Could-Recharge-Gizmos/http://www.talk2myshirt.com/blog/archives/3643http://www.lilliputiansystemsinc.com/
SOURCES CONT.Winter, M.; Brodd, J. (2004).
"What Are Batteries, Fuel Cells, and Supercapacitors?" (PDF). Chemical Review 104 (104): 4245. doi:10.1021/cr020730k. Retrieved 2010-07-25.
Toshiba (2007-12-11). "Toshiba to Launch Innovative Rechargeable Battery Business". Press release. Retrieved 2009-06-25.
http://www.powerstream.com/NiCd.htmhttp://www.powerstream.com/NiMH.htm