Post on 23-Feb-2016
description
transcript
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CHARACTERIZING BATTERY
REJUVENATORS
Team Shock Therapy: Tim Blake, David Bankhead, Travis McMillen
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Presentation outline Background Process of Defining the Project Our Problem Definition/Goal Test Setups Procedure Design Matrix Future Work
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Background Goal of Acoustic
Research Detachment Create quieter
NAVY vehicles Use lead-acid
batteries to power their vehicles
A ship uses hundreds of batteries Example: LSV-2
Cutthroat Batteries need to
be replaced every 4 years
NAVY wants to improve battery performance
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Process of Defining the Project NAVY
Originally CCCV vs. Pulse Analyze rejuvenators Indications of health of battery
University of Idaho Navy specs not design, need design project!
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Project Definition/Goals Project Definition
Navy needs a reliable way to extend the life of their batteries.
They are considering using battery rejuvenators.
Project Goal Design a procedure/algorithm that the Navy
can use to characterize their rejuvenators.
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Test setups
RintVOC VLoaded
I
Figure 3: Internal Resistance Test Setup
Figure 2: Discharge Test SetupFigure 1: Rejuvenation Test Setup
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ProcedureDischarged
Battery
Internal Resistance Measureme
nt
Rejuvenate Battery
Internal Resistance Measureme
nt
Discharge Battery
Perform Calculations
Decision
Matrix
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Design Matrix
Compared Spec Sheets 35 Ah rating Renaissance RC-2A12-2 BatteryMinder Renaissance RC20A-12-240 Max value Min value standard
Capacity Restoration 80% 95% 65% 100% 0 1.000Internal Resistance 0.097691279 0.110684674 0.354608217 100% 0 1
Time Taken (h) 100 5.579732407 11.13221521 24 0 24 Renaissance RC-2A12-2 BatteryMinder Renaissance RC20A-12-240 Weight
Capacity Restoration 0.80 0.95 0.65 60%
Internal Resistance 10% 11% 35% 20% Legend
Time Taken (h) -3.17 0.77 0.54 20% -1 - 0.3 Terrible, do not use
0.3 - 0.7 Okay
-0.132277439 0.744766765 0.565751983 0.7-1 Great
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Future work Automated control system Verification of 2 Volt batteries Quantify Internal resistance of batteries Compare constant current constant
voltage to pulse rejuvenators First 10 min. of a rejuvenation.
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First 10 min. of Rejuv.
0 1 2 3 4 5 6 7 8 9 1011.511.611.711.811.9
1212.112.2
Rejuvenation of Used Battery #3 with Bat-teryMINDer Rejuvenator
Time (Minutes)
Volta
ge (
V)
0 1 2 3 4 5 6 7 8 9 1011.811.9
1212.112.212.312.412.512.6
Rejuvenation of Unused Battery #4 with BatteryMINDer Rejuvenator
Time (Minutes)
Volta
ge (
V)
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Conclusions Pulse rejuvenators work
BatteryMINDer works the best Most important characteristics have been
determined in characterizing a rejuvenator
Difference between two batteries pulsing in first 10 min.
Recommend pulse charging for the next charge setup
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Special Thanks to…. Acoustic Research Detachment of the
Navy Jim Klein Dr. Herb Hess Dr. Greg Donohoe Dr. Touraj Assefi
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QUESTIONS