#1746 HIGH CTest: Verify NiMH shutdown capacity
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bugtracker at laptop.org
Wed Jul 4 22:52:01 EDT 2007
#1746: Verify NiMH shutdown capacity
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Reporter: jg | Owner: rsmith
Type: defect | Status: new
Priority: high | Milestone: CTest
Component: embedded controller | Version:
Resolution: | Keywords: power
Verified: 0 |
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Comment (by David.Lin):
The system will shutdown when the below two conditions happen
simultaneously.
1.voltage lower than *wBAT_LowVolt* and SOC < 14
The *wBat_LowVolt* is not a constant.
It is depend on temperature and current as following formula.
wBat_LowVolt = (temperature – 20 )/20 * (y1-y2))+y2
y1 = (-0.21xx * lbat) + 6.1xxx
y2 = (-0.24xx * lbat ) + 6.1xxx
2. voltage lower than *V10*
The *V10* is not a constant.
It is depend on temperature and current as following formula.
V10 = (temperature – 20 )/20 * (y1-y2))+y2
y1 = (-0.22xx * lbat) + 6.2xxx
y2 = (-0.25xx * lbat ) + 6.2xxx
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Ticket URL: <http://dev.laptop.org/ticket/1746#comment:1>
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