36V LeadAcid Battery Cold Cranking Performance

1
36V Lead-Acid Battery Cold Cranking Performance
Testing Report Dec. 12
2000 Henry Huang Paul
Nicastri Ford Research
Laboratory
2
Objectives To verify whether a depleted 36V
lead-acid battery after a short period charging
can deliver enough power for engine cranking at
10ºC, -20ºC, or 30ºC.
3
Testing Setup . Three 12V batteries
(Odyssey PC680 16Ah) are serially connected,
and put inside of a cold chamber. . Both
chamber temperature and battery terminal
temperature are measured. . Battery voltage
and current are measured. . Cranking load is an
electrical motor with constant power control. .
Sampling rate when charging is 50 point/second,
and sampling rate when cranking is 100
points/sec.
4
Testing Procedure . Setting the battery
chamber temperature at 10ºC, -20ºC, or 30ºC .
Discharging the battery at about 1kw until the
battery terminal voltage drops to 21V .
Charging the battery at about 1kw for either 5
minutes or 10 minutes . Cranking the battery
at about 7kw for 6 seconds
5
(No Transcript)
6
(No Transcript)
7
(No Transcript)
8
(No Transcript)
9
(No Transcript)
10
(No Transcript)
11
(No Transcript)
12
(No Transcript)
13
(No Transcript)
14
(No Transcript)
15
Conclusion After 5 minutes charging, a
depleted 36V 16Ah lead-acid battery can deliver
average 6kw for 6 seconds at 30ºC.