SMA Sunny Island 4248U, Инструкция по установке и эксплуатации

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Battery Management SI4248U Manual
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Battery Management
Charging Operations used by the Sunny Island
The battery management system allows automatic operation (without user interference
required) of 3 different charging operations:
• Boost Charge:
fast charging operation with short generator run time for quick battery charge (to state of
charge of approximately 85 ... 95 %)
• Full Charge:
charging the battery full – requiring longer generator run time (absorption time) at low
generator load condition (to state of charge of approximately 92 ... 97%)
• Equalizing Charge:
equalizing all cells with long generator run time at low load condition (to state of charge
of approximately 95 ... 100 %)
Figure 1-24 Battery Management System State Transitions in Back-Up Mode
Boost Charge
V=Vcharge Boost
Equaliziation Charge
V=VchargeEqual
Floating Charge
V=VchargeFloat
Full Charge
V=VchargeFull
TcycleEqual days or
30 charge througputs
TcycleFull days or
8 charge throughputs
V > Vc
hargeBoost
for T
absorbBoost
30 %
disc
harge or
aut
o gen st
ar
t
V > VchargeFull
for TabsorbFull
V > VchargeEqual
for TabsorbEqual
TcycleEqual days or 16 charge throughputs