SUNNY ISLAND 5048 - Technical Description - Wind & Sun Ltd.
SUNNY ISLAND 5048 - Technical Description - Wind & Sun Ltd.
SUNNY ISLAND 5048 - Technical Description - Wind & Sun Ltd.
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Battery Management SMA Solar Technology AG<br />
Parallel procedures for full charge<br />
Any parallel procedures causing the generator to stop during the full charging process are<br />
not taken into account until the charging process is completed.<br />
13.4.3 Equalization Charge<br />
A battery bank consists of many individual battery cells connected in series which all behave slightly<br />
different. Over time, this results in different charge levels in the individual cells. This can lead to<br />
premature failure, initially of individual cells, and finally to failure of the entire bank.<br />
The <strong>Sun</strong>ny Island can perform an equalization charge automatically every 180 days<br />
("222.06 CycTmEqu" parameter) or every 30 nominal charge throughputs. During this process, it<br />
performs controlled overcharging of the battery bank to ensure that even the weaker cells are fully<br />
recharged. Equalization charging extends the battery service life by up to 50 %. The automatic<br />
equalization charging function can also be deactivated ("222.12 AutoEquChrgEna" parameter,<br />
activated by default) or manually started ("520.01 ChrgSelMan" parameter).<br />
Change to an equalization charge<br />
If the <strong>Sun</strong>ny Island changes to equalization charge after a specific time of boost charging<br />
or full charging has elapsed, these times are completely considered for the equalization<br />
charge.<br />
More than 1 % of the nominal battery capacity is discharged<br />
If more than 1 % of the battery's nominal capacity is discharged during an equalization<br />
charge, 50 % of the time elapsed is considered for the next constant voltage phase.<br />
External charging device<br />
If an external charger or charge controller is connected to the battery and the criteria for<br />
an equalization charge are fulfilled due to external charging, the <strong>Sun</strong>ny Island treats this<br />
as if it had performed the equalization charge itself.<br />
102 SI<strong>5048</strong>-TB-TEN110340 <strong>Technical</strong> <strong>Description</strong>