BMW I01 Product Information page 103

I01￿High-voltage￿Components
6.￿Charging￿the￿High-voltage￿Battery
DC￿charging￿station
The￿DC￿charging￿stations￿form￿the￿second￿group￿of￿the￿fixed￿charging￿stations.￿In￿comparison￿to￿the
AC￿charging￿station,￿the￿AC￿voltage￿is￿already￿converted￿to￿direct￿current￿in￿the￿DC￿charging￿station.
Therefore,￿power￿electronics￿for￿the￿conversion￿of￿the￿AC￿voltage￿to￿direct￿current￿voltage￿in￿the
electric￿vehicle￿are￿not￿required.
As￿the￿weight￿of￿the￿power￿electronics￿in￿the￿DC￿charging￿station￿plays￿a￿minor￿role,￿large
transformers￿and￿a￿rectifier￿can￿be￿installed￿there￿to￿use￿the￿full￿network￿power.￿For￿this￿reason,￿DC
charging￿stations￿generally￿deliver￿a￿much￿higher￿charging￿power￿than￿AC￿charging￿stations.￿Using￿a
DC￿charging￿station￿the￿high-voltage￿battery￿can￿thus￿be￿charged￿much￿quicker.
6.2.￿AC￿charging￿with￿3.7 kW￿(Occasional￿Use￿Cable)
Although￿the￿high-voltage￿battery￿of￿the￿I01￿can￿also￿be￿partially￿charged￿by￿brake￿energy
regeneration,￿the￿"normal"￿charging￿procedure￿takes￿place￿when￿the￿I01￿is￿connected￿to￿the￿AC
voltage￿network￿of￿the￿power￿supply￿company.￿Energy￿is￿taken￿from￿the￿AC￿voltage￿network￿and￿fed￿to
the￿direct￿current￿voltage￿high-voltage￿electrical￿system￿of￿the￿I01.
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