BMW I01 Product Information page 95

I01￿High-voltage￿Components
6.￿Charging￿the￿High-voltage￿Battery
5 Fuel￿filler￿neck
6 -
7 Fuel￿tank
The￿Electric￿Vehicle￿Supply￿Equipment￿can￿either￿be￿integrated￿in￿the￿charging￿cable￿or￿be￿an￿element
of￿a￿fixed￿charging￿station￿(also￿called￿"wallbox").￿The￿EVSE￿establishes￿the￿connection￿to￿the￿AC
voltage￿network￿and￿serves￿for￿the￿fulfilment￿of￿requirements￿for￿electrical￿safety￿when￿charging￿the
vehicle.￿Communication￿to￿the￿vehicle￿can￿also￿be￿set￿up￿via￿the￿pilot￿line.￿As￿a￿result,￿it￿is￿possible
to￿safely￿start￿the￿charging￿procedure￿and￿exchange￿the￿charging￿parameters￿(e.g.￿maximum￿current
level)￿between￿vehicle￿and￿EVSE.￿Details￿on￿the￿possible￿versions,￿structure￿and￿functioning￿of￿the
EVSE￿are￿described￿in￿one￿of￿the￿following￿chapters.
The￿voltage￿of￿the￿AC￿voltage￿network￿can￿be￿in￿the￿range￿of￿110 V￿to￿240 V.￿It￿is￿fed￿to￿the￿vehicle
via￿a￿single-phase￿supply.￿From￿the￿AC￿voltage￿network￿side,￿in￿theory￿a￿maximum￿charging￿power￿of
P = U x I = 240 V x 32 A = 7.7 kW￿is￿possible.
max max max
Many￿of￿the￿components￿mentioned￿for￿charging￿the￿I01￿are￿standardized￿in￿terms￿of￿their￿structure
and￿functions.￿In￿European￿countries￿IEC 61851￿is￿the￿applicable￿standard.￿The￿components￿for
charging￿the￿I01￿satisfy￿charging￿mode￿2￿(connection￿to￿standard￿household￿socket￿with￿additional
pilot￿line)￿and￿charging￿mode￿3￿(connection￿to￿fixed￿wallbox￿with￿pilot￿line).
The￿standard￿for￿America￿is￿SAE J1772.￿Charge￿Level 1￿and￿2￿are￿comparable￿to￿charging
modes 2￿and￿3.￿Most￿components￿for￿charging￿the￿I01￿only￿satisfy￿both￿standards￿with￿one
technical￿version.￿A￿national-market￿or￿standard-specific￿version￿is￿required￿for￿Europe￿and
America￿only￿by￿the￿"Electric￿Vehicle￿Supply￿Equipment".
For￿the￿employees￿in￿BMW￿Service￿the￿following￿important￿safety￿rules￿must￿be￿observed￿in￿relation￿to
charging:
Refueling￿the￿vehicle￿while￿the￿high-voltage￿battery￿is￿charging￿is￿not￿permitted￿
When￿the￿charging￿cable￿is￿inserted￿do￿not￿initiate￿a￿refueling￿procedure￿and￿keep￿a￿safe￿distance￿from
highly￿flammable￿materials.￿Otherwise,￿in￿the￿event￿of￿incorrect￿connection￿or￿removal￿of￿the￿charging
cable￿there￿is￿a￿risk￿of￿personal￿injury￿or￿material￿damage￿by￿burning￿fuel￿for￿example.
While￿the￿I01￿is￿connected￿to￿the￿AC￿voltage￿network￿for￿charging,￿no￿work￿may￿be￿performed￿at￿the
high-voltage￿system.
During￿the￿charging￿procedure￿the￿electric￿coolant￿pump￿and￿the￿electric￿fan￿can￿be￿switched￿on
automatically￿for￿cooling￿the￿power￿electronics.￿This￿is￿why￿no￿work￿can￿be￿performed￿at￿the￿cooling
system￿of￿the￿electric￿motor￿and￿at￿the￿electric￿fan￿when￿a￿charging￿cable￿is￿connected￿to￿the￿I01.
Charging￿socket
Power￿electronics
High-voltage￿battery
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