BMW I01 Product Information page 88

I01￿High-voltage￿Components
5.￿High-voltage￿Battery￿Unit
• Input￿and￿output￿of￿the￿line￿for￿the￿high-voltage￿interlock￿loop
• Output￿(+12 V￿and￿ground)￿for￿the￿activation￿of￿the￿combined￿shutoff￿and￿expansion￿valve
(without￿heat￿pump)
• PT‐CAN2
• Two￿unused￿signals￿(only￿for￿development￿purposes).
Connections￿of￿the￿high-voltage￿battery￿unit,￿right
Index
1
2
3
4
5
6
With￿the￿optional￿heat￿pump￿the￿actuating￿wires￿coming￿from￿the￿SME￿control￿unit￿for￿the￿combined
expansion￿and￿shutoff￿valve￿initially￿lead￿into￿the￿wiring￿harness.￿From￿there￿they￿are￿guided￿directly
to￿this￿valve.￿There￿are￿no￿other￿electrical￿vehicle￿components￿involved￿which￿may￿influence￿this
activation￿signal.￿With￿the￿optional￿heat￿pump￿the￿activation￿of￿the￿combined￿expansion￿and￿shutoff
valve￿is￿assumed￿by￿the￿heat￿pump￿control￿unit￿and￿not￿the￿SME￿control￿unit.￿The￿SME￿control￿unit
only￿communicates￿the￿cooling￿requirement￿for￿the￿high-voltage￿battery￿which￿is￿performed￿via￿the
IHKA￿and￿the￿heat￿pump￿control￿unit.
82
Explanation
Connection￿for￿combined￿expansion￿and￿shutoff￿valve
Connection￿for￿refrigerant￿intake￿pipe
Combined￿expansion￿and￿shutoff￿valve
Housing￿of￿high-voltage￿battery￿unit
Low-voltage￿connection￿of￿the￿high-voltage￿battery￿unit
Connection￿for￿refrigerant￿pressure￿line