I01�High-voltage�Components
5.�High-voltage�Battery�Unit
82
•
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
Explanation
1
Connection�for�combined�expansion�and�shutoff�valve
2
Connection�for�refrigerant�intake�pipe
3
Combined�expansion�and�shutoff�valve
4
Housing�of�high-voltage�battery�unit
5
Low-voltage�connection�of�the�high-voltage�battery�unit
6
Connection�for�refrigerant�pressure�line
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.
