Audi Q7 e-tron quattro 4M - Air Conditioning and Cooling Systems; Thermal Management and Heat Pump

74
Thermal management and heat pump
Coolant expansion tank 1
Condenser
Low-temperature cooler
Main radiator
Rear charge air cooler:
Coolant pump 2 for
thermal management
V618
Coolant expansion tank 2
Valve block
Coolant pump 2 for
thermal management
V590
High-voltage heater (PTC)
Z115
Thermal management control unit
J1024
3-phase AC drive
VX54
In-car components
The thermal management system in the AudiQ7e-tronquattro
ensures an optimal engine temperature in all operating states,
both in the conventional driveline and in the electric driveline.
It is also responsible for cooling and heating the cabin. A thermal
management system incorporates various cooling circuits for
controlling the temperature of drive components, a refrigerant
circuit for the air conditioning systenm and the requisite control-
lers.
The descriptions and overviews provided further below in this
chapter refer to a vehicle without conventional auxiliary heating.
Coolant pump for
thermal management
V620
High-pressure service connection
Coolant
switching valve 2
N633
Low-pressure service connection
Heat exchanger for heat pump operation
with refrigerant receiver
Coolant pump for
thermal management
V617
Coolant switching valve 3
N634
Coolant
switching valve 1
N632
Internal
heat exchanger
Air conditioning and cooling
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