BMW 3: Electrical connections
The high-voltage battery unit also has a signal connection, as well as the high-voltage connection.
The high-voltage battery unit is integrated in the refrigerant circuit in order for it to be cooled.
Connections of the SP41 high-voltage battery
- Venting unit
- Signal connector
- Connections for refrigerant lines
- High-voltage connection
The electrical lines (high-voltage and signal connection), as well as the refrigerant lines, can be disconnected without having to remove the high-voltage battery unit.
Low-voltage connection
There is a signal connection on the left side of the high-voltage battery unit of the G20 PHEV. The control units integrated in the high-voltage battery unit are supplied with voltage, data bus, sensor and monitoring signals via this interface.
The signal connection has the following lines:
- Voltage supply of the SME control unit with terminal 30 and terminal 31
- Terminal 30C (crash signal) for voltage supply of the electromechanical switch contactors
- Wake-up line from the Body Domain Controller (BDC)
- Input and output of the signal line for the high-voltage interlock loop
- Output (+12 V and ground) for the actuation of the combined expansion and shutoff valve as part of the refrigerant circuit
- K-CAN5.
High-voltage connection
There is a 2-pin flat high-voltage connection at the high-voltage battery unit with which the high- voltage battery unit is connected to the EME.
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Cooling system
To increase the service life of the high-voltage battery unit and obtain the
greatest possible power, it
is operated in a defined temperature range. The high-voltage battery unit is
essentially oper
Overview
G20 PHEV, system overview of climate control - Installation locations
Combined expansion and shutoff valve at the evaporator
Combined expansion and shutoff valve at the high-voltage battery u
Functions
The cooling system has 2 operating conditions, which result from its
function:
Cooling OFF
Cooling ON
Cooling OFF operating condition
The "Cooling OFF" operating condition is active when the cell
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Concept, General information, Safety information
Concept
The system can help prevent accidents involving
pedestrians and cyclists. In the event of an accident,
the system may reduce impact speed.
The system sounds a warning in the city speed
range before an imminent collision and activates
brakes independently, if needed.
General information
The
Timeshift
General information
The channel you are currently listening to is
stored in a buffer for up to an hour.
Prerequisite: the signal must be available.
The stored audio track can be played with a delay
following the live broadcast. When the memory
is full, the older tracks are overwritten. The
memory
