BMW 3: Introduction
The "charging" procedure for an electric vehicle corresponds to "refuelling" a conventionally driven vehicle. Accordingly, in this chapter "charging" means:
- Charging the high-voltage battery unit during operation.
- Charging procedure via a charging cable.
As a charging cable is used, one also refers to conductive (grid-bound) charging.
Components inside and outside the vehicle are required for charging. In the vehicle a charging socket and power electronics are required for the voltage conversion. Outside of the motor vehicle, additional components are required; these are referred to as the "Electric Vehicle Supply Equipment (EVSE)" in the standards and in development. Details on the possible versions, structure and functioning of the EVSE are described in the chapter "Electric Vehicle Supply Equipment".
The voltage of the AC voltage network can be in the range of 100 V to 240 V. It is supplied to the G20 PHEV as a single phase.
For the employees in BMW Service the following important safety rules must be observed in relation to charging:
No work may be carried out at the vehicle during charging mode. The charging cable must be disconnected from the vehicle before starting work.
During the charging procedure the electric coolant pumps and the electric fan can be switched on automatically for cooling the high-voltage components.
The current repair instructions "Safety information for handling hybrid vehicles" must be observed for this purpose.
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Overview of charging options
The high-voltage battery unit of the G20 PHEV can generally only be charged
by alternating current
(AC charging) at a maximum charging power of 3.7 kW. The charging option for the
high-vol
Standard charging cable
The standard charging cable is designed for mobile use. All protection and
communication devices
of the standard charging cable are integrated in the so-called "in-cable control
box". The volume and
Charging stations
Permanent charging station
This version of the Electric Vehicle Supply Equipment must be installed
permanently owing to its size
and electrical requirements, e.g. at the house or in the customer's ga
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Overview
Button in the vehicle
Park assistance button
Ultrasound sensors
Ultrasound sensors of the PDC,
for instance in the bumpers.
Functional requirements
Ensure full functionality:
Do not cover sensors, for instance with stickers,
bicycle racks.
Keep the sensors clean and unobstructed.
Switching on/
Operating strategy
The following graphic shows the positions of the rotary valve as the coolant
temperature increases:
Switching diagram heat management module
0% - Rotary valve closed
100% - Rotary valve open
Cold start
Warm-up phase
Operating temperature
Transition from normal operation to maximum cooling req
