BMW 3: Power electronics in the convenience charging electronics
The power electronics for the conversion of the AC voltage from the charging socket to direct current voltage, which is required for charging the high-voltage battery unit, are housed in the convenience charging electronics. The AC voltage is supplied as a single phase. The input voltage, which can be processed by the convenience charging electronics, may be in the following range: 100 V to 240 V, 50 Hz or 60 Hz.
The power electronics module is a unidirectional AC/DC converter, i.e. a rectifier. Input and output are electrically isolated.
At the output, the convenience charging electronics supply an electronically adjustable direct current voltage or an electronically adjustable direct current flow. The specifications for the output voltage and the output current come from the function "High-voltage power management" in the EME control unit.
The values are calculated and adjusted by the EME so that the high-voltage battery unit is optimally charged and the other consumers in the G20 PHEV are supplied with sufficient electrical energy.
The convenience charging electronics is designed so it can provide a maximum electrical power of 3.7 kW on the output side.
Energy-optimized charging mode
Energy-optimized charging mode is a measure for improving charging efficiency. It involves only operating the control units required for charging mode in the on-board communications network.
All other control units on terminal 30B are not operated.
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Introduction
The function of the brake system of the G20 PHEV is to decelerate the vehicle
safely under stable
conditions. Vehicle deceleration is made up of the following elements:
Conventional hydraulic
System overview
System overview of hybrid brake system
Hydraulic braking
Signal path
Regenerative braking
High-voltage battery unit
Electric Motor Electronics (EME)
Electric motor
Drive train
Digital Moto
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Displays in the instrument cluster
Displays of operating conditions
The hybrid-specific operating states and the state of charge of the
high-voltage battery unit are
displayed in the instrument cluster and, if desired, in the Central Information
Display (CID).
The displays shown below may appear, depending on the driving situation
Removing the flat high-voltage connector
Bridge for high-voltage interlock loop
Before the high-voltage connector can be
disconnected, the bridge for the high-voltage
interlock loop must first be removed. The bridge
closes the circuit of the high-voltage interlock
loop in a connected state. The SME and EME
control units continuous
