Charge Battery While Driving, Basic Function - GF54.10-S-1002A

Model All (Light transporter)

Overview

This document contains information on:

General
Function requirements
Function
- 12 V on-board electrical system battery.
- High-voltage battery (electric vehicles).

General

Charging the battery while driving assures vehicle mobility and provides a stable supply of electrical energy for all electrical consumers. The energy management calculates the state of charge of the battery beforehand. For the charging process, it is necessary to determine the specified voltage which must be present at the terminal clamps of the battery in order to charge the battery in an optimum manner.

While driving, the battery can be charged by various measures, depending on the version of the on-board electrical system. In all cases, additional electrical energy is either generated or provided by another energy source (electric vehicles).

Function requirements

Combustion engine running or drivetrain operational.

Function

12 V on-board electrical system battery

The 12 V on-board electrical system battery is charged by one of the following measures:

Energy generation by 12 V alternator (vehicles with 12 V alternator)
Energy transfer from other energy sources (vehicles without 12 V alternator) such as, e.g. of the high-voltage battery (electric vehicles)

Vehicles without 12 V alternator:

Electric vehicles are not equipped with a 12 V alternator. On these vehicles, the necessary electrical energy for the 12 V on-board electrical system is provided by the high-voltage battery via a DC/DC converter.

High-voltage battery (electric vehicles)

The high-voltage battery is not fully charged by the energy generation of the electric machine in generator mode (recuperation), but the state of charge is primarily maintained through recuperation.

	Additional basic functions
	Charging by energy transfer, basic function		GF54.10-S-1003A
	Charging via alternator/recuperation, basic function		GF54.10-S-1004A