Starter circuit for motor vehicle internal combustion engine, has batteries connected in series with starter-generator for starting and in parallel for charging

摘要

The starter circuit for a motor vehicle internal combustion engine (A) has multiple batteries (1,2), a relay (3) and a starter-generator with a control circuit (5). If a starting signal is received, the control connects the batteries in series to start the motor and deliver a series voltage to the motor. When the engine is running, the batteries are connected in parallel for charging.