Method for controlling a hybrid drivetrain and battery device in the hybrid drivetrain

Abstract

A method for controlling a hybrid drivetrain in a motor vehicle having an internal combustion engine, which has a crankshaft and an electric machine which can be operated as a motor and generator, having a rotor operatively connected to the crankshaft, having a torsional vibration damper operatively connected to the crankshaft, having a battery device for exchanging electrical energy with the electric machine, and having a control unit for controlling the battery device and the electric machine, and a corresponding battery device. To operate the electric machine with rapidly changing motor and generator operation without damaging the battery device, the electric machine is operatively connected to at least first and second electric batteries of the battery device, where at least part of the time one of the batteries is charged in the rhythm of occurring residual vibrations of the torsional vibration damper, while the other is discharged.

Dependencies are inferred from the claim text.