Drivetrain for a motor vehicle

A drivetrain for a motor vehicle, having:

• a first electric machine for providing drive power, wherein the first electric machine is connected to an electrical energy store;
• a differential which can distribute drive power to two driven wheels or axles of the motor vehicle;
• a first transmission arrangement which connects the first electric machine to the differential;
• an internal combustion engine;
• a second electric machine which is coupled to the internal combustion engine in order to charge the electrical energy store in a generator mode;
• and
• a second transmission arrangement which connects the internal combustion engine to the differential;
• wherein the second transmission arrangement has a first gear stage and a second gear stage which can be alternately engaged, for the transmission of drive power from the internal combustion engine to the differential, by means of a clutch arrangement, and transmission ratios of the first and the second gear stages are selected such that driving of the vehicle by means of the internal combustion engine within intended parameters is only possible at vehicle speeds greater than 30 km/h;
• and
• wherein the clutch arrangement has a first clutch and a second clutch, and at least one of the first clutch and the second clutch is in the form of a power shift clutch which can be used for starting the vehicle by means of the internal combustion engine in the event of a failure of the first electric machine.

A drivetrain for a motor vehicle, having:

• a first electric machine for providing drive power, wherein the first electric machine is connected to an electrical energy store;
• a differential which can distribute drive power to two driven wheels or axles of the motor vehicle;
• a first transmission arrangement which connects the first electric machine to the differential;
• an internal combustion engine;
• a second electric machine which is coupled to the internal combustion engine in order to charge the electrical energy store in a generator mode;
• and
• a second transmission arrangement which connects the internal combustion engine to the differential and comprises a clutch arrangement;
• a starting and separating clutch which is arranged between the internal combustion engine and the clutch arrangement;
• wherein the second transmission arrangement has a first gear stage and a second gear stage which can be alternately engaged, for the transmission of drive power from the internal combustion engine to the differential, by means of the clutch arrangement, and transmission ratios of the first and the second gear stages are selected such that driving of the vehicle by means of the internal combustion engine within intended parameters is only possible at vehicle speeds greater than 30 km/h;
• wherein the clutch arrangement has a first positive locking shift clutch and a second positive locking shift clutch;
• and
• wherein the starting and separating clutch can be used for starting the vehicle by means of the internal combustion engine in the event of a failure of the first electric machine.