Hybrid vehicle charging including during standstill or neutral gear operating states

A mild hybrid electric vehicle, comprising:

• an engine;
• a low voltage electric starter/generator motor of a belt-driven starter/generator (BSG) unit connected to a crankshaft of the engine, the electric starter/generator motor being powered by a low voltage battery system;
• a hybrid dual clutch transmission coupled to an output of the engine and having:
• a first sub-transmission associated with a first clutch and a first synchronizer;
• a second sub-transmission associated with a second clutch and a second synchronizer;
• and
• a high voltage electric traction motor rotationally coupled to the second sub-transmission, the electric traction motor electrically coupled to an AC/DC converter, a unidirectional DC/DC boost converter and a high voltage battery system;
• and
• a control system configured to control the engine, the dual clutch hybrid transmission and the electric traction motor to charge the high voltage battery system while i) the vehicle is in a standstill condition or a neutral gear state, and ii) the low voltage motor of the BSG unit is not used to charge the high voltage battery;
• wherein the first and second synchronizers are controlled by the control system to couple and decouple the respective first and second sub-transmissions to/from the driveline;
• wherein the first and second clutches are controlled by the control system to couple and decouple the respective first and second sub-transmissions to/from the engine;
• and
• wherein the electric traction motor is coupled to the second sub-transmission downstream of the second clutch and upstream of the second synchronizer.