US 12,291,107 B2
Method for controlling a powertrain of an electric vehicle, data processing device, computer program, computer-readable medium, and powertrain
Anand Ganesan, Gothenburg (SE); Avanish Raj, Gothenburg (SE); Dhananjay Yadav, Gothenburg (SE); and Shemsedin Nursebo Salih, Gothenburg (SE)
Assigned to Volvo Car Corporation, Gothenburg (SE)
Filed by Volvo Car Corporation, Gothenburg (SE)
Filed on Dec. 16, 2022, as Appl. No. 18/082,627.
Claims priority of application No. 21216934 (EP), filed on Dec. 22, 2021.
Prior Publication US 2023/0191919 A1, Jun. 22, 2023
Int. Cl. B60L 15/00 (2006.01); B60L 15/20 (2006.01)
CPC B60L 15/2045 (2013.01) [B60L 2240/423 (2013.01); B60L 2240/425 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A method for controlling a powertrain of an electric vehicle, the powertrain comprising at least two electric traction machines and/or a clutch device, the method comprising:
receiving in a memory of a data processing device a torque demand signal being generated by a driver or a drive control unit;
estimating via a processor of the data processing device a future power loss within the powertrain as a function of a torque distribution between the at least two electric traction machines and/or as a function of a free rolling state of at least one of the at least two electric machines, wherein the future power loss is estimated for a drive cycle as a whole or for a prediction window that covers a portion of the drive cycle;
determining via the processor of the data processing device a torque distribution between the at least two electric traction machines and/or a free rolling state of at least one of the at least two electric machines which minimizes the future power loss;
deriving via the processor of the data processing device a torque demand signal for each of the at least two electric machines from the determined torque distribution and/or deriving a free rolling state signal for at least one of the at least two electric tractions machines and/or the clutch device; and
providing from the memory of the data processing device the torque demand signals and/or the free rolling state signal to the corresponding electric machine and/or the clutch device and operating the corresponding electric machine and/or the clutch device responsive to the torque demand signals and/or the free rolling state signal.