US 12,424,961 B2
Boost charging control method, device, equipment, and storage medium
Yijin Qin, Shanghai (CN); Yulin Chen, Shanghai (CN); Weirong Yang, Shanghai (CN); Yinghao Zhang, Shanghai (CN); and Shoulei Xu, Shanghai (CN)
Assigned to ZF Friedrichshafen AG, Friedrichshafen (DE)
Filed by ZF Friedrichshafen AG, Friedrichshafen (DE)
Filed on Feb. 28, 2024, as Appl. No. 18/589,956.
Claims priority of application No. 202310182364.5 (CN), filed on Feb. 28, 2023.
Prior Publication US 2024/0297605 A1, Sep. 5, 2024
Int. Cl. H02P 27/06 (2006.01); H02J 7/00 (2006.01); H02J 7/14 (2006.01)
CPC H02P 27/06 (2013.01) [H02J 7/0063 (2013.01); H02J 7/1476 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A boost charging control method for a charging device to charge a motor drive system, the motor drive system comprising a battery, an inverter, and a motor, the inverter being used to receive direct current power stored in the battery during driving of the motor, so as to convert the received direct current power to three-phase alternating current power and output the three-phase alternating current power to the motor, the motor using the three-phase alternating current power output from the inverter to generate a torque, during boost charging, positive and negative electrodes of the charging device being respectively connected to a star point of the motor and a negative electrode of the battery, and the boost charging control method controlling a switch unit of the inverter to use windings of the motor to boost a voltage provided by the charging device, and outputting the voltage to the battery,
wherein the boost charging control method comprises:
selecting, based on an electrical angle θ of the motor, two phase windings of the motor with top two inductance strengths as working windings; and
controlling currents of the two phase windings, and setting a current of the other phase winding as zero, thereby causing the motor to generate a set torque.