US 12,266,965 B2
Power battery charging method, motor control circuit, and vehicle
Changjiu Liu, Shenzhen (CN); Hua Pan, Shenzhen (CN); Ronghua Ning, Shenzhen (CN); Yang Liu, Shenzhen (CN); and Ning Yang, Shenzhen (CN)
Assigned to BYD COMPANY LIMITED, Shenzhen (CN)
Filed by BYD COMPANY LIMITED, Shenzhen (CN)
Filed on Nov. 9, 2023, as Appl. No. 18/505,826.
Application 18/505,826 is a continuation of application No. 17/416,745, granted, now 11,876,396, previously published as PCT/CN2019/125977, filed on Dec. 17, 2019.
Claims priority of application No. 201811574168.8 (CN), filed on Dec. 21, 2018.
Prior Publication US 2024/0072562 A1, Feb. 29, 2024
Int. Cl. H02J 7/00 (2006.01); H02J 7/04 (2006.01); H02P 27/08 (2006.01); B60L 15/20 (2006.01); B60L 50/51 (2019.01)
CPC H02J 7/007182 (2020.01) [H02J 7/04 (2013.01); H02P 27/08 (2013.01); B60L 15/20 (2013.01); B60L 50/51 (2019.02)] 18 Claims
OG exemplary drawing
 
1. A motor control circuit, comprising:
a first switch module,
a three-phase inverter, and
a control module,
a power supply module, the first switch module, the three-phase inverter, and a three-phase alternating current motor forming a current loop;
midpoints of three phase legs of the three-phase inverter being respectively connected to three phase coils of the three-phase alternating current motor;
the three-phase alternating current motor being configured to input or output a current by using a wire N extending from a connection point of the three phase coils;
the control module being separately connected to the three-phase inverter, the first switch module, the three-phase alternating current motor, and the power supply module;
the control module being configured to control the three-phase inverter to enable the motor control circuit to receive a voltage of the power supply module and output a direct current;
the three-phase inverter comprising three phase legs, each phase leg comprising two power switch units connected in series, and the three phase coils of the three-phase alternating current motor being separately connected to connection points of the two power switch units of the phase leg; and
the control module being configured to control the two power switch units of at least one of the three phase legs in the three-phase converter to close alternately to boost a voltage of the power supply module.