US 12,476,572 B2
Powertrain, control method, and hybrid electric vehicle
Yankun Xu, Xi'an (CN); Ningbo Feng, Xi'an (CN); and Xueliang Zhang, Xi'an (CN)
Assigned to Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Digital Power Technologies Co., Ltd., Shenzhen (CN)
Filed on Aug. 3, 2023, as Appl. No. 18/364,666.
Claims priority of application No. 202210989253.0 (CN), filed on Aug. 17, 2022.
Prior Publication US 2024/0128914 A1, Apr. 18, 2024
Int. Cl. H02P 27/08 (2006.01); B60L 15/00 (2006.01)
CPC H02P 27/08 (2013.01) [B60L 15/007 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A powertrain, the powertrain comprising: a motor controller unit (MCU) and a motor, the MCU comprises N bridge arms, and the motor comprises N motor windings corresponding to the N bridge arms, wherein N is greater than or equal to 2;
each of the N bridge arms comprises a first end and a second end;
the first end of each bridge arm is connected to a positive bus, the second end of each bridge arm is connected to a negative bus, and a midpoint of each bridge arm is connected to one end of one motor winding; and
the other end of each of the N motor windings is connected to one end of a power battery, and the other end of the power battery is connected to the positive bus or the negative bus;
a bus capacitor unit connected between the positive bus and the negative bus, wherein the MCU further comprises a controller, and the N bridge arms comprise at least one first bridge arm; and
the at least one first bridge arm is configured to be turned on or off based on a first pulse width modulation (PWM) signal, wherein the first PWM signal is used to enable the bus capacitor unit to charge the power battery through a motor winding connected to the at least one first bridge arm;
or the first PWM signal is used to enable the power battery to discharge through a motor winding connected to the at least one first bridge arm.