公开(公告)号：US20240092184A1

公开(公告)日：2024-03-21

申请号：US18524970

申请日：2023-11-30

Applicant: BYD COMPANY LIMITED

Inventor： Luhui XU ,  Xiangshuai XU ,  Shaopeng REN ,  Zhiyong DU

IPC: B60L15/20

CPC classification number: B60L15/20 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/425

Abstract: A method for controlling heating of an electric drive system of a vehicle, the electric drive system includes a motor controller and a motor, and the method includes: determining that the vehicle is in a travelling state; obtaining a rotation speed value and a torque control value of a motor and obtaining a carrier instruction value of a motor controller when receiving a heating instruction; obtaining a first current instruction value based on the rotation speed value and the torque control value, and obtaining a second current instruction value based on the torque control value and the first current instruction value; adjusting a control signal of the motor controller based on at least one of the second current instruction value or a second carrier frequency; and controlling the motor to operate based on the adjusted control signal, so that the electric drive system generates heat.

公开(公告)号：US20250058678A1

公开(公告)日：2025-02-20

申请号：US18936426

申请日：2024-11-04

Applicant: BYD COMPANY LIMITED

Inventor： Luhui XU ,  Zhiyong DU ,  Shaopeng REN

IPC: B60L58/27 ,  B60L53/20 ,  H01M10/44 ,  H02J7/00 ,  H02M7/5387

Abstract: An energy processing apparatus for a battery includes an inverter, an energy storage circuit, and a controller. A first terminal of the inverter is connected to the battery. A first terminal of the energy storage circuit is connected to an external power supply device, and a second terminal of the energy storage circuit is connected to a second terminal of the inverter. The controller is connected to a third terminal of the inverter. In a first state, the controller controls the inverter to enable the energy storage circuit to be charged or discharged by the battery to self-heat the battery. In a second state, at least a part of the energy storage circuit and at least a part of the inverter form an adaptive voltage charger, and the controller controls the adaptive voltage charger to charge the battery.