Motor drive device, control method, vehicle, and readable storage medium

Abstract

The present application discloses a motor drive device, a control method, a vehicle, and a readable storage medium. The control method includes: acquiring required heating power, required charging power, and output value of motor torque; and obtaining required heating power, required charging power, and output value of motor torque , adjust the current magnitude and direction of each phase of the three-phase motor to simultaneously control the charging process of the power supply module to the power battery, the output torque of the three-phase motor, and the three-phase inverter and the three-phase motor to flow through the three-phase inverter The heat exchange medium of at least one of the inverter or the three-phase motor is heated. The technical solution of this application realizes the collaborative control method of torque output, power battery charging and power battery heating without adding an additional boost charging module and heating module, and effectively solves the needs of vehicles that do not erect DC power supply lines throughout the entire process. It's a question of how the torque output, battery charging and heating functions work together.

Description

Technical field [0001] The present application relates to the field of motor drive technology, and more particularly to a motor drive, a control method, a vehicle, and a readable storage medium. Background technique [0002] At present, the energy crisis and environmental pollution problems are becoming more and more serious. The electric vehicle is a new type of transportation, and "zero emissions" can be achieved, and the electric vehicle has the advantages of simple structure, high energy utilization and high noise, and will be in the future. Occupy dominant. For new energy vehicles that have a DC line, electrical energy can be obtained by direct current supply line to drive the three-phase motor output torque, take into account the driving of the vehicle in a low temperature environment, so the vehicle also needs to have heating function, that is, the low temperature equipment inside the vehicle. Heating, in addition, when the power battery is low, it is necessary to charge t...

AI Technical Summary

Problems solved by technology

For new energy vehicles with DC lines, electric energy can be obtained through the DC power supply line to drive the output torque of the three-phase motor. Considering the driving of the vehicle in a low-temperature environment, the vehicle also needs to have a heating function, that is, the low-temperature equipment inside the vehicle. Heating. In addition, when the power of the power battery is low, the power battery needs to be charged. At present, the torque output process of the three-phase motor, the process of heating the internal equipment of the vehicle, and the charging process of the power battery are all performed separately. Controlled, resulting in a complex overall control strategy inside the vehicle

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