Double-motor drive control device and method for electric car

Abstract

The invention provides a double-motor drive control device and method for an electric car. The double-motor drive control device for the electric car is characterized by comprising two motors and a drive control unit, wherein each motor is connected with a wheel, the drive control unit is provided with two motor ports used for distributing corresponding electric drive power to the two motors according to the working condition of the electric car, and the two motors are oppositely arranged on the left and right sides of the electric car and can output drive torque equal in magnitude and simultaneous rotation speed or output drive torque different in magnitude and nonsynchronous rotation speed. According to the double-motor drive control device, through a simple circuit connection mode, not only can the drive torque different in magnitude be provided for the two wheels to achieve differential speed when the electric car makes a turn, but the drive torque equal in magnitude and phase can be output when the electric car runs straightly without making a turn.

Description

technical field [0001] The invention belongs to the field of electric vehicles, and in particular relates to a dual-motor drive control device and method for an electric vehicle. Background technique [0002] At present, electric vehicles are favored by consumers due to their economic, environmental protection, and zero-emission advantages. Electric vehicles have become a means of transportation for travel and logistics transportation. The energy of the electric vehicle comes from the power battery, and the battery distributes and transmits electric energy to the motor through the motor controller; when the motor moves and does work according to the program set by the controller, the movement is done through the axle and differential of the electric vehicle Energy is sent to the wheels to make the electric car move. Electric vehicles have the advantages of simple structure, low operating cost, convenient maintenance, and zero emissions. However, this type of electric vehicl...

AI Technical Summary

Problems solved by technology

Electric vehicles have the advantages of simple structure, low operating cost, convenient maintenance, and zero emissions. However, this type of electric vehicle has the following disadvantages: 1. One motor drives two wheels through the rear axle. 2. The mechanical structure of the rear axle (including the differential) is complex, and the cost of the mechanical components is high; 3. It is impossible to achieve uphill anti-slip and downhill anti-slip, and it is necessary to often rely on mechanical brake brake

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