Electric automobile as well as power system and control method thereof

Abstract

The invention discloses an electric automobile as well as a power system and control method thereof. The power system comprises a receiver, a motor, a motor controller, a power battery, a battery managing device and an entire vehicle controller, wherein the receiver is used for receiving a mode instruction of a user; the motor controller is connected with the motor, so as to control the motor; the power battery is used for supplying electricity for the motor; the battery managing device is connected with the power battery, so as to obtain status information of the power battery; the entire vehicle controller is connected with the receiver, and separately communicates with the motor controller and the battery managing device, so as to obtain operating parameters of the motor and the status information of the power battery; the entire vehicle controller obtains a target operating mode of the electric automobile according to the mode instruction of the user, and controls the electric automobile to be switched into the target operating mode according to the operation parameters of the motor and the status information of the power battery. The power system disclosed by the invention provides various operating modes for the user, and through regulating and controlling the output characteristics of the power battery, individualized needs of the user are met.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an electric automobile and its power system and control method. Background technique [0002] New energy vehicles, especially pure electric cars, use battery energy storage and replace the internal combustion engine drive system with an electric drive system. The power characteristics of the battery are basically unchanged, and the damage is relatively small; while the electric drive system has a large change in the energy output characteristics of the battery and a large damage during the battery life cycle and a single power consumption process. That is to say, the characteristics of the engine are basically unchanged all the time, while the characteristics of the battery are always changing during a single discharge process and the entire life cycle; but in such a change process, the exact same charge and discharge control strategy is used, which is not true. reasonable. ...

AI Technical Summary

Problems solved by technology

That is to say, the characteristics of the engine are basically unchanged all the time, while the characteristics of the battery are always changing during a single discharge process and the entire life cycle; but in such a change process, the exact same charge and discharge control strategy is used, which is not true. reasonable

[0003] The electric vehicles in the related art do not yet provide the function of fine-tuning the characteristics of electric vehicles. Even if some electric vehicles have two-speed electronic speed limit or mechanical speed change, it is only a simple change adjustment from the motor or mechanical load side. , the regulation is still very rough

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