Extended-range electric vehicle control system and control method

Abstract

The invention provides an extended-range electric vehicle control system and control method. The extended-range electric vehicle control system is used for the extended-range electric vehicle. The extended-range electric vehicle control system comprises a mode selection unit, an energy management unit and a range extender control unit, wherein the mode selection unit outputs a pure electric driving mode, a first hybrid driving mode or a second hybrid driving mode according to a stroke input signal, a battery SOC value and a mode input signal and provides the modes to the energy management unit; the energy management unit obtains range extender output power according to the driving mode, the battery SOC value, the actual vehicle speed, the required torque and the actual power provided by the mode selection unit, and provides the range extender output power to the range extender control unit; and the range extender control unit obtains the output torque of the range extender according tothe output power of the range extender and the SOC value of the battery.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to a control system and control method for an extended-range electric vehicle. Background technique [0002] In recent years, my country's automobiles have begun to enter a period of rapid growth, and will maintain a high-speed growth trend in the next few years. In the current environment of energy shortage and increasingly stringent emission regulations, the transformation of vehicle energy is imminent. From the perspective of energy saving and emission reduction, electric vehicles (EV) are considered to be the direction of future development, but under the limitation of the development of current battery technology level, the cruising range of electric vehicles is limited. Extended Range Electric Vehicle (EREV) effectively prolongs the cruising range of EV by configuring a range extender on the traditional EV, while reducing the installed power of the battery. Therefore,...

AI Technical Summary

Problems solved by technology

These control methods only consider SOC as the control input of mode selection and power distribution, and do not consider factors such as driving conditions and driving efficiency of the vehicle, so they cannot guarantee the efficient operation of the system, and have great influence on driving performance and fuel consumption and emission performance. room for improvement

Images