A control method for an energy management system of a severe hybrid electric vehicle

Abstract

The invention relates to a full hybrid electric vehicle energy management system. The full hybrid electric vehicle energy management system comprises a vehicle system controller, an engine controller, a clutch controller, a motor controller, an AMT (Automated Mechanical Transmission) controller and a storage battery controller; the engine controller is connected with an engine; the clutch controller is connected with a wet type multi-plate clutch; the motor controller is connected with an ISG (Integrated Starter Generator) motor; the AMT controller is connected with a transmission; the storage battery controller is connected with a storage battery; the storage battery is connected with the ISG motor through an inverter; a controller of subsystems and the vehicle system controller are in communication. The invention also relates to a control method for the full hybrid electric vehicle energy management system. The full hybrid electric vehicle energy management system and the control method thereof can effectively reduce output torque fluctuation during the switching process of working conditions of a full hybrid electric vehicle, improve the dynamic performance and smooth performance of the integral vehicle, increase the service life of important parts of the integral vehicle and achieve stably transferred mode switch between the working conditions and torque management under the working conditions.

Description

technical field [0001] The invention belongs to the driving control technology of a hybrid electric vehicle, and in particular relates to a control method for an energy management control system of a severe hybrid electric vehicle. Background technique [0002] Compared with traditional vehicles, hybrid vehicles have added motors and batteries, and the control system is more complex. Therefore, the development of the vehicle control system has become a key technology for hybrid vehicles. At present, the research on the control of the severe hybrid system is mostly focused on the steady-state process such as energy management strategy and efficiency optimization, and there is relatively little research on the dynamic process control. Especially for a severe hybrid power system using planetary row for power coupling, the relationship between torque and speed is complicated, and the dynamic characteristics of the engine and motor are inconsistent. As a result, large torque flu...

AI Technical Summary

Problems solved by technology

At present, the research on the control of the severe hybrid system is mostly focused on the steady-state process such as energy management strategy and efficiency optimization, and there are relatively few studies on the dynamic process control.

Especially for a severe hybrid power system using planetary row for power coupling, the relationship between torque and speed is complex, and the dynamic characteristics of the engine and motor are inconsistent. If the power source and transmission system are not coordinated and controlled when the system drives the operating mode This will cause large torque fluctuations when the vehicle is switched between driving modes, which will affect the vehicle's dynamic performance, ride comfort and service life of transmission components

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