Power driving system architecture in hybrid vehicle and control method for power driving system architecture

Abstract

The invention relates to a power driving system architecture in a hybrid vehicle. A battery module in a motor power driving sub system is connected with a first driving motor/generator through a first motor control module; the first driving motor/generator is connected with a power coupling transmission device; an engine control module in an engine power driving sub system is connected with an engine; the generator is connected with the battery module through a second motor control module; and the engine is connected with the power coupling transmission device through the generator. The invention also relates to a method for realizing power driving control in the hybrid vehicle based on the system architecture. By adopting the power driving system architecture in the hybrid vehicle and the control method for the power driving system architecture, the system architecture is more rational, the vehicle has higher power performance, and driving is higher in flexibility and completeness; furthermore, the vehicle saves energy, is environment-friendly and has high safety coefficient; and the power driving system architecture is stable and reliable in working performance and wider in applicability range, and lays a firm foundation for popularization and application of a hybrid technology.

Description

technical field [0001] The present invention relates to the field of vehicle power drive control, in particular to the technical field of hybrid vehicle drive control, and specifically refers to a power drive system architecture and a control method for a hybrid vehicle. Background technique [0002] In modern society, with the continuous development of the automobile industry, various energy-saving and consumption-reducing technologies have been applied more and more widely. As the most prominent and practical technology in energy-saving and consumption-reducing technologies, it is the gasoline-electric hybrid technology. [0003] At present, according to the different structure of the power transmission system, hybrid electric vehicles can be divided into three types: series hybrid electric vehicles, parallel hybrid electric vehicles and hybrid hybrid electric vehicles. Among them, the serial motor is the only power source, and the energy conversion efficiency is low; the ...

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Problems solved by technology

Among them, the serial motor is the only power source, and the energy conversion efficiency is low; the change of the parallel motor is greatly affected by the vehicle operating conditions, so the emission is poor; the traditional hybrid motor can make full use of the advantages of the serial motor and the parallel motor , to ensure that the engine and electric motor basically work in the economical area. Although the economical efficiency of the vehicle is greatly improved, its structure and control are complicated, and it is difficult for the vehicle layout and flexible control.

[0004] At the same time, most electric vehicles do not consider the preheating of the battery pack at present, so that in extremely cold areas, the temperature is lower than the battery discharge temperature, so that the battery cannot be effectively discharged, and the vehicle cannot be used.

[0005] All the above problems have brought great obstacles to the popularization and application of hybrid technology in vehicles.

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