Power system of lithium battery electric motor coach and integrated control method

Abstract

The invention discloses a power system of a lithium battery electric motor coach. The power system comprises a motor parameter selection system, a transmission ratio selection system of a power trainsystem, an energy and capacity selection system of a lithium battery and a whole bus power system; the motor parameter selection system comprises a system for determining continuous power of a motor and a system for determining peak power parameters of the motor; a low-speed constant-torque and high-speed constant-power working mode can be realized through the motor parameter selection system; stepless speed regulation is easy to realize; the requirements of the highest vehicle speed and the maximum climbing degree are met; the performance of the electric vehicle can be effectively exerted; the dynamic property and the driving range of the electric vehicle can be guaranteed; sufficient power can be kept in the vehicle; the nonlinearity and the coupling degree of the vehicle are reduced through hierarchical analysis; the total longitudinal force, the total lateral force and the total yawing moment required by the vehicle body are solved through inverse dynamics of the vehicle; the driving intention is achieved; and the riding comfort of passengers is better.

Description

technical field [0001] The invention belongs to the technical field of electric passenger cars, and in particular relates to a power system of a lithium battery electric passenger car. At the same time, the invention also relates to an integrated control method of the power system of the lithium battery electric bus. Background technique [0002] With the rapid growth of car ownership and the gradual saturation of road traffic capacity, road congestion, traffic accidents, environmental pollution, energy waste and other phenomena are becoming more and more serious around the world. How to effectively improve automobile safety performance, purify the environment, and reduce road traffic accidents has become an important issue faced by governments and scientific research institutions all over the world. Pure electric vehicles have the following advantages: ① Zero emissions. Pure electric vehicles use electric energy, no exhaust gas is emitted during driving, and they do not p...

AI Technical Summary

Problems solved by technology

[0003] However, due to the design reasons of the traditional electric bus, the setting of the motor parameters and the transmission ratio of the drive train is unreasonable, resulting in poor transmission effect, making it difficult to effectively exert the power of the electric vehicle, and the selection and setting of the battery energy and capacity are unreasonable, making it difficult to fully develop The energy of the battery, so it is necessary to design a power system and an integrated control method for a lithium battery electric bus

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