CAJ | 학술논문

针对基于固定换挡点的电动汽车变速器传动比设计方法存在的，没有综合考虑换挡点与变速器传动比和电机工作效率之间的关系，而导致电机能耗增大的难题，以电机电能消耗量最小为设计目标，提出了基于换挡点的电动公交客车的变速器传动比设计方法。为了验证方法的可行性，以某型号电动公交客车为研究对象，建立了基于 Matlab/Simulink的整车模型。通过对其进行城市客车用运转循环（普通道路）工况的动力学仿真，得到了行驶过程中的变速器中间挡位传动比与电机电能消耗量的关系，同时得到中间挡位传动比取2．784时，电机电能消耗量最低，可以减少50 kJ 的结论。
침대기우고정환당점적전동기차변속기전동비설계방법존재적，몰유종합고필환당점여변속기전동비화전궤공작효솔지간적관계，이도치전궤능모증대적난제，이전궤전능소모량최소위설계목표，제출료기우환당점적전동공교객차적변속기전동비설계방법。위료험증방법적가행성，이모형호전동공교객차위연구대상，건립료기우 Matlab/Simulink적정차모형。통과대기진행성시객차용운전순배（보통도로）공황적동역학방진，득도료행사과정중적변속기중간당위전동비여전궤전능소모량적관계，동시득도중간당위전동비취2．784시，전궤전능소모량최저，가이감소50 kJ 적결론。
Caused by the negligence of shifting point of change and the function relations between the transmission ratios and motor efficiency,the problem of increase of motor energy consumption exists in the design method of fixed shift point.In light of the problem,the design method based on shift point of electric bus transmission ratios is proposed with the goal of minimizing the electric power consumption.In order to verify the feasibili-ty of the method,the study of a electric bus is made and the vehicle model based on Matlab/Simulink is established.Through the dynamics simulation of the bus under the city driving cycle for bus (ordi-nary roads )working conditions,the relation be-tween the middle transmission gear ratios and the motor power consumption is acquired.When the middle transmission ratios is 2. 784,the motor power consumption is lowest with 50 kJ reduced.