关键词: 能量流；阻力分解；仿真分析；降能耗

Abstract: Energy flow analysis is an important analysis method of energy consumption of new energy vehicles. Through energy flow analysis, we can comprehensively understand the distribution of power consumption of vehicle models, quantitatively find the energy consumption difference between sample vehicles and benchmark vehicles, and determine the starting point for the most effective improvement of energy consumption level. In this paper, the energy consumption mechanism of the whole vehicle is analyzed theoretically, and the key control items of energy consumption are mined; automatic control realizes real-time collection and data processing of various energy related physical quantities, and serves as the final acceptance standard of energy consumption reduction measures. Based on the high-precision measured data, the energy flow simulation model of the whole vehicle is established and calibrated. On the one hand, it accurately locates the potential energy conservation direction, and on the other hand, it serves as the theoretical support for the early prediction of the project development, optimizing the powertrain framework, component selection and design parameters, and finding the solution most conducive to energy consumption.

Key words: Energy flow; Resistance decomposition; Simulation analysis; Reduce energy consu