Pure electric vehicle torque distribution coefficient analysis method and system based on python

Abstract

The invention discloses a Python-based pure electric vehicle torque distribution coefficient analysis method and system, and relates to the field of electric vehicles. The method includes: reading the external characteristic data of the front motor and the external characteristic data of the rear motor through the openpyxl module of the Python third-party library , generate each vehicle operating condition point according to the preset sampling rules; obtain the motor efficiency before the sampling point and the motor efficiency after the sampling point; through the Python third-party library numpy module, math module, scipy module and panda module, according to the motor efficiency before the sampling point and The motor efficiency after the sampling point is interpolated to obtain the motor efficiency before the non-sampling point and the motor efficiency after the non-sampling point in each vehicle operating point; the optimal torque distribution coefficient of each vehicle operating point is analyzed according to the front motor efficiency and the rear motor efficiency. The invention distributes the torque of the front and rear motors, which can ensure that the efficiency of the vehicle power system is kept optimal at all times when meeting the power requirements of the vehicle, reduces the energy consumption of the vehicle, and increases the mileage of the vehicle.

Description

technical field [0001] The invention relates to the field, in particular to a method and system for analyzing the torque distribution coefficient of a pure electric vehicle based on Python. Background technique [0002] At present, in the new energy vehicle market, pure electric vehicles are mostly driven by two-wheel drive, and four-wheel drive vehicles account for a small proportion. Compared with two-wheel drive, four-wheel drive can maximize the use of all the adhesion of the vehicle, which can significantly improve the power of the vehicle. However, due to the addition of a set of power systems to the four-wheel drive vehicle compared with the two-wheel drive vehicle, the four-wheel drive vehicle is significantly heavier than the two-wheel drive vehicle. The large weight increases the adhesion of the vehicle and also increases the vehicle resistance, which will increase accordingly. vehicle energy consumption. Vehicle energy consumption is mainly composed of overcoming...

AI Technical Summary

Problems solved by technology

At present, the distribution of motor torque between the front and rear motors of the four-wheel drive of pure electric vehicles is distributed according to a fixed ratio, which is not combined with real-time working conditions, so the optimal system cannot be achieved.

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