To provide an electric vehicle weight estimation device and a weight estimation method capable of accurately and easily estimating the weight of an electric vehicle.SOLUTION: An electric vehicle weight estimation device includes: a torque distribution radio control part 12 for changing a torque distribution ratio of a front wheel motor 40 and a rear wheel motor 50; a traction limit value estimation part 13 for estimating traction limit values of front wheels 60 and rear wheels 70 respectively in acceleration of an electric vehicle 1; a vertical load estimation part 14 for estimating vertical loads applied to the front wheels 60 and the rear wheels 70 respectively when the electric vehicle 1 is not accelerated based on torque distribution ratios before and after the change, and the traction limit values of the front wheels and the rear wheels before and after the change of the torque distribution ratios respectively; and a vehicle weight estimation part 15 for estimating the weight of the electric vehicle 1 based on the vertical loads applied to the front wheels 60 and the rear wheels 70 when the electric vehicle 1 is not accelerated.SELECTED DRAWING: Figure 2

    【課題】電気自動車の重量を精度よく、かつ簡単に推定することができる、電気自動車の重量推定装置および重量推定方法を提供する。【解決手段】前輪モータ40と後輪モータ50とのトルク配分比を変化させるトルク配分比制御部12と、電気自動車1の加速時における前輪60および後輪70のトラクション限界値をそれぞれ推定するトラクション限界値推定部13と、変化前後のトルク配分比、並びに、トルク配分比が変化する前後それぞれにおける前輪および後輪のトラクション限界値に基づいて、電気自動車1の非加速時において前輪60および後輪70のそれぞれに掛かる垂直荷重を推定する垂直荷重推定部14と、電気自動車1の非加速時において前輪60および後輪70に掛かる垂直荷重に基づいて電気自動車1の重量を推定する車両重量推定部15と、を有する。【選択図】図2


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    Title :

    ELECTRIC VEHICLE WEIGHT ESTIMATION DEVICE AND WEIGHT ESTIMATION METHOD


    Additional title:

    電気自動車の重量推定装置および重量推定方法


    Contributors:

    Publication date :

    2020-10-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / G01G Wägen , WEIGHING



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