To accurately estimate the total weight of an electric vehicle during running thereof while suppressing cost.SOLUTION: An estimation device 10 for weight of an electric vehicle 1 driven by an electric motor 2 comprises: a calculation unit 11 which executes estimation calculation of the total weight W of the electric vehicle 1; and a control unit 12 which controls the estimation calculation performed by the calculation unit 11 during running of the electric vehicle 1. The calculation unit 11 utilizes the transmission efficiency η of a drive torque Td from the electric motor 2 to driving wheels 6 estimated by an efficiency estimation unit 14, for the estimation calculation of the total weight W. The control unit 12 interrupts the estimation calculation performed by the calculation unit 11 when a steering determination unit 13 determines that the steering angle θ of a steering 9 is equal to or larger than a prescribed angle θo, or when a braking determination unit 14 determines that a braking torque Tb is equal to or larger than a prescribed torque To.SELECTED DRAWING: Figure 1
【課題】電動車両において、コストを抑えつつ、走行中に総重量を精度よく推定する。【解決手段】電動モータ2により駆動される電動車両1の重量推定装置10は、電動車両1の総重量Wの推定演算を実行する演算部11と、電動車両1の走行中に演算部11による推定演算を制御する制御部12とを含む。演算部11は、効率推定部14により推定される、電動モータ2から駆動輪6への駆動トルクTdの伝達効率ηを、総重量Wの推定演算に利用する。制御部12は、操舵判定部13でステアリング9の操舵角θが所定角θo以上と判定された場合、または、制動判定部14で制動トルクTbが所定トルクTo以上と判定された場合に、演算部11による推定演算を中止する。【選択図】図1
ESTIMATION DEVICE FOR WEIGHT OF ELECTRIC VEHICLE
電動車両の重量推定装置
2023-03-09
Patent
Electronic Resource
Japanese
ELECTRIC VEHICLE WEIGHT ESTIMATION DEVICE AND WEIGHT ESTIMATION METHOD
European Patent Office | 2020
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