Remainder driving range detection method and device and vehicle

Abstract

The invention provides a remainder driving range detection method and device and a vehicle. The method comprises the following steps that the initial energy expenditure rate of the vehicle is obtained; the gear state of the vehicle and operating data of electric equipment are detected, so that a consumption rate compensation value is obtained according to the gear state and the operating data; compensation is conducted on the initial energy expenditure rate according to the consumption rate compensation value, and a final energy consumption rate of the vehicle is obtained; residual energy of abattery is obtained; a remainder driving range of the vehicle is obtained according to the final energy consumption rate and the residual energy. According to the detection method, compensation can be conducted on the energy consumption rate according to the gear state and the operating data of the electric equipment, the accuracy of the remainder driving range is increased, the reliability of the data is effectively guaranteed, and then the usability of the vehicle is improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a detection method, a detection device and a vehicle for the remaining mileage. Background technique [0002] In related technologies, the method for estimating the remaining mileage of an electric vehicle can be based on the SOC (State of Charge, battery state of charge) provided by the BMS (BATTERYMANAGEMENT SYSTEM, battery management system), battery voltage and battery rated capacity to calculate the remaining battery life. Energy, and calculate the power consumed by the vehicle according to the driving parameters of the vehicle, or calculate the energy consumption rate based on the historical driving data of the vehicle, so as to estimate the remaining mileage of the vehicle based on the remaining energy and power of the battery, or the remaining energy and consumption rate of the battery). [0003] However, unlike traditional fuel vehicles, which are directly proportion...

AI Technical Summary

Problems solved by technology

[0003] However, unlike traditional fuel vehicles, which are proportional to the remaining fuel and remaining energy, the battery SOC is not linearly related to the remaining energy of the battery, and with the aging of the battery and the temperature of the battery, the energy released by the battery will also change greatly.

In addition, the power calculated based on the current state of the vehicle fluctuates greatly, resulting in large fluctuations in the estimated remaining mileage, which cannot guarantee the reliability of the data, and although the energy consumption rate calculated based on historical driving data has a certain degree of Can reflect the basis of the future energy consumption rate, but when the vehicle energy consumption rate changes suddenly (for example, turn on or off the air conditioner, turn on or turn off the economic mode), it cannot be reflected in the remaining mileage in a short time, which will affect the driver's judgment

Therefore, the method for estimating the remaining mileage in the related art cannot accurately obtain the remaining mileage of the vehicle, which needs to be improved

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