How do car manufacturers estimate the range of energy consumption?

For range estimation, most of the car manufacturers use an approach based on analysis of a short history of energy consumption to predict it in the near future. In that method, it is assumed that the rate of energy consumption remains unchanged in a short prediction horizon.

What is EV range estimation?

For EV range estimation, an accurate estimation of the EV's energy consumption is vital and is therefore the purpose of this study. In this study, the energy flow is only considered inside the vehicle so, the energy flow between the grid and vehicle is out of the framework. Generally, the EV energy consumption refers to the sum of:

How eV energy consumption is calculated?

Architecture of the EV energy consumption estimation model, developed in this study, is presented in Figure 1. The consumed energy, Econs, is calculated as per unit of distance (Wh/m) derived from the battery power output Pbat 29:

What is eV energy consumption modelling?

This paper describes a study on EV energy consumption modelling. For this purpose, EV modelling is carried out using MATLAB/Simulink software based on a real EV in the market, the BMW i3. The EV model includes vehicle powertrain system and longitudinal vehicle dynamics.

What are the factors affecting the energy consumption of a vehicle?

Motor torque in Nm, motor speed in rpm and motor efficiency must be taken into account in the vehicle model too as they affect the vehicle energy consumption. The torque demand is the input of the electric machine model whereas the output torque from the motor, by considering motor and inverter efficiencies, is the output.

How can eV energy consumption & range estimation improve driving range?

New techniques are required for more accurate EV energy consumption/range estimation aiming to reduce “range anxiety” and increase the driving range. In fact, higher range can be achieved by giving more confidence to the drivers, enabling them to extend the use of their vehicle on a single charge.