Optimal Thermal Management, Charging, and Eco-driving of Battery Electric Vehicles
Journal article, 2023

This paper addresses optimal battery thermal management, charging, and eco-driving of a battery electric vehicle (BEV) with the goal of improving its grid-to-meter energy efficiency. Thus, an optimization problem is formulated, aiming at finding the optimal trade-off between trip time and charging cost. The formulated problem is then transformed into a hybrid dynamical system, where the dynamics in driving and charging modes are modeled with different functions and with different state and control vectors. Moreover, to improve computational efficiency, we propose modeling the driving dynamics in a spatial domain, where decisions are made along the traveled distance. Charging dynamics are modeled in a temporal domain, where decisions are made along a normalized charging time. The actual charging time is modeled as a scalar variable that is optimized simultaneously with the optimal state and control trajectories, for both charging and driving modes. The performance of the proposed algorithm is assessed over a road with a hilly terrain, where two charging possibilities are considered along the driving route and the battery is soaked to the ambient before departure. According to the results, trip time including driving and charging times, is reduced by 44%, compared to a case without active heating/cooling of the battery.

charging

grid-to-meter energy efficiency

Energy efficiency

Resistance

Eco-driving

Batteries

Roads

Thermal management

battery thermal management

HVAC

Vehicle dynamics

hybrid dynamical system

Author

Ahad Hamednia

Chalmers, Electrical Engineering, Systems and control

Nikolce Murgovski

Chalmers, Electrical Engineering, Systems and control

Jonas Fredriksson

Chalmers, Electrical Engineering, Systems and control

Jimmy Forsman

Volvo

Mitra Pourabdollah

Volvo

Viktor Larsson

Volvo

IEEE Transactions on Vehicular Technology

0018-9545 (ISSN) 1939-9359 (eISSN)

Vol. 72 6 7265-7278

Subject Categories

Transport Systems and Logistics

Vehicle Engineering

Energy Systems

Control Engineering

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/TVT.2023.3240279

More information

Latest update

3/7/2024 9