Eventos Anais de eventos
ENCIT 2022
19th Brazilian Congress of Thermal Sciences and Engineering
Electrothermal simulation of electric vehicles battery under driving conditions.
Submission Author:
Joaquim Manoel Gonçalves , SC
Co-Authors:
Joaquim Manoel Gonçalves, Samuel Luna de Abreu, Luciano Amaury dos Santos, ADRIANO DE ANDRADE BRESOLIN, ANDRE LUIZ FUERBACK, Daniel Godoy Costa
Presenter: Joaquim Manoel Gonçalves
doi://10.26678/ABCM.ENCIT2022.CIT22-0077
Abstract
Vehicles that use electric powertrain have become an attractive option for the decarbonization of the world energy matrix. In this scenario, in addition to the car's autonomy, the operating temperature of lithium-ion electric cells requires special attention. In general, cooling is required to remove the heat generated under running conditions, especially in hot climates and during fast charging, while in cold climates heating is required at start-up. This work presents an electrothermal model for the behavior of battery cell temperature coupled to vehicle dynamics to consider its driving conditions as in real rides or standardized test cycles. An analytical expression was obtained for the battery temperature as a function of time with the vehicle traveling in periods of constant speed for a given initial temperature. Experimental tests in chassis dynamometer for a 2013 Nissan Leaf VS vehicle at 22 °C ambient temperature, from an open-source database, were used in the identification of the model parameters. With this model identified and validated, simulation results were obtained and then presented. The systemic approach provided by the developed model ensures agility when used in supporting analysis, design, and control of battery thermal management systems for electric vehicles.
Keywords
Electric battery thermal management, Electric vehicle battery, Battery pack temperature, Electric vehicle simulation
