Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Control Device for Dual Battery Block and Fuel Cell Hybrid Power System for Electric Vehicles

Version 1 : Received: 3 January 2024 / Approved: 9 January 2024 / Online: 9 January 2024 (11:06:27 CET)

How to cite: Armenta-Déu, C. Control Device for Dual Battery Block and Fuel Cell Hybrid Power System for Electric Vehicles. Preprints 2024, 2024010689. https://doi.org/10.20944/preprints202401.0689.v1 Armenta-Déu, C. Control Device for Dual Battery Block and Fuel Cell Hybrid Power System for Electric Vehicles. Preprints 2024, 2024010689. https://doi.org/10.20944/preprints202401.0689.v1

Abstract

This work aims to study and analyze a hybrid power system for electric vehicles consisting of a dual low and high-rate lithium battery block and a fuel cell. In this configuration, the high-rate lithium battery powers the electric vehicle in high power demand processes like acceleration mode or on an uphill road; the low-rate battery operates at a low output power range, servicing the auxiliary systems and low power loads and the fuel cell supplies energy at intermediate power demand conditions, normal driving mode, constant velocity, or flat and downhill terrain. The dual power system improves global efficiency since every power unit operates optimally depending on driving conditions. Power sharing optimizes the lithium battery performance and fuel cell capacity, minimizing the size and weight of each energy system and enlarging the driving range. A comparative study between different lithium battery configurations and fuel cell shows an efficiency improvement of 31.4% for the hybrid dual battery block and fuel cell operating in low, high, and intermediate output power ranges, respectively. The study bases on a simulation process recreating current driving conditions for electric cars in urban, peripheral, and intercity routes. An alternative solution consisting of a hybrid system, fuel cell and a high rate lithium battery produces a 29 % power gain.

Keywords

Electric Vehicle. Fuel Cell. Lithium Battery. Hybrid Power System. Energy Efficiency Improvement. Energy Reduction. Power System Management. Optimization.

Subject

Engineering, Automotive Engineering

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