Dual Battery Control System of Lead Acid and Lithium Ferro Phosphate with Switching Technique

Abstract

The increase in electric vehicles needs to be supported by the existence of reliable energy storage devices. The battery, as an energy storage system, has its advantages and disadvantages. The combination of different battery types is chosen since the battery is one of the energy storage systems with mature technology and low life cycle cost. A solution that can be proposed to cover the weakness of each battery is the use of the Dual Battery System (DBS). In this project, a dual battery control system with a combination of Valve Regulated Lead Acid (VRLA) and Lithium Ferro Phosphate (LFP) batteries was developed using the switching method. Battery selection switching is determined by the specification and operational set point of the battery used. The experimental testing was carried out. The result of the research conducted showed that the current sensor accuracy was 83.75% and the voltage sensor accuracy was 94.25% while the current sensor precision value was 64.91% and the voltage sensor precision was 99.74%. The use of a dual battery system can save energy in a VLRA battery compare with a single VLRA battery by up to 68.62%, whereas in LFP battery by up to 29.48%. This means it gives the advantages of longer distances of traveling in electric vehicles.

Integrated Fuzzy-Logic and Triple-Loop PI-Based Management Strategy for a Lead-Acid/Lithium-Ion Hybrid Battery Energy Storage System

“…FOPID shows superior performance as compared to fuzzy logic control during HEV operation. On the other hand, [29] proposes a double switching-based control for a combination of LAB and LIB energy storage systems for EVs to explore the batteries' pros and cons. This control selects the battery to be used during different vehicle operation modes under specified conditions and limits.…”

“…The integrated solution ensures that the batteries operate within their desired limits. A contribution that enhances the performance in [29], in which the study assessed the system in terms of improving vehicle range only.…”

Series Architecture for the Reduction of the DC-DC Converter in a Hybrid Energy Storage System for Electric Vehicles

“…Numerous studies have been carried out focusing on the combination of two batteries [9][10][11][12]. A HESS composed of a lead-acid (LA) battery as the energy source and a Li-ion battery as the power source was proposed [9] to power a light EV.…”

“…It was concluded that the combination of the two batteries results in storage systems lighter than those using Li-ion batteries alone. Finally, in [12], the hybridization of an LA battery and a Li-ion battery was compared to the individual use of each battery in a hybrid vehicle. The results show that the use of a DBSS can lead to energy savings of up to 68.6% in the LA battery and up to 29.5% in the Li-ion battery, thereby prolonging the range of the vehicle.…”

Creating a LabVIEW Sub VI for the INA219 sensor for detecting extremely low-level electrical quantities

“…In that work, the measured current was between 0.002 and 0.05 mA, associated with a little amount of visible noise in the readings. Muhammad Nizam et al [8] described the usage of an ACS712 current sensor module in monitoring battery consumption. According to the research findings, the precision and accuracy of the current sensor were 64.91% and 83.75%, respectively.…”