Browse Publications Technical Papers 2015-01-1199
2015-04-14

Model Development and Simulations of 12V Dual Batteries towards Design Optimization of Microhybrid Vehicles 2015-01-1199

The microhybrid electric vehicle (MHEV) has increasingly received attention since it holds promise for significant increases in fuel economy vs. traditional gasoline vehicles at a lower price point than hybrid vehicles. Passive parallel connection of the traditional 12V lead acid battery and a high power lithium ion battery has been identified as a potential architecture that will facilitate fuel economy improvements with minimal changes to the electrical network. Enabling a passive dual-battery connection requires a design match between the two batteries, including characteristics such as battery size and resistance, so that the performance can be optimized. In this work we have developed a hybrid model that couples electrochemical model of lithium ion battery (NMC-Graphite as an example) and an equivalent circuit model of lead acid battery in order to study the behavior of 12V dual-battery microhybrid architectures. We have analyzed variables that may affect the battery performance such as battery size, cutoff voltage, operating voltage and system resistance. The New European Driving Cycle (NEDC) is used to examine the 12V dual-battery architecture in order to demonstrate the tradeoffs between design factors considered in this work.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

A Simulation Based Analysis of 12V and 48V Microhybrid Systems Across Vehicle Segments and Drive Cycles

2015-01-1151

View Details

TECHNICAL PAPER

Application of an Adaptive Digital Filter for Estimation of Internal Battery Conditions

2005-01-0807

View Details

TECHNICAL PAPER

Modeling of Battery Pack Thermal System for a Plug-In Hybrid Electric Vehicle

2011-01-0666

View Details

X