Browse Publications Technical Papers 2001-01-3344
2001-10-01

In-Vehicle and Lab Tests of State-of-Power Monitoring System for Automotive Batteries 2001-01-3344

All the electrical based systems and equipment of a vehicle depends, in last case, of a small but important device called battery. Understand and predict battery behaviour is one old target of the automotive manufacturers for different reasons like safety, comfort, fuel economy, etc… The paper will show the working-line and tests results of Lear, Seat and UB to achieve a method for monitoring the state of health and state of charge of battery life. There are some difficulties for in-vehicle battery monitoring: wide range of current levels, interference due to loads powered on, hard climatic conditions, high tolerances in battery manufacturing, among others.
Some of the methods for battery monitoring evaluated so far have been: Coulomb counting, Impedance spectroscopy, PH measuring, etc… For low cost on-line automotive applications the solution that could provide better results is based on impedance spectroscopy due to two main reasons: may be integrated into power management system of the vehicle, also optionally into the battery, and an historic profile is unnecessary for well running.
Firsts prototypes confirm initial expectations and after some studies carried out on different vehicles, such a spectrum analysis of power distribution bus, battery life cycle tests and temperature influence, shows the viability of system developed.

SAE MOBILUS

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

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 16% 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

Charging System: Design Simulation & Validation Methodology

2007-01-0784

View Details

TECHNICAL PAPER

Development of Energy Management Strategies and Analysis with Standard Drive Cycles for Fuel Cell Electric Vehicles

2012-01-1609

View Details

TECHNICAL PAPER

Assessing the Battery Cost at Which Plug-in Hybrid Medium-Duty Parcel Delivery Vehicles Become Cost-Effective

2013-01-1450

View Details

X