Browse Publications Technical Papers 1999-01-2911
1999-08-17

Charge Management Systems for Electric and Hybrid Electric Vehicle Battery Packs – Lab Testing to Evaluate Cycle Life Improvement 1999-01-2911

Electric and hybrid electric vehicles reaching the market today utilize battery packs for on-board energy storage. Due to manufacturing, operational and environmental variations, the behavior of individual battery modules in a high voltage series-string will diverge significantly after a number of cycles. It has been proposed that the use of a battery charge management system to maintain charge balance across the modules will limit this divergence and extend the pack life.
To evaluate the benefits of battery charge management, a project was undertaken to acquire candidate charge management systems, test these systems on a high voltage series-string of battery modules, and compare the resulting cycle life of charge managed packs to a non-managed (control) pack. This paper summarizes the project results, including a description of the charge management systems tested, the test methodology used, and the results achieved.

SAE MOBILUS

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

Access SAE MOBILUS »

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

Hybrid Power Supplies of Electro-Mobiles

2007-01-1316

View Details

TECHNICAL PAPER

Battery Availability for Near-Term (1998) Electric Vehicles

911914

View Details

TECHNICAL PAPER

Pushing the Energy Limits of Lithium Ion Batteries through Fluorinated Materials

2019-01-0595

View Details

X