J2288_199701 LIFE CYCLE TESTING OF ELECTRIC VEHICLE BATTERY MODULES

Issued

01/01/1997

Features
Issuing Committee
Scope
Content
This SAE Recommended Practice defines a standardized test method to determine the expected service life, in cycles, of electric vehicle battery modules. It is based on a set of nominal or baseline operating conditions in order to characterize the expected degradation in electrical performance as a function of life and to identify relevant failure mechanisms where possible. Accelerated aging is not included in the scope of this procedure, although the time compression resulting from continuous testing may unintentionally accelerate battery degradation unless test conditions are carefully controlled. The process used to define a test matrix of accelerated aging conditions based on failure mechanisms, and to establish statistical confidence levels for the results, is considered beyond the scope of this document.
Because the intent is to use standard testing conditions whenever possible, results from the evaluation of different technologies should be comparable. End-of-life is determined based on module capacity and power ratings. This may result in a measured cycle life different than that which would be determined based on actual capacity; however, this approach permits a battery manufacturer to make necessary tradeoffs between power and energy in establishing ratings for a battery module. This approach is considered appropriate for a mature design or production battery. It should be noted that the procedure defined in this document is functionally identical to the USABC Baseline Life Cycle Test Procedure.
Meta TagsDetails
DOI
https://doi.org/10.4271/J2288_199701
Pages
5
Citation
SAE International Recommended Practice, LIFE CYCLE TESTING OF ELECTRIC VEHICLE BATTERY MODULES, SAE Standard J2288_199701, Issued January 1997, https://doi.org/10.4271/J2288_199701.
Additional Details
Publisher
Published
Jan 1, 1997
Product Code
J2288_199701
Content Type
Recommended Practice
Status
Issued
Language
English

Revisions