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EssEs Consortium Goals

The mission of the SwRI EssEs Consortium is to provide transparency in the automotive battery market as a means to advance the development of energy storage systems. This mission will be met by:

• Developing precompetitive detailed cell-level test data on currently available electrochemical storage systems across a diverse number of manufacturers and products

• Performing research to advance the testing methodologies used to benchmark batteries, making tests faster, cheaper and more significant.

Content

The program provides data from performance, abuse, life, and consistency of manufacturing tests for member-selected sets of battery cells in a private, independent, third-party laboratory format. SwRI conducts testing based on the recommended practices

The tests are selected based on their pre-competitiveness, applicability to application, and usefulness in comparing different technologies.

The proposed test sets are categorized into four main groups:

• Performance and Characterization

  • Static capacity

  • Constant power discharge

  • Hybrid pulse power (low and high current levels)

  • Self-discharge

  • Cold cranking

  • Charge sustaining energy efficiency

  • Charge depleting energy efficiency
     

• Cycle Life

  • Map-based cycle life at various DOD (depth of discharge) and current test conditions

  • Reference performance testing
    

• Abuse

  • Thermal stability

  • Overcharge

  • Over-discharge

  • Hard short circuit

  • Crush

  • Penetration

  • Thermal shock
     

• Manufacturing

  • Mass variance

  • Initial internal resistance

  • Open circuit voltage after extended storage

The full test schedule is designed to accommodate three (3) different battery type sets for life and abuse and six (6) cell types for characterization per year. The testing includes multiple cells under different configurations and repeated testing for each cell type. Cycle life and performance environmental test conditions, including temperature, and specific cell configurations, will be determined by consortium members.

Participants

The SwRI EssEs Consortium consists of commercial participants and will run for a period of 4 years with an annual renewal option. The consortium format allows for cost sharing to a level equal to the number of participants, with the benefit of proprietary data to be shared only among participants.

Deliverables and Pricing

Program deliverables include:

• Semi-annual progress review meetings

• FTP secure server database access to test data

• Monthly progress reports

• Annual reports

• Full test results for each battery type per year

For more information about the Energy Storage System Evaluation and Safety (EssEs) Consortium, please contact Bapiraju Surampudi, Ph.D., at bsurampudi@swri.org or call (210) 522-3278.

esses.swri.org

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Southwest Research Institute^® (SwRI^®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 11 technical divisions.

May 08, 2013