
Battery Pack Evaluation & Testing

Many battery systems have complex designs tailored to providing safe and reliable operation in the field. Exponent's significant experience in failure analysis and the evaluation of state-of-the-art system architectures provides us with the necessary insight needed to evaluate battery designs for safe and reliable operation in the field.
Typical battery performance tests include:
- Normal operation characterization
- Temperature cycle testing
- Temperature variation analysis and testing
- Service life testing
- Stress testing performed to evaluate response to a variety of stresses including:
- Electrical
- Electrical overstress/overcharge
- Electrostatic Discharge (ESD)
- Electrical over-discharge
- Electrical life cycle testing
- Environmental
- Heating including hot box and flame attack
- Altitude simulation
- High/low humidity
- Mechanical
- Steady force application
- Random and controlled vibration
- Mechanical shock including random and controlled impacts or drops
- Crush and puncture, including nail penetration
- Customized user abuse scenarios
- Vehicle accident scenarios
- UL projectile testing
- Electrical
Exponent routinely conducts testing to explore various aspects of lithium-ion battery safety including response to mechanical thermal and electrical abuse, cell thermal runaway propagation, and fire suppression. Some Exponent reports on this type of testing are available on the Portable Rechargeable Battery Association’s (PRBA) website: http://www.prba.org/prba/publications/battery_studies_and_reports/Default.ashx
Professionals
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Troy A. Hayes, Ph.D., P.E.Materials & Corrosion EngineeringPrincipal Engineer, Director of Asia OfficesMenlo Park
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Erwin K. Lau, Ph.D., P.E., CLSOElectrical Engineering & Computer SciencePrincipal EngineerMenlo Park
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John D. Loud, P.E., CFEI, CVFIElectrical Engineering & Computer SciencePrincipal EngineerMenlo Park
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Scott A. Wright, Ph.D., P.E., CFEI, CVFIElectrical Engineering & Computer SciencePrincipal EngineerMenlo Park
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Balasubramanian Pinnangudi, Ph.D., CFEIElectrical Engineering & Computer ScienceSenior Managing EngineerPhoenix
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Jeremiah Stepan, P.E., CFEIElectrical Engineering & Computer ScienceSenior Managing EngineerLos Angeles
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