Lithium Ion Battery Testing White Paper
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Environmental tests to improve durability of lithium-ion batteries Environmental test equipment considerations for reliability & safety testing

“If we want to reduce our dependence on oil, put Americans back to work and reassert our manufacturing sector as one of the greatest in the world, we must produce the advanced efficient vehicles of the future.” -President Barack Obama INTRODUCTION Lithium-ion batteries are used in many types of devices including over 60% of mobile phones and 90% of laptop computers. These batteries are inside iPods and iPads, as well as military and medical hardware. They are even powering pacemakers in the human body. However, the most significant growth in demand for Lithium-ion batteries is in...

TYPE OF TEST PROCEDURE Many types of tests need to be performed for each specification. Besides the vibration and functional tests, the following are typical performance tests that are required by FreedomCar. • Thermal Performance Tests show the effects of the ambient temperature environment on device performance. It uses the static capacity test, lower-current HPPC test and/or cold cranking tests at various temperatures ranging from -30°C to +52°C to characterize the performance of the technology and to see if a thermal management system is needed. • Cold Cranking Tests are intended to...

1. ENVIRONMENTAL TEST CHAMBER Several environmental tests, including resistance to moisture, thermal abuse, fire, low temperature, vibration endurance, shock tests, etc., are required to ensure that battery life cycles, performance and method of shipping are up to standards. Optimized airflow systems in test chambers provide conditioning throughout the entire workspace, minimizing gradients and improving consistency. Temperature change rate is dependent specific compressor sizes and needs to be considered based on the testing specifications selected. 2. SAFETY FEATURES Due to the risk of...

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