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Lithium Ion Battery Testing White Paper

Lithium Ion Battery Testing White Paper
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Lithium Ion Battery Testing White Paper

Product catalog summary
Introduction
Lithium-ion batteries are widely used in various devices, including mobile phones, laptops, and medical equipment. The demand is significantly increasing in the hybrid/electric vehicle market, driven by economic stimulus plans and the push for renewable energy sources.

Necessity of Testing
Stringent testing is crucial for lithium-ion batteries due to their potential hazards, such as rupturing or exploding at high temperatures. Proper testing ensures safety and reliability.

Common Testing Specifications
Several standards guide the testing of lithium-ion batteries, including SAE J 2464, UL 2580, and IEC standards. These tests ensure safety and performance in various conditions.

Type of Test Procedure
Various tests are conducted to assess battery performance, including:
  • Thermal Performance Tests: Evaluate effects of temperature on performance.
  • Cold Cranking Tests: Measure power capability at low temperatures.
  • Static Capacity Tests: Assess capacity at a constant discharge rate.
  • Hybrid Pulse Power Characterization (HPPC) Tests: Determine dynamic power capability.
  • Self-Discharge Tests: Measure capacity loss over time.
  • Energy Efficiency Tests: Evaluate efficiency in power-assist modes.
  • Operating Set Point Stability Tests: Verify stable cycling conditions.
  • Cycle Life Tests: Assess device life under different energy use patterns.
  • Calendar Life Tests: Show degradation over time.
  • Reference Performance Tests: Monitor performance degradation.
  • Impedance Spectrum Measurement Tests: Verify control behavior.
  • Thermal Management Load Tests: Assess thermal behavior.
  • System-Level Combined Life Verification Tests: Validate life model under stress conditions.
  • Vibration Endurance: Test durability under high vibration.
  • Functional Tests: Validate functionality under extreme conditions.

Test Equipment Considerations
Test equipment must include environmental test chambers, safety features, and proper fixturing to ensure accurate and safe testing.

Summary
Thermotron provides tailored testing solutions to enhance the development and certification of lithium-ion batteries, ensuring improved durability, reliability, safety, and performance.
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Catalog excerpts

Lithium Ion Battery Testing White Paper-1

Environmental tests to improve durability of lithium-ion batteries Environmental test equipment considerations for reliability & safety testing

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Lithium Ion Battery Testing White Paper-2

“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 the hybrid/electric...

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Lithium Ion Battery Testing White Paper-3

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 measure...

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Lithium Ion Battery Testing White Paper-4

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 explosion...

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Lithium Ion Battery Testing White Paper-5

291 Kollen Park Drive, Holland, Michigan 49423 (616) 393-4580 thermotron.com © 2010 Thermotron Industries Contact Thermotron Industries to request permission to reuse or republish any portion of this material.

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