How to Predict Cold Weather Battery Performance
Assessing the impact of cold weather on battery performance
Understanding the impact of low temperatures on battery performance requires the development of a low-temperature battery model. To create a cold-weather battery model, use profiling software paired with an electronic load to draw current from the battery at the target temperature, while simultaneously using a data acquisition (DAQ) system to measure battery temperature. The software draws current from the battery and measures the battery's open circuit voltage (Voc) and internal resistance (Ri) versus the state of charge.
The software integrates the battery temperature figures into the dataset. Creating a battery model incorporating temperature gives you a reliable reference for testing device performance at cold temperatures. The profiling software interpolates Voc and Ri curves between two known data points in the model, facilitating testing at a wide variety of temperatures. Battery emulation solutions can then use these models to power your device and simulate temperature effects on the battery characteristics, instantly.
Variable-temperature battery emulation and profiling solution
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E36731A Battery Emulator and Profiler
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BV9210B PathWave BenchVue Advanced Battery Test and Emulation
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DAQ973A Data Acquisition System
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