How to Predict Cold Weather Battery Performance

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Power Analyzer and Emulator
+ Power Analyzer and Emulator
Power Analyzer and Emulator
+ Power Analyzer and Emulator

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

Variable-temperature battery emulation and profiling solution

To fully characterize a device's current drain, you must conduct tests under different battery charge levels and conditions, including temperature variations. The Keysight low-power battery emulator and profiler, coupled with Keysight battery emulation software, streamlines this process. The battery emulation solution generates precise battery models by simulating a device's current drain. Connect the software to the data acquisition system to measure and seamlessly integrate battery temperature parameters during model generation. The software can then use this data to emulate the battery and its characteristics at specific temperature levels without requiring access to temperature-controlled chambers and batteries charged to specific target charge levels.
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