Sensorless Battery Internal Temperature Estimation Using a Kalman Filter With Impedance Measurement

  title={Sensorless Battery Internal Temperature Estimation Using a Kalman Filter With Impedance Measurement},
  author={Robert R. Richardson and David A. Howey},
  journal={IEEE Transactions on Sustainable Energy},
This study presents a method of estimating battery- cell core and surface temperature using a thermal model coupled with electrical impedance measurement, rather than using direct surface temperature measurements. This is advantageous over previous methods of estimating temperature from impedance, which only estimate the average internal temperature. The performance of the method is demonstrated experimentally on a 2.3-Ah lithium-ion iron phosphate cell fitted with surface and core… 
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