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Charge measurement circuit for electric vehicle batteries

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2 Author(s)
Wang, X. ; H Power Corp., Monroe, NC, USA ; Stuart, T.

Calculating the state of charge (SOC) of an electric vehicle (EV) battery is an inherently error prone process that depends on several variables. However, the accuracy of the required charge flow measurements can be greatly improved by using a voltage to frequency (V/F) converter in conjunction with a digital counter to integrate the measured battery current.

Published in:

Aerospace and Electronic Systems, IEEE Transactions on  (Volume:38 ,  Issue: 4 )