Battery Diagnosis by Square-Current Electrochemical Impedance Spectroscopy

2020-0131-09
researcher's name
affiliation
keyword

background

● Ordinary impedance method which consists of Frequency Response Analyzer(FRA) and a tentiostat system is difficult to control potential for low internal resistance of a battery
● FRA and large potentiostat system: very expensive

summary

● Power controller in Battery Management System (BMS) can be formed only simple current veform, such as a square waveform. Applying square current input generated by power controller can measure impedance.

predominance

● Simple and cost-effective approach to measure impedance.
● Impedance measurement with high accuracy.

application/development

● Smart Grid
● EVs

material

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posted: 2020/02/06