A method to characterize an electrochemical system like a battery for HEV or EV application is the measurement of the internal resistance. In the literature many different approaches to determine the parameters of a battery are described. The standard methods to diagnose the state of health of a battery system are typically based on tests with small currents, i.e. impedance spectroscopy, even though the information about the state of health is also required for systems which are used in a high-current application. The method described here is focused on the measurement of the high power response in combination with a short circuit test. The procedures described in this paper can be modified directly for the requirements of future hybrid vehicles and electric vehicles. The procedure can only be implemented in existing vehicle architecture by carrying out some modifications to it. An electronic switch as well as a current sensor has to be fitted in the on-board power supply system near the high voltage battery or starter battery.
Characterizing electrochemical systems used for highcurrent application by measuring the short circuit current and the internal resistance
Kennzeichnung elektrochemischer Systeme für Hochstromanwendungen durch Messung des Kurzschlussstromes und des Innenwiderstandes
2009
9 Seiten, 7 Bilder, 2 Tabellen, 23 Quellen
Aufsatz (Konferenz)
Datenträger
Englisch
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