ACCURATE BATTERY TEMPERATURE MEASUREMENT BY COMPENSATING SELF HEATING

A method for accurately measuring a battery temperature using a temperature sensor embodied in a battery monitoring integrated circuit is disclosed. The method includes performing calibration to estimate a thermal resistance between the battery monitoring integrated circuit and a terminal of a batte...

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Bibliographische Detailangaben
Hauptverfasser:	BOEZEN, Hendrik, BÜTHKER, Henricus Cornelis Johannes, van LAMMEREN, Joop Petrus Maria, VAN DONGEN, Marijn Nicolaas
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	MEASURING MEASURING QUANTITY OF HEAT MEASURING TEMPERATURE PHYSICS TESTING THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
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Beschreibung
Zusammenfassung:	A method for accurately measuring a battery temperature using a temperature sensor embodied in a battery monitoring integrated circuit is disclosed. The method includes performing calibration to estimate a thermal resistance between the battery monitoring integrated circuit and a terminal of a battery, measuring a temperature using the temperature sensor, measuring a voltage at the terminal or at a supply pin of the battery monitoring integrated circuit while a current is being used to charge or discharge the battery, calculating a power by multiplying the voltage and the current, and calculating a self-heating temperature adjustment to the temperature by multiplying the power and the thermal resistance.