Techniques for controlling charging of a battery of a vehicle comprise receiving, from a positive (B+) voltage sensor, a B+ voltage signal indicative of a voltage at a B+ terminal of an alternator of the vehicle, receiving, from an intelligent battery sensor (IBS), an IBS voltage signal indicative of a voltage at a positive terminal of the battery, applying high pass and low pass filters to the B+ voltage signal and the IBS voltage signals, respectively, estimating a voltage of the battery using both the filtered B+ voltage signal and the filtered IBS voltage signal, adjusting a target voltage for the battery based on the estimated battery voltage, and controlling charging of the battery using the adjusted target voltage to mitigate overcharging and undercharging of the battery.
Voltage estimation for automotive battery charging system control
2023-06-06
Patent
Elektronische Ressource
Englisch
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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