BATTERY CELL CHARGE BALANCING

Implementations of the present disclosure involve a method and/or system for charge balancing across one or more modules or cells of a large battery system. In one embodiment to balance the modules, the battery management system may monitor the voltage output of the one or more modules of the batter...

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Bibliographische Detailangaben
Hauptverfasser:	GAYLO ANDREW, POTTS DENNIS L
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERATION PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY SYSTEMS FOR STORING ELECTRIC ENERGY TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	Implementations of the present disclosure involve a method and/or system for charge balancing across one or more modules or cells of a large battery system. In one embodiment to balance the modules, the battery management system may monitor the voltage output of the one or more modules of the battery system during recharging of the modules and compare the measured voltages to a set cutoff voltage. When one or more of the modules meets or exceeds the cutoff voltage, the battery system may activate an energy dissipating device associated with the one or more modules that meets or exceeds the cutoff voltage to reduce the voltage output from those modules below the cutoff voltage before the recharging signal is reapplied to the modules. Through multiple iterations of monitoring, charging and reducing the energy from the modules above the target, the SOC of each module becomes balanced near or at the cutoff voltage.