The present invention refers to a battery system with integrated balancing, comprising a plurality of battery cells (10) electrically connected in series between a first terminal (11) and a second terminal (12). An intermediate node (13) divides the plurality of battery cells (10) in a first subset (14) of battery cells (10) and a second subset (15) of battery cells (10). The battery system (100) further comprises a control unit (20) with a first supply node (21) that is interconnected with the first terminal (11) and a second supply node (22) that is interconnected with the intermediate terminal (13) and a step-down converter (30) that is connected in parallel with the plurality of battery cells (10) between the first terminal (11) and the second terminal (12). An output (31) of the step-down converter (30) is electrically connected with the intermediate node (13). The battery system (100) of the present invention allows for active balancing between the first (14) and second (15) subset of battery cells (10) by setting or controlling the duty cycle of the step-down converter (30). Preferred embodiments of the battery system (100) allow for controlled passive balancing and/or active balancing.
BATTERY SYSTEM WITH INTEGRATED BALANCING AND METHOD FOR BALANCING A BATTERY SYSTEM
BATTERIESYSTEM MIT INTEGRIERTEM AUSGLEICH UND VERFAHREN ZUM AUSGLEICH EINES BATTERIESYSTEMS
SYSTÈME DE BATTERIE AVEC ÉQUILIBRAGE INTÉGRÉ ET PROCÉDÉ D'ÉQUILIBRAGE D'UN SYSTÈME DE BATTERIE
2021-03-10
Patent
Electronic Resource
English
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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