The present invention relates to a battery system (100), comprising a plurality of battery cells (90) connected in series, a plurality of balancing circuits (80), each balancing circuit (80) being connected in parallel to one of the plurality of battery cells (90), and a bleed resistor (81) connected in series with a balancing switch (82). At least one balancing switch (82) is configured to be set non-conductive in response to a control signal and to be set conductive in the absence of the control signal. The invention further relates to a control unit (70) for a battery system (100), comprising a plurality of cell pins (71) configured for receiving a cell voltage of one of a plurality of battery cells (90), a plurality of depletion mode transistors (82) configured for being set non-conductive in response to a control signal and to be set conductive in the absence of the control signal and a balancing controller (60) configured to output a control signal to the gate of each of the depletion mode transistors (82). Therein, each depletion mode transistor (82) is configured to be connected in parallel with one of the plurality of battery cells (90) and in series with a bleed resistor (81).
BATTERY SYSTEM AND CONTROL UNIT FOR A BATTERY SYSTEM
BATTERIESYSTEM UND STEUEREINHEIT FÜR EIN BATTERIESYSTEM
SYSTÈME DE BATTERIE ET UNITÉ DE COMMANDE POUR UN SYSTÈME DE BATTERIE
14.06.2023
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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