The invention relates to a method and a system for the battery management of an on-board electrical system battery (40) of a hybrid motor vehicle (10), comprising an internal combustion engine (20) and at least one electric machine (30), and also of an exhaust gas aftertreatment device (21) comprising at least one electrically heatable catalytic converter (22), wherein the electric machine (30) can be operated in a generator mode for charging the on-board electrical system battery (40). The current charging level (SOC_curr) of the on-board electrical system battery (40) is continuously monitored and held at a required charging level (SOC_req) by means of the electric machine (30) in such a way that electrical heating of the catalytic converter (22) in a manner fed by the on-board electrical system battery (40) at an activation temperature is reliably ensured in the case of subsequent cold-starting of the internal combustion engine (20). Here, the required charging level (SOC_req) of the on-board electrical system battery (40) is continuously determined during operation, depending on the state of ageing (SOH_Cat, SOH_Bat) of the catalytic converter (22) and on-board electrical system battery (40) and the ambient temperature (T_exp) expected during the subsequent cold-starting.
BATTERIEMANAGEMENT-VERFAHREN UND BATTERIEMANAGEMENT-SYSTEM FÜR EINE BORDNETZ-BATTERIE EINES HYBRID-KRAFTFAHRZEUGS
BATTERY MANAGEMENT METHOD AND BATTERY MANAGEMENT SYSTEM FOR AN ON-BOARD ELECTRICAL SYSTEM BATTERY OF A HYBRID MOTOR VEHICLE
PROCÉDÉ DE GESTION DE BATTERIE ET SYSTÈME DE GESTION DE BATTERIE POUR UNE BATTERIE DE SYSTÈME ÉLECTRIQUE EMBARQUÉE DE VÉHICULE AUTOMOBILE HYBRIDE
2024-05-29
Patent
Electronic Resource
German
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL , Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein |
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