The invention relates to a method and a system for battery management of an on-board circuit battery (40) of a hybrid motor vehicle (10) having an internal combustion engine (20) and at least one electric machine (30) and an exhaust gas aftertreatment device (21) with at least one electrically heatable catalyst (22), wherein the electric machine (30) can be operated in a generator operating mode for charging an on-board circuit battery (40). According to the invention, a current charge level (SOCcurr) of the on-board circuit battery (40) is continuously monitored and is kept at a necessary charge level (SOCreq) by means of the electric machine (30) in such a way that the catalytic converter (22) is reliably electrically heated to an activation temperature in a manner fed by the on-board circuit battery (40) when the internal combustion engine (20) is subsequently cold-started. In this case, the necessary charge level (SOCreq) of the on-board circuit battery (40) is continuously determined during operation as a function of the aging states (SOHKat, SOHBat) of the catalyst (22) and of the on-board circuit battery (40) and of the ambient temperature (Texp) that can be expected during a subsequent cold start.

    本发明涉及用于混合动力机动车(10)的车载电路电池(40)的电池管理的一种方法和一种系统,所述混合动力机动车具有内燃机(20)和至少一个电机(30)以及带有至少一个能电加热的催化器(22)的废气后处理机构(21),其中所述电机(30)能够以用于给车载电路电池(40)充电的发电机运行模式来运行。持续地对所述车载电路电池(40)的当前的充电水平(SOC_curr)进行监控并且借助于所述电机(30)将其如此保持在必需的充电水平(SOC_req)上,从而在接下来冷起动所述内燃机(20)时可靠地保证以由所述车载电路电池(40)馈给的方式将所述催化器(22)电加热到活化温度。在此,在运行中持续地根据所述催化器(22)和车载电路电池(40)的老化状态(SOH_Kat、SOH_Bat)以及在接下来冷起动时能预料的环境温度(T_exp)来确定所述车载电路电池(40)的必需的充电水平(SOC_req)。


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    Title :

    Battery management method and battery management system for on-board circuit battery of hybrid motor vehicle


    Additional title:

    用于混合动力机动车的车载电路电池的电池管理方法和电池管理系统


    Contributors:

    Publication date :

    2024-03-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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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