The present invention provides a method for controlling a charging voltage of a 12V auxiliary battery for a hybrid vehicle, which can (1) improve charging efficiency of an auxiliary battery by increasing the output voltage of a DC-DC converter during cold start when the outside air temperature is low, (2) improve the charging efficiency of the auxiliary battery by increasing or decreasing the output power of the DC-DC converter according to the state of charge of the auxiliary battery and by increasing the output voltage of the DC-DC converter when many electrical loads are turned on, and (3) allow the DC-DC converter to provide continuous power supply for charging the auxiliary battery by turning on a main switch disposed between a high voltage battery and the DC-DC converter based on a reverse power conversion operation of the DC-DC converter even in the case where the voltage of the auxiliary battery falls below 9V.


    Access

    Download


    Export, share and cite



    Title :

    Method for controlling charging voltage of 12V auxiliary battery for hybrid vehicle


    Contributors:

    Publication date :

    2020-04-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    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 / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



    METHOD FOR CONTROLLING CHARGING VOLTAGE OF 12V AUXILIARY BATTERY FOR HYBRID VEHICLE

    SONG HONG-SEOK | European Patent Office | 2020

    Free access

    Method for controlling charging voltage of 12V auxiliary battery for hybrid vehicle

    SONG HONG-SEOK | European Patent Office | 2021

    Free access

    HYBRID VEHICLE AUXILIARY BATTERY CHARGING METHOD AND ASSEMBLY

    TREHARNE WILLIAM DAVID / ABDELHAMID MAHMOUD / RHODES KEVIN JAMES | European Patent Office | 2019

    Free access

    VEHICLE AUXILIARY BATTERY CHARGING SYSTEM

    HERNANDEZ CERVANTES OSCAR / ESPIRITU SANTO RINCON ANTONIO / OCEGUEDA PEREZ LUIS ANTONIO et al. | European Patent Office | 2017

    Free access

    Vehicle auxiliary battery charging system

    HERNANDEZ CERVANTES OSCAR / ESPIRITU SANTO RINCON ANTONIO / OCEGUEDA PEREZ LUIS ANTONIO et al. | European Patent Office | 2018

    Free access