A system for starting an internal combustion engine of a hybrid vehicle includes a 12-volt battery; a 48-volt battery; a DC-DC converter in electrical communication with the 12-volt battery and with the 48-volt battery; and an electric machine in electrical communication with the 48-volt battery. The electric machine is mechanically connected to an engine. In a first initial or cold start mode of operation, the DC-DC converter receives voltage from the 12-volt battery, boosts the voltage to a voltage of about 48 volts, with 48-volt power being applied to the electric machine for activating the electric machine, causing the electric machine to start the engine. In a second mode of operation, the electric machine receives 48 volt power, from the 48-volt battery alone, for activating the electric machine, causing the electric machine to start the engine.


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    Title :

    COLD 48-VOLT ENGINE START USING 12-VOLT BATTERY


    Contributors:

    Publication date :

    2020-03-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen



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