An electrified powertrain for a vehicle includes a battery system configured to switch individual battery modules between series, parallel, and bypassed connections, thereby eliminating the need for a DC-DC converter. The battery system is also configured to generate (via a set of drive switches) AC voltages for an electric motor, thereby eliminating the need for an inverter. Control methods for the electrified powertrain, which could be implemented in a controller of the vehicle, include controlling the switches of the battery system to maintain a constant desired output voltage during both discharging and recharging. The control methods also include controlling the series, parallel, and/or bypass switches of the battery system to bypass malfunctioning battery modules and/or to decrease the output voltage of the battery system below a voltage threshold that requires electrical isolation.


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    Title :

    Dynamic battery system voltage control through mixed dynamic series and parallel cell connections


    Contributors:

    Publication date :

    2016-11-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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