A power relay assembly for an electric vehicle and a driving method thereof according to an embodiment of the present invention connect the first switching unit and the second switching unit connected in series with each other in parallel with the relay switch, and by allowing the first switching unit and the second switching unit to include semiconductor switching elements and diodes therein, not only when power is supplied from the battery to the load side, but also when charging is performed by supplying a charging current to the battery, it is possible to supply or cut off power while preventing sparks and arcs at the relay contact point. In addition, by using the current characteristics of the semiconductor switching element included in the first switching unit or the second switching unit, the current is limited by adjusting the voltage applied to the semiconductor switching element so that no more than a constant current flows during the pre-charge operation, and thus, it is possible to prevent the rapid current from flowing without installing a separate resistor.
POWER RELAY ASSEMBLY FOR AN ELECTRIC VEHICLE AND DRIVING METHOD THEREOF
LEISTUNGSRELAISANORDNUNG FÜR EIN ELEKTRISCHES FAHRZEUG UND STEUERVERFAHREN DAFÜR
ENSEMBLE DE RELAIS DE PUISSANCE POUR VÉHICULE ÉLECTRIQUE ET SON PROCÉDÉ DE COMMANDE
2020-12-02
Patent
Electronic Resource
English
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