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.
ELECTRIC VEHICLE POWER RELAY ASSEMBLY AND DRIVING METHOD THEREFOR
STROMRELAISANORDNUNG FÜR ELEKTROFAHRZEUG UND STEUERUNGSVERFAHREN DAFÜR
ENSEMBLE RELAIS DE PUISSANCE DE VÉHICULE ÉLECTRIQUE ET SON PROCÉDÉ D'ENTRAÎNEMENT
2023-08-16
Patent
Electronic Resource
English
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
ELECTRIC VEHICLE POWER RELAY ASSEMBLY AND DRIVING METHOD THEREFOR
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