A vehicle power distribution system includes: a battery having a nominal voltage V2 (e.g. 24V, 48V); a vehicle electrical load having a supply voltage V1 (e.g. 12V) different than the nominal voltage; and a monolithic solid state relay (SSR) including integrated circuitry to convert the nominal voltage to the rated voltage and an output configured to selectively energize the vehicle electrical load with the rated voltage, in response to a control signal from a vehicle controller applied to an input of the relay. The relay may include a pulse-width modulation (PWM) controller 250 to provide a switching signal to a transistor 220 connected to an output filter, comprising an L-C filter, to step-down the nominal voltage of the battery to the rated voltage of the vehicle electrical load. Current sense circuitry 280 and voltage sense circuitry 282 may be connected to the PWM controller to provide over-current and over-voltage protection.
Vehicle power distribution having relay with integrated voltage converter
2017-07-19
Patent
Electronic Resource
English
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / 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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