Disconnection of vehicle electric system using low voltage switch
AssigneeVolvo Truck Corporation
InventorMats Nyström
Life of this patent
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Abstract
A power system (100, 200) for a vehicle, the power system comprising: a hazardous voltage interlock loop (HVIL) circuit (106) configured to disconnect a high-voltage energy source (102) from a high-voltage system (104); a low-voltage energy source (108) coupled to the HVIL-circuit for supplying operational power to the HVIL-circuit; and a circuit breaker (110) operable to break a connection between the low-voltage energy source and the HVIL circuit, wherein the HVIL-circuit is configured to disconnect the high-voltage energy source from the high-voltage system if the low-voltage energy source is disconnected from the HVIL-circuit.
Claims12
A power system for a vehicle, the power system comprising:
- a hazardous voltage interlock loop (HVIL) circuit configured to disconnect a high-voltage energy source from a high-voltage system;
- a low-voltage energy source coupled to the HVIL-circuit for supplying operational power to the HVIL-circuit;
- and a circuit breaker arranged to be accessible from an outside of the vehicle and manually operable to break a connection between the low-voltage energy source and the HVIL-circuit, wherein the HVIL-circuit is configured to disconnect the high-voltage energy source from the high-voltage system if the low-voltage energy source is disconnected from the HVIL-circuit.
Dependencies are inferred from the claim text.