An over-voltage protection circuit is electrically connected to one or more batteries and to a high-voltage bus to power the electrical components of an electric vehicle. The over-voltage protection circuit is configured to produce a short-circuit path for current flowing through the high-voltage bus when the voltage across the high-voltage bus is higher than a threshold voltage. The short-circuit path significantly increases the current flowing through the high-voltage bus, which causes one or more fuses to interrupt current flow. The over-voltage protection circuit includes an energy-harvesting circuit that down-converts the voltage across the high-voltage bus to a lower voltage that can power one or more electrical components of the over-voltage protection circuit.
Over-Voltage Protection Circuit for Electric Vehicles
2024-09-26
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 |
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