Voltage converting circuit for electric vehicles

Details Voltage converting circuit for electric vehicles Voltage converting circuit for electric vehicles

2007-06-12

2007-06-12

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Battery-fed motor systems

C318S442000, C180S065230

Reexamination Certificate

active

11391482

ABSTRACT:
A voltage converting circuit for electric vehicles that is capable of stably performing precharge control from a high voltage battery to an inverter. The voltage converting circuit includes a high voltage battery for supplying electric power to a vehicle drive motor; and an inverter, which is interposed between the high voltage battery and the vehicle drive motor and has a capacitor, for converting a direct current, supplied from the high voltage battery, to an alternating current and supplying to the vehicle drive motor. The voltage converting circuit further includes a voltage converter, connected to the high voltage battery in parallel with the inverter, for converting a voltage of the high voltage battery to a low voltage and outputting the low voltage; a contactor circuit, interposed between the high voltage battery and the inverter, for performing a process of suppressing rush current relative to the inverter when supplying electric power of the high voltage battery to the vehicle drive motor; and voltage a converter start-up enabling units and for enabling start-up of the voltage converter when a conclusion of the suppression process performed by the contactor circuit is sensed.

REFERENCES:
patent: 5717310 (1998-02-01), Sakai et al.
patent: 6828742 (2004-12-01), Suzuki et al.
patent: 6923279 (2005-08-01), Shimane et al.
patent: 6930460 (2005-08-01), Ishikawa et al.
patent: 6966803 (2005-11-01), Hara et al.
patent: 2004 120866 (2004-04-01), None

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