Low-voltage power supplement system of towed electric hybrid excavator and towed electric hybrid excavator

Abstract

The utility model provides a kind of low-voltage power supply system of towed electric hybrid excavator and towed electric hybrid excavator belong to circuit control technical field, the system includes: electric drive VCU, rectifier cabinet, battery and voltage conversion circuit;Electric drive VCU is used to power on after receiving the ON range signal of switch, and after receiving the STAR range signal of switch, output high voltage power-on signal to voltage conversion circuit;Rectifier cabinet is used to convert input high voltage alternating current into high voltage direct current output;Voltage conversion circuit is connected with electric drive VCU, rectifier cabinet and battery respectively, for converting high voltage direct current into low voltage direct current and outputting low voltage direct current to battery after receiving high voltage power-on signal;Battery is used to power for the starter of excavator, and starter is used to start gasoline engine after power on.The utility model can solve the technical problem that towed electric hybrid excavator cannot start gasoline engine after battery is discharged.

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