Patent ID: 9725001
Date: 2017-08-08
CPC Classifications: B60L,B60W,H02J,H02M,Y02T

Claim:
1. A charging device comprising: a battery adapted and configured to store DC voltage; first and second motors adapted and configured to operate as a motor or a generator; an inverter adapted and configured to operate a motor and boost a voltage supplied to a plug-in for charging; a rectifier adapted and configured to rectify an AC voltage supplied through the plug-in for charging to supply it to a neutral point of a motor; a voltage transformer adapted and configured to boost the DC voltage of the battery to supply it to the inverter and supply the voltage boosted by the inverter to supply it to the battery as a charging voltage or suppress the voltage to supply it to the battery as a charging voltage; and a charging controller adapted and configured to operate the inverter as a booster or operate the voltage transformer as a buck booster to supply the battery with a charging voltage depending on the voltage input to the neutral point of the motor through the plug-in for charging and the voltage of the battery, wherein the charging controller turns off the inverter to bypass the input voltage to the voltage transformer and operates the voltage transformer as the buck booster to suppress the input voltage, when the voltage that is input through the neutral point of the motor exceeds the battery voltage.