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Energy Storage: Bidirectional Direct Current Converters

Search All Patents in Energy Storage: Bidirectional Direct Current Converters


Patent 10389231


Issued 2019-08-20

Apparatus And Method For Preventing Reverse Current In Dc-dc Converter Of Vehicle

An apparatus and a method for preventing a reverse current in a DC-DC converter of a vehicle including a measurement portion configured to measure an output voltage of the DC-DC converter of the vehicle; a verification portion configured to verify a difference between the output voltage and a preset reference output voltage at every preset period; and a controller configured to control a switch of a synchronous rectification circuit, which is implemented at a secondary side of a main transformer of the DC-DC converter, to be in an ON or OFF state according to the difference between the output voltage and the preset reference output voltage.


Classification


Slightly More than Average Length Specification


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2 Independent Claims

  • Independent Claim 1. An apparatus for preventing a reverse current in a direct current (DC)-DC converter of a vehicle, comprising: a measurement circuit configured to measure an outputvoltage of the DC-DC converter of the vehiclea verification circuit configured to verify a difference between the output voltage and a preset reference output voltage at every preset perioda controller configured to control a switch of asynchronous rectification circuit, which is implemented at a secondary side of a main transformer of the DC-DC converter, to be in an ON or OFF state according to the difference between the output voltage and the preset reference output voltagewhereinthe verification circuit verifies whether a value of the output voltage is less than a value that is obtained by subtracting a preset error from a value of the preset reference output voltageand the controller is configured to control the switch ofthe synchronous rectification circuit to be in an OFF state when the value of the output voltage is verified through the verification circuit to be less than the value that is obtained by subtracting the preset error from the value of the presetreference output voltage.

  • Independent Claim 7. A method for preventing a reverse current in a DC-DC converter of a vehicle, comprising: measuring an output voltage of the DC-DC converter of the vehicleverifying a difference between the output voltage and a preset reference outputvoltage at every preset periodcontrolling a switch of a synchronous rectification circuit, which is implemented at a secondary side of a main transformer of the DC-DC converter, to be in an ON or OFF state according to the difference between theoutput voltage and the preset reference output voltagewherein the verifying verifies whether a value of the output voltage is less than a value that is obtained by subtracting a preset error from a value of the preset reference output voltageandthe controlling controls the switch of the synchronous rectification circuit to be in an OFF state when the value of the output voltage is verified in the verifying to be less than the value that is obtained by subtracting the preset error from the valueof the preset reference output voltage.