Patent ID: 11870360
Assignee: HYUNDAI MOBIS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 14:
15. A bidirectional insulating DC-DC converter comprising:
a first battery and a second battery, a discharge voltage of the first battery being relatively higher than that of the second battery;
a step-down circuit configured to step down a voltage applied from the first battery and output the stepped-down voltage to the second battery; and
a step-up circuit connected in parallel to the step-down circuit and configured to step up a voltage applied from the second battery and output the stepped-up voltage to the first battery, wherein the step-down circuit includes an active clamp forward converter circuit, and the step-up circuit includes an active clamp flyback converter circuit, and
wherein the step-up circuit comprises:
a semiconductor switch element in a second voltage stage configured to alternately switch a voltage of the second battery so as to perform a function of the active clamp forward converter;
a transformer configured to step up the voltage switched by the semiconductor switch element in the second voltage stage, transfer the stepped-up voltage to a first voltage stage, and electrically insulate the second voltage stage from the first voltage stage; and
a rectifying element configured to rectify a voltage output from the transformer and transfer the rectified voltage to the first battery.