BIDIRECTIONAL ISOLATED DC-DC CONVERTER

摘要

The present disclosure discloses a bidirectional isolated DC-DC converter, which comprises two ports, two voltage and current isolated acquisition units, a processing module, two filtering-circuit units, and a bidirectional power-converting module. One of the two ports is selectively used as an input terminal of the bidirectional isolated DC-DC converter, and another of the two ports is used as an output terminal. The two voltage and current isolated acquisition units are connected with the two ports respectively to sample voltages and currents at the two ports and generate corresponding feedback signals. The processing module receives the feedback signals and outputs corresponding control signals according to the feedback signals. The bidirectional power-converting module is connected via the two voltage and current isolated acquisition units to the two ports to perform the conversion of different voltages between the two ports according to the control signals output by the processing module.

主权项

1. A bidirectional isolated DC-DC (direct current to direct current) converter, comprising:
a first port; a second port, wherein one of the first port and the second port is selectively used as an input terminal of the bidirectional isolated DC-DC converter, and another of the first port and the second port is used as an output terminal of the bidirectional isolated DC-DC converter correspondingly; a first voltage and current isolated acquisition unit, connected with the first port to sample voltages and currents at the first port and generate a corresponding feedback signal; a second voltage and current isolated acquisition unit, connected with the second port to sample voltages and currents at the second port and generate another corresponding feedback signal; a processing module, connected with the first voltage and current isolated acquisition unit and the second voltage and current isolated acquisition unit, to receive feedback signals generated by the first voltage and current isolated acquisition unit and the second voltage and current isolated acquisition unit, and output corresponding control signals according to the feedback signals; a first filtering-circuit unit, connected to the first port via the first voltage and current isolated acquisition unit; a second filtering-circuit unit, connected to the second port via the second voltage and current isolated acquisition unit; and a bidirectional power-converting module, connected with the processing module, connected to the first port via the first filtering-circuit unit and the first voltage and current isolated acquisition unit, and connected to the second port via the second filtering-circuit unit and the second voltage and current isolated acquisition unit, wherein the bidirectional power-converting module is configured to perform the conversion of different voltages between the first port and the second port according to the control signals outputted from the processing module.