Bidirectional DC-DC converter
A converter, bidirectional current technology, applied in output power conversion devices, instruments, DC power input conversion to DC power output and other directions, can solve the power unit circuit structure design complex, many discrete components, low reliability and efficiency and other problems, to achieve the effect of clear principle, good EMI performance and improved efficiency
Pending Publication Date: 2021-12-17
XIAMEN HONGFA AUTOMOTIVE ELECTRONICS
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Problems solved by technology
[0002] The bidirectional DC-DC converter is mainly used in hybrid electric vehicles and is a controller used for voltage conversion. At present, the bidirectional DC-DC converter of the prior art generally includes an MCU control module and an MCU connected to the MUC control module. Power unit, due to the complex circuit structure design of the power unit and a large number of discrete components, the overall volume is large, and the reliability and efficiency are low
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[0026] Examples, see Figure 1-Figure 6As shown, a kind of bidirectional DC-DC converter of the present invention is used to be connected between the first power supply 8 and the second power supply 9 with unequal voltages, and includes an MCU control module 1 for collecting the voltage of the first power supply 8 and The first voltage acquisition circuit 2 of the second power supply 9 and the power unit, the output of the first voltage acquisition circuit 2 is connected to the input terminal of the MCU control module 1 . The power unit includes at least two power modules 3 connected in parallel, and each power module 3 includes a multi-phase bidirectional current controller 33, a power control circuit 31, a current acquisition circuit 32 and a voltage for collecting the first power supply 8 and the second power supply 9. The second voltage acquisition circuit 34, the power control circuit 31 is connected to the current acquisition circuit 32, and the power control circuit 31 ...
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The bidirectional DC-DC converter is used for being connected between a first power supply and a second power supply, the bidirectional DC-DC converter comprises an MCU control module, a first voltage acquisition circuit and a power unit, and the output of the first voltage acquisition circuit is connected to the MCU control module; and the power unit comprises a power module or at least two power modules connected in parallel, the power module comprises a multiphase bidirectional current controller, a power control circuit, a current acquisition circuit and a second voltage acquisition circuit, the power control circuit is connected with the first power supply, the current acquisition circuit is connected with the second power supply, and the power control circuit is connected with the current acquisition circuit. The output ends of the current acquisition circuit and the second voltage acquisition circuit are respectively connected with the analog quantity acquisition end of the multiphase bidirectional current controller, the driving output end of the multiphase bidirectional current controller is connected with the input end of the power control circuit, and the enabling end and the programmable configuration end are respectively connected with the output end of the MCU control module. The circuit design is very simple, the principle is clear, discrete components are few, and the reliability is high.
Description
technical field [0001] The invention relates to the technical field of converters, in particular to a bidirectional DC-DC converter. Background technique [0002] The bidirectional DC-DC converter is mainly used in hybrid electric vehicles and is a controller used for voltage conversion. At present, the bidirectional DC-DC converter of the prior art generally includes an MCU control module and an MCU connected to the MUC control module. For the power unit, due to the complex circuit structure design of the power unit and various discrete components, the overall volume is large, and the reliability and efficiency are low. Contents of the invention [0003] The invention aims at the technical problems existing in the prior art, and provides a bidirectional DC-DC converter capable of simplifying the circuit structure of the power unit. [0004] The technical solution adopted by the present invention to solve the technical problem is: a bidirectional DC-DC converter, used to ...
Claims
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IPC IPC(8): H02M3/158H02M1/32H02M1/44H02H11/00
CPCH02M3/1584H02M1/32H02M1/44H02H11/002
Inventor 宋平李屏山詹群峰阙友桥
Owner XIAMEN HONGFA AUTOMOTIVE ELECTRONICS