Two-way DC-DC converter

A DC converter, bidirectional DC technology, applied in the direction of DC power input conversion to DC power output, high-efficiency power electronic conversion, output power conversion device, etc., can solve the problem that the circuit voltage loss cannot obtain sufficient performance, and large current flows into the switching element , Increased circuit scale and other issues, to achieve the effect of simplifying the structure, shortening the driving period, and suppressing switching loss
CN1571254AInactive Publication Date: 2005-01-26HONDA MOTOR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HONDA MOTOR CO LTD
Publication Date
2005-01-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention allows DC power supply systems efficiently accommodate each other for electric power, with a simple control system with no fear of a large current flowing a switching element at turning on / off, with less switching loss.A rectification element is connected parallel to each of switching elements 4-1 to 4-4 of a low-voltage side switching part 4, while a rectification element is connected parallel to each of switching elements 5-1 to 5-4 of a high-voltage side switching part 5. By performing switching control either or both of the low-voltage side switching part 4 and the high-voltage side switching part 5 at the same time, an electric power is traded between DC power sources through a transformer 3. An LC resonance circuit 6 is provided between a high-voltage side coil 3-2 of the transformer 3 and the high-voltage side switching part 5, or between a low-voltage side coil 3-1 of the transformer 3 and the low-voltage side switching part 4, so that the current flowing a primary side and secondary side is made to be sine wave, for switching near its zero crossing point.
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Description

technical field

[0001] The invention relates to a bidirectional direct current-direct current converter, in particular to a bidirectional direct current-direct current converter capable of suppressing switching loss and simplifying a control system. Background technique

[0002] Some vehicles and the like are provided with two power supply systems including batteries having different voltage values. When the two DC power systems having different voltage values ​​are connected to each other, generally, a DC step-up circuit and a DC step-down circuit are provided in parallel between the DC power systems, and these circuits are appropriately used.

[0003] In addition, it has been proposed to use a bidirectional DC-DC converter in order to obtain a sufficient high-voltage DC voltage with a small-scale circuit when the power is mutually integrated in a DC power supply system.

[0004] For example, in JP-A-2002-165448, a bidirectional DC-DC converter is described. The bidirectio...

Claims

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