High-power synchronous rectification high-frequency switching power supply

Abstract

The invention discloses a high-power synchronous rectification high-frequency switching power supply. The high-power synchronous rectification high-frequency switching power supply comprises a case, afirst conductive busbar, a second conductive busbar, transformers, a main control circuit, a three-phase input rectifier stack, a rectifier bridge module circuit board, a chopping module and a secondrectifier module. The first conductive busbar is positioned at the upper portion of the second conductive busbar, the first conductive busbar and the second conductive busbar are inserted in the casein parallel and in a staggered manner, one end of a conductive double-hole busbar is connected with the main control circuit, the other end of the conductive double-hole busbar extends out of the case, the transformers are fixedly arranged at the lower portion of the first conductive busbar in the extension direction of the first conductive busbar, the second rectifier module is arranged on the first conductive busbar and the transformers, and the chopping module, the three-phase input rectifier stack and the rectifier bridge module circuit board are arranged on the second conductive busbar.The switch power supply provided by the invention has the advantages of simple and reasonable arrangement of all parts, a compact structure, convenience in installation, disassembly and maintenance and good heat dissipation effect.

Description

technical field [0001] The invention relates to the technical field of power supply devices, in particular to a high-power synchronous rectification high-frequency switching power supply. Background technique [0002] At present, with the rapid development of power electronics technology, the relationship between power electronic equipment and people's work and life is becoming increasingly close, and electronic equipment cannot do without a reliable power supply. Because the high-frequency switching power supply has the advantages of small size, light weight and high efficiency compared with the traditional power frequency DC power supply, it has been widely used in high-current electrolysis, electrochemical and other occasions. [0003] At present, the known high-frequency switching power supply high-frequency transformer assembly structure is composed of a transformer, a circuit module, a Schottky tube or a rectifier diode after the transformer and a rectification part. ...

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Problems solved by technology

[0006] However, the above assembly structure of high-power synchronous rectification high-frequency switching power supply has at least the following defects: 1) Two conductive double-hole busbars are arranged in parallel, and the transformer is arranged between the two conductive double-hole busbars, thus reducing the Heat dissipation effect; 2) The transformer of the above-mentioned switching power supply is arranged between two conductive double-hole busbars, and other components are arranged on the two conductive double-hole busbars, which forms an overall sandwich structure. The frequency of maintenance is relatively high, and the disassembly of the sandwich structure is cumbersome during maintenance, so it is not convenient for maintenance work and assembly activities

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