Low-voltage high-current switching power supply structure

Abstract

The invention discloses a low-voltage high-current switching power supply structure. The low-voltage high-current switching power supply structure comprises a transformer; two sides of the transformer are connected with a first metal heat dissipation plate and a second metal heat dissipation plate respectively; one insulating layer is arranged between the transformer and the first metal heat dissipation plate as well as between the transformer and the second metal heat dissipation plate; the outer side of the first metal heat dissipation plate is provided with an output rectifying device; the output rectifying device is separated from the transformer by a certain distance; the outer side of the second metal heat dissipation plate is provided with an input rectifying device and an inverter in an insulated manner; the input rectifying device and the inverter are separated from the transformer by a certain distance; the secondary side of the transformer is electrically connected with the output rectifying device; the output rectifying device is electrically connected with a power source peripheral through the first metal heat dissipation plate; the centre tap of the secondary side of the transformer is connected with the second metal heat dissipation plate; the primary side of the transformer is electrically connected with the inverter; and the input rectifying device is electrically connected with the power source peripheral. According to the low-voltage high-current switching power supply structure of the invention, the transformer is arranged between the two metal heat dissipation plates, heat generated by the transformer is dissipated through the metal heat dissipation plates, and therefore, a heat dissipation effect is good, and maintenance can be facilitated.

Description

【Technical field】 [0001] The invention relates to electronic components, in particular to a low-voltage high-current switching power supply structure. 【Background technique】 [0002] On January 2, 2013, the State Intellectual Property Office disclosed "a high-power synchronous rectification high-frequency switching power supply assembly structure", the patent number is 201220248264.5, the patent is characterized by circuit board integration and modularization, low loss , each part works independently, which reduces the interference of the electromagnetic field on the circuit and devices, but in the above patent, the transformer is directly connected to the circuit board, and the two are always in a high-temperature working environment, and the load is large, which is easy to burn the circuit board; at the same time, the circuit board It is installed between the conductive double-hole busbars, and it is inconvenient to disassemble. During maintenance, it is necessary to wait ...

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Problems solved by technology

[0002] On January 2, 2013, the State Intellectual Property Office disclosed "a high-power synchronous rectification high-frequency switching power supply assembly structure", the patent number is 201220248264.5, the patent is characterized by circuit board integration and modularization, low loss , each part works independently, which reduces the interference of the electromagnetic field on the circuit and devices, but in the above patent, the transformer is directly connected to the circuit board, and the two are always in a high-temperature working environment, and the load is large, which is easy to burn the circuit board; at the same time, the circuit board It is installed between the conductive double-hole busbars, and it is inconvenient to disassemble. During maintenance, it is necessary to wait for the transformer to cool down before removing it, which is not conducive to maintenance

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