CN201274634Y - A high power switch mode power supply bridge rectifier and IGBT water-cooling board structure - Google Patents

Abstract

The utility model relates to a water cooling plate of a large power on-off power-source rectifying bridge and IGBT, the structure of which is characterized in that four rectifying bridge modules and two IGBT modules are installed together on a red copper plate, and an S-shaped waterway passage is arranged at the core of the plate. The water cooling plate overcomes the weaknesses of the prior water cooling plate that the water passage leaks water and the molding cost is too high. Within the limit space of the copper plate, the waterway is smooth, so that the heat radiation area is maximized, thereby realizing better heat radiation effect, and satisfying the performance requirements of the large power on-off power source, and improving the integral running efficiency of the power source.

Description

A high-power switching power supply rectifier bridge and IGBT water-cooled plate structure

technical field

The utility model relates to a structure of a high-power switching power supply rectifier bridge and an IGBT water cooling plate.

Background technique

There are hundreds of high-power switching power supplies (80KVA) used to power the magnets in the cooling storage ring of the Lanzhou Heavy Ion Accelerator. The common feature of the main circuit is the selection of multiple rectifier bridge modules and the output circuit form of the IGBT module. Due to the high power of the power supply, forced air cooling cannot achieve the purpose of heat dissipation, and circulating water cooling must be used. The existing circulating water cooling design method is to weld the cooling water pipes on the back of the copper plate to form a water cooling plate. Although this method is simple, the cooling effect is not ideal. Or two copper plates are made into water-cooled plates through internal milling to form water pipes and post-welding. This method is complicated and the biggest problem is that the welding surface is large. Will seep. There are also methods such as casting, which should not be adopted due to reasons such as high cost.

Contents of the invention

In order to meet the special performance requirements of the designed high-power switching power supply and facilitate chip stacking and installation in the power cabinet, the purpose of the utility model is to provide a water-cooled plate for a high-power switching power supply rectifier bridge and IGBT.

The purpose of this utility model can be achieved through the following measures:

A high-power switching power supply rectifier bridge and IGBT water-cooled board is to install 4 rectifier bridge modules and 2 IGBT modules together on the same copper board, and an "S"-shaped water channel is set in the board core.

Advantage of the utility model and the beneficial effect that produce are:

1. The utility model overcomes the defects of water seepage and high casting cost of the existing water-cooled plate water pipes. In the limited space of the copper plate, the water path is smooth, which maximizes the heat dissipation area and achieves a good heat dissipation purpose;

2. It is ideal to choose copper plate for water cooling plate, with high thermal conductivity and moderate price;

3. Such a large water cooling plate is also rare in domestic switching power supplies. This water-cooled plate has been widely used in the high-power switching power supply of the Lanzhou heavy ion accelerator cooling storage ring. The cooling effect is good, which meets the performance requirements of the high-power switching power supply and improves the overall operating efficiency of the power supply.

Description of drawings

Figure 1 is a schematic diagram of 4 rectifier bridge modules and 2 IGBT modules installed on the same water cooling plate.

Fig. 2 is a schematic diagram of an "S"-shaped water channel arranged in the water cooling plate.

Detailed ways

A high-power switching power supply rectifier bridge and IGBT water-cooled board, which is characterized in that 4 rectifier bridge modules and 2 IGBT modules are installed together on the same 25mm thick, 190mm X 990mm copper board, and the board core is set " S" shaped water channel.

Circulating water flows in from port a, passes through the "S" channel, and then flows out from port b. The waterway is smooth, the entire water-cooled plate flows circulating water, and the cooling area covered by the waterway is the largest, achieving good heat dissipation, meeting the performance requirements of high-power switching power supplies, and improving the overall operating efficiency of the power supply.

Claims (1)

1, the cooled plate of a kind of high-power switch power supply commutation bridge and IGBT is characterized in that 4 rectifier bridge modules and 2 IGBT modules are installed on the same copper plate together, and the waterway channel of serpentine is set in the plate core.

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