CN114423233A - Device for insulating installation and air duct heat dissipation of power module - Google Patents

Abstract

The invention discloses a device for insulating installation of a power module and an air duct heat dissipation device, comprising a right heat dissipation air duct and a right radiator, a left heat dissipation air duct and a left radiator, and an air duct baffle; an air duct baffle is arranged in the middle of the radiator ; wherein the cooling air duct is sleeved on the outer end of its corresponding radiator to form a vertical through air duct; the outer position of the radiator is fixed with the power module, and the rear side formed by the rear side wall is fixedly installed with the power module; the bottom of the air duct Set the bottom insulating plate of the module and the module bottom plate; set the top insulating plate of the module on the top of the right cooling air duct and the left cooling air duct; the outer surface of the power module is provided with corresponding insulating plates; the cooling air duct left, the cooling air duct right, the power The module and its insulating plate form a square structure; metal panels are arranged on the outside of the square structure. The invention can protect the bare electrical leakage, prevent the occurrence of electric shock accidents, and ensure the high efficiency of heat dissipation, the reliability of insulation and the stability of dimensional accuracy.

Description

A device for insulating installation of power module and air duct heat dissipation

technical field

The invention relates to the field of insulation installation and heat dissipation of power modules in related equipment in the rail transit industry, in particular to a device for insulation installation of power modules and air duct heat dissipation.

Background technique

The power unit module is the core part of the equipment. Facing the complexity of the rail transit system and the uncertainty of the environment, when the core component fails, it is easy to cause damage to the rest of the components. In order to avoid this situation, the entire power unit needs to be insulated first, and secondly, the heat dissipation performance of the equipment must be ensured. However, the insulation treatment of many equipment is now outside the power module to deal with the insulation problem, and the way of heat dissipation is also Adding a high-power fan on the top, such insulation treatment is not reliable, and the accuracy cannot be guaranteed, because the processing of the insulating parts is slightly rougher than the metal parts, and the corrosion resistance is not as good as the metal parts, which are exposed outside the module. It is easy to age and cause equipment failure; secondly, when the top high-power fan is used for heat dissipation, the height of the cabinet becomes higher, which leads to an increase in transportation costs; secondly, the sealing performance is not very good, and the noise is louder, which is not conducive to maintenance and replacement.

SUMMARY OF THE INVENTION

1. Technical problems to be solved:

In view of the above technical problems, the present invention provides a device for insulating installation of a power module and an air duct heat dissipation device, which is a small size, light weight, and internal insulation installation structure, which is convenient for maintenance and installation, and has controllable precision for the entire equipment. The installation structure is high, and it can withstand high pressure and has an independent cooling system for heat dissipation.

2. Technical solution:

A device for insulating installation of a power module and an air duct heat dissipation, which is characterized in that it includes a right heat dissipation air duct and a right radiator, a left heat dissipation air duct and a left radiator, and an air duct baffle; wherein the right radiator and the left radiator Installed side by side and set an air duct baffle partition between them; wherein the right cooling air duct and the left cooling air duct are sleeved on the outer end of the corresponding radiator to form a vertical through air duct; A first power module is fixed in the cavity whose outer position is located in the air duct; the second power module is fixedly installed on the rear side formed by the two radiators and the air duct baffle on the rear side wall; The bottom of the duct left is provided with the module bottom insulating plate and the module bottom plate; the module bottom insulating plate and the module bottom plate are both provided with through holes corresponding to the air duct to realize the passage of the air duct; The top insulating plate; wherein the outer surface of the power module is provided with corresponding insulating plates; the left cooling air duct, the right cooling air duct, the power module and its insulating plate form a square structure; the outside of the square structure is provided with metal panels.

Further, the module bottom plate is arranged and the air duct through hole is installed through a hexagonal insulating column.

Further, the first power module is an IGBT module; the second power module is a composite busbar and a capacitor in order from the inside to the outside.

Further, it is characterized in that: its installation method comprises the following steps:

Step 1: Screw the hexagonal insulating column into the pressure riveting screw on the bottom plate of the module, and insert the assembled hexagonal insulating column at the opening of the insulating plate at the bottom of the module.

Step 2: Assemble the left cooling air duct, the air duct baffle, and the right cooling air duct in sequence; coat the left and right 3IGBT modules with thermal grease on the surface of the radiator, and install the radiators into the cooling air ducts respectively. Left and cooling air duct right.

Step 3: Assemble the capacitor rear insulating plate, the capacitor separator, and the capacitor front insulating plate, then install the capacitor into it according to the hole position, and finally match the composite busbar to the capacitor hole, and tighten the screws to complete the assembly.

Step 4: Align the inner mounting holes of the composite busbar assembled in Step 3 with the threaded holes of the IGBT module, tighten with screws, and then place them on the components assembled in Step 1, align the holes, and screw them in with insulating screws.

Step 5: Assemble the module top plate, the module right insulation plate, the module right plate, the module front plate, the module left plate, and the module left insulation plate to the components in step 4, and the installation is complete.

3. Beneficial effects:

The invention provides an insulating installation structure for a power module and a structure with independent air duct heat dissipation. Two upper and lower insulating plates are used to isolate the power unit, and the corresponding positions are matched with the heat dissipation air duct. The external metal components are combined into a box to protect the Bare electrical leakage can prevent the occurrence of electric shock accidents, and ensure the high efficiency of heat dissipation, the reliability of insulation and the stability of dimensional accuracy.

Description of drawings

1 is an exploded view of the overall structure of the present invention;

2 is a schematic structural diagram of an assembly assembled in steps 1 and 2 in a specific embodiment;

3 is an external view of the assembly assembled in steps 1 and 2 in the specific embodiment;

Fig. 4 is the external view of the assembly assembled in step 4 in the specific embodiment;

FIG. 5 is an external view after the assembly of the present invention is completed.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1 , a device for insulating installation of a power module and an air duct heat dissipation device is characterized in that: it includes a heat dissipation air duct right 1 and a radiator right 2, a heat dissipation air duct left 3 and a radiator left 4, an air duct baffle 5; the right side of the radiator is installed side by side with the left side of the radiator, and an air duct baffle is set between the two; the right side of the radiator and the left side of the radiator are sleeved on the outer end of the corresponding radiator to form a vertical A first power module is fixed on the outer side of each radiator in the cavity of the air duct; two radiators and air duct baffles are located on the rear side formed by the rear side wall and are fixedly installed with a second power module. The power module; the bottom of the cooling air duct on the right and the left side of the cooling air duct is provided with a module bottom insulating plate 6 and a module bottom plate 7; ; The top of the cooling air duct right and the cooling air duct left is provided with a module top insulating plate 8 and a module top plate 9; wherein the outer surface of the power module is provided with corresponding insulating plates; the cooling air duct left, the cooling air duct right, The power module and its insulating plate form a square structure; metal panels are arranged on the outside of the square structure. In the drawing, 101 is the insulating plate on the right side of the module, 102 is the right side plate of the module, 103 is the front panel of the module, 104 is the left side plate of the module, 105 is the left side insulating plate of the module, 106 is the insulating plate after the capacitor, 107 is the capacitor separator, 108 is the capacitor Front insulating plate 8.

Further, the module bottom plate is arranged and the air duct through hole is installed 14 through a hexagonal insulating column.

Further, the first power module is an IGBT module 11 ; the second power module is a composite busbar 12 and a capacitor 13 in order from the inside to the outside.

Specific examples:

A device for insulating installation of a power module and an air duct heat dissipation, the installation method comprising the following steps:

Step 1: Screw the hexagonal insulating column into the pressure riveting screw on the bottom plate of the module, and insert the assembled hexagonal insulating column at the opening of the insulating plate at the bottom of the module.

Step 2: Assemble the left cooling air duct, the air duct baffle, and the right cooling air duct in sequence; coat the left and right 3IGBT modules with thermal grease on the surface of the radiator, and install the radiators into the cooling air ducts respectively. Left and cooling air duct right. As shown in Figures 2 and 3, it is the assembly drawing completed in this step.

Step 3: Assemble the capacitor rear insulating plate, the capacitor separator, and the capacitor front insulating plate, then install the capacitor into it according to the hole position, and finally match the composite busbar to the capacitor hole, and tighten the screws to complete the assembly.

Step 4: Align the inner mounting holes of the composite busbar assembled in Step 3 with the threaded holes of the IGBT module, tighten with screws, and then place them on the components assembled in Step 1, align the holes, and screw them in with insulating screws. Figure 4 is the assembled assembly drawing.

Step 5: Assemble the module top plate, the module right insulation plate, the module right plate, the module front plate, the module left plate, and the module left insulation plate to the components in step 4, and the installation is complete. Figure 5 is the assembled external view of the present invention.

Although the present invention has been disclosed above with preferred embodiments, they are not intended to limit the present invention. Any person skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be defined by the protection scope of the claims of the present application.

Claims (4)

1. A device for insulating installation and air duct heat dissipation of a power module, characterized in that: comprising the right radiator air duct and the right radiator, the left radiator air duct and the left radiator, and an air duct baffle; The left side of the radiator is installed side by side and an air duct baffle is set between them; the right cooling air duct and the left cooling air duct are sleeved on the outer end of the corresponding radiator to form a vertical through air duct; The outer position of the radiator is located in the cavity of the air duct, and a first power module is fixed; the two radiators and the air duct baffle are located on the rear side formed by the rear side wall and the second power module is fixedly installed; The bottom of the cooling air duct is provided with an insulating plate at the bottom of the module and the bottom of the module; the insulating plate at the bottom of the module and the bottom of the module are both provided with through holes corresponding to the air ducts to realize the penetration of the air ducts; the tops of the right and left cooling air ducts The insulating plate on the top of the module is arranged; the outer surface of the power module is provided with a corresponding insulating plate; the left cooling air duct, the right cooling air duct, the power module and its insulating plate form a square structure; the outside of the square structure is provided with metal panel. 2 . The device for insulating installation and air duct heat dissipation of a power module according to claim 1 , wherein the module bottom plate is arranged and the air duct through holes are installed through hexagonal insulating columns. 3 . 3 . The device for insulating installation and air duct heat dissipation of a power module according to claim 1 , wherein: the first power module is an IGBT module; the second power module is a composite busbar in order from the inside to the outside. 4 . with capacitors. 4. The device for insulating installation of a power module and heat dissipation through an air duct according to claim 1, wherein the installation method comprises the following steps: Step 1: Screw the hexagonal insulating column into the riveting screw on the module bottom plate, and insert the assembled hexagonal insulating column at the opening of the insulating plate at the bottom of the module; Step 2: Assemble the left cooling air duct, the air duct baffle, and the right cooling air duct in sequence; coat the left and right 3IGBT modules with thermal grease on the surface of the radiator, and install the radiators into the cooling air ducts respectively. Left and cooling air duct right; Step 3: Assemble the capacitor rear insulating plate, the capacitor separator, and the capacitor front insulating plate, then install the capacitor into it according to the hole position, and finally match the composite busbar to the capacitor hole, and tighten the screws to complete the assembly; Step 4: Align the inner mounting holes of the composite busbar assembled in Step 3 with the threaded holes of the IGBT module, tighten with screws, and then place them on the components assembled in Step 1, align the holes, and screw them in with insulating screws; Step 5: Assemble the module top plate, the module right insulation plate, the module right plate, the module front plate, the module left plate, and the module left insulation plate to the components in step 4, and the installation is complete.

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