CN218041207U

CN218041207U - Power module for direct current chopping

Info

Publication number: CN218041207U
Application number: CN202221938305.3U
Authority: CN
Inventors: 郭光辉
Original assignee: Luoyang Ranyi Electronic Technology Co ltd
Current assignee: Luoyang Ranyi Electronic Technology Co ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-12-13
Anticipated expiration: 2032-07-26

Abstract

The utility model discloses a power module for direct current chopping, which comprises a bottom plate; the power module for the direct-current chopping is characterized in that the bottom plate is formed by laminating three copper plates, an insulating layer is arranged between the three copper plates, the first copper plate is connected with the input end of an external power supply, the second copper plate is electrically connected with an external control end, the third copper plate is electrically connected with the output end of the external power supply, a capacitor assembly is arranged on the upper surface of the bottom plate, and an IGBT power device is installed at the right end of the lower surface of the bottom plate; the bottom plate that the three-layer stack set up can effectively ensure the reliability of circuit, and the setting of heat conduction silica gel filling layer has made things convenient for quick heat dissipation, the mounting hole that a plurality of antithetical couplet arranged for IGBT power device's mounted position can be adjusted according to the in-service use condition.

Description

Power module for direct current chopping

Technical Field

The utility model relates to an electron electrical technology field specifically is a power module for direct current chopping.

Background

The dc chopper circuit, also known as a dc conversion technology, has a common application foundation in the field of driving of switching power supplies and dc motors for subway vehicles, trolley buses, and the like. The constant direct-current voltage is converted into variable direct-current voltage through the direct-current chopper circuit, so that the direct-current chopper circuit is used for providing a direct-current power supply, and the power supply can be flexibly adjusted according to actual requirements of various devices.

In the prior art, most direct current chopping power components are composed of a plurality of independently installed electric appliance elements, and the electric appliance elements occupy a large amount of space during installation, are bulky in structure and poor in circuit reliability; meanwhile, because the IGBT module in the power component for direct current chopping generates more heat, how to quickly dissipate heat of the IGBT module is also an urgent problem to be solved.

Disclosure of Invention

The utility model provides a power module for direct current chopping can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a power module for direct current chopping comprises a bottom plate; the bottom plate is formed by three-layer copper plate pressure folding, is equipped with the insulating layer between the three-layer copper, and first layer copper links to each other with external power source's input, and second floor copper is connected with external control end electricity, and third layer copper is connected with external power source's output electricity, and the upper surface of bottom plate is equipped with capacitor assembly, IGBT power device is installed to the lower surface right-hand member of bottom plate, and the lower surface mounting of bottom plate has the bottom heating panel, and the bottom heating panel includes the plastic casing body, and the upper surface of plastic casing body is equipped with location stud hole, heat conduction copper sheet and mounting hole, and the inside of plastic casing body is equipped with heat conduction silica gel filling layer, and the upper surface right-hand member of plastic casing body is equipped with the heat conduction copper sheet, and the lower surface of plastic casing body is equipped with heat dissipation aluminum sheet.

Furthermore, the capacitor component arrays are uniformly distributed on the upper surface of the bottom plate, the capacitor components are fixed on the bottom plate through long bolts, and the long bolts penetrate through the positioning stud holes.

Furthermore, the lateral surface left end of bottom plate is equipped with two vertical mounting panels.

Furthermore, horizontal mounting plates are arranged at the front end and the rear end of the outer side face of the bottom plate.

Furthermore, the IGBT power device is fixed on the bottom plate through a bolt, and the bolt penetrates through the mounting hole.

Compared with the prior art, the beneficial effects of the utility model are that:

1. according to the power module for the direct-current chopping, the plurality of power assemblies for the direct-current chopping are combined together, so that the space utilization rate is improved, the integrated IGBT power device can be well cooled, and the overall service life and the operation stability of equipment are improved;

2. the bottom plate that the three-layer stack set up can effectively ensure the reliability of circuit, and the setting of heat conduction silica gel filling layer has made things convenient for quick heat dissipation, and the mounting hole that a plurality of antithetical couplets were arranged for IGBT power device's mounted position can be adjusted according to the in-service use condition.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 is a top view of the present invention;

FIG. 4 is a top view of the bottom heat spreader plate;

fig. 5 is a cross-sectional view of a bottom heat sink.

In the figure: the solar cell module comprises a base plate 1, a vertical mounting plate 2, a horizontal mounting plate 3, a bolt 4, an IGBT power device 5, a long bolt 6, a capacitor assembly 7, a heat dissipation plate 8 at the bottom, a positioning stud hole 81, a plastic outer shell 82, a heat conduction copper sheet 83, a mounting hole 84, a heat dissipation aluminum sheet 85 and a heat conduction silica gel filling layer 86.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, if an orientation description is referred to, for example, the directions or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in fig. 2, only for convenience of description and simplification of description, but not for indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. When a feature is referred to as being "disposed," "secured," or "connected" to another feature, it can be directly disposed, secured, or connected to the other feature or be indirectly disposed, secured, or connected to the other feature.

Referring to fig. 1-5, the present invention provides a technical solution: a power module for direct current chopping comprises a bottom plate 1; the lateral surface left end of bottom plate 1 is equipped with two vertical mounting panels 2, and both ends all are equipped with horizontal mounting panel 3 around the lateral surface of bottom plate 1, and bottom plate 1 is formed by three-layer copper plate pressure stack, is equipped with the insulating layer between the three-layer copper, and first layer copper links to each other with external power source's input, and second floor copper is connected with external control end electricity, and the third layer copper is connected with external power source's output electricity.

The upper surface of the bottom plate 1 is provided with capacitor assemblies 7, the capacitor assemblies 7 are uniformly distributed on the upper surface of the bottom plate 1 in an array mode, the capacitor assemblies 7 are fixed on the bottom plate 1 through long bolts 6, the long bolts 6 penetrate through positioning stud holes 81 to be arranged, the bottoms of the long bolts 6 are made of non-conductive PVC, IGBT power devices 5 are installed at the right end of the lower surface of the bottom plate 1, the IGBT power devices 5 are fixed on the bottom plate 1 through bolts 4, and the bolts 4 penetrate through mounting holes 84 to be arranged.

The lower surface mounting of bottom plate 1 has and is used for giving radiating bottom heating panel 8 of IGBT power device 5, bottom heating panel 8 includes insulating excellent plastic casing body 82, plastic casing body 82's upper surface is equipped with location stud hole 81, heat conduction copper sheet 83 and mounting hole 84, plastic casing body 82's inside is equipped with heat conduction silica gel filling layer 86, heat conduction copper sheet 83 sets up the upper surface right-hand member at plastic casing body 82, plastic casing body 82's lower surface is equipped with heat dissipation aluminum sheet 85.

When in use: the position of the IGBT power device 5 is adjusted, the IGBT power device 5 is fixed through the bolt 4 after adjustment is completed, heat generated when the IGBT power device 5 works is transmitted to the heat-conducting silica gel filling layer 86 through the heat-conducting copper sheet 83, and is transmitted to the heat-radiating aluminum sheet 85 through the heat-conducting silica gel filling layer 86, and heat radiation is realized through heat exchange between the heat-radiating aluminum sheet 85 and the air piece.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a power module is used in direct current chopping which characterized in that: comprises a bottom plate (1); bottom plate (1) is formed by three-layer copper plate pressfitting, is equipped with the insulating layer between the three-layer copper, and first layer copper links to each other with external power source's input, and second floor copper is connected with external control end electricity, and the third layer copper is connected with external power source's output electricity, and the upper surface of bottom plate (1) is equipped with capacitor assembly (7), IGBT power device (5) are installed to the lower surface right-hand member of bottom plate (1), and the lower surface mounting of bottom plate (1) has bottom heating panel (8), and bottom heating panel (8) include plastic casing body (82), and the upper surface of plastic casing body (82) is equipped with location stud hole (81), heat conduction copper sheet (83) and mounting hole (84), and the inside of plastic casing body (82) is equipped with heat conduction silica gel filling layer (86), and the upper surface right-hand member of plastic casing body (82) is equipped with heat conduction copper sheet (83), and the lower surface of plastic casing body (82) is equipped with heat dissipation aluminum sheet (85).

2. The power module for dc chopping as claimed in claim 1, wherein: capacitor assembly (7) array equipartition is on the upper surface of bottom plate (1), and capacitor assembly (7) are fixed on bottom plate (1) through stay bolt (6), and stay bolt (6) pass location stud hole (81) and set up.

3. The power module for dc chopping as claimed in claim 1, wherein: the lateral surface left end of bottom plate (1) is equipped with two vertical mounting panels (2).

4. The power module for dc chopping as claimed in claim 1, wherein: horizontal mounting plates (3) are arranged at the front end and the rear end of the outer side face of the bottom plate (1).

5. The power module for dc chopping as claimed in claim 1, wherein: the IGBT power device (5) is fixed on the bottom plate (1) through a bolt (4), and the bolt (4) penetrates through the mounting hole (84).