CN210607229U - High-voltage IGBT power module - Google Patents

Abstract

The utility model discloses a high voltage IGBT power module, including base, casing, bolt and heat radiation structure, the fixed casing that is provided with in top of base, the both sides of casing are fixed respectively and are provided with two backup pads, be fixed connection between the bottom of backup pad and the base, the cavity has been seted up in the casing, first screw has been seted up at the even top of casing, it has the bolt to peg graft in the first screw internal thread, the bottom of bolt extends to in the cavity. The utility model discloses a cavity and heat dissipation chamber have been seted up in the casing, still locate the fixed little fan that is equipped with in the center in heat dissipation chamber for directly carrying out the physics heat dissipation to the current conducting plate of top, be equipped with radiating fin in the both sides of little fan respectively the fixed of equidistance moreover, radiating fin's top and bottom carry out fixed connection with the top and the bottom in heat dissipation chamber respectively, can improve the inside heat transfer area of power module, thereby improve the inside radiating effect of power module.

Description

High-voltage IGBT power module

Technical Field

The utility model relates to a IGBT power module technical field specifically is high voltage IGBT power module.

Background

The igbt power module is controlled by a voltage type, and has the advantages of large input impedance, small driving power, simple control circuit, small switching loss, high on-off speed, high working frequency, large element capacity and the like. The bipolar power transistor is a composite power device, and integrates the advantages of a bipolar power transistor and a power mosfet into a whole. Due to the characteristics of low on-state saturation voltage and high switching frequency (up to 20khz) which are very remarkable due to advanced processing technology, recently Siemens company has introduced that npt-igbt with low saturation voltage drop (2.2v) has better performance, and Toshiba, Fuji, ir and Motorola have been developed to develop new varieties. igbt is an advanced third-generation power module, has the working frequency of 1-20khz, and is mainly applied to a main loop inverter and all inverter circuits of a frequency converter, namely dc/ac conversion. Examples are electric cars, servo controllers, ups, switching power supplies, chopper power supplies, trolley buses, etc. The power module has a history for more than ten years, almost all other power devices are replaced, for example, in low-frequency applications with tear current power as high as 1mw, such as scr.gto, gtr, mosfet and bipolar Darlington tubes, the voltage of a single element can reach 4.okv (pt structure) to 6.5kv (npt structure), and the current can reach 1.5ka, so the power module is an ideal power module.

Because the volume in most IGBT power modules is too small, the temperature of internal electronic components can rise after the internal electronic components are used for a period of time, and the limited area can not be used for heat dissipation in time, so that the service life of the electronic components can be lost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high voltage IGBT power module to solve the problem that provides in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: high voltage IGBT power module, including base, casing, bolt and heat radiation structure, the fixed casing that is provided with in top of base, the both sides of casing are fixed respectively and are provided with two backup pads, be fixed connection between the bottom of backup pad and the base, the cavity has been seted up in the casing, the first screw has evenly been seted up at the top of casing, first screw internal thread is pegged graft and is had the bolt, the bottom of bolt extends to in the cavity, heat radiation structure includes heat dissipation chamber, radiating fin and gentle breeze machine, the fixed current conducting plate that is provided with in top of cavity, the heat dissipation chamber has been seted up to the below that is located the cavity in the casing, the fixed little fan that is provided with in center department in the heat dissipation chamber, the both sides of gentle breeze machine are fixed respectively and.

Preferably, the two ends of the base are positioned between the two support plates and provided with second screw holes.

Preferably, the volume of the cavity is larger than that of the heat dissipation cavity.

Preferably, the surfaces of the base and the shell are coated with insulating material layers.

Preferably, the number of the bolts is three, and the three bolts are arranged in parallel.

Preferably, the support plate is arranged in a triangular shape.

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

1. the utility model discloses a fixed casing that is equipped with in the top of base, then seted up cavity and heat dissipation chamber in the casing, the cavity is in the top in heat dissipation chamber, the bottom of cavity is fixed and is provided with the current conducting plate, as the normal work of power module, the center department in heat dissipation chamber is fixed and is equipped with the little fan, be used for directly carrying out the physics heat dissipation to the current conducting plate of top, and still fix in the both sides of little fan equidistance respectively and be equipped with radiating fin, radiating fin's top and bottom carry out fixed connection with the top and the bottom in heat dissipation chamber respectively, can improve the heat transfer area inside the power module, thereby improve the radiating effect, increased the life of power module;

2. the utility model discloses still fix respectively at the both ends of casing simultaneously and be equipped with the backup pad, the backup pad is triangle-shaped setting, can improve the supporting effect to the casing to improve overall structure's stable effect, still be located two backup pads at the both ends of base and seted up the second screw between, can be convenient for install and dismantle power module.

Drawings

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

FIG. 2 is a top view of the overall structure of the present invention;

fig. 3 is a cross-sectional view of the overall structure of the present invention.

In the figure: 1-a base; 101-a second screw hole; 2-a shell; 201-a first screw hole; 3-a support plate; 4-a bolt; 5-a cavity; 501, a conductive plate; 6-heat dissipation cavity; 7-radiating fins; 8-a micro-fan.

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.

Referring to fig. 1-3, the present invention provides a technical solution: the high-voltage IGBT power module comprises a base 1, a shell 2, a bolt 4 and a heat dissipation structure, a shell 2 is fixedly arranged above the base 1, two supporting plates 3 are respectively and fixedly arranged at two sides of the shell 2, the bottom of the supporting plate 3 is fixedly connected with the base 1, a cavity 5 is arranged in the shell 2, the top of the shell 2 is uniformly provided with a first screw hole 201, a bolt 4 is inserted in the first screw hole 201, the bottom of the bolt 4 extends into the cavity 5, the heat dissipation structure comprises a heat dissipation cavity 6, heat dissipation fins 7 and a breeze machine 8, an electric conducting plate 501 is fixedly arranged above the cavity 5, a heat radiating cavity 6 is arranged in the shell 2 and below the cavity 5, the central department in the heat dissipation chamber 6 is fixed and is provided with little fan 8, the both sides of little fan 8 are fixed respectively and are provided with radiating fin 7.

A second screw hole 101 is formed between the two support plates 3 at two ends of the base 1, so that the power module can be conveniently mounted and dismounted; the volume of the cavity 5 is larger than that of the heat dissipation cavity 6, so that the space utilization efficiency is improved; the surfaces of the base 1 and the shell 2 are coated with insulating material layers, so that the insulating effect of the base 1 and the shell 2 is improved; the number of the bolts 4 is three, and the three bolts 4 are arranged in parallel, so that the use is convenient; the supporting plate 3 is arranged in a triangular shape, so that the supporting effect on the shell 2 is increased, and the stabilizing effect of the whole structure is improved.

The working principle is as follows: the utility model discloses a through fixed being equipped with casing 2 above base 1, then have cavity 5 and heat dissipation chamber 6 in casing 2, cavity 5 is above heat dissipation chamber 6, the bottom of cavity 5 is fixed and is provided with current conducting plate 201, as the normal work of power module, the center department of heat dissipation chamber 6 is fixed and is equipped with little fan 8, be used for directly carrying out the physics heat dissipation to current conducting plate 501 above, and still fix in the both sides of little fan 8 equidistance respectively and be equipped with radiating fin 7, the top and the bottom of radiating fin 7 respectively with the top and the bottom of heat dissipation chamber 6 carry out fixed connection, can improve the heat transfer area inside the power module, thereby improve the radiating effect, increased the life of power module; simultaneously still fix respectively at the both ends of casing 2 and be equipped with backup pad 3, backup pad 3 is the triangle-shaped setting, can improve the supporting effect to casing 2 to improve overall structure's stable effect, still lie in at the both ends of base 1 and seted up second screw 101 between two backup pads 3, can be convenient for install and dismantle power module.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 (6)

1. High voltage IGBT power module, including base (1), casing (2), bolt (4) and heat radiation structure, its characterized in that: a shell (2) is fixedly arranged above the base (1), two supporting plates (3) are fixedly arranged on two sides of the shell (2) respectively, the bottom of each supporting plate (3) is fixedly connected with the base (1), a cavity (5) is formed in the shell (2), first screw holes (201) are uniformly formed in the top of the shell (2), bolts (4) are inserted in the first screw holes (201) in an internal thread manner, the bottoms of the bolts (4) extend into the cavities (5), the heat dissipation structure comprises heat dissipation cavities (6), heat dissipation fins (7) and a micro-fan (8), a conductive plate (501) is fixedly arranged above the cavities (5), a heat dissipation cavity (6) is formed below the cavity (5) in the shell (2), and the micro-fan (8) is fixedly arranged at the center in the heat dissipation cavity (6), and heat radiating fins (7) are respectively fixedly arranged on two sides of the micro-fan (8).

2. The high voltage IGBT power module of claim 1, wherein: and the two ends of the base (1) are positioned between the two supporting plates (3) and are provided with second screw holes (101).

3. The high voltage IGBT power module of claim 1, wherein: the volume of the cavity (5) is larger than that of the heat dissipation cavity (6).

4. The high voltage IGBT power module of claim 1, wherein: the surfaces of the base (1) and the shell (2) are coated with insulating material layers.

5. The high voltage IGBT power module of claim 1, wherein: the number of the bolts (4) is three, and the three bolts (4) are arranged in parallel.

6. The high voltage IGBT power module of claim 1, wherein: the supporting plate (3) is arranged in a triangular shape.

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