CN208352287U

CN208352287U - A kind of inverse guide groove IGBT device

Info

Publication number: CN208352287U
Application number: CN201821141450.2U
Authority: CN
Inventors: 陈利; 陈译; 陈剑; 姜帆; 张军亮
Original assignee: Xiamen Core 1 Integrated Circuit Co Ltd
Current assignee: Xiamen Core 1 Integrated Circuit Co Ltd
Priority date: 2018-07-18
Filing date: 2018-07-18
Publication date: 2019-01-08
Anticipated expiration: 2028-07-18

Abstract

The utility model discloses a kind of inverse guide groove IGBT devices, including fixed plate and resin enclosure, it further include guiding mechanism and cooling mechanism, the bottom of the resin enclosure is connected with shell bottom plate, the cooling mechanism includes fixed plate guide groove and bottom plate convex block, the fixed plate guide groove is opened in the surface of the fixed plate, and the interior bottom end of the fixed plate guide groove is fixed with the first magnet, and the bottom plate convex block is fixed on the bottom of the shell bottom plate；In the utility model, by being provided with fixed plate guide groove and bottom plate convex block, and the first magnet is set in the interior bottom end of fixed plate guide groove, the second magnet is connected in the bottom end of bottom plate convex block, convenient for passing through the absorption of the first magnet and the second magnet, the effect of fixed plate and shell bottom plate guiding connection is quickly played, so that fixed plate and shell bottom plate installation are faster；By when being connected convenient for IGBT device with other equipment, preferably radiating, extending the service life of IGBT device the surface of fixed plate is provided with radiator-grid.

Description

A kind of inverse guide groove IGBT device

Technical field

The utility model belongs to IGBT technical field, and in particular to a kind of inverse guide groove IGBT device.

Background technique

IGBT module is by IGBT (insulated gate bipolar transistor chip) and FWD (freewheeling diode chip) by specific Circuit bridge encapsulation made of modularized semiconductor product；Between IGBT module after encapsulation directly applies to frequency converter, UPS not In the equipment such as power-off source.

However existing inverse guide groove IGBT device remains some unreasonable factors when in use, it is existing inverse to lead Slot IGBT device is when in use:

1.IGBT module application has very big deficiency in terms of module heat dissipating, heat loss is slow, shadow when the equipment such as frequency converter The service life of inverse guide groove IGBT device is rung；

2.IGBT is screwed when device outer case bottom plate is connected with fixed plate, due to lacking guiding, is directed at screw hole It tightens that time-consuming, reduces the efficiency of installation.

Utility model content

It is mentioned above in the background art to solve the purpose of this utility model is to provide a kind of inverse guide groove IGBT device Existing inverse guide groove IGBT device remains some unreasonable factors when in use, and existing inverse guide groove IGBT device exists In use, having very big deficiency in terms of module heat dissipating when IGBT module is applied to the equipment such as frequency converter, heat loss is slow, influences The service life of inverse guide groove IGBT device；IGBT device shell bottom plate is screwed when connecting with fixed plate, due to lacking Few guiding, alignment screw hole tighten that time-consuming, reduce the efficiency of installation.

To achieve the above object, the utility model provides the following technical solutions: a kind of inverse guide groove IGBT device, including fixation Plate and resin enclosure further include guiding mechanism and cooling mechanism, and the bottom of the resin enclosure is connected with shell bottom plate, described to dissipate Heat engine structure includes fixed plate guide groove and bottom plate convex block, and the fixed plate guide groove is opened in the surface of the fixed plate, the fixation The interior bottom end of plate guide groove is fixed with the first magnet, and the bottom plate convex block is fixed on the bottom of the shell bottom plate, and bottom plate convex block Match with fixed plate guide groove, the bottom end of the bottom plate convex block is connected with the second magnet.

Preferably, the cooling mechanism is radiator-grid, and radiator-grid is fixed on the surface of the fixed plate.

Preferably, the upper surface middle position of the resin enclosure is fixed with several insulating substrates, several insulation bases Corresponding main terminal is connected at the top of plate.

Preferably, if the upper surface right end of the resin enclosure is uniformly distributed with along the width direction of the resin enclosure Dry auxiliary terminal.

Preferably, the surface quadrangle of the fixed plate offers the first connecting hole, the surface of the shell bottom plate and described The opposite position of first connecting hole offers the second connecting hole.

Preferably, the spacing of two adjacent auxiliary terminals is 1-3mm.

Compared with prior art, the utility model has the beneficial effects that

(1) by being arranged first provided with fixed plate guide groove and bottom plate convex block, and in the interior bottom end of fixed plate guide groove Magnet connects the second magnet in the bottom end of bottom plate convex block, convenient for passing through the absorption of the first magnet and the second magnet, quickly plays The effect of fixed plate and shell bottom plate guiding connection, so that fixed plate and shell bottom plate installation are faster；

(2) by the surface of fixed plate be provided with radiator-grid, convenient for IGBT device connected with other equipment when, preferably Heat dissipation, extends the service life of IGBT device.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the fixed plate overlooking structure diagram of the utility model；

Fig. 3 is the fixed plate schematic cross-sectional view of the utility model；

Fig. 4 is the resin enclosure and shell bottom plate positive structure diagram of the utility model；

Fig. 5 is IGBT device equivalent circuit diagram；

In figure: 1, fixed plate；2, auxiliary terminal；3, resin enclosure；4, main terminal；5, shell bottom plate；6, insulating substrate；7, Radiator-grid；8, fixed plate guide groove；9, the first connecting hole；10, the first magnet；11, the second connecting hole；12, bottom plate convex block；13, Two magnet.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Embodiment 1

Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5 are please referred to, the utility model provides a kind of technical solution: a kind of inverse guide groove IGBT Device, including fixed plate 1 and resin enclosure 3, further include guiding mechanism and cooling mechanism, and the bottom of resin enclosure 3 is connected with outer Shell bottom plate 5, cooling mechanism include fixed plate guide groove 8 and bottom plate convex block 12, and fixed plate guide groove 8 is opened in the surface of fixed plate 1, Gu The interior bottom end of fixed board guide groove 8 is fixed with the first magnet 10, and bottom plate convex block 12 is fixed on the bottom of shell bottom plate 5, and bottom plate convex block 12 and fixed plate guide groove 8 match, the bottom end of bottom plate convex block 12 is connected with the second magnet 13.

For the ease of the fixation of radiator-grid 7, so that IGBT device preferably radiates when connecting other equipment operations, this In embodiment, it is preferred that cooling mechanism is radiator-grid 7, and radiator-grid 7 is fixed on the surface of fixed plate 1.

For the ease of the installation of insulating substrate 6 and main terminal 4, in the present embodiment, it is preferred that the upper table of resin enclosure 3 Face middle position is fixed with several insulating substrates 6, and the top of several insulating substrates 6 is connected with corresponding main terminal 4.

For the ease of the fixation of auxiliary terminal 2, in the present embodiment, it is preferred that the upper surface right end of resin enclosure 3 is along resin The width direction of shell 3 is uniformly distributed with several auxiliary terminals 2.

For the ease of being connected and fixed for fixed plate 1 and shell bottom plate 5, in the present embodiment, it is preferred that the surface of fixed plate 1 Quadrangle offers the first connecting hole 9, and the surface of shell bottom plate 5 and the opposite position of the first connecting hole 9 offer the second connecting hole 11。

When for the ease of 2 wiring of auxiliary terminal, reduction is short-circuit, in the present embodiment, it is preferred that two adjacent auxiliary terminals 2 spacing is 1mm.

Embodiment 2

When for the ease of 2 wiring of auxiliary terminal, reduction is short-circuit, in the present embodiment, it is preferred that two adjacent auxiliary terminals 2 spacing is 2mm.

Embodiment 3

When for the ease of 2 wiring of auxiliary terminal, reduction is short-circuit, in the present embodiment, it is preferred that two adjacent auxiliary terminals 2 spacing is 3mm.

The working principle and process for using of the utility model: after the utility model installs, in use, in fixed plate 1 Surface open up fixed plate guide groove 8, the first magnet 10 is fixed on to the interior bottom end of fixed plate guide groove 8, in the bottom of shell bottom plate 5 Fixed bottom plate convex block 12, and the second magnet 13 is fixed on to the bottom end of bottom plate convex block 12 opens up the in the surface quadrangle of fixed plate 1 One connecting hole 9, on the surface of shell bottom plate 5 and the first connecting hole 9, opposite position opens up the second connecting hole 11, when passing through screw When across the first connecting hole 9 and the second connecting hole 11 by fixed plate 1 and fixed shell bottom plate 5, the first magnet 10 and second is utilized The absorption of magnet 13 provides the effect of guiding for it, so that screw passes through the first connecting hole 9 and the second connecting hole 11 is faster；

Radiator-grid 7 is fixed on to the surface of fixed plate 1, and radiator-grid 7 is made to penetrate through fixed plate 1, when IGBT device connects When other equipment operations, by the heat dissipation mesh of radiator-grid 7, heat is distributed, extends the service life of IGBT device；

In equivalent circuit diagram, RN is the modulated resistance in PNP transistor base area, can be clearly from the equivalent circuit Out, IGBT is the multiple device of the darlington structure with transistor and MOSFET composition, and IGBT is-kind of field controller, it is opened Logical and shutdown is determined by grid and transmitting voltage across poles UGE, when grid radio pressure UCE is positive and is greater than cut-in voltage UCE (th), Channel is formed in MOSFET and provides base current for PNP transistor and then IGBT is connected, at this point, from the area P+ injection N-'s Hole (minority carrier) carries out conductance modulation to the area N-, reduces the resistance RN in the area N-, the IGBT of high voltage is made also to have very little On-state voltage drop, when not plus signal or when adding backward voltage between grid emitter-base bandgap grading, the channel in MOSFET disappears, PNP transistor Base current is cut off, and IGBT is turned off.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims

1. a kind of inverse guide groove IGBT device, including fixed plate (1) and resin enclosure (3), it is characterised in that: further include guiding mechanism And cooling mechanism, the bottom of the resin enclosure (3) are connected with shell bottom plate (5), the cooling mechanism includes fixed plate guide groove (8) and bottom plate convex block (12), the fixed plate guide groove (8) are opened in the surface of the fixed plate (1), the fixed plate guide groove (8) interior bottom end is fixed with the first magnet (10), and the bottom plate convex block (12) is fixed on the bottom of the shell bottom plate (5), and Bottom plate convex block (12) and fixed plate guide groove (8) match, and the bottom end of the bottom plate convex block (12) is connected with the second magnet (13).

2. a kind of inverse guide groove IGBT device according to claim 1, it is characterised in that: the cooling mechanism is radiator-grid (7), and radiator-grid (7) is fixed on the surface of the fixed plate (1).

3. a kind of inverse guide groove IGBT device according to claim 1, it is characterised in that: the upper table of the resin enclosure (3) Face middle position is fixed with several insulating substrates (6), is connected with corresponding main terminal at the top of several insulating substrates (6) (4)。

4. a kind of inverse guide groove IGBT device according to claim 1, it is characterised in that: the upper table of the resin enclosure (3) Face right end is uniformly distributed with several auxiliary terminals (2) along the width direction of the resin enclosure (3).

5. a kind of inverse guide groove IGBT device according to claim 1, it is characterised in that: the surface four of the fixed plate (1) Angle offers the first connecting hole (9), and the surface of the shell bottom plate (5) and the opposite position of first connecting hole (9) open up There are the second connecting hole (11).

6. a kind of inverse guide groove IGBT device according to claim 4, it is characterised in that: two adjacent auxiliary terminals (2) spacing is 1-3mm.