CN210167351U

CN210167351U - Pressing device of IGBT device

Info

Publication number: CN210167351U
Application number: CN201921149432.3U
Authority: CN
Inventors: 罗东盛
Original assignee: Xi'an Liyuan Drive Technology Co Ltd
Current assignee: Xi'an Liyuan Drive Technology Co Ltd
Priority date: 2019-07-19
Filing date: 2019-07-19
Publication date: 2020-03-20
Anticipated expiration: 2029-07-19

Abstract

The utility model discloses a closing device of IGBT device belongs to the mechanical design field. The pressing device of the IGBT device is used under the working condition that the IGBT is vertically installed, the gap of the installation position is small, and bolts cannot be used, the pressing device is placed between the back surfaces of the two IGBT devices, and the tail end of the extension plate is in contact with the back surfaces of the IGBT devices and is used for pressing the IGBT devices, so that the heat dissipation surfaces of the IGBT devices are in normal contact with a water path and dissipate heat in time; furthermore, the tail end of the extension plate is in surface contact with the back of the heating element, so that the tail end of the extension plate is in firmer contact with the back of the heating element, and the IGBT device is more firmly pressed and fixed; the pressing device is made of elastic steel and can better adapt to the vibration of the whole structure, so that the stable stress is ensured.

Description

Pressing device of IGBT device

Technical Field

The utility model belongs to the mechanical design field, especially a closing device of IGBT device.

Background

Because the power of an IGBT (insulated gate bipolar transistor) electronic component is high, the heat generation is serious, and the service life and the service efficiency of the electronic component are reduced when the IGBT electronic component is in a high-temperature environment for a long time, some external related facilities are needed to ensure that the electronic component is at a proper temperature.

At the present stage, the cooling is usually performed in an air cooling or water cooling manner, the heat dissipation surface of the electronic component and an external heat sink are required to be in perfect contact to ensure the heat transfer efficiency in the heat dissipation process, and corresponding pressure is required to be applied to the back surface of the electronic component to ensure the contact reliability; the traditional IGBT is pressed by using a metal pressing strip and bolt tightening force, and has the following defects: threaded holes need to be added on the vertical surface of the electronic component, so that the use efficiency of a water path is low; due to the complexity increase of the existing equipment, the installation modes of electronic components are various, the operating environment is limited, and enough space cannot be reserved for ensuring the installation by using tools; the requirement on the flatness of the IGBT pressing strip is high, and if the pressing strip deforms in the screwing process, the stress of an electronic component is not in the center position and the heating is uneven.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a closing device of IGBT device.

In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:

the pressing device of the IGBT device comprises a bottom plate, wherein extension plates are arranged at two ends of the bottom plate, and the distance between the two extension plates is gradually increased from the bottom plate to the tail end of the bottom plate;

when the pressing device is arranged between the IGBT devices, the tail end of the extension plate is in contact with the back surfaces of the heating devices;

the pressing device is in an axisymmetric pattern.

Furthermore, the tail end of the extension plate is in line contact with the back surface of the heating component.

Furthermore, the tail end of the extension plate is in surface contact with the back surface of the heating component.

Furthermore, the tail end of the extension plate is provided with a clamping plate.

Further, the pressing device is made of elastic steel.

Compared with the prior art, the utility model discloses following beneficial effect has:

a hold-down device of IGBT device is used in the condition that the IGBT is vertically installed and the gap of the installation position is small, and the bolt cannot be used, the hold-down device is placed between the back surfaces of two IGBT devices, the tail end of an extension plate is contacted with the back surfaces of the IGBT devices and is used for holding down the IGBT devices, so that the heat dissipation surfaces of the IGBT devices are normally contacted with a water path and dissipate heat in time; furthermore, the tail end of the extension plate is in surface contact with the back of the heating element, so that the tail end of the extension plate is in firmer contact with the back of the heating element, and the IGBT device is more firmly pressed and fixed; furthermore, the clamping plate at the tail end of the extension plate can be well provided with the pressing device by using a pair of pliers, so that the mounting efficiency is high; furthermore, the pressing device is made of elastic steel, so that the pressing device can better adapt to the vibration of the whole structure, and the stress stability is ensured.

Drawings

Fig. 1 is an axonometric view of a pressing device for thermal components of the present invention;

fig. 2 is a cross-sectional view of a thermal component pressing device of the present invention;

fig. 3 is an assembly view of the compressing device of the thermal component and the IGBT device of the present invention.

Wherein: 1-a bottom plate; 2-an extension plate; and 3, clamping the plate.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below 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 efforts shall belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The present invention will be described in further detail with reference to the accompanying drawings:

referring to fig. 1 and 2, fig. 1 and 2 are an axonometric view and a cross-sectional view, respectively, of a pressing device of an IGBT device according to the present invention; the pressing device of the IGBT device comprises a bottom plate 1, extension plates 2 and clamping plates 3, wherein the extension plates 2 are arranged at two ends of the bottom plate 1, and the distance between the two extension plates 2 is gradually increased from the bottom plate to the tail ends of the extension plates; the pressing device is an axisymmetric figure; the orthographic projection of the outer surface of the tail end of the extension plate 2 on the bottom plate 1 is a straight line, and the contact between the tail end of the extension plate 2 and the back surface of the heating element is ensured to be surface contact; the distance between the clamping plates 3 is smaller than the distance between the tail ends of the two extension plates 2, so that force is applied when the device is applied; the pressing device is made of elastic steel.

When the device is installed, the tail end of the clamping plate 3 is a stress point, and after the device is installed in place, the tail end of the extension plate 2 is a contact surface and a stress surface with the heating element; in the design stage, the plastic deformation interval of the elastic steel needs to be calculated, and the resilience force can be adjusted by adjusting the size of the bottom fillet, so that the stress size in the fixed size process is ensured; when in installation, the size of the 3 openings of the elastic clamping plate is changed by stress, and the elastic clamping plate is fixed at a corresponding position by utilizing the positioning of the bottom plate 1; the full contact and fixing pressure of the heat dissipation surface are ensured by pressing the electronic component by the elastic force at the end of the extension board 2.

Referring to fig. 3, fig. 3 is an assembly diagram of the pressing device of the thermal component and the IGBT device according to the present invention; after the IGBT device is installed in place, the pressing device is located between the back faces of the two IGBT devices, a bottom plate 1 of the pressing device is a reference plane, and the tail end of the extension plate 2 is used for pressing the back faces of the IGBT devices.

The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.

Claims

1. The pressing device for the IGBT device is characterized by comprising a bottom plate (1), wherein extension plates (2) are arranged at two ends of the bottom plate (1), and the distance between the two extension plates (2) is gradually increased from the bottom plate to the tail end of the bottom plate;

when the pressing device is arranged between the IGBT devices, the tail end of the extension plate (2) is in contact with the back surfaces of the heating components;

the pressing device is in an axisymmetric pattern.

2. The pressing device for the IGBT device as claimed in claim 1, wherein the contact of the tail end of the extension plate (2) and the back surface of the heating component is a line contact.

3. The pressing device for the IGBT device as claimed in claim 1, wherein the contact of the tail end of the extension plate (2) and the back surface of the heating component is surface contact.

4. The pressing device of the IGBT device according to claim 1, wherein the extension plate (2) is provided with a clamping plate (3) at the end.

5. The IGBT device pressing device according to any one of claims 1 to 4, wherein the pressing device is made of elastic steel.