CN218482976U

CN218482976U - IGBT mounting structure

Info

Publication number: CN218482976U
Application number: CN202222518908.4U
Authority: CN
Inventors: 谢庆伟; 雷喜斌; 林星; 郑昕斌
Original assignee: Fuzhou Xicheng Electronic Co ltd
Current assignee: Fuzhou Xicheng Electronic Co ltd
Priority date: 2022-09-22
Filing date: 2022-09-22
Publication date: 2023-02-14
Anticipated expiration: 2032-09-22

Abstract

The utility model relates to a IGBT device technical field especially relates to a mounting structure of IGBT. Through the clamp plate that adopts the plastics material and cooperation retaining member, the retaining member pays so that through fixed ear and aluminum sheet lock the plastics clamp plate supports and leans on in the IGBT on the surface, and the plastics clamp plate is the face contact with the IGBT surface moreover to this replaces current mounting structure, and the clamp plate of plastics material not only can play insulating effect, and the working of plastics can reduce the rigidity effort when contacting with the IGBT surface moreover, because the plastics clamp plate is the face contact with the IGBT surface simultaneously, has increased area of contact, has reduced pressure, makes whole atress balanced, is difficult for causing the damage to the IGBT surface.

Description

IGBT mounting structure

Technical Field

The utility model relates to a IGBT device technical field especially relates to a mounting structure of IGBT.

Background

At present, with the global requirements of energy conservation and emission reduction, an electric automobile is a new direction for automobile development, and a PTC (Positive temperature coefficient) heater can be used for auxiliary heating and defrosting in winter and is an indispensable part of the electric automobile. The IGBT device is an important device for the PTC heater, and its mounting problem is receiving attention.

The existing installation structure of the IGBT device is named as a heat dissipation structure of the IGBT device as the application number 202020526471.7, and discloses that a pressing sheet, a screw rod and a nut are used, meanwhile, a threaded hole is formed in an aluminum sheet, and a through hole is formed in the pressing sheet corresponding to the threaded hole; one end of the screw is in threaded connection with the threaded hole, the other end of the screw penetrates through the through hole and is in fastening connection with the nut so that the pressing sheet abuts against the surface of the IGBT device, and therefore the installation structure of the IGBT device is achieved.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to solve the technical problem that an IGBT mounting structure is provided, the problem of damage to IGBT devices can be effectively improved.

In order to solve the technical problem, the utility model discloses a technical scheme be:

IGBT's mounting structure is applied to the PTC heater, the PTC heater includes aluminum sheet and potsherd, the potsherd is located on the aluminum sheet, IGBT locates on the potsherd, mounting structure includes plastic pressing plate and retaining member, plastic pressing plate's relative both ends are equipped with fixed ear respectively, the retaining member pays so that through fixed ear and aluminum sheet lock plastic pressing plate supports and leans on the IGBT is surperficial.

Furthermore, the plastic pressing plate comprises a frame body and a hollow positioning column connected to one side of the frame body, the frame body is provided with a hollow part matched with the surface shape of the IGBT, two ends of the hollow positioning column penetrate through the hollow positioning column, and pins of the IGBT penetrate through the hollow positioning column to the outside from one end of the hollow positioning column to the other end of the hollow positioning column.

Furthermore, each IGBT is provided with three hollow positioning columns, a limiting groove is formed between adjacent three hollow positioning columns, and the groove width of the limiting groove is matched with the width of the pins of the IGBT.

Furthermore, the through hole in the direction from one end of the hollow positioning column to the other end is a horn hole.

Furthermore, one the frame body is provided with four hollow parts which are arranged side by side in a straight line.

Further, the thickness range of the plastic pressing plate is 2.0mm-2.5mm.

Further, the thickness of the plastic pressing plate is 2.3mm.

The beneficial effects of the utility model reside in that:

the utility model provides a mounting structure of IGBT through the clamp plate that adopts the plastics material and the cooperation retaining member, the retaining member pays so that through fixed ear and aluminum sheet lock the plastics clamp plate supports to lean on in the IGBT on the surface, and the plastics clamp plate is surface contact with the IGBT surface moreover to this replaces current mounting structure, and the clamp plate of plastics material not only can play insulating effect, and the working of plastics can reduce the rigidity effort when with IGBT surface contact, simultaneously because the plastics clamp plate is surface contact with the IGBT surface, has increased area of contact, has reduced pressure, makes whole atress balanced, is difficult for causing the damage to the IGBT surface.

Drawings

Fig. 1 is an exploded view of the IGBT mounting structure according to the present invention;

fig. 2 is a plan view of the IGBT mounting structure according to the present invention;

fig. 3 is a back view of the IGBT mounting structure of the present invention;

fig. 4 is a sectional view showing the IGBT mounting structure of the present invention;

fig. 5 is a sectional view showing the mounting structure of the IGBT according to the present invention;

description of reference numerals:

1. a ceramic plate; 2. an IGBT; 21. a pin; 3. a plastic press plate; 31. fixing the lug; 32. a frame body; 321. a hollowed-out portion; 33. a hollow positioning column; 331. a limiting groove.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Please refer to fig. 1 to 5 for showing, the utility model discloses a PTC heater is applied to IGBT's mounting structure, the PTC heater includes aluminum sheet and potsherd, the potsherd is located on the aluminum sheet, IGBT locates on the potsherd, mounting structure includes plastic pressing plate and retaining member, plastic pressing plate's relative both ends are equipped with fixed ear respectively, the retaining member pays so that through fixed ear and aluminum sheet lock plastic pressing plate supports to lean on in IGBT on the surface.

From the above description, the beneficial effects of the present invention are:

the utility model provides a IGBT's mounting structure, through the clamp plate that adopts the plastics material and the cooperation retaining member, the retaining member pays so through fixed ear and aluminum sheet lock the plastics clamp plate supports to lean on in the IGBT on the surface, and the plastics clamp plate is surface contact with the IGBT surface moreover to this replaces current mounting structure, and the clamp plate of plastics material not only can play insulating effect, and the working of plastics can reduce the rigidity effort when with IGBT surface contact, simultaneously because the plastics clamp plate is surface contact with the IGBT surface, has increased area of contact, has reduced pressure, makes whole atress balanced, is difficult for causing the damage to the IGBT surface.

From the above description, the hollow positioning column not only plays a role in protecting the IGBT pins, but also plays a role in positioning, so that the surface of the IGBT can be aligned with the hollow part, and further the effect of balancing stress is achieved.

Furthermore, each IGBT is provided with three hollow positioning columns, a limiting groove is formed between every two adjacent hollow positioning columns, and the groove width of each limiting groove is matched with the width of each pin of the IGBT.

As can be seen from the above description, by forming the stopper groove, more accurate positioning is possible.

From the above description, the horn hole plays a guiding role, and can also adjust the bending angle of the IGBT terminal, so as to make up for the problem of insufficient bending angle in the past.

As can be seen from the above description, one frame body can fix four IGBT devices at the same time, and the mounting is convenient.

Further, the thickness range of the plastic pressing plate is 2.0mm-2.5mm.

Further, the thickness of the plastic pressing plate is 2.3mm.

As can be seen from the above description, the plastic pressing plate has a thickness ranging from 2.0mm to 2.5mm, preferably 2.3mm, and is made of nylon and 30 glass fibers, so that the strength of the pressing plate is increased, the deformation is reduced, and the fixing area is increased.

Referring to fig. 1 to 5, a first embodiment of the present invention is:

the utility model discloses a PTC heater is applied to IGBT's mounting structure, PTC heater includes aluminum sheet and potsherd 1, potsherd 1 is located on the aluminum sheet, IGBT 2 is located on the potsherd, mounting structure includes plastic pressing plate 3 and retaining member, plastic pressing plate 3's relative both ends are equipped with fixed ear 31 respectively, and fixed ear 31 is integrated into one piece on the plastic pressing plate lateral wall, has the internal thread. Each end of the plastic pressing plate 3 is provided with two fixing lugs which are arranged at intervals. The locking piece is locked with the aluminum sheet through the fixing lug 31 so that the plastic pressing plate is abutted against the surface of the IGBT. The locking piece is a screw.

In this embodiment, the plastic pressing plate 3 includes a frame body 32 and a hollow positioning column 33 connected to one side of the frame body, and one of the frame body 32 has four hollow portions 321 adapted to the surface shape of the IGBT and is arranged side by side in a straight line. The shape of the hollow-out portion 321 is square or rectangular; each IGBT is provided with three hollow positioning columns 33, a limiting groove 331 is formed between adjacent three hollow positioning columns 33, and the groove width of the limiting groove 331 is matched with the width of the pin 21 of the IGBT.

The two ends of the hollow positioning column are penetrated, and the pins of the IGBT penetrate to the outside from one end to the other end of the hollow positioning column. And the through hole in the direction from one end of the hollow positioning column to the other end is a horn hole, namely, the end close to the IGBT is a large-caliber end of the horn hole. The horn hole plays the guide effect, but also can adjust IGBT terminal angle of bending, compensaties the not enough problem of angle of bending before.

The thickness of the plastic pressing plate is 2.3mm. The material is nylon and 30 glass fibers, so that the strength of the pressing plate is improved, the deformation is reduced, and the fixing area is increased.

To sum up, the utility model provides a mounting structure of IGBT through the clamp plate that adopts the plastics material and cooperation retaining member, the retaining member pays so that through fixed ear and aluminum sheet lock the plastics clamp plate supports to lean on in the IGBT on the surface, and the plastics clamp plate is surface contact with the IGBT surface moreover to this replaces current mounting structure, and the clamp plate of plastics material not only can play insulating effect, and the working of plastics can reduce the rigidity effort when with IGBT surface contact, because the plastics clamp plate is surface contact with the IGBT surface simultaneously, has increased area of contact, has reduced pressure, makes whole atress balanced, is difficult for causing the damage to the IGBT surface.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

The utility model provides a PTC heater, including the aluminium sheet, the positive temperature coefficient (IGBT) is installed on the aluminium sheet, the Positive Temperature Coefficient (PTC) is installed on the aluminium sheet, the positive temperature coefficient (IGBT) is installed on the aluminium sheet, its characterized in that, mounting structure includes plastic pressing plate and retaining member, the relative both ends of plastic pressing plate are equipped with fixed ear respectively, the retaining member pays so that through fixed ear and aluminium sheet lock the plastic pressing plate supports and leans on the IGBT is surperficial.
2. The mounting structure of the IGBT according to claim 1, wherein the plastic pressing plate includes a frame body and a hollow positioning column connected to one side of the frame body, the frame body has a hollow portion adapted to a surface shape of the IGBT, two ends of the hollow positioning column penetrate through, and a pin of the IGBT penetrates through to an outside from one end to the other end of the hollow positioning column.
3. The IGBT mounting structure according to claim 2, wherein each IGBT is provided with three hollow positioning columns, a limiting groove is formed between adjacent three hollow positioning columns, and the groove width of the limiting groove is matched with the width of the pins of the IGBT.
4. The IGBT mounting structure according to claim 2, wherein a through hole in a direction from one end of the hollow positioning column to the other end thereof is a horn hole.
5. The IGBT mounting structure according to claim 2, wherein one of the frame bodies is provided with four hollowed-out portions, and arranged side by side in a line.
6. The IGBT mounting structure according to claim 1, wherein the plastic press plate has a thickness in a range of 2.0mm to 2.5mm.
7. The IGBT mounting structure according to claim 6, wherein the plastic press plate has a thickness of 2.3mm.