CN217822739U

CN217822739U - General IGBT module shell

Info

Publication number: CN217822739U
Application number: CN202221925196.1U
Authority: CN
Inventors: 郝文煊; 陆均尧; 张鹏
Original assignee: Shandong Sli Microelectronics Co ltd
Current assignee: Shandong Sli Microelectronics Co ltd
Priority date: 2022-07-25
Filing date: 2022-07-25
Publication date: 2022-11-15
Anticipated expiration: 2032-07-25

Abstract

The utility model provides a general type's IGBT module shell, including the bottom plate, the top fixed mounting of bottom plate has copper-clad ceramic substrate, and copper-clad ceramic substrate's top fixed mounting has the chip, and the copper-plated aluminum sheet electric connection at bonding wire and stitch top is passed through at the top of chip, and the avris at bottom plate top is equipped with the installation casing, is equipped with auxiliary assembly on the inner wall of installation casing. The utility model discloses: insert spout and two draw-in grooves through two bar fixture blocks of stitch cooperation to it is fixed with the probe on the stitch, because the copper-plated aluminum sheet on probe surface is connected with the stitch, can supply the inside chip of module and external connection, through the stitch installation design of array on the installation shells inner wall, can adjust the position of stitch according to different encapsulation, also can increase and decrease the quantity of stitch according to the different power of module, thereby improve the commonality of shell, avoid the unable condition of producing of certain shell goods absolutely, reduce cost.

Description

General IGBT module shell

Technical Field

The utility model belongs to the technical field of the IGBT module, concretely relates to IGBT module shell of general type.

Background

The IGBT module is a power module formed by Insulated Gate Bipolar Transistors (IGBTs), and an IGBT module shell is an indispensable composition structure of the IGBT module.

The application number is "CN202022320456.X", and the "IGBT module packaging shell" is also an increasingly mature technology, and comprises a shell body, wherein a first plug-in hole corresponding to a power terminal and a second plug-in hole corresponding to a signal terminal are arranged on the shell body, a nut groove corresponding to the power terminal is arranged on the shell body, a wide sealing glue position bottom corner used for being connected with a bottom plate is arranged at the lower part of the shell body, bone position columns used for reducing shell body deformation are formed on the inner wall of the shell body, the nut groove is fixed with a edged nut through insulating glue for fixing screws and bent power terminals, the first plug-in hole comprises two vertically arranged first plug-in holes and one transversely arranged first plug-in hole, the second plug-in hole is 4 vertically arranged, the bone position columns comprise 4 corresponding to the inner side walls arranged on the front and back of the shell body, mounting holes used for being connected with the bottom plate are arranged on the shell body, the shell body is simple in structure, good sealing performance between the shell body and the bottom plate is maintained after mounting, because the IGBT modules are different in different packaging, different types are fixed with different shells, and the shells are designed, and the number of the shells is the same, so that the IGBT module packaging shell is different, and the IGBT module packaging shell is applicable to various general IGBT module packaging shell, and the IGBT module.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a IGBT module shell of general type aims at solving the problem of the unable position of solving the stitch when the installation of the IGBT module shell among the prior art, range and number difference nature.

In order to achieve the above purpose, the utility model provides a following technical scheme: a universal IGBT module shell comprises a bottom plate, wherein a copper-clad ceramic substrate is fixedly mounted at the top of the bottom plate, a chip is fixedly mounted at the top of the copper-clad ceramic substrate, the top of the chip is electrically connected with a copper-clad aluminum sheet at the top of a pin through a bonding wire, an installation shell is arranged on the side of the top of the bottom plate, and an auxiliary assembly is arranged on the inner wall of the installation shell;

the auxiliary assembly is including installing a plurality of installation piece on installation shells inner wall, a plurality of equidistant setting forms the spout between the installation piece, the middle part fixed mounting of installation piece one side bottom has the fixed block, the draw-in groove has all been seted up at the middle part of fixed block both sides, a plurality of the height that highly is less than the installation shell of installation piece.

In order to make the fixed mounting casing of being convenient for, as the utility model relates to an it is preferred, the arc wall has all been seted up to four edges of installation casing, the threaded hole is seted up at the inner wall top of arc wall, the inner wall of screw hole passes through fastening screw and sets up the mounting hole threaded connection that has with the bottom plate top.

In order to make the cooperation auxiliary assembly install, conduct the utility model relates to an it is preferred, the equal fixed mounting in bottom of four corner inboards of installation casing has two connecting blocks, two the opposite side of connecting block respectively with fixed block fixed connection.

In order to make inside chip and outside electric connection, as the utility model relates to an it is preferred, the copper-plated aluminum sheet sets up on the probe surface, the bottom and the stitch fixed connection of probe.

In order to make be convenient for install the stitch, as the utility model relates to an it is preferred, the equal fixed mounting in both sides of stitch has the bar fixture block, the surface of bar fixture block is connected with the inner wall block of draw-in groove.

In order to make it convenient to install the stitch, as the utility model relates to an it is preferred, the inner wall of spout and one side sliding connection of stitch.

In order to make the leakproofness of assurance module bottom, as the utility model relates to an it is preferred, the bottom fixed mounting of installation casing has seal ring, seal ring's bottom and the top fixed connection of bottom plate.

In order to make the frictional force when being convenient for increase the installation stitch, guarantee the stability of installation back stitch, as the utility model relates to an it is preferred, fixed mounting has the friction pad on the inner wall of spout, the surface of friction pad and the surface sliding connection of stitch.

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

1) The pins are matched with the two strip-shaped clamping blocks to be inserted into the sliding groove and the two clamping grooves, so that the probes on the pins are fixed, and the chips in the module can be connected with the outside due to the connection of the copper-plated aluminum sheets on the surfaces of the probes and the pins;

2) Through the stitch installation design of array on the installation shells inner wall, can be according to the position of different encapsulation adjustment stitches, also can be according to the quantity of the different power increase and decrease stitches of module to improve the commonality of shell, avoid the unable condition of producing of certain shell outage, reduce cost.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a schematic view of the structure of the bottom plate and the pins in embodiment 1 of the present invention;

fig. 3 is a schematic structural view of a mounting housing according to embodiment 1 of the present invention;

fig. 4 is a schematic structural view of an auxiliary assembly according to embodiment 1 of the present invention;

fig. 5 is a schematic structural diagram of embodiment 2 of the present invention.

In the figure: 1. a base plate; 11. a copper-clad ceramic substrate; 12. a chip; 13. a bonding wire; 14. mounting holes; 2. a stitch; 21. plating copper aluminum sheets; 22. a probe; 23. a strip-shaped fixture block; 3. installing a shell; 31. an arc-shaped slot; 32. a threaded hole; 33. a fastening screw; 34. connecting blocks; 35. a sealing gasket; 4. an auxiliary component; 41. mounting a block; 42. a chute; 43. a fixed block; 44. a card slot; 5. a friction pad.

Detailed Description

The embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention:

example 1

Referring to fig. 1-4, the present invention provides the following technical solutions: a universal IGBT module shell comprises a bottom plate 1, wherein a copper-clad ceramic substrate 11 is fixedly mounted at the top of the bottom plate 1, a chip 12 is fixedly mounted at the top of the copper-clad ceramic substrate 11, the top of the chip 12 is electrically connected with a copper-clad aluminum sheet 21 at the top of a pin 2 through a bonding wire 13, an installation shell 3 is arranged on the side of the top of the bottom plate 1, and an auxiliary assembly 4 is arranged on the inner wall of the installation shell 3;

auxiliary assembly 4 is including installing a plurality of installation piece 41 on the installation casing 3 inner wall, and equidistant setting forms spout 42 between a plurality of installation piece 41, and the middle part fixed mounting of installation piece 41 one side bottom has fixed block 43, and draw-in groove 44 has all been seted up at the middle part of fixed block 43 both sides, and the height that highly is less than installation casing 3 of a plurality of installation piece 41.

During the specific use, 41 equidistant spout 42 that form of a plurality of installation piece, draw-in groove 44 has all been seted up at the middle part of fixed block 43 both sides, insert the stitch 2 in the spout 42, cooperate two bar fixture blocks 23 and two draw-in grooves 44 blocks to be connected, thereby fixed with stitch 2, cooperation stitch 2 top has copper facing aluminum sheet 21's probe 22 and external electric connection, through changing stitch 2 male position and quantity, thereby be convenient for adapt to the shell of different encapsulation and the IGBT module of different power.

In this embodiment, arc wall 31 has all been seted up at four edges of installation casing 3, and threaded hole 32 has been seted up at the inner wall top of

arc wall

31, and 14 threaded connection of mounting hole that have are seted up through fastening screw 33 and bottom plate 1 top to the inner wall of threaded hole 32.

When the mounting device is used specifically, the mounting shell 3 and the bottom plate 1 are fixed in a threaded manner by utilizing the threaded holes 32 on the inner wall of the arc-shaped groove 31 to match with the fastening screws 33 and the mounting holes 14.

In this embodiment, the bottom of the inner sides of the four corners of the mounting case 3 is fixedly provided with two connecting blocks 34, and the other sides of the two connecting blocks 34 are respectively and fixedly connected with the fixing block 43.

During the specific use, utilize two connecting blocks 34 respectively with fixed block 43 fixed connection, be convenient for increase the stability of two fixed blocks 43 of installation 3 inner wall edge, be convenient for simultaneously increase the intensity of arc wall 31 inner wall.

In this embodiment, the copper-plated aluminum sheet 21 is disposed on the surface of the probe 22, and the bottom of the probe 22 is fixedly connected to the pins 2.

During the specific use, be equipped with copper facing aluminum sheet 21's probe 22 fixed mounting on stitch 2 on the surface, be convenient for the inside chip 12 and the copper facing aluminum sheet 21 electric connection of IGBT module.

In this embodiment, the two sides of the pin 2 are fixedly provided with the strip-shaped fixture block 23, and the surface of the strip-shaped fixture block 23 is clamped and connected with the inner wall of the clamping groove 44.

During the specific use, two bar fixture blocks 23 are connected with two draw-in grooves 44 block respectively, are convenient for carry out the block with stitch 2 fixedly.

In this embodiment, the inner wall of the sliding groove 42 is slidably connected to one side of the pin 2.

During specific use, one side of the pin 2 is inserted into the sliding groove 42, so that the pin 2 is conveniently installed into the installation shell 3.

In this embodiment, a sealing gasket 35 is fixedly installed at the bottom of the installation housing 3, and the bottom of the sealing gasket 35 is fixedly connected with the top of the bottom plate 1.

When the IGBT module sealing device is used specifically, the sealing performance of the joint of the installation shell 3 and the bottom plate 1 is convenient to guarantee by using the sealing washer 35, so that parts inside the IGBT module are protected.

In this embodiment, the inner wall of the sliding groove 42 is fixedly provided with a friction pad 5, and the surface of the friction pad 5 is slidably connected with the surface of the pin 2.

When the special fixing device is used, the friction pad 5 on the inner wall of the sliding groove 42 is utilized, so that the friction force with the surface of the pin 2 is enhanced conveniently, and the stability of the pin 2 after installation is ensured.

The working principle is as follows: during the use, at first with screw hole 32 cooperation fastening screw 33 and mounting hole 14 on the arc wall 31 inner wall, will install casing 3 and bottom plate 1 thread tightening, a plurality of installation piece 41 on the installation casing 3 inner wall is equidistant to form spout 42, some draw-in grooves 44 are all seted up at the middle part of fixed block 43 both sides, then insert in the spout 42 with stitch 2, cooperate two bar fixture blocks 23 and two draw-in grooves 44 block connection, thereby it is fixed with stitch 2, cooperation stitch 2 top has copper facing aluminum sheet 21's probe 22 and external electric connection, through changing stitch 2 male position and quantity, thereby be convenient for adapt to the shell of different encapsulation and the IGBT module of different power, thereby be convenient for reduce failure rate and reduce cost.

Example 2

Referring to fig. 5, in order to further ensure the stability of the structure after installation, the present embodiment has the following distinctive features: in this embodiment, the inner wall of the sliding groove 42 is fixedly provided with a friction pad 5, and the surface of the friction pad 5 is slidably connected with the surface of the pin 2.

When the device is used specifically, the friction pad 5 on the inner wall of the sliding groove 42 is utilized, so that the friction force with the surface of the pin 2 is enhanced conveniently, and the stability of the pin 2 after being installed is ensured.

Claims

1. The utility model provides a general type's IGBT module shell, includes bottom plate (1), its characterized in that: a copper-clad ceramic substrate (11) is fixedly mounted on the top of the bottom plate (1), a chip (12) is fixedly mounted on the top of the copper-clad ceramic substrate (11), the top of the chip (12) is electrically connected with a copper-clad aluminum sheet (21) on the top of the pin (2) through a bonding wire (13), an installation shell (3) is arranged on the edge side of the top of the bottom plate (1), and an auxiliary assembly (4) is arranged on the inner wall of the installation shell (3);

auxiliary assembly (4) are including installing a plurality of installation piece (41) on installation casing (3) inner wall, a plurality of equal interval sets up between installation piece (41) and forms spout (42), the middle part fixed mounting of installation piece (41) one side bottom has fixed block (43), draw-in groove (44), a plurality of have all been seted up at the middle part of fixed block (43) both sides installation piece (41) highly be less than the height of installation casing (3).

2. The IGBT module housing of claim 1, of the generic type, characterized in that: arc-shaped grooves (31) are formed in four corners of the mounting shell (3), threaded holes (32) are formed in the tops of the inner walls of the arc-shaped grooves (31), and the inner walls of the threaded holes (32) are in threaded connection with mounting holes (14) formed in the tops of the base plates (1) through fastening screws (33).

3. The IGBT module housing of claim 1, of the generic type, characterized in that: the bottom of four corner inboards of installation casing (3) is all fixed mounting has two connecting blocks (34), two the opposite side of connecting block (34) respectively with fixed block (43) fixed connection.

4. The IGBT module housing of claim 1, of the generic type, characterized in that: copper facing aluminum sheet (21) set up on probe (22) surface, the bottom and stitch (2) fixed connection of probe (22).

5. The IGBT module housing of the generic type of claim 1, characterized in that: the two sides of the pin (2) are fixedly provided with strip-shaped fixture blocks (23), and the surfaces of the strip-shaped fixture blocks (23) are connected with the inner wall of the clamping groove (44) in a clamping mode.

6. The IGBT module housing of claim 1, of the generic type, characterized in that: the inner wall of the sliding groove (42) is in sliding connection with one side of the pin (2).

7. The IGBT module housing of the generic type of claim 1, characterized in that: the bottom of the mounting shell (3) is fixedly provided with a sealing gasket (35), and the bottom of the sealing gasket (35) is fixedly connected with the top of the bottom plate (1).

8. The IGBT module housing of claim 1, of the generic type, characterized in that: the inner wall of the sliding groove (42) is fixedly provided with a friction pad (5), and the surface of the friction pad (5) is connected with the surface of the pin (2) in a sliding manner.