CN217007576U

CN217007576U - IGBT pin connector, connecting system and detection system

Info

Publication number: CN217007576U
Application number: CN202220010836.XU
Authority: CN
Inventors: 焦双凤; 余辰将; 王民
Original assignee: Zhixin Semiconductor Co ltd
Current assignee: Zhixin Semiconductor Co ltd
Priority date: 2022-01-05
Filing date: 2022-01-05
Publication date: 2022-07-19
Anticipated expiration: 2032-01-05

Abstract

The utility model relates to an IGBT pin connector, a connecting system and a detection system, wherein the IGBT pin connector comprises a connecting cylinder, a clamping structure and a conductor; the connecting column is used for being connected with a pin of the IGBT module; the clamping structure is connected with the connecting column body and is used for being clamped in a connecting hole of the PCB; the electric conductor is arranged on the outer peripheral sides of the connecting cylinder and the clamping structure; therefore, the utility model does not need frequent welding and can be convenient for assembling and disassembling the PCB and the IGBT module.

Description

IGBT pin connector, connecting system and detection system

Technical Field

The utility model relates to the technical field of connection of an IGBT module and a PCB (printed circuit board), in particular to an IGBT pin connector, a connection system and a detection system.

Background

An Insulated Gate Bipolar Transistor (IGBT) which is a composite fully-controlled voltage-driven power semiconductor device consisting of a Bipolar Junction Transistor (BJT) and a Metal Oxide Semiconductor (MOS); pcb (printed Circuit board), a printed Circuit board, is an important electronic component, and is a carrier for electrical connection of electronic components; the IGBT module has a plurality of test pins, the PCB circuit board is welded on the plurality of pins on the IGBT module under the common condition, when a drive circuit for the IGBT module is subjected to a double-pulse test experiment, when a device of the PCB circuit board is damaged or other abnormal conditions need to separate the PCB circuit board from the IGBT module, because the welding pins are more on the same plane, the PCB circuit board can only be taken down by cleaning tin of each pin by a tin gun and a soldering iron, and the taken-down process is very high in temperature for the PCB circuit board and the IGBT pins, so that the PCB circuit board or the IGBT module is easily damaged and scrapped.

Therefore, in order to solve the above problems, a scheme needs to be designed, frequent welding is not needed, and meanwhile, the assembly and disassembly of the PCB and the IGBT module are facilitated.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an IGBT pin connector, a connecting system and a detection system, which do not need frequent welding and can be convenient for assembling and disassembling a PCB (printed circuit board) and an IGBT module.

On one hand, the embodiment of the utility model provides an IGBT pin connector which comprises a connecting cylinder, a clamping structure and a conductor; the connecting column is used for being connected with a pin of the IGBT module; the clamping structure is connected with the connecting column body and is used for being clamped in a connecting hole of the PCB; the electric conductor is arranged on the periphery side of the connecting column body and the clamping structure.

In some embodiments, the connecting column is integrally connected with the clamping structure.

In some embodiments, the connecting cylinder is a solid cylindrical structure; connecting grooves are formed in the connecting columns, extend to the bottoms of the connecting columns along the axial direction of the connecting columns, and are used for correspondingly inserting pins of the IGBT modules.

In some embodiments, the clamping structure is a 8-shaped structure; the joint structure include in proper order with connect the cylinder and connect, and be used for locating the first joint portion of the bottom of the connecting hole of PCB circuit board for the second joint portion in the connecting hole of PCB circuit board is located to the card, and is used for locating the third joint portion at the top of the connecting hole of PCB circuit board.

In some embodiments, the width value of the first clamping part is used to be larger than the diameter value of the connecting hole of the PCB; the width value of the second clamping part is larger than the diameter value of a connecting hole of the PCB; the width value of the third clamping part is larger than the diameter value of the connecting hole of the PCB.

In some embodiments, the IGBT pin connector further includes a pin structure disposed on top of the third clamping portion and integrally connected with the third clamping portion; the electric conductor is arranged on the outer peripheral side of the needle head structure, and the needle head structure is used for being connected with a voltage probe of an oscilloscope.

In some embodiments, the needle structure is disposed along the axial direction of the clamping structure, and includes a first needle portion connected to the third clamping portion, a second needle portion configured as an integral bending structure, and a third needle portion disposed obliquely along the axial direction.

In a second aspect, an embodiment of the present invention further provides an IGBT pin connection system, including an IGBT module, a PCB, and the IGBT pin connector disposed between the IGBT module and the PCB; the IGBT module comprises a circuit board main body and a plurality of pins arranged on the circuit board main body; the PCB comprises a circuit board main body arranged opposite to the circuit board main body and a plurality of connecting holes arranged on the circuit board main body; the connecting columns are connected with the pins in a one-to-one corresponding mode, and the clamping structures are clamped in the connecting holes in a one-to-one corresponding mode.

In some embodiments, a plurality of the stitches are arranged to extend in a vertical direction.

In a third aspect, an embodiment of the present invention further provides an IGBT pin detection system, which includes an oscilloscope and the IGBT pin connection system described above, where the needle structure is connected to a voltage probe of the oscilloscope.

The technical scheme provided by the utility model has the beneficial effects that: when assembling IGBT module and PCB circuit board, be connected the stitch of connecting subject and IGBT module, locate the connecting hole of PCB circuit board with joint structure card again in, consequently this IGBT stitch connector can replace original welding assembly mode, need not frequent welding, can be convenient for the equipment and the split of PCB circuit board and IGBT module, not fragile PCB circuit board and IGBT module simultaneously, IGBT stitch connector reuse.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an IGBT pin connector according to an embodiment of the present invention;

fig. 2 is an exploded structural schematic diagram of an IGBT pin connection system according to an embodiment of the present invention.

In the figure: 100. connecting the columns; 200. a clamping structure; 210. a first clamping part; 220. a second clamping part; 230. a third clamping connection part; 300. a needle head structure; 310. a first needle portion; 320. a second tip segment; 330. a third needle head; 400. an IGBT module; 410. a circuit board main body; 420. a stitch; 500. a PCB circuit board; 510. a circuit board main body; 520. and connecting the holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1, an embodiment of the present invention provides an IGBT pin connector, including a connection pillar 100, a clamping structure 200, and a conductor; the connection post 100 is used for connecting with a pin 420 of the IGBT module 400; the clamping structure 200 is connected with the connecting column 100 and is used for being clamped in a connecting hole 520 of the PCB 500; and the conductor is arranged on the outer periphery of the connecting column body 100 and the clamping structure 200.

Specifically, in this embodiment, simultaneously refer to fig. 2 and show, when assembling IGBT module 400 and PCB circuit board 500, be connected connecting body 100 with IGBT module 400's stitch 420, locate the joint structure 200 card in PCB circuit board 500's connecting hole 520 again, therefore this IGBT stitch connector can replace original welding assembly methods, need not frequent welding, the equipment and the split of PCB circuit board 500 and IGBT module 400 of can being convenient for, not fragile PCB circuit board 500 and IGBT module 400 simultaneously, IGBT stitch connector reuse.

Optionally, the connecting cylinder 100 and the clamping structure 200 are integrally formed. In order to facilitate the clamping of the clamping structure 200 in the PCB 500 and facilitate the processing, the connecting column 100 and the clamping structure 200 are integrally formed and connected by a metal copper material, and the conductor is plated on the surface of the metal copper material.

Optionally, in order to facilitate connection between the connection pillar 100 and the IGBT module 400, the connection pillar 100 has a solid cylindrical structure; the connecting column 100 is provided with a connecting groove therein, the connecting groove extends to the bottom of the connecting column 100 along the axial direction of the connecting column 100, and the connecting groove is used for correspondingly inserting the pin 420 of the IGBT module 400.

Optionally, the clamping structure 200 is an 8-shaped structure; the clamping structure 200 sequentially comprises a first clamping portion 210 connected with the connection column 100 and used for being arranged at the bottom of the connection hole 520 of the PCB 500, a second clamping portion 220 used for being clamped in the connection hole 520 of the PCB 500, and a third clamping portion 230 used for being arranged at the top of the connection hole 520 of the PCB 500.

After the pins 420 of the connecting column 100 and the IGBT module 400 are assembled, when the clamping structure needs to be clamped in the connecting hole 520 of the PCB 500, since the clamping structure 200 is made of a metal copper material, a force is applied to the third connecting portion 230 of the clamping structure 200 to deform the third connecting portion, the third clamping portion 230 is inserted into the connecting hole 520 of the PCB 500 until the second clamping portion 220 is clamped in the connecting hole 520 of the PCB 500, the pressing force on the third connecting portion 230 is released, the third connecting portion 230 can recover to the original shape, and the assembly of the IGBT module 400 and the PCB 500 can be completed.

Optionally, in order to ensure that the second clamping portion 220 is well contacted with the connecting hole 520 and can be smoothly clamped after the first clamping portion 210 is deformed; the width of the first clamping portion 210 is larger than the diameter of the connecting hole 520 of the PCB 500; the width of the second clamping portion 220 is larger than the diameter of the connecting hole 520 of the PCB 500; the width of the third clamping part 230 is used to be greater than the diameter of the connection hole 520 of the PCB circuit board 500.

Optionally, when the pin 420 of the IGBT module 400 needs to be detected, the IGBT pin connector further includes a needle structure 300 that is disposed on the top of the third fastening portion 230 and is integrally connected with the third fastening portion 230, a conductive body is disposed on the outer peripheral side of the needle structure 300, and the needle structure 300 is used for being connected with a voltage probe of an oscilloscope, at this time, the detection signal waveform of the pin 420 can be directly detected through the needle structure 300.

Optionally, in order to facilitate the needle structure 300 to be more stably connected to a voltage probe of an oscilloscope, the needle structure 300 is axially extended along the snap structure 200, and sequentially includes a first needle portion 310 connected to the third snap portion 230, a second needle portion 320 formed as an integral bent structure, and a third needle portion 330 inclined in the axial direction.

The embodiment of the utility model also provides an IGBT pin connecting system, which comprises an IGBT module 400, a PCB 500 and a plurality of IGBT pin connectors arranged between the IGBT module 400 and the PCB 500; the IGBT module 400 includes a circuit board body 410, a plurality of pins 420 provided on the circuit board body 410; the PCB 500 includes a circuit board body 510 disposed opposite to the circuit board body 410, and a plurality of connection holes 520 disposed on the circuit board body 510; the connecting columns 100 are correspondingly connected with the pins 420, and the clamping structures 200 are correspondingly clamped in the connecting holes 520. Optionally, the plurality of pins 420 are all arranged to extend in the vertical direction.

When the IGBT module 400 and the PCB circuit board 500 are assembled, the connecting body 100 is first connected to the pin 420 of the IGBT module 400, that is, the connecting groove of the connecting post 100 is correspondingly inserted into the pin 420 of the IGBT module 400; the clamping structure 200 is clamped in the connecting hole 520 of the PCB 500, since the clamping structure 200 is made of a metal copper material, a force is applied to the third connecting portion 230 of the clamping structure 200 to deform the third connecting portion 230, at this time, the third clamping portion 230 is inserted into the connecting hole 520 of the PCB 500 until the second clamping portion 220 is clamped in the connecting hole 520 of the PCB 500, at this time, the pressing force on the third connecting portion 230 is released, the third connecting portion 230 can be restored to the original shape, and the assembly of the IGBT module 400 and the PCB 500 can be completed. Therefore, the IGBT pin connector can replace the original welding assembly mode, frequent welding is not needed, the assembly and disassembly of the PCB circuit board 500 and the IGBT module 400 can be facilitated, meanwhile, the PCB circuit board 500 and the IGBT module 400 are not easy to damage, and the IGBT pin connector can be repeatedly used.

The embodiment of the utility model also provides an IGBT pin detection system which is characterized by comprising an oscilloscope and the IGBT pin connection system, wherein the needle head structure 300 is connected with a voltage probe of the oscilloscope. When the pin 420 of the IGBT module 400 needs to be detected, the needle structure 300 is connected to a voltage probe of an oscilloscope, that is, the detection signal waveform of the pin 420 can be directly detected through the needle structure 300.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly and encompass, for example, both fixed and removable connections as well as integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It is noted that, in the present application, relational terms such as "first" and "second", and the like, are 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.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An IGBT pin connector, comprising:

a connection post (100) for connecting with a pin (420) of the IGBT module (400);

the clamping structure (200) is connected with the connecting column body (100) and is used for being clamped in a connecting hole (520) of the PCB (500); and the number of the first and second groups,

the conductor is arranged on the outer peripheral sides of the connecting cylinder (100) and the clamping structure (200).

2. The IGBT pin connector according to claim 1, wherein the connecting column (100) is integrally connected to the clamping structure (200).

3. The IGBT pin connector according to claim 1, wherein the connecting column (100) is a solid cylindrical structure;

the connecting structure is characterized in that a connecting groove is formed in the connecting column body (100), the connecting groove axially extends to the bottom of the connecting column body (100) along the connecting column body (100), and the connecting groove is used for being correspondingly inserted with a pin (420) of the IGBT module (400).

4. The IGBT pin connector according to claim 1, wherein the clamping structure (200) is a "8" shaped structure;

joint structure (200) include in proper order with connect cylinder (100) connect, and be used for locating first joint portion (210) of the bottom of connecting hole (520) of PCB circuit board (500), be arranged in the second joint portion (220) of card in connecting hole (520) of PCB circuit board (500) and be arranged in third joint portion (230) of the top of connecting hole (520) of PCB circuit board (500).

5. The IGBT pin connector of claim 4, wherein the width of the first clamping part (210) is larger than the diameter of the connecting hole (520) of the PCB circuit board (500);

the width value of the second clamping part (220) is larger than the diameter value of a connecting hole (520) of the PCB (500);

the width value of the third clamping part (230) is larger than the diameter value of the connecting hole (520) of the PCB circuit board (500).

6. The IGBT pin connector according to claim 4, further comprising a pin structure (300) disposed on top of the third clamping portion (230) and integrally connected with the third clamping portion (230);

the conductive body is arranged on the outer peripheral side of the needle head structure (300), and the needle head structure (300) is used for being connected with a voltage probe of an oscilloscope.

7. The IGBT pin connector according to claim 6, wherein the pin structure (300) extends axially along the latch structure (200) and comprises a first pin portion (310) connected to the third latch portion (230), a second pin portion (320) formed as an integral bent structure, and a third pin portion (330) inclined axially.

8. An IGBT pin connection system, comprising:

an IGBT module (400) comprising a circuit board body (410), a plurality of pins (420) provided on the circuit board body (410);

the PCB circuit board (500) comprises a circuit board main body (510) arranged opposite to the circuit board main body (410), and a plurality of connecting holes (520) arranged on the circuit board main body (510); and the number of the first and second groups,

the IGBT pin connector is arranged between the IGBT module (400) and the PCB (500), the plurality of connecting columns (100) are connected with the plurality of pins (420) in a one-to-one correspondence mode, and the plurality of clamping structures (200) are clamped in the plurality of connecting holes (520) in a one-to-one correspondence mode.

9. The IGBT pin connection system according to claim 8, wherein a plurality of the pins (420) are arranged to extend in a vertical direction.

10. An IGBT pin inspection system comprising an oscilloscope and the IGBT pin connection system of claim 9, the needle structure (300) being connected to a voltage probe of the oscilloscope.