CN113809025A - Radiator, thyristor group string module and crimping method thereof - Google Patents
Radiator, thyristor group string module and crimping method thereof Download PDFInfo
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- CN113809025A CN113809025A CN202110928669.7A CN202110928669A CN113809025A CN 113809025 A CN113809025 A CN 113809025A CN 202110928669 A CN202110928669 A CN 202110928669A CN 113809025 A CN113809025 A CN 113809025A
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- thyristor
- radiator
- positioning holes
- heat sink
- crimping
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- 238000002788 crimping Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000004888 barrier function Effects 0.000 claims description 16
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/367—Cooling facilitated by shape of device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/40—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs
- H01L23/4006—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs with bolts or screws
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/40—Mountings or securing means for detachable cooling or heating arrangements ; fixed by friction, plugs or springs
- H01L23/4093—Snap-on arrangements, e.g. clips
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The invention discloses a radiator, a thyristor group string module using the radiator and a crimping method thereof, wherein at least one group of positioning holes are arranged on a crimping surface of the radiator contacted with a thyristor, each group at least comprises two positioning holes, the positioning holes are used for inserting positioning pins, when the thyristor is arranged at the center of the crimping surface, the edges of the positioning holes in the same group are tangent to the edges of the thyristor, and the distance between the positioning holes in the same group is smaller than the diameter of the thyristor. Adopt the thyristor group string module of above-mentioned radiator, adopt the thyristor of cake shape to rely on the position of two locating pins location thyristors, when guaranteeing that the thyristor can be located the center of radiator, convenient to detach easily fixes a position, guarantees the uniformity of crimping, improves the packaging efficiency, is convenient for assemble and disassemble in narrow and small regions such as rack simultaneously.
Description
Technical Field
The invention relates to the technical field of crimping of power modules, in particular to a radiator, a thyristor group string module and a crimping method thereof.
Background
In high-power converter equipment, switch devices such as diodes, thyristors, IGCTs, IEGT and the like mostly adopt compression joint type devices, and the compression joint type devices are used as current-carrying lead-out bars while heat dissipation is carried out on a radiator at two sides of the compression joint type devices. The group series compression joint mode has small space size and high power density, but the technological level requirement is also high. The technical personnel operation level directly influences the performance consistency of whole construction efficiency and batch equipment in production assembly and later maintenance processes, the heat radiation effect is further influenced by the sealing performance of a radiator air duct, the output of the equipment is further influenced by the parallelism of a radiator leading-out row and an external wiring row, the size of a contact surface of a current-carrying lap joint surface and mechanical stress are influenced by the parallelism of the radiator leading-out row and the external wiring row, and the heating caused by too small contact surface and the damage caused by too large mechanical stress are main factors of equipment faults.
The positioning of the radiator and the thyristor in the existing crimping mode is realized by inserting a positioning pin into a central hole, one-point positioning is adopted, the central positioning mode needs to be aligned by points in the assembling process, and the efficiency is very low because the binding surface of the thyristor and the radiator is difficult to observe and can only be found by trying, depending on the technical level of an operator. In addition, the positioning pins are inserted into the thyristor and the radiator, so that all the radiators above the thyristor to be dismounted and the thyristor exposed out of the positioning pins need to be lifted to be dismounted when the thyristor is dismounted in maintenance, and the valve group assembled in the screen cabinet is difficult to realize.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a radiator which can reduce the positioning difficulty of a thyristor and improve the crimping efficiency of a thyristor string module.
Another objective of the present invention is to provide a thyristor string module having the above heat sink and a crimping method thereof.
The technical scheme is as follows: according to the radiator, at least one group of positioning holes are formed in the pressure welding surface of the radiator, which is in contact with the thyristor, each group at least comprises two positioning holes, the positioning holes are used for inserting positioning pins, when the thyristor is arranged in the center of the pressure welding surface, the edges of the positioning holes in the same group are tangent to the edges of the thyristor, and the distance between the positioning holes in the same group is smaller than the diameter of the thyristor.
Furthermore, two groups of positioning holes are arranged on the crimping surface, and when the first end surface of the thyristor is arranged at the center of the crimping surface, the edge of the first group of positioning holes is tangent to the edge of the thyristor; when the second end surface of the thyristor is arranged at the center of the crimping surface, the edge of the second group of positioning holes is tangent to the edge of the thyristor; wherein the area of the first end surface is larger than the area of the second end surface.
Furthermore, the positioning hole is arranged on the side, back to the radiator, of the current-carrying lead-out outlet.
Furthermore, the crimping surface and the air inlet and outlet cross section of the radiator are both rectangular, and the air inlet and outlet cross section is perpendicular to the crimping surface.
The thyristor string module comprises an upper clamping piece, a lower clamping piece, a connecting piece for connecting the upper clamping piece and the lower clamping piece, a thyristor arranged between the upper clamping piece and the lower clamping piece and the radiator.
Further, still including being used for adjusting first insulating barrier and the second insulating barrier of radiator, the second insulating barrier set up in on the first insulating barrier, the adjacent both sides of radiator respectively with first insulating barrier with the second insulating barrier closely laminates, be equipped with the ventilation hole on the first insulating barrier, the thyristor is the cake shape.
Furthermore, the connecting piece is a pull rod, and the pull rod is connected with the upper clamping piece and the lower clamping piece through bolts.
Furthermore, the upper clamping piece and the lower clamping piece are connected through four mutually parallel pull rods.
Furthermore, an elastic piece is arranged between the bolt and the upper clamping piece.
Further, the elastic member is a belleville spring.
The invention relates to a crimping method of a thyristor group string module, which specifically comprises the following steps:
1) fixing a first insulating baffle, a second insulating baffle and a lower clamping piece on the jig;
2) placing the radiator to enable the edge of the radiator to be tightly attached to the first insulating baffle and the second insulating baffle;
3) inserting positioning pins into a group of positioning holes on a crimping surface of the radiator, which is required to be tightly attached to the thyristor;
4) pushing the thyristor into the radiator from one side until the edge of the thyristor is tightly attached to the positioning pin;
5) repeating the steps 2) to 4) until all the thyristors (200) are tightly attached to the positioning pins on the corresponding heat radiators (100) and the edges of all the heat radiators (100) are tightly attached to the first insulating baffle (300) and the second insulating baffle (310);
6) and placing the upper clamping piece, connecting the upper clamping piece and the lower clamping piece through a connecting piece, and adjusting the connecting piece to enable the pressure between the upper clamping piece and the lower clamping piece to reach the required value of the module.
Has the advantages that: compared with the prior art, the invention has the following advantages:
1. the position of the thyristor is positioned by the double positioning pins, so that the thyristor can be positioned in the center of the radiator, the thyristor is convenient to disassemble and easy to position, and the crimping consistency is ensured.
2. The cross section of the radiator is in the same plane through the baffle, air leakage of the air duct baffle is avoided, and the small-area contact between the leading-out row and the outside is avoided to increase heat productivity.
Drawings
Fig. 1 is a plan view of a heat sink according to a first embodiment of the present invention;
FIG. 2 is a top view of a heat sink in accordance with a second embodiment of the present invention;
fig. 3 is a crimping top view of a thyristor string module of an embodiment of the invention;
fig. 4 is a side view of a thyristor string module according to an embodiment of the invention.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
Referring to fig. 1, in the heat sink according to the embodiment of the present invention, a group string module for the thyristor 200 is provided with at least one group of positioning holes on a compression joint surface contacting with the thyristor 200, the compression joint surface is an upper end surface or a lower end surface of the heat sink, and each group includes at least two positioning holes. When the thyristor 200 is arranged at the center of the crimping surface, the edges of the positioning holes in the same group are tangent to the edges of the thyristor 200, and the distance between the positioning holes in the same group is smaller than the diameter of the thyristor 200.
According to the radiator of the technical scheme, when the radiator is used for a thyristor group string module, the positioning pin is inserted into the positioning hole belonging to the same group, the thyristor 200 can be pushed onto the radiator 100 in a mode shown in fig. 1, as the thyristor 200 is mostly in a round cake shape, when the thyristor 200 is closely attached to the positioning pin, the thyristor 200 can be just positioned at the center of the radiator 100, compared with the traditional mode that the positioning pin penetrating through the thyristor 200 is arranged at the center of the thyristor 200, the pressing connection surface of the thyristor 200 and the radiator 100 is not required to be observed during installation, the installation efficiency is high, the installation consistency is high, and the fault tolerance rate is high. Compare in the locating pin single-point location that adopts to pass thyristor 200 during the dismantlement, need not to dismantle the locating pin, adjust the pressure between the folder at both ends can, be convenient for assemble and change in narrow and small spaces such as rack.
In practice, in order to distinguish the polarity of the thyristor 200, the end surfaces of the two ends of the thyristor 200 are usually larger and smaller, so accordingly, referring to fig. 2, the crimping surface of the heat sink 100 has two sets of positioning holes, and when the larger first end surface of the thyristor 200 contacts the crimping surface of the heat sink 100, the edge of the first set of positioning holes 110 is tangent to the edge of the thyristor 200; when the smaller second end surface of the thyristor 200 is in contact with the crimping surface of the heat sink 100, the edges of the second set of positioning holes 120 are tangent to the edges of the thyristor 200. The positioning pins can be inserted into the first set of positioning holes 110 or the second set of positioning holes 120 according to actual conditions.
In the thyristor group string module, when the rotation angles of the radiator 100 are not consistent, air leakage occurs at the air duct baffle of the radiator 100, and the contact surface between the current-carrying leading-out row of the radiator 100 and an external copper bar is reduced, so that mechanical stress is concentrated, and the heat productivity is increased. Therefore, in order to overcome the above problems, the heat sink 100 is preferably a regular rectangular heat sink 100, the crimping surface and the cross-section of the air inlet and outlet are both rectangular, and the cross-section of the air inlet and outlet is perpendicular to the crimping surface, so that the angles of the heat sinks 100 of the tandem module are convenient to be consistent by means of baffles and the like. Meanwhile, in order to facilitate the close attachment of an external tool to the radiator 100, the external tool does not block the placement of the thyristor 200, the positioning hole is preferably formed in one side back to the current-carrying lead-out row, the external tool can be tightly attached to the side back to the current-carrying lead-out row to adjust the rotation angle of the radiator 100 of the whole module to be consistent, and the thyristor 200 can be pushed into the radiator from one side of the current-carrying lead-out row to be attached to a positioning pin to achieve positioning.
Referring to fig. 3 and 4, the thyristor 200 string module according to the embodiment of the present invention includes an upper clip 400, a lower clip 410, and a connector connecting the upper clip 400 and the lower clip 410, and the heat sink 100 and the thyristor 200 disposed between the upper clip 400 and the lower clip 410, wherein the thyristor 200 is in a circular cake shape. The heat sink further comprises a first insulating baffle 300 and a second insulating baffle 310, wherein the second insulating baffle 310 is arranged on the first insulating baffle 300, and two adjacent side edges of the heat sink 100 are tightly attached to the first insulating baffle 300 and the second insulating baffle 300 respectively, so that the heat sink 100 is positioned. The connecting member is used for connecting the upper clamp member 400 and the lower clamp member 410, and simultaneously, the pressure between the upper clamp member 400 and the lower clamp member 410 can be adjusted, so that the heat sink 100 and the thyristor 200 are connected in series in a crimping manner to form a converter valve set. The connector may be a tie rod 420 or a fastening strap.
Referring to fig. 4, in the present embodiment, the upper clip 400 and the lower clip 410 are connected by four parallel pull rods 420, the pull rods 420 are connected with the upper clip 400 and the lower clip 410 by bolts 421, an elastic member 422 is disposed between the upper clip 400 and the bolts 421 so as to adjust the pressure between the upper clip 400 and the lower clip 410, and the elastic member 422 is a belleville spring.
Referring to fig. 3, a thyristor string module according to an embodiment of the present invention may be assembled by crimping in the following manner:
1) fixing a first insulating baffle 300, a second insulating baffle 310 and a lower clamp 410 on the jig;
2) placing the heat sink 100 so that the edge of the heat sink 100 is closely attached to the first insulating barrier 300 and the second insulating barrier 310;
3) inserting positioning pins into a group of positioning holes on the crimping surface of the radiator 100, which needs to be tightly attached to the thyristor 200;
4) pushing the thyristor 200 into the radiator 100 from one side until the edge of the thyristor 200 is tightly attached to the positioning pin;
5) repeating the steps 2) to 4) until all the thyristors (200) are tightly attached to the positioning pins on the corresponding heat radiators (100) and the edges of all the heat radiators (100) are tightly attached to the first insulating baffle (300) and the second insulating baffle (310);
6) the upper clamping piece 400 is placed, the upper clamping piece 400 is connected with the lower clamping piece 410 through a connecting piece, and the connecting piece is adjusted to enable the pressure between the upper clamping piece 400 and the lower clamping piece 410 to reach the required value of the module.
In this embodiment, since the selected heat sink 100 is rectangular, the first insulating baffle 300 and the second insulating baffle 310 are perpendicular to each other, when the heat sink 100 is assembled, the current-carrying lead-out row of the heat sink 100 is pushed into the space between the two baffles in a direction away from the two baffles, so that two adjacent right-angle sides of the heat sink 100 are attached to the first insulating baffle 300 and the second insulating baffle 310, that is, the rotation angles of the heat sink 100 can be consistent, thereby avoiding the generation of mechanical stress, affecting the service life of the module, and simultaneously ensuring that the current-carrying lead-out row is consistent with the contact surface of the external row, thereby preventing heat from being generated easily, and avoiding the air leakage of the air duct baffles and affecting the heat dissipation performance.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the scope of protection thereof, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: after reading this disclosure, those skilled in the art will be able to make various changes, modifications and equivalents to the embodiments of the invention, which fall within the scope of the appended claims.
Claims (11)
1. The heat radiator is characterized in that at least one group of positioning holes are formed in a compression joint surface of the heat radiator, which is in contact with a thyristor (200), each group of positioning holes at least comprises two positioning holes, the positioning holes are used for inserting positioning pins, when the thyristor (200) is arranged in the center of the compression joint surface, the edges of the positioning holes in the same group are tangent to the edges of the thyristor (200), and the distance between the positioning holes in the same group is smaller than the diameter of the thyristor (200).
2. The heat sink according to claim 1, wherein two sets of positioning holes are provided on the crimping surface, and when the first end surface of the thyristor (200) is arranged at the center of the crimping surface, the edge of the first set of positioning holes (110) is tangential to the edge of the thyristor (200); when the second end surface of the thyristor (200) is arranged at the center of the crimping surface, the edge of the second group of positioning holes (120) is tangent to the edge of the thyristor (200); wherein the area of the first end surface is larger than the area of the second end surface.
3. A heat sink according to claim 1, wherein the positioning holes are arranged on a side facing away from the current-carrying outlet of the heat sink (100).
4. The heat sink of claim 1, wherein the crimping surface and the heat sink are both rectangular in cross-section and the cross-section is perpendicular to the crimping surface.
5. A thyristor string module comprising an upper clip (400), a lower clip (410), a connector connecting the upper clip (400) and the lower clip (410), and a thyristor (200) disposed between the upper clip (400) and the lower clip (410) and the heat sink (100) according to any one of claims 1 to 4.
6. The thyristor string module according to claim 5, further comprising a first insulating barrier (300) and a second insulating barrier (310) for adjusting the heat sink (100), wherein the second insulating barrier (310) is disposed on the first insulating barrier (300), two adjacent sides of the heat sink (100) are respectively closely attached to the first insulating barrier (100) and the second insulating barrier (320), the first insulating barrier (300) is provided with a vent hole, and the thyristor (200) is in a shape of a circular cake.
7. The thyristor string module according to claim 5, wherein the connection member is a tie bar (420), and the tie bar (420) is connected to the upper clip member (400) and the lower clip member (410) by a bolt (421).
8. Thyristor string module according to claim 7, characterized in that the upper clamp (400) and the lower clamp (410) are connected by four mutually parallel tie rods (420).
9. The thyristor string module according to claim 7, wherein an elastic member (422) is disposed between the bolt (421) and the upper clip member (400).
10. The thyristor string module according to claim 9, wherein the resilient member (422) is a belleville spring.
11. A crimping method of a thyristor string module is characterized by comprising the following steps:
1) fixing a first insulating baffle (300), a second insulating baffle (310) and a lower clamping piece (410) on the jig;
2) placing the radiator (100) to enable the edge of the radiator (100) to be tightly attached to the first insulating baffle (300) and the second insulating baffle (310);
3) inserting positioning pins into a group of positioning holes on a crimping surface of the radiator (100) which needs to be tightly attached to the thyristor (200);
4) pushing the thyristor (200) into the radiator (100) from one side until the edge of the thyristor (200) is tightly attached to the positioning pin;
5) repeating the steps 2) to 4) until all the thyristors (200) are tightly attached to the positioning pins on the corresponding heat radiators (100) and the edges of all the heat radiators (100) are tightly attached to the first insulating baffle (300) and the second insulating baffle (310);
6) and placing the upper clamping piece (400), connecting the upper clamping piece (400) with the lower clamping piece (410) through a connecting piece, and adjusting the connecting piece to enable the pressure between the upper clamping piece (400) and the lower clamping piece (410) to reach the required value of the module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110928669.7A CN113809025B (en) | 2021-08-13 | 2021-08-13 | Radiator, thyristor string module and crimping method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110928669.7A CN113809025B (en) | 2021-08-13 | 2021-08-13 | Radiator, thyristor string module and crimping method thereof |
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| CN113809025A true CN113809025A (en) | 2021-12-17 |
| CN113809025B CN113809025B (en) | 2024-05-24 |
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