Silicone grease coating device and system

Abstract

The utility model provides a silicone grease coating device and system, and relates to the technical field of semiconductor coating. The silicone grease coating device is used for coating silicone grease on different types of IGBT modules, and a plurality of first fixing holes are formed in the edge of each IGBT module. The silicone grease coating device comprises a base, a support structure, a steel mesh and a plurality of supporting columns. The base is provided with a plurality of positioning structures, and each positioning structure comprises a plurality of second fixing holes. Wherein the plurality of second fixing holes in one group of positioning structures and the plurality of first fixing holes in one type of IGBT module are arranged in a one-to-one correspondence manner. The bottoms of the plurality of supporting columns are detachably connected with the plurality of second fixing holes in one group of positioning structures in a one-to-one manner, and the tops of the plurality of supporting columns are detachably connected with the plurality of first fixing holes in the IGBT modules of the corresponding types in a one-to-one manner. The support structure is vertically arranged on the base. The steel mesh is connected with the support structure in a sliding mode, and the steel mesh directly faces the silicone grease coating face of the IGBT module.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of semiconductor coating, in particular to a silicone grease coating device and system. BACKGROUND

[0002] An IGBT module is a commonly used power semiconductor device in power electronic equipment, and is widely used in the fields of frequency converters, inverters, electric locomotive traction systems and the like. The IGBT module generates a large amount of heat in the working process, and a common heat dissipation means is to install the IGBT module on a heat sink after applying heat-conducting silicone grease to the base of the IGBT module to conduct heat away.

[0003] Different types of IGBT modules have different sizes, and common types of IGBT modules include ED3, 62mm, easy3b, 34mm, pim, Flow 2 and the like. The current coating device can only coat silicone grease on one type of IGBT module, and if other types of IGBT modules need to be coated, the entire device needs to be replaced. That is, the existing coating device does not have universality, has low use frequency, and is prone to resource waste.

[0004] Therefore, how to improve the universality of the silicone grease coating device and reduce resource waste is a technical problem to be solved by the person skilled in the art. CONTENT OF THE INVENTION

[0005] The application aims to provide a silicone grease coating device and system to improve the universality of the silicone grease coating device and reduce resource waste.

[0006] In order to achieve the above-mentioned purpose, the technical scheme adopted by the application is as follows:

[0007] On the one hand, the application provides a silicone grease coating device for coating silicone grease on different types of IGBT modules, the edge of the IGBT module is provided with a plurality of first fixing holes, and the silicone grease coating device comprises:

[0008] a base, the base is provided with a plurality of groups of positioning structures, each group of positioning structures comprises a plurality of second fixing holes; wherein the plurality of second fixing holes in one group of positioning structures are arranged one by one corresponding to the plurality of first fixing holes in one type of IGBT module;

[0009] a plurality of supporting columns, the bottom of each of the plurality of supporting columns is detachably connected with the plurality of second fixing holes in one group of positioning structures, and the top of each of the plurality of supporting columns is detachably connected with the plurality of first fixing holes in the corresponding type of IGBT module;

[0010] a support structure, the support structure is vertically arranged on the base;

[0011] A steel net is slidably connected with the support structure and faces the silicon grease coating surface of the IGBT module.

[0012] Further, the support structure comprises a plurality of guide shafts, each of which is vertically arranged at the edge of the base, and the two sides of the steel net are slidably sleeved on the guide shafts.

[0013] Further, the silicon grease coating device further comprises a plurality of linear bearings, the edge of the steel net is provided with a plurality of through holes corresponding to the guide shafts, the steel net is connected with the linear bearings by interference, and the linear bearings are slidably sleeved on the guide shafts.

[0014] Further, the steel net comprises a frame part and a coating part, the edge of the coating part is connected with the frame part, the frame part is slidably connected with the support structure, and the middle part of the coating part is provided with a plurality of coating holes.

[0015] Further, the frame part comprises an upper frame body and a lower frame body, the upper frame body and the lower frame body are fixed by a plurality of connecting pieces, and the edge of the coating part is clamped between the upper frame body and the lower frame body.

[0016] Further, the coating part is not provided with the coating hole at the position corresponding to the first fixing hole.

[0017] Further, the top of the support column is a positioning nail, and the positioning nail passes through the first fixing hole.

[0018] Further, the silicon grease coating device further comprises a plurality of fasteners, the bottom of the support column passes through the second fixing hole and is fixed on the base by the fasteners.

[0019] Further, the silicon grease coating device further comprises a plurality of pads, and the opposite two sides of the base are provided with the pads with the same height.

[0020] On the other hand, the application also provides a silicon grease coating system, which comprises the silicon grease coating device according to any one of the preceding embodiments.

[0021] Compared with the prior art, the application has the following beneficial effects:

[0022] The application provides a silicone coating device and system. The application makes holes on the base according to the number and position of the first fixing holes of different types of IGBT modules, so that the base has second fixing holes corresponding to the first fixing holes in different types of IGBT modules. The support column is set to be detachable, when different types of IGBT modules need to be coated, the IGBT module can be fixed by inserting the bottom of the plurality of support columns into the second fixing holes in the corresponding positioning structure, then the steel mesh matched with the support structure is set on the support structure, the steel mesh is slid downward, and the silicone coating operation can be performed by pressing the steel mesh on the silicone coating surface of the IGBT module. Compared with the prior art, the silicone coating device provided by the application can coat various types of IGBT modules, greatly improves the compatibility and universality of the silicone coating device, and reduces the production cost and resource waste. BRIEF DESCRIPTION OF DRAWINGS

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the application clearer, the technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some of the embodiments of the application, rather than all the embodiments. The components of the embodiments of the application described and shown in the drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the application.

[0024] Figure 1 Structure schematic view of a silicone coating device provided by the application;

[0025] Figure 2 Structure schematic view of a silicone coating device provided by the application;

[0026] Figure 3 Top view of a steel mesh provided by the application;

[0027] Figure 4 Front view of a silicone coating device provided by the application.

[0028] Reference signs: 10-silicone coating device; 100-base; 110-second fixing hole; 200-support column; 210-positioning nail; 300-bracket structure; 310-guide shaft; 400-steel mesh; 410-frame part; 420-coating part; 430-coating hole; 500-linear bearing; 600-fastener; 700-pad; 20-IGBT module; 21-first fixing hole. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0030] In the description of the present application, it should be noted that the relational terms such as first and second and the like are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. The term "connection" should be interpreted broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be directly connected, or indirectly connected through an intermediate medium.

[0031] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0032] At present, a coating device can only coat silicone grease on one type of IGBT module, and if other types of IGBT modules need to be coated, the whole device needs to be replaced. That is, the existing coating device cannot meet the compatibility of multiple types of IGBT modules, has no universality, has low use frequency, and is easy to cause resource waste.

[0033] Therefore, how to improve the universality of the silicone grease coating device and reduce resource waste is a technical problem to be solved by those skilled in the art.

[0034] In order to solve the above technical problems, with reference to Figure 1 and Figure 2 The present application provides a silicone grease coating device 10 for coating silicone grease on different types of IGBT modules 20. Each type of IGBT module 20 has a plurality of first fixing holes 21 opened at the edge. The silicone grease coating device 10 comprises:

[0035] The base 100 is provided with a plurality of positioning structures, and each positioning structure comprises a plurality of second fixing holes 110. The plurality of second fixing holes 110 in one positioning structure are arranged one by one corresponding to the plurality of first fixing holes 21 in one type of IGBT module 20.

[0036] Exemplarily, it is assumed that there are six types of IGBT modules 20, and each type of IGBT module 20 is provided with four first fixing holes 21 on the edge. Correspondingly, the base 100 is provided with six positioning structures, and each positioning structure comprises four second fixing holes 110. The positions of the four second fixing holes 110 in one positioning structure correspond one by one to the positions of the four first fixing holes 21 in the corresponding type of IGBT module 20.

[0037] A plurality of support columns 200, the bottom of the plurality of support columns 200 is respectively detachably connected with the plurality of second fixing holes 110 in one positioning structure, and the top of the plurality of support columns 200 is respectively detachably connected with the plurality of first fixing holes 21 in the corresponding type of IGBT module 20.

[0038] A support structure 300 is vertically arranged on the base 100.

[0039] A steel mesh 400 is in sliding connection with the support structure 300, and the steel mesh 400 is opposite to the silicone coating surface of the IGBT module 20.

[0040] Based on the above design, the first fixing holes 21 of different types of IGBT modules 20 are drilled on the base 100, so that the base 100 has second fixing holes 110 corresponding to the first fixing holes 21 in different types of IGBT modules 20. The support column 200 is arranged in a detachable mode. When different types of IGBT modules 20 need to be coated, the bottom of the plurality of support columns 200 is inserted into the second fixing hole 110 in the corresponding positioning structure to fix the IGBT module 20, and then the steel mesh 400 matched with the support structure is sleeved on the support structure, and the steel mesh 400 is slid downward to press on the silicone coating surface of the IGBT module 20 to perform the silicone coating operation.

[0041] Compared with the prior art in which one silicone coating device can only coat one type of IGBT module, the silicone coating device provided by the embodiment of the present application can coat a plurality of types of IGBT modules, greatly improving the compatibility and universality of the silicone coating device, and reducing the production cost and resource waste.

[0042] In addition, the prior art uses a clamping method to clamp the steel mesh 400, and then adjusts the steel mesh 400 to the appropriate position by using the adjusting nut, which consumes a lot of time for each installation. During the adjustment process, the positioning points in the horizontal and vertical directions need to be found respectively on the coating plane, and the locking is adjusted by the adjusting nut, which makes the clamping process of the steel mesh 400 complicated. Moreover, the positioning accuracy between the steel mesh 400 and the IGBT module 20 relies on the visual inspection of the operator, and there is a problem of poor positioning accuracy. When external force is encountered, the steel mesh 400 is prone to shift, and after the shift, the positioning needs to be found again.

[0043] To solve the above problems, please refer to Figure 2 The support structure 300 includes a plurality of guide shafts 310. Among them, the plurality of guide shafts 310 are vertically arranged at the edges of the base 100, and the two sides of the steel mesh 400 are slidingly sleeved on the plurality of guide shafts 310. Optionally, the guide shaft 310 is tightly connected with the base 100 through threads.

[0044] In a feasible implementation, the fat coating device further includes a plurality of linear bearings 500, and the edges of the steel mesh 400 are provided with a plurality of through holes corresponding to the guide shafts 310. The steel mesh 400 is connected with the linear bearings 500 in interference fit, and the linear bearings 500 are slidingly sleeved on the guide shafts 310.

[0045] To improve the stability, in the embodiments of the present application, through holes are arranged at the four corners of the steel mesh 400, and correspondingly, the silicon fat coating device 10 includes four linear bearings 500 and four guide shafts 310. The through holes at the four corners of the steel mesh 400 are interference-fitted with the four linear bearings 500 to form an assembly, and the linear bearings 500 are sleeved on the guide shafts 310, so that the steel mesh 400 can only move in the up-down direction, and the left-right and front-back directions are limited by the guide shafts 310. This greatly reduces the error caused by the left-right and front-back shaking of the device, thereby realizing high-precision positioning and rapid coating.

[0046] In addition, the position of the IGBT module 20 is fixed by the support column 200, so that the horizontal direction between the steel mesh 400 and the IGBT module 20 is relatively fixed. Even if affected by external force, relative displacement can be avoided, and the position does not need to be aligned again, which can greatly save the adjustment time, and the silicon fat coating position is more accurate.

[0047] As an optional implementation, please refer to Figure 2 and Figure 3 The steel mesh 400 includes a frame part 410 and a coating part 420. Among them, the edge part of the coating part 420 is connected with the frame part 410, and the frame part 410 is slidingly connected with the support structure 300. A plurality of coating holes 430 are arranged in the middle part of the coating part 420, and the plurality of coating holes 430 are opposite to the silicon fat coating surface of the IGBT module 20.

[0048] Further, the frame part 410 includes an upper frame and a lower frame. The upper frame and the lower frame are fixed by a plurality of connecting members (e.g., screws), and the edge part of the coating part 420 is clamped between the upper frame and the lower frame. Through this design, the coating part 420 and the edge part form a groove, so that the heat-conducting silicone grease is not easy to overflow during the IGBT silicone grease coating process.

[0049] As shown in Figure 3 , the middle part of the coating part 420 is provided with a plurality of coating holes 430, and the plurality of coating holes 430 are closely arranged to form a grid. The area of the grid is equal to the area of the IGBT module 20 that needs to be coated with silicone grease. Since the edge of the IGBT module 20 is provided with a first fixing hole 21, the part of the coating part 420 corresponding to the first fixing hole 21 is not provided with a coating hole 430, so as to avoid the heat-conducting silicone grease from falling into the first fixing hole 21. In addition, since the sizes of different types of IGBT modules 20 are different, the areas and shapes of the grids are also different, that is, different types of IGBT modules 20 correspond to different steel meshes 400.

[0050] Since the cooperation gap between the support column 200 and the first fixing hole 21 in the IGBT module 20 is small, in order to better fix the IGBT module 20, in the embodiment of the present application, please refer to Figure 4 , the top of the support column 200 is a positioning nail 210, and the positioning nail 210 with a sharp head can more easily pass through the first fixing hole 21, so as to better place the IGBT module 20 on the support column 200.

[0051] In an alternative embodiment, the silicone grease coating device 10 further comprises a plurality of fasteners 600. The bottom of the support column 200 passes through the second fixing hole 110 and is fixed to the base 100 by the fastener 600. When it is necessary to replace different types of IGBT modules 20 for silicone grease coating, the IGBT module 20 is removed from the positioning nail 210, and the fastener 600 is loosened, so that the support column 200 can be disassembled. Then, the bottom of the support column 200 is inserted into the corresponding second fixing hole 110, and the bottom of the support column 200 is fixed to the base 100 by the fastener 600, and finally the IGBT module 20 to be coated is placed on the top of the support column 200, so that the IGBT module 20 can be quickly replaced and positioned.

[0052] Further, in the embodiment of the present application, the silicone grease coating device 10 further comprises a pad 700, and the opposite sides of the base 100 are provided with pads 700 of the same height. The base 100 is raised by the pad 700, so that the middle part of the base 100 is suspended, thereby facilitating the loosening and tightening of the fastener 600, and ensuring that the support column 200 can be quickly disassembled and fixed to the base 100.

[0053] Based on the above design, the overall working principle of the silicone grease coating device 10 is as follows:

[0054] According to the type of the IGBT module 20 to be coated (i.e., the number and position of the first fixed holes 21 in the IGBT module 20), the bottom of the plurality of support columns 200 is inserted into the second fixed holes 110 in the corresponding positioning structure, and the bottom of the support column 200 is fixed with the base 100 through the fastener 600. Then the IGBT module 20 is placed on the top of the support column 200 through the positioning peg 210 and the first fixed hole 21. The steel mesh 400 and the linear bearing 500 form an assembly which is sleeved on the guide shaft 310. When coating silicone grease, only the steel mesh 400 needs to be slid downward, and the silicone grease coating operation can be performed by pressing the steel mesh 400 on the silicone grease coating surface of the IGBT module 20.

[0055] When it is necessary to replace the same type of IGBT module 20 for silicone grease coating, first, the steel mesh 400 is slid upward, then the previous IGBT module 20 is removed from the support column 200, and the same type of IGBT module 20 which needs to be coated with silicone grease is placed on the top of the support column 200 through the first fixed hole 21 and the positioning peg 210 to achieve positioning. Then, the steel mesh 400 is slid downward, and the silicone grease coating operation can be performed by pressing the steel mesh 400 on the silicone grease coating surface of the IGBT module 20.

[0056] When it is necessary to replace the same type of IGBT module 20 for silicone grease coating, first, the steel mesh 400 is slid upward, then the previous IGBT module 20 is removed from the support column 200, and the same type of IGBT module 20 which needs to be coated with silicone grease is placed on the top of the support column 200 through the first fixed hole 21 and the positioning peg 210 to achieve positioning. Then, the steel mesh 400 is slid downward, and the silicone grease coating operation can be performed by pressing the steel mesh 400 on the silicone grease coating surface of the IGBT module 20.

[0057] Optionally, the embodiment of the present application also provides a silicone grease coating system, which comprises the silicone grease coating device 10 according to any one of the preceding embodiments.

[0058] In summary, the embodiment of the present application provides a silicone coating device and system. According to the first fixed hole of different types of IGBT modules, the base is opened, so that the base has the second fixed hole corresponding to the first fixed hole in different types of IGBT modules. The support column is set to be detachable mode, when the different types of IGBT modules need to be coated, only the bottom of the plurality of support columns is inserted into the second fixed hole in the corresponding positioning structure, the IGBT module can be fixed, then the steel mesh matched with it is set on the support structure, the steel mesh is slid downward, the silicone coating operation can be carried out by pressing the steel mesh on the silicone coating surface of the IGBT module.

[0059] Compared with the prior art, one silicone coating device can only coat one type of IGBT module, the silicone coating device provided by the embodiment of the present application can coat multiple types of IGBT modules, greatly improving the compatibility and universality of the silicone coating device, and reducing the production cost and resource waste.

[0060] In addition, by forming an assembly of the steel mesh and the linear bearing in interference fit on the guide shaft, the steel mesh can only move in the up-down direction, and the left-right and front-back directions are limited by the guide shaft, greatly reducing the error caused by the left-right and front-back shaking of the device, so as to realize high-precision positioning and rapid coating, and save the installation and adjustment time.

[0061] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0062] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims.

Claims

1. A silicon grease coating device for coating different types of IGBT modules with silicon grease, the edges of the IGBT modules being provided with a plurality of first fixing holes, characterized in that, The silicon grease coating device comprises: a base provided with a plurality of sets of positioning structures, each set of positioning structures comprising a plurality of second fixing holes; wherein the plurality of second fixing holes in one set of positioning structures are arranged one-to-one corresponding to the plurality of first fixing holes in an IGBT module of one type; a plurality of support columns, the bottoms of the plurality of support columns are respectively detachably connected with the plurality of second fixing holes in one set of positioning structures, and the tops of the plurality of support columns are respectively detachably connected with the plurality of first fixing holes in the corresponding type of IGBT module; a bracket structure vertically arranged on the base; a steel mesh in sliding connection with the bracket structure and facing the silicon grease coating surface of the IGBT module.

2. The silicone coating device of claim 1, wherein, The bracket structure comprises a plurality of guide shafts, each of which is vertically arranged at the edge of the base, and the two sides of the steel mesh are slidingly sleeved on the plurality of guide shafts.

3. The silicone coating device of claim 2, wherein, The silicon grease coating device further comprises a plurality of linear bearings, the edges of the steel mesh are provided with a plurality of through holes corresponding to the guide shafts, the steel mesh is in interference connection with the linear bearings through the through holes, and the linear bearings are slidingly sleeved on the guide shafts.

4. The silicone coating apparatus of claim 1, wherein, The steel mesh comprises a frame part and a coating part, the edge part of the coating part is connected with the frame part, and the frame part is in sliding connection with the bracket structure; the middle part of the coating part is provided with a plurality of coating holes, and the plurality of coating holes face the silicon grease coating surface of the IGBT module.

5. The silicone coating device of claim 4, wherein, The frame part comprises an upper frame body and a lower frame body, the upper frame body and the lower frame body are fixed by a plurality of connecting pieces, and the edge part of the coating part is clamped between the upper frame body and the lower frame body.

6. The silicone coating apparatus of claim 4, wherein, The part of the coating part corresponding to the first fixing hole is not provided with the coating hole.

7. The silicone coating apparatus of claim 1, wherein, The top of the support column is a positioning nail, and the positioning nail penetrates through the first fixing hole.

8. The silicone coating apparatus of claim 1, wherein, The silicon grease coating device further comprises a plurality of fasteners, the bottom of the support column penetrates through the second fixing hole and is fixed on the base by the fastener.

9. The silicone coating apparatus of claim 1, wherein, The silicon grease coating device further comprises a pad, and the opposite two sides of the base are provided with the pads of the same height at the bottom.

10. A silicone coating system characterized by, The silicon grease coating system comprises the silicon grease coating device according to any one of claims 1-9.

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