CN115775772B - IGBT packaging shell - Google Patents
IGBT packaging shell Download PDFInfo
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- CN115775772B CN115775772B CN202211583593.XA CN202211583593A CN115775772B CN 115775772 B CN115775772 B CN 115775772B CN 202211583593 A CN202211583593 A CN 202211583593A CN 115775772 B CN115775772 B CN 115775772B
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- 238000004806 packaging method and process Methods 0.000 title claims abstract description 13
- 239000000758 substrate Substances 0.000 claims abstract description 80
- 238000001125 extrusion Methods 0.000 claims abstract description 78
- 238000000034 method Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 abstract description 6
- 238000002347 injection Methods 0.000 abstract description 6
- 239000007924 injection Substances 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 description 10
- 230000005489 elastic deformation Effects 0.000 description 7
- 239000012634 fragment Substances 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
The invention relates to the field of electronics, in particular to an IGBT packaging shell, which comprises an IGBT packaging module, wherein the IGBT packaging module comprises a substrate and a shell; spring plates are symmetrically and fixedly connected to two sides of the substrate, the extrusion part is U-shaped, the upper end of the extrusion part is fixedly connected with a pressing part tilting upwards, and the corner position of the extrusion part is extruded on the shell; the end part of the shell is provided with an arc-shaped groove, and the corner position of the extrusion part is extruded in the groove; spring plates are arranged on two sides of the substrate, and the shell is extruded on the substrate by the spring plates; the pressing parts are firstly swung towards the two sides of the substrate, the pressing parts are tilted at the moment, the shell is covered on the substrate, the glue injection position and other modules on the substrate are sealed and covered, the pressing parts are pressed down, the corner positions of the pressing parts are pressed in the grooves, and the shell can be stabilized on the substrate at the moment; the design of the elastic sheet structure enables the disassembly and assembly between the shell and the base plate to be convenient, and can be suitable for frequent disassembly and assembly operations.
Description
Technical Field
The invention relates to the field of electronics, in particular to an IGBT packaging shell.
Background
The IGBT module, namely the insulated gate bipolar transistor, has the advantages of small driving power and reduced saturation voltage, and is widely applied to the fields of alternating current motors, frequency converters, inverters, switching power supplies, lighting circuits, traction transmission and the like; the IGBT module generally comprises a substrate, a plurality of chips are welded on the substrate, a protective shell is covered on the substrate through bolts to protect the chips, meanwhile, the chips are wrapped and sealed by silica gel, the injected silica gel covers the chips, the functions of preventing moisture, dust, corrosion, vibration, isolation and the like are achieved, the pressure-resistant grade of the module is improved, and all parts in the module are sealed to protect the chips.
Some IGBT modules are in order to be capable of stably matching with other modules, the IGBT modules and the other modules are arranged on the same substrate in parallel at the beginning of design, but the later-period glue injection protection is not performed on the other modules, so that the other modules can be used for providing expansion for users, the design is an open-type design, the convenient operation of later-period users is required to be considered, the existing open-type modules are the same as the IGBT module package, a protection shell is generally fastened on the substrate through a plurality of screws, the IGBT modules are matched with the other modules to be mounted on the substrate, the volumes of the substrate and the protection shell are increased, the number of bolts which are naturally fixed is increased, and the fixing mode of the bolts is complicated when the other modules are expanded or tested.
Therefore, an IGBT package is proposed for the above-described problems.
Disclosure of Invention
In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved.
The technical scheme adopted for solving the technical problems is as follows: according to the first embodiment of the invention:
an IGBT packaging shell comprises an IGBT packaging module, wherein the IGBT packaging module comprises a substrate and a shell; elastic pieces are symmetrically and fixedly connected to two sides of the substrate, and each elastic piece comprises an extrusion part and a pressing part; the extrusion part is U-shaped, the upper end of the extrusion part is fixedly connected with a pressing part which is tilted upwards, and the corner position of the extrusion part is extruded on the shell; the end part of the shell is provided with an arc-shaped groove, the shape of the groove is the same as that of the corner of the extrusion part, and the corner of the extrusion part is extruded in the groove; the shell is extruded on the substrate by the elastic pieces arranged on two sides of the substrate; the pressing parts are firstly swung towards the two sides of the substrate, the pressing parts are tilted at the moment, the shell is covered on the substrate, the glue injection position and other modules on the substrate are sealed and covered, the pressing parts are pressed down, the corner positions of the pressing parts are pressed in the grooves, and the shell can be stabilized on the substrate at the moment; in order to ensure stability and tightness between the shell and the substrate, a sealing groove can be formed in the edge positions of the outer ring of the upper surface of the substrate and the port of the shell, and then the sealing groove is matched with a sealing ring made of rubber material for sealing protection, so that the possibility that external moisture and pollution permeate into the shell is reduced, and the protection of the IGBT module is improved.
Preferably, the lower end of the extrusion part is fixedly connected with a cuttage board, and the cuttage board comprises an L-shaped part and a horizontal part; one end of the L-shaped part is fixedly connected with the lower part of the extrusion part, the other end of the L-shaped part is fixedly connected with the horizontal part, a gap is reserved between the other end of the L-shaped part and the horizontal part, and the other end of the L-shaped part and the horizontal part are embedded into fixing grooves formed in two sides of the substrate; the base plate is provided with other modules, the IGBT module is stably connected with the other modules, the other modules are protected, but the other modules are implanted to provide more expansion space for use, the shell is frequently taken down and installed, after the elastic sheet is stressed for many times, the inherent elastic deformation of the elastic sheet is gradually reduced, the extrusion stabilizing effect of the shell is gradually deteriorated, and therefore the elastic sheet is arranged to be replaceable; the L-shaped part and the horizontal part are embedded in the fixed groove together, and meanwhile, the corner position of the extrusion part is sunk in the groove, so that the elastic sheet can be stabilized on the substrate, the shell is extruded on the substrate, after the inherent elastic deformation of the elastic sheet is reduced, the elastic sheet is directly taken down, the new elastic sheet, the L-shaped part and the horizontal part are replaced, and the shell is ensured to be stabilized on the substrate.
Preferably, the inner top surface of the fixing groove is provided with a limiting pin; the surface of the other end of the L-shaped part is provided with a fixing hole, the other end of the L-shaped part is embedded in the fixing groove, and the end part of the limiting pin is embedded in the fixing hole; l shape portion and level embedding are in the fixed slot, and the corner position of extrusion portion is sunken in the recess simultaneously, and L shape portion and horizontal part this moment have one kind and want to break away from the trend of fixed slot, and when IGBT module received external striking, L line portion and horizontal part this moment break away from the fixed slot easily, set up the cooperation of spacer pin and fixed orifices for this reason, insert the fixed slot with the horizontal part at L shape portion in the back, the spacer pin slides to the fixed orifices along L shape portion surface, and L shape portion and horizontal part are restrained in the fixed slot this moment to stabilize the shell fragment, guarantee that extrusion portion stablizes and detains in the recess.
Preferably, limit grooves are symmetrically formed in the upper surface of the horizontal part; the lower surface of the other end of the L-shaped part is also provided with a limiting groove, and two opposite limiting grooves are internally provided with pressure springs; through setting up the pressure spring, guarantee elastic support between L shape portion and the horizontal part for L shape portion and horizontal part are after inserting in the fixed slot, and the horizontal part can stabilize the extrusion and be in the fixed slot bottom surface, and L shape portion can stabilize the extrusion and be in the fixed slot interior top surface, thereby further stabilize the shell fragment, guarantee that the extrusion is stablized and is detained in the recess.
Preferably, the upper surfaces of the two sides of the substrate are provided with wire grooves, the wire grooves are provided with rectangular clamping grooves, rectangular inserting plates are inserted into the clamping grooves, one ends of the inserting plates are provided with arc-removing openings, and the other ends of the inserting plates are fixedly connected to the lower surfaces of the two sides of the shell; install other modules on the base plate, such as some wireless transmission module, temperature monitoring module etc. and these other modules need pass through electric wire and external power or control panel electric connection, on the wire connection base plate, afterwards outwards extend the wire along the wire groove, then cover the extrusion through the casing and live in the wire inslot, fix the wire, guarantee wire and other module electric connection stability, the picture peg of setting on the casing simultaneously, the wire is pushed down to the arc mouth on the picture peg for the wire receives the shearing force of picture peg, further stabilizes the wire.
Preferably, the fixing groove is communicated with the clamping groove; the other end of the L-shaped part is symmetrically provided with a notch, the other end of the L-shaped part is inserted into the fixed groove, and two sides of one end of the plugboard are embedded into the notch; the shell is covered on the base plate, then the horizontal part and the L-shaped part are inserted into the fixing groove, the L-shaped part is extruded by using the pressure, two sides of one end of the plugboard are embedded into the notch, the L-shaped part and the horizontal part are locked in the fixing groove, then the pressing part is swung, the extruding part is sunk into the groove, at the moment, the L-shaped elastic sheet, the plugboard and the L-shaped part form closed-loop self-locking, the stability is promoted between the shell and the base plate, between the plugboard and the L-shaped part and between the elastic sheet and the shell.
Preferably, the inner surface of the groove is uniformly provided with a plurality of pits; the corner surface of the extrusion part is provided with a plurality of protruding points, the corner of the extrusion part is extruded in the groove, and the protruding points are embedded in the recessed points; in the process that the extrusion part is sunk in the groove, the convex point on the extrusion part invades in the concave point, so that the relative movement between the extrusion part and the groove is restrained, the relative movement between the extrusion part and the groove is difficult to occur, and the extrusion stability between the shell and the elastic sheet is further improved.
Preferably, the two sides of the shell are fixedly connected with strip-shaped plates, the strip-shaped plates are provided with sliding grooves, sliding blocks connected with tension springs are arranged in the sliding grooves, pull ropes are fixedly connected to the end parts of the sliding blocks, cross bars are fixedly connected to the end parts of the pull ropes, and the cross bars are embedded in the inner corner positions of the extrusion parts; the horizontal pole that sets up invades in the interior corner position of extrusion to pull through stay cord and extension spring's pulling force under, make the swing of shell fragment restrained, make the shell fragment can stabilize in the recess, guarantee that the casing can stably attach on the base plate.
Preferably, the end part of the pull rope extends obliquely upwards and is fixedly connected with the end part of the cross rod; the arrangement of the inclined direction of the end part of the pull rope enables the vertical downward component force of the pull rope to act on the lower cross rod, and meanwhile, the cross rod presses the compression part downwards again, so that the stability of the elastic sheet in the groove is improved again, and the stable connection between the substrate and the shell is improved.
Preferably, the end part of the substrate is provided with a strip-shaped groove, the strip-shaped groove is arranged along the width of the shell, and the roll body is rotationally connected in the strip-shaped groove; after the shell body is covered on the base plate, the elastic sheet is fixed in the fixing groove through the horizontal part and the L-shaped part, and the corner position of the extrusion part is rubbed on the roller body, so that the roller body rotates, and the extrusion part can smoothly slide into the groove.
The invention has the advantages that:
1. according to the invention, the shell is extruded on the substrate by arranging the elastic sheets on two sides of the substrate; the pressing parts are firstly swung towards the two sides of the substrate, the pressing parts are tilted at the moment, the shell is covered on the substrate, the glue injection position and other modules on the substrate are sealed and covered, the pressing parts are pressed down, the corner positions of the pressing parts are pressed in the grooves, and the shell can be stabilized on the substrate at the moment; the design of the elastic sheet structure enables the disassembly and assembly between the shell and the base plate to be convenient, and can be suitable for frequent disassembly and assembly operations.
2. According to the invention, through the design of the L-shaped part and the horizontal part, the L-shaped part and the horizontal part are embedded in the fixed groove together, and meanwhile, the corner position of the extrusion part is sunk in the groove, so that the elastic sheet can be stabilized on the substrate, the shell is extruded on the substrate, after the inherent elastic deformation of the elastic sheet is reduced, the elastic sheet is directly taken down, and a new elastic sheet, the L-shaped part and the horizontal part are replaced, so that the shell can be stabilized on the substrate.
Drawings
Fig. 1 is a perspective view of an IGBT package module according to a first embodiment;
FIG. 2 is a perspective view of a substrate according to a first embodiment;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a perspective view of a first view of a housing according to the first embodiment;
FIG. 5 is a second perspective view of the housing according to the first embodiment;
FIG. 6 is a perspective view of a spring plate according to the first embodiment;
FIG. 7 is a perspective view showing the cooperation of the L-shaped portion and the horizontal portion in the first embodiment;
FIG. 8 is a cross-sectional view showing the fit of the fixing hole and the stopper pin in the first embodiment;
fig. 9 is a perspective view showing the mating of the board and the wires in the first embodiment;
FIG. 10 is a diagram showing a structure of the cooperation between the spring and the cross bar in the first embodiment;
fig. 11 is a perspective view showing the cooperation between the roller body and the housing in the first embodiment.
In the figure: base plate 1, casing 2, shell fragment 3, extrusion part 4, press part 5, recess 6, L shape portion 8, horizontal portion 9, fixed slot 10, spacer 11, fixed orifices 12, spacing groove 13, pressure spring 14, wire groove 15, draw-in groove 16, picture peg 17, arc mouth 18, breach 19, pit 20, bump 21, strip 22, slider 23, stay 24, horizontal pole 25, roll body 26.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
Embodiment one:
referring to fig. 1, 6 and 8, an IGBT package includes an IGBT package module including a substrate 1 and a case 2; spring plates 3 are symmetrically and fixedly connected to two sides of the substrate 1, and each spring plate 3 comprises an extrusion part 4 and a pressing part 5; the extrusion part 4 is U-shaped, the upper end of the extrusion part 4 is fixedly connected with a pressing part 5 which is tilted upwards, and the corner position of the extrusion part 4 is extruded on the shell 2; the end part of the shell 2 is provided with an arc-shaped groove 6, the shape of the groove 6 is the same as the corner shape of the extrusion part 4, and the corner position of the extrusion part 4 is extruded in the groove 6; in the embodiment of the invention, the IGBT packaging shell convenient to detach is designed; by arranging the elastic pieces 3 on the two sides of the substrate 1, the elastic pieces 3 squeeze the shell 2 on the substrate 1; firstly, the pressing parts 5 are swung towards the two sides of the substrate 1, at the moment, the pressing parts 4 are tilted, then the shell 2 is covered on the substrate 1, the glue injection position and other modules on the substrate 1 are sealed and covered, then the pressing parts 5 are pressed down, the corner positions of the pressing parts 4 are pressed in the grooves 6, and at the moment, the shell 2 can be stabilized on the substrate 1; in order to ensure stability and tightness between the shell 2 and the substrate 1, sealing grooves can be formed in the edge positions of the outer ring of the upper surface of the substrate 1 and the port of the shell 2, and then sealing protection is carried out by matching with a sealing ring made of rubber materials, so that the possibility that external moisture and pollution permeate into the shell 2 is reduced, and the protection of the IGBT module is improved.
Referring to fig. 1, 6, 7 and 8, a fixing plate is fixedly connected to the lower end of the pressing part 4, and the fixing plate comprises an L-shaped part 8 and a horizontal part 9; one end of the L-shaped part 8 is fixedly connected with the lower part of the extrusion part 4, the other end of the L-shaped part 8 is fixedly connected with the horizontal part 9, a gap is reserved between the other end of the L-shaped part 8 and the horizontal part 9, and the other end of the L-shaped part 8 and the horizontal part 9 are embedded into fixing grooves 10 formed in two sides of the substrate 1; the base plate 1 is provided with other modules, firstly, the stable connection between the IGBT module and the other modules is ensured, and meanwhile, the other modules are protected, but the implantation of the other modules also provides more expansion space for use, the shell 2 is frequently taken down and installed, after the elastic sheet 3 is stressed for many times, the inherent elastic deformation of the elastic sheet 3 is gradually reduced, the extrusion stabilizing effect of the shell 2 is gradually deteriorated, and therefore, the elastic sheet 3 is arranged to be replaceable; the L-shaped part 8 and the horizontal part 9 are embedded in the fixed groove 10 together, and meanwhile, the corner position of the extrusion part 4 is sunk in the groove 6, so that the elastic sheet 3 can be stabilized on the substrate 1, the shell 2 is extruded on the substrate 1, after the inherent elastic deformation of the elastic sheet 3 is reduced, the elastic sheet 3 is directly taken down, and the new elastic sheet 3, the L-shaped part 8 and the horizontal part 9 are replaced, so that the shell 2 can be stabilized on the substrate 1.
Referring to fig. 6, 7 and 8, the inner top surface of the fixing groove 10 is provided with a limit pin 11; the surface of the other end of the L-shaped part 8 is provided with a fixing hole 12, the other end of the L-shaped part 8 is embedded in the fixing groove 10, and the end part of the limiting pin 11 is embedded in the fixing hole 12; the L-shaped part 8 and the horizontal part 9 are embedded in the fixing groove 10, meanwhile, the corner position of the extrusion part 4 is sunk in the groove 6, the L-shaped part 8 and the horizontal part 9 have a trend of being separated from the fixing groove 10, when the IGBT module is impacted by the outside, the L-shaped part and the horizontal part 9 are easily separated from the fixing groove 10, the limiting pin 11 is matched with the fixing hole 12, after the L-shaped part 8 and the horizontal part 9 are inserted into the fixing groove 10, the limiting pin 11 slides to the fixing hole 12 along the surface of the L-shaped part 8, and at the moment, the L-shaped part 8 and the horizontal part 9 are restrained in the fixing groove 10, so that the elastic sheet 3 is stabilized, and the extrusion part 4 is ensured to be stably buckled in the groove 6.
Referring to fig. 6 and 8, the upper surface of the horizontal portion 9 is symmetrically provided with a limit groove 13; the lower surface of the other end of the L-shaped part 8 is also provided with a limiting groove 13, and two opposite limiting grooves 13 are internally provided with a pressure spring 14; through setting up pressure spring 14, guarantee elastic support between L shape portion 8 and the horizontal part 9 for L shape portion 8 and horizontal part 9 are after inserting in fixed slot 10, and horizontal part 9 can stabilize the extrusion bottom surface in fixed slot 10, and L shape portion 8 can stabilize the extrusion top surface in fixed slot 10, thereby further stabilize shell fragment 3, guarantee that extrusion portion 4 is detained in recess 6 steadily.
Referring to fig. 2, 3 and 5, the upper surfaces of the two sides of the substrate 1 are provided with wire grooves 15, the wire grooves 15 are provided with rectangular clamping grooves 16, rectangular inserting plates 17 are inserted into the clamping grooves 16, one ends of the inserting plates 17 are provided with arc-shaped removing openings 18, and the other ends of the inserting plates 17 are fixedly connected to the lower surfaces of the two sides of the shell 2; other modules, such as a wireless transmission module, a temperature monitoring module and the like, are installed on the substrate 1, the other modules are required to be electrically connected with an external power supply or a control board through wires, the wires are connected to the substrate 1, then extend outwards along the wire grooves 15, then cover and squeeze the wires in the wire grooves 15 through the shell 2, the wires are fixed, the stability of the electrical connection of the wires and the other modules is ensured, meanwhile, the arc-shaped opening 18 on the shell 2 presses down the wires, so that the wires are subjected to shearing force of the inserting plate 17, and the wires are further stabilized.
Referring to fig. 9, the fixing slot 10 is communicated with the clamping slot 16; the other end of the L-shaped part 8 is symmetrically provided with a notch 19, the other end of the L-shaped part 8 is inserted into the fixed groove 10, and two sides of one end of the plugboard 17 are embedded into the notch 19; firstly, the shell 2 is covered on the base plate 1, then the horizontal part 9 and the L-shaped part 8 are inserted into the fixing groove 10, the L-shaped part 8 is pressed by force, two sides of one end of the inserting plate 17 are embedded into the notch 19, the L-shaped part 8 and the horizontal part 9 are locked in the fixing groove 10, then the pressing part 5 is swung, the pressing part 4 is sunk in the groove 6, at the moment, the L-shaped elastic sheet 3, the inserting plate 17 and the L-shaped part 8 form closed-loop self-locking, and the stability is positively promoted between the shell 2 and the base plate 1, between the inserting plate 17 and the L-shaped part 8 and between the elastic sheet 3 and the shell 2.
Referring to fig. 4 and 8, the inner surface of the groove 6 is uniformly provided with a plurality of pits 20; the corner surface of the extrusion part 4 is provided with a plurality of convex points 21, the corner of the extrusion part 4 is extruded in the groove 6, and the convex points 21 are embedded in the concave points 20; in the process that the extrusion part 4 is sunk in the groove 6, the convex points 21 on the extrusion part 4 invade in the concave points 20, so that the relative movement between the extrusion part 4 and the groove 6 is restrained, the relative movement between the extrusion part 4 and the groove 6 is difficult to occur, and the extrusion stability between the shell 2 and the shrapnel 3 is further improved.
Referring to fig. 1 and 10, two sides of the shell 2 are fixedly connected with a strip-shaped plate 22, a chute is formed on the strip-shaped plate 22, a sliding block 23 connected with a tension spring is arranged in the chute, a pull rope 24 is fixedly connected with the end part of the sliding block 23, a cross rod 25 is fixedly connected with the end part of the pull rope 24, and the cross rod 25 is embedded in the inner corner position of the extrusion part 4; the cross bar 25 is arranged to invade the inner corner position of the extrusion part 4, and the swing of the elastic sheet 3 is restrained under the traction of the pull rope 24 and the tension of the tension spring, so that the elastic sheet 3 can be stabilized in the groove 6, and the shell 2 can be stably attached to the substrate 1.
Referring to fig. 10, the end of the pull rope 24 extends obliquely upward and is fixedly connected with the end of the cross rod 25; the inclined direction of the end part of the pull rope 24 is set, so that the vertical downward component force of the pull rope 24 acts on the cross rod 25, and meanwhile, the cross rod 25 presses down the compression part 4 again, so that the stability of the elastic sheet 3 in the groove 6 is improved again, and the stable connection between the substrate 1 and the shell 2 is improved.
Embodiment two:
referring to fig. 11, in a first comparative example, as another embodiment of the present invention, a strip-shaped groove is formed at an end of the base plate 1, the strip-shaped groove is disposed along a width of the housing 2, and a roller 26 is rotatably connected in the strip-shaped groove; after the housing 2 is covered on the base plate 1, the elastic sheet 3 is rubbed against the roller 26 at the corner position of the pressing portion 4 and rotates the roller 26 in the process of being fixed in the fixing groove 10 by the horizontal portion 9 and the L-shaped portion 8, which enables the pressing portion 4 to smoothly slide into the groove 6.
Working principle: embodiment one:
referring to fig. 1, by providing the elastic pieces 3 on both sides of the substrate 1, the elastic pieces 3 press the housing 2 onto the substrate 1; firstly, the pressing parts 5 are swung towards the two sides of the substrate 1, at the moment, the pressing parts 4 are tilted, then the shell 2 is covered on the substrate 1, the glue injection position and other modules on the substrate 1 are sealed and covered, then the pressing parts 5 are pressed down, the corner positions of the pressing parts 4 are pressed in the grooves 6, and at the moment, the shell 2 can be stabilized on the substrate 1; the design of the spring plate 3 structure facilitates the disassembly and assembly between the shell 2 and the base plate 1, and can adapt to frequent disassembly and assembly operations; in order to ensure the stability and the tightness between the shell 2 and the substrate 1, sealing grooves can be formed in the outer ring of the upper surface of the substrate 1 and the edge of the port of the shell 2, and then sealing protection is carried out by matching with a sealing ring made of rubber materials, so that the possibility that external moisture and pollution permeate into the shell 2 is reduced, and the protection of an IGBT module is improved;
the base plate 1 is provided with other modules, firstly, the stable connection between the IGBT module and the other modules is ensured, and meanwhile, the other modules are protected, but the implantation of the other modules also provides more expansion space for use, the shell 2 is frequently taken down and installed, after the elastic sheet 3 is stressed for many times, the inherent elastic deformation of the elastic sheet 3 is gradually reduced, the extrusion stabilizing effect of the shell 2 is gradually deteriorated, and therefore, the elastic sheet 3 is arranged to be replaceable; the L-shaped part 8 and the horizontal part 9 are embedded in the fixed groove 10 together, and meanwhile, the corner position of the extrusion part 4 is sunk in the groove 6, so that the elastic sheet 3 can be stabilized on the substrate 1, the shell 2 is extruded on the substrate 1, after the inherent elastic deformation of the elastic sheet 3 is reduced, the elastic sheet 3 is directly taken down, and the new elastic sheet 3, the L-shaped part 8 and the horizontal part 9 are replaced, so that the shell 2 can be stabilized on the substrate 1;
the L-shaped part 8 and the horizontal part 9 are embedded in the fixed groove 10, meanwhile, the corner position of the extrusion part 4 is sunk in the groove 6, the L-shaped part 8 and the horizontal part 9 have a trend of being separated from the fixed groove 10, when the IGBT module is impacted by the outside, the L-shaped part and the horizontal part 9 are easily separated from the fixed groove 10, the limiting pin 11 is matched with the fixed hole 12, after the L-shaped part 8 and the horizontal part 9 are inserted into the fixed groove 10, the limiting pin 11 slides to the fixed hole 12 along the surface of the L-shaped part 8, and at the moment, the L-shaped part 8 and the horizontal part 9 are restrained in the fixed groove 10, so that the elastic sheet 3 is stabilized, and the extrusion part 4 is ensured to be stably buckled in the groove 6;
by arranging the pressure spring 14, the elastic support between the L-shaped part 8 and the horizontal part 9 is ensured, so that the L-shaped part 8 and the horizontal part 9 can be stably extruded on the inner bottom surface of the fixed groove 10 after being inserted into the fixed groove 10, the L-shaped part 8 can be stably extruded on the inner top surface of the fixed groove 10, the elastic sheet 3 is further stabilized, and the extrusion part 4 is ensured to be stably buckled in the groove 6;
other modules, such as a wireless transmission module, a temperature monitoring module and the like, are installed on the substrate 1, the other modules are required to be electrically connected with an external power supply or a control board through wires, the wires are connected to the substrate 1, then extend outwards along the wire grooves 15, then cover and squeeze the wires in the wire grooves 15 through the shell 2, the wires are fixed, the electrical connection stability of the wires and the other modules is ensured, meanwhile, the arc-shaped opening 18 on the shell 2 presses down the wires, so that the wires are subjected to shearing force of the inserting plate 17, and the wires are further stabilized;
firstly covering the shell 2 on the base plate 1, inserting the horizontal part 9 and the L-shaped part 8 into the fixing groove 10, pressing the L-shaped part 8 with force, embedding two sides of one end of the inserting plate 17 into the notch 19, locking the L-shaped part 8 and the horizontal part 9 in the fixing groove 10, and swinging the pressing part 5 to enable the pressing part 4 to sink into the groove 6, wherein the L-shaped elastic plate 3, the inserting plate 17 and the L-shaped part 8 form closed loop self-locking, and stability is positively promoted between the shell 2 and the base plate 1, between the inserting plate 17 and the L-shaped part 8 and between the elastic plate 3 and the shell 2;
in the process that the extrusion part 4 is sunk in the groove 6, the convex points 21 on the extrusion part 4 invade in the concave points 20, so that the relative movement between the extrusion part 4 and the groove 6 is restrained, the relative movement between the extrusion part 4 and the groove 6 is difficult to occur, and the extrusion stability between the shell 2 and the shrapnel 3 is further improved; the cross rod 25 is arranged to invade the inner corner position of the extrusion part 4, and the swing of the elastic sheet 3 is restrained under the traction of the pull rope 24 and the tension of the tension spring, so that the elastic sheet 3 can be stabilized in the groove 6, and the shell 2 can be stably attached to the substrate 1; the inclined direction of the end part of the pull rope 24 is set, so that the vertical downward component force of the pull rope 24 acts on the cross rod 25, and meanwhile, the cross rod 25 presses down the compression part 4 again, so that the stability of the elastic sheet 3 in the groove 6 is improved again, and the stable connection between the substrate 1 and the shell 2 is improved.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. An IGBT packaging shell comprises an IGBT packaging module, wherein the IGBT packaging module comprises a substrate (1) and a shell (2); the method is characterized in that: the two sides of the substrate (1) are symmetrically and fixedly connected with elastic pieces (3), and the elastic pieces (3) comprise extrusion parts (4) and pressing parts (5); the extrusion part (4) is U-shaped, the upper end of the extrusion part (4) is fixedly connected with a pressing part (5) which is tilted upwards, and the corner position of the extrusion part (4) is extruded on the shell (2); the end part of the shell (2) is provided with an arc-shaped groove (6), the shape of the groove (6) is the same as the corner shape of the extrusion part (4), and the corner position of the extrusion part (4) is extruded in the groove (6);
the lower end of the extrusion part (4) is fixedly connected with a fixing plate, and the fixing plate comprises an L-shaped part (8) and a horizontal part (9); one end of the L-shaped part (8) is fixedly connected with the lower part of the extrusion part (4), the other end of the L-shaped part (8) is fixedly connected with the horizontal part (9), a gap is reserved between the other end of the L-shaped part (8) and the horizontal part (9), and the other end of the L-shaped part (8) and the horizontal part (9) are embedded into fixing grooves (10) formed in two sides of the substrate (1).
2. The IGBT package of claim 1 wherein: a limiting pin (11) is arranged on the inner top surface of the fixed groove (10); the surface of the other end of the L-shaped part (8) is provided with a fixing hole (12), the other end of the L-shaped part (8) is embedded in the fixing groove (10), and the end part of the limiting pin (11) is embedded in the fixing hole (12).
3. The IGBT package of claim 1 wherein: limiting grooves (13) are symmetrically formed in the upper surface of the horizontal part (9); limiting grooves (13) are also formed in the lower surface of the other end of the L-shaped part (8), and compression springs (14) are arranged in the two opposite limiting grooves (13).
4. The IGBT package of claim 1 wherein: the circuit board is characterized in that the upper surfaces of the two sides of the substrate (1) are provided with wire grooves (15), the positions of the wire grooves (15) are provided with rectangular clamping grooves (16), rectangular inserting plates (17) are inserted into the clamping grooves (16), one ends of the inserting plates (17) are provided with arc-removing openings (18), and the other ends of the inserting plates (17) are fixedly connected to the lower surfaces of the two sides of the shell (2).
5. The IGBT package of claim 2 wherein: the fixing groove (10) is communicated with the clamping groove (16); the other end of the L-shaped part (8) is symmetrically provided with a notch (19), the other end of the L-shaped part (8) is inserted into the fixing groove (10), and two sides of one end of the plugboard (17) are embedded into the notch (19).
6. The IGBT package of claim 1 wherein: a plurality of pits (20) are uniformly formed on the inner surface of the groove (6); the corner surface of the extrusion part (4) is provided with a plurality of protruding points (21), the corner of the extrusion part (4) is extruded in the groove (6), and the protruding points (21) are embedded in the concave points (20).
7. The IGBT package of claim 4 wherein: the two sides of the shell (2) are fixedly connected with strip-shaped plates (22), sliding grooves are formed in the strip-shaped plates (22), sliding blocks (23) connected through tension springs are arranged in the sliding grooves, pull ropes (24) are fixedly connected to the end parts of the sliding blocks (23), cross bars (25) are fixedly connected to the end parts of the pull ropes (24), and the cross bars (25) are embedded in the inner corner positions of the extrusion parts (4).
8. The IGBT package of claim 7 wherein: the end part of the pull rope (24) extends obliquely upwards and is fixedly connected with the end part of the cross rod (25).
9. The IGBT package of claim 4 wherein: the end of the base plate (1) is provided with a strip-shaped groove, the strip-shaped groove is arranged along the width of the shell (2), and a roller body (26) is rotatably connected in the strip-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211583593.XA CN115775772B (en) | 2022-12-09 | 2022-12-09 | IGBT packaging shell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211583593.XA CN115775772B (en) | 2022-12-09 | 2022-12-09 | IGBT packaging shell |
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| CN115775772A CN115775772A (en) | 2023-03-10 |
| CN115775772B true CN115775772B (en) | 2023-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2749091Y (en) * | 2004-10-05 | 2005-12-28 | 富士康(昆山)电脑接插件有限公司 | Socket connector |
| CN206895131U (en) * | 2017-07-21 | 2018-01-16 | 重庆力华自动化技术有限责任公司 | A kind of briquetting suitable for power device assembling |
| CN209390454U (en) * | 2018-10-13 | 2019-09-13 | 深圳市先航电子技术有限公司 | A kind of connection structure of circuit board |
| CN212848936U (en) * | 2020-08-21 | 2021-03-30 | 安费诺电子装配（厦门）有限公司 | Wire end connector and connector assembly |
| CN215579167U (en) * | 2021-09-02 | 2022-01-18 | 浙江极智电气有限公司 | Circuit board shell |
| CN114883273A (en) * | 2022-06-30 | 2022-08-09 | 烟台台芯电子科技有限公司 | Crimping formula IGBT module packaging hardware |
-
2022
- 2022-12-09 CN CN202211583593.XA patent/CN115775772B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2749091Y (en) * | 2004-10-05 | 2005-12-28 | 富士康(昆山)电脑接插件有限公司 | Socket connector |
| CN206895131U (en) * | 2017-07-21 | 2018-01-16 | 重庆力华自动化技术有限责任公司 | A kind of briquetting suitable for power device assembling |
| CN209390454U (en) * | 2018-10-13 | 2019-09-13 | 深圳市先航电子技术有限公司 | A kind of connection structure of circuit board |
| CN212848936U (en) * | 2020-08-21 | 2021-03-30 | 安费诺电子装配（厦门）有限公司 | Wire end connector and connector assembly |
| CN215579167U (en) * | 2021-09-02 | 2022-01-18 | 浙江极智电气有限公司 | Circuit board shell |
| CN114883273A (en) * | 2022-06-30 | 2022-08-09 | 烟台台芯电子科技有限公司 | Crimping formula IGBT module packaging hardware |
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|---|---|
| CN115775772A (en) | 2023-03-10 |
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