A compression-type SiC power module packaging structure

Abstract

The invention discloses a compression-type SiC power module packaging structure, comprising a mounting platform and a pressing plate used in conjunction with the SiC power module, wherein the mounting platform is fixedly connected with a mounting frame, a movable seat is slidably arranged on the mounting frame, a placing platform is fixedly connected with the movable seat, a plurality of groups of bar boxes used in conjunction with the SiC power module are longitudinally embedded in sequence along the left and right directions on the placing platform, and the pressing plate is located above the bar boxes, and a pneumatic component used in conjunction with the pressing plate and the SiC power module is arranged on the bracket, and by arranging the pneumatic component, external air can be uniformly filled into the fixed cylinder, and a gas flow meter is used to accurately control the air intake amount, so as to accurately control the downward movement speed and downward movement position of the piston rod, so that the pressing plate can accurately control the compression force when the SiC power module is compression-packaged, and the pneumatic method can effectively avoid direct hard contact of other mechanical transmissions.

Description

Technical Field

[0001] The present invention relates to the technical field of SiC power module packaging, and in particular to a compression-type SiC power module packaging structure. Background Art

[0002] A power module is a power electronic device that is packaged into a module according to a certain functional combination. Extension: An intelligent power module is an advanced hybrid integrated power component with IGBT as the core. It consists of a high-speed, low-power die (IGBT) and an optimized gate drive circuit, as well as a fast protection circuit. A SiC power module is a power module that uses silicon carbide semiconductors as switches. Silicon carbide power modules are used to convert electrical energy with high conversion efficiency. Power refers to the product of current and voltage. When packaging SiC power modules, crimping is currently used.

[0003] However, traditional SiC power modules are mostly crimped in a rigid direct crimping contact during crimping packaging, and the crimping force cannot be well controlled. This will directly lead to the internal components of the SiC power module being easily damaged due to excessive force during the crimping process. If the crimping force is not in place, the SiC power module cannot be perfectly crimped. Therefore, a crimping type SiC power module packaging structure is proposed. Summary of the invention

[0004] The purpose of the present invention is to provide a crimping type SiC power module packaging structure to solve the problem that the conventional SiC power module mentioned in the above background technology is mostly a hard direct crimping contact during crimping packaging, and the crimping force cannot be well controlled.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a compression-type SiC power module packaging structure, comprising a mounting platform and a pressure plate used in conjunction with the SiC power module, wherein the mounting platform is fixedly connected with a mounting frame, a bracket is fixedly connected to the back of the top of the mounting frame and the pressure plate is located in the bracket, a movable seat is slidably arranged on the mounting frame, a placement platform is fixedly connected to the movable seat, a plurality of groups of strip boxes used in conjunction with the SiC power module are longitudinally embedded in sequence along the left-right direction on the placement platform, and the pressure plate is located above the strip boxes, and two groups of air holes are longitudinally opened symmetrically along the front-to-back direction on each group of the strip boxes, a force unloading component used in conjunction with the movable seat and the placement platform is arranged in the mounting frame, a pneumatic component used in conjunction with the pressure plate and the SiC power module is arranged on the bracket, and a control box is fixedly connected to one side of the mounting platform through an extension frame.

[0006] Preferably, the pneumatic assembly includes an air pump fixedly connected to the back of the bracket, the air inlet end of the air pump is connected to an air inlet pipe, the air outlet end of the air pump is connected to a vertical pipe, the backs of the multiple groups of strip boxes are connected to a connecting frame, the four ends of the connecting frame close to the strip box are each provided with a first valve, the end of the connecting frame away from the strip box is connected to the air inlet pipe, a telescopic pipe structure is provided at the middle section of the connecting frame, a first solenoid valve is provided on the inlet pipe and the first solenoid valve is located on the back of the connecting frame, the back of the vertical pipe is connected to an auxiliary pipe, the auxiliary pipe is provided with a second solenoid valve, the vertical pipe is provided with a third solenoid valve and the third solenoid valve is located above the second solenoid valve, the front of the strip box is connected to a longitudinal pipe, the longitudinal pipe is provided with a second valve, the inlet pipe is provided with a gas flow meter and the gas flow meter is located on a side close to the connecting frame and the first solenoid valve, and the back of the bracket is provided with a strip groove for use with the connecting frame.

[0007] Preferably, the pneumatic component also includes two groups of fixed cylinders symmetrically embedded in the bracket along the left and right directions, a piston rod is slidably arranged in the fixed cylinder and the bottom end of the piston rod is fixedly connected to the pressure plate, the top of the back side of the fixed cylinder is connected to a U-shaped pipe and the top end of the vertical pipe is connected to the U-shaped pipe, a first spring is wound on the piston rod and the bottom end of the first spring is fixedly connected to the bottom of the inner cavity of the fixed cylinder, the bottom of the back side of the fixed cylinder is connected to an extension pipe and the back side of the extension pipe passes through the bracket and extends to the back side, both sides of the vertical pipe are connected to L-shaped pipes, the end of the L-shaped pipe away from the vertical pipe is connected to the extension pipe, a fourth solenoid valve is arranged on the extension pipe and the fourth solenoid valve is located on the back side of the L-shaped pipe, a fifth solenoid valve is arranged on the L-shaped pipe, an exhaust pipe is arranged on the U-shaped pipe, and a sixth solenoid valve is arranged on the exhaust pipe.

[0008] Preferably, the force unloading assembly includes a second spring fixedly connected to the front and back sides of the bottom of the moving seat in sequence along the left-right direction, and the bottom end of the second spring is fixedly connected to the bottom of the inner cavity of the mounting frame, and the bottom of the inner cavity of the mounting frame is symmetrically provided with two groups of first airbags along the front-to-back direction, and the top of the first airbag is attached to the moving seat, and both ends of each group of the first airbags are connected to a hose, and the end of the hose away from the first airbag is connected to an auxiliary tube, and multiple groups of auxiliary tubes are symmetrically embedded in the mounting frame along the left-right direction, and a third spring is fixedly connected to the top of the inner cavity of each group of the auxiliary tubes, and the bottom end of the third spring is fixedly connected to a disc, and the disc is located above the hose.

[0009] Preferably, the force unloading assembly also includes a fixed frame fixedly connected to both sides of the mounting frame, a second airbag is arranged in the fixed frame, the first airbag is connected to a ventilation duct frame, both ends of the ventilation duct frame away from the second airbag are penetrated into the mounting frame and connected to the top of one side of the auxiliary cylinder, and two groups of slides are symmetrically arranged for sliding along the front-to-back direction in each group of the fixed frames, the sides of the two adjacent groups of slides close to each other are affixed to the second airbag, and the sides of the two adjacent groups of slides away from each other are symmetrically fixedly connected with auxiliary rods along the up-down direction, the end of the auxiliary rod away from the slide passes through the fixed frame and is fixedly connected to the limiting protrusion, a fourth spring is wound on the auxiliary rod, and the two ends of the fourth spring are respectively fixedly connected to the inner wall of the slide and the fixed frame.

[0010] Preferably, there is a certain distance between the placement platform and the installation frame, and strip cushions are fixedly connected to both sides of the bottom of the placement platform.

[0011] Preferably, mounting blocks are fixedly connected to both sides of the top of the front side of the bracket, vertical poles are fixedly connected to the four sides of the top of the pressure plate, and the top of the vertical pole passes through the mounting block and the bracket and is fixedly connected to a locking block.

[0012] Preferably, a plurality of chambers are sequentially opened on the front side of the movable seat along the left-right direction, and the bottom width of the movable seat is greater than the top width of the movable seat.

[0013] Preferably, both sides of the movable seat are fixedly connected with positioning transverse plates, and the top of the positioning transverse plates is fitted on the top of the inner cavity of the installation frame.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In the present invention, by setting a pneumatic component, using an air pump to provide suction, and controlling the second solenoid valve and a group of first valves to be used to open, the air in the strip box connected to the first valve to be used can be quickly extracted to keep the inside of the strip box in a vacuum state, so that the SiC power module to be pressed can be quickly adsorbed and positioned using the air vents, and the air pump is used through the air source, and by controlling the opening and closing of the third solenoid valve, the fourth solenoid valve, the fifth solenoid valve and the sixth solenoid valve, the outside air can be uniformly filled into the fixed cylinder, and the gas flow meter is used to accurately control the air intake volume, so as to accurately control the downward speed and downward position of the piston rod, so that the pressing plate can accurately control the pressing force when pressing and packaging the SiC power module, and the pneumatic method can effectively avoid direct hard contact of other mechanical transmissions.

[0016] 2. In the present invention, by setting a force unloading component, when the pressure plate contacts the SiC power module, it will prompt the placement platform and the movable seat to compress the first airbag. At this time, the resistance generated by the deformation of the first airbag can be used to initially buffer the SiC power module, the placement platform and the movable seat, and the gas in the first airbag can compress the third spring with the assistance of the disc, and at this time, the gas above the disc will cause the second airbag to continuously expand and push the slide plate to compress the fourth spring. At this time, the elastic rebound of the third and fourth springs and the resistance generated when the second airbag expands can effectively buffer the placement platform and the movable seat again, and then the SiC power module can be buffered, further preventing hard pressing, and the vibration force generated when the pressure plate contacts the SiC power module can be offset, further improving the pressing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a compression-type SiC power module packaging structure of the present invention;

[0018] Figure 2 This is a structural rear view of a compression-type SiC power module packaging structure of the present invention;

[0019] Figure 3 for Figure 2 A magnified view of the structure at center A;

[0020] Figure 4 It is a partial cross-sectional view of the structure of the installation frame of the present invention;

[0021] Figure 5 It is a partial cross-sectional view of the structure of the strip box and the fixed cylinder of the present invention;

[0022] Figure 6 It is a partial cross-sectional view of the structure of the auxiliary cylinder of the present invention;

[0023] Figure 7 It is a bottom view of the structure of the movable seat of the present invention.

[0024] In the figure: 1, mounting table; 2, mounting frame; 3, bracket; 4, pressing plate; 5, moving seat; 6, placing platform; 7, bar box; 8, air vent; 9, connecting frame; 10, first valve; 11, longitudinal pipeline; 12, air pump; 13, air intake pipeline; 14, control box; 15, vertical pipe; 16, auxiliary pipeline; 17, first solenoid valve; 18, second solenoid valve; 19, gas flow meter; 20, positioning horizontal plate; 21, third solenoid valve; 22, fixed cylinder; 23, piston rod; 24. First spring; 25. U-shaped pipe; 26. Extension pipe; 27. Fourth solenoid valve; 28. L-shaped pipe; 29. ​​Fifth solenoid valve; 30. Exhaust pipe; 31. Sixth solenoid valve; 32. Mounting block; 33. Vertical pole; 34. First airbag; 35. Second spring; 36. Hose; 37. Auxiliary cylinder; 38. Disc; 39. Third spring; 40. Ventilation pipe frame; 41. Fixed frame; 42. Second airbag; 43. Slide plate; 44. Auxiliary pole; 45. Fourth spring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] See also Figure 1-7The present invention provides a technical solution: a compression-type SiC power module packaging structure, comprising a mounting platform 1 and a pressing plate 4 used in conjunction with the SiC power module, the mounting platform 1 is fixedly connected with a mounting frame 2, the back of the top of the mounting frame 2 is fixedly connected with a bracket 3 and the pressing plate 4 is located in the bracket 3, both sides of the top of the front of the bracket 3 are fixedly connected with mounting blocks 32, the top of the pressing plate 4 is fixedly connected with a vertical rod 33, the top of the vertical rod 33 passes through the mounting block 32 and the bracket 3 and is fixedly connected with a locking block, the design of the mounting block 32 and the vertical rod 33 can slide and limit the pressing plate 4, thereby improving the stability of the pressing plate 4 when moving, and the mounting frame A movable seat 5 is slidably arranged on the frame 2, and a placing platform 6 is fixedly connected to the movable seat 5. A plurality of groups of bar boxes 7 used in conjunction with SiC power modules are longitudinally embedded in the placing platform 6 in sequence along the left-right direction, and the pressing plate 4 is located above the bar boxes 7. Two groups of air holes 8 are longitudinally opened symmetrically along the front-back direction on each group of bar boxes 7. There is a certain distance between the placing platform 6 and the mounting frame 2 to provide a certain buffering distance for the placing platform 6. Both sides of the bottom of the placing platform 6 are fixedly connected with strip cushions. The design of the strip cushions can assist in buffering on the one hand, and can prevent the placing platform 6 from directly contacting the mounting frame 2 on the other hand, thereby generating noise and vibration.

[0028] The support 3 is provided with a pneumatic assembly used in conjunction with the pressure plate 4 and the SiC power module, and the pneumatic assembly includes an air pump 12 fixedly connected to the back of the support 3, the air inlet end of the air pump 12 is connected to an air inlet pipe 13, and the air outlet end of the air pump 12 is connected to a vertical pipe 15. The backs of the multiple groups of strip boxes 7 are connected to a connecting frame 9, and the four ends of the connecting frame 9 close to the strip boxes 7 are all provided with a first valve 10. The end of the connecting frame 9 away from the strip box 7 is connected to the air inlet pipe 13, and a telescopic pipe structure is provided in the middle section of the connecting frame 9, so that the connecting frame 9 can move with the movement of the moving seat 5. A first solenoid valve 17 is provided on the air inlet pipe 13 and the first solenoid valve 17 is located on the back of the connecting frame 9. The vertical pipe 1 The back of the support 5 is connected with an auxiliary pipeline 16, and a second solenoid valve 18 is arranged on the auxiliary pipeline 16. The vertical pipe 15 is provided with a third solenoid valve 21 and the third solenoid valve 21 is located above the second solenoid valve 18. The front of the strip box 7 is connected with a longitudinal pipeline 11, and a second valve is arranged on the longitudinal pipeline 11. By controlling the opening and closing of the second valve, the opening and closing of the longitudinal pipeline 11 can be controlled to quickly release the vacuum state in the strip box 7. A gas flow meter 19 is arranged on the air intake pipeline 13 and the gas flow meter 19 is located on the side where the connecting frame 9 and the first solenoid valve 17 are close to each other. A strip groove used in conjunction with the connecting frame 9 is opened on the back of the support 3. The pneumatic component also includes a symmetrical left-right direction. Two groups of fixed cylinders 22 are embedded in the bracket 3, a piston rod 23 is slidably arranged in the fixed cylinder 22, and the bottom end of the piston rod 23 is fixedly connected to the pressure plate 4, the top of the back of the fixed cylinder 22 is connected to a U-shaped pipe 25, and the top of the vertical pipe 15 is connected to the U-shaped pipe 25, a first spring 24 is wound around the piston rod 23, and the bottom end of the first spring 24 is fixedly connected to the bottom of the inner cavity of the fixed cylinder 22, the bottom of the back of the fixed cylinder 22 is connected to an extension pipe 26, and the back of the extension pipe 26 passes through the bracket 3 and extends to the back, both sides of the vertical pipe 15 are connected to an L-shaped pipe 28, and the end of the L-shaped pipe 28 away from the vertical pipe 15 is connected to the extension pipe 26, and the extension pipe 26 is provided with a fourth solenoid valve 27 and The fourth solenoid valve 27 is located on the back of the L-shaped pipe 28, the fifth solenoid valve 29 is arranged on the L-shaped pipe 28, the exhaust pipe 30 is arranged on the U-shaped pipe 25, and the sixth solenoid valve 31 is arranged on the exhaust pipe 30. By setting the pneumatic components, the outside air can be filled into the fixed cylinder 22 at a uniform speed, and the gas flow meter 19 is used to accurately control the intake volume, so as to accurately control the downward movement speed and downward movement position of the piston rod 23, so that the pressing plate 4 can accurately control the pressing force when pressing and packaging the SiC power module, and the pneumatic method can effectively avoid direct hard contact with other mechanical transmissions. One side of the mounting table 1 is fixedly connected to the control box 14 through an extension frame.

[0029] Example 2

[0030] On the basis of the first embodiment, this embodiment takes into account the need to further buffer the placement platform 6, the movable seat 5 and the SiC power module to prevent hard pressing, and the need to offset the vibration force generated when the pressure plate 4 contacts the SiC power module, thereby improving the pressing accuracy. Therefore, a force unloading component is provided in this embodiment, and the force unloading component includes a second spring 35 which is fixedly connected to the front and back sides of the bottom of the movable seat 5 in sequence along the left and right directions, and the bottom end of the second spring 35 is fixedly connected to the bottom of the inner cavity of the mounting frame 2, and two groups of first airbags 34 are symmetrically arranged at the bottom of the inner cavity of the mounting frame 2 along the front-to-back direction, and the top of the first airbag 34 is attached to the movable seat 5, and the front side of the movable seat 5 is along the left and right directions. Multiple groups of chambers are opened in sequence. The design of the chambers reduces the weight of the movable seat 5. The bottom width of the movable seat 5 is greater than the top width of the movable seat 5, which increases the bottom area of ​​the movable seat 5 to prevent the first airbag 34 from contacting the second spring 35 when deformed. Both sides of the movable seat 5 are fixedly connected with a positioning cross plate 20. The top of the positioning cross plate 20 fits on the top of the inner cavity of the mounting frame 2. The design of the positioning cross plate 20 can limit the movable seat 5. Both ends of each group of first airbags 34 are connected with a hose 36. The end of the hose 36 away from the first airbag 34 is connected with an auxiliary tube 37, and multiple groups of auxiliary tubes 37 are symmetrically embedded in the mounting frame 2 along the left and right directions. A third spring 39 is fixedly connected to the top of the cavity, a disc 38 is fixedly connected to the bottom end of the third spring 39 and the disc 38 is located above the hose 36, the unloading assembly also includes a fixed frame 41 fixedly connected to both sides of the mounting frame 2, a second airbag 42 is arranged in the fixed frame 41, a ventilation duct frame 40 is connected to the first airbag 34, both ends of the ventilation duct frame 40 away from the second airbag 42 are penetrated into the mounting frame 2 and connected to the top of one side of the auxiliary cylinder 37, and two groups of slide plates 43 are symmetrically arranged in each group of fixed frames 41 along the front-to-back direction. The sides of the two adjacent groups of slide plates 43 that are close to each other are attached to the second airbag 42, and the sides of the two adjacent groups of slide plates 43 that are away from each other are along the upper and lower sides. An auxiliary rod 44 is symmetrically fixedly connected to the slide plate 43, and one end of the auxiliary rod 44 away from the slide plate 43 passes through the fixed frame 41 and is fixedly connected to the limiting protrusion. A fourth spring 45 is wound around the auxiliary rod 44, and the two ends of the fourth spring 45 are respectively fixedly connected to the inner walls of the slide plate 43 and the fixed frame 41. By setting a force unloading component, the elastic rebound of the third spring 39 and the fourth spring 45 and the resistance generated when the second airbag 42 expands can be used to effectively buffer the placement platform 6 and the moving seat 5 again, and then the SiC power module can be buffered, further preventing hard pressing, and can offset the vibration force generated when the pressure plate 4 contacts the SiC power module, further improving the pressing accuracy.

[0031] Working principle: The user places the SiC power module to be pressed on the strip box 7 on the placement platform 6. At this time, the bottom of the SiC power module will contact with one or more groups of air holes 8 on the strip boxes 7. At the same time, the user turns on the vacuum pump 12 and the second solenoid valve 18 through the control box 14 and manually opens the corresponding first valve 10. The other solenoid valves are all in a closed state, so that the closed state of the connecting end of the auxiliary pipeline 16 and the corresponding connecting frame 9 can be released. Then the vacuum pump 12 can quickly extract the gas in the strip box 7 through the connecting frame 9 and quickly discharge it through the auxiliary pipeline 16 until the strip box 7 is evacuated to a vacuum state. At this time, the SiC power module can be quickly adsorbed and positioned using the air holes 8. After the positioning is completed, the auxiliary pipeline 1 6 and the corresponding first valve 10 are closed to maintain a vacuum state, and then the user opens the first solenoid valve 17, the third solenoid valve 21 and the fourth solenoid valve 27 through the control box 14. At this time, the vacuum pump 12 can transmit the outside air to the fixed cylinder 22 through the intake pipe 13, the vertical pipe 15 and the U-shaped pipe 25. As the gas is continuously filled, the piston rod 23 is pushed to drive the pressure plate 4 to move downward smoothly, and the gas under the fixed cylinder 22 is discharged through the extension pipe 26, and the first spring 24 is compressed to further buffer the piston rod 23. At this time, the gas flow meter 19 accurately controls the intake amount, so as to accurately control the downward movement speed and downward movement position of the piston rod 23 and the pressure plate 4, and then the pressure plate 4 can be pushed to accurately press the SiC power module. When the package is closed, the pressing force can be accurately controlled. At the same time, the pneumatic method can effectively avoid direct hard contact with other mechanical transmissions. After the pressing is completed, the fifth solenoid valve 29 and the sixth solenoid valve 31 can be used to control the L-shaped pipe 28 and the exhaust pipe 30 to open. At this time, the second solenoid valve 18, the third solenoid valve 21 and the fourth solenoid valve 27 are controlled to be closed, so that the outside air can be filled from the bottom of the fixed cylinder 22, so that the piston rod 23 and the pressing plate 4 can move up at a uniform speed. At the same time, when the pressing plate 4 contacts the SiC power module, it will prompt the placement platform 6 and the moving seat 5 to move down synchronously and compress the two groups of first air bags 34. At this time, the first air bags 34 will be deformed by the force. The resistance generated by the deformation of the first air bags 34 can be used to press the placement platform 6 and The movable seat 5 is buffered, and at the same time, the gas in the first airbag 34 is transmitted to the auxiliary cylinder 37 through the hose 36, and the impact disk 38 is moved upward and the third spring 39 is compressed. At this time, the gas above the disk 38 is transmitted to the second airbag 42 through the ventilation duct frame 40, so that the second airbag 42 is continuously expanded and pushes the slide plate 43 to compress the fourth spring 45. At this time, the elastic rebound of the third spring 39 and the fourth spring 45 and the resistance generated when the second airbag 42 expands can effectively buffer the placement platform 6 and the movable seat 5 again, so that the SiC power module can be buffered, further preventing hard pressing, and the vibration force generated when the pressure plate 4 contacts the SiC power module can be offset, further improving the pressing accuracy.

[0032] However, as is well known to those skilled in the art, the working principles and wiring methods of the control box 14, the vacuum pump 12 and the gas flow meter 19 are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art may make any optional selections according to their needs or convenience.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compression-type SiC power module packaging structure, comprising a mounting platform (1) and a compression plate (4) used in conjunction with the compression-type SiC power module, characterized in that: The mounting platform (1) is fixedly connected to a mounting frame (2), a bracket (3) is fixedly connected to the back of the top of the mounting frame (2) and a pressure plate (4) is located in the bracket (3), a movable seat (5) is slidably provided on the mounting frame (2), a placement platform (6) is fixedly connected to the movable seat (5), a plurality of groups of strip boxes (7) used in conjunction with the SiC power module are longitudinally embedded in the placement platform (6) in sequence along the left-right direction, and the pressure plate (4) is located above the strip boxes (7), each group of the strip boxes (7) is longitudinally opened symmetrically along the front-back direction with two groups of air holes (8), a force unloading component used in conjunction with the movable seat (5) and the placement platform (6) is provided in the mounting frame (2), a pneumatic component used in conjunction with the pressure plate (4) and the SiC power module is provided on the bracket (3), and a control box (14) is fixedly connected to one side of the mounting platform (1) via an extension frame; The pneumatic assembly comprises an air pump (12) fixedly connected to the back of the bracket (3); the air inlet end of the air pump (12) is connected to an air inlet pipe (13); the air outlet end of the air pump (12) is connected to a vertical pipe (15); the backs of the plurality of groups of the strip boxes (7) are connected to a connecting frame (9); the four ends of the connecting frame (9) close to the strip boxes (7) are all provided with a first valve (10); the end of the connecting frame (9) away from the strip boxes (7) is connected to the air inlet pipe (13); a telescopic pipe structure is provided at the middle section of the connecting frame (9); the air inlet pipe (13) is provided with a first solenoid valve (17) and the first solenoid valve (17) is located on the connecting frame (9). The back of the vertical pipe (15) is connected to an auxiliary pipe (16), and a second solenoid valve (18) is arranged on the auxiliary pipe (16). The vertical pipe (15) is provided with a third solenoid valve (21), and the third solenoid valve (21) is located above the second solenoid valve (18). The front of the strip box (7) is connected to a longitudinal pipe (11), and a second valve is arranged on the longitudinal pipe (11). A gas flow meter (19) is arranged on the air intake pipe (13), and the gas flow meter (19) is located on a side where the connecting frame (9) and the first solenoid valve (17) are close to each other. The back of the bracket (3) is provided with a strip groove for use with the connecting frame (9); The pneumatic assembly further comprises two groups of fixed cylinders (22) symmetrically embedded in the bracket (3) along the left-right direction, a piston rod (23) being slidably arranged in the fixed cylinder (22) and the bottom end of the piston rod (23) being fixedly connected to the pressure plate (4), the top of the back side of the fixed cylinder (22) being connected to a U-shaped pipe (25) and the top end of the vertical pipe (15) being connected to the U-shaped pipe (25), a first spring (24) being wound around the piston rod (23) and the bottom end of the first spring (24) being fixedly connected to the bottom of the inner cavity of the fixed cylinder (22), the bottom of the back side of the fixed cylinder (22) being connected to an extension pipe ( The vertical pipe (15) is connected to the extension pipe (26) and the back side of the extension pipe (26) passes through the bracket (3) and extends to the back side, both sides of the vertical pipe (15) are connected to L-shaped pipes (28), one end of the L-shaped pipe (28) away from the vertical pipe (15) is connected to the extension pipe (26), a fourth solenoid valve (27) is provided on the extension pipe (26) and the fourth solenoid valve (27) is located on the back side of the L-shaped pipe (28), a fifth solenoid valve (29) is provided on the L-shaped pipe (28), an exhaust pipe (30) is provided on the U-shaped pipe (25), and a sixth solenoid valve (31) is provided on the exhaust pipe (30).

2. A compression-type SiC power module packaging structure according to claim 1, characterized in that: The unloading assembly comprises a second spring (35) which is fixedly connected to the front and back sides of the bottom of the movable seat (5) in sequence along the left-right direction, and the bottom end of the second spring (35) is fixedly connected to the bottom of the inner cavity of the mounting frame (2), two groups of first air bags (34) are symmetrically arranged at the bottom of the inner cavity of the mounting frame (2) along the front-back direction, and the top of the first air bag (34) is attached to the movable seat (5), both ends of each group of the first air bags (34) are connected to a hose (36), one end of the hose (36) away from the first air bag (34) is connected to an auxiliary cylinder (37), and a plurality of groups of auxiliary cylinders (37) are symmetrically embedded in the mounting frame (2) along the left-right direction, and the top of each group of the inner cavity of the auxiliary cylinder (37) is fixedly connected to a third spring (39), and the bottom end of the third spring (39) is fixedly connected to a disk (38), and the disk (38) is located above the hose (36).

3. A compression-type SiC power module packaging structure according to claim 2, characterized in that: The unloading assembly further comprises a fixing frame (41) fixedly connected to both sides of the mounting frame (2), a second airbag (42) being arranged in the fixing frame (41), a ventilation duct frame (40) being connected to the first airbag (34), both ends of the ventilation duct frame (40) away from the second airbag (42) being passed through the mounting frame (2) and being connected to the top of one side of the auxiliary cylinder (37), two sets of slide plates (43) being symmetrically arranged in each set of the fixing frames (41) for sliding movement along the front-rear direction, and two adjacent sets of slide plates (43) being symmetrically arranged in the front-rear direction for sliding movement. The sides of the slide plates (43) of the groups that are close to each other are attached to the second airbag (42), and the sides of the slide plates (43) of the two adjacent groups that are away from each other are symmetrically fixedly connected to auxiliary rods (44) in the up-down direction, and one end of the auxiliary rod (44) away from the slide plates (43) passes through the fixed frame (41) and is fixedly connected to the limiting protrusion, and a fourth spring (45) is wound around the auxiliary rod (44), and the two ends of the fourth spring (45) are respectively fixedly connected to the inner wall of the slide plate (43) and the fixed frame (41).

4. The compression-type SiC power module packaging structure according to claim 1, characterized in that: There is a certain distance between the placement platform (6) and the installation frame (2), and strip-shaped soft pads are fixedly connected to both sides of the bottom of the placement platform (6).

5. The compression-type SiC power module packaging structure according to claim 1, characterized in that: Both sides of the front top of the bracket (3) are fixedly connected to mounting blocks (32), and the four sides of the top of the pressure plate (4) are fixedly connected to vertical rods (33), and the top of the vertical rod (33) passes through the mounting block (32) and the bracket (3) and is fixedly connected to a locking block.

6. The compression-type SiC power module packaging structure according to claim 1, characterized in that: The front side of the movable seat (5) is provided with a plurality of groups of chambers in sequence along the left-right direction, and the bottom width of the movable seat (5) is greater than the top width of the movable seat (5).

7. The compression-type SiC power module packaging structure according to claim 1, characterized in that: Both sides of the movable seat (5) are fixedly connected with positioning transverse plates (20), and the top of the positioning transverse plates (20) is attached to the top of the inner cavity of the installation frame (2).

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