Multi-power module assembly and packaging method thereof

Abstract

The invention relates to the technical field of power supply modules, and discloses a multi-power supply module assembly, which comprises a plurality of power supply module bodies and a circuit board used for installing the plurality of power supply module bodies, and is characterized in that the upper surface of the circuit board is provided with a plurality of pin connecting seats matched with the power supply module bodies; a plurality of inverted-U-shaped connecting pins are arranged on the lower surface of each power module body, connecting grooves matched with the connecting pins are formed in the upper side faces of the pin connecting bases, clamping tables are arranged on the inner side walls of the connecting grooves, and clamping protrusions matched with the clamping tables are fixedly connected to the two ends of each connecting pin. According to the invention, the connecting pins are aligned with the connecting grooves, and the power module body is pressed forcibly until the clamping protrusions are clamped at the positions of the clamping tables, so that the power module body and the circuit board can be mounted or dismounted in the later period conveniently, the service life of the power module body is prolonged, and the packaging cost between the power module body and the circuit board is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of power modules, and in particular to a multi-power module component and a packaging method thereof. Background Art

[0002] A power module is a power converter that can be directly soldered and plugged into a circuit board. The main function of the power module is power conversion. It can convert AC or DC power into the AC or DC power you need.

[0003] After searching, the patent with the patent publication number CN215187770U discloses a multi-power module constant power output power module, including a base plate and a push rod, a power module body is arranged above the base plate, a handle is arranged above the base plate, a connecting rod is fixedly connected to the bottom end of the handle, the push rod is arranged inside the base plate, a rotating shaft is sleeved at both ends of the push rod, a bearing block is rotatably connected to the top end of the push rod, and a retaining block is rotatably connected to the bottom end of the push rod. Beneficial effects of the utility model: the utility model utilizes the design of the push rod and the rotating shaft to link the movement of the bearing block and the retaining block, changes the horizontal movement of the retaining block by controlling the vertical movement of the bearing block, and achieves the effect of fixing the position of the extension block through the cooperation of the retaining block and the through groove, utilizes the design of the slider and the slide groove to ensure that the limit block can only move in the vertical direction, thereby ensuring the movement direction of the push rod and avoiding the movement disorder of the various structures inside the limit groove.

[0004] The above patent has obvious beneficial effects, but still has the following shortcomings in actual operation:

[0005] In the above-mentioned comparative document, the power module body is fixedly mounted on the base plate by inserting a fixing block into the through groove. However, in reality, the power module is mounted on a circuit board. The thickness of the circuit board is relatively thin, and it is difficult to open special-shaped limit grooves on the circuit board, which increases the cost of packaging the overall power module. Therefore, the art urgently needs to improve the multi-power module assembly and the packaging method thereof, so as to solve the defects of the prior art. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a multi-power module assembly and a packaging method thereof, which facilitates the installation or later disassembly between the power module body and the circuit board, and improves the service life of the power module body, while reducing the packaging cost between the power module body and the circuit board.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] In the first aspect, the present invention provides a multi-power module assembly, comprising a plurality of power module bodies, and also comprising a circuit board for mounting the plurality of power module bodies, the upper surface of the circuit board is provided with a plurality of pin connection seats adapted to the power module bodies, the lower surface of each of the power module bodies is provided with a plurality of inverted U-shaped connecting pins, the upper side surface of each of the pin connection seats is provided with a connecting groove adapted to the connecting pin, the inner side wall of the connecting groove is provided with a clamping platform, both ends of the connecting pin are fixedly connected with a clamping protrusion adapted to the clamping platform, the side surface of the clamping protrusion is provided with a guide angle adapted to the clamping platform, each adjacent side surface of the connecting pin is provided with a limit release unit for releasing the clamping state of the clamping protrusion and the clamping platform, the circuit board is provided with a protective cover for protecting the plurality of power module bodies, and the protective cover is provided with a heat dissipation unit for dissipating heat from the plurality of power module bodies.

[0009] Preferably, the limit release unit includes a pushing plate movably connected to the pin connecting seat, adjacent sides of the pin connecting seat are provided with connecting grooves connected to the connecting groove, a fixing plate is fixedly connected in the connecting groove, a moving column with one end fixedly connected to one side of the pushing plate passes through the fixing plate, a pressing plate is fixedly connected to the end of the moving column away from the pushing plate, and a spring mounted on the side of the moving column is fixedly connected between the pressing plate and the fixing plate.

[0010] Preferably, the heat dissipation unit includes an air suction hood fixedly connected to the upper part of the protective cover, the upper part of the protective cover is provided with an air inlet adapted to the air suction hood, the inner wall of the air inlet is fixedly connected with a mounting frame, a driving motor is fixedly installed on the upper part of the mounting frame, a rotating shaft is fixedly installed at the output end of the driving motor, a plurality of fan blades are fixedly installed on the side of the rotating shaft, a filter plate with filter holes is fixedly installed at one end of the air suction hood away from the protective cover, and air permeable grooves are penetrated through multiple sides of the protective cover.

[0011] Preferably, one end of the rotating shaft passes through the filter plate and its end is fixedly connected to a clamping block, a clamping sleeve is sleeved on the side of the clamping block, a cleaning scraper whose one side is attached to the filter plate is fixedly connected to the side of the clamping sleeve, and a first threaded column is fixedly connected to the end of the clamping block away from the rotating shaft, and a limiting nut is threadedly connected to the side of the first threaded column.

[0012] Preferably, an elastic support sheet is provided between opposite side surfaces of the two clamping protrusions, and the elastic support sheet is elastic.

[0013] Preferably, both ends of the elastic support sheet are fixedly connected with plug-in blocks, and the two facing sides of the two clamping protrusions are provided with plug-in grooves adapted to the plug-in blocks.

[0014] Preferably, a second threaded column is fixedly connected to the upper portion of the connecting pin, and a first mounting hole adapted to the second threaded column is formed on the lower surface of the power module body.

[0015] Preferably, a third threaded column is fixedly connected to the lower portion of the pin connection seat, and a second mounting hole adapted to the third threaded column is opened on the upper surface of the circuit board.

[0016] Preferably, a plurality of side surfaces of the protective cover are fixedly connected with mounting plates for connecting to a circuit board.

[0017] In a second aspect, the present invention provides a multi-power module packaging method, including the multi-power module assembly described above, the method comprising the following steps:

[0018] S1: Installing a plurality of pin connectors on the circuit board by threading the third threaded column with the second mounting hole;

[0019] S2: Select an appropriate elastic support sheet and install the elastic support sheet by inserting the plug-in block into the plug-in slot;

[0020] S3: Installing a plurality of connecting pins on the lower surface of the power module body by threading the second threaded column with the first mounting hole;

[0021] S4: The clamping protrusion is aligned with the connecting groove, and the connecting pin is inserted into the connecting groove through the guidance of the guide angle, and the clamping protrusion is clamped at the clamping platform position;

[0022] S5: Install the drive motor on the mounting frame, install the filter plate on the air suction hood, and set it on the side of the clamping block through a clamping sleeve, and limit and fix the clamping sleeve through a limiting nut;

[0023] S6: The protective cover is installed on the circuit board through the cooperation of the mounting plate and the fasteners to protect the bodies of several power modules.

[0024] In view of the deficiencies of the prior art, the present invention provides a multi-power module assembly and a packaging method thereof, which overcomes the deficiencies of the prior art. The beneficial effects of the present invention are:

[0025] 1. In the present invention, the connection pins at the lower part of the power module body are aligned with the connection grooves, and the power module body is pressed toward the circuit board until the snap-in protrusion is snap-into the position of the snap-in platform, thereby completing the installation between the power module body and the circuit board, facilitating the installation or later disassembly between the power module body and the circuit board, and prolonging the service life of the power module body, while reducing the packaging cost between the power module body and the circuit board.

[0026] 2. In the present invention, when it is necessary to remove a power module body from the circuit board, two pressing plates are squeezed simultaneously by fingers, and the pressing plates drive the push plates to move in the connecting groove, and the push plates push the clamping protrusions to disengage from the clamping platform. After the two clamping protrusions are disengaged from the clamping platform, the power module body is pulled away from the pin connection seat, and the power module body can be removed, which is convenient for the later removal of the power module body from the pin connection seat.

[0027] 3. In the present invention, the heat dissipation unit is used to dissipate heat from the power module bodies, the filter plate is used to block floating objects in the air, and the filter plate can be cleaned by a cleaning strip, and the cleaning strip is convenient for installation and later replacement.

[0028] 4. In the present invention, the elastic force at both ends of the connecting pin is increased by adding an elastic support sheet, and the plug-in blocks at both ends of the elastic support sheet are plugged into the plug-in slots to complete the installation of the elastic support sheet, thereby improving the stability of the power module body after the plug-in protrusion is plugged into the plug-in platform.

[0029] 5. In the present invention, the connecting pin is installed in the first mounting hole by threading it through the second threaded column. The connecting pin is reusable and can be replaced after being damaged. The pin connecting seat is threadedly connected to the second mounting hole through the third threaded column. When producing the circuit board, only a number of second mounting holes need to be opened. The pin connecting seat is reusable and can be replaced individually after a pin connecting seat is damaged.

[0030] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0032] Figure 1 This is a schematic diagram of the structure of the present invention after overall installation;

[0033] Figure 2 It is a schematic structural diagram of a partial cross-section of the protective cover in the present invention;

[0034] Figure 3 It is a structural schematic diagram of a partial cross-section of a circuit board in the present invention;

[0035] Figure 4 It is a structural schematic diagram of a partial cross-section of the pin connection seat in the present invention;

[0036] Figure 5 It is a structural schematic diagram of the connection pins in the present invention;

[0037] Figure 6 for Figure 2 The enlarged structural diagram at A in the middle;

[0038] Figure 7 for Figure 3 The enlarged structural diagram at B in the middle;

[0039] Figure 8 for Figure 4 The enlarged structural diagram at C in the middle;

[0040] Fig. 9 for Figure 6 Enlarged structural diagram at point D in the middle.

[0041] In the figure: 1. power module body; 2. circuit board; 3. pin connection seat; 4. connecting pin; 5. connecting groove; 6. clamping platform; 7. clamping protrusion; 8. guide angle; 9. protective cover; 10. connecting groove; 11. fixing plate; 12. moving column; 13. pushing plate; 14. pressing plate; 15. spring; 16. air suction cover; 17. air inlet; 18. mounting frame; 19. driving motor; 20. rotating shaft; 21. fan blade; 22. filter plate; 23. ventilation groove; 24. cleaning scraper; 25. clamping block; 26. clamping sleeve; 27. first threaded column; 28. limiting nut; 29. ​​elastic support sheet; 30. plug-in block; 31. plug-in groove; 32. second threaded column; 33. first mounting hole; 34. third threaded column; 35. second mounting hole; 36. mounting plate. DETAILED DESCRIPTION

[0042] 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.

[0043] Embodiment 1

[0044] See also Figure 1-Figure 9A multi-power module assembly includes a plurality of power module bodies 1 and a circuit board 2 for mounting the plurality of power module bodies 1. The upper surface of the circuit board 2 is provided with a plurality of pin connection seats 3 adapted to the power module bodies 1. The lower surface of each power module body 1 is provided with a plurality of inverted U-shaped connecting pins 4. The upper side surface of each pin connection seat 3 is provided with a connecting groove 5 adapted to the connecting pin 4. The inner side wall of the connecting groove 5 is provided with a clamping platform 6. Both ends of the connecting pin 4 are fixedly connected with a clamping protrusion 7 adapted to the clamping platform 6. The side surface of the clamping protrusion 7 is provided with a guide angle 8 adapted to the clamping platform 6. The adjacent side surface of each connecting pin 4 is provided with a limit release unit for releasing the clamping state of the clamping protrusion 7 and the clamping platform 6. The circuit board 2 is provided with a protective cover 9 for protecting the plurality of power module bodies 1. The protective cover 9 is provided with a heat dissipation unit for dissipating heat from the plurality of power module bodies 1.

[0045] Specifically, when it is necessary to package multiple power module bodies 1 on the circuit board 2, align the lower connecting pin 4 of each power module body 1 with the connecting groove 5, and press the power module body 1 in the direction of the circuit board 2 with force. The guide angle 8 has a guiding function. The guide angle 8 squeezes the two clamping protrusions 7 in opposite directions, and continues to press down the power module body 1 until the clamping protrusion 7 is clamped at the position of the clamping platform 6. The installation between the power module body 1 and the circuit board 2 can be completed. When it is necessary to replace a certain power module body 1, the clamping state between the clamping protrusion 7 and the clamping platform 6 is released by the limit release unit. After the power module body 1 is installed, the protective cover 9 is installed on the circuit board 2 to protect the power module body 1. At the same time, a heat dissipation unit is provided on the protective cover 9. The heat dissipation unit is used to dissipate heat for several power module bodies 1, which is convenient for the installation or later disassembly between the power module body 1 and the circuit board 2, and the service life of the power module body 1 is increased, while the packaging cost between the power module body 1 and the circuit board 2 is reduced.

[0046] As a technical optimization scheme of the present invention, the limit release unit includes a pushing plate 13 movably connected in the pin connecting seat 3, and adjacent sides of the pin connecting seat 3 are provided with connecting grooves 10 connected with the connecting groove 5. A fixed plate 11 is fixedly connected in the connecting groove 10, and a moving column 12 is passed through the fixed plate 11, and one end of the moving column 12 is fixedly connected to one side of the pushing plate 13. A pressing plate 14 is fixedly connected to the end of the moving column 12 away from the pushing plate 13, and a spring 15 is fixedly connected between the pressing plate 14 and the fixed plate 11 and is sleeved on the side of the moving column 12.

[0047] Specifically, when it is necessary to remove a power module body 1 from the circuit board 2, the two pressing plates 14 are squeezed simultaneously by fingers, and the two pressing plates 14 move toward each other, and the pressing plates 14 drive the moving column 12 to move. At this time, the spring 15 is compressed, and the moving column 12 slides on the fixed plate 11. The moving column 12 drives the pushing plate 13 to move in the connecting groove 10, and the pushing plate 13 pushes the clamping protrusion 7 to disengage from the clamping platform 6. After the two clamping protrusions 7 are disengaged from the clamping platform 6, the power module body 1 is pulled away from the pin connection seat 3 to remove the power module body 1. After releasing the pressing plate 14, the tension of the spring 15 pushes the pressing plate 14 to reset, which is convenient for the later removal of the power module body 1 from the pin connection seat 3.

[0048] As a technical optimization scheme of the present invention, the heat dissipation unit includes an air suction hood 16 fixedly connected to the upper part of the protective cover 9, an air inlet 17 adapted to the air suction hood 16 is opened on the upper part of the protective cover 9, a mounting frame 18 is fixedly connected to the inner wall of the air inlet 17, a driving motor 19 is fixedly installed on the upper part of the mounting frame 18, a rotating shaft 20 is fixedly installed on the output end of the driving motor 19, a plurality of fan blades 21 are fixedly installed on the side of the rotating shaft 20, a filter plate 22 with filter holes is fixedly installed on the end of the air suction hood 16 away from the protective cover 9, and ventilation grooves 23 are opened through multiple sides of the protective cover 9.

[0049] Specifically, the drive motor 19 is fixedly mounted on the mounting frame 18, and the drive motor 19 is started. The output end of the drive motor 19 drives the rotating shaft 20 to rotate, and the rotating shaft 20 drives the fan blades 21 to rotate, so that the external air is sucked into the protective cover 9 to cool the power module body 1. At the same time, the hot air is discharged through the air permeable groove 23 to form a circulating heat dissipation, thereby extending the service life of the power module body 1. At the same time, the filter plate 22 is used to block large particles floating in the air.

[0050] As a technical optimization solution of the present invention, one end of the rotating shaft 20 passes through the filter plate 22 and its end is fixedly connected to a clamping block 25, a clamping sleeve 26 is sleeved on the side of the clamping block 25, a cleaning scraper 24 whose one side is attached to the filter plate 22 is fixedly connected to the side of the clamping sleeve 26, and a first threaded column 27 is fixedly connected to the end of the clamping block 25 away from the rotating shaft 20, and a limiting nut 28 is threadedly connected to the side of the first threaded column 27.

[0051] Specifically, when the rotating shaft 20 rotates, it drives the cleaning scraper 24 to rotate. One side of the cleaning scraper 24 is in contact with the surface of the filter plate 22. The cleaning scraper 24 cleans the filter plate 22 to prevent dust from clogging the filter holes on the filter plate 22. When the cleaning scraper 24 needs to be installed, the clamping sleeve 26 is clamped on the side of the clamping block 25, and the limiting nut 28 is threadedly connected to the side of the first threaded column 27. The limiting nut 28 is tightened to limit the position of the clamping sleeve 26, which is convenient for the installation of the cleaning scraper 24 or the later replacement of the cleaning scraper 24.

[0052] As a technical optimization solution of the present invention, an elastic support sheet 29 is provided between the opposite sides of the two snap-in protrusions 7. The elastic support sheet 29 is elastic. Both ends of the elastic support sheet 29 are fixedly connected with plug-in blocks 30. The opposite sides of the two snap-in protrusions 7 are provided with plug-in grooves 31 adapted to the plug-in blocks 30.

[0053] Specifically, when the elastic force of the connecting pin 4 is weak, the elastic force at both ends of the connecting pin 4 can be increased by adding an elastic support sheet 29, and the plug-in blocks 30 at both ends of the elastic support sheet 29 can be plugged into the plug-in groove 31 to complete the installation of the elastic support sheet 29, thereby improving the stability of the power module body 1 after the snap-in protrusion 7 is snapped into the snap-in platform 6. In addition, it is also more convenient when the elastic support sheet 29 does not need to be used or needs to be replaced.

[0054] As a technical optimization scheme of the present invention, a second threaded column 32 is fixedly connected to the upper part of the connecting pin 4, a first mounting hole 33 adapted to the second threaded column 32 is opened on the lower surface of the power module body 1, a third threaded column 34 is fixedly connected to the lower part of the pin connecting seat 3, a second mounting hole 35 adapted to the third threaded column 34 is opened on the upper surface of the circuit board 2, and a mounting plate 36 for connecting the circuit board 2 is fixedly connected to multiple sides of the protective cover 9.

[0055] Specifically, the connecting pin 4 is threadedly connected to the first mounting hole 33 through the second threaded column 32 for installation. The connecting pin 4 is reusable and can be replaced after being damaged. The pin connecting seat 3 is threadedly connected to the second mounting hole 35 through the third threaded column 34. When the circuit board 2 is produced, only several second mounting holes 35 need to be opened. The pin connecting seat 3 is reusable and can be replaced individually after a pin connecting seat 3 is damaged. The mounting plate 36 is used to install the protective cover 9.

[0056] Embodiment 2

[0057] A multi-power module packaging method includes the multi-power module assembly described in Embodiment 1, and the method includes the following steps:

[0058] S1: Installing a plurality of pin connection seats 3 on the circuit board 2 by threading the third threaded column 34 with the second mounting hole 35;

[0059] S2: Select an appropriate elastic support sheet 29 and install the elastic support sheet 29 by inserting the insertion block 30 into the insertion slot 31;

[0060] S3: Installing a plurality of connecting pins 4 on the lower surface of the power module body 1 by threading the second threaded column 32 with the first mounting hole 33;

[0061] S4: the clamping protrusion 7 is aligned with the connecting groove 5, and the connecting pin 4 is inserted into the connecting groove 5 through the guidance of the guide angle 8, and the clamping protrusion 7 is clamped at the position of the clamping platform 6;

[0062] S5: Install the drive motor 19 on the mounting frame 18, install the filter plate 22 on the air suction cover 16, and sleeve the clamping sleeve 26 on the side of the clamping block 25, and limit and fix the clamping sleeve 26 by the limiting nut 28;

[0063] S6: The protective cover 9 is installed on the circuit board 2 through the cooperation of the mounting plate 36 and the fasteners to protect the plurality of power module bodies 1 .

[0064] Among them, the above-mentioned drive motor 19, power module body 1 and circuit board 2 can all be purchased on the market. They are mature technologies and have been fully disclosed, so they are not repeated in the specification. The drive motor 19 is equipped with a power connection line, and it is electrically connected to the external main controller and 220V phase voltage (or chemical power source) through the power line, and the main controller can be a conventional known device such as a computer that plays a control role.

[0065] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0066] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-power module assembly, comprising a plurality of power module bodies (1), characterized in that: The invention also comprises a circuit board (2) for mounting a plurality of power module bodies (1), wherein the upper surface of the circuit board (2) is provided with a plurality of pin connection seats (3) adapted to the power module bodies (1), and the lower surface of each of the power module bodies (1) is provided with a plurality of inverted U-shaped connection pins (4), and the upper side surface of each of the pin connection seats (3) is provided with a connection groove (5) adapted to the connection pin (4), and the inner side wall of the connection groove (5) is provided with a clamping platform (6), and both ends of the connection pin (4) are A clamping protrusion (7) adapted to the clamping platform (6) is fixedly connected, a guide angle (8) adapted to the clamping platform (6) is provided on the side of the clamping protrusion (7), and each adjacent side of the connecting pin (4) is provided with a limit release unit for releasing the clamping state between the clamping protrusion (7) and the clamping platform (6), and a protective cover (9) for protecting a plurality of power module bodies (1) is provided on the circuit board (2), and a heat dissipation unit for dissipating heat from the plurality of power module bodies (1) is provided on the protective cover (9).

2. A multi-power module assembly according to claim 1, characterized in that: The limit release unit comprises a push plate (13) movably connected in the pin connection seat (3); adjacent sides of the pin connection seat (3) are provided with connecting grooves (10) connected with the connecting groove (5); a fixing plate (11) is fixedly connected in the connecting groove (10); a moving column (12) having one end fixedly connected to one side of the push plate (13) passes through the fixing plate (11); a pressing plate (14) is fixedly connected to the end of the moving column (12) away from the pushing plate (13); a spring (15) sleeved on the side of the moving column (12) is fixedly connected between the pressing plate (14) and the fixing plate (11).

3. A multi-power module assembly according to claim 1, characterized in that: The heat dissipation unit comprises an air suction hood (16) fixedly connected to the upper part of the protective hood (9); an air inlet (17) adapted to the air suction hood (16) is provided on the upper part of the protective hood (9); a mounting frame (18) is fixedly connected to the inner wall of the air inlet (17); a driving motor (19) is fixedly mounted on the upper part of the mounting frame (18); a rotating shaft (20) is fixedly mounted on the output end of the driving motor (19); a plurality of fan blades (21) are fixedly mounted on the side of the rotating shaft (20); a filter plate (22) with filter holes is fixedly mounted on one end of the air suction hood (16) away from the protective hood (9); and ventilation grooves (23) are penetrated through multiple side surfaces of the protective hood (9).

4. A multi-power module assembly according to claim 3, characterized in that: One end of the rotating shaft (20) passes through the filter plate (22) and is fixedly connected to a clamping block (25) at its end. A clamping sleeve (26) is sleeved on the side of the clamping block (25). A cleaning scraper (24) whose side is in contact with the filter plate (22) is fixedly connected to the side of the clamping sleeve (26). One end of the clamping block (25) away from the rotating shaft (20) is fixedly connected to a first threaded column (27). A side of the first threaded column (27) is threadedly connected to a limiting nut (28).

5. The multi-power module assembly according to claim 1, characterized in that: An elastic support sheet (29) is provided between the opposite sides of the two clamping protrusions (7), and the elastic support sheet (29) is elastic.

6. A multi-power module assembly according to claim 5, characterized in that: Both ends of the elastic support sheet (29) are fixedly connected with plug-in blocks (30), and the two facing sides of the two clamping protrusions (7) are provided with plug-in grooves (31) adapted to the plug-in blocks (30).

7. The multi-power module assembly according to claim 1, characterized in that: A second threaded column (32) is fixedly connected to the upper portion of the connecting pin (4), and a first mounting hole (33) adapted to the second threaded column (32) is provided on the lower surface of the power module body (1).

8. The multi-power module assembly according to claim 1, characterized in that: A third threaded column (34) is fixedly connected to the lower portion of the pin connection seat (3), and a second mounting hole (35) adapted to the third threaded column (34) is provided on the upper surface of the circuit board (2).

9. The multi-power module assembly according to claim 1, characterized in that: Multiple side surfaces of the protective cover (9) are fixedly connected with mounting plates (36) for connecting to the circuit board (2).

10. A multi-power module packaging method, characterized in that: The method comprises the following steps: S1: A plurality of pin connection seats (3) are mounted on a circuit board (2) by threading a third threaded column (34) with a second mounting hole (35); S2: Selecting an appropriate elastic support sheet (29), and installing the elastic support sheet (29) by inserting the inserting block (30) into the inserting slot (31); S3: installing a plurality of connection pins (4) on the lower surface of the power module body (1) by threading the second threaded column (32) with the first mounting hole (33); S4: the clamping protrusion (7) is aligned with the connecting groove (5), and the connecting pin (4) is inserted into the connecting groove (5) by the guidance of the guide angle (8), and the clamping protrusion (7) is clamped in the position of the clamping platform (6); S5: The driving motor (19) is mounted on the mounting frame (18), the filter plate (22) is mounted on the air suction cover (16), and is sleeved on the side of the clamping block (25) through the clamping sleeve (26), and the clamping sleeve (26) is limited and fixed by the limiting nut (28); S6: The protective cover (9) is mounted on the circuit board (2) through the cooperation of the mounting plate (36) and the fasteners to protect the plurality of power module bodies (1).

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