Vacuum potting and bubble removal apparatus and method for power modules

Abstract

The present application relates to the technical field of power module, specifically to a vacuum potting and bubble removal device and method for power module, which comprises a containing barrel, a stirring assembly, an output pipe, a storage frame, a mounting frame, a quantitative assembly, a working frame, a vacuum assembly, a fixing assembly, a bottom feeding assembly, and an elastic clamping and stable fixing power module, a deflector and an inclined surface are designed to buffer the impact of glue flow, to avoid damage to chips, substrates and bonding wires, to stir and pre-debubble, and to control glue with a quantitative pump, so that the glue solution is uniform and the glue filling amount is accurate, to ensure the consistency of glue filling thickness, to adapt to different specifications of power module, to fill the column through gear and rack linkage, to automatically block the shunt hole after potting, to prevent glue solution from backflowing and blocking, to avoid frequent disassembly and cleaning, to make continuous operation more stable, to integrate the functions of stirring, vacuum, quantitative, potting, bubble removal, anti-blocking and residual glue collection, to make the process coherent and highly automated, and to significantly improve the potting efficiency and yield, to prolong the service life and operation reliability of the power module.

Description

Technical Field

[0001] This invention relates to the field of power module technology, specifically to a vacuum potting and bubble removal device and method for power modules. Background Technology

[0002] As is well known, vacuum potting of power modules is a core process for improving their insulation protection, heat dissipation efficiency and structural stability. The bubble content, potting uniformity and chip protection during the potting process directly determine the service life and operational reliability of the power module.

[0003] Traditional potting devices often employ a top-center dispensing method. Excessive dispensing speed can create turbulence, trapping large amounts of air within the adhesive. Simultaneously, the fountain effect can carry air deep into the module. For large power modules, a single dispensing operation results in an excessively thick adhesive layer, and the upward path of air bubbles is too long to be quickly expelled in a vacuum environment. Some attempts at bottom dispensing lack corresponding flow control and metered dispensing designs. The adhesive flow directly impacts the chip, substrate, and bonding wires at the bottom of the module, easily causing component damage. Furthermore, existing devices fail to address bottom loading, vacuum extraction, module fixation, metered dispensing, air bubble removal, and other preventative measures. The integrated approach to sealing and cleaning results in air bubbles remaining on top of the adhesive layer after potting, which cannot be effectively removed. The adhesive diversion structure is easily clogged by residual adhesive, and there is a lack of residual adhesive collection and diversion cleaning structures. This leads to a high potting defect rate, cumbersome equipment maintenance, and poor stability in continuous operation. Ultimately, the existing technology does not systematically design for the needs of power module potting in terms of air bubble suppression, chip protection, efficient defoaming, and anti-clogging durability. The vacuum potting and air bubble removal functions are disconnected, making it impossible to balance potting quality, component protection, and long-term equipment operation. As a result, it is always difficult to meet the high-precision and high-reliability vacuum potting production requirements of power modules.

[0004] Therefore, there is a need for a vacuum potting and bubble removal device and method for power modules. Summary of the Invention

[0005] Technical problems to be solved To overcome the problem that existing vacuum potting and bubble removal devices and methods for power modules mostly adopt a top-center injection mode and lack supporting flow control and quantitative control designs, this invention provides a vacuum potting and bubble removal device and method for power modules.

[0006] Technical solution To achieve the above objectives, the present invention provides the following technical solution: a vacuum potting and bubble removal device for a power module, comprising: Container; A stirring assembly is installed inside the container. An output pipe is fixedly installed on both sides of the bottom of the container, and one end of the output pipe is connected to the container. A storage frame is fixedly installed at the bottom of the container, and the other end of the output pipe is connected to the storage frame; The mounting frame is fixedly installed at the bottom of the storage frame; A quantitative component is installed within the mounting frame, and the mounting frame and the storage frame communicate through the quantitative component. The work frame is fixedly mounted on the side of the mounting frame by fixing posts; A vacuum assembly, which is mounted on the side of the work frame; A fixing component, the fixing component being installed within the work frame; and A bottom feeding assembly is installed at the bottom of the working frame. The bottom feeding assembly includes a connecting pipe. One end of the connecting pipe is fixedly disposed at the bottom of the quantitative component, and the other end of the connecting pipe is fixedly disposed at the working frame. A support pipe is fixedly disposed at the bottom center of the working frame, and a feeding pipe is fixedly disposed inside the support pipe. The bottom of the feeding pipe is fixedly disposed at the top of the connecting pipe.

[0007] Preferably, an installation ring is fixedly provided on the top of the feeding pipe, and a flow divider plate is fixedly provided on the installation ring, with a plurality of flow divider holes opened on the flow divider plate.

[0008] Furthermore, a one-way valve is fixedly installed inside the feeding pipe, and a spring baffle is slidably installed on the one-way valve. First grooves are formed on both sides of the top of the feeding pipe, and first sliders are slidably installed within the first grooves. A sliding plate is fixedly installed between the first sliders, and a filling column is fixedly installed on the top of the sliding plate. The number of filling columns is the same as the number of diversion holes, and the filling columns are adapted to the diversion holes. Second grooves are formed on both sides of the bottom of the feeding pipe, and second sliders are slidably installed within the second grooves. The second sliders are fixedly installed with the spring baffle. Stops are slidably installed in both the first and second grooves, and the stops are fixedly installed with the corresponding first and second sliders. A gear is rotatably installed in the first groove. Connecting grooves are formed on both sides of the feeding pipe, and the connecting grooves communicate with the first and second grooves. A rack is fixedly installed on the side of both the second and first sliders, and the rack is slidably installed with the connecting groove, meshing with the gear.

[0009] Furthermore, the stirring assembly includes a stirring shaft rotatably disposed inside the container, a stirring rod fixedly disposed on the stirring shaft, the stirring rod being in contact with the inner wall of the container, a protective frame fixedly disposed on the top of the container, a first motor fixedly disposed inside the protective frame, and the output shaft of the first motor being connected to the top of the stirring shaft by a key.

[0010] In a further embodiment, the metering component includes a metering pump, which is fixedly installed within the mounting frame. A first clamp is fixedly installed on the top of the metering pump and is detachably connected to the bottom of the storage frame. A second clamp is fixedly installed on the side of the metering pump and is detachably connected to the connecting pipe.

[0011] Based on the aforementioned solution, the vacuum assembly includes support legs, which are fixedly arranged around the bottom of the storage frame. A mounting bracket is fixedly arranged on the side of the support legs, and a vacuum pump is fixedly arranged on the mounting bracket. The top of the vacuum pump is connected to the working frame through an air extraction pipe.

[0012] Furthermore, based on the aforementioned solution, the fixing component includes a mounting platform, which is fixedly disposed on the top of the support tube and communicates with the support tube. A square frame is fixedly disposed on the top of the mounting platform, and at least four connecting brackets are fixedly disposed at the center of the mounting platform. A support platform is fixedly disposed between the connecting brackets, and the support platform is located directly above the support tube and within the square frame. The bottom of both the support platform and the connecting brackets has an inclined surface. A slide rail is fixedly disposed on one side of the mounting platform, and a sliding rail is fixedly disposed on the side of the working frame. A second hydraulic rod is provided, and a movable rod is fixedly mounted on the output shaft of the second hydraulic rod. The movable rod is slidably mounted with the slide rail. A push plate is fixedly mounted on the top of the movable rod, and the push plate is adapted to the top of the square frame. An inclined plate is fixedly mounted on the other side of the mounting platform. A bearing frame is slidably mounted on the bottom of the working frame, and the bearing frame is located directly below the inclined plate. Sleeves are fixedly mounted on both sides of the square frame. A top rod is slidably mounted inside the sleeve. One end of a plurality of springs is fixedly mounted inside the sleeve, and the other end of the springs is fixedly mounted to the bottom of the top rod.

[0013] Furthermore, based on the aforementioned solution, a first hydraulic rod is fixedly installed on the top inner side of the storage frame, and a sealing plate is fixedly installed on the top of the first hydraulic rod. The sealing plate is in contact with the inner wall of the storage frame and covers one end of the output pipe.

[0014] Furthermore, based on the aforementioned solution, a sealing door is slidably provided on the side of the work frame, a self-locking device is installed on the side of the sealing door, and a handle is fixedly provided on the side of the sealing door.

[0015] A method for vacuum potting and bubble removal of a power module includes the following steps: S1: First, put the potting compound into the container, then start the mixing unit to mix the potting compound and initially remove air bubbles; S2: Place the power module on the support platform, while the sleeve rod and spring hold the power module in place on both sides. S3: Then the processed potting compound is transported to the storage box through the output pipe, the potting compound is fed into the work box through the metering component, and the vacuum component is activated to perform vacuum treatment on the work box; S4: After the potting compound enters the feeding pipe through the connecting pipe, it is delivered to the box through the diversion hole by the one-way valve to perform staged and layered potting treatment on the power module. S5: Reduce the coverage of air bubbles by bottom injection. After the injection is completed, activate the second hydraulic rod. The second hydraulic rod drives the push plate to push out the air bubbles at the top, so that they fall into the bearing frame below along the inclined plate. S6: After the potting is completed, the spring baffle moves downward, which drives the second slider to move. The movement of the second slider drives the rack to move, which in turn drives the first slider to move. The movement of the first slider drives the sliding plate to move. The movement of the sliding plate drives the filler column to slide into the diversion hole to prevent the potting adhesive from backflowing and clogging the diversion hole. S7: After the potting is complete, open the self-locking device, pull the handle to open the sealed door, and take out the potted power module.

[0016] Beneficial effects The vacuum potting and bubble removal device and method for this power module solves the core problems of traditional power module potting, such as the tendency for air to be trapped when using top-filling, the risk of damage to components due to the lack of a flow divider and slow flow design, the inability to quickly remove bubbles, the high potting defect rate, the easy clogging of equipment, cumbersome maintenance, and the disconnect between functions.

[0017] 1. Bottom-diverting slow-flow potting combined with a vacuum environment reduces bubble generation at the source. Layered potting helps bubbles rise quickly, and the push plate automatically scrapes and collects the top bubbles, significantly reducing the bubble residue rate.

[0018] 2. The flexible clamp securely holds the power module in place, and the shunt plate and inclined flow guide design buffer the impact of adhesive flow, preventing damage to the chip, substrate, and bonding wires.

[0019] 3. Stirring and pre-degassing, and metered pump control ensure uniform glue solution and precise glue volume, guaranteeing consistent glue thickness and adaptability to different power modules.

[0020] 4. The gear and rack linkage filling column automatically seals the diversion hole after potting, preventing backflow and blockage of the glue, eliminating the need for frequent disassembly and cleaning, and making continuous operation more stable.

[0021] 5. It integrates functions such as stirring, vacuuming, metering, filling, defoaming, anti-clogging, and residual glue collection. The process is continuous and highly automated, which significantly improves filling efficiency and yield, and extends the service life and operational reliability of the power module. Attached Figure Description

[0022] Figure 1 This is a side view of the structure of the present invention; Figure 2 This is a schematic diagram of the structure on the other side of the present invention; Figure 3 This is a schematic diagram of the structure of the stirring assembly of the present invention; Figure 4 This is a schematic diagram of the structure of the first hydraulic rod of the present invention; Figure 5 This is a schematic diagram of the structure of the quantitative component of the present invention; Figure 6 This is a schematic diagram of the structure of the vacuum assembly of the present invention; Figure 7 This is a schematic diagram of the structure of the sealing door of the present invention; Figure 8 This is a schematic diagram of the support tube structure of the present invention; Figure 9 This is a schematic diagram of the push plate of the present invention; Figure 10 This is a schematic diagram of the structure of the fixing component of the present invention; Figure 11 This is a schematic diagram of the structure of the sleeve of the present invention; Figure 12 This is a schematic diagram of the bottom feeding assembly of the present invention; Figure 13 This is a schematic diagram of the structure of the sliding plate of the present invention; Figure 14 This is a schematic diagram of the structure of the stop block of the present invention; Figure 15 For the present invention Figure 14 A magnified schematic diagram of the partial structure at point A in the middle; Figure 16 This is a schematic diagram of the one-way valve of the present invention.

[0023] In the diagram: 1. Holding tank; 2. Stirring assembly; 3. Output pipe; 4. Storage frame; 5. Mounting frame; 6. Metering assembly; 7. Working frame; 8. Vacuum assembly; 9. Fixing assembly; 10. Bottom feeding assembly; 11. Connecting pipe; 12. Support pipe; 13. Feeding pipe; 14. Mounting ring; 15. Diverter plate; 16. Diverter orifice; 17. One-way valve; 18. Spring baffle; 19. First chute; 20. First slider; 21. Sliding plate; 22. Filling column; 23. Second chute; 24. Second slider; 25. Stop; 26. Gear; 27. Connecting groove; 28. Rack; 29. ​​Stirring. 30. Shaft; 31. Stirring rod; 32. Protective frame; 33. First motor; 34. Metering pump; 35. First clamp; 36. Second clamp; 37. Support leg; 38. Mounting bracket; 39. Vacuum pump; 40. Evacuation pipe; 41. Mounting platform; 42. Square frame; 43. Connecting frame; 44. Bearing platform; 45. Inclined surface; 46. Slide rail; 47. Second hydraulic rod; 48. Moving rod; 49. Push plate; 50. Inclined plate; 51. Bearing frame; 52. Sleeve; 53. Top rod; 54. Spring; 55. First hydraulic rod; 56. Sealing plate; 57. Sealing door; 58. Self-locking device; 59. Handle. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] See Figures 1-16 A vacuum filling and bubble removal device and method for a power module includes a holding tank 1, a stirring assembly 2 installed inside the holding tank 1, output pipes 3 fixedly installed on both sides of the bottom of the holding tank 1, one end of the output pipes 3 communicating with the inside of the holding tank 1, a storage frame 4 fixedly installed at the bottom of the holding tank 1, the other end of the output pipes 3 communicating with the inside of the storage frame 4, an installation frame 5 fixedly installed at the bottom of the storage frame 4, a metering assembly 6 installed inside the installation frame 5, the inside of the installation frame 5 and the inside of the storage frame 4 communicating through the metering assembly 6, a working frame 7 fixedly installed on the side of the installation frame 5 through a fixing column, a vacuum assembly 8 installed on the side of the working frame 7, a fixing assembly 9 installed inside the working frame 7, and a bottom feeding assembly 10 installed at the bottom of the working frame 7.

[0026] The purpose of container 1 is to hold the potting compound required for the potting operation, providing a closed working space for the mixing and pretreatment of the potting compound, preventing external dust, debris, and moisture from falling into the potting compound and affecting its purity and potting quality. At the same time, it prevents the potting compound from directly contacting the air and causing it to evaporate and harden, thus reducing material loss.

[0027] The function of the stirring component 2 is to continuously and evenly stir the potting compound inside the container 1, break up the air bubbles trapped inside the potting compound, complete the initial degassing treatment of the potting compound, and at the same time, ensure that the various components inside the potting compound are mixed evenly, so as to avoid the problems of component stratification and uneven texture of the potting compound, and ensure the stability of the performance of the glue layer after potting.

[0028] The function of the output pipe 3 is to connect the holding tank 1 and the storage frame 4, so as to smoothly and steadily transport the potting adhesive that has been pre-treated by stirring in the holding tank 1 to the storage frame 4, realize the transfer and storage of the potting adhesive, and ensure that the potting process can be carried out continuously and without interruption, without interruption or insufficient supply of adhesive.

[0029] The purpose of storage box 4 is to temporarily store the pre-treated potting compound, balance the operation rhythm of the mixing pre-treatment process and the vacuum potting process, and provide a stable and continuous supply of adhesive for subsequent quantitative potting operations, so as to avoid problems such as glue interruption and glue supply fluctuation during the potting process.

[0030] The purpose of the mounting frame 5 is to provide a closed and stable installation space for the metering component 6, protect the metering component 6 from external dust, moisture, and residual adhesive contamination and influence, and at the same time prevent the potting compound from leaking and contaminating other internal structures of the equipment, ensuring that the metering component 6 can operate stably.

[0031] The function of the metering component 6 is to precisely control the output flow rate, output speed and output total amount of potting compound. According to the potting process requirements of different power modules, it realizes the staged and layered glue supply operation, ensuring that the glue volume is accurate and controllable, avoiding the waste of raw materials due to excessive glue filling, and avoiding the situation where insufficient glue filling affects the potting quality.

[0032] The function of the work frame 7 is to provide a fully enclosed working space for the vacuum potting operation of the power module, ensuring the environmental sealing during the vacuum potting process, preventing outside air from entering the interior of the work frame 7, which would cause the potting compound to trap air and generate bubbles, thus providing the basic sealed environment conditions for the vacuum potting process.

[0033] The function of the vacuum component 8 is to quickly extract the air inside the working frame 7, creating a high-vacuum potting environment inside the working frame 7, suppressing the formation of air bubbles inside the potting compound from the source, and at the same time assisting the rapid rise and discharge of trace air bubbles inside the potting compound, further improving the defoaming effect during the potting process.

[0034] The function of the fixing component 9 is to stably and firmly fix the power module to be potted inside the working frame 7, preventing the power module from shaking, shifting, or tipping over during the potting process, ensuring accurate potting position, and can adapt to the clamping requirements of power modules of different sizes and specifications without frequent tooling changes.

[0035] The bottom feeding component 10 delivers potting compound from the bottom of the power module upwards. By using the bottom feeding method, the probability of air being trapped in the potting compound is fundamentally reduced. Combined with the flow distribution structure, it achieves slow-flow potting, preventing the potting compound from directly impacting the precision components such as chips, substrates, and bonding wires inside the power module, thus preventing damage or detachment of the components.

[0036] The bottom feeding component 10 includes a connecting pipe 11. One end of the connecting pipe 11 is fixedly installed at the bottom of the quantitative component 6, and the other end of the connecting pipe 11 is fixedly installed at the bottom of the working frame 7. A support pipe 12 is fixedly installed at the center of the bottom of the working frame 7. A feeding pipe 13 is fixedly installed inside the support pipe 12. The bottom of the feeding pipe 13 is fixedly installed at the top of the connecting pipe 11.

[0037] The function of the connecting pipe 11 is to smoothly and leak-free deliver the potting compound output by the metering component 6 into the feed pipe 13, thereby achieving directional delivery of the potting compound and ensuring that there is no stagnation, blockage, or leakage during the delivery of the potting compound.

[0038] The function of the support pipe 12 is to provide fixed support and external protection for the feeding pipe 13, to prevent the feeding pipe 13 from being deformed or damaged by external pressure, to ensure the structural stability and smooth conveying of the feeding pipe 13, and at the same time to provide bottom support for the fixed component 9 above.

[0039] The function of the feeding pipe 13 is to serve as a dedicated conveying channel for potting compound, accurately and stably conveying the potting compound to the bottom position of the power module, realizing the core function of bottom feeding and potting, and ensuring that the potting compound can be evenly filled from the bottom of the module upwards.

[0040] A mounting ring 14 is fixedly installed at the top of the feeding pipe 13, and a flow divider 15 is fixedly installed on the upper surface of the mounting ring 14. A plurality of flow divider holes 16 are evenly opened on the flow divider 15.

[0041] The function of the mounting ring 14 is to provide a stable mounting carrier for the diverter plate 15, ensuring that the diverter plate 15 is firmly connected to the top of the feed pipe 13 and that there will be no loosening, falling off, or displacement. At the same time, it ensures the sealing between the diverter plate 15 and the feed pipe 13 to prevent the potting compound from leaking from the connection.

[0042] The function of the flow divider plate 15 is to evenly disperse the concentrated glue flow in the feed pipe 13, allowing the potting glue to flow out slowly and evenly through the flow divider hole 16, thereby achieving slow flow and diversion potting and avoiding concentrated impact of the potting glue on the power module, which could damage the precision components inside the module.

[0043] The function of the flow divider 16 is to split the single concentrated adhesive flow into multiple fine adhesive flows, further reducing the flow rate of the potting compound, reducing the probability of air bubble formation from the source, and allowing the potting compound to be evenly filled into various parts of the power module, ensuring the uniformity of the potting compound layer.

[0044] A one-way valve 17 is fixedly installed inside the feeding pipe 13. A spring baffle 18 is slidably installed on the upper part of the one-way valve 17. First grooves 19 are opened on both sides of the top of the feeding pipe 13. First sliders 20 are slidably installed inside the first grooves 19. A sliding plate 21 is fixedly installed between the two first sliders 20. A filling column 22 is fixedly installed on the top of the sliding plate 21. The number of filling columns 22 is exactly the same as the number of diversion holes 16. The size of the filling columns 22 is adapted to the size of the diversion holes 16. Second grooves 23 are opened on both sides of the bottom of the feeding pipe 13. Second sliders are slidably installed inside the second grooves 23. 24. The second slider 24 is fixedly disposed on the side of the spring baffle 18. The first slide groove 19 and the second slide groove 23 are both slidably disposed with a stop block 25. The stop block 25 is fixedly disposed on the side of the corresponding first slider 20 and the second slider 24. The first slide groove 19 is rotatably disposed with a gear 26. The feeding pipe 13 is provided with a connecting groove 27 on both sides. The connecting groove 27 communicates with the interior of the first slide groove 19 and the second slide groove 23. The second slider 24 and the first slider 20 are both fixedly disposed with a rack 28. The rack 28 is slidably disposed inside the connecting groove 27. The rack 28 and the gear 26 mesh with each other.

[0045] The function of the one-way valve 17 is to prevent backflow of potting compound, ensuring that the potting compound can only flow upward in one direction, and preventing backflow of potting compound from contaminating the metering unit 6 or blocking the delivery channel.

[0046] The function of the spring baffle 18 is to work with the one-way valve 17 to control the flow of potting compound. When potting, the potting compound pushes the spring baffle 18 upward to complete the delivery. After potting stops, the spring baffle 18 automatically resets to close the channel. At the same time, as a transmission component, it drives the subsequent linkage structure to complete the anti-blocking action.

[0047] The function of the first groove 19 is to provide a directional sliding path for the first slider 20, ensuring that the first slider 20 can slide up and down smoothly and without deviation, thereby ensuring that the sliding plate 21 moves smoothly and will not deviate or get stuck.

[0048] The function of the first slider 20 is to drive the sliding plate 21 to move up and down, so as to stably transmit the transmission power of the gear 26 and the rack 28 to the sliding plate 21 and ensure that the sliding plate 21 can move up and down synchronously.

[0049] The function of the sliding plate 21 is to support and fix the filling column 22, and drive the filling column 22 to move up and down synchronously to complete the blocking and opening action of the diversion hole 16.

[0050] The function of the filling column 22 is to slide upward and insert into the interior of the diversion hole 16 after the potting operation is completed, completely sealing the channel of the diversion hole 16, preventing the residual potting glue from flowing back and solidifying and blocking the diversion hole 16, ensuring that subsequent potting operations can be carried out normally without frequent disassembly and cleaning.

[0051] The function of the second slide groove 23 is to provide sliding space for the second slider 24, ensuring that the second slider 24 can move up and down synchronously with the spring baffle 18 without any obstruction or jamming.

[0052] The function of the stop block 25 is to limit the sliding stroke of the first slider 20 and the second slider 24, prevent the slider from sliding excessively and disengaging from the corresponding groove, and ensure the stability and reliability of the entire transmission structure.

[0053] The function of gear 26 is to mesh with the racks 28 on the upper and lower sides, so as to transmit the up and down movement power of the second slider 24 to the first slider 20 synchronously and in the opposite direction, so as to realize the linkage operation of the spring baffle 18 and the filling column 22 without the need for additional power drive.

[0054] The function of the connecting groove 27 is to provide sliding space for the rack 28, ensuring that the rack 28 can slide smoothly up and down, and at the same time ensuring that the rack 28 and the gear 26 can mesh stably without tooth slippage or jamming.

[0055] The rack 28 is used to transmit power and achieve synchronous linkage between the spring baffle 18 and the filling column 22. After the glue dispensing stops, the spring baffle 18 moves down and automatically drives the filling column 22 to move up to block the diversion hole 16, thus completing the automatic anti-blocking operation without manual intervention.

[0056] The stirring assembly 2 includes a stirring shaft 29, which is rotatably positioned at the center of the container 1. Several stirring rods 30 are fixedly mounted on the outer surface of the stirring shaft 29, and the ends of the stirring rods 30 are in contact with the inner wall of the container 1. A protective frame 31 is fixedly mounted on the top of the container 1, and a first motor 32 is fixedly mounted inside the protective frame 31. The output shaft of the first motor 32 is connected to the top of the stirring shaft 29 by a key.

[0057] The function of the stirring shaft 29 is to transmit the rotational power of the first motor 32, drive the stirring rod 30 to rotate synchronously and at a uniform speed, and ensure uniform stirring force and comprehensive stirring range.

[0058] The function of the stirring rod 30 is to stir the potting compound in the container 1 in an all-round and thorough manner. The stirring rod 30 is set to fit the inner wall of the container 1, which can prevent the potting compound from remaining on the container wall. At the same time, it can fully disperse the air bubbles trapped inside the potting compound, complete the initial degassing treatment of the potting compound, and make the potting compound more evenly mixed.

[0059] The protective frame 31 provides a fully enclosed protection for the first motor 32, preventing dust and potting compound from splashing into the motor and causing damage, short circuits, or malfunctions, thus extending the motor's service life.

[0060] The function of the first motor 32 is to provide stable rotational power for the mixing component 2, ensure mixing efficiency and uniformity, meet the pretreatment process requirements of potting compound, and adjust the speed according to the viscosity of the potting compound to adapt to the mixing needs of different types of potting compound.

[0061] The metering component 6 includes a metering pump 33, which is fixedly installed inside the mounting frame 5. A first clamp 34 is fixedly installed on the top of the metering pump 33 and is detachably installed on the bottom of the storage frame 4. A second clamp 35 is fixedly installed on the side of the metering pump 33 and is detachably installed on the connecting pipe 11.

[0062] The function of the metering pump 33 is to precisely control the output volume and speed of the potting compound, and to achieve phased metering of the compound according to the potting process requirements. It adapts to the potting needs of power modules with different thicknesses and specifications, and ensures the accuracy and consistency of each potting.

[0063] The function of the first clamp 34 is to quickly and detachably connect the feed end of the metering pump 33 to the bottom of the storage frame 4, ensuring the connection is sealed, and at the same time facilitating the disassembly, maintenance and cleaning of the metering pump 33 in the later stage, making the operation simple and convenient.

[0064] The function of the second clamp 35 is to seal the discharge end of the metering pump 33 to the connecting pipe 11, ensuring that there is no leakage or air intake during the delivery of the potting compound, thereby improving the stability and consistency of the potting process.

[0065] The vacuum assembly 8 includes a support leg 36, which is fixedly installed around the bottom of the storage frame 4. A mounting bracket 37 is fixedly installed on the side of the support leg 36, and a vacuum pump 38 is fixedly installed on the mounting bracket 37. The top of the vacuum pump 38 is connected to the interior of the working frame 7 through a suction pipe 39.

[0066] The function of the support leg 36 is to provide uniform and stable support for the entire device, improve the stability of the device placement, and prevent shaking, displacement, or tipping during equipment operation. At the same time, it raises the overall height of the device, reserving space for the installation and operation of the bottom components.

[0067] The function of mounting bracket 37 is to provide a stable mounting platform for vacuum pump 38, ensuring that vacuum pump 38 operates without vibration or displacement, reducing the impact of vibration generated by vacuum pump 38 on potting accuracy, and extending the service life of vacuum pump 38.

[0068] The function of vacuum pump 38 is to quickly extract air from inside the working frame 7, so that the inside of the working frame 7 can reach the vacuum level required by the process in a short time, and provide a stable environment for vacuum potting operation.

[0069] The function of the evacuation pipe 39 is to connect the vacuum pump 38 and the working frame 7 to ensure that the vacuum extraction process is smooth, without leakage or blockage, and to maintain a stable vacuum level inside the working frame 7, so that there will be no vacuum fluctuation.

[0070] The fixing component 9 includes a mounting platform 40, which is fixedly mounted on the top of the support tube 12. The interior of the mounting platform 40 communicates with the interior of the support tube 12. A square frame 41 is fixedly mounted on the top of the mounting platform 40. At least four connecting brackets 42 are fixedly mounted at the center of the top of the mounting platform 40. A support platform 43 is fixedly mounted between the connecting brackets 42. The support platform 43 is located directly above the support tube 12 and inside the square frame 41. The bottom of both the support platform 43 and the connecting brackets 42 has an inclined surface 44. A slide rail 45 is fixedly mounted on one side of the mounting platform 40. A second hydraulic rod is fixedly mounted on the side of the working frame 7. 46. ​​A movable rod 47 is fixedly installed on the output shaft of the second hydraulic rod 46. The movable rod 47 is slidably installed with the slide rail 45. A push plate 48 is fixedly installed on the top of the movable rod 47. The push plate 48 is adapted to the top of the square frame 41. An inclined plate 49 is fixedly installed on the other side of the mounting platform 40. A bearing frame 50 is slidably installed at the bottom of the working frame 7. The bearing frame 50 is located directly below the inclined plate 49. Sleeves 51 are fixedly installed on both sides of the square frame 41. A top rod 52 is slidably installed inside the sleeve 51. One end of a plurality of springs 53 is fixedly installed inside the sleeve 51. The other end of the springs 53 is fixedly installed with the bottom of the top rod 52.

[0071] The function of mounting platform 40 is to provide a stable mounting base for all components of fixed assembly 9, ensuring that the overall structure is firmly connected and operates stably. At the same time, it connects support tube 12 and frame 41 to ensure that potting compound can be smoothly delivered to the bottom of the module.

[0072] The function of the box 41 is to enclose the potting area of ​​the power module, limit the flow range of the potting compound, prevent the potting compound from overflowing and causing material waste, and at the same time ensure that the potting area is regular and the potting compound thickness is uniform.

[0073] The function of the connecting bracket 42 is to fix the position of the support platform 43, ensuring that the support platform 43 is always directly above the support tube 12, so that the potting compound can be accurately delivered to the bottom of the power module, and at the same time provide stable support for the support platform 43.

[0074] The function of the support platform 43 is to support the power module to be potted, provide a flat and stable placement surface for the module, ensure that the module is placed horizontally, and avoid uneven thickness of the adhesive layer after potting.

[0075] The purpose of the inclined surface 44 is to guide the potting compound to flow smoothly and steadily, preventing the potting compound from stagnating at the bottom of the support platform 43 and the connecting frame 42, forming dead corners of air bubbles, and further improving the uniformity of potting and the defoaming effect.

[0076] The function of the slide rail 45 is to provide a directional sliding path for the moving rod 47, ensuring that the moving rod 47 drives the push plate 48 to move smoothly without deviation or jamming, thus ensuring the effective removal of air bubbles.

[0077] The function of the second hydraulic rod 46 is to provide stable power drive for the push plate 48, drive the push plate 48 to move horizontally back and forth, and complete the scraping action of the air bubbles on the top of the potting adhesive layer.

[0078] The function of the movable rod 47 is to connect the second hydraulic rod 46 and the push plate 48, stably transmit power, ensure that the push plate 48 runs smoothly and is subjected to uniform force, and prevents it from tilting.

[0079] The function of the push plate 48 is to smoothly scrape away the air bubbles on the top of the potting compound layer, and push the air bubbles and residual glue on the surface to the position of the inclined plate 49 to complete the cleaning and collection of air bubbles.

[0080] The function of the inclined plate 49 is to guide the air bubbles and residual glue to slide down smoothly, to prevent the residual glue from remaining inside the working frame 7 and causing pollution, and at the same time to allow the residual glue to flow smoothly into the carrying frame 50.

[0081] The function of the support frame 50 is to collect the residual glue and excess potting glue after the air bubbles burst, so as to achieve centralized storage of residual glue, facilitate unified cleaning later, and keep the inside of the work frame 7 clean.

[0082] The function of sleeve 51 is to provide sliding space for push rod 52, limit the direction of movement of push rod 52, and ensure that push rod 52 can slide smoothly horizontally without deviation.

[0083] The function of the push rod 52 is to clamp the power module from both sides under the pushing force of the spring 53, so as to ensure that the module is firmly fixed and will not shake or shift during the potting process.

[0084] The function of spring 53 is to provide continuous elastic thrust to push rod 52, so as to achieve adaptive clamping of power module without manual adjustment of clamping distance, and adapt to the clamping requirements of power module with different width and size.

[0085] A first hydraulic rod 54 is fixedly installed on the top inner side of the storage frame 4. A sealing plate 55 is fixedly installed on the top of the first hydraulic rod 54. The outer edge of the sealing plate 55 fits against the inner wall of the storage frame 4. The sealing plate 55 can completely cover one end of the output pipe 3.

[0086] The function of the first hydraulic rod 54 is to drive the sealing plate 55 to move up and down, precisely control the opening and closing of the storage frame 4 and the sealing of the output pipe 3, and realize the start and stop control of the potting adhesive delivery.

[0087] The function of the sealing plate 55 is to seal the top space of the storage frame 4 and completely block the port of the output pipe 3 to prevent the potting compound from flowing back and causing waste of raw materials. At the same time, it prevents air from entering the storage frame 4 and affecting the quality of the potting compound.

[0088] A sealing door 56 is slidably provided on the side of the work frame 7. A self-locking device 57 is installed on the side of the sealing door 56. A handle 58 is fixedly provided on the side of the sealing door 56.

[0089] The function of the sealing door 56 is to close the opening of the working frame 7, ensure the airtightness of the vacuum environment inside the working frame 7, prevent air leakage, and facilitate the operation of the staff to take out and put in the power module.

[0090] The self-locking device 57 is used to lock the closed position of the sealing door 56 to prevent the door from loosening or opening during the potting process, thus ensuring operational safety and the stability of the vacuum environment.

[0091] The handle 58 is designed to make it easier for staff to open and close the sealed door 56, making it more convenient and labor-saving to pick up and put down the power module.

[0092] First, refer to Figure 6 , Figure 12 and Figure 15 In this embodiment, the bottom feeding component 10 is equipped with a flow divider plate 15 structure to perform slow flow diversion potting from the bottom of the power module. Combined with the high vacuum environment created by the vacuum component 8, it reduces the amount of air bubbles trapped inside the potting compound from the source. The anti-clogging structure of the one-way valve 17 and the gear 26 and rack 28 can automatically seal the flow divider hole 16 after the potting operation is completed, preventing the potting compound from backflowing, solidifying and clogging the flow divider hole 16, ensuring that the device can operate continuously for a long time without frequent disassembly, cleaning and maintenance.

[0093] Then, refer to Figure 3 and Figure 5In this embodiment, the stirring component 2 can fully pre-stir and degas the potting compound, eliminating air bubbles inside the potting compound in advance. The metering pump 33 can achieve precise metering control of the compound. The dual structures work together to make the potting compound more uniform in texture and more accurate in filling amount, effectively avoiding problems such as uneven glue layer and residual air bubbles after potting, and greatly improving the potting quality of the power module.

[0094] Secondly, see Figure 9 and Figure 11 In this embodiment, the fixing component 9 adopts the elastic clamping method of the spring 53 driving the top rod 52, which can quickly complete the clamping of the power module without tools, and adapt to power modules of different specifications. The push plate 48 can automatically scrape off the air bubbles on the top of the potting adhesive layer, and cooperate with the carrier frame 50 to complete the collection of residual adhesive, which greatly reduces the residual rate of air bubbles after potting and ensures that the potting surface is flat and smooth.

[0095] Again, see Figure 6 In this embodiment, the vacuum component 8 can continuously extract air from the inside of the working frame 7 to maintain a stable high vacuum environment inside the working frame 7. The device integrates multiple functions such as stirring and pre-degassing, vacuum potting, bottom slow-flow potting, bubble scraping, automatic anti-clogging, and residual glue collection. The process is continuous and highly automated, effectively improving the potting efficiency of the power module and the finished product qualification rate.

[0096] Finally, see Figure 3 , Figure 5 , Figure 7 , Figure 9 , Figure 10 , Figure 15 In this embodiment, the bottom slow-flow diversion potting technology adopted by the device completely changes the flow path of the adhesive in traditional potting equipment. It allows the potting adhesive to slowly fill from the bottom of the power module upwards. Combined with the high vacuum working environment, air cannot be trapped inside the potting adhesive, thus eliminating the generation of air bubbles from the source. Even if there are trace air bubbles inside the potting adhesive, they can quickly float to the surface of the adhesive layer in the vacuum environment. With the mechanical scraping action of the push plate 48, the air bubbles are completely eliminated. After potting, the adhesive layer of the power module is dense, without gaps or air bubbles. The insulation performance, heat dissipation performance and structural stability are significantly improved, effectively extending the service life and operational reliability of the power module.

[0097] The device uses a stirring component 2, with the stirring rod 30 attached to the inner wall of the container 1. There is no glue residue during the stirring process, resulting in higher raw material utilization. At the same time, the speed of the first motor 32 can be adjusted according to the different viscosities of the potting compound, adapting to the stirring needs of different types and formulations of potting compounds, thus having a wider range of applications.

[0098] The precise dispensing control function of the metering pump 33 can flexibly set the dispensing speed and total amount of dispensing according to the size of the power module, the potting thickness, and the process standards, so as to realize the staged and layered potting operation. This avoids the problem of air bubbles not being able to be expelled due to excessive dispensing at one time. At the same time, it precisely controls the amount of potting adhesive used, reduces raw material waste, and lowers production and processing costs.

[0099] The fixed component 9 adopts an elastic clamping structure, which can quickly complete the clamping and disassembly of power modules without the need for manual adjustment of clamping distance or the use of any tools. The clamping efficiency is greatly improved, the cost of manual operation is reduced, and it can adapt to power modules of different sizes and models without the need for frequent changes of tooling fixtures, making it more adaptable.

[0100] The inclined surface 44 at the bottom of the support platform 43 and the connecting frame 42 can guide the potting compound to flow smoothly without any dead corners, further improving the uniformity of potting, ensuring consistent potting quality for each power module, and improving the product yield.

[0101] The vacuum assembly 8 uses a high-power vacuum pump 38, which has a fast pumping speed and stable vacuum level. It can quickly bring the working frame 7 to the high vacuum environment required by the process. The vacuum potting effect is far superior to traditional atmospheric pressure potting. The potting compound is filled more densely, and the product quality is more stable. At the same time, the vacuum level inside the working frame 7 can be adjusted according to the characteristics of different potting compounds to adapt to different process requirements.

[0102] The bottom feeding component 10 adopts a gear 26 and rack 28 linkage anti-clogging structure, which uses pure mechanical transmission and does not require additional electric drive. The structure has high reliability and low failure rate. After the potting operation is completed, it can automatically seal the diversion hole 16 to prevent the potting glue from backflowing, solidifying and blocking the diversion hole 16. There is no need for frequent disassembly and cleaning. The device can operate continuously for a long time, which greatly improves production efficiency and is suitable for the needs of large-scale production and processing.

[0103] The one-way valve 17 further ensures the one-way flow of the potting compound, preventing backflow and leakage, and ensuring a continuous and stable potting process without interruption of the compound supply.

[0104] The device adopts a modular integrated design, integrating functions such as stirring, storage, metering, vacuuming, filling, defoaming, anti-clogging, and residual glue collection. It has a small footprint, compact layout, and convenient installation. It can be directly connected to existing power module production lines without additional modifications to the production site, thus reducing the equipment upgrade costs for enterprises.

[0105] All components of the device adopt a detachable connection design, making subsequent maintenance, cleaning, and component replacement simple and convenient, without the need for professional technicians, thus reducing the difficulty and cost of equipment operation and maintenance.

[0106] The cooperation between the sealing door 56 and the self-locking device 57 ensures the sealing of the working frame 7, preventing leakage in the vacuum environment and enhancing the stability and reliability of the potting process. The cooperation between the first hydraulic rod 54 and the sealing plate 55 allows for precise control of the delivery of potting compound, preventing backflow of the potting compound and air ingress, thus ensuring the quality of the potting compound. The support leg 36 provides stable support for the entire device, ensuring no shaking or displacement during equipment operation and effectively guaranteeing the potting accuracy.

[0107] This device can adapt to the vacuum potting processing needs of various power modules. Whether it is a small precision power module or a large industrial power module, it can achieve stable potting, efficient defoaming, and non-destructive processing. The potting defect rate is much lower than that of traditional potting equipment, and the yield rate is greatly improved. It effectively solves the pain points of the industry, such as many potting bubbles, easy damage to components, and cumbersome equipment maintenance.

[0108] The device is stable in operation, simple to operate, and highly automated. Operators only need to perform basic operations such as feeding and unloading materials, without the need for complex debugging and settings, which reduces the skill requirements for operators and reduces the error rate of manual operation.

[0109] All structures of the device have been optimized around the potting characteristics of the power module, taking into account multiple core requirements such as component protection, bubble removal, potting accuracy, equipment durability, and ease of operation, and fully meeting the high-precision, high-reliability, and high-efficiency production requirements of modern power modules.

[0110] This device can be widely used in power module potting processing in many fields such as new energy, industrial control, rail transportation, aerospace, and automotive electronics. It is adaptable to the production needs of power modules with different specifications and packaging forms, and does not require large-scale equipment modification for different products, making it highly versatile.

[0111] The overall structure of the device is made of corrosion-resistant and wear-resistant materials, which can adapt to the complex production environment of the potting workshop. It is not prone to rust, deformation, or wear after long-term use, resulting in a longer service life and higher long-term stability.

[0112] Compared to traditional potting equipment, this device requires less manual intervention and boasts a higher degree of automation. Operators only need to perform simple feeding and unloading operations, significantly reducing labor costs and operational error rates. The utilization rate of potting compound is significantly improved, residual compound is drastically reduced, making it more environmentally friendly, while also reducing raw material consumption and further lowering production costs. The device exhibits a low failure rate during operation, meeting the needs of long-term continuous production. It is suitable for large-scale, mass production of power modules, effectively helping companies increase capacity, shorten production cycles, and enhance product market competitiveness.

[0113] Working principle: The vacuum potting and bubble removal device and method for this power module involves first pouring the potting compound into the holding container 1, then starting the stirring assembly 2 to stir and pre-de-gas the potting compound. The power module to be potted is then placed on the support platform 43, and the spring 53 pushes the top rod 52 to automatically clamp and fix the power module. The sealing door 56 is closed and locked by the self-locking device 57. The vacuum pump 38 is started to extract air from the working frame 7 to create a high vacuum environment. The metering pump 33 is started to transport the potting compound in the storage frame 4 to the feeding pipe 13 through the connecting pipe 11. The potting compound then pushes open... The spring baffle 18 and the one-way valve 17 flow out slowly through the diversion hole 16 of the diversion plate 15, completing the layered potting from the bottom of the power module upwards. After potting, the metering pump 33 stops working, the spring baffle 18 moves down, and through the linkage of the rack 28 and the gear 26, it drives the filling column 22 to move up and insert into the diversion hole 16 to complete the sealing. The second hydraulic rod 46 is activated to drive the push plate 48 to move, scraping off the air bubbles on the top of the adhesive layer. The air bubbles and residual adhesive fall into the bearing frame 50 along the inclined plate 49. Finally, the self-locking device 57 and the sealing door 56 are opened, and the potted power module can be taken out.

[0114] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum potting and bubble removal device for a power module, characterized in that, include: Container (1); A stirring assembly (2) is installed inside the container (1); Output pipe (3), the output pipe (3) is fixedly installed on both sides of the bottom of the container (1), and one end of the output pipe (3) is connected to the container (1); Storage frame (4), the storage frame (4) is fixedly installed at the bottom of the holding bucket (1), and the other end of the output pipe (3) is connected to the storage frame (4); The mounting frame (5) is fixedly installed at the bottom of the storage frame (4); A quantitative component (6) is installed inside the mounting frame (5), and the mounting frame (5) and the storage frame (4) are connected through the quantitative component (6); The work frame (7) is fixedly installed on the side of the mounting frame (5) by a fixing post; Vacuum assembly (8), which is mounted on the side of the working frame (7); Fixing component (9), said fixing component (9) is installed inside the working frame (7); and Bottom feeding assembly (10) is installed at the bottom of the working frame (7). The bottom feeding assembly (10) includes a connecting pipe (11). One end of the connecting pipe (11) is fixedly disposed at the bottom of the quantitative assembly (6). The other end of the connecting pipe (11) is fixedly disposed with the working frame (7). A support pipe (12) is fixedly disposed at the bottom center of the working frame (7). A feeding pipe (13) is fixedly disposed inside the support pipe (12). The bottom of the feeding pipe (13) is fixedly disposed with the top of the connecting pipe (11).

2. The vacuum potting and bubble removal device for a power module according to claim 1, characterized in that, The top of the feeding pipe (13) is fixedly provided with an installation ring (14), and a diversion plate (15) is fixedly provided on the installation ring (14). The diversion plate (15) is provided with a plurality of diversion holes (16).

3. The vacuum potting and bubble removal device for a power module according to claim 2, characterized in that, A one-way valve (17) is fixedly installed inside the feed pipe (13). A spring baffle (18) is slidably installed on the one-way valve (17). A first slide groove (19) is opened on both sides of the top of the feed pipe (13). A first slider (20) is slidably installed in the first slide groove (19). A sliding plate (21) is fixedly installed between the first sliders (20). A filling column (22) is fixedly installed on the top of the sliding plate (21). The number of filling columns (22) is the same as the number of diversion holes (16). The filling columns (22) are adapted to the diversion holes (16). A second slide groove (23) is opened on both sides of the bottom of the feed pipe (13). A second slider (24) is slidably installed in the second slide groove (23). The slider (24) is fixedly set with the spring baffle (18). A stop block (25) is slidably set in the first slide groove (19) and the second slide groove (23). The stop block (25) is fixedly set with the corresponding first slider (20) and second slider (24). A gear (26) is rotatably set in the first slide groove (19). A connecting groove (27) is opened on both sides of the feeding pipe (13). The connecting groove (27) communicates with the first slide groove (19) and the second slide groove (23). A rack (28) is fixedly set on the side of the second slider (24) and the first slider (20). The rack (28) is slidably set with the connecting groove (27). The rack (28) meshes with the gear (26).

4. The vacuum potting and bubble removal device for a power module according to claim 3, characterized in that, The stirring assembly (2) includes a stirring shaft (29), which is rotatably disposed inside the container (1). A stirring rod (30) is fixedly disposed on the stirring shaft (29), and the stirring rod (30) is in contact with the inner wall of the container (1). A protective frame (31) is fixedly disposed on the top of the container (1), and a first motor (32) is fixedly disposed inside the protective frame (31). The output shaft of the first motor (32) is connected to the top of the stirring shaft (29) by a key.

5. The vacuum potting and bubble removal device for a power module according to claim 4, characterized in that, The quantitative component (6) includes a quantitative pump (33), which is fixedly installed in the mounting frame (5). A first clamp (34) is fixedly installed on the top of the quantitative pump (33), and the first clamp (34) is detachably installed on the bottom of the storage frame (4). A second clamp (35) is fixedly installed on the side of the quantitative pump (33), and the second clamp (35) is detachably installed on the connecting pipe (11).

6. The vacuum potting and bubble removal device for a power module according to claim 5, characterized in that, The vacuum assembly (8) includes a support leg (36), which is fixedly disposed around the bottom of the storage frame (4). A mounting bracket (37) is fixedly disposed on the side of the support leg (36), and a vacuum pump (38) is fixedly disposed on the mounting bracket (37). The top of the vacuum pump (38) is connected to the working frame (7) through a suction pipe (39).

7. The vacuum potting and bubble removal device for a power module according to claim 6, characterized in that, The fixing component (9) includes a mounting platform (40), which is fixedly installed on the top of the support tube (12). The mounting platform (40) is connected to the support tube (12). A square frame (41) is fixedly installed on the top of the mounting platform (40). At least four connecting brackets (42) are fixedly installed at the center of the mounting platform (40). A bearing platform (43) is fixedly installed between the connecting brackets (42). The bearing platform (43) is located directly above the support tube (12) and is located inside the square frame (41). The bottom of the bearing platform (43) and the connecting brackets (42) are both provided with inclined surfaces (44). A slide rail (45) is fixedly installed on one side of the mounting platform (40). A second hydraulic rod (45) is fixedly installed on the side of the working frame (7). 6) A movable rod (47) is fixedly installed on the output shaft of the second hydraulic rod (46). The movable rod (47) is slidably installed with the slide rail (45). A push plate (48) is fixedly installed on the top of the movable rod (47). The push plate (48) is adapted to the top of the square frame (41). An inclined plate (49) is fixedly installed on the other side of the mounting platform (40). A bearing frame (50) is slidably installed at the bottom of the working frame (7). The bearing frame (50) is located directly below the inclined plate (49). Sleeves (51) are fixedly installed on both sides of the square frame (41). A top rod (52) is slidably installed inside the sleeve (51). One end of a plurality of springs (53) is fixedly installed inside the sleeve (51). The other end of the springs (53) is fixedly installed at the bottom of the top rod (52).

8. The vacuum potting and bubble removal device for a power module according to claim 7, characterized in that, A first hydraulic rod (54) is fixedly installed on the inner side of the top of the storage frame (4), and a sealing plate (55) is fixedly installed on the top of the first hydraulic rod (54). The sealing plate (55) is in contact with the inner wall of the storage frame (4) and covers one end of the output pipe (3).

9. A vacuum potting and bubble removal device for a power module according to claim 7, characterized in that, A sealing door (56) is slidably provided on the side of the work frame (7), a self-locking device (57) is installed on the side of the sealing door (56), and a handle (58) is fixedly provided on the side of the sealing door (56).

10. A method for vacuum potting and bubble removal of a power module according to any one of claims 1-9, characterized in that, Includes the following steps: S1: First, put the potting compound into the container (1), then start the mixing component (2) to mix the potting compound and initially remove air bubbles; S2: Place the power module on the support platform (43), and at the same time, the sleeve rod and spring (53) press against both sides of the power module. S3: Then the processed potting compound is transported to the storage box (4) through the output pipe (3), and the potting compound is transported into the work box (7) through the metering component (6), and the vacuum component (8) is activated to perform vacuum treatment on the work box (7); S4: When the potting compound enters the feeding pipe (13) through the connecting pipe (11), the potting compound is transported to the box (41) through the diversion hole (16) by the one-way valve (17) to perform staged and layered potting treatment on the power module; S5: Reduce the coverage of air bubbles by bottom injection. After the injection is completed, start the second hydraulic rod (46). The second hydraulic rod (46) drives the push plate (48) to push out the air bubbles at the top, so that they fall into the bearing frame (50) below along the inclined plate (49). S6: After the potting is completed, the spring baffle (18) moves downward, which drives the second slider (24) to move. The movement of the second slider (24) drives the rack (28) to move, which in turn drives the gear (26) to move the first slider (20). The movement of the first slider (20) drives the sliding plate (21) to move. The movement of the sliding plate (21) drives the filling column (22) to slide into the diversion hole (16) to prevent the potting compound from backflowing and clogging the diversion hole (16). S7: After the potting is completed, open the self-locking device (57), pull the handle (58) to open the sealing door (56), and take out the potted power module.

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