Double-sided heat dissipation power module packaging process and device
By using a potting device that combines vacuuming and vibration mechanisms, the problem of poor bonding between pores and interfaces during the potting process of double-sided heat dissipation power modules was solved, achieving efficient heat conduction and layered sealing, thus improving heat dissipation efficiency.
Patent Information
- Application Number
- CN202511169231.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-20
- Publication Date
- 2026-01-13
AI Technical Summary
During the potting process of the double-sided heat dissipation power module, air is easily trapped and pores are formed, which reduces the heat dissipation efficiency. At the same time, existing devices are difficult to achieve a tight interface between heat conduction and sealing, which also affects the heat dissipation efficiency.
A potting device employing a combination of a vacuum mechanism and a vibration mechanism works by layering inner and outer needle tubes for potting. The combination of a vacuum environment and vibration ensures the fusion of the colloid interface and the removal of air bubbles, achieving a layered combination of thermal conductivity and sealing functions.
It effectively avoids the formation of pores, improves heat dissipation efficiency, ensures tight interfacial bonding, enhances potting effect, promotes uniform dispersion of colloid, and improves heat dissipation performance.
Smart Images
Figure CN121335587A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of potting encapsulation of double-sided heat dissipation power modules, and more specifically, to a double-sided heat dissipation power module encapsulation process and apparatus. Background Technology
[0002] A double-sided heat dissipation power module typically refers to a power module design that can dissipate heat from both sides. This design may employ special materials or structures, such as double-sided heat sinks, heat pipes, or liquid cooling systems, to achieve efficient heat conduction. Compared to traditional single-sided heat dissipation, double-sided heat dissipation design can improve heat dissipation efficiency and reduce operating temperature. Double-sided heat dissipation power modules may be widely used in applications requiring high power density and efficient heat dissipation, such as electric vehicles, industrial frequency converters, and rail transportation. Double-sided heat dissipation power modules require potting during production to achieve thermal conductivity and sealing properties. However, potting is often performed in an external environment, making it easy for air to be trapped during filling. This air forms pores after curing, reducing the heat dissipation efficiency of the double-sided heat dissipation power module. Secondly, current potting devices often pot high thermal conductivity fillers and low viscosity sealing fillers separately. This results in the lower surface energy of the first-cured material, making it difficult for the subsequent colloid to completely wet it. This leads to poor interfacial bonding, and the thermal conductivity of the air in the gaps is much lower than that of the potting compound, creating a heat dissipation bottleneck and affecting heat dissipation efficiency. How to invent a double-sided heat dissipation power module packaging process and device to improve these problems has become an urgent issue for those skilled in the art. Summary of the Invention
[0003] To overcome the above shortcomings, the present invention provides a double-sided heat dissipation power module packaging process and apparatus, which aims to improve the problem that the potting process is mostly carried out in the external environment, and air is easily entangled during the filling process, forming pores after curing, thereby reducing the heat dissipation efficiency of the double-sided heat dissipation power module.
[0004] This invention is implemented as follows: This invention provides a double-sided heat dissipation power module packaging device, including a support base and two sets of conveying devices disposed on the support base. The support base is provided with a controller on the top. The device also includes: a potting mechanism disposed on the top of the support base; a vacuuming mechanism connected to the potting mechanism; and a vibration mechanism disposed on the top of the support base.
[0005] Preferably, the potting mechanism includes a support frame at the top of the support base, a hydraulic rod at the top of the support frame, a potting cover at one end of the hydraulic rod, an electric telescopic rod at the top inside the potting cover, an outer needle tube at one end of the electric telescopic rod, an inner needle tube at the top inside the outer needle tube, a high thermal conductivity filler delivery tube connected to the inner needle tube, a low viscosity sealing filler delivery tube connected to the outer needle tube, and a sealing soft sleeve at the bottom of the potting cover.
[0006] Preferably, the vacuuming mechanism includes an extraction pipe connected to the inside of the filling cover, an extraction cylinder on the top of the support base, one end of the extraction pipe connected to the extraction cylinder, a first one-way solenoid valve inside the extraction pipe, an exhaust pipe connected to the extraction cylinder, a second one-way solenoid valve inside the exhaust pipe, a piston head slidingly inside the extraction cylinder, a piston rod at one end of the piston head, a connecting plate at one end of the piston rod, a first rotating shaft above the support base, two sets of first vertical plates sleeved on the outer wall of the first rotating shaft, and the bottom of both sets of first vertical plates connected to the top of the support base. A first driven pulley is sleeved on the outer wall of the first rotating shaft. A motor is located above the support base, and a first driving pulley is connected to the output end of the motor. A first belt is sleeved on the outer walls of the first driving pulley and the first driven pulley. A disc is located at one end of the first rotating shaft, and a connecting rod is hinged to the outer wall of the disc. A guide rail is located at the top of the support base, and a slider is slidably connected to the outer wall of the guide rail. One end of the connecting rod is hinged to the side wall of the slider. One end of the connecting plate is connected to the side wall of the slider. A connecting mechanism is located at the other end of the first rotating shaft, and the connecting mechanism is connected to the vibration mechanism.
[0007] Preferably, the vibration mechanism includes a second vertical plate on the top of a support base, the side wall of the motor connected to the side wall of the second vertical plate, a rotating tube penetrating the outer wall of the second vertical plate, a second driving pulley sleeved on the outer wall of the rotating tube, a fixed box on the top of the support base, a second rotating shaft connected to the bottom of the fixed box via a bearing, a rotating plate at one end of the second rotating shaft, a worm gear sleeved on the outer wall of the second rotating shaft, a third rotating shaft connected to the inner side wall of the fixed box via a bearing, a worm gear meshing with the worm gear sleeved on the outer wall of the third rotating shaft, a second driven pulley outside the fixed box, a second belt sleeved on the outer walls of the second driving pulley and the second driven pulley, one end of the third rotating shaft penetrating the inner side wall of the fixed box and connected to the second driven pulley, four sets of pressing blocks on the top of the rotating plate, four sets of lifting rods movably penetrating the top of the fixed box, a vibration plate on the top of the four sets of lifting rods, and fixed wheels at the bottom of each of the four sets of lifting rods.
[0008] Preferably, the four sets of extrusion blocks are arranged in a circumferential array on the top of the rotating plate, and the extrusion blocks are arranged in a right-angled trapezoidal shape.
[0009] Preferably, the vibrating plate is located between two sets of conveying devices, a set of guide rollers is embedded in the top of the vibrating plate, and a clamping device is provided on the top of the vibrating plate.
[0010] Preferably, the connecting mechanism includes a sleeve at one end of a first rotating shaft, the inner wall of the sleeve having multiple sets of first teeth, a sleeve fitted onto the outer wall of the rotating tube, a rotary joint at one end of the rotating tube, an inflation tube at one end of the rotary joint, a fixing plate fitted onto the outer wall of the inflation tube, one end of the fixing plate being connected to the side wall of a second vertical plate, a fixing ring inside the sleeve, an airbag inside the fixing ring, one end of the rotating tube communicating with the airbag, six sets of movable rods on the outer wall of the airbag, and six sets of second teeth meshing with the first teeth on the outside of the sleeve. One end of each of the six sets of movable rods passes through the inner wall of the fixing ring and the inner wall of the sleeve and connects to the second teeth. A spring is fitted onto the outer wall of each movable rod, one end of the spring being connected to the inner side wall of the fixing ring, and the other end of the spring being connected to the outer side wall of the airbag.
[0011] Preferably, the outer wall radius of the sleeve is smaller than the inner wall radius of the sleeve, and the sleeve is located inside the sleeve.
[0012] Preferably, the inner needle tube is longer than the outer needle tube, and both the inner and outer needle tubes are made of aluminum alloy.
[0013] A method for packaging a double-sided heat dissipation power module includes the following steps: S1: Place the double-sided heat dissipation power module on the right-side conveying device and convey it to the vibrating plate. Under the action of the clamping device, the double-sided heat dissipation power module can be clamped and fixed. Then, the hydraulic rod drives the potting cover to move downward, so that the bottom of the sealing soft sleeve is attached to the vibrating plate. The vacuum mechanism is used to evacuate the inside of the potting cover. S2: When the vacuum reaches a certain level, the electric telescopic rod drives the outer and inner needle tubes to move downwards and enter the double-sided heat dissipation power module. At this time, the connecting mechanism links the first rotating shaft with the vibration mechanism, so that the vibration mechanism can vibrate the double-sided heat dissipation power module while the subsequent potting and vacuuming is performed. S3: Then, high thermal conductivity filler is delivered to the inner needle tube through the high thermal conductivity filler delivery pipe, and low viscosity sealing filler is delivered to the outer needle tube through the low viscosity sealing filler delivery pipe. The vacuum environment can avoid the influence of external air and generate pores, and can achieve the functional layering of thermal conductivity and sealing, making the interface tightly bonded. At the same time, the vibration mechanism can more effectively remove air bubbles and promote the interface fusion of the two colloids, so that the filler is evenly dispersed and the colloid backflow is avoided. After the filling is completed, the hydraulic rod drives the filling cover away from the vibrating plate, and the motor stops working. Under the action of the guide roller group, the filled double-sided heat dissipation power module is transported to the left conveying device for conveying.
[0014] The beneficial effects of this invention are: 1. By setting up a vacuuming mechanism, the present invention can evacuate the inside of the potting cover and remove air, thereby avoiding the problem of air being drawn into the double-sided heat dissipation power module during potting, which would lead to the formation of pores after curing, and improving the heat dissipation effect. 2. This invention, by setting inner and outer needle tubes, enables layered potting, achieving functional layering of heat conduction and sealing. This ensures a tight interface bond, preventing gaps and further improving heat dissipation efficiency. Simultaneously, a connecting mechanism links the vacuuming mechanism and the vibration mechanism (initially, the vacuum inside the potting enclosure needs to be evacuated to a certain degree before potting; simultaneous vacuuming is also required during potting, as absolute vacuum cannot be achieved, necessitating continuous vacuuming). This allows for vertical vibration of the double-sided heat dissipation power module during potting, further expelling air bubbles and promoting interfacial fusion of the two colloids. This ensures uniform dispersion of the filler, prevents colloid backflow, and results in excellent potting performance and improved heat dissipation efficiency. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the overall structure of a double-sided heat dissipation power module packaging process and device provided by an embodiment of the present invention; Figure 2 This is a schematic diagram of the potting mechanism structure of a double-sided heat dissipation power module packaging process and device provided by an embodiment of the present invention; Figure 3 This invention provides a double-sided heat dissipation power module packaging process and apparatus. Figure 2 Enlarged view of the structure at point A in the image; Figure 4 This is a schematic diagram of the vacuum mechanism structure of a double-sided heat dissipation power module packaging process and device provided by an embodiment of the present invention; Figure 5 This is a schematic diagram of the second belt and the second drive pulley structure of a double-sided heat dissipation power module packaging process and device provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the sleeve and sleeve structure of a double-sided heat dissipation power module packaging process and device provided by an embodiment of the present invention; Figure 7This is a schematic diagram of the internal structure of the sleeve of a double-sided heat dissipation power module packaging process and device provided by an embodiment of the present invention; Figure 8 This is a schematic diagram of the fixing box and vibration plate structure of a double-sided heat dissipation power module packaging process and device provided by an embodiment of the present invention; Figure 9 This is a schematic diagram of the internal structure of a mounting box for a double-sided heat dissipation power module packaging process and device provided by an embodiment of the present invention.
[0017] In the diagram: 1. Support base; 2. Vacuuming mechanism; 200. Evacuation pipe; 201. First one-way solenoid valve; 202. Exhaust pipe; 203. Second one-way solenoid valve; 204. Evacuation cylinder; 205. Piston head; 206. Piston rod; 207. Connecting plate; 208. Guide rail; 209. Slider; 210. Connecting rod; 211. First vertical plate; 212. Disc; 213. First rotating shaft; 214. First driven pulley; 215. First belt; 216. First driving pulley; 217. Motor; 3. Conveying device; 4. Vibration mechanism; 400. Second vertical plate; 401. Second driven pulley; 402. Rotating pipe; 403. Second driving pulley; 404. Second belt; 405. Vibrating plate; 406. Lifting rod; 407. Fixed... 408. Fixed box; 409. Fixed wheel; 410. Extrusion block; 411. Rotating plate; 412. Worm gear; 413. Second rotating shaft; 414. Third rotating shaft; 5. Filling mechanism; 500. Filling cover; 501. Hydraulic rod; 502. Support frame; 503. Electric telescopic rod; 504. Sealing soft sleeve; 505. High thermal conductivity filler conveying pipe; 506. Low viscosity sealing filler conveying pipe; 507. Inner needle tube; 508. Outer needle tube; 6. Connecting mechanism; 600. Sleeve; 601. First tooth; 602. Sleeve; 603. Rotary joint; 604. Inflation pipe; 605. Fixed plate; 606. Second tooth; 607. Fixed ring; 608. Airbag; 609. Movable rod; 610. Spring; 7. Clamping device; 8. Guide roller group. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.
[0019] Example, refer to Figures 1-9A double-sided heat dissipation power module packaging device includes a support base 1 and two sets of conveying devices 3 disposed on the support base 1. A controller is provided on the top of the support base 1. The device also includes: a potting mechanism 5 disposed on the top of the support base 1; a vacuuming mechanism 2 connected to the potting mechanism 5; and a vibration mechanism 4 disposed on the top of the support base 1.
[0020] The potting mechanism 5 includes a support frame 502 at the top of the support base 1, a hydraulic rod 501 at the top of the support frame 502, a potting cover 500 at one end of the hydraulic rod 501, an electric telescopic rod 503 at the top inside the potting cover 500, an outer needle tube 508 at one end of the electric telescopic rod 503, an inner needle tube 507 at the top inside the outer needle tube 508, a high thermal conductivity filler delivery tube 505 connected to the inner needle tube 507, a low viscosity sealing filler delivery tube 506 connected to the outer needle tube 508, and a sealing soft sleeve 504 at the bottom of the potting cover 500.
[0021] It should be noted that: by using the high thermal conductivity filler delivery pipe 505 to deliver high thermal conductivity filler to the inner needle tube 507, and by using the low viscosity sealing filler delivery pipe 506 to deliver low viscosity sealing filler to the outer needle tube 508, the functional stratification of thermal conductivity and sealing can be achieved, making the interface tightly bonded and preventing gaps, thereby further improving heat dissipation efficiency.
[0022] The vacuuming mechanism 2 includes a suction pipe 200 connected inside the filling cover 500, a suction cylinder 204 on the top of the support base 1, one end of the suction pipe 200 connected to the suction cylinder 204, a first one-way solenoid valve 201 inside the suction pipe 200, an exhaust pipe 202 connected to the suction cylinder 204, a second one-way solenoid valve 203 inside the exhaust pipe 202, a piston head 205 slidingly inside the suction cylinder 204, a piston rod 206 at one end of the piston head 205, a connecting plate 207 at one end of the piston rod 206, a first rotating shaft 213 above the support base 1, two sets of first vertical plates 211 sleeved on the outer wall of the first rotating shaft 213, the bottom of both sets of first vertical plates 211 connected to the top of the support base 1. A first driven pulley 214 is sleeved on the outer wall of a rotating shaft 213. A motor 217 is located above the support base 1. A first driving pulley 216 is connected to the output end of the motor 217. A first belt 215 is sleeved on the outer wall of the first driving pulley 216 and the first driven pulley 214. A disc 212 is located at one end of the first rotating shaft 213. A connecting rod 210 is hinged to the outer wall of the disc 212. A guide rail 208 is located at the top of the support base 1. A slider 209 is slidably connected to the outer wall of the guide rail 208. One end of the connecting rod 210 is hinged to the side wall of the slider 209. One end of the connecting plate 207 is connected to the side wall of the slider 209. A connecting mechanism 6 is located at the other end of the first rotating shaft 213. The connecting mechanism 6 is connected to the vibration mechanism 4.
[0023] It should be noted that a vacuum is drawn during potting of the potting cover 500. This vacuum environment prevents the formation of air pores due to the influence of external air, thus improving the heat dissipation effect. The bottom of the potting cover 500 is equipped with a sealing sleeve 504, which is made of rubber. Rubber is relatively soft and has a certain height. When the potting cover 500 moves downward, the bottom of the sealing sleeve 504 only needs to be attached to the vibrating plate 405 to complete the seal. This allows the vibrating plate 405 to compress the sealing sleeve 504 during subsequent vertical vibration, leaving a certain amount of space for the vertical vibration of the vibrating plate 405.
[0024] The vibration mechanism 4 includes a support base 1 with a second vertical plate 400 on top. The side wall of the motor 217 is connected to the side wall of the second vertical plate 400. A rotating tube 402 passes through the outer wall of the second vertical plate 400. A second drive pulley 403 is sleeved on the outer wall of the rotating tube 402. A fixed box 407 is provided on the top of the support base 1. A second rotating shaft 413 is connected to the bottom of the fixed box 407 through a bearing. A rotating plate 410 is provided at one end of the second rotating shaft 413. A worm gear 411 is sleeved on the outer wall of the fixed box 407. A third rotating shaft 414 is connected to the inner wall of the fixed box 407 via a bearing. A worm 412 that meshes with the worm gear 411 is sleeved on the outer wall of the third rotating shaft 414. A second driven pulley 401 is provided on the outside of the fixed box 407. A second belt 404 is sleeved on the outer wall of the second driving pulley 403 and the second driven pulley 401. One end of the third rotating shaft 414 passes through the inner wall of the fixed box 407 and is connected to the second driven pulley 401. The rotating plate 410 is connected to the top of the rotating plate 410, which has four sets of extrusion blocks 409. The top of the fixed box 407 is movably connected to four sets of lifting rods 406. The top of the four sets of lifting rods 406 is equipped with a vibrating plate 405. The vibrating plate 405 is located between the two sets of conveying devices 3. The top of the vibrating plate 405 is embedded with a guide roller group 8. After the filling is completed, the filled double-sided heat dissipation power module is conveyed to the left conveying device 3 under the action of the guide roller group 8. The top of the vibrating plate 405 is equipped with a clamping device 7, which can clamp and fix the double-sided heat dissipation power module. The bottom of the four sets of lifting rods 406 is equipped with a fixed wheel 408. The four sets of extrusion blocks 409 are arranged in a circular array on the top of the rotating plate 410. The extrusion blocks 409 are arranged in the shape of a right trapezoid. When the extrusion blocks 409 rotate, they can squeeze the fixed wheel 408, thereby making the lifting rods 406 vibrate up and down, and realizing the vertical vibration of the vibrating plate 405.
[0025] It should be noted that vertical vibration, combined with the inner needle 507 and outer needle 508 for layered potting, promotes interfacial fusion of the two colloids, ensures uniform dispersion of the filler, prevents colloid backflow, and results in good potting performance. The connecting mechanism 6 includes a sleeve 600 at one end of a first rotating shaft 213. The inner wall of the sleeve 600 has multiple sets of first teeth 601. A sleeve 602 is fitted onto the outer wall of a rotating tube 402. The radius of the outer wall of the sleeve 602 is smaller than the radius of the inner wall of the sleeve 600. The sleeve 602 is located inside the sleeve 600. A rotary joint 603 is provided at one end of the rotating tube 402. An inflation tube 604 is provided at one end of the rotary joint 603. A fixing plate 605 is fitted onto the outer wall of the inflation tube 604. One end of the fixing plate 605 is connected to the side wall of the second vertical plate 400. The sleeve 602 has... A fixed ring 607 is provided, and an airbag 608 is provided inside the fixed ring 607. One end of the rotating tube 402 is connected to the airbag 608. Six sets of movable rods 609 are provided on the outer wall of the airbag 608. Six sets of second teeth 606 that mesh with the first tooth 601 are provided on the outside of the sleeve 602. One end of each of the six sets of movable rods 609 passes through the inner wall of the fixed ring 607 and the inner wall of the sleeve 602 and is connected to the second tooth 606. A spring 610 is sleeved on the outer wall of the movable rod 609. One end of the spring 610 is connected to the inner wall of the fixed ring 607, and the other end of the spring 610 is connected to the outer wall of the airbag 608.
[0026] It should be noted that the connection mechanism 6 is set to link the vacuuming mechanism 2 and the vibration mechanism 4. In the initial state, the vacuuming mechanism 2 is used to evacuate the vacuum inside the potting cover 500 to a certain degree before potting. However, the vacuuming also needs to be carried out simultaneously because it is impossible to achieve an absolute vacuum. Therefore, the vacuuming needs to be carried out continuously, thereby linking the vibration mechanism 4 to perform vertical vibration, so that vertical vibration can be carried out in a vacuum environment, which can better remove air bubbles.
[0027] The inner needle tube 507 is longer than the outer needle tube 508. Both the inner needle tube 507 and the outer needle tube 508 are made of aluminum alloy.
[0028] It should be noted that only syringes with a height difference can achieve layered filling when performing functional layered filling. Using aluminum alloy material can improve the service life of the syringes.
[0029] A method for packaging a double-sided heat dissipation power module includes the following steps: S1: Place the double-sided heat dissipation power module on the right-side conveying device 3 and convey it to the vibrating plate 405. Under the action of the clamping device 7, the double-sided heat dissipation power module can be clamped and fixed. Then, the hydraulic rod 501 drives the potting cover 500 to move downward, so that the bottom of the sealing soft sleeve 504 is attached to the vibrating plate 405. The vacuuming mechanism 2 is used to evacuate the inside of the potting cover 500. S2: When the vacuum is evacuated to a certain degree, the electric telescopic rod 503 drives the outer needle tube 508 and the inner needle tube 507 to move downward and enter the double-sided heat dissipation power module. At this time, the connecting mechanism 6 is used to link the first rotating shaft 213 with the vibration mechanism 4, so that the vibration mechanism 4 can vibrate the double-sided heat dissipation power module while the subsequent potting and vacuuming is performed. S3: Then, high thermal conductivity filler is delivered to the inner needle tube 507 through the high thermal conductivity filler delivery pipe 505, and low viscosity sealing filler is delivered to the outer needle tube 508 through the low viscosity sealing filler delivery pipe 506. The vacuum environment can avoid the influence of the outside air and generate pores, and can realize the functional layering of thermal conductivity and sealing, so that the interface is tightly bonded. At the same time, the vibration mechanism 4 can more effectively remove air bubbles and promote the interface fusion of the two colloids, so that the filler is evenly dispersed and the colloid backflow is avoided. After the filling is completed, the hydraulic rod 501 drives the filling cover 500 away from the vibration plate 405, and the motor 217 stops working. Under the action of the guide roller group 8, the filled double-sided heat dissipation power module is transported to the left conveying device 3 for conveying.
[0030] The working principle of this double-sided heat dissipation power module packaging process and device is as follows: The double-sided heat dissipation power module is placed on the right-side conveying device 3 and conveyed to the vibrating plate 405. Under the action of the clamping device 7, the double-sided heat dissipation power module can be clamped and fixed. Then, the hydraulic rod 501 drives the potting cover 500 to move downward, so that the bottom of the sealing soft sleeve 504 is attached to the vibrating plate 405. Then, the motor 217 drives the first driving pulley 216 to rotate, which drives the first driven pulley 214 to rotate under the cooperation of the first belt 215. The first driven pulley 214 drives the first rotating shaft 213 to rotate, the first rotating shaft 213 drives the disc 212 to rotate, the disc 212 drives the connecting rod 210 to perform circumferential motion, and the connecting rod 210 drives the slider 209 to move left and right on the guide rail 208. The slider 209 moves back and forth, driving the connecting plate 207 to move. The connecting plate 207 drives the piston rod 206 to move back and forth, and the piston rod 206 drives the piston head 205 to reciprocate within the vacuum cylinder 204. When the piston head 205 retracts, it can draw air from the filling cover 500 into the vacuum cylinder 204. When the piston head 205 squeezes, it can expel the air that has entered the vacuum cylinder 204 from the exhaust pipe 202 (the first one-way solenoid valve 201 and the second one-way solenoid valve 203 are set in opposite directions. The first one-way solenoid valve 201 allows air from the filling cover 500 to be drawn into the vacuum cylinder 204, and the second one-way solenoid valve 203 allows air from the vacuum cylinder 204 to be expelled from the exhaust pipe 202), thereby creating a vacuum within the filling cover 500. When a certain vacuum level is reached, the electric telescopic rod 503 drives the outer needle tube 508 and the inner needle tube 507 to move downwards and enter the double-sided heat dissipation power module. At this time, the external air pump inflates the airbag 608 through the inflation pipe 604 and the rotating pipe 402 (the external air pump is connected to the inflation pipe 604). The expansion of the airbag 608 can compress the movable rod 609 and the spring 610. The movable rod 609 drives the second tooth 606 to mesh with the first tooth 601. Thus, when the first rotating shaft 213 rotates, it will drive the sleeve 600 and the sleeve 602 to rotate. The sleeve 602 drives the rotating pipe 402 to rotate, and the rotating pipe 402 drives the second drive pulley 40. 3. Rotation, with the cooperation of the second belt 404, can drive the second driven pulley 401 to rotate. The second driven pulley 401 drives the third rotating shaft 414 and the worm 412 to rotate. The worm 412 drives the worm wheel 411 to rotate. The worm wheel 411 drives the second rotating shaft 413 and the rotating plate 410 to rotate. The rotating plate 410 drives the extrusion block 409 to rotate. The inclined surfaces of the four sets of extrusion blocks 409 can indirectly extrude the four sets of fixed wheels 408. The fixed wheels 408 drive the lifting rod 406 to move up and down reciprocally. Thus, the up and down shaking of the lifting rod 406 can drive the vibration plate 405 and the double-sided heat dissipation power module to vibrate vertically, so that the vibration plate 405 has a certain intensity of amplitude. Then, high thermal conductivity filler is delivered to the inner needle tube 507 through the high thermal conductivity filler delivery pipe 505, and low viscosity sealing filler is delivered to the outer needle tube 508 through the low viscosity sealing filler delivery pipe 506. The vacuum potting can avoid the influence of external air and generate pores, thus improving the heat dissipation effect. Moreover, the layered potting can achieve the functional layering of thermal conductivity and sealing, making the interface tightly bonded and preventing gaps, further improving the heat dissipation efficiency. At the same time, the vibration plate 405 can more effectively remove air bubbles and promote the interface fusion of the two colloids, making the filler evenly dispersed, avoiding colloid backflow, and achieving a good potting effect. After potting, the hydraulic rod 501 drives the potting cover 500 away from the vibration plate 405, and the motor 217 stops working. Under the action of the guide roller group 8, the potted double-sided heat dissipation power module is transported to the left conveying device 3 for conveying.
[0031] It should be noted that the specific models and specifications of the controller, low-viscosity sealing packing, high thermal conductivity packing, and one-way solenoid valve need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail here.
[0032] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A double-sided heat dissipation power module packaging device, comprising a support base (1) and two sets of conveying devices (3) disposed on the support base (1), wherein a controller is provided on the top of the support base (1), characterized in that, Also includes: Filling mechanism (5): The filling mechanism (5) is located on top of the support base (1); Vacuum pumping mechanism (2): The vacuum pumping mechanism (2) is connected to the potting mechanism (5); Vibration mechanism (4): The vibration mechanism (4) is located on top of the support base (1).
2. The double-sided heat dissipation power module packaging device according to claim 1, characterized in that, The potting mechanism (5) includes a support frame (502) provided on the top of the support base (1), a hydraulic rod (501) provided on the top of the support frame (502), a potting cover (500) provided at one end of the hydraulic rod (501), an electric telescopic rod (503) provided at the top inside the potting cover (500), an outer needle tube (508) provided at one end of the electric telescopic rod (503), an inner needle tube (507) provided at the top inside the outer needle tube (508), a high thermal conductivity filler delivery tube (505) connected to the inner needle tube (507), a low viscosity sealing filler delivery tube (506) connected to the outer needle tube (508), and a sealing soft sleeve (504) provided at the bottom of the potting cover (500).
3. The double-sided heat dissipation power module packaging device according to claim 1, characterized in that, The vacuuming mechanism (2) includes a suction pipe (200) connected inside the filling cover (500), a suction cylinder (204) on the top of the support base (1), one end of the suction pipe (200) connected to the suction cylinder (204), a first one-way solenoid valve (201) inside the suction pipe (200), an exhaust pipe (202) connected to the suction cylinder (204), a second one-way solenoid valve (203) inside the exhaust pipe (202), a piston head (205) sliding inside the suction cylinder (204), a piston rod (206) at one end of the piston head (205), a connecting plate (207) at one end of the piston rod (206), a first rotating shaft (213) above the support base (1), two sets of first vertical plates (211) sleeved on the outer wall of the first rotating shaft (213), the bottom of both sets of first vertical plates (211) connected to the top of the support base (1), and so on. The first driven pulley (214) is sleeved on the outer wall of the first rotating shaft (213). A motor (217) is provided above the support base (1). The output end of the motor (217) is connected to the first driving pulley (216). The outer walls of the first driving pulley (216) and the first driven pulley (214) are sleeved with a first belt (215). One end of the first rotating shaft (213) is provided with a disc (212). The outer wall of the disc (212) is hinged with a connecting rod (210). The top of the support base (1) is provided with a guide rail (208). The outer wall of the guide rail (208) is slidably connected with a slider (209). One end of the connecting rod (210) is hinged to the side wall of the slider (209). One end of the connecting plate (207) is connected to the side wall of the slider (209). The other end of the first rotating shaft (213) is provided with a connecting mechanism (6). The connecting mechanism (6) is connected to the vibration mechanism (4).
4. The double-sided heat dissipation power module packaging device according to claim 2, characterized in that, The vibration mechanism (4) includes a support base (1) with a second vertical plate (400) on top. The side wall of the motor (217) is connected to the side wall of the second vertical plate (400). A rotating tube (402) is provided through the outer wall of the second vertical plate (400). A second drive pulley (403) is sleeved on the outer wall of the rotating tube (402). A fixed box (407) is provided on the top of the support base (1). A second rotating shaft (413) is connected to the bottom of the fixed box (407) through a bearing. A rotating plate (410) is provided at one end of the second rotating shaft (413). A worm gear (411) is sleeved on the outer wall of the second rotating shaft (413). A third rotating shaft (414) is connected to the inner side wall of the fixed box (407) through a bearing. The outer wall of the third rotating shaft (414) is fitted with a worm (412) that meshes with the worm gear (411). The outside of the fixed box (407) is provided with a second driven pulley (401). The outer wall of the second driving pulley (403) and the second driven pulley (401) is fitted with a second belt (404). One end of the third rotating shaft (414) passes through the inner wall of the fixed box (407) and is connected to the second driven pulley (401). The top of the rotating plate (410) is provided with four sets of extrusion blocks (409). The top of the fixed box (407) is provided with four sets of lifting rods (406). The top of the four sets of lifting rods (406) is provided with a vibration plate (405). The bottom of the four sets of lifting rods (406) is provided with a fixed wheel (408).
5. The double-sided heat dissipation power module packaging device according to claim 4, characterized in that, The four sets of extrusion blocks (409) are arranged in a circular array on the top of the rotating plate (410), and the extrusion blocks (409) are arranged in a right trapezoidal shape.
6. The double-sided heat dissipation power module packaging device according to claim 4, characterized in that, The vibrating plate (405) is located between the two sets of conveying devices (3), and a guide roller group (8) is embedded in the top of the vibrating plate (405). A clamping device (7) is provided on the top of the vibrating plate (405).
7. The double-sided heat dissipation power module packaging device according to claim 3, characterized in that, The connecting mechanism (6) includes a sleeve (600) at one end of a first rotating shaft (213), the inner wall of the sleeve (600) being provided with multiple sets of first teeth (601), a sleeve (602) being sleeved on the outer wall of the rotating tube (402), a rotary joint (603) being provided at one end of the rotating tube (402), an inflation tube (604) being provided at one end of the rotary joint (603), a fixing plate (605) being sleeved on the outer wall of the inflation tube (604), one end of the fixing plate (605) being connected to the side wall of the second vertical plate (400), a fixing ring (607) being provided inside the sleeve (602), and an airbag (608) being provided inside the fixing ring (607). The rotating tube (402) is connected to the airbag (608) at one end. The outer wall of the airbag (608) is provided with six sets of movable rods (609). The sleeve (602) is provided with six sets of second teeth (606) that mesh with the first tooth (601) at the outside. One end of each of the six sets of movable rods (609) passes through the inner wall of the fixing ring (607) and the inner wall of the sleeve (602) and is connected to the second tooth (606). A spring (610) is sleeved on the outer wall of the movable rod (609). One end of the spring (610) is connected to the inner wall of the fixing ring (607), and the other end of the spring (610) is connected to the outer wall of the airbag (608).
8. The double-sided heat dissipation power module packaging device according to claim 7, characterized in that, The outer radius of the sleeve (602) is smaller than the inner radius of the sleeve (600), and the sleeve (602) is located inside the sleeve (600).
9. A double-sided heat dissipation power module packaging device according to claim 2, characterized in that, The inner needle tube (507) is longer than the outer needle tube (508), and both the inner needle tube (507) and the outer needle tube (508) are made of aluminum alloy.
10. The method for packaging a double-sided heat dissipation power module as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: Place the double-sided heat dissipation power module on the right-side conveying device (3) and convey it to the vibrating plate (405). Under the action of the clamping device (7), the double-sided heat dissipation power module can be clamped and fixed. Then the hydraulic rod (501) drives the potting cover (500) to move downward, so that the bottom of the sealing soft sleeve (504) is attached to the vibrating plate (405). The vacuuming mechanism (2) is used to evacuate the inside of the potting cover (500). S2: When the vacuum is evacuated to a certain degree, the electric telescopic rod (503) drives the outer needle tube (508) and the inner needle tube (507) to move downward and enter the double-sided heat dissipation power module. At this time, the first rotating shaft (213) is linked with the vibration mechanism (4) by the connecting mechanism (6), so that the vibration mechanism (4) can vibrate the double-sided heat dissipation power module while the subsequent potting and vacuuming is performed. S3: Then, high thermal conductivity filler is delivered to the inner needle tube (507) through the high thermal conductivity filler delivery pipe (505), and low viscosity sealant is delivered to the outer needle tube (508) through the low viscosity sealant delivery pipe (506). In a vacuum environment, the filling can avoid the influence of the outside air and generate pores. It can achieve the functional layering of thermal conductivity and sealing, making the interface tightly bonded. At the same time, the vibration mechanism (4) can more effectively remove air bubbles and promote the interface fusion of the two colloids, so that the filler is evenly dispersed. After the filling is completed, the hydraulic rod (501) drives the filling cover (500) away from the vibration plate (405), and the motor (217) stops working. Under the action of the guide roller group (8), the filled double-sided heat dissipation power module is delivered to the left conveying device (3) for conveying.