Preheating device for power device packaging
By combining a preheating chamber, top component, partition, and stretching plate, the problems of poor heat retention and uneven preheating in traditional preheating devices are solved, achieving efficient and uniform preheating of power devices.
Patent Information
- Application Number
- CN202520428957.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-12
AI Technical Summary
Traditional power device packaging preheating devices have poor preheating effects and inadequate heat retention, resulting in uneven preheating and heat waste.
The system employs a combination structure of preheating chamber, top component, partition and tension plate to form a highly efficient sealed environment. It utilizes infrared heating tubes to provide uniform heat and adjusts the temperature in real time through temperature sensors and control devices to prevent heat overflow and loosening of components.
It achieves effective heat preservation and uniform distribution, improves preheating rate and quality, and prevents heat waste and uneven preheating caused by loose components.
Smart Images
Figure CN223899634U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power device packaging technology, specifically a preheating device for power device packaging. Background Technology
[0002] Power device packaging is a crucial step towards the practical application of power semiconductor chips. It mainly utilizes specific materials and processes to properly seal chips such as power MOSFETs and IGBTs and establish connections with external circuits. On the one hand, it provides a solid "shield" for the chip, resisting physical shocks during transportation, installation, and use to prevent damage, while isolating it from moisture, dust, and chemicals to extend chip life. On the other hand, it achieves precise electrical connections, ensuring smooth signal and power transmission between the chip and external circuit boards through pins and pads within the package, meeting the needs of different circuits. In short, power device packaging plays an indispensable role in ensuring the normal operation of chips, improving product performance, and expanding application areas.
[0003] In the power device packaging process, the power devices need to be preheated. However, traditional preheating devices often have poor preheating effect, resulting in loosely packed power devices and uneven preheating, which may lead to cracks or other defects during the cooling process. In addition, traditional preheating devices have defects in heat preservation, that is, a large amount of heat will overflow, resulting in heat loss and waste. To address this, we propose a preheating device for power device packaging. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] In view of the shortcomings of the prior art, this utility model provides a preheating device for power device packaging, which solves the above-mentioned problems.
[0006] (II) Technical Solution
[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a preheating device for power device packaging, comprising a preheating box, a top component, a control device, a partition, and a stretching plate. The top component is provided at the top end of the preheating box, and the four corners of the top component are fixedly connected to the preheating box by adapter bolts. The preheating box and the top component form a hollow rectangular box. The control device is provided at the top end of the top component. A partition is provided inside the side wall of the preheating box, and a stretching plate is provided at the bottom end of the partition. The stretching plate slides correspondingly inside the lower end of the preheating box.
[0008] Preferably, the top end of the preheating box is provided with a rectangular extension plate, and each of the four corners of the extension plate is provided with a connecting hole. The side wall of the preheating box is provided with a mating opening, and the side of the side wall of the preheating box opposite to the mating opening is provided with an inner groove. A fixing hole is provided on the inner side of the inner groove. A feed inlet is provided at the bottom end of the inner groove. A set of sliding grooves distributed symmetrically are provided at the lower end of the preheating box. The sliding grooves are perpendicular to the feed inlet. Support columns are provided at the four corners of the bottom end of the preheating box.
[0009] Preferably, a high-temperature heat insulation plate is welded to the top end of the top component, and a connecting plate and a power supply are provided at the top end of the high-temperature heat insulation plate. The connecting plate and the power supply are horizontally distributed, the connecting plate is vertically positioned, and four connecting holes for fixed connection with the control device are opened on the vertical plate surface. Infrared heating tubes are provided at equal intervals at the bottom end of the top component.
[0010] Preferably, the partition consists of two parts: a heat-insulating slide plate and a handle. The heat-insulating slide plate slides in conjunction with the inner groove. A hollow rectangular tube is provided at the center of the top end of the side wall of the heat-insulating slide plate. The rectangular tube has a two-step hole inside and is connected to the handle.
[0011] Preferably, the handle has a T-shaped structure, and the end of the handle corresponding to the heat-insulating slide plate is a long shaft, which is engaged with the fixing hole.
[0012] Preferably, the stretching plate consists of two parts: a main plate and a supporting base plate. The supporting base plate is snapped onto the top end of the main plate. The surface of the supporting base plate has a set of equally spaced insertion holes. The bottom of the main plate, corresponding to the inside end of the preheating box, has two axisily distributed sliders. The sliders are slidably connected to the sliding grooves.
[0013] (III) Beneficial Effects
[0014] Compared with the prior art, the present invention provides a preheating device for power device packaging, which has the following advantages:
[0015] 1. The preheating device for power device packaging consists of a preheating box and a top component with a partition to form a highly efficient and sealed environment. This effectively ensures the preservation of preheating heat, prevents heat leakage and resource waste, and effectively ensures the uniformity and stability of internal heat, thereby improving the preheating rate and quality.
[0016] 2. The preheating device for power device packaging has a set of insertion holes on the support substrate at the top end of the stretching plate, which facilitates the fixing of the power device to be preheated, effectively prevents the power device from becoming loose and causing uneven preheating, and improves the preheating quality. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the preheating device structure for the power device package of this utility model.
[0018] Figure 2 This is a cross-sectional schematic diagram of the preheating device for the power device package of this utility model.
[0019] Figure 3 This is a cross-sectional schematic diagram of the preheating box of this utility model;
[0020] Figure 4 This is a schematic diagram of the top component of this utility model;
[0021] Figure 5 This is a cross-sectional view of the partition of this utility model;
[0022] Figure 6 This is a schematic diagram of the tensile plate component of this utility model.
[0023] In the diagram: 1. Preheating box; 2. Top component; 3. Control device; 4. Partition plate; 5. Tension plate; 6. Temperature sensor; 7. Connection hole one; 8. Slide groove; 9. Inner groove; 10. Fixing hole; 11. Feed inlet; 12. Mating port; 13. High-temperature heat insulation plate; 14. Connecting plate; 15. Power supply; 16. Infrared heating tube; 17. Connection hole two; 18. Heat-insulating sliding plate; 19. Handle; 20. Main body plate; 21. Support base plate; 22. Slider; 23. Insertion hole. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] Please see Figure 1-6 A preheating device for power device packaging includes a preheating box 1, a top component 2, a control device 3, a partition 4, and a stretching plate 5. The top component 2 is provided at the top end of the preheating box 1. The four corners of the top component 2 are fixedly connected to the preheating box 1 by adapter bolts. The preheating box 1 and the top component 2 form a hollow rectangular box. The control device 3 is provided at the top end of the top component 2. The partition 4 is provided inside the side wall of the preheating box 1. The stretching plate 5 is provided at the bottom end of the partition 4. The stretching plate 5 slides inside the lower end of the preheating box 1.
[0026] Furthermore, the top end of the preheating box 1 is provided with a rectangular extension plate, and each of the four corners of the extension plate is provided with a connecting hole 7. The side wall of the preheating box 1 is provided with a mating port 12, and the side wall of the preheating box 1 opposite to the mating port 12 is provided with an inner groove 9, and the inner side of the inner groove 9 is provided with a fixing hole 10. The bottom end of the inner groove 9 is provided with a feed port 11. The lower end of the interior of the preheating box 1 is provided with a set of axially symmetrical sliding grooves 8, and the sliding grooves 8 are perpendicular to the feed port 11. Each of the four corners of the bottom end of the preheating box 1 is provided with a support column. The inner groove 9 of the preheating box 1 facilitates the placement and operation of the partition 4, improves the internal sealing performance, and ensures the preservation of heat. The inner side wall of the preheating box 1 is polished to reduce heat reflection loss and improve the uniformity of heat radiation.
[0027] Furthermore, a high-temperature heat insulation plate 13 is welded to the top end of the top component 2, and a connecting plate 14 and a power supply 15 are provided at the top end of the high-temperature heat insulation plate 13. The connecting plate 14 and the power supply 15 are horizontally distributed, and the connecting plate 14 is vertically positioned. The vertical plate surface of the connecting plate 14 has four connecting holes that are fixedly connected to the control device 3. The bottom end of the top component 2 is provided with infrared heating tubes 16 that are evenly distributed. The high-temperature heat insulation plate 13 at the top of the top component 2 effectively ensures the temperature stability of the control device 3 and the power supply 15 and prevents the explosion due to excessive temperature. The infrared heating tubes 16 can quickly generate high-intensity infrared radiation heat, which directly acts on the fixed power device to be preheated, so that the surface and interior of the device are rapidly heated.
[0028] Furthermore, the partition 4 consists of two parts: a heat-insulating slide plate 18 and a handle 19. The heat-insulating slide plate 18 slides in cooperation with the inner groove 9. A hollow rectangular tube is provided at the center of the top end of the side wall of the heat-insulating slide plate 18. The rectangular tube has a two-step hole inside and is connected to the handle 19. The partition 4 effectively prevents the heat inside the preheating box 1 from overflowing from the feed inlet 11 and prevents heat waste.
[0029] Furthermore, the handle 19 has a T-shaped structure, and the end of the handle 19 corresponding to the heat insulation slide plate 18 is a long shaft, which is engaged with the fixing hole 10. The handle 19 facilitates the control of the partition 4 and improves the ease of operation.
[0030] Furthermore, the stretching plate 5 consists of two parts: a main plate 20 and a supporting base plate 21. The supporting base plate 21 is correspondingly snapped onto the top end of the main plate 20. The surface of the supporting base plate 21 has a set of insertion holes 23 that are evenly distributed. The bottom of the main plate 20, corresponding to the inner end of the preheating box 1, has two sliders 22 that are axially symmetrically distributed. The sliders 22 are correspondingly slidably connected with the sliding groove 8. The set of insertion holes 23 on the supporting base plate 21 facilitates the fixing of the power devices to be preheated, effectively preventing the power devices from becoming loose and causing uneven preheating, thus improving the preheating quality.
[0031] Working principle: The preheating device for power device packaging is correctly installed according to the diagram. Specifically, the bottom pins of the power device are inserted into the support substrate 21 of the stretching plate 5. A set of equally spaced insertion holes 23 on the support substrate 21 ensures uniform preheating of each power device, preventing uneven preheating caused by device accumulation. After the stretching plate 5 is pushed into the preheating chamber 1, the top component 2 at the top of the preheating chamber 1 begins to operate. A set of equally spaced infrared heating tubes 16 are located at the bottom of the preheating chamber 1. These infrared heating tubes 16 can quickly generate high-intensity infrared radiation heat, directly acting on the fixed power devices to be preheated. The device rapidly heats up its surface and interior. A temperature sensor 6 is installed on the side wall of the preheating chamber 1 to detect the internal temperature. The data from the temperature sensor 6 is fed back in real-time to the control device 3 on top of the top component 2. Operators can monitor the internal temperature of the preheating chamber 1 and adjust it via the control device 3 to ensure optimal preheating. After preheating, the stretching plate 5 is pulled out. To prevent heat loss from the preheating chamber 1, the handle 19 of the partition 4 is controlled, causing the heat-insulating sliding plate 18 of the partition 4 to seal the feed inlet 11 on the side wall of the preheating chamber 1. This effectively reduces waste and facilitates subsequent preheating, increasing the preheating rate.
[0032] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A preheating device for power device packaging, comprising a preheating chamber (1), a top component (2), a control device (3), a partition (4), and a stretching plate (5), characterized in that: The top end of the preheating box (1) is provided with a top component (2). The four corners of the top component (2) are fixedly connected to the preheating box (1) by adapter bolts. The preheating box (1) and the top component (2) form a hollow rectangular box. The top end of the top component (2) is provided with a control device (3). The side wall of the preheating box (1) is provided with a partition (4). The bottom end of the partition (4) is provided with a stretching plate (5). The stretching plate (5) slides inside the lower end of the preheating box (1).
2. The preheating device for power device packaging according to claim 1, characterized in that: The preheating box (1) has a rectangular extension plate at the top end, and the four corners of the extension plate are provided with connection holes (7). The side wall of the preheating box (1) is provided with a mating port (12), and the side wall of the preheating box (1) opposite to the mating port (12) is provided with an inner groove (9), and the inner side of the inner groove (9) is provided with a fixing hole (10). The bottom end of the inner groove (9) is provided with a feed inlet (11). The lower end of the preheating box (1) is provided with a set of axially symmetrical sliding grooves (8), and the sliding grooves (8) are perpendicular to the feed inlet (11). The four corners of the bottom end of the preheating box (1) are provided with support columns.
3. The preheating device for power device packaging according to claim 1, characterized in that: The top component (2) is welded with a high-temperature heat insulation plate (13), and the top end of the high-temperature heat insulation plate (13) is provided with a connecting plate (14) and a power supply (15). The connecting plate (14) and the power supply (15) are horizontally distributed, the connecting plate (14) is vertically positioned, and the vertical plate surface of the connecting plate (14) is provided with four connecting holes that are fixedly connected to the control device (3). The bottom end of the top component (2) is provided with infrared heating tubes (16) that are evenly distributed.
4. A preheating device for power device packaging according to claim 2, characterized in that: The partition (4) consists of two parts: a heat-insulating slide plate (18) and a handle (19). The heat-insulating slide plate (18) slides in cooperation with the inner groove (9). A hollow rectangular tube is provided at the center of the top end of the side wall of the heat-insulating slide plate (18). The rectangular tube has a two-step hole inside and is connected to the handle (19).
5. A preheating device for power device packaging according to claim 4, characterized in that: The handle (19) has a T-shaped structure, and the end of the handle (19) corresponding to the heat insulation slide plate (18) is a long shaft, which is engaged with the fixing hole (10).
6. A preheating device for power device packaging according to claim 1, characterized in that: The stretching plate (5) consists of two parts: a main plate (20) and a support base plate (21). The support base plate (21) is correspondingly snapped onto the top end of the main plate (20). The surface of the support base plate (21) is provided with a set of insertion holes (23) that are evenly distributed. The bottom of the main plate (20) is provided with two sliders (22) that are symmetrically distributed at the inside end of the preheating box (1). The sliders (22) are correspondingly slidably connected to the sliding groove (8).