A power module frame welding device

Abstract

The invention discloses a power module frame welding device, which belongs to the technical field of module frame welding packaging. The device comprises a drying box body, the bottom of which is penetrated, and a supporting base plate is installed at the bottom of the drying box body, and four sliding rod bodies are slidably connected between the upper end of the supporting base plate and the top of the inner side of the drying box body, and each sliding rod body is fixedly connected with a lower clamping block on the outer wall near the bottom, and each sliding rod body is slidably connected with an upper clamping block on the outer wall near the upper end, and the second bevel gear is driven to rotate by the rotation of the first driving motor in the driving assembly, and the meshing of the second bevel gear and each first bevel gear makes each first bevel gear drive the driving screw to rotate, so that each lower clamping block and the upper clamping block move inward at the same time to clamp the upper frame and the lower frame, and then cooperate with the electric telescopic rod in the clamping assembly to extend and drive each upper clamping block to move downward through the connecting block, the storage plate and the extension plate.

Description

Technical Field

[0001] The invention belongs to the technical field of module frame welding and packaging, and in particular relates to a power module frame welding device. Background Art

[0002] Power electronic devices are packaged into modules according to certain functional combinations. Intelligent power modules are advanced hybrid integrated power components with IGBT as the core, consisting of high-speed, low-power tube core (IGBT) and optimized gate drive circuit, as well as fast protection circuit. The IGBT tube core in IPM is selected to be high-speed, and the drive circuit is close to the IGBT, with a small drive delay, so the IPM has a fast switching speed and low loss. The IPM integrates a real-time detection circuit that can continuously detect the IGBT current and temperature. When a serious overload or even a direct short circuit occurs, and the temperature is overheated, the IGBT will be controlled to be softly shut down, and a fault signal will be issued at the same time. In addition, the IPM also has functions such as bridge arm tube interlocking and drive power undervoltage protection. Although the price of IPM is higher, due to the integrated drive and protection functions, the IPM has the advantages of compact structure, high reliability, and easy use compared with a simple IGBT.

[0003] During the production process, the power module needs to be welded and packaged. The power module is placed on the lower frame, welding glue is applied on the top of the lower frame, and then the upper frame is fitted with the lower frame. After the welding glue solidifies, the welding and packaging of the power module is completed. For example, Chinese utility model patent CN216902825U discloses an intelligent power module packaging device, including an oven and a pressing device. The oven can accommodate the pressing device. The pressing device includes a bottom plate and a top plate. The four corners of the bottom plate are provided with adjusting screws, and the four corners of the top plate are provided with first through holes. The adjusting screw matches the first through holes. The adjusting screw is provided with a first nut and a second nut. The first nut is placed at the lower end of the top plate, and the second nut is placed at the upper end of the top plate. A positioning mold is provided on the bottom plate, and a plurality of positioning holes are provided on the positioning mold. A plurality of pressure molds are provided on the top plate, and the pressure molds correspond to the positioning holes.

[0004] Although the above-mentioned prior art can stably press-fit the intelligent power module, the upper shell of the package needs to be manually fitted with the lower shell. Since there is a rubber ring sticker on the lower shell, once the fitting fails, the rubber ring sticker cannot be used, thereby reducing the packaging efficiency. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In order to solve the problem that the upper shell of the package needs to be manually attached to the lower shell in the above background technology, and since there is a rubber ring sticker on the lower shell, once the attachment fails, the rubber ring sticker cannot be used, thereby reducing the packaging efficiency, the present invention adopts the following technical solution.

[0007] The top of the inner side of the drying box body is provided with four first sliding grooves, and the upper end of the positioning boss is provided with four second sliding grooves corresponding to the position of the first sliding grooves, and each relative first sliding groove and the second sliding groove are slidably connected with a sliding rod body inside, and each sliding rod body is fixedly connected with a lower clamping block on the outer wall near the bottom, and each sliding rod body is slidably connected with an upper clamping block on the outer wall near the upper end, and a lifting assembly is installed on the upper end of the drying box body, and the lifting assembly controls each upper clamping block to move downward, and a driving assembly is installed inside the supporting bottom plate and the positioning boss, and the driving assembly drives each sliding rod body to move inward at the same time, and the interior of the drying box body is slidably connected with the supporting plate body, and the outer wall of the drying box body is installed with a moving assembly, and the moving assembly drives the supporting plate body to move.

[0008] Preferably, the outer wall of each upper clamping block is fixedly connected to a storage plate, the interior of each storage plate is slidably connected to an extension plate, each extension plate extends toward the center of the drying box, and the opposite end of each extension plate is fixedly connected to a connecting block, which is detachably connected to the clamping assembly.

[0009] Preferably, a pressure sensor is detachably connected between the connecting block and the pressing assembly, and the pressure sensor detects the pressure of the pressing assembly.

[0010] Preferably, a hot air blower is embedded in an inner wall of one side of the drying box body, and a sealing door panel is rotatably connected to the outside of the drying box body.

[0011] Preferably, a positioning cross groove is provided at the upper end of the supporting plate body.

[0012] Preferably, the driving assembly includes a first driving motor, a second bevel gear, a first bevel gear and a driving screw, each second sliding groove is internally rotatably connected to a driving screw, each driving screw is threadedly connected to each sliding rod body, a cavity is provided at the center of the support base plate and the positioning boss, one end of each driving screw close to the cavity is inserted into the cavity, and the insertion end of each driving screw is detachably connected to the first bevel gear, the inner bottom of the cavity is detachably connected to the first driving motor, the rotating end of the first driving motor is detachably connected to the second bevel gear, the second bevel gear is meshed with each first bevel gear, the rotation of the first driving motor drives the second bevel gear to rotate, and the meshing of the second bevel gear with each first bevel gear enables each first bevel gear to drive the driving screw to rotate.

[0013] Preferably, the pressing assembly comprises an electric telescopic rod, the upper end of the drying box is detachably connected to the electric telescopic rod, the telescopic end of the electric telescopic rod passes through the drying box, and the telescopic end of the electric telescopic rod is detachably connected to the pressure sensor.

[0014] Preferably, the moving assembly includes a second driving motor and a driving gear. The rotation of the second driving motor drives the driving gear to rotate, and the engagement between the driving gear and the meshing tooth groove controls the movement of the support plate inside the drying box.

[0015] Preferably, a hollow plate body is fixedly connected to the inner wall of the drying box body, and both sides of the hollow plate body penetrate through the drying box body, and the supporting plate body is slidably connected to the inside of the hollow plate body.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The second bevel gear is driven to rotate by the rotation of the first drive motor in the drive assembly, and each first bevel gear is meshed with the second bevel gear to make each first bevel gear drive the drive screw to rotate, so that each lower clamping block and the upper clamping block move inward at the same time to clamp the upper frame and the lower frame, and then the electric telescopic rod in the clamping assembly is extended to drive each upper clamping block to move downward through the connecting block, the storage plate and the extension plate, so that the upper frame and the lower frame can be accurately fitted for welding.

[0018] 2. The pressure sensor can detect the pressure, and when the pressure reaches a threshold, the extension of the electric telescopic rod is stopped, thereby protecting the upper frame from cracking and damage.

[0019] 3. The second driving motor in the mobile device is rotated to drive the driving gear to rotate, so that the support plate body can be controlled to move inside the hollow plate body through the engagement between the driving gear and the meshing tooth groove, and the upper frame is placed on the upper end of the support plate body. After the upper shell is clamped, the support plate body is moved away from the bottom of the upper shell through the mobile device.

[0020] 4. Through the cross groove, when placing the shell, the center of the shell is located at the center of the positioning cross groove, and the centers of the four edges of the upper frame are aligned with the positioning cross groove, so that the upper frame can be placed more accurately.

[0021] 5. The hot air blown by the hot air blower can solidify the adhesive ring sticker. The outside of the drying box is rotatably connected with a sealed door panel. The sealed door panel is closed to insulate the inside, so that the adhesive ring sticker solidifies faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a power module frame welding device in the present invention;

[0023] Figure 2 This is a schematic diagram of the drying box structure in the present invention;

[0024] Figure 3 This is a schematic diagram of the supporting base structure in the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the driving component in the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the upper clamping block in the present invention;

[0027] Figure 6 This is a schematic diagram of the bottom structure of the support plate in the present invention;

[0028] Figure 7 It is a schematic diagram of the supporting plate structure in the present invention.

[0029] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0030] 100, drying box body; 101, sealing door panel; 102, first sliding groove; 103, hollow plate body;

[0031] 104. Hot air blower;

[0032] 200, supporting bottom plate; 201, lower clamping block; 202, sliding rod body; 203, second sliding groove;

[0033] 204, driving screw; 205, positioning boss; 206, first bevel gear;

[0034] 207, second bevel gear; 208, first drive motor;

[0035] 300, upper clamping block; 301, electric telescopic rod; 302, pressure sensor; 303, connecting block;

[0036] 304, storage plate; 305, extension plate;

[0037] 400, support plate; 401, meshing tooth groove; 402, second drive motor; 403, drive gear;

[0038] 404. Positioning cross groove. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0041] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0042] like Figure 1 As shown, it is a schematic diagram of the structure of a power module frame welding device in a preferred embodiment of the present invention. The power module frame welding device in this embodiment includes a drying box 100, the bottom of the drying box 100 is penetrated, and a supporting bottom plate 200 is installed at the bottom of the drying box 100, and four sliding rods 202 are slidably connected between the upper end of the supporting bottom plate 200 and the inner top of the drying box 100, and each sliding rod 202 is fixedly connected to a lower clamping block 201 on the outer wall near the bottom, and each sliding rod 202 is slidably connected to an upper clamping block 300 on the outer wall near the upper end, and a support plate 400 is slidably connected inside the drying box 100. In this embodiment, the lower frame is placed between multiple lower clamping blocks 201, and the upper frame is placed on the upper end of the support plate body 400. Each lower clamping block 201 moves inward to drive each lower clamping block 201 and the upper clamping block 300 to move and clamp the upper frame and the lower frame. After clamping is completed, the support plate body 400 moves away from the bottom of the upper frame, and the rubber ring is installed on the lower frame. Each upper clamping block 300 moves downward to fit the upper frame with the lower frame. The upper clamping block 300 and the lower clamping block 201 are on the same vertical line, so that the upper frame and the lower frame can be accurately fitted, so that incomplete fitting will not occur, resulting in unusable conditions.

[0043] like Figure 2 as well as Figure 3 As shown, it is a schematic diagram of the drying box structure and a schematic diagram of the supporting bottom plate structure in this embodiment. Four first sliding grooves 102 are arranged on the inner top of the drying box 100. The upper end of the supporting bottom plate 200 is fixedly connected with a positioning boss 205 inserted into the bottom of the drying box 100. The upper end of the positioning boss 205 is provided with four second sliding grooves 203 corresponding to the positions of the first sliding grooves 102. The upper and lower ends of the four sliding rod bodies 202 are respectively slidably connected with each first sliding groove 102 and the second sliding groove 203. The interior of each second sliding groove 203 is rotatably connected with a driving screw 204, and each driving screw 204 is threadedly connected to each sliding rod body 202. In this embodiment, each driving screw 204 rotates to drive each sliding rod body 202 to move inward at the same time, thereby cooperating with the lower clamping block 201 and the upper clamping block 300 to clamp the upper frame and the lower frame.

[0044] like Figure 4 As shown, it is a schematic diagram of the drive component structure in this embodiment, a cavity is provided at the center of the support base plate 200 and the positioning boss 205, and one end of each drive screw 204 close to the cavity is inserted into the cavity, and the insertion end of each drive screw 204 is detachably connected to the first bevel gear 206, and the inner bottom of the cavity is detachably connected to the first drive motor 208, and the rotating end of the first drive motor 208 is detachably connected to the second bevel gear 207, and the second bevel gear 207 is meshed with each first bevel gear 206. In this embodiment, the second bevel gear 207 is driven to rotate by the rotation of the first drive motor 208, and the meshing of the second bevel gear 207 with each first bevel gear 206 makes each first bevel gear 206 drive the drive screw 204 to rotate, so that the upper frame and the lower frame can be clamped.

[0045] It is worth noting that the above-mentioned first drive motor 208, second bevel gear 207, first bevel gear 206 and drive screw 204 are the drive components in this embodiment, and the drive components include but are not limited to the first drive motor 208, second bevel gear 207, first bevel gear 206 and drive screw 204. As long as it is a component that can make each sliding rod body 202 move inward at the same time, it can be applied to this embodiment.

[0046] like Figure 5As shown, it is a schematic diagram of the upper clamping block structure in this embodiment, the outer wall of each upper clamping block 300 is fixedly connected with a storage plate 304, and the interior of each storage plate 304 is slidably connected with an extension plate 305, and each extension plate 305 extends toward the center of the drying box body 100, and the upper end of the drying box body 100 is detachably connected with an electric telescopic rod 301, and the telescopic end of the electric telescopic rod 301 passes through the drying box body 100, and the end of the telescopic end of the electric telescopic rod 301 is detachably connected with a connecting block 303, and the connecting block 303 is fixedly connected to one end of each extension plate 305. In this embodiment, the extension plate 305 and the storage plate 304 can be used to control each upper clamping block 300 to move upward or downward on the outer wall of the sliding rod body 202 through the extension plate 305 and the storage plate 304 through the extension and contraction of the extension plate 305 and the storage plate 304, so that the storage plate 304 and the extension plate 305 of each sliding rod body 202 can be adaptively extended and contracted when moving.

[0047] It is worth noting that the above-mentioned electric telescopic rod 301 is a clamping component in this embodiment. The clamping component includes but is not limited to the electric telescopic rod 301. Any component that can move the connecting block 303 upward or downward can be applied to this embodiment.

[0048] like Figure 5 As shown, in order to prevent the upper frame from being broken due to excessive pressure on the electric telescopic rod 301, in this embodiment, a pressure sensor 302 is detachably connected between the electric telescopic rod 301 and the connecting block 303. The pressure sensor 302 can detect pressure and stop the extension of the electric telescopic rod 301 when the pressure reaches a threshold, thereby protecting the upper frame from being broken and damaged.

[0049] like Figure 2 , Figure 6 as well as Figure 7 As shown, it is a schematic diagram of the drying box structure, a schematic diagram of the bottom structure of the support plate body, and a schematic diagram of the support plate body structure in this embodiment. The inner wall of the drying box body 100 is fixedly connected with a hollow plate body 103, and both sides of the hollow plate body 103 pass through and the penetration passes through the drying box body 100. The support plate body 400 is slidably connected to the inside of the hollow plate body 103. The bottom of the support plate body 400 is provided with a plurality of meshing tooth grooves 401. The outer wall of the drying box body 100 is detachably connected with a second drive motor 402. The second drive motor 402 is connected to the outer wall of the drying box body 100. The rotating end of the driving motor 402 is detachably connected to a driving gear 403, and the driving gear 403 is engaged with the meshing tooth groove 401. In this embodiment, the driving gear 403 is driven to rotate by the rotation of the second driving motor 402, so that the support plate body 400 can be controlled to move inside the hollow plate body 103 through the engagement of the driving gear 403 with the meshing tooth groove 401, so that the support plate body 400 can leave the bottom of the upper frame after the upper frame is clamped, thereby not blocking the falling path of the upper frame.

[0050] It is worth noting that the above-mentioned second drive motor 402 and drive gear 403 are moving components in this embodiment, and the moving components include but are not limited to the above-mentioned second drive motor 402 and drive gear 403. As long as it is a component that can enable the support plate body 400 to move inside the hollow plate body 103, it can be applied to this embodiment.

[0051] like Figure 7 As shown, in order to place the upper frame more accurately, in this embodiment, a positioning cross groove 404 is provided at the upper end of the support plate 400. When placing the shell, the center of the shell is located at the center of the positioning cross groove 404, and the centers of the four edges of the upper frame are aligned with the positioning cross groove 404, so that the upper frame can be placed more accurately.

[0052] like Figure 2 As shown, in order to enable the upper frame and the lower frame to be welded together more quickly, in this embodiment, a hot air blower 104 is embedded in the inner wall of one side of the drying box 100. The hot air blown by the hot air blower 104 can solidify the adhesive ring sticker. The outside of the drying box 100 is rotatably connected to a sealing door panel 101, and the sealing door panel 101 is closed to insulate the interior.

[0053] In summary, the specific use of this embodiment is as follows: first, the second driving motor 402 in the moving device drives the driving gear 403 to rotate, so that the support plate body 400 can be controlled to move inside the hollow plate body 103 through the engagement of the driving gear 403 with the meshing tooth groove 401, and the upper frame is placed on the upper end of the support plate body 400. When placing the shell, the center of the shell is located at the center of the positioning cross groove 404, and the centers of the four edges of the upper frame are aligned with the positioning cross groove 404, so that the upper frame can be placed more accurately, and the lower frame is placed at the center of the upper end of the positioning boss 205 and the power module is installed on the lower frame, and the first driving motor 208 in the driving assembly is started to rotate to drive the second bevel gear 207 to rotate, and the second bevel gear 207 is driven by the second bevel gear 207. The meshing of the wheel 207 with each first bevel gear 206 enables each first bevel gear 206 to drive the driving screw 204 to rotate, so that each lower clamping block 201 and the upper clamping block 300 move inward at the same time to clamp the upper frame and the lower frame. During the movement, each storage plate 304 and the extension plate 305 shrink adaptively to place the rubber ring on the lower frame, and the electric telescopic rod 301 in the clamping assembly is started to extend to cooperate with the storage plate 304 and the extension plate 305 through the connecting block 303 to drive each upper clamping block 300 to move downward, so that the upper frame and the lower frame can be accurately fitted together for welding. After fitting, the sealing door panel 101 is closed and the hot air blower 104 is started to blow hot air, so that the rubber ring can solidify faster, completing the welding of the power module frame.

[0054] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection determined by the claims submitted for the present invention.

Claims

1. A power module frame welding device, comprising a drying box (100), the bottom of the drying box (100) is penetrated, and a supporting bottom plate (200) is installed at the bottom of the drying box (100), characterized in that: The upper end of the supporting bottom plate (200) is fixedly connected with a positioning boss (205) inserted into the bottom through-hole of the drying box body (100); the inner top of the drying box body (100) is provided with four first sliding grooves (102); the upper end of the positioning boss (205) is provided with four second sliding grooves (203) corresponding to the positions of the first sliding grooves (102); the interior of each of the first sliding grooves (102) and the second sliding groove (203) relative to each other is slidably connected with a sliding rod body (202); the outer wall of each sliding rod body (202) close to the bottom is fixedly connected with a lower clamping block (201) , an upper clamping block (300) is slidably connected to the outer wall near the upper end of each sliding rod body (202), a lifting assembly is installed at the upper end of the drying box body (100), and the lifting assembly controls each upper clamping block (300) to move downward, a driving assembly is installed inside the supporting bottom plate (200) and the positioning boss (205), and the driving assembly drives each sliding rod body (202) to move inward at the same time, and the interior of the drying box body (100) is slidably connected to the supporting plate body (400), and a moving assembly is installed on the outer wall of the drying box body (100), and the moving assembly drives the supporting plate body (400) to move; The outer wall of each upper clamping block (300) is fixedly connected to a receiving plate (304), the interior of each receiving plate (304) is slidably connected to a protruding plate (305), each protruding plate (305) extends toward the center of the drying box (100), and the opposite end of each protruding plate (305) is fixedly connected to a connecting block (303), and the connecting block (303) is detachably connected to the pressing assembly; The driving assembly comprises a first driving motor (208), a second bevel gear (207), a first bevel gear (206) and a driving screw (204); the interior of each second sliding groove (203) is rotatably connected to a driving screw (204); each driving screw (204) is threadedly connected to each sliding rod body (202); a cavity is provided at the center of the supporting base plate (200) and the positioning boss (205); an end of each driving screw (204) close to the cavity is inserted into the cavity, and the insertion end of each driving screw (204) is detachably connected to the inner side of the cavity. A first bevel gear (206) is provided, and a first drive motor (208) is detachably connected to the inner bottom of the cavity. A second bevel gear (207) is detachably connected to the rotating end of the first drive motor (208). The second bevel gear (207) is meshed with each first bevel gear (206). The first drive motor (208) rotates to drive the second bevel gear (207) to rotate. Through the meshing of the second bevel gear (207) with each first bevel gear (206), each first bevel gear (206) drives the drive screw (204) to rotate.

2. The power module frame welding device according to claim 1, characterized in that: A pressure sensor (302) is detachably connected between the connection block (303) and the pressing assembly, and the pressure sensor (302) detects the pressure of the pressing assembly.

3. The power module frame welding device according to claim 2, characterized in that: A hot air blower (104) is embedded in an inner wall of one side of the drying box body (100), and a sealing door panel (101) is rotatably connected to the outside of the drying box body (100).

4. The power module frame welding device according to claim 3, characterized in that: A positioning cross groove (404) is provided at the upper end of the supporting plate body (400).

5. The power module frame welding device according to claim 1, characterized in that: The pressing assembly comprises an electric telescopic rod (301), the upper end of the drying box (100) is detachably connected to the electric telescopic rod (301), the telescopic end of the electric telescopic rod (301) passes through the drying box (100), and the telescopic end of the electric telescopic rod (301) is detachably connected to the pressure sensor (302).

6. The power module frame welding device according to claim 5, characterized in that: The moving assembly comprises a second driving motor (402) and a driving gear (403); the second driving motor (402) rotates to drive the driving gear (403) to rotate, and the support plate (400) is controlled to move inside the drying box (100) through the engagement of the driving gear (403) with the meshing tooth groove (401).

7. The power module frame welding device according to claim 6, characterized in that: The inner wall of the drying box body (100) is fixedly connected with a hollow plate body (103), both sides of the hollow plate body (103) penetrate through the drying box body (100), and the penetration point penetrates through the drying box body (100), and the support plate body (400) is slidably connected inside the hollow plate body (103).

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