Four-pin IGBT module pin shaping tool

Abstract

The utility model discloses a four-pin IGBT module pin shaping tool which comprises a module bottom plate, a plurality of IGBT module bodies are fixedly installed on the module bottom plate, a shaping tool body is arranged at the top of the module bottom plate, a plurality of first shaping holes are formed in the top of the shaping tool body, and a plurality of second shaping holes are formed in the top of the shaping tool body. A pin on the IGBT module body is arranged in the first shaping hole; according to the utility model, in the transportation process, the IGBT module body is easy to generate pin displacement, and in order to avoid the problem of IGBT breakdown caused by manual shaping in the later shaping process, the spacing of the plurality of first shaping holes in the shaping tool body is adjusted to be consistent with the spacing of the pins of the IGBT module body, so that the pins are aligned with the first shaping holes, and the IGBT module body is prevented from being broken down. The pins of the IGBT module body are inserted into the first shaping holes, so that the pins can be restored to preset positions, and subsequent butt joint with a PCB is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to IGBT module technical field especially relates to 4 foot IGBT module pin shaping frock. BACKGROUND

[0002] IGBT is the compound full control type voltage drive power semiconductor device that is composed of BJT (bipolar junction transistor) and MOS (insulated gate field effect transistor). It combines the advantages of BJT and MOSFET, such as small driving power, low saturation voltage drop, etc., while avoiding the shortcomings of complex BJT drive circuit and high power consumption, and high on-state voltage drop of MOSFET. IGBT has three electrodes: gate (G), collector (C) and emitter (E), which contains a MOSFET and a PNP bipolar transistor inside, connected by a specific circuit. This structure makes IGBT have both the high-speed switching characteristics of MOSFET and the low on-voltage characteristics of BJT.

[0003] IGBT is widely used in traditional industries such as industry, communication, computer, consumer electronics, automotive electronics, aerospace, national defense and military industry, as well as strategic emerging industries such as rail transit, new energy, smart grid, new energy vehicles. Especially in electric vehicles, IGBT is the core technology component of electric vehicles and charging piles, used in electric control system, vehicle-mounted air conditioning control system and charging pile. In smart grid, IGBT is widely used from power generation end to power consumption end, such as wind power generation, photovoltaic power generation, ultra-high voltage direct current transmission, power electronic transformer and household white electricity. In addition, IGBT is also the mainstream power electronic device of rail transit vehicle traction converter and various auxiliary converters

[0004] The existing IGBT module, as a kind of semiconductor device widely used in power electronics field, its pin shaping process in manufacturing process is particularly important, which affects the overall performance and reliability of IGBT. The traditional IGBT module is prone to pin displacement during transportation after leaving the factory, which makes the installation difficult in the later PCB assembly process, and manual shaping is needed again, increasing labor cost. In the shaping process, IGBT is easy to be broken down. Utility model content

[0005] The purpose of the present application is to provide a 4-pin IGBT module pin shaping frock to solve the above-mentioned deficiencies in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a 4-pin IGBT module pin shaping fixture, including a module base plate, on which multiple IGBT module bodies are fixedly mounted, and a shaping fixture body is provided on the top of the module base plate. The top of the shaping fixture body is provided with multiple first shaping holes, and the pins on the IGBT module bodies are arranged inside the first shaping holes.

[0007] As a further description of the above technical solution: the bottom of the shaping fixture body is provided with a plurality of tapered inlet holes, the plurality of tapered inlet holes are disposed at the bottom of a plurality of first shaping holes, and the first shaping holes are connected to the tapered inlet holes.

[0008] As a further description of the above technical solution: a shaping plate is provided on the top of the shaping fixture body, and a plurality of second shaping holes are provided on the shaping plate. The positions of the plurality of second shaping holes correspond to the positions of the plurality of first shaping holes. A lifting mechanism is provided between the shaping plate and the shaping fixture body.

[0009] As a further description of the above technical solution: two limiting rods are fixedly installed at the bottom of the shaping plate, and the two limiting rods slide in cooperation with the shaping fixture body.

[0010] As a further description of the above technical solution: the lifting mechanism includes two mounting slots, which are respectively opened on the top sides of the shaping fixture body. A ball screw is rotatably installed inside each of the two mounting slots, and a slider is slidably installed inside each of the two mounting slots. The two sliders are threadedly adapted to the two ball screws respectively. Connecting blocks are fixedly installed on both sides of the bottom of the shaping plate. A connecting rod is provided between the adjacent connecting block and the slider. One end of the connecting rod is rotatably connected to the side wall of the connecting block, and the other end of the connecting rod is rotatably connected to the side wall of the slider.

[0011] As a further description of the above technical solution: a connecting shaft is fixedly connected between the two ball screws, and the connecting shaft is rotatably disposed inside the forming fixture body, and a rotating rod is fixedly connected to one end of one of the ball screws away from the connecting shaft.

[0012] This invention provides a pin shaping fixture for 4-pin IGBT modules. It offers the following advantages: The tapered inlet guides the IGBT module pins, facilitating their entry into the first and second shaping holes, thus simplifying pin shaping. Furthermore, the addition of an extra shaping plate allows for multi-point shaping and correction of the IGBT module pins, improving the shaping effect.

[0013] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to be restrictive of the disclosure.

[0014] This document provides an overview of various implementations or examples of the technology described in this disclosure and is not intended to be comprehensive or disclose all features of the disclosed technology. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 The overall structure schematic diagram of the four-pin IGBT module pin shaping tool for the utility model is provided.

[0016] Fig. 2 The three-dimensional structure schematic diagram of the shaping tool body for the utility model is provided.

[0017] Fig. 3 The three-dimensional cross-sectional structure schematic diagram of the shaping tool body for the utility model is provided.

[0018] Fig. 4 The three-dimensional structure schematic diagram of another embodiment of the shaping tool body for the utility model is provided.

[0019] Fig. 5 The three-dimensional structure schematic diagram of another embodiment of the shaping tool body for the utility model is provided.

[0020] Fig. 6 The three-dimensional structure schematic diagram of another embodiment of the shaping tool body for the utility model is provided.

[0021] Legend:

[0022] 1, module bottom plate; 2, IGBT module body; 3, shaping tool body; 4, first shaping hole; 5, tapered hole; 6, shaping plate; 7, second shaping hole; 8, mounting groove; 9, ball screw; 10, sliding block; 11, connecting block; 12, connecting rod; 13, limiting rod; 14, rotating rod; 15, connecting shaft. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0024] Embodiment 1

[0025] Reference Figs. 1-34-pin IGBT module pin shaping tool, comprising a module base plate 1, a plurality of IGBT module bodies 2 are fixedly installed on the module base plate 1, a shaping tool body 3 is arranged on the top of the module base plate 1, a plurality of first shaping holes 4 are formed in the top of the shaping tool body 3, and the pins on the IGBT module body 2 are arranged in the first shaping holes 4; during transportation, the pins on the IGBT module body 2 are prone to displacement, and in the later shaping process, in order to avoid the problem of IGBT breakdown caused by artificial shaping, the device is used for shaping the pins on the IGBT module body 2 through the shaping tool body 3, the spacing of the plurality of first shaping holes 4 on the shaping tool body 3 is adjusted to be consistent with the spacing of the pins on the IGBT module body 2, the pins are aligned with the first shaping holes 4 during shaping of the pins on the IGBT module body 2, and the pins on the IGBT module body 2 are inserted into the first shaping holes 4, so that the pins can be restored to the preset position, and subsequent butt joint with the PCB board is facilitated.

[0026] As a preferred technical solution of the embodiment, a plurality of tapered holes 5 are formed in the bottom of the shaping tool body 3, the plurality of tapered holes 5 are arranged at the bottom of the plurality of first shaping holes 4, the first shaping holes 4 and the tapered holes 5 are in communication, and the pins on the IGBT module body 2 are guided through the tapered holes 5, so that the pins are guided into the first shaping holes 4 through the tapered holes 5 and shaped through the first shaping holes 4 on the shaping tool body 3.

[0027] Embodiment two

[0028] The embodiment is implemented on the basis of the above-mentioned embodiment one, and the above-mentioned embodiment one is referred to. Figs. 4-6 A shaping plate 6 is arranged on the top of the shaping tool body 3, a plurality of second shaping holes 7 are formed in the shaping plate 6, the positions of the plurality of second shaping holes 7 correspond to the positions of the plurality of first shaping holes 4, and a lifting mechanism is arranged between the shaping plate 6 and the shaping tool body 3; during shaping of the pins on the IGBT module body 2, the embodiment one shapes the pins on the IGBT module body 2 through the shaping tool body 3, which actually belongs to single-point shaping, and the shaping effect is not as good as two-point shaping, the first and last double-point shaping of the pins is realized through the first shaping holes 4 and the second shaping holes 7 by adding the shaping plate 6, and the shaping effect is better.

[0029] As a preferred technical solution of the embodiment, two limiting rods 13 are fixedly installed at the bottom of the shaping plate 6, and the two limiting rods 13 are in sliding cooperation with the shaping tool body 3; the limiting rods 13 are used for limiting the shaping plate 6, so that the shaping plate 6 and the shaping tool body 3 are in sliding cooperation, and the lifting sliding of the shaping plate 6 is assisted.

[0030] As the preferred technical scheme of the embodiment, the lifting mechanism comprises two mounting grooves 8, the two mounting grooves 8 are respectively arranged on the two sides of the top of the shaping tool body 3, a ball screw 9 is rotatably arranged in each of the two mounting grooves 8, a sliding block 10 is slidably arranged in each of the two mounting grooves 8, the two sliding blocks 10 are threadedly connected with the two ball screws 9 respectively, a connecting block 11 is fixedly arranged on the bottom of the shaping plate 6, a connecting rod 12 is arranged between the connecting block 11 and the sliding block 10, one end of the connecting rod 12 is rotatably connected with the side wall of the connecting block 11, and the other end of the connecting rod 12 is rotatably connected with the side wall of the sliding block 10; the ball screw 9 is rotated to drive the sliding block 10 to move in the mounting groove 8 through thread transmission, and when the sliding block 10 moves towards the connecting block 11 under the condition that the shaping plate 6 is limited by the limiting rod 13, the shaping plate 6 is lifted up, so that the shaping plate 6 cooperates with the shaping tool body 3 to perform double-point shaping on the pin on the IGBT module body 2.

[0031] As the preferred technical scheme of the embodiment, the two ball screws 9 are fixedly connected with a connecting shaft 15, the connecting shaft 15 is rotatably arranged in the shaping tool body 3, and one end of one of the ball screws 9 away from the connecting shaft 15 is fixedly connected with a rotating rod 14; the two ball screws 9 are driven to rotate by the rotating rod 14 and the connecting shaft 15, the sliding blocks 10 are driven to move by thread transmission, and the connecting rod 12 lifts up the shaping plate 6.

[0032] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

A 1.4-pin IGBT module pin shaping fixture, including a module base plate (1), characterized in that: Multiple IGBT module bodies (2) are fixedly installed on the module base plate (1). A shaping fixture body (3) is provided on the top of the module base plate (1). Multiple first shaping holes (4) are opened on the top of the shaping fixture body (3). The pins on the IGBT module body (2) are located inside the first shaping holes (4). The bottom of the shaping fixture body (3) is provided with a plurality of tapered inlet holes (5), and the plurality of tapered inlet holes (5) are provided at the bottom of a plurality of first shaping holes (4), and the first shaping holes (4) are connected to the tapered inlet holes (5); The top of the shaping fixture body (3) is provided with a shaping plate (6), and the shaping plate (6) is provided with a plurality of second shaping holes (7). The positions of the plurality of second shaping holes (7) correspond to the positions of the plurality of first shaping holes (4). A lifting mechanism is provided between the shaping plate (6) and the shaping fixture body (3). The lifting mechanism includes two mounting slots (8), which are respectively opened on the top sides of the shaping fixture body (3). A ball screw (9) is rotatably installed inside each of the two mounting slots (8), and a slider (10) is slidably installed inside each of the two mounting slots (8). The two sliders (10) are threadedly adapted to the two ball screws (9). Connecting blocks (11) are fixedly installed on both sides of the bottom of the shaping plate (6). A connecting rod (12) is provided between the adjacent connecting blocks (11) and the sliders (10). One end of the connecting rod (12) is rotatably connected to the side wall of the connecting block (11), and the other end of the connecting rod (12) is rotatably connected to the side wall of the slider (10).

2. The pin shaping fixture for a 4-pin IGBT module according to claim 1, characterized in that, Two limiting rods (13) are fixedly installed at the bottom of the shaping plate (6), and the two limiting rods (13) slide in cooperation with the shaping fixture body (3).

3. The pin shaping fixture for a 4-pin IGBT module according to claim 1, characterized in that, A connecting shaft (15) is fixedly connected between the two ball screws (9). The connecting shaft (15) is rotatably disposed inside the shaping fixture body (3). A rotating rod (14) is fixedly connected to one end of one of the ball screws (9) away from the connecting shaft (15).

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