Packaging bonding pad of igbt tube

Abstract

The utility model relates to packaging of an igbt tube, in particular to a packaging bonding pad of the igbt tube. The utility model provides a packaging bonding pad of an igbt tube, which is convenient for rapid maintenance of a chip. The packaging bonding pad of the igbt tube comprises a bonding pad I, a wire I, a soldering lug I, a chip, a bonding pad II, a soldering lug II and a wire II, the wire I is connected to the bonding pad I, placing grooves I which are uniformly distributed at intervals are formed in the bonding pad I, the soldering lug I is placed in the placing grooves I, and the chip is connected to the chip. The welding disc I is internally provided with placing grooves II which are uniformly distributed at intervals, the welding disc II is internally provided with welding sheets II, the welding disc II is connected with a wire II, and the wire II is electrically connected with the welding sheets II. The chip is welded on the welding sheets I. The placing grooves II which are uniformly distributed at intervals are arranged in the welding disc II, the welding sheets II are placed in the placing grooves II, and the welding disc II is connected with the wire II which is electrically connected with the welding sheets II. And by arranging a push rod, a wedge-shaped block, a spring and the like, the welding disc II can be quickly detached from the welding disc I, so that the chip can be conveniently overhauled.

Description

Technical Field

[0001] The utility model relates to an IGBT tube package, in particular to an IGBT tube package welding plate. Background Art

[0002] The IGBT tube is a modular semiconductor product packaged through a specific circuit bridge. It has the characteristics of self-shutdown, energy saving, easy installation and maintenance, and stable heat dissipation. According to the packaging process, the IGBT module can be mainly divided into two types: welding type and crimping type. Generally, welding discs are used to package IGBT tubes.

[0003] The patent with the patent authorization announcement number CN219497788U discloses a single-tube IGBT package welding pad, including a first welding pad and a second welding pad, one side of the first welding pad is provided with a first receiving groove distributed in a rectangular array, and one side of the second welding pad is provided with a second receiving groove distributed in a rectangular array, and the second receiving groove is aligned with the first receiving groove. Although the above patent can facilitate the alignment of the welding pads by setting sliders, mounting grooves, connecting rods, connecting rods and through grooves, etc., when closing the pads, a welding furnace is used to weld the first welding pad and the second welding pad together, resulting in the need to use a cutting tool to separate the first welding pad and the second welding pad when repairing the chip later, thereby increasing the difficulty of chip repair.

[0004] Therefore, there is a particular need for a packaging welding pad for an IGBT tube that is convenient for rapid repair of the chip to solve the problems existing in the prior art. Utility Model Content

[0005] In order to overcome the disadvantage that the prior art patent uses a welding furnace to weld the first welding pad and the second welding pad together, which results in the need to use a cutting tool to separate the first welding pad and the second welding pad when the chip is repaired later, thereby increasing the difficulty of chip repair, the utility model provides an IGBT tube packaging welding pad that is convenient for quick chip repair.

[0006] The utility model is realized by the following technical means: a packaging welding plate of an IGBT tube, comprising a welding plate I, a wire I, a welding piece I, a chip, a welding plate II, a welding piece II and a wire II, the welding plate I is connected to the wire I, the welding plate I is provided with placement grooves I evenly spaced, the placement grooves I are provided with welding pieces I, the wire I is electrically connected to the welding piece I, the welding piece I is welded with a chip, the welding plate II is provided with placement grooves II evenly spaced, the placement grooves II are provided with welding pieces II, the welding plate II is connected to the wire II The wire II is electrically connected to the welding piece II, a chip is welded on the welding piece II, and also includes a wedge block, a spring, a push rod and a fixed rod. The welding disk I is slidably connected with a wedge block, a spring for auxiliary resetting is connected between the wedge block and the welding disk I, a slot is provided inside the welding disk II, the wedge block is engaged with the slot, a fixed rod is fixedly connected to the front of the welding disk II, a push rod is slidably connected to the fixed rod, the push rod is in contact with the wedge block, and by moving the push rod backward, the wedge block is squeezed to move backward and disengage from the slot.

[0007] As a further preferred embodiment, a sealing gasket is provided on the contacting side of the welding pad I and the welding pad II.

[0008] As a further preferred solution, the wedge block is provided with an inclined surface to facilitate pushing.

[0009] As a further preferred solution, a rubber sleeve is provided on the fixing rod to increase friction.

[0010] As a further preferred solution, it also includes a limiting block, and the limiting block is fixedly connected to the placement groove I and the placement groove II.

[0011] As a further preferred solution, the limit block is made of silicone.

[0012] As a further preferred solution, a positioning rod is further included. A positioning rod for auxiliary positioning is fixedly connected to the welding plate I, and the positioning rod is clamped with the welding plate II.

[0013] As a further preferred embodiment, it further comprises guide rods, the inside of the welding plate I is fixedly connected with guide rods distributed on the left and right, and the wedge block is slidably connected to the guide rods.

[0014] As a further preferred solution, there is greater friction between the wedge block and the guide rod.

[0015] As a further preferred solution, fixing holes for connecting bolts are provided on both the welding plate I and the welding plate II.

[0016] From the above description of the structure of the utility model, it can be seen that the design starting point, concept and advantages of the utility model are: 1. By setting a push rod, a wedge block and a spring, the welding plate II can be quickly removed from the welding plate I, so as to facilitate the inspection and maintenance of the chip.

[0017] 2. By setting the positioning rod to engage with welding plate II, the effect of accurately aligning welding plate II and welding plate I can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0019] Figure 2 It is a schematic diagram of the three-dimensional cross-sectional structure of the welding piece II, the wire II and the welding plate II of the utility model.

[0020] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of the limit block, the positioning rod and the wedge block of the utility model.

[0021] Figure 4 It is a three-dimensional cross-sectional structural schematic diagram of the welding plate II, the push rod and the fixing rod of the utility model.

[0022] Wherein: 1. welding plate Ⅰ, 2. wire Ⅰ, 3. welding piece Ⅰ, 4. placement slot Ⅰ, 5. chip, 6. placement slot Ⅱ, 7. welding piece Ⅱ, 8. wire Ⅱ, 9. welding plate Ⅱ, 10. limit block, 11. positioning rod, 12. wedge block, 13. spring, 14. guide rod, 15. slot, 16. push rod, 17. fixing rod, 18. fixing hole. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with specific embodiments. It should also be noted that, unless otherwise clearly specified and limited, terms such as: setting, installing, connecting, and connecting should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Embodiment 1: A packaging welding plate of an IGBT tube, see Figure 1-Figure 4As shown, it includes a welding plate Ⅰ1, a wire Ⅰ2, a welding piece Ⅰ3, a chip 5, a welding plate Ⅱ9, a welding piece Ⅱ7, a wire Ⅱ8 and a limit block 10, the welding plate Ⅰ1 is connected to the wire Ⅰ2, the welding plate Ⅰ1 is provided with evenly spaced placement grooves Ⅰ4, the placement grooves Ⅰ4 are provided with welding pieces Ⅰ3, the wire Ⅰ2 is electrically connected to the welding piece Ⅰ3, the chip 5 is welded to the welding piece Ⅰ3, the welding plate Ⅱ9 is provided with evenly spaced placement grooves Ⅱ6, the contacting side of the welding plate Ⅰ1 and the welding plate Ⅱ9 is provided with a sealing gasket, the placement grooves Ⅱ6 are provided with welding pieces Ⅱ7, the welding plate Ⅱ9 is connected to the wire Ⅱ8, the wire Ⅱ8 is electrically connected to the welding piece Ⅱ7, the chip 5 is welded to the welding piece Ⅱ7, the placement grooves Ⅰ4 and the placement grooves Ⅱ6 are connected to the limit block 10 by welding, the limit block 10 is made of silicone, and the welding plate Ⅰ1 and the welding plate Ⅱ9 are provided with fixings for connecting bolts. Hole 18, also includes a wedge block 12, a spring 13, a guide rod 14, a push rod 16 and a fixed rod 17. The wedge block 12 is slidably connected inside the welding disk I1, and a slope is provided on the wedge block 12 for easy pushing. A spring 13 for auxiliary resetting is connected between the wedge block 12 and the welding disk I1. The inside of the welding disk I1 is connected to the left and right guide rods 14 by welding. The wedge block 12 is slidably connected to the guide rod 14, and there is a large friction between the wedge block 12 and the guide rod 14. A slot 15 is provided inside the welding disk II9, and the wedge block 12 is engaged with the slot 15. The front part of the welding disk II9 is ​​connected to the fixed rod 17 by welding. A rubber sleeve is provided on the fixed rod 17 for increasing friction. A push rod 16 is slidably connected to the fixed rod 17, and the push rod 16 contacts the wedge block 12. By moving the push rod 16 backward, the wedge block 12 is squeezed to move backward and disengage from the slot 15.

[0025] First, the staff pushes the push rod 16 backward to squeeze the wedge block 12 to move backward and disengage from the card slot 15, and the spring 13 is compressed. Then the welding plate Ⅱ9 is removed from the welding plate Ⅰ1, and the spring 13 returns to its original state to move the wedge block 12 forward. Then the limit block 10 is moved to place the chip 5 in the placement slot Ⅰ4 and the placement slot Ⅱ6 in turn, so that the chip 5 contacts the welding piece Ⅰ3 and the welding piece Ⅱ7. After placing the chip 5, the staff releases the limit block 10, and the limit block 10 limits the chip 5 in the placement slot Ⅰ4 and the placement slot Ⅱ6, and then the staff The operator uses tools to weld chip 5 to welding piece Ⅰ3 and welding piece Ⅱ7. After welding is completed, the operator squeezes wedge block 12 inward again, and spring 13 is compressed accordingly, and welding plate Ⅱ9 is put back on welding plate Ⅰ1. Spring 13 returns to its original state, so that wedge block 12 moves forward and engages with slot 15, and then welding plate Ⅱ9 is quickly fixed on welding plate Ⅰ1. Welding method cannot be used. When chip 5 needs to be repaired, the operator repeats the above steps, quickly removes welding plate Ⅱ9 from welding plate Ⅰ1, and then repairs chip 5.

[0026] Example 2: Based on Example 1, refer to Figure 3 As shown, a positioning rod 11 is also included. The welding plate Ⅰ1 is connected to the positioning rod 11 for auxiliary positioning by welding, and the positioning rod 11 is clamped with the welding plate Ⅱ9.

[0027] When the welding plate II 9 is placed back on the welding plate I 1 , the positioning rod 11 plays a positioning role and engages with the welding plate II 9 , thereby achieving the effect of accurately aligning the welding plate II 9 and the welding plate I 1 .

[0028] The technical principles of the embodiments of the present utility model are described above in combination with specific embodiments. These descriptions are only for explaining the principles of the embodiments of the present utility model, and cannot be interpreted in any way as limiting the protection scope of the embodiments of the present utility model. Based on the explanations here, technicians in this field can think of other specific implementation methods of the embodiments of the present utility model without creative work, and these methods will fall within the protection scope of the embodiments of the present utility model.

Claims

1. A packaging welding pad for an IGBT tube, comprising a welding pad I (1), a wire I (2), a welding piece I (3), a chip (5), a welding pad II (9), a welding piece II (7) and a wire II (8), wherein the welding pad I (1) is connected to the wire I (2), the welding pad I (1) is provided with placement grooves I (4) evenly spaced, the placement grooves I (4) are provided with welding pieces I (3), the wire I (2) is electrically connected to the welding piece I (3), the welding piece I (3) is welded to the chip (5), the welding pad II (9) is provided with placement grooves II (6) evenly spaced, the placement grooves II (6) are provided with welding pieces II (7), the welding pad II (9) is connected to the wire II (8), the wire II (8) is electrically connected to the welding piece II (7), the welding piece II (7) is welded to the chip (5), characterized in that: It also includes a wedge block (12), a spring (13), a push rod (16) and a fixed rod (17); the wedge block (12) is slidably connected inside the welding disk I (1); a spring (13) for assisting resetting is connected between the wedge block (12) and the welding disk I (1); a slot (15) is provided inside the welding disk II (9); the wedge block (12) is engaged with the slot (15); a fixed rod (17) is fixedly connected to the front of the welding disk II (9); a push rod (16) is slidably connected to the fixed rod (17); and the push rod (16) is in contact with the wedge block (12).

2. The packaging welding pad of an IGBT tube according to claim 1, characterized in that: A sealing gasket is provided on the contacting side of the welding pad I (1) and the welding pad II (9).

3. The packaging welding pad of an IGBT tube according to claim 2, characterized in that: The wedge-shaped block (12) is provided with an inclined surface to facilitate pushing.

4. The packaging welding pad of an IGBT tube according to claim 3, characterized in that: The fixing rod (17) is provided with a rubber sleeve for increasing friction.

5. The packaging welding pad of an IGBT tube according to claim 4, characterized in that: It also includes a limiting block (10), and the limiting block (10) is fixedly connected to the placement groove I (4) and the placement groove II (6).

6. The packaging welding pad of an IGBT tube according to claim 5, characterized in that: The limiting block (10) is made of silica gel.

7. The packaging welding pad of an IGBT tube according to claim 6, characterized in that: It also comprises a positioning rod (11), the welding plate I (1) is fixedly connected with the positioning rod (11) for auxiliary positioning, and the positioning rod (11) is clamped with the welding plate II (9).

8. The packaging welding pad of an IGBT tube according to claim 7, characterized in that: It also comprises guide rods (14), the welding plate I (1) is internally fixedly connected with guide rods (14) distributed on the left and right, and the wedge block (12) is slidably connected to the guide rods (14).

9. The packaging welding pad of an IGBT tube according to claim 8, characterized in that: There is great friction between the wedge block (12) and the guide rod (14).

10. The packaging welding pad of an IGBT tube according to claim 9, characterized in that: It also includes fixing holes (18) for connecting bolts, which are provided on both the welding plate I (1) and the welding plate II (9).

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