Inverter with IGBT (Insulated Gate Bipolar Translator) module assembling and pressing structure

Abstract

The utility model relates to the technical field of inverters, and discloses an inverter with an IGBT module assembling and compressing structure, which comprises a circuit board, two groups of compressing assemblies are symmetrically arranged on the upper surface of the circuit board, limiting assemblies are arranged at opposite ends of the two groups of compressing assemblies, and a module body is arranged between the two groups of compressing assemblies; the pressing assembly comprises a fixing plate, two sets of fixing shafts and a pressing piece, the module body preferentially abuts against the limiting assembly when installed, then the sliding block moves to drive the hexagonal block to be separated from the hexagonal hole to relieve fixing of the fixing shafts, then the module body abuts against the pressing piece in the downward pressing process and then rotates by 90 degrees, and therefore the module body is pressed by the pressing piece, and the module body is fixed. The sliding block resets under the action of the spring, then the hexagonal block is inserted into the hexagonal hole, the module body is rapidly installed after the fixing shaft is positioned, operation is easy, and maintenance and replacement by workers are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of inverters, in particular to an inverter with an IGBT module assembly and compression structure. Background Art

[0002] As an important device for new energy, inverters are widely used in wind power, solar energy and other fields; power line communication has the advantages of simple and fast networking, wide frequency range, no need for rewiring, and low cost, and is widely used in inverter communication systems. Photovoltaic inverters are power conversion devices that can convert direct current generated by photovoltaic solar panels into alternating current. The alternating current output by photovoltaic inverters can be used for various types of equipment to meet the needs of users in mobile power supply places or areas without electricity for AC power. One of the important factors restricting its safe operation is the heat dissipation of electronic power devices such as IGBT in photovoltaic inverters;

[0003] The IGBT module in the prior art is usually fixedly connected to the heat sink by screws, thereby ensuring the stability of the connection between the IGBT module and the heat sink, and at the same time ensuring the heat dissipation efficiency of the IGBT module. However, when the IGBT module is repaired or replaced, the fixing screws need to be unscrewed one by one, which increases the time for disassembly and reduces the efficiency of maintenance. At the same time, it needs to be installed again after repair and replacement, and the repeated tightening of the screws increases the workload of the maintenance personnel. Therefore, we need to propose an inverter with an IGBT module assembly and clamping structure. Utility Model Content

[0004] The purpose of the utility model is to provide an inverter with an IGBT module assembly clamping structure, which fixes the position of the IGBT module by a clamping and limiting method, thereby improving the installation efficiency of the IGBT module and facilitating the rapid disassembly of the IGBT module, so as to facilitate maintenance personnel to repair and replace it, thereby ensuring the service life of the inverter, and solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inverter with an IGBT module assembly and clamping structure, comprising a circuit board, two groups of clamping components are symmetrically arranged on the upper surface of the circuit board, and the two groups of clamping components are both provided with limit assemblies at opposite ends, and a module body is arranged between the two groups of clamping components;

[0006] The clamping assembly includes a fixing plate, two sets of fixing shafts and a clamping piece, one side of the fixing plate is provided with a hidden hole for the two sets of fixing shafts to rotate and plug in, and one end of the two sets of fixing shafts respectively passes through the fixing plate and is fixedly connected to one side of the two sets of clamping pieces, and the other ends of the two sets of fixing shafts are provided with a hexagonal hole;

[0007] The limit assembly includes a sealing plate and four groups of limit rods, the four groups of limit rods are fixedly connected to one side of the fixed plate, the sealing plate is slidably inserted into one end of the four groups of limit rods, and the outer sides of the four groups of limit rods are sleeved with springs, and one side of the sealing plate is fixedly connected with two groups of hexagonal blocks that fit with the hexagonal holes.

[0008] Preferably, magnets are fixedly connected to both ends of the other side of the fixing plate, the vertical cross-section of the clamping member is L-shaped, and a sliding groove is provided on the upper surface of the fixing plate.

[0009] Preferably, a slider slidably connected to the slide groove is fixedly connected to the upper end of one side of the sealing plate, an inclined portion is provided at the upper end of one side of the slider, and a rotating rod is rotatably connected to the other side of the sealing plate, and the cross-section of the rotating rod is L-shaped.

[0010] Preferably, two groups of stoppers are symmetrically arranged on the upper surface of the circuit board, and the axis centers of the stoppers and the axis center of the rotating rod are arranged on the same straight line.

[0011] Preferably, a heat sink is further included, wherein a plurality of limit blocks are fixedly connected to the upper surface of the heat sink, and a slot is provided on one side of the plurality of limit blocks, and a positioning hole is provided on the upper surface of the circuit board for the plurality of limit blocks to be connected.

[0012] Preferably, a lower silicone thermal pad is provided on the upper surface of the radiator, and a plurality of thermal strips are bonded to the upper surface of the lower silicone thermal pad. An upper silicone thermal pad is provided on the lower surface of the circuit board, and the lower surface of the upper silicone thermal pad is in conflict with the plurality of thermal strips.

[0013] Preferably, the plurality of groups of thermally conductive strips are arranged in parallel, thermally conductive silicone grease is provided on the lower surface of the module body, both sides of the module body are slidably connected to the fixing plate, and the upper surface of the radiator is symmetrically provided with two groups of support seats for supporting the circuit board.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model mainly cooperates between the circuit board, the fixing component and the limit component. When the module body is installed, it first contacts the limit component, so that the slider moves and drives the hexagonal block to disengage from the hexagonal hole to release the fixation of the fixed shaft. Then, during the process of pressing down the module body, it contacts the clamping piece and rotates it 90 degrees, so that the clamping piece presses the module body. The slider is reset under the action of the spring, so that the hexagonal block is inserted into the hexagonal hole. After positioning the fixed shaft, the module body is quickly installed. The operation is simple and convenient for staff to repair and replace.

[0016] 2. The utility model cooperates between the rotating rod and the stopper, and pulls the rotating rod to disengage the hexagonal block from the hexagonal hole, and makes the rotating rod rest on the stopper to keep the hexagonal block and the hexagonal hole separated, thereby facilitating the disassembly of the module body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the radiator structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the circuit board structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the clamping assembly and the limiting assembly of the utility model.

[0021] In the figure: 1. radiator; 2. support base; 3. circuit board; 4. limit block; 5. slot; 6. lower silicone thermal pad; 7. thermal strip; 8. upper silicone thermal pad; 9. positioning hole; 10. block; 11. clamping assembly; 111. fixing plate; 112. magnet; 113. slide groove; 114. fixing shaft; 115. clamping piece; 116. hexagonal hole; 117. hidden hole; 12. limit assembly; 121. sealing plate; 122. slider; 123. hexagonal block; 124. limit rod; 125. rotating rod; 126. spring; 13. module body; 14. thermal grease. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 The utility model provides a technical solution: an inverter with an IGBT module assembly and clamping structure, comprising a circuit board 3, two groups of clamping components 11 are symmetrically arranged on the upper surface of the circuit board 3, and the two groups of clamping components 11 are respectively provided with a limit component 12 at opposite ends, and a module body 13 is arranged between the two groups of clamping components 11;

[0024] The clamping assembly 11 includes a fixing plate 111, two sets of fixing shafts 114 and a clamping member 115. A hidden hole 117 is provided on one side of the fixing plate 111 for the two sets of fixing shafts 114 to be rotatably plugged in. One end of the two sets of fixing shafts 114 passes through the fixing plate 111 and is fixedly connected to one side of the two sets of clamping members 115. The other ends of the two sets of fixing shafts 114 are provided with a hexagonal hole 116.

[0025] The limiting assembly 12 includes a sealing plate 121 and four groups of limiting rods 124. The four groups of limiting rods 124 are fixedly connected to one side of the fixed plate 111. The sealing plate 121 is slidably inserted into one end of the four groups of limiting rods 124, and the outer sides of the four groups of limiting rods 124 are all sleeved with springs 126. Two groups of hexagonal blocks 123 that fit the hexagonal holes 116 are fixedly connected to one side of the sealing plate 121.

[0026] Magnets 112 are fixedly connected at both ends of the other side of the fixing plate 111. The vertical cross-section of the clamping piece 115 is L-shaped. A sliding groove 113 is provided on the upper surface of the fixing plate 111. The magnet 112 is used to facilitate the positioning of the clamping piece 115 after the module body 13 is removed to avoid its opening facing downward, so as to facilitate the quick installation of the module body 13.

[0027] A slider 122 slidably connected to the slide groove 113 is fixedly connected to the upper end of one side of the sealing plate 121, and an inclined portion is provided on the upper end of one side of the slider 122. A rotating rod 125 is rotatably connected to the other side of the sealing plate 121. The cross-section of the rotating rod 125 is L-shaped. The inclined portion on the slider 122 facilitates the contact with the module body 13, thereby allowing the hexagonal block 123 to disengage from the hexagonal hole 116 while facilitating the module body 13 to contact the clamping piece 115.

[0028] Two groups of blocks 10 are symmetrically arranged on the upper surface of the circuit board 3 , and the axes of the blocks 10 and the rotating rod 125 are arranged on the same straight line. The blocks 10 facilitate positioning of the limit assembly 12 and further facilitate disassembly of the module body 13 .

[0029] It also includes a heat sink 1, the upper surface of which is fixedly connected to multiple groups of limit blocks 4, and one side of the multiple groups of limit blocks 4 is provided with a card slot 5, and the upper surface of the circuit board 3 is provided with positioning holes 9 for the multiple groups of limit blocks 4 to be engaged, and the card slots 5 on the multiple groups of limit blocks 4 are conveniently matched with the positioning holes 9 on the circuit board 3, thereby improving the stability of the circuit board 3 after installation.

[0030] A lower silicone thermal pad 6 is provided on the upper surface of the radiator 1, and a plurality of thermal conductive strips 7 are bonded to the upper surface of the lower silicone thermal pad 6. An upper silicone thermal pad 8 is provided on the lower surface of the circuit board 3, and the lower surface of the upper silicone thermal pad 8 is in contact with the plurality of thermal conductive strips 7. The heat energy is transferred to the lower silicone thermal pad 6 through the thermal conductive strips 7 by the upper silicone thermal pad 8, and then dissipated by the radiator 1. The heat dissipation is performed by the cooling fan in the inverter, thereby improving the heat dissipation efficiency.

[0031] Multiple groups of thermal conductive strips 7 are arranged in parallel, and thermal conductive silicone grease 14 is provided on the lower surface of the module body 13. Both sides of the module body 13 are slidably connected to the fixing plate 111. Two groups of support seats 2 for supporting the circuit board 3 are symmetrically provided on the upper surface of the radiator 1. The support seats 2 improve the installation stability of the circuit board 3. At the same time, multiple groups of thermal conductive strips 7 are arranged in parallel with gaps, which facilitates the flow of heat under the influence of airflow, thereby improving the heat dissipation efficiency.

[0032] When the module body 13 is installed, the module body 13 will first contact the slider 122 on the sealing plate 121 during the downward pressing process, thereby causing the inclined portion of the slider 122 to slide with the module body 13. After the slider 122 slides along the slide groove 113, the sealing plate 121 presses the spring 126 on the limiting rod 124, thereby causing the module body 13 to contact the pressing member 115 during the pressing process, and the pressing member 115 is separated from the magnet 112. During the continuous downward pressing process of the module body 13, the sealing plate 121 drives the slider 122 to reset due to the reaction force of the spring 126, thereby limiting the module body 13. At the same time, when the thermal conductive silicone grease 14 on the lower surface of the module body 13 contacts After the circuit board 3 is touched, the hexagonal block 123 on the sealing plate 121 is inserted into the hexagonal hole 116 on the fixed shaft 114, thereby positioning the fixed shaft 114 to prevent vibration from affecting the installation stability of the module body 13 and preventing the module body 13 from detaching. During disassembly, the rotating rod 125 is pulled to make the sealing plate 121 compress the spring 126 while disengaging the hexagonal block 123 from the hexagonal hole 116, and then the rotating rod 125 is placed on the stop block 10 to keep the sealing plate 121 separated from the fixed plate 111, so as to facilitate the removal of the module body 13, and the magnet 112 absorbs the clamping piece 115 to prevent the clamping piece 115 from rotating, so as to facilitate the replacement of the module body 13, and the operation is simple and convenient.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An inverter with an IGBT module assembly and compression structure, comprising a circuit board (3), characterized in that: Two groups of clamping assemblies (11) are symmetrically arranged on the upper surface of the circuit board (3), and a limiting assembly (12) is arranged at opposite ends of the two groups of clamping assemblies (11), and a module body (13) is arranged between the two groups of clamping assemblies (11); The clamping assembly (11) comprises a fixing plate (111), two groups of fixing shafts (114) and a clamping piece (115); a hidden hole (117) for the two groups of fixing shafts (114) to be rotatably plugged is provided on one side of the fixing plate (111), and one end of the two groups of fixing shafts (114) respectively passes through the fixing plate (111) and is fixedly connected to one side of the two groups of clamping pieces (115); and the other ends of the two groups of fixing shafts (114) are provided with a hexagonal hole (116); The limit assembly (12) comprises a sealing plate (121) and four groups of limit rods (124); the four groups of limit rods (124) are fixedly connected to one side of the fixed plate (111); the sealing plate (121) is slidably inserted into one end of the four groups of limit rods (124); and the outer sides of the four groups of limit rods (124) are sleeved with springs (126); and two groups of hexagonal blocks (123) that fit the hexagonal holes (116) are fixedly connected to one side of the sealing plate (121).

2. The inverter with an IGBT module assembly and compression structure according to claim 1, characterized in that: Both ends of the other side of the fixing plate (111) are fixedly connected with magnets (112); the vertical cross-section of the pressing member (115) is arranged in an L-shape; and a sliding groove (113) is provided on the upper surface of the fixing plate (111).

3. The inverter with an IGBT module assembly and compression structure according to claim 2, characterized in that: A slider (122) slidably connected to the slide groove (113) is fixedly connected to the upper end of one side of the sealing plate (121); an inclined portion is provided at the upper end of one side of the slider (122); a rotating rod (125) is rotatably connected to the other side of the sealing plate (121); and the cross section of the rotating rod (125) is L-shaped.

4. The inverter with an IGBT module assembly and compression structure according to claim 3, characterized in that: Two groups of stoppers (10) are symmetrically arranged on the upper surface of the circuit board (3), and the axis centers of the stoppers (10) and the axis center of the rotating rod (125) are arranged on the same straight line.

5. The inverter with an IGBT module assembly and compression structure according to claim 4, characterized in that: It also comprises a heat sink (1), wherein a plurality of groups of limit blocks (4) are fixedly connected to the upper surface of the heat sink (1), and a clamping slot (5) is provided on one side of the plurality of groups of limit blocks (4), and a positioning hole (9) for clamping the plurality of groups of limit blocks (4) is provided on the upper surface of the circuit board (3).

6. The inverter with an IGBT module assembly and compression structure according to claim 5, characterized in that: The upper surface of the heat sink (1) is provided with a lower silicone thermal pad (6), and a plurality of groups of thermal conductive strips (7) are bonded to the upper surface of the lower silicone thermal pad (6); the lower surface of the circuit board (3) is provided with an upper silicone thermal pad (8), and the lower surface of the upper silicone thermal pad (8) is in contact with the plurality of groups of thermal conductive strips (7).

7. The inverter with an IGBT module assembly and compression structure according to claim 6, characterized in that: A plurality of groups of heat-conducting strips (7) are arranged in parallel, a lower surface of the module body (13) is provided with heat-conducting silicone grease (14), both sides of the module body (13) are slidably connected to a fixing plate (111), and an upper surface of the heat sink (1) is symmetrically provided with two groups of support seats (2) for supporting a circuit board (3).

Images