Static electricity removing device for power module

Abstract

The utility model provides a power module destaticizing device, comprising a destaticizing assembly, the destaticizing assembly comprises a power module main body, a lower conductive column, two elastic clamping pieces, a static discharge seat, a conductive plate, four fixing seats, four limiting rods and a second spring; the pins of the power module main body are symmetrically located in the two elastic clamping pieces. Under the pushing of the first spring, the limiting rod pushes the conductive plate, the conductive plate is kept in contact with the power module main body, at the moment, the conductive plate is electrically connected with the upper conductive column through the connecting rod, the elastic clamping piece is connected with the lower conductive column, the lower conductive column is connected with the electrostatic discharge seat, and then the power module main body can be in full contact with the electrostatic discharge seat. And the electrostatic discharge seat is grounded, so that static electricity removal of the power module main body can be realized, and compared with the prior art, the power module can be kept in contact with the electrostatic discharge part, the contact area is increased, and the static electricity removal effect is ensured.

Description

Technical Field

[0001] The utility model relates to a static electricity removal device, in particular to a power module static electricity removal device, and belongs to the technical field of static electricity elimination. Background Art

[0002] A power module is a combination of power electronic devices according to specific functions and then encapsulated into a module. It integrates logic, control, detection, and protection circuits, and has high performance and reliability. It mainly includes the IGBT die, gate drive circuit, and protection circuit.

[0003] When packaging power semiconductors, plastic tubes or blister boxes are generally used to place the power module for packaging. Plastic tubes or blister boxes are generally made of anti-static materials. However, even after the power module is placed in the plastic tube or blister box, it still cannot achieve complete electrostatic protection. As a result, the power module may suffer electrostatic damage, resulting in failure of the power module.

[0004] A known Chinese patent (publication number: CN203910787U) discloses an anti-static device for a power module. By using an electrostatic discharge element to short-circuit all lead pins on the power module, the device effectively prevents static electricity from flowing into the power module body along the lead pins, protecting the power module from electrostatic shock and ensuring normal operation of the power module.

[0005] It achieves static electricity release by connecting the pins of the power module to the electrostatic release component. However, the contact area between the power module and the electrostatic release component is small, and there is a lack of a clamping mechanism for the power module. The power module cannot maintain contact with the electrostatic release component, which in turn affects the static electricity removal effect. Therefore, a power module static electricity removal device is proposed. Utility Model Content

[0006] In view of this, the present invention provides a power module static removal device to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0007] The technical solution of the embodiment of the utility model is achieved as follows: a power module static electricity removal device includes a static electricity removal assembly, the static electricity removal assembly includes a power module body, a lower conductive column, two elastic clips, a static electricity release seat, a conductive plate, four fixing seats, four connecting rods, an upper conductive column, a first spring, four limit rods and a second spring;

[0008] The pins of the power module body are symmetrically located inside the two elastic clips, the electrostatic release seat is fixedly connected to the lower surface of one of the elastic clips, the two lower conductive columns are symmetrically fixedly connected to the front surfaces of the two elastic clips, the four limit rods are symmetrically fixedly connected to the upper surface of the conductive plate, the first spring is located inside the fixing seat, the four connecting rods are symmetrically fixedly connected to both sides of the conductive plate, the end of the connecting rod away from the conductive plate is connected to the upper conductive column through a wire, and the bottom end of the second spring is fixedly connected to the top of the upper conductive column.

[0009] Further preferably, the top end of the first spring presses against the inner top wall of the fixing seat, and the bottom end of the first spring presses against the top end of the limiting rod.

[0010] Further preferably, the bottom end of the upper conductive pillar is attached to the top end of the lower conductive pillar, and the lower surface of the conductive plate is attached to the upper surface of the power module body.

[0011] Further preferably, a housing assembly is installed on the outside of the power module body, and the housing assembly includes an upper housing and a lower housing;

[0012] The four fixing seats are symmetrically fixedly connected to the inner top wall of the upper shell, and the upper surface of the lower shell is symmetrically provided with two mounting grooves.

[0013] Further preferably, the two elastic clips are symmetrically fixedly connected to the inside of the mounting slot, and the bottom end of the electrostatic release seat is located below the lower shell.

[0014] Further preferably, four of the slide grooves are symmetrically fixedly connected to the lower surface of the upper shell, the upper conductive column is slidably connected to the inner side wall of the slide groove, and both ends of the second spring are fixedly connected to the inner top wall of the slide groove.

[0015] Further preferably, the lower conductive column is embedded in the interior of the lower shell, and the power module body is located inside the upper shell and the lower shell.

[0016] Further preferably, two clamping blocks are symmetrically fixedly connected to the lower surface of the upper shell, and two clamping slots are symmetrically opened on the upper surface of the lower shell, and the clamping blocks are clamped inside the clamping slots.

[0017] Due to the adoption of the above technical solution, the embodiment of the present invention has the following advantages: the present invention inserts the pins of the power module body into the interior of the elastic clip, and then docks the upper shell with the lower shell. At this time, the conductive plate is in contact with the power module body, and the upper conductive column is connected to the lower conductive column. Under the push of the first spring, the limit rod pushes the conductive plate, and the conductive plate remains in contact with the power module body. At this time, the conductive plate is electrically connected to the upper conductive column through the connecting rod, the elastic clip is connected to the lower conductive column, and the lower conductive column is connected to the electrostatic release seat, so that the power module body can be fully contacted with the electrostatic release seat, and the electrostatic release seat is grounded, which can release static electricity and achieve static electricity removal for the power module body. Compared with the existing technology, the power module can maintain contact with the electrostatic release component, and the contact area is increased, ensuring the static electricity removal effect.

[0018] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 This is an exploded view of the present utility model;

[0021] Figure 2 This is a structural diagram of the elastic clip of the utility model;

[0022] Figure 3 This is a structural diagram of the conductive plate of the present utility model;

[0023] Figure 4 This is a structural diagram of the limit rod of the utility model;

[0024] Figure 5 This is a structural diagram of the upper conductive column of the utility model;

[0025] Figure 6 This is a structural diagram of the upper shell of the present utility model.

[0026] Figure numerals: 101, static electricity removal component; 11, power module body; 12, lower conductive column; 13, elastic clip; 14, static electricity release seat; 15, conductive plate; 16, fixed seat; 17, connecting rod; 18, upper conductive column; 19, first spring; 20, limiting rod; 21, second spring; 301, shell assembly; 31, upper shell; 32, lower shell; 33, card slot; 34, mounting slot; 35, card block; 36, slide slot. DETAILED DESCRIPTION

[0027] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0028] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] like Figure 1-6 As shown, the embodiment of the present invention provides a power module static removal device, including a static removal assembly 101, which includes a power module body 11, a lower conductive column 12, two elastic clips 13, an electrostatic release seat 14, a conductive plate 15, four fixing seats 16, four connecting rods 17, an upper conductive column 18, a first spring 19, four limiting rods 20 and a second spring 21;

[0030] The pins of the power module body 11 are symmetrically located inside the two elastic clips 13, the electrostatic release seat 14 is fixedly connected to the lower surface of an elastic clip 13, the two lower conductive columns 12 are symmetrically fixedly connected to the front surfaces of the two elastic clips 13, the four limit rods 20 are symmetrically fixedly connected to the upper surface of the conductive plate 15, the first spring 19 is located inside the fixed seat 16, the four connecting rods 17 are symmetrically fixedly connected to both sides of the conductive plate 15, the end of the connecting rod 17 away from the conductive plate 15 is connected to the upper conductive column 18 through a wire, and the bottom end of the second spring 21 is fixedly connected to the top of the upper conductive column 18.

[0031] In one embodiment, the top end of the first spring 19 presses against the inner top wall of the fixing seat 16, and the bottom end of the first spring 19 presses against the top end of the limiting rod 20. The limiting rod 20 is pushed by the first spring 19, and the limiting rod 20 pushes the conductive plate 15, so that the conductive plate 15 can remain in contact with the power module body 11.

[0032] In one embodiment, the bottom end of the upper conductive column 18 is attached to the top end of the lower conductive column 12, the lower surface of the conductive plate 15 is attached to the upper surface of the power module body 11, the conductive plate 15 is electrically connected to the upper conductive column 18 through the connecting rod 17, the pin of the power module body 11 is connected to the elastic clip 13, the elastic clip 13 is connected to the lower conductive column 12, the upper conductive column 18 is connected to the lower conductive column 12, and the lower conductive column 12 is connected to the electrostatic release seat 14, so that the power module body 11 can be fully contacted with the electrostatic release seat 14, and the electrostatic release seat 14 is grounded, which can release static electricity and realize the static removal of the power module body 11.

[0033] In one embodiment, a housing assembly 301 is installed on the outside of the power module body 11 , and the housing assembly 301 includes an upper housing 31 and a lower housing 32 ;

[0034] The four fixing seats 16 are symmetrically fixedly connected to the inner top wall of the upper shell 31, and two mounting grooves 34 are symmetrically opened on the upper surface of the lower shell 32. The two elastic clips 13 are symmetrically fixedly connected to the inside of the mounting grooves 34. The bottom end of the electrostatic release seat 14 is located below the lower shell 32. The limiting rod 20 is pushed by the first spring 19, and the limiting rod 20 pushes the conductive plate 15. The conductive plate 15 maintains contact with the power module body 11, thereby ensuring the static electricity removal effect on the power module body 11.

[0035] In one embodiment, four slide grooves 36 are symmetrically fixedly connected to the lower surface of the upper shell 31, the upper conductive column 18 is slidably connected to the inner side wall of the slide groove 36, the two ends of the second spring 21 are fixedly connected to the inner top wall of the slide groove 36, the lower conductive column 12 is embedded in the interior of the lower shell 32, and the power module body 11 is located inside the upper shell 31 and the lower shell 32. The upper conductive column 18 is pushed by the second spring 21, and the upper conductive column 18 can remain in contact with the lower conductive column 12, thereby ensuring the static electricity removal effect on the power module body 11.

[0036] In one embodiment, two clamping blocks 35 are symmetrically fixedly connected to the lower surface of the upper shell 31, and two clamping slots 33 are symmetrically opened on the upper surface of the lower shell 32. The clamping blocks 35 are clamped into the inside of the clamping slots 33. The cooperation between the clamping blocks 35 and the clamping slots 33 facilitates the installation of the upper shell 31 and the lower shell 32.

[0037] When the present invention is in operation: the pins of the power module body 11 are inserted into the interior of the elastic clip 13, and then the upper shell 31 is docked with the lower shell 32. At this time, the conductive plate 15 is in contact with the power module body 11, the upper conductive column 18 is connected to the lower conductive column 12, and the first spring 19 is compressed by force. Under the push of the first spring 19, the limit rod 20 pushes the conductive plate 15, and the conductive plate 15 remains in contact with the power module body 11, and the electrostatic release seat 14 is grounded. At this time, the conductive plate 15 is electrically connected to the upper conductive column 18 through the connecting rod 17, the elastic clip 13 is connected to the lower conductive column 12, and the lower conductive column 12 is connected to the electrostatic release seat 14, so that the power module body 11 can be fully contacted with the electrostatic release seat 14, and the electrostatic release seat 14 is grounded, which can release static electricity and realize the static removal of the power module body 11.

[0038] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions are intended to be within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A power module static electricity removal device, comprising a static electricity removal component (101), characterized in that: The static electricity removal assembly (101) comprises a power module body (11), a lower conductive column (12), two elastic clips (13), an electrostatic release seat (14), a conductive plate (15), four fixing seats (16), four connecting rods (17), an upper conductive column (18), a first spring (19), four limiting rods (20) and a second spring (21); The pins of the power module body (11) are symmetrically located inside the two elastic clips (13), the electrostatic release seat (14) is fixedly connected to the lower surface of one of the elastic clips (13), the two lower conductive columns (12) are symmetrically fixedly connected to the front surfaces of the two elastic clips (13), the four limiting rods (20) are symmetrically fixedly connected to the upper surface of the conductive plate (15), the first spring (19) is located inside the fixing seat (16), the four connecting rods (17) are symmetrically fixedly connected to both sides of the conductive plate (15), the end of the connecting rod (17) away from the conductive plate (15) is connected to the upper conductive column (18) through a wire, and the bottom end of the second spring (21) is fixedly connected to the top of the upper conductive column (18).

2. The power module static removal device according to claim 1, characterized in that: The top end of the first spring (19) presses against the inner top wall of the fixing seat (16), and the bottom end of the first spring (19) presses against the top end of the limiting rod (20).

3. The power module static removal device according to claim 2, characterized in that: The bottom end of the upper conductive column (18) is attached to the top end of the lower conductive column (12), and the lower surface of the conductive plate (15) is attached to the upper surface of the power module body (11).

4. The power module static removal device according to claim 3, characterized in that: A housing assembly (301) is installed outside the power module body (11), and the housing assembly (301) comprises an upper housing (31) and a lower housing (32); The four fixing seats (16) are symmetrically fixedly connected to the inner top wall of the upper shell (31), and the upper surface of the lower shell (32) is symmetrically provided with two mounting grooves (34).

5. The power module static removal device according to claim 4, characterized in that: The two elastic clips (13) are symmetrically fixedly connected to the inside of the installation groove (34), and the bottom end of the electrostatic release seat (14) is located below the lower shell (32).

6. The power module static removal device according to claim 4, characterized in that: Four slide grooves (36) are symmetrically fixedly connected to the lower surface of the upper shell (31), the upper conductive column (18) is slidably connected to the inner side wall of the slide groove (36), and the two ends of the second spring (21) are fixedly connected to the inner top wall of the slide groove (36).

7. The power module static removal device according to claim 6, characterized in that: The lower conductive column (12) is embedded in the interior of the lower shell (32), and the power module body (11) is located inside the upper shell (31) and the lower shell (32).

8. The power module static removal device according to claim 7, characterized in that: Two clamping blocks (35) are symmetrically fixedly connected to the lower surface of the upper shell (31), and two clamping slots (33) are symmetrically opened on the upper surface of the lower shell (32), and the clamping blocks (35) are clamped inside the clamping slots (33).

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