CN212905234U

CN212905234U - IGBT module partial discharge test tool

Info

Publication number: CN212905234U
Application number: CN202020747337.XU
Authority: CN
Inventors: 刘毅
Original assignee: Zhuzhou Hualiang Machinery Manufacturing Co ltd
Current assignee: Zhuzhou Hualiang Machinery Manufacturing Co ltd
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2021-04-06
Anticipated expiration: 2030-05-08

Abstract

The utility model provides a partial discharge test tool for an IGBT module, which comprises an upper insulating plate, a front-back moving workbench and a front-back moving workbench; the upper insulating plate and the front-back moving workbench are oppositely arranged, a probe fixing plate is arranged on the inner side surface of the upper insulating plate, and a lower copper bar is arranged on the opposite surface of the front-back moving workbench; a plurality of probes are fixed on the probe fixing plate; the upper insulating plate and the front-back moving workbench are respectively fixed with a conductive test connecting end; the front-back moving workbench is fixed on the table top of the up-down moving workbench. The utility model discloses make the detection installation of IGBT module more convenient, through the upper and lower action of workstation, can detect disposable many places circular telegram position to the module, improved detection efficiency to need not the manual contact module during the detection, improved the security.

Description

IGBT module partial discharge test tool

Technical Field

The utility model relates to a IGBT module technical field, concretely relates to IGBT module partial discharge test fixture.

Background

An Insulated Gate Bipolar Transistor (IGBT) is a composite fully-controlled voltage-driven power semiconductor device consisting of a Bipolar Junction Transistor (BJT) and an insulated Gate field effect transistor (MOS), and is very suitable for being applied to the fields of converter systems with direct current voltage of 600V or more, such as alternating current motors, frequency converters, switching power supplies, lighting circuits, traction transmission and the like.

A plurality of PIN needles, terminals and bottom copper bars are arranged on the IGBT module, when partial discharge tests are carried out on the IGBT module under the existing conditions, the wiring clamps are generally manually connected one by holding of a detector, and due to the influence of human operation factors, phenomena such as poor contact, missing detection and clamping damage to the surface of the module can happen frequently, so that data measurement is inaccurate, the efficiency is extremely low, and potential safety hazards exist in manual operation due to the insulation problem.

Disclosure of Invention

To the above-mentioned problem that prior art exists, the utility model provides a can realize high-efficient, safety inspection's IGBT module partial discharge test frock.

The utility model adopts the following technical scheme:

a partial discharge test tool for an IGBT module comprises an upper insulating plate, a front and back moving workbench and a front and back moving workbench; the upper insulating plate and the front-back moving workbench are oppositely arranged, a probe fixing plate is arranged on the inner side surface of the upper insulating plate, and a lower copper bar is arranged on the opposite surface of the front-back moving workbench; a plurality of probes are fixed on the probe fixing plate; the upper insulating plate and the front-back moving workbench are respectively fixed with a conductive test connecting end; the front-back moving workbench is fixed on the table top of the up-down moving workbench.

Further, the probes comprise a concave probe and a round probe.

Further, the lower copper bar is connected with the conductive test connection end.

Furthermore, a guide rail is arranged below the front-back moving workbench.

Furthermore, the bottom of the up-down moving workbench is supported by a guide pillar arranged in the linear bearing and is provided with a lifting device.

Furthermore, the lifting device consists of a bearing seat and a connecting rod rotating around the bearing seat; one end of the connecting rod supports the up-and-down moving workbench.

Furthermore, a cylindrical bearing is fixed on the connecting rod and is connected with the handle.

Further, FR4 insulating plates are adopted as shells of the test tools.

The utility model provides a IGBT module partial discharge test fixture sets up the probe of two portable workstations and fixed position for the detection installation of IGBT module is more convenient, through the upper and lower action of workstation, can detect the many places circular telegram position of module once only, has improved detection efficiency, and need not artifical contact module during the detection, has improved the security.

Drawings

FIG. 1 is a schematic structural view of the IGBT module partial discharge test fixture of the present invention;

FIG. 2 is a top view of the IGBT module partial discharge test fixture of the present invention;

fig. 3 is a schematic view of the structure of the up-and-down moving table.

Fig. 4 is a schematic structural diagram of an IGBT module.

Detailed Description

The present invention will be further explained with reference to the drawings and examples. In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and the like are used in the indicated orientations and positional relationships based on the orientation shown in the drawings for convenience in describing the present invention and to simplify the description, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present invention.

As shown in fig. 1, the present embodiment proposes a partial discharge test fixture for an IGBT module (M1 type), the main body of which includes an upper insulating plate 2, a front-back moving table 5, and a top-down moving table 8; wherein the front and back moving workbench 5 is fixed on the top surface of the up and down moving workbench 8 and is arranged opposite to the upper insulating plate 2, and the upper insulating plate is supported by an insulating stud; a probe fixing plate 3 is arranged on the inner side surface of the upper insulating plate 2, a plurality of probes are fixed on the probe fixing plate, and the probes comprise a concave probe 31 and a round probe 32; as shown in fig. 4, the IGBT module (M1 type) is provided with a plurality of PIN PINs 41 and terminals 42, wherein the PIN PINs 41 correspond to the female probe 31, and the terminals correspond to the round probe 32; a lower copper bar 43 is arranged on one surface of the front and rear movable working tables 5, which is opposite to the upper insulating plate, the lower copper bar 43 is connected with a conductive test connecting end which is connected with a conductive test connecting wire 6; and a conductive test connection terminal 1 is also fixed in the upper insulating plate and connected to each probe.

Two guide rails 51 are arranged below the front-back moving platform 5 for sliding, and the front-back moving platform is similar to a drawer; the bottom of the up-and-down moving workbench 8 is supported by a guide post 81 arranged in a linear bearing 82 and is provided with a lifting device, the lifting device consists of a bearing seat 84 and a connecting rod rotating around the bearing seat, one end of the connecting rod supports the up-and-down moving workbench 8, and the end is fixed with a cylindrical bearing 83 and is connected with the handle 7; therefore, the utility model discloses a basic working method as follows: before testing, the IGBT module 4 is placed at a determined position of the front-back moving workbench 5, then the handle 7 is shaken to control the up-down moving platform 8 to ascend, and all probes of the upper insulating plate 2 are in contact with the PIN PINs 41 and the terminals 42 of the IGBT module 4, so that the testing can be started by electrifying; after the test technology, the power is cut off, the up-and-down moving platform 5 is shaken down, and the IGBT module 4 is taken back.

To sum up, the utility model provides a IGBT module partial discharge test fixture sets up the probe of two portable workstations and fixed position for the detection installation of IGBT module is more convenient, through the upper and lower action of workstation, can detect the many places circular telegram position of module once only, has improved detection efficiency, and need not artifical contact module during the detection, has improved the security.

It should be understood that the above examples are only for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A partial discharge test tool for an IGBT module is characterized by comprising an upper insulating plate, a front-and-back moving workbench and a front-and-back moving workbench; the upper insulating plate and the front-back moving workbench are oppositely arranged, a probe fixing plate is arranged on the inner side surface of the upper insulating plate, and a lower copper bar is arranged on the opposite surface of the front-back moving workbench; a plurality of probes are fixed on the probe fixing plate; the upper insulating plate and the front-back moving workbench are respectively fixed with a conductive test connecting end; the front-back moving workbench is fixed on the table top of the up-down moving workbench.

2. The IGBT module partial discharge test tool of claim 1, wherein the plurality of probes comprise a socket probe and a round probe.

3. The IGBT module partial discharge test tool of claim 1, wherein the lower copper bar is connected with a conductive test connection end.

4. The IGBT module partial discharge test tool of claim 1, wherein a guide rail is arranged below the front-back moving workbench.

5. The IGBT module partial discharge test tool of claim 1, wherein the bottom of the up-down moving workbench is supported by a guide pillar arranged in a linear bearing and provided with a lifting device.

6. The IGBT module partial discharge test tool of claim 5, wherein the lifting device is composed of a bearing seat and a connecting rod rotating around the bearing seat; one end of the connecting rod supports the up-and-down moving workbench.

7. The IGBT module partial discharge test tool of claim 6, wherein a cylindrical bearing is fixed on the connecting rod and connected with the handle.

8. The IGBT module partial discharge test tool of claim 1, wherein an FR4 insulating board is adopted as a shell of the test tool.