Fixing tool for testing electric stress of converter module

Abstract

The utility model discloses a converter module electrical stress test fixing tool, which comprises N voltage probe placing boxes, a main fixing shaft, a first support member and a second support member, and is characterized in that the N voltage probe placing boxes are hinged on the main fixing shaft side by side along the axial direction of the main fixing shaft and rotate along the main fixing shaft; the two ends of the main fixing shaft are connected with the first supporting component, the first supporting component is connected with the second supporting component, the second supporting component is connected with a switching fixing piece, and the first supporting component conducts fine adjustment of the rotation angle relative to the second supporting component. The second supporting component is adjusted up and down relative to the switching fixing piece. According to the tool, the voltage probe can be rapidly and firmly connected to the test point of the converter module, the probe can be rapidly removed in the test process, the position and angle of the probe can be adjusted according to actual test requirements, and accurate butt joint of the probe and the test point of the converter module is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of electric stress testing, in particular to a fixing tool for electric stress testing of a converter module. Background Art

[0002] In power systems, the performance of converter modules is directly related to the stability and reliability of the power system. In actual operation, converter modules often face rapid changes in voltage and current, namely electrical stress. These sudden changes may cause aging of the insulation materials inside the module, degradation of semiconductor device performance, and even equipment failure. To ensure the reliability and safety of converter modules under various operating conditions, they are subjected to electrical stress testing.

[0003] The prior art lacks an electrical stress test fixing tool that can quickly and securely connect to the test point of the converter module during the electrical stress test of the converter module, quickly remove the probe during the test, and adjust the position and angle of the probe according to actual test requirements to ensure that the probe is accurately connected to the test point of the IGBT.

[0004] The electrical stress test process of the converter module in the prior art is as follows: First, the design of the converter module encapsulates key power devices such as IGBT inside the module, making it very difficult to directly measure the Vce voltage and Vge voltage, where the Vce voltage is the voltage between the collector and the emitter, and the Vge voltage is the voltage between the gate and the emitter. During the actual test process, the tester needs to lead the test point on the IGBT to the outside of the module through an extension line. Different testers may use different wiring methods and extension line lengths, which may lead to inconsistency and non-repeatability of the test results. In addition, the quality and contact resistance of the extension line may also affect the accuracy of the test data. These problems not only increase the complexity of the test, but may also lead to erroneous test conclusions, thereby affecting the reliability assessment of the converter module. Utility Model Content

[0005] The technical problem to be solved by the present invention is to propose a converter module electric stress test fixing tool, which enables the voltage probe to be quickly and firmly connected to the test point of the converter module, and the probe can be quickly removed during the test process. The position and angle of the probe can be adjusted according to actual test requirements to ensure that the probe is accurately connected to the test point of the converter module.

[0006] In order to solve the above technical problems, the utility model provides an inverter module electric stress test fixing tool, including N voltage probe placement boxes, a main fixed shaft, a first support member, and a second support member. The N voltage probe placement boxes are hinged side by side on the main fixed shaft along the axial direction of the main fixed shaft, and the N voltage probe placement boxes rotate along the main fixed shaft. The two ends of the main fixed shaft are connected to the first support member, the first support member is connected to the second support member, and the second support member is connected to the adapter fixing piece. The first support member is fine-tuned in rotation angle relative to the second support member, and the second support member is adjusted up and down relative to the adapter fixing piece.

[0007] Preferably, each voltage probe placement box includes a placement box body and a hinged connection member assembled with the placement box body, and the voltage probe placement box is connected to the main fixed shaft through the hinged connection member.

[0008] Preferably, the main fixed shaft includes a main fixed shaft body and a first fastener assembled with the main fixed shaft body.

[0009] Preferably, the first support member includes two first support arms, a connecting shaft and a fine-tuning fastener, one end of the two first support arms is respectively assembled on the two ends of the main fixed shaft, and the other ends of the two first support arms are respectively assembled with the second support member through an adapter, a connecting shaft and a fine-tuning fastener.

[0010] Preferably, the second support member includes two second support arm members, one end of the two second support arm members is assembled with the other end of the two first support arms through the two adapter members; the other end of the two second support arm members is connected to the two adapter fixing members.

[0011] Preferably, each of the second support arm members includes an upper support arm and a lower support arm, and the upper support arm and the lower support arm form a parallelogram that can deform up and down with the two adapters and the two adapter fixing members, and a damper is connected between the upper support arm and the lower support arm.

[0012] Preferably, the damper is a hydraulic cylinder or a pneumatic cylinder.

[0013] After using the above-mentioned tool, the converter module electric stress test fixing tool includes N voltage probe placement boxes, a main fixed shaft, a first support member, and a second support member. The N voltage probe placement boxes are hinged side by side on the main fixed shaft along the axial direction of the main fixed shaft. The N voltage probe placement boxes rotate along the main fixed shaft. The two ends of the main fixed shaft are connected to the first support member, the first support member is connected to the second support member, the second support member is connected to the adapter fixing member, the first support member is fine-tuned in rotation angle relative to the second support member, and the second support member is adjusted up and down relative to the adapter fixing member; the converter module electric stress test fixing tool enables the voltage probe to be quickly and firmly connected to the test point of the converter module, the probe can be quickly removed during the test process, and the position and angle of the probe can be adjusted according to actual test requirements to ensure that the probe is accurately docked with the test point of the converter module. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of a converter module electric stress test fixing tool of the utility model;

[0015] Figure 2 This is a schematic diagram of the action of the second support arm of a fixing tool for an electric stress test of a converter module according to the present invention.

[0016] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0017] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clearer and more understandable, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0018] In the description of this application, it should be understood that the directions or positional relationships indicated by terms such as "center," "upper," "lower," "front," "back," "left," and "right" are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] Example 1

[0020] See also Figure 1 , Figure 1 This is a structural diagram of a converter module electric stress test fixing tool of the utility model;

[0021] This embodiment discloses a converter module electric stress test fixing tool, including N voltage probe placement boxes 4, a main fixed shaft 5, a first support member, and a second support member. The N voltage probe placement boxes 4 are hinged side by side on the main fixed shaft 5 along the axial direction of the main fixed shaft. The N voltage probe placement boxes 4 rotate along the main fixed shaft 5. The two ends of the main fixed shaft 5 are connected to the first support member, the first support member is connected to the second support member, and the second support member is connected to the adapter fixing member 8. The first support member is fine-tuned in rotation angle relative to the second support member, and the second support member is adjusted up and down relative to the adapter fixing member 8.

[0022] Example 2

[0023] This embodiment is based on the first embodiment. In this embodiment, each voltage probe placement box 4 includes a placement box body and a hinged connection component assembled with the placement box body. The voltage probe placement box 4 is connected to the main fixed shaft 5 through the hinged connection component.

[0024] The main fixed shaft 5 includes a main fixed shaft body 51 and a first fastener 52 assembled with the main fixed shaft body.

[0025] The first support member 2 includes two first support arms 21, a connecting shaft 22 and a fine-tuning fastener 23. One end of the two first support arms 21 is respectively assembled on the two ends of the main fixed shaft 5, and the other ends of the two first support arms 21 are respectively assembled with the second support member through the adapter 3, the connecting shaft 22 and the fine-tuning fastener 23.

[0026] The second support member 6 includes two second support arm members 61, one end of the two second support arm members is assembled with the other end of the two first support arms 21 through the two adapter members 3; the other end of the two second support arm members 61 is connected to the two adapter fixing members 8 respectively.

[0027] Example 3

[0028] This embodiment is based on the second embodiment. In this embodiment, each of the second support arms 61 includes an upper support arm and a lower support arm. Figure 2 As shown, the upper support arm and the lower support arm, the two adapters 3 and the two adapter fixing members 8 form a parallelogram that can be deformed up and down, and a damper 62 is connected between the upper support arm and the lower support arm.

[0029] The damper 62 is a hydraulic cylinder or a pneumatic cylinder.

[0030] This converter module electrical stress test fixture tool enables the voltage probe to be quickly and securely connected to the converter module's test point. The probe can be quickly removed during the test process, and the probe's position and angle can be adjusted according to actual test requirements to ensure precise docking of the probe with the converter module's test point.

[0031] The preferred embodiments of the present application are described above with reference to the accompanying drawings, but are not intended to limit the scope of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and essence of the present application shall fall within the scope of the present application.

Claims

1. A converter module electrical stress test fixing tool, characterized in that: It includes N voltage probe placement boxes, a main fixed shaft, a first support member, and a second support member. The N voltage probe placement boxes are hinged on the main fixed shaft side by side along the axial direction of the main fixed shaft. The N voltage probe placement boxes rotate along the main fixed shaft. The two ends of the main fixed shaft are connected to the first support member, the first support member is connected to the second support member, the second support member is connected to the adapter fixing member, the first support member is fine-tuned in rotation angle relative to the second support member, and the second support member is adjusted up and down relative to the adapter fixing member.

2. The converter module electrical stress test fixing tool according to claim 1, characterized in that: Each voltage probe placement box includes a placement box body and a hinged connection component assembled with the placement box body. The voltage probe placement box is connected to the main fixed shaft through the hinged connection component.

3. The converter module electrical stress test fixing tool according to claim 1, characterized in that: The main fixed shaft includes a main fixed shaft body and a first fastener assembled with the main fixed shaft body.

4. The converter module electrical stress test fixing tool according to claim 1, characterized in that: The first support member includes two first support arms, a connecting shaft and a fine-tuning fastener. One end of the two first support arms is respectively assembled on the two ends of the main fixed shaft, and the other ends of the two first support arms are respectively assembled with the second support member through an adapter, a connecting shaft and a fine-tuning fastener.

5. The converter module electrical stress test fixing tool according to claim 4, characterized in that: The second supporting member includes two second supporting arms, one end of the two second supporting arms being assembled with the other ends of the two first supporting arms through the two adapters respectively; The other ends of the two second support arm members are respectively connected to the two adapter fixing members.

6. The converter module electrical stress test fixing tool according to claim 5, characterized in that: Each of the second support arms includes an upper support arm and a lower support arm. The upper support arm and the lower support arm, together with the two adapters and the two adapter fixings, form a parallelogram that can be deformed up and down. A damper is connected between the upper support arm and the lower support arm.

7. The converter module electrical stress test fixing tool according to claim 6, characterized in that: The damper is a hydraulic cylinder or a pneumatic cylinder.

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