Measuring gauge for measuring radian of bottom plate of IGBT (Insulated Gate Bipolar Translator) module

Abstract

The utility model relates to a measuring gauge for measuring the radian of a bottom plate of an IGBT (Insulated Gate Bipolar Translator) module, which comprises a measuring positioning plate for placing and positioning a material to be measured; the dial indicator probe rod is matched with the measurement positioning plate and is used for pressing down and transmitting radian information after the material is put into the measurement positioning plate; the dial indicator body is connected with the dial indicator probe rod and used for displaying the radian value; the supporting structure comprises an upper supporting plate and a stand column and is used for supporting the whole tool and ensuring the stability of measurement; wherein a radian positioning edge is designed on the measurement positioning plate and is used for being in contact with the lower surface of a material bottom plate and positioning. The device is compact and reasonable in structure, is convenient to operate, and achieves the quick and accurate measurement of the radian of the bottom plate of the IGBT module through the design of the measurement positioning plate, the combined design of the dial gauge probe rod and the gauge body, and the flexibility and adaptability of the height. The measurement gauge not only improves the accuracy and efficiency of measurement, but also provides powerful support for the production and quality control of the IGBT module.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of measuring gauge, especially a kind of measuring gauge for measuring the arc of IGBT module bottom plate. BACKGROUND

[0002] In the process of power device design, improving the heat dissipation capacity has become the core link of thermal management, which is crucial to ensure the efficient and stable operation of the device. As the core component in the field of power electronics, the heat dissipation performance of IGBT module directly affects the working efficiency and reliability of the module. Traditionally, in order to achieve close contact between the IGBT module bottom plate and the heat sink, and to avoid the generation of gaps, thus ensuring good heat dissipation effect, manufacturers have adopted the method of brushing heat-conducting silicone grease between the two. However, due to the limitations of machining precision and welding stress, the module bottom plate often deforms, especially arches upward, which not only destroys the close contact between the bottom plate and the heat sink, but also leads to the decline of heat dissipation performance.

[0003] To address this issue, IGBT module manufacturers have adopted an innovative strategy, intentionally designing the bottom plate with a certain downward arc. After the screw is tightened, this arc design can make the bottom plate deform under stress, thus forming a close fit with the heat sink, effectively improving the heat dissipation efficiency. This practice has become a general standard in the industry. However, the challenge that follows is how to quickly and accurately measure the arc of the bottom plate to ensure that each module can achieve the expected heat dissipation performance.

[0004] The traditional method of measuring the arc of the bottom plate has many shortcomings.

[0005] 1. The measurement tool is usually designed as an upper type, i.e. the tool is located above the bottom plate for measurement. However, after the IGBT module undergoes the welding and bonding process, the inner surface of the bottom plate will form many complex and non-touchable structures, which makes the upper measurement method no longer applicable, especially in the debugging and sampling inspection stages of the production process.

[0006] 2. Since the arc of the IGBT module bottom plate differs in different directions, it is necessary to measure the arc in two perpendicular directions, i.e. the long axis and the short axis. However, traditional measurement tools often cannot meet this demand, resulting in low measurement efficiency and inaccurate results.

[0007] In summary, how to design a measuring gauge that can adapt to complex measurement environment and simultaneously measure the arc in the long axis and short axis directions has become a technical problem that needs to be solved in IGBT module production and quality control.

[0008] Therefore, we propose a measuring gauge for measuring the arc of IGBT module bottom plate. UTILITY MODEL CONTENTS

[0009] The applicant provides a measuring gauge for measuring the arc of an IGBT module bottom plate in view of the defects in the prior production technology.

[0010] The technical scheme adopted by the utility model is as follows:

[0011] A measuring gauge for measuring the arc of an IGBT module bottom plate comprises:

[0012] A measuring positioning plate is used for placing and positioning the material to be measured.

[0013] A micrometer probe is matched with the measuring positioning plate and is used for pressing down and transmitting the arc information after the material is placed in the measuring positioning plate.

[0014] A micrometer dial is connected with the micrometer probe and is used for displaying the arc value.

[0015] A support structure comprises an upper support plate and a stand column and is used for supporting the entire tooling and ensuring the stability of measurement.

[0016] A tooling bottom plate is used as the base of the tooling and bears all the components.

[0017] The measuring positioning plate is designed with an arc positioning edge and is used for contacting and positioning the bottom plate of the material, thereby ensuring the accuracy of measurement.

[0018] In one embodiment, the arc positioning edge on the measuring positioning plate is provided as two groups according to the measurement requirement, one group is used for measuring the arc in the long axis direction, and the other group is used for measuring the arc in the short axis direction, and the spacing between the two groups of arc positioning edges is set according to the specification.

[0019] In one embodiment, the number of micrometer probes can be adjusted according to the measurement requirement, and four micrometer probes are used to measure simultaneously for the bottom plate with a PIN pin structure, so as to realize the reading of the arc value at multiple measurement points at the same time.

[0020] In one embodiment, the support structure further comprises a positioning column and a support ball, the positioning column is used for controlling the position of the material, and the support ball is used for supporting the material and reducing the contact area with the bottom plate of the material, so as to reduce the uncertainty caused by the contact size error.

[0021] In one embodiment, the micrometer dial can quickly read the arc value, which is convenient for comparison and rapid inspection.

[0022] In one embodiment, the measuring positioning plate can be replaced to adapt to the measurement requirement of different products, and the micrometer and the remaining base part can be universal, thereby improving the flexibility and use efficiency of the tooling.

[0023] The utility model discloses the following advantages:

[0024] The utility model discloses compact, reasonable, convenient operation, through the combination design of measuring positioning plate design, micrometer probe and the table body and the flexibility and adaptability of height, realized the quick, accurate measurement of IGBT module bottom plate camber. This kind of measuring gauge not only improves the accuracy and efficiency of measurement, but also provides strong support for the production and quality control of IGBT module. Its compact structure, simple operation, accurate measurement, high efficiency, strong flexibility and other advantages make it have important application value in the production and quality control of power electronic industry, and make positive contributions for the efficient and stable operation of IGBT module and the improvement of heat dissipation performance.

[0025] Meanwhile, the utility model still has the following advantages:

[0026] The measuring gauge realizes the accurate positioning and stable support of IGBT module bottom plate through the design of unique measuring positioning plate. The measuring positioning plate is accurately processed according to the shape and size of the bottom plate, ensures the close cooperation between the bottom plate, effectively avoids the shaking and deviation in the measurement process. This design not only improves the accuracy of measurement, but also makes the gauge adapt to complex measurement environment, such as the existence of non-touchable structure in the inner surface of the bottom plate. Through the accurate camber positioning edge design, the gauge can accurately reflect the camber of the bottom plate, and provide reliable data support for subsequent production and quality control.

[0027] The measuring gauge adopts the combination design of micrometer probe and micrometer table body, realizes the quick reading and comparison of camber value. The micrometer probe has high sensitivity and accuracy, can accurately transmit the camber information of the bottom plate. And the micrometer table body is through the high-precision display device and reading system, so that the operator can quickly read out the camber value, and carry out subsequent data processing and analysis. This design not only improves the efficiency of measurement, but also makes the measurement result more intuitive and accurate, helps to find and solve the problems in the production process in time.

[0028] The measuring gauge also has high flexibility and adaptability. The measuring positioning plate can be replaced according to the measurement requirements of different products, and the micrometer and the rest of the base can be universal, which reduces the cost and maintenance difficulty of tooling. At the same time, through the optimization of support structure and positioning mode, the gauge can stably support the whole tooling, avoids the measurement error caused by uneven stress or unstable structure. This design makes the gauge adapt to the measurement requirements of IGBT module bottom plate of different models and specifications, improves the universality and use efficiency of tooling. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1The structure schematic diagram of the utility model.

[0030] Figure 2 The structure schematic diagram of the utility model in the material state of being put in.

[0031] Figure 3 The structure schematic diagram of the utility model in the material state of being put in in different directions.

[0032] Figure 4 The structure schematic diagram of another measuring positioning plate of the utility model.

[0033] Figure 5 The structure schematic diagram of the material in the utility model.

[0034] Figure 6 The top view of the material structure in the utility model.

[0035] Figure 7 The side view of the material structure in the utility model.

[0036] Wherein: 1, measuring positioning plate, 2, dial indicator probe rod, 3, upper support plate, 4, stand, 5, dial indicator body, 6, tool base plate, 7, material, 8, long axis arc positioning edge, 9, short axis arc positioning edge, 10, positioning column, 11, support ball. Specific embodiments

[0037] The specific embodiments of the utility model will be described below in combination with the drawings.

[0038] The embodiment provides a measuring gauge for measuring the arc of IGBT module bottom plate, which is exquisite in structure, easy to operate, can quickly and accurately measure the arc of IGBT module bottom plate, and provides strong support for the production and quality control of IGBT module.

[0039] The specific embodiments of the utility model will be described below in combination with the drawings. Figures 1-7 The embodiment will be described in detail.

[0040] In the embodiment, Figures 4-7 The specific structure of the material.

[0041] The measurement gauge of the embodiment includes a measurement positioning plate 1 for placing and positioning the material to be measured, ensuring the stability of the material's position during measurement, thereby improving the accuracy of the measurement. The design of the measurement positioning plate 1 takes into account the shape and size of the material, and through precise processing and manufacturing, the positioning plate can tightly fit with the material, avoiding shaking and deviation during measurement, further improving the accuracy of the measurement. At the same time, the measurement positioning plate 1 is designed with arc positioning edges, which contact and position the bottom of the material plate, ensuring the accuracy of the measurement. The design of the arc positioning edges takes into account the arc characteristics of the IGBT module bottom plate, and through the tight contact with the bottom plate, the arc situation of the bottom plate can be accurately reflected.

[0042] Further, the measurement gauge of the embodiment also includes a micrometer probe 2 and a micrometer body 5. The micrometer probe 2 cooperates with the measurement positioning plate 1 to press down and transmit the arc information after the material is placed in the measurement positioning plate 1. The design of the micrometer probe 2 takes into account the sensitivity and accuracy of the measurement, and through precise processing and debugging, the probe can accurately transmit the arc information of the material. The micrometer body 5 is connected with the micrometer probe 2 to display the arc value. The design of the micrometer body 5 takes into account the clarity and accuracy of the reading, and through the use of high-precision display devices and reading systems, the operator can quickly read the arc value and perform subsequent data processing and analysis.

[0043] The measurement gauge of the embodiment also includes a support structure composed of an upper support plate 3 and a column 4, which is used to support the entire tooling and ensure the stability of the measurement. The design of the support structure takes into account the overall weight of the tooling and the stress condition during measurement, and through reasonable structural design and material selection, the support structure can stably support the entire tooling, avoiding measurement errors caused by uneven stress or unstable structure. The processing and manufacturing of the support structure also undergoes strict quality control, ensuring that it can maintain stable performance during use, providing reliable protection for measurement.

[0044] At the same time, the tooling bottom plate 6 serves as the base of the tooling, bearing all the above components, and through precise installation and debugging, ensuring the stability and accuracy of the entire tooling.

[0045] It is worth mentioning that the arc positioning edges on the measurement positioning plate 1 of the embodiment are set as two groups according to the measurement requirements, which are the long-axis arc positioning edge 8 and the short-axis arc positioning edge 9, respectively fitting the different bottom surfaces of the material 7.

[0046] Wherein the long axis arc positioning edge 8 is used to measure the arc in the long axis direction, and the short axis arc positioning edge 9 is used to measure the arc in the short axis direction. This design takes into account the arc characteristics of the IGBT module bottom plate in different directions, and by measuring the arcs of the long axis and short axis respectively, the arc conditions of the bottom plate can be more comprehensively understood, providing more accurate data support for subsequent production and quality control. The spacing between the two sets of arc positioning edges is also precisely set according to the specification, ensuring the accuracy and consistency of the measurement.

[0047] In actual application, the operator can adjust the number of micrometer probes 2 as needed. For a bottom plate with a PIN pin structure, four micrometer probes 2 are used to measure simultaneously, which can realize simultaneous reading of the arc value at multiple measurement points. This design improves the efficiency of measurement and shortens the measurement time, providing strong support for large-scale production and quality control. The spacing and angle between the probes are also optimized to avoid measurement errors caused by mutual interference.

[0048] In addition, the support structure of the embodiment also includes positioning columns 10 and support beads 11. The positioning columns 10 are used to control the position of the material and ensure the stability of the material position during measurement. The support beads 11 are used to support the material and reduce the contact area with the material bottom plate, so as to reduce the uncertainty caused by the contact size error. This design takes into account the error sources in the measurement process, and by reducing the contact area and optimizing the support method, the influence of error on the measurement result is reduced. The support beads 11 ensure stable performance during long-term use, avoiding measurement errors caused by wear or deformation. At the same time, the position of the support beads 11 is confirmed according to the design drawing, ensuring the accuracy of the measurement.

[0049] The micrometer dial 5 of the embodiment can quickly read out the arc value, which is convenient for comparison and rapid inspection. This design improves the convenience of measurement, so that the operator can quickly obtain the measurement result and perform subsequent data processing and analysis. The micrometer dial 5 also has data storage and transmission function, which can transmit the measurement result to the computer or other equipment in real time, providing convenience for remote monitoring and data analysis. At the same time, the display device of the micrometer dial 5 adopts high resolution and high brightness design, so that the arc value can be clearly read in the case of dim light or complex environment.

[0050] In addition, the measurement positioning plate 1 of the present embodiment is replaceable to adapt to the measurement needs of different products. This design improves the flexibility and efficiency of the tool, enabling the operator to quickly replace the positioning plate according to different measurement needs without making major adjustments to the entire tool. The replacement process of the measurement positioning plate 1 is also carefully designed to ensure convenience and accuracy. At the same time, the positioning plate is manufactured and processed in strict accordance with quality control standards to ensure its stability and reliability during use. The dial gauge and the rest of the base, including the upper support plate 3, the column 4, and the tool base plate 6, can be used universally, reducing the cost and maintenance difficulty of the tool.

[0051] In practical applications, the measurement gauge of the present embodiment exhibits significant advantages. First, its compact structure and simple operation enable quick and accurate measurement of the curvature of the IGBT module base plate. Second, by using the design of the dial gauge probe 2 and the dial gauge body 5, the curvature values can be quickly read and compared, improving the efficiency and convenience of measurement. In addition, the replaceable design of the measurement positioning plate 1 enables the tool to adapt to the measurement needs of different products, improving the flexibility and efficiency of the tool. Finally, by using the ball positioning method, the measurement error is minimized, improving the accuracy and reliability of the measurement.

[0052] Specifically, when using the measurement gauge of the present embodiment for measurement, the operator only needs to place the material to be measured into the measurement positioning plate 1 and adjust the position of the dial gauge probe 2 to make it closely contact with the bottom of the material base plate. Then, by observing the curvature value displayed on the dial gauge body 5, the measurement result can be quickly obtained. At the same time, since the curvature positioning edge on the measurement positioning plate 1 is set as two groups according to the measurement needs, the operator can measure the curvature of the long axis and the short axis respectively, thereby more comprehensively understanding the curvature of the base plate. In addition, for the base plate with PIN pin structure, four dial gauge probes 2 are used for simultaneous measurement, which can realize simultaneous reading of curvature values at multiple measurement points, further improving the efficiency and accuracy of measurement.

[0053] In summary, the measurement gauge for measuring the curvature of the IGBT module base plate (including the measurement positioning plate 1, the dial gauge probe 2, the upper support plate 3, the column 4, the dial gauge body 5, and the tool base plate 6) of the present embodiment has the advantages of compact structure, simple operation, accurate measurement, high efficiency, and strong flexibility, and is an indispensable tool in IGBT module production and quality control. By using the measurement gauge of the present embodiment, the production efficiency and product quality of IGBT modules can be effectively improved, making a positive contribution to the development and progress of the power electronics industry.

[0054] The above description is an explanation of the present application, not a limitation of the present application, and the scope of the present application is defined in the claims. Any modification can be made within the scope of the present application.

Claims

1. A measuring gauge for measuring the curvature of an IGBT module base plate, characterized by, The utility model relates to a kind of measurement positioning plate, including: Measuring positioning plate for placing material to be measured and positioning; Dial indicator probe rod, cooperate with measuring positioning plate, for after material is placed into measuring positioning plate, press down and transfer radian information; Dial indicator dial, connected with dial indicator probe rod, for displaying radian value; Supporting structure, including upper support plate and column, for supporting the whole tooling and ensuring the stability of measurement; Wherein, measuring positioning plate is designed with radian positioning edge, for contact with the bottom of material bottom plate and positioning, ensure the accuracy of measurement.

2. The measuring tool for measuring the arc of the bottom plate of the IGBT module according to claim 1, wherein The radian positioning edge on the measuring positioning plate is set as two groups according to the measurement requirement, one group is used for measuring the radian in the long axis direction, and the other group is used for measuring the radian in the short axis direction, and the spacing between the two groups of radian positioning edges is set according to the specification.

3. The measuring tool for measuring the arc of the base plate of the IGBT module according to claim 1, wherein The number of dial indicator probe rods can be adjusted according to the measurement requirement. For the bottom plate with PIN needle structure, four dial indicator probe rods are used to measure simultaneously to realize the simultaneous reading of radian values at multiple measurement points.

4. The measuring tool for measuring the curvature of the base plate of an IGBT module according to claim 1, wherein The supporting structure further includes positioning column and supporting ball, the positioning column is used to control the position of the material, and the supporting ball is used to support the material and reduce the contact area with the material bottom plate.

5. The measuring gauge for measuring the curvature of the bottom plate of an IGBT module according to claim 1, wherein The dial indicator dial can quickly read out the radian value.

6. The measuring gauge for measuring the curvature of the bottom plate of an IGBT module according to claim 1, wherein The measuring positioning plate can be replaced.

7. The gauge of claim 1, wherein, It also includes tooling bottom plate as the base of the tooling.

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