Multifunctional IGBT static test fixture and test system

Abstract

The utility model belongs to the technical field of IGBT test, and particularly relates to a multifunctional IGBT static test fixture and a test system, which comprise a control module, and a lifting mechanism and a detection mechanism which are electrically connected with the control module, the lifting mechanism is arranged below the detection mechanism; the lifting mechanism is suitable for bearing a to-be-tested device; and the control module is configured to control the lifting mechanism to bear the to-be-detected device to move upwards to the detection position of the detection mechanism and then control the detection mechanism to detect the to-be-detected device, so that the to-be-detected device is automatically connected with the detection mechanism, and the detection efficiency of the to-be-detected device is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to IGBT test technical field, and specifically relates to multifunctional IGBT static test fixture and test system. BACKGROUND

[0002] IGBT module needs to be tested in the production process, and the related test process needs to be connected with the probe board of the tester by human, so as to form the line connection between the IGBT module and the tester, and then facilitate the detection of the IGBT module, but the number of IGBT modules is large, and each IGBT module needs to be connected by human, which is time-consuming and laborious, resulting in low detection efficiency of the IGBT module.

[0003] Therefore, due to the technical problem of low detection efficiency of human operation during IGBT module detection, a multifunctional IGBT static test fixture and test system need to be designed.

[0004] It should be noted that the above information disclosed in the background section of the present application is only used to understand the background technology of the present application, and therefore, the above description is not considered as the information of the prior art. INVENTION CONTENTS

[0005] The embodiments of the present disclosure at least provide a multifunctional IGBT static test fixture and test system.

[0006] In a first aspect, the embodiments of the present disclosure provide a multifunctional IGBT static test fixture, comprising:

[0007] a control module, a lifting mechanism and a detection mechanism electrically connected with the control module;

[0008] The lifting mechanism is arranged below the detection mechanism;

[0009] The lifting mechanism is adapted to carry the device to be tested;

[0010] The control module is configured to control the lifting mechanism to carry the device to be tested to move upward to the detection position of the detection mechanism, and then control the detection mechanism to detect the device.

[0011] In an optional embodiment, the lifting mechanism comprises a cylinder assembly and a base;

[0012] The cylinder assembly is arranged on the platform;

[0013] The cylinder assembly is controlled by the control module;

[0014] The bottom of the base is connected with the jacking part of the cylinder assembly;

[0015] The top of the base is adapted to carry the device to be tested;

[0016] The control module is configured to control the cylinder assembly to lift the base.

[0017] In an alternative embodiment, the cylinder assembly is provided with a detection module, which is electrically connected to the control module;

[0018] The detection module is adapted to detect the distance of the cylinder assembly lifting the base;

[0019] The control module is configured to control the cylinder assembly to stop working according to the distance of the cylinder assembly lifting the base.

[0020] In an alternative embodiment, the top of the device to be tested is provided with a plurality of PIN pins.

[0021] In an alternative embodiment, the detection mechanism comprises a probe board and a testing machine;

[0022] The bottom surface of the probe board is provided with probes corresponding to the PIN pins;

[0023] The probe board is located above the base;

[0024] The probe board is connected to the testing machine, and the testing machine is electrically connected to the control module;

[0025] The testing machine detects the device to be tested and obtains detection data.

[0026] In an alternative embodiment, the probe board is arranged on a mounting bracket, and the mounting bracket is arranged on a platform;

[0027] The mounting bracket is provided with a through hole, and one side of the through hole is provided with an opening, which is located on the side wall of the mounting bracket;

[0028] The inner wall of the through hole is provided with a strip-shaped groove corresponding to one pair of side walls of the probe board, and one end of the strip-shaped groove is provided with an opening, which is located on the side wall of the mounting bracket;

[0029] The side wall of the probe board is inserted into the corresponding strip-shaped groove, so that the probe board is inserted into the through hole.

[0030] In an alternative embodiment, the control module is electrically connected to an alarm module;

[0031] The control module is configured to control the alarm module to work according to the detection data of the testing machine;

[0032] The base is provided with a weighing module, the weighing module is electrically connected with the control module, the data detected by the weighing module is used to judge whether the device to be measured is placed on the base, and the control module automatically controls the cylinder assembly to work after detecting that the device to be measured is placed on the base.

[0033] In an alternative embodiment, a key module is arranged on the platform, and the key module is electrically connected with the control module.

[0034] In an alternative embodiment, an interface module is arranged on the platform, and the interface module is electrically connected with the control module.

[0035] The interface module is adapted to be connected with an external terminal.

[0036] In a second aspect, the embodiments of the present disclosure further provide a test system using the multifunctional IGBT static test fixture, comprising:

[0037] A terminal is connected with the multifunctional IGBT static test fixture, and the terminal is adapted to receive the detection data sent by the multifunctional IGBT static test fixture.

[0038] The multifunctional IGBT static test fixture has the advantages that: the multifunctional IGBT static test fixture comprises a control module, and a lifting mechanism and a detection mechanism electrically connected with the control module; the lifting mechanism is arranged below the detection mechanism; the lifting mechanism is adapted to carry the device to be measured; the control module is configured to control the lifting mechanism to carry the device to be measured to move upwards to a detection position of the detection mechanism, and then control the detection mechanism to detect the device, thereby realizing automatic connection of the device to be measured and the detection mechanism, and improving the detection efficiency of the device to be measured.

[0039] Other features and advantages of the present application will be described in the following description, and some will become apparent from the description, or will be understood from the practice of the present application. The purpose and other advantages of the present application are achieved by the structures specifically pointed out in the specification and the drawings.

[0040] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the preferred embodiments are described in detail below, and the detailed description is made below with the help of the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0042] Figure 1 A structural schematic diagram of a multifunctional IGBT static test fixture is provided for the embodiments of the present disclosure.

[0043] Figure 2 A principle block diagram of a multifunctional IGBT static test fixture is provided for the embodiments of the present disclosure.

[0044] In the figure:

[0045] 1 lifting mechanism, 11 cylinder assembly, 12 base;

[0046] 2 detection mechanism, 21 probe plate, 22 mounting frame, 23 through hole, 24 strip-shaped groove;

[0047] 3 key module, 31 interface module;

[0048] 4 device to be tested;

[0049] 5 platform. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0051] As used herein, the phrases "in an embodiment", "according to an embodiment", "in some embodiments", and the like generally mean the fact that a particular feature, structure, or characteristic described after the phrase can be included in at least one embodiment of the present disclosure. Therefore, the particular feature, structure, or characteristic can be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example", "exemplary", and the like are used as an example, instance, or illustration. Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily interpreted as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example", "exemplary", and the like is intended to present the concept in a specific manner.

[0052] Some embodiments of the present application will be described in detail below in conjunction with the drawings. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0053] As Figure 2As shown, at least one disclosed embodiment provides a multifunctional IGBT static test fixture, comprising: a control module, and a lifting mechanism 1 and a detection mechanism 2 electrically connected with the control module; the lifting mechanism 1 is arranged below the detection mechanism 2; the lifting mechanism 1 is adapted to carry a device to be tested 4 (IGBT module); the control module is configured to control the lifting mechanism 1 to carry the device to be tested 4 to move upwards to the detection position of the detection mechanism 2, and then control the detection mechanism 2 to detect the device 4, thereby realizing the automatic connection of the device to be tested 4 and the detection mechanism 2, and improving the detection efficiency of the device to be tested 4.

[0054] As shown in the Figure 1 Lifting mechanism 1 comprises: a cylinder assembly 11 and a base 12; the cylinder assembly 11 is arranged on the platform 5; the cylinder assembly 11 is controlled by the control module; the bottom of the base 12 is connected with the jacking part of the cylinder assembly 11; the top of the base 12 is adapted to carry the device to be tested 4; the control module is adapted to control the cylinder assembly 11 to drive the base 12 to lift.

[0055] The base 12 and the jacking part of the cylinder assembly 11 can be connected in a plug-in manner, which can facilitate the replacement of the base 12. For example, the cylinder in the cylinder assembly 11 is provided with a jacking shaft that can be lifted, the top end of the jacking shaft can be connected with a lifting plate, a plurality of telescopic rods can be arranged around the cylinder, the top of each telescopic rod is also connected with the bottom surface of the lifting plate, and each telescopic rod is lifted synchronously when the jacking shaft drives the lifting plate to lift, so that the lifting plate can be lifted stably.

[0056] Optionally, the telescopic rods can be replaced by guide rods that pass through the lifting plate, the guide rods are vertically arranged to avoid the shaking and tilting of the lifting plate during the lifting process of the lifting plate, so that the lifting plate can be lifted stably.

[0057] Optionally, when the telescopic rods or guide rods are three, they can be arranged in a triangular manner to make the lifting plate lift stably.

[0058] Optionally, when the telescopic rods or guide rods are four, they can be arranged at the four corners of the lifting plate to make the lifting plate lift stably.

[0059] As some embodiments, a plurality of insertion slots can be formed on the top surface of the lifting plate, and a plurality of insertion columns can be arranged on the bottom surface of the base 12, the insertion columns can be inserted into the corresponding insertion slots, so that the base 12 is plugged on the lifting plate, and the movement of the base 12 can be avoided by the cooperation of the insertion columns and the insertion slots during the lifting process of the lifting plate.

[0060] Preferably, the base 12 is plugged by the cooperation of the insertion slots and the insertion columns, which facilitates the replacement of the base 12, so that the base 12 can be adapted to different devices to be tested 4.

[0061] The base 12 can be provided with a weighing module, the weighing module being electrically connected with the control module, and the data detected by the weighing module being used to determine whether the device under test 4 is placed on the base 12, and the control module can automatically control the cylinder assembly 11 to work after detecting that the device under test 4 is placed on the base 12.

[0062] In an alternative embodiment, the cylinder assembly 11 is provided with a detection module, the detection module being electrically connected with the control module; the detection module is adapted to detect the lifting distance of the base 12 driven by the cylinder assembly 11; and the control module is configured to control the cylinder assembly 11 to stop working according to the lifting distance of the base 12 driven by the cylinder assembly 11.

[0063] The detection module can be integrated with the cylinder assembly 11, i.e., a servo cylinder assembly 11, to achieve accurate control of the lifting distance of the jacking shaft.

[0064] The detection module can adopt a displacement sensor, which can be arranged on the platform 5 and can detect the lifting distance of the lifting plate.

[0065] Accurate control of the lifting distance of the jacking shaft can accurately achieve the connection of the PIN pin and the probe, avoid the PIN pin and the probe from being unable to be connected due to the PIN pin being lifted too small, or avoid the PIN pin and the probe from being damaged due to the PIN pin being lifted too large.

[0066] In an alternative embodiment, the top of the device under test 4 is provided with a plurality of PIN pins.

[0067] The PIN pins can be used to achieve the connection of the device under test 4 and the probe, and further achieve the connection of the device under test 4 and the testing machine.

[0068] In an alternative embodiment, the detection mechanism 2 includes a probe plate 21 and a testing machine; the bottom surface of the probe plate 21 is provided with probes corresponding to the PIN pins; the probe plate 21 is located above the base 12; the probe plate 21 is connected with the testing machine, and the testing machine is electrically connected with the control module; the testing machine detects the device under test 4 to obtain detection data; and the testing machine is an instrument for detecting IGBT modules, and the detection data is various detection data obtained when the instrument detects the IGBT modules.

[0069] The probes at the bottom of the probe plate 21 can correspond to the PIN pins of the device under test 4, so that the device under test 4 can be accurately connected with the probes.

[0070] In an alternative embodiment, the probe plate 21 is arranged on the mounting frame 22, and the mounting frame 22 is arranged on the platform 5; the mounting frame 22 is provided with a through hole 23, and one side of the through hole 23 is provided with an opening on the side wall of the mounting frame 22; the inner wall of the through hole 23 is provided with a strip-shaped slot 24 corresponding to one pair of side walls of the probe plate 21, and one end of the strip-shaped slot 24 is provided with an opening on the side wall of the mounting frame 22; the side wall of the probe plate 21 is inserted into the corresponding strip-shaped slot 24, so that the probe plate 21 is inserted into the through hole 23.

[0071] The probe plate 21 is provided with test channels connected to the testing machine, and the number of channels is matched according to the capacity of the testing machine.

[0072] One pair of side walls of the probe plate 21 can be inserted into the corresponding strip-shaped slot 24 to complete the insertion of the probe plate 21, which facilitates the replacement of the probe plate 21. When the to-be-tested device 4 is replaced, the number and position of the PIN pins of the to-be-tested device 4 will change. At this time, only the probe plate 21 needs to be replaced so that the probes on the new probe plate 21 correspond to the PIN pins of the new to-be-tested device 4, so that the new to-be-tested device 4 can also be detected, thereby increasing the application range of the multifunctional IGBT static test fixture and adapting to the detection of more models of to-be-tested devices 4.

[0073] In an alternative embodiment, the control module is electrically connected with an alarm module; the control module is configured to control the alarm module to work according to the detection data of the testing machine.

[0074] The alarm module can be a buzzer, and when the detection data is abnormal, the control module determines that the to-be-tested device 4 is abnormal at this time, and the control module alarms through the buzzer to remind the management personnel to check the to-be-tested device 4.

[0075] In an alternative embodiment, the platform 5 is provided with a key module 3, and the key module 3 is electrically connected with the control module.

[0076] The key module 3 can be provided with a start key to start the multifunctional IGBT static test fixture.

[0077] The key module 3 can also be provided with a plurality of LED modules of different colors to display the state of the multifunctional IGBT static test fixture at this time.

[0078] The control module can be but is not limited to PLC.

[0079] In an alternative embodiment, the platform 5 is provided with an interface module 31, and the interface module 31 is electrically connected with the control module; the interface module 31 is adapted to connect an external terminal.

[0080] The interface module 31 can include an output part and an input part, both of which are connected with an external terminal, signals sent by the external terminal are received through the input part, and detection data detected by the testing machine is sent to the terminal through the output part.

[0081] The terminal can be a computer or the like, and when the device under test 4 is replaced, the distance required to be raised corresponding to the device under test 4 will change, at which time the computer can be used to control the air cylinder assembly 11 to adjust the lifting distance of the base 12 driven by the air cylinder assembly 11, so that the new lifting distance meets the requirements of the device under test 4 at this time.

[0082] During the packaging process of the IGBT module, electrical performance testing is required, and when the IGBT module (multi-channel IGBT module) is placed on the base 12 (the feeding and discharging of the IGBT module can be automatically realized by a mechanical hand or the like), the control module can start the air cylinder assembly 11 according to the detection data of the weighing module, the air cylinder assembly 11 drives the base 12 to rise, so that the PIN pin of the device under test 4 contacts the probe, realizing the connection of the circuit, the control module judges that the PIN pin has contacted the probe according to the distance of the base 12 driven by the air cylinder assembly 11 to rise, the control module controls the air cylinder assembly 11 to stop working, and the control module sends a "start" signal to the testing machine, and the testing machine starts detection, and when the testing machine detects that the device under test 4 is normal, the testing machine sends a "good" signal to the control module, at which time the control module controls the air cylinder assembly 11 to drive the base 12 to descend, and after the base 12 is lowered to the position, the device under test 4 can be automatically taken off by a mechanical hand or the like, and then a new device under test 4 is placed, and if the testing machine judges that the device under test 4 is abnormal, the testing machine sends an "NG" signal to the control module, the control module keeps the air cylinder assembly 11 different according to the "NG" signal, and controls the alarm module to send an abnormal notification sound, reminding the management personnel to check.

[0083] The LED modules of different colors can be three, respectively displaying red, yellow and green, and when the testing machine is in the testing process, the yellow corresponding LED module is lit, the green corresponding LED module is lit when the testing machine judges that the device under test 4 is normal, and the red corresponding LED module is lit when the testing machine judges that the device under test 4 is abnormal.

[0084] The PLC IO port communication can realize the transmission of data to receive and send the detection data of each sensor and the like; the PLC IO port has the function of interface expansion to adapt to more cases and realize stronger functions.

[0085] The same batch of IGBT modules are packaged in the same way, and when the batch is replaced, the base 12 and the probe plate 21 can be replaced to adapt to the detection of new IGBT modules

[0086] The automatic control improves the testing efficiency and the utilization rate of the equipment.

[0087] The clamp can correspond to different package forms by replacing the upper probe board 21 and the base 12, test different IGBT modules, facilitate the switching of the device under test 4 and the selection of the test machine connection, and improve the test efficiency and equipment utilization.

[0088] At least one other disclosed embodiment also provides a test system using the above-mentioned multifunctional IGBT static test clamp, comprising: a terminal connected with the multifunctional IGBT static test clamp, and the terminal is adapted to receive the detection data sent by the multifunctional IGBT static test clamp.

[0089] To sum up, the multifunctional IGBT static test clamp comprises a control module, a lifting mechanism 1 and a detection mechanism 2 electrically connected with the control module; the lifting mechanism 1 is arranged below the detection mechanism 2; the lifting mechanism 1 is adapted to carry the device under test 4; the control module is configured to control the lifting mechanism 1 to connect the carried device under test 4 with the detection mechanism 2, and the detection mechanism 2 detects the device under test 4, thereby realizing the automatic connection of the device under test 4 with the detection mechanism 2 and improving the detection efficiency of the device under test 4.

[0090] Based on the above ideal embodiments of the present application, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content in the specification, and must be determined according to the scope of the claims.

Claims

1. A multifunctional IGBT static test fixture, characterized in that, include: A control module, and a lifting mechanism (1) and a detection mechanism (2) electrically connected to the control module. The lifting mechanism (1) is located below the detection mechanism (2); The lifting mechanism (1) is adapted to carry the device under test (4); The control module is configured to control the lifting mechanism (1) to carry the device under test (4) to move upward to the detection position of the detection mechanism (2), and then control the detection mechanism (2) to detect the device (4).

2. The multifunctional IGBT static test fixture as described in claim 1, characterized in that: The lifting mechanism (1) includes: a cylinder assembly (11) and a base (12); The cylinder assembly (11) is mounted on the platform (5); The cylinder assembly (11) is controlled by the control module; The bottom of the base (12) is connected to the lifting part of the cylinder assembly (11); The top of the base (12) is adapted to support the device under test (4). The control module is configured to control the cylinder assembly (11) to drive the base (12) to rise and fall.

3. The multifunctional IGBT static test fixture as described in claim 2, characterized in that: The cylinder assembly (11) is provided with a detection module, which is electrically connected to the control module; The detection module is adapted to detect the distance that the cylinder assembly (11) drives the base (12) to rise and fall; The control module is configured to stop the cylinder assembly (11) from working based on the distance by which the cylinder assembly (11) drives the base (12) to rise and fall.

4. The multifunctional IGBT static test fixture as described in claim 1, characterized in that: The device under test (4) has several pins on its top.

5. The multifunctional IGBT static test fixture as described in claim 2, characterized in that: The testing mechanism (2) includes: a probe plate (21) and a testing machine; The bottom surface of the probe plate (21) is provided with probes corresponding to the PIN pins; The probe plate (21) is located above the base (12); The probe plate (21) is connected to the testing machine, and the testing machine is electrically connected to the control module; The testing machine performs tests on the device under test (4) and obtains test data.

6. The multifunctional IGBT static test fixture as described in claim 5, characterized in that: The probe plate (21) is mounted on the mounting bracket (22), which is mounted on the platform (5); The mounting bracket (22) has a through hole (23), one side of which is open and located on the side wall of the mounting bracket (22); The inner wall of the through hole (23) is provided with a strip groove (24) corresponding to a pair of side walls of the probe plate (21). One end of the strip groove (24) is open and the opening is located on the side wall of the mounting bracket (22). The sidewall of the probe plate (21) is inserted into the corresponding strip groove (24) so ​​that the probe plate (21) is inserted into the through hole (23).

7. The multifunctional IGBT static test fixture as described in claim 5, characterized in that: The control module is electrically connected to an alarm module; The control module is configured to control the alarm module to operate based on the detection data from the testing machine; A weighing module is provided on the base (12). The weighing module is electrically connected to the control module. The weighing module detects data to determine whether the device under test (4) is placed on the base (12). When the device under test (4) is detected to be placed on the base (12), the control module automatically controls the cylinder assembly (11) to work.

8. The multifunctional IGBT static test fixture as described in claim 2, characterized in that: The platform (5) is provided with a button module (3), which is electrically connected to the control module.

9. The multifunctional IGBT static test fixture as described in claim 2, characterized in that: An interface module (31) is provided on the platform (5), and the interface module (31) is electrically connected to the control module; The interface module (31) is adapted to connect to an external terminal.

10. A test system employing the multifunctional IGBT static test fixture as described in any one of claims 1-9, characterized in that, include: The terminal is connected to a multi-functional IGBT static test fixture and is adapted to receive test data sent by the multi-functional IGBT static test fixture.

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