Product placement detection system for power device test

Abstract

The utility model relates to the technical field of power device testing, in particular to a product placement detection system for power device testing. Comprising a PCB, a detection module used for placing a power device is integrated on the PCB, and the detection module comprises a conductive layer used for conducting the power device; the test module is used for detecting the on-off of a circuit between the conductive layer and a pin of the power device through a current sensor and generating an on-off result; according to the utility model, through the LED interface provided on the control unit, the on / off of the power device and the conductive contact is displayed through the on / off of the LED lamp, the control unit analyzes and processes the positioning result by receiving the positioning result generated by the positioning module, and the analysis and processing result is displayed through the display module. The testing personnel can conveniently and timely check whether the operation is wrong or whether the power device and the testing tool are damaged, and the situation that the working efficiency of the testing personnel is reduced due to the fact that abnormal reasons are checked again when problems occur in the testing process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of power device testing, in particular to a product placement detection system for power device testing. Background Art

[0002] Power devices are semiconductor devices that are specialized for power processing. Power devices need to undergo various parameter tests before leaving the factory and can only leave the factory after passing the inspection. When testing power devices, the pins of the power devices need to be in full contact with the detection device to test accurate parameter data. In the process of testing power devices, the pins and probes may not be in full contact due to failure of the detection device, defects in the pins of the power device, or errors by the operator, resulting in abnormal test data. The tester needs to re-check the cause of the abnormality, which reduces the tester's work efficiency. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a product placement detection system for power device testing, which solves the problem that the pins and probes are not in complete contact due to a malfunction of the test instrument, a defect in the power device pins, or an operator's error, resulting in abnormal test data, and the tester needs to recheck the cause of the abnormality, thereby reducing the tester's work efficiency. The utility model has the advantage of facilitating the tester to detect the placement accuracy of the power device to be tested and whether the power device and the test equipment are damaged.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A product placement detection system for power device testing, comprising a PCB board, wherein a detection module for placing power devices is integrated on the PCB board, wherein the detection module comprises a conductive layer for conducting the power device; a test module for detecting the continuity of the circuit between the conductive layer and the power device pins through a current sensor, and generating a continuity result; a positioning module for locating an abnormal contact position between the pins and the conductive layer according to the continuity result generated by the test module, and generating a positioning result; and a control unit for establishing a communication connection with the detection module is also integrated on the PCB board, wherein the control unit is used to receive the positioning result generated by the positioning module, and process the positioning result to generate a display result.

[0006] Furthermore, a display module communicating with the control unit is integrated on the PCB board, and the display module is used to receive and display a display result generated by the control unit.

[0007] Furthermore, the control unit is also used to send a test request to the test device according to the on-off result generated by the test module; the control unit includes a positioning analysis module for receiving the positioning result generated by the positioning module and analyzing and processing the positioning result; and a test request module for receiving the on-off result generated by the test module and making a test request according to the on-off result.

[0008] Furthermore, a fixing component for fixing the power device is also provided on the PCB board, and the fixing component includes a fixing frame, and the fixing frame is fixedly connected to the PCB board by bolts. A plurality of test holes are opened on the fixing frame, and the size of the test holes is adapted to the size of the pins of the power device.

[0009] Furthermore, the conductive layer includes a plurality of conductive contacts, and the conductive contacts are made of conductive gel.

[0010] Further, the position of the test hole corresponds to the position of the conductive contact.

[0011] Furthermore, the control unit adopts a chip of model LT3599.

[0012] Compared with the prior art, the utility model provides a product placement detection system for power device testing, which has the following beneficial effects:

[0013] 1. The utility model uses the LED interface provided on the control unit to display the on / off of the power device and the conductive contact by turning on and off the LED light. The control unit receives the positioning result generated by the positioning module, analyzes and processes the positioning result, and displays the analysis and processing result through the display module, so that the test personnel can check whether the operation is wrong or whether the power device and the test equipment are damaged in time, avoid problems in the test process and then check the abnormal cause, which reduces the work efficiency of the test personnel.

[0014] 2. The utility model can obtain the on-off result of whether the power device pins and the conductive contacts are conductive according to the test module. The positioning module adopts a built-in algorithm. When the test result of the test module is a non-conductive state, the corresponding conductive contact number can be obtained by obtaining the current sensor pin number, and the abnormal conductive contact number information is used to generate a positioning result, which is convenient for subsequent analysis and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 This is a principle block diagram of a product placement detection system for power device testing of the utility model;

[0017] Figure 2 This is a principle block diagram of the communication between the detection module and the control unit of the utility model;

[0018] Figure 3 It is a top view schematic diagram of the fixing assembly of the utility model.

[0019] In the figure:

[0020] 1. Detection module; 11. Conductive layer; 12. Test module; 13. Positioning module;

[0021] 2. Control unit; 21. Positioning analysis module; 22. Test request module;

[0022] 3. Display module;

[0023] 4. Fixing assembly; 41. Fixing bracket; 42. Testing hole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Power devices are semiconductor devices that are specialized for power processing. Power devices need to undergo various parameter tests before leaving the factory and can only leave the factory after passing the inspection. When testing power devices, the pins of the power devices need to be in full contact with the detection device in order to test out accurate parameter data.

[0026] Please refer to Figure 1-Figure 3In order to solve the problem that the pins and probes are not fully in contact due to instrument failure, power device pin defects or operator errors, resulting in abnormal test data, the tester needs to re-check the abnormal cause, which reduces the tester's work efficiency. This embodiment proposes a product placement detection system for power device testing. Through the LED interface provided on the control unit, the on and off of the LED light are displayed to display the on and off of the power device and the conductive contact. The control unit receives the positioning result generated by the positioning module, analyzes and processes the positioning result, and displays the analysis and processing result through the display module, so that the tester can check whether the operation is wrong or the power device and the test tool are damaged in time, so as to avoid problems in the test process and then check the abnormal cause, which reduces the tester's work efficiency. A detection module 1 for placing a power device is integrated on the PCB board. The detection module 1 includes a conductive layer 11 for conducting the power device. The conductive layer 11 includes a plurality of conductive contacts. The conductive contacts use conductive gel. The power device is turned on by contacting the pins on the power device with the conductive contacts. The conductive contacts are numbered. The circuit is distinguished to facilitate the location of the abnormal conduction and the test of the relevant parameters of the power device; the test module 12 detects the continuity of the line between the conductive layer 11 and the power device pin through the current sensor, and generates the continuity result. The current sensor adopts a chip with the model HS810, and the current sensor is connected in parallel at the connection between the power device pin and the conductive contact, and the pin number of the current input interface of the current sensor corresponds to the number of the conductive contact, so as to facilitate the location of the abnormality, and detect whether there is current flowing through the current sensor, and then judge whether the power device pin and the conductive contact are conductive; according to the continuity result generated by the test module 12, the abnormal contact position of the pin and the conductive layer 11 is located, and the positioning module 13 generates the positioning result. According to the test module 12, the continuity result of whether the power device pin and the conductive contact are conductive can be obtained. The positioning module 13 adopts a built-in algorithm. When the test result of the test module 12 is not conductive, the corresponding conductive contact number can be obtained through the current sensor pin number, and the abnormal conductive contact number information is used to generate a positioning result, which is convenient for subsequent analysis and processing.

[0027] The PCB board also integrates a control unit 2 that establishes a communication connection with the detection module 1, and is used to receive the positioning result generated by the positioning module 13, and processes the positioning result to generate a display result. The control unit 2 uses a chip with model LT3599. The PCB board also integrates a display module 3 that establishes a communication connection with the control unit 2. The display module 3 is used to receive and display the display result generated by the control unit 2. The display module 3 uses an LED interface provided on the control unit 2 to display the on and off of the power device and the conductive contact by turning the LED light on and off. The control unit 2 receives the positioning result generated by the positioning module 13, analyzes and processes the positioning result, and displays the analysis and processing result through the display module 3, so that the test personnel can check whether the operation is wrong or whether the power device and the test tool are damaged in time.

[0028] The control unit 2 is also used to send a test request to the test equipment according to the on-off result generated by the test module 12; the control unit 2 includes a positioning analysis module 21 that receives the positioning result generated by the positioning module 13 and analyzes and processes the positioning result. The positioning analysis module 21 uses a built-in algorithm to correspond the positioning result of the abnormal conductive contact number to the corresponding LED display to remind the tester of the location of the abnormality; the test request module 22 is used to receive the on-off result generated by the test module 12 and make a test request according to the on-off result. The test request module 22 uses a built-in algorithm to process the test result of the conduction of the test module 12. When the test result of the test module 12 is conduction, the on-off result of conduction is sent to the control unit 2. After receiving the on-off result of conduction, the control unit 2 sends a test request to the test equipment through the test request module 22 to proceed to the next test stage, which can save the tester time for inspection and prevent the tester from finding abnormal test data during the test, and re-checking whether the test equipment or power device is damaged and the contact problem between the power device and the conductive contact.

[0029] The PCB board is also provided with a fixing component 4 for fixing the power device. The fixing component 4 includes a fixing frame 41. The power device is fixed on the PCB test board by setting the fixing frame 41. The fixing frame 41 is fixedly connected to the PCB board by bolts. The fixing frame 41 can be fastened and disassembled and replaced by bolts, and the conductive contacts can be inspected and maintained. A plurality of test holes 42 are opened on the fixing frame 41. The size of the test holes 42 is adapted to the size of the pins of the power device. The position of the test holes 42 corresponds to the position of the conductive contacts. The power device contacts the conductive contacts through the test holes 42, and the power device is fixed on the PCB test board to test relevant parameters.

[0030] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A product placement detection system for power device testing, comprising a PCB board, characterized in that: The PCB board is integrated with a detection module (1) for placing a power device, the detection module (1) comprising a conductive layer (11) for conducting the power device; a test module (12) for detecting the continuity of the circuit between the conductive layer (11) and the pin of the power device through a current sensor, and generating a continuity result; and a positioning module (13) for locating an abnormal contact position between the pin and the conductive layer (11) according to the continuity result generated by the test module (12), and generating a positioning result; The PCB board also integrates a control unit (2) that establishes a communication connection with the detection module (1), and the control unit (2) is used to receive the positioning result generated by the positioning module (13), and process the positioning result to generate a display result.

2. The product placement detection system for power device testing according to claim 1, characterized in that: The PCB board also integrates a display module (3) that establishes a communication connection with the control unit (2), and the display module (3) is used to receive and display a display result generated by the control unit (2).

3. The product placement detection system for power device testing according to claim 1, characterized in that: The control unit (2) is also used to send a test request to the test device according to the on-off result generated by the test module (12); the control unit (2) comprises a positioning analysis module (21) for receiving the positioning result generated by the positioning module (13) and analyzing and processing the positioning result; and a test request module (22) for receiving the on-off result generated by the test module (12) and making a test request according to the on-off result.

4. The product placement detection system for power device testing according to claim 1, characterized in that: The PCB board is also provided with a fixing component (4) for fixing the power device, the fixing component (4) comprising a fixing frame (41), the fixing frame (41) being fixedly connected to the PCB board via bolts, the fixing frame (41) being provided with a plurality of test holes (42), the size of the test holes (42) being adapted to the size of the pins of the power device.

5. The product placement detection system for power device testing according to claim 4, characterized in that: The conductive layer (11) comprises a plurality of conductive contacts, and the conductive contacts are made of conductive gel.

6. The product placement detection system for power device testing according to claim 5, characterized in that: The position of the test hole (42) corresponds to the position of the conductive contact.

7. The product placement detection system for power device testing according to claim 1, characterized in that: The control unit (2) uses a chip of model LT3599.

Images