Module aging detection tool

Abstract

The utility model provides a module aging detection tool, which belongs to the field of module reliability test and comprises a shell, a rectifying plate, a control plate, a signal detection plate and a display control module, a display screen, an alternating current input switch S1 and a universal change-over switch S2 are arranged on the front side of the shell, and an alternating current input port, a current output port and a voltage output port are arranged on the back side of the shell. Alternating current is input to the rectifying plate through S1, then direct current is output, the direct current is supplied to the control panel, the signal detection plate and the display control module, a current sensor is arranged on a circuit between the alternating current input port and the current output port, and the control panel is further connected to the circuit between the alternating current input port and the current output port. The alternating current input port is connected to the voltage output port through S2; current, voltage and relay on-off stress are applied to the multiple tested modules at the same time, the control panel collects the voltage, the current sensor collects the current and compares with data fed back by the signal detection board, performance parameters of the multiple modules are verified at the same time, and the aging test efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of module reliability test, in particular to a module aging detection tool. Background Art

[0002] In order to ensure the reliability of power distribution products, it is usually necessary to apply specified environmental stresses to printed circuit board assemblies to discover and eliminate defective electronic components caused by component and process defects during the manufacturing process. Aging tests are used to verify whether the product has failed.

[0003] At present, the large batches of single-phase / three-phase output execution modules produced by Hefei Tongzhi Company need to undergo temperature cycling, vibration testing, and aging testing. In the prior art, the single-phase / three-phase output execution modules are usually installed in the power distribution product as a whole machine, and the power distribution product as a whole machine is powered on and operated, so as to screen and test the single-phase / three-phase output execution modules. Since the various parts of the power distribution product work in time-sharing and the working time of each part is different, when the power distribution product is running, not all performance parameters of the single-phase / three-phase output module can be verified. Load changes will also cause insufficient aging load verification time. Therefore, the single-phase / three-phase output module is installed in the whole machine for environmental stress screening and aging testing, which has the problems of low efficiency and insufficient verification. How to efficiently complete batch testing and inspection of single-phase / three-phase output modules has become an urgent problem to be solved. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to improve the working efficiency of output module aging detection.

[0005] The utility model solves the above technical problems through the following technical solutions: a module aging detection tool, including a shell, a rectifier board, a control board, a signal detection board, and a display control module. The front of the shell is provided with a display screen, an AC input switch S1 and a universal conversion switch S2, and the back of the shell is provided with an AC input port, a current output port and a voltage output port. AC power is input to the rectifier board through the AC input switch S1, and then DC power is output, which supplies power to the control board, the signal detection board and the display control module respectively. A current sensor is provided on the line between the AC input port and the current output port, and the current sensor is connected to the control board. The control board is also connected to the line between the AC input port and the current output port. The AC input port is connected to the voltage output port through the universal conversion switch S2, and the display control module and the signal detection board are both connected to the control board.

[0006] The detection tooling of the utility model applies current, voltage and relay on-off stress to multiple modules under test at the same time. The control board collects three-phase AC voltage in real time and collects three-phase AC current through the current sensor. The control board compares the collected voltage and current signals with the actual data fed back by the signal detection board, judges whether the result is qualified according to the reserved set threshold value, and displays the detection result on the display screen. The detection tooling detects whether the communication function of the module under test is normal by receiving and analyzing the data returned by the module under test, and checks the phase-shifting function of the three-phase output execution module by changing the state of the universal conversion switch S2. All performance parameters of multiple modules under test can be verified at the same time, the aging load verification time is sufficient, and the aging is sufficient, which greatly improves the work efficiency of the aging test.

[0007] Preferably, the signal detection board and the display control module are connected to the control board via a CAN bus, the model of the control board is LPC2194, the model of the signal detection board is P89LPC936FDH, the model of the display control module is LPC2119FBD64, the port X12-1 of the signal detection board and the port X5-1 of the display control module are both connected to the port X7-1 of the control board, and the port X12-2 of the signal detection board and the port X5-2 of the display control module are both connected to the port X7-2 of the control board.

[0008] Preferably, the model of the rectifier board is DHS100B28, port X1-1 of the rectifier board is connected to the neutral line of the three-phase AC power, port X1-2 is connected to one phase of the three-phase AC power, port X2-1 is respectively connected to port X1-1 of the control board, port X11-1 of the signal detection board and port X1-1 of the display control module, and port X2-2 of the rectifier board is respectively connected to port X1-2 of the control board, port X11-2 of the signal detection board and port X1-2 of the display control module.

[0009] Preferably, the display screen is connected to port X4 of the display control module, and the display control module is also connected to a buzzer and an indicator light board, the buzzer is connected to port X3 of the display control module, and the indicator light board is connected to port X2 of the display control module.

[0010] Preferably, the current sensor is connected to ports X4, X5, and X6 of the control board, and the voltage sampling ports X2-4, X2-3, X2-2, and X2-1 of the control board are respectively connected to phase A, phase B, phase C, and neutral line N of the three-phase alternating current.

[0011] Preferably, the model of the universal conversion switch S2 is LW26-20 4D, and it has six contacts, contact one is connected to the B phase of the voltage output port, contact two is connected to the C phase of the voltage output port, contact three and contact six are both connected to the C phase of the three-phase alternating current, and contact four and contact five are both connected to the B phase of the three-phase alternating current.

[0012] Preferably, it also includes a base plate, multiple modules under test are installed on the base plate, the three-phase voltage detection interfaces of the multiple modules under test are all connected to the voltage output port, the current sensors of the multiple modules under test are sequentially arranged on the three-phase lines of the current output port, and the current sensor of the last module under test is connected to the AC three-phase load cabinet.

[0013] Preferably, it also includes a base plate, multiple modules under test are installed on the base plate, the single-phase voltage detection interfaces of the multiple modules under test are connected to one of the A, B, and C phases of the voltage output port, the current sensors of the multiple modules under test are sequentially arranged on one of the phases of the three-phase line of the current output port, and the current sensor of the last module under test is connected to the load cabinet.

[0014] The advantages provided by the utility model are:

[0015] 1. The detection tooling of the utility model applies current, voltage and relay on-off stress to multiple modules under test at the same time. The control board collects three-phase AC voltage in real time and collects three-phase AC current through the current sensor. The control board compares the collected voltage and current signals with the actual data fed back by the signal detection board, judges whether the result is qualified according to the reserved set threshold, and displays the detection result on the display screen. The detection tooling detects whether the communication function of the module under test is normal by receiving and analyzing the data returned by the module under test, and checks the phase-shifting function of the three-phase output execution module by changing the state of the universal conversion switch S2. All performance parameters of multiple modules under test can be verified at the same time, and the aging load verification time is sufficient, and the aging is sufficient, which greatly improves the work efficiency of the aging test.

[0016] 2. The detection tooling of the utility model simultaneously performs voltage detection, current detection, phase loss detection and CAN communication function detection on multiple single-phase or three-phase output execution modules, and can efficiently complete batch single-phase or three-phase module test detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A front view of a module aging detection tool provided in an embodiment of the utility model;

[0018] Figure 2 A rear view of a module aging detection tool provided in an embodiment of the utility model;

[0019] Figure 3 A test wiring diagram of a module aging detection tool provided in an embodiment of the utility model;

[0020] Figure 4 The installation front view of the module aging detection tooling provided in the embodiment of the utility model;

[0021] Figure 5 A top view of the installation of a module aging detection tool provided in an embodiment of the utility model;

[0022] Figure 6 A schematic diagram of a module under test of a module aging detection tool provided in an embodiment of the utility model;

[0023] In the figure: 10 housing, 11 display screen, 12 AC input port, 13 current output port, 14 voltage output port, 20 rectifier board, 30 control board, 40 signal detection board, 50 display control module, 60 current sensor, 70 bottom plate. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the technical solution of the utility model is clearly and completely described below in combination with specific embodiments and with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, but not all of them. Based on the embodiments of 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] like Figure 1-3 As shown, the present embodiment provides a module aging detection tool, including a shell 10, a rectifier board 20, a control board 30, a signal detection board 40, and a display control module 50. The front of the shell 10 has a display screen 11, an AC input switch S1, and a universal conversion switch S2, and the back of the shell has an AC input port 12, a current output port 13, and a voltage output port 14. AC power is input to the rectifier board 20 through the AC input switch S1, and then DC power is output, which supplies power to the control board 30, the signal detection board 40, and the display control module 50 respectively. A current sensor 60 is arranged on the line between the AC input port 12 and the current output port 13, and the current sensor 60 is connected to the control board 30 for collecting the input three-phase current. The control board 30 is also connected to the line between the AC input port 12 and the current output port 13 for collecting the input three-phase voltage. The AC input port 12 is connected to the voltage output port 14 through the universal conversion switch S2, and the display control module 50 and the signal detection board 40 are both connected to the control board 30.

[0026] The detection tooling of the utility model applies current, voltage and relay on-off stress to multiple modules under test at the same time. The control board collects three-phase AC voltage in real time and collects three-phase AC current through the current sensor. The control board compares the collected voltage and current signals with the actual data fed back by the signal detection board, judges whether the result is qualified according to the reserved set threshold value, and displays the detection result on the display screen. The detection tooling detects whether the communication function of the module under test is normal by receiving and analyzing the data returned by the module under test, and checks the phase-shifting function of the three-phase output execution module by changing the state of the universal conversion switch S2. All performance parameters of multiple modules under test can be verified at the same time, the aging load verification time is sufficient, and the aging is sufficient, which greatly improves the work efficiency of the aging test.

[0027] The signal detection board 40 and the display control module 50 are both connected to the control board 30 through the CAN bus. The model of the control board 30 is LPC2194, the model of the signal detection board 40 is P89LPC936FDH, the model of the display control module 50 is LPC2119FBD64, the port X12-1 of the signal detection board 40 is connected to the port X7-1 of the control board 30, the port X12-2 of the signal detection board 40 is connected to the port X7-2 of the control board 30, the port X5-1 of the display control module 50 is connected to the port X7-1 of the control board 30, and the port X5-2 of the display control module 50 is connected to the port X7-2 of the control board 30.

[0028] The model of the rectifier board 20 is DHS100B28, the port X1-1 of the rectifier board 20 is connected to the neutral line of the three-phase AC power, the port X1-2 is connected to one of the phases of the three-phase AC power, in this embodiment, the port X1-2 is connected to the A phase of the three-phase AC power, the port X2-1 and the port X2-2 of the rectifier board 20 output DC power, in this embodiment, the input three-phase AC power is rectified by the rectifier board to output a DC voltage of 24V, the port X2-1 of the rectifier board 20 is respectively connected to the port X1-1 of the control board 30, the port X11-1 of the signal detection board 40 and the port X1-1 of the display control module 50, the port X2-2 of the rectifier board 20 is respectively connected to the port X1-2 of the control board 30, the port X11-2 of the signal detection board 40 and the port X1-2 of the display control module 50.

[0029] The display screen 11 is connected to the port X4 of the display control module 50. The display control module 50 is also connected to a buzzer and an indicator light board. The buzzer is connected to the port X3 of the display control module 50, and the indicator light board is connected to the port X2 of the display control module 50. The tester inputs the command to the display control module 50 through the touch key in the LCD screen, and then inputs it to the control board 30 through the CAN bus. The control board 30 communicates with the ports X1-3 and X1-4 of multiple three-phase output execution modules through the CAN bus, controls the relay K1 in the three-phase output execution module to be attracted, and the port CB of the three-phase output execution module is connected to the port COM. At this time, the DC15V signal in the signal detection board can enter the signal detection board through the port JX5-4 and the port CB of the relay K1 to the port JX5-14 of the signal detection board. The signal detection board sends the actual status data of the interface of the tested module to the control board through the CAN bus and lights up the indicator light board.

[0030] The current sensor 60 is connected to ports X4, X5, and X6 of the control board 30, and the voltage sampling ports X2-4, X2-3, X2-2, and X2-1 of the control board 30 are respectively connected to phase A, phase B, phase C, and neutral line N of the three-phase AC power, for real-time collection of the voltage on the three-phase AC line.

[0031] The model of the universal conversion switch S2 is LW26-20 4D. It has six contacts. Contact one is connected to the B phase of the voltage output port, contact two is connected to the C phase of the voltage output port, contact three and contact six are both connected to the C phase of the three-phase AC power, and contact four and contact five are both connected to the B phase of the three-phase AC power. When contact three is connected to contact one and contact four is connected to contact two at the same time, the phase sequence is detected to be wrong. When contact five is connected to contact one and contact six is ​​connected to contact two at the same time, the phase sequence is detected to be correct.

[0032] Working principle: The detection tool of the utility model can simultaneously perform voltage detection, current detection, phase loss detection, and CAN communication detection on multiple single-phase / three-phase output execution modules. The functions of the single-phase / three-phase output execution modules are as follows:

[0033] Table 1 Three-phase output execution module detection content correspondence table

[0034]

[0035] The following is an example of detecting 10 three-phase output execution modules C1-C10. Figure 4-5When the detection tooling is used to detect 10 three-phase output execution modules C1-C10, the three-phase output execution modules C1-C10 are installed on the base plate 70, and the voltage detection interfaces of the three-phase output execution modules C1-C10 are all connected to the voltage output port 14 of the detection tooling. Specifically, the interfaces X2-4, X2-3, X2-2, and X2-1 of the three-phase output execution modules C1-C10 are respectively connected to the A phase, B phase, C phase, and neutral line of the voltage output port 14, and the current sensors of the three-phase output execution modules C1-C10 are sequentially arranged on the three-phase lines of the current output port 13, and the current sensors are connected to the ports X4, X5, and X6 of the three-phase output execution modules C1-C10. The output execution modules C1-C10 all transmit signals with the control board 30 through the CAN bus. The ports X1-3 and X1-4 of the three-phase output execution modules C1-C10 are connected to the ports X7-1 and X7-2 of the control board 30. The port X3-5 of the three-phase output execution modules C1-C10 is respectively connected to the ports JX5-4 to JX5-13 of the signal detection board. The ports X3-4 of the three-phase output execution modules C1-C10 are respectively connected to the ports JX5-14 to JX5-23 of the signal detection board. The current sensor of the three-phase output execution module C10 is finally connected to the AC three-phase load cabinet, which can adjust the load current according to the rated current of the three-phase output execution module.

[0036] The three-phase output execution module C1-C10 sends the voltage and current data detected by the module under test to the control board 30 through the CAN bus. The control board 30 collects the three-phase AC voltage in real time, and collects the three-phase AC current through the current sensor 60 connected to the control board 30. The internal single-chip microcomputer of the control board 30 compares the voltage and current signals collected by the control board with the actual data fed back by the signal detection board 40, and judges whether the result is qualified according to the reserved alarm and fault threshold, and displays the detection result on the display screen 11, the alarm result is displayed in yellow font, and the fault result is displayed in red font. Since the detection tool uses the CAN bus to send instructions to the three-phase output execution module C1-C10, the three-phase output execution module C1-C10 of the object under test sends the specified data to the detection tool through the CAN bus. The detection tool can detect whether the CAN communication function of the module under test is normal by receiving and analyzing the data returned by the module under test. By changing the state of the universal conversion switch S2, the phase-shifting function of the three-phase output execution module C1-C10 can be checked, so that the detection tool can detect the functions of the module under test in real time with one key.

[0037] The detection tooling of the utility model can also be used for the detection of single-phase output execution modules. When used for the detection of single-phase output execution modules, the voltage detection interface of the single-phase output execution module is connected to one of the A, B, and C phases of the voltage output port 14 of the detection tooling, and the current sensor of the single-phase output execution module is set at one of the current output ports A, B, and C. Finally, the current sensor of the module under test is connected to the AC three-phase load cabinet.

[0038] When the detection tooling of the utility model is used, the test can be carried out at room temperature or in a high and low temperature test chamber. When the test is carried out in the high and low temperature test chamber, multiple three-phase output execution modules or single-phase output execution modules are placed in the high and low temperature test chamber. The model of the high and low temperature test chamber can be a high and low temperature wet heat rapid temperature change test chamber SDE710SH-F or a rapid temperature change test chamber ESS-1000S-C3.

[0039] The detection tooling of the utility model applies current, voltage, and relay on-off stress to multiple single-phase / three-phase output execution modules at the same time, so that all performance parameters of the single-phase / three-phase output modules can be verified at the same time. The aging load verification time is sufficient and the aging is sufficient, which greatly improves the work efficiency of the aging test.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A module aging detection tool, characterized by: The invention comprises a housing (10), a rectifier plate (20), a control panel (30), a signal detection panel (40), and a display control module (50); the housing (10) has a display screen (11), an AC input switch S1, and a universal conversion switch S2 on the front side; the housing has an AC input port (12), a current output port (13), and a voltage output port (14) on the back side; AC power is input to the rectifier plate (20) through the AC input switch S1, and then DC power is output to the control panel (30), the signal detection panel (40), and the display control module (50). The display control module (50) is powered, a current sensor (60) is provided on the line between the AC input port (12) and the current output port (13), the current sensor (60) is connected to the control board (30), the control board (30) is also connected to the line between the AC input port (12) and the current output port (13), the AC input port (12) is connected to the voltage output port (14) via a universal conversion switch S2, and the display control module (50) and the signal detection board (40) are both connected to the control board (30).

2. The module aging detection tool according to claim 1, characterized in that: The signal detection board (40) and the display control module (50) are both connected to the control board (30) via a CAN bus; the model of the control board (30) is LPC2194, the model of the signal detection board (40) is P89LPC936FDH, the model of the display control module (50) is LPC2119FBD64, the port X12-1 of the signal detection board (40) and the port X5-1 of the display control module (50) are both connected to the port X7-1 of the control board (30), and the port X12-2 of the signal detection board (40) and the port X5-2 of the display control module (50) are both connected to the port X7-2 of the control board (30).

3. The module aging detection tool according to claim 2, characterized in that: The model of the rectifier board (20) is DHS100B28, the port X1-1 of the rectifier board (20) is connected to the neutral line of the three-phase alternating current, the port X1-2 is connected to one phase of the three-phase alternating current, the port X2-1 is respectively connected to the port X1-1 of the control board (30), the port X11-1 of the signal detection board (40) and the port X1-1 of the display control module (50), and the port X2-2 of the rectifier board (20) is respectively connected to the port X1-2 of the control board (30), the port X11-2 of the signal detection board (40) and the port X1-2 of the display control module (50).

4. The module aging detection tool according to claim 3 is characterized in that: The display screen (11) is connected to the port X4 of the display control module (50), and the display control module (50) is also connected to a buzzer and an indicator light board, the buzzer is connected to the port X3 of the display control module (50), and the indicator light board is connected to the port X2 of the display control module (50).

5. The module aging detection tool according to claim 2, characterized in that: The current sensor (60) is connected to ports X4, X5, and X6 of the control board (30), and the voltage sampling ports X2-4, X2-3, X2-2, and X2-1 of the control board (30) are respectively connected to phase A, phase B, phase C, and a neutral line N of the three-phase alternating current.

6. The module aging detection tool according to claim 1, characterized in that: The model of the universal conversion switch S2 is LW26-20 4D, and it has six contacts. Contact one is connected to the B phase of the voltage output port, contact two is connected to the C phase of the voltage output port, contact three and contact six are both connected to the C phase of the three-phase alternating current, and contact four and contact five are both connected to the B phase of the three-phase alternating current.

7. The module aging detection tool according to claim 1, characterized in that: It also includes a base plate, multiple modules under test are mounted on the base plate, the three-phase voltage detection interfaces of the multiple modules under test are all connected to the voltage output port (14), the current sensors of the multiple modules under test are sequentially arranged on the three-phase lines of the current output port (13), and the current sensor of the last module under test is connected to the AC three-phase load cabinet.

8. The module aging detection tool according to claim 1, characterized in that: It also includes a base plate, multiple modules under test are mounted on the base plate, the single-phase voltage detection interfaces of the multiple modules under test are all connected to one of the A, B, and C phases of the voltage output port (14), the current sensors of the multiple modules under test are sequentially arranged on one of the phases of the three-phase line of the current output port (13), and the current sensor of the last module under test is connected to the AC three-phase load cabinet.

9. The module aging detection tool according to claim 7 or 8, characterized in that: It also includes a high and low temperature test box, in which a plurality of modules to be tested are placed.

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