Automatic test platform and power module test system

Abstract

The utility model provides an automatic test platform and a power module test system, and relates to the technical field of automatic test. The automatic test platform comprises a platform frame, a tested object positioning module, a plug-in mechanism, a plug-in device and a detection module. The measured object positioning module is used for positioning a measured object to a first position; the plug-in mechanism is used for connecting the plug-in part of the tested object with the interface of the plug-in device; the detection module is used for detecting the working condition of the detected object when the plugging part of the detected object is connected with the interface of the plug-in device. According to the automatic test platform, the tested object can be connected to the interface of the plug-in device at an accurate position, so that power supply or load supply can be provided for the tested object, the normal working condition of the tested object is simulated, and meanwhile, the working conditions of a fan inside the tested object, an external LED and the like are detected.

Description

Technical Field

[0001] The present application relates to the field of automated testing technology, and in particular to an automated testing platform and a power module testing system. Background Art

[0002] Some existing product functional testing solutions can test individual LEDs, but are not suitable for testing LEDs installed on single boards and devices. Some can test LEDs on circuit boards, but they require placing the board in a dark box and identifying the LEDs through images. However, they cannot test modular products other than circuit boards. Some can test individual fans, but the testing accuracy for multiple fans in modular products is low, making it impossible to accurately identify a faulty fan.

[0003] Existing testing solutions can test individual LED lamps or fans, but cannot test LEDs or fans assembled within products, or testing is cumbersome. Furthermore, manual testing of modular products requires both movement and observation of light or noise, resulting in low manual efficiency.

[0004] How to automatically and efficiently test the working conditions of LEDs or fans installed in products is a technical problem to be solved by this application. Utility Model Content

[0005] The purpose of this application is to provide an automatic testing platform and a power module testing system to solve the technical problem of how to test LEDs or fans installed in products in the prior art.

[0006] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions.

[0007] In a first aspect, an embodiment of the present application provides an automatic testing platform, comprising a platform frame, a test object positioning module, a docking mechanism, an docking device, and a detection module;

[0008] The object positioning module, the plugging mechanism, the plugging device and the detection module are arranged on the platform frame;

[0009] The object positioning module is used to position the object to be measured at a first position;

[0010] The plug-in mechanism is used to connect the plug-in portion of the object to be measured with the interface of the plug-in device; and

[0011] The detection module is used to detect the working condition of the object under test when the plug-in portion of the object under test is connected to the interface of the docking device.

[0012] Optionally, the object positioning module includes a fixture and a blocking and correcting mechanism; the blocking and correcting mechanism is adjacent to the fixture;

[0013] The fixture is used to form a space larger than the object to be measured to accommodate the object to be measured;

[0014] The stop and correction mechanism is used to push and position the object to be measured to the first position when the object to be measured is placed on the fixture.

[0015] Optionally, the resistance correction mechanism includes a first cylinder group, the first cylinder group includes two side cylinders with opposite extension directions, and the first cylinder group is used to push the object to be measured to a position between the two side cylinders.

[0016] Optionally, the interfacing mechanism includes a second cylinder group, and the second cylinder group pushes the interfacing device to connect with the object to be measured.

[0017] Optionally, the object positioning module further includes a position sensor, and the position sensor is adjacent to the fixture;

[0018] When the object to be measured is placed on the fixture, the host computer or controller detects whether the object to be measured has warped edges by using the position sensor.

[0019] Optionally, the position sensors are arranged at the four corners of the target placement position of the object to be measured.

[0020] Optionally, the detection module includes at least one of the following: a wind speed sensing device, an LED light detection device, and a noise detection device.

[0021] Optionally, the automatic testing platform is further provided with a platform communication interface, and the platform communication interface is used for connecting the detection module with a host computer.

[0022] Optionally, the automatic test platform is further provided with a power interface, and the power interface is used for connecting an external adjustable power supply or load device to the object under test.

[0023] In the second aspect, an embodiment of the present application provides a power module testing system, which includes a robotic arm and an automatic testing platform of the first aspect. The object under test is a power conversion module or a power distribution module, and the robotic arm is used to place the object under test on the automatic testing platform.

[0024] Optionally, the power module testing system further includes a test piece conveying mechanism, a tested qualified piece conveying mechanism, and a tested unqualified piece conveying mechanism, and the robotic arm is used to place the tested object on the tested qualified piece conveying mechanism or the tested unqualified piece conveying mechanism.

[0025] Optionally, the power module testing system includes a plurality of the robotic arms, and each of the robotic arms corresponds to one of the automatic testing platforms.

[0026] Compared with the prior art, this application has the following beneficial effects:

[0027] The automatic testing platform provided by the embodiment of the present application enables the object under test to be connected to the interface of the plug-in device at an accurate position, thereby being able to power the object under test or provide a load, simulate the normal operation of the object under test, and detect the working conditions of the fan and LED inside the object under test. There is no need for manual movement, plugging and observation, etc., which saves manpower. In the power module test system, the robot arm can perform loading and unloading operations, and the conveying mechanism can transport the object under test without the need for manual movement, further saving manpower and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic diagram of an automatic testing platform provided in an embodiment of the present application;

[0030] Figure 2 A schematic diagram of an automatic testing platform with a fixture and a resistance correction mechanism provided in an embodiment of the present application;

[0031] Figure 3 A schematic diagram of an automatic test platform provided in an embodiment of the present application on which two objects to be tested of different sizes are placed;

[0032] Figure 4 A schematic diagram of an automatic test platform provided with a power interface and a communication interface provided in an embodiment of the present application.

[0033] Description of reference numerals:

[0034] 100 objects under test

[0035] 101 Object Positioning Module

[0036] 1011 Anti-correction mechanism

[0037] 102 code scanning device

[0038] 103 Wind speed sensing device

[0039] 104 LED light detection device

[0040] 105 Noise Detection Device

[0041] 106 plug-in mechanism

[0042] 1061 plug-in device

[0043] 107 Cable Bracket

[0044] 108 Position Sensor

[0045] 109 Fixtures

[0046] 110 Platform Framework

[0047] 111 Platform Communication Interface

[0048] 112 Power Interface DETAILED DESCRIPTION

[0049] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. The described embodiments are part of the embodiments of the present application, but not all of the embodiments. Generally, the components of the embodiments of the present application described in the drawings herein can be arranged and designed in various different configurations.

[0050] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is claimed, but rather merely represents selected embodiments of the present application. All other embodiments derived by persons of ordinary skill in the art based on the embodiments in this application without creative effort are intended to fall within the scope of protection of this application. The following embodiments and features therein may be combined with each other unless there is a conflict.

[0051] In the description of this application, it is necessary to explain:

[0052] Relational terms such as first and second, etc., are used solely to distinguish one entity or operation from another entity or operation and do not necessarily require or imply any actual relationship or order between these entities or operations;

[0053] “Connection” should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0054] See Figure 1The embodiment of the present application provides an automatic testing platform for testing an object under test 100, which is a power conversion module or a power distribution module, or a component that requires air cooling and excessive power current. The automatic testing platform includes a platform frame 110, an object under test positioning module 101, a docking mechanism 106, an docking device 1061, and a detection module. The detection module may include one or more of the following: a wind speed sensing device 103, an LED light detection device 104, and a noise detection device 105. In order to distinguish between multiple objects under test, a scannable barcode or QR code can be set on the object under test. Correspondingly, the automatic testing platform can also be provided with a code scanning device 102, such as a barcode scanner, a barcode scanning gun, etc.

[0055] like Figure 1 , the automatic test platform can connect the test host computer and the source load device.

[0056] The source-load device may be an external adjustable power supply or a load device, and the source-load device may provide power or a load for the object under test 100 .

[0057] The test host computer can be connected to the automatic test platform through CAN communication, RS485 communication and other communication methods to control the automatic test platform and collect data information of the detection module to determine whether the module test items are qualified.

[0058] The working process is as follows: the object under test 100 is placed at a certain position on the platform frame 110. The object under test positioning module 101 positions the object under test 100 to the first position. The docking mechanism 106 can then operate the object under test 100 in the first position to connect the plug portion (male or female connector) of the object under test 100 to the interface of the docking device 1061. This allows the object under test 100 to enter a working state such as charging or discharging, and the detection module detects the working status of the object under test 100.

[0059] Regarding the operation mode of the insertion mechanism 106 and the positional relationship between the object under test 100 and the insertion device 1061, there are several different design methods:

[0060] (1) The plugging mechanism 106 moves the object under test 100 from the first position to the second position. The first position to the second position is the movement direction of the plugging mechanism 106. The position of the plugging device 1061 remains unchanged. When the object under test 100 is in the second position, the plugging portion (plugging male connector or plugging female connector) of the object under test 100 is connected to the interface of the plugging device 1061.

[0061] (2) The interfacing mechanism 106 moves the interfacing device 1061 from the third position to the fourth position, where the third position is the initial position of the interfacing device 1061, and the third position to the fourth position is the movement direction of the interfacing mechanism 106. The object under test 100 is located at the first position and remains stationary. When the interfacing device 1061 is located at the fourth position and the object under test 100 is located at the first position, the plug-in portion of the object under test 100 is connected to the interface of the interfacing device 1061.

[0062] (3) The plugging mechanism 106 moves the object under test 100 from the first position to the fifth position, which is the first movement direction of the plugging mechanism 106. The plugging mechanism 106 moves the plugging device 1061 from the third position to the sixth position, which is the second movement direction of the plugging mechanism 106. When the object under test 100 is at the fifth position and the plugging device 1061 is at the sixth position, the plugging part (plug male connector or plug female connector) of the object under test 100 is connected to the interface of the plugging device 1061.

[0063] Regarding the functions of the aforementioned detection modules, the wind speed sensing device 103 can detect the fan speed of the test object 100, for example, a micro-impeller wind speed transmitter; the LED light detection device 104 can detect the color or brightness of the LED lights of the test object 100, for example, an LED tester; and the noise detection device 105 can detect whether the test object 100 has abnormal noises, such as fan noises, that exceed a threshold, for example, a directional noise monitoring sensor. This automatic test platform can test LEDs or fans installed in the test object, allowing for flexible configuration of the automatic test platform's functions. The software on the host computer can also generate test records or test reports based on the test items and test results.

[0064] The process of placing the object to be measured 100 on the platform frame 110 can be achieved by grabbing and placing it from an assembly line through a robotic arm.

[0065] Regarding the specific composition of the object positioning module 101, one implementation method is as follows: Figure 2 The object positioning module 101 may include a fixture 109 and a resistance and correction mechanism 1011, and the resistance and correction mechanism 1011 is adjacent to the fixture 109; the robot arm may first place the object 100 on the fixture 109, and the resistance and correction mechanism 1011 may then position the object 100 to the first position.

[0066] The resistance and correction mechanism 1011 may include a first cylinder group, and the resistance and correction mechanism 1011 includes cylinders on both sides. The cylinders on both sides may be symmetrical, and the extension directions of the cylinders on both sides are opposite. The first position is between the cylinders on both sides. The cylinders on both sides are used to push the object to be measured 100 located between the cylinders on both sides to the center position.

[0067] The object positioning module 101 may further be provided with a position sensor. Figure 2 The position sensor 108 may be adjacent to the fixture 109 . The position sensor 108 is used to detect whether the object 100 under test has warped edges. When the object 100 under test is placed on the fixture 109 , the controller in the host computer or the automatic test platform detects whether the object 100 under test has warped edges through the position sensor 108 .

[0068] The position sensors 108 may be disposed at the four corners to detect the placement status of each corner of the object 100 , so as to accurately determine whether the object 100 is warped or not.

[0069] If one side of the object under test 100 is tilted and the anti-correction mechanism 1011 is activated, it may further cause the position of the object under test 100 to deviate from the target position. Therefore, when one side of the object under test 100 is tilted, the controller in the host computer or automatic test platform needs to suspend the program of the anti-correction mechanism 1011 to avoid the anti-correction mechanism 1011 from being activated.

[0070] If the object 100 is placed without warping, the alignment mechanism 1011 can properly position the object 100. After positioning, the insertion mechanism 106 can further operate to connect the object 100 to the insertion device 1061.

[0071] The interfacing mechanism 106 may include a second cylinder group, which pushes the interfacing device 1061 to connect with the object under test 100 .

[0072] like Figure 3 The automatic test platform can be equipped with multiple sets of object positioning modules, insertion mechanisms, insertion devices and detection modules. Each set of object positioning modules, insertion mechanisms, insertion devices and detection modules detects an object of a certain size. Figure 3 In the embodiment, two sizes of objects under test 100 can be detected. A cable bracket 107 can be provided on the platform frame 110, and the cable bracket 107 is used to support and fix the cable.

[0073] like Figure 4 The automatic test platform may be provided with a power interface 112 , which is used to connect the source device to the object under test 100 .

[0074] The automatic test platform may be provided with a platform communication interface 111 , and the platform communication interface 111 is used to connect to a host computer.

[0075] Based on the above embodiments, the embodiments of the present application also provide a power module testing system, in which the object to be tested is a power conversion module or a power distribution module. The power module testing system includes the above-mentioned automatic testing platform, and the power module testing system may also include a test host computer and a source carrier device.

[0076] The host computer can test the lights, fans and other modules inside the power conversion module or power distribution module. The host computer can also perform one or more of the following test items on the power conversion module or power distribution module: 1. Input voltage accuracy verification; 2. Output voltage accuracy verification; 3. Output current accuracy verification; 4. Current limit sampling accuracy verification; 5. Power limit sampling accuracy verification; 6. Voltage regulation rate verification; 7. Input overvoltage protection; 8. Input undervoltage protection; 9. Output short circuit protection.

[0077] The power module testing system may also include a robotic arm and a transport mechanism for the DUT 100. The robotic arm removes the DUT 100 from the transport mechanism and places it in a position where the DUT positioning module 101 can locate it. After testing is complete, the robotic arm removes the DUT 100 from the automated testing platform and places it back on the transport mechanism. This allows for unmanned operation of the entire workshop and improves production efficiency.

[0078] The conveying mechanism may include a conveying mechanism for the piece to be tested and a conveying mechanism for the piece to be tested. The conveying mechanism for the piece to be tested and the conveying mechanism for the piece to be tested can be distributed on two opposite sides of the robotic arm, such as the left and right sides of the robotic arm. The front of the robotic arm is an automatic testing platform, and the robotic arm can grab and place the object to be tested from left to right, saving paths to the maximum extent.

[0079] The tested piece conveying mechanism may include a tested qualified piece conveying mechanism and a tested unqualified piece conveying mechanism to distinguish and process qualified pieces from unqualified pieces. The above-mentioned conveying mechanism may be a conveyor belt.

[0080] The power module testing system includes a plurality of the robotic arms, each of which corresponds to one automatic testing platform, thereby significantly improving the productivity of the workshop.

[0081] The air-cooled power module can be used as the DUT 100, as shown below. Figure 2 , taking the air-cooled power module as an example, an implementation method of the automatic test platform is introduced.

[0082] After the automatic test platform is powered on, it will first pass the program self-test. After the self-test is completed, all mechanisms will return to their initial state.

[0083] The automatic testing platform can send material picking information to the robot, and the robot places the air-cooled power module into the position set by the fixture 109. After the four position sensors 108 set on the fixture 109 sense that the air-cooled power module is placed in the correct position, the cylinders of the resistance mechanism 1011 on the left and right sides are activated to resist the air-cooled power module so that the identification line of the air-cooled power module coincides with the identification line of the fixture.

[0084] The input / output terminal blocks at the rear of the air-cooled power module are aligned longitudinally with the terminals of the insertion device 1061 on the cylinder of the insertion mechanism 106 at the rear of the air-cooled power module. The insertion mechanism 106 cylinder moves forward, driving the insertion device 1061 to mate with the input / output terminal blocks of the air-cooled power module, thus completing the positioning of the air-cooled power module. The air-cooled power module can then be powered by controlling the contactor to close.

[0085] The test host computer issues commands to control the startup and operation of the air-cooled power module and adjust its operating status. The barcode scanning device 102 on the front of the air-cooled power module scans the barcode of the air-cooled power module, confirming the specifications of the air-cooled power module through the barcode. Based on the specifications of the air-cooled power module, the corresponding test program is retrieved. This barcode serves as the sole basis for internal traceability in the test report. The test program includes functional test programs such as programs for controlling the power conversion module's operation in different modes and programs for controlling the opening and closing of the power conversion module's switch unit.

[0086] By testing the upper computer to issue instructions to control the wind speed sensing device 103 at the front of the air-cooled power module, the speed and air volume of the air-cooled power module fan are detected, the fan status of the air-cooled power module is judged, and whether the fan is operating normally is judged.

[0087] The upper computer issues instructions to control the LED light detection device 104 at the front of the air-cooled power module to detect the light color, brightness, etc. of various working states of the air-cooled power module.

[0088] The noise detection device 105 at the front of the air-cooled power module is controlled by the test host computer through instructions to determine whether the noise of the air-cooled power module during operation exceeds the specified range, detect the fan noise of the air-cooled power module, and abnormal noise inside the air-cooled power module, so as to determine whether the air-cooled power module is working normally.

[0089] The host computer issues commands to control the adjustable power supply and adjustable load connected to the input side of the air-cooled power module, performing functional load testing, calibration, fault simulation, and other operating condition tests on the air-cooled power module. The host computer can also perform one or more of the following tests on the power conversion module or power distribution module: 1. Input voltage accuracy verification; 2. Output voltage accuracy verification; 3. Output current accuracy verification; 4. Current limit sampling accuracy verification; 5. Power limit sampling accuracy verification; 6. Voltage regulation verification; 7. Input overvoltage protection; 8. Input undervoltage protection; 9. Output short-circuit protection.

[0090] After the test is completed, the host computer can automatically generate a test report including the above indicators based on the test items.

[0091] The above-described device and system embodiments are merely illustrative, and some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment. Those skilled in the art may understand and implement the present invention without inventive effort.

[0092] The above are merely preferred embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. An automatic testing platform, characterized in that: It includes a platform frame, a positioning module for the object to be measured, a plug-in mechanism, a plug-in device and a detection module; The object positioning module, the plugging mechanism, the plugging device and the detection module are arranged on the platform frame; The object positioning module is used to position the object to be measured at a first position; The plug-in mechanism is used to connect the plug-in portion of the object to be measured with the interface of the plug-in device; as well as The detection module is used to detect the working condition of the object under test when the plug-in portion of the object under test is connected to the interface of the docking device.

2. The automatic testing platform according to claim 1, wherein: The object positioning module includes a fixture and a blocking and correcting mechanism; the blocking and correcting mechanism is adjacent to the fixture; The fixture is used to form a space larger than the object to be measured to accommodate the object to be measured; The stop and correction mechanism is used to push and position the object to be measured to the first position when the object to be measured is placed on the fixture.

3. The automatic testing platform according to claim 2, characterized in that: The resistance and correction mechanism includes a first cylinder group, which includes two cylinders on opposite sides extending in opposite directions. The first cylinder group is used to push the object to be measured to a first position between the two cylinders on the two sides.

4. The automatic testing platform according to claim 1, wherein: The interlocking mechanism includes a second cylinder group, and the second cylinder group pushes the interlocking device to connect with the object to be measured.

5. The automatic testing platform according to claim 2, wherein: The object positioning module further includes a position sensor, and the position sensor is adjacent to the fixture; When the object to be measured is placed on the fixture, the host computer or controller detects whether the object to be measured has warped edges by using the position sensor.

6. The automatic testing platform according to claim 5, characterized in that: The position sensors are arranged at the four corners of the target placement position of the object to be measured.

7. The automatic testing platform according to claim 1, wherein: The detection module includes at least one of the following: a wind speed sensing device, an LED light detection device, and a noise detection device.

8. The automatic testing platform according to claim 1, wherein: The automatic test platform is further provided with a platform communication interface, and the platform communication interface is used for connecting the detection module with a host computer.

9. The automatic testing platform according to claim 1, wherein: The automatic test platform is further provided with a power interface, which is used for connecting an external adjustable power supply or load device to the object under test.

10. A power module testing system, characterized in that: The power module testing system includes a robotic arm and the automatic testing platform according to any one of claims 1 to 9, the object under test is a power conversion module or a power distribution module, and the robotic arm is used to place the object under test on the automatic testing platform.

11. The power module testing system according to claim 10, wherein: The power module testing system further includes a test piece conveying mechanism, a tested qualified piece conveying mechanism, and a tested unqualified piece conveying mechanism. The robotic arm is used to place the tested object on the tested qualified piece conveying mechanism or the tested unqualified piece conveying mechanism.

12. The power module testing system according to claim 11, wherein: The power module testing system includes a plurality of robotic arms, and each robotic arm corresponds to one automatic testing platform.

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