Split type live aging test device

Abstract

The utility model relates to a split type live aging test device, which comprises a test box and a test frame, and is characterized in that the test box comprises a test cavity and an air duct assembly which is communicated with the test cavity and forms circulating air; the air duct assembly comprises a circulating air duct arranged on the periphery of the test cavity, an air outlet formed in the first inner wall of the test cavity and connected with one end of the circulating air duct, and an air return port formed in the second inner wall, opposite to the first inner wall, of the test cavity; the test frame comprises a frame body, a plurality of hollow laminates arranged on the frame body up and down, and test stations arranged on the hollow laminates and used for loading tested products, one end of each hollow laminate is provided with an air inlet, the other end of each hollow laminate is closed, and the bottom surface of each hollow laminate is provided with a first air blowing port at a position corresponding to the test station below the hollow laminate. According to the utility model, the test frame and the test box are arranged to be of a split structure, so that a worker can disassemble and assemble a product conveniently, time and labor are saved, and the test efficiency is prevented from being influenced by the disassembly and assembly process. And the split type testing frame can meet the production requirements of an automatic workshop.

Description

Technical Field

[0001] This utility model relates to a split-type charged aging test device, which is applicable to the field of electronic device reliability testing technology. Background Technology

[0002] The split-type live-line aging test device is a device used to conduct reliability tests on electronic devices such as chips and optical modules. This device mainly tests the power-on operation status and performance indicators of electronic devices in complex environments. This process requires the electronic devices to be powered on in extreme environments such as high temperature, high temperature and high humidity or low temperature, and to monitor the changes during the power-on operation in order to screen out defective products.

[0003] The structure and working principle of existing testing equipment are mostly as disclosed in the patent with publication number CN113406423B. This involves setting a support within the testing chamber to divide it into multiple testing areas for placing the product under test, and circulating air ducts surrounding these areas. Branch air ducts are then created between adjacent testing areas, allowing airflow to be directed to each product and then returning to the circulating air ducts from one side of the testing area. However, such equipment requires manual installation and removal of the product under test by testing personnel during or after testing. Since the testing chamber typically only has one opening, these operations are extremely time-consuming and labor-intensive. Furthermore, because the testing stations are fixed within the testing chamber, disassembly or installation can prevent the equipment from performing subsequent tests, impacting its efficiency. In addition, with the continuous development of intelligent workshop technologies, industrial plants are gradually moving towards automation and unmanned operation, and the structure of existing testing equipment can no longer meet the demands of automation. Utility Model Content

[0004] To address the shortcomings of the existing technology, this invention proposes a split-type charged aging test device.

[0005] The technical solution adopted in this utility model is a split-type charged aging test device, comprising:

[0006] The test chamber includes a test chamber and a duct assembly that communicates with the test chamber and forms a circulating airflow. The duct assembly includes a circulating airflow duct disposed around the periphery of the test chamber, an air outlet opened on the first inner wall of the test chamber and connected to one end of the circulating airflow duct, and a return air outlet opened on the second inner wall of the test chamber opposite to the first inner wall and connected to the other end of the circulating airflow duct.

[0007] The test rack includes a frame, several hollow shelves arranged vertically on the frame, and test stations set on the hollow shelves for loading the products to be tested. Each hollow shelf has an air inlet at one end and is closed at the other end. Each hollow shelf has a first air outlet at a position corresponding to the test station below it.

[0008] The testing device has at least two operating states. In the first operating state, the test rack is detached from the test chamber. In the second operating state, the test rack is located inside the test chamber, with the air inlet and outlet connected. By designing the test rack and test chamber as separate units, the testing device is placed in the first operating state (test rack detached from the test chamber) before or after testing. This facilitates the installation and removal of the product under test by testing personnel, saving time and effort. It also allows other loaded test racks to be installed into the test chamber during installation or removal, avoiding any impact on testing efficiency and thus improving overall efficiency. Furthermore, the separate test rack design facilitates the use of forklifts and other transport vehicles. After testing, the test rack can be automatically removed by an automated forklift, and test racks loaded with untested products can be automatically installed, meeting the production needs of automated workshops.

[0009] Furthermore, the air duct assembly also includes an air guide frame that surrounds the air outlet and is fixed to the first inner wall. When the testing device is in the second working state, one side of the frame abuts against the air guide frame, and all air inlets are located inside the air guide frame. The air guide frame constrains and guides the airflow from the air outlet, preventing airflow from escaping and ensuring the amount of gas blown into the testing frame.

[0010] Furthermore, a wall panel is provided on one side of the frame, and one end of the hollow shelf is connected to the wall panel. The wall panel has ventilation openings that correspond one-to-one with the air inlet. When the testing device is in the second working state, the wall panel covers and abuts against the air guide frame. By blocking the airflow from the outlet, the airflow is ensured to enter the hollow shelf only through the ventilation openings and air inlet after exiting the outlet, thus ensuring the amount and velocity of gas reaching the tested product from the first air outlet. Optionally, the air guide frame can also be fixed to the wall panel, with all ventilation openings located inside the air guide frame. When the testing device is in the second working state, the first inner wall covers and abuts against the air guide frame, and the air outlet is located inside the air guide frame.

[0011] Furthermore, the air duct assembly also includes a sealing strip along the edge of the air guide frame. When the testing device is in the second operating state, the sealing strip is clamped between the wall panel and the air guide frame. The sealing strip improves the sealing between the air guide frame and the wall panel, preventing the gas blown out of the air outlet from escaping from the gap between the air guide frame and the wall panel, thus further ensuring the amount and velocity of gas flowing through the product under test.

[0012] Furthermore, a second air vent is provided on the top surface of each hollow layer plate corresponding to the test station above it. The amount of gas blown to the product under test is further increased through the second air vent, thereby improving the heat dissipation effect on the product under test and making it easier to adapt to the testing of products with high heat generation.

[0013] Furthermore, the first air outlet is designed as an inverted cone shape, wider at the top and narrower at the bottom, while the second air outlet is designed as a cone shape, narrower at the top and wider at the bottom. By designing both the first and second air outlets as cones, the space is gradually compressed as the airflow exits the outlet, thereby further increasing the airflow velocity.

[0014] Furthermore, the testing device also includes at least one pair of pulley assemblies disposed at the bottom of the testing chamber, with the at least one pair of pulley assemblies located on the left and right sides of the bottom of the testing chamber, respectively. Each pulley assembly includes a pair of wheel frames fixed to the bottom surface of the testing chamber, and multiple rollers rotatably connected between the pair of wheel frames about a pivot axis arranged in the left-right direction, with the multiple rollers arranged in the front-back direction. The pulley assemblies improve the ease of moving the test frame into or out of the testing chamber and prevent friction between the test frame and the inner wall of the testing chamber, thus avoiding damage to the device.

[0015] Furthermore, the testing device also includes at least one locking assembly disposed at the bottom of the testing chamber for locking the position of the test frame. The locking assembly includes a fixing member fixed to the bottom surface of the testing chamber, at least one hook rotatably connected to the side of the fixing member, and an elastic member connected between the fixing member and the hook for applying force to the hook so that its head tends to swing backward. When the testing device is in the second working state, the head of the hook abuts against the front of the test frame and applies a backward force to the test frame. Specifically, the elastic member is set as a torsion spring. The locking assembly can lock the position of the test frame after it is installed in the testing chamber, preventing displacement of the test frame during testing and ensuring the stability of the testing process.

[0016] Furthermore, the testing device also includes a positioning sensor installed on the rear wall of the testing chamber. When the testing device is in the second working state, the positioning sensor is triggered to monitor whether the test frame is installed in place. This not only facilitates pre-test checks by testing personnel, but also provides positioning signals for other automated testing processes, thus providing a basis for the implementation of automated testing.

[0017] Furthermore, each testing station is equipped with a test circuit board for loading and testing the product under test (DUT). A heat sink is connected to the back of the test circuit board corresponding to the position of the DUT. Specifically, the test rack is also equipped with a first interface for electrical connection to each test circuit board, and a second interface corresponding to the first interface is also provided inside the test chamber. When the test rack is inserted into the test chamber, the first interface and the second interface are plugged in to supply power to the test circuit board, thereby testing the DUT. In addition, the heat sink is designed with a finned structure and is made of copper plate to improve heat transfer efficiency and further enhance heat dissipation performance.

[0018] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0019] The split-type electrical aging testing device of this invention separates the test rack and the test chamber into two parts. This allows the test rack to be removed from the test chamber before or after testing, facilitating the installation and removal of the product under test by testing personnel, saving time and effort. It also allows other loaded test racks to be installed into the test chamber during installation or removal, avoiding any impact on testing efficiency and thus improving overall testing efficiency. Furthermore, the split-type test rack facilitates the use of forklifts or other vehicles for transporting the test rack. After testing, the test rack can be automatically removed by an automated forklift, and a test rack containing untested products can be automatically installed, meeting the production needs of automated workshops. Attached Figure Description

[0020] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar mechanisms or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0021] Figure 1 This is a structural schematic diagram of one embodiment of the present invention;

[0022] Figure 2 yes Figure 1 Schematic diagram of the internal structure of the test chamber in the illustrated embodiment Figure 1 ;

[0023] Figure 3 yes Figure 1 Schematic diagram of the internal structure of the test chamber in the illustrated embodiment Figure 2 ;

[0024] Figure 4 yes Figure 2 Enlarged view of the structure of region A in the illustrated embodiment;

[0025] Figure 5 yes Figure 1 The schematic diagram of the circulating air duct in the embodiment shown is as follows;

[0026] Figure 6 yes Figure 1 The schematic diagram of the test fixture in the embodiment shown Figure 1 ;

[0027] Figure 7 yes Figure 1 The schematic diagram of the test fixture in the illustrated embodiment Figure 2 ;

[0028] The annotations in the attached figures are explained as follows:

[0029] 1. Test chamber; 11. Test cavity; 12. Air duct assembly; 121. Circulating air duct; 122. Air outlet; 123. Air return outlet; 124. Air guide frame; 13. Sealing strip; 2. Test frame; 21. Frame body; 22. Hollow layer board; 221. Air inlet; 222. Second air outlet; 23. Product under test; 24. Wall panel; 241. Ventilation opening; 25. Test circuit board; 3. Pulley assembly; 31. Wheel frame; 32. Roller; 4. Locking assembly; 41. Fixing component; 42. Hook; 5. Positioning sensor. Detailed Implementation

[0030] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the technical features involved in the different embodiments of this utility model described below may be combined with each other as long as they do not conflict with each other.

[0032] Reference Appendix Figure 1-7 The split-type charged aging test device in this embodiment includes:

[0033] Test chamber 1 includes a test chamber 11 and a duct assembly 12 that communicates with the test chamber 11 and forms a circulating airflow. The duct assembly 12 includes a circulating airflow 121 disposed around the test chamber 11, an air outlet 122 opened on the first inner wall of the test chamber 11 and connected to one end of the circulating airflow 121, and a return air outlet 123 opened on the second inner wall of the test chamber 11 opposite to the first inner wall and connected to the other end of the circulating airflow 121.

[0034] The test rack 2 includes a frame 21, several hollow shelves 22 arranged vertically on the frame 21, and a test station (not shown in the figure) set on the hollow shelves 22 for loading the product 23 to be tested. Each hollow shelf 22 has an air inlet 221 at one end and is closed at the other end. Each hollow shelf 22 has a first air outlet (not shown in the figure) at a position corresponding to the test station below it on its bottom surface.

[0035] The testing device has at least two operating states. When it is in the first operating state, the test frame 2 is disengaged from the test chamber 11 (see attached diagram). Figure 2 and attached Figure 3 The test chamber 1 is shown after being detached from the test rack 2, at which point loading, unloading, and transporting the product under test can be performed. When the testing device is in its second working state, the test rack 2 is located inside the test chamber 11, and the air inlet 221 and the air outlet 122 are opposite and connected (as shown in the attached diagram). Figure 1 As shown in the diagram, the product under test can be tested. Airflow is blown out from the outlet 122 at one end of the circulating air duct 121, then enters the hollow shelf 22 through the inlet 221 at one end of each hollow shelf 22, and blows to the product under test from the first air outlet on the bottom surface of the hollow shelf 22, thus realizing the product testing. The test rack 2 and the test box 1 are set as separate structures. When preparing for testing or when the test is finished, the testing device is put into the first working state, that is, the test rack 2 is separated from the test chamber 11. This not only facilitates the installation or removal of the product under test by the testing personnel, saving time and effort, but also allows other loaded test racks 2 to be put into the test chamber 11 during the installation or removal process, avoiding the impact of the installation or removal process on the testing efficiency, thereby improving the testing efficiency. In addition, the separate test rack also facilitates the use of forklifts and other carriers to transport the test rack 2, so that after the test structure is tested, the test rack 2 can be automatically removed by an automatic forklift and the test rack 2 loaded with untested products can be automatically installed to meet the production needs of the automated workshop.

[0036] In a more preferred embodiment, the air duct assembly 12 further includes an air guide frame 124 surrounding the air outlet 122 and fixed to the first inner wall. When the testing device is in the second working state, one side of the frame 21 abuts against the air guide frame 124, and the air inlets 221 are all located inside the air guide frame 124, thereby realizing the connection and communication between the air inlets 221 and the air outlet 122. The air guide frame 124 facilitates the quick connection and communication between the air inlets 221 and the air outlet 122 when the testing device switches from the first working state to the second working state, simply by pressing the testing frame 2 against the air guide frame 124. On the other hand, the air guide frame 124 constrains and guides the airflow blown out of the air outlet 122, preventing the airflow from escaping and ensuring the amount of gas blown into the testing frame 2.

[0037] In a more preferred embodiment, a wall panel 24 is provided on one side of the frame 21, and one end of the hollow shelf 22 is connected to the wall panel 24. The wall panel 24 is provided with ventilation openings 241 that correspond one-to-one with the air inlet 221. When the testing device is in the second working state, the wall panel 24 covers and presses against the air guide frame 124. The wall panel 24 blocks the airflow blown out of the air outlet 122, so that the airflow blown out of the air outlet 122 can only enter the hollow shelf 22 through the ventilation opening 241 and the air inlet 221, thus ensuring the amount and speed of gas blown to the product under test by the first air outlet. Multiple air outlets 122 can be configured, and in the second working state, they are connected one by one to multiple air inlets 221. In this embodiment, the structure adopted is that one air outlet 122 is configured, and in the second working state, it is connected to multiple air inlets 221 simultaneously. The projections of multiple air inlets 221 on the first inner wall of the test chamber 11 all fall within the air outlet 122, so that the airflow can enter each air inlet 221 evenly after being blown out from the air outlet 122, without generating turbulence. In another feasible technical solution, the above-mentioned air guide frame 124 can also be fixed to the wall panel 24, and the ventilation openings 241 are all located inside the air guide frame 124. When the test device is in the second working state, the first inner wall covers and abuts against the air guide frame 124, and the air outlet 221 is located inside the air guide frame 124.

[0038] In a more preferred embodiment, the air duct assembly 12 further includes a sealing strip 13 disposed along the edge of the air guide frame 124. When the testing device is in the second working state, the sealing strip 13 is clamped between the wall panel 24 and the air guide frame 124. The sealing strip 13 improves the sealing between the air guide frame 124 and the wall panel 24, preventing the gas blown out of the air outlet 122 from escaping from the gap between the air guide frame 124 and the wall panel 24, and further ensuring the amount and speed of gas flowing through the product under test.

[0039] In a more preferred embodiment, a second air outlet 222 is provided on the top surface of each hollow layer 22 at a position corresponding to the test station above it. The amount of gas blown to the product under test is further increased through the second air outlet 222, thereby improving the heat dissipation effect on the product under test and making it easier to adapt to the testing of products with high heat generation.

[0040] In a more preferred embodiment, the first air outlet is configured as an inverted cone shape with a larger top and a smaller bottom, and the second air outlet 222 is configured as a cone shape with a smaller top and a larger bottom. By configuring the first air outlet and the second air outlet 222 as cones, the space is gradually compressed during the airflow process, thereby further increasing the flow rate of the blown air.

[0041] In a more preferred embodiment, the testing device further includes at least one pair of pulley assemblies 3 disposed at the bottom of the testing chamber 11, and the at least one pair of pulley assemblies 3 are respectively located on the left and right sides of the bottom of the testing chamber 11. Each pulley assembly 3 includes a pair of wheel frames 31 fixed to the bottom surface of the testing chamber 11, and a plurality of rollers 32 rotatably connected between the pair of wheel frames 31 about a pivot arranged in the left-right direction. The plurality of rollers 32 are arranged in the front-back direction. The pulley assembly 3 improves the convenience of moving the testing frame 2 into or out of the testing chamber 11 and avoids friction between the testing frame 2 and the inner wall of the testing chamber 11, which could damage the device.

[0042] In a more preferred embodiment, the testing device further includes at least one locking component 4 disposed at the bottom of the testing chamber 11 and used to lock the position of the testing frame 2. The locking component 4 includes a fixing member 41 fixed to the bottom surface of the testing chamber 11, at least one hook 42 rotatably connected to the side of the fixing member 41, and an elastic element (not shown in the figure) connected between the fixing member 41 and the hook 42 and used to apply force to the hook 42 so that its head tends to swing backward. When the testing device is in the second working state, the head of the hook 42 abuts against the front of the testing frame 2 and applies a backward force to the testing frame 2. Specifically, the elastic element is set as a torsion spring. The locking component 4 can lock the position of the testing frame 2 after the testing frame 2 is installed in the testing chamber 11, preventing the testing frame 2 from displacing during the test and ensuring the stability of the test process.

[0043] In a more preferred embodiment, the testing device further includes a positioning sensor 5 disposed on the rear wall of the testing chamber 11, which is triggered when the testing device is in the second working state. Monitoring whether the test fixture 2 is properly installed via the positioning sensor 5 not only facilitates pre-test checks by testing personnel but also provides positioning signals to other automated testing processes, thus providing a foundation for automated testing.

[0044] In a more preferred embodiment, each test station is equipped with a test circuit board 25 for loading and testing the product under test 23. A heat sink (not shown in the figures) is connected to the back of the test circuit board 25 at the position corresponding to the product under test 23. Specifically, the test rack 2 is also provided with a first interface that is electrically connected to each test circuit board 25, and a second interface corresponding to the first interface is also provided in the test cavity 11. When the test rack 2 is inserted into the test cavity 11, the first interface and the second interface are plugged in to supply power to the test circuit board 25, thereby testing the product under test. In addition, the heat sink is configured as a finned structure and its material is copper plate to improve heat transfer efficiency and further improve heat dissipation performance.

[0045] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0046] The split-type electrical aging testing device of this invention separates the test rack and the test chamber into two parts. This allows the test rack to be removed from the test chamber before or after testing, facilitating the installation and removal of the product under test by testing personnel, saving time and effort. It also allows other loaded test racks to be installed into the test chamber during installation or removal, avoiding any impact on testing efficiency and thus improving overall testing efficiency. Furthermore, the split-type test rack facilitates the use of forklifts or other vehicles for transporting the test rack. After testing, the test rack can be automatically removed by an automated forklift, and a test rack containing untested products can be automatically installed, meeting the production needs of automated workshops.

[0047] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A split-type charged aging test device, characterized in that, include: The test chamber (1) includes a test chamber (11) and a duct assembly (12) that communicates with the test chamber (11) and forms a circulating airflow. The duct assembly (12) includes a circulating airflow (121) disposed around the test chamber (11), an air outlet (122) opened on the first inner wall of the test chamber (11) and connected to one end of the circulating airflow (121), and a return air outlet (123) opened on the second inner wall of the test chamber (11) opposite to the first inner wall and connected to the other end of the circulating airflow (121). The test rack (2) includes a frame (21), several hollow shelves (22) arranged vertically on the frame (21), and a test station set on the hollow shelves (22) for loading the product to be tested. Each hollow shelf (22) has an air inlet (221) at one end and is closed at the other end. Each hollow shelf (22) has a first air outlet at the position corresponding to the test station below it on its bottom surface. The testing device has at least two working states. When it is in the first working state, the test frame (2) is detached from the test chamber (11). When the testing device is in the second working state, the test frame (2) is located in the test chamber (11), and the air inlet (221) is connected to and communicates with the air outlet (122).

2. The split-type charged aging test device according to claim 1, characterized in that: The air duct assembly (12) also includes an air guide frame (124) that surrounds the air outlet (122) and is fixed to the first inner wall. When the test device is in the second working state, one side of the frame (21) abuts against the air guide frame (124), and the air inlets (221) are all located inside the air guide frame (124).

3. The split-type charged aging test device according to claim 2, characterized in that: A wall panel (24) is provided on one side of the frame (21). One end of the hollow layer (22) is connected to the wall panel (24), and the wall panel (24) has ventilation openings (241) that correspond one-to-one with the air inlet (221). When the test device is in the second working state, the wall panel (24) covers and abuts against the air guide frame (124).

4. The split-type charged aging test device according to claim 3, characterized in that: The air duct assembly (12) also includes a sealing strip (13) disposed along the edge of the air guide frame (124). When the test device is in the second working state, the sealing strip (13) is clamped between the wall panel (24) and the air guide frame (124).

5. The split-type charged aging test device according to claim 1, characterized in that: Each hollow laminate (22) has a second air vent (222) on its top surface corresponding to the test station above it.

6. The split-type charged aging test device according to claim 5, characterized in that: The first air outlet is set as an inverted cone shape with a larger top and a smaller bottom, and the second air outlet (222) is set as a cone shape with a smaller top and a larger bottom.

7. The split-type charged aging test device according to claim 1, characterized in that: The testing device further includes at least one pair of pulley assemblies (3) disposed at the bottom of the testing chamber (11), and at least one pair of pulley assemblies (3) are respectively located on the left and right sides of the bottom of the testing chamber (11); each pulley assembly (3) includes a pair of wheel frames (31) fixed to the bottom surface of the testing chamber (11), and a plurality of rollers (32) rotatably connected between the pair of wheel frames (31) about a rotating shaft arranged in the left and right direction, and the plurality of rollers (32) are arranged in the front and back direction.

8. The split-type charged aging test device according to claim 1, characterized in that: The testing device further includes at least one locking component (4) disposed at the bottom of the testing chamber (11) and used to lock the position of the testing frame (2). The locking component (4) includes a fixing member (41) fixed to the bottom surface of the testing chamber (11), at least one hook (42) rotatably connected to the side of the fixing member (41), and an elastic member connected between the fixing member (41) and the hook (42) and used to apply force to the hook (42) so that its head has a tendency to swing backward. When the testing device is in the second working state, the head of the hook (42) abuts against the front of the testing frame (2) and applies a backward force to the testing frame (2).

9. The split-type charged aging test device according to claim 1, characterized in that: The testing device also includes a positioning sensor (5) disposed on the rear wall of the testing chamber (11), which is triggered when the testing device is in the second working state.

10. The split-type charged aging test device according to claim 1, characterized in that: Each of the test stations is equipped with a test circuit board (25) for loading and testing the product under test. A heat sink is connected to the back of the test circuit board (25) at the position corresponding to the product under test.

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