Module power supply low-temperature test equipment

Abstract

The invention relates to the technical field of low-temperature testing, in particular to module power supply low-temperature testing equipment which comprises a machine body, a mechanical arm feeding set, a testing set, a first translation power mechanism and an air inlet mechanism are installed on the machine body, a plurality of testing bins which are separated in a sealed mode are arranged on the testing set, and at least one testing jig is arranged in each testing bin. The test fixture is arranged to position and place a to-be-tested product, the to-be-tested product is placed on the test fixture through the manipulator feeding group, and the test fixture is electrically connected with the positioned and placed to-be-tested product; the modular splitting of the bin cover, the test group main body and the air inlet mechanism is realized, namely the modular splitting of a sealing function, a positioning test function and a low-temperature air supply function is realized; when a test fixture or a circuit needs to be replaced, only the main body part of the test group needs to be replaced, and the bin cover and the air inlet mechanism do not need to be changed; similarly, the bin cover and the air inlet mechanism can be independently replaced or maintained, so that the operation and maintenance flexibility and convenience of the equipment are improved.

Description

Technical Field

[0001] This invention relates to the field of low-temperature testing technology, and in particular to a low-temperature testing device for modular power supplies. Background Technology

[0002] Before leaving the factory, modular power supplies must undergo rigorous low-temperature environment simulation testing. This simulates actual low-temperature operating conditions to verify key performance indicators such as output stability and structural integrity, ensuring that the product meets the stringent temperature adaptability requirements of industry applications. This is a necessary step to guarantee product quality and enhance market competitiveness. As the electronics manufacturing industry transforms towards intelligent and efficient operations, traditional manual low-temperature testing methods for modular power supplies are no longer sufficient to meet the demands of large-scale mass production. Manual testing is not only cumbersome and inefficient, but also suffers from poor consistency of test parameters and susceptibility to data recording errors, hindering capacity expansion and quality control. Against this backdrop, automated loading and unloading low-temperature testing equipment has emerged. This type of equipment integrates automated loading and unloading mechanisms with a low-temperature testing chamber, achieving automated flow and testing of the modular power supply process. It effectively reduces manual intervention, improves testing efficiency and data reliability, and has gradually become the mainstream equipment in the field of low-temperature testing for modular power supplies.

[0003] However, existing automated loading and unloading cryogenic testing equipment has significant structural design flaws, making it difficult to adapt to the diverse development needs of the current modular power supply market. There are numerous modular power supply models on the market, with significant differences in size, interface positions, and other aspects. Existing testing equipment uses fixed-structure designs for its core testing fixtures and positioning mechanisms, which can only match a single model or size of modular power supply. When testing different models and sizes of modular power supplies, the system must be shut down to replace the corresponding testing fixtures and positioning components. This is not only cumbersome and time-consuming, but also causes frequent opening and closing of the cryogenic testing chamber due to frequent fixture changes. During the opening of the cryogenic chamber, the entry of warm, humid air causes frost to form on the inner wall of the chamber and the surface of the testing fixtures. In severe cases, this can lead to short circuits, requiring an additional high-temperature drying process before further cooling and testing, further reducing testing efficiency and increasing testing costs.

[0004] Furthermore, as power supply testing equipment evolves towards multi-channel synchronous testing and system integration, the compatibility issues of existing equipment with single models are becoming increasingly prominent, making it difficult to integrate into the collaborative systems of modern intelligent manufacturing production lines. To meet the testing needs of different product models, companies are forced to purchase multiple dedicated testing devices, significantly increasing equipment investment and space occupancy costs, while also adding complexity to equipment maintenance and management. Therefore, how to overcome the structural limitations of existing automated loading and unloading low-temperature testing equipment and achieve efficient and stable compatibility testing for various models and sizes of modular power supplies has become a pressing technical challenge in the field of modular power supply testing equipment. Summary of the Invention

[0005] To overcome the shortcomings mentioned above, the present invention aims to provide a technical solution that can solve the above problems.

[0006] A low-temperature testing device for a modular power supply includes a body, on which a robotic arm loading group, a testing group, a first translational force mechanism, and an air intake mechanism are mounted. The testing group is provided with multiple sealed and separated testing chambers, and each testing chamber is provided with at least one testing fixture. The testing fixture is configured to position and place the product to be tested. The product to be tested is placed onto the testing fixture by the robotic arm loading group, and the testing fixture is electrically connected to the positioned product to be tested. The test set is equipped with a liftable and closable chamber cover. The first translational force mechanism is powered by a downward force mechanism, which is also powered by the chamber cover. The chamber cover opens or closes the test chamber by the action of the downward force mechanism. The chamber cover moves away from the vertical projection area of ​​the test set by the action of the first translational force mechanism, so that the robotic arm can vertically place the product to be tested onto the test fixture. An air passage is provided on the cover, and multiple valve assemblies are provided on the air passage to connect with multiple test chambers. The air passage is connected to the corresponding test chamber through the opening and closing of the valve assemblies. A first air passage connecting block is provided on one side of the cover to the air passage. When the cover is closed to seal the test chamber, the first air passage connecting block is sealed and connected to the air intake mechanism.

[0007] Preferably, the air passage includes an air passage groove formed on the chamber cover and a sealing cover fitted onto the air passage groove. Each test chamber has at least one through hole in the air passage groove. The valve assembly includes at least one piston assembly connected to the through hole and a valve cylinder for driving the piston assembly. The piston assembly moves through the sealing cover, and the valve cylinder is installed on the chamber cover. The piston assembly blocks or opens the through hole by being driven by the valve cylinder.

[0008] Preferably, the piston assembly includes a piston rod, a sealing gasket, a first sealing washer, and a first compression spring. An opening corresponding to the piston rod is provided on the cover. The piston rod movably passes through the opening and rests on the cover. The first sealing gasket is fitted onto the piston rod, and a blocking portion is provided at the upper end of the piston rod. The first compression spring is fitted onto the piston rod, and its two ends elastically abut against the first sealing gasket and the blocking portion, respectively, causing the first sealing gasket to generate compressive stress that blocks the gap between the piston rod and the cover caused by the opening. The lower end of the piston rod extends into the air passage groove. The sealing gasket is fixed to the lower end of the piston rod. A valve cylinder is used to drive the piston rod, causing the sealing gasket at the lower end of the piston rod to block or open the through hole.

[0009] Preferably, a first air passage is provided inside the first air passage connecting block. One end of the first air passage connecting block is fixed to the cover, and the other end of the first air passage connecting block extends beyond the side of the cover. One end of the first air passage is sealed and connected to the air passage through the fixed connection between the first air passage connecting block and the cover. The other end of the first air passage protrudes beyond the side of the cover corresponding to the first air passage connecting block, and protrudes along the lower end face of the first air passage connecting block. The air intake mechanism includes a lifting frame fixed to the body and a second air passage connecting block fixed to the lifting frame. A second air passage is provided inside the second air passage connecting block. One end of the second air passage protrudes upward from the second air passage connecting block, and a second sealing gasket is provided at the position of the second air passage corresponding to one end of the second air passage. The first air passage connecting block connects and connects the first air passage and the second air passage by lowering the cover, and the first air passage and the second air passage are sealed and connected by the second sealing gasket. The other end of the second air passage is connected to an air pipe connector.

[0010] Preferably, when the chamber cover is closed, a clamping mechanism is provided on the chamber cover corresponding to the vertical projection area of ​​each test fixture. The clamping mechanism includes at least two linear bearings installed on the chamber cover, a T-shaped rod movably connected to each linear bearing and extending downward into the test chamber, a pressure plate connected to the test chamber through the T-shaped rod, and a second compression spring sleeved on the T-shaped rod and elastically abutting between the pressure plate and the chamber cover. The pressure plate is used to clamp the product to be tested on the test fixture. An O-ring is provided between the linear bearing and the chamber cover, and the T-shaped rod is sealed with the chamber cover through the O-ring.

[0011] Preferably, the first translational power mechanism includes two linear guide rails fixedly installed on the machine body and located on both sides of the test chamber, two slides slidably connected to the two linear guide rails, and a translational cylinder installed on the machine body for driving the slides to slide along the linear guide rails; the downward pressure power mechanism is installed on the slides.

[0012] Preferably, the pressing power mechanism includes a gantry bracket fixedly installed on two slides and pressing cylinders installed on both sides of the gantry bracket, with the piston end of the pressing cylinder fixedly connected to the compartment cover.

[0013] Preferably, the chamber cover includes an upper air passage plate and a sealing frame installed at the lower end of the air passage plate. The sealing frame has multiple partitions inside. The chamber cover is sealed and connected to the test group through the lower end of the sealing frame, and multiple sealed and separated test chambers are formed after the sealing and connection through the partitions. The air passage, valve assembly and first air passage connecting block are all set on the air passage plate.

[0014] Preferably, the robotic arm loading assembly includes a loading conveyor line installed on the machine body, a carrier set on the loading conveyor line for positioning and placing the product to be tested, a defective product placement area set on the machine body, a barcode scanner set on the machine body, and a robotic arm body installed on the machine body. The robotic arm body is equipped with a gripping mechanism and a visual recognition SDD. The gripping mechanism and the visual recognition SDD are driven by the robotic arm body, and the driving range covers the testing group, the loading conveyor line, the defective product placement area, and the area where the barcode scanner is located.

[0015] Preferably, the machine body is divided into a test area and a clearance area. A first translational force mechanism is used to move the cover to the test area or the clearance area, and the test group is set in the test area. A power conveyor belt is installed on the machine body in the clearance area, and a second translational force mechanism is also installed on the machine body from the clearance area to the test area. Guide baffles extending to the test area are respectively provided on both sides of the power conveyor belt. The test group is configured to slide along the guide between the two guide baffles. A test connection female is provided between one end of the two guide baffles in the test area, and a test connection male corresponding to the test connection female is provided on one side of the test group. The test fixture is electrically connected to the test connection male. A pushing component is poweredly connected to the second translational force mechanism to drive the test group to slide along the guide between the two guide baffles. The test group is moved from the power conveyor belt to the test area along the guide baffle by the pushing component, and the test connection male and test connection female are inserted and engaged in the test area. Alternatively, the test group is disengaged from the test connection female by the pushing component and moves along the guide baffle to the power conveyor belt.

[0016] Compared with the prior art, the beneficial effects of the present invention are: By setting up multiple sealed and separated test chambers in the test group, with each test chamber equipped with an independent test fixture, it can simultaneously adapt to the testing of various models and sizes of modular power supplies, improving the equipment's adaptability and testing flexibility. The chamber cover adopts a composite drive method of translational movement of the first translational force mechanism and lifting of the downward pressure force mechanism. The translational movement can completely avoid the vertical feeding channel of the robotic arm feeding group, ensuring a smooth and efficient feeding process. The lifting movement ensures the sealing of the test chamber after the cover is closed, preventing low-temperature gas leakage. In addition, the air passage is connected to each test chamber through valve components, allowing independent control of the air passage of a single test chamber, facilitating differentiated testing of different test parameters. Furthermore, by cleverly utilizing the downward closing action of the chamber cover, the first air passage connecting block is simultaneously sealed and connected to the air intake mechanism, so that the chamber cover with the air passage is not constrained by the air intake mechanism, realizing the modular disassembly of the air intake mechanism and the chamber cover. Furthermore, the aforementioned structural design enables modular separation of the chamber cover, test assembly body, and air intake mechanism, achieving modular separation of sealing, positioning testing, and cryogenic gas supply functions. When it is necessary to replace the test fixture or circuit, only the test assembly body needs to be replaced, without modifying the chamber cover and air intake mechanism. Similarly, the chamber cover and air intake mechanism can also be replaced or repaired separately, improving the flexibility and convenience of equipment operation and maintenance, and reducing maintenance costs. Simultaneously, this design separates the electrical connection positioning module from the cold air supply module. In testing scenarios involving large volumes and multiple models of modular power supplies, corresponding test assembly bodies and chamber covers can be configured for different specifications and stored according to function. For example, chamber covers can be stored for airtightness requirements, while test assembly bodies can be stored for circuit performance requirements, facilitating categorized management and rapid switching, further enhancing the equipment's adaptability in large-scale production scenarios.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the test chamber in the open test chamber state installed on the machine body in this invention; Figure 3 This is a schematic diagram of the combined test chamber structure with the test group installed on the machine body in this invention; Figure 4 This is a schematic diagram of the structure of the compartment cover and the downward pressing power mechanism in this invention; Figure 5 This is a schematic diagram of the test group in the closed test chamber state in this invention; Figure 6 This is the present invention. Figure 5 Schematic diagram of the cross-sectional structure at point A in the middle; Figure 7 This is a schematic diagram of the test group in the test chamber state in this invention; Figure 8 This is a structural diagram of the disassembled state of the compartment cover, air passage, valve assembly, and clamping mechanism in this invention; Figure 9 This is a structural schematic diagram of the bottom of the compartment cover in this invention; Figure 10 This is a schematic diagram of the valve assembly in this invention; Figure 11 This is a schematic diagram of the clamping mechanism in this invention; Figure 12 This is a schematic diagram of the robotic arm loading assembly in this invention.

[0020] The reference numerals and names in the figure are as follows: Product to be tested 1, machine body 10, power conveyor belt 11, second translational motion mechanism 12, guide baffle 13, test connection female seat 14, pushing component 15, robotic arm loading assembly 20, loading conveyor line 21, carrier 22, defective product placement area 23, barcode scanner 24, robotic arm main body 25, material gripping mechanism 251, vision recognition SDD 252, test assembly 30, bin cover 31, air circuit board 311, sealing frame 312, partition 313, air circuit channel 32, air circuit groove 321, cover 322, through hole 323, valve assembly 33, piston assembly 331, valve cylinder 332, piston rod 333, sealing gasket 334 335, 336, 337, 34, 34, 34, 35, 35, 36, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 35, 45, 40, 41, 42, 43, 50, 51, 52, 53, 54, 55, 56, 57, 60, 70, 71, 72, 73, 74, 55, 56, 57, 60, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 70, 70, 71, 72 ... Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figure 1-12 In this embodiment of the invention, a low-temperature testing device for a modular power supply includes a body 10. A robotic arm loading group 20, a testing group 30, a first translational force mechanism 40, and an air intake mechanism 50 are installed on the body 10. The testing group 30 is provided with multiple sealed and separated testing chambers, and each testing chamber is provided with at least one testing fixture 60. The testing fixture 60 is configured to position and place the product to be tested 1. The product to be tested 1 is placed on the testing fixture 60 by the robotic arm loading group 20, and the testing fixture 60 is electrically connected to the positioned product to be tested 1. The test group 30 is equipped with a liftable and closable chamber cover 31. The first translational force mechanism 40 is powered by a pressing force mechanism 70, and the pressing force mechanism 70 is powered by the chamber cover 31. The chamber cover 31 opens or closes the test chamber by the action of the pressing force mechanism 70. The chamber cover 31 moves away from the vertical projection area of ​​the test group 30 by the action of the first translational force mechanism 40, so that the robotic arm loading group 20 can vertically place the product to be tested 1 onto the test fixture 60. An air passage 32 is provided on the cover 31, and multiple valve assemblies 33 are provided on the air passage 32 to connect with multiple test chambers. The air passage 32 is connected to the corresponding test chamber through the opening and closing of the valve assembly 33. A first air passage connecting block 34 is provided on one side of the cover 31 to connect with the air passage 32. When the cover 31 is closed to seal the test chamber, the first air passage connecting block 34 is sealed and connected with the air intake mechanism 50.

[0023] In the above technical solution, during operation, the first translational force mechanism 40 first drives the downward pressing force mechanism 70 and the chamber cover 31 to move as a whole, so that the chamber cover 31 moves away from the vertical projection area of ​​the test group 30, reserving a vertical channel for the loading action of the robotic arm loading group 20; then the robotic arm loading group 20 accurately places the module power supply to be tested onto the test fixture 60 in the sealed test chamber of the corresponding model and size of the test group 30, and the test fixture 60 completes the positioning of the product and realizes the electrical connection with the product; after the loading is completed, the first translational force mechanism 40... The 0-drive mechanism resets the chamber cover 31 to above the test group 30. The downward pressing mechanism 70 drives the chamber cover 31 to descend and close the test chamber, creating a sealed environment. At this time, the first air passage connection block 34 on the chamber cover 31 and the air intake mechanism 50 achieve a sealed connection. During the test, the air intake mechanism 50 delivers low-temperature gas to each test chamber through the air passage 32. The valve assembly 33 on the air passage 32 can individually control the air passage opening and closing of the corresponding test chamber, thereby completing the low-temperature test of the products in each test chamber. The test data is transmitted and recorded through the electrical connection circuit.

[0024] By setting multiple sealed and separated test chambers in the test group 30, and configuring an independent test fixture 60 in each test chamber, it can simultaneously adapt to the testing of various models and sizes of modular power supplies, improving the adaptability and testing flexibility of the equipment. The chamber cover 31 adopts a composite drive method of translation of the first translational force mechanism 40 and lifting of the downward pressure force mechanism 70. The translational movement can completely avoid the vertical feeding channel of the robotic arm feeding group 20, ensuring a smooth and efficient feeding process. The lifting movement ensures the sealing of the test chamber cover 31 after it is closed, avoiding low-temperature gas leakage. In addition, the air passage 32 is connected to each test chamber through the valve assembly 33, which can independently control the air passage of a single test chamber, facilitating differentiated testing of different test parameters. Furthermore, by cleverly utilizing the downward closing action of the chamber cover 31, the first air passage connecting block 34 is simultaneously sealed and connected to the air intake mechanism 50, so that the chamber cover 31 with the air passage 32 is not constrained by the air intake mechanism 50, realizing the modular disassembly of the air intake mechanism 50 and the chamber cover 31.

[0025] Furthermore, the aforementioned structural design enables the modular separation of the cover 31, the main body of the test group 30, and the air intake mechanism 50, thus achieving modular separation of the sealing function, positioning test function, and low-temperature air supply function. When it is necessary to replace the test fixture 60 or the circuit, only the main body of the test group 30 needs to be replaced, without modifying the cover 31 and the air intake mechanism 50. Similarly, the cover 31 and the air intake mechanism 50 can also be replaced or repaired separately, improving the flexibility and convenience of equipment operation and maintenance, and reducing operation and maintenance costs. At the same time, this design separates the electrical connection positioning module from the cold air supply module. In the testing scenario of large-volume, multi-model modular power supplies, the corresponding test group 30 main body and cover 31 can be configured for different specifications and stored according to function. The cover 31 can be stored for airtightness requirements, and the test group 30 main body can be stored for circuit performance requirements, which facilitates classification management and rapid switching, further improving the adaptability of the equipment in large-scale production scenarios.

[0026] Please see Figure 7-9 This embodiment further proposes that the air passage 32 includes an air passage groove 321 opened on the chamber cover 31 and a sealing cover 322 sealed on the air passage groove 321. The air passage groove 321 is provided with at least one through hole 323 corresponding to each test chamber. The valve assembly 33 includes at least one piston assembly 331 connected to the through hole 323 and a valve cylinder 332 for driving the piston assembly 331. The piston assembly 331 is movably passed through the sealing cover 322. The valve cylinder 332 is installed on the chamber cover 31. The piston assembly 331 blocks or opens the through hole 323 by the driving of the valve cylinder 332.

[0027] Regarding the structural design of the air passage 32, the combination of the air passage groove 321 and the cover 322, compared to the integrally formed closed air passage, enables the piston assembly 331 to cooperate with the air passage 32, allowing the piston assembly 331 to be integrated on the cover 31. This allows cold air to flow into the corresponding test chamber at different positions on the cover 31, enabling low-temperature testing of the test chamber containing the product to be tested 1, while other test chambers without the product to be tested 1 can remain in a standby state without cold air supply. This allows the test group 30 to flexibly provide cold air supply for the corresponding space when adapting to low-temperature testing of module power supplies of different sizes and models, thereby greatly reducing the power consumption of cold air supply.

[0028] In terms of design, the combined structure of the gas passage groove 321 and the cover 322 can reduce the processing difficulty and manufacturing cost. In the event of blockage or leakage in the gas passage, the inside of the gas passage groove 321 can be quickly inspected and cleaned by disassembling the cover 322, which improves the maintenance convenience of the gas passage system. The valve assembly 33 adopts the driving structure of the piston assembly 331 and the valve cylinder 332. The valve cylinder 332 drives the piston assembly 331 to realize the opening and closing control of the through hole 323. The response speed is fast and the control accuracy is high, which can accurately match the differentiated gas supply needs of different test chambers.

[0029] Please see Figure 7-10This embodiment further proposes that the piston assembly 331 includes a piston rod 333, a sealing gasket 334, a first sealing washer 335, and a first compression spring 336. An opening corresponding to the piston rod 333 is provided on the cover 322, through which the piston rod 333 movably passes. The first sealing gasket 335 is sleeved on the piston rod 333, and a blocking portion 337 is provided at the upper end of the piston rod 333. The first compression spring 336 is sleeved on the piston rod 333. The two ends of the compression spring 336 elastically abut against the first sealing washer 335 and the blocking part 337 respectively, so that the first sealing washer 335 generates compressive stress to block the gap between the piston rod 333 and the cover 322 caused by the opening. The lower end of the piston rod 333 extends into the air passage groove 321. The sealing pad 334 is fixed to the lower end of the piston rod 333. The valve cylinder 332 is used to drive the piston rod 333, so that the sealing pad 334 at the lower end of the piston rod 333 blocks or opens the through hole 323. By fitting a first sealing washer 335 and a first compression spring 336 onto the piston rod 333, the elastic resistance of the first compression spring 336 generates continuous compressive stress in the first sealing washer 335, which can tightly fit the opening of the cover 322, effectively sealing the gap between the piston rod 333 and the cover 322 caused by the opening, preventing low-temperature gas from leaking from the gap, and further enhancing the sealing performance of the gas circuit system; at the same time, the elastic buffering effect of the first compression spring 336 can also alleviate the rigid collision between the piston rod 333 and the cover 322 when the valve cylinder 332 drives the piston rod 333 to move, reducing component wear and extending the service life of the component. In addition, the piston assembly 331 has a simple and compact structural design, and the components are easy to disassemble and assemble. When vulnerable parts such as the sealing gasket 334 and sealing gasket are aged and damaged, they can be quickly replaced and maintained, reducing maintenance costs. Furthermore, the fixed connection between the sealing gasket 334 and the piston rod 333 ensures the sealing effect of the through hole 323, avoids gas leakage caused by poor sealing, ensures the independence and stability of the gas supply to each test chamber, and thus improves the accuracy of the test data.

[0030] Please see Figure 5-7This embodiment further proposes that a first air passage 341 is provided inside the first air passage connecting block 34. One end of the first air passage connecting block 34 is fixed to the cover 31, and the other end of the first air passage connecting block 34 extends beyond the side of the cover 31. One end of the first air passage 341 is sealed and connected to the air passage 32 through the fixed connection between the first air passage connecting block 34 and the cover 31. The other end of the first air passage 341 protrudes beyond the side of the cover 31 corresponding to the first air passage connecting block 34, and protrudes along the lower end face of the first air passage connecting block 34. The air intake mechanism 50 includes a lifting frame 51 fixed to the body 10 and a second air intake mechanism fixed to the lifting frame 51. The second air passage 52 has a second air channel 53 inside. One end of the second air channel 53 protrudes upward from the second air passage 52, and a second sealing gasket 54 is provided at the corresponding end of the second air channel 53 on the second air passage 52. The first air passage 34 is connected to the second air channel 53 by the downward movement of the cover 31, and the first air channel 341 and the second air channel 53 are sealed and connected by the second sealing gasket 54. The other end of the second air channel 53 is connected to an air pipe connector 55. The air intake mechanism 50 is connected to a cold air supply device 56 through the air pipe connector 55. This technical solution can also be connected to... The high-temperature testing is achieved by connecting a hot gas supply device, which can be flexibly selected according to actual testing needs. In this technical solution, the first air passage connecting block 34 adopts a structural design with one end fixed to the bin cover 31 and the other end extending beyond the side of the bin cover 31. The other end of the first air passage 341 protrudes along the lower end face of the connecting block. Combined with the combination of the lifting frame 51 in the air intake mechanism 50 and the second air passage connecting block 52, the air passage docking position avoids the test chamber area directly below the bin cover 31. This avoids interference with the sealing structure of the test chamber and the feeding action, and provides sufficient space for the installation layout of the air intake mechanism 50, improving the overall structural rationality of the equipment. This method of moving the bin cover 31 downwards... The first air passage 341 and the second air passage 53 are connected and docked simultaneously without the need for an additional drive mechanism to control the air passage docking, simplifying the equipment control logic. At the same time, the second sealing gasket 54 is used to achieve a sealed connection between the two air passages. Combined with the sealing design of the fixed connection between the first air passage connecting block 34 and the cover 31, a double sealing guarantee is formed, which effectively avoids the leakage of low temperature gas at the docking point and ensures the sealing reliability of the air passage system. This structural design further strengthens the modular disassembly of the cover 31 and the air intake mechanism 50, so that the two do not interfere with each other during installation and maintenance, improving the operation and maintenance flexibility of the equipment. At the same time, it adapts to the replacement needs of different specifications of the cover 31, enhancing the overall adaptability of the equipment.

[0031] Please see Figure 7 , Figure 8 and Figure 11In this embodiment, when the chamber cover 31 is closed, a pressing mechanism 35 is provided on the chamber cover 31 corresponding to the vertical projection area of ​​each test fixture 60. The pressing mechanism 35 includes at least two linear bearings 351 installed on the chamber cover 31, a T-shaped rod 352 movably connected to each linear bearing 351 and extending downward into the test chamber, a pressure plate 353 connected to the test chamber through the T-shaped rod 352, and a second compression spring 354 sleeved on the T-shaped rod 352 and elastically abutting between the pressure plate 353 and the chamber cover 31. The pressure plate 353 is used to press the product 1 to be tested on the test fixture 60. An O-ring 355 is provided between the linear bearing 351 and the chamber cover 31, and the T-shaped rod 352 is sealed with the chamber cover 31 through the O-ring 355. In this embodiment, the clamping mechanism 35, through a combination structure of linear bearing 351, T-shaped rod 352, pressure plate 353, and second compression spring 354, drives the pressure plate 353 to clamp the product 1 to be tested by means of the elastic resistance of the second compression spring 354. This ensures stable contact between the product and the test fixture 60, guarantees the reliability of electrical connections, and avoids test interruption or data distortion due to product displacement during low-temperature testing. Furthermore, the elastic buffering effect of the second compression spring 354 prevents rigid compression damage to the product. This adapts to the clamping requirements of products with different thicknesses and specifications, improving the equipment's compatibility with multiple product models. Each test fixture 60 is equipped with an independent clamping mechanism 35, enabling single-stage clamping. The precise clamping of products within the test chamber, combined with the multi-sealed test chamber structure design, further ensures the stability of simultaneous testing of multiple product models. Furthermore, an O-ring 355 is installed between the linear bearing 351 and the chamber cover 31 to achieve a sealed fit between the T-bar 352 and the chamber cover 31, effectively sealing the gap between the moving parts of the clamping mechanism 35 and the chamber cover 31, preventing the leakage of low-temperature gas from this gap, and ensuring the sealing performance and low-temperature environment stability of the test chamber. Simultaneously, the linear bearing 351 makes the lifting and lowering movement of the T-bar 352 smoother, reducing the stress and wear on the chamber cover 31, improving the operational stability of the mechanism, and the overall structure is easy to disassemble and assemble, facilitating subsequent maintenance and further reducing equipment operation and maintenance costs.

[0032] Please see Figure 1-3This embodiment further proposes that the first translational force mechanism 40 includes two linear guide rails 41 fixedly installed on the body 10 and located on both sides of the test chamber, two slides 42 slidably connected to the two linear guide rails 41, and a translational cylinder 43 installed on the body 10 for driving the slides 42 to slide along the linear guide rails 41; the downward pressure force mechanism 70 is installed on the slides 42. The system employs a symmetrical design with two linear guide rails 41, two slides 42, and a translation cylinder 43. The two linear guide rails 41 are symmetrically arranged on both sides of the test chamber, making the sliding support of the slides 42 more balanced and stable. This effectively avoids problems such as tilting and jamming during the translation of the slides 42 and the chamber cover 31, ensuring the accuracy and stability of the translation of the chamber cover 31. The translation cylinder 43 directly drives the slides 42 to slide along the linear guide rails 41. The transmission link is simple, the response speed is fast, and it can accurately control the translation of the chamber cover 31 into place, ensuring that a sufficient and accurate vertical feeding channel is reserved for the robotic arm loading group 20. At the same time, the structure is reasonably laid out. The linear guide rails 41 and the translation cylinder 43 are both fixed to the machine body 10, which is securely installed and easy to disassemble and assemble, facilitating subsequent maintenance. The symmetrical structure can distribute the force during the movement, reduce component wear, extend the service life of the mechanism, and adapt to the long-term high-frequency automated testing requirements of the equipment.

[0033] Please see Figure 2-4 This embodiment further proposes that the pressing power mechanism 70 includes a gantry bracket 71 fixedly installed on two slides 42 and a pressing cylinder 72 installed on both sides of the gantry bracket 71. The piston end of the pressing cylinder 72 is fixedly connected to the compartment cover 31. The downward pressing power mechanism 70 is securely connected to the two sliding tables 42 via the gantry bracket 71, ensuring that the force of the downward pressing power mechanism 70 is evenly transmitted to the two sliding tables 42, thus guaranteeing the connection stability of the overall structure. At the same time, the downward pressing cylinders 72 are symmetrically installed on both sides of the gantry bracket 71, which can provide downward pressure from both sides of the cover 31, so that the cover 31 is subjected to balanced force during the lowering and closing process, avoiding the tilting of the cover 31 due to unilateral force, ensuring that the cover 31 is precisely aligned with the test chamber and tightly closed, further improving the sealing performance of the test chamber. In addition, the structural design of the gantry bracket 71 provides stable support for the installation of the downward pressing cylinders 72, and the overall structure is simple and compact, easy to disassemble and assemble, and allows for adjustment of the installation position and parameters of the downward pressing cylinders 72 according to the specifications of the cover 31, adapting to the lifting requirements of different specifications of the cover 31, which is in line with the modular design concept of the equipment and improves the overall adaptability and flexibility of the equipment.

[0034] Please see Figure 7-9This embodiment further proposes that the chamber cover 31 includes an upper gas path plate 311 and a sealing frame 312 installed at the lower end of the gas path plate 311. The sealing frame 312 has multiple partitions 313 inside. The chamber cover 31 is sealed and connected to the test group 30 through the lower end of the sealing frame 312, and multiple sealed and separated test chambers are formed after the sealing and connection through the partitions 313. The gas path channel 32, valve assembly 33 and first gas path connecting block 34 are all set on the gas path plate 311. The sealing frame 312 is sealed and connected to the test group 30 through the lower end. The sealing and connection with the test group 30 can be achieved by setting a gasket at the lower end of the sealing frame 312. At the same time, multiple sealed and separated test chambers are directly formed by the internal partitions 313, without the need to set an additional independent chamber structure in the test group 30, which simplifies the structural design of the test group 30. Moreover, the partitions 313 and the sealing frame 312 are integrally formed, which can ensure the sealing and isolation effect between each test chamber, avoid the crossflow of low temperature gas between different test chambers, and ensure the environmental independence when multiple models of products are tested simultaneously.

[0035] Please see Figure 1 and Figure 12This embodiment further proposes that the robotic arm loading group 20 includes a loading conveyor line 21 installed on the machine body 10, a carrier 22 set on the loading conveyor line 21 for positioning and placing the product to be tested 1, a defective product placement area 23 set on the machine body 10, a barcode scanner 24 set on the machine body 10, and a robotic arm body 25 installed on the machine body 10. The robotic arm body 25 is provided with a gripping mechanism 251 and a visual recognition SDD 252. The gripping mechanism 251 and the visual recognition SDD 252 are driven by the robotic arm body 25, and the driving range covers the area where the test group 30, the loading conveyor line 21, the defective product placement area 23 and the barcode scanner 24 are located. In the above embodiments, the automated conveying and pre-positioning of the product to be tested 1 is achieved through the cooperation of the feeding conveyor line 21 and the carrier 22. The robotic arm body 25 drives the gripping mechanism 251 to automatically grasp and transfer the product, covering multiple key areas such as the test group 30 and the feeding conveyor line 21. This automates the feeding process, reduces manual intervention, and meets the high-efficiency testing requirements of large-scale mass production. Furthermore, the robotic arm body 25 is equipped with a vision recognition SDD 252, which can accurately identify the position information of the product on the carrier 22 and the test fixture 60, guiding the gripping mechanism 251 to achieve precise grasping and positioning. This effectively avoids feeding failures or poor electrical connections caused by product positioning deviations, improving efficiency. The system ensures accurate material feeding and stable testing. Furthermore, by integrating a barcode scanner unit 24 with a defective product placement area 23, model identification and information entry can be completed via barcode scanning before product feeding, facilitating subsequent data traceability and management. It also allows for the timely transfer of defective products to the defective product placement area 23, achieving closed-loop management of the testing process and improving testing quality control. In addition, the overall structure is compact and highly integrated, with components working together to achieve integrated operations for feeding, identification, transfer, and defective product sorting. This simplifies the overall equipment design, improves the continuity and efficiency of the testing process, and aligns with the core requirement of adapting to multiple equipment models, further enhancing the automation and intelligence of the equipment.

[0036] Please see Figure 1-5This embodiment further proposes that the body 10 is divided into a test area and a clearance area. The first translational force mechanism 40 is used to drive the cover 31 to move to the test area or the clearance area. The test group 30 is set in the test area. By dividing the body 10 into a test area and a clearance area, and cooperating with the first translational force mechanism 40 to drive the cover 31 to switch between the two areas, sufficient operating space is reserved for the replacement of the test group 30, avoiding interference of the cover 31 with the transfer action of the test group 30, and improving the rationality of the structural layout. A power conveyor belt 11 is installed on the body 10 in the clearance area. A second translational force mechanism 12 from the clearance area to the test area is also installed on the body 10. Guide baffles 13 extending to the test area are respectively provided on both sides of the power conveyor belt 11. The test group 30 is configured to slide along the guide between the two guide baffles 13. A test connection female 14 is provided between the two guide baffles 13 at one end of the test area. A test connection male 36 corresponding to the test connection female 14 is provided on one side of the test group 30. Test fixture 6 The test connection male 36 is electrically connected to the second translational force mechanism 12, and a pusher 15 is powered to drive the test group 30 to slide between the two guide baffles 13. The test group 30 is driven by the pusher 15 to move from the power conveyor belt 11 along the guide baffles 13 to the test area, and in the test area, the test connection male 36 is inserted and engaged with the test connection female 14, or the test group 30 is driven by the pusher 15 to disengage from the test connection female 14 and move along the guide baffles 13 to the power conveyor belt 11.With the coordinated action of the power conveyor belt 11, guide baffle 13, and second translational motion mechanism 12, the automated transfer of the test group 30 is achieved. No manual handling of the test group 30 is required. It can quickly move test groups 30, adapted to different product models, from the clearance area to the testing area, or move them back to the clearance area after testing, shortening the test group 30 changeover time and improving the switching efficiency for testing multiple product models. Simultaneously, the guide baffle 13 provides precise guidance for the sliding of the test group 30, ensuring its smooth transfer to the testing area and precise alignment with the test connection female 14. In terms of configuration, the test group 30 achieves a pluggable electrical connection with the test connection female 14 in the testing area through the test connection male 36, in conjunction with the pushing component 1. The drive of the 5-axis enables automatic plugging and unplugging, eliminating the need for manual wiring and simplifying the installation and commissioning process of the test set 30. The plug-in connection structure ensures reliable contact, guaranteeing the stability of the electrical connection between the test fixture 60 and the external test system, and improving the accuracy of test data. Furthermore, this structure further enhances the modular design of the equipment. The test set 30 can be stored and transported as an independent unit on the power conveyor belt 11, allowing companies to prefabricate multiple sets of test sets 30 adapted to different models according to their testing needs, enabling rapid model changeover testing. In the event of a malfunction in the test set 30, it can be directly moved to a designated area or removed from the equipment for repair without disassembling other components, significantly improving maintenance convenience and reducing the impact of maintenance on testing efficiency.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A low-temperature testing device for modular power supplies, characterized in that, Includes a body (10), on which a robotic arm loading group (20), a test group (30), a first translational force mechanism (40) and an air intake mechanism (50) are installed. The test group (30) is provided with multiple sealed test chambers, and each test chamber is provided with at least one test fixture (60). The test fixture (60) is set to position the product to be tested (1). The product to be tested (1) is placed on the test fixture (60) by the robotic arm loading group (20), and the test fixture (60) is electrically connected to the positioned product to be tested (1). The test group (30) is equipped with a liftable and closable chamber cover (31). The first translational force mechanism (40) is powered by a pressing force mechanism (70), and the pressing force mechanism (70) is powered by the chamber cover (31). The chamber cover (31) is opened or closed by the pressing force mechanism (70). The chamber cover (31) is moved away from the vertical projection area of ​​the test group (30) by the first translational force mechanism (40), so that the robotic arm loading group (20) can vertically place the product to be tested (1) onto the test fixture (60). An air passage (32) is provided on the cover (31), and multiple valve assemblies (33) are provided on the air passage (32) to connect with multiple test chambers. The air passage (32) is connected to the corresponding test chamber through the opening and closing of the valve assembly (33). A first air passage connecting block (34) is provided on one side of the cover (31) to connect with the air passage (32). When the cover (31) is closed to seal the test chamber, the first air passage connecting block (34) is sealed and connected with the air intake mechanism (50).

2. The low-temperature testing equipment for a modular power supply according to claim 1, characterized in that, The air passage (32) includes an air passage groove (321) opened on the chamber cover (31) and a sealing cover (322) closed on the air passage groove (321). The air passage groove (321) is provided with at least one through hole (323) corresponding to each test chamber. The valve assembly (33) includes at least one piston assembly (331) connected to the through hole (323) and a valve cylinder (332) for driving the piston assembly (331). The piston assembly (331) is movably passed through the sealing cover (322). The valve cylinder (332) is installed on the chamber cover (31). The piston assembly (331) blocks or opens the through hole (323) by the driving of the valve cylinder (332).

3. The low-temperature testing equipment for a modular power supply according to claim 2, characterized in that, The piston assembly (331) includes a piston rod (333), a sealing gasket (334), a first sealing washer (335), and a first compression spring (336). An opening corresponding to the piston rod (333) is provided on the cover (322). The piston rod (333) is movably inserted through the opening onto the cover (322). The first sealing gasket (335) is fitted onto the piston rod (333), and a blocking part (337) is provided at the upper end of the piston rod (333). The first compression spring (336) is fitted onto the piston rod (333). The two ends of 36) elastically abut against the first sealing gasket (335) and the blocking part (337) respectively, so that the first sealing gasket (335) generates compressive stress to block the gap between the piston rod (333) and the cover (322) caused by the opening. The lower end of the piston rod (333) extends into the air passage groove (321). The sealing gasket (334) is fixed at the lower end of the piston rod (333). The valve cylinder (332) is used to drive the piston rod (333) so that the sealing gasket (334) at the lower end of the piston rod (333) blocks or opens the through hole (323).

4. The low-temperature testing equipment for a modular power supply according to claim 1, characterized in that, The first air passage (34) is provided with a first air passage (341). One end of the first air passage (34) is fixed to the cover (31), and the other end of the first air passage (34) extends beyond the side of the cover (31). One end of the first air passage (341) is sealed and connected to the air passage (32) through the fixed connection between the first air passage (34) and the cover (31). The other end of the first air passage (341) protrudes beyond the side of the cover (31) of the first air passage (34), and the other end of the first air passage (341) protrudes along the lower end face of the first air passage (34). The air intake mechanism (50) includes a lifting frame (51) fixed on the body (10) and a second air passage connecting block (52) fixed on the lifting frame (51). A second air passage (53) is provided in the second air passage connecting block (52). One end of the second air passage (53) protrudes upward from the second air passage connecting block (52), and a second sealing gasket (54) is provided at the position of one end of the second air passage (53) corresponding to the second air passage (53). The first air passage connecting block (34) connects the first air passage (341) and the second air passage (53) by moving the cover (31) downward, and the first air passage (341) and the second air passage (53) are sealed and connected by the second sealing gasket (54). The other end of the second air passage (53) is connected to an air pipe connector (55).

5. The low-temperature testing equipment for a modular power supply according to claim 1, characterized in that, When the chamber cover (31) is closed, a clamping mechanism (35) is provided on the vertical projection area of ​​each test fixture (60) on the chamber cover (31). The clamping mechanism (35) includes at least two linear bearings (351) installed on the chamber cover (31), a T-shaped rod (352) movably connected to each linear bearing (351) and extending downward into the test chamber, a pressure plate (353) connected to the test chamber through the T-shaped rod (352), and a second compression spring (354) sleeved on the T-shaped rod (352) and elastically abutting between the pressure plate (353) and the chamber cover (31). The pressure plate (353) is used to clamp the product (1) to be tested on the test fixture (60). An O-ring (355) is provided between the linear bearing (351) and the chamber cover (31), and the T-shaped rod (352) is sealed with the chamber cover (31) through the O-ring (355).

6. The low-temperature testing equipment for a modular power supply according to claim 1, characterized in that, The first translational power mechanism (40) includes two linear guide rails (41) fixedly installed on the body (10) and located on both sides of the test chamber, two slides (42) slidably connected to the two linear guide rails (41), and a translational cylinder (43) installed on the body (10) for driving the slides (42) to slide along the linear guide rails (41); the downward power mechanism (70) is installed on the slides (42).

7. A low-temperature testing device for a modular power supply according to claim 6, characterized in that, The pressing power mechanism (70) includes a gantry bracket (71) fixedly mounted on two slides (42) and pressing cylinders (72) mounted on both sides of the gantry bracket (71). The piston end of the pressing cylinder (72) is fixedly connected to the cover (31).

8. The low-temperature testing equipment for a modular power supply according to claim 1, characterized in that, The chamber cover (31) includes an upper air passage plate (311) and a sealing frame (312) installed at the lower end of the air passage plate (311). The sealing frame (312) has multiple partitions (313) inside. The chamber cover (31) is sealed and connected to the test group (30) through the lower end of the sealing frame (312), and multiple sealed test chambers are formed after the sealing and connection through the partitions (313). The air passage (32), valve assembly (33) and first air passage connection block (34) are all set on the air passage plate (311).

9. A low-temperature testing device for a modular power supply according to claim 1, characterized in that, The robotic arm loading group (20) includes a loading conveyor line (21) installed on the machine body (10), a carrier (22) set on the loading conveyor line (21) for positioning and placing the product to be tested (1), a defective product placement area (23) set on the machine body (10), a barcode scanner (24) set on the machine body (10), and a robotic arm body (25) installed on the machine body (10). The robotic arm body (25) is equipped with a gripping mechanism (251) and a visual recognition SDD (252). The gripping mechanism (251) and the visual recognition SDD (252) are driven by the robotic arm body (25), and the driving range covers the area where the test group (30), the loading conveyor line (21), the defective product placement area (23), and the barcode scanner (24) are located.

10. A low-temperature testing device for a modular power supply according to claim 1, characterized in that, The machine body (10) is divided into a test area and a clearance area. A first translational force mechanism (40) is used to move the cover (31) to the test area or the clearance area. The test group (30) is set in the test area. A power conveyor belt (11) is installed on the machine body (10) in the clearance area. A second translational force mechanism (12) is also installed on the machine body (10) from the clearance area to the test area. Guide baffles (13) extending to the test area are respectively provided on both sides of the power conveyor belt (11). The test group (30) is set to slide along the guide between the two guide baffles (13). A test connection female seat (14) is provided between the two guide baffles (13) at one end of the test area. A test connection female seat (14) is provided on one side of the test group (30). There is a test connection male (36) corresponding to the test connection female (14). The test fixture (60) is electrically connected to the test connection male (36). A pusher (15) for driving the test group (30) to slide between two guide baffles (13) is powered on the second translational force mechanism (12). The test group (30) is driven by the pusher (15) to move from the power conveyor belt (11) along the guide baffle (13) to the test area. In the test area, the test connection male (36) is inserted and engaged with the test connection female (14). Alternatively, the test group (30) is driven by the pusher (15) to disengage from the test connection female (14) and move along the guide baffle (13) to the power conveyor belt (11).

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