Direct-current power supply aging test system and method

Abstract

The invention relates to the technical field of power supply testing, and discloses a direct-current power supply aging test system and method. On the basis that the insulation performance is qualified, an extreme working environment is simulated, the insulation strength is verified through high-power working voltage, potential breakdown hazards are effectively found, and long-term stable operation is guaranteed. And thirdly, the deep test module accurately detects the depth of recesses and scratches on the surface of the shell based on a sensor, scientifically evaluates the mechanical strength and protection integrity of the shell through the residual thickness and the number and distribution condition of the approaching defects, and timely identifies risk points which may evolve into significant defects. Particularly, strict judgment on the number of surfaces close to defects and the mutual distance is helpful for preventing local damage from deteriorating into structural failure, and the safety of internal elements is further ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply testing, and in particular to a direct current power supply aging testing system and method. Background Art

[0002] A DC power supply is a device that provides stable DC voltage or current. It converts alternating current (AC) into direct current (DC), or directly outputs DC power to drive various electronic devices and circuits.

[0003] A DC power supply can experience a variety of problems after aging. First, component performance degradation can lead to unstable output voltage or current. For example, reduced capacitor capacity can increase ripple, and aging semiconductor devices can reduce conversion efficiency, affecting the overall performance and reliability of the power supply. Second, thermal stress generated by long-term operation can accelerate the aging of internal components, potentially causing loose connections, cracked solder joints, or aging of circuit boards, leading to intermittent faults or even complete failure. Furthermore, aging can cause protective functions to fail, such as insensitive overcurrent and overvoltage protection, increasing the risk of equipment damage. It can be seen that after DC power supply ages, there are multiple problems such as performance degradation, safety hazards and reduced reliability. These problems need to be prevented and addressed through regular maintenance and testing to extend the power supply life and ensure stable system operation. Therefore, a DC power supply aging test system and method are proposed here. Summary of the Invention

[0004] In view of the above problems in the prior art, the present invention aims to provide a DC power supply aging test system and method, so as to perform aging test on the DC power supply.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a DC power supply aging test system, comprising: an insulation resistance acquisition module, which is used to obtain the insulation resistance values of the input and output ends, the input end and the shell, and the output end and the shell of the DC power supply through a megohmmeter, and set the insulation resistance value threshold according to industry specifications; an insulation resistance comparison module, which is used to compare the insulation resistance values of the input and output ends, the input end and the shell, and the output end and the shell with the insulation resistance value threshold respectively, when the insulation resistance values of the input and output ends are greater than or equal to the insulation resistance value threshold, the insulation performance of the input and output ends meets the requirements; when the insulation resistance values of the input and output ends are greater than or equal to the insulation resistance value threshold, the insulation performance of the input and output ends meets the requirements; when the insulation resistance values of the input and output ends are greater than or equal to the insulation resistance value threshold, the insulation performance of the input and output ends meets the requirements; When the insulation resistance value of the output terminal and the casing is greater than or equal to the insulation resistance value threshold, the insulation performance of the output terminal and the casing meets the requirements. When the insulation performance of all three meets the requirements, the insulation performance of the DC power supply meets the requirements; a withstand voltage test module is used to apply a DC voltage that is multiple times higher than the working voltage to the input terminal and the output terminal, the input terminal and the casing, and the output terminal and the casing during the test cycle. If the three pairs of insulation parts are normal, the withstand voltage performance of the DC power supply meets the requirements; if there is an abnormality in the insulation part of the three pairs of insulation parts, the withstand voltage performance of the DC power supply does not meet the requirements; an in-depth test module is used to obtain the depth of the dents on the casing of the DC power supply, take the maximum value as the maximum depth, and use the distance between the maximum depth and the inner wall of the casing to judge whether the protective performance of the casing meets the requirements.

[0006] In some embodiments, a specific method for using the distance between the maximum depth and the inner wall of the shell to determine whether the protective performance of the shell meets the requirements is: obtaining the shell thickness, subtracting the maximum depth from the shell thickness to obtain the remaining thickness, comparing the remaining thickness with half of the shell thickness, and obtaining different responses based on the comparison results.

[0007] In some embodiments, if the remaining thickness is greater than half the thickness of the shell, it means that the maximum depth of the dent is less than half the thickness of the shell, and the shell provides sufficient protection for the DC power supply. In this case, the protective performance of the shell meets the requirements; if the remaining thickness is less than or equal to half the thickness of the shell, it means that the maximum depth of the dent has reached or exceeded half the thickness of the shell, and the protection of the shell against the DC power supply is reduced. In this case, the protective performance of the shell does not meet the requirements.

[0008] In some embodiments, a shell half-thickness proximity threshold that is less than half the shell thickness is preset. When the remaining thickness is greater than half the shell thickness, the dent depth is compared with the shell half-thickness proximity threshold. If the dent depth is greater than or equal to the shell half-thickness proximity threshold, it is marked as a proximity defect; if the dent depth is less than the shell half-thickness proximity threshold, it is marked as a non-proximity defect; the number of proximity defects is obtained. If the number of proximity defects is greater than or equal to the number of half the shell surfaces, the number of proximity defects on the six surfaces of the shell is obtained, and it is recorded as the number of surfaces with proximity defects. Different responses are made according to the number of defective surfaces. If the number of proximity defects is less than the number of half the shell surfaces, the protective performance of the shell meets the requirements.

[0009] In some embodiments, if the number of surfaces approaching defects is greater than or equal to half of the surfaces of the shell, it means that at least half of the six surfaces of the shell have surfaces approaching defects. In this case, the protective performance of the shell does not meet the requirements; if the number of surfaces approaching defects is less than half of the surfaces of the shell, it means that the number of surfaces approaching defects on the six surfaces of the shell is small. In this case, the protective performance of the shell meets the requirements.

[0010] In some embodiments, when the number of proximity defects is less than the number of faces of half the shell, the number of proximity defects is one or two. When there are two defects, the distribution positions of the two proximity defects are obtained, and different responses are taken according to the difference in the distribution positions of the two.

[0011] In some embodiments, if the two proximity defects are distributed on different surfaces of the shell, the protective performance of the shell meets the requirements; if the two proximity defects are distributed on one surface of the shell, the closest distance between the two proximity defects is obtained, and at the same time, the closest distance threshold is set according to experience, and the closest distance is compared with the closest distance threshold, and different responses are obtained according to the comparison results.

[0012] In some embodiments, if the closest distance is greater than the closest distance threshold, it means that the distance between the two approaching defects is far. In this case, the protective performance of the shell meets the requirements; if the closest distance is less than or equal to the closest distance threshold, it means that the distance between the two approaching defects is close. In this case, the protective performance of the shell does not meet the requirements.

[0013] The present invention further provides a DC power supply aging test method, which is used to implement the above-mentioned system, including: step 1, obtaining the insulation resistance values of the input end and the output end, the input end and the shell, and the output end and the shell of the DC power supply, and setting the insulation resistance value threshold according to industry specifications; step 2, comparing the insulation resistance values of the input end and the output end, the input end and the shell, and the output end and the shell with the insulation resistance value threshold respectively, when the insulation resistance values of the input end and the output end are greater than or equal to the insulation resistance value threshold, the insulation performance of the input end and the output end meets the requirements; when the insulation resistance values of the input end and the shell are greater than or equal to the insulation resistance value threshold, the insulation performance of the input end and the output end meets the requirements; when the insulation resistance values of the input end and the shell are greater than or equal to the insulation resistance value threshold, the insulation performance of the input end and the shell meets the requirements; when the insulation resistance values of the output end and the shell are greater than or equal to the insulation resistance value threshold, the insulation performance of the input end and the shell meets the requirements; When the insulation resistance value of the input terminal and the output terminal, the input terminal and the housing are greater than or equal to the insulation resistance value threshold, the insulation performance of the output terminal and the housing meets the requirements. When the insulation performance of the three meets the requirements, the insulation performance of the DC power supply meets the requirements. Step three, during the test cycle, apply a DC voltage that is multiple times higher than the working voltage to the input terminal and the output terminal, the input terminal and the housing, and the output terminal and the housing. If the three pairs of insulation parts are normal, the withstand voltage performance of the DC power supply meets the requirements. If there is an insulation part in the three pairs of insulation parts that is abnormal, the withstand voltage performance of the DC power supply does not meet the requirements. Step four, obtain the depth of the dents on the housing of the DC power supply, take the maximum value as the maximum depth, and use the distance between the maximum depth and the inner wall of the housing to judge whether the protective performance of the housing meets the requirements.

[0014] The present invention further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement the above-mentioned DC power supply aging test system.

[0015] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The present invention implements a multi-level, comprehensive safety performance assessment through insulation testing, voltage withstand testing, and in-depth defect detection modules, significantly improving the reliability and safety of the device. First, the insulation test module accurately determines the insulation condition between the DC power supply input and output terminals and the housing, ensuring that electrical isolation meets industry standards and preventing leakage and short-circuit risks. Second, the voltage withstand test module, based on qualified insulation performance, simulates extreme operating environments and verifies insulation strength through high-voltage operation, effectively identifying potential breakdown hazards and ensuring long-term stable operation. Third, the in-depth test module uses sensors to accurately detect the depth of dents and scratches on the housing surface. Based on the remaining thickness and the number and distribution of near-defects, it scientifically assesses the mechanical strength and protective integrity of the housing, promptly identifying risk points that may develop into significant defects. In particular, strict determination of the number of near-defect surfaces and their distance from each other helps prevent local damage from deteriorating into structural failure, further ensuring the safety of internal components. Overall, the system achieves multi-dimensional control from electrical insulation to mechanical protection, effectively reducing failure rates and accident risks, and extending the service life and operational safety of the DC power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the system module of the present invention; Figure 2 Schematic diagram of the method steps of the present invention. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0019] The DC power supply aging test system provided by the present invention is as follows: Figure 1 and Figure 2 Shown, including: The insulation test module, when powered off, connects the test leads of a megohmmeter between the two insulated sections of a DC power supply to obtain insulation resistance values. The two insulated sections of a DC power supply consist of three pairs: the input and output, the input and housing, and the output and housing. Therefore, three insulation resistance values are obtained: the input and output insulation resistance, the input and housing insulation resistance, and the output and housing insulation resistance. After obtaining the insulation resistance values, an insulation resistance threshold is set according to industry standards. Each of the three insulation resistance values is compared with the insulation resistance threshold, and different responses are determined based on the comparison results. If the insulation resistance of the input and output is greater than or equal to the insulation resistance threshold, the insulation performance of the input and output meets the requirements. If the insulation resistance of the input and output is less than the insulation resistance threshold, the insulation performance of the input and output does not meet the requirements. If the insulation resistance of the input and housing is greater than or equal to the insulation resistance threshold, the insulation performance of the input and housing meets the requirements. If the insulation resistance of the input and housing is less than the insulation resistance threshold, the insulation performance of the input and housing does not meet the requirements. If the insulation resistance between the output terminal and the housing is greater than or equal to the insulation resistance threshold, the insulation performance of the output terminal and the housing meets the requirements. If the insulation resistance between the output terminal and the housing is less than the insulation resistance threshold, the insulation performance of the output terminal and the housing does not meet the requirements. The insulation performance of the DC power supply meets the requirements only if the insulation performance of the input terminal and the output terminal, the insulation performance of the input terminal and the housing, and the insulation performance of the output terminal and the housing all meet the requirements.

[0020] The withstand voltage test module, assuming the DC power supply's insulation performance meets requirements, sets a test cycle. During this test cycle, the withstand voltage tester applies a DC voltage several times higher than the operating voltage to three pairs of insulation components of the DC power supply: the input and output terminals, the input and housing, and the output and housing. Different responses are taken based on the insulation's performance. If all three insulation pairs are normal, the DC power supply's withstand voltage performance meets requirements. If any of the three insulation pairs exhibits an abnormality such as insulation breakdown or leakage, the DC power supply's withstand voltage performance does not meet requirements.

[0021] For example, suppose the measured insulation resistance between the input and output terminals is 120MΩ, between the input and the housing is 150MΩ, and between the output and the housing is 130MΩ. According to industry standards, the insulation resistance threshold is set at 50MΩ. If all three sets of measured data are greater than the threshold, the insulation performance meets the requirements. The withstand voltage test then begins. Assuming the operating voltage is 100V, a DC high voltage of 300V is applied to the three pairs of insulation components, at a standard of three times the operating voltage. Maintaining this voltage for one minute without breakdown or leakage indicates a pass in withstand voltage performance. If, during the test, the insulation resistance between the input and the housing drops to 40MΩ at any point, below the threshold, the insulation performance is deemed unsatisfactory and requires further maintenance or replacement. If a breakdown occurs during the withstand voltage test, the withstand voltage performance is also deemed unsatisfactory and the power supply must be removed from service and repaired.

[0022] In the in-depth testing module, when the DC power supply's insulation and withstand voltage performance meet the requirements, the sensor measures the depth of all dents or scratches on the DC power supply casing. These are sorted from largest to smallest to determine the maximum depth. The distance between the maximum depth and the casing's inner wall is used to determine whether the casing's protective performance meets the requirements. Specifically, the casing thickness is measured, the maximum depth is subtracted from the casing thickness to obtain the remaining thickness, and this remaining thickness is compared with half the casing thickness. Different responses are then determined based on the comparison results. If the remaining thickness is greater than half the casing thickness, the maximum dent or scratch depth is less than half the casing thickness, indicating that the casing still provides adequate protection for the DC power supply. In this case, the casing's protective performance meets the requirements. If the remaining thickness is less than or equal to half the casing thickness, the maximum dent or scratch depth has reached or exceeded half the casing thickness, significantly reducing the casing's protection against the DC power supply. In this case, the casing's protective performance does not meet the requirements. This is because when the remaining thickness is less than or equal to half the casing thickness, it indicates severe structural damage to the casing. The dents or scratches have eroded more than half the material thickness, significantly reducing the casing's mechanical strength and protective capabilities. As the DC power supply's first line of physical defense, the casing bears the crucial responsibility of protecting against external impact, extrusion, deformation, and environmental factors. When the casing thickness is significantly reduced due to dents or scratches, the remaining material cannot effectively distribute and withstand external forces, resulting in concentrated forces and a high risk of fracture, perforation, or further damage. Furthermore, this reduction in thickness weakens the casing's insulation and shielding properties, increasing the risk of internal components being exposed to external electromagnetic interference or moisture, impacting the device's stability and lifespan. Therefore, when the remaining thickness is less than half the casing thickness, protective performance is drastically reduced, making safe operation of the power supply impossible and presenting a significant risk of failure and accident. For example, assume the measured depths of all dents or scratches are 1.2mm, 0.8mm, and 0.5mm, and the casing is 3mm thick. The remaining thickness is equal to the shell thickness of 3 mm minus the maximum depth of 1.2 mm, which equals 1.8 mm. The remaining thickness of 1.8 mm is greater than half the shell thickness of 1.5 mm, indicating that the depth of the dent or scratch is less than half the shell thickness, and the shell can still provide adequate protection for the DC power supply.

[0023] Additionally, when the remaining thickness is greater than half the shell thickness, a threshold of approximately half the shell thickness is set, slightly less than half the shell thickness. All dent or scratch depths are compared to the threshold, and different responses are determined based on the comparison results. If the dent or scratch depth is greater than or equal to the threshold, it is marked as a near-miss defect. If the dent or scratch depth is less than the threshold, it is marked as a non-near-miss defect. To determine the number of near-miss defects, first determine whether the theoretical number of near-miss defects exists on half the shell surface. Since the shell has six surfaces, determine whether the number of near-miss defects is greater than three. If the number of near-miss defects is greater than or equal to three, determine the distribution of these near-miss defects and implement different responses based on their distribution. If the number of near-miss defects is less than three, the protective performance of the shell meets the requirements. To determine the distribution of near-miss defects, determine the total number of near-miss defects on the six shell surfaces, which is recorded as the number of near-miss defect surfaces. If the number of near-miss defect surfaces is greater than or equal to three, this means that while there are no significant defects, at least half of the six shell surfaces have near-miss defects. In this case, the protective performance of the shell does not meet the requirements. If the number of surfaces with near-defects is less than three, it means that the number of surfaces with near-defects on the six surfaces of the shell is relatively small. In this case, the shell's protective performance meets the requirements. For example, assuming the shell thickness is 3mm, the threshold for half the shell thickness is set to 1.4mm (slightly less than 1.5mm, which is half of 3mm). The measured dents or scratch depths are 1.5mm, 1.42mm, 1.39mm, 1.2mm, and 0.9mm, respectively. According to the proximity threshold, the depths of 1.5mm and 1.42mm are greater than or equal to 1.4mm and are marked as near-defects. Although 1.39mm is slightly less than 1.4mm, it is close to the threshold and is considered a non-near-defect. 1.2mm and 0.9mm are both non-near-defects. At this time, the number of near-defects is 2. Since the number of near-defects is less than 3, the shell's protective performance is judged to meet the requirements. Assume the number of proximity defects increases to four, and these defects are located on the top, bottom, left, and right sides of the housing. That means proximity defects appear on four different surfaces, bringing the total number of surfaces with proximity defects to four, exceeding half of the three surfaces. In this case, even if no dents meet the severe damage standard, the housing's overall protective performance is still degraded due to the presence of deep proximity defects on multiple surfaces, failing to meet the requirements and requiring maintenance or replacement.

[0024] When the theoretical number of proximity defects does not meet the requirement of being present on half the surface of the shell, that is, when the number of proximity defects is less than three, there are two possible scenarios: two or one. When there is one proximity defect, the proximity defect is confined to one surface and therefore has no significant impact. When there are two proximity defects, the two proximity defects may be located on both surfaces of the shell or on one surface. If two proximity defects are located on one surface of the shell and are very close to each other, there is a high probability that they will evolve into a single significant defect. Because dents or scratches act as stress concentration points on the shell surface, they form local stress fields around them. When two proximity defects are close together, the stress fields around them superimpose on each other, significantly enhancing the stress concentration effect in that area. This stress superposition can easily promote crack initiation and propagation in the material. The edges of the defects may connect or merge, ultimately causing a sudden drop in local material strength, forming larger cracks or damaged areas, which become obvious significant defects. Furthermore, two defects in close proximity are more likely to cause intersecting cracks under the influence of external forces or environmental changes (such as temperature and vibration), weakening the structural integrity, reducing the protective performance and mechanical strength of the casing, and thus threatening the safety of internal components. Therefore, when there are two proximity defects, the distribution locations of the two proximity defects are obtained, and different responses are taken based on their different distribution locations. If the two proximity defects are located on different sides of the casing, the casing's protective performance meets the requirements. If the two proximity defects are located on a single side of the casing, the closest distance between the two proximity defects is obtained. At the same time, a closest distance threshold is set based on experience. The closest distance is compared with the closest distance threshold, and different responses are determined based on the comparison results. If the closest distance is greater than the closest distance threshold, the distance between the two proximity defects is relatively far, and in this case, the casing's protective performance meets the requirements. If the closest distance is less than or equal to the closest distance threshold, the distance between the two proximity defects is relatively close, and in this case, the casing's protective performance does not meet the requirements. For example, assuming the casing thickness is 3mm and the proximity threshold for half the casing thickness is set to 1.4mm, the depths of the two proximity defects are 1.45mm and 1.42mm, respectively, both exceeding the threshold and being marked as proximity defects. If the two defects are located on the top and side of the housing, respectively, they are distributed on different surfaces, and the overall protective performance meets the requirements, requiring no special treatment. However, if both defects are concentrated on the same side, further measurement of the closest distance between them is 5mm, and the set minimum distance threshold is 10mm. Because 5mm is smaller than 10mm, the two defects are relatively close, and the local stress concentration effect is significantly enhanced, which can easily cause the cracks to connect and expand, resulting in a sudden drop in local material strength, forming a significant defect, reducing the mechanical strength and protective performance of the housing, and posing a safety hazard. In this case, the housing should be judged to be non-compliant with the protective performance requirements and require repair or replacement to prevent further damage and failure.If the distance between the two defects is 15mm, which is significantly larger than the 10mm threshold, the distance between the close defects is relatively far, the stress is relatively dispersed, and it is not easy to merge, and the protective performance of the shell is still judged to be qualified.

[0025] In the embodiments disclosed herein, the processes described above with reference to the flowcharts can be implemented as computer software programs. The embodiments disclosed herein include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for executing the method illustrated in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via a communication component and / or installed from removable media. When the computer program is executed by a central processing unit, the functions defined in the methods of this application are performed. It should be noted that the computer-readable medium referred to herein can be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. Computer-readable storage media can be, for example, but not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or components, or any combination thereof. More specific examples of computer-readable storage media can include, but are not limited to, an electrical connection having one or more wire segments, a portable computer disk, a hard disk, random access memory, read-only memory, erasable programmable read-only memory, optical fiber, a portable compact disk read-only memory, an optical storage device, a magnetic storage device, or any suitable combination thereof. In this application, a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. Furthermore, in this application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries computer-readable program code. This propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transfer a program for use by or in conjunction with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, electrical, optical, RF, or any suitable combination thereof.

[0026] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of the systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each box in the flowchart or block diagram can represent a module, program segment, or portion of code that contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions marked in the boxes can also occur in an order different from that marked in the accompanying drawings. For example, two boxes shown in succession can actually be executed substantially in parallel, or they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, as well as combinations of boxes in the block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified functions or operations, or can be implemented using a combination of dedicated hardware and computer instructions.

[0027] Those skilled in the art should understand that the above is only a specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with this technical field can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered by the scope of protection of the present application.

Claims

1. A DC power supply aging test system, characterized in that: include: An insulation resistance acquisition module is used to obtain the insulation resistance values of the input and output terminals, the input and housing, and the output and housing of the DC power supply through a megohmmeter, and to set the insulation resistance value threshold according to industry specifications; An insulation resistance comparison module is used to compare the insulation resistance values of the input and output terminals, the input and housing, and the output and housing with the insulation resistance threshold values. When the insulation resistance values of the input and output terminals are greater than or equal to the insulation resistance threshold values, the insulation performance of the input and output terminals meets the requirements. When the insulation resistance value between the input terminal and the shell is greater than or equal to the insulation resistance value threshold, the insulation performance of the input terminal and the shell meets the requirements; when the insulation resistance value between the output terminal and the shell is greater than or equal to the insulation resistance value threshold, the insulation performance of the output terminal and the shell meets the requirements. When the insulation performance of all three meets the requirements, the insulation performance of the DC power supply meets the requirements; The withstand voltage test module is used to apply a DC voltage several times higher than the operating voltage to the input and output terminals, the input and housing, and the output and housing during the test cycle. If all three pairs of insulation parts are normal, the withstand voltage performance of the DC power supply meets the requirements; if any of the three pairs of insulation parts has an abnormality, the withstand voltage performance of the DC power supply does not meet the requirements; The depth test module is used to obtain the depth of the dents on the shell of the DC power supply, take the maximum value as the maximum depth, and use the distance between the maximum depth and the inner wall of the shell to judge whether the protection performance of the shell meets the requirements.

2. The DC power supply aging test system according to claim 1, characterized in that: The specific method of using the distance between the maximum depth and the inner wall of the shell to judge whether the protective performance of the shell meets the requirements is: obtain the shell thickness, subtract the maximum depth from the shell thickness to obtain the remaining thickness, compare the remaining thickness with half of the shell thickness, and come up with different responses based on the comparison results.

3. The DC power supply aging test system according to claim 2, characterized in that: If the remaining thickness is greater than half the thickness of the shell, it means that the maximum depth of the dent is less than half the thickness of the shell, and the shell provides sufficient protection against the DC power supply. In this case, the protection performance of the shell meets the requirements; if the remaining thickness is less than or equal to half the thickness of the shell, it means that the maximum depth of the dent has reached or exceeded half the thickness of the shell, and the protection of the shell against the DC power supply is reduced. In this case, the protection performance of the shell does not meet the requirements.

4. The DC power supply aging test system according to claim 3, characterized in that: A shell half-thickness proximity threshold of less than half the shell thickness is preset. When the remaining thickness is greater than half the shell thickness, the dent depth is compared with the shell half-thickness proximity threshold. If the dent depth is greater than or equal to the shell half-thickness proximity threshold, it is marked as a proximity defect; if the dent depth is less than the shell half-thickness proximity threshold, it is marked as a non-proximity defect; the number of proximity defects is obtained. If the number of proximity defects is greater than or equal to the number of half the shell surfaces, the number of proximity defects on the six shell surfaces is obtained, and it is recorded as the number of proximity defect surfaces. Different responses are taken according to the number of defect surfaces. If the number of proximity defects is less than the number of half the shell surfaces, the protective performance of the shell meets the requirements.

5. The DC power supply aging test system according to claim 4, characterized in that: If the number of surfaces approaching defects is greater than or equal to half of the shell, it means that at least half of the six surfaces of the shell have defects. In this case, the protective performance of the shell does not meet the requirements; if the number of surfaces approaching defects is less than half of the shell, it means that the number of surfaces approaching defects on the six surfaces of the shell is small. In this case, the protective performance of the shell meets the requirements.

6. The DC power supply aging test system according to claim 5, characterized in that: When the number of close defects is less than half the number of faces of the shell, the number of close defects is one or two. When there are two defects, the distribution positions of the two close defects are obtained, and different responses are taken according to the difference in the distribution positions of the two.

7. The DC power supply aging test system according to claim 6, characterized in that: If the two proximity defects are distributed on different surfaces of the shell, the protective performance of the shell meets the requirements; if the two proximity defects are distributed on one surface of the shell, obtain the closest distance between the two proximity defects. At the same time, set the closest distance threshold based on experience, compare the closest distance with the closest distance threshold, and come up with different responses based on the comparison results.

8. The DC power supply aging test system according to claim 7, characterized in that: If the closest distance is greater than the closest distance threshold, it means that the distance between the two approaching defects is far. In this case, the protective performance of the shell meets the requirements; if the closest distance is less than or equal to the closest distance threshold, it means that the distance between the two approaching defects is close. In this case, the protective performance of the shell does not meet the requirements.

9. A DC power supply aging test method, used to implement the system according to any one of claims 1 to 8, characterized in that: include: Step 1: Obtain insulation resistance values of the input and output terminals, the input and housing, and the output and housing of the DC power supply, and set insulation resistance thresholds according to industry standards; Step 2: Compare the insulation resistance values of the input terminal and the output terminal, the input terminal and the housing, and the output terminal and the housing with the insulation resistance value threshold value respectively. When the insulation resistance values of the input terminal and the output terminal are greater than or equal to the insulation resistance value threshold value, the insulation performance of the input terminal and the output terminal meets the requirements; When the insulation resistance value between the input terminal and the shell is greater than or equal to the insulation resistance value threshold, the insulation performance of the input terminal and the shell meets the requirements; when the insulation resistance value between the output terminal and the shell is greater than or equal to the insulation resistance value threshold, the insulation performance of the output terminal and the shell meets the requirements. When the insulation performance of all three meets the requirements, the insulation performance of the DC power supply meets the requirements; Step 3: During the test cycle, apply a DC voltage several times higher than the operating voltage to the input and output terminals, the input and housing, and the output and housing. If all three pairs of insulation parts are normal, the DC power supply's withstand voltage performance meets the requirements. If any of the three pairs of insulation parts has an abnormality, the DC power supply's withstand voltage performance does not meet the requirements. Step 4: Obtain the depths of the indentations on the housing of the DC power supply, take the maximum value as the maximum depth, and use the distance between the maximum depth and the inner wall of the housing to determine whether the protective performance of the housing meets the requirements.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement the DC power supply aging test system according to any one of claims 1 to 8.

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