Capacitance automatic accelerated degradation experiment system, method, device, equipment and medium

Abstract

The invention provides an automatic accelerated degradation experiment system, method, device, equipment and medium for a capacitor, and the method comprises the steps: taking an aluminum electrolytic capacitor as a tested object, taking an upper computer as a control core, and carrying out the acceleration of an aluminum capacitor acceleration test mainly through environment stress and electric stress; dC voltage superposed AC ripple current composite electric stress is applied to a tested sample through an AC-DC superposed experimental power supply, temperature and humidity environment stress is applied by controlling an environment test box, and the temperature state of a tested capacitor can be monitored; the capacitance value, loss / DF, equivalent series resistance / ESR and leakage current / LC parameters of the aluminum capacitor are collected and recorded in a test interruption interval. The beneficial effect of the invention is that the accelerated degradation test efficiency and test accuracy of the aluminum electrolytic capacitor are improved.

Description

Technical Field

[0001] This invention relates to the field of capacitance testing technology, and in particular to an automated accelerated degradation test system, method, apparatus, equipment, and medium for capacitors. Background Technology

[0002] Aluminum electrolytic capacitors, with their advantages of large capacity and small size, can perform functions such as energy storage and filtering, and are therefore widely used in consumer electronics, photovoltaics, wind power, and the automotive industry. The reliability of aluminum electrolytic capacitors directly affects the stability and safety of the entire power electronic system; therefore, a comprehensive test and evaluation of their reliability and lifespan is essential before selection. To improve the efficiency of reliability assessment for aluminum electrolytic capacitors, accelerated degradation tests under combined environmental and electrical stress conditions are necessary to accelerate the degradation process and quickly obtain the degradation trajectory throughout the entire lifespan of the capacitor. Typically, this involves personnel using various testing equipment, test power supplies, and environmental chambers in stages to switch test channels, manually record and summarize test data, which suffers from numerous test operations, heavy reliance on the skill level of the personnel, and low data processing efficiency. Summary of the Invention

[0003] The main objective of this invention is to provide an automated accelerated degradation test system, method, apparatus, equipment, and dielectric for capacitors, thereby improving the efficiency and accuracy of accelerated degradation testing for aluminum electrolytic capacitors.

[0004] One aspect of the present invention provides an automated accelerated degradation experimental system for capacitors, comprising:

[0005] The system includes a host computer, an environmental test chamber, an external power supply, a temperature recording unit, a leakage current recording unit, a static parameter testing unit, a channel conversion function unit, and an AC / DC superimposed experimental power supply.

[0006] The environmental test chamber is equipped with multiple aluminum electrolytic capacitor samples;

[0007] The host computer and the external power supply are used to send control signals and supply power to the environmental test chamber, the temperature recording unit, the leakage current recording unit, the static parameter testing unit, the channel conversion function unit, and the AC / DC superimposed experimental power supply, respectively.

[0008] The environmental test chamber, the temperature recording unit, the leakage current recording unit, the static parameter testing unit, the channel conversion function unit, and the AC / DC superimposed experimental power supply respectively perform environmental stress configuration, temperature data acquisition, leakage current parameter testing, key performance parameter testing, sample access and control, and AC / DC composite electric stress loading and monitoring on the aluminum electrolytic capacitor sample according to the control signal.

[0009] The host computer is used to acquire test data returned by the environmental test chamber, the temperature recording unit, the leakage current recording unit, the static parameter testing unit, the channel conversion function unit, and the AC / DC superimposed experimental power supply, and to generate a test report for the aluminum electrolytic capacitor sample based on the test data.

[0010] According to the aforementioned automated accelerated degradation experimental system for capacitors, the channel switching function unit is used to connect, disconnect, and monitor the status of aluminum electrolytic capacitor samples corresponding to the temperature recording unit, the leakage current recording unit, and the static parameter testing unit.

[0011] According to the aforementioned automated accelerated degradation experimental system for capacitors, the channel switching function unit is connected to the test fixture disposed in the environmental test chamber, wherein the channel switching function unit adopts a relay group or a mechanical action structure, and the test fixture is used to place aluminum electrolytic capacitor samples.

[0012] According to the aforementioned automated accelerated degradation experimental system for capacitors, the host computer further includes:

[0013] This is used to control the AC / DC superimposed experimental power supply to automatically apply AC / DC composite electrical stress to aluminum electrolytic capacitor samples, monitor their status, and provide over / under voltage and over / under current protection.

[0014] It is used to control the controlled environment test chamber via control signals to achieve automatic loading of environmental stress, monitoring of test temperature and humidity, and high / low temperature protection;

[0015] Used to control the access control and status monitoring of aluminum electrolytic capacitor samples by controlling the channel switching function unit through control signals;

[0016] This is used to control the static parameter testing unit to test key performance parameters via control signals, wherein the key performance parameters include capacitance value, loss and equivalent series resistance;

[0017] Used to control the leakage current test unit to test and record the leakage current parameters of the aluminum electrolytic capacitor sample via control signals;

[0018] It is used to control the control temperature recorder to acquire temperature data of aluminum electrolytic capacitor samples through control signals, and to protect aluminum electrolytic capacitor samples from over-temperature through temperature regulation.

[0019] It is used to control the environmental test chamber, the temperature recording unit, the leakage current recording unit, the static parameter testing unit, the channel conversion function unit, and the AC / DC superimposed experimental power supply through control signals to complete the linkage control;

[0020] The collected test data is calibrated, and the calibrated test data is used to generate test reports in a preset format.

[0021] Embodiments of the present invention also disclose an automated accelerated degradation experimental method for capacitors, comprising:

[0022] The experimental test parameters are obtained, and the test equipment is set up in sequence according to the experimental test parameters. The test equipment includes an environmental test chamber and an external power supply, a temperature recording unit, a leakage current recording unit, a static parameter test unit, a channel conversion function unit, and an AC / DC superimposed experimental power supply.

[0023] Acquire monitoring data of aluminum electrolytic capacitor samples, issue control signals for safety testing based on the monitoring data and preset test safety values ​​of aluminum electrolytic capacitor samples, and determine the equipment for testing based on the monitoring data;

[0024] The status of the aluminum electrolytic capacitor samples and the equipment is calibrated and then displayed through an interactive interface, with alarms issued for aluminum electrolytic capacitor samples and equipment with abnormal status.

[0025] The automated accelerated degradation test method for capacitors, wherein obtaining experimental test parameters and setting the test equipment sequentially according to the experimental test parameters, further includes:

[0026] The test equipment performs a self-test and reports the results. The self-test of the test equipment includes the environmental signal of the environmental test chamber, the channel status of the channel conversion function unit, the power protection function of the AC / DC superimposed experimental power supply, and the temperature protection function of the temperature recording unit.

[0027] The testing equipment is automatically adjusted based on the self-test results.

[0028] According to the aforementioned automated accelerated degradation experimental method for capacitors, the method further includes:

[0029] Environmental test chamber and external power supply, temperature recording unit, leakage current recording unit, static parameter testing unit, channel conversion function unit and AC / DC superimposed experimental power supply.

[0030] The linkage control is performed by the control signal, which includes performing an AC / DC superimposed experimental power supply on the aluminum electrolytic capacitor sample for AC / DC superimposed durability test, stopping the output and discharging, and recording whether the discharge is abnormal.

[0031] The LCR tester of the static parameter test unit is connected to the test circuit through the channel conversion function unit, and the LCR tester is recorded as abnormal.

[0032] The aluminum electrolytic capacitor sample is connected to the test circuit through the channel conversion function unit, and the capacitance, loss and equivalent series resistance (ESR) parameters of the aluminum electrolytic capacitor sample are recorded in sequence, and whether the capacitance parameters are abnormal is also recorded.

[0033] The leakage current recording unit is connected to the test circuit through the channel conversion function unit, and the leakage current recording unit is recorded as abnormal. The aluminum electrolytic capacitor sample is connected to the test circuit again through the channel conversion function unit, and the leakage current parameters of the aluminum electrolytic capacitor sample are recorded, and the capacitance state of the aluminum electrolytic capacitor sample is recorded as abnormal.

[0034] Abnormal data on equipment status and test data of aluminum electrolytic capacitor samples are displayed through an interactive interface.

[0035] Another aspect of the present invention provides an automated accelerated degradation experimental apparatus for capacitors, comprising:

[0036] The first module is used to acquire experimental test parameters and set the test equipment in sequence according to the experimental test parameters. The test equipment includes an environmental test chamber and an external power supply, a temperature recording unit, a leakage current recording unit, a static parameter test unit, a channel conversion function unit, and an AC / DC superimposed experimental power supply.

[0037] The second module is used to acquire monitoring data of aluminum electrolytic capacitor samples, issue control signals for safety testing based on the monitoring data and preset test safety values ​​of aluminum electrolytic capacitor samples, and determine the equipment for testing based on the monitoring data.

[0038] The third module is used to display the status of aluminum electrolytic capacitor samples and equipment through an interactive interface, and to issue alarms for aluminum electrolytic capacitor samples and equipment with abnormal status.

[0039] Another aspect of the present invention provides an electronic device, including a processor and a memory;

[0040] The memory is used to store programs;

[0041] The processor executes the program to implement the method as described above.

[0042] This invention also discloses a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device can read the computer instructions from the computer-readable storage medium and execute the computer instructions, causing the computer device to perform the methods described above.

[0043] The beneficial effects of this invention are as follows: It integrates a control test environment box, parameter testing unit, channel switching function unit, and power supply to automate the execution of accelerated testing conditions and the switching of test channels for aluminum electrolytic capacitors, thereby automating the accelerated testing of aluminum electrolytic capacitors and significantly improving testing efficiency. Through integrated control of each testing unit via host computer software, it achieves automated control of the test program, automatic collection of test results, and report output, reducing manual operation and improving data processing efficiency. Furthermore, by automating the accelerated degradation test of aluminum electrolytic capacitors and completing automated testing of capacitance, loss, equivalent series resistance, and leakage current, it improves testing efficiency and enables rapid testing and analysis of the reliability of aluminum electrolytic capacitors throughout their entire lifecycle. Attached Figure Description

[0044] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0045] Figure 1 This is a schematic diagram of an automated accelerated degradation experimental system for capacitors according to an embodiment of the present invention.

[0046] Figure 2 This is a schematic diagram of the channel conversion tooling circuit according to an embodiment of the present invention.

[0047] Figure 3 This is a schematic diagram of the channel conversion unit circuit in an embodiment of the present invention.

[0048] Figure 4 This is a schematic diagram of the experimental method for automated accelerated degradation of capacitors according to an embodiment of the present invention.

[0049] Figure 5 This is a flowchart illustrating the automated accelerated testing logic of aluminum electrolytic capacitors according to an embodiment of the present invention.

[0050] Figure 6 This is a schematic diagram of the automated accelerated testing process for aluminum electrolytic capacitors according to an embodiment of the present invention.

[0051] Figure 7 This is a schematic diagram comparing the capacitance values ​​of different samples in a test according to an embodiment of the present invention.

[0052] Figure 8 This is a schematic diagram of temperature changes for different test samples in an embodiment of the present invention.

[0053] Figure 9 This is a schematic diagram of the experimental apparatus for automated accelerated degradation of capacitors according to an embodiment of the present invention. Detailed Implementation

[0054] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. Throughout the description, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. In the following description, suffixes such as "module," "part," or "unit" used to denote elements are used only for the purpose of illustrative purposes and have no specific meaning in themselves. Therefore, "module," "part," or "unit" can be used interchangeably. Terms such as "first," "second," etc., are used only to distinguish technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features. In the following description, the consecutive reference numerals for method steps are for ease of review and understanding. Adjusting the implementation order of steps, in conjunction with the overall technical solution of the present invention and the logical relationship between the various steps, will not affect the technical effect achieved by the technical solution of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0055] refer to Figure 1 , Figure 1 This is a schematic diagram of an automated accelerated degradation experimental system for capacitors according to an embodiment of the present invention. It includes a host computer, an environmental test chamber, an external power supply, a temperature recording unit, a leakage current recording unit, a static parameter testing unit, a channel conversion function unit, and an AC / DC superimposed experimental power supply.

[0056] The environmental test chamber contains multiple aluminum electrolytic capacitor samples. The host computer and external power supply send control signals and provide power to the environmental test chamber, temperature recording unit, leakage current recording unit, static parameter testing unit, channel conversion unit, and AC / DC superimposed experimental power supply, respectively. Based on the control signals, the environmental test chamber, temperature recording unit, leakage current recording unit, static parameter testing unit, channel conversion unit, and AC / DC superimposed experimental power supply perform environmental stress configuration, temperature data acquisition, leakage current parameter testing, key performance parameter testing, sample connection and control, and AC / DC composite electrical stress loading and monitoring on the aluminum electrolytic capacitor samples. The host computer acquires the test data returned by the environmental test chamber, temperature recording unit, leakage current recording unit, static parameter testing unit, channel conversion unit, and AC / DC superimposed experimental power supply, and generates a test report for the aluminum electrolytic capacitor samples based on the test data.

[0057] like Figure 1 As shown, green lines represent data and control signal transmission, red lines represent power supply relationships, and black lines represent the transmission of electrical, temperature, and other signals.

[0058] (1) The AC / DC superimposed durability test power supply is controlled by the host computer to realize the automatic loading, status monitoring and over / under voltage and over / under current protection of the AC / DC composite electric stress on the test sample;

[0059] (2) The environmental test chamber is controlled by the host computer to realize the automatic loading of environmental stress, monitoring of test temperature and humidity, and high / low temperature protection;

[0060] (3) The access control and status monitoring of aluminum electrolytic capacitor samples are realized through the upper computer control channel conversion function unit. The channel conversion unit can be a relay group or a mechanical action structure to realize the access and removal control of the test sample.

[0061] (4) The key performance parameters are tested by controlling the static parameter test unit through the host computer: capacitance value / C, loss / DF, and equivalent series resistance / ESR.

[0062] (5) The leakage current parameters of aluminum electrolytic capacitors are tested and recorded by controlling the leakage current test unit through the host computer;

[0063] (6) The temperature recorder is controlled by the host computer to return the sample temperature data and to realize sample over-temperature protection;

[0064] (7) The above-mentioned test power supply, environmental test chamber, channel conversion function unit, static parameter test unit, leakage current test unit and temperature recorder are linked and controlled by the host computer software.

[0065] (8) The test data is calibrated using the host computer software;

[0066] (9) Export the calibrated test data as a report in a preset format using the host computer software.

[0067] In some embodiments, the automated accelerated degradation test system for capacitors of this invention uses aluminum electrolytic capacitors as the test object and a host computer as the control core. The accelerated test of aluminum capacitors is mainly accelerated by environmental stress and electrical stress. This test system can apply a DC voltage superimposed with an AC ripple current composite electrical stress to the test sample, and apply environmental stress by controlling the temperature and humidity of the environmental test chamber. At the same time, it can monitor the temperature status of the test capacitor. It can collect and record the capacitance value, loss / DF, equivalent series resistance / ESR, and leakage current / LC parameters of the aluminum capacitor during the test interruption interval.

[0068] In some embodiments, a schematic diagram of a channel conversion tooling circuit is provided for reference. Figure 2 It is used to connect, disconnect, and monitor the status of aluminum electrolytic capacitor samples corresponding to the temperature recording unit, leakage current recording unit, and static parameter testing unit.

[0069] In some embodiments, the channel switching function unit is connected to a test fixture disposed in an environmental test chamber, wherein the channel switching function unit adopts a relay group or a mechanical action structure, and the test fixture is used to place aluminum electrolytic capacitor samples, exemplarily referring to... Figure 3 The schematic diagram of the channel conversion unit circuit shown is provided. It should be noted that... Figure 3 The neutral and negative terminals are installed on the common busbar in the test fixture. All high-voltage circuits are connected with extra-soft silicone wire. The high-voltage relay and capacitor test leads are 15AWG (1.5 square millimeters), the AC / DC power supply is 7AWG (12 square millimeters), and other instruments are 18AWG (0.75 square millimeters).

[0070] refer to Figure 4 , Figure 4 This is a schematic flowchart of the automated accelerated degradation experimental method for capacitors according to an embodiment of the present invention. It includes, but is not limited to, steps S100 to S300:

[0071] S100: Obtain experimental test parameters and set the test equipment according to the experimental test parameters. The test equipment includes an environmental test chamber and an external power supply, a temperature recording unit, a leakage current recording unit, a static parameter test unit, a channel conversion function unit, and an AC / DC superimposed experimental power supply.

[0072] S200 acquires monitoring data of aluminum electrolytic capacitor samples, issues control signals for safety testing based on the monitoring data and preset test safety values ​​of the aluminum electrolytic capacitor samples, and determines the testing equipment based on the monitoring data.

[0073] The S300 calibrates the status of aluminum electrolytic capacitor samples and equipment, displays it through an interactive interface, and issues alarms for aluminum electrolytic capacitor samples and equipment with abnormal status.

[0074] In some embodiments, a self-test is performed by the testing equipment, and the self-test results are reported. The self-test of the testing equipment includes the environmental signal of the environmental test chamber, the channel status of the channel conversion function unit, the power protection function of the AC / DC superimposed experimental power supply, and the temperature protection function of the temperature recording unit. The testing equipment is automatically adjusted according to the self-test results.

[0075] For example, refer to Figure 5 The flowchart illustrates the automated accelerated testing logic for aluminum electrolytic capacitors. It involves setting test parameters, which are edited via a host computer software interface or imported and called through scripts. Then, based on the set parameters, the system sequentially controls the operation of equipment such as the environmental test chamber, channel conversion unit, AC / DC superposition durability test power supply, static parameter testing unit, and leakage current testing unit, while also controlling the process status and automatically acquiring parameters in real time. The parameter testing process requires the cooperation of the testing equipment and the channel conversion unit.

[0076] For example, the overall operation logic flow of an accelerated test for aluminum electrolytic capacitors is as follows:

[0077] (1) Before the test, the aluminum electrolytic capacitor sample to be tested is mounted on the test fixture and placed in the environmental test chamber. The test sample is connected to the corresponding interface of the channel conversion function unit through the lead wire.

[0078] (2) Turn on the power supply. Each unit will perform a self-test to ensure normal function. The operator opens the host computer software interface. The software system determines the connection status by communicating with each device. If the connection is normal, it will be displayed with a green light; if it is abnormal, it will be displayed with a red light.

[0079] (3) After communication is normal, the host computer software interface displays the control interface of the AC / DC superimposed test power supply, environmental test chamber, static parameter test unit, leakage current test unit and channel conversion function unit.

[0080] (4) The operator manually inputs various test parameters through the open interface of the host computer software. The software interface automatically generates and displays the test stress profile. When the operator controls the host computer to issue the test start command, the host computer software pops up a window to remind the inspector to confirm the test parameters. The system function self-check needs to be performed when the test starts.

[0081] (5) After the test begins, the host computer controls the AC / DC superposition test power supply, environmental test chamber, static parameter test unit, leakage current test unit and channel conversion function unit to operate, automatically collect process status and parameters, and display them in real time on the software interface. The data sampling rate can be manually set by the host computer. The temperature data sampling rate is 1 time / second by default, and the sampling rate of other electrical parameters is 1k / second by default.

[0082] (6) There are two conditions for stopping the test: the set test duration is reached or the monitoring index reaches the upper limit. If either monitoring index reaches the alarm value, the host computer will pause the test and issue an alarm. The operator needs to check and manually click "Continue to run" or "Stop running" to continue or terminate the test.

[0083] In some embodiments, reference Figure 6A schematic diagram of the automated accelerated testing process for aluminum electrolytic capacitors. It includes: an environmental test chamber and external power supply, a temperature recording unit, a leakage current recording unit, a static parameter testing unit, a channel conversion function unit, and an AC / DC superimposed experimental power supply; it performs linkage control via control signals, sequentially including: after performing an AC / DC superimposed durability test on an aluminum electrolytic capacitor sample using the AC / DC superimposed experimental power supply, stopping the output and discharging, recording whether the discharge is abnormal; connecting the LCR tester of the static parameter testing unit to the test circuit via the channel conversion function unit, recording whether the LCR tester is abnormal; connecting the aluminum electrolytic capacitor sample to the test circuit via the channel conversion function unit, and sequentially recording the capacitance, loss, and equivalent series resistance (ESR) parameters of the aluminum electrolytic capacitor sample, and recording whether the capacitance parameters are abnormal; connecting the leakage current recording unit to the test circuit via the channel conversion function unit, and recording whether the leakage current recording unit is abnormal; connecting the aluminum electrolytic capacitor sample back to the test circuit via the channel conversion function unit, recording the leakage current parameters of the aluminum electrolytic capacitor sample, and recording whether the capacitance state of the aluminum electrolytic capacitor sample is abnormal; displaying abnormal data of the equipment status and test data of the aluminum electrolytic capacitor sample through an interactive interface.

[0084] For example, the linkage control process for automated acceleration of aluminum electrolytic capacitors is convoluted:

[0085] (1) Install the aluminum electrolytic capacitor samples A1, A2, ..., A10 on the fixture at the corresponding numbered positions, connect them to the corresponding interface of the channel conversion function unit through the lead wire, and place them in the environmental test chamber.

[0086] (2) Turn on the power supply. Open the host computer software interface and check the connection status indicator lights of each device. A green light indicates a normal connection, while a red light indicates an abnormal connection. If all lights are green, continue to the next step; if a red light appears, troubleshoot the connection fault of the corresponding device.

[0087] (3) Check the control interface of the AC / DC superimposed test power supply, environmental test chamber, static parameter test unit, leakage current test unit and channel conversion function unit displayed on the host computer software interface.

[0088] (4) Manually input test parameters through the open interface of the host computer software: turn on the constant temperature mode of the environmental test chamber, set the test temperature to 70℃, and the test temperature to 25-30℃; set the DC voltage of the AC / DC superposition test power supply to 450V and the ripple current to 3.75A; set the recording point interval of the temperature recording unit to 5 seconds and the over-temperature protection value to 100℃; set the test voltage of the leakage current test unit to 410V, set the upper limit of the test current to 20mA and the lower limit to 0mA, select the automatic range for the measurement range, set the charging test time to 300 seconds, and set the charging current to 0.5A; set the test frequency of the static parameter test unit to 120Hz and the test voltage to 1V. Refer to Table 1, the parameter setting table, for the test results.

[0089] Table 1 Experimental Parameter Settings

[0090]

[0091]

[0092] (5) The software interface displays the test stress profile and the real-time monitoring status of each test device. Click the "Start Test" button on the host computer software, and then click the "Confirm" button in the pop-up window. After the test starts, the host computer controls the AC / DC superposition test power supply, environmental test chamber, static parameter test unit, leakage current test unit, and channel conversion function unit to automatically collect process status and parameters, and displays them in real time on the software interface. See the following for details. Figure 7 The diagram shows a comparison of the capacitance values ​​of different samples.

[0093] (6) After 200 hours, confirm that the sample has returned to room temperature using a temperature recorder. Click the automatic test button for the leakage current test unit and static parameter test unit in the host computer software interface. After the software interface displays that the test is complete, the host computer will automatically save and output a report, such as the change report in Table 2. For a detailed comparison diagram, please refer to the table. Figure 8 The diagram shows the temperature changes of different test samples.

[0094] Table 2. Temperature, voltage, and current changes of aluminum electrolytic capacitor sample A1

[0095]

[0096]

[0097] Figure 9 This is a diagram of an automated accelerated degradation experimental analysis device for capacitors according to an embodiment of the present invention. The device includes a first module 910, a second module 920, and a third module 930.

[0098] The system comprises three modules: The first module acquires experimental test parameters and sets the test equipment accordingly. The test equipment includes an environmental test chamber and external power supply, a temperature recording unit, a leakage current recording unit, a static parameter testing unit, a channel conversion function unit, and an AC / DC superimposed experimental power supply. The second module acquires monitoring data from the aluminum electrolytic capacitor samples, issues control signals for safety testing based on the monitoring data and preset safety values ​​for the samples, and determines the equipment to be tested based on the monitoring data. The third module displays the status of the aluminum electrolytic capacitor samples and the equipment through an interactive interface and issues alarms for samples and equipment exhibiting abnormal status.

[0099] For example, with the cooperation of the first, second, and third modules in the device, the embodiment device can implement any of the aforementioned automated accelerated degradation experimental methods for capacitors, namely, acquiring experimental test parameters, setting the test equipment sequentially according to the experimental test parameters, wherein the test equipment includes an environmental test chamber and an external power supply, a temperature recording unit, a leakage current recording unit, a static parameter testing unit, a channel conversion function unit, and an AC / DC superimposed experimental power supply; acquiring monitoring data of aluminum electrolytic capacitor samples, issuing control signals for safety testing based on the monitoring data and the preset test safety values ​​of the aluminum electrolytic capacitor samples, and determining the equipment of the test equipment based on the monitoring data; calibrating the status of the aluminum electrolytic capacitor samples and the equipment status and displaying them through an interactive interface, and issuing alarms for aluminum electrolytic capacitor samples and equipment with abnormal status. The beneficial effects of this invention are as follows: It integrates a control test environment box, parameter testing unit, channel switching function unit, and power supply to automate the execution of accelerated testing conditions and the switching of test channels for aluminum electrolytic capacitors, thereby automating the accelerated testing of aluminum electrolytic capacitors and significantly improving testing efficiency. Through integrated control of each testing unit via host computer software, it achieves automated control of the test program, automatic collection of test results, and report output, reducing manual operation and improving data processing efficiency. Furthermore, by automating the accelerated degradation test of aluminum electrolytic capacitors and completing automated testing of capacitance, loss, equivalent series resistance, and leakage current, it improves testing efficiency and enables rapid testing and analysis of the reliability of aluminum electrolytic capacitors throughout their entire lifecycle.

[0100] This invention also provides an electronic device, which includes a processor and a memory;

[0101] The memory stores the program;

[0102] The processor executes a program to perform the aforementioned method for automating accelerated degradation of capacitance experiments; the electronic device has the function of carrying and running the software system for automating accelerated degradation of capacitance experiments provided in the embodiments of the present invention, such as a personal computer, minicomputer, mainframe, workstation, network or distributed computing environment, standalone or integrated computer platform, or communicating with charged particle tools or other imaging devices, etc.

[0103] This invention also provides a computer-readable storage medium storing a program that is executed by a processor to implement the capacitor automated accelerated degradation experimental method described above.

[0104] In some alternative embodiments, the functions / operations mentioned in the block diagrams may not occur in the order shown in the operation diagrams. For example, depending on the functions / operations involved, two consecutively shown blocks may actually be executed substantially simultaneously, or the blocks may sometimes be executed in reverse order. Furthermore, the embodiments presented and described in the flowcharts of this invention are provided by way of example to provide a more comprehensive understanding of the technology. The disclosed methods are not limited to the operations and logic flows presented herein. Alternative embodiments are contemplated in which the order of various operations is altered and sub-operations described as part of a larger operation are executed independently.

[0105] This invention also discloses a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device can read the computer instructions from the computer-readable storage medium and execute the computer instructions, causing the computer device to perform the aforementioned method for automatically accelerating capacitor degradation experiments.

[0106] Furthermore, although the invention has been described in the context of functional modules, it should be understood that, unless otherwise stated, one or more of the described functions and / or features may be integrated into a single physical device and / or software module, or one or more functions and / or features may be implemented in a separate physical device or software module. It is also understood that a detailed discussion of the actual implementation of each module is unnecessary for understanding the invention. Rather, given the properties, functions, and internal relationships of the various functional modules in the apparatus disclosed herein, the actual implementation of the module will be understood within the scope of conventional skill of an engineer. Therefore, those skilled in the art can implement the invention as set forth in the claims using ordinary techniques without excessive experimentation. It is also understood that the specific concepts disclosed are merely illustrative and not intended to limit the scope of the invention, which is determined by the full scope of the appended claims and their equivalents.

[0107] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0108] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device.

[0109] More specific examples of computer-readable media (a non-exhaustive list) include: electrical connections (electronic devices) having one or more wires, portable computer disk drives (magnetic devices), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Furthermore, computer-readable media can even be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in computer memory.

[0110] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0111] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0112] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

[0113] The above is a detailed description of the preferred embodiments of the present invention, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. An automated accelerated degradation experimental system for capacitors, characterized in that, include: The system includes a host computer, an environmental test chamber, an external power supply, a temperature recording unit, a leakage current recording unit, a static parameter testing unit, a channel conversion function unit, and an AC / DC superimposed experimental power supply. The environmental test chamber is equipped with multiple aluminum electrolytic capacitor samples; The host computer and the external power supply are used to send control signals and supply power to the environmental test chamber, the temperature recording unit, the leakage current recording unit, the static parameter testing unit, the channel conversion function unit, and the AC / DC superimposed experimental power supply, respectively. The environmental test chamber, the temperature recording unit, the leakage current recording unit, the static parameter testing unit, the channel conversion function unit, and the AC / DC superimposed experimental power supply respectively perform environmental stress configuration, temperature data acquisition, leakage current parameter testing, key performance parameter testing, sample access and control, and AC / DC composite electric stress loading and monitoring on the aluminum electrolytic capacitor sample according to the control signal. The host computer is used to acquire test data returned by the environmental test chamber, the temperature recording unit, the leakage current recording unit, the static parameter testing unit, the channel conversion function unit, and the AC / DC superimposed experimental power supply, and to generate a test report for the aluminum electrolytic capacitor sample based on the test data.

2. The automated accelerated degradation experimental system for capacitors according to claim 1, characterized in that, The channel conversion function unit is used to connect, disconnect, and monitor the status of aluminum electrolytic capacitor samples corresponding to the temperature recording unit, the leakage current recording unit, and the static parameter testing unit.

3. The automated accelerated degradation experimental system for capacitors according to claim 2, characterized in that, The channel switching function unit is connected to the test fixture set in the environmental test chamber, wherein the channel switching function unit adopts a relay group or a mechanical action structure, and the test fixture is used to place aluminum electrolytic capacitor samples.

4. The automated accelerated degradation experimental system for capacitors according to claim 1, characterized in that, The host computer also includes: This is used to control the AC / DC superimposed experimental power supply to automatically apply AC / DC composite electrical stress to aluminum electrolytic capacitor samples, monitor their status, and provide over / under voltage and over / under current protection. It is used to control the controlled environment test chamber via control signals to achieve automatic loading of environmental stress, monitoring of test temperature and humidity, and high / low temperature protection; Used to control the access control and status monitoring of aluminum electrolytic capacitor samples by controlling the channel switching function unit through control signals; This is used to control the static parameter testing unit to test key performance parameters via control signals, wherein the key performance parameters include capacitance value, loss and equivalent series resistance; Used to control the leakage current test unit to test and record the leakage current parameters of the aluminum electrolytic capacitor sample via control signals; It is used to control the control temperature recorder to acquire temperature data of aluminum electrolytic capacitor samples through control signals, and to protect aluminum electrolytic capacitor samples from over-temperature through temperature regulation. It is used to control the environmental test chamber, the temperature recording unit, the leakage current recording unit, the static parameter testing unit, the channel conversion function unit, and the AC / DC superimposed experimental power supply through control signals to complete the linkage control; The collected test data is calibrated, and the calibrated test data is used to generate test reports in a preset format.

5. A method for automatically accelerating capacitor degradation experiments according to any one of claims 1-4, characterized in that, include: Obtain experimental test parameters, and set the test equipment in sequence according to the experimental test parameters. The test equipment includes an environmental test chamber and an external power supply, a temperature recording unit, a leakage current recording unit, a static parameter test unit, a channel conversion function unit, and an AC / DC superimposed experimental power supply. Acquire monitoring data of aluminum electrolytic capacitor samples, issue control signals for safety testing based on the monitoring data and preset test safety values ​​of aluminum electrolytic capacitor samples, and determine the equipment for testing based on the monitoring data; The status of the aluminum electrolytic capacitor samples and the equipment is calibrated and then displayed through an interactive interface, with alarms issued for aluminum electrolytic capacitor samples and equipment with abnormal status.

6. The automated accelerated degradation test method for capacitors according to claim 5, characterized in that, The step of acquiring experimental test parameters and setting the test equipment sequentially according to the experimental test parameters also includes: The test equipment performs a self-test and reports the results. The self-test of the test equipment includes the environmental signal of the environmental test chamber, the channel status of the channel conversion function unit, the power protection function of the AC / DC superimposed experimental power supply, and the temperature protection function of the temperature recording unit. The testing equipment is automatically adjusted based on the self-test results.

7. The automated accelerated degradation experimental method for capacitors according to claim 6, characterized in that, The method further includes: Environmental test chamber and external power supply, temperature recording unit, leakage current recording unit, static parameter testing unit, channel conversion function unit and AC / DC superimposed experimental power supply. The linkage control is performed by control signals, which includes sequentially performing an AC / DC superimposed experimental power supply on the aluminum electrolytic capacitor sample for AC / DC superimposed durability test, stopping the output and discharging, and recording whether the discharge is abnormal. The LCR tester of the static parameter test unit is connected to the test circuit through the channel conversion function unit, and the LCR tester is recorded as abnormal. The aluminum electrolytic capacitor sample is connected to the test circuit through the channel conversion function unit, and the capacitance, loss and equivalent series resistance (ESR) parameters of the aluminum electrolytic capacitor sample are recorded in sequence, and whether the capacitance parameters are abnormal is also recorded. The leakage current recording unit is connected to the test circuit through the channel conversion function unit, and the leakage current recording unit is recorded as abnormal. The aluminum electrolytic capacitor sample is connected to the test circuit again through the channel conversion function unit, the leakage current parameters of the aluminum electrolytic capacitor sample are recorded, and the capacitance state of the aluminum electrolytic capacitor sample is recorded as abnormal. Abnormal data on equipment status and test data of aluminum electrolytic capacitor samples are displayed through an interactive interface.

8. An automated experimental device for accelerating capacitor degradation, characterized in that, include: The first module is used to acquire experimental test parameters and set the test equipment in sequence according to the experimental test parameters. The test equipment includes an environmental test chamber and an external power supply, a temperature recording unit, a leakage current recording unit, a static parameter test unit, a channel conversion function unit, and an AC / DC superimposed experimental power supply. The second module is used to acquire monitoring data of aluminum electrolytic capacitor samples, issue control signals for safety testing based on the monitoring data and preset test safety values ​​of aluminum electrolytic capacitor samples, and determine the equipment for testing based on the monitoring data. The third module is used to display the status of aluminum electrolytic capacitor samples and equipment through an interactive interface, and to issue alarms for aluminum electrolytic capacitor samples and equipment with abnormal status.

9. An electronic device, characterized in that, Including the processor and memory; The memory is used to store programs; The processor executes the program to implement the experimental method for automated accelerated degradation of capacitors as described in any one of claims 5-7.

10. A computer-readable storage medium, characterized in that, The storage medium stores a program that is executed by a processor to implement the experimental method for automated accelerated degradation of capacitors as described in any one of claims 5-7.

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