CN-122017362-A - Capacitive automatic accelerated degradation experiment system, method, device, equipment and medium

CN122017362ACN 122017362 ACN122017362 ACN 122017362ACN-122017362-A

Abstract

The invention provides a capacitor automatic accelerated degradation experiment system, a method, a device, equipment and a medium, which comprise the steps of taking an aluminum electrolytic capacitor as a measured object, taking an upper computer as a control core, accelerating an aluminum capacitor accelerated test mainly through environmental stress and electric stress, applying direct-current voltage and alternating-current ripple current composite electric stress to a sample to be tested through an alternating-current and direct-current superimposed experiment power supply, applying temperature and humidity environmental stress through a control environment test box, and simultaneously monitoring the temperature state of the capacitor to be tested, and collecting and recording the capacitance, loss/DF, equivalent series resistance/ESR and leakage current/LC parameters of the aluminum capacitor in an interval period of test. The method has the beneficial effects that the accelerated degradation testing efficiency and the testing accuracy of the aluminum electrolytic capacitor are improved.

Inventors

HOU YI
LAI WEI
YANG CHAO
XIAO YAO
LI QIANG
LIU MIN
YANG CHENG
HU QIWEN
LI YANFENG

Assignees

中车株洲电力机车研究所有限公司

Dates

Publication Date: 20260512
Application Date: 20241112

Claims (10)

1. An automated accelerated degradation experiment system for a capacitor, comprising: The system comprises an upper computer, an environment test box, an external power supply, a temperature recording unit, a leakage current recording unit, a static parameter testing unit, a channel conversion functional unit and an alternating current-direct current superposition experimental power supply; The environment test box is provided with a plurality of aluminum electrolytic capacitor samples; The upper computer and the external power supply are used for respectively sending control signals and supplying power to the environment test box, the temperature recording unit, the leakage current recording unit, the static parameter testing unit, the channel conversion functional unit and the alternating current-direct current superimposed experimental power supply; The environment test box, the temperature recording unit, the leakage current recording unit, the static parameter testing unit, the channel conversion functional unit and the alternating current-direct current superposition experimental power supply respectively carry out environment stress configuration, temperature data acquisition, leakage current parameter test, key performance parameter test, sample access and control and alternating current-direct current composite electric stress loading and monitoring on the aluminum electrolytic capacitor sample according to the control signals; The upper computer is used for acquiring test data returned by the environment test box, the temperature recording unit, the leakage current recording unit, the static parameter testing unit, the channel conversion functional unit and the alternating current-direct current superposition experimental power supply, and generating a test report of the aluminum electrolytic capacitor sample according to the test data.
2. The system of claim 1, wherein the channel switching functional unit is configured to perform access, excision and state monitoring processing on 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 testing system of claim 2, wherein the channel switching functional unit is connected to a test fixture disposed in the environmental test chamber, wherein the channel switching functional unit employs a relay set or a mechanical action structure, and wherein the test fixture is used for placing an aluminum electrolytic capacitor sample.
4. The automated accelerated degradation experiment system of claim 1, wherein the host computer further comprises: The experimental power supply is used for controlling the automatic loading, state monitoring and over/under-voltage and over/under-current protection of the alternating current/direct current composite electric stress of the alternating current/direct current superposition experimental power supply to the aluminum electrolytic capacitor sample through a control signal; The control environment test box is controlled by a control signal to realize automatic loading of environmental stress, monitoring of test temperature and humidity and high/low temperature protection; the channel conversion function unit is used for controlling the access control and the state monitoring of the aluminum electrolytic capacitor sample by the control signal; The static parameter testing unit is used for testing key performance parameters by controlling the static parameter testing unit through control signals, wherein the key performance parameters comprise capacitance, loss and equivalent series resistance; the leakage current testing unit is used for controlling the test and recording of the leakage current parameters of the aluminum electrolytic capacitor sample by the control signal; The temperature data of the aluminum electrolytic capacitor sample is obtained by controlling the temperature recorder through a control signal, and the aluminum electrolytic capacitor sample is protected from over-temperature through temperature regulation; The control unit is used for controlling the environment test box, the temperature recording unit, the leakage current recording unit, the static parameter testing unit, the channel conversion functional unit and the alternating current-direct current superposition experimental power supply through control signals so as to complete linkage control; And carrying out calibration processing on the collected test data, and generating a test report form according to a preset format by the calibrated test data.
5. A method of automated accelerated degradation testing of capacitance according to any of the claims 1-4, comprising: acquiring experimental test parameters, and sequentially setting test equipment according to the experimental test parameters, wherein the test equipment comprises an environment test box and an external power supply, a temperature recording unit, a leakage current recording unit, a static parameter test unit, a channel conversion functional unit and an alternating current-direct current superimposed experimental power supply; Acquiring monitoring data of an aluminum electrolytic capacitor sample, issuing a control signal for safety test according to the monitoring data and a preset test safety value of the aluminum electrolytic capacitor sample, and determining equipment of test equipment according to the monitoring data; and after the state of the aluminum electrolytic capacitor sample and the state of the equipment are calibrated, displaying the state through an interactive interface, and alarming the aluminum electrolytic capacitor sample and the equipment with abnormal states.
6. The method for automated accelerated degradation testing of capacitors of claim 5, wherein said obtaining experimental test parameters, sequentially configuring test equipment according to said experimental test parameters, further comprises: The self-checking is carried out through the testing equipment, and the self-checking result is reported, wherein the self-checking of the testing equipment comprises an environmental signal of an environmental test box, a channel state of a channel conversion functional unit, a power protection function of an alternating-current and direct-current superimposed experimental power supply and a temperature protection function of a temperature recording unit; and automatically adjusting the test equipment according to the self-checking result.
7. The method of automated accelerated degradation testing of capacitance of claim 6, further comprising: environmental test box and external power supply, temperature recording unit, leakage current recording unit, static parameter testing unit, channel conversion functional unit and AC/DC superimposed experimental power supply The linkage control is carried out through the control signal, the method sequentially comprises the steps of carrying out an alternating current-direct current superposition durability test on an aluminum electrolytic capacitor sample by an alternating current-direct current superposition experimental power supply, stopping outputting and discharging, and recording whether the discharging is abnormal or not; accessing an LCR tester of the static parameter testing unit into a testing loop through a channel conversion functional unit, and recording whether the LCR tester is abnormal or not; The method comprises the steps of connecting an aluminum electrolytic capacitor sample into a test loop through a channel conversion functional unit, sequentially recording the capacitance, loss and equivalent series resistance ESR parameters of the aluminum electrolytic capacitor sample, and recording whether the capacitor parameters are abnormal or not; The leakage current recording unit is connected into the test loop through the channel conversion functional unit, whether the leakage current recording unit is abnormal or not is recorded, the aluminum electrolytic capacitor sample is connected into the test loop again through the channel conversion functional unit, leakage current parameters of the aluminum electrolytic capacitor sample are recorded, and whether the capacitance state of the aluminum electrolytic capacitor sample is abnormal or not is recorded; And displaying the abnormal data of the equipment state and the test data of the aluminum electrolytic capacitor sample through an interactive interface.
8. An automated accelerated degradation experimental device for a capacitor, comprising: The first module is used for acquiring experimental test parameters and sequentially setting test equipment according to the experimental test parameters, wherein the test equipment comprises an environment test box and an external power supply, a temperature recording unit, a leakage current recording unit, a static parameter test unit, a channel conversion functional unit and an alternating current-direct current superimposed experimental power supply; the second module is used for acquiring monitoring data of the aluminum electrolytic capacitor sample, issuing a control signal for safety test according to the monitoring data and a preset test safety value of the aluminum electrolytic capacitor sample, and determining equipment of test equipment according to the monitoring data; And the third module is used for displaying the state of the aluminum electrolytic capacitor sample and the state of equipment through an interactive interface and alarming the aluminum electrolytic capacitor sample and the equipment with abnormal states.
9. An electronic device comprising a processor and a memory; the memory is used for storing programs; Execution of the program by the processor implements the method of automated accelerated degradation experiment of capacitance according to any one of claims 5-7.
10. A computer-readable storage medium, wherein the storage medium stores a program that is executed by a processor to implement the method of automated accelerated degradation testing of capacitance according to any one of claims 5-7.

Description

Capacitive automatic accelerated degradation experiment system, method, device, equipment and medium Technical Field The invention relates to the technical field of capacitance testing, in particular to a capacitance automatic accelerated degradation experiment system, a method, a device, equipment and a medium. Background The aluminum electrolytic capacitor has the advantages of large capacity and small volume, can realize the functions of energy storage, filtering and the like, and is widely used in the fields of consumer electronics, photovoltaics, wind power, automobile industry and the like. The reliability of the aluminum electrolytic capacitor is directly related to the stability and safety of the whole power electronic system, so that the reliability and the service life level of the aluminum electrolytic capacitor must be comprehensively tested and evaluated before the aluminum electrolytic capacitor is selected. In order to improve reliability evaluation efficiency of the aluminum electrolytic capacitor, an accelerated degradation test under the composite condition of environmental stress and electric stress needs to be developed, so that the degradation process of the aluminum electrolytic capacitor is accelerated, and the degradation track of the full life cycle of the aluminum electrolytic capacitor is rapidly acquired. The test equipment, the test power supply, the environment box and the like are used by the experimenter in stages to perform test channel conversion on the aluminum electrolytic capacitor, test data of the tested product are manually recorded and collected, and the problems of multiple test operation times, strong dependence on the experimenter level, low data processing efficiency and the like exist. Disclosure of Invention The embodiment of the invention mainly aims to provide a capacitor automatic accelerated degradation experiment system, a method, a device, equipment and a medium, which improve the efficiency and the accuracy of the accelerated degradation test of an aluminum electrolytic capacitor. One aspect of the present invention provides a capacitive automatic accelerated degradation experiment system, comprising: The system comprises an upper computer, an environment test box, an external power supply, a temperature recording unit, a leakage current recording unit, a static parameter testing unit, a channel conversion functional unit and an alternating current-direct current superposition experimental power supply; The environment test box is provided with a plurality of aluminum electrolytic capacitor samples; The upper computer and the external power supply are used for respectively sending control signals and supplying power to the environment test box, the temperature recording unit, the leakage current recording unit, the static parameter testing unit, the channel conversion functional unit and the alternating current-direct current superimposed experimental power supply; The environment test box, the temperature recording unit, the leakage current recording unit, the static parameter testing unit, the channel conversion functional unit and the alternating current-direct current superposition experimental power supply respectively carry out environment stress configuration, temperature data acquisition, leakage current parameter test, key performance parameter test, sample access and control and alternating current-direct current composite electric stress loading and monitoring on the aluminum electrolytic capacitor sample according to the control signals; The upper computer is used for acquiring test data returned by the environment test box, the temperature recording unit, the leakage current recording unit, the static parameter testing unit, the channel conversion functional unit and the alternating current-direct current superposition experimental power supply, and generating a test report of the aluminum electrolytic capacitor sample according to the test data. According to the capacitor automatic accelerated degradation experiment system, the channel conversion functional unit is used for carrying out access, excision and state monitoring treatment on the aluminum electrolytic capacitor samples corresponding to the temperature recording unit, the leakage current recording unit and the static parameter testing unit. According to the capacitor automatic accelerated degradation experiment system, the channel conversion functional unit is connected with the test fixture arranged in the environment test box, the channel conversion functional unit adopts a relay group or a mechanical action structure, and the test fixture is used for placing an aluminum electrolytic capacitor sample. According to the capacitor automatic degradation acceleration experimental system, the upper computer further comprises: The experimental power supply is used for controlling the automatic loading, state monitoring and over/under-voltage and over/under-current protection of the alt