Charger test overload protection method and system

Abstract

The invention relates to a charger test overload protection method and system, and relates to the technical field of charger overload protection testing, and the method comprises the steps: collecting and monitoring a detection current when a charger is tested, and carrying out the calculation according to a preset threshold value calculation strategy when the detection current is at a preset safety current critical value, so as to determine a safety threshold value; comparing the safety threshold value with a preset danger threshold value, and when the safety threshold value is equal to or greater than the preset danger threshold value of the overload protector, indicating a preset test current adjusting device to perform test current adjustment; the calculation formula of the threshold value calculation strategy is as follows: # imgabs0 # # imgabs1 #, S represents the safety threshold value, Iavg represents the average current in a period of time, Imax represents the maximum allowable current of the charger, T represents the time length, and I (tau) represents the instantaneous current at the tau moment. The method and the device have the effect of reducing the probability of short circuit in the charger inspection process.

Description

Technical Field

[0001] The present application relates to the technical field of charger overload protection testing, and in particular to a charger overload protection testing method and system. Background Art

[0002] During the production process, the charger needs to be tested accordingly to screen out qualified and unqualified products. If the input rectifier is plugged in reverse or damaged during the testing process, it is easy to cause a short circuit between the positive and negative poles of the input terminal, which can easily cause a fire accident. Therefore, a corresponding overload protector needs to be set for short-circuit protection.

[0003] In the related art, in order to reduce the occurrence of short-circuit hidden dangers, an incandescent bulb is usually connected in series in the detection circuit loop. However, when the resistance of the bulb is large, the charger works at full load. In addition, some use AC overload protectors for circuit protection, but the AC overload protector has a delay time, so that a short circuit has occurred before the protector is activated, which is not conducive to timing to protect the detection work.

[0004] With respect to the above-mentioned related technologies, in order to reduce the probability of short circuit during the charger inspection process, it is urgent to design a corresponding overload protector to protect the detection circuit. Summary of the invention

[0005] In order to solve the above technical problems, the present application provides a charger overload protection method and system.

[0006] In a first aspect, the present application provides a charger overload protection method, which adopts the following technical solution:

[0007] A charger overload protection method, comprising:

[0008] The detection current of the charger during the test is collected and monitored. When the detection current is at a preset safety current critical value, a calculation is performed according to a preset threshold calculation strategy to determine a safety threshold.

[0009] Based on the comparison between the safety threshold and the preset danger threshold, when the safety threshold is equal to or greater than the preset danger threshold of the overload protector, instructing the preset test current regulating device to perform test current regulation;

[0010] The calculation formula of the threshold calculation strategy is as follows:

[0011]

[0012] Among them, S represents the safety threshold, I avg Represents the average current over a period of time, I maxrepresents the maximum allowable current of the charger, T represents the time length, and I(τ) represents the instantaneous current at time τ.

[0013] By adopting the above technical solution, during the current test and inspection process of the charger, the detection current is monitored, and the corresponding threshold analysis is performed when the current is at the critical value of the safe current. The test current is adjusted before the current overload occurs, making it less likely to have overload and short circuit hazards during the detection process, which helps to reduce the probability of safety accidents.

[0014] Optionally, the safety threshold is compared with the preset danger threshold, including:

[0015] Performing analysis based on the detected current to determine current fluctuation parameters;

[0016] Matching is performed based on the current fluctuation parameters and a preset model database to determine the charger model corresponding to the current fluctuation parameters;

[0017] Search for the corresponding danger threshold in the preset threshold database based on the charger model and replace the danger threshold;

[0018] The current fluctuation parameter is monitored, and the danger threshold is updated when the current fluctuation parameter is within a preset change fluctuation parameter interval value.

[0019] By adopting the above technical solution, different charger models are analyzed and the corresponding danger thresholds are found, so that the corresponding danger thresholds can be automatically matched during the current test detection process of the charger, making the detection result of the charger more accurate.

[0020] Optionally, the test current regulating device performs test current regulation, including:

[0021] The instantaneous current change rate is determined by calculating and analyzing the detected current. When the instantaneous current change rate is greater than the preset stable instantaneous change rate, the preset current regulation strategy is used to calculate to determine the regulation current.

[0022] Mark according to the adjustment current and charger model to determine the same current adjustment parameters of the same type of charger;

[0023] When the safety threshold is equal to or greater than the preset danger threshold of the overload protector, the same current adjustment parameters are matched according to the charger model and the current is adjusted;

[0024] The current regulation strategy is calculated using the following formula:

[0025] ΔI=I test +k·(I safe -I danger );

[0026] Among them, ΔI represents the amount of current to be adjusted, k represents the adjustment speed and amplitude proportional coefficient of the current adjustment, I safe Represents the current safety threshold, I danger Indicates the current danger threshold, I test Indicates the current value of the test current currently detected.

[0027] By adopting the above technical solution, the test current regulating device is controlled according to the current regulation strategy, so that the charger is not likely to cause the test current to be adjusted to a too low state before the test overload occurs, and there is no need to readjust the current size when the remaining chargers are tested subsequently, thereby improving the test efficiency.

[0028] Optionally, when current regulation is performed, it also includes:

[0029] performing analysis based on the detected current to determine a current test mode;

[0030] When the current test mode matches the preset high current test mode, an analysis is performed according to the preset adjustment cost analysis strategy to determine the response power consumption value;

[0031] Compare the response consumption cost value with the preset high-efficiency response cost value, and if they are greater, match the historical current regulation parameter corresponding to the instantaneous current change rate in the preset current regulation database;

[0032] Current regulation is performed based on historical current regulation parameters.

[0033] By adopting the above technical solution, the corresponding adjustment cost analysis is performed on the strong circuit test mode, thereby analyzing the response time value required for the corresponding adjustment. Under the premise of not meeting the efficient response, the adjustment is performed by matching the historical current adjustment parameters to reduce the response time, which helps to quickly and timely adjust the current and reduce the occurrence of overload and short circuit accidents.

[0034] Optionally, when determining the response time value, the adjustment cost analysis strategy uses the following formula for analysis:

[0035] C(I)=k·T d ;

[0036] Cost(I)=C(I)+δ(II thresh )·T fixed ;

[0037] Where C(I) is the test cost function in the current test mode, k represents the proportional constant between time cost and current intensity, Cost(I) represents the response time value, δ is the preset unit cross-order function, T fixed Represents the fixed time cost required to respond to overload protection.

[0038] By adopting the above technical solution, the response time cost is calculated according to the test cost function in the current test mode, so as to compare and analyze the response time cost and perform current regulation.

[0039] Optionally, when collecting the detection current of the charger during testing and monitoring, it includes:

[0040] Collect the test environment temperature of the charger, and when the test environment temperature is within the preset abnormal temperature range, match the noise reduction coefficient corresponding to the instantaneous current change rate in the preset translational filter database;

[0041] Based on the noise reduction coefficient, the instantaneous fluctuation noise reduction processing is performed on the detection current to obtain the optimized current parameter, and the optimized current parameter is updated as the detection current.

[0042] By adopting the above technical solution, when collecting the detection current, the abnormality of the test environment temperature is analyzed, and the corresponding noise reduction coefficient is matched to perform current instantaneous fluctuation noise reduction processing, which helps to remove interference in the circuit.

[0043] Optionally, when the test environment temperature is within a preset abnormal temperature range, it includes:

[0044] Compare and analyze the test environment temperature to determine whether the test environment corresponding to the test environment temperature is a low-temperature test environment or a high-temperature test environment;

[0045] Match the correction coefficients in the preset noise reduction correction database based on the low temperature test environment and the high temperature test environment;

[0046] A calculation is performed based on the correction factor and the noise reduction coefficient to determine a target noise reduction coefficient, and the noise reduction coefficient is replaced according to the target noise reduction coefficient.

[0047] By adopting the above technical solution, an environmental analysis of the test environment temperature is performed, and the corresponding correction coefficient is matched according to the low-temperature test environment and the high-temperature test environment to correct the value of the noise reduction coefficient. This can accurately eliminate interference caused by instantaneous fluctuations in different types of temperature environments, which helps to improve the reliability of the detection current.

[0048] In a second aspect, the present application provides a charger test overload protection system, which adopts the following technical solution:

[0049] A charger test overload protection system, comprising:

[0050] Acquisition module, used for acquisition;

[0051] A memory for storing a program for testing an overload protection method of a charger in any one of the items;

[0052] The program in the processor memory can be loaded and executed by the processor to implement any one of the charger test overload protection methods.

[0053] By adopting the above technical solution, during the current test and inspection process of the charger, the detection current is monitored, and the corresponding threshold analysis is performed when the current is at the critical value of the safe current. The test current is adjusted before the current overload occurs, making it less likely to have overload and short circuit hazards during the detection process, which helps to reduce the probability of safety accidents.

[0054] In summary, the present application includes at least one of the following beneficial technical effects:

[0055] 1. During the current test of the charger, the detection current is monitored, and the corresponding threshold analysis is performed when the current is at the critical value of the safe current. The test current is adjusted before the current overload occurs, so that the detection process is not prone to overload and short circuit hazards, which helps to reduce the probability of safety accidents;

[0056] 2. The test current regulating device is controlled according to the current regulating strategy, so that the test current is not easily adjusted to a too low state before the test overload occurs, and there is no need to readjust the current size when the remaining chargers are tested later, thereby improving the test efficiency;

[0057] 3. Perform environmental analysis on the test environment temperature, and match the corresponding correction coefficient according to the low-temperature test environment and the high-temperature test environment to correct the value of the noise reduction coefficient. This can accurately eliminate the interference caused by instantaneous fluctuations in different types of temperature environments, which helps to improve the reliability of the detection current. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] Figure 1 It is a method flow chart of steps S100 to S200 in this application.

[0059] Figure 2 It is a method flow chart of steps S201 to S204 in this application.

[0060] Figure 3 It is a method flow chart of steps S205 to S207 in this application.

[0061] Figure 4 It is a method flow chart of steps S2071 to S2074 in this application.

[0062] Figure 5 It is a method flow chart of steps S2075 to S2076 in this application.

[0063] Figure 6 It is a method flow chart of steps S2077 to S2079 in this application.

[0064] Figure 7 This is a partial module circuit diagram of the overload protector in this application.

[0065] Figure 8 This is the circuit diagram of the remaining modules of the overload protector in this application. DETAILED DESCRIPTION

[0066] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1-8 It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0067] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0068] The embodiment of the present application discloses a charger test overload protection method. During the current test and inspection process of the charger, the detection current is monitored, and a corresponding threshold analysis is performed when the current is at a safe current critical value. The test current is adjusted before the current overload occurs, so that the detection process is not prone to overload and short circuit hazards, thereby helping to reduce the probability of safety accidents.

[0069] Reference Figure 1 The method flow of the charger overload protection test method includes the following steps:

[0070] Step S100: collecting and monitoring the detection current of the charger during the test. When the detection current is at a preset safety current critical value, calculating according to a preset threshold calculation strategy to determine a safety threshold.

[0071] When performing current detection and testing, corresponding current sensors can be used for detection, such as Hall effect sensors. The safety current critical value is a pre-set current critical value, which indicates that the detection current is within the critical current value within the safety range. When the critical current value is exceeded, it means that the current in the circuit is large and is in a state where short circuit hazards are likely to occur. In addition, the safety threshold value indicates that the current threshold corresponding to the detection current is within the safety range and is set by the staff. The threshold calculation strategy is further detailed in the subsequent steps. The safety threshold corresponding to the detection current can be calculated through the threshold calculation strategy to facilitate further calls in the subsequent steps.

[0072] Step S200: comparing the safety threshold with the preset danger threshold, when the safety threshold is equal to or greater than the preset danger threshold of the overload protector, instructing the preset test current regulating device to perform test current regulation;

[0073] The dangerous threshold means that the detection current is large, which can easily cause the charger to overload. The specific threshold value is recorded by personnel through current overload test experiments. By comparing the safe threshold and the dangerous threshold, it can be known whether the charger is overloaded and short-circuited during the current test, so as to adjust the test current in time. The test current adjustment device is a control chip pre-connected to the current source, which can receive and respond to the current adjustment signal.

[0074] The calculation formula of the threshold calculation strategy is as follows:

[0075]

[0076] Among them, S represents the safety threshold, I avg Represents the average current over a period of time, I max represents the maximum allowable current of the charger, T represents the time length, I(τ) represents the instantaneous current at time τ, and S(t) represents the functional relationship between the safety threshold and the maximum allowable current in time.

[0077] Reference Figure 2 , when the safety threshold is compared with the preset danger threshold, it includes:

[0078] Step S201: Analyze based on the detected current to determine the current fluctuation parameter;

[0079] The current fluctuation parameter indicates the current size and the rate of change of the current size passing through the charger when the charger performs current detection. Different types of chargers generate different current sizes and current size change rates when charging. The reason is that the rated charging current size and the fast charging and slow charging types are different, which makes the internal charging structure of the charger different. Therefore, the current fluctuation parameter can map the corresponding type of charger.

[0080] Step S202: matching the current fluctuation parameter with a preset model database to determine the charger model corresponding to the current fluctuation parameter;

[0081] By storing different charger models in a model database and storing current fluctuation parameters corresponding to the charger models, when the current fluctuation parameters are input, the corresponding charger model can be automatically matched and output for easy call in subsequent analysis.

[0082] Step S203: searching for a corresponding danger threshold in a preset threshold database based on the charger model, and replacing the danger threshold;

[0083] Chargers corresponding to different charger models have different danger thresholds due to the different rated currents they can withstand. A threshold database can be established in advance to store different charger models in the threshold database, and the danger thresholds of the corresponding charger models are stored. When the charger model is input, the corresponding danger threshold is matched and output, and the previous danger threshold is replaced to update the danger threshold of different charger models, which helps to improve the overload regulation accuracy of chargers of different models.

[0084] Step S204: monitor the current fluctuation parameter, and update the danger threshold when the current fluctuation parameter is within a preset change fluctuation parameter interval value.

[0085] By monitoring the current fluctuation parameters, when the current fluctuation parameters change, it means that the charger model has changed, so the danger threshold is updated, so that the accurate danger threshold can be adjusted in time, thereby improving the test accuracy of the charger.

[0086] Reference Figure 3 , when the test current regulating device performs test current regulation, it includes:

[0087] Step S205: Calculate and analyze the instantaneous current change rate according to the detected current, and when the instantaneous current change rate is greater than the preset stable instantaneous change rate, calculate with the preset current regulation strategy to determine the regulation current;

[0088] The instantaneous current change rate indicates the rate at which the current parameter changes during detection, and the stable instantaneous change rate indicates the normal current fluctuation value within the allowable range, which does not affect the normal charging test of the charger. The specific calculation method of the current regulation strategy is further explained in the subsequent steps.

[0089] The current regulation is to adjust the magnitude of the detection current so that the safety threshold corresponding to the detection current is smaller than the danger threshold, and the magnitude of the current that needs to be adjusted.

[0090] Step S206: marking according to the adjustment current and the charger model to determine the same current adjustment parameters of the same type of chargers;

[0091] Step S207: When the safety threshold is equal to or greater than the danger threshold preset by the overload protector, matching the same type of current adjustment parameters according to the charger model and performing current adjustment;

[0092] The charger model corresponding to the regulated current is marked so that the current parameters that need to be adjusted when different types of chargers produce a large instantaneous current change rate can be known. The current parameters are defined as similar current regulation parameters for subsequent direct calls, which helps to reduce analysis time and improve the response speed of overload protection.

[0093] The current regulation strategy is calculated using the following formula:

[0094] ΔI=I test +k·(I safe -I danger );

[0095] Among them, ΔI represents the amount of current to be adjusted, k represents the adjustment speed and amplitude proportional coefficient of the current adjustment, I safe Indicates the current safety threshold, I danger Indicates the current danger threshold, I test Indicates the current value of the test current currently detected.

[0096] Reference Figure 4 , when current regulation is performed, it also includes:

[0097] Step S2071: analyzing based on the detected current to determine the current test mode;

[0098] The current test mode refers to the current intensity mode used when the charger performs a charging test, including a high current test mode and a low current test mode. By analyzing the current magnitude of the detection current, the current test mode corresponding to the current intensity can be obtained.

[0099] Step S2072: when the current test mode matches the preset high current test mode, an analysis is performed according to the preset adjustment cost analysis strategy to determine the response power consumption value;

[0100] When the current test mode is a high current test mode, it means that the speed of the current when a short circuit occurs requires a faster response time than that of the current test mode. The set cost adjustment analysis strategy is used to perform calculation analysis to determine the response cost value of matching and calling the required adjustment current.

[0101] When determining the value of the response time, the adjustment cost analysis strategy uses the following formula:

[0102] C(I)=k·T d ;

[0103] Cost(I)=C(I)+δ(II thresh )·T fixed ;

[0104] Where C(I) is the test cost function in the current test mode, k represents the proportional constant between time cost and current intensity, Cost(I) represents the response time value, δ is the preset unit cross-order function, T fixed represents the fixed time cost required to respond to overload protection;

[0105] Step S2073: Compare the response consumption cost value with the preset high-efficiency response cost value, and if they are greater, match the historical current regulation parameter corresponding to the instantaneous current change rate in the preset current regulation database;

[0106] The efficient response cost value is a pre-set cost coefficient value, which indicates the time required for a quick response to overload protection. By comparing the response cost value with the efficient response cost value, when the response cost value is greater than the efficient response cost value, it indicates that the current regulation measures for overload protection cannot be responded to quickly at this time. Then, the corresponding historical current regulation parameter query is performed according to the pre-set current regulation database, so that it can be directly called in the subsequent current regulation, which helps to save response time.

[0107] Step S2074: performing current regulation based on historical current regulation parameters.

[0108] By directly calling the queried historical current regulation parameters and performing current regulation, fast current regulation can be achieved.

[0109] Reference Figure 5 , when collecting the detection current of the charger during testing and monitoring, including:

[0110] Step S2075: collecting the test environment temperature of the charger, and when the test environment temperature is within a preset abnormal temperature range, matching the noise reduction coefficient corresponding to the instantaneous current change rate in the preset translational filter database;

[0111] The test environment temperature is the environment temperature of the charger when the current charging test is performed. The environment temperature has little effect on the charger under natural conditions, but has a relatively large impact under some extreme conditions. In order to make the results of the charger current test experiment more comprehensive, the corresponding extreme environment temperature will be set, and the temperature value exceeding the natural temperature will be defined as the abnormal temperature interval value. At the same time, a translational filter database is pre-established, and different instantaneous current change rates are stored in the translational filter database, and the corresponding noise reduction coefficient is stored, so that the corresponding noise reduction coefficient can be queried according to the input instantaneous current change rate. Among them, the noise reduction coefficient represents the proportional coefficient value when the detection current is processed by translational filtering at different temperatures, which can eliminate the noise of the detection current.

[0112] Step S2076: performing instantaneous fluctuation noise reduction processing on the detection current based on the noise reduction coefficient to obtain optimized current parameters, and updating the optimized current parameters to the detection current.

[0113] The detection current is filtered by installing a noise reduction coefficient through a preset translational filter, and the current parameters obtained after the processing are defined as optimized current parameters, which are replaced and updated with the detection current for use, so that when the detection current is subsequently called for analysis, it is not easy to be affected by the interference current of the current and reduce the accuracy of the analysis result.

[0114] Reference Figure 6 , when the test environment temperature is within the preset abnormal temperature range, including:

[0115] Step S2077: performing comparative analysis on the test environment temperature to determine whether the test environment corresponding to the test environment temperature is a low-temperature test environment or a high-temperature test environment;

[0116] By analyzing the test environment temperature, it can be known whether the test environment temperature is high or low, and divided into low-temperature test environment and high-temperature test environment according to the temperature, so as to accurately match the corresponding noise reduction coefficient.

[0117] Step S2078: matching the correction coefficients in the preset noise reduction correction database based on the low temperature test environment and the high temperature test environment;

[0118] Corresponding correction coefficients are set for high temperature test environments and low temperature test environments, and a noise reduction correction database is established to store the correction coefficients of the corresponding temperatures of the high temperature test environment and the low temperature test environment for easy query and call.

[0119] Step S2079: Calculate based on the correction coefficient and the noise reduction coefficient to determine the target noise reduction coefficient, and replace the noise reduction coefficient according to the target noise reduction coefficient.

[0120] The difference between the correction coefficient and the noise reduction coefficient is calculated, and the calculated coefficient is defined as the target noise reduction coefficient, which is then replaced with a new noise reduction coefficient so that the detection current can be directly optimally filtered according to the noise reduction coefficient.

[0121] Reference Figure 7 and Figure 8, multiple circuit modules are arranged in the overload protector, including an AC-DC conversion module, a DC-AC conversion module, an auxiliary power supply module, a display module, a MUC control module and a test current regulation module. Among them, the AC-DC conversion module and the DC-AC conversion module are used to convert alternating current and direct current to adapt to detection operations under different currents. The display module is connected to the liquid crystal display screen to display the detected current parameters, and the auxiliary power supply module is connected to the MUC control module to provide auxiliary power. The test current regulation module is connected to the MUC control module, and can receive the current regulation signal and send out the corresponding feedback signal. After receiving the feedback signal, the MUC control module transmits it to the external test current regulation device to indicate that the current regulation device completes the current regulation. When the regulation fails, the MUC control module controls the circuit to be cut off to achieve overload protection.

[0122] Based on the same inventive concept, an embodiment of the present invention provides a charger test overload protection system, comprising:

[0123] The acquisition module collects and monitors the detection current of the charger during the test. When the detection current is at the preset safety current critical value, the threshold analysis module calculates according to the preset threshold calculation strategy to determine the safety threshold;

[0124] The threshold comparison module compares the safety threshold and the preset danger threshold. When the safety threshold is equal to or greater than the preset danger threshold of the overload protector, the test current regulation module instructs the preset test current regulation device to perform test current regulation.

[0125] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0126] An embodiment of the present invention provides a computer-readable storage medium storing a computer program that can be loaded by a processor and execute a charger overload protection method.

[0127] Computer storage media include, for example, various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0128] Based on the same inventive concept, an embodiment of the present invention provides an intelligent terminal, including a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and execute a charger test overload protection method.

[0129] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0130] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Any feature disclosed in this specification (including the abstract and drawings), unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

Claims

1. A charger overload protection method, characterized in that: include: The detection current of the charger during the test is collected and monitored. When the detection current is at a preset safety current critical value, a calculation is performed according to a preset threshold calculation strategy to determine a safety threshold. Based on the comparison between the safety threshold and the preset danger threshold, when the safety threshold is equal to or greater than the preset danger threshold of the overload protector, instructing the preset test current regulating device to perform test current regulation; The calculation formula of the threshold calculation strategy is as follows: Among them, S represents the safety threshold, I avg Represents the average current over a period of time, I max represents the maximum allowable current of the charger, T represents the time length, and I(τ) represents the instantaneous current at time τ.

2. The charger test overload protection method according to claim 1, characterized in that: When the safety threshold is compared with the preset danger threshold, it includes: Performing analysis based on the detected current to determine current fluctuation parameters; Matching is performed based on the current fluctuation parameters and a preset model database to determine the charger model corresponding to the current fluctuation parameters; Search for the corresponding danger threshold in the preset threshold database based on the charger model and replace the danger threshold; The current fluctuation parameter is monitored, and the danger threshold is updated when the current fluctuation parameter is within a preset change fluctuation parameter interval value.

3. The charger test overload protection method according to claim 2, characterized in that: The test current regulating device performs test current regulation, including: The instantaneous current change rate is determined by calculating and analyzing the detected current. When the instantaneous current change rate is greater than the preset stable instantaneous change rate, the preset current regulation strategy is used to calculate to determine the regulation current. Mark according to the adjustment current and charger model to determine the same current adjustment parameters of the same type of charger; When the safety threshold is equal to or greater than the preset danger threshold of the overload protector, the same current adjustment parameters are matched according to the charger model and the current is adjusted; The current regulation strategy is calculated using the following formula: ΔI=I test +k·(I safe -I danger ); Among them, ΔI represents the amount of current to be adjusted, k represents the adjustment speed and amplitude proportional coefficient of the current adjustment, I safe Indicates the current safety threshold, I danger Indicates the current danger threshold, I test Indicates the current value of the test current currently detected.

4. The charger test overload protection method according to claim 3, characterized in that: When current regulation is performed, it also includes: performing analysis based on the detected current to determine a current test mode; When the current test mode matches the preset high current test mode, an analysis is performed according to the preset adjustment cost analysis strategy to determine the response power consumption value; Compare the response consumption cost value with the preset high-efficiency response cost value, and if they are greater, match the historical current regulation parameter corresponding to the instantaneous current change rate in the preset current regulation database; Current regulation is performed based on historical current regulation parameters.

5. The charger test overload protection method according to claim 4, characterized in that: When determining the value of the response time, the adjustment cost analysis strategy uses the following formula: C(I)=k·T d ; Cost(I)=C(I)+δ(I-I thresh )·T fixed ; Where C(I) is the test cost function in the current test mode, k represents the proportional constant between time cost and current intensity, Cost(I) represents the response time value, δ is the preset unit cross-order function, T fixed Represents the fixed time cost required to respond to overload protection.

6. The charger test overload protection method according to claim 3, characterized in that: When collecting and monitoring the detection current of the charger during testing, it includes: Collect the test environment temperature of the charger, and when the test environment temperature is within the preset abnormal temperature range, match the noise reduction coefficient corresponding to the instantaneous current change rate in the preset translational filter database; Based on the noise reduction coefficient, the instantaneous fluctuation noise reduction processing is performed on the detection current to obtain the optimized current parameter, and the optimized current parameter is updated as the detection current.

7. The charger test overload protection method according to claim 6, characterized in that: When the test environment temperature is within the preset abnormal temperature range, including: Compare and analyze the test environment temperature to determine whether the test environment corresponding to the test environment temperature is a low-temperature test environment or a high-temperature test environment; Match the correction coefficients in the preset noise reduction correction database based on the low temperature test environment and the high temperature test environment; A calculation is performed based on the correction factor and the noise reduction coefficient to determine a target noise reduction coefficient, and the noise reduction coefficient is replaced according to the target noise reduction coefficient.

8. A charger test overload protection system, characterized in that: include: The acquisition module collects and monitors the detection current of the charger during the test. When the detection current is at the preset safety current critical value, the threshold analysis module calculates according to the preset threshold calculation strategy to determine the safety threshold; The threshold comparison module compares the safety threshold and the preset danger threshold. When the safety threshold is equal to or greater than the preset danger threshold of the overload protector, the test current regulation module instructs the preset test current regulation device to perform test current regulation.

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