Bidirectional direct-current power supply for new energy automobile test based on data processing and analysis

Abstract

The invention discloses a bidirectional direct current power supply for new energy automobile testing based on data processing and analysis, and belongs to the technical field of electric control testing. A data processing and analysis-based bidirectional direct current power supply for new energy automobile testing comprises a data acquisition module, a conversion module, an analysis and detection module and a protection early warning module. According to the invention, the problem in the prior art that tiny faults or hidden problems may not be completely exposed through electric signal acquisition when detection is carried out through electric signal acquisition is solved, the accuracy and credibility of voltage data and current data can be improved, stable output can be provided under various working conditions, and the reliability of detection is improved. The bidirectional direct-current power supply can highly accurately simulate the charging and discharging characteristics of various types of batteries, ensure the accuracy of test results, detect tiny fault codes and potential fault codes and abnormal conditions, improve the safety performance of test links to the greatest extent, ensure that a new energy automobile can be early warned in time when control parameters are abnormal, and improve the reliability of the new energy automobile. And further expansion of faults is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of electric control testing, and in particular to a bidirectional direct current power supply for testing new energy vehicles based on data processing and analysis. Background Art

[0002] The current performance status of power batteries in the fields of new energy vehicles, distributed energy storage and other related application areas needs to be evaluated.

[0003] The Chinese patent with publication number CN107402566A discloses an electric vehicle simulation driving test platform and system, including a test bench and a test device arranged above the test bench; the test device includes an instrument panel system, a combination instrument, a steering wheel, a steering column, a shift knob, an accelerator pedal, a brake pedal, and a driver's seat; the instrument panel system is arranged on the test bench via an instrument panel fixing frame; the driver's seat faces the direction of the instrument panel system and is arranged on the test bench via a seat fixing bracket; the steering wheel is connected to the instrument panel system via a steering column and is arranged next to the driver's seat; the shift knob is connected to the instrument panel system; the accelerator pedal is arranged on the test bench via an accelerator pedal bracket; the brake pedal is arranged on the test bench via a brake pedal bracket; the combination instrument is arranged on the instrument panel system, which can effectively detect the performance of the vehicle's electronic control system.

[0004] The above patent collects electrical signals for detection during actual use. However, due to the complexity and diversity of new energy vehicles, subtle faults or hidden problems may not be fully exposed through electrical signal collection, which may easily lead to inaccurate battery performance analysis of new energy vehicles and affect the normal driving of new energy vehicles. Therefore, it does not meet the existing needs. In this regard, we propose a bidirectional DC power supply for new energy vehicle testing based on data processing and analysis. Summary of the invention

[0005] The purpose of the present invention is to provide a bidirectional DC power supply for testing new energy vehicles based on data processing and analysis, which can improve the accuracy and credibility of voltage data and current data, and can provide stable output under various working conditions. The bidirectional DC power supply can simulate the charging and discharging characteristics of various types of batteries with high accuracy, ensure the accuracy of the test results, detect subtle fault codes as well as potential fault codes and abnormal conditions, maximize the safety performance of the test link, ensure that new energy vehicles can be warned in time when the control parameters are abnormal, and prevent the fault from further expanding, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a bidirectional DC power supply for testing new energy vehicles based on data processing and analysis, comprising: The data acquisition module is used to obtain and classify the physical quantities of the electric field and current characteristics of the motor controller and the battery management system in the new energy vehicle, pre-process the classified data, and obtain the control parameters of the motor controller and the battery management system in the new energy vehicle; A conversion module, used for eliminating ripples in the processed voltage data and current data by using a capacitor and then converting them into a bidirectional DC power supply through a rectifier; An analysis and detection module is used to detect and analyze battery data, motor controller parameters and environmental adaptability in a battery management system using a bidirectional DC power supply; The protection warning module is used to adjust the battery working state according to the analysis results during the charging and discharging process, diagnose battery failures and send out alarm signals, and cut off the charging and discharging protection switch at the same time.

[0007] Preferably, the data acquisition module includes: The voltage and current data acquisition module is used to obtain the physical quantities of the electric field and current characteristics in the motor controller and battery management system of new energy vehicles, and classify the obtained physical quantities according to voltage data and current data; The control parameter acquisition module is used to obtain the control parameters of the motor controller and battery management system in new energy vehicles. The control parameters include: voltage, current, power and operating temperature. Preferably, the data acquisition module further includes: The preprocessing module is used to clean, deduplicate, format and normalize the voltage data and the current data, and remove invalid or missing values ​​of the voltage data and the current data.

[0008] Preferably, the preprocessing module specifically includes: Clean, deduplicate, and format the collected voltage and current data, use regular expressions to filter invalid logs, and use outlier detection algorithms to remove noise data; The voltage data and current data are decoded by data dimension reduction technology, key features are extracted, and the voltage data and current data are normalized to obtain normalized voltage data and current data; Imputation, whole case deletion, variable deletion and pairwise deletion are used to deal with invalid and missing values ​​in voltage and current data.

[0009] Preferably, the conversion module comprises: The capacitor is used to eliminate the ripples in the voltage data and the current data to obtain the stable DC voltage data and the current data; The voltage data and the current data are adjusted by a DC-DC converter and converted into a bidirectional DC power supply.

[0010] Preferably, the analysis and detection module comprises: A battery data analysis module is used to analyze the battery data in the battery management system using a bidirectional DC power supply and evaluate the battery usage based on the analysis results; A control parameter analysis module is used to detect and analyze the motor controller parameters using a bidirectional DC power supply; The environmental adaptability analysis module is used to evaluate and analyze the performance of new energy motors under different temperature and humidity conditions using a bidirectional DC power supply.

[0011] Preferably, the control parameter analysis module includes: Use a bidirectional DC power supply to detect the control parameters of a new energy vehicle, and connect the bidirectional DC power supply to a motor controller of the new energy vehicle and a motor to be tested; Set the output voltage, current and waveform of the bidirectional DC power supply, simulate the dynamic conditions of acceleration and braking through the bidirectional DC power supply, quickly switch the current direction, adjust the current size, and evaluate the controller performance; Real-time monitoring of key parameters of the motor controller, such as voltage, current, power, etc., and recording performance indicators; Collect the key parameters of the motor controller, analyze the collected data, evaluate the status of the motor controller under different working conditions, obtain the parameter detection results of the motor controller, and provide a basis for optimization and adjustment.

[0012] Preferably, the battery data analysis module specifically includes: ‌Battery charge and discharge performance analysis module, which is used to simulate the battery charge and discharge conditions under actual working conditions using a bidirectional DC power supply, and analyze the changes in battery voltage, current, resistance and temperature based on the simulation results; The battery safety performance analysis module is used to use a bidirectional DC power supply to simulate the actual working state of the battery and test whether the battery will have overheating, overcharging and short circuit problems during use. In this way, the safety performance of the battery is evaluated according to the working state of the battery; The battery life analysis module evaluates the battery life based on the battery charge and discharge performance analysis results and the battery safety performance test results.

[0013] Preferably, the method of simulating battery charging and discharging using a bidirectional DC power supply specifically includes: According to the battery characteristics of new energy vehicles, the output voltage and current capacity of the bidirectional DC power supply are set; Connect the bidirectional DC power supply to the battery and the load to form a charge-discharge loop. When discharging, set the power supply output to positive current, and the battery releases electrical energy to the load or the grid. When charging, the power supply output is set to negative current to transfer electrical energy to the battery. The monitoring function of the bidirectional DC power supply is used to observe the battery charging and discharging status in real time, and the power supply output is adjusted as needed to realize the simulation of battery charging and discharging using the bidirectional DC power supply.

[0014] Preferably, the protection warning module includes: Set the warning threshold. During the charging and discharging process, when the analysis results show that the changes in battery voltage, current, resistance and temperature are close to the warning threshold, the power is cut off or the battery working state is adjusted; During the charge and discharge process, when the analysis results show that the changes in battery voltage, current, resistance and temperature exceed the warning threshold, the battery fault is diagnosed and an alarm signal is issued, and the charge and discharge protection switch is cut off at the same time.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention can improve the effectiveness and accuracy of decisions made based on the data by preprocessing the voltage data to ensure the high quality of the data, and reduce the impact of low-quality data on data analysis. By filtering invalid data and redundant data, it can reduce the resources wasted in storing, processing and analyzing the data, thereby optimizing resource utilization, ensuring the accuracy and reliability of data analysis, providing stable output under various working conditions, detecting subtle fault codes as well as potential fault codes and abnormal conditions, ensuring the accuracy of test results, meeting different test conditions, and ensuring comprehensive performance testing of electric vehicles under a variety of environments and conditions. Using a bidirectional DC power supply for testing can maximize the safety performance of the test link. At the same time, the power supply has a long service life and can perform long-term performance testing. Through the test results of the bidirectional DC power supply, the battery management system can be optimized, the battery utilization efficiency and lifespan can be improved, and energy waste and space occupancy can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a bidirectional DC power supply module for testing new energy vehicles based on data processing and analysis of the present invention; Figure 2 The diagram is a method for using a bidirectional DC power supply for testing new energy vehicles based on data processing and analysis according to the present invention. DETAILED DESCRIPTION

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

[0018] In order to solve the problem that the existing technology collects electrical signals for detection during actual use, but due to the complexity and diversity of new energy vehicles, subtle faults or hidden problems may not be fully exposed through electrical signal collection, which may easily lead to inaccurate battery performance analysis of new energy vehicles and affect the normal driving of new energy vehicles, please refer to Figure 1-Figure 2 , this embodiment provides the following technical solutions: Bidirectional DC power supply for new energy vehicle testing based on data processing and analysis, including: The data acquisition module is used to obtain and classify the physical quantities of the electric field and current characteristics of the motor controller and the battery management system in the new energy vehicle, pre-process the classified data, and obtain the control parameters of the motor controller and the battery management system in the new energy vehicle; A conversion module, used for eliminating ripples in the processed voltage data and current data by using a capacitor and then converting them into a bidirectional DC power supply through a rectifier; An analysis and detection module is used to detect and analyze battery data, motor controller parameters and environmental adaptability in a battery management system using a bidirectional DC power supply; The protection warning module is used to adjust the battery working state according to the analysis results during the charging and discharging process, diagnose battery failures and send out alarm signals, and cut off the charging and discharging protection switch at the same time.

[0019] The data acquisition module also includes: The preprocessing module is used to clean, deduplicate, format and normalize the voltage data and the current data, and remove invalid or missing values ​​of the voltage data and the current data.

[0020] Preprocessing module, including: Clean, deduplicate, and format the collected voltage and current data, use regular expressions to filter invalid logs, and use outlier detection algorithms to remove noise data; The voltage data and current data are decoded by data dimension reduction technology, key features are extracted, and the voltage data and current data are normalized to obtain normalized voltage data and current data; Imputation, whole case deletion, variable deletion and pairwise deletion are used to deal with invalid and missing values ​​in voltage and current data.

[0021] By cleaning, errors, missing values, duplicate values ​​and outliers in the data can be eliminated, thereby improving the accuracy and credibility of voltage and current data and avoiding decision-making errors caused by dirty data. The outlier detection algorithm is used to analyze the voltage and current data, identify the noise data, and remove the identified noise data from the original data set, thereby improving the quality of voltage and current data and the accuracy of analysis; There may be some invalid values ​​and missing values ​​in the acquired voltage and current data, which need to be properly processed; the commonly used processing methods are: estimation, whole case deletion, variable deletion and pairwise deletion; Among them, estimation is to replace invalid values ​​and missing values ​​with the sample mean, median or mode of a variable. This method is simple, but it does not fully consider the existing information in the voltage data and current data, and the error may be large; Among them, the whole case deletion is to remove samples with missing values. Since many voltage data and current data may have missing values, this approach may result in a significant reduction in the effective sample size and fail to fully utilize the collected data. Therefore, it is only suitable for situations where key variables are missing or the proportion of samples with invalid or missing values ​​is very small; Among them, variable deletion means that if a variable has many invalid values ​​and missing values, and the variable is not particularly important for the research problem, then the variable can be considered to be deleted; this approach reduces the number of variables for analysis, but does not change the sample size; Among them, pairwise deletion uses a special code to represent invalid values ​​and missing values, while retaining all variables and samples in the data set.

[0022] Data acquisition module, including: The voltage and current data acquisition module is used to obtain the physical quantities of the electric field and current characteristics in the motor controller and battery management system of new energy vehicles, and classify the obtained physical quantities according to voltage data and current data; The control parameter acquisition module is used to obtain the control parameters of the motor controller and battery management system in new energy vehicles. The control parameters include: voltage, current, power and operating temperature.

[0023] Conversion modules, including: The capacitor is used to eliminate the ripples in the voltage data and the current data to obtain the stable DC voltage data and the current data; The voltage data and the current data are adjusted by a DC-DC converter and converted into a bidirectional DC power supply.

[0024] By converting voltage data and current data into a bidirectional DC power supply, bidirectional flow of energy is achieved. The bidirectional DC power supply has stable and reliable output characteristics and can provide precise and stable voltage and current output, making the electronic control detection results of new energy vehicles more accurate. At the same time, the bidirectional DC power supply has the characteristics of fast response and high-precision control, which can meet the needs of electronic equipment for rapid changes and high-precision control of power supply. When the battery fails, it can respond quickly to protect the battery's working performance.

[0025] Analysis and detection module, including: A battery data analysis module is used to analyze the battery data in the battery management system using a bidirectional DC power supply and evaluate the battery usage based on the analysis results; Meet different test conditions, ensure a comprehensive understanding of the battery's performance under different working conditions, maximize the accuracy of the test, simulate the battery's actual use status, eliminate the potential safety hazards when using real batteries, ensure the safety and reliability of the test process, and effectively use the bidirectional DC power supply to analyze the life of new energy vehicle batteries, optimize the battery management system, and improve the battery's efficiency and life; A control parameter analysis module is used to detect and analyze the motor controller parameters using a bidirectional DC power supply; Environmental adaptability analysis module, used to evaluate and analyze the performance of new energy motors under different temperature and humidity conditions using a bidirectional DC power supply; Control parameter analysis module, including: Use a bidirectional DC power supply to detect the control parameters of new energy vehicles. Connect the bidirectional DC power supply to the motor controller of the new energy vehicle and the motor under test to ensure a safe and stable test process.

[0026] Set the output voltage, current and waveform of the bidirectional DC power supply, simulate the dynamic conditions of acceleration and braking through the bidirectional DC power supply, quickly switch the current direction, adjust the current size, and evaluate the controller performance; Real-time monitoring of key parameters of the motor controller, such as voltage, current, power, etc., and recording performance indicators; Collect the key parameters of the motor controller, analyze the collected data, evaluate the status of the motor controller under different working conditions, obtain the parameter detection results of the motor controller, and provide a basis for optimization and adjustment.

[0027] Battery data analysis module, including: ‌Battery charge and discharge performance analysis module, which is used to simulate the battery charge and discharge conditions under actual working conditions using a bidirectional DC power supply, and analyze the changes in battery voltage, current, resistance and temperature based on the simulation results; By using a bidirectional DC power supply, the battery charging and discharging conditions under actual working conditions can be simulated, so as to comprehensively evaluate the battery charging speed and discharge efficiency. This can help detect the performance of the battery under different charging and discharging conditions, and then evaluate the overall performance and life of the battery. The battery safety performance analysis module is used to use a bidirectional DC power supply to simulate the actual working state of the battery and test whether the battery will have overheating, overcharging and short circuit problems during use. In this way, the safety performance of the battery is evaluated according to the working state of the battery; The bidirectional DC power supply can simulate the working state of the battery under actual working conditions, and test whether the battery will have problems such as overheating, overcharging, short circuit, etc. during use. It can comprehensively evaluate the safety performance of the battery and ensure the safety of the battery during use; Battery life analysis module, which evaluates the battery life based on the battery charge and discharge performance analysis results and battery safety performance test results; The use of a bidirectional DC power supply can simulate the working state of the battery under actual working conditions, so as to comprehensively evaluate the battery life performance. It can help detect the performance degradation of the battery after a certain period of use, and then evaluate the overall life of the battery. The bidirectional DC power supply can achieve efficient power conversion and control, improve the efficiency of battery charging and discharging, and has multiple protection functions such as overvoltage protection, overcurrent protection, and overtemperature protection. It can effectively avoid safety hazards of the battery during use. It can record the data and waveforms of the charging and discharging process in real time, which is convenient for users to analyze and trace data. It can achieve efficient power conversion and control and reduce energy waste.

[0028] Use a bidirectional DC power supply to simulate battery charging and discharging, including: According to the battery characteristics of new energy vehicles, the output voltage and current capacity of the bidirectional DC power supply are set; Connect the bidirectional DC power supply to the battery and the load to form a charge-discharge loop. When discharging, set the power supply output to positive current, and the battery releases electrical energy to the load or the grid. When charging, the power supply output is set to negative current to transfer electrical energy to the battery. The monitoring function of the bidirectional DC power supply is used to observe the battery charging and discharging status in real time, and the power supply output is adjusted as needed. The bidirectional DC power supply is used to simulate battery charging and discharging, ensuring the safety and efficiency of the charging and discharging process. The battery charging and discharging behavior can be accurately simulated, providing strong support for the research and development and optimization of battery management systems.

[0029] Protection early warning module, including: Set the warning threshold. During the charging and discharging process, when the analysis results show that the changes in battery voltage, current, resistance and temperature are close to the warning threshold, the power is cut off or the battery working state is adjusted; During the charge and discharge process, when the analysis results show that the changes in battery voltage, current, resistance and temperature exceed the warning threshold, the battery fault is diagnosed and an alarm signal is issued, and the charge and discharge protection switch is cut off at the same time.

[0030] To ensure that new energy vehicles can issue timely warnings when control parameters are abnormal and prevent faults from further expanding, a bidirectional DC power supply is used to simulate various operating conditions of the battery in actual use, including constant current charging, constant voltage charging and discharging, to evaluate the performance and life of the battery under different conditions.

[0031] The bidirectional DC power supply can simulate the charging and discharging characteristics of various types of batteries with high accuracy, including different voltage, current, internal resistance and other parameters, to ensure the accuracy of the test results. The bidirectional DC power supply has a variety of different output modes such as constant voltage, constant current and constant power, which can meet different test conditions and ensure comprehensive performance testing of electric vehicles in a variety of environments and conditions. Using a bidirectional DC power supply for testing can maximize the safety performance of the test link. At the same time, this type of power supply has a long service life and can perform long-term performance testing. Through the test results of the bidirectional DC power supply, the battery management system can be optimized, the battery efficiency and life can be improved, and energy waste and space occupancy can be reduced.

[0032] Working principle: When using the bidirectional DC power supply for testing new energy vehicles based on data processing and analysis of the present invention, according to Figure 1 and Figure 2 , including the following steps: Step 1: Obtain and classify the physical quantities of the electric field and current characteristics of the motor controller and the battery management system in the new energy vehicle, and obtain the control parameters of the motor controller and the battery management system in the new energy vehicle; Step 2: Clean, deduplicate, format and normalize the voltage and current data to remove invalid or missing values ​​of the voltage and current data; Step 3: Using a capacitor to eliminate ripples in the processed voltage data and current data, and then converting them into a bidirectional DC power supply through a rectifier; Step 4: Use a bidirectional DC power supply to analyze the battery data in the battery management system, evaluate the battery usage based on the analysis results, detect and analyze the motor controller parameters, and evaluate and analyze the performance of the new energy motor under different temperature and humidity conditions; Step 5: When the analysis result shows that the changes in battery voltage, current, resistance and temperature are close to the warning threshold, the power is cut off or the battery working state is adjusted; Step 6: When the analysis results show that the changes in battery voltage, current, resistance and temperature exceed the warning threshold, the battery fault is diagnosed and an alarm signal is issued, and the charge and discharge protection switch is cut off at the same time.

[0033] In summary, the bidirectional DC power supply for testing new energy vehicles based on data processing and analysis of the present invention can improve the effectiveness and accuracy of decisions made based on these data by preprocessing voltage data to ensure high data quality, while reducing the impact of low-quality data on data analysis. By filtering invalid data and redundant data, it can reduce the resources wasted in storing, processing and analyzing these data, thereby optimizing resource utilization and ensuring the accuracy and reliability of data analysis. The bidirectional DC power supply has the characteristics of high efficiency, high reliability and long life, and can provide stable output under various working conditions. The bidirectional DC power supply can highly accurately simulate the charging and discharging characteristics of various types of batteries, including different voltages, currents, internal resistances and other parameters to ensure the accuracy of the test results. The bidirectional DC power supply has a variety of different output modes such as constant voltage, constant current and constant power, which can meet different test conditions and ensure comprehensive performance testing of electric vehicles under various environments and conditions. Using a bidirectional DC power supply for testing can maximize the safety performance of the test link. At the same time, the service life of this power supply is long, and long-term performance testing can be performed. Through the test results of the bidirectional DC power supply, the battery management system can be optimized, the battery efficiency and life can be improved, and energy waste and space occupancy can be reduced.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0035] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A bidirectional DC power supply for testing new energy vehicles based on data processing and analysis, characterized in that: include: The data acquisition module is used to obtain and classify the physical quantities of the electric field and current characteristics of the motor controller and the battery management system in the new energy vehicle, pre-process the classified data, and obtain the control parameters of the motor controller and the battery management system in the new energy vehicle; A conversion module, used for eliminating ripples in the processed voltage data and current data by using a capacitor and then converting them into a bidirectional DC power supply through a rectifier; An analysis and detection module is used to detect and analyze battery data, motor controller parameters and environmental adaptability in a battery management system using a bidirectional DC power supply; The protection warning module is used to adjust the battery working state according to the analysis results during the charging and discharging process, diagnose battery failures and send out alarm signals, and cut off the charging and discharging protection switch at the same time.

2. The bidirectional DC power supply for testing new energy vehicles based on data processing and analysis according to claim 1, characterized in that: The data acquisition module comprises: The voltage and current data acquisition module is used to obtain the physical quantities of the electric field and current characteristics in the motor controller and battery management system of new energy vehicles, and classify the obtained physical quantities according to voltage data and current data; The control parameter acquisition module is used to obtain the control parameters of the motor controller and battery management system in new energy vehicles. The control parameters include: voltage, current, power and operating temperature.

3. The bidirectional DC power supply for testing new energy vehicles based on data processing and analysis according to claim 2, characterized in that: The data acquisition module further includes: The preprocessing module is used to clean, deduplicate, format and normalize the voltage data and the current data, and remove invalid or missing values ​​of the voltage data and the current data.

4. The bidirectional DC power supply for testing new energy vehicles based on data processing and analysis according to claim 3 is characterized in that: The preprocessing module specifically includes: Clean, deduplicate, and format the collected voltage and current data, use regular expressions to filter invalid logs, and use outlier detection algorithms to remove noise data; The voltage data and current data are decoded by data dimension reduction technology, key features are extracted, and the voltage data and current data are normalized to obtain normalized voltage data and current data; Imputation, whole case deletion, variable deletion and pairwise deletion are used to deal with invalid and missing values ​​in voltage and current data.

5. The bidirectional DC power supply for testing new energy vehicles based on data processing and analysis according to claim 1, characterized in that: The conversion module comprises: The capacitor is used to eliminate the ripples in the voltage data and the current data to obtain the stable DC voltage data and the current data; The voltage data and the current data are adjusted by a DC-DC converter and converted into a bidirectional DC power supply.

6. The bidirectional DC power supply for testing new energy vehicles based on data processing and analysis according to claim 1, characterized in that: The analysis and detection module comprises: A battery data analysis module is used to analyze the battery data in the battery management system using a bidirectional DC power supply and evaluate the battery usage based on the analysis results; A control parameter analysis module is used to detect and analyze the motor controller parameters using a bidirectional DC power supply; The environmental adaptability analysis module is used to evaluate and analyze the performance of new energy motors under different temperature and humidity conditions using a bidirectional DC power supply.

7. The bidirectional DC power supply for testing new energy vehicles based on data processing and analysis according to claim 6, characterized in that: The control parameter analysis module comprises: Use a bidirectional DC power supply to detect the control parameters of a new energy vehicle, and connect the bidirectional DC power supply to a motor controller of the new energy vehicle and a motor to be tested; Set the output voltage, current and waveform of the bidirectional DC power supply, simulate the dynamic conditions of acceleration and braking through the bidirectional DC power supply, quickly switch the current direction, adjust the current size, and evaluate the controller performance; Monitor key parameters of motor controller in real time and record performance indicators; Collect the key parameters of the motor controller, analyze the collected data, evaluate the status of the motor controller under different working conditions, obtain the parameter detection results of the motor controller, and provide a basis for optimization and adjustment.

8. The bidirectional DC power supply for testing new energy vehicles based on data processing and analysis according to claim 6, characterized in that: The battery data analysis module specifically includes: The battery charge and discharge performance analysis module is used to simulate the battery charge and discharge conditions under actual working conditions using a bidirectional DC power supply, and analyze the changes in battery voltage, current, resistance and temperature based on the simulation results; The battery safety performance analysis module is used to simulate the working state of the battery under actual working conditions using a bidirectional DC power supply, test whether the battery will overheat, overcharge, or short-circuit during use, and evaluate the safety performance of the battery according to the working state of the battery; The battery life analysis module evaluates the battery life based on the battery charge and discharge performance analysis results and the battery safety performance test results.

9. The bidirectional DC power supply for testing new energy vehicles based on data processing and analysis according to claim 8, characterized in that: The method of simulating battery charging and discharging by using a bidirectional DC power supply specifically includes: According to the battery characteristics of new energy vehicles, the output voltage and current capacity of the bidirectional DC power supply are set; Connect the bidirectional DC power supply to the battery and the load to form a charge-discharge loop. When discharging, set the power supply output to positive current, and the battery releases electrical energy to the load or the grid. When charging, the power supply output is set to negative current to transfer electrical energy to the battery. The monitoring function of the bidirectional DC power supply is used to observe the battery charging and discharging status in real time, and the power supply output is adjusted as needed to realize the simulation of battery charging and discharging using the bidirectional DC power supply.

10. The bidirectional DC power supply for testing new energy vehicles based on data processing and analysis according to claim 1, characterized in that: The protection warning module comprises: Set the warning threshold. During the charging and discharging process, when the analysis results show that the changes in battery voltage, current, resistance and temperature are close to the warning threshold, the power is cut off or the battery working state is adjusted; During the charge and discharge process, when the analysis results show that the changes in battery voltage, current, resistance and temperature exceed the warning threshold, the battery fault is diagnosed and an alarm signal is issued, and the charge and discharge protection switch is cut off at the same time.

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