Power test system for electric energy storage equipment

Abstract

The invention relates to the technical field of electric energy storage, and provides an electric energy storage equipment power test system, which comprises a test power supply, a load unit, a data acquisition module, a processing system module and a test unit, and is characterized in that the test power supply, the load unit, the data acquisition module, the processing system module and the test unit are sequentially in signal connection; the test power supply provides stable and controllable power input, integrates a high-precision test assembly and an intelligent processing module, significantly improves the test accuracy and efficiency, can flexibly simulate various actual power supply and load conditions, ensures that the test environment is close to a real application scene, and improves the test accuracy and efficiency through real-time data acquisition and detailed data analysis. According to the technical scheme, the system provides a comprehensive view of the performance of the energy storage equipment for the user, the problem can be quickly positioned, the equipment design can be optimized, the overall performance of the energy storage equipment can be effectively improved, and the problem of low test efficiency in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electric energy storage, and in particular to a power testing system for electric energy storage equipment. Background Art

[0002] At present, the power test system of electric energy storage equipment is a comprehensive test system specially used to evaluate the power performance of electric energy storage equipment (such as batteries, supercapacitors, etc.).

[0003] The limitations of existing power test systems for electric energy storage devices are becoming increasingly prominent in the face of the rapid development of modern energy storage technology. First, the singleness of the test function has become a significant shortcoming. Traditional test systems are often limited to basic power tests, but are unable to evaluate key performance parameters such as efficiency, cycle life, and temperature adaptability. This makes it difficult for users to obtain comprehensive performance data for energy storage devices and cannot provide strong support for the optimization and use of equipment. Secondly, the lack of test accuracy is also a major drawback of existing technologies. Limited by the level of sensors and data acquisition technology, existing technologies often have errors when measuring key parameters such as voltage and current, affecting the accuracy of test results. Such inaccurate data not only cannot truly reflect the performance of energy storage devices, but may also mislead users' decisions. Summary of the invention

[0004] The present invention provides a power test system for electric energy storage equipment, which solves the problem of low test efficiency in related technologies.

[0005] The technical solution of the present invention is as follows: A power test system for an electric energy storage device comprises a test power supply, a load unit, a data acquisition module, a processing system module and a test unit, wherein the test power supply, the load unit, the data acquisition module, the processing system module and the test unit are sequentially signal-connected; The test power supply: provides stable and controllable power input to simulate various power supply conditions in actual use; The load unit is used to simulate various load conditions in actual use; The data acquisition module: monitors and records the voltage, current, power and other parameters of the energy storage device in real time through high-precision sensors and data acquisition cards; The processing system module is used to process and analyze the collected data; The test unit is used to test the power of the electric energy storage device.

[0006] As a preferred solution of the present invention, the test power supply is composed of a voltage source module, a current source module, a programmable control module, a power protection module, a monitoring module and a communication interface module; The voltage source module is responsible for generating a stable voltage output to simulate various voltage conditions in actual use; The current source module provides a controllable current output to simulate various current load conditions in actual use. The programmable control module is responsible for controlling the output of the voltage source and current source modules and performing programming settings according to test requirements; The power protection module is used to cut off the power supply when data is abnormal. The monitoring module is used to monitor the output data parameters of the test power supply in real time; The communication interface module provides a communication interface with other test instruments or control systems to achieve data exchange and remote control.

[0007] As a preferred solution of the present invention, the load unit is composed of a resistive load array module, an inductive load array module, a capacitive load array module, a main control module, a power regulation module and a safety protection module; The resistive load array module provides loads of different resistance values ​​to simulate resistive load conditions in actual use. By adjusting the resistance value of the load, different current and voltage conditions can be simulated to evaluate the performance of the energy storage device under different loads. The inductive load array module provides a load with inductive characteristics to simulate the inductive load conditions in actual use. The inductive load will produce a phase difference in the circuit. By adjusting the parameters of the inductive load array, different phase angles and frequency responses can be simulated to evaluate the performance of the energy storage device under complex load conditions. The capacitive reactance load array module provides a load with capacitive characteristics to simulate the capacitive load conditions in actual use. The capacitive load will also produce a phase difference in the circuit, which is opposite to the inductive load. By adjusting the parameters of the capacitive reactance load array, the simulation range of the load unit can be further expanded to improve the comprehensiveness of the test. The main control module is responsible for controlling the switching and parameter adjustment of the impedance load array, the inductive load array and / or the capacitive load array in the load module. The main control module receives instructions from the control software to accurately control the working state of each load array to achieve accurate simulation of the actual load conditions. The power regulation module: The power regulation unit can accurately control the load power according to the test requirements to simulate more complex load conditions; The safety protection module ensures the safety of the load unit during the test, prevents equipment damage or safety accidents caused by overload, short circuit, etc., and can quickly cut off the load connection under abnormal circumstances to protect the safety of the test equipment and energy storage equipment.

[0008] As a preferred solution of the present invention, the data acquisition module is composed of a sensor module, a signal conditioning module, a data acquisition card module, a computer system module and a software system module; The sensor module: The sensor module is the front end of the data acquisition system and is responsible for converting the measured physical quantity into an electrical signal to ensure the accuracy of the measured data; The signal conditioning module: The signal conditioning module amplifies, filters, and linearizes the electrical signal output by the sensor. Through signal conditioning, noise and interference in the signal can be eliminated, the signal-to-noise ratio and stability of the signal can be improved, and the accuracy of data acquisition can be ensured; The data acquisition card module: The data acquisition card module is a hardware device that connects the sensor and the computer. It is responsible for converting the conditioned analog signal into a digital signal and storing and processing the data. The data acquisition card module includes analog input channels, analog output channels, digital input / output channels, and counters / timers. It has the characteristics of high sampling rate, high resolution, and multi-channel simultaneous acquisition to meet different test requirements; The computer system module: The computer system module is the core processing unit of the data acquisition system, responsible for storing, processing and analyzing the collected data. The computer system module includes the hardware resources of CPU, large-capacity memory and hard disk, as well as the software resources of operating system, database and data processing software to support complex data processing and analysis tasks; The software system module is responsible for realizing the data collection, processing, storage and display functions.

[0009] As a preferred solution of the present invention, the processing system module includes a data preprocessing module, a data analysis module, a data storage module, a user interface module and a report generation module; The data preprocessing module performs preliminary processing on the raw data collected by the data acquisition system to ensure the effectiveness and accuracy of subsequent data analysis and reduce analysis errors caused by data quality issues; The data analysis module: performs in-depth analysis on the pre-processed data, calculates the statistical characteristics of parameters such as voltage, current, power, and performs trend analysis, spectrum analysis, etc., to help users understand the performance of energy storage equipment under different working conditions; The data storage module stores the processed data in a database or file for subsequent query, analysis and report generation, using data storage technologies of relational databases, non-relational databases and distributed file systems to ensure data security and accessibility; The user interface module provides a user-friendly interface, enabling users to conveniently set test parameters, start / stop tests, monitor test data in real time, view analysis results, and generate test reports; The report generation module automatically generates a standardized test report based on user needs and data analysis results, which includes the test purpose, test method, test data, analysis results and conclusions to help users fully understand the performance of the energy storage device.

[0010] As a preferred solution of the present invention, the test unit is composed of a power test module, an efficiency test module, a cycle life test module, a temperature test module, an overcharge protection module and an over-discharge protection module; The power test module: By adjusting the load characteristics of the load unit, various load conditions in actual use are simulated. At the same time, the voltage and current parameters of the energy storage device are monitored in real time using high-precision sensors and data acquisition cards, and its power output is calculated. By comparing and analyzing the power output data under different load conditions, the power output capacity of the energy storage device can be fully understood. The formula is: P = V × I Where: P is power; V is voltage; I is current; The efficiency test module: The efficiency test includes two aspects: charging efficiency and discharging efficiency. In the charging efficiency test, the charging efficiency is calculated by measuring the input electric energy and the electric energy stored in the energy storage device. In the discharging efficiency test, the discharging efficiency is calculated by measuring the electric energy released by the energy storage device and the output electric energy. The efficiency test helps to evaluate the energy loss of the energy storage device during the energy conversion process and provides a basis for optimizing the performance of the device. The calculation formulas for the charging efficiency and the discharging efficiency are as follows: charging efficiency = (electric energy stored in the energy storage device / input electric energy) × 100%, discharging efficiency = (output electric energy / electric energy released by the energy storage device) × 100%; The cycle life test module: by simulating the charge and discharge cycle process in actual use, and recording the changes in the charge and discharge capacity and internal resistance parameters of each cycle, by analyzing these data, the cycle life of the energy storage device can be predicted, and guidance can be provided for its maintenance and use; The temperature test module: by testing the energy storage device under different temperature conditions, it is possible to understand the law of its performance changing with temperature. The temperature test usually includes measuring the change of the charging and discharging capacity, internal resistance, and efficiency parameters of the energy storage device under different temperatures, and evaluating the performance of its thermal management system; The overcharge protection module and the over-discharge protection module: During the test, by manually setting overcharge or over-discharge conditions, observe whether the energy storage device can respond in time and cut off the power supply or take other protective measures. At the same time, it is also necessary to evaluate the impact of the protection measures on the performance of the device.

[0011] The working principle and beneficial effects of the present invention are: The present invention integrates high-precision test components and intelligent processing modules, which significantly improves the accuracy and efficiency of the test. The system can flexibly simulate various actual power and load conditions to ensure that the test environment is close to the actual application scenario. Through real-time data collection and detailed data analysis, the system provides users with a comprehensive view of the performance of energy storage equipment, which helps to quickly locate problems and optimize equipment design, thereby effectively improving the overall performance of the energy storage equipment.

[0012] 2. The system of the present invention also has a wealth of test function modules, including cycle life test, temperature adaptability assessment and safety protection test. These functions enable the system to conduct a more in-depth and comprehensive assessment of energy storage equipment. By accurately measuring and analyzing the performance of the equipment under different conditions, the system provides users with detailed and reliable data support, which helps users better understand equipment performance, predict equipment life, and ensure the safe and stable operation of the equipment under various extreme conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0014] Figure 1 It is a flow chart of the system of the present invention; Figure 2 A flow chart of the power supply system for testing the present invention; Figure 3 is a flow chart of the load unit system of the present invention; Figure 4 This is a flow chart of the data acquisition module system of the present invention; Figure 5 This is a system flow chart of the processing system module of the present invention.

[0015] In the figure: 1. Test power supply; 11. Voltage source module; 12. Current source module; 13. Programmable control module; 14. Power protection module; 15. Monitoring module; 16. Communication interface module; 2. Load unit; 21. Impedance load array module; 22. Inductive load array module; 23. Capacitive load array module; 24. Main control module; 25. Power regulation module; 26. Safety protection module; 3. Data acquisition module; 31. Sensor module; 32. Signal conditioning module; 33. Data acquisition card module; 34. Computer system module; 35. Software system module; 4. Processing system module; 41. Data preprocessing module; 42. Data analysis module; 43. Data storage module; 44. User interface module; 45. Report generation module; 5. Test unit; 41. Power test module; 52. Efficiency test module; 53. Cycle life test module; 54. Temperature test module; 55. Overcharge protection module; 56. Over-discharge protection module. DETAILED DESCRIPTION

[0016] The following will be combined with 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.

[0017] Example: A power test system for an electric energy storage device comprises a test power supply 1, a load unit 2, a data acquisition module 3, a processing system module 4 and a test unit 5, wherein the test power supply 1, the load unit 2, the data acquisition module 3, the processing system module 4 and the test unit 5 are sequentially connected by signals; Test power supply 1: Provides stable and controllable power input to simulate various power supply conditions in actual use; Load unit 2: simulates various load conditions in actual use; Data acquisition module 3: Real-time monitoring and recording of voltage, current, power and other parameters of energy storage equipment through high-precision sensors and data acquisition cards; Processing system module 4: perform data processing and analysis on the collected data; Test unit 5: used to test the power of the electric energy storage device.

[0018] In this embodiment, the test power supply 1 is composed of a voltage source module 11, a current source module 12, a programmable control module 13, a power protection module 14, a monitoring module 15 and a communication interface module 16; Voltage source module 11: responsible for generating a stable voltage output to simulate various voltage conditions in actual use; Current source module 12: provides controllable current output to simulate various current load conditions in actual use; Programmable control module 13: responsible for controlling the output of the voltage source and current source module 12, and performing programming settings according to test requirements; Power supply protection module 14: to cut off the power supply for protection when data is abnormal; Monitoring module 15: real-time monitoring of the output data parameters of the test power supply 1; Communication interface module 16: provides a communication interface with other test instruments or control systems to achieve data exchange and remote control.

[0019] Specifically, the load unit 2 is composed of a resistive load array module 21, an inductive load array module 22, a capacitive load array module 23, a main control module 24, a power regulation module 25 and a safety protection module 26; Resistive load array module 21: provides loads with different resistance values ​​to simulate resistive load conditions in actual use. By adjusting the resistance value of the load, different current and voltage conditions can be simulated to evaluate the performance of the energy storage device under different loads; Inductive load array module 22: provides a load with inductive characteristics to simulate the inductive load conditions in actual use. The inductive load will produce a phase difference in the circuit. By adjusting the parameters of the inductive load array, different phase angles and frequency responses can be simulated to evaluate the performance of the energy storage device under complex load conditions; Capacitive reactance load array module 23: provides a load with capacitive characteristics to simulate the capacitive load conditions in actual use. The capacitive load will also produce a phase difference in the circuit, which is opposite to the inductive load. By adjusting the parameters of the capacitive reactance load array, the simulation range of the load unit 2 can be further expanded to improve the comprehensiveness of the test; Main control module 24: responsible for controlling the switching and parameter adjustment of the impedance load array, inductive load array and / or capacitive load array in the load module. The main control module 24 receives instructions from the control software to accurately control the working state of each load array to achieve accurate simulation of actual load conditions; Power regulation module 25: The power regulation unit can accurately control the load power according to the test requirements to simulate more complex load conditions; Safety protection module 26: ensures the safety of the load unit 2 during the test process, prevents equipment damage or safety accidents caused by overload, short circuit, etc., and can quickly cut off the load connection under abnormal circumstances to protect the safety of the test equipment and energy storage equipment.

[0020] In this embodiment, the data acquisition module 3 is composed of a sensor module 31, a signal conditioning module 32, a data acquisition card module 33, a computer system module 34 and a software system module 35; Sensor module 31: The sensor module 31 is the front end of the data acquisition system and is responsible for converting the measured physical quantity into an electrical signal to ensure the accuracy of the measured data; Signal conditioning module 32: The signal conditioning module 32 amplifies, filters, and linearizes the electrical signal output by the sensor. Through signal conditioning, noise and interference in the signal can be eliminated, the signal-to-noise ratio and stability of the signal can be improved, and the accuracy of data collection can be ensured; Data acquisition card module 33: Data acquisition card module 33 is a hardware device that connects the sensor and the computer. It is responsible for converting the conditioned analog signal into a digital signal and storing and processing the data. The data acquisition card module 33 includes analog input channels, analog output channels, digital input / output channels, and counters / timers. It has the characteristics of high sampling rate, high resolution, and multi-channel simultaneous acquisition to meet different test requirements; Computer system module 34: Computer system module 34 is the core processing unit of the data acquisition system, responsible for storing, processing and analyzing the collected data. Computer system module 34 includes hardware resources such as CPU, large-capacity memory and hard disk, as well as software resources such as operating system, database and data processing software to support complex data processing and analysis tasks; Software system module 35: responsible for realizing data collection, processing, storage and display functions.

[0021] Specifically, the processing system module 4 includes a data preprocessing module 41, a data analysis module 42, a data storage module 43, a user interface module 44 and a report generation module 45; Data preprocessing module 41: preliminarily processes the raw data collected by the data acquisition system to ensure the effectiveness and accuracy of subsequent data analysis and reduce analysis errors caused by data quality issues; Data analysis module 42: performs in-depth analysis on the pre-processed data, calculates the statistical characteristics of parameters such as voltage, current, power, and performs trend analysis, spectrum analysis, etc., to help users understand the performance of energy storage equipment under different working conditions; Data storage module 43: stores the processed data in a database or file for subsequent query, analysis and report generation, using data storage technologies of relational database, non-relational database and distributed file system to ensure data security and accessibility; User interface module 44: provides a friendly user interface, enabling the user to conveniently set test parameters, start / stop test, monitor test data in real time, view analysis results and generate test reports; Report generation module 45: According to user requirements and data analysis results, a standardized test report is automatically generated, which includes the test purpose, test method, test data, analysis results and conclusion content to help users fully understand the performance of the energy storage device.

[0022] In this embodiment, the test unit 5 is composed of a power test module 41, an efficiency test module 52, a cycle life test module 53, a temperature test module 54, an overcharge protection module 55 and an over-discharge protection module 56; Power test module 41: By adjusting the load characteristics of load unit 2, various load conditions in actual use are simulated. At the same time, high-precision sensors and data acquisition cards are used to monitor the voltage and current parameters of the energy storage device in real time, and its power output is calculated. By comparing and analyzing the power output data under different load conditions, the power output capacity of the energy storage device can be fully understood. The formula is: P=V×I Where: P is power (unit: watt, W); V is voltage (unit: volt, V); I is current (unit: ampere, A); Efficiency test module 52: The efficiency test includes two aspects: charging efficiency and discharging efficiency. In the charging efficiency test, the charging efficiency is calculated by measuring the input electric energy and the electric energy stored in the energy storage device. In the discharging efficiency test, the discharging efficiency is calculated by measuring the electric energy released by the energy storage device and the output electric energy. The efficiency test helps to evaluate the energy loss of the energy storage device during the energy conversion process and provides a basis for optimizing the performance of the device. The calculation formulas for the charging efficiency and the discharging efficiency are as follows: charging efficiency = (electric energy stored in the energy storage device / input electric energy) × 100%, discharging efficiency = (output electric energy / electric energy released by the energy storage device) × 100%; Cycle life test module 53: By simulating the charge and discharge cycle process in actual use and recording the changes in the charge and discharge capacity and internal resistance parameters of each cycle, the cycle life of the energy storage device can be predicted by analyzing these data, and guidance can be provided for its maintenance and use; Temperature test module 54: by testing the energy storage device under different temperature conditions, it is possible to understand how its performance changes with temperature. The temperature test usually includes measuring the changes in the charging and discharging capacity, internal resistance, and efficiency parameters of the energy storage device under different temperatures, and evaluating the performance of its thermal management system; Overcharge protection module 55 and over-discharge protection module 56: During the test, by manually setting overcharge or over-discharge conditions, observe whether the energy storage device can respond in time and cut off the power supply or take other protective measures. At the same time, it is also necessary to evaluate the impact of the protection measures on the performance of the device.

[0023] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A power test system for an electric energy storage device, characterized in that: The device comprises a test power supply (1), a load unit (2), a data acquisition module (3), a processing system module (4) and a test unit (5), wherein the test power supply (1), the load unit (2), the data acquisition module (3), the processing system module (4) and the test unit (5) are sequentially signal-connected; The test power supply (1) provides stable and controllable power input to simulate various power supply conditions in actual use; The load unit (2) is used to simulate various load conditions in actual use; The data acquisition module (3) monitors and records the voltage, current, power and other parameters of the energy storage device in real time through high-precision sensors and data acquisition cards; The processing system module (4) is used to process and analyze the collected data; The test unit (5) is used to test the power of the electric energy storage device.

2. The power test system of an electric energy storage device according to claim 1, characterized in that: The test power supply (1) is composed of a voltage source module (11), a current source module (12), a programmable control module (13), a power protection module (14), a monitoring module (15) and a communication interface module (16); The voltage source module (11) is responsible for generating a stable voltage output to simulate various voltage conditions in actual use; The current source module (12) provides a controllable current output to simulate various current load conditions in actual use; The programmable control module (13) is responsible for controlling the output of the voltage source and current source modules (12) and performing programming settings according to test requirements; The power supply protection module (14) is used to cut off the power supply when data abnormality occurs; The monitoring module (15) is configured to monitor the output data parameters of the test power supply (1) in real time; The communication interface module (16) provides a communication interface with other test instruments or control systems to achieve data exchange and remote control.

3. The power test system of an electric energy storage device according to claim 2, characterized in that: The load unit (2) is composed of a resistive load array module (21), an inductive load array module (22), a capacitive load array module (23), a main control module (24), a power regulation module (25) and a safety protection module (26); The resistive load array module (21) provides loads of different resistance values ​​to simulate resistive load conditions in actual use. By adjusting the resistance value of the load, different current and voltage conditions can be simulated, thereby evaluating the performance of the energy storage device under different loads. The inductive load array module (22) provides a load with inductive characteristics to simulate the inductive load conditions in actual use. The inductive load will produce a phase difference in the circuit. By adjusting the parameters of the inductive load array, different phase angles and frequency responses can be simulated to evaluate the performance of the energy storage device under complex load conditions. The capacitive reactance load array module (23) provides a load with capacitive characteristics to simulate the capacitive load conditions in actual use. The capacitive load will also produce a phase difference in the circuit, which is opposite to the inductive load. By adjusting the parameters of the capacitive reactance load array, the simulation range of the load unit (2) can be further expanded to improve the comprehensiveness of the test. The main control module (24) is responsible for controlling the switching and parameter adjustment of the impedance load array, the inductive load array and / or the capacitive load array in the load module. The main control module (24) receives instructions from the control software to accurately control the working state of each load array, so as to achieve accurate simulation of actual load conditions. The power regulation module (25): the power regulation unit can accurately control the load power according to the test requirements to simulate more complex load conditions; The safety protection module (26) ensures the safety of the load unit (2) during the test process, prevents equipment damage or safety accidents caused by overload, short circuit, etc., and can quickly cut off the load connection under abnormal circumstances to protect the safety of the test equipment and energy storage equipment.

4. The power test system of an electric energy storage device according to claim 3, characterized in that: The data acquisition module (3) is composed of a sensor module (31), a signal conditioning module (32), a data acquisition card module (33), a computer system module (34) and a software system module (35); The sensor module (31): the sensor module (31) is the front end of the data acquisition system and is responsible for converting the measured physical quantity into an electrical signal to ensure the accuracy of the measured data; The signal conditioning module (32): the signal conditioning module (32) amplifies, filters, and linearizes the electrical signal output by the sensor. Through signal conditioning, noise and interference in the signal can be eliminated, the signal-to-noise ratio and stability of the signal can be improved, and the accuracy of data collection can be ensured; The data acquisition card module (33): the data acquisition card module (33) is a hardware device that connects the sensor and the computer, and is responsible for converting the conditioned analog signal into a digital signal, and storing and processing the data. The data acquisition card module (33) includes an analog input channel, an analog output channel, a digital input / output channel, and a counter / timer, and has the characteristics of high sampling rate, high resolution, and multi-channel simultaneous acquisition to meet different test requirements; The computer system module (34): The computer system module (34) is the core processing unit of the data acquisition system, responsible for storing, processing and analyzing the collected data. The computer system module (34) includes hardware resources such as a CPU, a large-capacity memory and a hard disk, and software resources such as an operating system, a database, and data processing software to support complex data processing and analysis tasks; The software system module (35) is responsible for realizing the functions of data collection, processing, storage and display.

5. The power test system of an electric energy storage device according to claim 4, characterized in that: The processing system module (4) comprises a data preprocessing module (41), a data analysis module (42), a data storage module (43), a user interface module (44) and a report generation module (45); The data preprocessing module (41) performs preliminary processing on the raw data collected by the data acquisition system to ensure the effectiveness and accuracy of subsequent data analysis and reduce analysis errors caused by data quality issues; The data analysis module (42) performs in-depth analysis on the pre-processed data, calculates the statistical characteristics of parameters such as voltage, current, power, etc., and performs trend analysis, spectrum analysis, etc., to help users understand the performance of the energy storage device under different working conditions; The data storage module (43) stores the processed data in a database or file for subsequent query, analysis and report generation, using data storage technologies of relational databases, non-relational databases and distributed file systems to ensure data security and accessibility; The user interface module (44) provides a user-friendly interface, enabling the user to conveniently set test parameters, start / stop the test, monitor the test data in real time, view the analysis results and generate a test report; The report generation module (45) automatically generates a standardized test report based on user requirements and data analysis results, which includes test purpose, test method, test data, analysis results and conclusions to help users fully understand the performance of the energy storage device.

6. The power test system for electric energy storage equipment according to claim 5, characterized in that: The test unit (5) is composed of a power test module (41), an efficiency test module (52), a cycle life test module (53), a temperature test module (54), an overcharge protection module (55) and an over-discharge protection module (56); The power test module (41) simulates various load conditions in actual use by adjusting the load characteristics of the load unit (2). At the same time, it uses a high-precision sensor and a data acquisition card to monitor the voltage and current parameters of the energy storage device in real time and calculate its power output. By comparing and analyzing the power output data under different load conditions, the power output capacity of the energy storage device can be fully understood. The formula is: P = V × I Where: P is power (unit: watt, W); V is voltage (unit: volt, V); I is current (unit: ampere, A); The efficiency test module (52): the efficiency test includes two aspects: charging efficiency and discharging efficiency. In the charging efficiency test, the charging efficiency is calculated by measuring the input electric energy and the electric energy stored by the energy storage device. In the discharging efficiency test, the discharging efficiency is calculated by measuring the electric energy released by the energy storage device and the output electric energy. The efficiency test helps to evaluate the energy loss of the energy storage device during the energy conversion process and provides a basis for optimizing the performance of the device. The calculation formulas for the charging efficiency and the discharging efficiency are as follows: charging efficiency = (electric energy stored in the energy storage device / input electric energy) × 100%, discharging efficiency = (output electric energy / electric energy released by the energy storage device) × 100%; The cycle life test module (53) simulates the charge and discharge cycle process in actual use and records the changes in the charge and discharge capacity and internal resistance parameters of each cycle. By analyzing these data, the cycle life of the energy storage device can be predicted and guidance can be provided for its maintenance and use; The temperature test module (54) is used to test the energy storage device under different temperature conditions to understand how its performance changes with temperature. The temperature test usually includes measuring the changes in the charging and discharging capacity, internal resistance, and efficiency parameters of the energy storage device under different temperatures, and evaluating the performance of its thermal management system. The overcharge protection module (55) and the over-discharge protection module (56): during the test, by artificially setting overcharge or over-discharge conditions, observe whether the energy storage device can respond in time and cut off the power supply or take other protective measures. At the same time, it is also necessary to evaluate the impact of the protection measures on the performance of the device.

Images