Monitoring, managing and repairing system and method for transformer substation storage battery

Abstract

The invention relates to the technical field of storage battery repair, and particularly discloses a monitoring management repair system and method for a transformer substation storage battery, and the system comprises a data collection module which is used for collecting internal resistance data of different storage batteries in a storage battery pack, the first loss coefficients and the second loss coefficients of the battery capacities of different storage batteries are calculated regularly through the data calculation unit, and the loss amounts of the battery capacities of the different storage batteries are analyzed through the data analysis module, so that the electric quantity storage states of the different storage batteries can be judged. The activation and repair module is used for performing activation and repair treatment on the storage batteries with relatively large battery capacity loss in time, so that the situation that the storage batteries cannot be repaired due to relatively large battery capacity loss cannot be found in time is avoided; the single batteries in the storage battery pack are flexibly activated, so that the overall service life of the storage battery pack is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of battery repair, and in particular to a monitoring, management and repair system and method for substation batteries. Background Art

[0002] A battery pack refers to two or more single batteries that are electrically connected and used as energy. A battery pack is an independent and reliable power source that is not affected by the AC power supply. When any accident occurs in a power plant or substation, or even when the AC power supply of the entire plant or station is cut off, it can still ensure that the electrical equipment in the DC system can work reliably and continuously with a stable voltage.

[0003] During the long-term use of a battery pack, the active materials in the electrodes of the single cells in the battery pack will gradually lose their electrochemical activity, resulting in a decrease in the battery capacity. In order to extend the battery life and maintain the battery capacity, the battery is usually activated at a fixed time, thereby repairing the secondary rechargeable batteries with degraded or failed performance, restoring the battery capacity, reducing the internal resistance, and improving the battery's charge and discharge efficiency and service life.

[0004] In the prior art, activation treatment of battery packs is usually carried out regularly according to a preset cycle. However, different single cells in the battery pack have different states during use and are subject to different external influences, so the loss of battery capacity of different single cells may also be different. If regular activation treatment is carried out according to the preset time, some batteries may lose a large amount of capacity and cannot be repaired, thereby affecting the overall service life of the battery pack. Summary of the invention

[0005] The purpose of the present invention is to provide a monitoring, management and repair system and method for substation batteries to solve the following technical problems:

[0006] How to flexibly repair the single cells in the battery pack to ensure the overall service life of the battery pack.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A monitoring, management and repair system and method for substation batteries, the system comprising:

[0009] A data acquisition module is used to collect internal resistance data of different batteries in the battery pack;

[0010] Data recording module, used to record the historical operation data of the battery;

[0011] A data processing module, comprising a data calculation unit and a data processing unit, wherein the data calculation unit is used to calculate a first loss coefficient and a second loss coefficient of battery capacity of different storage batteries according to information from the data acquisition module and the data recording module;

[0012] The data analysis unit is used to judge the loss of battery capacity of different batteries in combination with a preset loss coefficient threshold, and decide whether charge-discharge activation repair is needed according to the judgment result;

[0013] The activation repair module is used to perform charge and discharge activation treatment on a battery when it is determined that a battery needs to be charged and discharged for activation repair.

[0014] Furthermore, the information recorded by the data recording module includes the actual use time, preset service life, number of maintenance, actual discharge time, and preset discharge time of different batteries in the battery pack.

[0015] Furthermore, the calculation process of the data calculation unit includes:

[0016] By formula Calculate the first loss coefficient A of the battery capacity of the i-th battery in the battery pack i ;

[0017] Where i is any battery in the battery pack, a is any discharge process in the past period of time, b is the total number of discharges in the past period of time, and fd x The preset discharge time of the battery, sj ai is the discharge time of the ath discharge process of the i-th battery in the battery pack, For all The average value of g is the proportionality coefficient, which is set according to empirical fitting. For all sj ai The minimum value in .

[0018] Furthermore, the analysis process of the data analysis unit includes:

[0019] By subtracting the first loss coefficient A of the battery capacity of all batteries in the battery group i and the preset loss coefficient threshold δ x Make a comparison;

[0020] If any A i Greater than δ x The system determines that the battery capacity loss of the battery is large, indicating that the current battery capacity of the battery is lower than the factory capacity, and the battery needs to be charged and discharged through the activation and repair module to perform activation and repair processing;

[0021] If all Ai All less than δ x The system determines that the loss of battery capacity of all batteries is small, indicating that the current battery capacity of all batteries in the battery pack is at a good level and does not need to be repaired. The system calculates the second loss coefficient through the data calculation unit and makes further judgments.

[0022] Furthermore, the calculation process of the data calculation unit also includes:

[0023] By formula Calculate the second loss coefficient B of the battery capacity of the i-th battery in the battery pack i ;

[0024] Among them, dz i is the internal resistance of the i-th battery in the battery pack at the current charge level, dz x is the preset internal resistance of the battery at the current power level, sc i is the actual usage time of the ith battery in the battery pack, sm is the preset service life of the battery, θ is the error influence function, which is set according to the empirical data fitting, and wx i is the number of maintenance times of the ith battery in the battery pack, wx 01 For wx i is the standard value of , and x1 and x2 are weight coefficients.

[0025] Furthermore, the analysis process of the data analysis unit also includes:

[0026] By subtracting the second loss coefficient B of the battery capacity of all batteries in the battery group i and the preset loss coefficient threshold δ x Make a comparison;

[0027] If any B i Greater than δ x , the system determines that the battery capacity loss of the battery is large, indicating that the current battery capacity of the battery is low, and the battery needs to be charged and discharged through the activation and repair module to perform activation and repair processing;

[0028] If all A i All less than δ x , the system determines that the loss of battery capacity of all batteries is small, indicating that the current battery capacity of all batteries in the battery pack is at a good level and does not need to be repaired.

[0029] Furthermore, the activation and repair module includes a CPU board, a diode, an input end and an output end. The input end can be connected to any battery in the battery pack, and the output end is connected to the battery to be activated and repaired.

[0030] A monitoring, management and repair method for a substation battery, the method comprising:

[0031] S1: Collect the internal resistance data of different batteries in the battery pack through the data acquisition module, and record the historical operation data of the battery through the data recording module;

[0032] S2: Calculating and obtaining a first loss coefficient of the battery capacity of the i-th battery in the battery pack by a data calculation unit;

[0033] S3: The data analysis unit combines the preset loss coefficient threshold with the first loss coefficient of the battery capacity of the i-th battery to determine whether different batteries need to be charged and discharged for activation and repair. If yes, proceed to step S6; otherwise, proceed to step S4;

[0034] S4: Calculating and obtaining a second loss coefficient of the battery capacity of the i-th battery in the battery pack by a data calculation unit;

[0035] S5: The data analysis unit combines the preset loss coefficient threshold with the second loss coefficient of the battery capacity of the i-th battery to determine whether different batteries need to be charged and discharged for activation and repair. If yes, proceed to step S6; otherwise, no processing is performed.

[0036] S6: The activation and repair module performs charge and discharge activation treatment on the battery that needs to be charged and discharged.

[0037] Beneficial effects of the present invention:

[0038] (1) The present invention periodically calculates the first loss coefficient and the second loss coefficient of the battery capacity of different batteries through a data calculation unit, and analyzes the loss amount of the battery capacity of different batteries through a data analysis module, so as to judge the power storage status of different batteries, and timely activate and repair the batteries with large battery capacity loss through an activation and repair module, thereby avoiding the situation where some batteries cannot be repaired due to large battery capacity loss due to failure to timely discover, and realizing flexible activation of single cells in the battery pack to ensure the overall service life of the battery pack.

[0039] (2) The present invention calculates the first loss coefficient A of the battery capacity of all batteries in the battery pack. i and the preset loss coefficient threshold δ xBy making a comparison, an accurate judgment can be made on the amount of battery capacity loss of the battery based on the comparison result, and when it is judged that the battery capacity loss of a certain battery is large, the activation and repair module can be used to promptly perform charge and discharge activation and repair treatment on it. By setting it in this way, it is only necessary to regularly calculate and compare the first loss coefficient of the battery capacity of the battery, so as to promptly discover the battery capacity loss of the battery and perform repairs in time, thereby realizing flexible repair of the single cells in the battery pack to ensure the overall service life of the battery pack.

[0040] (3) The present invention calculates the second loss coefficient B of the battery capacity of all batteries in the battery pack. i and the preset loss coefficient threshold δ x By making a comparison, the amount of battery capacity loss of the battery can be further judged, thereby improving the accuracy of the judgment result. Through such a setting, it is only necessary to periodically calculate the second loss coefficient of the battery capacity of the battery and analyze and compare the data, so as to timely discover the battery capacity loss of the battery and repair it in time, thereby realizing flexible repair of the single battery in the battery pack to ensure the overall service life of the battery pack.

[0041] (4) The present invention can improve the accuracy of judging the battery capacity loss of all batteries in the battery group by combining the first loss coefficient and the second loss coefficient of the battery capacity of the ith battery in the battery group. Therefore, when the system is in use, by regularly calculating, analyzing and comparing the first loss coefficient and the second loss coefficient of the battery capacity of the battery, the battery with a large battery capacity loss can be discovered in time and repaired in time. In addition, any battery in the battery group can be monitored separately, thereby improving the flexibility and practicality of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present invention will be further described below in conjunction with the accompanying drawings.

[0043] Figure 1 It is a schematic block diagram of a monitoring, management and repair system for substation batteries in the present invention;

[0044] Figure 2 It is a flow chart of a monitoring, management and repair method for substation batteries in the present invention;

[0045] Figure 3 It is a schematic diagram of the activation repair module in the present invention. DETAILED DESCRIPTION

[0046] 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.

[0047] See also Figure 1 As shown, in one embodiment, the present application provides a monitoring, management and repair system and method for substation batteries, the system comprising:

[0048] A data acquisition module is used to collect internal resistance data of different batteries in the battery pack;

[0049] Data recording module, used to record the historical operation data of the battery;

[0050] A data processing module, comprising a data calculation unit and a data processing unit, wherein the data calculation unit is used to calculate a first loss coefficient and a second loss coefficient of battery capacity of different storage batteries according to information from the data acquisition module and the data recording module;

[0051] The data analysis unit is used to judge the loss of battery capacity of different batteries in combination with a preset loss coefficient threshold, and decide whether charge-discharge activation repair is needed according to the judgment result;

[0052] The activation and repair module is used to perform charge and discharge activation treatment on a battery when it is determined that a battery needs to be charged and discharged for activation and repair;

[0053] Through the above technical solution, this embodiment provides a data acquisition module and a data recording module. The data acquisition module can collect the internal resistance data of different batteries in the battery pack, and the data recording module can record the historical operation data of the battery. When the system is used, the data calculation unit in the data processing module can calculate the first loss coefficient and the second loss coefficient of the battery capacity of different batteries according to the data provided by the data acquisition module and the data recording module, and the data analysis module in the data processing module can be combined with the preset loss coefficient threshold to judge the loss amount of the battery capacity of different batteries, and decide whether to perform charge and discharge activation repair according to the judgment result;

[0054] By regularly calculating the first loss coefficient and the second loss coefficient of the battery capacity of different batteries through the data calculation unit, and analyzing the loss amounts of the battery capacity of different batteries through the data analysis module, the power storage status of different batteries can be judged, and the batteries with large battery capacity loss can be activated and repaired in time through the activation and repair module, thereby avoiding the situation where some batteries cannot be repaired due to large battery capacity loss due to failure to timely discover, and realizing flexible activation of single cells in the battery pack to ensure the overall service life of the battery pack.

[0055] The information recorded by the data recording module includes the actual use time, the preset service life, the number of maintenance times, the actual discharge time, and the preset discharge time of different batteries in the battery pack;

[0056] Through the above technical scheme, the data recording module in this embodiment provides historical operating data of different batteries in the battery pack, including actual usage time, preset service life, number of maintenance times, actual discharge time, and preset discharge time. Through such a setting, accurate data can be provided for the subsequent data calculation module to calculate the first loss coefficient and the second loss coefficient of the battery capacity of the battery, thereby improving the accuracy of the calculation results, and further improving the accuracy and reliability of the subsequent judgment of the amount of battery capacity loss of the battery.

[0057] The calculation process of the data calculation unit includes:

[0058] By formula Calculate the first loss coefficient A of the battery capacity of the i-th battery in the battery pack i ;

[0059] Where i is any battery in the battery pack, a is any discharge process in the past period of time, b is the total number of discharges in the past period of time, and fd x The preset discharge time of the battery, sj ai is the discharge time of the ath discharge process of the i-th battery in the battery pack, For all The average value of g is the proportionality coefficient, which is set according to empirical fitting. For all sj ai The minimum value in ;

[0060] Through the above technical solution, this embodiment provides a first loss coefficient A of the battery capacity of the i-th battery in the battery pack: i , can be obtained by formula It is calculated that, obviously, if during the multiple discharge processes over a period of time, the discharge time of the ith battery each time gradually decreases, then the first loss coefficient of the battery capacity of the ith battery in the battery pack will be larger, indicating that the battery capacity of the battery is gradually decreasing; conversely, during the multiple discharge processes over a period of time, the discharge time of the ith battery each time does not decrease, then the first loss coefficient of the battery capacity of the ith battery in the battery pack will be smaller, indicating that the battery capacity of the battery has not changed significantly. By setting it in this way, a preliminary judgment can be made on the change in the battery capacity of the battery according to the size of the first loss coefficient of the battery capacity of the ith battery in the battery pack, and when it is judged that the battery capacity of the battery is gradually decreasing, the battery can be repaired in time through the activation and repair module.

[0061] The analysis process of the data analysis unit includes:

[0062] By subtracting the first loss coefficient A of the battery capacity of all batteries in the battery group i and the preset loss coefficient threshold δ x Make a comparison;

[0063] If any A i Greater than δ x The system determines that the battery capacity loss of the battery is large, indicating that the current battery capacity of the battery is lower than the factory capacity, and the battery needs to be charged and discharged through the activation and repair module to perform activation and repair processing;

[0064] If all A i All less than δ x , the system determines that the loss of battery capacity of all batteries is small, indicating that the current battery capacity of all batteries in the battery pack is at a good level and does not need to be repaired, and calculates the second loss coefficient through the data calculation unit and further determines;

[0065] Through the above technical solution, this embodiment calculates the first loss coefficient A of the battery capacity of all batteries in the battery pack. i and the preset loss coefficient threshold δ x By making a comparison, an accurate judgment can be made on the amount of battery capacity loss of the battery according to the comparison result, and when it is judged that the battery capacity loss of a certain battery is large, the activation and repair module can be used to perform charge and discharge activation and repair processing on it in time. By setting it in this way, it is only necessary to calculate and compare the first loss coefficient of the battery capacity of the battery regularly, so as to timely discover the battery capacity loss of the battery and perform repair in time, thereby realizing flexible repair of the single battery in the battery pack to ensure the overall service life of the battery pack;

[0066] It should be noted that the above preset loss coefficient threshold δ x It can be set based on experience fitting.

[0067] The calculation process of the data calculation unit also includes:

[0068] By formula Calculate the second loss coefficient B of the battery capacity of the i-th battery in the battery pack i ;

[0069] Among them, dz i is the internal resistance of the i-th battery in the battery pack at the current charge level, dz x is the preset internal resistance of the battery at the current power level, sc i is the actual usage time of the ith battery in the battery pack, sm is the preset service life of the battery, θ is the error influence function, which is set according to the empirical data fitting, and wx i is the number of maintenance times of the ith battery in the battery pack, wx 01 For wx i The standard value of , which can be set according to the allowable error fitting in the empirical data, x1 and x2 are weight coefficients, which can be set according to empirical fitting;

[0070] Through the above technical solution, this embodiment provides a second loss coefficient B of the battery capacity of the i-th battery in the battery pack: i , can be obtained by formula It is calculated that, obviously, when the internal resistance and actual use time of the i-th battery in the battery pack at the current power are greater, and the number of times the i-th battery is repaired is more, then the second loss coefficient of the battery capacity of the battery is greater. That is because when the internal resistance is too large, more battery energy will be consumed, and there will be greater energy loss during discharge, resulting in reduced discharge efficiency, thereby accelerating the attenuation of battery capacity. The longer the actual use time of the battery is, the more serious its aging is. The structure and chemical reaction inside the battery will gradually change, causing the battery capacity to decay. Therefore, when the internal resistance and actual use time of the i-th battery in the battery pack at the current power are smaller, and the number of times the i-th battery is repaired is less, then the second loss coefficient of the battery capacity of the battery is smaller.

[0071] By setting in this way, the second loss coefficient B of the battery capacity of the i-th battery in the battery pack is i The amount of battery capacity loss can be accurately judged. When it is judged that the battery capacity of the battery is gradually decreasing, the battery can be repaired in time through the activation and repair module to avoid the situation where the battery capacity loss is large and cannot be repaired, thereby improving the overall service life of the battery pack.

[0072] The analysis process of the data analysis unit also includes:

[0073] By subtracting the second loss coefficient B of the battery capacity of all batteries in the battery group i and the preset loss coefficient threshold δ x Make a comparison;

[0074] If any B i Greater than δ x , the system determines that the battery capacity loss of the battery is large, indicating that the current battery capacity of the battery is low, and the battery needs to be charged and discharged through the activation and repair module to perform activation and repair processing;

[0075] If all A i All less than δ x , the system determines that the loss of battery capacity of all batteries is small, indicating that the current battery capacity of all batteries in the battery pack is at a good level and does not need to be repaired;

[0076] Through the above technical solution, this embodiment calculates the second loss coefficient B of the battery capacity of all batteries in the battery pack. i and the preset loss coefficient threshold δ x By making a comparison, the amount of battery capacity loss of the battery can be further judged, thereby improving the accuracy of the judgment result. Through such a setting, it is only necessary to periodically calculate the second loss coefficient of the battery capacity of the battery and analyze and compare the data, so as to timely discover the battery capacity loss of the battery and repair it in time, thereby realizing flexible repair of the single battery in the battery pack to ensure the overall service life of the battery pack.

[0077] See also Figure 3 As shown, the activation and repair module includes a CPU board, a diode, an input end and an output end, wherein the input end can be connected to any battery in the battery pack, and the output end is connected to the battery to be activated and repaired;

[0078] Through the above technical solution, when the battery needs to be charged and discharged for activation and repair, by connecting the output end to any charged battery in the battery pack, and connecting the output end to the battery to be activated and repaired, the charge and discharge activation and repair process can be controlled by the CPU board, thereby restoring the battery capacity, reducing the internal resistance, and improving the battery's charge and discharge efficiency and service life.

[0079] See also Figure 2 As shown, a monitoring, management and repair method for a substation battery, the method comprising:

[0080] S1: Collect the internal resistance data of different batteries in the battery pack through the data acquisition module, and record the historical operation data of the battery through the data recording module;

[0081] S2: Calculating and obtaining a first loss coefficient of the battery capacity of the i-th battery in the battery pack by a data calculation unit;

[0082] S3: The data analysis unit combines the preset loss coefficient threshold with the first loss coefficient of the battery capacity of the i-th battery to determine whether different batteries need to be charged and discharged for activation and repair. If yes, proceed to step S6; otherwise, proceed to step S4;

[0083] S4: Calculating and obtaining a second loss coefficient of the battery capacity of the i-th battery in the battery pack by a data calculation unit;

[0084] S5: The data analysis unit combines the preset loss coefficient threshold with the second loss coefficient of the battery capacity of the i-th battery to determine whether different batteries need to be charged and discharged for activation and repair. If yes, proceed to step S6; otherwise, no processing is performed.

[0085] S6: Performing charge-discharge activation treatment on the battery that needs to be charged and discharged for activation repair through the activation repair module;

[0086] Through the above technical solution, when the method of this embodiment is used, the internal resistance data of different batteries in the battery pack are first collected by the data collection module, and the historical operation data of the battery is recorded by the data recording module, and then the first loss coefficient A of the battery capacity of the i-th battery in the battery pack is calculated by the data calculation unit. i , and then the data analysis unit combines the preset loss coefficient threshold with the first loss coefficient A of the battery capacity of the i-th battery i , judge whether different batteries need to be charged and discharged for activation and repair. When it is judged that the i-th battery needs to be repaired, the battery is charged and discharged for activation and repair by the activation and repair module. When it is judged that the i-th battery does not need to be repaired, the second loss coefficient B of the battery capacity of the i-th battery in the battery pack is calculated by the data calculation unit. i , and the data analysis unit combines the preset loss coefficient threshold with the second loss coefficient B of the battery capacity of the i-th battery i , judge whether different batteries need to be charged and discharged for activation and repair. When it is judged that the i-th battery needs to be repaired, the battery is charged and discharged for activation and repair through the activation and repair module. When it is judged that the i-th battery does not need to be repaired, no treatment is performed;

[0087] Through such an arrangement, by combining the first loss coefficient and the second loss coefficient of the battery capacity of the ith battery in the battery pack, the accuracy of judging the battery capacity loss of all batteries in the battery pack can be improved. Therefore, when the system is in use, by regularly calculating and analyzing the first loss coefficient and the second loss coefficient of the battery capacity of the battery, the battery with a large battery capacity loss can be discovered in time and repaired in time, and any battery in the battery pack can be monitored separately, thereby improving the flexibility and practicality of the system.

[0088] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A monitoring, management and repair system for substation batteries, characterized in that: The system comprises: A data acquisition module, used to collect internal resistance data of different batteries in the battery pack; Data recording module, used to record the historical operation data of the battery; A data processing module, comprising a data calculation unit and a data processing unit, wherein the data calculation unit is used to calculate a first loss coefficient and a second loss coefficient of battery capacity of different batteries according to information from the data acquisition module and the data recording module; The data analysis unit is used to judge the loss of battery capacity of different batteries in combination with a preset loss coefficient threshold, and decide whether charge-discharge activation repair is needed according to the judgment result; The activation repair module is used to perform charge and discharge activation treatment on a battery when it is determined that a battery needs to be charged and discharged for activation repair.

2. A monitoring, management and repair system for substation batteries according to claim 1, characterized in that: The information recorded by the data recording module includes the actual use time, preset service life, number of maintenance, actual discharge time, and preset discharge time of different batteries in the battery pack.

3. A monitoring, management and repair system for substation batteries according to claim 1, characterized in that: The calculation process of the data calculation unit includes: By formula Calculate the first loss coefficient A of the battery capacity of the i-th battery in the battery pack i ; Where i is any battery in the battery pack, a is any discharge process in the past period of time, b is the total number of discharges in the past period of time, and fd x The preset discharge time of the battery, sj ai is the discharge time of the ath discharge process of the i-th battery in the battery pack, For all The average value of g is the proportionality coefficient, which is set according to empirical fitting. For all sj ai The minimum value in .

4. A monitoring, management and repair system for substation batteries according to claim 3, characterized in that: The analysis process of the data analysis unit includes: By calculating the first loss coefficient a of the battery capacity of all batteries in the battery group i and the preset loss coefficient threshold δ x Make a comparison; If any A i Greater than δ x The system determines that the battery capacity loss of the battery is large, indicating that the current battery capacity of the battery is lower than the factory capacity, and the battery needs to be charged and discharged through the activation and repair module to perform activation and repair processing; If all A i All less than δ x The system determines that the loss of battery capacity of all batteries is small, indicating that the current battery capacity of all batteries in the battery pack is at a good level and does not need to be repaired. The system calculates the second loss coefficient through the data calculation unit and makes further judgments.

5. A monitoring, management and repair system for substation batteries according to claim 4, characterized in that: The calculation process of the data calculation unit also includes: By formula Calculate the second loss coefficient B of the battery capacity of the i-th battery in the battery pack i ; Among them, dz i is the internal resistance of the i-th battery in the battery pack at the current charge level, dz x is the preset internal resistance of the battery at the current power level, sc i is the actual usage time of the ith battery in the battery pack, sm is the preset service life of the battery, θ is the error influence function, which is set according to the empirical data fitting, and wx i is the number of maintenance times of the ith battery in the battery pack, wx 01 For wx i is the standard value of , and x1 and x2 are weight coefficients.

6. A monitoring, management and repair system for substation batteries according to claim 5, characterized in that: The analysis process of the data analysis unit also includes: By subtracting the second loss coefficient B of the battery capacity of all batteries in the battery group i and the preset loss coefficient threshold δ x Make a comparison; If any B i Greater than δ x , the system determines that the battery capacity loss of the battery is large, indicating that the current battery capacity of the battery is low, and the battery needs to be charged and discharged through the activation and repair module to perform activation and repair processing; If all A i All less than δ x , the system determines that the loss of battery capacity of all batteries is small, indicating that the current battery capacity of all batteries in the battery pack is at a good level and does not need to be repaired.

7. A monitoring, management and repair system for substation batteries according to claim 6, characterized in that: The activation and repair module includes a CPU board, a diode, an input end and an output end. The input end can be connected to any battery in the battery pack, and the output end is connected to the battery to be activated and repaired.

8. A monitoring, management and repair method for substation batteries, characterized in that: The method adopts a monitoring, management and repair system for substation batteries as described in claims 1-7, and the method comprises: S1: Collect the internal resistance data of different batteries in the battery pack through the data acquisition module, and record the historical operation data of the battery through the data recording module; S2: Calculating and obtaining a first loss coefficient of the battery capacity of the i-th battery in the battery pack by a data calculation unit; S3: The data analysis unit combines the preset loss coefficient threshold with the first loss coefficient of the battery capacity of the i-th battery to determine whether different batteries need to be charged and discharged for activation and repair. If yes, proceed to step S6; otherwise, proceed to step S4; S4: Calculating and obtaining a second loss coefficient of the battery capacity of the i-th battery in the battery pack by a data calculation unit; S5: The data analysis unit combines the preset loss coefficient threshold with the second loss coefficient of the battery capacity of the i-th battery to determine whether different batteries need to be charged and discharged for activation and repair. If yes, proceed to step S6; otherwise, no processing is performed. S6: The activation and repair module performs charge and discharge activation treatment on the battery that needs to be charged and discharged.

Images