Repair and maintenance devices and intelligent logic control methods for UPS power supply batteries

Abstract

This invention discloses a UPS power supply battery repair and maintenance device and intelligent logic control method. The device includes a data processing module, at least one battery desulfurization module, a local display panel, and a backend server. The data processing module includes a central processing unit, a battery pack acquisition circuit, an intelligent electric switch assembly, a charging and discharging circuit, an uplink communication circuit, and a downlink communication circuit. The battery pack acquisition circuit collects relevant data from the battery pack. The intelligent electric switch assembly controls the battery pack to connect to or disconnect from the DC bus for charging and discharging. The charging and discharging circuit charges and discharges the connected battery pack. The central processing unit aggregates, analyzes, uploads, receives instructions, and controls the battery desulfurization module and the intelligent electric switch assembly. The uplink communication circuit communicates with the local display panel and the backend server, and the downlink communication circuit communicates with the battery desulfurization module. This invention enables intelligent logic control for battery repair and maintenance.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to a device for repairing and maintaining UPS power supply batteries and an intelligent logic control method. Background Technology

[0002] Lead-acid batteries have outstanding advantages such as mature technology, large single-cell capacity, low price, and high safety, and are widely used in many fields, including power, communications, railways, subways, and IT networks. Valve-regulated lead-acid batteries (VRLA batteries) have been widely used since the 1990s due to their "maintenance-free" characteristics and have now become the mainstream choice for DC power supplies in substations in my country. The design life of VRLA batteries for substations is 10-12 years (2V) and 5-8 years (12V), but due to product quality differences, insufficient maintenance personnel, improper maintenance, and misuse, the actual operating life is generally 5-7 years (2V) and 2-3 years (12V).

[0003] Currently, a large number of lead-acid batteries are discarded once they reach the end of their service life, causing environmental pollution and significant energy waste. Data shows that over 50 million lead-acid batteries discarded in my country each year could be repaired and reused. In fact, these returned batteries still have considerable remaining capacity; if repaired, they can be reused, thus improving battery utilization, reducing recycling frequency, and consequently decreasing environmental pollution. This has positive economic and social benefits.

[0004] Common battery repair methods include hydrotherapy, high-current charging, pulse repair, chemical desulfurization, and electrochemical methods. Pulse repair includes negative pulse repair, high-frequency pulse repair, and composite resonant pulse repair. Most existing technologies utilize one of these techniques for desulfurization or repair, focusing on the repair technology itself without addressing the initiation and termination conditions, or maintenance mechanisms.

[0005] In UPS power systems, a single UPS may use a single battery bank, or multiple batteries may be connected in parallel. Therefore, researching battery repair and maintenance mechanisms, as well as logic control methods, is of great significance. Summary of the Invention

[0006] In view of the fact that existing technologies only focus on the repair or desulfurization technology itself, while neglecting the repair and maintenance mechanism for lead-acid batteries, the purpose of this invention is to provide a repair and maintenance device and intelligent logic control method for UPS power supply batteries. It proposes that intelligent maintenance of lead-acid batteries is divided into repair and maintenance; at the same time, it proposes repair and maintenance mechanisms, as well as the conditions for performing repair and maintenance, so as to realize intelligent logic control of battery repair and maintenance.

[0007] To address the aforementioned technical problems, embodiments of the present invention provide the following solutions:

[0008] On the one hand, a repair and maintenance device for UPS power supply batteries is provided, including a data processing module, at least one battery desulfurization module, a local panel and a back-end server;

[0009] The data processing module includes a central processing unit, a battery pack acquisition circuit, an intelligent electric switch assembly, a charging and discharging circuit, an uplink communication circuit, and a downlink communication circuit.

[0010] The battery pack acquisition circuit is used to acquire battery pack terminal voltage, pack current, pack status, ambient temperature and humidity, individual battery cell voltage, individual cell internal resistance, and individual cell negative terminal temperature; the intelligent electric switch assembly is used to control the charging and discharging of the battery pack after it is connected to or disconnected from the DC bus; the charging and discharging circuit is used to charge and discharge the connected battery pack; the central processing unit is used to realize data aggregation, data analysis and processing, data uploading, receiving instructions, and controlling the battery desulfurization module and the intelligent electric switch assembly; the uplink communication circuit is used to communicate with the local screen and the background server; the downlink communication circuit is used to communicate with the battery desulfurization module.

[0011] The battery desulfurization module uses a current-type composite high-frequency pulse generation circuit to generate pulse current that acts on the battery pack, thereby impacting and dissolving the sulfide crystals inside the battery plates.

[0012] Preferably, the intelligent electric switch assembly includes: at least one circuit breaker with an electric operating mechanism and at least one DC contactor; under normal operating conditions, one end of the circuit breaker with the electric operating mechanism is connected to the DC bus of the UPS power system, and the other end is connected to the battery pack, and the circuit breaker is in the closed state; under discharging or charging conditions, the central processing unit controls the circuit breaker with the electric operating mechanism to open, so that the battery pack is disconnected from the DC bus of the UPS power system, and at the same time controls the DC contactor to close, so that the battery pack is connected to the charging and discharging circuit, and controls the charging and discharging circuit to start constant current discharging of the battery pack, and after the discharge is completed, it starts charging the battery pack.

[0013] Preferably, the charging and discharging circuit is used to charge and discharge the connected battery pack, realizing the charging and discharging function of the battery pack after it is disconnected from the DC bus of the UPS power system.

[0014] The discharge function includes: enabling short-term discharge or full-capacity discharge of the battery pack, that is: discharging at a constant current rate of 10 hours according to the nominal capacity of the battery pack. During the discharge process, the voltage of the battery pack slowly decreases. At the start of the discharge, the discharge duration, discharge cut-off capacity, battery pack cut-off voltage, individual battery cell cut-off voltage, temperature exceeding the limit, and mains power failure are set. When any of the above conditions are met, the discharge stops.

[0015] The charging function includes a three-stage charging method for the battery: constant current charging, constant voltage charging, and float charging. The constant current charging stage requires setting a current limit and is in a constant current stage, with the voltage rising slowly. When the voltage rises to the set equalization voltage, it enters the constant voltage charging stage, at which point the charging current slowly decreases. When the voltage drops to the set float charging current, it enters the float charging stage.

[0016] Preferably, the uplink communication circuit is used to communicate with the local screen and the backend server, including RS232 circuit, RS485 circuit, and Ethernet interface circuit. It uses the RS485-based MODBUS protocol and the TCP / IP-based MODBUS protocol for communication, so as to upload the data collected by the battery pack acquisition circuit, the parameters and status of the battery desulfurization module, the data of the charging and discharging circuit, and the status of the intelligent electric switch assembly to the local screen and the backend server.

[0017] The downlink communication circuit is used to communicate with the battery desulfurization module, and includes an RS485 circuit, which uses the RS485-based MODBUS protocol for communication.

[0018] Preferably, the data processing module is connected to the battery desulfurization module, monitors the data and status of the battery desulfurization module, and controls the pulse current output of the battery desulfurization module;

[0019] The data processing module is connected to the local screen and the backend server. The local screen and the backend server display the data collected by the battery pack acquisition circuit, the parameters and status of the battery desulfurization module, the data of the charging and discharging circuit, and the status of the intelligent electric switch assembly. At the same time, they enable the setting of parameters of the local or remote control device, the opening and closing of the charging and discharging circuit, the mode setting of the battery desulfurization module, the automatic logic parameter setting of the battery desulfurization module, the opening and closing of the manual internal resistance, and the remote upgrade function of the device.

[0020] Preferably, each of the battery desulfurization modules includes: at least 8 desulfurization circuits, each desulfurization circuit forming a loop with a 12V battery cell; a time-sharing controller, with the 8 desulfurization circuits connected to the output terminal of the time-sharing controller, so that only one desulfurization circuit outputs a pulse current at any given time; the desulfurization circuit includes a pulse generation circuit and a harmonic generation circuit, which are respectively connected to the pulse current output terminal of the desulfurization circuit; the pulse generation circuit is used to output a pulse current of a preset frequency from the pulse current output terminal of the desulfurization circuit; the harmonic generation circuit is used to superimpose a harmonic current on the pulse current of the preset frequency; the pulse frequency range of the time-sharing controller output terminal is between 7000 Hz and 9000 Hz.

[0021] Preferably, the data processing module can manage up to 40 battery desulfurization modules, each battery desulfurization module outputs 8 current-type composite high-frequency pulse channels, each channel acting on one 12V battery or a group of 6 2V series batteries; therefore, each battery desulfurization module can act on 8 12V series battery groups or 48 2V series battery groups; a single battery group of a UPS power supply can have up to 40 12V series battery groups, and a single battery group requires up to 5 battery desulfurization modules; a UPS power supply can connect up to 8 battery groups in parallel, requiring up to 40 battery desulfurization modules;

[0022] Based on the different battery packs configured in the UPS power supply, the different number of battery cells in the pack, and the different nominal voltages of the individual cells, the automatic and intelligent desulfurization repair and maintenance of the batteries can be achieved through flexible settings via the local panel and the back-end server.

[0023] On the other hand, an intelligent logic control method for a UPS power supply battery repair and maintenance device is provided, including the following steps:

[0024] The data processing module controls the current-type composite high-frequency pulse current output of the battery desulfurization module to achieve the following three modes:

[0025] 1) Standby mode: Waiting for repair or maintenance commands from the data processing module, and controlling the pulse current not to be output; that is, the pulse current output used for desulfurization of this battery pack is in a closed state until a command to set it to other modes is received;

[0026] 2) Repair Mode: Upon receiving a repair command from the data processing module, the repair function is activated. The pulse current is controlled to output a current-type composite high-frequency pulse current at a certain frequency within a preset time period, acting on a single battery pack under a single DC power supply system to achieve the repair purpose. In other words, the pulse current output for desulfurization of this battery pack is in the on state until the preset time expires, after which it automatically returns to the previous mode. If it was previously in standby mode, it will return to standby mode after the repair is completed; if it was previously in maintenance mode, it will return to maintenance mode after the repair is completed.

[0027] 3) Maintenance Mode: Upon receiving a maintenance command from the data processing module, the maintenance function is activated, and the pulse current is controlled to output a current-type composite high-frequency pulse current at a certain frequency within a preset time period to act on one or more battery packs under a single DC power supply system to achieve the purpose of maintenance; that is, the pulse current output of the battery pack used for desulfurization is in an intermittent on or off state until a command to set it to other modes is received.

[0028] Preferably, the intelligent logic control method further includes the following logic control process of the data processing module controlling the battery desulfurization module:

[0029] 1) Regardless of whether it is standby mode, repair mode or maintenance mode, it is based on the battery pack. That is to say, the standby, repair or maintenance mode set by the local screen and the background server is the standby, repair or maintenance mode of a certain battery pack. When all battery desulfurization modules are running normally, the mode set by the battery desulfurization modules connected to the same battery pack is consistent.

[0030] 2) Only one battery pack has its pulse current output enabled. Before enabling the pulse current output of other battery packs, disable the pulse current output of the current battery pack that is enabled.

[0031] 3) When one or more battery desulfurization modules in the same group are in a fault or alarm state, shut down all battery desulfurization modules in the same group, so that the pulse current output of the battery group is turned off.

[0032] 4) When one or more battery desulfurization modules in the same group are offline, the battery desulfurization module will automatically shut down, so that the pulse current output of the battery desulfurization module will be turned off; the data processing module will shut down other online battery desulfurization modules in the same group, so that all pulse current outputs of the battery group will be turned off.

[0033] 5) When a battery pack is in the pulse current output on state, if the battery pack is in a non-float charging state, that is, in the discharging or equalizing charging state, the data processing module controls the battery desulfurization module of the battery pack to turn off the pulse current output until the battery pack is detected to have returned to the float charging state, and then the pulse current output is turned on again.

[0034] 6) When a battery pack is in the pulse current output on state, if the battery pack is manually or automatically internally resisted, the data processing module controls the battery desulfurization module of that battery pack to shut off the pulse current output until the internal resistance measurement is completed, and then the pulse current output is restarted.

[0035] Preferably, in the intelligent logic control method, the activation and deactivation of the intelligent logic control mode are related to the following factors: 1) battery pack production and commissioning time; 2) battery internal resistance; 3) battery discharge and charging capacity ratio; 4) battery pack voltage balance; 5) platform diagnostic results;

[0036] The new battery pack will automatically start maintenance mode after 2 years of operation and will start repair mode once after 4 years of operation. When the actual measured internal resistance value exceeds twice the nominal internal resistance value, the repair mode will automatically start repair. When the charging capacity after discharge is less than 1.2 times the discharge capacity or the discharge capacity is less than 80%, the repair mode will start repair.

[0037] The conditions for the above-mentioned automatic activation function can be set. After the same battery pack is repaired, it is necessary to wait 1 month before the next repair can be automatically activated. If more than 2 repairs are performed in a year, it is recommended to perform a capacity discharge calculation after the second repair. If the capacity discharge does not meet the standard, it is recommended to replace the battery pack. No more than 3 repairs are required in a year. After a total of 3 repairs, even if the repair conditions are met, the system will enter maintenance mode.

[0038] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following:

[0039] This invention provides an online repair and maintenance device for UPS power supply batteries and its intelligent logic control method. Through parameter settings on the local screen and the back-end server, as well as intelligent logic control of the data processing module, it realizes intelligent operation and maintenance of UPS power supply battery banks. It supplements and replaces the existing manual measurement, manual offline discharge with discharge load, battery alarms for maintenance personnel under float charging, and the lack of effective solutions for sulfation of batteries under long-term float charging. Maintenance personnel can complete the annual capacity approval of the battery bank according to the instructions on the local screen and the back-end server. They can also check the real-time status of the battery bank through the local screen and the back-end server, intelligently desulfurize the battery to extend its life cycle, and replace unqualified battery banks or individual cells according to the instructions, so as to extend the service life of the battery and improve the safety and reliability of the UPS power supply system.

[0040] The repair and maintenance technology using intelligent logic control provided by this invention achieves intelligent repair and maintenance of batteries, extending their power supply time and lifespan. It also avoids resource waste due to over-repair. Since the composite high-frequency pulse current repair technology itself is a micro-current charging process for the battery, prolonged operation in a micro-current charging environment will cause unnecessary energy consumption. Over time, this could even be counterproductive and negatively impact battery lifespan. Therefore, the repair and maintenance technology using intelligent logic control brings beneficial effects to the intelligent repair and maintenance of batteries. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the structure of the UPS power supply battery repair and maintenance device provided in an embodiment of the present invention;

[0043] Figure 2 This is a schematic diagram of a data processing module simultaneously managing multiple battery desulfurization modules provided in an embodiment of the present invention;

[0044] Figure 3 This is a schematic diagram of a UPS power supply with eight battery packs connected in parallel, provided in an embodiment of the present invention.

[0045] Figure 4 This is a schematic diagram illustrating the setting of all eight battery packs in maintenance mode according to an embodiment of the present invention;

[0046] Figure 5This is a schematic diagram of one or more battery packs or all battery packs being manually set to standby mode, while other battery packs are in maintenance mode, according to an embodiment of the present invention.

[0047] Figure 6 This is a schematic diagram of the battery pack 8 provided in an embodiment of the present invention configured in repair mode;

[0048] Figure 7 This is a schematic diagram illustrating the setting of standby mode according to the battery pack provided in an embodiment of the present invention;

[0049] Figure 8 This is a schematic diagram of the pulse current output of only one battery pack at the same time, provided by an embodiment of the present invention.

[0050] Figure 9 This is a schematic diagram showing one or more battery desulfurization modules of a group of batteries in a fault or alarm state, provided in an embodiment of the present invention.

[0051] Figure 10 This is a schematic diagram showing one or more battery desulfurization modules of a group of batteries in an offline state, as provided in an embodiment of the present invention.

[0052] Figure 11 This is a schematic diagram of the battery pack in a non-float charging state provided in an embodiment of the present invention;

[0053] Figure 12 This is a schematic diagram of the manual or automatic internal resistance measurement of a battery pack provided in an embodiment of the present invention.

[0054] Figure 13 This is a logic processing flowchart provided in an embodiment of the present invention.

[0055] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments, and such adjustments or modifications are still included in the protection scope of the present invention. Detailed Implementation

[0056] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] Embodiments of the present invention provide a repair and maintenance device for UPS power supply batteries, such as... Figure 1 As shown, the device includes a data processing module, at least one battery desulfurization module, a local screen, and a backend server;

[0058] The data processing module includes a central processing unit, a battery pack acquisition circuit, an intelligent electric switch assembly, a charging and discharging circuit, an uplink communication circuit, and a downlink communication circuit.

[0059] The battery pack acquisition circuit is used to acquire battery pack terminal voltage, pack current, pack status (equalization charge, discharge, float charge, etc.), ambient temperature and humidity, individual battery cell voltage, individual cell internal resistance, and individual cell negative terminal temperature; the intelligent electric switch assembly is used to control the charging and discharging of the battery pack after it is connected to or disconnected from the DC bus; the charging and discharging circuit is used to charge and discharge the connected battery pack; the central processing unit is used to realize data aggregation, data analysis and processing, data uploading, receiving instructions, and controlling the battery desulfurization module and the intelligent electric switch assembly; the uplink communication circuit is used to communicate with the local screen and the backend server; the downlink communication circuit is used to communicate with the battery desulfurization module.

[0060] The battery desulfurization module uses a current-type composite high-frequency pulse generation circuit to generate pulse current that acts on the battery pack, thereby impacting and dissolving the sulfide crystals inside the battery plates.

[0061] In this embodiment of the invention, the intelligent electric switch assembly includes: at least one circuit breaker with an electric operating mechanism and at least one DC contactor; under normal operating conditions, one end of the circuit breaker with the electric operating mechanism is connected to the DC bus of the UPS power system, and the other end is connected to the battery pack, and the circuit breaker is in a closed state; under discharging or charging conditions, the central processing unit controls the circuit breaker with the electric operating mechanism to open, so that the battery pack is disconnected from the DC bus of the UPS power system, and simultaneously controls the DC contactor to close, so that the battery pack is connected to the charging and discharging circuit, and controls the charging and discharging circuit to start constant current discharging of the battery pack, and after the discharge is completed, starts charging of the battery pack.

[0062] In this embodiment of the invention, the charging and discharging circuit is used to charge and discharge the connected battery pack, thereby realizing the charging and discharging function of the battery pack after it is disconnected from the DC bus of the UPS power system.

[0063] The discharge function includes: enabling short-term discharge or full-capacity discharge of the battery pack, namely: based on the nominal capacity of the battery pack, at a 10-hour rate (I 10Discharge is performed under constant current. During the discharge process, the battery pack voltage drops slowly. At the start of the discharge, the discharge duration, discharge cutoff capacity, battery pack cutoff voltage, individual battery cell cutoff voltage, temperature exceeding the limit, and mains power failure are set. When any of the above conditions are met, the discharge stops.

[0064] The charging function includes a three-stage charging method for the battery: constant current charging, constant voltage charging, and float charging. The constant current charging stage requires setting a current limit and is in a constant current stage, with the voltage rising slowly. When the voltage rises to the set equalization voltage, it enters the constant voltage charging stage, at which point the charging current slowly decreases. When the voltage drops to the set float charging current, it enters the float charging stage.

[0065] In this embodiment of the invention, the uplink communication circuit is used to communicate with the local screen and the backend server. It includes an RS232 circuit, an RS485 circuit, and an Ethernet interface circuit. It uses the RS485-based MODBUS protocol and the TCP / IP-based MODBUS protocol for communication, so as to upload the data collected by the battery pack acquisition circuit, the parameters and status of the battery desulfurization module, the data of the charging and discharging circuit, the status of the intelligent electric switch assembly, and other data to the local screen and the backend server.

[0066] The downlink communication circuit is used to communicate with the battery desulfurization module, and includes an RS485 circuit, which uses the RS485-based MODBUS protocol for communication.

[0067] In this embodiment of the invention, the data processing module is connected to the battery desulfurization module, monitors the data and status of the battery desulfurization module, and controls the pulse current output of the battery desulfurization module; the battery desulfurization module adopts a current-type composite high-frequency pulse generation circuit to generate pulse current that acts on the battery pack, and impacts and dissolves the sulfide crystals inside the battery plates through the pulse current.

[0068] The data processing module is connected to the local screen and the backend server. The local screen and the backend server display the data collected by the battery pack acquisition circuit, the parameters and status of the battery desulfurization module, the data of the charging and discharging circuit, and the status of the intelligent electric switch assembly. They also enable functions such as setting parameters of the local or remote control device, turning the charging and discharging circuit on and off, setting the mode of the battery desulfurization module, setting the automatic logic parameters of the battery desulfurization module, turning the manual internal resistance on and off, and remotely upgrading the device.

[0069] In this embodiment of the invention, each of the battery desulfurization modules includes: at least 8 desulfurization circuits, each desulfurization circuit forming a circuit with a single 12V battery cell (6 batteries are connected in series to form 12V for 2V batteries; 2 batteries are connected in series for 6V batteries); a time-sharing controller, with the 8 desulfurization circuits (or 8 repair and maintenance circuits) respectively connected to the output terminal of the time-sharing controller, so that only one desulfurization circuit outputs a pulse current at any given time; the desulfurization circuit includes a pulse generation circuit and a harmonic generation circuit, which are respectively connected to the pulse current output terminal of the desulfurization circuit; the pulse generation circuit is used to output a pulse current of a preset frequency from the pulse current output terminal of the desulfurization circuit; the harmonic generation circuit is used to superimpose a harmonic current on the pulse current of the preset frequency; the pulse frequency range of the output terminal of the time-sharing controller is between 7000 Hz and 9000 Hz.

[0070] The desulfurization repair method used in this invention is a current-type composite harmonic repair method. This method combines the high-frequency pulse current of high-frequency pulse repair with multiple higher-order harmonics in the composite resonant pulse waveform. The pulse frequency and amplitude used are not high, so they will not damage the electrode plates. The cycle of one desulfurization repair is about 3 weeks to 1 month. The higher-order harmonics in the pulse resonate with lead sulfate crystals of different sizes, causing the lead sulfate crystals to break down, thereby achieving the repair purpose.

[0071] Furthermore, such as Figure 2 As shown, the data processing module can manage up to 40 battery desulfurization modules. Each battery desulfurization module outputs 8 current-type composite high-frequency pulse channels, and each channel acts on one 12V battery or a group of 6 2V series batteries. Therefore, each battery desulfurization module can act on 8 12V series battery groups or 48 2V series battery groups. A single battery group in a UPS power supply can have a maximum of 40 12V series batteries, and a single battery group requires a maximum of 5 battery desulfurization modules. A UPS power supply can be connected in parallel with a maximum of 8 battery groups, requiring a maximum of 40 battery desulfurization modules.

[0072] Based on the different battery packs configured in the UPS power supply, the different number of battery cells in the pack, and the different nominal voltages of the individual cells, the automatic and intelligent desulfurization repair and maintenance of the batteries can be achieved through flexible settings via the local panel and the back-end server.

[0073] Accordingly, embodiments of the present invention also provide an intelligent logic control method for a UPS power supply battery repair and maintenance device, the method comprising the following steps:

[0074] The data processing module controls the current-type composite high-frequency pulse current output of the battery desulfurization module to achieve the following three modes:

[0075] 1) Standby mode: Waiting for repair or maintenance commands from the data processing module, and controlling the pulse current not to be output; that is, the pulse current output used for desulfurization of this battery pack is in a closed state until a command to set it to other modes is received;

[0076] 2) Repair Mode: Upon receiving a repair command from the data processing module, the repair function is activated. The pulse current is controlled to output a current-type composite high-frequency pulse current at a certain frequency within a preset time period, acting on a single battery pack under a single DC power supply system to achieve the repair purpose. In other words, the pulse current output for desulfurization of this battery pack is in the on state until the preset time expires, after which it automatically returns to the previous mode. If it was previously in standby mode, it will return to standby mode after the repair is completed; if it was previously in maintenance mode, it will return to maintenance mode after the repair is completed.

[0077] 3) Maintenance Mode: Upon receiving a maintenance command from the data processing module, the maintenance function is activated, and the pulse current is controlled to output a current-type composite high-frequency pulse current at a certain frequency within a preset time period to act on one or more battery packs under a single DC power supply system to achieve the purpose of maintenance; that is, the pulse current output of the battery pack used for desulfurization is in an intermittent on or off state until a command to set it to other modes is received.

[0078] In such Figure 3 In the illustrated embodiment, the UPS power supply is connected in parallel with eight battery banks, each bank containing 40 batteries, with each individual battery having a nominal voltage of 12V. Each bank connects to one battery desulfurization module for every eight batteries, requiring a total of five desulfurization modules per bank.

[0079] For example, setting all 8 battery packs to be in maintenance mode, such as Figure 4As shown, all eight battery banks are in maintenance mode: On day 1, the pulse current output of the desulfurization module of battery bank 1 (i.e., the battery desulfurization module, referred to here as the desulfurization module) is turned on, and the pulse current output of the desulfurization modules of other battery banks is turned off. On day 2, the pulse current output of the desulfurization module of battery bank 2 is turned on, and the pulse current output of the desulfurization modules of other battery banks is turned off, and so on. On day 8, the pulse current output of the desulfurization module of battery bank 8 is turned on, and the pulse current output of the desulfurization modules of other battery banks is turned off. After one cycle, on day 9, the pulse current output of the desulfurization module of battery bank 1 is turned on again, and so on. Each battery bank is in a maintenance state where the pulse current output is turned on for one day and turned off for seven days. At any given time, only one battery pack desulfurization module is in the pulse current output on state, while the desulfurization modules of other battery packs are in the pulse current output off state. In the automatic logic cycle control mode based on days, the time in days can be set flexibly from 0.5 hours to 1 day, with an increment of 0.5 hours. That is, the time can be set to 0.5 hours, 1 hour, 1.5 hours, 2 hours, etc., up to a maximum of 1 day.

[0080] One or more battery packs, or all of them, can be manually set to standby mode, while the other battery packs are in maintenance mode. Figure 5 As shown. For example, if battery pack 2 is set to standby mode, while other battery packs are set to maintenance mode: On day 1, the pulse current output of the desulfurization module of battery pack 1 is turned on, while the pulse current output of the desulfurization modules of other battery packs is turned off; on day 2, the time when the desulfurization module of battery pack 2 should be turned on is reversed, but because battery pack 2 is set to standby mode, it is not turned on, meaning that all battery packs are in a state of pulse current output being off on day 2. From the time it is set to standby mode, it remains in a state of pulse current output being off until the setting is changed to maintenance mode or repair mode. This continues, from day 3 to day 8, the pulse current output of the desulfurization modules of battery packs 3 to 8 is turned on respectively; after one cycle, on day 9, the pulse current output of the desulfurization module of battery pack 1 is turned on again, and so on, while the pulse current output of the desulfurization module of battery pack 2 remains off. Apart from this, all other battery packs are in a maintenance state where the pulse current output is turned on for one day and off for seven days. In the automatic logic loop control mode based on days, the time in days can be set flexibly from 0.5 hours to 1 day, with an increment of 0.5 hours. That is, the time can be set to 0.5 hours, 1 hour, 1.5 hours, 2 hours, etc., up to a maximum of 1 day.

[0081] Repair Mode: When a battery pack meets the repair activation conditions or the battery desulfurization module is set to repair mode via the local screen or backend server, the battery pack enters repair mode. During the set repair time period, the desulfurization module of this battery pack remains in the pulse current output on state for extended repair. Meanwhile, the desulfurization modules of other battery packs connected in parallel enter the pulse current output off state. For example... Figure 6 As shown (battery pack 8 is set to repair mode).

[0082] When battery pack 8 meets the conditions for starting repair or when the battery desulfurization module is set to repair mode via the local screen or backend server, the desulfurization module of battery pack 8 will enter repair mode during the set repair time period. This means the pulse current output of the desulfurization module of battery pack 8 will be activated, while the desulfurization modules of other parallel battery packs will be deactivated. When the repair time for battery pack 8 expires, all battery packs will enter the mode set before repair. If the battery pack was in maintenance mode before repair, it will remain in maintenance mode after repair; if it was in standby mode before repair, it will enter standby mode after repair. If another battery pack desulfurization module is already in repair mode before setting one battery pack to repair mode via the local screen or backend server, the desulfurization module of the battery pack in repair mode will be automatically changed back to its pre-repair mode before the newly set battery pack desulfurization module is activated. After the newly set battery pack to repair mode is completed, the desulfurization module of the battery pack previously in repair mode will be restarted until the repair time is accumulated to the set time.

[0083] Furthermore, the intelligent logic control method also includes the following logic control process for the data processing module to control the battery desulfurization module:

[0084] 1) Regardless of whether it is standby mode, repair mode or maintenance mode, it is based on the battery pack. That is to say, the standby, repair or maintenance mode set by the local screen and the background server is the standby, repair or maintenance mode of a certain battery pack. When all battery desulfurization modules are running normally, the mode set by the battery desulfurization modules connected to the same battery pack is consistent.

[0085] 2) Only one battery pack has its pulse current output enabled. Before enabling the pulse current output of other battery packs, disable the pulse current output of the current battery pack that is enabled.

[0086] 3) When one or more battery desulfurization modules in the same group are in a fault or alarm state, shut down all battery desulfurization modules in the same group, so that the pulse current output of the battery group is turned off.

[0087] 4) When one or more battery desulfurization modules in the same group are offline, the battery desulfurization module will automatically shut down, so that the pulse current output of the battery desulfurization module will be turned off; the data processing module will shut down other online battery desulfurization modules in the same group, so that all pulse current outputs of the battery group will be turned off.

[0088] 5) When a battery pack is in the pulse current output on state, if the battery pack is in a non-float charging state, that is, in the discharging or equalizing charging state, the data processing module controls the battery desulfurization module of the battery pack to turn off the pulse current output until the battery pack is detected to have returned to the float charging state, and then the pulse current output is turned on again.

[0089] 6) When a battery pack is in the pulse current output on state, if the battery pack is manually or automatically internally resisted, the data processing module controls the battery desulfurization module of that battery pack to shut off the pulse current output until the internal resistance measurement is completed, and then the pulse current output is restarted.

[0090] In such Figure 7 In the illustrated embodiment, the battery pack is set to standby mode, repair mode, or maintenance mode. For example, if battery pack 1 is set to standby mode, all five battery desulfurization modules 1 to 5 connected to battery 1 will be in standby mode; if battery pack 1 is set to repair mode, all five battery desulfurization modules 1 to 5 connected to battery 1 will be in repair mode; similarly, if battery pack 1 is set to maintenance mode, all five battery desulfurization modules 1 to 5 connected to battery 1 will be in maintenance mode.

[0091] Only one battery pack has its desulfurization pulse current output active. Before activating the desulfurization pulse current output of other battery packs, the active desulfurization pulse current output of the current battery pack must be deactivated. For example... Figure 8 As shown, only the first group is in the pulse current output on state at the same time, while the other groups are in the pulse current output off state.

[0092] When one or more of the desulfurization modules in the same battery group are in a fault or alarm state, such as Figure 9As shown, the battery desulfurization module itself should automatically shut off the pulse current output. After the data processing module detects that the battery desulfurization module is in a fault or alarm state, it automatically shuts off the pulse current output of all other battery desulfurization modules in the same group and reports the battery desulfurization module fault or alarm information to the local screen and the background server. At this time, regardless of whether the battery desulfurization module in this group is set to standby mode, repair mode or maintenance mode, it will always be in the pulse current output off state until the fault or alarm is cleared and the state returns to normal operation. Only then can the pulse current output be turned on according to the repair mode or maintenance mode.

[0093] The fault information includes: the connection cable between the battery desulfurization module and the battery is disconnected, or the connection cable between the battery desulfurization module and the battery is reversed; the alarm information includes: monitoring AC power supply overvoltage or undervoltage, overheating of heating components inside the equipment, and overvoltage of the battery voltage.

[0094] When one or more of the desulfurization modules in the same battery group are offline, such as Figure 10 As shown, the data processing module loses communication with the offline battery desulfurization module and cannot monitor or control it. Therefore, the battery desulfurization module can automatically detect the communication link with the data processing module. When it detects a loss of contact, it can automatically shut off the pulse current output after a set period of time. Simultaneously, after detecting the battery desulfurization module is offline, the data processing module automatically shuts off the pulse current output of all other battery desulfurization modules in the same group and reports the offline information to the local screen and the backend server. During this time, regardless of whether the battery desulfurization module is set to standby mode, repair mode, or maintenance mode, the pulse current output remains off until the offline status is resolved and the module returns to normal operation. Only then can the pulse current output be turned on according to the repair or maintenance mode.

[0095] When a battery pack is in pulse current output mode, if the battery pack is in non-float charging mode, that is, in discharging or equalizing charging mode, then... Figure 11 As shown, the data processing module controls the battery desulfurization module of the battery pack to shut off the output of the pulse current until it detects that the battery pack has returned to the float charging state, at which point the output of the pulse current is turned on again.

[0096] When a battery pack is in pulse current output mode, such as during manual or automatic internal resistance measurement of the battery pack, if... Figure 12 As shown, the data processing module controls the battery desulfurization module of the battery pack to shut off the output of the pulse current until the internal resistance measurement is completed, at which point the output of the pulse current is restarted.

[0097] In this embodiment of the invention, the battery desulfurization module is set to standby mode, maintenance mode, or repair mode. In addition to being manually set on the local screen or remotely manually set from the background server system software, the device itself also has intelligent logic control function.

[0098] The activation and deactivation of the intelligent logic control mode are related to the following factors: 1) battery pack production and commissioning time; 2) battery internal resistance; 3) battery discharge and charging capacity ratio; 4) battery pack voltage balance; 5) platform diagnostic results.

[0099] Under normal circumstances, the maintenance mode will be automatically activated 2 years after the new battery pack is put into operation, and the repair mode will be activated once after 4 years of operation. When the actual measured internal resistance value exceeds twice the nominal internal resistance value, the repair mode will be automatically activated. When the charging capacity after discharge is less than 1.2 times the discharge capacity or the discharge capacity is less than 80%, the repair mode will be activated.

[0100] The conditions for the above-mentioned automatic activation function can be set. After the same battery pack is repaired, it is necessary to wait 1 month before the next repair can be automatically activated. If more than 2 repairs are performed in a year, it is recommended to perform a capacity discharge calculation after the second repair. If the capacity discharge does not meet the standard, it is recommended to replace the battery pack. No more than 3 repairs are required in a year. After a total of 3 repairs, even if the repair conditions are met, the system will enter maintenance mode.

[0101] The main logic processing flow is as follows: Figure 13 As shown, when the timer interrupts, the system first checks if there is a battery pack that can be repaired. If there is a battery pack that can be repaired, it checks if the repair time has expired. If not, it continues to repair. If the time has expired, it shuts down the repair. If there is no battery pack that can be repaired, it shuts down the current group and moves to the next group. It then checks if there is a maintenance status indicator. If the next group is in standby mode, it does not start. If the next group is in maintenance mode, it starts the next group.

[0102] In summary, this invention provides an online repair and maintenance device for UPS power supply batteries and its intelligent logic control method. Through parameter settings on the local screen and the backend server, as well as intelligent logic control of the data processing module, it realizes intelligent operation and maintenance of UPS power supply battery banks. This invention supplements and replaces existing methods for UPS power supply battery bank maintenance, such as manual measurement, manual offline discharge with a discharge load, battery alarms for maintenance personnel under float charging, and the lack of effective solutions for battery sulfation under long-term float charging. Maintenance personnel can complete the annual capacity approval of the battery bank according to the instructions on the local screen and the backend server. They can also view the real-time status of the battery bank daily through the local screen and the backend server, perform intelligent desulfation of the battery to extend its life cycle, and replace unqualified battery banks or individual cells according to instructions, thereby extending battery life and improving the safety and reliability of the UPS power supply system.

[0103] The repair and maintenance technology using intelligent logic control provided by this invention achieves intelligent repair and maintenance of batteries, extending their power supply time and lifespan. It also avoids resource waste due to over-repair. Since the composite high-frequency pulse current repair technology itself is a micro-current charging process for the battery, prolonged operation in a micro-current charging environment will cause unnecessary energy consumption. Over time, this could even be counterproductive and negatively impact battery lifespan. Therefore, the repair and maintenance technology using intelligent logic control brings beneficial effects to the intelligent repair and maintenance of batteries.

[0104] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0105] The use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0106] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0107] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0108] Those skilled in the art will understand that all or part of the steps in the methods of the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc.

[0109] The above description is only a preferred embodiment of the present invention and is 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 within the protection scope of the present invention.

Claims

1. A device for repairing and maintaining a battery of an UPS power supply, characterized in that, The application relates to a data processing module, at least one storage battery sulfur removal module, a local screen and a background server. The data processing module comprises a central processor, a storage battery group acquisition circuit, an intelligent electric switch combination, a charging and discharging circuit, an uplink communication circuit and a downlink communication circuit. The storage battery group acquisition circuit is used for acquiring storage battery group terminal voltage, group current, group state, environmental temperature and humidity, storage battery monomer voltage, monomer internal resistance and monomer negative pole column temperature; the intelligent electric switch combination is used for controlling the storage battery group to be connected to or separated from a direct current bus; the charging and discharging circuit is used for charging and discharging the connected storage battery group; the central processor is used for realizing data collection and convergence, data analysis and processing, data uploading, receiving instructions and controlling the storage battery sulfur removal module and the intelligent electric switch combination; the uplink communication circuit is used for communicating with the local screen and the background server; and the downlink communication circuit is used for communicating with the storage battery sulfur removal module. The storage battery sulfur removal module adopts a current type composite high-frequency pulse generation circuit, pulse current is generated and acts on the storage battery group, and the internal sulfide crystals of the storage battery pole plate are impacted and dissolved by the pulse current. The data processing module controls the output of the current type composite high-frequency pulse current of the storage battery sulfur removal module to realize three modes, namely, a standby mode, a repair mode and a maintenance mode. In the repair mode, the pulse current output for removing sulfur of the storage battery group is in an open state until a preset time is reached and the mode is automatically restored to the previous mode; if the previous mode is the standby mode, the repair is completed and the mode is restored to the standby mode; if the previous mode is the maintenance mode, the repair is completed and the mode is restored to the maintenance mode. In the maintenance mode, the pulse current output for removing sulfur of the storage battery group is in an intermittent open or closed state until a command of setting other modes is received. The new storage battery group is automatically started in the maintenance mode after being put into operation for 2 years, is started in the repair mode once for repair after being put into operation for 4 years, is automatically started in the repair mode once for repair when the actually measured internal resistance value exceeds 2 times the nominal internal resistance value, and is started in the repair mode once for repair when the charging capacity after discharging and charging is less than 1.2 times the discharging capacity or less than 80% of the discharging capacity.

2. The repair and maintenance device of claim 1, wherein The intelligent electric switch combination comprises at least one circuit breaker with a live operating mechanism and at least one direct current contactor; in a normal working state, one end of the circuit breaker with the live operating mechanism is connected to a direct current bus of a UPS power supply system, the other end is connected to the storage battery group, and the switch state of the circuit breaker is in a closed state; in a discharging or charging state, the central processor controls the circuit breaker with the live operating mechanism to be disconnected, so that the storage battery group is separated from the direct current bus of the UPS power supply system, controls the direct current contactor to be closed, so that the storage battery group is connected to the charging and discharging circuit, controls the charging and discharging circuit to start constant current discharging of the storage battery group, and starts charging of the storage battery group after the discharging is completed.

3. The repair and maintenance device of claim 1, wherein The charging and discharging circuit is used for charging and discharging the connected storage battery group, and realizes the charging and discharging function of the storage battery group after being separated from the direct current bus of the UPS power supply system. The discharging function comprises: realizing short-time discharging or capacity discharging of the battery pack, comprising: discharging at a 10-hour rate constant current according to the nominal capacity of the battery pack, during the discharging process, the voltage of the battery pack slowly decreases, and when the discharging starts, the discharging time, the discharging cut-off capacity, the cut-off voltage of the battery pack, the cut-off voltage of the battery cell, the temperature exceeding the standard and the power failure are set, and when any one of them is reached, the discharging is stopped; The charging function comprises: the charging function of the battery is "three-stage" charging, comprising: constant current charging, constant voltage charging and floating charging; the constant current charging stage is characterized by the need to set a current limit, and the voltage slowly rises in the constant current stage; when the voltage rises to the set equalizing voltage, the constant voltage charging stage is entered, at which time the charging current slowly decreases; when the charging current decreases to the set floating current, the floating stage is entered.

4. The repair and maintenance device of claim 1, wherein The uplink communication circuit is used to realize communication with the local screen and the background server, and comprises an RS232 circuit, an RS485 circuit and an Ethernet interface circuit, and communication is realized by using a MODBUS protocol based on RS485 and a MODBUS protocol based on TCP / IP, so that the collected data of the battery pack collection circuit, the parameters and states of the battery desulfurization module, the data of the charging and discharging circuit and the states of the intelligent electric switch combination are uploaded to the local screen and the background server. The downlink communication circuit is used to realize communication with the battery desulfurization module, and comprises an RS485 circuit, and communication is realized by using a MODBUS protocol based on RS485.

5. The repair and maintenance device of claim 1, wherein The data processing module is connected with the battery desulfurization module, monitors the data and states of the battery desulfurization module, and controls the pulse current output of the battery desulfurization module. The data processing module is connected with the local screen and the background server, the local screen and the background server realize data display of the collected data of the battery pack collection circuit, the parameters and states of the battery desulfurization module, the data of the charging and discharging circuit and the states of the intelligent electric switch combination, and simultaneously realize setting of local control or remote control device parameters, opening and closing of the charging and discharging circuit, mode setting of the battery desulfurization module, automatic logic parameter setting of the battery desulfurization module, opening and closing of the manual internal resistance, and device remote upgrading function.

6. The repair and maintenance device of claim 1, wherein Each battery desulfurization module comprises: at least 8 desulfurization circuits, each desulfurization circuit and a 12V battery cell form a loop; a time-sharing controller, the 8 desulfurization circuits are connected with the output end of the time-sharing controller, so that only one desulfurization circuit outputs pulse current at the same time; the desulfurization circuit comprises a pulse generation circuit and a harmonic generation circuit, the pulse generation circuit and the harmonic generation circuit are connected to the pulse current output end of the desulfurization circuit; the pulse generation circuit is used to output pulse current of a preset frequency from the pulse current output end of the desulfurization circuit; the harmonic generation circuit is used to superimpose harmonic current on the pulse current of the preset frequency; the pulse frequency range of the output end of the time-sharing controller is between 7000 Hz and 9000 Hz.

7. The repair and maintenance device of claim 1, wherein The data processing module can manage up to 40 of the sulfur removal modules for storage batteries, each of which outputs 8 current type composite high frequency pulse channels, each channel acting on 1 set of 12V storage batteries or 6 sets of 2V series storage battery groups; therefore, each of the sulfur removal modules for storage batteries can act on 8 sets of 12V series storage battery groups or 48 sets of 2V series storage battery groups; the single group of storage battery groups of the UPS power supply has up to 40 sets of 12V series storage battery groups, and the single group of storage battery groups needs up to 5 of the sulfur removal modules for storage batteries; the UPS power supply in parallel has up to 8 groups of storage battery groups, and needs up to 40 of the sulfur removal modules for storage batteries; According to different storage battery groups configured by the UPS power supply, different numbers of storage battery monomers in the groups, and different nominal voltages of the monomers, flexible settings are made through the local screen and the background server, so that automatic intelligent sulfur removal and maintenance of the storage batteries can be realized.

8. An intelligent logic control method for a repair and maintenance device for a battery of an UPS power supply according to any one of claims 1-7, characterized in that, The method comprises the following steps: The data processing module controls the output of the current type composite high frequency pulse current of the sulfur removal module for storage batteries to realize the following three modes: 1) standby mode: waiting for the repair or maintenance command of the data processing module, and controlling the pulse current not to be output; that is, the pulse current output for sulfur removal of the storage battery group is in a closed state until a command to set other modes is received; 2) repair mode: receiving the repair command of the data processing module, opening the repair function, and controlling the pulse current to output the current type composite high frequency pulse current at a certain frequency within a preset time period to act on a single storage battery group under a single DC power supply system, so as to achieve the purpose of repair; that is, the pulse current output for sulfur removal of the storage battery group is in an open state until the preset time is up and the previous mode is automatically restored; If the previous mode is the standby mode, the standby mode is restored after the repair is completed; if the previous mode is the maintenance mode, the maintenance mode is restored after the repair is completed; 3) maintenance mode: receiving the maintenance command of the data processing module, opening the maintenance function, and controlling the pulse current to output the current type composite high frequency pulse current at a certain frequency within a preset time period to act on a single or multiple storage battery groups under a single DC power supply system, so as to achieve the purpose of maintenance; that is, the pulse current output for sulfur removal of the storage battery group is in an intermittent open or closed state until a command to set other modes is received.

9. The intelligent logic control method of claim 8, wherein, The intelligent logic control method further comprises the following logic control process of the data processing module controlling the sulfur removal module for storage batteries: 1) Regardless of the standby mode, the repair mode or the maintenance mode, it is based on the storage battery group, that is, the standby, repair or maintenance mode set by the local screen and the background server is the standby, repair or maintenance mode of a certain storage battery group; in the case that the sulfur removal module for storage batteries is normally running, the modes set by the sulfur removal modules for storage batteries connected to the same storage battery group are consistent; 2) Only the pulse current output of one of all the storage battery groups is in an open state, and before the pulse current outputs of other storage battery groups are opened, the pulse current output of the current storage battery group in the open state is closed. 3) When one or more of the same group of the battery sulfur removal module is in fault or alarm state, all the battery sulfur removal module of the same group is closed, so that the pulse current output of the battery group is in the closed state; 4) When one or more of the same group of the battery sulfur removal module is in offline state, the battery sulfur removal module is automatically closed, so that the pulse current output of the battery sulfur removal module is in the closed state; the data processing module closes the other online battery sulfur removal module of the same group, so that all the pulse current outputs of the battery group are in the closed state; 5) When a certain battery group is in the pulse current output open state, if the battery group is in the non-float state, that is, in the discharge or equalization state, the data processing module controls the battery sulfur removal module of the battery group to close the pulse current output, until the battery group is detected to return to the float state, and then the pulse current output is restarted; 6) When a certain battery group is in the pulse current output open state, if the battery group is in manual internal resistance measurement or automatic internal resistance measurement, the data processing module controls the battery sulfur removal module of the battery group to close the pulse current output, until the internal resistance measurement is completed, and then the pulse current output is restarted.

10. The intelligent logic control method of claim 8, wherein, In the intelligent logic control method, the opening and closing of the intelligent logic control mode is related to the following factors: 1) battery group production and operation time; 2) battery internal resistance; 3) discharge and charge capacity ratio of the battery; 4) voltage balance degree of the battery group; 5) platform diagnosis result; The new battery group is automatically started in the maintenance mode after 2 years of operation, and the new battery group is started in the repair mode once every 4 years; when the actual measured internal resistance value exceeds 2 times the nominal internal resistance value, the repair mode is automatically started once for repair; when the charging capacity after discharging does not reach 1.2 times the discharge capacity or the discharge capacity is less than 80%, the repair mode is started once for repair; After the repair of the same group of battery groups is completed, it needs to be automatically started for the next repair after 1 month; If the annual repair is more than 2 times of repair, the actual capacity is calculated after the second repair, and the battery group whose capacity does not meet the standard is recommended to be replaced; If the annual repair is not more than 3 times, after 3 times of repair, the repair mode is entered even if the repair condition is met.

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