CN111487552A - Storage battery maintenance device based on state self-evaluation - Google Patents
Storage battery maintenance device based on state self-evaluation Download PDFInfo
- Publication number
- CN111487552A CN111487552A CN202010306283.8A CN202010306283A CN111487552A CN 111487552 A CN111487552 A CN 111487552A CN 202010306283 A CN202010306283 A CN 202010306283A CN 111487552 A CN111487552 A CN 111487552A
- Authority
- CN
- China
- Prior art keywords
- storage battery
- battery
- discharging
- module
- charging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/389—Measuring internal impedance, internal conductance or related variables
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a storage battery maintenance device based on state self-evaluation, which comprises a real-time online monitoring module, a state self-evaluation module and a state self-evaluation module, wherein the real-time online monitoring module is used for acquiring, monitoring and storing state data of a storage battery in real time; the storage battery failure expert analysis module is used for judging the performance change trend of the storage battery according to the state data, judging whether the storage battery meets the discharge condition or not and generating a maintenance suggestion; and the automatic charging and discharging module is used for automatically switching the charging and discharging of the storage battery according to the judgment result of the storage battery failure expert analysis module. Compared with the prior art, the invention reduces the labor intensity of workers, improves the working efficiency and the working safety, and is convenient for the operation personnel to effectively and quickly know the integral operation condition of the storage battery.
Description
Technical Field
The invention relates to the field of storage battery maintenance, in particular to a storage battery maintenance device based on state self-evaluation.
Background
In both the electric dc system and the UPS system, the battery plays an extremely important role as a backup power source in the system. At ordinary times, the storage battery is in a floating charging standby state, alternating current commercial power is converted into direct current through the rectifying equipment to supply power to the load, and under the condition of alternating current power loss or other accident states, the storage battery is the only energy supplier of the load, once a problem occurs, a power supply system is in paralysis, and equipment outage and major operation accidents are caused.
At present, valve-controlled lead-acid storage batteries are mostly adopted and commonly called maintenance-free storage batteries, the application of the valve-controlled lead-acid storage batteries greatly reduces the complicated maintenance work of the open lead-acid storage batteries, however, the maintenance-free storage batteries have the advantage of being just the defect and the difficulty of operation management. In addition to the normal life cycle, some early failures of the battery occur due to the quality of the battery itself, such as defects in materials, structures, processes, and misuse. The maintenance-free method only means maintenance without adding water, adding acid, changing liquid and the like, but daily maintenance is still necessary, and the operation detection maintenance method of the open type lead-acid storage battery is not suitable for the valve control type lead-acid storage battery any more, so that new requirements are provided for storage battery testing equipment.
At present, the detection and maintenance of storage batteries at home and abroad mainly measures the floating charge voltage and the checking discharge and the internal resistance of the storage battery manually at regular intervals, and carries out sensory judgment on the conditions of the storage battery by means of on-site watching, listening and touching or measuring the voltage one by a multimeter, the floating charge voltage of the storage battery has no corresponding relation with the capacity of the storage battery, the checking discharge is labor-consuming, time-consuming and too long in period, the normal running state and the performance change trend of the storage battery cannot be reflected in real time, the timely discovery of hidden dangers and the elimination of defects cannot be ensured, and the storage battery cannot. The internal resistance test of the storage battery can accurately reflect the performance change trend of the storage battery only when the capacity of the storage battery falls below 80 percent. Therefore, the current mainstream storage battery routing inspection and internal resistance test cannot well reflect the performance change trend and the residual capacity of the storage battery in real time, and many times, when the alternating current is lost and the storage battery supplies power, the failure of a single battery in the storage battery pack is found, and the whole group of storage batteries have no voltage output.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a storage battery maintenance device based on state self-evaluation, which improves the detection and maintenance efficiency of the storage battery.
The purpose of the invention can be realized by the following technical scheme:
a storage battery maintenance device based on state self-evaluation comprises a real-time online monitoring module, a state self-evaluation module and a state self-evaluation module, wherein the real-time online monitoring module is used for collecting, monitoring and storing state data of a storage battery in real time;
the storage battery failure expert analysis module is used for judging the performance change trend of the storage battery according to the state data, judging whether the storage battery meets the discharge condition or not and generating a maintenance suggestion;
and the automatic charging and discharging module is used for automatically switching the charging and discharging of the storage battery according to the judgment result of the storage battery failure expert analysis module.
Further, the state data includes voltage, current, temperature and/or internal resistance of the battery.
Furthermore, the real-time online monitoring module monitors the internal resistance of the storage battery in the storage battery pack by adopting a four-wire system internal resistance testing method.
Further, the four-wire internal resistance test method specifically includes that the storage battery pack comprises a first storage battery, a tested storage battery and a second storage battery which are sequentially connected, a negative electrode of the first storage battery is connected with a positive electrode of the tested storage battery, a positive electrode of the second storage battery is connected with a negative electrode of the tested storage battery, and two ends of the positive electrode and two ends of the negative electrode of the tested storage battery are respectively connected with voltage sampling equipment through two voltage sampling lines; and the negative electrode of the first storage battery and the positive electrode of the second storage battery are respectively connected with a constant-current discharging load through two discharging wires.
Further, the automatic charging and discharging module comprises a control unit, a voltage acquisition unit, an electric operating mechanism and a charging and discharging unit, wherein the control unit is respectively connected with the electric operating mechanism and the voltage acquisition unit, and the electric operating mechanism is connected with the charging and discharging unit.
Further, the charge and discharge unit comprises a storage battery pack, a freewheeling diode, an isolating switch, a storage battery fuse wire, charging equipment, a direct current load, a discharge switch and a discharge resistor, the storage battery pack is respectively connected with a first line and a second line in parallel, the first line comprises the discharge switch and the discharge resistor which are sequentially connected, the second line comprises the freewheeling diode, the storage battery fuse wire and the charging equipment which are sequentially connected, two ends of the charging equipment are connected with the direct current load in parallel, two ends of the freewheeling diode are connected with the isolating switch in parallel, and the discharge switch and the isolating switch are controlled by the electric operating mechanism.
Furthermore, in the second line, both ends of the charging device are connected with the storage battery fuse.
Further, the storage battery failure expert analysis module comprises a data conversion unit, a floating charge model, an even charge model, an internal resistance model, a capacity model and an artificial neural network model, wherein the data conversion unit is respectively connected with the floating charge model, the even charge model, the internal resistance model and the capacity model, and the artificial neural network model is respectively connected with the floating charge model, the even charge model, the internal resistance model and the capacity model and is used for judging the performance change trend of the storage battery according to the floating charge, even charge and internal resistance characteristics of the storage battery and giving a pre-estimated value of the capacity of the storage battery.
Further, the storage battery maintenance device further comprises a battery equalization module, and the automatic charging and discharging module is used for switching charging and discharging according to the battery equalization module.
Further, the battery equalization module comprises a battery information acquisition unit, an equalization strategy operation unit and an equalization realization unit which are connected in sequence, the equalization realization unit is connected with the automatic charging and discharging module, the battery information acquisition unit is used for acquiring battery information of a storage battery, the battery information comprises voltage, state of charge, temperature, a battery manufacturer and cycle number information, and the equalization strategy operation unit is used for generating state output quantity based on the battery information according to preset equalization rules and adjusting the storage battery through the equalization realization unit.
Compared with the prior art, the invention has the following advantages:
(1) according to the storage battery maintenance device provided by the invention, the real-time online monitoring module is used for collecting the state information of the storage battery in real time, the state self-evaluation is carried out through the storage battery failure expert analysis module, and the automatic charge-discharge module is controlled to automatically carry out charge-discharge switching, so that the complex wiring work (about 1-2 working hours) in the past test and unnecessary time waste of personnel in the discharge process are omitted, the labor intensity of the personnel is reduced, the working efficiency and the working safety are greatly improved, and the operation and inspection personnel can effectively and quickly know the integral operation condition of the storage battery.
(2) The invention adopts a four-wire system internal resistance test method to monitor the internal resistance of the storage battery in the storage battery pack, avoids the influence of linear voltage drop generated by larger current in the discharging process on the internal resistance test precision, can be automatically carried out on line without separating from a system, and has free and settable test period.
(3) The automatic charging and discharging module controls the on-off of the switch through the electric operating mechanism, and the fly-wheel diode and the isolating switch are connected in series in the charging and discharging unit of the automatic charging and discharging module in the storage battery loop, so that the isolating switch is disconnected when automatic discharging is achieved, the storage battery is discharged, and meanwhile, the storage battery can supply power to a load through the fly-wheel diode when alternating current is lost or the charging equipment stops working, the automatic charging and discharging of the storage battery are realized, and the working efficiency is improved.
(4) In the charging and discharging unit, the two ends of the charging equipment are respectively connected with the storage battery fuse wire, so that the safety of a charging and discharging unit loop is improved.
(5) The storage battery failure expert analysis module adopts fuzzy mathematics and the diagnosis principle of an artificial neural network, associates various data through a topological structure in a nonlinear processing mode, obtains a judgment conclusion, has a self-adaptive function, and can be continuously adjusted through a learning algorithm, so that the judgment precision is continuously improved.
(6) The battery balancing module is arranged, and the battery information is collected, the balancing state is output according to the balancing rule, the corresponding battery is balanced, and the service life of the battery pack can be effectively prolonged.
Drawings
FIG. 1 is a schematic view of the battery maintenance apparatus according to the present invention;
FIG. 2 is a schematic structural diagram of an internal resistance monitoring terminal according to the present invention;
FIG. 3 is a schematic structural diagram of a charge/discharge unit in the automatic charge/discharge module according to the present invention;
FIG. 4 is a schematic diagram of an artificial neural network model according to the present invention;
FIG. 5 is a schematic diagram illustrating a connection status of a battery equalization module according to the present invention;
in the figure, 1, a storage battery failure expert analysis module, 11, a field host, 12, a wireless module, 13, a mobile terminal, 2, a real-time online monitoring module, 21, a voltage monitoring terminal, 22, an internal resistance monitoring terminal, 221, a voltage sampling device, 222, a constant current discharge load, 23, a temperature monitoring terminal, 3, an automatic charge and discharge module, 31, a freewheeling diode, 32, an isolating switch, 33, a storage battery fuse, 34, a charging device, 35, a direct current load, 36, a discharge switch, 37, a discharge resistor, 4, a battery balancing module, 5, a storage battery pack, 51 and a storage battery.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
As shown in fig. 1, the present embodiment provides a battery maintenance apparatus based on state self-evaluation, including:
the real-time online monitoring module 2 is used for collecting, monitoring and storing the state data of the storage battery in real time;
the storage battery failure expert analysis module 1 is used for judging the performance change trend of the storage battery according to the state data, judging whether the storage battery meets the discharge condition or not and generating a maintenance suggestion;
the automatic charging and discharging module 3 is used for automatically switching the charging and discharging of the storage battery according to the judgment result of the storage battery failure expert analysis module 1;
and the battery balancing module 4 is used for outputting charging current regulation information based on the battery information according to a preset balancing rule.
Each module is described in detail below.
1. Real-time on-line monitoring module 2
The state data includes voltage, current, temperature, and internal resistance of the battery. The real-time online monitoring module 2 comprises a voltage monitoring terminal 21, a current monitoring terminal, a temperature monitoring terminal 23 and an internal resistance monitoring terminal 22, wherein the voltage monitoring terminal 21, the current monitoring terminal, the temperature monitoring terminal 23 and the internal resistance monitoring terminal 22 are all connected with the storage battery failure expert analysis module 1. The internal resistance monitoring terminal 22 is a four-wire internal resistance testing terminal, the internal resistance of the storage battery in the storage battery pack 5 is periodically monitored by adopting a four-wire internal resistance testing method, the internal resistance data is automatically stored by the storage battery maintenance device, and the longitudinal comparison and the transverse comparison of data can be automatically performed.
In this embodiment, the voltage monitoring terminal 21, the current monitoring terminal, the temperature monitoring terminal 23 and the internal resistance monitoring terminal 22 are all connected to the battery failure expert analysis module 1 through the wireless module 12, and the wireless module 12 includes but is not limited to a WiFi module, a Zigbee module and a 4G communication module.
As shown in fig. 2, the four-wire internal resistance test method specifically includes that the storage battery pack 5 includes a first storage battery, a tested storage battery and a second storage battery which are connected in sequence, a negative electrode of the first storage battery is connected with a positive electrode of the tested storage battery through a lead, a positive electrode of the second storage battery is connected with a negative electrode of the tested storage battery through a lead, and two ends of the positive electrode and the negative electrode of the tested storage battery are respectively connected with a voltage sampling device 221 through two voltage sampling lines; the negative electrode of the first storage battery and the positive electrode of the second storage battery are respectively connected with a constant current discharging load 222 through two discharging wires.
The four-wire internal resistance test method adopts a mode that two voltage sampling wires are separated from two discharging wires, so that the influence of the wire voltage drop generated by large current in the discharging process on the internal resistance test precision is avoided. The test process is carried out on line and automatically without separating from the system, and the test period can be freely set.
The storage battery online internal resistance testing device can further add filtering measures of software and hardware in the storage battery maintenance device, filter the influence of the charger ripple on the internal resistance test, and ensure the accuracy, consistency and repeatability of the storage battery online internal resistance test.
The storage battery maintenance device can realize the automatic monitoring of each battery voltage, each battery pack terminal voltage, each battery charging and discharging current, each battery temperature and other parameters, and the real-time display and storage of the data through the real-time online monitoring module 2 to acquire, display, exceed the standard alarm, store and background communication of each data of the storage battery voltage, the current, the internal resistance and the like in real time.
The real-time online monitoring module 2 mainly realizes the collection, arrangement and analysis of the data of the storage battery pack 5, adopts a bus type layered distributed structure, and has good anti-interference performance, expandability and overall performance. The bus type layered distributed structure is composed of a plurality of online monitoring terminals, and the online monitoring terminals mainly achieve the functions of information parameter acquisition, signal conditioning, analog-to-digital conversion and data preprocessing of monitored equipment.
2. Automatic charging and discharging module 3
The automatic charging and discharging module 3 comprises a control unit, a voltage acquisition unit, an electric operating mechanism and a charging and discharging unit, wherein the control unit is respectively connected with the electric operating mechanism and the voltage acquisition unit, and the electric operating mechanism is connected with the charging and discharging unit.
As shown in fig. 3, the charging and discharging unit includes a storage battery 5, a freewheeling diode 31, a disconnecting switch 32, a storage battery fuse 33, a charging device 34, a dc load 35, a discharging switch 36 and a discharging resistor 37, the storage battery 5 is respectively connected in parallel with a first line and a second line, the first line includes the discharging switch 36 and the discharging resistor 37 which are connected in sequence, the second line includes the freewheeling diode 31, the storage battery fuse 33 and the charging device 34 which are connected in sequence, two ends of the charging device 34 are connected in parallel with the dc load 35, two ends of the freewheeling diode 31 are connected in parallel with the disconnecting switch 32, and both the discharging switch 36 and the disconnecting switch 32 are controlled by an electric operating mechanism.
In the second line of the present embodiment, one battery fuse 33 is connected to each of both ends of the charging device 34.
In the present embodiment, the anode of the flywheel diode 31 is connected to the anode of the battery pack 4.
In the embodiment, the isolating switch 32 and the discharging switch 36 are both relays, the electric operating mechanism is a lead, and the control unit is connected with the isolating switch 32 and the discharging switch 36 through leads; the control unit is a microprocessor; the voltage acquisition unit is a voltmeter and is used for detecting the discharge voltage.
The microprocessor is connected with the storage battery failure expert analysis module 1 through a wireless module 12, and the wireless module 12 comprises but is not limited to a WiFi module, a Zigbee module and a 4G communication module.
The working process and principle of the automatic charge-discharge module 3 are described in detail below:
in fig. 3, a freewheeling diode and an isolating switch are connected in series in a storage battery loop, so that the isolating switch is switched off when automatic discharging is achieved, the storage battery is discharged, and meanwhile, the storage battery can supply power to a load through the freewheeling diode when alternating current is lost or a charging device stops working.
The automatic charging and discharging module 3 analyzes the monitoring data of the storage battery pack 5 through the control unit, judges whether the storage battery pack 5 has the condition for starting the discharging function in advance, and controls the field storage battery pack 5 through the electric operating mechanism after the condition is met, so that automatic charging and discharging are realized. The field wiring work is reduced, the manpower and material resources are saved, and the operation safety is greatly improved.
When the automatic charging and discharging module 3 carries out automatic discharging, the direct current system is automatically switched from the running state to the discharging working state, constant current discharging is adopted, and the discharging current is 0.1C10And recording information such as discharge voltage, current, discharge capacity and the like in the discharge process. The protection function is required during discharging, and at least comprises discharging termination criterion protection, communication interruption protection, discharging device fault protection, switch position locking protection and the like. The discharge termination criterion comprises the discharge time, the discharge capacity, the monomer voltage, the whole group voltage and the like, and the storage battery is ensured not to be damaged due to over-discharge. After the discharging is finished, the system should switch the direct current system to a charging working state, the charging is carried out in a constant current voltage limiting or constant voltage mode, and information such as charging voltage, charging current and charging capacity is recorded in the charging process. The charging process should provide protective measures including charging parameter protection, temperature protection, communication interruption protection, etc.
3. Storage battery failure expert analysis module 1
The storage battery failure expert analysis module 1 comprises a data conversion unit, a floating charge model, an even charge model, an internal resistance model, a capacity model and an artificial neural network model, wherein the data conversion unit is respectively connected with the floating charge model, the even charge model, the internal resistance model and the capacity model, and the artificial neural network model is respectively connected with the floating charge model, the even charge model, the internal resistance model and the capacity model and is used for judging the performance change trend of the storage battery according to the floating charge, even charge and internal resistance characteristics of the storage battery and giving a predicted value of the capacity of the storage battery.
As shown in fig. 4, a schematic structural diagram of an artificial neural network model is shown, where x is an input layer and y is an output layer.
The storage battery failure expert analysis module 1 is integrated in system software of the field host 11, and the performance change trend of the battery is comprehensively judged by monitoring the change of the dispersion of the battery voltage of the battery relative to the battery, the change of the dispersion of the battery voltage of the battery relative to the whole group of batteries, the change of the internal resistance value of the battery relative to the battery, and the like, so that the capacity of the battery is estimated, and professional maintenance suggestions are provided.
The field host 11 is further provided with a wireless module 12, and the wireless module 12 includes, but is not limited to, a WiFi module, a Zigbee module, and a 4G communication module.
The field host 11 is also connected with a mobile terminal 13 through a wireless module 12, and is used for transmitting the state information of the storage battery and the maintenance suggestion to the mobile terminal 13.
The storage battery failure expert analysis module 1 provides detailed classification processing, monitoring management and other functions for various data stored in a database through matched data acquisition software, realizes the processing, display and release of analysis data, waits for the inquiry of an information processing unit or other systems to call, and provides fault alarm and a friendly man-machine interaction management interface. The real-time running state and the historical running data of the storage battery pack 5 can be checked by engineering maintenance personnel and professional technicians through the field host 11, so that data resource sharing is realized, and the requirement of hierarchical management in the actual use process is met.
4. Battery equalization module 4
The difference between the capacity and the performance of each battery is caused by the production process of the single battery and the like, the difference is inevitably enlarged in the process of charging and discharging the battery pack, and the battery with small capacity and poor performance has an overcharge phenomenon during charging; when discharging, the battery with small capacity and poor performance has over-discharge phenomenon; the capacity utilization rate of the battery pack is lower and lower, the damage of the battery is accelerated in the long term by the vicious circle process, and the service life of the battery pack can be effectively prolonged by adopting the equalizing circuit.
The automatic charging and discharging module 3 switches charging and discharging according to the battery equalization module 4.
As shown in fig. 5, the battery balancing module 4 includes a battery information collecting unit, a balancing strategy calculating unit, and a balancing implementing unit, which are connected in sequence, the balancing implementing unit is connected to the automatic charging and discharging module 3, the battery information collecting unit is used for collecting battery information of the storage battery, the battery information includes voltage, state of charge, temperature, battery manufacturer and cycle number information, and the balancing strategy calculating unit is used for generating state output quantity based on the battery information according to a preset balancing rule, and adjusting the storage battery through the balancing implementing unit.
In this embodiment, the battery information acquisition unit is connected to the battery failure expert analysis module 1 through the wireless module 12.
The battery equalization module 4 mainly comprises three processing steps: battery information acquisition → equalization rule operation → equalization implementation.
1) Battery information collection
The quick and accurate battery information acquisition is the basis for effective equalization; the battery information acquisition unit adopts a 24-bit AD converter with high speed, high precision and high effective bit and a precision standard with high precision (+ -0.05%) and low temperature drift (+ -2 PPM), so that the high consistency and precision of battery information measurement can be realized in any allowable working environment.
2) Equalization rule operation
The equalization rule is to pick out which batteries need to be equalized, and how to equalize, and the operation of the superior equalization rule is the guarantee of effective equalization. Relevant factors such as the state of a battery pack, the voltage of the battery, the SOC of the battery, the temperature, the manufacturer of the battery, the cycle number and the like are integrated in the balancing strategy operation unit, so that the operation result is more in line with the actual requirement, and discharging, charging and dynamic balancing can be realized.
3) Equalization implementation
And the balance realizing unit is used for balancing the corresponding battery according to the balance state output by the balance rule. The equalization realizing unit adopts an efficient lossless charging mode, the charging current of the equalization realizing unit can be adjusted according to the requirements of equalization rules, the maximum current is 2A, point-to-point equalization can be realized, and in the embodiment, the equalization realizing unit is an automatic charging and discharging module 3.
The battery equalization module 4 is used for controlling the charging and discharging of any single battery, so that the floating charging voltage of the single battery can be adjusted, supplemented or discharged on line, the online maintenance and activation functions of the storage battery are achieved, the service life of the storage battery is prolonged, the scrappage of the storage battery is reduced, the cost is saved, the discharge amount of pollutants is reduced, and the purposes of energy conservation, emission reduction and efficiency improvement are achieved.
Through the storage battery maintenance device based on the state self-evaluation provided by the embodiment, a host computer which logs in a site at any time can look up the voltage, current, average difference, internal resistance, temperature, checking charge and discharge data and the like of the battery, and a running inspection worker can acquire various data of the storage battery pack 5 through an interface of the host computer 11 on the site as necessary, analyze the data in a centralized manner and effectively and quickly know the overall running condition of the storage battery; and the function of analyzing and early warning the running state of the direct current system is realized. And a self-learning storage battery online monitoring system can be established, and a storage battery health state evaluation model is established.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. A storage battery maintenance device based on state self-evaluation is characterized by comprising a real-time online monitoring module, a state self-evaluation module and a state self-evaluation module, wherein the real-time online monitoring module is used for collecting, monitoring and storing state data of a storage battery in real time;
the storage battery failure expert analysis module is used for judging the performance change trend of the storage battery according to the state data, judging whether the storage battery meets the discharge condition or not and generating a maintenance suggestion;
and the automatic charging and discharging module is used for automatically switching the charging and discharging of the storage battery according to the judgment result of the storage battery failure expert analysis module.
2. The battery maintenance device based on state self-evaluation according to claim 1, characterized in that the state data comprises voltage, current, temperature and/or internal resistance of the battery.
3. The battery maintenance device based on state self-evaluation according to claim 2, wherein the real-time online monitoring module monitors the internal resistance of the battery in the battery pack by adopting a four-wire system internal resistance test method.
4. The battery maintenance device based on the state self-evaluation according to claim 3, wherein the four-wire system internal resistance test method is specifically that the storage battery pack comprises a first storage battery, a tested storage battery and a second storage battery which are connected in sequence, a negative electrode of the first storage battery is connected with a positive electrode of the tested storage battery, a positive electrode of the second storage battery is connected with a negative electrode of the tested storage battery, and two ends of the positive electrode and the negative electrode of the tested storage battery are respectively connected with a voltage sampling device through two voltage sampling wires; and the negative electrode of the first storage battery and the positive electrode of the second storage battery are respectively connected with a constant-current discharging load through two discharging wires.
5. The device for maintaining the storage battery based on the state self-evaluation as claimed in claim 1, wherein the automatic charging and discharging module comprises a control unit, a voltage acquisition unit, an electric operating mechanism and a charging and discharging unit, the control unit is respectively connected with the electric operating mechanism and the voltage acquisition unit, and the electric operating mechanism is connected with the charging and discharging unit.
6. The storage battery maintenance device based on the state self-evaluation as claimed in claim 5, wherein the charging and discharging unit comprises a storage battery pack, a freewheeling diode, a disconnecting switch, a storage battery fuse, a charging device, a direct current load, a discharging switch and a discharging resistor, the storage battery pack is respectively connected in parallel with a first line and a second line, the first line comprises the discharging switch and the discharging resistor which are sequentially connected, the second line comprises the freewheeling diode, the storage battery fuse and the charging device which are sequentially connected, two ends of the charging device are connected in parallel with the direct current load, two ends of the freewheeling diode are connected in parallel with the disconnecting switch, and the discharging switch and the disconnecting switch are both controlled by the electric operating mechanism.
7. The battery maintenance device based on state self-evaluation according to claim 6, wherein the battery fuse is connected to both ends of the charging equipment in the second line.
8. The storage battery maintenance device based on the state self-evaluation as claimed in claim 1, wherein the storage battery failure expert analysis module comprises a data conversion unit, a floating charge model, an even charge model, an internal resistance model, a capacity model and an artificial neural network model, the data conversion unit is respectively connected with the floating charge model, the even charge model, the internal resistance model and the capacity model, and the artificial neural network model is respectively connected with the floating charge model, the even charge model, the internal resistance model and the capacity model and is used for judging the performance variation trend of the storage battery according to the floating charge, even charge and internal resistance characteristics of the storage battery and giving a predicted value of the capacity of the storage battery.
9. The battery maintenance device based on the state self-evaluation as claimed in claim 1, characterized in that the battery maintenance device further comprises a battery equalization module, and the automatic charging and discharging module further performs charging and discharging switching according to the battery equalization module.
10. The storage battery maintenance device based on the state self-evaluation as claimed in claim 9, wherein the battery equalization module comprises a battery information acquisition unit, an equalization strategy operation unit and an equalization implementation unit which are connected in sequence, the equalization implementation unit is connected with the automatic charging and discharging module, the battery information acquisition unit is used for acquiring battery information of the storage battery, the battery information comprises voltage, state of charge, temperature, battery manufacturer and cycle number information, and the equalization strategy operation unit is used for generating state output quantity based on the battery information according to a preset equalization rule and adjusting the storage battery through the equalization implementation unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010306283.8A CN111487552A (en) | 2020-04-17 | 2020-04-17 | Storage battery maintenance device based on state self-evaluation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010306283.8A CN111487552A (en) | 2020-04-17 | 2020-04-17 | Storage battery maintenance device based on state self-evaluation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111487552A true CN111487552A (en) | 2020-08-04 |
Family
ID=71794945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010306283.8A Pending CN111487552A (en) | 2020-04-17 | 2020-04-17 | Storage battery maintenance device based on state self-evaluation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111487552A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112349988A (en) * | 2020-11-06 | 2021-02-09 | 宇能电气有限公司 | Vehicle storage battery online monitoring device and self-adaptive charging method |
| CN117092543A (en) * | 2023-10-16 | 2023-11-21 | 深圳鹏城新能科技有限公司 | Photovoltaic energy storage battery aging test method, system and medium |
-
2020
- 2020-04-17 CN CN202010306283.8A patent/CN111487552A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112349988A (en) * | 2020-11-06 | 2021-02-09 | 宇能电气有限公司 | Vehicle storage battery online monitoring device and self-adaptive charging method |
| CN112349988B (en) * | 2020-11-06 | 2021-10-26 | 宇能电气有限公司 | Vehicle storage battery online monitoring device and self-adaptive charging method |
| CN117092543A (en) * | 2023-10-16 | 2023-11-21 | 深圳鹏城新能科技有限公司 | Photovoltaic energy storage battery aging test method, system and medium |
| CN117092543B (en) * | 2023-10-16 | 2024-01-26 | 深圳鹏城新能科技有限公司 | Photovoltaic energy storage battery aging test method, system and medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101577438B (en) | Equipment for high-capacity back-up power maintenance based on remote monitoring platform | |
| CN202696179U (en) | Battery management system | |
| CN111413628A (en) | Charging and battery replacing station with battery evaluation function and evaluation method | |
| CN214201710U (en) | Novel storage battery remote maintenance system | |
| CN112349988B (en) | Vehicle storage battery online monitoring device and self-adaptive charging method | |
| CN110908360B (en) | Communication power supply monitoring system and high-frequency switching power supply charging module self-checking method | |
| CN111487552A (en) | Storage battery maintenance device based on state self-evaluation | |
| CN111342534A (en) | Storage battery discharge control system and control method thereof | |
| CN111864889B (en) | Uninterrupted emergency power supply system and power supply method for open-circuit protection of lead-acid storage battery pack | |
| CN111007419A (en) | Transformer substation direct current system running state on-line monitoring system | |
| CN113572183A (en) | Intelligent maintenance circuit and maintenance method for station storage battery | |
| CN112332528A (en) | Uninterrupted power supply system using lithium battery | |
| CN203135572U (en) | Transformer substation DC device state monitoring system | |
| CN211878140U (en) | Storage battery maintenance device based on state self-evaluation | |
| CN107768748A (en) | Communication base station moves energy scheduling method and its scheduling system | |
| CN204928219U (en) | Lead acid battery system and intelligent system | |
| CN213782969U (en) | Uninterrupted power supply system using lithium battery | |
| CN211217608U (en) | Rapid sorting device for retired power batteries | |
| CN109980305A (en) | Communication power supply intelligent maintenance device | |
| CN116404677B (en) | Management system of electric power energy storage system | |
| CN212659977U (en) | Online intelligent management system for base station storage battery | |
| CN209927955U (en) | Power distribution system operation fault monitoring and predicting system | |
| CN115133162A (en) | Remote diagnosis device and method for nuclear capacity state of storage battery | |
| CN210607515U (en) | Intelligent maintenance device for communication power supply | |
| CN107658921A (en) | Communication base station fixed sources of energy management system and its management method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |