CN114384433A - Battery performance early warning method, monitoring platform, early warning system and battery replacement station - Google Patents
Battery performance early warning method, monitoring platform, early warning system and battery replacement station Download PDFInfo
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- CN114384433A CN114384433A CN202011123401.8A CN202011123401A CN114384433A CN 114384433 A CN114384433 A CN 114384433A CN 202011123401 A CN202011123401 A CN 202011123401A CN 114384433 A CN114384433 A CN 114384433A
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/80—Exchanging energy storage elements, e.g. removable batteries
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- 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]
- G01R31/371—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with remote indication, e.g. on external chargers
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- 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
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- 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]
- G01R31/396—Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a battery performance early warning method, a monitoring platform, an early warning system and a battery replacement station, wherein the battery performance early warning method comprises the following steps: acquiring current state information of a target battery system at a battery replacement station or a vehicle end; performing data analysis according to the current state information and pre-acquired system initial information and cell initial information of the target battery system to obtain index data of the target battery system on battery consistency index research and battery performance research; performing comparative analysis on the index data according to a preset index threshold range; and when the abnormal index exceeding the preset index threshold range is determined to exist in the index data, feeding back the early warning information about the abnormal index to an early warning prompt end. The battery performance early warning method can be used for carrying out real-time remote monitoring on the battery system, and early warning is carried out when abnormality occurs, so that the targeted investigation and maintenance can be conveniently carried out in time, the monitoring accuracy and timeliness are improved, and the unattended monitoring function of the battery replacement station is realized.
Description
Technical Field
The invention relates to the technical field of battery performance early warning, in particular to a battery performance early warning method, a monitoring platform, an early warning system and a battery replacement station.
Background
In recent years, the market of electric automobiles is rapidly developed, more and more automobile manufacturers are added, and the electric driving of the automobiles is a necessary trend. At present, the driving range of a pure electric vehicle is basically within 500 kilometers, the actual use requirements of users can be basically met, and the energy supply efficiency becomes a problem which needs to be solved urgently at present. The traditional energy supply mode is a whole vehicle charging mode, the consumed time is long, even if the charging is performed quickly, the consumed time is over 30 minutes, and the convenience is poor. Therefore, the battery replacement mode is favored by more people. The battery replacement mode is that a battery replacement station provides a fully charged battery, the battery replacement process is completed within three minutes, and the detached battery is charged in the station, so that the energy supply efficiency is greatly improved, and the convenience is better.
Although the problem of energy supply efficiency is solved, the power station belongs to heavy asset investment, and the later-stage operation cost is higher. Daily operation, control, inspection, emergent maintenance etc. of trading the power station need a large amount of manual works, and the cost of labor is very high, and manages, monitors through the manual work, and the accuracy is also lower, consequently, unmanned on duty trades the power station and is the inevitable trend of future development, and manages and maintains through digitization, long-range online monitoring, has both reduced the operation cost, can improve the accuracy of control again to targeted inspection and maintenance. The battery system is used as the most core component in the battery replacement station, and inevitably ages in the long-term recycling process, the performance is attenuated to a certain degree, and even cliff type falling occurs, so that the method for remotely monitoring the performance state of the battery on line in real time is provided, the abnormal condition is early warned in time, the normal operation of the battery system in the battery replacement station is ensured, the performance meets the use requirements of users, and the method is the key for realizing the unattended battery replacement station.
Disclosure of Invention
The technical purpose to be achieved by the embodiment of the invention is to provide a battery performance early warning method, a monitoring platform, an early warning system and a power exchanging station, which are used for solving the problems that daily operation, monitoring, inspection tour, emergency maintenance and the like of the current power exchanging station require a large amount of labor, but the labor cost is high, and the accuracy of management and monitoring through the labor is low.
In order to solve the above technical problem, an embodiment of the present invention provides a battery performance early warning method, including:
acquiring current state information of a target battery system at a battery replacement station or a vehicle end;
performing data analysis according to the current state information and pre-acquired system initial information and cell initial information of the target battery system to obtain index data of the target battery system on battery consistency index research and battery performance research;
performing comparative analysis on the index data according to a preset index threshold range;
and when the abnormal index exceeding the preset index threshold range is determined to exist in the index data, feeding back the early warning information about the abnormal index to an early warning prompt end.
Preferably, the battery performance early warning method further includes:
and receiving and storing the uploaded maintenance log record, wherein the maintenance log record is a log record for maintenance processing of maintenance personnel according to the early warning information.
Further, the battery performance early warning method further includes:
and receiving input updating index threshold data, and updating the preset index threshold range according to the updating index threshold data.
Specifically, according to the battery performance early warning method, the initial information of the battery system includes at least one of the following information: battery pack manufacturer, battery system code, production date, carrying vehicle type, connection mode, nominal voltage, nominal capacity, nominal energy and initial available energy;
the cell initial information at least comprises at least one of the following information: the battery cell manufacturer, the battery cell model, the battery cell type and the battery cell nominal capacity.
Specifically, according to the battery performance early warning method, the current state information includes at least one of the following information: the current time node, the current total charge and discharge voltage, the current total charge and discharge current, the current residual electric quantity, the current voltage of the single battery cell, the current probe temperature of a preset acquisition point and the current total mileage.
Preferably, in the battery performance early warning method, the index types of the research on the battery consistency index in the index data include: a charge consistency index and a discharge consistency index;
wherein, the charge consistency index comprises: the consistency variance of the cell charging cut-off voltage, the 3 sigma evaluation of the cell charging cut-off voltage consistency, the cell charging cut-off pressure difference, the cell number of the highest charging cut-off voltage, the probe charging cut-off temperature difference, the probe number of the highest charging cut-off temperature, the charging temperature rise of the probe and the probe number of the maximum charging temperature rise;
the discharge consistency index includes: the method comprises the following steps of evaluating the consistency variance of the cell discharge cut-off voltage, the consistency of the cell discharge cut-off voltage by 3 sigma, the cell discharge cut-off pressure difference, the cell number of the highest discharge cut-off voltage, the discharge cut-off temperature difference of a probe, the probe number of the highest discharge cut-off temperature, the discharge temperature rise of the probe and the probe number of the maximum discharge temperature rise.
Specifically, according to the battery performance early warning method, the index types of the index data related to the battery performance research include: the current available capacity of the battery system, the current available energy of the battery system, the battery health state and the hundred kilometers energy attenuation rate.
Another preferred embodiment of the present invention further provides a monitoring platform, including:
the acquisition module is used for acquiring the current state information of the target battery system at the battery replacement station or the vehicle end;
the first processing module is used for carrying out data analysis according to the current state information and the pre-acquired system initial information and cell initial information of the target battery system to obtain index data of the target battery system on battery consistency index research and battery performance research;
the second processing module is used for carrying out comparative analysis on the index data according to a preset index threshold range;
and the early warning module is used for feeding back early warning information about the abnormal indexes to the early warning prompt end when the abnormal indexes exceeding the preset index threshold range are determined to exist in the index data.
Preferably, the monitoring platform as described above, further comprising:
and the maintenance log module is used for receiving and storing the uploaded maintenance log records, wherein the maintenance log records are log records for maintenance processing of maintenance personnel according to the early warning information.
Further, the monitoring platform as described above further includes:
and the updating module is used for receiving the input updating index threshold data and updating the preset index threshold range according to the updating index threshold data.
Specifically, as described above for the monitoring platform, the battery system initial information includes at least one of the following information: battery pack manufacturer, battery system code, production date, carrying vehicle type, connection mode, nominal voltage, nominal capacity, nominal energy and initial available energy;
the cell initial information at least comprises at least one of the following information: the battery cell manufacturer, the battery cell model, the battery cell type and the battery cell nominal capacity.
Specifically, as described above for the monitoring platform, the current status information includes at least one of the following information: the system comprises a time node, total charging and discharging voltage, total charging and discharging current, residual electric quantity, single cell voltage of the battery cell, probe temperature of a preset acquisition point and total mileage.
Preferably, in the monitoring platform, the types of indicators in the indicator data related to the battery consistency indicator research include: a charge consistency index and a discharge consistency index;
wherein, the charge consistency index comprises: the consistency variance of the cell charging cut-off voltage, the 3 sigma evaluation of the cell charging cut-off voltage consistency, the cell charging cut-off pressure difference, the cell number of the highest charging cut-off voltage, the probe charging cut-off temperature difference, the probe number of the highest charging cut-off temperature, the charging temperature rise of the probe and the probe number of the maximum charging temperature rise;
the discharge consistency index includes: the method comprises the following steps of evaluating the consistency variance of the cell discharge cut-off voltage, the consistency of the cell discharge cut-off voltage by 3 sigma, the cell discharge cut-off pressure difference, the cell number of the highest discharge cut-off voltage, the discharge cut-off temperature difference of a probe, the probe number of the highest discharge cut-off temperature, the discharge temperature rise of the probe and the probe number of the maximum discharge temperature rise.
Specifically, as described above for the monitoring platform, the types of indicators related to the battery performance study in the indicator data include: the current available capacity of the battery system, the current available energy of the battery system, the battery health state and the hundred kilometers energy attenuation rate.
Still another preferred embodiment of the present invention provides a battery performance early warning system, including: the monitoring platform comprises a battery system and the monitoring platform, wherein the battery system is in communication connection with the monitoring platform.
Still another preferred embodiment of the present invention further provides a power swapping station, including: the battery performance early warning system is as described above.
Compared with the prior art, the battery performance early warning method, the monitoring platform, the early warning system and the battery replacement station provided by the embodiment of the invention at least have the following beneficial effects:
according to the battery performance early warning method, the target battery system is remotely monitored in real time, early warning is carried out when abnormal monitoring is carried out, so that maintenance personnel can know that the target battery system has abnormal functions, and then the maintenance personnel can conveniently carry out targeted investigation and maintenance on the target battery system in time, the manual requirements of daily operation, monitoring, inspection tour and the like of the battery replacement station are effectively reduced, the labor cost is reduced, meanwhile, the accuracy and timeliness of monitoring are improved due to real-time remote monitoring, and the unattended monitoring function of the battery replacement station is realized. And the normal use of the target battery system is not influenced, and the use safety of the target battery system is ensured.
Drawings
FIG. 1 is a schematic flow chart of a battery performance warning method according to the present invention;
fig. 2 is a schematic structural diagram of the monitoring platform of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help the full understanding of the embodiments of the present invention. Thus, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
In the embodiments provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may be determined from a and/or other information.
Referring to fig. 1, a preferred embodiment of the present invention provides a battery performance early warning method, including:
step S101, acquiring current state information of a target battery system at a battery replacement station or a vehicle end;
step S102, performing data analysis according to the current state information and pre-acquired system initial information and cell initial information of the target battery system to obtain index data of the target battery system on battery consistency index research and battery performance research;
step S103, comparing and analyzing the index data according to a preset index threshold range;
and step S104, when the abnormal index exceeding the preset index threshold range is determined to exist in the index data, feeding back early warning information about the abnormal index to an early warning prompt end.
In an embodiment of the present invention, a battery system belonging to a battery swapping station, i.e., a battery pack, is taken as an example of a target battery system for specific description. When the monitoring platform carries out early warning monitoring on the battery performance of the target battery system, the current state information of the target battery system can be obtained in real time, wherein the current state information comprises but is not limited to charging data information when the battery system is located in a battery replacement station and running data information, namely discharging data information, when the battery system is installed in a vehicle, and the continuity and timeliness of data obtaining are favorably ensured; performing data analysis on the current state information and the system initial information and the cell initial information of the target battery system obtained through preselection to obtain research results, namely index data, of the target battery system on battery consistency index research and battery performance research; then, for each index type, performing comparative analysis on the index data according to the corresponding preset index threshold range, and if the corresponding values of the indexes of all the index types in the index data are within the corresponding preset index threshold range, determining that the current performance state of the target battery system is normal without performing operations such as maintenance and the like; if the index data of at least one index type exceeds the corresponding preset index threshold range, determining that the current performance state of the target battery system is abnormal, and sending the early warning information about the abnormal index to an early warning prompt end at the moment so that a maintenance worker can know that the target battery system has abnormal functions by the aid of the technology, and then the maintenance worker can perform targeted investigation and maintenance on the target battery system in time. The data analysis method determines the analyzed data according to specific needs, for example: if the data needing to be analyzed is the consistency variance of the charging cut-off voltage or the consistency variance of the discharging cut-off voltage, the adopted data analysis method is an analysis of variance method, and if the data needing to be analyzed is the available capacity of the target battery system, the method of a support vector machine is adopted.
In conclusion, the battery performance early warning method provided by the invention has the advantages that the target battery system is remotely monitored in real time, and early warning is carried out when abnormal monitoring is carried out, so that maintenance personnel can know that the target battery system has abnormal functions, and further the maintenance personnel can conveniently carry out targeted investigation and maintenance on the target battery system in time, so that the manual requirements of daily operation, monitoring, inspection tour and the like of the battery replacement station are effectively reduced, the labor cost is reduced, meanwhile, the real-time remote monitoring also improves the monitoring accuracy and timeliness, and the unattended monitoring function of the battery replacement station is realized. And the normal use of the target battery system is not influenced, and the use safety of the target battery system is ensured.
Preferably, the power exchanging station is an unattended power exchanging station or a less attended power exchanging station.
Optionally, the early warning prompt terminal may be a part of the monitoring platform, or may be a client terminal in communication connection with the monitoring platform.
Preferably, the battery performance early warning method further includes:
and receiving and storing the uploaded maintenance log record, wherein the maintenance log record is a log record for maintenance processing of maintenance personnel according to the early warning information.
In a preferred embodiment of the present invention, after the early warning information about the abnormal index is fed back to the early warning prompt end, the maintenance personnel can perform troubleshooting and maintenance according to the early warning information, and upload the maintenance log record after the troubleshooting and maintenance of the maintenance personnel, receive the maintenance log record uploaded by the maintenance personnel at this time, store the maintenance log record, and leave the end for the maintenance.
Further, the battery performance early warning method further includes:
and receiving input updating index threshold data, and updating the preset index threshold range according to the updating index threshold data.
In a preferred embodiment of the present invention, the monitoring platform may receive a preset index threshold range of a certain index type, update the index threshold data after the change due to the influence of factors such as technical progress or battery system service time, and update the preset index threshold range according to the updated index threshold data, so as to ensure the accuracy of a monitoring result obtained when the monitoring platform monitors the target battery system in real time, and avoid the problems that the preset index threshold range has a large error from the real index threshold range due to the uncorrected preset index threshold range, and further the monitoring result is wrong, fails to give an early warning and maintain in time, and even the target battery system is damaged.
Specifically, according to the battery performance early warning method, the initial information of the battery system includes at least one of the following information: battery pack manufacturer, battery system code, production date, carrying vehicle type, connection mode, nominal voltage, nominal capacity, nominal energy and initial available energy;
the cell initial information at least comprises at least one of the following information: the battery cell manufacturer, the battery cell model, the battery cell type and the battery cell nominal capacity.
In an embodiment of the present invention, initial information of a battery system and initial information of a battery cell are illustrated.
The battery system initial information includes at least one of the following information, production information on the battery system, for example: battery pack manufacturer, battery system code and/or date of manufacture; the installation information on the battery system is, for example: carrying vehicle types and/or connection modes; performance data on battery systems such as: nominal voltage, nominal capacity, nominal energy, initial available energy, etc.
The cell initial information includes at least one of the following information, for example, production information on the cell: a battery cell manufacturer; the mounting information on the cell is, for example: the cell type and the cell type; performance data on the cells are for example: nominal capacity of the cell, etc.
Specifically, according to the battery performance early warning method, the current state information includes at least one of the following information: the system comprises a time node, total charging and discharging voltage, total charging and discharging current, residual electric quantity, single cell voltage of the battery cell, probe temperature of a preset acquisition point and total mileage.
In a specific embodiment of the present invention, the obtained current state information of the target battery system is exemplified, for example: the time node is used for recording the current monitoring time, so that the time node is convenient to distinguish on a time axis for each monitoring, the data confusion is avoided, and meanwhile, calculation can be carried out according to the time node, such as the voltage, the temperature and/or the residual electric quantity change within a period of time; the total charge-discharge voltage, the total charge-discharge current, the residual electric quantity, the cell monomer voltage and the like are used for representing the current running state of the battery system; the probe temperature of the preset acquisition point is used for monitoring the temperature of each preset acquisition point in the target battery system through a temperature probe such as a temperature sensor; the total mileage can be used to indirectly represent the service life of the battery and to calculate an energy decay rate with respect to the traveled mileage.
Preferably, in the battery performance early warning method, the index types of the research on the battery consistency index in the index data include: a charge consistency index and a discharge consistency index;
wherein, the charge consistency index comprises: the consistency variance of the cell charging cut-off voltage, the 3 sigma evaluation of the cell charging cut-off voltage consistency, the cell charging cut-off pressure difference, the cell number of the highest charging cut-off voltage, the probe charging cut-off temperature difference, the probe number of the highest charging cut-off temperature, the charging temperature rise of the probe and the probe number of the maximum charging temperature rise;
the discharge consistency index includes: the method comprises the following steps of evaluating the consistency variance of the cell discharge cut-off voltage, the consistency of the cell discharge cut-off voltage by 3 sigma, the cell discharge cut-off pressure difference, the cell number of the highest discharge cut-off voltage, the discharge cut-off temperature difference of a probe, the probe number of the highest discharge cut-off temperature, the discharge temperature rise of the probe and the probe number of the maximum discharge temperature rise.
In another embodiment of the present invention, the types of indicators in the indicator data for the battery consistency indicator study include: a charge consistency index and a discharge consistency index;
wherein, the charge consistency index comprises: the consistency variance of the cell charging cut-off voltage, the 3 sigma evaluation of the cell charging cut-off voltage consistency, the cell charging cut-off pressure difference (the difference value between the highest charging cut-off voltage and the lowest charging cut-off voltage) and the cell number of the highest charging cut-off voltage, which are obtained according to the cell monomer voltage of each cell, are used for representing the voltage data difference among the cells in the target battery system in the charging process; and the probe charging cut-off temperature difference (the difference value between the highest charging cut-off temperature and the lowest charging cut-off temperature), the probe number of the highest charging cut-off temperature, the charging temperature rise (the difference value between the temperature at the time of charge cut-off and the temperature before charging) of the probe and the probe number of the maximum charging temperature rise, which are obtained according to the probe temperature of each preset acquisition point, are used for representing the temperature data difference among the battery cores in the target battery system in the charging process.
Similarly, the discharge consistency index includes: the cell number of the cell, which is used for representing the voltage data difference among the cells in the target battery system in the discharging process, is used for evaluating the cell discharging cut-off voltage consistency variance, the cell discharging cut-off voltage consistency 3 sigma, the cell discharging cut-off voltage difference (the difference value between the highest discharging cut-off voltage and the lowest discharging cut-off voltage) and the highest discharging cut-off voltage according to the cell monomer voltage of each cell; and the probe discharge cut-off temperature difference (the difference between the highest discharge cut-off temperature and the lowest discharge cut-off temperature) obtained according to the probe temperature of each preset acquisition point, the probe number of the highest discharge cut-off temperature, the discharge temperature rise (the difference between the temperature at the discharge cut-off and the temperature before the discharge starts) of the probe, and the probe number of the maximum discharge temperature rise are used for representing the temperature data difference between the battery cores in the target battery system in the discharge process.
Specifically, according to the battery performance early warning method, the index types of the index data related to the battery performance research include: the current available capacity of the battery system, the current available energy of the battery system, the battery health state and the hundred kilometers energy attenuation rate.
In a preferred embodiment of the present invention, the types of indicators in the indicator data related to the battery performance study include: the current available capacity of the battery system, the current available energy of the battery system, the battery health state and the hundred kilometer energy attenuation rate are used for specifically describing the electricity storage capacity of the target battery system.
Specifically, in an embodiment of the present invention, the above data analysis is performed by taking the monitored charging process and discharging process of a certain target battery system as an example, and the obtained index data of the target battery system about the battery consistency index research and the battery performance research is shown in table 1,
TABLE 1 Battery System Battery consistency index and Battery Performance Studies
Referring to fig. 2, another preferred embodiment of the present invention also provides a monitoring platform, including:
an obtaining module 201, configured to obtain current state information of a target battery system located at a power change station or a vehicle end;
the first processing module 202 is configured to perform data analysis according to the current state information and pre-acquired system initial information and cell initial information of the target battery system to obtain index data of the target battery system on battery consistency index research and battery performance research;
the second processing module 203 is configured to perform comparative analysis on the index data according to a preset index threshold range; the early warning module 204 is configured to, when it is determined that there is an abnormal index whose index data exceeds a preset index threshold range, feed back early warning information about the abnormal index to an early warning prompt end.
Preferably, the monitoring platform as described above, further comprising:
and the maintenance log module is used for receiving and storing the uploaded maintenance log records, wherein the maintenance log records are log records for maintenance processing of maintenance personnel according to the early warning information.
Further, the monitoring platform as described above further includes:
and the updating module is used for receiving the input updating index threshold data and updating the preset index threshold range according to the updating index threshold data.
Specifically, as described above for the monitoring platform, the battery system initial information includes at least one of the following information: battery pack manufacturer, battery system code, production date, carrying vehicle type, connection mode, nominal voltage, nominal capacity, nominal energy and initial available energy;
the cell initial information at least comprises at least one of the following information: the battery cell manufacturer, the battery cell model, the battery cell type and the battery cell nominal capacity.
Specifically, as described above for the monitoring platform, the current status information includes at least one of the following information: the system comprises a time node, total charging and discharging voltage, total charging and discharging current, residual electric quantity, single cell voltage of the battery cell, probe temperature of a preset acquisition point and total mileage.
Preferably, in the monitoring platform as described above, the index content of the index data about the battery consistency index research includes: a charge consistency index and a discharge consistency index;
wherein, the charge consistency index comprises: the consistency variance of the cell charging cut-off voltage, the 3 sigma evaluation of the cell charging cut-off voltage consistency, the cell charging cut-off pressure difference, the cell number of the highest charging cut-off voltage, the probe charging cut-off temperature difference, the probe number of the highest charging cut-off temperature, the charging temperature rise of the probe and the probe number of the maximum charging temperature rise;
the discharge consistency index includes: the method comprises the following steps of evaluating the consistency variance of the cell discharge cut-off voltage, the consistency of the cell discharge cut-off voltage by 3 sigma, the cell discharge cut-off pressure difference, the cell number of the highest discharge cut-off voltage, the discharge cut-off temperature difference of a probe, the probe number of the highest discharge cut-off temperature, the discharge temperature rise of the probe and the probe number of the maximum discharge temperature rise.
Specifically, as described above in the monitoring platform, the index content of the index data related to the battery performance research includes: the current available capacity of the battery system, the current available energy of the battery system, the battery health state and the hundred kilometers energy attenuation rate.
The embodiment of the monitoring platform of the invention is the monitoring platform corresponding to the embodiment of the battery early warning method, and all implementation means in the embodiment of the battery early warning method are suitable for the embodiment of the monitoring platform, and the same technical effect can be achieved.
Still another preferred embodiment of the present invention provides a battery performance early warning system, including: the monitoring platform comprises a battery system and the monitoring platform, wherein the battery system is in communication connection with the monitoring platform.
In another preferred embodiment of the present invention, a battery performance early warning system is further provided, where the battery performance early warning system includes a plurality of battery systems and a monitoring platform in communication connection with each battery system, where the monitoring platform is connected to the battery systems to obtain initial information of the battery systems, that is, system initial information and cell initial information, and monitors current state information of the battery systems in real time to obtain research results of battery consistency index research and battery performance research of the battery systems through data analysis, and obtains information such as vehicle types and connection modes according to the information in the system initial information. The corresponding preset index threshold value range is obtained, and contrastive analysis is carried out, so that the current performance state of the target battery system is determined to be abnormal, the early warning information about the abnormal index is sent to the early warning prompt end at the moment, so that a maintenance worker can know that the target battery system has abnormal functions through the technology, and then the maintenance worker can conveniently and timely carry out targeted investigation and maintenance on the target battery system, the cost is reduced, the monitoring accuracy and timeliness are improved, and the unattended monitoring function of the battery replacement station is realized.
Still another preferred embodiment of the present invention further provides a power swapping station, including: the battery performance early warning system is as described above.
In a further preferred embodiment of the present invention, a battery replacement station is further provided, where the battery replacement station may be an unattended battery replacement station or an attended battery replacement station, and the battery replacement station employs the battery performance early warning system, so that early warning is timely performed when a problem is found, costs of daily operation management, monitoring, inspection tour and the like manually are reduced, monitoring efficiency and accuracy are improved, normal use of a target battery system is not affected, and use safety of the target battery system is favorably ensured.
Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A battery performance early warning method is characterized by comprising the following steps:
acquiring current state information of a target battery system at a battery replacement station or a vehicle end;
performing data analysis according to the current state information and pre-acquired system initial information and cell initial information of the target battery system to obtain index data of the target battery system on battery consistency index research and battery performance research;
performing comparative analysis on the index data according to a preset index threshold range;
and when determining that abnormal indexes exceeding the preset index threshold range exist in the index data, feeding back early warning information about the abnormal indexes to an early warning prompt end.
2. The battery performance early warning method according to claim 1, further comprising:
and receiving and storing the uploaded maintenance log record, wherein the maintenance log record is a log record for maintenance processing of maintenance personnel according to the early warning information.
3. The battery performance early warning method according to claim 1, further comprising:
and receiving input updating index threshold data, and updating the preset index threshold range according to the updating index threshold data.
4. The battery performance early warning method according to claim 1, wherein the battery system initial information includes at least one of the following information: battery pack manufacturer, battery system code, production date, carrying vehicle type, connection mode, nominal voltage, nominal capacity, nominal energy and initial available energy;
the cell initial information at least comprises at least one of the following information: the battery cell manufacturer, the battery cell model, the battery cell type and the battery cell nominal capacity.
5. The battery performance early warning method according to claim 1, wherein the current state information includes at least one of the following information: the system comprises a time node, total charging and discharging voltage, total charging and discharging current, residual electric quantity, single cell voltage of the battery cell, probe temperature of a preset acquisition point and total mileage.
6. The battery performance early warning method according to claim 1, wherein the index types of the index data about the battery consistency index research comprise: a charge consistency index and a discharge consistency index;
wherein, the charge consistency index comprises: the consistency variance of the cell charging cut-off voltage, the 3 sigma evaluation of the cell charging cut-off voltage consistency, the cell charging cut-off pressure difference, the cell number of the highest charging cut-off voltage, the probe charging cut-off temperature difference, the probe number of the highest charging cut-off temperature, the charging temperature rise of the probe and the probe number of the maximum charging temperature rise;
the discharge consistency index includes: the method comprises the following steps of evaluating the consistency variance of the cell discharge cut-off voltage, the consistency of the cell discharge cut-off voltage by 3 sigma, the cell discharge cut-off pressure difference, the cell number of the highest discharge cut-off voltage, the discharge cut-off temperature difference of a probe, the probe number of the highest discharge cut-off temperature, the discharge temperature rise of the probe and the probe number of the maximum discharge temperature rise.
7. The battery performance early warning method according to claim 1, wherein the index types of the index data related to the battery performance research include: the current available capacity of the battery system, the current available energy of the battery system, the battery health state and the hundred kilometers energy attenuation rate.
8. A monitoring platform, comprising:
the acquisition module is used for acquiring the current state information of the target battery system at the battery replacement station or the vehicle end;
the first processing module is used for performing data analysis according to the current state information and the pre-acquired system initial information and cell initial information of the target battery system to obtain index data of the target battery system on battery consistency index research and battery performance research;
the second processing module is used for carrying out comparative analysis on the index data according to a preset index threshold range;
and the early warning module is used for feeding back early warning information about the abnormal index to an early warning prompt end when the abnormal index exceeding the preset index threshold range is determined to exist in the index data.
9. A battery performance early warning system, comprising: a battery system and a monitoring platform as claimed in claim 8, wherein the battery system is communicatively connected to the monitoring platform.
10. A power swapping station, comprising: the battery performance warning system of claim 9.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114860055A (en) * | 2022-05-31 | 2022-08-05 | 章鱼博士智能技术(上海)有限公司 | Battery module front-end page display method and device and electronic equipment |
| CN115431830A (en) * | 2022-08-04 | 2022-12-06 | 广东易积网络股份有限公司 | Express enterprise-oriented battery replacement system and method and storage medium |
| CN115877221A (en) * | 2022-12-21 | 2023-03-31 | 广州辰创科技发展有限公司 | Power supply health state early warning platform |
| CN116093467A (en) * | 2023-04-10 | 2023-05-09 | 南京邮电大学 | Self-adaptive control method for battery management system of electric tool |
| CN116176353A (en) * | 2023-04-26 | 2023-05-30 | 深圳艾斯特创新科技有限公司 | Monitoring method, device, equipment and storage medium for high-performance battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114860055A (en) * | 2022-05-31 | 2022-08-05 | 章鱼博士智能技术(上海)有限公司 | Battery module front-end page display method and device and electronic equipment |
| CN114860055B (en) * | 2022-05-31 | 2024-05-10 | 章鱼博士智能技术(上海)有限公司 | Method and device for displaying front-end page of battery module and electronic equipment |
| CN115431830A (en) * | 2022-08-04 | 2022-12-06 | 广东易积网络股份有限公司 | Express enterprise-oriented battery replacement system and method and storage medium |
| CN115877221A (en) * | 2022-12-21 | 2023-03-31 | 广州辰创科技发展有限公司 | Power supply health state early warning platform |
| CN115877221B (en) * | 2022-12-21 | 2023-11-10 | 广州辰创科技发展有限公司 | Power supply health state early warning platform |
| CN116093467A (en) * | 2023-04-10 | 2023-05-09 | 南京邮电大学 | Self-adaptive control method for battery management system of electric tool |
| CN116176353A (en) * | 2023-04-26 | 2023-05-30 | 深圳艾斯特创新科技有限公司 | Monitoring method, device, equipment and storage medium for high-performance battery |
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