CN116683051A - Safety management method and device based on retired battery - Google Patents
Safety management method and device based on retired battery Download PDFInfo
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- 238000007726 management method Methods 0.000 title claims abstract description 86
- 230000036541 health Effects 0.000 claims abstract description 64
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- 230000008569 process Effects 0.000 description 4
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- 239000005955 Ferric phosphate Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000002591 computed tomography Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229940032958 ferric phosphate Drugs 0.000 description 2
- 229910000398 iron phosphate Inorganic materials 0.000 description 2
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/54—Reclaiming serviceable parts of waste accumulators
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F18/24—Classification techniques
- G06F18/241—Classification techniques relating to the classification model, e.g. parametric or non-parametric approaches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H01M10/46—Accumulators structurally combined with charging apparatus
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- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
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- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/52—Reclaiming serviceable parts of waste cells or batteries, e.g. recycling
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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Abstract
The invention relates to the field of battery safety management, and discloses a safety management method and device based on retired batteries, wherein the method comprises the following steps: performing surface detection on the retired battery to obtain a surface detection result, and screening out the retired battery reaching the standard; internal scanning is carried out on the standard-reaching retired battery to obtain internal parameters of the standard-reaching retired battery, a battery analysis model of the standard-reaching retired battery is established, the battery health state of the standard-reaching retired battery is analyzed, and the target retired battery in the standard-reaching retired battery is identified; analyzing the structural characteristics of the target retired battery, calculating the structural similarity of the structural characteristics, and carrying out consistency classification on the target retired battery to obtain classified batteries; constructing a recombination environment of the classified batteries, recombining the classified batteries to obtain a retired battery pack, and performing distributed equalization processing on the retired battery pack to obtain an equalized battery pack; and carrying out heat management on the balanced battery pack to obtain the safety management battery. The invention can improve the safety of retired battery management.
Description
Technical Field
The invention relates to the field of battery safety management, in particular to a safety management method and device based on retired batteries.
Background
The retired battery is a battery which cannot meet market demands and is retired, the safety management of the retired battery can reduce the environmental pollution of the retired battery, and the secondary utilization efficiency of the retired battery can be improved.
The safety management of the retired battery at present mainly carries out unified reorganization and utilization on the healthy retired battery after carrying out safety state analysis on the retired battery, and the method does not consider the difference of capacity, internal resistance and other parameters among different batteries, so that the obtained reorganized battery after reorganizing the retired battery has instability, and the management of the retired battery is not safe enough.
Disclosure of Invention
In order to solve the problems, the invention provides a safety management method and a safety management device based on retired batteries, which can improve the safety of retired battery management.
In a first aspect, the present invention provides a safety management method based on retired batteries, including:
obtaining a retired battery, carrying out surface detection on the retired battery to obtain a surface detection result, and screening out the retired battery reaching the standard based on the surface detection result;
performing internal scanning on the standard-reaching retired battery to obtain internal parameters of the standard-reaching retired battery, establishing a battery analysis model of the standard-reaching retired battery according to the internal parameters, analyzing the battery health state of the standard-reaching retired battery according to the battery analysis model, and identifying a target retired battery in the standard-reaching retired battery according to the battery health state;
Analyzing the structural characteristics of the target retired battery according to the battery health state, calculating the structural similarity of the structural characteristics, and carrying out consistency classification on the target retired battery according to the structural similarity to obtain classified batteries;
constructing a recombination environment of the classified batteries, recombining the classified batteries based on the recombination environment to obtain retired battery packs, and performing distributed equalization processing on the retired battery packs to obtain equalized battery packs;
and performing thermal management on the balanced battery pack to obtain a safety management battery.
In one possible implementation manner of the first aspect, the screening out the retired battery reaching the standard based on the surface detection result includes:
identifying an abnormal result in the surface detection result;
calculating an outlier of the outlier result using the formula:
wherein YC represents an outlier, ln (a-1) an outlier function, a.beta.Euler constant, a c Representing the c-th abnormal result, θ representing an abnormal threshold of the abnormal result;
based on the abnormal value, performing risk analysis on the retired battery to obtain a risk analysis result;
and screening out the retired battery reaching the standard according to the risk analysis result.
In one possible implementation manner of the first aspect, the establishing a battery analysis model of the standard-compliant retired battery according to the internal parameters includes:
analyzing the parameter characteristics of the internal parameters;
constructing a parameter relation of the internal parameters according to the parameter characteristics;
determining the internal logic of the battery which is out of service after reaching standards according to the parameter relation;
according to the internal logic of the battery, configuring an analysis rule of the standard-reaching retired battery;
and establishing a battery analysis model of the standard-reaching retired battery according to the analysis rule.
In a possible implementation manner of the first aspect, the analyzing, according to the battery analysis model, a battery health state of the standard-compliant retired battery includes:
extracting parameters to be analyzed of the standard-reaching retired battery by utilizing an extraction layer in the battery analysis model;
digging the parameter characteristics of the parameter to be analyzed by utilizing the digging layer of the battery analysis model;
according to the parameter characteristics, calculating the battery health of the standard-reaching retired battery by utilizing a decision layer of the battery analysis model;
and analyzing the battery health state of the standard-reaching retired battery according to the battery health degree.
In a possible implementation manner of the first aspect, the calculating, according to the parameter feature, the battery health of the up-to-standard retired battery by using a decision layer of the battery analysis model includes:
calculating the current battery capacity of the standard-reaching retired battery according to the parameter characteristics;
according to the current battery capacity, calculating the battery health of the standard-reaching retired battery by using the following formula:
wherein DC SOH The method is characterized in that the method comprises the steps of representing the health degree of a battery, wherein C represents the current battery capacity, deltaD represents the number of times of charging and discharging of the standard-reaching retired battery, and E represents the rated capacity of the standard-reaching retired battery.
In a possible implementation manner of the first aspect, the analyzing, according to the battery health status, a structural feature of the target retired battery includes:
extracting structural health parameters of the target retired battery according to the battery health state;
analyzing parameter attributes of the structural health parameters;
identifying the structural performance of the target retired battery according to the parameter attribute;
and analyzing the structural characteristics of the target retired battery according to the structural performance.
In a possible implementation manner of the first aspect, the calculating the structural similarity of the structural feature includes:
Calculating the structural similarity of the structural features by using the following formula:
wherein the XSD represents structural similarity, E d Representing the abscissa position of the structural feature, F d Representing the ordinate position of the structural feature, h representing the number of structural features, and d representing the d-th structural feature.
In a possible implementation manner of the first aspect, the performing a distributed equalization process on the retired battery pack to obtain an equalized battery pack includes:
identifying a combination form of the retired battery pack;
calculating the unbalance degree of the retired battery pack according to the combination form;
based on the unbalance, configuring an equalization rule of the retired battery pack;
and executing distributed equalization processing on the retired battery pack by using the equalization rule to obtain the equalization battery pack.
In a possible implementation manner of the first aspect, the calculating, according to the combination form, an imbalance degree of the retired battery pack:
according to the combination form, calculating the unbalance degree of the retired battery pack by using the following formula:
where JH represents the imbalance, s represents the number of cells in the retired battery pack, R p The p-th battery in the retired battery pack is represented, W represents the voltage value of the retired battery pack, and SBU represents the combination form. In a second aspect, the present invention provides a retired battery-based security management device, comprising:
The battery surface detection module is used for acquiring the retired battery, carrying out surface detection on the retired battery to obtain a surface detection result, and screening out the standard retired battery of the retired battery based on the surface detection result;
the battery internal detection module is used for carrying out internal scanning on the standard-reaching retired battery to obtain internal parameters of the standard-reaching retired battery, establishing a battery analysis model of the standard-reaching retired battery according to the internal parameters, analyzing the battery health state of the standard-reaching retired battery according to the battery analysis model, and identifying a target retired battery in the standard-reaching retired battery according to the battery health state;
the battery classification module is used for analyzing the structural characteristics of the target retired battery according to the battery health state, calculating the structural similarity of the structural characteristics, and carrying out consistency classification on the target retired battery according to the structural similarity to obtain classified batteries;
the battery equalization processing module is used for constructing a recombination environment of the classified batteries, recombining the classified batteries based on the recombination environment to obtain retired battery packs, and performing distributed equalization processing on the retired battery packs to obtain equalized battery packs;
And the battery thermal management module is used for carrying out thermal management on the balanced battery pack to obtain a safety management battery.
Compared with the prior art, the technical principle and beneficial effect of this scheme lie in:
according to the embodiment of the invention, the retired battery can be subjected to preliminary detection by carrying out surface detection on the retired battery to obtain a surface detection result, so that data support is provided for screening out batteries with external surfaces meeting requirements. According to the embodiment of the invention, the battery analysis model of the standard-reaching retired battery is established according to the internal parameters, so that the standard-reaching retired battery can be better subjected to internal analysis through the established model, and the safety of battery management screening is improved. Further, according to the embodiment of the invention, the target retired battery in the standard retired battery is identified according to the battery health state, so that the standard retired battery can be subjected to secondary screening, the reserved battery is safer, and the safety of retired battery management is improved. And thirdly, according to the structural similarity, the target retired battery is subjected to consistency classification, and the classified batteries can be obtained to classify the similar performance, so that rejection after battery recombination is reduced, and the safety of retired battery management is improved. Finally, the embodiment of the invention obtains the balanced battery pack by executing the distributed balancing treatment on the retired battery pack, so that the rejection among the single batteries can be further eliminated, the stability of the retired battery pack is improved, and the safety of the retired battery management is improved. Therefore, the safety management method and the safety management device based on the retired battery can improve the safety of retired battery management.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic flow chart of a safety management method based on retired battery according to an embodiment of the invention;
FIG. 2 is a schematic block diagram of a safety management device based on retired battery according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an internal structure of an electronic device implementing a retired battery-based security management method according to an embodiment of the invention.
Detailed Description
It should be understood that the detailed description is presented by way of example only and is not intended to limit the invention.
The embodiment of the invention provides a safety management method based on a retired battery, and an execution subject of the safety management method based on the retired battery comprises, but is not limited to, at least one of a server, a terminal and the like which can be configured to execute the electronic equipment of the method provided by the embodiment of the invention. In other words, the retired battery-based security management method may be performed by software or hardware installed in a terminal device or a server device, where the software may be a blockchain platform. The service end includes but is not limited to: a single server, a server cluster, a cloud server or a cloud server cluster, and the like. The server may be an independent server, or may be a cloud server that provides cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communications, middleware services, domain name services, security services, content delivery networks (Content Delivery Network, CDN), and basic cloud computing services such as big data and artificial intelligence platforms.
Fig. 1 is a schematic flow chart of a safety management method based on retired battery according to an embodiment of the invention. The retired battery-based safety management method depicted in fig. 1 comprises the following steps:
s1, obtaining an retired battery, carrying out surface detection on the retired battery to obtain a surface detection result, and screening out the retired battery reaching the standard based on the surface detection result.
In the embodiment of the invention, the retired battery refers to a battery which cannot meet market demands and is retired, such as a new energy vehicle-mounted battery and an electric vehicle battery.
According to the embodiment of the invention, the retired battery can be subjected to preliminary detection by carrying out surface detection on the retired battery to obtain the surface detection result, and data support is provided for screening out the battery with the outer surface meeting the requirements. The surface detection result is a battery inspection result obtained after quality detection of the surface of the retired battery.
As an embodiment of the invention, the surface detection of the retired battery may be performed by detecting leakage, flatulence, shell breakage, pole corrosion, etc. on the exterior of the retired battery by an exterior scanner.
Further, according to the embodiment of the invention, the out-of-service battery meeting the standard of the out-of-service battery is screened out based on the surface detection result, and the out-of-service battery meeting the appearance requirement can be determined through screening. The decommissioning battery is a battery meeting the requirements after appearance detection of the decommissioning battery.
As an embodiment of the present invention, the screening out the retired battery reaching standards based on the surface detection result includes: identifying an abnormal result in the surface detection result; calculating an abnormal value of the abnormal result; based on the abnormal value, performing risk analysis on the retired battery to obtain a risk analysis result; and screening out the retired battery reaching the standard according to the risk analysis result.
The abnormal result is a result with abnormality in the surface detection result, the abnormal value is an abnormal degree of the abnormal result, and the risk analysis result is a safety risk of the retired battery estimated according to the abnormal value.
Further, in an alternative embodiment of the present invention, the outlier of the outlier result is calculated using the following formula:
Wherein YC represents an outlier, ln (a-1) an outlier function, a.beta.Euler constant, a c Represents the c-th abnormal result, and θ represents the abnormal threshold of the abnormal result.
S2, carrying out internal scanning on the standard-reaching retired battery to obtain internal parameters of the standard-reaching retired battery, establishing a battery analysis model of the standard-reaching retired battery according to the internal parameters, analyzing the battery health state of the standard-reaching retired battery according to the battery analysis model, and identifying the target retired battery in the standard-reaching retired battery according to the battery health state.
According to the embodiment of the invention, the internal parameters of the standard-reaching retired battery are obtained by carrying out internal scanning on the standard-reaching retired battery, and the internal parameter information of the standard-reaching retired battery can be obtained, so that data support is provided for the internal safety analysis of the standard-reaching retired battery in the later period. The internal parameters refer to internal structural parameters of the standard-reaching retired battery, such as structural parameters of a battery core, a module, a system and the like.
As an embodiment of the present invention, the internal scanning of the standard-compliant retired battery may be performed to obtain the internal parameters of the standard-compliant retired battery by using a nano CT (computed tomography) technology.
According to the embodiment of the invention, the battery analysis model of the standard-reaching retired battery is established according to the internal parameters, so that the standard-reaching retired battery can be better subjected to internal analysis through the established model, and the safety of battery management screening is improved.
As one embodiment of the present invention, the establishing a battery analysis model of the decommissioned battery according to the internal parameters includes: analyzing the parameter characteristics of the internal parameters; constructing a parameter relation of the internal parameters according to the parameter characteristics; determining the internal logic of the battery which is out of service after reaching standards according to the parameter relation; and configuring analysis rules of the standard-reaching retired battery according to the internal logic of the battery, and establishing a battery analysis model of the standard-reaching retired battery according to the analysis rules.
The parameter characteristics refer to characteristics of each parameter in the internal parameters, the parameter relation refers to an association relation between parameters, the internal logic of the battery refers to composition and operation logic between internal structures of the standard-reaching retired battery, and the analysis rule refers to a rule for analyzing the inside of the standard-reaching retired battery.
Further, in an alternative embodiment of the present invention, the analyzing the parameter characteristics of the internal parameter may be implemented by a feature function.
Further, according to the embodiment of the invention, the battery health state of the retired battery reaching standards is analyzed according to the battery analysis model, and whether the battery meets the safety requirement or not can be judged through the battery health state, so that the safety of retired battery management is improved.
As one embodiment of the present invention, the analyzing, according to the battery analysis model, the battery health status of the decommissioned battery includes: extracting parameters to be analyzed of the standard-reaching retired battery by utilizing an extraction layer in the battery analysis model; digging the parameter characteristics of the parameter to be analyzed by utilizing the digging layer of the battery analysis model; and calculating the battery health degree of the standard-reaching retired battery by utilizing a decision layer of the battery analysis model according to the parameter characteristics, and analyzing the battery health state of the standard-reaching retired battery according to the battery health degree.
The extraction layer is used for extracting parameters required to be analyzed of the standard-reaching retired battery, the parameters to be analyzed are parameters required to be analyzed of the standard-reaching retired battery, the mining layer is used for mining and analyzing data characteristics of the parameters to be analyzed, and the decision layer is used for calculating the health degree of the standard-reaching retired battery through the parameter characteristics.
Further, in an optional embodiment of the present invention, the determining layer of the battery analysis model is used to calculate the battery health of the standard-reaching retired battery according to the parameter characteristics: calculating the current battery capacity of the standard-reaching retired battery according to the parameter characteristics; according to the current battery capacity, calculating the battery health of the standard-reaching retired battery by using the following formula:
wherein DC SOH The method is characterized in that the method comprises the steps of representing the health degree of a battery, wherein C represents the current battery capacity, deltaD represents the number of times of charging and discharging of the standard-reaching retired battery, and E represents the rated capacity of the standard-reaching retired battery.
According to the embodiment of the invention, the target retired battery in the standard retired battery is identified according to the battery health state, so that the standard retired battery can be subjected to secondary screening, the reserved battery is safer, and the safety of retired battery management is improved. The target retired battery is a qualified battery screened from the standard retired batteries according to the battery health state.
As an embodiment of the invention, the identifying the target retired battery in the standard retired battery according to the battery health status may be judged by identifying the conductivity of the electrolyte of the standard retired battery, the electrification of the positive and negative pole pieces, the lithium hydroxide content and the iron phosphate content, and the target retired battery is when the conductivity of the electrolyte, the electrification of the positive and negative pole pieces, the lithium hydroxide content and the iron phosphate content meet the requirements. And decomposing the unqualified retired battery to obtain battery powder, pole piece powder, recovered lithium and battery-grade ferric phosphate, and recycling the battery powder, the pole piece powder, the recovered lithium and the battery-grade ferric phosphate.
S3, analyzing the structural characteristics of the target retired battery according to the battery health state, calculating the structural similarity of the structural characteristics, and carrying out consistency classification on the target retired battery according to the structural similarity to obtain a classified battery.
According to the embodiment of the invention, the internal characteristics of the target retired battery can be better analyzed by analyzing the structural characteristics of the target retired battery according to the battery health state. Wherein the structural feature refers to a feature of an internal structure of the target retired battery.
As one embodiment of the present invention, the analyzing the structural characteristics of the target retired battery according to the battery health status includes: extracting structural health parameters of the target retired battery according to the battery health state; analyzing parameter attributes of the structural health parameters; and identifying the structural performance of the target retired battery according to the parameter attribute, and analyzing the structural characteristics of the target retired battery according to the structural performance.
The structural health parameter refers to a health parameter capable of reflecting the target retired battery, the parameter attribute refers to a data attribute of the structural health parameter, and the structural performance refers to a component performance of an internal component of the target retired battery, such as a performance of electric core conductivity, internal resistance and the like.
Further, in an alternative embodiment of the present invention, the analyzing the parameter attribute of the structural health parameter is implemented by a Python data analysis function.
Further, according to the embodiment of the invention, the battery with similar internal structure of the target retired battery can be judged according to the structural similarity by calculating the structural similarity of the structural features, so that unified processing is realized, and the safety of retired battery management is improved. The structural similarity refers to the similarity of the internal components of the target retired battery.
As an embodiment of the present invention, the calculating the structural similarity of the structural features includes: calculating the structural similarity of the structural features by using the following formula:
wherein the XSD represents structural similarity, E d Representing the abscissa position of the structural feature, F d Representing the ordinate position of the structural feature, h representing the number of structural features, and d representing the d-th structural feature.
According to the embodiment of the invention, the target retired battery is subjected to consistency classification according to the structural similarity, and the classified battery can be obtained to classify the performance similarity, so that rejection after battery recombination is reduced, and the safety of retired battery management is improved. The classifying battery is a battery obtained by classifying the target retired battery according to the structure similarity.
As an embodiment of the present invention, the consistency classification of the target retired battery may be implemented by a clustering function.
S4, constructing a recombination environment of the classified batteries, recombining the classified batteries based on the recombination environment to obtain retired battery packs, and performing distributed equalization processing on the retired battery packs to obtain equalized battery packs.
According to the embodiment of the invention, the recombination environment of the classified batteries is constructed, so that the safety of the retired battery management is improved under the safe environment of the classified batteries. The recombination environment is an environment constructed for recombining the classified batteries, and comprises the following components: site, temperature, air humidity, etc.
Furthermore, the embodiment of the invention reorganizes the classified batteries based on the reorganization environment to obtain the retired battery pack, so that the classified batteries can be assembled, and the later reutilization is convenient. The retired battery pack is a battery pack obtained by recombining the classified batteries.
As an embodiment of the present invention, the reorganizing the classified battery based on the reorganizing environment may be implemented by connecting a plurality of unit batteries in series and parallel.
According to the embodiment of the invention, the distributed equalization processing is carried out on the retired battery pack to obtain the equalized battery pack, so that the rejection among the single batteries can be further eliminated, the stability of the retired battery pack is improved, and the safety of retired battery management is improved. The balancing battery pack is a battery pack obtained by balancing the retired battery pack.
As one embodiment of the present invention, the performing distributed equalization processing on the retired battery pack to obtain an equalized battery pack includes: identifying a combination form of the retired battery pack; calculating the unbalance degree of the retired battery pack according to the combination form; based on the unbalance, configuring an equalization rule of the retired battery pack; and executing distributed equalization processing on the retired battery pack by using the equalization rule to obtain the equalization battery pack.
The combination mode refers to a combination mode of battery combination, such as a series connection mode, a parallel connection mode and the like, the unbalance degree refers to the operation instability degree of the retired battery pack, and the balancing rule refers to a stability optimization scheme, such as a scheme of current balancing, voltage balancing and the like, of the retired battery pack.
Further, in an alternative embodiment of the present invention, the imbalance of the retired battery pack is calculated according to the combination form using the following formula:
where JH represents the imbalance, s represents the number of cells in the retired battery pack, R p The p-th battery in the retired battery pack is represented, W represents the voltage value of the retired battery pack, and SBU represents the combination form.
Further, in an optional embodiment of the present invention, the performing, by using the balancing rule, a distributed balancing process on the retired battery pack, and obtaining the balanced battery pack may be implemented by using an activation function.
And S5, performing thermal management on the balanced battery pack to obtain a safety management battery.
According to the embodiment of the invention, the balanced battery pack is subjected to thermal management, so that the safety management battery can be obtained, and the damage caused by the temperature influence in the use process of the retired battery after recombination can be reduced through thermal management. The safety management battery is an retired battery which is subjected to safety management.
As an embodiment of the present invention, the thermal management of the balancing battery pack, and the obtaining of the safety management battery may be monitored by installing temperature sensors on the balancing battery pack and the equipment to be powered.
It can be seen that, according to the embodiment of the invention, the retired battery is subjected to surface detection to obtain a surface detection result, so that the retired battery can be subjected to preliminary detection, and data support is provided for screening out batteries with external surface meeting requirements. According to the embodiment of the invention, the battery analysis model of the standard-reaching retired battery is established according to the internal parameters, so that the standard-reaching retired battery can be better subjected to internal analysis through the established model, and the safety of battery management screening is improved. Further, according to the embodiment of the invention, the target retired battery in the standard retired battery is identified according to the battery health state, so that the standard retired battery can be subjected to secondary screening, the reserved battery is safer, and the safety of retired battery management is improved. And thirdly, according to the structural similarity, the target retired battery is subjected to consistency classification, and the classified batteries can be obtained to classify the similar performance, so that rejection after battery recombination is reduced, and the safety of retired battery management is improved. Finally, the embodiment of the invention obtains the balanced battery pack by executing the distributed balancing treatment on the retired battery pack, so that the rejection among the single batteries can be further eliminated, the stability of the retired battery pack is improved, and the safety of the retired battery management is improved. Therefore, the safety management method and the safety management device based on the retired battery can improve the safety of retired battery management.
As shown in fig. 2, the functional block diagram of the retired battery-based safety management device according to the present invention is shown.
The retired battery-based security management device 200 of the present invention may be installed in an electronic device. Depending on the functions implemented, the retired battery based security management device may include a battery surface detection module 201, a battery internal detection module 202, a battery classification module 203, a battery equalization processing module 204, and a battery thermal management module 205. The module of the invention, which may also be referred to as a unit, refers to a series of computer program segments, which are stored in the memory of the electronic device, capable of being executed by the processor of the electronic device and of performing a fixed function.
In the embodiment of the present invention, the functions of each module/unit are as follows:
the battery surface detection module 201 is configured to obtain a retired battery, perform surface detection on the retired battery to obtain a surface detection result, and screen out a standard retired battery of the retired battery based on the surface detection result;
the battery internal detection module 202 is configured to perform internal scanning on the standard-compliant retired battery to obtain internal parameters of the standard-compliant retired battery, establish a battery analysis model of the standard-compliant retired battery according to the internal parameters, analyze a battery health status of the standard-compliant retired battery according to the battery analysis model, and identify a target retired battery in the standard-compliant retired battery according to the battery health status;
The battery classification module 203 is configured to analyze structural features of the target retired battery according to the battery health status, calculate structural similarity of the structural features, and perform consistency classification on the target retired battery according to the structural similarity to obtain a classified battery;
the battery balancing processing module 204 is configured to construct a reorganization environment of the classified battery, reorganize the classified battery based on the reorganization environment to obtain a retired battery pack, and perform distributed balancing processing on the retired battery pack to obtain a balanced battery pack;
the battery thermal management module 205 is configured to perform thermal management on the balanced battery pack to obtain a safety management battery.
In detail, the modules in the retired battery-based security management device 200 in the embodiment of the present invention use the same technical means as the retired battery-based security management method described in fig. 1, and can produce the same technical effects, which are not described herein.
Fig. 3 is a schematic structural diagram of an electronic device implementing a retired battery-based security management method according to the present invention.
The electronic device may comprise a processor 30, a memory 31, a communication bus 32 and a communication interface 33, and may further comprise a computer program stored in the memory 31 and executable on the processor 30, such as a retired battery based security management program.
The processor 30 may be formed by an integrated circuit in some embodiments, for example, a single packaged integrated circuit, or may be formed by a plurality of integrated circuits packaged with the same function or different functions, including one or more central processing units (Central Processing unit, CPU), a microprocessor, a digital processing chip, a graphics processor, a combination of various control chips, and so on. The processor 30 is a Control Unit (Control Unit) of the electronic device, connects various components of the entire electronic device using various interfaces and lines, executes or executes programs or modules stored in the memory 31 (for example, executes a retired battery-based security management program, etc.), and invokes data stored in the memory 31 to perform various functions of the electronic device and process data.
The memory 31 includes at least one type of readable storage medium including flash memory, a removable hard disk, a multimedia card, a card memory (e.g., SD or DX memory, etc.), a magnetic memory, a magnetic disk, an optical disk, etc. The memory 31 may in some embodiments be an internal storage unit of the electronic device, such as a mobile hard disk of the electronic device. The memory 31 may also be an external storage device of the electronic device in other embodiments, for example, a plug-in mobile hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card) or the like, which are provided on the electronic device. Further, the memory 31 may also include both an internal storage unit and an external storage device of the electronic device. The memory 31 may be used not only for storing application software installed in an electronic device and various types of data, such as codes of a database-configured connection program, but also for temporarily storing data that has been output or is to be output.
The communication bus 32 may be a peripheral component interconnect standard (peripheral component interconnect, PCI) bus, or an extended industry standard architecture (extended industry standard architecture, EISA) bus, among others. The bus may be classified as an address bus, a data bus, a control bus, etc. The bus is arranged to enable a connection communication between the memory 31 and at least one processor 30 or the like.
The communication interface 33 is used for communication between the electronic device 3 and other devices, including a network interface and a user interface. Optionally, the network interface may include a wired interface and/or a wireless interface (e.g., WI-FI interface, bluetooth interface, etc.), typically used to establish a communication connection between the electronic device and other electronic devices. The user interface may be a Display (Display), an input unit such as a Keyboard (Keyboard), or alternatively a standard wired interface, a wireless interface. Alternatively, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch, or the like. The display may also be referred to as a display screen or display unit, as appropriate, for displaying information processed in the electronic device and for displaying a visual user interface.
Fig. 3 shows only an electronic device with components, and it will be understood by those skilled in the art that the structure shown in fig. 3 is not limiting of the electronic device and may include fewer or more components than shown, or may combine certain components, or a different arrangement of components.
For example, although not shown, the electronic device may further include a power source (such as a battery) for supplying power to the respective components, and preferably, the power source may be logically connected to the at least one processor 30 through a power management device, so that functions of charge management, discharge management, power consumption management, and the like are implemented through the power management device. The power supply may also include one or more of any of a direct current or alternating current power supply, recharging device, power failure detection circuit, power converter or inverter, power status indicator, etc. The electronic device may further include various sensors, bluetooth modules, wi-Fi modules, etc., which are not described herein.
It should be understood that the embodiments described are for illustrative purposes only and are not limited in scope by this configuration.
The database-configured connection program stored in the memory 31 in the electronic device is a combination of a plurality of computer programs, which, when run in the processor 30, can implement:
Obtaining a retired battery, carrying out surface detection on the retired battery to obtain a surface detection result, and screening out the retired battery reaching the standard based on the surface detection result;
performing internal scanning on the standard-reaching retired battery to obtain internal parameters of the standard-reaching retired battery, establishing a battery analysis model of the standard-reaching retired battery according to the internal parameters, analyzing the battery health state of the standard-reaching retired battery according to the battery analysis model, and identifying a target retired battery in the standard-reaching retired battery according to the battery health state;
analyzing the structural characteristics of the target retired battery according to the battery health state, calculating the structural similarity of the structural characteristics, and carrying out consistency classification on the target retired battery according to the structural similarity to obtain classified batteries;
constructing a recombination environment of the classified batteries, recombining the classified batteries based on the recombination environment to obtain retired battery packs, and performing distributed equalization processing on the retired battery packs to obtain equalized battery packs;
and performing thermal management on the balanced battery pack to obtain a safety management battery.
In particular, the specific implementation method of the processor 30 on the computer program may refer to the description of the relevant steps in the corresponding embodiment of fig. 1, which is not repeated herein.
Further, the electronic device integrated modules/units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a non-volatile computer readable storage medium. The storage medium may be volatile or nonvolatile. For example, the computer readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer Memory, a Read-Only Memory (ROM).
The present invention also provides a storage medium storing a computer program which, when executed by a processor of an electronic device, can implement:
obtaining a retired battery, carrying out surface detection on the retired battery to obtain a surface detection result, and screening out the retired battery reaching the standard based on the surface detection result;
performing internal scanning on the standard-reaching retired battery to obtain internal parameters of the standard-reaching retired battery, establishing a battery analysis model of the standard-reaching retired battery according to the internal parameters, analyzing the battery health state of the standard-reaching retired battery according to the battery analysis model, and identifying a target retired battery in the standard-reaching retired battery according to the battery health state;
Analyzing the structural characteristics of the target retired battery according to the battery health state, calculating the structural similarity of the structural characteristics, and carrying out consistency classification on the target retired battery according to the structural similarity to obtain classified batteries;
constructing a recombination environment of the classified batteries, recombining the classified batteries based on the recombination environment to obtain retired battery packs, and performing distributed equalization processing on the retired battery packs to obtain equalized battery packs;
and performing thermal management on the balanced battery pack to obtain a safety management battery.
The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A retired battery-based security management method, the method comprising:
Obtaining a retired battery, carrying out surface detection on the retired battery to obtain a surface detection result, and screening out the retired battery reaching the standard based on the surface detection result;
performing internal scanning on the standard-reaching retired battery to obtain internal parameters of the standard-reaching retired battery, establishing a battery analysis model of the standard-reaching retired battery according to the internal parameters, analyzing the battery health state of the standard-reaching retired battery according to the battery analysis model, and identifying a target retired battery in the standard-reaching retired battery according to the battery health state;
analyzing the structural characteristics of the target retired battery according to the battery health state, calculating the structural similarity of the structural characteristics, and carrying out consistency classification on the target retired battery according to the structural similarity to obtain classified batteries;
constructing a recombination environment of the classified batteries, recombining the classified batteries based on the recombination environment to obtain retired battery packs, and performing distributed equalization processing on the retired battery packs to obtain equalized battery packs;
and performing thermal management on the balanced battery pack to obtain a safety management battery.
2. The method of claim 1, wherein screening out standard retired batteries of the retired batteries based on the surface detection results comprises:
identifying an abnormal result in the surface detection result;
calculating an outlier of the outlier result using the formula:
wherein YC represents an outlier, ln (a-1) an outlier function, a.beta.Euler constant, a c Representing the c-th abnormal result, θ representing an abnormal threshold of the abnormal result;
based on the abnormal value, performing risk analysis on the retired battery to obtain a risk analysis result;
and screening out the retired battery reaching the standard according to the risk analysis result.
3. The method of claim 1, wherein said establishing a battery analysis model of said standard retired battery based on said internal parameters comprises:
analyzing the parameter characteristics of the internal parameters;
constructing a parameter relation of the internal parameters according to the parameter characteristics;
determining the internal logic of the battery which is out of service after reaching standards according to the parameter relation;
according to the internal logic of the battery, configuring an analysis rule of the standard-reaching retired battery;
and establishing a battery analysis model of the standard-reaching retired battery according to the analysis rule.
4. The method of claim 1, wherein analyzing the battery state of health of the standard retired battery according to the battery analysis model comprises:
extracting parameters to be analyzed of the standard-reaching retired battery by utilizing an extraction layer in the battery analysis model;
digging the parameter characteristics of the parameter to be analyzed by utilizing the digging layer of the battery analysis model;
according to the parameter characteristics, calculating the battery health of the standard-reaching retired battery by utilizing a decision layer of the battery analysis model;
and analyzing the battery health state of the standard-reaching retired battery according to the battery health degree.
5. The method of claim 4, wherein said calculating the battery health of the up-to-standard retired battery using a decision layer of the battery analysis model based on the parametric features comprises:
calculating the current battery capacity of the standard-reaching retired battery according to the parameter characteristics;
according to the current battery capacity, calculating the battery health of the standard-reaching retired battery by using the following formula:
wherein DC SOH The method is characterized in that the method comprises the steps of representing the health degree of a battery, wherein C represents the current battery capacity, deltaD represents the number of times of charging and discharging of the standard-reaching retired battery, and E represents the rated capacity of the standard-reaching retired battery.
6. The method of claim 1, wherein analyzing the structural characteristics of the target retired battery based on the battery state of health comprises:
extracting structural health parameters of the target retired battery according to the battery health state;
analyzing parameter attributes of the structural health parameters;
identifying the structural performance of the target retired battery according to the parameter attribute;
and analyzing the structural characteristics of the target retired battery according to the structural performance.
7. The method of claim 1, wherein said calculating the structural similarity of the structural features comprises:
calculating the structural similarity of the structural features by using the following formula:
wherein the XSD represents structural similarity, E d Representing the abscissa position of the structural feature, F d Representing the ordinate position of the structural feature, h representing the number of structural features, and d representing the d-th structural feature.
8. The method of claim 1, wherein performing distributed equalization on the retired battery pack results in an equalized battery pack, comprising:
identifying a combination form of the retired battery pack;
calculating the unbalance degree of the retired battery pack according to the combination form;
Based on the unbalance, configuring an equalization rule of the retired battery pack;
and executing distributed equalization processing on the retired battery pack by using the equalization rule to obtain the equalization battery pack.
9. The method of claim 8, wherein said calculating an imbalance of said retired battery pack based on said combining form:
according to the combination form, calculating the unbalance degree of the retired battery pack by using the following formula:
where JH represents the imbalance, s represents the number of cells in the retired battery pack, R p The p-th battery in the retired battery pack is represented, W represents the voltage value of the retired battery pack, and SBU represents the combination form.
10. A retired battery-based security management device, the device comprising:
the battery surface detection module is used for acquiring the retired battery, carrying out surface detection on the retired battery to obtain a surface detection result, and screening out the standard retired battery of the retired battery based on the surface detection result;
the battery internal detection module is used for carrying out internal scanning on the standard-reaching retired battery to obtain internal parameters of the standard-reaching retired battery, establishing a battery analysis model of the standard-reaching retired battery according to the internal parameters, analyzing the battery health state of the standard-reaching retired battery according to the battery analysis model, and identifying a target retired battery in the standard-reaching retired battery according to the battery health state;
The battery classification module is used for analyzing the structural characteristics of the target retired battery according to the battery health state, calculating the structural similarity of the structural characteristics, and carrying out consistency classification on the target retired battery according to the structural similarity to obtain classified batteries;
the battery equalization processing module is used for constructing a recombination environment of the classified batteries, recombining the classified batteries based on the recombination environment to obtain retired battery packs, and performing distributed equalization processing on the retired battery packs to obtain equalized battery packs;
and the battery thermal management module is used for carrying out thermal management on the balanced battery pack to obtain a safety management battery.
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