CN116027213A - Retired battery grouping method and device, electronic equipment and readable storage medium - Google Patents
Retired battery grouping method and device, electronic equipment and readable storage medium Download PDFInfo
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Abstract
The disclosure provides a retired battery grouping method, a retired battery grouping device, electronic equipment and a readable storage medium, wherein the retired battery grouping method comprises the following steps: acquiring performance parameters of each target retired battery in a plurality of target retired batteries, wherein the performance parameters comprise at least one of capacity, internal resistance and discharge cut-off voltage of the target retired battery; clustering performance parameters of each target retired battery in the plurality of target retired batteries to obtain at least one clustering result; and grouping the plurality of target retired batteries based on at least one clustering result to obtain at least one battery pack. The retired batteries are applied to the base station power backup application, so that the residual electric quantity of the retired batteries is fully used, the operation cost of the base station is reduced, and on the basis, a plurality of target retired batteries are grouped in a performance parameter clustering mode, so that the performance gap of different target retired batteries in the same battery pack is reduced, and the retired batteries are more reliable when used as base station power backup equipment.
Description
Technical Field
The disclosure relates to the technical field of internet of things, in particular to a retired battery grouping method, a retired battery grouping device, electronic equipment and a readable storage medium.
Background
At present, the average service life of a power battery used in an electric automobile is 5-8 years, the performance of the power battery is attenuated along with the increase of charging times, and when the capacity of the power battery is attenuated to be less than 80% of rated capacity, the power battery is called as a retired battery, and the retired battery is not suitable for the electric automobile.
Disclosure of Invention
An object of an embodiment of the present disclosure is to provide a method, an apparatus, an electronic device, and a readable storage medium for grouping retired batteries, which are used for solving a technical problem that a residual capacity of retired batteries cannot be fully utilized according to a related technology.
In a first aspect, an embodiment of the present disclosure provides a retired battery grouping method, including:
acquiring performance parameters of each target retired battery in a plurality of target retired batteries, wherein the performance parameters comprise at least one of capacity, internal resistance and discharge cut-off voltage of the target retired battery;
clustering the performance parameters of each target retired battery in the plurality of target retired batteries to obtain at least one clustering result;
and grouping the plurality of target retired batteries based on the at least one clustering result to obtain at least one battery pack, wherein the at least one battery pack corresponds to the at least one clustering result one by one.
In one embodiment, before the obtaining the performance parameter of each of the plurality of target retired batteries, the method further comprises:
charging each original retired battery in a plurality of original retired batteries to obtain a first charge capacity of each original retired battery in the plurality of original retired batteries;
identifying a bad retired battery in the plurality of original retired batteries according to the first initial charge capacity of each original retired battery in the plurality of original retired batteries, wherein the bad retired battery is an original retired battery with the first initial charge capacity smaller than a battery capacity lower limit threshold, and the plurality of target retired batteries comprise other original retired batteries except the bad retired battery in the plurality of original retired batteries.
In one embodiment, the charging each of the plurality of original retired batteries to obtain a first charge capacity of each of the plurality of original retired batteries includes:
charging each of the plurality of original retired batteries, and determining the capacity of each of the plurality of original retired batteries when the original retired batteries are charged to a preset cut-off voltage as a first charge capacity.
In one embodiment, after the charging the each of the plurality of original retired batteries to obtain the first charge capacity of the each of the plurality of original retired batteries, before the obtaining the performance parameter of the each of the plurality of target retired batteries, the method further includes:
and carrying out charge state adjustment on all the electric cores included in the target retired battery so that the charge state difference of any two electric cores in all the electric cores included in the target retired battery is smaller than a charge state difference threshold value.
In one embodiment, the method further comprises, after identifying a bad retired battery among the plurality of original retired batteries according to the first initial charge capacity of each original retired battery among the plurality of original retired batteries:
charging each of a plurality of battery cells included in the bad retired battery to obtain a second first charge capacity of each of the plurality of battery cells;
and identifying a bad battery cell in the plurality of battery cells according to the second first charge capacity of each battery cell in the plurality of battery cells, wherein the bad battery cell is a battery cell with the second first charge capacity smaller than a battery cell capacity lower limit threshold value in the plurality of battery cells, and the plurality of target retired battery cells further comprise other battery cells except the bad battery cell in the plurality of battery cells.
In one embodiment, after grouping the plurality of target retired batteries based on the at least one clustering result to obtain at least one battery pack, the method further includes:
each of the at least one battery pack is charged such that a remaining charge of each of the at least one battery pack is greater than a charge threshold.
In one embodiment, any two target retired batteries in the target clustering results meet a clustering condition, wherein the target clustering result is any one of the at least one clustering result, and the clustering condition comprises:
the difference between the capacities of any two target retired batteries is smaller than a first threshold value;
the difference of the internal resistances of any two target retired batteries is smaller than a second threshold value;
and the difference between the discharge cut-off voltages of any two target retired batteries is smaller than a third threshold value.
In a second aspect, embodiments of the present disclosure further provide a retired battery grouping apparatus, the apparatus comprising:
the system comprises a parameter acquisition module, a power supply module and a power supply module, wherein the parameter acquisition module is used for acquiring performance parameters of each target retired battery in a plurality of target retired batteries, wherein the performance parameters comprise at least one of capacity, internal resistance and discharge cut-off voltage of the target retired battery;
the clustering module is used for clustering the performance parameters of each target retired battery in the plurality of target retired batteries to obtain at least one clustering result;
and the grouping module is used for grouping the plurality of target retired batteries based on the at least one clustering result to obtain at least one battery pack, wherein the at least one battery pack corresponds to the at least one clustering result one by one.
In a third aspect, an embodiment of the present disclosure further provides an electronic device, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program when executed by the processor implements the steps of the retired battery grouping method described above.
In a fourth aspect, the disclosed embodiments also provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the retired battery grouping method described above.
In the embodiment of the disclosure, the retired battery is applied to the base station power-backup application to fully use the residual electric quantity of the retired battery, so that the operation cost of the base station is reduced, on the basis, the performance parameters of each retired battery in a plurality of target retired batteries are obtained, the plurality of performance parameters are clustered to obtain at least one clustering result, and the plurality of target retired batteries are grouped based on the at least one clustering result, so that the performance gap of different target retired batteries in the same battery pack is reduced, and the retired battery is more reliable when being used as base station power-backup equipment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings that are needed in the description of the embodiments of the present disclosure will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a flow chart of a retired battery grouping method provided by an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a retired battery grouping device according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the disclosure.
Detailed Description
The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are some embodiments of the present disclosure, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure.
An embodiment of the present disclosure provides a method for grouping retired batteries, referring to fig. 1, fig. 1 is a flowchart of the method for grouping retired batteries provided in the embodiment of the present disclosure, as shown in fig. 1, including the following steps:
and 101, acquiring performance parameters of each target retired battery in the plurality of target retired batteries.
Wherein the performance parameter includes at least one of a capacity, an internal resistance, and a discharge cutoff voltage of the target retired battery.
The target retired battery may be a retired battery passing through appearance detection, and a retired battery not passing through appearance detection includes, but is not limited to, a damaged retired battery, a leaked retired battery, a retired battery with deformation, and a eroded retired battery.
Illustratively, the process of obtaining the capacity of the target retired battery may be:
firstly, standing the target retired battery for 1 minute, and then controlling constant current discharge of the target retired battery under the constant current of 100A, wherein the lower limit voltage of a single battery cell in the target retired battery is 2.9V during discharge, the upper limit voltage of the single battery cell in the target retired battery during discharge is 3.53V, and the protection voltage of the target retired battery during discharge is 2.5nV, wherein n is the number of battery cells connected in series in the target retired battery.
After discharging, standing the target retired battery for 2 minutes, and carrying out constant-current charging on the target retired battery under the constant current of 100A, wherein the lower limit voltage of a single battery cell in the target retired battery is 2.9V during charging, the upper limit voltage of the single battery cell in the target retired battery during charging is 3.53V, the protection voltage of the target retired battery during charging is 3.8nV, and the battery capacity obtained by measurement after charging is the capacity of the target retired battery.
For example, the process of obtaining the internal resistance of the target retired battery may be:
firstly, standing a target retired battery for 1 minute, then controlling constant current discharge of the target retired battery under a constant current of 100A, collecting a first voltage of the target retired battery at a discharge starting moment and a second voltage of the target retired battery at a discharge ending moment, and calculating to obtain the internal resistance (DCIR) of the target retired battery based on the difference between the first voltage and the second voltage, wherein DCIR= (E1-E2)/(100), E1 is the first voltage, and E2 is the second voltage.
Illustratively, the process of obtaining the discharge cutoff voltage of the target retired battery may be:
firstly standing the target retired battery for 1 minute, then controlling constant current discharge of the target retired battery under the constant current of 100A, ending the discharge when the discharge voltage of the target retired battery is lower than a preset voltage, and determining the voltage acquired at the moment of ending the discharge as the discharge cut-off voltage of the target retired battery.
For example, a K-Means clustering algorithm may be applied to cluster the performance parameter of each of the plurality of target retired batteries to obtain at least one clustered result.
It should be noted that other clustering algorithms may be applied to complete the clustering process, and the specific clustering algorithm applied in the clustering process is not limited in this disclosure.
For example, if the plurality of target retired batteries include a target retired battery 1, a target retired battery 2, a target retired battery 3, and a target retired battery 4, wherein the performance parameters of the target retired battery 1 and the performance parameters of the target retired battery 2 are located in the same clustering result, the performance parameters of the target retired battery 3 and the performance parameters of the target retired battery 4 are located in the same clustering result, 2 battery packs may be obtained based on the 2 clustering results in this example, where one battery pack includes the target retired battery 1 and the target retired battery 2, and the other battery pack includes the target retired battery 3 and the target retired battery 4.
After at least one battery pack is obtained, a plurality of target retired batteries belonging to the same battery pack can be assembled into a battery cluster by means of manual assembly or automatic equipment assembly so as to be used by a base station.
As described above, in the embodiment of the present disclosure, by applying the retired battery to the base station power-backup application, so as to fully use the remaining power of the retired battery, and reduce the operating cost of the base station, on this basis, by obtaining the performance parameter of each retired battery in the plurality of target retired batteries and clustering the plurality of performance parameters, at least one clustering result is obtained, and the plurality of target retired batteries are grouped based on the at least one clustering result, so as to reduce the performance gap of different target retired batteries in the same battery pack, and make the retired battery more reliable when being used as a base station power-backup device.
In one embodiment, before the obtaining the performance parameter of each of the plurality of target retired batteries, the method further comprises:
charging each original retired battery in a plurality of original retired batteries to obtain a first charge capacity of each original retired battery in the plurality of original retired batteries;
identifying a bad retired battery in the plurality of original retired batteries according to the first initial charge capacity of each original retired battery in the plurality of original retired batteries, wherein the bad retired battery is an original retired battery with the first initial charge capacity smaller than a battery capacity lower limit threshold, and the plurality of target retired batteries comprise other original retired batteries except the bad retired battery in the plurality of original retired batteries.
In this embodiment, the battery capacity lower limit threshold may be 150Ah.
Illustratively, the process of obtaining the first charge capacity of the original retired battery may be:
the original retired battery is firstly kept stand for 1 minute, then constant current discharge of the original retired battery is controlled under the constant current of 100A, the lower limit voltage of a single battery cell in the original retired battery is 2.9V during discharge, and the upper limit voltage of the single battery cell in the original retired battery is 3.58V during discharge.
The above-mentioned original retired battery can be understood as a retired power battery which is detected by appearance but not by performance, after recovering several original retired batteries, each original retired battery is charged once to detect the current remaining battery capacity (i.e. the first charge capacity) of each original retired battery, so as to complete the capacity primary inspection of several original retired batteries, where the capacity primary inspection is qualified and the first charge capacity of the original retired battery is greater than or equal to the lower limit threshold of battery capacity, and the capacity primary inspection is failed and the first charge capacity of the original retired battery is less than the lower limit threshold of battery capacity.
Compared with the scheme of carrying out fine performance detection on each original retired battery, the scheme of carrying out capacity primary detection on each original retired battery by applying one-time charging operation and finding out the original retired battery with unqualified capacity primary detection can reduce the number of subsequent batteries to be subjected to fine performance detection, so that the efficiency of battery grouping can be effectively improved.
In one embodiment, the charging each of the plurality of original retired batteries to obtain a first charge capacity of each of the plurality of original retired batteries includes:
charging each of the plurality of original retired batteries, and determining the capacity of each of the plurality of original retired batteries when the original retired batteries are charged to a preset cut-off voltage as a first charge capacity.
In this embodiment, when each original retired battery is charged, whether the original retired battery is full is determined by monitoring whether the voltage of each original retired battery reaches a preset cut-off voltage, so as to reduce the occurrence probability of the condition of over-charging or under-charging of the battery, make the first charge capacity of each original retired battery in the detected plurality of original retired batteries more reliable, and make the subsequent battery grouping result more reliable.
For example, the preset cutoff voltage may be 3.58V, and the preset cutoff voltage may be reduced to 5.53V in consideration of voltage fluctuation.
In one embodiment, the method further comprises, after identifying a bad retired battery among the plurality of original retired batteries according to the first initial charge capacity of each original retired battery among the plurality of original retired batteries:
charging each of a plurality of battery cells included in the bad retired battery to obtain a second first charge capacity of each of the plurality of battery cells;
and identifying a bad battery cell in the plurality of battery cells according to the second first charge capacity of each battery cell in the plurality of battery cells, wherein the bad battery cell is a battery cell with the second first charge capacity smaller than a battery cell capacity lower limit threshold value in the plurality of battery cells, and the plurality of target retired battery cells further comprise other battery cells except the bad battery cell in the plurality of battery cells.
As described above, after the defective retired battery is identified in the plurality of original retired batteries, in order to utilize the residual capacity resources of the retired battery to the maximum extent, the plurality of electric cores included in the defective retired battery may be obtained by disassembling the defective retired battery, and then each electric core in the plurality of electric cores obtained by disassembling the defective retired battery is charged to obtain the second first charge capacity of each electric core in the plurality of electric cores, at this time, by removing the electric core whose second first charge capacity is smaller than the lower limit threshold of the electric core capacity, the electric core whose second first charge capacity is greater than or equal to the lower limit threshold of the electric core capacity in the defective retired battery is identified, and a new battery is formed by a secondary assembly method, which can raise the number of target retired batteries that can be used as electric storage base station equipment in the original retired battery without increasing the purchase cost of the original retired battery, so that the operation cost of the base station can be further reduced.
In one embodiment, after the charging the each of the plurality of original retired batteries to obtain the first charge capacity of the each of the plurality of original retired batteries, before the obtaining the performance parameter of the each of the plurality of target retired batteries, the method further includes:
and carrying out charge state adjustment on all the electric cores included in the target retired battery so that the charge state difference of any two electric cores in all the electric cores included in the target retired battery is smaller than a charge state difference threshold value.
In this embodiment, the plurality of target retired batteries may be: the battery pack comprises an original retired battery with a first initial charge capacity larger than a battery capacity lower limit threshold and a new battery assembled by available battery cells, wherein the available battery cells are battery cells with a second initial charge capacity larger than or equal to the battery cell capacity lower limit threshold in the bad retired battery.
After the plurality of target retired batteries are obtained from the plurality of original retired batteries, the charge state differences among all the electric cores included in each target retired battery are balanced by carrying out capacity adjustment on all the electric cores included in each target retired battery, so that the charge states of all the electric cores in the target retired batteries tend to be consistent, the detection accuracy of the subsequent performance parameters of the target retired batteries can be improved, and the subsequent battery grouping result is more reliable.
For example, a 100A constant current charging manner may be applied to charge a portion of the cells in the target retired battery that have not reached the preset cutoff voltage, so as to complete the state of charge adjustment operation for all the cells included in the target retired battery.
In one embodiment, after grouping the plurality of target retired batteries based on the at least one clustering result to obtain at least one battery pack, the method further includes:
each of the at least one battery pack is charged such that a remaining charge of each of the at least one battery pack is greater than a charge threshold.
In this embodiment, after at least one battery pack is obtained, each battery pack in the at least one battery pack is charged, so that the remaining capacity of each battery pack in the at least one battery pack is greater than the electric quantity threshold, which can meet the slow power-down requirement of the battery pack in the long-distance transportation process, avoid the occurrence of the over-discharge problem of the battery pack, and thus prolong the service life of the battery pack.
For example, the charge threshold may be 30% or 40% of the available battery capacity of the corresponding battery pack.
In one embodiment, any two target retired batteries in the target clustering results meet a clustering condition, wherein the target clustering result is any one of the at least one clustering result, and the clustering condition comprises:
the difference between the capacities of any two target retired batteries is smaller than a first threshold value;
the difference of the internal resistances of any two target retired batteries is smaller than a second threshold value;
and the difference between the discharge cut-off voltages of any two target retired batteries is smaller than a third threshold value.
In the embodiment, the capacity, the internal resistance, the discharge cut-off voltage and other parameters of the target retired battery can be detected, and the clustering process is completed by combining the three parameters, so that the clustering result is more accurate and reliable.
For example, the first threshold may be 5Ah, the second threshold may be 0.1mQ, and the third threshold may be 80mV.
Referring to fig. 2, fig. 2 is a retired battery grouping device 200 according to an embodiment of the disclosure, as shown in fig. 2, the device 200 includes:
a parameter obtaining module 201, configured to obtain a performance parameter of each of a plurality of target retired batteries, where the performance parameter includes at least one of a capacity, an internal resistance, and a discharge cutoff voltage of the target retired battery;
a clustering module 202, configured to cluster performance parameters of each of the plurality of target retired batteries to obtain at least one clustering result;
and the grouping module 203 is configured to group the plurality of target retired batteries based on the at least one clustering result to obtain at least one battery pack, where the at least one battery pack corresponds to the at least one clustering result one to one.
In one embodiment, the apparatus 200 further comprises:
the battery first charging module is used for charging each original retired battery in the plurality of original retired batteries to obtain a first charging capacity of each original retired battery in the plurality of original retired batteries;
the battery identification module is used for identifying a bad retired battery in the plurality of original retired batteries according to the first initial charge capacity of each original retired battery in the plurality of original retired batteries, wherein the bad retired battery is an original retired battery with the first initial charge capacity smaller than a battery capacity lower limit threshold, and the plurality of target retired batteries comprise other original retired batteries except the bad retired battery in the plurality of original retired batteries.
In one embodiment, the battery head-charging module is specifically configured to:
charging each of the plurality of original retired batteries, and determining the capacity of each of the plurality of original retired batteries when the original retired batteries are charged to a preset cut-off voltage as a first charge capacity.
In one embodiment, the apparatus 200 further comprises:
and the capacity adjusting module is used for adjusting the capacity of all the electric cores included in the target retired battery so that the capacity difference of any two electric cores in all the electric cores included in the target retired battery is smaller than a capacity difference threshold value.
In one embodiment, the apparatus 200 further comprises:
the battery cell first charging module is used for charging each battery cell in the plurality of battery cells included in the bad retired battery to obtain a second first charging capacity of each battery cell in the plurality of battery cells;
and the battery cell identification module is used for identifying a bad battery cell in the plurality of battery cells according to the second first charge capacity of each battery cell in the plurality of battery cells, wherein the bad battery cell is a battery cell of which the second first charge capacity is smaller than a battery cell capacity lower limit threshold value in the plurality of battery cells, and the plurality of target retired battery also comprises other battery cells except the bad battery cell in the plurality of battery cells.
In one embodiment, the apparatus 200 further comprises:
and the charging module is used for charging each battery pack in the at least one battery pack so that the residual electric quantity of each battery pack in the at least one battery pack is larger than an electric quantity threshold value.
In one embodiment, any two target retired batteries in the target clustering results meet a clustering condition, wherein the target clustering result is any one of the at least one clustering result, and the clustering condition comprises:
the difference between the capacities of any two target retired batteries is smaller than a first threshold value;
the difference of the internal resistances of any two target retired batteries is smaller than a second threshold value;
and the difference between the discharge cut-off voltages of any two target retired batteries is smaller than a third threshold value.
The retired battery grouping device 200 provided in the embodiments of the present disclosure can implement each process in the above-mentioned method embodiments, and in order to avoid repetition, a detailed description is omitted here.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the disclosure, and as shown in fig. 3, the electronic device includes: may include a processor 301, a memory 302, and a program 3021 stored on the memory 302 and executable on the processor 301.
The program 3021, when executed by the processor 301, may implement any steps and achieve the same advantageous effects in the method embodiment corresponding to fig. 1, which will not be described herein.
Those of ordinary skill in the art will appreciate that all or a portion of the steps of implementing the methods of the embodiments described above may be implemented by hardware associated with program instructions, where the program may be stored on a readable medium.
The embodiment of the present disclosure further provides a readable storage medium, where a computer program is stored, where the computer program when executed by a processor may implement any step in the method embodiment corresponding to fig. 1, and may achieve the same technical effect, so that repetition is avoided, and no further description is provided herein.
The computer-readable storage media of the embodiments of the present disclosure may employ any combination of one or more computer-readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium may be, for example, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, either in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a storage medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations of the present disclosure may be written in one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or terminal. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
While the foregoing is directed to the preferred implementation of the disclosed embodiments, it should be noted that numerous modifications and adaptations to those skilled in the art may be made without departing from the principles of the disclosure, and such modifications and adaptations are intended to be within the scope of the disclosure.
Claims (10)
1. A method of retired battery grouping, the method comprising:
acquiring performance parameters of each target retired battery in a plurality of target retired batteries, wherein the performance parameters comprise at least one of capacity, internal resistance and discharge cut-off voltage of the target retired battery;
clustering the performance parameters of each target retired battery in the plurality of target retired batteries to obtain at least one clustering result;
and grouping the plurality of target retired batteries based on the at least one clustering result to obtain at least one battery pack, wherein the at least one battery pack corresponds to the at least one clustering result one by one.
2. The method of claim 1, wherein prior to obtaining the performance parameter for each of the plurality of target retired batteries, the method further comprises:
charging each original retired battery in a plurality of original retired batteries to obtain a first charge capacity of each original retired battery in the plurality of original retired batteries;
identifying a bad retired battery in the plurality of original retired batteries according to the first initial charge capacity of each original retired battery in the plurality of original retired batteries, wherein the bad retired battery is an original retired battery with the first initial charge capacity smaller than a battery capacity lower limit threshold, and the plurality of target retired batteries comprise other original retired batteries except the bad retired battery in the plurality of original retired batteries.
3. The method of claim 2, wherein charging each of the plurality of original retirement batteries to obtain a first charge capacity of each of the plurality of original retirement batteries comprises:
charging each of the plurality of original retired batteries, and determining the capacity of each of the plurality of original retired batteries when the original retired batteries are charged to a preset cut-off voltage as a first charge capacity.
4. The method of claim 3, wherein after charging each of the plurality of original retired batteries to obtain the first charge capacity of each of the plurality of original retired batteries, the method further comprises, prior to obtaining the performance parameter of each of the plurality of target retired batteries:
and carrying out charge state adjustment on all the electric cores included in the target retired battery so that the charge state difference of any two electric cores in all the electric cores included in the target retired battery is smaller than a charge state difference threshold value.
5. The method of claim 2, wherein the method further comprises, after identifying a bad retirement battery among the plurality of original retirement batteries based on a first initial charge capacity of each of the plurality of original retirement batteries:
charging each of a plurality of battery cells included in the bad retired battery to obtain a second first charge capacity of each of the plurality of battery cells;
and identifying a bad battery cell in the plurality of battery cells according to the second first charge capacity of each battery cell in the plurality of battery cells, wherein the bad battery cell is a battery cell with the second first charge capacity smaller than a battery cell capacity lower limit threshold value in the plurality of battery cells, and the plurality of target retired battery cells further comprise other battery cells except the bad battery cell in the plurality of battery cells.
6. The method of claim 1, wherein after grouping the plurality of target retired batteries based on the at least one clustering result to obtain at least one battery pack, the method further comprises:
each of the at least one battery pack is charged such that a remaining charge of each of the at least one battery pack is greater than a charge threshold.
7. The method of claim 1, wherein any two of the target retired batteries in the target cluster result satisfy a cluster condition, wherein the target cluster result is any one of the at least one cluster result, the cluster condition comprising:
the difference between the capacities of any two target retired batteries is smaller than a first threshold value;
the difference of the internal resistances of any two target retired batteries is smaller than a second threshold value;
and the difference between the discharge cut-off voltages of any two target retired batteries is smaller than a third threshold value.
8. A retired battery grouping apparatus, the apparatus comprising:
the system comprises a parameter acquisition module, a power supply module and a power supply module, wherein the parameter acquisition module is used for acquiring performance parameters of each target retired battery in a plurality of target retired batteries, wherein the performance parameters comprise at least one of capacity, internal resistance and discharge cut-off voltage of the target retired battery;
the clustering module is used for clustering the performance parameters of each target retired battery in the plurality of target retired batteries to obtain at least one clustering result;
and the grouping module is used for grouping the plurality of target retired batteries based on the at least one clustering result to obtain at least one battery pack, wherein the at least one battery pack corresponds to the at least one clustering result one by one.
9. An electronic device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program implementing the steps of the retired battery grouping method of any one of claims 1-7 when executed by the processor.
10. A readable storage medium, characterized in that it has stored thereon a computer program which, when executed by a processor, implements the steps of the retired battery grouping method according to any of claims 1-7.
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