Battery performance difference sorting device and method based on battery pack disassembling module

Abstract

The invention relates to the technical field of battery sorting, in particular to a battery performance difference sorting device and method based on a battery pack disassembling module, specifically comprising a sorting frame, the upper surface of the sorting frame is fixedly connected with a support frame, the front surface of the support frame is fixedly connected with a control panel, and the sorting frame is internally provided with a transmission assembly; according to the method, the electrical performance evaluation result of the target battery is preliminarily analyzed from the electrical performance angle of the target battery, the quality and safety performance of the target battery are evaluated and processed by analyzing from the internal material angle of the target battery, and the health performance condition of the target battery is analyzed from the continuous utilization angle; and the analysis result is integrated, discriminated and processed in an information feedback mode, and a machine is intelligently controlled to carry out sorting operation according to the information feedback condition, so that intelligent sorting and conveying of the target battery are realized, and the sorting precision of the target battery is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery sorting, and particularly to a sorting device and method for battery performance differences based on disassembling modules of battery packs. Background Art

[0002] With the gradual increase in the number of electric vehicles, there are more and more retired batteries. How to process and utilize retired power batteries has become an urgent problem to be solved. If all are disposed of as waste, without maximizing the residual value, it will greatly increase the use cost of electric vehicles;

[0003] In daily processing, power batteries are usually reused, and the remaining capacity performance of retired batteries is used in other application fields. However, before battery sorting, it is necessary to analyze the performance differences of each battery one by one, and the traditional battery performance difference analysis data is single, resulting in a large error in battery sorting. In view of the above technical defects, a solution is proposed. Summary of the Invention

[0004] The purpose of the present invention is to provide a sorting device and method for battery performance differences based on disassembling modules of battery packs, initially analyze from the electrical performance angle of target batteries to understand the electrical performance evaluation results of target batteries, and at the same time analyze from the internal material angle of target batteries to evaluate and process the quality and safety performance of target batteries, further provide data support for subsequent analysis, and analyze from the perspective of continuous utilization to understand the health performance of target batteries. And the analysis results are integrated and judged through information feedback, and the mechanical sorting operation is intelligently controlled according to the information feedback situation to realize the intelligent sorting and conveying of target batteries, thereby helping to improve the sorting accuracy of target batteries.

[0005] The purpose of the present invention can be achieved by the following technical solutions: A sorting device for battery performance differences based on disassembling modules of battery packs, including a sorting frame, the upper surface of the sorting frame is fixedly connected with a support frame, the front surface of the support frame is fixedly connected with a control panel, and a transmission component is arranged inside the sorting frame;

[0006] One side of the support frame is fixedly connected with a positioning plate, one side of the positioning plate and below the support frame is fixedly connected with a limiting plate, the upper surface of the limiting plate is fixedly connected with a servo motor, the lower end of the servo motor is internally connected with an adjusting shaft in a transmission manner, the end of the adjusting shaft away from the servo motor is fixedly connected with a sorting plate, and the lower end of the positioning plate is fixedly connected with a partition plate above the transmission component;

[0007] And the upper part of the transmission component is divided into a qualified area and an unqualified area by the partition plate.

[0008] Preferably, an analysis and management platform, a basic sorting unit, a quality defect analysis unit, a continuous utilization analysis unit, a sorting discrimination unit, and a screening execution unit are provided inside the control panel;

[0009] The analysis and management platform is used to retrieve the basic parameter information of the target battery and send the basic parameter information to the basic sorting unit;

[0010] The basic sorting unit is used to perform basic performance acquisition and analysis on the collected basic parameter information, discriminate and process the obtained parameter over-line deviation value to obtain a first-level state or a second-level state. The quality defect analysis unit is used to collect the defect information of the internal materials of the target battery and perform quality defect feedback analysis on the defect information to obtain a quality risk signal or a quality normal signal. The continuous utilization analysis unit is used to retrieve the usage information of the target battery and perform continuous utilization evaluation and analysis on the usage information to obtain a continuous availability signal or a continuous unavailability signal;

[0011] The sorting discrimination unit is used to collect the battery performance information of the target battery and perform performance classification and feedback analysis on the battery performance information to obtain a reverse signal or a forward signal.

[0012] Preferably, the basic performance acquisition and analysis process is as follows: Obtain the basic parameter information of the target battery, where the basic parameter information includes the open-circuit voltage and the AC internal resistance. At the same time, obtain the standard basic parameter information of the target battery, obtain the difference between the values of the corresponding parameters between the basic parameter information of the target battery and the standard basic parameter information, set the number of differences between the values of the corresponding parameters between the basic parameter information and the standard basic parameter information that are greater than the preset threshold as the parameter over-line deviation value, and perform discrimination and processing on the parameter over-line deviation value to obtain a first-level state or a second-level state.

[0013] Preferably, the quality defect feedback analysis process is as follows: Detect the total amount of pole piece deformation and the electrolyte distribution difference value of the target battery through X-ray or infrared imaging technology. The electrolyte distribution difference value represents the difference between the electrolyte distribution characteristic image of the target battery and the standard electrolyte distribution characteristic image;

[0014] Obtain the weight factor coefficient corresponding to the total amount of pole piece deformation of the target battery and the weight factor coefficient corresponding to the electrolyte distribution difference value, multiply the total amount of pole piece deformation of the target battery by the weight factor coefficient corresponding to the total amount of pole piece deformation, and then add the value obtained by multiplying the electrolyte distribution difference value by the weight factor coefficient corresponding to the electrolyte distribution difference value to set it as the safety defect evaluation coefficient.

[0015] Preferably, defect information of the internal materials of the target battery is obtained. The defect information includes a pore feature image and a particle morphology feature image. The difference value between each feature image and the corresponding standard feature image is obtained, and the number of difference values between the feature image and the corresponding standard feature image that are greater than a preset threshold is set as the material feature defect coefficient;

[0016] The safety defect assessment coefficient and the material feature defect coefficient are compared and analyzed with the corresponding preset thresholds, the number of the safety defect assessment coefficient and the material feature defect coefficient that are greater than or equal to the preset thresholds is obtained, and the number of the safety defect assessment coefficient and the material feature defect coefficient that are greater than or equal to the preset thresholds is discriminated to obtain a quality risk signal or a quality normal signal.

[0017] Preferably, the continuous utilization assessment and analysis process is as follows: a preset aging prediction model of the target battery is obtained, and then the health score of the target battery is obtained. At the same time, the usage information of the target battery is obtained. The usage information includes the capacity attenuation rate and the remaining life. The discrimination result of the usage information is obtained. The discrimination result includes qualified and unqualified. The number corresponding to the discrimination result of the usage information being qualified is obtained, and the value obtained by multiplying the number corresponding to the discrimination result of the usage information being qualified by the corresponding value of the health score is set as the continuous utilization score.

[0018] Preferably, polarization information of the target battery is obtained. The polarization information includes ohmic polarization, electrochemical polarization, and concentration polarization. The polarization information of the target battery is discriminated. If the target battery has polarization information, the overpotential value of the target battery is obtained. The overpotential value is the difference between the electrode potential and the reversible electrode potential. Among them, the reversible electrode potential represents the potential of the electrode in the reversible electrode reaction, such as during charging and discharging;

[0019] The continuous utilization score and the overpotential value are discriminated: if the continuous utilization score is greater than or equal to the preset continuous utilization score threshold and the overpotential value is less than the preset overpotential value threshold, a continuous availability signal is generated. If the continuous utilization score is less than the preset continuous utilization score threshold or the overpotential value is greater than or equal to the preset overpotential value threshold, a continuous unavailability signal is generated.

[0020] Preferably, the performance division feedback analysis process is as follows: battery performance information of the target battery is obtained. The battery performance information includes the first-level state, the quality risk signal, and the continuous availability signal. The number of the battery performance information of the target battery is obtained, and the number of the battery performance information of the target battery is discriminated: if the number of the battery performance information of the target battery = 3, a forward rotation signal is generated. If the number of the battery performance information of the target battery ≠ 3, a reverse rotation signal is generated.

[0021] The beneficial effects of the present invention are as follows:

[0022] In the present invention, an initial analysis is carried out from the perspective of the electrical performance of the target battery to understand the evaluation results of the electrical performance of the target battery. At the same time, an analysis is carried out from the perspective of the internal materials of the target battery to evaluate and process the quality and safety performance of the target battery, further providing data support for subsequent analysis, and an analysis is carried out from the perspective of continuous utilization to understand the health performance of the target battery. Then, the analysis results are integrated and judged through information feedback, and the mechanical sorting operation is intelligently controlled according to the information feedback situation to achieve the intelligent sorting and conveying of the target battery, thereby helping to improve the sorting accuracy of the target battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings;

[0024] Figure 1 is a three-dimensional structure diagram of the present invention;

[0025] Figure 2 is a top view of the structure of the present invention;

[0026] Figure 3 is a front view of the structure of the present invention;

[0027] Figure 4 is a schematic structural diagram of the sorting plate of the present invention;

[0028] Figure 5 is a system flow block diagram of the present invention.

[0029] Legend: 1, sorting rack; 2, support frame; 3, control panel; 4, transmission component; 5, positioning plate; 6, limiting plate; 7, servo motor; 8, adjusting shaft; 9, sorting plate; 10, isolation plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1: Please refer to Figures 1 to 5 As shown, the present invention is a sorting device for battery performance differences based on a battery pack disassembly module, including a sorting rack 1. A support frame 2 is fixedly connected to the upper surface of the sorting rack 1. A control panel 3 is fixedly connected to the front surface of the support frame 2. A transmission component 4 is arranged inside the sorting rack 1;

[0032] One side of the support frame 2 is fixedly connected to the positioning plate 5. One side of the positioning plate 5 and below the support frame 2 is fixedly connected with a limit plate 6. The upper surface of the limit plate 6 is fixedly connected with a servo motor 7. The lower end of the servo motor 7 is internally connected to an adjustment shaft 8 in a transmission manner. One end of the adjustment shaft 8 away from the servo motor 7 is fixedly connected with a sorting plate 9. The lower end of the positioning plate 5 is fixedly connected with a partition plate 10 above the transmission component 4.

[0033] In the embodiment of the present invention, the area above the transmission component 4 is divided into a qualified area and an unqualified area by the partition plate 10, so as to sort and convey the target battery.

[0034] In the embodiment of the present invention, when sorting the target battery, the target battery located on the transmission component 4 is analyzed by means of battery performance differences, that is, according to the analysis result of the battery performance differences, the servo motor 7 on the limit plate 6 is controlled to work, so that the servo motor 7 drives the adjustment shaft 8 to rotate, and then the adjustment shaft 8 drives the sorting plate 9 below to rotate, so as to achieve the effect of adjusting the angle of the sorting plate 9. Through the cooperation of the transmission component 4 and the sorting plate 9, the target battery enters different transmission areas respectively, that is, the qualified area and the unqualified area, so as to realize the sorting of the target battery.

[0035] The internal of the control panel 3 is provided with an analysis management platform, a basic sorting unit, a quality defect analysis unit, a continuous utilization analysis unit, a sorting discrimination unit and a screening execution unit. The analysis management platform is in one-way communication connection with the basic sorting unit, the quality defect analysis unit and the continuous utilization analysis unit. The basic sorting unit, the quality defect analysis unit and the continuous utilization analysis unit are all in one-way communication connection with the sorting discrimination unit. The sorting discrimination unit is in one-way communication connection with the screening execution unit.

[0036] The analysis management platform is used to retrieve the basic parameter information of the target battery and send the basic parameter information to the basic sorting unit.

[0037] The basic sorting unit is used to perform basic performance acquisition and analysis on the collected basic parameter information, and perform discrimination processing on the obtained parameter over-line deviation value to obtain a first-level state or a second-level state. The quality defect analysis unit is used to collect the defect information of the internal materials of the target battery and perform quality defect feedback analysis on the defect information to obtain a quality risk signal or a quality normal signal. The continuous utilization analysis unit is used to retrieve the usage information of the target battery and perform continuous utilization evaluation analysis on the usage information to obtain a continuous availability signal or a continuous unavailability signal. That is, through the analysis of the basic sorting unit, the quality defect analysis unit and the continuous utilization analysis unit, it helps to sort the target battery through battery performance differences and improve the sorting accuracy.

[0038] The sorting and discrimination unit is used to collect the battery performance information of the target battery, perform performance classification and feedback analysis on the battery performance information, and obtain a reverse signal or a forward signal, so as to sort and convey the target battery through information feedback.

[0039] Embodiment 2: The basic sorting unit is used to perform basic performance acquisition and analysis on the collected basic parameter information, that is, perform preliminary analysis and classification from the perspective of electrical performance. The specific process of basic performance acquisition and analysis is as follows:

[0040] The basic parameter information of the target battery is obtained. The basic parameter information includes open-circuit voltage, AC internal resistance, etc. At the same time, the standard basic parameter information of the target battery is obtained, and the difference between the corresponding parameter values between the basic parameter information of the target battery and the standard basic parameter information is obtained. The number of differences between the corresponding parameter values between the basic parameter information and the standard basic parameter information that is greater than the preset threshold is set as the parameter over-line deviation value, and the parameter over-line deviation value is judged and processed:

[0041] If the parameter over-line deviation value = 0, it is determined to be in the first-level state;

[0042] If the parameter over-line deviation value ≠ 0, it is determined to be in the second-level state. Among them, the performance risks of the target batteries corresponding to the first-level state and the second-level state increase in turn;

[0043] The quality defect analysis unit is used to collect the defect information of the internal materials of the target battery, perform quality defect feedback analysis on the defect information, and obtain a quality risk signal or a quality normal signal, that is, analyze from the quality perspective. The specific process of quality defect feedback analysis is as follows:

[0044] The total amount of pole piece deformation and the difference value of electrolyte distribution of the target battery are detected by X-ray or infrared imaging technology. The difference value of electrolyte distribution represents the difference between the electrolyte distribution characteristic image of the target battery and the standard electrolyte distribution characteristic image;

[0045] The weight factor coefficient corresponding to the total amount of pole piece deformation and the weight factor coefficient corresponding to the difference value of electrolyte distribution of the target battery are obtained. The total amount of pole piece deformation of the target battery is multiplied by the weight factor coefficient corresponding to the total amount of pole piece deformation, and then added to the value obtained by multiplying the difference value of electrolyte distribution by the weight factor coefficient corresponding to the difference value of electrolyte distribution to obtain the safety defect evaluation coefficient;

[0046] At the same time, the defect information of the internal materials of the target battery is obtained. The defect information includes pore characteristic images, particle morphology characteristic images, etc. The difference values between each characteristic image and the corresponding standard characteristic image are obtained, and the number of differences between the characteristic image and the corresponding standard characteristic image that is greater than the preset threshold is set as the material characteristic defect coefficient;

[0047] Compare the safety defect assessment coefficient and the material characteristic defect coefficient with the corresponding preset thresholds, obtain the number of the safety defect assessment coefficient and the material characteristic defect coefficient that are greater than or equal to the preset thresholds, and perform discrimination processing on the number of the safety defect assessment coefficient and the material characteristic defect coefficient that are greater than or equal to the preset thresholds:

[0048] If the number of the safety defect assessment coefficient and the material characteristic defect coefficient that are greater than or equal to the preset thresholds is greater than the preset threshold, generate a quality risk signal;

[0049] If the number of the safety defect assessment coefficient and the material characteristic defect coefficient that are greater than or equal to the preset thresholds is less than or equal to the preset threshold, generate a quality normal signal;

[0050] The continuous utilization analysis unit is used to retrieve the usage information of the target battery and perform continuous utilization evaluation and analysis on the usage information, that is, analyze from the perspective of sustainable usage value. The specific continuous utilization evaluation and analysis process is as follows: Obtain the preset aging prediction model of the target battery, and then obtain the health score of the target battery. At the same time, obtain the usage information of the target battery. The usage information includes the capacity attenuation rate, remaining life, etc. Obtain the discrimination result of the usage information. The discrimination result includes qualified and unqualified. Obtain the number corresponding to the qualified discrimination result of the usage information, and set the value obtained by multiplying the number corresponding to the qualified discrimination result of the usage information by the corresponding value of the health score as the continuous utilization score;

[0051] In the embodiment of the present invention, analyzing from the perspective of the continuous usage value of the target battery helps to improve the sorting accuracy;

[0052] Obtain the polarization information of the target battery. The polarization information includes ohmic polarization, electrochemical polarization, and concentration polarization. Perform discrimination processing on the polarization information of the target battery. If the target battery has polarization information, obtain the overpotential value of the target battery. The overpotential value is the difference between the electrode potential and the reversible electrode potential. Among them, the reversible electrode potential represents the potential of the electrode in the reversible electrode reaction, such as during charging and discharging;

[0053] Perform discrimination processing on the continuous utilization score and the overpotential value: If the continuous utilization score is greater than or equal to the preset continuous utilization score threshold and the overpotential value is less than the preset overpotential value threshold, generate a continuous availability signal. If the continuous utilization score is less than the preset continuous utilization score threshold or the overpotential value is greater than or equal to the preset overpotential value threshold, generate a continuous unavailability signal.

[0054] Embodiment 3: The sorting discrimination unit is used to collect the battery performance information of the target battery and perform performance classification and feedback analysis on the battery performance information, so as to sort and convey the target battery by means of information feedback. The specific performance classification and feedback analysis process is as follows:

[0055] The battery performance information of the target battery is obtained. The battery performance information includes the primary status, the quality risk signal, and the continuous availability signal. The number of the battery performance information of the target battery is obtained, and the number of the battery performance information of the target battery is discriminated:

[0056] If the number of the battery performance information of the target battery = 3, a forward rotation signal is generated. When the forward rotation signal is generated, the screening execution unit is used to respond to the forward rotation signal and immediately control the servo motor 7 to work, so that the servo motor 7 drives the sorting plate 9 to rotate clockwise by a set angle through the adjusting shaft 8, so that the target battery on the transmission component 4 enters the qualified area of the isolation plate 10. If the number of the battery performance information of the target battery ≠ 3, a reverse rotation signal is generated. When the reverse rotation signal is generated, the screening execution unit is used to respond to the reverse rotation signal and immediately control the servo motor 7 to work, so that the servo motor 7 drives the sorting plate 9 to rotate counterclockwise by a set angle through the adjusting shaft 8, so that the target battery on the transmission component 4 enters the unqualified area of the isolation plate 10. The accurate screening of the target battery is realized by means of information feedback, which helps to improve the sorting efficiency and reliability of the target battery.

[0057] Embodiment 4: The present invention also proposes a sorting method based on the battery performance difference of the battery pack disassembly module, including the following steps:

[0058] Step 1: Conveyance of the target battery;

[0059] Step 2: Perform a basic performance acquisition and analysis operation on the basic parameter information from the electrical performance angle of the target battery, that is, obtain the parameter over-line deviation value based on the basic performance acquisition and analysis, and perform a discrimination process on the parameter over-line deviation value to obtain the primary status or the secondary status;

[0060] Step 3: Perform a process of obtaining and discriminating the safety defect evaluation coefficient and the material characteristic defect coefficient based on the material quality angle of the target battery, that is, perform a quality defect feedback analysis on the defect information of the internal materials of the target battery, and perform a discrimination process on the obtained safety defect evaluation coefficient and the material characteristic defect coefficient to obtain the quality risk signal or the quality normal signal;

[0061] Step 4: Perform a process of obtaining and discriminating the continuous utilization score and the overpotential value based on the health and polarization angles of the target battery, that is, analyze the usage information and the polarization information, and perform a discrimination process on the obtained continuous utilization score and the overpotential value to obtain the continuous availability signal or the continuous unavailability signal;

[0062] Step 5: Perform an intelligent sorting operation based on the performance evaluation feedback of the target battery, that is, perform a performance division feedback analysis on the battery performance information, and intelligently control the rotation direction of the sorting plate 9 according to the obtained forward rotation signal or reverse rotation signal;

[0063] In summary, preliminary analysis is carried out from the perspective of the electrical performance of the target battery to understand the evaluation results of the electrical performance of the target battery. At the same time, analysis is carried out from the perspective of the internal materials of the target battery to evaluate and process the quality and safety performance of the target battery, further providing data support for subsequent analysis, and analysis is carried out from the perspective of continuous utilization to understand the health performance of the target battery. The analysis results are integrated and judged through information feedback, and the mechanical sorting operation is intelligently controlled according to the information feedback situation to realize the intelligent sorting and conveying of the target battery, thereby helping to improve the sorting accuracy of the target battery.

[0064] The setting of the threshold value is for the convenience of comparison. Regarding the size of the threshold value, it depends on the amount of sample data and the base quantity set by those skilled in the art for each group of sample data; as long as the proportional relationship between the parameter and the quantified value is not affected.

[0065] The size of the coefficient is a specific value obtained by quantifying each parameter for the convenience of subsequent comparison. Regarding the size of the coefficient, it depends on the amount of sample data and the corresponding operation coefficient initially set by those skilled in the art for each group of sample data; as long as the proportional relationship between the parameter and the quantified value is not affected.

[0066] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A battery performance difference sorting device based on a battery pack disassembly module, comprising a sorting rack (1), characterized in that: The upper surface of the sorting frame (1) is fixedly connected to a support frame (2), the front surface of the support frame (2) is fixedly connected to a control panel (3), and a transmission component (4) is arranged inside the sorting frame (1); A positioning plate (5) is fixedly connected to one side of the support frame (2); a limiting plate (6) is fixedly connected to one side of the positioning plate (5) and located below the support frame (2); a servo motor (7) is fixedly connected to the upper surface of the limiting plate (6); an adjusting shaft (8) is internally connected to the lower end of the servo motor (7) for transmission; a sorting plate (9) is fixedly connected to one end of the adjusting shaft (8) away from the servo motor (7); and an isolation plate (10) is fixedly connected to the lower end of the positioning plate (5) located above the transmission component (4); The upper part of the transmission component (4) is divided into a qualified area and an unqualified area by an isolation plate (10).

2. The battery performance difference sorting device based on the battery pack disassembly module according to claim 1 is characterized in that: The control panel (3) is internally provided with an analysis management platform, a basic sorting unit, a quality defect analysis unit, a continuous utilization analysis unit, a sorting and determination unit, and a screening execution unit; The analysis management platform is used to retrieve basic parameter information of the target battery and send the basic parameter information to the basic sorting unit; The basic sorting unit is used to perform basic performance acquisition analysis on the collected basic parameter information, and to perform discrimination processing on the obtained parameter over-line deviation value to obtain the primary state or the secondary state. The quality defect analysis unit is used to collect the defect information of the internal material of the target battery, and to perform quality defect feedback analysis on the defect information to obtain a quality risk signal or a normal quality signal. The continuous use analysis unit is used to retrieve the use information of the target battery, and to perform continuous use evaluation analysis on the use information to obtain a continuous available signal or a continuous unavailable signal. The sorting and discrimination unit is used to collect the battery performance information of the target battery, and perform performance classification feedback analysis on the battery performance information to obtain a reverse signal or a forward signal.

3. The battery performance difference sorting device based on the battery pack disassembly module according to claim 2 is characterized in that: The basic performance acquisition and analysis process is as follows: basic parameter information of the target battery is obtained, the basic parameter information includes open-circuit voltage and AC internal resistance, and standard basic parameter information of the target battery is obtained at the same time, and the difference between the numerical values ​​of corresponding parameters between the basic parameter information of the target battery and the standard basic parameter information is obtained, and the number of differences between the numerical values ​​of corresponding parameters between the basic parameter information and the standard basic parameter information that are greater than a preset threshold is set as a parameter over-line deviation value, and the parameter over-line deviation value is discriminated and processed to obtain a primary state or a secondary state.

4. The battery performance difference sorting device based on the battery pack disassembly module according to claim 2 is characterized in that: The quality defect feedback analysis process is as follows: the total amount of pole piece deformation and electrolyte distribution difference value of the target battery are detected by X-ray or infrared imaging technology, and the electrolyte distribution difference value represents the difference between the electrolyte distribution characteristic image of the target battery and the standard electrolyte distribution characteristic image; The weight factor coefficient corresponding to the total amount of pole piece deformation of the target battery and the weight factor coefficient corresponding to the electrolyte distribution difference value are obtained, the total amount of pole piece deformation of the target battery is multiplied by the weight factor coefficient corresponding to the total amount of pole piece deformation, and the value obtained by multiplying the electrolyte distribution difference value by the weight factor coefficient corresponding to the electrolyte distribution difference value is set as the safety defect assessment coefficient.

5. The battery performance difference sorting device based on the battery pack disassembly module according to claim 4 is characterized in that: Obtain defect information of the target battery internal material, the defect information includes pore characteristic images and particle morphology characteristic images, obtain the difference value between each characteristic image and the corresponding standard characteristic image, and set the number of difference values ​​between the characteristic image and the corresponding standard characteristic image greater than a preset threshold as the material characteristic defect coefficient; The safety defect assessment coefficient and the material characteristic defect coefficient are compared and analyzed with the corresponding preset thresholds to obtain the number of safety defect assessment coefficients and material characteristic defect coefficients that are greater than or equal to the preset thresholds, and the number of safety defect assessment coefficients and material characteristic defect coefficients that are greater than or equal to the preset thresholds is discriminated and processed to obtain a quality risk signal or a normal quality signal.

6. The battery performance difference sorting device based on the battery pack disassembly module according to claim 2 is characterized in that: The continuous utilization evaluation and analysis process is as follows: obtaining a preset aging prediction model of the target battery, and then obtaining a health score of the target battery, and at the same time obtaining usage information of the target battery, the usage information including capacity attenuation rate and remaining life, obtaining a judgment result of the usage information, the judgment result including qualified and unqualified, obtaining the number corresponding to the qualified judgment result of the usage information, and setting the value obtained by multiplying the number corresponding to the qualified judgment result of the usage information by the corresponding value of the health score as the continuous utilization score.

7. The battery performance difference sorting device based on the battery pack disassembly module according to claim 2 is characterized in that: Obtain the polarization information of the target battery, which includes ohmic polarization, electrochemical polarization and concentration polarization. Perform discrimination processing on the polarization information of the target battery. If the target battery has polarization information, obtain the overpotential value of the target battery. The overpotential value is the difference between the electrode potential and the reversible electrode potential, where the reversible electrode potential represents the potential of the electrode in a reversible electrode reaction, such as during charging and discharging. The continuous utilization score and the overpotential value are distinguished and processed: if the continuous utilization score is greater than or equal to the preset continuous utilization score threshold, and the overpotential value is less than the preset overpotential value threshold, a continuous availability signal is generated; if the continuous utilization score is less than the preset continuous utilization score threshold, or the overpotential value is greater than or equal to the preset overpotential value threshold, a continuous unavailability signal is generated.

8. The battery performance difference sorting device based on the battery pack disassembly module according to claim 2 is characterized in that: The performance partitioning feedback analysis process is as follows: the battery performance information of the target battery is obtained, the battery performance information includes the primary status, the quality risk signal and the continuously available signal, the number of battery performance information of the target battery is obtained, and the number of battery performance information of the target battery is judged and processed: if the number of battery performance information of the target battery = 3, a forward signal is generated; if the number of battery performance information of the target battery ≠ 3, a reverse signal is generated.

9. A method for sorting battery performance differences based on a battery pack disassembly module, used in a device for sorting battery performance differences based on a battery pack disassembly module as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Delivery of target battery; Step 2: Perform basic performance acquisition and analysis operations on basic parameter information from the perspective of the electrical performance of the target battery; Step 3: Acquisition and identification of safety defect assessment coefficients and material characteristic defect coefficients based on the material quality of the target battery; Step 4: Obtaining and judging the continuous utilization score and overpotential value based on the health and polarization angle of the target battery; Step 5: Intelligent sorting operation based on the performance evaluation feedback of the target battery.

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