Waste power battery pack echelon sorting system and method

Abstract

The invention relates to a waste power battery pack echelon sorting system and method.The system comprises a conveying belt and a detection box, the conveying belt penetrates through the detection box, and the conveying belt is used for conveying waste power battery packs into the detection box; the multi-dimensional detection assembly is installed in the detection box body, and the multi-dimensional detection assembly is used for collecting feature data of the waste power battery pack; the characteristic data comprises the weight of the waste power battery pack, the escaping gas component and the appearance image; and the control system is in communication connection with the conveying belt and the multi-dimensional detection assembly, and the control system is used for controlling starting and stopping of the conveying belt and the multi-dimensional detection assembly, receiving data collected by the multi-dimensional detection assembly and analyzing and processing the data so as to determine the recycling grade of the waste power battery pack. The waste power battery pack is recycled by collecting the weight, the escaping gas components and the appearance image data of the waste power battery pack, and the recycling grade is judged more accurately.

Description

Technical Field

[0001] The present invention relates to the technical field of battery recycling, and in particular to a system and method for tiered sorting of waste power battery packs. Background Art

[0002] With the rapid development of the electric vehicle market, the installed capacity of power battery packs has increased year by year. However, the service life of power battery packs is limited, and the generation of a large number of waste power battery packs has brought a heavy burden to the environment, so the recycling of waste power battery packs is very important. The existing means of recycling waste power battery packs mainly adopts tiered sorting. The tiered sorting of waste power batteries includes detection, disassembly, sorting, repair and reorganization. Most of the current recycling methods do not classify after detecting the health status of the battery. They are all disassembled and reused according to the more serious or seriously worn battery packs. For battery packs that do not meet the specifications or are slightly damaged, this treatment method is a bit too wasteful. Classification and repair, reorganization for energy storage or backup power, etc., to achieve resource reuse and promote circular economy. Among them, the detection process provides a basis for the subsequent process of tiered sorting of waste power batteries, so the detection process is particularly important.

[0003] However, in actual application scenarios, used batteries may release harmful gases or undergo quality changes due to damage and aging, and these problems are difficult to accurately judge based on appearance data alone. If the detection of harmful gases is ignored during the inspection process, it will be impossible to fully grasp the internal state of the battery, because the presence of harmful gases may indicate abnormal chemical reactions within the battery or electrolyte leakage. Similarly, the lack of quality inspection may also lead to misjudgment of the actual performance of the battery, because changes in quality may reflect damage to the internal structure of the battery or the loss of active substances. These neglected factors may mislead the classification and handling of batteries. Therefore, relying solely on appearance data for classification often leads to inaccurate classification results, which in turn affects the effective recycling and resource reuse of used power batteries. Summary of the invention

[0004] The object of the present invention is to provide a system and method for tiered sorting of waste power battery packs, so as to solve the problem of inaccurate classification caused by classifying waste power batteries only by relying on appearance data in the prior art.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is as follows: A waste power battery pack sorting system, comprising: A conveyor belt and a detection box, wherein the conveyor belt is arranged to penetrate the detection box, and the conveyor belt is used to transfer the waste power battery pack into the detection box, and the conveyor belt includes a plurality of conveyor belt pieces, and a first clamping piece and a second clamping piece are formed on opposite sides of the conveyor belt piece, so that the conveyor belt piece can be clamped or released by the first clamping piece and the second clamping piece; A multi-dimensional detection component, the multi-dimensional detection component is installed in the detection box, and the multi-dimensional detection component is used to collect characteristic data of the waste power battery pack; the characteristic data includes the weight, escaped gas composition and appearance image of the waste power battery pack; A control system, wherein the control system is in communication with the conveyor belt and the multi-dimensional detection component, and the control system is used to control the start and stop of the conveyor belt and the multi-dimensional detection component; and receive characteristic data collected by the multi-dimensional detection component, and analyze and process the characteristic data to determine the recycling level of the waste power battery pack.

[0006] According to the above technical means, through the multi-dimensional detection component, the three key data of the weight, escaped gas composition and appearance image of the waste power battery pack can be collected at the same time, and the collected feature data is more comprehensive; by comprehensively considering the weight change, the escaped gas composition and the degree of appearance defects, the state of the waste power battery pack can be more accurately evaluated, thereby determining its recycling level, and significantly improving the accuracy and reliability of classification; the control system can not only control the start and stop of the conveyor belt and the detection component, but also automatically receive and process the collected data, thereby realizing an efficient and automated sorting process, significantly improving the sorting efficiency and reducing labor costs; the conveyor belt is composed of a plurality of conveyor belt pieces that are clamped together, and each of the conveyor belt pieces can be separated from other conveyor belt pieces by releasing the clamping, so that the separation process can be simple and convenient, and when one or more of the conveyor belt pieces are separated from other conveyor belt pieces, other conveyor belt pieces will not be damaged, thereby protecting the stability and integrity of the conveyor belt.

[0007] Furthermore, it also includes a clamping assembly, which is rotatably installed in the detection box; the clamping assembly is used to clamp the waste power battery pack on the conveyor belt and rotate, so that the multi-dimensional detection assembly can collect the appearance image of the waste power battery pack.

[0008] According to the above-mentioned technical means, the clamping assembly can clamp the used power battery pack and rotate it, so that the multi-dimensional detection assembly can collect the appearance image of the battery pack from multiple angles. Through all-round appearance detection, the appearance defects of the used power battery pack (such as deformation, cracks, corrosion, etc.) can be more comprehensively identified, thereby improving the accuracy and reliability of appearance detection.

[0009] Furthermore, the clamping assembly includes a base, a rotating assembly and a clamp, the base is installed in the detection box; the clamp is rotatably installed on the base through the rotating assembly; the clamp is used to clamp the waste power battery pack.

[0010] According to the above technical means, the clamp is installed on the base through the rotating component, so that the clamp can rotate flexibly. During the inspection process, the clamping component can clamp the used power battery pack and rotate it through the rotating component, so that the multi-dimensional inspection component can collect the appearance image of the battery pack from different angles, thereby improving the comprehensiveness and accuracy of the appearance inspection; the design of the clamp enables the clamping component to accurately clamp the used power battery pack, which can ensure that the used power battery pack remains stable during the inspection process, avoiding shaking or falling off due to loose clamping, thereby improving the reliability of the inspection.

[0011] Furthermore, the clamp includes a first jaw, a second jaw and a drive assembly, wherein the drive assembly is connected to the first jaw and the second jaw, and the drive assembly can drive the first jaw and the second jaw to approach each other to clamp the used power battery pack; the drive assembly can drive the first jaws away from each other to release the used power battery pack.

[0012] According to the above technical means, the first clamping jaw and the second clamping jaw can move closer to or farther away from each other to clamp or release the waste power battery pack.

[0013] Furthermore, it also includes a length detection component, which is installed outside the detection box and on one side of the conveyor belt; the battery pack length detection component is used to detect the length of the waste power battery pack passing on the conveyor belt and upload it to the control system; The control system is respectively connected to the drive assembly and the length detection assembly for communication. The control system can control the start and stop of the drive assembly according to the length of the used power battery pack, thereby adjusting the distance between the first clamp and the second clamp to make the distance adapt to the length of the used power battery pack; the control system can match one or more conveyor belt pieces with the same length according to the length of the used power battery pack to carry the used power battery pack.

[0014] According to the above-mentioned technical means, the introduction of the battery pack length detection component ensures that the distance between the clamping jaws can accurately adapt to the actual size of the battery pack, making the clamping more secure and avoiding the shaking of the battery pack or unstable clamping caused by too large or too small distance between the clamping jaws. At the same time, the stable clamping state provides more ideal detection conditions for multi-dimensional detection components (such as image acquisition systems), thereby further improving the accuracy and reliability of detection; by automatically detecting the length of the waste power battery pack and adjusting the distance between the clamping jaws, it can seamlessly handle waste power battery packs of different specifications and sizes, which not only avoids clamping failure or detection errors caused by inconsistent battery pack sizes, but also enhances the versatility and flexibility of the clamping component, enabling it to adapt to a wider range of battery pack types.

[0015] Furthermore, the multi-dimensional detection component includes a pressure sensor, a gas sensor and an image acquisition system; the gas sensor is installed in the detection box; the pressure sensor is located below the conveyor belt and close to the clamping component; the image acquisition system is located inside the detection box.

[0016] According to the above technical means, the weight change of the battery pack can be detected by the pressure sensor, so as to determine whether the battery pack has lost mass due to the loss of internal chemical substances or structural damage. The gas sensor can monitor the gas composition of the battery pack in real time to determine whether there is any harmful or hazardous gas leakage, thereby evaluating the safety of the battery pack. The image acquisition system can be used to collect the appearance image of the battery pack, and combined with image processing technology, it can detect the appearance defects of the battery pack, such as deformation, cracks, corrosion, etc.

[0017] Furthermore, a method for sorting waste power battery packs in stages is also provided, the method comprising the following steps: S1: The multi-dimensional detection component collects and obtains the feature data; S2: The control system analyzes and processes the appearance image, weight and escaped gas composition of the waste power battery pack to obtain the appearance defect degree, weight change data and proportion of harmful components in the escaped gas of the waste power battery pack; S3: The control system conducts a comprehensive evaluation on the degree of appearance defects, weight change data and proportion of harmful components in the escaped gas of the waste power battery pack to determine the recycling level of the waste power battery pack.

[0018] According to the above-mentioned technical means, through multi-dimensional detection components, three key data of the weight, escaped gas composition and appearance image of the waste power battery pack can be collected at the same time, and the collected feature data is more comprehensive; by comprehensively considering the weight change, escaped gas composition and the degree of appearance defects, the state of the waste power battery pack can be more accurately evaluated, thereby determining its recycling level, significantly improving the accuracy and reliability of classification, avoiding the limitations of a single indicator, and being able to comprehensively evaluate the state of the battery pack, thereby more accurately determining its recycling level. The fusion analysis of multi-dimensional data can effectively reduce misjudgment and improve the reliability of sorting results.

[0019] Furthermore, the processing of the appearance image of the used power battery pack in S2 includes: denoising and image enhancement processing of the appearance image, data fusion of the processed appearance image, and then inputting the fused appearance image into a neural network model for detection to obtain the degree of appearance defects of the used power battery pack.

[0020] Based on the above technical means, the neural network model can automatically learn and identify defect features in images, which not only improves detection efficiency, but also reduces misjudgments caused by human factors and further improves accuracy.

[0021] Furthermore, the processing of the weight of the used power battery pack in S2 includes: obtaining weight change data of the used power battery pack by comparing the weight of the used power battery pack with a preset weight of the power battery pack.

[0022] According to the above-mentioned technical means, weight changes are a direct reflection of the loss of chemical substances, structural damage or electrolyte drying up inside the battery pack. By comparing weight changes, the degree of battery pack loss can be quantified, providing an important basis for the classification of recycling levels of waste power battery packs. By accurately measuring weight changes, short circuit and thermal runaway safety hazards inside waste battery packs can be identified in advance.

[0023] Furthermore, the processing of the escaped gas of the waste power battery pack in S2 includes: obtaining the proportion of the escaped gas components of the waste power battery pack by comparing the escaped gas of the waste power battery pack with the escaped gas of a preset power battery pack.

[0024] Based on the above-mentioned technical means, accurate detection of the composition of the escaped gas can detect possible thermal runaway, short circuit or other faults inside the battery pack in advance, thus avoiding potential safety accidents.

[0025] Beneficial effects of the present invention: 1. Through multi-dimensional detection components, three key data, namely weight, escaped gas composition and appearance image, of used power battery packs can be collected simultaneously, and the collected feature data is more comprehensive; 2. By comprehensively considering weight changes, escaped gas composition and the degree of appearance defects, the status of waste power battery packs can be more accurately assessed, thereby determining their recycling level, significantly improving the accuracy and reliability of classification; 3. The control system can not only control the start and stop of the conveyor belt and detection components, but also automatically receive and process the collected data, thereby realizing an efficient and automated sorting process, significantly improving sorting efficiency and reducing labor costs; 4. The conveyor belt is composed of a plurality of conveyor belt pieces that are connected by clamping. Each of the conveyor belt pieces can be separated from the other conveyor belt pieces by releasing the clamping, so that the separation process can be simple and convenient, and when one or more conveyor belt pieces are separated from the other conveyor belt pieces, the other conveyor belt pieces will not be damaged, thereby protecting the stability and integrity of the conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the first embodiment; Figure 2 This is a schematic diagram of the specific structure of the flip assembly of the present embodiment; Figure 3 This is a side view schematic diagram of the detection process of the first embodiment; Figure 4 This is a schematic structural diagram of a conveyor belt piece according to the first embodiment of the present invention; Figure 5 is a cross-sectional view of a conveyor belt piece of the present embodiment; Figure 6 This is a schematic diagram of the flow chart of the second embodiment.

[0027] Among them, 1- conveyor belt, 11- conveyor belt piece, 111- first clamping member, 112- second clamping member, 113- limiting member; 2-Detection box; 3-clamping assembly, 31-base, 32-rotating assembly, 33-clamp, 331-first clamping jaw, 332-second clamping jaw, 333-driving assembly; 4-length detection component; 5-pressure sensor; 6-image acquisition system, 61-first acquisition component, 62-second acquisition component, 63-third acquisition component; 7-Open and close the door. DETAILED DESCRIPTION

[0028] The following will describe the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are only for illustrating the present invention, not for limiting the scope of protection of the present invention.

[0029] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0030] Embodiment 1 like Figure 1 As shown, this embodiment proposes a waste power battery pack sorting system, including: A conveyor belt 1 and a detection box 2, wherein the conveyor belt 1 is arranged to penetrate the detection box 2, and is used to transfer the waste power battery pack into the detection box 2, wherein the conveyor belt 1 comprises a plurality of conveyor belt pieces 11, and a first clamping member 111 and a second clamping member 112 are formed on opposite sides of the conveyor belt pieces 11, so that the conveyor belt pieces 11 can be clamped or unclamped by the first clamping member 111 and the second clamping member 112; A multi-dimensional detection component (not shown in the figure), which is installed in the detection box 2 and is used to collect characteristic data of the waste power battery pack; the characteristic data includes the weight, escaped gas composition and appearance image of the waste power battery pack; A control system (not shown in the figure) is connected in communication with the conveyor belt 1 and the multi-dimensional detection component. The control system is used to control the start and stop of the conveyor belt 1 and the multi-dimensional detection component, and to receive characteristic data collected by the multi-dimensional detection component, analyze and process the characteristic data to determine the recycling level of the waste power battery pack.

[0031] like Figure 1As shown, the use process of the present invention is: the conveyor belt 1 and the detection box 2 are installed in sequence, and the waste power battery pack is conveyed to the detection box 2 through the conveyor belt 1. When the multi-dimensional detection component starts to detect the waste power battery pack, the conveyor belt 1 stops running, the multi-dimensional detection component detects the waste power battery pack, and transmits the collected feature data to the control system. The control system analyzes the weight, escaped gas composition and appearance image of the waste power battery pack in the feature data to determine the recycling level of the waste power battery pack. The multi-dimensional detection component stops detecting, and the conveyor belt 1 continues to run until the classification of the waste power battery pack is completed, and then the waste power battery pack tiered sorting system is stopped.

[0032] Through the multi-dimensional detection component, the three key data of the weight, escaped gas composition and appearance image of the waste power battery pack can be collected at the same time, and the collected feature data is more comprehensive; by comprehensively considering the weight change, the escaped gas composition and the degree of appearance defects, the state of the waste power battery pack can be more accurately evaluated, thereby determining its recycling level, which significantly improves the accuracy and reliability of classification; the control system can not only control the start and stop of the conveyor belt 1 and the multi-dimensional detection component, but also automatically receive and process the collected data, thereby realizing an efficient and automated sorting process, significantly improving the sorting efficiency and reducing labor costs; the conveyor belt is composed of a plurality of conveyor belt pieces 11 that are snap-connected, and each conveyor belt piece 11 can be separated from other conveyor belt pieces 11 by releasing the snap-connection, so that the separation process can be simple and convenient, and when one or more conveyor belt pieces 11 are separated from other conveyor belt pieces 11, other conveyor belt pieces 11 will not be damaged, thereby protecting the stability and integrity of the conveyor belt 1.

[0033] like Figure 1 As shown, in this embodiment, a clamping assembly 3 is also included, which is rotatably installed in the detection box 2; the clamping assembly 3 is used to clamp the waste power battery pack on the conveyor belt 1 and rotate it, so that the multi-dimensional detection assembly can collect the appearance image of the waste power battery pack.

[0034] like Figure 1 As shown, preferably, there are two groups of clamping assemblies 3, which are respectively located on both sides of the conveyor belt 1.

[0035] The clamping component 3 can clamp the used power battery pack and rotate it, so that the multi-dimensional detection component can collect the appearance image of the battery pack from multiple angles. Through all-round appearance detection, the appearance defects of the battery pack (such as deformation, cracks, corrosion, etc.) can be more comprehensively identified, thereby improving the accuracy and reliability of appearance detection.

[0036] like Figure 1 and Figure 2As shown, in this embodiment, the clamping assembly 3 includes a base 31, a rotating assembly 32 and a clamp 33. The base 31 is installed in the detection box 2; the clamp 33 is rotatably installed on the base 31 through the rotating assembly 32; the clamp 33 is used to clamp the waste power battery pack.

[0037] The clamp 33 is installed on the base 31 through the rotating component 32, so that the clamp 33 can rotate flexibly. During the detection process, the clamping component 3 can clamp the used power battery pack and rotate it through the rotating component 32, so that the multi-dimensional detection component can collect the appearance image of the battery pack from different angles, thereby improving the comprehensiveness and accuracy of the appearance detection; the design of the clamp 33 enables the clamping component 3 to accurately clamp the used power battery pack, which can ensure that the battery pack remains stable during the detection process, avoid shaking or falling off due to loose clamping, thereby improving the reliability of the detection.

[0038] like Figure 1 and Figure 2 As shown, in this embodiment, the clamp 33 includes a first clamp 331, a second clamp 332 and a driving assembly 333. The driving assembly 333 and the first clamp 331 can drive the first clamp 331 and the second clamp 332 to move closer to each other to clamp the used power battery pack; the driving assembly 333 can drive the first clamp 331 and the second clamp 332 to move away from each other to release the used power battery pack. The first clamp 331 and the second clamp 332 can move closer to or away from each other to clamp or release the used power battery pack.

[0039] like Figure 1 As shown, in this embodiment, a length detection component 4 is also included, and the battery pack length detection component 4 is installed outside the detection box 2 and installed on one side of the conveyor belt 1; the battery pack length detection component 4 is used to detect the length of the waste power battery pack passing on the conveyor belt 1 and upload it to the control system; The control system is respectively communicated with the driving component 333 and the length detection component 4, and the control system can control the start and stop of the driving component 333 according to the length of the used power battery pack, thereby adjusting the distance between the first clamp 331 and the second clamp 332 so that the distance adapts to the length of the used power battery pack; the control system can match one or more conveyor belt pieces 11 with the same length according to the length of the used power battery pack to carry the used power battery pack.

[0040] Preferably, there are two groups of battery pack length detection components 4, which are stacked and distributed on both sides of the conveyor belt.

[0041] The introduction of the battery pack length detection component 4 ensures that the spacing between the first clamping jaw 331 and the second clamping jaw 332 can accurately adapt to the actual size of the battery pack, making the clamping more secure and avoiding the shaking or unstable clamping of the waste power battery pack caused by the spacing between the first clamping jaw 331 and the second clamping jaw 332 being too large or too small. At the same time, the stable clamping state provides a more ideal detection condition for the multi-dimensional detection component (such as the image acquisition system 6), thereby further improving the accuracy and reliability of the detection; by automatically detecting the battery pack length and adjusting the spacing between the first clamping jaw 331 and the second clamping jaw 332, waste power battery packs of different specifications and sizes can be seamlessly processed, which not only avoids clamping failure or detection error caused by inconsistent battery pack size, but also enhances the versatility and flexibility of the clamping component 3, so that it can adapt to a wider range of battery pack types.

[0042] At the same time, limiting members 113 are formed on both sides of the conveyor belt 1 to prevent the used power battery packs from being separated from the conveyor belt 1 during the process of the conveyor belt 1 conveying the used power battery packs, thereby improving the safety of the conveyor belt 1.

[0043] Preferably, Figure 1 As shown, in this embodiment, the multi-dimensional detection component includes a pressure sensor 5, a gas sensor (not shown in the figure) and an image acquisition system 6; the gas sensor is installed in the detection box 2; and is close to the clamping component 3; the image acquisition system 6 is located inside the detection box 2.

[0044] The pressure sensor 5 can detect the weight change of the battery pack, and determine whether the waste power battery pack has lost mass due to the loss of internal chemical substances or structural damage. The gas sensor can monitor the gas composition of the battery pack in real time to determine whether there is any harmful or hazardous gas leakage, thereby evaluating the safety of the waste power battery pack. The image acquisition system 6 can collect the appearance image of the waste power battery pack, and combined with image processing technology, it can detect the appearance defects of the waste power battery pack, such as deformation, cracks, corrosion, etc.

[0045] like Figure 1 As shown, preferably, the image acquisition system 6 includes a first acquisition component 61, a second acquisition component 62 and a third acquisition component 63. The first acquisition component 61 is located on the top of the detection box 2 and is used to acquire appearance images of four surfaces of the waste power battery pack. The second acquisition component 62 and the third acquisition component 63 are respectively located on both sides of the conveyor belt 1 and are used to acquire appearance images of two surfaces of the waste power battery pack. The first acquisition component 61, the second acquisition component 62 and the third acquisition component 63 can acquire the appearance images of the six surfaces of the waste power battery pack, and can more comprehensively detect the appearance defects of the waste power battery pack.

[0046] like Figure 1As shown, preferably, a lifting assembly (not shown in the figure) is further included, and the lifting assembly is located below the pressure sensor 5, so that the lifting assembly can lift the transmission belt 11 with the used power battery pack. If the used power battery pack is aged to the point that the structure is very loose, the first clamp 331 and the second clamp 332 will drop the fragments when clamping it, so as to prevent the fragments from scattering around and causing the weight of the used power battery pack to be inaccurate.

[0047] like Figure 3 As shown, preferably, two groups of switch doors 7 are also included, and each switch door 7 is respectively installed on the detection box 2, so that during the detection process of the waste power battery pack by the multi-dimensional detection component, the two groups of switch doors 7 can abut against each other, so that the gas sensor can detect the gas emitted from the waste power battery pack without being disturbed by external gas.

[0048] In summary, if Figure 1~Figure 5 As shown, the use process of the present invention is as follows: the entire system is installed in sequence, and the conveyor belt 1 conveys the waste power battery pack, such as Figure 1 As shown, the direction of the arrow represents the conveying direction of the waste power battery pack. The waste power battery pack first passes through the length detection component 4 to obtain the length data of the waste power battery pack, and the length data is transmitted to the control system. The control system selects the number of conveyor belt pieces 11 that match the length data to form a tray to carry the waste power battery pack, and then transmits it to the inside of the detection box 2. At this time, the conveyor belt 1 stops running, the switch door 7 is closed, and the lifting component raises the transmission belt piece 11 with the waste power battery pack and releases the clamping connection with other conveyor belt pieces 11. The pressure sensor 5 and the gas sensor respectively obtain the weight data and the escaped gas composition of the waste power battery pack and transmit them to the control system. The clamping component 3 The power battery pack is clamped and rotated, and at the same time, the first collecting component 61 obtains the appearance images of the four sides of the waste power battery pack. The conveyor belt 1 runs the waste power battery pack through the second collecting component 62 and the third collecting component 63 to obtain the appearance images of the other two sides of the waste power battery pack (there is no requirement for the order in which the waste power battery pack passes through the clamping component 3, the second collecting component 62 and the third collecting component 63) and transmits them to the control system. The control system analyzes and processes the weight data, the escaped gas composition and the appearance images of the six sides of the waste power battery pack to determine the recycling level of the waste power battery pack, opens the switch door 7 and starts the conveyor belt 1, and repeats the above operations until the sorting is completed.

[0049] Embodiment 2 like Figure 1 and Figure 6 As shown, in this embodiment, a method for sorting waste power battery packs in stages is also included, comprising the following steps: S1: The multi-dimensional detection component collects feature data; S2: The control system analyzes and processes the appearance image, weight and escaped gas composition of the waste power battery pack to obtain the appearance defect degree, weight change data and proportion of harmful components in the escaped gas of the waste power battery pack; S3: The control system conducts a comprehensive evaluation of the degree of appearance defects, weight change data and the proportion of harmful components in the escaped gas of the used power battery pack to determine the recycling level of the used power battery pack.

[0050] Through multi-dimensional detection components, three key data of waste power battery packs, namely weight, escaped gas composition and appearance image, can be collected simultaneously, and the collected feature data is more comprehensive; by comprehensively considering weight changes, escaped gas composition and the degree of appearance defects, the state of waste power battery packs can be more accurately evaluated, thereby determining their recycling level, significantly improving the accuracy and reliability of classification, avoiding the limitations of a single indicator, and being able to comprehensively evaluate the state of the battery pack, thereby more accurately determining its recycling level. The fusion analysis of multi-dimensional data can effectively reduce misjudgments and improve the reliability of sorting results.

[0051] Preferably, the comprehensive evaluation is specifically to score the degree of appearance defects, weight change data and proportion of harmful components in the escaped gas of the used power battery pack respectively to obtain a first scoring result, a second scoring result and a third scoring result, and to perform weighted addition on the first scoring result, the second scoring result and the third scoring result to obtain the scoring result.

[0052] like Figure 1 and Figure 6 As shown, in this embodiment, the processing of the appearance image of the waste power battery pack in S2 includes: denoising and image enhancement processing of the appearance image, data fusion of the processed appearance image, and then inputting the fused appearance image into the neural network model for detection to obtain the appearance defect degree of the waste power battery pack. The neural network model can automatically learn and identify defect features in the image without manually setting complex detection rules, which not only improves the detection efficiency, but also reduces misjudgments caused by human factors, further improving the intelligence level of the system.

[0053] Preferably, the neural network model used is a pre-trained one for detecting appearance defects of waste power battery packs, such as a Resnet50 neural network model.

[0054] Preferably, data fusion of the processed appearance image specifically includes stitching images of each perspective of the appearance image of the used power battery pack to obtain three-dimensional image data of the used power battery pack, so as to more directly detect bulging or denting problems in appearance defects.

[0055] Preferably, an image to be inspected of a battery to be inspected is obtained, wherein the image to be inspected includes: inputting the image to be inspected of the battery to be inspected into a battery appearance defect recognition model for feature extraction, extracting low-order features such as edges, line segments, and contours of the image to be inspected based on a convolution module, and integrating the low-order features based on a downsampling convolution module; performing secondary integration of the integrated low-order features based on a fully connected neural network, performing appearance defect detection on the battery, and outputting a detection result.

[0056] Preferably, the appearance image also includes an identity identification code of the used power battery pack, and the appearance image data and weight data of the used power battery pack in a factory state can be obtained through the identity identification code of the used power battery pack.

[0057] like Figure 1 and Figure 6 As shown, in this embodiment, processing the weight of the waste power battery pack in S2 includes: obtaining weight change data of the waste power battery pack by comparing the weight of the waste power battery pack with a preset weight of the power battery pack.

[0058] Weight change is a direct reflection of the loss of chemical substances, structural damage or electrolyte drying up inside the battery pack. By comparing weight changes, the degree of loss of used power battery packs can be quantified, providing an important basis for the classification of recycling levels of used power battery packs. By accurately measuring weight changes, short circuit and thermal runaway safety hazards inside used power battery packs can be identified in advance.

[0059] Preferably, the weight data of the used power battery pack in the factory state is a preset weight of the power battery pack.

[0060] like Figure 1 and Figure 6 As shown, in this embodiment, the processing of the escaped gas of the waste power battery pack in S2 includes: comparing the escaped gas of the waste power battery pack with the escaped gas of the preset power battery pack to obtain the proportion of harmful components in the escaped gas of the waste power battery pack. Accurate detection of the escaped gas composition can detect thermal runaway, short circuit or other faults that may exist in the waste power battery pack in advance, avoiding potential safety accidents.

[0061] Preferably, the harmful components of the gas include hydrogen sulfide, carbon monoxide, methane, carbon fluoride, etc.

[0062] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or change made by a person skilled in the art based on the present invention is within the protection scope of the present invention.

Claims

1. A waste power battery pack sorting system, characterized in that: include: A conveyor belt (1) and a detection box (2), wherein the conveyor belt (1) is arranged to penetrate the detection box (2), and the conveyor belt (1) is used to transfer the waste power battery pack into the detection box (2), and the conveyor belt (1) comprises a plurality of conveyor belt pieces (11), and a first clamping piece (111) and a second clamping piece (112) are formed on opposite sides of the conveyor belt piece (11), so that the conveyor belt piece (11) can be clamped or released by the first clamping piece (111) and the second clamping piece (112); A multi-dimensional detection component, the multi-dimensional detection component is installed in the detection box (2), and the multi-dimensional detection component is used to collect characteristic data of the waste power battery pack; the characteristic data includes the weight, escaped gas composition and appearance image of the waste power battery pack; A control system, the control system being in communication with the conveyor belt (1) and the multi-dimensional detection component, the control system being used to control the start and stop of the conveyor belt (1) and the multi-dimensional detection component; and receiving characteristic data collected by the multi-dimensional detection component, and analyzing and processing the characteristic data to determine the recycling level of the waste power battery pack.

2. A waste power battery pack sorting system according to claim 1, characterized in that: It also comprises a clamping assembly (3), the clamping assembly (3) being rotatably mounted in the detection box (2); the clamping assembly (3) being used to clamp the waste power battery pack on the conveyor belt (1) and rotate so that the multi-dimensional detection assembly can collect an appearance image of the waste power battery pack.

3. A waste power battery pack sorting system according to claim 2, characterized in that: The clamping assembly (3) comprises a base (31), a rotating assembly (32) and a clamp (33); the base (31) is mounted in the detection box (2); the clamp (33) is rotatably mounted on the base (31) via the rotating assembly (32); and the clamp (33) is used to clamp the waste power battery pack.

4. A waste power battery pack sorting system according to claim 3, characterized in that: The clamp (33) comprises a first clamp (331), a second clamp (332) and a driving component (333); the driving component (333) is connected to the first clamp (331) and the second clamp (332); the driving component (333) is capable of driving the first clamp (331) and the second clamp (332) to move closer to each other so as to clamp the used power battery pack; and the driving component (333) is capable of driving the first clamp (331) and the second clamp (332) to move away from each other so as to release the used power battery pack.

5. A waste power battery pack sorting system according to claim 4, characterized in that: It also comprises a length detection component (4), the battery pack length detection component (4) being installed outside the detection box (2) and installed on one side of the conveyor belt (1); the battery pack length detection component (4) is used to detect the length of the waste power battery pack passing on the conveyor belt (1) and upload it to the control system; The control system is respectively connected to the drive assembly (333) and the length detection assembly (4) for communication, and the control system can control the start and stop of the drive assembly (333) according to the length of the used power battery pack, thereby adjusting the distance between the first clamping jaw (331) and the second clamping jaw (332) so that the distance is adapted to the length of the used power battery pack; the control system can match one or more conveyor belt pieces (11) of the same length according to the length of the used power battery pack to carry the used power battery pack.

6. A waste power battery pack sorting system according to claim 2, characterized in that: The multi-dimensional detection component comprises a pressure sensor (5), a gas sensor and an image acquisition system (6); the pressure sensor (5) is located below the conveyor belt (1) and close to the clamping component (3); the gas sensor is installed in the detection box (2); and the image acquisition system (6) is located inside the detection box (2).

7. A method for sorting waste power battery packs in stages, characterized in that: Using the sorting system of any one of claims 1 to 6, the method comprises the following steps: S1: The multi-dimensional detection component collects and obtains the feature data; S2: The control system analyzes and processes the appearance image, weight and escaped gas composition of the waste power battery pack to obtain the appearance defect degree, weight change data and proportion of harmful components in the escaped gas of the waste power battery pack; S3: The control system conducts a comprehensive evaluation on the degree of appearance defects, weight change data and proportion of harmful components in the escaped gas of the waste power battery pack to determine the recycling level of the waste power battery pack.

8. A method for sorting waste power battery packs according to claim 7, characterized in that: The processing of the appearance image of the used power battery pack in S2 includes: performing denoising and image enhancement processing on the appearance image, performing data fusion on the processed appearance image, and then inputting the fused appearance image into a neural network model for detection to obtain the degree of appearance defects of the used power battery pack.

9. A method for tiered sorting of waste power battery packs according to claim 7, characterized in that: The processing of the weight of the used power battery pack in S2 includes: obtaining weight change data of the used power battery pack by comparing the weight of the used power battery pack with a preset weight of the power battery pack.

10. A method for sorting waste power battery packs according to claim 7, characterized in that: The processing of the escaped gas of the waste power battery pack in S2 includes: obtaining the proportion of harmful components in the escaped gas of the waste power battery pack by comparing the escaped gas of the waste power battery pack with the escaped gas of a preset power battery pack.

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