Environment-friendly lead-acid storage battery sample pretreatment and selection integrated method and system

Through physical cleaning and integrated design, the problems of chemical pollution and resource waste in traditional lead-acid battery testing have been solved, achieving environmentally friendly and efficient sample pretreatment and selection, and improving testing efficiency and resource utilization.

CN120970731APending Publication Date: 2025-11-18TIANNENG BATTERY GRP (JIANGXI) CO LTD
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Patent Information

Application Number
CN202511284696.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-10
Publication Date
2025-11-18

AI Technical Summary

Technical Problem

Traditional lead-acid battery sample pretreatment and selection processes suffer from problems such as chemical reagent contamination, resource waste, cumbersome procedures, and low efficiency.

Method used

Physical cleaning is used instead of chemical cleaning, combined with high-voltage electrostatic dust removal and ultrasonic cleaning to remove dust and clean the battery surface; electrolyte is collected and recycled through non-destructive drilling technology; battery components are mechanically disassembled and sorted for testing, and materials are recycled using intelligent sorting equipment; an integrated design combines pretreatment, disassembly, testing and recycling processes.

Benefits of technology

It reduces the use and emissions of chemical reagents, achieves environmentally friendly treatment, improves resource recycling rate, reduces production costs, and enhances detection efficiency and accuracy, which is in line with the concept of sustainable development.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to the technical field of lead-acid storage battery detection, and discloses an environment-friendly lead-acid storage battery sample pretreatment and selection integrated method, which comprises the following steps: S1, collection and conveying, S2, physical cleaning pretreatment, S3, electrolyte collection and treatment, S4, battery disassembly and material classification, S5, performance detection and selection, and S6, recovery treatment. Chemical cleaning is replaced by physical cleaning, so that use and discharge of chemical reagents are reduced; the electrolyte is recycled and reused, so that waste liquid pollution is reduced; disqualified parts and waste are subjected to harmless treatment, pollution to the environment is effectively avoided, disassembled battery parts are classified and recycled, recyclable lead polar plates, plastic shells and the like are recycled, the utilization rate of resources is increased, integrated design is adopted, manual operation and time waste of intermediate links are reduced, and the production cost is reduced. And the sample processing and selecting efficiency is improved.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lead-acid battery detection, in particular to an environment-friendly lead-acid battery sample pretreatment and selection integrated method and system. BACKGROUND

[0002] Lead-acid battery detection is a key step to evaluate its current state, health condition and remaining life, whether it is for automotive start-stop, electric vehicles, uninterruptible power supply (UPS), solar energy storage or other applications. Regular detection can prevent failures, plan replacements and ensure reliable operation of equipment.

[0003] In the quality detection process of lead-acid batteries, sample pretreatment and selection are important basic links.

[0004] There are many problems in the traditional lead-acid battery sample pretreatment and selection process:

[0005] 1. Chemical reagents are often used to clean the surface of the battery in the pretreatment stage. These chemical reagents are directly discharged after use, which not only causes water pollution, but also increases the detection cost due to the consumption of a large amount of chemical reagents;

[0006] 2. In the selection process, there is a lack of reasonable recycling and processing mechanism for unqualified batteries, which are randomly stacked or simply disassembled, leading to leakage of harmful substances such as lead and sulfuric acid, causing serious pollution to soil and water sources; at the same time, the recyclable materials in unqualified batteries are not effectively recycled, resulting in waste of resources;

[0007] 3. In the traditional method, the pretreatment and selection links are independent of each other, the process is complicated and the efficiency is low, which cannot meet the modern efficient and environmentally friendly production and detection requirements.

[0008] Therefore, we need to propose an environment-friendly lead-acid battery sample pretreatment and selection integrated method and system to realize environmental protection, resource recycling and improve detection efficiency. SUMMARY

[0009] The present application aims to provide an environment-friendly lead-acid battery sample pretreatment and selection integrated method and system, which replaces chemical cleaning with physical cleaning, reduces the use and discharge of chemical reagents, recycles and reuses electrolyte, reduces waste liquid pollution, harmlessly disposes unqualified parts and waste, effectively avoids the pollution of harmful substances such as lead and sulfuric acid to the environment, realizes the environmental protection of the whole pretreatment and selection process, classifies and recycles the recycled lead plates and plastic shells, improves the resource utilization rate, reduces the production cost, and meets the concept of sustainable development, adopts integrated design to combine pretreatment, disassembly, detection, selection and recycling, reduces the manual operation and time waste of intermediate links, improves the sample processing and selection efficiency, and can meet the demand of large-scale production detection to solve the problems in the above background technology.

[0010] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an environment-friendly lead-acid battery sample pretreatment and selection integrated method, comprising the following steps:

[0011] S1, collecting and conveying: collecting and conveying the lead-acid battery sample to be detected to the pretreatment area through an automatic conveying device;

[0012] S2, physical cleaning pretreatment: removing the dust and impurities on the surface of the battery by using a high-voltage electrostatic dust removal equipment, and removing stubborn stains on the surface of the battery without adding chemical cleaning agent by using an ultrasonic cleaning equipment;

[0013] S3, electrolyte collection and treatment: opening a small hole near the battery pole of the battery shell by using a non-destructive hole opening technology, extracting and collecting the electrolyte in the battery by using a negative pressure extraction device, and analyzing the composition of the collected electrolyte;

[0014] S4, battery disassembly and material classification: disassembling the pretreated battery parts, which include the plates, the shell, and the separator, by using a machine;

[0015] S5, performance detection and selection: detecting the performance of the disassembled battery parts respectively, analyzing the detection results, and screening out unqualified battery parts into the recycling process;

[0016] S6, recycling treatment: recycling the recyclable materials in the selected unqualified battery parts.

[0017] Preferably, in step S1, the automatic conveying device selects a mechanical arm with a positioning structure and a buffer structure, the positioning structure is used for accurately grabbing the battery, and the buffer structure is used for protecting the battery from being damaged during grabbing.

[0018] Preferably, the automatic conveying device comprises a rotating column arranged in rotation, the top of the rotating column is connected with a rotating plate, the lower part of both ends of the rotating plate is provided with a gas cylinder, the positioning structure is connected to the piston end of the gas cylinder, and the buffer structure is installed on the positioning structure.

[0019] Preferably, the positioning structure comprises a cross plate connected to the piston end of the gas cylinder, the bottom of the cross plate is provided with two groups of electric sliding tables arranged vertically, two mounting frames moving towards each other are installed on the sliding seat of each group of electric sliding tables, and clamping plates are installed on the opposite sides of the two mounting frames.

[0020] The buffer structure comprises rubber ridges installed on the surface of the clamping plate.

[0021] Preferably, in step S2, the ultrasonic cleaning device comprises an ultrasonic cleaning tank, the inside of the ultrasonic cleaning tank is provided with a circulating water system, the circulating water system is provided with a water treatment structure for filtering and purifying cleaning water, and the repeated use of clean water is realized.

[0022] Preferably, in step S3, after analysis of the collected electrolyte components, for electrolyte with high concentration and few impurities, purification is carried out through distillation and filtration, so as to realize the repeated use of electrolyte; for electrolyte with low concentration and many impurities, after removal of heavy metal impurities in the electrolyte by using a chemical precipitation method, neutralization treatment is carried out, so that the electrolyte meets the discharge standard.

[0023] Preferably, in step S4, after the battery is disassembled, an intelligent sorting device is used to classify the plates, shells and separators in the battery through image recognition technology and material detection technology, and the plates, shells and separators are collected and stored respectively.

[0024] In step S5, the performance detection of the plates comprises active material content detection, plate thickness detection and conductivity test of the plates; and the performance detection of the shells comprises strength detection and sealing property detection.

[0025] After detection, the detection results are analyzed according to the preset quality standard, and the qualified battery components are used for subsequent research or quality evaluation.

[0026] Preferably, in step S6, for unqualified plates, lead is recovered by using pyrometallurgy or hydrometallurgy; for unqualified shells, the shells are regenerated and utilized through the processes of crushing, melting and granulation; and waste residues and waste liquid generated in the recycling process are harmlessly treated.

[0027] The application also provides an environment-friendly lead-acid battery sample pretreatment and selection integrated system based on the above-described environment-friendly lead-acid battery sample pretreatment and selection integrated method.

[0028] Collecting and conveying module: composed of automatic conveying devices, used for collecting lead-acid battery samples to be detected and conveying them to a pretreatment area to realize automatic transmission of the samples;

[0029] Physical cleaning module: containing high-voltage electrostatic dust removal equipment and ultrasonic cleaning equipment, as well as a matching circulating water system, to complete dust removal and cleaning work on the surface of the battery;

[0030] Electrolyte processing module: including non-destructive hole opening devices, negative pressure extraction devices, electrolyte composition analysis instruments, electrolyte purification equipment and neutralization treatment equipment, to realize collection, analysis, processing and recycling of the electrolyte;

[0031] Performance detection module: equipped with various detection instruments, including active material content detection instruments, thickness measurement instruments and conductivity testers, to detect the performance of the battery components;

[0032] Recycling and processing module: including pyrometallurgical equipment, hydrometallurgical equipment, plastic regeneration equipment and waste residue and waste liquid harmless treatment equipment, to recycle and harmlessly dispose of unqualified components and waste.

[0033] Compared with the prior art, the present application has the following advantages:

[0034] 1. The present application replaces chemical cleaning with physical cleaning, reduces the use and discharge of chemical reagents, recycles and reuses the electrolyte, reduces waste liquid pollution, harmlessly disposes of unqualified components and waste, effectively avoids pollution of the environment by harmful substances such as lead and sulfuric acid, and realizes environmental protection in the entire pretreatment and selection process;

[0035] 2. The present application classifies and recycles the disassembled battery components, regenerates and reuses recyclable lead plates and plastic casings, improves the utilization rate of resources, reduces production costs, and conforms to the concept of sustainable development;

[0036] 3. The present application adopts an integrated design, combining pretreatment, disassembly, detection, selection and recycling, reducing manual operation and time waste in intermediate links, improving the efficiency of sample processing and selection, and meeting the needs of large-scale production and detection;

[0037] 4. The present application can more accurately select qualified samples through comprehensive performance detection of the battery components, improving the accuracy and reliability of the detection results and providing a strong guarantee for quality evaluation of lead-acid batteries. BRIEF DESCRIPTION OF DRAWINGS

[0038] Fig. 1 The flowchart of the present application;

[0039] Fig. 2The automatic conveying device of the present application is shown in the structural diagram.

[0040] In the figure: 1, rotating column; 2, rotating plate; 3, air cylinder; 41, cross plate; 42, electric sliding table; 43, mounting frame; 44, clamping plate; 45, rubber convex strip. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0042] Please refer to Figs. 1-2 The present application provides a technical solution: an environment-friendly lead-acid battery sample pretreatment and selection integrated method, comprising the following steps:

[0043] S1, collecting and conveying: collecting and conveying the lead-acid battery sample to be detected to the pretreatment area by the automatic conveying device;

[0044] In step S1, the automatic conveying device selects a mechanical arm with a positioning structure and a buffer structure, the positioning structure is used for accurately grabbing the battery, and the buffer structure is used for protecting the battery from being damaged during grabbing.

[0045] The automatic conveying device comprises a rotating column 1 arranged in rotation, the top of the rotating column 1 is connected with a rotating plate 2, the lower part of both ends of the rotating plate 2 is installed with an air cylinder 3, the positioning structure is connected to the piston end of the air cylinder 3, and the buffer structure is installed on the positioning structure.

[0046] The positioning structure comprises a cross plate 41 connected to the piston end of the air cylinder 3, the bottom of the cross plate 41 is installed with two groups of electric sliding tables 42 arranged vertically, two mounting frames 43 moving towards each other are installed on the sliding seat of each group of electric sliding tables 42, and clamping plates 44 are installed on the opposite sides of the two mounting frames 43; the buffer structure comprises rubber convex strips 45 installed on the surface of the clamping plate 44.

[0047] The rotating column 1 rotates to drive the rotating plate 2 to rotate (180°), moves the positioning structure above the battery to be detected, operates the air cylinder 3 to drive the positioning structure to move downward, then operates the two electric sliding tables 42 to drive the two mounting frames 43 and the clamping plates 44 thereon to move towards each other, until the four clamping plates 44 are clamped on the four sides of the battery respectively, and the rubber convex strips 45 abut against the sides of the battery, which not only increases the friction with the sides of the battery to make the clamping more stable, but also prevents the battery from being damaged due to excessive clamping force.

[0048] S2, physical cleaning pretreatment: high-voltage electrostatic dust removal equipment is used to remove floating dust and impurities on the surface of the battery, and an ultrasonic cleaning device is used to remove stubborn stains on the surface of the battery without adding chemical cleaning agents;

[0049] To create a clean environment for subsequent non-destructive drilling, disassembly and detection, and to avoid cross contamination.

[0050] In step S2, the ultrasonic cleaning device includes an ultrasonic cleaning tank, the inside of the ultrasonic cleaning tank is provided with a circulating water system, the circulating water system is provided with a water treatment structure for filtering and purifying the cleaning water, and the reuse of clean water is realized.

[0051] Optionally, the high-voltage electrostatic dust removal equipment uses a high-efficiency corona discharge unit to generate a strong electrostatic field force to adsorb nanoscale dust, the surface of the ionizing needle is coated with a platinum gold layer, and the dust collecting plate is provided with an automatic dust scraping or vibration dust removal device. High dust removal efficiency.

[0052] Deionized water or ultrapure water is selected for cleaning water, and the cleaning water can be preheated to 40-60℃ before cleaning for removing stubborn stains;

[0053] The water treatment structure includes multi-stage filtration (pre-coarse filtration, bag filtration, activated carbon adsorption), RO reverse osmosis or UV photocatalytic oxidation deep purification unit, and the ultrasonic cleaning device also includes a conductivity meter for real-time monitoring of water quality.

[0054] S3, electrolyte collection and treatment: a small hole is made near the battery pole column of the battery shell through non-destructive drilling technology, the electrolyte inside the battery is extracted and collected by using a negative pressure extraction device, and the collected electrolyte is analyzed for composition;

[0055] Non-destructive drilling to obtain electrolyte can realize safe and leak-free extraction of electrolyte, effective recovery or environmental disposal, and prevention of dilute sulfuric acid pollution and heavy metal diffusion.

[0056] When negative pressure extraction is performed, the suction nozzle in the negative pressure extraction device enters the small hole and is sealed with the small hole, a corrosion-resistant vacuum pump is used in cooperation with a vacuum buffer tank and a PID regulator to accurately control the negative pressure value, and a liquid level sensor is configured to determine the vacuum state.

[0057] When analyzing the composition of the electrolyte, ICP-OES is used to analyze the content of metal impurities such as Pb, Sb, As and Fe, and potentiometric titration is used to determine the concentration of sulfuric acid.

[0058] In step S3, after analyzing the collected electrolyte components, for electrolyte with high concentration and few impurities, purification is carried out by distillation and filtration to realize the reuse of electrolyte; for electrolyte with low concentration and many impurities, after removing heavy metal impurities in the electrolyte by chemical precipitation method, neutralization treatment is carried out to make the electrolyte meet the discharge standard.

[0059] When removing heavy metal impurities: sodium carbonate or calcium hydroxide is added to the electrolyte to generate lead carbonate, lead sulfate and other precipitates in the stirring reaction kettle, and the precipitate (lead mud) is recovered using a plate and frame filter or a centrifuge.

[0060] During neutralization treatment: the supernatant is adjusted to neutral (PH) by adding sodium hydroxide or calcium hydroxide.

[0061] S4, battery disassembly and material classification: the pre-processed battery components including the electrode plate, the shell, and the separator are mechanically disassembled;

[0062] In step S4, after the battery is disassembled, the intelligent sorting equipment is used to classify the electrode plate, the shell, and the separator in the battery by image recognition technology and material detection technology, and they are collected and stored respectively;

[0063] The image recognition technology includes: high-resolution industrial cameras to collect shape, texture, and color information of the battery components; near-infrared spectrum to accurately identify polymer types (PP / ABS shell, PE / PP separator); X-ray fluorescence to analyze the elemental composition of metal battery components in real time.

[0064] Then the model is trained by massive image and spectrum data to adapt to the complex material composition of batteries from different manufacturers and models.

[0065] The intelligent sorting equipment includes but is not limited to: high-pressure air nozzles, mechanical rods, and multi-axis sorting mechanical arms to put the electrode plate, plastic shell, separator, and sealing and metal parts of the battery into designated collection boxes.

[0066] S5, performance detection and selection: the disassembled battery components are respectively subjected to performance detection, and according to the detection results, unqualified battery components are screened out to enter the recycling process;

[0067] In step S5, the performance detection of the electrode plate includes: active material content detection of the electrode plate (thermogravimetric analyzer), electrode plate thickness detection (non-contact laser thickness gauge), and conductivity test of the electrode plate (four-probe resistivity tester); the performance detection of the shell includes strength detection (tensile / bending / impact strength test) and sealing property detection (airtightness test).

[0068] After detection, according to the preset quality standard, the detection results are analyzed, and the qualified battery components are used for subsequent research or quality evaluation.

[0069] Pre-set quality standards: such as thickness tolerance ± 0.05mm, active substance content >75% of the nominal value, resistivity change <10% and the like.

[0070] S6, recycling treatment: recycling treatment is carried out on the recyclable materials in the selected unqualified battery parts.

[0071] In step S6, for the unqualified plate, lead recovery is carried out by pyrometallurgy or hydrometallurgy; for the unqualified shell, recycling is carried out by crushing, melting and granulating process; the waste residue and waste liquid generated in the recycling process are harmless treated.

[0072] The recycling process of the plastic shell is as follows:

[0073] Crushing and cleaning: strong crusher into particles → hot washing / friction washing → hydrocyclone separation (remove density difference impurities) → strong dehydration → fluidized bed drying;

[0074] Modified granulation: add toughening agent, antioxidant and compatibilizer in the double screw extruder to improve the performance of the recycled material and meet the specific application standard.

[0075] The specific process of the pretreatment and selection of the lead-acid battery of the application is as follows:

[0076] I. Collection and transportation: 100 lead-acid batteries to be detected produced on the same day are placed in the designated area, the mechanical arm (positioning structure) of the automatic conveying device follows the preset program to grab the batteries one by one and convey them smoothly to the ultrasonic cleaning equipment beside the pretreatment area;

[0077] II. Physical cleaning pretreatment: first start the high-voltage electrostatic dust removal equipment to remove dust on the surface of the battery; then put the battery into the ultrasonic cleaning tank, the circulating water in the cleaning tank removes stubborn stains such as oil stains on the surface of the battery under the action of ultrasonic waves, the cleaning process lasts for 5 minutes, and after the cleaning is completed, the battery is automatically conveyed to the draining area;

[0078] III. Electrolyte collection and treatment: a small hole is opened near the battery pole by using a non-destructive hole opening device, and a negative pressure extraction device extracts the electrolyte in the battery and collects it into an electrolyte storage tank;

[0079] The electrolyte in the storage tank is analyzed, and the electrolyte with less impurities is purified by distillation equipment, and the purified electrolyte can be reused for production; the electrolyte with more impurities is treated by removing heavy metal impurities and then neutralized and discharged;

[0080] IV. Battery disassembly: after pretreatment and extraction of electrolyte, the battery is disassembled, the plastic shell and the plate in the battery are classified and collected, and the shell and the plate are respectively subjected to performance detection, and the qualified performance is reserved, and the unqualified performance is subjected to recycling treatment process;

[0081] V. Recycling treatment: recycling treatment is performed on the shell and the plate, lead in the plate is recycled, plastic in the shell is reused, and tea dregs and waste liquid generated by harmless treatment are generated.

[0082] The application also provides an environment-friendly lead-acid battery sample pretreatment and selection integrated system based on the above-described environment-friendly lead-acid battery sample pretreatment and selection integrated method, which comprises the following steps:

[0083] The collection and conveying module is composed of an automatic conveying device and is used for collecting the lead-acid battery samples to be detected and conveying the samples to the pretreatment area to realize automatic transmission of the samples.

[0084] The physical cleaning module comprises high-voltage electrostatic dust removal equipment, ultrasonic cleaning equipment and a matching circulating water system, and completes dust removal and cleaning of the surface of the battery.

[0085] The electrolyte treatment module comprises a non-destructive hole opening device, a negative pressure extraction device, an electrolyte composition analysis instrument, an electrolyte purification device and a neutralization treatment device, and realizes collection, analysis, treatment and recycling of the electrolyte.

[0086] The performance detection module is equipped with various detection instruments, and the detection instruments comprise an active material content detection instrument, a thickness measuring instrument and a conductivity tester, and the performance of the battery components is detected.

[0087] The recycling treatment module comprises pyrometallurgical equipment, hydrometallurgical equipment, plastic regeneration equipment and waste residue and waste liquid harmless treatment equipment, and the unqualified components and waste are subjected to recycling treatment and harmless disposal.

[0088] In summary, the application solves the problems of serious environmental pollution, resource waste and low detection efficiency in the traditional method, realizes environmental protection, resource recycling and efficient detection of the lead-acid battery sample pretreatment and selection process through integrated design.

[0089] Although the embodiments of the application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the application, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. An integrated method for pretreatment and selection of environmentally friendly lead-acid battery samples, characterized in that, Includes the following steps: S1. Collection and Transportation: The lead-acid battery samples to be tested are collected and transported to the pretreatment area by an automatic conveying device; S2. Physical cleaning pretreatment: High-voltage electrostatic dust removal equipment is used to remove floating dust and impurities from the battery surface, and ultrasonic cleaning equipment is used to remove stubborn stains from the battery surface without adding chemical cleaning agents. S3. Electrolyte collection and treatment: Using non-destructive drilling technology, tiny holes are made in the battery casing near the battery terminals. The electrolyte inside the battery is extracted and collected using a negative pressure extraction device, and then the collected electrolyte is analyzed for its composition. S4. Battery Disassembly and Material Classification: Mechanical disassembly of pre-treated battery components, including plates, casing, and separators. S5. Performance Testing and Selection: The performance of each of the disassembled battery components is tested, and the test results are analyzed to screen out unqualified battery components for recycling. S6. Recycling: Recycle the recyclable materials from the selected non-conforming battery components.

2. The integrated method for pretreatment and selection of environmentally friendly lead-acid battery samples according to claim 1, characterized in that: In step S1, the automatic conveying device uses a robotic arm with a positioning structure and a buffer structure. The positioning structure is used to accurately grasp the battery, and the buffer structure is used to protect the battery from damage during grasping.

3. The integrated method for pretreatment and selection of environmentally friendly lead-acid battery samples according to claim 2, characterized in that: The automatic conveying device includes a rotating column (1) that is rotatably mounted. A rotating plate (2) is connected to the top of the rotating column (1). Cylinders (3) are installed at the lower ends of both ends of the rotating plate (2). The positioning structure is connected to the piston end of the cylinder (3). The buffer structure is installed on the positioning structure.

4. The integrated method for pretreatment and selection of environmentally friendly lead-acid battery samples according to claim 3, characterized in that: The positioning structure includes a cross plate (41) connected to the piston end of the cylinder (3). Two sets of electric slides (42) are vertically arranged at the bottom of the cross plate (41). Two opposing mounting brackets (43) are installed on the slide of each set of electric slides (42). Clamping plates (44) are installed on the opposite side of the two mounting brackets (43). The buffer structure includes rubber protrusions (45) mounted on the surface of the clamping plate (44).

5. The integrated method for pretreatment and selection of environmentally friendly lead-acid battery samples according to claim 1, characterized in that: In step S2, the ultrasonic cleaning equipment includes an ultrasonic cleaning tank, the interior of which is equipped with a circulating water system. The circulating water system is equipped with a water treatment structure for filtering and purifying the cleaning water, so as to realize the reuse of the clean water.

6. The integrated method for pretreatment and selection of environmentally friendly lead-acid battery samples according to claim 1, characterized in that: In step S3, after analyzing the components of the collected electrolyte, for electrolytes with high concentration and few impurities, purification is carried out by distillation and filtration to achieve reuse of the electrolyte; for electrolytes with low concentration and many impurities, heavy metal impurities in the electrolyte are removed by chemical precipitation and then neutralized to make the electrolyte meet the discharge standards.

7. The integrated method for pretreatment and selection of environmentally friendly lead-acid battery samples according to claim 1, characterized in that: In step S4, after the battery is disassembled, an intelligent sorting device is used to classify the plates, casing and separators in the battery through image recognition technology and material detection technology, and collect and store them separately. In step S5, the performance testing of the electrode plate includes: testing the active material content of the electrode plate, testing the electrode plate thickness, and testing the conductivity of the electrode plate; the performance testing of the outer casing includes strength testing and sealing testing. After testing, the test results are analyzed according to the preset quality standards, and qualified battery components are used for subsequent research or quality assessment.

8. The integrated method for pretreatment and selection of environmentally friendly lead-acid battery samples according to claim 1, characterized in that: In step S6, lead is recovered from unqualified plates using pyrometallurgical or hydrometallurgical methods; unqualified shells are recycled through crushing, melting, and granulation processes; and waste residue and waste liquid generated during the recycling process are treated to render them harmless.

9. An integrated system for pretreatment and selection of environmentally friendly lead-acid battery samples, based on the integrated method for pretreatment and selection of environmentally friendly lead-acid battery samples according to any one of claims 1-8, characterized in that, include: Collection and conveying module: Composed of an automatic conveying device, used to collect lead-acid battery samples to be tested and convey them to the pretreatment area, realizing automated sample transfer; Physical cleaning module: includes high-voltage electrostatic dust removal equipment and ultrasonic cleaning equipment, as well as a supporting circulating water system, to complete the dust removal and cleaning of the battery surface; Electrolyte processing module: includes non-destructive drilling device, negative pressure extraction device, electrolyte component analysis instrument, electrolyte purification equipment and neutralization treatment equipment, to realize the collection, analysis, treatment and recycling of electrolyte; Performance testing module: Equipped with a variety of testing instruments, including an active material content analyzer, a thickness measuring instrument, and a conductivity tester, to perform performance testing on battery components; Recycling and processing module: Includes pyrometallurgical equipment, hydrometallurgical equipment, plastic recycling equipment, and waste residue and waste liquid harmless treatment equipment, which recycles and harmlessly disposes of unqualified parts and waste.