Retired lithium battery recycling method, system, computer device and storage medium

Abstract

Embodiments of the present application disclose a retired lithium battery recycling method and system, a computer device and a storage medium. The health state, capacity attenuation rate, internal resistance and cycle stability of the target retired lithium battery are detected in the screening module to determine whether to recycle or eliminate. If recycling, the pre-treatment module is used for hierarchical pre-treatment according to the recycling level. The differential matching module is used for multiplexing scene adaptation to obtain a multiplexing scene matched with the target lithium battery. The regeneration module is used for personalized differential recycling processing according to the multiplexing scene to obtain a new battery that can be reused in the multiplexing scene. In the present application, unlike the existing sorting method that only relies on rough information such as battery pack model appearance, the real health state and residual capacity of the internal battery cell are obtained, the differential pre-treatment is accurately screened and graded, the utilization rate is improved, and the technical problem of poor recycling effect of retired lithium battery recycling is solved.

Description

Technical Field

[0001] This application relates to the field of battery management technology, and in particular to methods, systems, computer equipment and storage media for recycling retired lithium batteries. Background Technology

[0002] With the booming development of new energy vehicles and energy storage industries, there has been an explosive increase in retired lithium batteries, growing at a rate of over 30% annually. Retired lithium batteries contain a large amount of valuable metals such as lithium, cobalt, nickel, copper, and aluminum, and their cells still retain some remaining capacity, making them highly valuable for recycling. Recycling retired lithium batteries can not only alleviate the pressure of mineral resource shortages and reduce the new energy industry's dependence on primary minerals, but also reduce environmental pollution caused by the indiscriminate disposal of waste batteries, such as electrolyte leakage and heavy metal pollution. It is a key link in achieving resource recycling and green development.

[0003] However, the current retired lithium battery recycling industry is still in a stage of extensive development. Existing methods for recycling retired lithium batteries rely solely on rough information such as the battery pack's model, brand, or appearance for sorting, failing to ascertain the true health status and residual capacity of the internal cells, or their internal resistance and defects. This leads to high risks in secondary use, the mixing of inferior cells, and consequently, poor performance, short lifespan, and significant safety hazards in the reconstituted battery packs. Furthermore, the recycling value is low. Mixing cells with different chemical compositions and health conditions increases the difficulty and cost of downstream separation and purification, reduces the recovery rate and purity of valuable metals, and the mixing of inferior cells poses safety hazards and causes serious environmental pollution. Therefore, existing technologies suffer from the technical problem of ineffective recycling of retired lithium batteries. Summary of the Invention

[0004] This application provides a method, system, computer equipment, and storage medium for recycling retired lithium batteries, which can solve the technical problem of poor recycling effect of retired lithium batteries.

[0005] In a first aspect, embodiments of this application provide a method for recycling retired lithium batteries. This method is applied to a retired lithium battery recycling system, which includes a screening module, a pretreatment module, a differential matching module, and a regeneration module. The method includes:

[0006] In response to a recycling instruction to recycle a target retired lithium battery, the detection unit in the screening module detects the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery to determine whether to recycle or discard it. The target retired lithium battery determined to be recycled has a corresponding recycling level.

[0007] If it is determined that the target retired lithium battery will be recycled, then the pretreatment module will perform graded pretreatment according to the matching recycling level.

[0008] The differentiated matching module is used to adapt the target retired lithium battery after graded preprocessing to a reuse scenario, thereby obtaining a reuse scenario that matches the target retired lithium battery.

[0009] The regeneration module performs personalized recycling of the target retired lithium batteries after graded pretreatment according to the reuse scenario, resulting in new batteries that can be reused in the reuse scenario.

[0010] In some embodiments, in response to a recycling command to recycle a target retired lithium battery, the detection unit in the screening module detects the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery to determine whether to recycle or discard it, including:

[0011] In response to a recycling instruction to recycle a target retired lithium battery, the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery are detected by the detection unit in the screening module to obtain the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery.

[0012] If at least one of the following conditions is met: the health status is less than a preset health status threshold, the capacity decay rate exceeds a preset capacity decay rate threshold, the internal resistance exceeds a preset internal resistance threshold, or the cycle stability is unqualified, then the target retired lithium battery is determined to be eliminated.

[0013] If the health status is not less than the health status threshold, the capacity decay rate does not exceed the capacity decay rate threshold, the internal resistance does not exceed the internal resistance threshold, and the cycle stability is qualified, then it is determined that the target retired lithium battery will be recycled.

[0014] If it is determined that the target retired lithium battery will be recycled, the corresponding recycling level of the target retired lithium battery will be determined based on the health status, the capacity decay rate, the internal resistance, and the cycle stability.

[0015] In some embodiments, the recycling grades include a healthy grade, a medium grade, and an inefficient grade. If it is determined that the target retired lithium battery will be recycled, the corresponding recycling grade of the target retired lithium battery is determined based on the health status, the capacity decay rate, the internal resistance, and the cycle stability, including:

[0016] If it is determined that the target retired lithium battery will be recycled, the corresponding recycling level of the target retired lithium battery whose health status exceeds a preset first health status threshold, whose capacity decay rate does not exceed a preset first capacity decay threshold, and whose internal resistance does not exceed a preset first internal resistance threshold is determined as the health level.

[0017] The recycling grade of a target retired lithium battery is determined to be medium, wherein the health status is within a preset second health status threshold range, the capacity decay rate is within a preset second capacity decay threshold range, and the internal resistance is within a preset second internal resistance threshold range. The value within the second health status threshold range is less than the first health status threshold, the value within the second capacity decay threshold range is greater than the first capacity decay threshold, and the value within the second internal resistance threshold range is greater than the first internal resistance threshold.

[0018] The recycling grade of a target retired lithium battery is determined to be the low-efficiency grade, where the health status is within a preset third health status threshold range, the capacity decay rate is within a preset third capacity decay threshold range, and the internal resistance is within a preset third internal resistance threshold range. The values ​​within the third health status threshold range are less than the values ​​within the second health status threshold range, the values ​​within the third capacity decay threshold range are greater than the values ​​within the second capacity decay threshold range, and the values ​​within the third internal resistance threshold range are greater than the values ​​within the second internal resistance threshold range.

[0019] In some embodiments, if it is determined that the target retired lithium battery will be recycled, then the pretreatment module performs graded pretreatment according to the matching recycling level, including:

[0020] If it is determined that the target retired lithium battery will be recycled, the target retired lithium battery with the recycling level of the health grade will be processed by the pre-processing module through basic pre-processing steps, wherein the basic pre-processing steps include non-destructive disassembly sub-step, cleaning sub-step, full parameter re-inspection sub-step, and connector replacement sub-step.

[0021] The pretreatment module first performs the basic pretreatment steps on the target retired lithium battery with the recycling grade of medium, and then performs charge and discharge activation treatment on the target retired lithium battery to repair capacity decay and match the difference fluctuation.

[0022] The pretreatment module first performs the basic pretreatment steps on the target retired lithium batteries with the recycling level of inefficiency, then performs pulse repair treatment to repair internal resistance and multiple charge-discharge activation treatment to repair capacity decay, and finally processes them in groups.

[0023] In some embodiments, the step of performing personalized and differentiated recycling of the target retired lithium batteries after graded pretreatment through the regeneration module according to the reuse scenario to obtain new batteries that can be reused in the reuse scenario includes:

[0024] According to the first reuse scenario corresponding to the health status, the whole cell of the target retired lithium battery in the health status is retained by the regeneration module, and the complete cell body is preserved. Only the aging accessories in the target retired lithium battery in the health status are removed.

[0025] According to the second reuse scenario corresponding to the medium grade, the whole cells of the target retired lithium battery of the medium grade are screened and matched by the regeneration module. The performance of the cells in the same group is matched, and the recycling level of the cells in the same group can include the healthy grade or the medium grade, but does not include the inefficient grade.

[0026] According to the third reuse scenario corresponding to the low efficiency level, the target retired lithium batteries in the low efficiency level are grouped by the regeneration module. The recycling level of cells in the same group is the low efficiency level, excluding other recycling levels.

[0027] In some embodiments, after the detection unit in the screening module detects the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery in response to a recycling command for recycling the target retired lithium battery, and determines whether the target retired lithium battery should be recycled or discarded, the process includes:

[0028] If it is determined that the target retired lithium battery should be eliminated, the target retired lithium battery shall be subjected to harmless pretreatment through the pretreatment module;

[0029] The regeneration module is used to purify retired lithium batteries after they have undergone harmless pretreatment, and to extract valuable metal elements from them.

[0030] If the extracted valuable metals include nickel, cobalt, and manganese, the extracted valuable metal elements are regenerated into ternary cathode materials through the regeneration module for the production of new battery cells based on the ternary cathode materials.

[0031] If the extracted valuable metals include iron, the extracted lithium element is recycled into a positive electrode material through the regeneration module for the production of new battery cells, and the extracted iron and phosphorus elements are used to produce chemical additives.

[0032] In some embodiments, after the detection unit in the screening module detects the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery in response to a recycling command for recycling the target retired lithium battery, and determines whether the target retired lithium battery should be recycled or discarded, the process includes:

[0033] If it is determined that the target retired lithium battery will be recycled, the auxiliary components to be recycled in the target retired lithium battery will be determined, wherein the auxiliary components include metal components, circuit components and structural components;

[0034] After disassembling the metal components, insulating impurities are removed, and the components are recycled into new lithium battery tabs, shell raw materials, or industrial metal products.

[0035] The circuit components are inspected, screened, and regenerated. The intact components that are inspected and screened are impurity removed, performance calibrated, and refurbished for reuse. The damaged components that are inspected and screened are disassembled and their electronic components are extracted.

[0036] The structural components are classified and disassembled, wherein the aged and brittle plastic parts are removed, the metal parts are purified, and the plastic parts and the metal parts are recycled into battery pack auxiliary materials respectively.

[0037] Secondly, embodiments of this application also provide a retired lithium battery recycling system, which includes a screening module, a pretreatment module, a differential matching module, and a regeneration module.

[0038] The screening module is used to respond to the recycling command for recycling the target retired lithium battery. The detection unit detects the health status, capacity decay rate, internal resistance and cycle stability of the target retired lithium battery to determine whether the target retired lithium battery should be recycled or discarded. The target retired lithium battery determined to be recycled has a corresponding recycling level.

[0039] A pretreatment module is used to perform graded pretreatment according to the matching recycling level if it is determined that the target retired lithium battery will be recycled.

[0040] The differentiated matching module is used to adapt the target retired lithium battery after graded preprocessing to a reuse scenario to obtain a reuse scenario that matches the target retired lithium battery.

[0041] The recycling module is used to perform personalized recycling of the target retired lithium batteries after graded pretreatment according to the reuse scenario, so as to obtain new batteries that can be reused in the reuse scenario.

[0042] Thirdly, this application also provides a computer device for recycling retired lithium batteries, which includes a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the above-mentioned method.

[0043] Fourthly, embodiments of this application also provide a computer-readable storage medium storing a computer program, the computer program including program instructions that, when executed by a processor, can implement the above-described method.

[0044] This application provides a method, system, computer equipment, and storage medium for recycling retired lithium batteries. The method is applied to a retired lithium battery recycling system, which includes a screening module, a pretreatment module, a differential matching module, and a regeneration module. The method includes:

[0045] In response to a recycling instruction for a target retired lithium battery, the detection unit in the screening module detects the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery to determine whether it should be recycled or discarded. The target retired lithium battery determined for recycling corresponds to a specific recycling level. If recycling is determined, the pre-processing module performs graded pre-processing according to the matching recycling level. The differential matching module adapts the graded pre-processed target retired lithium battery to a reuse scenario, obtaining a reuse scenario that matches the target lithium battery. The regeneration module performs personalized differential recycling processing on the graded pre-processed target retired lithium battery according to the reuse scenario, obtaining a new battery that can be reused in the reuse scenario. This application differs from existing methods that rely solely on rough information such as battery pack model and appearance for sorting. It obtains the true health status and residual capacity of the internal cells, and the differential pre-processing accurately screens and grades the batteries, improving the tiered utilization rate and solving the technical problem of poor recycling effect of retired lithium batteries. Attached Figure Description

[0046] The accompanying drawings are provided to more clearly illustrate the technical solutions of the embodiments of this application. The drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 A schematic flowchart illustrating the method for recycling retired lithium batteries provided in this application embodiment;

[0048] Figure 2 A schematic block diagram of a decommissioned lithium battery recycling system provided in an embodiment of this application;

[0049] Figure 3 A schematic block diagram of a computer device provided in an embodiment of this application. Detailed Implementation

[0050] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] It should be noted that any AI models, software tools, or components not belonging to this company appearing in the embodiments of this application are merely illustrative examples and do not represent actual use. The user personal information involved in the embodiments of this application is obtained by an entity authorized (with the knowledge and consent) or fully authorized by all parties through various legal and compliant means. The collection, storage, use, processing, transmission, provision, and disclosure of the information, data, and signals involved all comply with relevant laws and regulations and do not violate public order and good morals.

[0052] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0053] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0054] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0055] With the booming development of new energy vehicles and energy storage industries, there has been an explosive increase in retired lithium batteries, growing at a rate of over 30% annually. Retired lithium batteries contain a large amount of valuable metals such as lithium, cobalt, nickel, copper, and aluminum, and their cells still retain some remaining capacity, making them highly valuable for recycling. Recycling retired lithium batteries can not only alleviate the pressure of mineral resource shortages and reduce the new energy industry's dependence on primary minerals, but also reduce environmental pollution caused by the indiscriminate disposal of waste batteries, such as electrolyte leakage and heavy metal pollution. It is a key link in achieving resource recycling and green development.

[0056] However, the current retired lithium battery recycling industry is still in a stage of extensive development. Existing methods for recycling retired lithium batteries rely solely on rough information such as the battery pack's model, brand, or appearance for sorting, failing to ascertain the true health status and residual capacity of the internal cells, or their internal resistance and defects. This leads to high risks in secondary use, the mixing of inferior cells, and consequently, poor performance, short lifespan, and significant safety hazards in the reconstituted battery packs. Furthermore, the recycling value is low. Mixing cells with different chemical compositions and health conditions increases the difficulty and cost of downstream separation and purification, reduces the recovery rate and purity of valuable metals, and the mixing of inferior cells poses safety hazards and causes serious environmental pollution. Therefore, existing technologies suffer from the technical problem of ineffective recycling of retired lithium batteries.

[0057] This application differs from existing technologies by employing tiered and differentiated pretreatment. Through precise screening and grading, this application's tiered pretreatment, differentiated utilization, and comprehensive environmentally friendly recycling system address the pain points of existing technologies at the source, achieving safe, efficient, resource-based, and value-maximizing recycling of retired lithium batteries.

[0058] The retired lithium battery recycling method provided in this application is applied to a retired lithium battery recycling system, which includes a screening module, a pretreatment module, a differential matching module, and a regeneration module. Figure 1 This is a schematic flowchart of the method for recycling retired lithium batteries provided in an embodiment of this application. Figure 1 As shown, the method includes the following steps S110-S140:

[0059] S110. In response to a recycling instruction to recycle a target retired lithium battery, the detection unit in the screening module detects the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery to determine whether to recycle or discard the target retired lithium battery. The target retired lithium battery determined to be recycled has a corresponding recycling level.

[0060] Retired lithium batteries mainly come from two major areas: power batteries for new energy vehicles and various consumer electronics products. Power batteries for new energy vehicles have large individual capacities, high value, and high concentration, making them the main component of "urban mines" and the primary targets for tiered utilization and recycling. Various consumer electronics products are numerous but dispersed and rapidly iterated. They mainly enter the system through community recycling or through recycling new product sales.

[0061] A large number of high-value retired power batteries have not entered the formal recycling system because informal channels offer higher prices. The standardized recycling rate of power batteries is even less than 25%. These informal channels lack professional testing and environmentally friendly processing capabilities, and the lack of information and unclear condition of the batteries they collect is one of the fundamental reasons why accurate screening and grading cannot be carried out subsequently. Furthermore, the micro-level recycling channels are extremely fragmented and chaotic. The large number of batteries flowing into informal channels not only causes resource waste and safety and environmental hazards, but also directly exacerbates the core problem of inaccurate screening.

[0062] The screening module includes a detection unit, which can be a specific detection device.

[0063] By comprehensively assessing the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium batteries, it is determined whether they should be recycled or disposed of. This four-factor assessment helps prevent the inclusion of inferior cells, which could lead to poor performance and significant safety hazards in the reconstituted battery packs.

[0064] S110, in response to a recycling command to recycle a target retired lithium battery, uses the detection unit in the screening module to detect the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery, determining whether to recycle or discard the target retired lithium battery, including steps S1101-S1104:

[0065] S1101. In response to a recycling instruction to recycle a target retired lithium battery, the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery are detected by the detection unit in the screening module to obtain the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery.

[0066] In retired lithium-ion batteries, State of Health (SOH) refers to the degree of degradation of the battery's current state compared to its brand-new state. It is a core performance indicator for measuring the aging or deterioration of a battery. A brand-new battery has an SOH of almost 100%, while a retired lithium-ion battery typically has an SOH between 60% and 80% or even lower. When the SOH drops to approximately 80%, the battery can no longer meet the stringent range and power requirements of electric vehicles, and is thus retired. Scrapped batteries have extremely low SOH and have essentially lost their usability.

[0067] As an example, the health status of a target retired lithium battery is detected by a detection unit, such as a detection device, within the screening module. One approach is to perform a complete charge-discharge cycle under controlled conditions and directly measure the capacity. This method yields the most accurate results but is extremely time-consuming and costly, making it unsuitable for large-scale rapid screening. Another approach is to utilize features such as open-circuit voltage, electrochemical impedance spectroscopy, and charge-discharge curve segments, combined with a machine learning model, to quickly estimate the state of health (SOH). This second approach is currently the mainstream direction in research and application, aiming to achieve a relatively accurate assessment within minutes or even less. A third approach is to combine historical data from battery usage, such as cycle count, operating conditions, and temperature history recorded by the vehicle's BMS, to build a model that predicts SOH.

[0068] Capacity degradation rate refers to the percentage decrease in a battery's maximum stored electrical energy capacity relative to its initial nominal capacity during use or storage. Its current actual capacity is determined directly by measuring the total amount of electricity discharged by the battery under specified conditions.

[0069] As an example, the capacity decay rate of a target retired lithium battery is detected by a detection unit, such as a detection device, within the screening module. Pre-treatment is performed by placing the battery at a standard temperature, such as 25°C, and conducting 1-2 complete charge-discharge cycles to achieve a stable state. The battery is then charged to 100% full charge using a specified charging regime, such as constant current and constant voltage. At the standard temperature, the battery is continuously discharged at a specified constant current until its voltage drops to the discharge termination voltage. Actual capacity = Discharge current × Discharge time. Capacity decay rate = [(Nominal capacity - Actual capacity) / Nominal capacity] × 100%.

[0070] Internal resistance is one of the core indicators determining whether a battery will be reused or recycled. In some scenarios, its importance even surpasses capacity decay rate. The internal resistance of retired batteries increases significantly and is often inconsistent. This is not only a performance indicator but also a signal of safety risk. When the internal resistance of a battery increases to 1.5 to 2 times its initial value, it is considered to have entered the end of its lifespan and is no longer suitable for demanding primary applications. Increased internal resistance is directly related to the aging mechanism of batteries: electrolyte drying or decomposition, resulting in poor ion conduction channels; and the continuous thickening of the solid electrolyte interface film on the negative electrode surface, hindering lithium-ion transport. This is the main reason for the increase in ohmic internal resistance and charge transfer impedance. Cracks and detachment of electrode materials lead to poor electrical contact with the current collector, resulting in active material failure / poor contact. Corrosion or loosening of connection parts such as tabs and busbars also contributes to additional contact resistance.

[0071] As an example, the DC internal resistance measurement method is used to measure internal resistance, which is the most common and practical method. A short-duration constant DC current pulse, usually 2-10 seconds, is applied to the battery, and the change in battery terminal voltage before and after the current is applied is measured and calculated according to Ohm's law.

[0072] Cycle stability is one of the decisive indicators for whether retired lithium batteries can be safely and economically reused. When retired lithium batteries are recycled and prepared for a second life, such as for energy storage or low-speed vehicles, they maintain their capacity and performance in a slow and steady manner during subsequent charge and discharge cycles.

[0073] As an example, after 5 charge-discharge cycles, the capacity retention rate is achieved as a result of cycle stability.

[0074] S1102. If at least one of the following conditions is met: the health status is less than a preset health status threshold, the capacity decay rate exceeds a preset capacity decay rate threshold, the internal resistance exceeds a preset internal resistance threshold, or the cycle stability is unqualified, then the target retired lithium battery is determined to be eliminated.

[0075] As an example, the health status threshold is 50%, the preset capacity decay rate threshold is 50%, and the preset internal resistance threshold is 250mΩ. If the capacity retention rate is <90% after 5 charge-discharge cycles, the cycle stability is not up to standard.

[0076] Correspondingly, if any one of the following conditions is met: health status less than 50%, capacity decay rate exceeding 50%, internal resistance exceeding 250mΩ, or cycle stability failing to meet the requirements, then the target retired lithium battery is determined to be unrecyclable and should be eliminated.

[0077] S1103. If the health status is not less than the health status threshold, the capacity decay rate does not exceed the capacity decay rate threshold, the internal resistance does not exceed the internal resistance threshold, and the cycle stability is qualified, then it is determined that the target retired lithium battery will be recycled.

[0078] As an example, if the health status is not less than 50%, the capacity decay rate does not exceed 50%, the internal resistance does not exceed 250mΩ, and the cycle stability is qualified, then the target retired lithium battery is determined to be recycled.

[0079] S1104. If it is determined that the target retired lithium battery will be recycled, the corresponding recycling level of the target retired lithium battery shall be determined based on the health status, the capacity decay rate, the internal resistance, and the cycle stability.

[0080] As an example, the recycling levels of target retired lithium batteries can be divided into healthy, medium and inefficient grades. The healthy grade indicates that the battery is in good condition and can be fully utilized; the medium grade indicates that the battery is in average condition and can be partially utilized; and the inefficient grade indicates that the battery is in poor condition and can be partially utilized.

[0081] If it is determined that the target retired lithium battery will be recycled, the corresponding recycling level of the target retired lithium battery will be determined as healthy, medium or inefficient based on its health status, capacity decay rate, internal resistance and cycle stability.

[0082] The recycling grades include healthy, medium, and inefficient grades. In step S1104, if it is determined that the target retired lithium battery will be recycled, the step of determining the corresponding recycling grade of the target retired lithium battery based on its health status, capacity decay rate, internal resistance, and cycle stability includes steps A1-A3:

[0083] Step A1: If it is determined that the target retired lithium battery will be recycled, the corresponding recycling level of the target retired lithium battery whose health status exceeds a preset first health status threshold, whose capacity decay rate does not exceed a preset first capacity decay threshold, and whose internal resistance does not exceed a preset first internal resistance threshold is determined as the health level.

[0084] As an example, the first health state threshold is 80%, the first capacity decay threshold is 20%, and the first internal resistance threshold is 150mΩ.

[0085] The criteria for determining the recycling level as the "healthy" category are: a health status exceeding 80%, a capacity decay rate not exceeding 20%, and an internal resistance not exceeding 150 mΩ.

[0086] Step A2: Determine the recycling grade of the target retired lithium battery as medium, where the health status is within a preset second health status threshold range, the capacity decay rate is within a preset second capacity decay threshold range, and the internal resistance is within a preset second internal resistance threshold range. The value within the second health status threshold range is less than the first health status threshold, the value within the second capacity decay threshold range is greater than the first capacity decay threshold, and the value within the second internal resistance threshold range is greater than the first internal resistance threshold.

[0087] The value within the second health state threshold range is less than the first health state threshold, the value within the second capacity decay threshold range is greater than the first capacity decay threshold, and the value within the second internal resistance threshold range is greater than the first internal resistance threshold.

[0088] As an example, the second health state threshold ranges from 60% to 80%, the second capacity decay threshold ranges from 20% to 40%, and the second internal resistance threshold ranges from 150 mΩ to 200 mΩ.

[0089] The criteria for determining the recycling grade as medium are: the target retired lithium battery's health status is within 60%-80%, the capacity decay rate is within 20%-40%, and the internal resistance is within 150mΩ-200mΩ.

[0090] Step A3: Determine the recycling grade of the target retired lithium battery as the low-efficiency level, where the health status is within a preset third health status threshold range, the capacity decay rate is within a preset third capacity decay threshold range, and the internal resistance is within a preset third internal resistance threshold range. The values ​​within the third health status threshold range are less than the values ​​within the second health status threshold range, the values ​​within the third capacity decay threshold range are greater than the values ​​within the second capacity decay threshold range, and the values ​​within the third internal resistance threshold range are greater than the values ​​within the second internal resistance threshold range.

[0091] The value within the third health state threshold range is less than the value within the second health state threshold range, the value within the third capacity decay threshold range is greater than the value within the second capacity decay threshold range, and the value within the third internal resistance threshold range is greater than the value within the second internal resistance threshold range.

[0092] As an example, the third health state threshold ranges from 50% to 60%, the third capacity decay threshold ranges from 40% to 50%, and the third internal resistance threshold ranges from 200 mΩ to 250 mΩ.

[0093] The criteria for determining the recycling grade as low efficiency are: the target retired lithium battery's health status is within 50%-60%, the capacity decay rate is within 40%-50%, and the internal resistance is within 200mΩ-250mΩ.

[0094] In step S110, in response to the recycling command for the target retired lithium battery, the detection unit in the screening module detects the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery to determine whether to recycle or discard it. This includes steps B1-B4:

[0095] Step B1: If it is determined that the target retired lithium battery will be recycled, determine the auxiliary components to be recycled from the target retired lithium battery, wherein the auxiliary components include metal components, circuit components and structural components;

[0096] If it is determined that the target retired lithium battery will be recycled, the auxiliary components to be recycled in the target retired lithium battery are determined to be metal components, circuit components and structural components.

[0097] As an example, the metal components identified for recycling include aluminum positive electrode tabs, copper negative electrode tabs, aluminum / steel housing, and copper busbars.

[0098] As an example, the circuit components identified for recycling include BMS chips, sensors, and relays.

[0099] As an example, structural components identified for recycling include cell supports, insulating separators, and battery pack casings.

[0100] Step B2: After disassembling the metal parts, remove insulating impurities and regenerate them into new lithium battery tabs, shell raw materials, or industrial metal products.

[0101] As an example, after disassembling metal components such as aluminum positive electrode tabs to remove insulating impurities, high-temperature degreasing (e.g., constant temperature treatment at 300°C for 1 hour), and purification by magnetic separation or air separation, the recovery rate of metal components exceeds 98%. The metal components of auxiliary parts recycled from retired lithium batteries are then regenerated into new lithium battery tabs, casing raw materials, or industrial metal products.

[0102] Step B3: The circuit components are inspected, screened and regenerated. The intact components are removed, their performance is calibrated and they are refurbished and reused. The damaged components are disassembled and the electronic components are extracted.

[0103] As an example, circuit components are inspected and screened. Intact components are cleaned, dehumidified, and calibrated before being refurbished and reused. These refurbished components are used in low-cost energy storage BMS (Battery Management System). Damaged components are disassembled to extract electronic components, which are then used in low-end electronic devices.

[0104] Step B4: The structural components are sorted and disassembled, wherein the aged and brittle plastic parts are removed, the metal parts are purified, and the plastic parts and the metal parts are recycled into battery pack auxiliary materials respectively.

[0105] As an example, structural components are categorized and disassembled. Plastic components are cleaned, cleaned, crushed, and granulated to remove aged and brittle plastic parts for use in industrial plastic products. Metal components are derusted and purified for recycling as battery pack materials.

[0106] In step S110, in response to the recycling command for the target retired lithium battery, the detection unit in the screening module detects the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery to determine whether to recycle or discard it. This includes steps C1-C4:

[0107] Step C1: If it is determined that the target retired lithium battery will be eliminated, the target retired lithium battery will be pre-treated to be harmless through the pre-treatment module;

[0108] The target retired batteries consist of the battery cells and auxiliary components.

[0109] The hard criteria for discarding the cell portion of the target retired lithium battery are as follows: if any one of the following conditions is met, the target retired lithium battery is determined to be unrecyclable and should be discarded.

[0110] The criteria for discarding the target retired lithium battery cells, in addition to health status, capacity decay rate, internal resistance, or cycle stability, can also be based on any of the following: cell bulging, leakage, short circuit, or signs of thermal runaway; tab erosion or casing cracking; overcharge / overdischarge lock-up preventing activation; internal separator damage, or positive and negative electrodes sticking together.

[0111] The core reason for their elimination is that their performance cannot be repaired through pre-processing, and they are prone to overcharging, over-discharging, and thermal runaway after being assembled, posing extremely high safety risks.

[0112] The criteria for discarding the auxiliary components of the target retired lithium battery are as follows: metal components are severely corroded and deformed, and their purity does not meet the standards after purification; circuit components have burned-out chips, failed sensors, and stuck relays, making them impossible to repair and calibrate; structural components have aged and damaged insulation layers and broken supports, making them unusable.

[0113] Determined to be obsolete and having no value for group utilization, the target retired lithium batteries are subject to a pre-treatment module to render them harmless. This pre-treatment is necessary before recycling to eliminate safety risks. The pre-treatment steps include disassembling the cells, stripping the positive and negative electrode plates, removing the separator, and performing high-temperature pyrolysis of the electrolyte, such as anaerobic pyrolysis at 500°C, to eliminate toxic and harmful substances; pulverizing the electrode plates and removing impurities to obtain pure electrode powder.

[0114] Step C2: The retired lithium battery after harmless pretreatment is purified by the regeneration module to extract valuable metal elements.

[0115] The regeneration module purifies the pretreated, harmless electrode powder. Valuable metal elements are extracted; these typically include lithium, nickel, cobalt, manganese, and iron, as well as other elements like phosphorus.

[0116] Retired lithium batteries include ternary lithium batteries and lithium iron phosphate batteries.

[0117] Retired ternary lithium batteries are rich in high-value metals (nickel, cobalt, lithium), making direct recycling highly valuable. The focus is on efficient, high-purity separation and extraction of various precious metals. Lithium iron phosphate batteries do not contain precious metals, and the direct recycling of the cathode material (lithium iron phosphate) itself is less economical. Priority is given to secondary use; their performance remains acceptable after retirement, making them ideal for low-requirement applications such as energy storage and base station backup power. Materials are recycled only after performance depletion.

[0118] Step C3: If the extracted valuable metals include nickel, cobalt and manganese, the extracted valuable metal elements are regenerated into ternary cathode materials through the regeneration module for the production of new battery cells based on the ternary cathode materials.

[0119] Ternary cathode materials typically refer to lithium nickel cobalt manganese oxide, abbreviated as NCM. Mastering the regeneration technology of ternary cathode materials is crucial. Due to its high energy density and relatively good overall performance, this material has become the mainstream choice for power batteries. Ternary cathode materials are oxides composed of four key metallic elements: lithium (Li), nickel (Ni), cobalt (Co), and manganese (Mn). The three transition metals, nickel, cobalt, and manganese, work synergistically: nickel dominates high capacity, cobalt enhances conductivity and stability, and manganese provides structural support and safety. The high performance of ternary cathode materials stems from their precise chemical composition and structure.

[0120] If the extracted valuable metals include nickel, cobalt, and manganese, these elements will be recycled into ternary cathode materials. First, a wet or pyrometallurgical regeneration process is used to completely decompose the old material into metal salts, which are then used to synthesize new materials. Next, direct repair and regeneration is performed, involving lithium replenishment and resintering of the old material to repair its crystal structure. Finally, an upgraded recycling process is initiated, using the old material as a basis to synthesize a new generation of materials with superior performance.

[0121] Step C4: If the extracted valuable metals include iron, the extracted lithium element is recycled into a positive electrode material through the regeneration module for the production of new battery cells, and the extracted iron and phosphorus elements are used to produce chemical additives.

[0122] The recycling logic of lithium iron phosphate batteries is fundamentally different from that of ternary batteries. The core driving force has shifted from the value of precious metals to economies of scale and the need to reduce costs.

[0123] The extracted lithium elements (retired cathode powder) are uniformly mixed with an appropriate amount of lithium source, such as lithium carbonate, through the regeneration module. Low-temperature re-sintering is then performed under an inert atmosphere to replenish the missing lithium, repair the defective crystal structure, and restore its electrochemical performance, thus obtaining the cathode material. This cathode material can be supplied for the manufacture of new battery cells.

[0124] The extracted iron and phosphorus elements can be utilized either synergistically or separately. As an example, synergistic utilization could involve producing iron phosphate or iron phosphide. Iron phosphate could be used as a catalyst or a precursor for preparing other phosphates. Alternatively, iron phosphide could be used as a conductive additive, incorporated into newly prepared lithium iron phosphate. As an example, separate utilization could involve producing iron-based pigments or coatings, or providing color and rust-preventive properties. Phosphorus could also be used as a phosphorus-based flame retardant, such as in plastics and rubber, to improve the flame retardancy of the materials. Iron phosphide, a byproduct of lithium iron phosphate production, is itself an excellent additive. Directly incorporating a small amount (e.g., 0.5% by mass) into new lithium iron phosphate cathode materials can act as a conductive network, significantly improving the lithium-ion diffusion rate and electronic conductivity, thereby improving the battery's fast-charging performance and cycle stability.

[0125] S120. If it is determined that the target retired lithium battery will be recycled, then the pretreatment module will perform graded pretreatment according to the matching recycling level.

[0126] Different recycling grades require different pre-treatment steps. Unlike existing technologies that rely solely on rough information such as battery pack model, brand, or appearance for sorting, leading to the mixing of inferior cells and resulting in poor performance, short lifespan, and significant safety hazards in the reconstituted battery packs, this application employs a tiered pre-treatment system based on recycling grades: healthy, medium, and inefficient. This avoids mixing cells with different chemical compositions and health levels, ensuring precise screening and differentiated pre-treatment to maximize recycling value and meet the needs of large-scale, high-quality recycling.

[0127] Retired lithium batteries classified as "healthy" will be prioritized for recycling and only require basic pretreatment. Retired lithium batteries classified as "medium" will be recycled in stages and require deep pretreatment. Retired lithium batteries classified as "inefficient" will be precisely recycled and require restorative pretreatment.

[0128] If it is determined in S120 that the target retired lithium battery will be recycled, then the pretreatment module will perform graded pretreatment according to the matching recycling level, including steps S1201-S1203:

[0129] S1201. If it is determined that the target retired lithium battery will be recycled, the target retired lithium battery with the recycling level of the health grade will be processed by the pre-processing module through a basic pre-processing step, wherein the basic pre-processing step includes a non-destructive disassembly sub-step, a cleaning sub-step, a full parameter re-inspection sub-step, and a connector replacement sub-step.

[0130] If it is determined that the target retired lithium battery will be recycled, the pretreatment module will perform basic pretreatment on the target retired lithium battery with a recycling level of the healthy grade to ensure stable performance.

[0131] The basic pretreatment steps include a non-destructive disassembly sub-step, a cleaning sub-step, a full parameter re-inspection sub-step, and a connector replacement sub-step. The non-destructive disassembly sub-step is a crucial first step in the lithium battery regeneration process. Its core objective is to maximize the integrity of the cell while ensuring safety and efficiency, laying the foundation for subsequent efficient and high-value material regeneration. This results in cells with intact structures, no short-circuit damage, and no mixing of positive and negative electrode materials, which is a prerequisite for achieving material-level rather than element-level regeneration.

[0132] The non-destructive disassembly steps for the target retired lithium battery include: deep discharge and insulation treatment; using visual positioning and robotic collaboration to precisely remove the outer casing, high-voltage connectors, BMS (Battery Management System), cooling modules, and other layers of the battery pack; and removing the fixings between cells, such as adhesives and bundles, to achieve cell separation. The entire process avoids violent disassembly to prevent cell damage, ultimately separating each cell intact. As an example, an intelligent disassembly module integrating lasers, robots, and AI vision can be used for non-destructive disassembly.

[0133] The cleaning process for retired lithium batteries involves several steps. Because electrolyte solvents such as carbonates are volatile and potentially toxic, the process is carried out in a forced-ventilation environment. Anti-static brushes and vacuum cleaners are used to remove impurities that could contaminate subsequent processes, such as dust, metal shavings, and rust. For rust, non-connected areas can be wiped with anhydrous ethanol. Thorough chemical cleaning removes corrosive and conductive electrolyte residues. For cells with obvious leaks, low-polarity solvents such as specific carbonates are used for wiping or short-term soaking to dissolve residual electrolyte. Neutralization is then required, and waste liquid is collected professionally. Finally, the cells are dried at a constant temperature of 45°C for 2 hours to completely remove moisture, preventing moisture from reacting with materials during subsequent breakage or causing electrode slurry deterioration. The 45°C drying temperature is chosen because it is an equilibrium point, sufficient to evaporate free moisture, and far below the flash point of the electrolyte solvent and the softening point of most binders, avoiding the risk of thermal runaway or damage to the electrode structure. The key indicator for the completion of constant temperature drying is that the moisture content of the battery cell or material after drying should be less than 5% after being tested by a rapid moisture analyzer.

[0134] The sub-step of full parameter re-inspection of the target retired lithium battery includes secondary testing of voltage, internal resistance, capacity and SOH, and elimination of cells that were misjudged in the initial screening.

[0135] The sub-step for updating the connectors of retired lithium-ion batteries aims to restore or ensure the reliability of the battery module's electrical connections. This sub-step involves identifying and marking aged electrode tabs, which are the sheet-like protrusions on the positive aluminum or negative nickel or copper electrodes of the battery cell. The aged electrode tabs are inspected for severe oxidation, corrosion, breakage, perforation, or significant embrittlement. The metal strips connecting multiple electrodes are also inspected for overall corrosion, overheating discoloration, weld cracks, or structural loosening in the aged busbars. Parts requiring removal are clearly marked, and new copper-aluminum composite connectors are used to ensure conductivity stability. It is crucial to avoid damaging the battery cell itself, especially the sealing rings, or causing internal short circuits. For laser-welded or ultrasonically welded points, small precision cutting tools may be necessary. As an example, specialized insulated tools such as plastic shovels, insulated pliers, or precisely controlled heating tools such as hot air guns can be used to assist in removal.

[0136] S1202. The target retired lithium battery with the recycling grade of medium is first subjected to the basic pretreatment step by the pretreatment module, and then the target retired lithium battery is subjected to charge and discharge activation treatment to repair capacity decay and differential fluctuation matching treatment.

[0137] Deep pretreatment is performed on retired lithium batteries with a recycling grade of medium. This requires the same basic pretreatment as for retired lithium batteries in the healthy grade: first, non-destructive disassembly; then, cleaning; followed by full parameter re-inspection; and finally, replacement of connectors.

[0138] For retired lithium batteries with a medium recycling grade, in addition to basic pretreatment, charge-discharge activation treatment is required to repair capacity decay and match capacity fluctuations. This is a core step in determining whether the battery module can be safely and efficiently put into secondary use. The purpose of the charge-discharge activation treatment is not to repair all capacity decay—irreversible physical damage cannot be repaired—but rather to attempt to restore reversible capacity loss caused by long-term stagnation or shallow charge-discharge cycles through controlled and gentle charge-discharge cycles, while simultaneously conducting a deep performance evaluation of each cell. This process removes the passivation layer, allows the electrolyte to re-wet evenly, and enables lithium ions to redistribute evenly within the electrodes.

[0139] The charge-discharge activation process involves first connecting the module or individual cell with updated connectors to a high-precision battery testing system in a safe environment. A low-rate, shallow-cycle, and gradually increasing-rate strategy is employed to avoid stress shock. Cycles 1-3 are performed at a gentle rate with a narrow voltage window, for example, shrinking the voltage by 10% within the normal range. This aims to gently activate the material without applying excessive pressure. Cycles 4-6 restore the cell to its nominal normal voltage window, still using a low rate (0.2C-0.3C). Close observation of voltage plateaus, internal resistance, and temperature rise is maintained. After 7-10 cycles, provided the temperature rise and curve shape are normal under safe conditions, a full capacity test at a standard rate (e.g., 0.5C) can be attempted to obtain stable performance data after activation. The voltage, current, surface temperature, and charge-discharge curve shape of each cell are monitored throughout the process. Abnormal voltage drops, disappearance of plateaus, or sudden temperature rises are signs of irreversible damage to the cell. The capacity, internal resistance, and curves before and after activation are compared. Signs of repairability include a slight capacity recovery (e.g., within 5%), a slight decrease in internal resistance, and a clearer plateau in the charging / discharging curve. Signs of irreparable / discardable battery cells include no capacity recovery or continued decline, a significant increase in internal resistance, severe distortion of the charging / discharging curve, or abnormal overheating. Based on the final test data, cells that meet performance standards and are stable are selected for the next step. Unqualified cells are discarded.

[0140] The differential fluctuation matching process is the essence of the tiered utilization technology. Its purpose is to combine cells with similar performance to ensure synchronized operation in the new module and avoid the "weakest link" effect. For each activated cell, a set of key parameters are collected, and the differences between these parameters are minimized. For example, the static parameter capacity, and the actual capacity after activation and stabilization, are the most important matching dimensions. For static parameters, DC internal resistance, and for dynamic parameters, the shape of the charge / discharge curve, especially the voltage-capacity curve, are also important; the consistency of the curve shape is more important than a single voltage value. The dynamic parameter capacity difference curve can keenly reflect subtle differences in the internal state of the cell. The specific differential fluctuation matching process prioritizes capacity, with internal resistance and curve analysis as secondary considerations. All cells are categorized by capacity value, for example, in 2% increments. Cells are selected first from the same capacity category. Within the same capacity category, the internal resistance and charge / discharge curves of the cells are compared. Cells with significantly abnormal curve shapes are eliminated. Using testing system software, the maximum voltage difference and temperature difference of the candidate cell group under simulated series-parallel operation are calculated. Ensure that the differential fluctuations are within acceptable thresholds during simulated charge and discharge. This results in multiple performance packages, each containing cells that are highly consistent in capacity, internal resistance, and dynamic behavior. Label each cell with all key parameters.

[0141] S1203. The target retired lithium battery with the recycling level of the low efficiency grade is first subjected to the basic pretreatment step by the pretreatment module, and then the target retired lithium battery is subjected to pulse repair treatment to repair internal resistance and multiple charge and discharge activation treatment to repair capacity decay, and finally grouped for processing.

[0142] Low-efficiency retired lithium batteries require precise recycling and restorative pretreatment. In addition to basic pretreatment steps, pulse repair treatment is needed to restore internal resistance, and multiple charge-discharge activation treatments are required to restore capacity decay. Finally, the batteries are processed in groups.

[0143] The process involves pulse repair of retired lithium-ion batteries after basic pretreatment. Pulse repair aims to address increased internal resistance caused by factors such as poor lithium-ion migration and excessive SEI film growth through non-equilibrium current excitation. High-intensity pulsed current can create micro-perturbations on the passivation layer (SEI film) on the electrode surface, potentially causing partial reconstruction or loosening of excessively thick or uneven SEI films, thus reducing ion migration resistance. The transient characteristics of the pulse can polarize the lithium-ion concentration in the electrolyte, disrupting the equilibrium state and helping to activate active materials and improve the diffusion kinetics of lithium ions within the electrode. It also alleviates localized charge accumulation on the electrode surface caused by long-term use or stagnation. By employing pulse repair technology, internal cell polarization is eliminated, and the internal resistance is controlled below 250 mΩ.

[0144] The process involves multiple rounds of charge-discharge activation treatment on the target retired lithium batteries. By designing multiple rounds of charge-discharge cycles with different strategies, the reversible capacity is maximized and the cell state is thoroughly stabilized. After pulse repair and multiple rounds of activation, the cell state is fully stimulated and exposed. Capacity is used as the primary factor for coarse grouping to ensure the overall energy consistency of the reconstituted modules. Within each capacity range, secondary fine grouping is performed using multiple dimensions such as internal resistance, curve shape, and aging trend as feature vectors, aiming to minimize the distance between cells within each group in these multi-dimensional spaces. A full lifecycle digital profile is established for each cell in the final group, recording its original information, all repair parameters, and full-process test data. This is crucial to ensuring the traceability and evaluability of subsequent reuse products.

[0145] S130. The target retired lithium battery after graded preprocessing is adapted to a reuse scenario through the differential matching module to obtain a reuse scenario that matches the target retired lithium battery.

[0146] The pretreatment steps for different recycling grades are different. Here, the target retired lithium batteries after different recycling grades are pretreated and adapted to actual reuse scenarios to obtain a reuse scenario that matches the target retired lithium batteries.

[0147] Unlike the indiscriminate use in existing technologies, this application adapts to different recycling levels, different graded pretreatment methods, and different reuse scenarios.

[0148] As an example, the reuse scenarios for healthy-grade retired lithium batteries include backup power for communication base stations and energy storage for low-speed electric vehicles. With intelligent balancing control system regulation, the consistency, lifespan, and efficiency of the batteries after assembly meet standards, and the cost is only 1 / 3 of that of new cells. For medium-grade retired lithium batteries, the reuse scenarios include residential energy storage, street light energy storage, and portable emergency power supplies. With a simplified balancing strategy, they meet the needs of low-frequency charging and discharging, achieving a cycle life of over 300 cycles. For inefficient retired lithium batteries, the reuse scenarios include photovoltaic street lights, backup power for low-speed charging piles, and temporary lighting at construction sites. Only shallow charging and discharging (SOC 20%–80%) is required to avoid accelerated degradation due to deep charging and discharging.

[0149] S140. The target retired lithium battery after graded pretreatment is recycled according to the reuse scenario through the regeneration module to obtain a new battery that can be reused in the reuse scenario.

[0150] For retired lithium batteries in the healthy category, after pretreatment and passing the initial screening, the entire cell is retained, with only aged auxiliary parts removed, leaving the complete cell body intact. For retired lithium batteries in the medium category, after pretreatment, the entire cell is screened and paired to ensure that the performance of cells in the same group is matched. For retired lithium batteries in the inefficient category, after pretreatment and passing the initial screening, they are grouped according to a specific standard and are not mixed with cells from other categories.

[0151] S140 involves the regeneration module performing personalized recycling of the pre-treated target retired lithium batteries according to the reuse scenario, resulting in new batteries that can be reused in the reuse scenario. This includes steps S1401-S1403.

[0152] Step S1401: According to the first reuse scenario corresponding to the health status, the whole cell of the target retired lithium battery in the health status is retained by the regeneration module to preserve the complete cell body, wherein only the aging accessories in the target retired lithium battery in the health status are removed.

[0153] In this embodiment, the reuse scenario for the health profile is the first reuse scenario, the reuse scenario for the medium profile is the second reuse scenario, and the reuse scenario for the inefficient profile is the third reuse scenario.

[0154] As an example, the first reuse scenario could be backup power for communication base stations or energy storage for low-speed electric vehicles. The second reuse scenario could be residential energy storage, street light energy storage, or portable emergency power supplies. The third reuse scenario could be backup power for photovoltaic street lights, low-speed charging piles, or temporary lighting at construction sites.

[0155] According to the first reuse scenario corresponding to the health status, the regeneration module retains the complete cell of the target retired lithium battery in the health status, preserving the complete cell body, wherein only the aged accessories in the target retired lithium battery in the health status are removed.

[0156] Step S1402: According to the second reuse scenario corresponding to the medium grade, the whole cells of the target retired lithium battery of the medium grade are screened and matched by the regeneration module. The performance of the cells in the same group is matched, and the recycling level of the cells in the same group can include the healthy grade or the medium grade, but does not include the inefficient grade.

[0157] According to the second reuse scenario corresponding to the medium grade, the whole cells of the target retired lithium battery of the medium grade are screened and matched by the regeneration module. The performance of the cells in the same group is matched, and the recycling level of the cells in the same group can include the healthy grade or the medium grade, but does not include the inefficient grade.

[0158] Step S1403: According to the third reuse scenario corresponding to the low efficiency level, the target retired lithium batteries of the low efficiency level are grouped by the regeneration module. The recycling level of the cells in the same group is the low efficiency level, excluding other recycling levels.

[0159] According to the third reuse scenario corresponding to the low efficiency level, the target retired lithium batteries in the low efficiency level are grouped by the regeneration module. The recycling level of cells in the same group is the low efficiency level, excluding other recycling levels.

[0160] Figure 2 This is a schematic block diagram of a retired lithium battery recycling system provided in an embodiment of this application. Figure 2 As shown, corresponding to the above-described method for recycling retired lithium batteries, this application also provides a retired lithium battery recycling system 600. The retired lithium battery recycling system 600 includes a unit for performing the above-described recycling of retired lithium batteries, and the retired lithium battery recycling system 600 can be configured in terminals such as desktop computers, tablet computers, and laptops. For details, please refer to... Figure 2 The retired lithium battery recycling system 600 includes a screening module 601, a pretreatment module 602, a differential matching module 603, and a regeneration module 604, wherein:

[0161] The screening module 601 is used to respond to a recycling command for recycling a target retired lithium battery. The detection unit detects the health status, capacity decay rate, internal resistance and cycle stability of the target retired lithium battery to determine whether the target retired lithium battery should be recycled or discarded. The target retired lithium battery determined to be recycled has a corresponding recycling level.

[0162] The pretreatment module 602 is used to perform graded pretreatment according to the matching recycling level if it is determined that the target retired lithium battery will be recycled.

[0163] The differential matching module 603 is used to adapt the target retired lithium battery after graded preprocessing to a reuse scenario to obtain a reuse scenario that matches the target retired lithium battery.

[0164] The regeneration module 604 is used to perform personalized and differentiated recycling of the target retired lithium batteries after graded pretreatment according to the reuse scenario, so as to obtain new batteries that can be reused in the reuse scenario.

[0165] In some embodiments, the screening module 601, upon executing a recycling command in response to the recycling of a target retired lithium battery, uses a detection unit in the screening module to detect the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery, and determines whether to recycle or discard the target retired lithium battery. Specifically, this is used for:

[0166] In response to a recycling instruction to recycle a target retired lithium battery, the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery are detected by the detection unit in the screening module to obtain the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery.

[0167] If at least one of the following conditions is met: the health status is less than a preset health status threshold, the capacity decay rate exceeds a preset capacity decay rate threshold, the internal resistance exceeds a preset internal resistance threshold, or the cycle stability is unqualified, then the target retired lithium battery is determined to be eliminated.

[0168] If the health status is not less than the health status threshold, the capacity decay rate does not exceed the capacity decay rate threshold, the internal resistance does not exceed the internal resistance threshold, and the cycle stability is qualified, then it is determined that the target retired lithium battery will be recycled.

[0169] If it is determined that the target retired lithium battery will be recycled, the corresponding recycling level of the target retired lithium battery will be determined based on the health status, the capacity decay rate, the internal resistance, and the cycle stability.

[0170] In some embodiments, the recycling grades include a healthy grade, a medium grade, and an inefficient grade. When the screening module 601 determines that the target retired lithium battery should be recycled, it determines the corresponding recycling grade of the target retired lithium battery based on the healthy state, the capacity decay rate, the internal resistance, and the cycle stability. Specifically, this is used for:

[0171] If it is determined that the target retired lithium battery will be recycled, the corresponding recycling level of the target retired lithium battery whose health status exceeds a preset first health status threshold, whose capacity decay rate does not exceed a preset first capacity decay threshold, and whose internal resistance does not exceed a preset first internal resistance threshold is determined as the health level.

[0172] The recycling grade of a target retired lithium battery is determined to be medium, wherein the health status is within a preset second health status threshold range, the capacity decay rate is within a preset second capacity decay threshold range, and the internal resistance is within a preset second internal resistance threshold range. The value within the second health status threshold range is less than the first health status threshold, the value within the second capacity decay threshold range is greater than the first capacity decay threshold, and the value within the second internal resistance threshold range is greater than the first internal resistance threshold.

[0173] The recycling grade of a target retired lithium battery is determined to be the low-efficiency grade, where the health status is within a preset third health status threshold range, the capacity decay rate is within a preset third capacity decay threshold range, and the internal resistance is within a preset third internal resistance threshold range. The values ​​within the third health status threshold range are less than the values ​​within the second health status threshold range, the values ​​within the third capacity decay threshold range are greater than the values ​​within the second capacity decay threshold range, and the values ​​within the third internal resistance threshold range are greater than the values ​​within the second internal resistance threshold range.

[0174] In some embodiments, the preprocessing module 602, when performing the step of determining that the target retired lithium battery should be recycled, performs graded preprocessing according to the matching recycling level, specifically for:

[0175] If it is determined that the target retired lithium battery will be recycled, the target retired lithium battery with the recycling level of the health grade will be processed by the pre-processing module through basic pre-processing steps, wherein the basic pre-processing steps include non-destructive disassembly sub-step, cleaning sub-step, full parameter re-inspection sub-step, and connector replacement sub-step.

[0176] The pretreatment module first performs the basic pretreatment steps on the target retired lithium battery with the recycling grade of medium, and then performs charge and discharge activation treatment on the target retired lithium battery to repair capacity decay and match the difference fluctuation.

[0177] The pretreatment module first performs the basic pretreatment steps on the target retired lithium batteries with the recycling level of inefficiency, then performs pulse repair treatment to repair internal resistance and multiple charge-discharge activation treatment to repair capacity decay, and finally processes them in groups.

[0178] In some embodiments, the regeneration module 604 performs personalized recycling of the target decommissioned lithium battery after graded pretreatment according to the reuse scenario to obtain a new battery that can be reused in the reuse scenario, specifically for:

[0179] According to the first reuse scenario corresponding to the health status, the whole cell of the target retired lithium battery in the health status is retained by the regeneration module, and the complete cell body is preserved. Only the aging accessories in the target retired lithium battery in the health status are removed.

[0180] According to the second reuse scenario corresponding to the medium grade, the whole cells of the target retired lithium battery of the medium grade are screened and matched by the regeneration module. The performance of the cells in the same group is matched, and the recycling level of the cells in the same group can include the healthy grade or the medium grade, but does not include the inefficient grade.

[0181] According to the third reuse scenario corresponding to the low efficiency level, the target retired lithium batteries in the low efficiency level are grouped by the regeneration module. The recycling level of cells in the same group is the low efficiency level, excluding other recycling levels.

[0182] In some embodiments, after the detection unit in the screening module detects the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery in response to a recycling command for recycling the target retired lithium battery, and determines whether the target retired lithium battery should be recycled or discarded:

[0183] The pretreatment module 602 is specifically used to perform harmless pretreatment on the target retired lithium battery if it is determined that the target retired lithium battery should be eliminated.

[0184] The regeneration module 604 is specifically used to purify retired lithium batteries after harmless pretreatment and extract valuable metal elements from them.

[0185] If the extracted valuable metals include nickel, cobalt, and manganese, the extracted valuable metal elements will be recycled into ternary cathode materials for the production of new battery cells based on the ternary cathode materials.

[0186] If the extracted valuable metals include iron, the extracted lithium element is recycled into a positive electrode material through the regeneration module for the production of new battery cells, and the extracted iron and phosphorus elements are used to produce chemical additives.

[0187] In some embodiments, after the detection unit in the screening module detects the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery in response to a recycling command for recycling the target retired lithium battery, and determines whether the target retired lithium battery should be recycled or discarded, the regeneration module 604 is specifically used for:

[0188] If it is determined that the target retired lithium battery will be recycled, the auxiliary components to be recycled in the target retired lithium battery will be determined, wherein the auxiliary components include metal components, circuit components and structural components;

[0189] After disassembling the metal components, insulating impurities are removed, and the components are recycled into new lithium battery tabs, shell raw materials, or industrial metal products.

[0190] The circuit components are inspected, screened, and regenerated. The intact components that are inspected and screened are impurity removed, performance calibrated, and refurbished for reuse. The damaged components that are inspected and screened are disassembled and their electronic components are extracted.

[0191] The structural components are classified and disassembled, wherein the aged and brittle plastic parts are removed, the metal parts are purified, and the plastic parts and the metal parts are recycled into battery pack auxiliary materials respectively.

[0192] This application provides a method, system, computer equipment, and storage medium for recycling retired lithium batteries. In response to a recycling command to recycle a target retired lithium battery, the detection unit in the screening module detects the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery to determine whether it should be recycled or discarded. The target retired lithium battery determined for recycling corresponds to a specific recycling level. If recycling is determined, the pre-processing module performs graded pre-processing according to the matching recycling level. The differential matching module adapts the graded pre-processed target retired lithium battery to a reuse scenario, obtaining a reuse scenario that matches the target lithium battery. The regeneration module performs personalized differential recycling processing on the graded pre-processed target retired lithium battery according to the reuse scenario, obtaining a new battery that can be reused in the reuse scenario. This application differs from existing methods that rely solely on rough information such as battery pack model and appearance for sorting. It obtains the true health status and residual capacity of the internal cells, and the differential pre-processing accurately screens and grades the batteries, improving the tiered utilization rate and solving the technical problem of poor recycling effect of retired lithium batteries.

[0193] It should be noted that those skilled in the art can clearly understand that the specific implementation process of the above-mentioned retired lithium battery recycling system and its various units can be referred to the corresponding descriptions in the foregoing method embodiments. For the sake of convenience and brevity, these details will not be repeated here.

[0194] The aforementioned retired lithium battery recycling system can be implemented as a computer program, which can, for example... Figure 3 It runs on the computer device shown.

[0195] Please see Figure 3 , Figure 3 This is a schematic block diagram of a computer device provided in an embodiment of this application. The computer device 700 can be a terminal or a server. The terminal can be an electronic computer device with communication functions, such as a smartphone, tablet, laptop, desktop computer, personal digital assistant, or wearable computer device. The server can be a standalone server or a server cluster composed of multiple servers.

[0196] See Figure 3 The computer device 700 includes a processor 702, a memory, and a network interface 705 connected via a system bus 701. The memory may include a non-volatile storage medium 703 and internal memory 704.

[0197] The non-volatile storage medium 703 may store an operating system 7031 and a computer program 7032. The computer program 7032 includes program instructions that, when executed, cause the processor 702 to perform a process for recycling retired lithium batteries.

[0198] The processor 702 provides computing and control capabilities to support the operation of the entire computer device 700.

[0199] The internal memory 704 provides an environment for the operation of the computer program 7032 in the non-volatile storage medium 703. When the computer program 7032 is executed by the processor 702, the processor 702 can perform a process for recycling retired lithium batteries.

[0200] This network interface 705 is used for network communication with other computer devices. Those skilled in the art will understand that... Figure 3 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device 700 to which the present application is applied. The specific computer device 700 may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0201] The processor 702 is used to run the computer program 7032 stored in the memory to perform the following steps:

[0202] In response to a recycling instruction to recycle a target retired lithium battery, the detection unit in the screening module detects the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery to determine whether to recycle or discard it. The target retired lithium battery determined to be recycled has a corresponding recycling level.

[0203] If it is determined that the target retired lithium battery will be recycled, then the pretreatment module will perform graded pretreatment according to the matching recycling level.

[0204] The differentiated matching module is used to adapt the target retired lithium battery after graded preprocessing to a reuse scenario, thereby obtaining a reuse scenario that matches the target lithium battery.

[0205] The regeneration module performs personalized recycling of the target retired lithium batteries after graded pretreatment according to the reuse scenario, resulting in new batteries that can be reused in the reuse scenario.

[0206] It should be understood that in the embodiments of this application, the processor 702 may be a central processing unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0207] It will be understood by those skilled in the art that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program includes program instructions and can be stored in a storage medium, which is a computer-readable storage medium. The program instructions are executed by at least one processor in the computer system to implement the process steps of the embodiments of the above methods.

[0208] Therefore, this application also provides a storage medium. This storage medium can be a computer-readable storage medium. The storage medium stores a computer program, wherein the computer program includes program instructions. When executed by a processor, the program instructions cause the processor to perform the following steps:

[0209] In response to a recycling instruction to recycle a target retired lithium battery, the detection unit in the screening module detects the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery to determine whether to recycle or discard it. The target retired lithium battery determined to be recycled has a corresponding recycling level.

[0210] If it is determined that the target retired lithium battery will be recycled, then the pretreatment module will perform graded pretreatment according to the matching recycling level.

[0211] The differentiated matching module is used to adapt the target retired lithium battery after graded preprocessing to a reuse scenario, thereby obtaining a reuse scenario that matches the target lithium battery.

[0212] The regeneration module performs personalized recycling of the target retired lithium batteries after graded pretreatment according to the reuse scenario, resulting in new batteries that can be reused in the reuse scenario.

[0213] The storage medium can be any computer-readable storage medium that can store program code, such as a USB flash drive, external hard drive, read-only memory (ROM), magnetic disk, or optical disk.

[0214] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this application.

[0215] In the embodiments provided in this application, it should be understood that the disclosed systems and methods can be implemented in other ways. For example, the system embodiments described above are merely illustrative. For example, the division of each unit is only a logical functional division, and there may be other division methods in actual implementation. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed.

[0216] The steps in the methods of this application embodiment can be adjusted, merged, or deleted according to actual needs. The units in the system of this application embodiment can be merged, divided, or deleted according to actual needs. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0217] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a terminal, or a network computer device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application.

[0218] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for recycling retired lithium batteries, characterized in that, The retired lithium battery recycling method is applied to a retired lithium battery recycling system, which includes a screening module, a pretreatment module, a differential matching module, and a regeneration module. The method includes: In response to a recycling instruction to recycle a target retired lithium battery, the detection unit in the screening module detects the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery to determine whether the target retired lithium battery should be recycled or discarded. The target retired lithium battery determined to be recycled has a corresponding recycling level. If it is determined that the target retired lithium battery will be recycled, then the pretreatment module will perform graded pretreatment according to the matching recycling level. The differentiated matching module is used to adapt the target retired lithium battery after graded preprocessing to a reuse scenario, thereby obtaining a reuse scenario that matches the target retired lithium battery. The recycling module performs personalized recycling of the pre-treated retired lithium batteries according to the reuse scenarios, resulting in new batteries that can be reused in the reuse scenarios. The recycling levels include healthy, medium, and inefficient. In the first reuse scenario corresponding to the healthy level, the recycling module retains the complete cells of the healthy retired lithium batteries, preserving the intact cell body and removing only aged accessories. In the second reuse scenario corresponding to the medium level, the recycling module screens and pairs the cells of the medium-level retired lithium batteries. Cells in the same group include those in the healthy or medium level, but not those in the inefficient level. In the third reuse scenario corresponding to the inefficient level, the recycling module groups the inefficient retired lithium batteries. Cells in the same group are all in the inefficient level, excluding other recycling levels.

2. The method according to claim 1, characterized in that, In response to a recycling command to recycle a target retired lithium battery, the detection unit in the screening module detects the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery to determine whether to recycle or discard it, including: In response to a recycling instruction to recycle a target retired lithium battery, the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery are detected by the detection unit in the screening module to obtain the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery. If at least one of the following conditions is met: the health status is less than a preset health status threshold, the capacity decay rate exceeds a preset capacity decay rate threshold, the internal resistance exceeds a preset internal resistance threshold, or the cycle stability is unqualified, then the target retired lithium battery is determined to be eliminated. If the health status is not less than the health status threshold, the capacity decay rate does not exceed the capacity decay rate threshold, the internal resistance does not exceed the internal resistance threshold, and the cycle stability is qualified, then it is determined that the target retired lithium battery will be recycled. If it is determined that the target retired lithium battery will be recycled, the corresponding recycling level of the target retired lithium battery will be determined based on the health status, the capacity decay rate, the internal resistance, and the cycle stability.

3. The method according to claim 2, characterized in that, If it is determined that the target retired lithium battery will be recycled, the corresponding recycling level of the target retired lithium battery is determined based on the health status, the capacity decay rate, the internal resistance, and the cycle stability, including: If it is determined that the target retired lithium battery will be recycled, the corresponding recycling level of the target retired lithium battery whose health status exceeds a preset first health status threshold, whose capacity decay rate does not exceed a preset first capacity decay threshold, and whose internal resistance does not exceed a preset first internal resistance threshold is determined as the health level. The recycling grade of a target retired lithium battery is determined to be medium, wherein the health status is within a preset second health status threshold range, the capacity decay rate is within a preset second capacity decay threshold range, and the internal resistance is within a preset second internal resistance threshold range. The value within the second health status threshold range is less than the first health status threshold, the value within the second capacity decay threshold range is greater than the first capacity decay threshold, and the value within the second internal resistance threshold range is greater than the first internal resistance threshold. The recycling grade of a target retired lithium battery is determined to be the low-efficiency grade, where the health status is within a preset third health status threshold range, the capacity decay rate is within a preset third capacity decay threshold range, and the internal resistance is within a preset third internal resistance threshold range. The values ​​within the third health status threshold range are less than the values ​​within the second health status threshold range, the values ​​within the third capacity decay threshold range are greater than the values ​​within the second capacity decay threshold range, and the values ​​within the third internal resistance threshold range are greater than the values ​​within the second internal resistance threshold range.

4. The method according to claim 3, characterized in that, If it is determined that the target retired lithium battery will be recycled, then the pretreatment module will perform graded pretreatment according to the matching recycling level, including: If it is determined that the target retired lithium battery will be recycled, the target retired lithium battery with the recycling level of the health grade will be processed by the pre-processing module through basic pre-processing steps, wherein the basic pre-processing steps include non-destructive disassembly sub-step, cleaning sub-step, full parameter re-inspection sub-step, and connector replacement sub-step. The pretreatment module first performs the basic pretreatment steps on the target retired lithium battery with the recycling grade of medium, and then performs charge and discharge activation treatment on the target retired lithium battery to repair capacity decay and match the difference fluctuation. The pretreatment module first performs the basic pretreatment steps on the target retired lithium batteries with the recycling level of inefficiency, then performs pulse repair treatment to repair internal resistance and multiple charge-discharge activation treatment to repair capacity decay, and finally processes them in groups.

5. The method according to claim 1, characterized in that, In response to a recycling command for the target retired lithium battery, the detection unit in the screening module detects the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery to determine whether to recycle or discard it, including: If it is determined that the target retired lithium battery should be eliminated, the target retired lithium battery shall be subjected to harmless pretreatment through the pretreatment module; The regeneration module is used to purify retired lithium batteries after they have undergone harmless pretreatment, and to extract valuable metal elements from them. If the extracted valuable metals include nickel, cobalt, and manganese, the extracted valuable metal elements are regenerated into ternary cathode materials through the regeneration module for the production of new battery cells based on the ternary cathode materials. If the extracted valuable metals include iron, the extracted lithium element is recycled into a positive electrode material through the regeneration module for the production of new battery cells, and the extracted iron and phosphorus elements are used to produce chemical additives.

6. The method according to claim 1, characterized in that, In response to a recycling command for the target retired lithium battery, the detection unit in the screening module detects the health status, capacity decay rate, internal resistance, and cycle stability of the target retired lithium battery to determine whether to recycle or discard it, including: If it is determined that the target retired lithium battery will be recycled, the auxiliary components to be recycled in the target retired lithium battery will be determined, wherein the auxiliary components include metal components, circuit components and structural components; After disassembling the metal parts, insulating impurities are removed, and the parts are recycled into industrial metal products. The circuit components are inspected, screened, and regenerated. The intact components that are inspected and screened are impurity removed, performance calibrated, and refurbished for reuse. The damaged components that are inspected and screened are disassembled and their electronic components are extracted. The structural components are classified and disassembled, wherein the aged and brittle plastic parts are removed, the metal parts are purified, and the plastic parts and the metal parts are recycled into battery pack auxiliary materials respectively.

7. A retired lithium battery recycling system, characterized in that, The retired lithium battery recycling system includes a screening module, a pretreatment module, a differential matching module, and a regeneration module. The screening module is used to respond to the recycling command for recycling the target retired lithium battery. The detection unit detects the health status, capacity decay rate, internal resistance and cycle stability of the target retired lithium battery to determine whether the target retired lithium battery should be recycled or discarded. The target retired lithium battery determined to be recycled has a corresponding recycling level. A pretreatment module is used to perform graded pretreatment according to the matching recycling level if it is determined that the target retired lithium battery will be recycled. The differentiated matching module is used to adapt the target retired lithium battery after graded preprocessing to a reuse scenario to obtain a reuse scenario that matches the target retired lithium battery. The recycling module is used to perform personalized recycling of the target retired lithium batteries after graded pretreatment according to the reuse scenarios, resulting in new batteries that can be reused in the reuse scenarios. The recycling levels include healthy, medium, and inefficient levels. According to the first reuse scenario corresponding to the healthy level, the recycling module retains the complete cells of the target retired lithium batteries in the healthy level, preserving the intact cell body and removing only aged accessories. According to the second reuse scenario corresponding to the medium level, the recycling module screens and pairs the complete cells of the target retired lithium batteries in the medium level. Cells in the same group include those in the healthy or medium level, but not those in the inefficient level. According to the third reuse scenario corresponding to the inefficient level, the recycling module groups the target retired lithium batteries in the inefficient level. Cells in the same group are all in the inefficient level, excluding other recycling levels.

8. A computer device for recycling retired lithium batteries, characterized in that, The method includes a memory, a processor, and a retired lithium battery recycling program stored in the memory and executable on the processor, wherein the processor executes the retired lithium battery recycling program to implement the steps of the retired lithium battery recycling method according to any one of claims 1 to 6.

9. A storage medium, characterized in that, The storage medium stores a program for implementing a method for recycling retired lithium batteries, the program for implementing the method for recycling retired lithium batteries being executed by a processor to implement the steps of the method for recycling retired lithium batteries as described in any one of claims 1 to 6.

Images