Methods, apparatus, equipment and storage media for RMS-based accounting and traceability of recycled materials

Abstract

This invention provides a method, apparatus, equipment, and storage medium for RMS-based accounting and traceability of recycled materials, comprising: recovering recycled cathode materials from waste batteries and collecting process parameters on the recycled cathode material production line; wherein, the process parameters include: a first mass of the elements of the waste battery in the mixed precursor, a second mass in the recycled cathode material, a first proportion of recycled materials in the purchased precursor, a purchase rate in the precursor, a second proportion of recycled materials in the purchased crude salt, and a third proportion of purchased metal salts used in the production of the precursor; the recycled material proportion of the elements is obtained based on the nonlinear relationship between the first mass, the first proportion, the purchase rate, the second proportion, the third proportion, and the second mass; using this invention can fill the technical gap in the recycling industry chain where the recycled material proportion cannot be traced, enabling accurate traceability of the recycled material proportion and improving the efficiency of recycling supervision.

Description

Technical Field

[0001] This invention relates to the field of hydrometallurgical technology, and in particular to a method, apparatus, equipment and storage medium for accounting and tracing recycled materials based on RMS. Background Technology

[0002] The recycling of waste batteries involves first disassembling the batteries into modules and individual cells, then crushing and screening them to obtain black powder. Then, hydrometallurgical processes are used to leach the black powder to remove impurities and extract it to obtain a qualified extraction solution. The qualified extraction solution is then alkalized and precipitated to obtain a precursor. Finally, the precursor is mixed with lithium salt, calcined, and demagnetized to obtain recycled cathode material.

[0003] Under the influence of the Battery Law, requirements for battery passports, the proportion of recycled materials, and carbon footprint have all been standardized. Currently, the production of recycled cathode materials mostly adopts systematic management for traceability, while the wet processing and pretreatment stages mostly rely on manual ledgers. However, there is no clear accounting method for recycled materials. How to scientifically calculate the proportion of recycled materials in battery materials has become a critical technical issue that needs to be addressed for lithium battery exports, one of the "new three essentials." Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by proposing a method, apparatus, equipment, and storage medium for the accounting and traceability of recycled materials based on RMS. This invention can fill the technological gap in the recycling industry chain where the proportion of recycled materials cannot be traced, enabling accurate traceability of the proportion of recycled materials and improving the efficiency of recycling supervision.

[0005] In a first aspect, the present invention provides a method for accounting and tracing recycled materials based on RMS, including:

[0006] Recycled cathode materials are recovered from waste batteries, and process parameters on the recycled cathode material production line are collected. The process parameters include: the first mass of the elements of the waste battery in the mixed precursor, the second mass in the recycled cathode material, the first proportion of recycled material in the purchased precursor, the purchase rate in the mixed precursor, the second proportion of recycled material in the purchased crude salt, and the third proportion of purchased metal salt used in the production of the precursor.

[0007] The recycled material ratio of the element is obtained based on the nonlinear relationship between the first mass, the first proportion, the external purchase rate, the second proportion, the third proportion, and the second mass.

[0008] This invention involves collecting process parameters during the recycling of cathode materials and obtaining the proportion of recycled elements based on the nonlinear relationship of these parameters. This fills the technological gap in the recycling industry chain where the proportion of recycled materials cannot be traced. Furthermore, by using the nonlinear relationship of the process parameters, the proportion of recycled materials can be accurately traced, thereby improving the efficiency of recycling supervision.

[0009] In conjunction with the first aspect, in one possible implementation, obtaining the recycled material ratio of the element based on the nonlinear relationship between the first mass, the first proportion, the external purchase rate, the second proportion, the third proportion, and the second mass includes:

[0010] Based on the second proportion, the third proportion, the external purchase rate, and the first proportion, the first recycled material proportion of the element in the mixed precursor is obtained, and based on the first recycled material proportion, the first mass, and the second mass, the second recycled material proportion of the element in the recycled cathode material is obtained; wherein, the element i is any one of nickel, cobalt, manganese, iron, lithium, and phosphorus;

[0011] Preferably, the proportion of the first recycled material can be expressed as:

[0012] R Ci =(R Mi *y i +(1-y i ))*(1-x i )+R wi *x i ,

[0013] Among them, R Ci R represents the percentage of the first recycled material containing element i (which is nickel, cobalt, manganese, iron, lithium, or phosphorus); Mi y i x i and R wi These represent the second, third, external purchase rate, and first proportion of element i, respectively.

[0014] This invention employs a process of recycling and regenerating cathode materials from waste batteries, collecting process parameters, and using the nonlinear relationship of these parameters to accurately trace the proportion of recycled materials, thereby improving recycling supervision efficiency.

[0015] The percentage of the second recycled material in the recycled cathode material obtained by acquiring the element can be expressed as follows:

[0016]

[0017] Among them, R Di The percentage of the second recycled material containing element i (which is nickel, cobalt, manganese, iron, lithium, or phosphorus); C i Let D be the first mass of element i in the mixed precursor; i Let i be the second mass of element i in the recycled cathode material; (R Mi *y i +(1-y i ))*(1-x i )+Rwi *x i It is the proportion of element i in the first recycled material in the mixed precursor.

[0018] In conjunction with the first aspect, in one possible implementation, in addition to obtaining the recycled material ratio of the element based on the nonlinear relationship between the first mass, the first proportion, the external purchase rate, the second proportion, and the third proportion and the second mass, the method further includes: obtaining the third recycled material ratio of the element among the recycled material types in the mixed precursor based on the source of the recycled material in the waste battery and process material, and obtaining the fourth recycled material ratio of the element among the recycled material types based on the third recycled material ratio;

[0019] Preferably, the proportion of the third recycled material can be expressed as:

[0020] R Cij =[R Mij *y ij +R Bij *(1-y ij )]*(1-x i )+R wij *x i ,

[0021] Among them, R Cij R represents the percentage of element i (which is nickel, cobalt, manganese, iron, lithium, or phosphorus) in the third recycled material type j of the mixed precursor. The sources of the recycled material type include: the waste batteries and the process materials; Mij It is the fourth proportion of recycled material type j in which element i is present in at least one of the purchased crude salt and black powder, y ij R is the fifth proportion of at least one of the purchased crude salt and black powder used in the production of the precursor of element i. Bij It is the sixth proportion of element i in recycled material type j in self-produced black powder, x i R is the external purchase rate of element i in the mixed precursor. wij It represents the seventh percentage of element i in recycled material type j among purchased precursors.

[0022] In conjunction with the first aspect, in one possible implementation, the proportion of the fourth recycled material can be expressed as:

[0023]

[0024] Among them, R Dij C represents the proportion of element i (which is nickel, cobalt, manganese, iron, lithium, or phosphorus) in the fourth recycled material of recycled material type j in the recycled cathode material. i Let D be the first mass of element i in the mixed precursor. iIt is the second mass of element i in the recycled cathode material; [R] Mij *y ij +R Bij *(1-y ij )]*(1-x i )+R wij *x i The percentage of element i in the third recycled material type j of the mixed precursor.

[0025] In conjunction with the first aspect, in one possible implementation, after recovering the recycled cathode material from the waste battery, the method further includes: tracing the recycled material based on the Battery Through Toll Collection (BTB); wherein, the staged tracing of the recycled material based on the BTB includes:

[0026] The recycled material is coded and traced according to the operations before the leaching process based on the RMS process, traced according to the time period of the leaching process, and traced according to the batch after the leaching process.

[0027] This invention employs a BTB traceability method based on barcode traceability, time period traceability, and batch traceability. It can trace the recycled material percentage after extracting it from RMS and then use different traceability methods to trace the recycled material in stages, filling the technical gap in recycled material traceability and accurately tracing the recycled material percentage, thereby improving the efficiency of recycling supervision.

[0028] In conjunction with the first aspect, in one possible implementation, the recycling of the regenerated cathode material from waste batteries includes:

[0029] Extract the leachate from the waste battery, add a purchased metal salt when extracting the precursor from the leachate, and add a purchased crude salt when extracting lithium salt from the leachate;

[0030] The extracted precursor and lithium salt are mixed with purchased precursor and purchased refined salt to prepare a mixture, and the cathode material is recycled based on the mixture.

[0031] This invention utilizes the recycling of cathode materials from waste batteries. The recycling process is based on the Recovered Material Standard (RMS) and traces the recycled materials based on the RMS. Therefore, it can be universally applied to the recycling of cathode materials from waste batteries, and has high applicability and practicality.

[0032] In conjunction with the first aspect, in one possible implementation, the addition of a purchased metal salt during the extraction of the precursor from the leachate includes:

[0033] The leachate is extracted, and the qualified extract is added to the ingredients to make a formulation solution. The purchased metal salt is added to the formulation solution to react and extract the precursor.

[0034] In conjunction with the first aspect, in one possible implementation, the purchased crude salt is lithium-containing crude salt, and the purchased refined salt is lithium-containing refined salt.

[0035] Secondly, the present invention provides an RMS-based device for calculating and tracing recycled materials, comprising: a data acquisition unit and a recycled material proportion traceability unit; wherein,

[0036] The data acquisition unit is used to recover recycled cathode materials from waste batteries and collect process parameters on the recycled cathode material production line; wherein, the process parameters include: the first mass of the elements of the waste battery in the mixed precursor, the second mass in the recycled cathode material, the first proportion of recycled material in the purchased precursor, the external purchase rate in the mixed precursor, the second proportion of recycled material in the purchased crude salt, and the third proportion of purchased metal salt used in the production of the precursor;

[0037] The recycled material proportion traceability unit is used to obtain the recycled material proportion of the element based on the nonlinear relationship between the first mass, the first proportion, the external purchase rate, the second proportion, the third proportion, and the second mass.

[0038] Thirdly, the present invention provides an electronic device, one or more processors, and a memory having one or more programs stored thereon, which, when executed by the one or more processors, cause the one or more processors to perform the steps of the RMS-based recycled material accounting and traceability method as described in the first aspect.

[0039] When the present invention integrates the RMS-based recycling accounting and traceability method described in the first aspect onto an electronic device, it can perform rapid on-site traceability of the proportion of recycled materials and feedback on the on-site traceability of the proportion of recycled materials through various electronic devices, thus having greater scalability.

[0040] Fourthly, the present invention provides a readable computer storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the RMS-based recycled material accounting and traceability method as described in the first aspect.

[0041] When the RMS-based recycling accounting and traceability described in the first aspect is stored in a storage medium in the form of a program, the present invention can perform operations such as rapid traceability of the proportion of recycled materials by running or reading the executable program in the storage medium. It is applicable to more operating systems and different application platforms and has stronger scalability. Attached Figure Description

[0042] Figure 1 This is a flowchart illustrating an RMS-based method for calculating and tracing recycled materials, as provided in an embodiment of this application.

[0043] Figure 2 This is a process flow diagram of the RMS-based method for accounting and tracing recycled materials provided in the embodiments of this application;

[0044] Figure 3 This is a schematic diagram of the structure of a recycling material accounting and traceability device based on RMS provided in an embodiment of this application;

[0045] Figure 4 This is a schematic diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] It is worth noting that existing technologies do not trace the proportion of recycled materials in waste batteries. Furthermore, tracing the proportion of recycled materials in waste batteries becomes even more complex when purchased metal salts and crude salts are added. Therefore, this invention provides a method, apparatus, equipment, and storage medium for calculating and tracing recycled materials based on RMS (Recycled Material Management System). This method primarily uses process parameters collected from the production line that recycles cathode materials from waste batteries. Based on the non-linear relationship between process parameters and the proportion of recycled materials, it accurately calculates the proportion of recycled elements in waste batteries, thereby filling the technological gap in the recycling industry chain where the proportion of recycled materials cannot be traced. This allows for precise traceability of the proportion of recycled materials, improving the efficiency of recycling supervision. To better illustrate the technical solution of this invention, specific examples will be provided below.

[0048] Example 1

[0049] See Figure 1 This is a flowchart illustrating an RMS-based method for accounting and tracing recycled materials, provided in an embodiment of this application. The flowchart includes steps S11 to S12, specifically:

[0050] Step S11: Recycle the recycled cathode material from the waste battery and collect the process parameters on the recycled cathode material production line; wherein, the process parameters include: the first mass of the elements of the waste battery in the mixed precursor, the second mass in the recycled cathode material, the first proportion of recycled material in the purchased precursor, the external purchase rate in the precursor, the second proportion of recycled material in the purchased crude salt, and the third proportion of purchased metal salt used in the production of the precursor.

[0051] It is worth noting that the first mass is the mass of elements from waste batteries in the mixed precursor; the second mass is the mass of elements from waste batteries in the recycled cathode material; the first percentage is the percentage of elements from waste batteries in the recycled material in the purchased precursor; the second percentage is the percentage of elements from waste batteries in the recycled material in the purchased coarse salt; and the third percentage is the percentage of elements from waste batteries in the use of purchased metal salts when producing the precursor.

[0052] In some embodiments of this application, after recovering the recycled cathode material from the waste battery, the method further includes: tracing the recycled material based on BTB; wherein, the staged tracing of the recycled material based on BTB includes: encoding the recycled material for tracing according to the operations before the leaching process based on the RMS process, tracing the recycled material for tracing according to the leaching process using time periods, and tracing the recycled material for tracing according to the leaching process after the leaching process using batches.

[0053] This invention employs a BTB traceability method based on barcode traceability, time period traceability, and batch traceability. It can trace the recycled material percentage after extracting it from RMS and then use different traceability methods to trace the recycled material in stages, filling the technical gap in recycled material traceability and accurately tracing the recycled material percentage, thereby improving the efficiency of recycling supervision.

[0054] In some embodiments of this application, the recovery of recycled cathode materials from waste batteries includes: extracting leachate from the waste batteries; adding purchased metal salts when extracting precursors from the leachate; adding purchased crude salts when extracting lithium salts from the leachate; mixing the extracted precursors and lithium salts with purchased precursors and purchased refined salts to obtain a mixture; and recovering recycled cathode materials from the mixture.

[0055] In some embodiments of this application, when extracting the precursor from the leachate, a purchased metal salt is added, including: extracting the leachate, adding the qualified extract to the ingredients to prepare a formulation solution, adding the purchased metal salt to the formulation solution to react, and extracting the precursor.

[0056] In some embodiments of this application, the purchased metal salt is at least one of purchased nickel salt, purchased cobalt salt, purchased manganese salt, purchased iron salt, and purchased phosphate salt.

[0057] In some embodiments of this application, the process of recycling and regenerating cathode materials is described in [reference needed]. Figure 2 This is a process flow diagram of the RMS-based recycling material accounting and traceability method provided in this application embodiment. In the diagram, based on the Recovered Material Standard (RMS), cathode materials are recycled from waste batteries and process materials. Specifically, first, the modules of waste batteries are obtained, then the modules are disassembled to obtain individual battery cells. This process is before the leaching process, and coded traceability is used to trace the recycled materials. The battery cells and process materials are discharged, pyrolyzed, and crushed to screen out battery black powder. The battery black powder is then oxidized and leached to extract the leachate.

[0058] exist Figure 2 In this process, during the extraction of precursors from the leaching solution, the qualified extract is added to the batching solution to prepare a batching solution. Purchased nickel-cobalt salts are added to the batching solution to react and obtain the precursors. During this leaching process, the recycled material is traced over time. The extracted lithium salts and precursors are mixed, and purchased refined salts and other purchased precursors are added to obtain a mixture. Based on the reaction of this mixture, an NCM ternary recycled cathode material composed of nickel (Ni), cobalt (Co), manganese (Mn), and lithium (Li) is prepared. The recycled material is batch-traceable based on the mixture.

[0059] exist Figure 2 In this process, lithium salt and precursor can be extracted separately from the leachate. When extracting lithium salt from the leachate, the leachate is extracted to obtain a raffinate; the raffinate is then subjected to a causticizing reaction to generate a causticizing solution; and commercially available crude salt is added to the causticizing solution to fully extract the lithium salt from it.

[0060] It is worth noting that purchased lithium salts include both refined and crude salts. Crude salt is added during lithium extraction, while refined salt is added during calcination. Figure 2 The purchased metal salts in the product include purchased nickel-cobalt salts.

[0061] It is worth noting that during the extraction of lithium salt and NCM regenerated cathode material from the causticizing solution and the mixture, respectively, the degraded lithium compounds are directly repaired using purchased lithium salt to restore their electrochemical performance. The restored compounds can then be reused as recycled materials. Similarly, purchased nickel-cobalt salt is added to the feed solution, and purchased precursors are added to the mixture. After producing regenerated cathode material based on RMS, the proportion of recycled materials for each element in the waste batteries can be traced from the regenerated cathode material. This includes recycled materials from the waste batteries, as well as recycled materials from purchased lithium salt, purchased nickel-cobalt salt, and purchased precursors. This allows for precise traceability of the entire RMS-based process and the proportion of recycled materials for each element.

[0062] In some embodiments of this application, the following are employed: Figure 2 The process of RMS recycles and regenerates NCM ternary regenerated cathode materials, or adopts... Figure 2 The process of RMS recycles and regenerates NCA ternary recycled cathode materials composed of nickel, cobalt, aluminum (Al) and lithium to obtain the proportion of recycled materials in NCM ternary recycled cathode materials or NCA ternary recycled cathode materials.

[0063] This invention utilizes RMS-based recycling of regenerated cathode materials from waste batteries and traces the recycled materials based on RMS. Therefore, it can be universally applied to extracting regenerated cathode materials from waste batteries, exhibiting high applicability and practicality.

[0064] Step S12: Obtain the recycled material ratio of the element based on the nonlinear relationship between the first mass, the first proportion, the external purchase rate, the second proportion, the third proportion, and the second mass.

[0065] In some embodiments of this application, the element is any one of nickel, cobalt, manganese, iron, lithium, and phosphorus.

[0066] In some embodiments of this application, obtaining the recycled material ratio of the element based on the nonlinear relationship between the first mass, the first proportion, the external purchase rate, the second proportion, and the third proportion and the second mass includes: obtaining the first recycled material ratio of the element in the mixed precursor based on the second proportion, the third proportion, the external purchase rate, and the first proportion, and obtaining the second recycled material ratio of the element in the recycled cathode material based on the first recycled material ratio, the first mass, and the second mass; wherein the element is any one of nickel, cobalt, manganese, iron, lithium, and phosphorus.

[0067] In some embodiments of this application, the proportion of the first recycled material can be expressed as:

[0068] R Ci =(R Mi *y i +(1-y i ))*(1-x i )+R wi *x i ,

[0069] Among them, R Ci R represents the percentage of the first recycled material containing element i (which is nickel, cobalt, manganese, iron, lithium, or phosphorus); Mi y i x i and R wi These represent the second, third, external purchase rate, and first proportion of element i, respectively.

[0070] In some embodiments of this application, the proportion of the element in the second recycled material in the recycled cathode material can be expressed as:

[0071]

[0072] Among them, R Di The percentage of the second recycled material containing element i (which is nickel, cobalt, manganese, iron, lithium, or phosphorus); C i Let D be the first mass of element i in the mixed precursor; i Let i be the second mass of element i in the recycled cathode material; (R Mi *y i +(1-y i ))*(1-x i )+R wi *x i It is the proportion of element i in the first recycled material in the mixed precursor.

[0073] In some embodiments of this application, when obtaining the proportion of the second recycled material, the nickel-containing recycled raw materials include at least one of the following: nickel-containing battery waste, pure nickel waste, nickel alloy waste, waste nickel powder, nickel salt waste, nickel sludge, nickel-containing catalyst waste, and nickel-containing ash slag.

[0074] In some embodiments of this application, when obtaining the proportion of the second recycled material, the cobalt-containing recycled raw materials include at least one of the following: cobalt-containing battery waste, pure cobalt waste, cobalt alloy waste, cobalt salt waste, cobalt-containing catalyst waste, and cobalt slag waste.

[0075] In some embodiments of this application, when obtaining the proportion of the second recycled material, the lithium-containing recycled raw materials include: ① lithium-ion battery waste, which includes at least one of the following lithium-ion waste batteries and lithium battery recycled cathode material waste such as lithium cobalt oxide, lithium nickel cobalt manganese oxide, lithium iron phosphate, lithium manganese oxide, lithium nickel cobalt aluminum oxide, and lithium nickel oxide generated during the lithium battery production process, as well as at least one of the following electrolyte materials such as lithium hexafluorophosphate and anode material waste such as lithium titanate; ② lithium salt waste, which includes at least one of the following lithium salt waste: lithium carbonate, lithium hydroxide monohydrate, lithium bromide, lithium fluoride, lithium chloride, and lithium metal; ③ other lithium-ion waste, including at least one of the following lithium-ion slag and lithium-ion alloys remaining during the ore smelting process.

[0076] In some embodiments of this application, when obtaining the proportion of the second recycled material, the manganese-containing recycled raw materials include at least one of the following: manganese-containing battery waste, manganese alloy waste, manganese salt waste, nickel mud, manganese ore slag, manganese oxide slag, and chemical manganese mud.

[0077] In some embodiments of this application, when obtaining the proportion of the second recycled material, the phosphorus-containing recycled raw materials include at least one of the following: phosphorus-containing battery waste, phosphate salt waste, phosphogypsum, phosphate tailings, phosphate fertilizer slag, phosphate slag, and phosphate mud.

[0078] In some embodiments of this application, when obtaining the proportion of the second recycled material, the iron-containing recycled raw materials include at least one of the following: iron-containing battery waste, pure iron waste, iron salt waste, automobile dismantling materials, alloy steel waste, and cast iron waste.

[0079] In some embodiments of this application, in addition to obtaining the recycled material ratio of the element based on the nonlinear relationship between the first mass, the first proportion, the external purchase rate, the second proportion, the third proportion, and the second mass, the method further includes: obtaining the third recycled material ratio of the element in the recycled material types in the mixed precursor based on the source of the recycled material in the waste battery and process material, and obtaining the fourth recycled material ratio of the element in the recycled material types based on the third recycled material ratio.

[0080] In some embodiments of this application, the proportion of the third recycled material can be expressed as:

[0081] R Cij =[R Mij *y ij +R Bij *(1-y ij )]*(1-x i )+R wij *x i ,

[0082] Among them, R Cij R represents the percentage of element i (which is nickel, cobalt, manganese, iron, lithium, or phosphorus) in the third recycled material type j of the mixed precursor. The sources of the recycled material type include: the waste batteries and the process materials; Mij It is the fourth proportion of recycled material type j in which element i is present in at least one of the purchased crude salt and black powder, y ij R is the fifth proportion of at least one of the purchased crude salt and black powder used in the production of the precursor of element i. Bij It is the sixth proportion of element i in recycled material type j in self-produced black powder, x i R is the external purchase rate of element i in the mixed precursor. wij It represents the seventh percentage of element i in recycled material type j among purchased precursors.

[0083] In some embodiments of this application, the proportion of the fourth recycled material among the recycled material types in the recycled cathode material obtained by the element can be expressed as follows:

[0084]

[0085] Among them, R Dij C represents the proportion of element i (which is nickel, cobalt, manganese, iron, lithium, or phosphorus) in the fourth recycled material of recycled material type j in the recycled cathode material.i Let D be the first mass of element i in the mixed precursor. i It is the second mass of element i in the recycled cathode material; [R] Mij *y ij +R Bij *(1-y ij )]*(1-x i )+R wij *x i The percentage of element i in the third recycled material type j of the mixed precursor.

[0086] It is worth noting that the sources of recycled materials include the waste batteries and the process materials, and the specific source of recycled materials in the waste batteries is the post-consumer waste of the batteries.

[0087] In some embodiments of this application, when obtaining the proportion of the fourth recycled material, the nickel-containing recycled raw materials include: nickel-containing process materials and nickel-containing post-consumer waste; wherein, the nickel-containing process materials include at least one of the following: nickel battery production process waste, pure nickel waste, nickel alloy production process waste, waste nickel powder, nickel salt waste, nickel sludge, nickel catalyst waste, and nickel ash slag; the nickel-containing post-consumer waste includes at least one of the following: nickel battery post-consumer waste and nickel alloy post-consumer waste.

[0088] In some embodiments of this application, when obtaining the percentage of the fourth recycled material, the cobalt-containing recycled raw materials include: cobalt-containing process materials and cobalt-containing post-consumption waste; wherein, the cobalt-containing process materials include at least one of the following: cobalt battery production process waste, pure cobalt production process waste, cobalt alloy waste, cobalt salt waste, cobalt catalyst production process waste, and cobalt slag waste; the cobalt-containing post-consumption waste includes at least one of the following: cobalt battery post-consumption waste, cobalt alloy post-consumption waste, and cobalt catalyst post-consumption waste.

[0089] In some embodiments of this application, when obtaining the percentage of the fourth recycled material, the lithium-containing recycled raw materials include: lithium-containing process materials and lithium-containing post-consumer waste materials; wherein, the lithium-containing process materials include: ① lithium-containing battery production process waste and lithium-containing waste batteries, and at least one of the lithium battery positive electrode material wastes such as lithium cobalt oxide, lithium nickel cobalt manganese oxide, lithium iron phosphate, lithium manganese oxide, lithium nickel cobalt aluminum oxide, and lithium nickel oxide generated during the lithium battery production process, and at least one of the electrolyte materials such as lithium hexafluorophosphate or the negative electrode material wastes such as lithium titanate; ② lithium salt waste, lithium carbonate, At least one of the following waste materials: lithium hydroxide monohydrate, lithium bromide, lithium fluoride, lithium chloride, and lithium metal; ③ Other lithium-containing waste materials, including at least one of the following: lithium-containing slag and lithium-containing alloys remaining from ore smelting; Post-consumption lithium-containing waste materials include: ① Post-consumption lithium battery waste materials, including at least one of the following lithium battery cathode material waste materials: lithium cobalt oxide, lithium nickel cobalt manganese oxide, lithium iron phosphate, lithium manganese oxide, lithium nickel cobalt aluminum oxide, or lithium nickel oxide; at least one of the following electrolyte materials: lithium hexafluorophosphate; and at least one of the following anode material waste materials: lithium titanate.

[0090] In some embodiments of this application, when obtaining the proportion of the fourth recycled material, the manganese-containing recycled raw materials include: manganese-containing process materials and manganese-containing post-consumer waste; wherein, the manganese-containing process materials include at least one of the following: manganese-containing battery production process waste, manganese alloy production process waste, manganese salt waste, nickel mud, manganese ore slag, manganese oxide slag, and chemical manganese mud; the manganese-containing post-consumer waste includes at least one of manganese-containing battery post-consumer waste and manganese alloy post-consumer waste.

[0091] In some embodiments of this application, when obtaining the proportion of the fourth recycled material, the phosphorus-containing recycled raw materials include: phosphorus-containing process materials and phosphorus-containing post-consumer waste; wherein, the phosphorus-containing process materials include at least one of phosphorus-containing battery production process waste, phosphate salt waste, phosphogypsum, phosphate tailings, phosphate fertilizer slag, phosphate slag, and phosphate mud; the phosphorus-containing post-consumer waste includes: phosphorus-containing battery post-consumer waste.

[0092] In some embodiments of this application, when obtaining the proportion of the fourth recycled material, the iron-containing recycled raw materials include: iron-containing process materials and iron-containing post-consumer waste; wherein, the iron-containing process materials include at least one of the following: iron-containing battery production process waste, pure iron waste, iron salt waste, automobile production process dismantling materials, alloy steel production process waste, and cast iron production process waste; the iron-containing post-consumer waste includes at least one of the following: iron-containing battery post-consumer waste, scrapped automobile dismantling materials, alloy steel post-consumer waste, and cast iron post-consumer waste.

[0093] It is worth noting that, where there is no conflict, the embodiments of this application can be combined with each other.

[0094] It is worth noting that the fourth percentage refers to the proportion of a specific element in the purchased coarse salt or / and black powder from waste batteries or process materials; the fifth percentage refers to the proportion of a specific element in the production of precursors from purchased coarse salt or / and black powder; the sixth percentage refers to the proportion of a specific element in the self-produced black powder from waste batteries or process materials; and the seventh percentage refers to the proportion of an element in the purchased precursors from waste batteries or process materials. The process parameters also include the fourth, fifth, sixth, and seventh percentages.

[0095] The second recycled material percentage is calculated based on a non-linear relationship that does not distinguish the source of recycled materials, while the fourth recycled material percentage is calculated based on a non-linear relationship that distinguishes the source of recycled materials, thus being accurate to the source of recycled materials and the percentage of recycled materials in different sources.

[0096] This invention collects process parameters during the recycling of cathode materials. By leveraging the nonlinear relationship between these parameters, the proportion of recycled materials can be accurately traced, thereby improving recycling supervision efficiency.

[0097] In some embodiments of this application, when tracing the proportion of recycled materials in lithium nickel cobalt manganese oxide ternary batteries, if the supplier's recycled material proportion data and supporting materials are not received, the content of the aforementioned metal salt recycled materials is taken as 0. In this case, i∈{Ni,Co,Li,Mn}, the second recycled material proportion of the NCM ternary recycled cathode material can be calculated as follows:

[0098] When i = Ni, the proportion of Ni in the second recycled material is:

[0099]

[0100] When i = Co, the proportion of Co in the second recycled material is:

[0101]

[0102] When i = Li, the proportion of Li in the second recycled material is:

[0103]

[0104] When i = Mn, the proportion of the second recycled material of the Mn element is:

[0105]

[0106] As can be seen, the proportion of the second recycled material in the NCM ternary recycled cathode material can be accurately obtained through the above tracing method, as shown in Table 1 below.

[0107] Table 1. Proportion of Second Recycled Material in NCM Ternary Recycled Cathode Material

[0108] i element Recycled material ratio Ni 29.4％ Co 68.2％ Li 100％ Mn 84.3％

[0109] In one embodiment of this application, when tracing the proportion of recycled materials in a lithium nickel cobalt aluminum oxide ternary lithium battery, where i∈{Ni,Co,Li,Al}, the proportion of recycled materials in the NCA ternary recycled cathode material can be calculated as follows:

[0110] When i = Ni, the proportion of Ni in the second recycled material is:

[0111]

[0112] When i = Co, the proportion of Co in the second recycled material is:

[0113]

[0114] When i = Li, the proportion of Li in the second recycled material is:

[0115]

[0116] When i = Al, the proportion of Al in the second recycled material is:

[0117]

[0118] In one embodiment of this application, when tracing the proportion of recycled materials in a lithium nickel cobalt manganese oxide ternary battery, where i∈{Ni,Co,Li,Mn}, the proportion of the fourth recycled material in the NCM ternary recycled cathode material can be calculated as follows:

[0119] When i = Ni and j = waste battery (Wb), the proportion of Ni in the fourth recycled material of the waste battery is:

[0120]

[0121] When i = Co and j = waste battery, the proportion of Co in the fourth recycled material of the waste battery is:

[0122]

[0123] When i = Li and j = waste battery, the proportion of Li in the fourth recycled material of the waste battery is:

[0124]

[0125] When i = Mn and j = waste battery, the proportion of Mn in the fourth recycled material of the waste battery is:

[0126]

[0127] Among them, Wb refers to waste batteries.

[0128] In one embodiment of this application, when tracing the proportion of recycled materials in a lithium nickel cobalt manganese oxide ternary battery, where i∈{Ni,Co,Li,Mn}, the proportion of the fourth recycled material in the NCM ternary recycled cathode material can be calculated as follows:

[0129] When i = Ni and j = process materials (Pm), the proportion of Ni in the fourth recycled material of the process materials is:

[0130]

[0131] When i = Co and j = waste battery, the proportion of Co in the fourth recycled material in the process feed is:

[0132]

[0133] When i = Li and j = waste battery, the proportion of Li in the fourth recycled material in the process material is:

[0134]

[0135] When i = Mn and j = waste battery, the proportion of Mn in the fourth recycled material in the process material is:

[0136]

[0137] Wherein, Pm represents process material.

[0138] In one embodiment of this application, when tracing the proportion of recycled materials in a lithium nickel cobalt aluminum oxide ternary battery, where i∈{Ni,Co,Li,Al}, the proportion of the fourth recycled material in the NCA ternary recycled cathode material can be calculated as follows:

[0139] When i = Ni and j = waste battery, the proportion of Ni element in the fourth recycled material of waste battery is:

[0140]

[0141] When i = Co and j = waste battery, the proportion of Co in the fourth recycled material of the waste battery is:

[0142]

[0143] When i = Li and j = waste battery, the proportion of Li in the fourth recycled material of the waste battery is:

[0144]

[0145] When i = Al and j = waste battery, the proportion of Al in the fourth recycled material of the waste battery is:

[0146]

[0147] Among them, Wb refers to waste batteries.

[0148] In one embodiment of this application, when tracing the proportion of recycled materials in a lithium nickel cobalt manganese oxide ternary battery, where i∈{Ni,Co,Li,Al}, the proportion of the fourth recycled material in the NCM ternary recycled cathode material can be calculated as follows:

[0149] When i = Ni and j = process materials (Pm), the proportion of Ni in the fourth recycled material of the process materials is:

[0150]

[0151] When i = Co and j = waste battery, the proportion of Co in the fourth recycled material in the process feed is:

[0152]

[0153] When i = Li and j = waste battery, the proportion of Li in the fourth recycled material in the process material is:

[0154]

[0155] When i = Al and j = waste battery, the proportion of Al in the fourth recycled material in the process material is:

[0156]

[0157] Wherein, Pm represents process material.

[0158] This invention involves collecting process parameters during the production of recycled cathode materials and obtaining the proportion of recycled elements based on the nonlinear relationship of these parameters. This fills the technological gap in the recycling industry chain where the proportion of recycled materials cannot be traced. Furthermore, by using the nonlinear relationship of the process parameters, the proportion of recycled materials can be accurately traced, thereby improving the efficiency of recycling supervision.

[0159] Example 2

[0160] See Figure 3 This is a schematic diagram of a RMS-based recycled material accounting and traceability device provided in this application embodiment, including: a data acquisition unit 21 and a recycled material proportion traceability unit 22.

[0161] The data acquisition unit 21 is used to recover recycled cathode materials from waste batteries and collect process parameters on the recycled cathode material production line; wherein, the process parameters include: the first mass of the elements of the waste battery in the mixed precursor, the second mass in the recycled cathode material, the first proportion of recycled material in the purchased precursor, the external purchase rate in the precursor, the second proportion of recycled material in the purchased crude salt, and the third proportion of purchased metal salt used in the production of the precursor.

[0162] In some embodiments of this application, after recovering the recycled cathode material from the waste battery, the method further includes: tracing the recycled material based on BTB; wherein, the staged tracing of the recycled material based on BTB includes: encoding the recycled material for tracing according to the operations before the leaching process based on the RMS process, tracing the recycled material for tracing according to the leaching process using time periods, and tracing the recycled material for tracing according to the leaching process after the leaching process using batches.

[0163] This invention employs a BTB traceability method based on barcode traceability, time period traceability, and batch traceability. It can trace the recycled material percentage after extracting it from RMS and then use different traceability methods to trace the recycled material in stages, filling the technical gap in recycled material traceability and accurately tracing the recycled material percentage, thereby improving the efficiency of recycling supervision.

[0164] In some embodiments of this application, the recovery of recycled cathode materials from waste batteries includes: extracting leachate from the waste batteries; adding purchased metal salts when extracting precursors from the leachate; adding purchased crude salts when extracting lithium salts from the leachate; mixing the extracted precursors and lithium salts with purchased precursors and purchased refined salts to obtain a mixture; and recovering recycled cathode materials from the mixture.

[0165] In some embodiments of this application, when extracting the precursor from the leachate, a purchased metal salt is added, including: extracting the leachate, adding the qualified extract to a batching solution to prepare a batching solution, adding the purchased metal salt to the batching solution to react, and extracting the precursor. In some embodiments of this application, the crude salt is a lithium salt, and the purchased metal salt is a purchased nickel-cobalt salt.

[0166] In some embodiments of this application, the purchased metal salt is at least one of purchased nickel salt, purchased cobalt salt, purchased manganese salt, purchased iron salt, and purchased phosphate salt.

[0167] In some embodiments of this application, the purchased crude salt is lithium-containing crude salt, and the purchased refined salt is lithium-containing refined salt.

[0168] The recycled material proportion traceability unit 22 is used to obtain the recycled material proportion of the element based on the nonlinear relationship between the first mass, the first proportion, the external purchase rate, the second proportion, the third proportion, and the second mass.

[0169] In some embodiments of this application, element i is any one of nickel, cobalt, manganese, iron, lithium, and phosphorus.

[0170] In some embodiments of this application, the proportion of element i in the first recycled material in the mixed precursor can be expressed as:

[0171] R Ci =(R Mi *y i +(1-y i ))*(1-x i )+R wi *x i ,

[0172] Among them, R Ci R represents the percentage of element i (which is nickel, cobalt, manganese, iron, lithium, or phosphorus) in the first recycled material of the mixed precursor. Mi y i x i and R wi These represent the second, third, external purchase rate, and first proportion of element i, respectively.

[0173] In some embodiments of this application, the proportion of the element in the second recycled material in the recycled cathode material can be expressed as:

[0174]

[0175] Among them, R Di C represents the proportion of element i (which is nickel, cobalt, manganese, iron, lithium, or phosphorus) in the second recycled material of the recycled cathode material. i Let D be the first mass of element i in the mixed precursor; i Let i be the second mass of element i in the recycled cathode material; (R Mi *y i +(1-y i ))*(1-x i )+R wi *x i It is the proportion of element i in the first recycled material in the mixed precursor.

[0176] In some embodiments of this application, in addition to obtaining the recycled material ratio of the element based on the nonlinear relationship between the first mass, the first proportion, the external purchase rate, the second proportion, the third proportion, and the second mass, the method further includes: obtaining the third recycled material ratio of the element in the recycled material types in the mixed precursor based on the source of the recycled material in the waste battery and process material, and obtaining the fourth recycled material ratio of the element in the recycled material types based on the third recycled material ratio.

[0177] In some embodiments of this application, the proportion of the third recycled material in recycled material type j of the mixed precursor can be expressed as:

[0178] R Cij =[R Mij *y ij +R Bij *(1-y ij )]*(1-x i )+R wij *x i ,

[0179] Among them, R Cij R represents the percentage of element i (which is nickel, cobalt, manganese, iron, lithium, or phosphorus) in the third recycled material type j of the mixed precursor. The sources of the recycled material type include: the waste batteries and the process materials; Mij It is the fourth proportion of recycled material type j in which element i is present in at least one of the purchased crude salt and black powder, y ij R is the fifth proportion of at least one of the purchased crude salt and black powder used in the production of the precursor of element i. Bij It is the sixth proportion of element i in recycled material type j in self-produced black powder, x i R is the external purchase rate of element i in the mixed precursor. wij It represents the seventh percentage of element i in recycled material type j among purchased precursors.

[0180] In some embodiments of this application, the proportion of the fourth recycled material among the recycled material types of the element can be expressed as:

[0181]

[0182] Among them, R Dij C represents the proportion of element i (which is nickel, cobalt, manganese, iron, lithium, or phosphorus) in the fourth type of recycled material j in the recycled cathode material. i Let D be the first mass of element i. i It is the second mass of element i in the recycled cathode material; [R] Mij *y ij +R Bij *(1-yij )]*(1-x i )+R wij *x i The percentage of element i in the third recycled material type j of the mixed precursor.

[0183] This invention employs a data acquisition unit 21 to collect process parameters during the production line process of extracting recycled cathode materials from waste batteries, and transmits these process parameters to a recycled material proportion traceability unit 22. Upon receiving the process parameters, the recycled material proportion traceability unit 22 substitutes them into a constructed nonlinear relationship to obtain the recycled material proportion of each element. This fills the technical gap in the recycling industry chain where the recycled material proportion cannot be traced, and through the nonlinear relationship of the process parameters, it accurately traces the recycled material proportion, thereby improving the efficiency of recycling supervision.

[0184] Example 3

[0185] See Figure 4 This is a schematic diagram of an electronic device provided in an embodiment of this application. In the figure, the electronic device 31 includes one or more processors 33 and a memory 32. The memory 32 stores one or more computer programs 34. When the one or more computer programs 34 are executed by the one or more processors 33, the one or more processors 33 implement the steps of the RMS-based recycled material accounting and traceability method as described in Embodiment 1.

[0186] It is worth noting that the electronic devices mentioned are not limited to computers, smartphones, tablets, and dedicated intelligent testing instruments.

[0187] By integrating the RMS-based recycled material accounting and traceability method described in Example 1 onto an electronic device, this invention enables rapid on-site traceability of the proportion of recycled materials and feedback of on-site recycled material proportion traceability through various electronic devices, thus exhibiting greater scalability.

[0188] Example 4

[0189] This application provides a readable computer storage medium storing a computer program thereon. When the computer program is executed by a processor, it implements the steps of the RMS-based recycled material accounting and traceability method as described in Embodiment 1.

[0190] It is worth noting that the computer program is not limited to computer programming languages ​​or pseudocode.

[0191] When the RMS-based recycling accounting and traceability described in Example 1 is stored in a storage medium in the form of a program, the present invention can perform operations such as rapid traceability of the proportion of recycled materials by running or reading the executable program in the storage medium. It is applicable to more operating systems and different application platforms and has stronger scalability.

[0192] Those skilled in the art will understand that embodiments of this application may also include computer program products. Therefore, this application may take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0193] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0194] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0195] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0196] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for accounting and tracing recycled materials based on RMS, characterized in that, include: Recycled cathode materials are recovered from waste batteries, and process parameters on the recycled cathode material production line are collected. The process parameters include: the first mass of element i in the mixed precursor of the waste battery, the second mass of element i in the recycled cathode material, the first proportion of recycled material of element i in the purchased precursor, the external purchase rate of element i in the mixed precursor, the second proportion of recycled material of element i in the purchased crude salt, and the third proportion of purchased metal salt used when producing the precursor. The proportion of recycled element i is obtained based on the first mass of element i in the mixed precursor, the first proportion of element i in the recycled cathode material, the external purchase rate of element i in the mixed precursor, the second proportion of recycled element i in the externally purchased crude salt, and the third proportion of externally purchased metal salt used by element i in the production of the precursor, and the nonlinear relationship between these factors and the second mass of element i in the recycled cathode material. The method of obtaining the recycled material ratio of element i based on the nonlinear relationship between the first mass of element i in the mixed precursor, the first proportion of element i in the recycled cathode material, the external purchase rate of element i in the mixed precursor, the second proportion of element i in the recycled material of the externally purchased crude salt, and the third proportion of element i in the externally purchased metal salt used in the production of the precursor and the second mass of element i in the recycled cathode material includes: Based on the second proportion of element i in the recycled material of the purchased crude salt, the third proportion of element i used in the production of the precursor using purchased metal salt, the purchase rate of element i in the mixed precursor, and the first proportion of element i in the recycled cathode material, the first proportion of element i in the recycled material is obtained. Furthermore, based on the first proportion of element i in the mixed precursor, the first mass of element i in the mixed precursor, and the second mass of element i in the recycled cathode material, the second proportion of element i in the recycled cathode material is obtained. Wherein, element i is any one of nickel, cobalt, manganese, iron, lithium, and phosphorus. The proportion of element i in the first recycled material in the mixed precursor is expressed as follows: R Ci =(R Mi *y i +(1-y i ))*(1-x i )+R wi *x i , Among them, R Ci R represents the percentage of element i in the first recycled material in the mixed precursor. Mi y i x i and R wi These are respectively the second proportion of element i in the recycled material of purchased crude salt, the third proportion of element i in the production of precursors using purchased metal salts, the external purchase rate of element i in the mixed precursors, and the first proportion of element i in the recycled cathode material.

2. The method for accounting and tracing recycled materials as described in claim 1, characterized in that, The percentage of element i in the second recycled material in the recycled cathode material is expressed as follows: Among them, R Di C represents the proportion of element i in the second recycled material of the recycled cathode material. i D is the first mass of element i in the mixed precursor; i The second mass of element i in the recycled cathode material; (R) Mi *y i +(1-y i ))*(1-x i )+R wi *x i It is the proportion of element i in the first recycled material in the mixed precursor.

3. The method for accounting and tracing recycled materials as described in claim 1, characterized in that, In addition to obtaining the recycled material percentage of element i based on the nonlinear relationship between the first mass of element i in the mixed precursor, the first proportion of element i in the recycled cathode material, the external purchase rate of element i in the mixed precursor, the second proportion of element i in the recycled material of the externally purchased crude salt, and the third proportion of element i in the externally purchased metal salt used in the production of the precursor and the second mass of element i in the recycled cathode material, the method further includes: obtaining the third recycled material percentage of element i in the recycled material type j in the mixed precursor based on the source of the recycled material in the waste battery and process material, and obtaining the fourth recycled material percentage of element i in the recycled material type j in the recycled cathode material based on the third recycled material percentage of element i in the mixed precursor. The proportion of element i in the third recycled material type j in the mixed precursor is expressed as follows: R Cij =[R Mij *y ij +R Bij *(1-y ij )]*(1-x i )+R wij *x i , Among them, R Cij R represents the proportion of element i in the third recycled material type j within the mixed precursor. The sources of the recycled material type include: the waste batteries and the process materials; Mij It is the fourth proportion of element i in recycled material type j, which contains at least one of the purchased crude salt and black powder, y ij R is the fifth proportion of element i in the production of the precursor using at least one of purchased crude salt and black powder. Bij It is the sixth proportion of element i in recycled material type j in self-produced black powder, x i R is the external purchase rate of element i in the mixed precursor. wij It is the seventh proportion of element i in the recycled material type j of the purchased precursor.

4. The method for accounting and tracing recycled materials as described in claim 3, characterized in that, The proportion of element i in the fourth recycled material type j of the recycled cathode material is expressed as follows: Among them, R Dij C represents the proportion of element i in the fourth type of recycled material j within the recycled cathode material. i D represents the first mass of element i in the mixed precursor. i It is the second mass of element i in the recycled cathode material; [R] Mij *y ij +R Bij *(1-y ij )]*(1-x i )+R wij *x i The percentage of element i in the third recycled material type j of the mixed precursor.

5. The method for accounting and tracing recycled materials as described in claim 1, characterized in that, After recovering the recycled cathode material from the waste battery, the method further includes: tracing the recycled material based on the Battery Through Battery Test (BTB); wherein, the staged tracing of the recycled material based on the BTB includes: The recycled material is coded and traced according to the operations before the leaching process based on the RMS process, traced according to the time period of the leaching process, and traced according to the batch after the leaching process.

6. The method for accounting and tracing recycled materials as described in claim 1, characterized in that, The method of recovering and regenerating cathode materials from waste batteries includes: Extract the leachate from the waste battery, add a purchased metal salt when extracting the precursor from the leachate, and add a purchased crude salt when extracting lithium salt from the leachate; The extracted precursor and lithium salt are mixed with purchased precursor and purchased refined salt to prepare a mixture, and the cathode material is recycled based on the mixture.

7. The method for accounting and tracing recycled materials as described in claim 6, characterized in that, When extracting the precursor from the leachate, the addition of a commercially available metal salt includes: The leachate is extracted, and the qualified extract is added to the ingredients to make a formulation solution. The purchased metal salt is added to the formulation solution to react and extract the precursor.

8. The method for accounting and tracing recycled materials as described in claim 7, characterized in that, The purchased metal salt is at least one of purchased nickel salt, purchased cobalt salt, purchased manganese salt, purchased iron salt, and purchased phosphate salt.

9. The method for accounting and tracing recycled materials as described in claim 8, characterized in that, The purchased crude salt is lithium-containing crude salt, and the purchased refined salt is lithium-containing refined salt.

10. A device for accounting and tracing recycled materials based on RMS, characterized in that, include: Data acquisition unit and recycled material proportion traceability unit; among which, The data acquisition unit is used to recover recycled cathode materials from waste batteries and collect process parameters on the recycled cathode material production line; wherein, the process parameters include: the first mass of element i in the mixed precursor of the waste battery, the second mass of element i in the recycled cathode material, the first proportion of recycled material of element i in the purchased precursor, the external purchase rate of element i in the mixed precursor, the second proportion of recycled material of element i in the purchased crude salt, and the third proportion of element i in the purchased metal salt used when producing the precursor; The recycled material proportion traceability unit is used to obtain the recycled material proportion of element i based on the nonlinear relationship between the first mass of element i in the mixed precursor, the first proportion of recycled material of element i in the purchased precursor, the purchase rate of element i in the mixed precursor, the second proportion of recycled material of element i in the purchased crude salt, and the third proportion of element i in the purchased metal salt used when producing the precursor and the second mass of element i in the recycled cathode material. The method of obtaining the recycled material ratio of element i based on the nonlinear relationship between the first mass of element i in the mixed precursor, the first proportion of element i in the recycled cathode material, the external purchase rate of element i in the mixed precursor, the second proportion of element i in the recycled material of the externally purchased crude salt, and the third proportion of element i in the externally purchased metal salt used in the production of the precursor and the second mass of element i in the recycled cathode material includes: Based on the second proportion of element i in the recycled material of the purchased crude salt, the third proportion of element i used in the production of the precursor using purchased metal salt, the purchase rate of element i in the mixed precursor, and the first proportion of element i in the recycled cathode material, the first proportion of element i in the recycled material is obtained. Furthermore, based on the first proportion of element i in the mixed precursor, the first mass of element i in the mixed precursor, and the second mass of element i in the recycled cathode material, the second proportion of element i in the recycled cathode material is obtained. Wherein, element i is any one of nickel, cobalt, manganese, iron, lithium, and phosphorus. The proportion of element i in the first recycled material in the mixed precursor is expressed as follows: R Ci =(R Mi *y i +(1-y i ))*(1-x i )+R wi *x i , Among them, R Ci R represents the percentage of element i in the first recycled material in the mixed precursor. Mi y i x i and R wi These are respectively the second proportion of element i in the recycled material of purchased crude salt, the third proportion of element i in the production of precursors using purchased metal salts, the external purchase rate of element i in the mixed precursors, and the first proportion of element i in the recycled cathode material.

11. An electronic device, characterized in that, One or more processors; a memory having stored one or more programs that, when executed by the one or more processors, cause the one or more processors to perform the steps of the RMS-based recycling accounting and traceability method as described in any one of claims 1-9.

12. A readable computer storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the RMS-based method for accounting and tracing recycled materials as described in any one of claims 1-9.

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