RMS-based accounting and tracing method and apparatus for recovered material, and device and storage medium

Abstract

Provided in the present invention are an RMS-based accounting and tracing method and apparatus for a recovered material, and a device and a storage medium. The method comprises: recycling a recovered positive electrode material from a waste battery, and collecting process parameters on a recovered positive electrode material production line, wherein the process parameters comprise: a first mass of an element of the waste battery in a mixed precursor, a second mass of the element of the waste battery in the recovered positive electrode material, a first proportion of a recovered material, which is from the element of the waste battery, in an externally purchased precursor, an external purchase rate of the element of the waste battery in a precursor, a second proportion of the recovered material, which is from the element of the waste battery, in externally purchased crude salt, and a third proportion of the element of the waste battery in externally purchased metal salt used in precursor production; and on the basis of a nonlinear relationship between the first mass, the first proportion, the external purchase rate, the second proportion and the third proportion and the second mass, acquiring the proportion of a recovered material of the element. By means of the present invention, the technical gap of it being impossible to trace the proportion of a recovered material in a recycling industry chain can be filled, and the proportion of the recovered material can be precisely traced, thereby improving the recycling supervision efficiency.

Description

Recycled material accounting and traceability method, device, equipment and storage medium based on RMS Technical Field

[0001] The present invention relates to the technical field of hydrometallurgy, and in particular to a recycled material accounting and tracing method, device, equipment and storage medium based on RMS. Background Art

[0002] The recycling of used batteries involves disassembling the batteries into modules and monomers, crushing and screening them to obtain black powder, and then performing hydrometallurgy to leach the black powder, remove impurities, and extract it to obtain a qualified extraction liquid. The qualified extraction liquid is alkalized and precipitated to obtain a precursor, and then the precursor is mixed with lithium salt, calcined, and demagnetized to obtain a regenerated positive electrode material.

[0003] Under the influence of the Battery Law, battery passports, recycled material ratio requirements, and carbon footprint requirements have all been standardized. Currently, recycled cathode material production typically utilizes system-based management to facilitate traceability, while wet processing and pretreatment processes typically rely on manual accounting. However, there is no clear accounting method for recycled materials. Scientifically calculating the recycled material ratio in battery materials has become one of the "new three things" that urgently need to be addressed in lithium battery exports.

[0004] Summary of the Invention

[0005] The purpose of the present invention is to address the deficiencies of the above-mentioned existing technologies and propose a recycled material accounting and traceability method, device, equipment and storage medium based on RMS, which can fill the technical gap in the recycling industry chain that cannot trace the proportion of recycled materials, accurately trace the proportion of recycled materials, and improve the efficiency of recycling supervision.

[0006] In a first aspect, the present invention provides a recycled material accounting and traceability method based on RMS, comprising:

[0007] Recycling recycled positive electrode materials from waste batteries and collecting process parameters on the recycled positive electrode material production line; wherein the process parameters include: a first mass of the elements of the waste batteries in the mixed precursor, a second mass of the recycled positive electrode material in the recycled positive electrode 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;

[0008] The recycled material proportion of the element is obtained according to a nonlinear relationship among the first mass, the first proportion, the outsourcing rate, the second proportion, the third proportion and the second mass.

[0009] The present invention collects process parameters during the process of recycling and regenerating positive electrode materials, and obtains the proportion of recycled materials of elements based on the nonlinear relationship of the process parameters, thereby filling the technical gap in the recycling industry chain that cannot trace the proportion of recycled materials, and accurately traces the proportion of recycled materials through the nonlinear relationship of the process parameters, thereby improving the efficiency of recycling supervision.

[0010] In conjunction with the first aspect, in a possible implementation, obtaining the recycled material proportion of the element according to the nonlinear relationship between the first mass, the first proportion, the outsourcing rate, the second proportion, and the third proportion and the second mass includes:

[0011] Obtaining a first recycled material proportion of the element in the mixed precursor based on the second proportion, the third proportion, the outsourcing rate, and the first proportion, and obtaining a second recycled material proportion of the element in the recycled positive electrode material based on the first recycled material proportion, the first mass, and the second mass; wherein the element is any one of nickel, cobalt, manganese, iron, lithium, or phosphorus;

[0012] Preferably, the first recycled material ratio can be expressed as: R Ci =(R Mi *y i +(1-y i ))*(1-x i )+R wi *x i ,

[0013] Among them, R Ci is the proportion of first recycled materials where element i is nickel, cobalt, manganese, iron, lithium or phosphorus; R Mi 、y i 、x i and R wi They are the second proportion, third proportion, outsourcing rate and first proportion of element i respectively.

[0014] The present invention adopts the process of recycling and regenerating positive electrode materials from waste batteries, collects process parameters, and through the nonlinear relationship of process parameters, can accurately trace the proportion of recycled materials, thereby improving the efficiency of recycling supervision.

[0015] The first recycled material ratio of the element in the recycled positive electrode material can be expressed as:

[0016] Among them, R Di The first recycled material percentage of element i is nickel, cobalt, manganese, iron, lithium or phosphorus; C i is the first mass of element i; D i is the second mass of element i; (R Mi *yi +(1-y i ))*(1-x i )+R wi *x i is the first proportion of recycled materials.

[0017] In conjunction with the first aspect, in one possible implementation, in addition to obtaining the recycled material proportion of the element based on the nonlinear relationship between the first mass, the first proportion, the outsourcing rate, the second proportion, and the third proportion and the second mass, the method further includes: obtaining a third recycled material proportion of the element in the recycled material types in the mixed precursor based on the source of the recycled material in the waste batteries and process materials, and obtaining a fourth recycled material proportion of the element in the recycled material types based on the third recycled material proportion;

[0018] Preferably, the proportion of the third recycled material can be expressed as:

[0019] R Cij =[R Mij *y i +R Bij *(1-y i )]*(1-x i )+R wij *x i ,

[0020] Among them, R Cij The third recycled material proportion of element i being nickel, cobalt, manganese, iron, lithium or phosphorus in the mixed precursor, the sources of the recycled material types including: the waste battery and the process material; R Mij is the fourth proportion of element i in at least one of the recycled materials type j in the purchased crude salt or black powder, y i It is the fifth proportion of at least one of the purchased crude salt or black powder used in the production of precursors of element i, R Bij is the sixth proportion of recycled material type j in self-produced black powder by element i, x i is the outsourcing rate of element i in the precursor, R wij It is the seventh proportion of recycled material type j in purchased precursors of element i.

[0021] In combination with the first aspect, in a possible implementation, the fourth recycled material ratio can be expressed as:

[0022] Among them, R Dij The percentage of the fourth recycled material of recycled material type j where element i is nickel, cobalt, manganese, iron, lithium or phosphorus, C i is the first mass of element i, D i It is the second mass of element i in the regenerated positive electrode material; [RMij *y i +R Bij *(1-y i )]*(1-x i )+R wij *x i is the proportion of the third recycled material.

[0023] In conjunction with the first aspect, in a possible implementation, after the recycled positive electrode material is recovered from the waste battery, the method further includes: tracing the recycled material based on the BTB; wherein the tracing the recycled material in stages based on the BTB includes:

[0024] The recycled material is traced by coding according to the operation before the leaching process based on the RMS process, traced by time period according to the leaching process, and traced by batches according to the recycled material after the leaching process.

[0025] The present invention adopts the BTB traceability method based on barcode traceability, time period traceability and batch traceability. After extracting the proportion of recycled materials based on RMS, it can trace the recycled materials in stages using different traceability methods, filling the technical gap in the traceability of recycled materials, accurately tracing the proportion of recycled materials, and thus improving the efficiency of recycling supervision.

[0026] In combination with the first aspect, in a possible implementation, the recovering of the regenerated positive electrode material from the waste battery includes:

[0027] Extracting the leachate of the waste battery, adding purchased metal salt when extracting the precursor according to the leachate, and adding purchased crude salt when extracting the lithium salt according to the leachate;

[0028] The extracted precursor and lithium salt are mixed with an externally purchased precursor and externally purchased refined salt to prepare a mixture, and the positive electrode material is recovered and regenerated based on the mixture.

[0029] The present invention recycles positive electrode materials from waste batteries. The recycling process is based on the Recovered Material Standard (RMS), and the recycled materials are traced based on the RMS. Therefore, the present invention can be used to recycle positive electrode materials from waste batteries and has high applicability and practicality.

[0030] In combination with the first aspect, in a possible implementation, when extracting the precursor according to the leachate, adding a purchased metal salt includes:

[0031] The leachate is extracted, and the qualified extracted liquid is added to the batching liquid to prepare the batching liquid. The purchased metal salt is added to the batching liquid to react and extract the precursor.

[0032] In combination with the first aspect, in a possible implementation, the purchased crude salt is lithium-containing crude salt, and the purchased refined salt is lithium-containing refined salt.

[0033] In the second aspect, the present invention provides a recycled material accounting and tracing device based on RMS, comprising: a data acquisition unit and a recycled material proportion tracing unit; wherein,

[0034] The data acquisition unit is used to recover recycled positive electrode materials from waste batteries and collect process parameters on the recycled positive electrode material production line; wherein the process parameters include: a first mass of the elements of the waste batteries in the mixed precursor, a second mass of the recycled positive electrode material in the recycled positive electrode 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;

[0035] The recycled material proportion tracing unit is used to obtain the recycled material proportion of the element based on the first mass, the first proportion, the outsourcing rate, the second proportion, and the nonlinear relationship between the third proportion and the second mass.

[0036] In a third aspect, the present invention provides an electronic device, one or more processors; and a memory storing one or more programs, which, when executed by the one or more processors, enables the one or more processors to implement the steps of the RMS-based recycled material accounting and traceability method as described in the first aspect.

[0037] By integrating the RMS-based recycled material accounting and traceability method described in the first aspect into electronic devices, the present invention can quickly trace the proportion of recycled materials on site and provide feedback on the traceability of the proportion of recycled materials on site through various electronic devices, which has stronger scalability.

[0038] In a fourth aspect, the present invention provides a computer-readable 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.

[0039] By storing the RMS-based recycled material accounting and traceability described in the first aspect in a storage medium in the form of a program, the present invention can quickly trace 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] FIG1 is a flow chart of a recycled material accounting and traceability method based on RMS provided in an embodiment of the present application;

[0041] FIG2 is a process flow chart of a recycled material accounting and traceability method based on RMS provided in an embodiment of the present application;

[0042] FIG3 is a schematic structural diagram of a recycled material accounting and tracing device based on RMS provided in an embodiment of the present application;

[0043] FIG4 is a schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] It is worth noting that the existing technology does not trace the proportion of recycled materials in waste batteries, and when purchased metal salts and purchased crude salts are added, tracing the proportion of recycled materials in waste batteries becomes more complicated. Based on this, the present invention provides a recycled material accounting and tracing method, device, equipment and storage medium based on RMS. It is mainly based on the collection process parameters on the production line for recycling recycled positive electrode materials from waste batteries, and based on the nonlinear relationship between the process parameters and the proportion of recycled materials, it accurately calculates the proportion of recycled materials of elements in waste batteries, thereby filling the technical gap in the recycling industry chain that cannot trace the proportion of recycled materials, accurately tracing the proportion of recycled materials, and improving the efficiency of recycling supervision. In order to better illustrate the technical solution of the present invention, it will be specifically described from the following examples.

[0046] Example 1

[0047] 1 is a flow chart of a recycled material accounting and traceability method based on RMS provided in an embodiment of the present application, including steps S11 to S12, specifically:

[0048] Step S11, recovering regenerated positive electrode materials from waste batteries, and collecting process parameters on the regenerated positive electrode material production line; wherein the process parameters include: a first mass of the elements of the waste batteries in the mixed precursor, a second mass in the regenerated positive electrode material, a first proportion of recycled materials in the purchased precursor, an outsourcing 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.

[0049] It is worth noting that the first mass is the mass of the elements of waste batteries in the mixed precursor; the second mass is the mass of the elements of waste batteries in the recycled positive electrode material; the first proportion is the proportion of the elements of waste batteries in the recycled materials in the purchased precursor; the second proportion is the proportion of the elements of waste batteries in the recycled materials in the purchased crude salt; the third proportion is the proportion of the elements of waste batteries in the purchased metal salt when producing the precursor.

[0050] In some embodiments of the present application, after the recycled positive electrode material is recovered from the waste battery, it also includes: tracing the recycled material based on BTB; wherein, tracing the recycled material in stages based on BTB includes: coding and tracing the recycled material according to the operation before the leaching process based on the RMS process, tracing the recycled material by time period according to the leaching process, and tracing the recycled material by batch after the leaching process.

[0051] The present invention adopts the BTB traceability method based on barcode traceability, time period traceability and batch traceability. After extracting the proportion of recycled materials based on RMS, it can trace the recycled materials in stages using different traceability methods, filling the technical gap in the traceability of recycled materials, accurately tracing the proportion of recycled materials, and thus improving the efficiency of recycling supervision.

[0052] In some embodiments of the present application, recycling positive electrode materials from waste batteries includes: extracting a leachate from the waste batteries, adding purchased metal salts when extracting a precursor based on the leachate, and adding purchased crude salts when extracting lithium salts based on the leachate; mixing the extracted precursor and lithium salt with the purchased precursor and purchased refined salt to prepare a mixture, and recycling positive electrode materials based on the mixture.

[0053] In some embodiments of the present application, when extracting the precursor according to the leachate, purchased metal salts are added, including: extracting the leachate, adding the qualified extracted liquid to the batching to make a batching liquid, adding the purchased metal salts to the batching liquid to react and extract the precursor.

[0054] In some embodiments of the present application, the purchased metal salt is at least one of a purchased nickel salt, a purchased cobalt salt, a purchased manganese salt, a purchased iron salt or a purchased phosphate salt.

[0055] In some embodiments of the present application, the process of recycling and regenerating positive electrode materials is shown in Figure 2, which is a process flow chart of the recycled material accounting and traceability method based on RMS provided in an embodiment of the present application. In the figure, based on the Recovered Material Standard (RMS), the recycled positive electrode materials of waste batteries and process materials are recycled. Specifically, the module of the waste battery is first obtained, and then the module is disassembled to obtain the battery cell. In this process, which is the process before the leaching process, the recycled material is traced by coding traceability; the battery cell and process material are discharged, pyrolyzed and crushed, and the battery black powder is screened out; the battery black powder is oxidized and leached to extract the leachate.

[0056] In Figure 2, when extracting the precursor from the leachate, the qualified liquid extracted from the leachate is added to the batching to make a batching liquid; purchased nickel and cobalt salts are added to the batching liquid for reaction to obtain the precursor. During this leaching process, the recycled material is traced by time period. The extracted lithium salt and the precursor are mixed, and purchased refined salt and the purchased precursor are added to obtain a mixture. Based on the reaction of the mixture, the NCM ternary recycled positive electrode material composed of nickel (Ni), cobalt (Co), manganese (Mn) and lithium (Li) is produced; among them, the recycled material is traced by batch based on the mixture.

[0057] In Figure 2, lithium salts and precursors can be extracted from the leachate. When extracting lithium salts from the leachate, the leachate is extracted to obtain a raffinate. The raffinate is then causticized to produce a causticized solution. Purchased crude salt is then added to the causticized solution to fully extract the lithium salts from the causticized solution.

[0058] It is worth noting that purchased lithium salts include purchased refined salts and purchased coarse salts. Purchased coarse salts are added when extracting lithium salts, and purchased refined salts are added during calcination. The purchased metal salts in Figure 2 include purchased nickel-cobalt salts.

[0059] It is worth noting that during the extraction of lithium salts and NCM regenerated cathode materials from the caustic solution and the mixed material, respectively, the failed lithium element compounds are directly repaired using purchased lithium salts to restore the electrochemical properties of the compounds. The restored compounds can then be reused as recycled materials. Similarly, purchased nickel-cobalt salts are added to the batching solution, and purchased precursors are added to the mixed material. After regenerated cathode materials are prepared based on RMS, the proportion of recycled materials for each element in the waste battery can be traced back to the recycled materials, including both recycled materials from the waste battery and recycled materials of purchased lithium salts, purchased nickel-cobalt salts, and purchased precursors, allowing for accurate traceability of the recycled material proportions of each element throughout the RMS-based process.

[0060] In some embodiments of the present application, the RMS process in Figure 2 is used to recycle and regenerate NCM ternary regenerated positive electrode materials, or the RMS process in Figure 2 is used to recycle and regenerate NCA ternary regenerated positive electrode materials composed of nickel, cobalt, aluminum (Al) and lithium to obtain the proportion of recycled materials in the NCM ternary regenerated positive electrode materials or the NCA ternary regenerated positive electrode materials.

[0061] The present invention recovers regenerated positive electrode materials from waste batteries based on RMS and traces the recycled materials based on RMS. Therefore, the recycled positive electrode materials can be generally extracted from waste batteries and have high applicability and practicality.

[0062] Step S12: Obtain the recycled material proportion of the element according to the nonlinear relationship between the first mass, the first proportion, the outsourcing rate, the second proportion, the third proportion and the second mass.

[0063] In some embodiments of the present application, the element is any one of nickel, cobalt, manganese, iron, lithium or phosphorus.

[0064] In some embodiments of the present application, the recycled material proportion of the element is obtained according to the nonlinear relationship among the first mass, the first proportion, the outsourcing rate, the second proportion and the third proportion and the second mass, including: obtaining the first recycled material proportion of the element in the mixed precursor according to the second proportion, the third proportion, the outsourcing rate and the first proportion, and obtaining the second recycled material proportion of the element in the regenerated positive electrode material according to the first recycled material proportion, the first mass and the second mass; wherein the element is any one of nickel, cobalt, manganese, iron, lithium or phosphorus.

[0065] In some embodiments of the present application, the first recycled material ratio can be expressed as: R Ci =(R Mi *y i +(1-y i ))*(1-x i )+R wi *x i ,

[0066] Among them, R Ci is the proportion of first recycled materials where element i is nickel, cobalt, manganese, iron, lithium or phosphorus; R Mi 、y i 、x i and R wi They are the second proportion, third proportion, outsourcing rate and first proportion of element i respectively.

[0067] In some embodiments of the present application, the proportion of the first recycled material of the element in the recycled positive electrode material can be expressed as:

[0068] Among them, R Di The first recycled material percentage of element i is nickel, cobalt, manganese, iron, lithium or phosphorus; C i is the first mass of element i; D i is the second mass of element i; (R Mi *y i +(1-y i ))*(1-x i )+R wi *x i is the first proportion of recycled materials.

[0069] In some embodiments of the present application, when obtaining the second recycled material ratio, the nickel-containing recycled raw materials include: at least one of nickel-containing battery waste, pure nickel waste, nickel alloy waste, waste nickel powder, nickel salt waste, nickel mud, nickel-containing catalyst waste or nickel-containing ash.

[0070] In some embodiments of the present application, when obtaining the second recycled material ratio, the cobalt-containing recycled raw material includes: at least one of: cobalt-containing battery waste, pure cobalt waste, cobalt alloy waste, cobalt salt waste, cobalt-containing catalyst waste or cobalt slag waste.

[0071] In some embodiments of the present application, when obtaining the proportion of the second recycled material, the lithium-containing recycled raw materials include: ① lithium-containing battery waste, which includes: lithium-containing waste batteries and at least one of lithium battery recycled positive electrode material wastes such as lithium cobaltate, lithium nickel cobalt manganese oxide, lithium iron phosphate, lithium manganese oxide, lithium nickel cobalt aluminum oxide or lithium nickel oxide generated in the production process of lithium batteries, and at least one of electrolyte materials such as lithium hexafluorophosphate or negative electrode material wastes such as lithium titanate; ② lithium salt waste, which includes: at least one of lithium carbonate, lithium hydroxide monohydrate, lithium bromide, lithium fluoride, lithium chloride or metallic lithium; ③ other lithium-containing wastes, including: at least one of lithium-containing slag or lithium-containing alloys remaining in the ore smelting process.

[0072] In some embodiments of the present application, when obtaining the proportion of the second recycled material, the manganese-containing recycled raw materials include: at least one of manganese-containing battery waste, manganese alloy waste, manganese salt waste, nickel mud, manganese ore waste, manganese oxide slag or chemical manganese mud.

[0073] In some embodiments of the present application, when obtaining the proportion of the second recycled material, the phosphorus-containing recycled raw materials include: at least one of: phosphorus-containing battery waste, phosphate salt waste, phosphogypsum, phosphate tailings, phosphate fertilizer slag, phosphating slag or phosphate mud.

[0074] In some embodiments of the present application, when obtaining the second recycled material ratio, the iron-containing recycled raw materials include: at least one of iron-containing battery waste, pure iron waste, iron salt waste, automobile dismantling materials, alloy steel waste or cast iron waste, etc.

[0075] In some embodiments of the present application, in addition to obtaining the recycled material proportion of the element based on the nonlinear relationship between the first mass, the first proportion, the outsourcing rate, the second proportion, and the third proportion and the second mass, it also includes: obtaining the third recycled material proportion of the element in the recycled material type in the mixed precursor based on the source of the recycled material in the waste batteries and process materials, and obtaining the fourth recycled material proportion of the element in the recycled material type based on the third recycled material proportion.

[0076] In some embodiments of the present application, the proportion of the third recycled material can be expressed as:

[0077] R Cij =[R Mij *y i +R Bij *(1-y i )]*(1-x i )+R wij *x i ,

[0078] Among them, R Cij The third recycled material proportion of element i being nickel, cobalt, manganese, iron, lithium or phosphorus in the mixed precursor, the sources of the recycled material types including: the waste battery and the process material; R Mij is the fourth proportion of element i in at least one of the recycled materials type j in the purchased crude salt or black powder, y i It is the fifth proportion of at least one of the purchased crude salt or black powder used in the production of precursors of element i, R Bij is the sixth proportion of recycled material type j in self-produced black powder by element i, x i is the outsourcing rate of element i in the precursor, R wij It is the seventh proportion of recycled material type j in purchased precursors of element i.

[0079] In some embodiments of the present application, obtaining the fourth recycled material ratio of the element in the recycled material type can be expressed as:

[0080] Among them, R Dij The percentage of the fourth recycled material of recycled material type j where element i is nickel, cobalt, manganese, iron, lithium or phosphorus, C i is the first mass of element i, D i It is the second mass of element i in the regenerated positive electrode material; [R Mij *y i +R Bij *(1-y i )]*(1-x i )+R wij*x i is the proportion of the third recycled material.

[0081] It is worth noting that the sources of recycled materials include: the waste batteries and the process materials, and the source of recycled materials in the waste batteries is specifically post-consumer waste of batteries.

[0082] In some embodiments of the present application, when obtaining the fourth recycled material ratio, the nickel-containing recycled raw materials include: nickel-containing process materials and nickel-containing post-consumer waste; wherein, the nickel-containing process materials include: nickel-containing battery production process waste, pure nickel waste, nickel alloy production process waste, waste nickel powder, nickel salt waste, nickel mud, nickel-containing catalyst waste or nickel-containing ash, etc. at least one; nickel-containing post-consumer waste includes: nickel-containing battery post-consumer waste or nickel alloy post-consumer waste at least one.

[0083] In some embodiments of the present application, when obtaining the fourth recycled material ratio, the cobalt-containing recycled raw materials include: cobalt-containing process materials and cobalt-containing post-consumer waste; wherein, the cobalt-containing process materials include: at least one of cobalt battery production process waste, pure cobalt production process waste, cobalt alloy waste, cobalt salt waste, cobalt-containing catalyst production process waste or cobalt slag waste, etc.; cobalt-containing post-consumer waste includes: at least one of cobalt-containing battery post-consumer waste, cobalt alloy post-consumer waste or cobalt-containing catalyst post-consumer waste.

[0084] In some embodiments of the present application, when obtaining the fourth recycled material ratio, 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, as well as 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 or lithium nickel oxide generated in the lithium battery production process, and at least one of the electrolyte materials such as lithium hexafluorophosphate or 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 or metallic lithium; ③ other lithium-containing waste materials, including at least one of the lithium-containing slag or lithium-containing alloys remaining in the ore smelting process; lithium-containing post-consumer waste includes: ① lithium-containing battery post-consumer waste, 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 or lithium nickel oxide in lithium-containing waste batteries, and at least one of the electrolyte materials such as lithium hexafluorophosphate or the negative electrode material wastes such as lithium titanate.

[0085] In some embodiments of the present application, when obtaining the fourth recycled material ratio, the manganese-containing recycled raw materials include: manganese-containing process materials and manganese-containing post-consumer waste; wherein, the manganese-containing process materials include: manganese-containing battery production process waste, manganese alloy production process waste, manganese salt waste, nickel mud, manganese ore waste, manganese oxide slag or chemical manganese mud, etc. At least one; manganese-containing post-consumer waste: at least one of manganese-containing battery post-consumer waste or manganese alloy post-consumer waste.

[0086] In some embodiments of the present application, when obtaining the fourth recycled material ratio, 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, phosphating slag or phosphate mud; the phosphorus-containing post-consumer waste includes: phosphorus-containing battery post-consumer waste.

[0087] In some embodiments of the present application, when obtaining the fourth recycled material ratio, the iron-containing recycled raw materials include: iron-containing process materials and iron-containing post-consumer waste; wherein, the iron-containing process materials include: iron-containing battery production process waste, pure iron waste, iron salt waste, automobile production process dismantling materials, alloy steel production process waste or cast iron production process waste, etc. at least one; iron-containing post-consumer waste includes: iron-containing battery post-consumer waste, scrapped automobile dismantling materials, alloy steel post-consumer waste or cast iron post-consumer waste, etc. at least one.

[0088] It is worth noting that, in the absence of conflict, the embodiments of the present application can be combined with each other.

[0089] It's worth noting that the fourth percentage refers to the proportion of a specific element's waste battery or process materials in purchased crude salt or black powder; the fifth percentage refers to the proportion of a specific element's use of purchased crude salt or black powder in precursor production; the sixth percentage refers to the proportion of a specific element's waste battery or process materials in domestically produced black powder; and the seventh percentage refers to the proportion of a specific element's waste battery or process materials in purchased precursors. Process parameters also include the fourth, fifth, sixth, and seventh percentages.

[0090] The second recycled material ratio is calculated based on a nonlinear relationship that does not distinguish the sources of recycled materials. The fourth recycled material ratio is calculated based on a nonlinear relationship that distinguishes the sources of recycled materials, thereby accurately determining the sources of recycled materials and their ratios in different sources.

[0091] The present invention collects process parameters during the process of recycling and regenerating positive electrode materials. Through the nonlinear relationship of the process parameters, the proportion of recycled materials can be accurately traced, thereby improving the efficiency of recycling supervision.

[0092] In some embodiments of the present application, when tracing the proportion of recycled materials for nickel-cobalt-manganese-oxide lithium ternary batteries, if the recycled material proportion data and supporting materials from the supplier are not received, the above-mentioned metal salt recycled material content is calculated as 0. At this time, i∈{Ni,Co,Li,Mn}, the second recycled material proportion of the NCM ternary recycled positive electrode material can be calculated as:

[0093] When i=Ni, the proportion of the second recycled material of Ni element is:

[0094] When i=Co, the proportion of the second recycled material of Co element is:

[0095] When i=Li, the proportion of the second recycled material of Li element is:

[0096] When i=Mn, the proportion of the second recycled material with Mn element is:

[0097] It can be seen that the above traceability method can accurately obtain the proportion of the second recycled material of the NCM ternary recycled positive electrode material as shown in Table 1 below.

[0098] Table 1 The proportion of second recycled materials of NCM ternary recycled cathode materials

[0099] In one embodiment of the present application, when tracing the proportion of recycled materials for nickel cobalt aluminum oxide ternary lithium batteries, at this time, i∈{Ni, Co, Li, Al}, the proportion of recycled materials in the NCA ternary recycled positive electrode material can be calculated as:

[0100] When i=Ni, the proportion of the second recycled material of Ni element is:

[0101] When i=Co, the proportion of the second recycled material of Co element is:

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

[0103] When i=Al, the proportion of the second recycled material of Al element is:

[0104] In one embodiment of the present application, when tracing the proportion of recycled materials for nickel-cobalt-manganese oxide ternary batteries, at this time, i∈{Ni, Co, Li, Mn}, the proportion of the fourth recycled material of the NCM ternary recycled positive electrode material can be calculated as:

[0105] When i = Ni and j = waste battery (Wb), the proportion of Ni element in the fourth recycled material of waste battery is:

[0106] When i = Co and j = waste battery, the proportion of Co element in the fourth recycled material of waste battery is:

[0107] When i = Li and j = waste battery, the proportion of Li element in the fourth recycled material of waste battery is:

[0108] When i = Mn and j = waste battery, the proportion of Mn element in the fourth recycled material of waste battery is:

[0109] Among them, Wb is waste batteries.

[0110] In one embodiment of the present application, when tracing the proportion of recycled materials for nickel-cobalt-manganese oxide ternary batteries, at this time, i∈{Ni, Co, Li, Mn}, the proportion of the fourth recycled material of the NCM ternary recycled positive electrode material can be calculated as:

[0111] When i = Ni and j = process materials (Pm), the proportion of Ni element in the fourth recycled material in the process material is:

[0112] When i = Co and j = waste battery, the proportion of Co element in the fourth recycled material in the process material is:

[0113] When i = Li and j = waste battery, the proportion of Li element in the fourth recycled material in the process material is:

[0114] When i = Mn and j = waste battery, the proportion of Mn element in the fourth recycled material in the process material is:

[0115] Among them, Pm is process material.

[0116] In one embodiment of the present application, when tracing the proportion of recycled materials for nickel cobalt aluminum oxide ternary batteries, at this time, i∈{Ni, Co, Li, Al}, the proportion of the fourth recycled material of the NCA ternary recycled positive electrode material can be calculated as:

[0117] When i = Ni and j = waste battery, the proportion of Ni element in the fourth recycled material of waste battery is:

[0118] When i = Co and j = waste battery, the proportion of Co element in the fourth recycled material of waste battery is:

[0119] When i = Li and j = waste battery, the proportion of Li element in the fourth recycled material of waste battery is:

[0120] When i = Al and j = waste battery, the proportion of Al element in the fourth recycled material of waste battery is:

[0121] Among them, Wb is waste batteries.

[0122] In one embodiment of the present application, when tracing the proportion of recycled materials for nickel-cobalt-manganese oxide ternary batteries, at this time, i∈{Ni, Co, Li, Al}, the proportion of the fourth recycled material of the NCM ternary recycled positive electrode material can be calculated as:

[0123] When i = Ni and j = process materials (Pm), the proportion of Ni element in the fourth recycled material in the process material is:

[0124] When i = Co and j = waste battery, the proportion of Co element in the fourth recycled material in the process material is:

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

[0126] When i = Al and j = waste battery, the proportion of Al element in the fourth recycled material in the process material is:

[0127] Among them, Pm is process material.

[0128] The present invention collects process parameters during the preparation of regenerated positive electrode materials, and obtains the proportion of recycled materials of elements based on the nonlinear relationship of the process parameters, thereby filling the technical gap in the recycling industry chain that cannot trace the proportion of recycled materials, and accurately traces the proportion of recycled materials through the nonlinear relationship of the process parameters, thereby improving the efficiency of recycling supervision.

[0129] Example 2

[0130] 3 , which is a schematic structural diagram of a recycled material accounting and tracing device based on RMS provided in an embodiment of the present application, including: a data acquisition unit 21 and a recycled material proportion tracing unit 22 .

[0131] The data acquisition unit 21 is used to recover regenerated positive electrode materials from waste batteries and collect process parameters on the regenerated positive electrode material production line; wherein the process parameters include: the first mass of the elements of the waste batteries in the mixed precursor, the second mass in the regenerated positive electrode material, the first proportion of recycled materials in the purchased precursor, the purchase rate in the precursor, the second proportion of recycled materials in the purchased crude salt, and the third proportion of purchased metal salts used in the production of the precursor.

[0132] In some embodiments of the present application, after the recycled positive electrode material is recovered from the waste battery, it also includes: tracing the recycled material based on BTB; wherein, tracing the recycled material in stages based on BTB includes: coding and tracing the recycled material according to the operation before the leaching process based on the RMS process, tracing the recycled material by time period according to the leaching process, and tracing the recycled material by batch after the leaching process.

[0133] The present invention adopts the BTB traceability method based on barcode traceability, time period traceability and batch traceability. After extracting the proportion of recycled materials based on RMS, it can trace the recycled materials in stages using different traceability methods, filling the technical gap in the traceability of recycled materials, accurately tracing the proportion of recycled materials, and thus improving the efficiency of recycling supervision.

[0134] In some embodiments of the present application, recycling positive electrode materials from waste batteries includes: extracting a leachate from the waste batteries, adding purchased metal salts when extracting a precursor based on the leachate, and adding purchased crude salts when extracting lithium salts based on the leachate; mixing the extracted precursor and lithium salt with the purchased precursor and purchased refined salt to prepare a mixture, and recycling positive electrode materials based on the mixture.

[0135] In some embodiments of the present application, when extracting a precursor from the leachate, adding a purchased metal salt comprises: extracting the leachate, adding the qualified extracted liquid to a batching liquid to prepare a batching liquid, adding the purchased metal salt to the batching liquid to react and extract the precursor. In some embodiments of the present application, the crude salt is a lithium salt, and the purchased metal salt is a purchased nickel-cobalt salt.

[0136] In some embodiments of the present application, the purchased metal salt is at least one of a purchased nickel salt, a purchased cobalt salt, a purchased manganese salt, a purchased iron salt or a purchased phosphate salt.

[0137] In some embodiments of the present application, the purchased crude salt is lithium-containing crude salt, and the purchased refined salt is lithium-containing refined salt.

[0138] The recycled material proportion tracing unit 22 is used to obtain the recycled material proportion of the element according to the first mass, the first proportion, the outsourcing rate, the second proportion, and the nonlinear relationship between the third proportion and the second mass.

[0139] In some embodiments of the present application, the element is any one of nickel, cobalt, manganese, iron, lithium or phosphorus.

[0140] In some embodiments of the present application, the first recycled material ratio can be expressed as: R Ci =(R Mi *yi +(1-y i ))*(1-x i )+R wi *x i ,

[0141] Among them, R Ci R is the proportion of first recycled materials where element i is nickel, cobalt, manganese, iron, lithium or phosphorus; Mi 、y i 、x i and R wi They are the second proportion, third proportion, outsourcing rate and first proportion of element i respectively.

[0142] In some embodiments of the present application, the proportion of the first recycled material of the element in the recycled positive electrode material can be expressed as:

[0143] Among them, R Di The first recycled material percentage of element i is nickel, cobalt, manganese, iron, lithium or phosphorus; C i is the first mass of element i; D i is the second mass of element i; (R Mi *y i +(1-y i ))*(1-x i )+R wi *x i is the first proportion of recycled materials.

[0144] In some embodiments of the present application, in addition to obtaining the recycled material proportion of the element based on the nonlinear relationship between the first mass, the first proportion, the outsourcing rate, the second proportion, and the third proportion and the second mass, the method further includes: obtaining a third recycled material proportion of the element in the recycled material type in the mixed precursor based on the source of the recycled material in the waste batteries and process materials, and obtaining a fourth recycled material proportion of the element in the recycled material type based on the third recycled material proportion;

[0145] In some embodiments of the present application, the third recycled material ratio can be expressed as: R Cij =[R Mij *y i +R Bij *(1-y i )]*(1-x i )+R wij *x i ,

[0146] Among them, R CijThe third recycled material proportion of element i being nickel, cobalt, manganese, iron, lithium or phosphorus in the mixed precursor, the sources of the recycled material types including: the waste battery and the process material; R Mij is the fourth proportion of element i in at least one of the recycled materials type j in the purchased crude salt or black powder, y i It is the fifth proportion of at least one of the purchased crude salt or black powder used in the production of precursors of element i, R Bij is the sixth proportion of recycled material type j in self-produced black powder by element i, x i is the outsourcing rate of element i in the precursor, R wij It is the seventh proportion of recycled material type j in purchased precursors of element i.

[0147] In some embodiments of the present application, obtaining the fourth recycled material ratio of the element in the recycled material type can be expressed as:

[0148] Among them, R Dij The percentage of the fourth recycled material of recycled material type j where element i is nickel, cobalt, manganese, iron, lithium or phosphorus, C i is the first mass of element i, D i It is the second mass of element i in the regenerated positive electrode material; [R Mij *y i +R Bij *(1-y i )]*(1-x i )+R wij *x i is the proportion of the third recycled material.

[0149] The present invention adopts a data acquisition unit 21 to collect process parameters in the production line process of extracting and regenerating positive electrode materials from waste batteries, and transmits the process parameters to the recycled material proportion traceability unit 22; after receiving the process parameters, the recycled material proportion traceability unit 22 substitutes the process parameters into the constructed nonlinear relationship to obtain the recycled material proportion of the element, thereby filling the technical gap in the recycling industry chain that cannot trace the recycled material proportion, and through the nonlinear relationship of the process parameters, the recycled material proportion is accurately traced, thereby improving the recycling supervision efficiency.

[0150] Example 3

[0151] Referring to Figure 4 , a schematic diagram of an electronic device provided in an embodiment of the present application is shown. 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 described in Example 1.

[0152] It is worth noting that the electronic devices are not limited to computers, smart phones, tablet computers and dedicated smart detection instruments.

[0153] By integrating the RMS-based recycled material accounting and traceability method described in Example 1 on electronic devices, the present invention can quickly trace the proportion of recycled materials on site and provide feedback on the traceability of the proportion of recycled materials on site through various electronic devices, which has stronger scalability.

[0154] Example 4

[0155] It is a readable computer storage medium provided in an embodiment of the present application, on which a computer program is stored. When the computer program is executed by a processor, the steps of the RMS-based recycled material accounting and traceability method as described in Example 1 are implemented.

[0156] It is worth noting that the computer program is not limited to computer programming language or pseudo code.

[0157] By storing the RMS-based recycled material accounting and traceability described in Example 1 in a storage medium in the form of a program, the present invention can quickly trace 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.

[0158] Those skilled in the art will appreciate that the embodiments of the present application may also provide computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0159] The present application is described with reference to the flow chart and / or block diagram of the method, device (system), and computer program product according to the embodiment of the present application. It should be understood that each flow process and / or box in the flow chart and / or block diagram and the combination of the flow process and / or box in the flow chart and / or block diagram can be realized by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processing machine or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for realizing the function specified in one flow chart flow or multiple flows and / or one box or multiple boxes of the block diagram.

[0160] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0161] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0162] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for accounting and tracing recycled materials based on RMS, characterized in that, it includes: Recycling the regenerated cathode material from waste batteries and collecting the process parameters on the production line of the regenerated cathode material; wherein, the process parameters include: the first mass of the elements of the waste batteries in the mixed precursor, the second mass in the regenerated cathode material, the first proportion of recycled materials in the purchased precursor, the purchased rate in the precursor, the second proportion of recycled materials in the purchased crude salt, and the third proportion of using purchased metal salts when producing the precursor; According to the non-linear relationship between the first mass, the first proportion, the purchased rate, the second proportion, the third proportion and the second mass, obtain the proportion of recycled materials of the elements.

2. The method for accounting and tracing recycled materials according to claim 1, characterized in that, The step of obtaining the proportion of recycled materials of the elements according to the non-linear relationship between the first mass, the first proportion, the purchased rate, the second proportion, the third proportion and the second mass includes: According to the second proportion, the third proportion, the purchased rate and the first proportion, obtain the first proportion of recycled materials of the elements in the mixed precursor, and according to the first proportion of recycled materials, the first mass and the second mass, obtain the second proportion of recycled materials of the elements in the regenerated cathode material; wherein, the elements are any one of nickel, cobalt, manganese, iron, lithium or phosphorus; Preferably, the first proportion of recycled materials can be expressed as: R Ci = (R Mi * y i + (1 - y i )) * (1 - x i ) + R wi * x i , Among them, R Ci is the proportion of the first recycled material where element i is nickel, cobalt, manganese, iron, lithium or phosphorus; R Mi , y i , x i and R wi are the second proportion, the third proportion, the outsourcing rate and the first proportion of element i, respectively.

3. The method for accounting and tracing recycled materials according to claim 2, characterized in that, The first recycled material proportion of the element in the recycled cathode material can be expressed as: Among them, R Di is the proportion of the first recycled material where element i is nickel, cobalt, manganese, iron, lithium or phosphorus; C i is the first mass of element i; D i is the second mass of element i; (R Mi *y i +(1 - y i ))*(1 - x i ) + R wi *x i is the proportion of the first recycled material.

4. The method for accounting and tracing recycled materials according to claim 2, characterized in that, In addition to obtaining the proportion of recycled materials of the elements according to the non-linear relationship between the first mass, the first proportion, the purchased rate, the second proportion, the third proportion and the second mass, it further includes: obtaining the third proportion of recycled materials of the elements in the types of recycled materials in the mixed precursor according to the sources of the recycled materials in the waste batteries and process materials, and obtaining the fourth proportion of recycled materials of the elements in the types of recycled materials according to the third proportion of recycled materials; Preferably, the third proportion of recycled materials can be expressed as: R Cij = [R Mij * y i + R Bij * (1 - y i )] * (1 - x i ) + R wij * x i , Among them, R Cij is the third proportion of the recycled material of the type of recycled material of element i being nickel, cobalt, manganese, iron, lithium or phosphorus in the mixed precursor, and the sources of the types of recycled materials include: the waste batteries and the process materials; R Mij is the fourth proportion of element i in the type of recycled material j of at least one of the purchased crude salt or black powder, y i is the fifth proportion of element i when using at least one of the purchased crude salt or black powder in the production of the precursor, R Bij is the sixth proportion of element i in the type of recycled material j of the self-produced black powder, x i is the outsourcing rate of element i in the precursor, R wij is the seventh proportion of element i in the type of recycled material j of the purchased precursor.

5. The method for accounting and tracing recycled materials according to claim 4, characterized in that, The proportion of the fourth recycled material can be expressed as: Among them, R Dij is the proportion of the fourth recycled material of element i being nickel, cobalt, manganese, iron, lithium or phosphorus in the recycled material type j, C i is the first mass of element i, D i is the second mass of element i in the recycled cathode material; [R Mij *y i +R Bij *(1 - y i )]*(1 - x i ) + R wij *x i is the proportion of the third recycled material.

6. The method for accounting and tracing recycled materials according to claim 1, characterized in that, After recycling the regenerated cathode material from the waste batteries, it further includes: tracing the recycled materials based on BTB; wherein, the step of tracing the recycled materials in stages based on BTB includes: Encoding and tracing the recycled materials according to the operations before the leaching process based on the RMS process, tracing the recycled materials by time period according to the leaching process, and tracing the recycled materials by batch according to after the leaching process.

7. The method for accounting and tracing recycled materials according to claim 1, characterized in that, The step of recycling the regenerated cathode material from the waste batteries includes: Extracting the leaching solution of the waste batteries, adding purchased metal salts when extracting the precursor according to the leaching solution, and adding purchased crude salt when extracting lithium salts according to the leaching solution. The extracted precursor and lithium salt are mixed with the purchased precursor and purchased refined salt to obtain a mixture, and the recycled cathode material is recovered according to the mixture.

8. The recycled material accounting and traceability method according to claim 7, wherein, when extracting the precursor according to the leaching solution, adding purchased metal salts, including: extracting the leaching solution, and adding the qualified solution extracted into the ingredients to make an ingredient solution, and adding the purchased metal salts to the ingredient solution for reaction to extract the precursor.

9. The recycled material accounting and traceability method according to claim 8, wherein, the purchased metal salts are at least one of purchased nickel salt, purchased cobalt salt, purchased manganese salt, purchased iron salt or purchased phosphorus salt.

10. The recycled material accounting and traceability method according to claim 7, wherein, the purchased crude salt is lithium-containing crude salt, and the purchased refined salt is lithium-containing refined salt.

11. A recycled material accounting and traceability device based on RMS, wherein, comprising: a data acquisition unit and a recycled material ratio traceability unit; wherein, the data acquisition unit is used to recover the recycled cathode material from waste batteries 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 batteries in the mixed precursor, the second mass in the recycled cathode material, the first ratio of the recycled material in the purchased precursor, the purchased rate in the precursor, the second ratio of the recycled material in the purchased crude salt, and the third ratio of using the purchased metal salts when producing the precursor; the recycled material ratio traceability unit is used to obtain the recycled material ratio of the element according to the non-linear relationship between the first mass, the first ratio, the purchased rate, the second ratio and the third ratio and the second mass.

12. An electronic device, wherein, one or more processors; a memory having stored thereon one or more programs, which when executed by the one or more processors cause the one or more processors to implement the steps of the RMS-based recycled material accounting and traceability method according to any one of claims 1-10.

13. A readable computer storage medium having stored thereon a computer program, wherein, the computer program when executed by a processor implements the steps of the RMS-based recycled material accounting and traceability method according to any one of claims 1-10.

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