1983 results about "Battery recycling" patented technology

The invention relates to a waste lithium iron phosphate battery recycling method, in particular to a graded recycling method for lithium, iron, phosphorus and graphite in a waste lithium iron phosphate battery, and belongs to the technical field of lithium ion batteries and resource recycling of the lithium ion batteries. According to the method, the mode that oxidizing roasting and selective leaching are combined is adopted, the leaching rate and selectivity of lithium are effectively improved, the leaching rate of the lithium element is close to 100% under the optimized condition, and limit recovery of the lithium element is achieved; meanwhile, aiming at the problem that iron and phosphorus in the leaching residues are difficult to utilize, a wet ball milling and secondary acid leaching method is combined, phosphorus and iron elements are separated from negative electrode graphite firstly, and graded recovery of iron, phosphorus and graphite is achieved. According to the method, the high recovery rate of lithium is realized, and meanwhile, high-added-value products such as ferric oxide and sodium phosphate are prepared by efficiently recovering ferric phosphate.

The invention provides a method for preferentially extracting lithium from battery black powder, and relates to the field of battery recovery. The method comprises the following steps: mixing battery black powder with water and acid liquor, carrying out lithium extraction reaction on the battery black powder under the conditions of pressurization and heating to obtain reacted slurry, and carrying out solid-liquid separation to obtain a lithium-rich solution and residues; the battery black powder comprises at least one of waste ternary lithium ion battery positive electrode powder, waste ternary lithium ion battery positive and negative electrode mixed powder and waste lithium iron phosphate battery black powder. According to the method for preferentially extracting the lithium from the battery black powder, operation steps are simplified, energy consumption is reduced, efficient and preferential recovery of the lithium is achieved, the recovery rate of the lithium and the separation efficiency of the lithium and nickel / cobalt / manganese are remarkably improved, the lithium leaching rate can reach 96.5% or above, and the nickel-cobalt-manganese leaching rate is lt; and 0.5%.

The invention discloses a new energy automobile battery recycling management system and a new energy automobile battery recycling management method, and relates to the technical field of battery recycling. A multi-dimensional evaluation standard is introduced in a screening stage, and batteries capable of being used in an echelon mode are screened through a weighted scoring method in combination with the service life, the driving mileage and the operation data abnormal condition of a vehicle; the situation that the batteries with too large health state differences enter the echelon utilization process is reduced; in the health assessment stage, SOC is calculated by adopting a coulometric method, SOH is measured in combination with a state-of-health ratio method, and an exponential attenuation model is introduced to predict the future life of the battery, so that the state-of-health of the battery entering the echelon utilization link is similar, and the problem of echelon utilization imbalance caused by individual difference is reduced; in the matching link, the batteries are grouped based on capacity, internal resistance and attenuation trend, deviation threshold values are set, optimal matching is screened, it is guaranteed that performance parameters of the assembled battery pack are balanced as much as possible, energy loss and local heating are reduced, and system stability is improved.

The invention relates to the technical field of battery recovery monitoring, in particular to a discharge crushing environmental data monitoring system for battery recovery. The system comprises a data acquisition module used for obtaining a sequence corresponding to each dimension based on environment data of different dimensions in the battery crushing equipment; the sample space construction module is used for screening the dimensions to obtain to-be-analyzed dimensions and constructing a sample space; the clustering analysis module is used for clustering the data points in the sample space to obtain clusters; judging whether the data points in each cluster are suspected abnormal data points or not; the abnormal degree acquisition module is used for clustering all the suspected abnormal data points in a time sequence to obtain a time sequence cluster and an abnormal degree; and the monitoring module is used for acquiring the comprehensive abnormal degree and judging whether the discharge breakage of the battery is abnormal or not based on the comprehensive abnormal degree. The condition of the old battery discharge crushing process can be accurately monitored.

The invention discloses a solid-phase sintering repair method of a waste lithium iron phosphate battery material, and relates to the related field of battery recovery and repair, and the method comprises the following steps: disassembling the waste lithium iron phosphate battery material, taking out a battery positive plate, cleaning, drying and separating a positive material; a spectrograph is adopted for component analysis, the element component content is determined, and raw material adding and supplementing are conducted based on the deviation value of the theoretical element proportion; based on the characteristic information, sectional type sintering scheme analysis is conducted, and solid-phase sintering repair scheme parameters are obtained; the mixed lithium iron phosphate powder is pressed into a sheet shape and placed in sintering equipment for solid-phase sintering repairing treatment, and a repairing sample is obtained; and obtaining test performance parameters according to a battery application detection standard, and performing repair compensation control on the repair scheme parameters. The technical problem that the repairing effect is uncontrollable due to lack of precise analysis and targeted optimization in existing solid-phase sintering repairing is solved, and the technical effects of efficient repairing and performance improvement are achieved.

The invention belongs to the technical field of waste battery recovery, and particularly relates to a single battery recovery line, which is characterized in that two opposite sides of a shell are cut by a shell cutting device to preliminarily loosen a battery cell from the shell, then an annular kerf is cut around one end, corresponding to a tab, of the shell on a tab cutting device, and under the protection of the shell, the battery cell can be recovered. The battery is pressed downwards by the pressing plate, the position of the annular kerf is blanked by the cutter, so that the battery cell is separated from the tab, then the battery cell is pulled out by the cell pulling device, and the separation speed of the tab and the battery cell can be increased through the arrangement, so that the battery recycling efficiency is improved; compared with a traditional conveying belt, by means of the fixed stroke distance of the shifting rod, the battery can be accurately shifted to the preset position every time, a mechanism for stopping the battery does not need to be additionally arranged, and therefore the battery transferring accuracy is improved, and the equipment cost is reduced.

The present invention relates to the technical field of carbon emissions, and in particular relates to a method and a system for quantitative analysis of carbon emissions based on power battery recycling. The method comprises: sampling battery recovery processing data of each stage of power battery recycling at specific sampling intervals during a sampling period; extracting the battery recovery processing data at each stage of power battery recycling, to obtain a corresponding time-quantized feature; conducting an influencing factor analysis on the time-quantized features, to obtain a key influencing factor for carbon emissions; and obtaining quantitative information of power battery carbon emissions according to the key influencing factor for carbon emissions and time-quantized features. In the invention, by means of performing quantitative processing on a battery recycling processing data at various stages of power battery regeneration utilization, a comprehensive and accurate analysis of carbon emission in the regeneration utilization process is achieved. Furthermore, quantitative information on power battery carbon emissions is optimized and adjusted on the basis of reinforcement learning, thereby increasing the accuracy of quantification of carbon emissions.

The invention discloses a method for preparing a composite positive electrode material by using a waste battery, and belongs to the technical field of battery recovery. The method comprises the following steps: discharging, disassembling and sorting a waste lithium iron phosphate battery to obtain a positive plate, carrying out water treatment, separating from an aluminum foil to obtain a waste lithium iron phosphate sheet, adding sodium hypochlorite, tetraethoxysilane, deionized water and hydrochloric acid, stirring to obtain SiO2-coated iron phosphate precipitate particles and a lithium-containing solution, adding sodium hydroxide into the lithium-containing solution to adjust the pH value, and carrying out solid-liquid separation to obtain the lithium-ion battery cathode material. Adding sodium carbonate, heating and drying to obtain lithium carbonate precipitate. And adding a carbon source and alcohol into the SiO2-coated iron phosphate precipitate particles and lithium carbonate, carrying out ball milling, taking out, drying, and calcining in a protective atmosphere to obtain the positive electrode composite material. Compared with the prior art, according to the prepared positive electrode composite material, material particles contain a lithium silicate network, so that the specific discharge capacity of a battery material is effectively improved. The method is simple in process and suitable for comprehensive utilization of waste batteries.

The invention relates to the technical field of battery recycling, and discloses a new energy automobile battery recycling performance evaluation system which comprises the following steps: S1, preliminarily screening out dispute batteries; s2, acquiring a characteristic parameter set of the dispute battery in a plurality of temperature zones; s3, inputting the characteristic parameter set into a battery evaluation model, and respectively calculating a temperature sensitive factor, a heat capacity coupling coefficient and an impedance-temperature relation curve slope by constructing a plurality of coefficient evaluation functions in the model; s4, dynamically determining the weight of each coefficient evaluation function based on historical data, and constructing a standard evaluation function to calculate the health index of the dispute battery; and S5, performing echelon grading recycling on the dispute batteries according to the health indexes. According to the method, the performance difference between the batteries to be recycled is amplified by measuring the performance difference of the batteries to be tested at high temperature, normal temperature and low temperature, so that the evaluation accuracy of the batteries is improved, and the method has extremely high economic and safety benefits.

The present disclosure relates to a recycled positive electrode active material, a method of producing the recycled positive electrode active material, and a secondary battery including the same. The recycled positive electrode active material, including: 60 mol % or more of Ni; and crystalline LiF, or 0.24% by weight or less of residual Li2CO3, where the recycled positive electrode active material is one or more selected from the group consisting of a lithium nickel oxide (LNO)-based positive electrode active material, a nickel·cobalt·manganese (NCM)-based positive electrode active material, a nickel·cobalt·aluminum (NCA)-based positive electrode active material, and a nickel·cobalt·manganese·aluminum (NCMA)-based positive electrode active material.

The invention discloses lithium battery recycling material powder as well as a preparation method and application thereof, and relates to the technical field of battery recycling. The lithium battery recovery material powder comprises metal compound powder and an elemental carbon material, and the metal compound powder comprises at least one of the following elements: lithium, nickel, cobalt, manganese and iron; the separation index S of the lithium battery recovery material powder is greater than or equal to 0.15 m < 2 > / kg and less than or equal to 43 m < 2 > / kg, S = WDOC * BET, WDOC refers to the mass percent of soluble organic carbon in the lithium battery recovery material powder, and the soluble organic carbon refers to organic carbon which can be dissolved or dispersed in an aqueous solution with the pH value of 1-14; bET refers to the specific surface area of the lithium battery recovery material powder. The separation efficiency is high when the positive electrode material and the negative electrode material in the lithium battery recycled material powder are separated, and when the lithium battery recycled material powder is subjected to hydrometallurgy to extract valuable metal, the good metal leaching rate is achieved in the acid leaching stage.

The invention discloses a battery health state monitoring method based on an entropy feature technology. The battery health state monitoring method based on the entropy feature technology comprises the following steps: data acquisition: acquiring a voltage signal generated in a battery recycling process; extracting and screening information entropy features, and extracting and screening the information entropy features in the voltage signals; and training and predicting information entropy features, inputting the information entropy features into a cpo-wlssvm-adaboost model for training, and outputting a health state estimation value of the battery. According to the method, after the information entropy features in the voltage signals are extracted, the information entropy features are input into the cpo-wlssvm-adaboost model for training and prediction, and accurate estimation of the health condition of the battery is achieved.

The present invention provides a carbon emission monitoring method and system for battery recycling, a device, and a medium. The method comprises: inputting acquired scrap information of a lithium battery to be recycled into a pre-constructed scrap classification model for classification prediction to obtain a scrap type; on the basis of the scrap type, determining an optimal recovery method and performing recovered carbon emission prediction on said lithium battery to obtain a carbon emission monitoring target value; performing recycling treatment on said lithium battery according to the optimal recovery method, and on the basis of the acquired actual carbon emission and actual economic revenue from recycling which correspond to each process step, obtaining the actual total carbon emission in recycling and the actual total economic revenue from recycling; and on the basis of the actual total carbon emission in recycling and the actual total economic revenue from recycling in combination with the carbon emission monitoring target value, evaluating the carbon emission in the recovery process of said lithium battery to obtain a carbon emission evaluation result. According to the present invention, a universal carbon emission monitoring method can be provided for lithium battery recovery, and comprehensive and accurate integrated monitoring and scientific and reasonable evaluation of carbon emission in the lithium battery recovery process can be realized.

The invention relates to the technical field of battery recycling, and discloses waste ternary lithium battery recycling equipment which comprises a crusher, a crushing roller and a crushing plate, a guide hopper is installed in the crusher, a conveying belt is arranged below the guide hopper, a crushing assembly is arranged on the outer side of the crushing roller, and an air hole used for spraying nitrogen is formed in the side portion of the crushing assembly. A gas conveying assembly is arranged in the crushing roller and communicates with the gas holes. In an oxygen-deficient environment, the crushing assembly extrudes and crushes the lithium battery, and when the lithium battery is crushed, the air holes spray nitrogen to the lithium battery, so that an oxygen-free environment is instantly formed near the lithium battery, and the risk of explosion generated when the lithium battery is crushed is effectively reduced; and the crushing head is driven by the sliding block to move outwards by the same distance for compensation, so that the distance between the end part of the crushing head and the crushing plate is not changed, and a good crushing effect is ensured.

The invention discloses a new energy vehicle battery recycling management method, and relates to the field of new energy vehicles, and the method comprises the steps: collecting multi-source heterogeneous data of a vehicle; the preprocessed historical vehicle track and the preprocessed battery parameters are regarded as different views respectively, and corresponding features are extracted: the features of the historical vehicle track view and the features of the battery parameter view are fused by adopting a multi-view subspace clustering algorithm to obtain vehicle-battery comprehensive features; calculating the similarity between the comprehensive characteristics of different vehicles-batteries, and constructing a hierarchical clustering tree of the vehicles-batteries to obtain a clustering result of the vehicles-batteries; in each cluster, a decision tree algorithm is adopted to train a battery residual capacity prediction model; and generating a battery recovery strategy of each vehicle-battery cluster according to a vehicle-battery clustering result and a prediction result of the residual capacity of the batteries in the corresponding cluster. Aiming at the lack of pertinence of new energy automobile battery recovery in the prior art, the battery recovery accuracy is improved.

This invention discloses a method for leaching lithium iron phosphate mixed powder with iron salts and recovering all components, belonging to the field of battery recycling. The invention uses an iron salt solution to leach the mixed powder, obtaining a lithium-containing leachate and leaching residue. Ferrous ions in the leachate are regenerated into ferric iron through acidification and oxidation, and recycled for leaching the next batch of mixed powder. After reaching a preset number of cycles, the leachate is used for re-leaching multiple batches of leaching residue to improve the lithium leaching rate. Ultimately, a enriched solution containing Li, Fe, Cu, and Al and graphite-containing iron phosphate residue are obtained. Copper is recovered from the enriched solution through iron powder replacement, and a high-purity lithium chloride solution is obtained through extraction and separation, while ferric chloride (recycled) and aluminum chloride crystals are also recovered. The leaching residue is treated with hydrochloric acid to obtain regenerated graphite, and the pH is adjusted with alkali to obtain high-purity iron phosphate. This method achieves full component recovery under mild conditions, reducing separation steps and chemical consumption through a "leaching-regeneration-leaching" cycle mechanism, thus achieving both environmental and economic benefits.

The invention discloses a waste battery recycling process and a system thereof, and particularly relates to the technical field of battery recycling. Leaching an electrode material of the waste nickel-metal hydride battery; collecting rare earth elements; precipitating and separating ferro-aluminum; recovering zinc and manganese; recovering the cobalt-containing nickel hydroxide; the system comprises a battery disassembling and screening device, a magnetic separator, a filter press and a reaction kettle, and the filter press comprises a plurality of filter pressing assemblies and is used for filtering liquid; according to the device, a plurality of areas of the filter cloth can be twisted to be in a wrinkled state firstly, then the adjacent positions of the wrinkles are knocked by the adjacent vibration plates, the wrinkled state and the stretched state are switched while the multiple areas of the filter cloth vibrate, the shaking effect of the filter cloth can be enhanced in the switching process, solid particles are separated from the filter cloth more thoroughly, and the filter cloth can be separated more thoroughly. And the recycling rate of the waste battery pack is improved.

The invention discloses a calcining carbon removal-supercritical expansion stripping method for regenerating graphene from graphite of a waste lithium battery, and belongs to the field of lithium battery recovery and nano material preparation. Comprising the following steps: treating the waste lithium battery to obtain waste lithium battery positive and negative electrode mixed powder, and then roasting to obtain battery powder; leaching the battery powder in a nitric acid solution to obtain purified graphite slag; the method comprises the following steps: mixing graphite slag with supercritical gas fluid, treating, quickly releasing pressure to normal pressure, and separating to obtain graphene. According to the method, on the basis of interlayer structure characteristics of the waste graphite negative electrode, organic matters and amorphous carbon are removed through multi-stage calcination, a supercritical N2 / CO2 mixed fluid permeation and pressure relief expansion synergistic stripping technology is combined, and low-damage dissociation is achieved through graphite microcracks. According to the method, physical stripping and liquid nitrogen shock cooling strengthening are coupled, and the obtained graphene sheet layer is high in integrity and few in structural defect and can be directly used for manufacturing conductive composite materials and energy storage devices.

The invention relates to the technical field of waste battery recycling and reusing, and discloses a waste lithium ion battery cascade recycling and reusing method and system.The method comprises the steps that firstly, feature information of waste lithium ion batteries is collected, grading is conducted according to the aging degrees of the batteries, differentiated discharging schemes are designed according to different grades, and discharging is conducted according to the different grades; obtaining first discharge data through precise self-adaptive discharge; and disassembling the waste battery, and determining a corresponding recycling scheme according to characteristic grading of the positive and negative electrode materials to obtain regenerated positive and negative electrode materials. Preparing a new battery by utilizing the regenerated material, testing to obtain second discharge data, and comparing the second discharge data with the first discharge data to evaluate the feasibility of recycling the waste battery; according to the method, the integrated treatment of grading diagnosis, cascade discharge and customized recovery can be realized according to the differentiation characteristics of the waste batteries and materials, the residual value of the batteries is excavated to the maximum extent, and the resource utilization level of the waste batteries is improved.

The present invention relates to the technical field of battery recycling equipment, and in particular to a discharge device for recycling waste lithium batteries. The hoisting assembly includes winches arranged at intervals on a mounting frame, the ropes of the winches slide through the mounting frame, and the ends of the ropes of the winches are respectively connected to immersion frames, and the immersion frames are loaded with placement frames for placing batteries. Through the coordinated operation of the hoisting assembly, the loading and unloading assembly and the deployment assembly, differentiated discharge treatment of waste lithium batteries is achieved; by using the winch and the multi-stage telescopic cylinder in conjunction with the independent immersion frame and placement frame structure, targeted discharge can be performed on batteries with different remaining power conditions; at the same time, the loading and unloading assembly supports the independent transportation of batteries before and after discharge, providing guarantees for continuous and batch operations, and the deployment assembly can adjust the brine ratio in real time to ensure a consistent electrolyte environment during the discharge process, thereby improving the stability of the discharge effect and the resource recovery rate.

The invention relates to the technical field of lithium ion power battery recycling, and discloses a lithium ion power battery echelon utilization auxiliary analysis method and system, and the method comprises the steps: obtaining the operation parameter data of a decommissioned battery pack, analyzing the characteristics of a single battery, and confirming an echelon utilization mode (capacity recombination or internal resistance equalization); performing initial capacity and internal resistance grouping based on the mode, and generating adjustment data through capacity attenuation trajectory matching and internal resistance drift trend analysis; performing electrochemical state degradation prediction on the internal resistance adjustment data, and constructing an echelon utilization comprehensive strategy in combination with the adjustment data; and collecting strategy execution feedback data, evaluating a performance matching degree and iteratively optimizing the strategy. The system comprises a mode identification module, a capacity recombination module, an internal resistance balancing module, a strategy optimization module and a feedback execution module. According to the method, through multi-dimensional feature analysis, dynamic grouping, accurate prediction and closed-loop optimization, the efficiency and safety of echelon utilization of the retired batteries are improved, and the method is suitable for a recycling scene of the lithium ion power batteries.

The invention discloses a method for recovering a PVDF (Polyvinylidene Fluoride)-containing positive electrode material from a waste lithium iron phosphate battery and preparing fluorine-doped lithium iron phosphate, and belongs to the technical field of waste battery recovery. The method comprises the following steps: discharging and disassembling waste lithium iron phosphate batteries to separate out positive plates; soaking the positive plate in hot water, and separating to obtain an invalid lithium iron phosphate positive electrode material containing PVDF and an aluminum foil; the preparation method comprises the following steps: drying and grinding the PVDF-containing invalid lithium iron phosphate positive electrode material into powder, uniformly mixing the powder with LiOH, and calcining in a non-oxidizing atmosphere to obtain the fluorine-doped lithium iron phosphate. According to the method, PVDF in the failed lithium iron phosphate material is fully utilized, the failed lithium iron phosphate positive electrode material can be efficiently repaired, the fluorine-doped lithium iron phosphate positive electrode material with better electrochemical performance is obtained, and the method is simple in process, convenient to operate and efficient.

The invention discloses a waste lithium battery pack recovery residual value evaluation system, and the system comprises an appearance screening module which is used for scanning to obtain battery pack shell data and electrode connection integrity data, and dividing a lithium battery pack into a complete battery pack and a damaged battery pack; the residual value grading evaluation module constructs a complete battery pack evaluation model, and divides a complete battery pack into a directly reusable battery and a to-be-disassembled complete battery based on a residual value evaluation result; the disassembly scheme generation module evaluates the damaged battery pack and generates a disassembly scheme based on the three-level disassembly decision tree; the material value classification module divides a to-be-disassembled complete battery and a damaged battery pack into batteries with high recovery value and batteries with low recovery value; and the comprehensive residual value evaluation module adds a weight value to the obtained residual value evaluation result to obtain a comprehensive residual value evaluation result. The method has the advantages that efficient and accurate battery recovery and maximum utilization of resources are realized through appearance screening and disassembly scheme generation in combination with material value analysis and market dynamic adjustment.

The invention belongs to the technical field of battery recycling equipment, and particularly relates to a battery shifting and conveying device which comprises a shifting conveying line and a shifting mechanism, the shifting conveying line comprises a fixed rail and a movable rail which extend along the X axis and are oppositely arranged, the fixed rail and the movable rail are used for bearing batteries, and the movable rail can be controlled to be close to or away from the fixed rail; the material stirring mechanism comprises a plurality of stirring rods which are arranged at preset intervals in the extending direction of the fixed rail, the stirring rods can swing up and down relative to the material stirring conveying line and can synchronously move in a reciprocating mode relative to the material stirring conveying line, and the stirring rods can be controlled to swing downwards to be horizontally arranged above the material stirring conveying line. According to the battery shifting device, the shifting rod which can horizontally move in a reciprocating mode and swing up and down is used for pushing the batteries, so that the moving distance of the batteries each time can be accurately controlled, it is ensured that the batteries can accurately move to the corresponding stations, a positioning mechanism does not need to be additionally arranged, and therefore the cost of equipment is reduced.

The invention relates to the technical field of battery recycling, and discloses a sorting method, system and equipment for retired lithium ion batteries and a medium. The sorting method comprises the steps that use data of the retired lithium ion batteries in the service period are obtained; obtaining a capacity loss curve used for representing the capacity loss rate of the retired lithium ion battery in the service period and a capacity increment curve used for representing the internal aging mechanism of the retired lithium ion battery in the service period; inputting the capacity increment curve of the decommissioned lithium ion battery and a nonlinear loss area in the capacity loss curve into the trained LSTM model, predicting to obtain a future capacity attenuation path of the decommissioned lithium ion battery, and identifying a sudden change point of the capacity attenuation rate of the decommissioned lithium ion battery from the capacity attenuation path; and according to the residual capacity of the decommissioned lithium ion battery and the abrupt change point of the capacity fading rate of the decommissioned lithium ion battery, evaluating the secondary service potential of the decommissioned lithium ion battery so as to complete the sorting of the decommissioned lithium ion battery.

The utility model discloses a grid casting device for waste lead storage battery recovery, particularly relates to the technical field of grid casting, and comprises a portal frame, a smelting furnace is fixedly mounted in the middle of the portal frame, and a plurality of hydraulic telescopic rods are fixedly mounted on the top wall of the portal frame. The slag salvaging device is arranged, the second motor drives the rotating shaft rod to rotate, the rotating shaft rod drives the auger plate to rotate, and therefore lead liquid mixed with impurities is driven to enter the fixing cylinder through the liquid inlet hole and then is discharged from the liquid outlet pipe under conveying of the auger plate, and the discharged lead liquid falls into the conical collecting cylinder below. Impurities are separated from the lead liquid through filtering of the filtering holes, so that the cleaning work of the impurities in the lead liquid is completed; and meanwhile, a hydraulic telescopic rod, a first motor, a gear, an outer gear ring, a rotating disc and a mounting disc can drive the slag salvaging device to do up-and-down lifting motion and rotate in the smelting furnace, the slag salvaging range of the slag salvaging device is enlarged, and impurities in the lead liquid can be cleaned more thoroughly.

The invention discloses a method for efficiently separating and recycling a lithium element from waste lithium iron phosphate, and belongs to the technical field of battery recycling. The method comprises the following steps: firstly, obtaining waste lithium iron phosphate powder from the waste lithium iron phosphate battery, then accurately calculating the optimal pH value of a reaction system at a real-time temperature according to the leaching reaction temperature and related thermodynamic data, introducing a low-concentration phosphate solution in the leaching reaction, and regulating and controlling the pH value of the system to be optimal, so as to obtain the high-purity lithium iron phosphate battery. The method ensures that most iron ions can be effectively precipitated in the form of iron phosphate in the reaction process, further realizes high-efficiency separation of lithium and iron elements, and finally can recover high-purity lithium phosphate by adjusting the pH value of filtrate and adding a saturated phosphate solution. According to the method, the corresponding optimal pH values at different reaction temperatures can be accurately calculated according to the reaction temperatures and related thermodynamic data, so that a large amount of early-stage exploration experiment cost and time are saved, the overall production efficiency is improved, and the process universality is enhanced.

The invention provides a battery replacement control method and a battery replacement system for electric mechanical equipment, and the method comprises the steps: controlling a battery replacement mechanical arm to lift a battery pack to be replaced from a battery cabin to a preset position I after the connection of the battery replacement mechanical arm and the battery pack is completed; the battery replacement mechanical arm is controlled to move the battery pack needing to be replaced from the first preset position to a battery recycling area of the battery replacement platform, and meanwhile instruction actions for controlling the battery replacement mechanical arm are recorded; the battery transposition platform is controlled to exchange positions of the new battery pack to be replaced and the battery pack to be replaced, so that the new battery pack to be replaced is moved to the position of a battery recycling area; the battery replacing mechanical arm is controlled to reversely execute the recorded instruction action, and the new battery pack to be replaced is placed at the first preset position; the battery replacing mechanical arm is controlled to move the new battery pack to be replaced from the first preset position into the battery bin; according to the invention, automatic battery replacement of the electric engineering machinery can be realized, the battery replacement efficiency and the battery replacement accuracy are improved, safety accidents are avoided, and the environmental adaptability of the battery replacement equipment is improved.

The invention discloses a full-life-cycle intelligent management system and an echelon utilization method of a battery replacement type power battery. The full-life-cycle intelligent management system comprises a full-life-cycle intelligent digital management system, a power battery application system, a retired battery echelon utilization system and a waste battery recycling system, the full-life-cycle intelligent digital management system comprises a battery identification module, a data storage module, a data analysis module and a large database module. Through data acquisition and analysis of the full-life-cycle intelligent digital management system, power battery application, decommissioned battery disassembly and recombination, recombined battery echelon utilization and waste battery resource recycling are integrated, full-life-cycle management of the power battery is achieved, the tail end barrier of development of the new energy industry is solved, and the development efficiency of the new energy industry is improved. The high-value application of the power battery is improved, the environmental pressure of local solid wastes is solved, and the sustainable development of local waste production enterprises and industries is ensured.

The invention belongs to the field of waste battery recovery, and discloses a waste lithium ion battery positive and negative electrode material recovery method and device and a product, and the method specifically comprises the following steps: pre-treating a waste lithium ion battery to obtain a mixed material of the positive electrode material and the negative electrode material, and then mixing the mixed material with eutectic salt to obtain a to-be-separated mixture; the density of the eutectic salt ranges from 2.5 g / cm < 3 > to 3.5 g / cm < 3 >; and heating the to-be-separated mixture to be above the eutectic point of the eutectic salt, collecting an upper-layer solid substance to obtain a regenerated negative electrode material, and collecting a lower-layer solid substance to obtain a regenerated positive electrode material. The co-molten salt with the density between that of the positive electrode material and that of the negative electrode material can enable the negative electrode material to float and the positive electrode material to sink, so that separation and regeneration of the positive electrode material and the negative electrode material of the waste lithium ion battery are effectively realized, subsequent reutilization is facilitated, and the method has the advantages of simple process and low cost and is suitable for batch production.