Full-life-cycle intelligent management system and echelon utilization method of battery replacement type power battery

Abstract

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.

Description

Technical Field

[0001] The present invention relates to a power battery management system and a cascade utilization method, and in particular to a full life cycle intelligent management system and a cascade utilization method for battery-swap power batteries. Background Art

[0002] According to the cycle life test standards for power batteries in new energy vehicles, when the battery capacity of a power battery decays to less than 80% of its initial capacity, the power battery must be retired from the new energy vehicle. This portion of the battery still has a high level of residual energy and can be downgraded for use in other areas, thereby fully realizing its residual value. After the remaining energy is fully utilized, it can be disposed of and recycled, maximizing the benefits of the circular economy. However, selecting suitable scenarios for the cascade utilization of retired power batteries is a comprehensive evaluation issue, and there are currently many difficulties and challenges. For example, different internal and external structural designs of power batteries, module connection methods, etc., all of which make it impossible to scale up the subsequent disassembly work. At the same time, most current power batteries lack relevant upstream data, their sources cannot be traced, and it is impossible to correctly evaluate the battery's life and value, resulting in frequent safety accidents. As a result, my country's power battery industry is still in the initial stage of development, and there are no clear regulations on how to carry out cascade utilization.

[0003] Invention patent CN 119001451 A discloses a feasibility evaluation method and system for the cascade utilization of an entire group of retired power batteries. This method can evaluate key indicators such as the appearance, capacity, and safety of an entire group of retired batteries to determine whether the retired batteries can be recycled as a whole, providing data support for the cascade utilization of power batteries and improving the technical, economic, and safety value of cascade utilization. However, this method requires sequential analysis of the appearance, static voltage, internal resistance, insulation, leakage, remaining capacity, and temperature of the retired power battery pack. If all analysis results meet the requirements, the cascade utilization of the entire group of retired power batteries is feasible. However, if any analysis result does not meet the requirements, the cascade utilization of the entire group of retired power batteries is not feasible. Considering the characteristics of retired batteries, there is a high probability that further disassembly and reassembly will be required after the overall module inspection is completed, which significantly increases the cost of sorting the power batteries for cascade utilization, resulting in the economic benefits of cascade utilization of retired batteries being far inferior to those of new batteries. Summary of the Invention

[0004] Purpose of the invention: In response to the above problems, the present invention proposes a full life cycle intelligent management system and cascade utilization method for battery-swap power batteries, which can improve the lifespan and application value of power batteries throughout their life cycle.

[0005] Technical Solution: The technical solution adopted by this invention is a full life cycle intelligent management system for battery-swap power batteries. This system manages the full life cycle of battery-swap power batteries equipped with a battery management system (BMS), including a full life cycle intelligent digital management system, a power battery application system, a retired battery cascade utilization system, and a waste battery recycling and disposal system.

[0006] The full life cycle intelligent digital management system is used for the transmission, storage and analysis of data during the full life cycle of the power battery;

[0007] The power battery application system is used for real-time data collection and transmission during the power battery application process; the power battery application system includes a power battery (including a BMS), a battery swap station (including a station control system), and an on-board system (including an on-board control system). The power battery BMS communicates with the station control system and the on-board control system of the battery swap station in pairs; the full life cycle intelligent digital management system communicates with the power battery BMS and the station control system of the battery swap station;

[0008] The retired battery cascade utilization system is used to disassemble and reassemble power batteries that meet the requirements based on the analysis results of the full life cycle intelligent digital management system to achieve cascade utilization;

[0009] The waste battery recycling and disposal system is used to recycle and process power batteries that meet the requirements based on the analysis results of the full life cycle intelligent digital management system;

[0010] The full life cycle intelligent digital management system communicates with the power battery application system, retired battery recycling system and waste battery recycling and disposal system to interactively share full life cycle data of power batteries.

[0011] A solution for a full life cycle intelligent digital management system is: including a battery identification module, a data storage module, a data analysis module and a large database module;

[0012] The battery identification module is used to provide an identity for the power battery and obtain the corresponding full life cycle data of the power battery through the identity. The battery module and battery cell are each provided with a unique identity.

[0013] The data storage module communicates with the data systems of the battery identification module, the power battery application system, the retired battery cascade utilization system, and the waste battery recycling and disposal system to obtain and update the full life cycle data of the power battery;

[0014] The data analysis module is used to: generate an analysis curve for any parameter collected and stored during the battery operation process based on the full life cycle data of the power battery in the data storage module, including: the voltage curve, current curve, and temperature curve of the battery charging and discharging process, the SOC curve and battery attenuation curve during the battery operation process; and mark faults and warnings that occur during the application process based on the battery parameter data of different application scenarios and the safety threshold of each parameter in the large database module;

[0015] The large database module has built-in battery parameter data for different application scenarios and safety thresholds of each parameter.

[0016] Furthermore, the full life cycle data of the power battery includes the basic information of the battery, parameter indicators at the time of leaving the factory, and data during the application process, including: capacity, voltage, temperature, internal resistance, SOH, insulation condition, charge and discharge parameters, cumulative battery replacement power, cumulative number of battery replacements, and real-time alarm parameters.

[0017] Preferably, the data analysis module also includes software for calculating economic performance indicators of power batteries throughout their life cycle, including internal rate of return and payback period.

[0018] The battery parameter data for different application scenarios include: battery cells, battery modules, and battery pack parameters for mining trucks, heavy trucks, new energy vehicles, passenger vehicles, low-speed logistics vehicles, and energy storage batteries.

[0019] A design scheme of the retired battery recycling system is: including a battery pack disassembly system, a module disassembly system and a monomer reassembly system;

[0020] The module code scanning and sorting system in the battery pack disassembly system communicates with the full life cycle intelligent digital management system. The module code scanning and sorting system sorts the battery modules obtained after the battery pack is disassembled according to the module sorting parameters set by the full life cycle intelligent digital management system.

[0021] The single-cell scanning and sorting system in the module disassembly system communicates with the full life cycle intelligent digital management system. The single-cell scanning and sorting system sorts the single cells obtained after module disassembly according to the single-cell sorting parameters set by the full life cycle intelligent digital management system, and groups them according to the principle of similar capacity.

[0022] The monomer reassembly system assembles a new battery pack, and the new battery pack is equipped with a new battery management system BMS and re-coded.

[0023] The waste battery recycling and disposal system includes a waste lithium battery pretreatment system, a carbonization system and a wet extraction system; the waste lithium battery pretreatment system first scans the identification of the battery cells entering the waste battery recycling and disposal system, transmits the full life cycle data of the single battery to the full life cycle intelligent digital management system, and then performs discharge and crushing processing.

[0024] The present invention proposes a cascade utilization method for the full life cycle intelligent management system of the battery-swap type power battery, which adopts the method of first module cascade and then single cell cascade for step-by-step utilization, including the following steps:

[0025] (1) Obtain battery module parameters and application safety thresholds for the target echelon scenario; analyze the full life cycle data of retired battery modules to obtain analysis curves of key parameters;

[0026] (2) Determine whether the extreme value points in the analysis curve of the key parameters of the retired battery module meet the battery module parameters and application safety thresholds of the target echelon scenario; if the requirements are met, determine that the target module is an echelonable module for the target echelon scenario; if the requirements are not met, enter the next level of target echelon scenario judgment; if it is finally shown that the retired battery module does not meet the set target echelon scenario, enter the module disassembly process to obtain the battery cell;

[0027] (3) Determine whether the extreme value points in the analysis curve of the key parameters of the retired battery cells meet the battery cell parameters and application safety thresholds of the target echelon scenario; if the requirements are met, determine that the target cell is a cell that can be recycled in the target echelon scenario; if the requirements are not met, enter the waste battery recycling and disposal process;

[0028] (4) The sorted battery cells are reorganized based on the parameter consistency principle to form a new battery pack, and a new identity is set for the new battery pack.

[0029] Preferably, the cascade utilization scenarios include low-speed electric vehicle applications, energy storage applications, and base station backup power; the application scenarios of the recombinant battery pack are then used to calculate the internal rate of return and investment payback period through a full life cycle intelligent digital management system to meet the application scenario requirements for internal rate of return and investment payback period.

[0030] Furthermore, the battery capacity, temperature, pressure, and internal resistance parameters of the battery cell also include the capacity dispersion rate of the battery module and the remaining cycle life of the battery cell.

[0031] Beneficial Effects: Compared with the existing technology, the present invention has the following advantages: By establishing an intelligent digital management system for the entire life cycle of power batteries, the present invention conducts comprehensive data management and analysis on the application of battery-swappable power batteries, the cascade utilization of retired batteries, and the recycling and disposal of waste batteries, thereby more accurately and efficiently improving the lifespan and application value of power batteries. Specifically, it includes:

[0032] (1) The present invention integrates intelligent management systems, power battery applications, retired battery disassembly and reorganization for cascade utilization, and waste battery resource recovery and disposal, thus achieving full life cycle management of power batteries and resolving the end-stage barriers to the development of the new energy industry. This not only improves the high-value application of power batteries, but also resolves the environmental pressure of local solid waste and ensures the sustainable development of local waste-producing enterprises and industries.

[0033] (2) The present invention uses an intelligent data storage module and data analysis module for the entire life cycle of the power battery to record the application parameters and abnormal points of each life cycle of the power battery in real time, providing data support for subsequent cascade utilization and recycling disposal, reducing the complex battery performance testing process and greatly reducing the cost of cascade utilization;

[0034] (3) The present invention uses a large database module of intelligent data on the entire life cycle of power batteries to provide retired batteries with the required battery parameters and safe use thresholds for different cascade utilization scenarios. At the same time, combined with the calculation of economic and technical indicators of cascade utilization, it provides guidance for the selection of cascade scenarios for retired batteries and provides data support for the disassembly, reorganization and grouping of retired batteries, thereby maximizing battery life and increasing the added value of the retired battery cascade process.

[0035] (4) The present invention stores the full life cycle usage data of waste batteries in a large database module of intelligent data, and uses actual application data to correct and optimize the data stored in the database, so that the data in the large database module is closer to the actual use process, further improving the accuracy and guidance of the intelligent digital management system for the full life cycle of power batteries;

[0036] (5) The present invention not only solves the environmental pressure of local solid waste but also further increases the high added value of power batteries by safely disposing of waste batteries and recovering the high value-added resources therein. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a schematic diagram of the architecture of the full life cycle intelligent management system for the battery-swappable power battery of the present invention;

[0038] Figure 2 It is the process of disassembly and reassembly of retired batteries for cascade utilization;

[0039] Figure 3It is the process of recycling and disposing of waste batteries. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0041] Example 1

[0042] The module diagram of the intelligent management system for the whole life cycle of the battery-swappable power battery of the present invention is as follows: Figure 1 It includes a full life cycle intelligent digital management system 1, a power battery application system 2, a retired battery cascade utilization system 3, and a waste battery recycling and disposal system 4;

[0043] (1) Full life cycle intelligent digital management system 1: The full life cycle intelligent digital management system 1 includes a battery identification system 11 and a data storage module 12, a data analysis module 13 and an application database module 14 of the data management system;

[0044] The power battery is equipped with a battery identification system 11 from the factory. The battery identification serves as the identity of the power battery and can be a QR code or other data carrier. By scanning the data management system of the intelligent digital management system, the full life cycle data of the power battery can be obtained.

[0045] The battery's full life cycle data includes basic battery information, factory parameter indicators, and detailed data records during the application process, such as capacity, voltage, temperature, internal resistance, SOH, insulation condition, charge and discharge parameters, cumulative battery replacement power, cumulative number of battery replacements, real-time alarm parameters and cause analysis, etc.; the battery's full life cycle data can be interactively shared in different data management systems.

[0046] The data storage module 12 communicates with the data management systems of the power battery application system, the retired battery recycling system, and the waste battery recycling and disposal system to obtain the battery operation data in real time and update the data of the battery identification module in real time;

[0047] The data analysis module 13 can work both online and offline, and can generate a periodic change curve for any parameter collected and stored during the battery application process, such as the voltage curve, current curve, and temperature curve during the battery charging and discharging process, or the SOC curve and battery attenuation curve during the battery operation process, as needed. It can also mark special situations such as faults and warnings that occur during the application process.

[0048] The data analysis module 13 also includes software for calculating economic performance indicators of power battery applications throughout their life cycle, including but not limited to internal rate of return, investment payback period, etc.

[0049] The application system big database module 14 has built-in battery parameter data for different application scenarios, including but not limited to the battery cells, battery modules, and battery pack parameters required for different fields such as mining trucks, heavy trucks, different models of new energy vehicles, passenger vehicles, low-speed logistics vehicles, energy storage, etc., as well as the maximum and minimum thresholds for safe use of each parameter; the application scenarios and parameters in the database module have the function of adding or changing.

[0050] (2) Power battery application system 2: The battery-swap power battery application system includes a power battery, a battery-swap station, and an on-board system;

[0051] The power battery is equipped with a battery management system (BMS), which collects, records and transmits data during battery operation in real time, and communicates with the battery swap station control system and the vehicle control system in pairs, to achieve timely warning and feedback of abnormal data and ensure the safe operation of the battery;

[0052] The battery swap station consists of a battery swap system, a charging system, and a station control system. The station control system communicates with the data storage system of the full life cycle intelligent digital management system to upload data parameters of the power battery application process;

[0053] (3) Retired battery recycling system 3: The retired battery recycling system includes a battery pack disassembly system 31, a module disassembly system 32 and a monomer reassembly system 33; Figure 2 Shown, including:

[0054] The battery pack disassembly system 31 includes a battery pack code scanning and identification system 311, a battery pack shell automatic removal system 312, a battery module manual disassembly platform 313, a module manual inspection platform 314, a module code scanning and sorting system 315, and a cascade module transfer system 316; the adjacent systems and platforms are connected by a conveying system and a transfer system;

[0055] The module scanning and sorting system 315 is connected to the full life cycle intelligent digital management system 1, and sorts the disassembled modules according to the parameters set by the management system. After sorting, qualified modules are sent to the cascade module transfer system 316; after sorting, unqualified modules enter the disassembly module transfer system 321;

[0056] The echelon module transfer system 316 is connected to the thermal management integration system 333 of the reorganization system, and the battery pack assembly is carried out after the thermal management system and BMS system are reinstalled;

[0057] The battery module disassembly system 32 includes a disassembly module transfer system 321, a module harness removal system 322, a module side panel cutting system 323, a battery cell dismemberment platform 324, a battery cell scanning and sorting system 325, and an unqualified cell transfer system 326;

[0058] The monomer scanning and sorting system 325 is connected to the full life cycle intelligent digital management system 1, and sorts the disassembled monomers according to the parameters set by the management system, and groups them according to the principle of similar capacity. After grouping, the monomers in the same group are sent to the monomer design and grouping system 331; the unqualified monomers are sent to the unqualified monomer transportation system 326;

[0059] The cell reorganization system 33 includes a cell design and matching system 331, a cell electrical connection system 332, a thermal management integration system 333, a BMS integration system 334 and a battery pack structure assembly system 335, which are connected in sequence, thereby forming a new battery pack (the specific equipment is conventional equipment and will not be described in detail); a new management system and thermal management system are added to the new battery pack, and it is re-coded to communicate information with the reorganized cells, which is conducive to real-time monitoring of the entire life cycle of subsequent battery applications.

[0060] The cascade utilization scenario of recombinant batteries is set based on the analysis of the full life cycle intelligent digital management system1, and the focus is described in the method.

[0061] The cascade utilization system is relatively mature and will not be described in detail here. The present invention uses the data obtained by the intelligent management system to simplify various tests in the cascade utilization process and also guide the direction of cascade utilization.

[0062] (4) Waste battery recycling and disposal system: The waste battery recycling and disposal system 4 includes a waste lithium battery pretreatment system 41, a carbonization system 42 and a wet extraction system 43. The waste battery recycling and disposal process is as follows: Figure 3 shown.

[0063] The waste lithium battery pretreatment system 41 includes a waste monomer discharge device, a crushing device, etc.; the identification of the battery monomer is first scanned, and its full life cycle data is transmitted to the data storage module of the intelligent digital management system, and then the discharge and crushing are carried out.

[0064] The carbonization system 42 includes a drying device, a carbonization device, a black powder separation device, a magnetic separation device, a vortex device, and an exhaust gas treatment device, thereby obtaining battery black powder and resource recovery materials such as iron, copper, and aluminum;

[0065] The wet extraction device 43 mainly includes a feeding device, a conditioning tank, a filtering device and a conveying pump, which are used to separate lithium from black powder to achieve resource utilization.

[0066] Example 2

[0067] The flowchart of the full life cycle cascade utilization method of the battery-swappable power battery of the present invention is as follows: Figure 2 shown.

[0068] The main goal is to establish an intelligent digital management system for the entire life cycle, conduct all-round data management and analysis on the application of swappable power batteries, the cascade utilization of retired batteries, and the recycling and disposal of used batteries, so as to more accurately and efficiently improve the life and application value of power batteries. The following steps are included:

[0069] (1) Data management of power battery application process: During the operation of power batteries, the intelligent digital management system of the entire life cycle communicates with the battery identification system, the battery management system BMS and the battery swap station control system, which can realize the real-time collection and recording of power battery application parameters, comprehensively record the data of the entire life cycle of the battery, and update it to the battery identification system in real time;

[0070] The application scenarios of the power battery mainly include but are not limited to mining trucks, heavy trucks, point-to-point logistics, short-distance transportation in closed places, new energy passenger transportation and other high-frequency, short-distance, high-power consumption scenarios;

[0071] The battery's full life cycle data includes basic battery information, factory parameter indicators, and detailed data records during use, such as capacity, voltage, temperature, internal resistance, SOH, insulation condition, charge and discharge parameters, cumulative battery replacement power, cumulative number of battery replacements, real-time alarm parameters and cause analysis, etc.;

[0072] (2) Management of the cascade utilization process of retired batteries: The cascade utilization process of the power battery is managed through a full life cycle intelligent digital management system, and the cascade utilization is carried out step by step in a method of first module cascade and then single cell cascade. The specific steps are as follows:

[0073] P1: After disassembling the battery pack, first inspect the battery module housing and connectors to determine whether there are obvious physical damages such as scratches, dents, or cracks on the housing, and whether the connectors are oxidized, loose, or damaged. If there are no problems, proceed to the subsequent module echelon process; if not, proceed to the module disassembly process;

[0074] P2: Based on the historical application data of power batteries in the database module of the intelligent digital management system for the entire life cycle and the requirements of relevant standards and specifications, obtain the battery module parameters and application safety thresholds for the target echelon scenario;

[0075] The cascade utilization scenarios include but are not limited to low-speed electric vehicle applications, energy storage applications, base station backup power, etc.

[0076] P3: Analyze the data in the data storage module using the data analysis module of the full life cycle intelligent digital management system to form analysis curves of key parameters;

[0077] The analysis curves of the key parameters include but are not limited to curves and abnormal points showing changes in battery capacity, temperature, pressure, internal resistance, etc. of the battery cell with the number of charge and discharge cycles, so as to further estimate the capacity dispersion rate of the battery module and the remaining cycle life of the battery cell;

[0078] P4: Determine whether the extreme value points in the analysis curve of the key parameters of the retired battery module meet the battery module parameters and application safety thresholds of the target echelon scenario. If the requirements are met, the module identification system will determine that the target module is an echelon-compatible module for this scenario when scanning. If the requirements are not met, the next echelon scenario will be judged and the process will be continued. If it is finally determined that the retired battery module does not meet the set target echelon scenario, the module disassembly process will be started to obtain the battery cell.

[0079] P5: After the module is disassembled, the extreme value points in the analysis curve of the key parameters of the retired battery cells are judged based on the cells to see whether they meet the battery cell parameters and application safety thresholds of the target echelon scenario; if they meet the requirements, when the cell identification system scans, the target cell is judged to be an echelonable cell for this scenario, and the echelonable cells are subsequently classified and stored according to the battery capacity value for easy reorganization; if they do not meet the requirements, they enter the waste battery recycling and disposal process.

[0080] P6: The sorted battery cells are reassembled based on the principle of parameter consistency to form a new battery pack. A new battery management system and thermal management system are installed in the new battery pack and then re-coded. Communication with the reassembled cells is carried out to facilitate real-time data management of subsequent battery applications.

[0081] The application scenarios of the recombinant battery pack are calculated by the economic performance indicator calculation software of the data analysis module of the full life cycle intelligent digital management system, and ultimately determined based on parameters such as the required internal rate of return and investment payback period, to maximize the value of battery cascade utilization;

[0082] Further:

[0083] The battery coding, recycled battery identification, and disassembly and reassembly methods of the battery packs and modules all meet the requirements of GB / T-34015 for recycling and reuse of automotive power batteries;

[0084] The discharge capacity of the battery module and single cell for the low-speed vehicle application scenario should be no less than 60% and 65% of the factory nominal capacity under working conditions respectively;

[0085] The discharge capacity of the battery modules and cells for energy storage and other static applications should be no less than 50% and 55% of the factory nominal capacity under working conditions, respectively;

[0086] The parameters for the consistency screening of modules and cells that can be cascaded include but are not limited to capacity, internal resistance, voltage, etc. The cell capacity difference is ≤3%; the internal resistance difference is ≤5%, and the DC internal resistance is not higher than 1.5 times the factory specification under working conditions;

[0087] The estimated remaining battery cycle life of the recyclable battery modules and cells is ≥500 times.

[0088] (3) Management of the waste battery recycling and disposal process: After the power battery is recycled, it finally enters the waste battery recycling and disposal system in the form of battery cells. First, the identification system of the battery cell is scanned, and its full life cycle data is transmitted to the data storage module of the intelligent digital management system. After being processed by the data analysis module according to needs, it can be exported or imported into the database module to form a large database of power battery full life cycle application parameters;

[0089] The discharge capacity of the retired battery cells entering the recycling and disposal process is less than 50% of the factory nominal capacity under working conditions;

[0090] The recycling and disposal method of retired battery cells is as follows: the battery cells are first subjected to acid leaching and discharge, and then two-stage crushing is carried out, and the electrolyte is recovered in this process. After crushing, the battery cells enter the carbonization system for carbonization treatment, and finally, battery black powder, iron, copper, aluminum and other resource recovery materials are obtained through separation processes such as black powder separation, magnetic separation, and vortex separation.

[0091] The battery black powder is subjected to a wet extraction method to obtain a lithium carbonate product, thereby realizing resource recovery of the power battery.

[0092] In order to solve the problems of difficulty in cascade utilization, low economic benefits and high safety risks of existing retired batteries, the present invention fully utilizes the characteristics of consistent battery model parameters of battery swapping pure electric vehicles and centralized charging at battery swapping stations, sets a battery management module on the power battery, and connects it with the on-board remote terminal and the battery swapping station detection module through the intelligent management system of the entire system, establishes a power battery application database for each group of power battery cells and modules, and designs a step-by-step cascade utilization plan based on the capacity decay curve of the cell, the capacity discrete rate of the module cell and the investment return model of the whole life cycle. Finally, the power batteries that have reached the end of their life can be safely disposed of and resources recycled, thereby improving the lifespan and application value of the power battery throughout its life cycle.

Claims

1. A full life cycle intelligent management system for battery-swappable power batteries, characterized by: The system provides full life cycle management for swappable power batteries equipped with a battery management system (BMS), including a full life cycle intelligent digital management system, a power battery application system, a retired battery cascade utilization system, and a waste battery recycling and disposal system. The full life cycle intelligent digital management system is used for the transmission, storage and analysis of data during the full life cycle of the power battery; The power battery application system is used for real-time data collection and transmission during the power battery application process; the power battery application system includes power batteries, battery swap stations and vehicle-mounted systems. The power battery BMS communicates with the station control system and vehicle-mounted control system of the battery swap station in pairs; the full life cycle intelligent digital management system communicates with the power battery BMS and the station control system of the battery swap station; The retired battery cascade utilization system is used to disassemble and reassemble power batteries that meet the requirements based on the analysis results of the full life cycle intelligent digital management system to achieve cascade utilization; The waste battery recycling and disposal system is used to recycle and process power batteries that meet the requirements based on the analysis results of the full life cycle intelligent digital management system; The full life cycle intelligent digital management system communicates with the power battery application system, retired battery recycling system and waste battery recycling and disposal system to interactively share full life cycle data of power batteries.

2. The intelligent management system for the entire life cycle of a battery-swappable power battery according to claim 1, characterized in that: The full life cycle intelligent digital management system includes a battery identification module, a data storage module, a data analysis module and a large database module; The battery identification module is used to provide an identity for the power battery and obtain the full life cycle data corresponding to the power battery through the identity; Both battery modules and battery cells have unique identification tags; The data storage module communicates with the data systems of the battery identification module, the power battery application system, the retired battery cascade utilization system, and the waste battery recycling and disposal system to obtain and update the full life cycle data of the power battery; The data analysis module is used to generate an analysis curve for any parameter collected and stored during the battery operation process based on the full life cycle data of the power battery in the data storage module, including: a voltage curve, a current curve, and a temperature curve during the battery charging and discharging process, and a SOC curve and a battery attenuation curve during the battery operation process; Based on the battery parameter data of different application scenarios and the safety thresholds of each parameter in the large database module, faults and warnings that occur during the application process are marked; The large database module has built-in battery parameter data for different application scenarios and safety thresholds of each parameter.

3. The intelligent management system for the entire life cycle of a battery-swappable power battery according to claim 2, characterized in that: The full life cycle data of the power battery includes the basic information of the battery, parameter indicators at the time of leaving the factory, and data during the application process, including: capacity, voltage, temperature, internal resistance, SOH, insulation condition, charge and discharge parameters, cumulative battery replacement power, cumulative number of battery replacements, and real-time alarm parameters.

4. The intelligent management system for the entire life cycle of a battery-swappable power battery according to claim 2, characterized in that: The data analysis module also includes software for calculating economic performance indicators of power batteries throughout their life cycle, including internal rate of return and payback period.

5. The intelligent management system for the entire life cycle of a battery-swappable power battery according to claim 2, characterized in that: The battery parameter data for different application scenarios include: battery cells, battery modules, and battery pack parameters for mining trucks, heavy trucks, new energy vehicles, passenger vehicles, low-speed logistics vehicles, and energy storage batteries.

6. The intelligent management system for the entire life cycle of a battery-swappable power battery according to claim 1, characterized in that: The retired battery recycling system includes a battery pack disassembly system, a module disassembly system and a monomer reassembly system; The module code scanning and sorting system in the battery pack disassembly system communicates with the full life cycle intelligent digital management system. The module code scanning and sorting system sorts the battery modules obtained after the battery pack is disassembled according to the module sorting parameters set by the full life cycle intelligent digital management system. The single-cell scanning and sorting system in the module disassembly system communicates with the full life cycle intelligent digital management system. The single-cell scanning and sorting system sorts the single cells obtained after module disassembly according to the single-cell sorting parameters set by the full life cycle intelligent digital management system, and groups them according to the principle of similar capacity. The monomer reassembly system assembles a new battery pack, and the new battery pack is equipped with a new battery management system BMS and re-coded.

7. The intelligent management system for the entire life cycle of a battery-swappable power battery according to claim 1, characterized in that: The waste battery recycling and disposal system includes a waste lithium battery pretreatment system, a carbonization system and a wet extraction system; the waste lithium battery pretreatment system first scans the battery cells entering the waste battery recycling and disposal system, transmits the full life cycle data of the single battery to the full life cycle intelligent digital management system, and then performs discharge and crushing processing.

8. A cascade utilization method applied to the full life cycle intelligent management system of the battery-swappable power battery according to claim 1, characterized in that: The method of first module tier and then monomer tier is adopted for step-by-step utilization, including the following steps: (1) Obtain battery module parameters and application safety thresholds for the target echelon scenario; analyze the full life cycle data of retired battery modules to obtain analysis curves of key parameters; (2) Determine whether the extreme value points in the analysis curve of the key parameters of the retired battery module meet the battery module parameters and application safety thresholds of the target echelon scenario; if the requirements are met, determine that the target module is an echelonable module for the target echelon scenario; if the requirements are not met, enter the next level of target echelon scenario judgment; if it is finally shown that the retired battery module does not meet the set target echelon scenario, enter the module disassembly process to obtain the battery cell; (3) Determine whether the extreme value points in the analysis curve of the key parameters of the retired battery cells meet the battery cell parameters and application safety thresholds of the target echelon scenario; if the requirements are met, determine that the target cell is a cell that can be recycled in the target echelon scenario; if the requirements are not met, enter the waste battery recycling and disposal process; (4) The sorted battery cells are reorganized based on the parameter consistency principle to form a new battery pack, and a new identity is set for the new battery pack.

9. The cascade utilization method according to claim 8, characterized in that: The analysis curves of the key parameters include: battery capacity, temperature, pressure, internal resistance parameters of the battery cell, as well as the capacity dispersion rate of the battery module and the remaining cycle life of the battery cell.

10. The cascade utilization method according to claim 8, characterized in that: The cascade utilization scenarios include low-speed electric vehicle applications, energy storage applications, and base station backup power in sequence; the application scenarios of the recombinant battery pack are then used to calculate the internal rate of return and investment payback period through the full life cycle intelligent digital management system to meet the application scenario requirements for internal rate of return and investment payback period.

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