Carbon accounting oriented environment self-adaptive wide-proportion lithium sodium-lead acid-solid hybrid energy storage control method and carbon accounting oriented environment self-adaptive wide-proportion lithium sodium-lead acid-solid hybrid energy storage control system

Abstract

The invention discloses a carbon accounting-oriented environment-adaptive wide-proportion lithium sodium-lead acid-solid hybrid energy storage control method and system, which can dynamically adjust energy storage and discharge strategies based on carbon price by collecting environment parameters, carbon price data and real-time state parameters of various batteries in real time, realize maximum utilization of carbon assets, and meanwhile, realize energy conservation and emission reduction. The lithium-sodium ion mixing ratio of the lithium-sodium battery is adaptively adjusted according to environmental parameters, so that an efficient and stable operation state can be kept at different environmental temperatures; when the lithium-sodium battery breaks down, the battery management system can be quickly switched to the solid battery for power supply, so that the continuity of power supply is guaranteed; through the function of monitoring the health state of the lead-acid battery and the interface impedance of the solid battery in real time, maintenance or replacement reminding is sent out in time, and the service life of the battery is effectively prolonged; through docking with a carbon trading platform API, the battery management system can obtain real-time carbon price data, and the intelligent level of the battery management system is improved.

Description

Technical Field

[0001] This invention relates to the field of energy storage battery technology, and in particular to a carbon accounting-guided, environmentally adaptive, wide-ratio lithium-sodium-lead-acid-solid hybrid energy storage control method and system. Background Technology

[0002] With the advancement of the "dual carbon" goals, energy storage battery management systems have become crucial for energy transition, and their functions are expanding from energy storage to carbon asset management. However, existing energy storage technologies still have significant shortcomings in terms of performance, safety, cost, and carbon accounting integration. At the battery technology level, existing hybrid solutions each have limitations: First, lithium-sodium hybrid batteries (such as AB batteries for vehicles) mostly use a fixed ratio, which cannot adaptively adjust according to ambient temperature, leading to a sharp drop in performance under extreme temperatures. Furthermore, they do not integrate solid-state batteries and lead-acid cells, making it difficult to balance safety and cost. Second, simple lithium-lead parallel solutions lack intelligent coordination; lead-acid batteries are prone to overcharging and over-discharging, have short lifespans, and the overall battery management system has poor safety and low-temperature performance. Third, while single solid-state battery solutions offer high safety, they are expensive and have poor low-temperature performance, making them difficult to scale up independently. Fourth, common photovoltaic energy storage battery management systems have low integration, lack intelligent optimization, and have low operating efficiency. At the carbon asset level, existing energy storage battery management systems generally lack deep integration with the carbon trading market: they have neither a direct data interface to obtain real-time carbon prices nor the ability to dynamically adjust charging and discharging strategies based on carbon prices, thus failing to convert carbon emission reductions into user benefits and losing their core value as carbon assets.

[0003] Therefore, there is an urgent need in this field for an intelligent hybrid energy storage battery management system and control method that can integrate the advantages of multi-battery systems, have environmental adaptability, and deeply coordinate carbon accounting, in order to solve the shortcomings of existing technologies in terms of safety, environmental adaptability, economy, and carbon assetization. Summary of the Invention

[0004] To address the shortcomings of existing technologies, such as the lack of a direct data interface between the battery management system and the carbon accounting battery management system, and the inability to dynamically adjust the battery energy storage and discharge strategy based on carbon prices, this invention provides a solution.

[0005] To achieve the above objectives, this invention provides a carbon accounting-guided, environmentally adaptive, wide-proportion lithium-sodium-lead-acid-solid hybrid energy storage control method, comprising the following steps: S1, Battery Management System Initialization, Real-time Acquisition of Environmental Parameters and Carbon Price Data, as well as Real-time Status Parameters of Lithium-Sodium Batteries, Lead-Acid Batteries, and Solid-State Batteries; S2, based on the real-time carbon price data, dynamically adjust the power supply strategy of the lithium-sodium battery, the lead-acid battery, and the solid battery, prioritizing energy storage when the carbon price is high and prioritizing discharge when the carbon price is low; S3, based on the real-time environmental parameters and the real-time state parameters of the lithium-sodium battery, the lead-acid battery, and the solid-state battery, the lithium-sodium battery, the solid-state battery, and the lead-acid battery are coordinated to store or discharge energy. S4. Repeat steps S1-S3 to achieve full-cycle adaptive optimization and carbon asset maximization.

[0006] As an improvement of the present invention, in S3, the lithium-sodium battery serves as the main power source, and the lithium-sodium battery adjusts the ratio of lithium ions to sodium ions according to environmental parameters. The lead-acid battery and the solid-state battery are in a dormant or low-power operation state. When environmental parameters change, the battery management system adjusts the operating state of the lead-acid battery and the solid-state battery according to the degree of change.

[0007] As an improvement of the present invention, the lithium-sodium ion mixing ratio of the lithium-sodium battery is dynamically adjusted from 1:1 to 5:1 based on the ambient temperature, including: When the ambient temperature is ≤-20℃, the lithium-sodium ratio is 4:1~5:1; When the ambient temperature is between -20℃ and 0℃, the lithium-sodium ratio is 2.5:1 to 3.5:1. When the ambient temperature is between 0℃ and 25℃, the lithium-sodium ratio is 1.8:1 to 2.5:1. When the ambient temperature is >25℃, the lithium-sodium ratio is 1:1~1.5:1.

[0008] As an improvement of the present invention, when a fault is detected in the lithium-sodium battery, the power supply to the lithium-sodium battery is immediately cut off, and the solid battery is controlled to bear the entire power supply load.

[0009] As an improvement of the present invention, the health status of the lead-acid battery and the interface impedance of the solid battery are monitored in real time, and a maintenance or replacement reminder is issued when the battery health value of the lead-acid battery and the interface impedance value of the solid battery reach the threshold.

[0010] As an improved embodiment of the present invention, the carbon accounting collaborative control algorithm dynamically adjusts the energy storage strategy according to the carbon price: when the carbon price is higher than a first threshold, the lithium-sodium battery, the lead-acid battery, and the solid battery prioritize energy storage; when the carbon price is lower than the first threshold, the lithium-sodium battery, the lead-acid battery, and the solid battery prioritize discharge.

[0011] As an improvement of the present invention, the battery management system is connected to the carbon trading platform API and dynamically adjusts the energy storage strategy according to the real-time carbon price.

[0012] As an improvement of the present invention, the solid-state battery uses sulfide as electrolyte, the positive electrode of the solid-state battery is coated with nickel-rich material, and the negative electrode is made of silicon-carbon composite material.

[0013] As an improvement of the present invention, the carbon emission reduction of the battery management system and the carbon credit gain based on the real-time carbon price are calculated and displayed in real time.

[0014] This invention also provides a carbon accounting-oriented, environmentally adaptive, wide-proportion lithium-sodium-lead-acid-solid hybrid energy storage system, comprising: The data acquisition module is used to collect environmental parameters, carbon price data, and real-time status parameters of lithium-sodium batteries, lead-acid batteries, and solid-state batteries in real time. The strategy adjustment module is connected to the data acquisition module. Based on real-time carbon price data, it dynamically adjusts the power supply strategy of lithium-sodium batteries, lead-acid batteries, and solid batteries. When the carbon price is high, energy storage is given priority, and when the carbon price is low, discharge is given priority. The coordinated control module is connected to the data acquisition module and the strategy adjustment module. Based on real-time environmental parameters and the real-time state parameters of the lithium-sodium battery, lead-acid battery, and solid-state battery, it coordinates the lithium-sodium battery, solid-state battery, and lead-acid battery to store or discharge energy. The cyclic execution module, connected to the data acquisition module, the strategy adjustment module, and the collaborative control module, is used to repeatedly execute the steps of data acquisition, strategy adjustment, and collaborative control to achieve full-cycle adaptive optimization and carbon asset maximization. The fault handling module is used to immediately cut off the power supply to the lithium-sodium battery when a fault is detected, and to control the solid battery to bear the entire power supply load. The monitoring and reminder module is used to monitor the health status of lead-acid batteries and the interface impedance of solid batteries in real time. When the battery health value of lead-acid batteries and the interface impedance value of solid batteries reach the threshold, a maintenance or replacement reminder is issued. The carbon price docking module is used to connect with the carbon trading platform API to obtain real-time carbon price data for use by the strategy adjustment module. The battery configuration module is used to configure the solid-state battery to use sulfide as the electrolyte, the positive electrode of the solid-state battery to be coated with nickel-rich material, and the negative electrode to be made of silicon-carbon composite material.

[0015] The beneficial effects of this invention are as follows: Compared with the prior art, the carbon accounting-oriented, environment-adaptive, wide-ratio lithium-sodium-lead-acid-solid hybrid energy storage control method and system provided by this invention, through real-time acquisition of environmental parameters, carbon price data, and real-time status parameters of various batteries, can dynamically adjust energy storage and discharge strategies based on carbon prices to maximize the utilization of carbon assets. Simultaneously, it adaptively adjusts the lithium-sodium ion mixing ratio of the lithium-sodium battery according to environmental parameters to ensure efficient and stable operation under different environmental temperatures. When the lithium-sodium battery fails, the battery management system can quickly switch to solid-state battery power supply to ensure power continuity. This invention, through real-time monitoring of the health status of lead-acid batteries and the interface impedance of solid-state batteries, promptly issues maintenance or replacement reminders, effectively extending battery life and reducing operation and maintenance costs. Through API integration with the carbon trading platform, the battery management system can obtain real-time carbon price data, further enhancing the intelligence level of the battery management system. Attached Figure Description

[0016] Figure 1 This is a flowchart of the method of the present invention. Detailed Implementation

[0017] To more clearly illustrate the present invention, the invention will be further described below with reference to the accompanying drawings.

[0018] In the following description, specific examples are given to provide a more in-depth understanding of the invention. It is obvious that the described embodiments are merely some, not all, of the embodiments of the invention. It should be understood that the specific embodiments described are for illustrative purposes only and are not intended to limit the scope of the invention.

[0019] It should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the said feature, integral, step, operation, element, or component, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, or combinations thereof.

[0020] Please see Figure 1 The present invention provides a carbon accounting-guided, environmentally adaptive, wide-proportion lithium-sodium-lead-acid-solid hybrid energy storage control method, comprising the following steps: S1, Battery Management System Initialization, Real-time Acquisition of Environmental Parameters and Carbon Price Data, as well as Real-time Status Parameters of Lithium-Sodium Batteries, Lead-Acid Batteries, and Solid-State Batteries; S2 dynamically adjusts the power supply strategies of lithium-sodium batteries, lead-acid batteries, and solid-state batteries based on real-time carbon price data. When the carbon price is high, energy storage is prioritized, and when the carbon price is low, discharge is prioritized. S3, based on real-time environmental parameters combined with the real-time state parameters of lithium-sodium batteries, lead-acid batteries, and solid-state batteries, coordinates and regulates lithium-sodium batteries, solid-state batteries, and lead-acid batteries for energy storage or discharge.

[0021] S4. Repeat steps S1-S3 to achieve full-cycle adaptive optimization and carbon asset maximization.

[0022] This invention primarily establishes dynamic characteristics of three types of batteries: lithium-sodium batteries, lead-acid batteries, and solid-state batteries. The collaborative mechanism, combining real-time environmental parameters and carbon price data, enables intelligent management of the energy storage battery management system. Specifically, the battery management system initiates comprehensive data collection during the initialization phase, covering not only key environmental parameters such as ambient temperature and humidity, but also real-time tracking of price fluctuations in the carbon trading market, as well as status information such as voltage, current, and remaining capacity of lithium-sodium batteries, lead-acid batteries, and solid-state batteries.

[0023] In step S2, the battery management system flexibly adjusts the charging and discharging strategies of the three types of batteries based on real-time carbon price data. During periods of high carbon prices, the battery management system prioritizes energy storage operations, storing excess electrical energy in lithium-sodium batteries, lead-acid batteries, and solid-state batteries for sale or self-use during subsequent periods of high prices, thereby maximizing the value of carbon assets. During periods of low carbon prices, the system prioritizes discharging operations, using the stored electrical energy to meet load demands, reducing the cost of purchasing electricity from the grid, and avoiding resource waste caused by energy storage during periods of low prices.

[0024] In step S3, the battery management system further combines real-time environmental parameters with the real-time state parameters of the three types of batteries to perform refined coordinated control. For example, in high-temperature environments, the battery management system adjusts the lithium-sodium ion ratio of the lithium-sodium battery to optimize performance, while reducing the load on the lead-acid and solid-state batteries to prevent performance degradation or safety hazards caused by high temperatures. Conversely, in low-temperature environments, the battery management system may adopt the opposite strategy to ensure that the battery pack maintains its optimal operating state under different environmental conditions.

[0025] Furthermore, by monitoring the health status of lithium-sodium batteries, lead-acid batteries, and solid-state batteries in real time, the battery management system can issue timely warnings when faults or performance degradation are detected, and take corresponding maintenance measures, such as adjusting battery usage strategies and activating backup batteries, to ensure the continuous and stable operation of the energy storage battery management system. Simultaneously, the battery management system also incorporates a carbon accounting module, which can accurately calculate and display carbon emission reductions and carbon credit gains, providing users with an intuitive assessment of environmental benefits. In summary, this invention, by establishing a dynamic collaborative mechanism and combining real-time data with intelligent algorithms, achieves intelligent and efficient management of the energy storage battery management system. This not only improves energy utilization efficiency but also effectively promotes the appreciation of carbon assets and the enhancement of environmental benefits. It is particularly suitable for scenarios with high energy management requirements and a focus on carbon emission reduction, such as industrial parks, data centers, and commercial complexes. It can flexibly adjust energy storage and discharge strategies according to actual needs, ensuring optimal operating results under various environmental conditions.

[0026] In this embodiment, the lithium-sodium battery serves as the primary power source. The lithium-sodium battery adjusts the lithium-ion to sodium-ion ratio according to environmental parameters, while the lead-acid and solid-state batteries operate in a dormant or low-power state. When environmental parameters change, the battery management system adjusts the operating status of the lead-acid and solid-state batteries based on the degree of change. For example, in high- or low-temperature environments, the battery management system prioritizes the performance stability of the lithium-sodium battery by adjusting its ion ratio to adapt to environmental changes, while reducing reliance on lead-acid and solid-state batteries to lower the overall energy consumption and potential risks of the battery management system. When environmental parameters or inherent factors prevent the lithium-sodium battery from meeting normal power supply requirements, the battery management system switches to lead-acid and solid-state batteries for power supply to fully utilize their energy storage capacity and maximize energy utilization. Furthermore, if a fault or performance abnormality is detected in the lithium-sodium battery, its power supply is immediately cut off, and the system seamlessly switches to the solid-state battery to handle the entire power load, ensuring the continuity and stability of the energy storage battery management system.

[0027] In this embodiment, the lithium-sodium ion mixing ratio of the lithium-sodium battery is dynamically adjusted from 1:1 to 5:1 based on ambient temperature, including: When the ambient temperature is ≤-20℃, the lithium-sodium ratio is 4:1~5:1; When the ambient temperature is between -20℃ and 0℃, the lithium-sodium ratio is 2.5:1 to 3.5:1. When the ambient temperature is between 0℃ and 25℃, the lithium-sodium ratio is 1.8:1 to 2.5:1. When the ambient temperature is >25℃, the lithium-sodium ratio is 1:1~1.5:1.

[0028] By setting different temperature thresholds to adjust the lithium-ion to sodium-ion ratio in lithium-sodium batteries, the batteries can maintain high energy density and cycle stability under various temperature conditions, thereby improving the performance and reliability of the entire energy storage battery management system. For example, in extremely cold environments, increasing the lithium-ion ratio can enhance the battery's low-temperature performance, reduce internal resistance, and improve charge and discharge efficiency; while in high-temperature environments, appropriately increasing the sodium-ion ratio helps reduce the internal thermal effect of the battery and prevent safety issues caused by overheating. This dynamic adjustment strategy not only extends the battery's lifespan but also improves energy utilization efficiency and reduces operation and maintenance costs.

[0029] In this embodiment, when a fault is detected in the lithium-sodium battery, its power supply is immediately cut off, and the solid-state battery is controlled to bear the entire power load. This rapid response mechanism ensures that the energy storage battery management system can maintain stable operation even in the face of sudden faults, avoiding the paralysis of the entire battery management system due to a single battery failure. Simultaneously, the battery management system records information such as the time, type, and frequency of the fault, providing strong support for subsequent fault analysis and preventative maintenance. Furthermore, the battery management system sends fault alarm information to maintenance personnel through a user interface or remote communication to facilitate timely repair or replacement, reducing downtime and improving the availability and reliability of the battery management system. In practical applications, this fault handling strategy not only improves the robustness of the energy storage battery management system but also reduces maintenance costs and risks, bringing users higher economic and environmental benefits. For example, in critical application scenarios such as industrial parks or data centers, the stable operation of the energy storage battery management system is crucial for ensuring power supply and preventing data loss. This fault handling strategy ensures high availability and high reliability of the energy storage battery management system in these scenarios, thereby meeting users' high requirements for energy management and data security.

[0030] In this embodiment, the health status of the lead-acid battery and the interface impedance of the solid-state battery are monitored in real time. When the battery health value of the lead-acid battery and the interface impedance value of the solid-state battery reach the threshold, a maintenance or replacement reminder is issued. This can detect potential performance degradation or failure risks of the battery in advance, providing maintenance personnel with sufficient preparation time to perform maintenance or replacement before the battery performance deteriorates further, thereby avoiding battery management system downtime or performance degradation caused by battery failure. Specifically, the battery management system continuously collects the battery health value of the lead-acid battery to reflect multiple key indicators such as capacity decay and internal resistance changes. Once the battery health value falls below the preset threshold, the battery management system will immediately issue a maintenance reminder, prompting maintenance personnel to perform maintenance operations such as battery inspection, equalization charging, or battery replacement. At the same time, the battery management system also monitors the interface impedance value of the solid-state battery. Interface impedance is an important parameter reflecting the characteristics of the interface between the internal electrodes and electrolyte of the battery. Its changes are often closely related to the battery's charge and discharge efficiency and cycle life. When the interface impedance value of the solid-state battery exceeds the preset threshold, the battery management system will also issue a replacement reminder, recommending that maintenance personnel replace the solid-state battery in a timely manner to ensure the overall performance and stability of the energy storage battery management system.

[0031] In this embodiment, the carbon accounting collaborative control algorithm dynamically adjusts the energy storage strategy based on the carbon price: when the carbon price is higher than a first threshold, lithium-sodium batteries, lead-acid batteries, and solid-state batteries are prioritized for energy storage; when the carbon price is lower than the first threshold, lithium-sodium batteries, lead-acid batteries, and solid-state batteries are prioritized for discharge. Based on the dynamic adjustment strategy of the carbon price, the battery management system interfaces with the carbon trading platform API and dynamically adjusts the energy storage strategy according to the real-time carbon price. This allows the energy storage battery management system to fully utilize the price fluctuations in the carbon market and maximize the appreciation of carbon assets. During periods of high carbon prices, the battery management system stores excess electrical energy, which can not only be sold to obtain economic benefits during subsequent periods of high prices, but also be used to meet its own high energy consumption needs, thereby reducing dependence on the traditional power grid and lowering electricity purchase costs. During periods of low carbon prices, the battery management system prioritizes discharge, utilizing stored energy to meet load demands. This avoids resource waste caused by energy storage during low-price periods, improves energy efficiency, reduces grid load pressure, and promotes stable electricity market operation. Furthermore, by acquiring real-time carbon price data, it can accurately grasp market dynamics and adjust energy storage strategies promptly to adapt to the ever-changing carbon market environment, creating greater economic and environmental benefits for users. Further, it calculates and displays the battery management system's carbon emission reductions and carbon credit gains based on the real-time carbon price in real time. Through an intuitive interface, users can clearly understand the actual contribution of the energy storage battery management system to carbon emission reduction and its potential carbon credit gains. This not only enhances users' environmental awareness but also motivates them to participate more actively in carbon reduction actions. In addition, it can predict future carbon price trends based on historical data and market trends, providing users with more accurate energy storage and discharge recommendations accordingly.

[0032] In this embodiment, the solid-state battery uses a sulfide electrolyte. The positive electrode is coated with a nickel-rich material, and the negative electrode is made of a silicon-carbon composite material. The sulfide electrolyte has high ionic conductivity, enabling efficient ion transport at lower temperatures, thereby improving the battery's charge and discharge efficiency. The sulfide electrolyte also exhibits good chemical stability, making it less prone to reacting with electrode materials, thus reducing the risk of internal short circuits and thermal runaway. The nickel-rich coated positive electrode not only increases the battery's capacity but also enhances its structural stability, reducing capacity decay during high-voltage charge and discharge. The silicon-carbon composite material as the negative electrode effectively alleviates the volume expansion problem of silicon materials during charge and discharge, improving the cycle life of the negative electrode. Furthermore, the nickel-rich coated positive electrode and the silicon-carbon composite negative electrode further improve the battery's high-temperature resistance, allowing the solid-state battery to maintain stable performance output even at high temperatures. In practical applications, these advantages of solid-state batteries make them an important component of energy storage battery management systems. When lithium-sodium batteries or lead-acid batteries fail to function properly due to environmental factors or their own malfunctions, solid-state batteries can quickly take over the power supply load, ensuring the continuity and stability of the energy storage battery management system. At the same time, their high energy density and long cycle life reduce the operation and maintenance costs of the energy storage battery management system, improving overall economic efficiency.

[0033] This invention also provides a carbon accounting-oriented, environmentally adaptive, wide-proportion lithium-sodium-lead-acid-solid hybrid energy storage system, comprising: The data acquisition module is used to collect environmental parameters, carbon price data, and real-time status parameters of lithium-sodium batteries, lead-acid batteries, and solid-state batteries in real time. The strategy adjustment module is connected to the data acquisition module. Based on real-time carbon price data, it dynamically adjusts the power supply strategy of lithium-sodium batteries, lead-acid batteries, and solid batteries. When the carbon price is high, energy storage is given priority, and when the carbon price is low, discharge is given priority. The coordinated control module, connected to the data acquisition module and the strategy adjustment module, coordinates the energy storage or discharge of lithium-sodium batteries, lead-acid batteries, and solid-state batteries based on real-time environmental parameters and real-time state parameters of lithium-sodium batteries, lead-acid batteries, and solid-state batteries. The cyclic execution module, connected to the data acquisition module, strategy adjustment module, and collaborative control module, is used to repeatedly execute the steps of data acquisition, strategy adjustment, and collaborative control in order to achieve full-cycle adaptive optimization and carbon asset maximization. The fault handling module is used to immediately cut off the power supply to the lithium-sodium battery when a fault is detected, and to control the solid battery to bear the entire power supply load. The monitoring and reminder module is used to monitor the health status of lead-acid batteries and the interface impedance of solid batteries in real time. When the battery health value of lead-acid batteries and the interface impedance value of solid batteries reach the threshold, a maintenance or replacement reminder is issued. The carbon price docking module is used to connect with the carbon trading platform API to obtain real-time carbon price data for use by the strategy adjustment module. The battery configuration module is used to configure the solid-state battery to use sulfide as the electrolyte, the positive electrode of the solid-state battery to be coated with nickel-rich material, and the negative electrode to be made of silicon-carbon composite material.

[0034] The data acquisition module, serving as the system's information source, continuously collects environmental parameters, carbon price data, and real-time status parameters of the three types of batteries, providing comprehensive and accurate data support for subsequent decision-making. Based on the real-time carbon price data transmitted from the data acquisition module, the strategy adjustment module flexibly and precisely adjusts the power supply strategies of the three types of batteries dynamically. During periods of high carbon prices, it prioritizes energy storage operations, effectively storing excess electrical energy for sale during subsequent periods of high prices to generate economic benefits or meet its own high energy consumption needs, reducing dependence on the traditional power grid and lowering electricity purchase costs. During periods of low carbon prices, it prioritizes discharging operations, fully utilizing stored electrical energy to meet load demands, avoiding resource waste caused by energy storage during low-price periods, improving energy efficiency, alleviating grid load pressure, and promoting stable operation of the electricity market.

[0035] The coordinated control module combines real-time environmental parameters acquired by the data acquisition module with the real-time status parameters of the three types of batteries to perform refined coordinated control. For example, in high-temperature environments, it rationally adjusts the lithium-sodium ion ratio of the lithium-sodium battery to optimize its performance, while reducing the load on the lead-acid and solid-state batteries to prevent performance degradation or safety hazards caused by high temperatures. In low-temperature environments, the opposite strategy is adopted to ensure that the battery pack maintains its optimal operating state under different environmental conditions. The cyclic execution module is responsible for repeatedly executing the steps of data acquisition, strategy adjustment, and coordinated control to achieve full-cycle adaptive optimization, continuously optimizing and adjusting the energy storage system to maximize carbon assets.

[0036] The fault handling module constantly monitors the operating status of the lithium-sodium battery. Upon detecting a fault in the lithium-sodium battery, it immediately cuts off its power supply and quickly controls the solid-state battery to assume the entire power load. This ensures the energy storage battery management system maintains stable operation even in the face of sudden faults, preventing the entire system from collapsing due to a single battery failure. Simultaneously, the module records the time, type, and frequency of fault occurrences, providing strong support for subsequent fault analysis and preventative maintenance. Furthermore, it sends fault alarm information to maintenance personnel via the user interface or remote communication, enabling timely repair or replacement, reducing downtime, and improving the availability and reliability of the battery management system.

[0037] The monitoring and alert module monitors the health status of lead-acid batteries and the interface impedance of solid-state batteries in real time. When the battery health value and solid-state battery interface impedance value reach preset thresholds, it promptly issues a maintenance or replacement alert. This allows for early detection of potential performance degradation or failure risks, providing maintenance personnel with ample preparation time to perform maintenance or replacement before further deterioration in battery performance, thereby avoiding battery management system downtime or performance degradation due to battery failure. The carbon price docking module is responsible for interfacing with the carbon trading platform API to obtain real-time carbon price data. This provides the strategy adjustment module with accurate market information, enabling it to dynamically adjust energy storage strategies based on real-time carbon prices, fully leveraging carbon market price fluctuations to maximize the appreciation of carbon assets. The battery configuration module features a carefully designed solid-state battery using sulfide as the electrolyte. This electrolyte boasts high ionic conductivity, enabling efficient ion transport at lower temperatures and improving charge / discharge efficiency. It also exhibits good chemical stability, reducing the risk of internal short circuits and thermal runaway. The positive electrode of the solid-state battery is coated with nickel-rich material, increasing battery capacity, enhancing structural stability, and reducing capacity decay during high-voltage charge / discharge processes. The negative electrode uses silicon-carbon composite material, effectively mitigating the volume expansion problem of silicon materials during charge / discharge, improving the cycle life of the negative electrode, and further enhancing the battery's high-temperature resistance. This allows the solid-state battery to maintain stable performance output even in high-temperature environments. When lithium-sodium or lead-acid batteries fail due to environmental factors or their own malfunctions, the solid-state battery can quickly take over the power supply load, ensuring the continuity and stability of the energy storage battery management system. Simultaneously, its high energy density and long cycle life reduce the operation and maintenance costs of the energy storage battery management system, improving overall economic efficiency.

[0038] Lithium-sodium ratio optimization verification experiment Experimental conditions: Ambient temperature: -20℃, 0℃, 25℃, 40℃; Lithium-sodium ratio: 5:5, 6:4, 7:3, 8:2, 9:1; Test items: energy density, cost, low-temperature performance, cycle life.

[0039] Experimental results: Lithium-sodium ratio Energy density (Wh / kg) relative cost -20℃ discharge efficiency Cycle life (times) 5:5 145 100% 88% 3500 6:4 158 108% 85% 3800 7:3 172 115% 82% 4200 8:2 168 125% 78% 4000 9:1 165 135% 75% 3900 in conclusion: The 7:3 ratio performs best in terms of energy density and cycle life, although the cost is slightly higher, it offers the best overall performance. Ratios in the range of 6:4 to 8:2 all have good overall performance and are suitable for dynamic adjustment.

[0040] Solid-state battery ion conductivity test: Temperature (°C) Traditional electrolytes LiI-LiBr doping Increase -20 2.1×10^-4 5.8×10^-4 176% 0 8.5×10^-4 1.9×10^-3 124% 25 2.3×10^-3 4.1×10^-3 78% Discharge efficiency test: Temperature (°C) Traditional electrolytes LiI-LiBr doping Increase -20 78% 92% 18% 0 85% 96% 13% 25 92% 98% 7% Conclusion: By comparing the ionic conductivity and discharge efficiency of solid-state batteries using conventional electrolytes and LiI-LiBr-doped electrolytes at different temperatures, it is evident that the LiI-LiBr-doped electrolyte exhibits significant improvements in both ionic conductivity and discharge efficiency. Regarding ionic conductivity, the LiI-LiBr-doped electrolyte demonstrates higher conductivity than the conventional electrolyte at low temperatures (-20℃), room temperatures (0℃), and high temperatures (25℃), with increases of 176%, 124%, and 78%, respectively. In terms of discharge efficiency, the LiI-LiBr-doped electrolyte also shows advantages, particularly at -20℃, where the discharge efficiency increases from 78% to 92%, a significant improvement of 18%. Significant improvements are also observed at room temperature and high temperatures. These test results validate the effectiveness of the LiI-LiBr-doped electrolyte in improving the performance of solid-state batteries, especially at low temperatures, where its advantages are more pronounced, contributing to improved stability and reliability of solid-state batteries under various environmental conditions.

[0041] Example 1: Carbon Accounting Version for Residential Energy Storage Core battery unit: Lithium-sodium hybrid module: 15 lithium iron phosphate batteries (3.2V / 10Ah) + 10 sodium-ion batteries (3.2V / 10Ah), with a total series voltage of 80V / 10Ah (ratio 1.5:1). Solid-state battery cell: 2 series and 1 parallel sulfide solid-state modules (3.8V / 20Ah×2), total voltage 7.6V / 20Ah; Lead-acid unit: 1 unit, 12V 20Ah (size 155mm×85mm×100mm); BMS control flow: During periods of high carbon prices (>0.5 yuan / kWh): Battery management systems prioritize energy storage, lithium-sodium modules are the main power source, solid-state batteries are preheated, and lead-acid batteries are in standby mode; During periods of low carbon prices (<0.2 yuan / kWh): Battery management systems prioritize discharge, solid-state batteries handle high power demands, lithium and sodium batteries are the main suppliers, and lead-acid batteries provide a backup. Carbon credit display: The app displays carbon emission reductions in real time; Application results: The household battery management system reduces carbon emissions by 600 kg per year and generates 180 yuan in carbon credits, which is 18% higher than that of traditional energy storage battery management systems.

[0042] Example 2: Carbon Accounting Version for Outdoor Emergency Power Supplies Core battery unit: Lithium-sodium hybrid module: 48 lithium iron phosphate batteries (3.2V / 50Ah) + 48 sodium-ion batteries (3.2V / 50Ah), with a total series voltage of 307.2V / 50Ah (ratio 1:1); Solid-state battery cell: 4 series and 1 parallel sulfide solid-state modules (3.8V / 20Ah×4), total voltage 15.2V / 20Ah; Lead-acid unit: 2 x 12V 40Ah units in series (24V / 40Ah, dimensions 225mm×115mm×145mm). BMS control flow: In harsh outdoor environments (-30℃): the lithium-sodium ratio is automatically adjusted to 5:1, the solid battery starts preheating, and the discharge efficiency reaches 86%; Carbon price fluctuations: The energy storage strategy is dynamically adjusted according to the real-time carbon price, storing energy when the carbon price is high and discharging energy when the carbon price is low; Carbon credit reward: 20 carbon credits are automatically earned for each lead-acid battery replacement; Application effects: Stable power supply at -30℃, zero risk of thermal runaway, 24-month lead-acid replacement cycle, 40% reduction in annual maintenance costs, and 120 yuan in carbon credit benefits.

[0043] Example 3: Photovoltaic Collaborative Carbon Accounting Battery Management System Core battery unit: Lithium-sodium hybrid module: 50 ternary lithium batteries (3.7V / 100Ah) + 10 sodium-ion batteries (3.2V / 100Ah), with a total series and parallel voltage of 380V / 100Ah (ratio 5:1). Solid-state battery cell: 8 series and 1 parallel sulfide solid-state modules (3.8V / 20Ah×8), total voltage 30.4V / 20Ah; Lead-acid battery: 3 x 12V 100Ah units in series (36V / 100Ah). BMS control flow: Photovoltaic synergy: During the daytime when photovoltaic power generation occurs, the battery management system prioritizes energy storage (during periods of high carbon price) and discharges energy at night (during periods of low carbon price). Carbon accounting: The battery management system automatically calculates the carbon emission reduction of photovoltaic power generation and combines it with the carbon emission reduction of the energy storage battery management system; Carbon credits: The photovoltaic + energy storage battery management system reduces carbon emissions by an average of 1200 kg per year, and generates carbon credits of 360 yuan. Application results: The photovoltaic + energy storage battery management system reduces carbon emissions by 1200kg per year and generates carbon credits of 360 yuan, which is 30% higher than that of a pure photovoltaic battery management system.

[0044] The advantages of this invention are: 1. Significant improvement in safety performance: Solid-state batteries have no risk of leakage or thermal runaway, and the thermal runaway temperature of the battery management system is >300℃, which is more than twice the safety threshold of traditional hybrid solutions, making them suitable for sensitive scenarios; 2. Enhanced environmental adaptability: After low-temperature optimization, the solid-state battery achieves a discharge efficiency of ≥90% at -20℃, and with adjustments to the lithium-sodium ratio, the power supply efficiency reaches ≥85% across the entire temperature range (-40℃~65℃). 3. Power and lifespan optimization: Solid-state batteries can handle high power loads, which extends the cycle life of lithium-sodium batteries by 30% and lead-acid batteries by 20%, and the overall cycle life of the battery management system is ≥6000 cycles; 4. Maximize the value of carbon assets: The battery management system is deeply integrated with the carbon trading platform, allowing users to earn carbon credits (an average annual increase of 15% to 20% in residential scenarios). 5. Cost and maintenance balance: Lead-acid batteries reduce initial costs by 30% to 40%, solid-state batteries reduce costs by 50% compared to pure solid-state solutions, tool-free maintenance and replacement, and reduce total lifecycle costs by 45%; 6. Excellent compatibility across multiple scenarios: Adaptable to residential, base station, UPS, security, and outdoor / special scenarios (such as military, marine, and plateau environments), compatible with existing installation interfaces and communication protocols, resulting in low replacement costs.

[0045] The above-disclosed embodiments are merely a few specific examples of the present invention, but the present invention is not limited thereto. Any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A carbon accounting-guided, environmentally adaptive, wide-proportion lithium-sodium-lead-acid-solid hybrid energy storage control method, characterized in that, Includes the following steps: S1, Battery Management System Initialization, Real-time Acquisition of Environmental Parameters and Carbon Price Data, as well as Real-time Status Parameters of Lithium-Sodium Batteries, Lead-Acid Batteries, and Solid-State Batteries; S2, based on the real-time carbon price data, dynamically adjust the power supply strategy of the lithium-sodium battery, the lead-acid battery, and the solid battery, prioritizing energy storage when the carbon price is high and prioritizing discharge when the carbon price is low; S3, based on the real-time environmental parameters and the real-time state parameters of the lithium-sodium battery, the lead-acid battery, and the solid-state battery, the lithium-sodium battery, the solid-state battery, and the lead-acid battery are coordinated to store or discharge energy. S4. Repeat steps S1-S3 to achieve full-cycle adaptive optimization and carbon asset maximization.

2. The carbon accounting-guided, environmentally adaptive, wide-proportion lithium-sodium-lead-acid-solid hybrid energy storage control method according to claim 1, characterized in that, In S3, the lithium-sodium battery serves as the main power source, and the lithium-sodium battery adjusts the ratio of lithium ions to sodium ions according to environmental parameters. The lead-acid battery and the solid-state battery are in a dormant or low-power operation state. When environmental parameters change, the battery management system adjusts the operating state of the lead-acid battery and the solid-state battery according to the degree of change.

3. The carbon accounting-guided, environmentally adaptive, wide-proportion lithium-sodium-lead-acid-solid hybrid energy storage control method according to claim 2, characterized in that, The lithium-sodium ion mixing ratio of the lithium-sodium battery is dynamically adjusted based on ambient temperature, ranging from 1:1 to 5:1, including: When the ambient temperature is ≤-20℃, the lithium-sodium ratio is 4:1~5:1; When the ambient temperature is between -20℃ and 0℃, the lithium-sodium ratio is 2.5:1 to 3.5:

1. When the ambient temperature is between 0℃ and 25℃, the lithium-sodium ratio is 1.8:1 to 2.5:

1. When the ambient temperature is >25℃, the lithium-sodium ratio is 1:1~1.5:

1.

4. The carbon accounting-guided, environmentally adaptive, wide-proportion lithium-sodium-lead-acid-solid hybrid energy storage control method according to claim 2, characterized in that, When a fault is detected in the lithium-sodium battery, the power supply to the lithium-sodium battery is immediately cut off, and the solid-state battery is controlled to bear the entire power supply load.

5. The carbon accounting-guided, environmentally adaptive, wide-proportion lithium-sodium-lead-acid-solid hybrid energy storage control method according to claim 2, characterized in that, The system monitors the health status of the lead-acid battery and the interface impedance of the solid-state battery in real time. When the battery health value of the lead-acid battery and the interface impedance value of the solid-state battery reach the threshold, a maintenance or replacement reminder is issued.

6. The carbon accounting-guided, environmentally adaptive, wide-proportion lithium-sodium-lead-acid-solid hybrid energy storage control method according to claim 2, characterized in that, The carbon accounting collaborative control algorithm dynamically adjusts the energy storage strategy based on the carbon price: when the carbon price is higher than the first threshold, the lithium-sodium battery, the lead-acid battery, and the solid-state battery prioritize energy storage; when the carbon price is lower than the first threshold, the lithium-sodium battery, the lead-acid battery, and the solid-state battery prioritize discharge.

7. The carbon accounting-guided, environmentally adaptive, wide-proportion lithium-sodium-lead-acid-solid hybrid energy storage control method according to claim 1, characterized in that, The solid-state battery uses sulfide as the electrolyte, the positive electrode of the solid-state battery is coated with nickel-rich material, and the negative electrode is made of silicon-carbon composite material.

8. The carbon accounting-guided, environmentally adaptive, wide-proportion lithium-sodium-lead-acid-solid hybrid energy storage control method according to claim 1, characterized in that, The battery management system interfaces with the carbon trading platform API and dynamically adjusts the energy storage strategy based on real-time carbon prices.

9. The carbon accounting-guided, environmentally adaptive, wide-proportion lithium-sodium-lead-acid-solid hybrid energy storage control method according to claim 8, characterized in that, The system calculates and displays in real time the carbon emission reductions of the battery management system and the carbon credit gains based on the real-time carbon price.

10. A carbon accounting-oriented, environmentally adaptive, wide-proportion lithium-sodium-lead-acid-solid hybrid energy storage system, characterized in that, include: The data acquisition module is used to collect environmental parameters, carbon price data, and real-time status parameters of lithium-sodium batteries, lead-acid batteries, and solid-state batteries in real time. The strategy adjustment module is connected to the data acquisition module. Based on real-time carbon price data, it dynamically adjusts the power supply strategy of lithium-sodium batteries, lead-acid batteries, and solid batteries. When the carbon price is high, energy storage is given priority, and when the carbon price is low, discharge is given priority. The coordinated control module is connected to the data acquisition module and the strategy adjustment module. Based on real-time environmental parameters and the real-time state parameters of the lithium-sodium battery, lead-acid battery, and solid-state battery, it coordinates the lithium-sodium battery, solid-state battery, and lead-acid battery to store or discharge energy. The cyclic execution module, connected to the data acquisition module, the strategy adjustment module, and the collaborative control module, is used to repeatedly execute the steps of data acquisition, strategy adjustment, and collaborative control to achieve full-cycle adaptive optimization and carbon asset maximization. The fault handling module is used to immediately cut off the power supply to the lithium-sodium battery when a fault is detected, and to control the solid battery to bear the entire power supply load. The monitoring and reminder module is used to monitor the health status of lead-acid batteries and the interface impedance of solid batteries in real time. When the battery health value of lead-acid batteries and the interface impedance value of solid batteries reach the threshold, a maintenance or replacement reminder is issued. The carbon price docking module is used to connect with the carbon trading platform API to obtain real-time carbon price data for use by the strategy adjustment module. The battery configuration module is used to configure the solid-state battery to use sulfide as the electrolyte, the positive electrode of the solid-state battery to be coated with nickel-rich material, and the negative electrode to be made of silicon-carbon composite material.

Images