A smart monitoring system for lithium-to-dry battery power

Abstract

This invention discloses an intelligent monitoring system for lithium-to-dry-cell battery power, comprising a lithium-to-dry-cell battery terminal, a Bluetooth adapter terminal, and an intelligent monitoring terminal. The lithium-to-dry-cell battery terminal includes a lithium battery cell, a charge / discharge management module, an MCU control chip, and a Type-C female connector module. The Bluetooth adapter terminal includes an LDO module, a Bluetooth control chip, and a Type-C male connector module. The charge / discharge management module is used to detect the temperature of the lithium battery cell and control its charge / discharge. The MCU control chip is used to detect the voltage, state of charge (SOC), and health status of the lithium battery cell and transmit the detected data to the Bluetooth adapter terminal. The Bluetooth control chip receives the detected data through the Type-C male connector module and broadcasts it to the intelligent monitoring terminal. The intelligent monitoring terminal displays the detected data via an app. When the health status value of the lithium battery cell exceeds a preset health status threshold, the app issues an alarm message.

Description

Technical Field

[0001] This invention relates to the field of lithium battery technology, and more specifically to an intelligent monitoring system for the charge of a lithium-to-dry battery. Background Technology

[0002] Traditional dry-cell batteries suffer from insufficient battery life due to their low energy density, steep discharge curves (typically causing a rapid voltage drop from 1.5V to 0.9V), leading to device performance degradation and making it impossible to estimate remaining capacity based on voltage. Their single-use nature results in resource waste (over 15 billion batteries are discarded globally annually), zero cycle life, and high internal resistance (100-300mΩ) causing voltage collapse in high-current scenarios (such as smart door lock motor startup). They also incur high long-term hidden costs, and their lifecycle status is unmonitorable, leading to a high risk of sudden power outages and reactive maintenance. These shortcomings necessitate a systemic replacement in intelligent, high-reliability, and sustainable development scenarios.

[0003] Lithium-ion batteries are a type of battery that uses lithium metal or lithium alloys as positive / negative electrode materials and a non-aqueous electrolyte solution. With the development of lithium-ion battery science and technology and its applications, lithium-ion batteries have become the mainstream battery type due to their high energy storage capacity, long lifespan, high power handling capability, light weight, and strong adaptability to high and low temperatures. They are used in various industries, such as smart door locks, medical monitoring equipment, industrial wireless sensor networks, IoT nodes, gaming peripherals, professional tools, outdoor navigation, and emergency equipment.

[0004] With such a wide range of applications, including high-reliability scenarios, large-scale distributed systems, performance-sensitive consumer electronics, and extreme environment equipment, power consumption and lifecycle monitoring are particularly important. Summary of the Invention

[0005] Based on the above situation, the main objective of this invention is to provide an intelligent monitoring system for lithium-to-dry battery power, which realizes the digital upgrade of energy for traditional dry battery equipment, makes the entire product smaller, more convenient for users, and makes intelligent monitoring more convenient.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A lithium-to-dry-cell battery power intelligent monitoring system includes a lithium-to-dry-cell battery terminal, a Bluetooth adapter terminal, and an intelligent monitoring terminal. The lithium-to-dry-cell battery terminal includes a lithium battery cell, a charge / discharge management module, an MCU control chip, and a Type-C female connector module. The Bluetooth adapter terminal includes an LDO module, a Bluetooth control chip, and a Type-C male connector module. The lithium-to-dry-cell battery terminal and the Bluetooth adapter terminal can be connected via the Type-C female connector module and the Type-C male connector module, and the Bluetooth adapter terminal and the intelligent monitoring terminal are wirelessly connected via Bluetooth. The charge / discharge management module is used to detect the temperature of the lithium battery cell and control the charge / discharge of the lithium battery cell. The charge / discharge control includes charging the lithium battery cell through the Type-C female connector module and performing DC-DC step-down control on the lithium battery cell to reduce the output voltage of the lithium battery cell to the standard voltage of a dry-cell battery. The MCU control chip is used to detect the lithium battery cell... The system receives the voltage, state of charge (SOC), and health status of the lithium battery cell, and transmits these values, along with its temperature and charge / discharge status information, to the Bluetooth adapter via the Type-C female connector module. The LDO module reduces the output voltage of the Type-C male connector module to the operating voltage of the Bluetooth control chip. The Bluetooth control chip receives these values ​​via the Type-C male connector module and broadcasts them to the smart monitoring terminal. The smart monitoring terminal is equipped with a lithium-to-dry-cell battery power monitoring app. The app displays the lithium battery cell's voltage, SOC, health status, temperature, and charge / discharge status information. When the lithium battery cell's health status value exceeds a preset threshold, the app issues an alarm.

[0008] Preferably, the Type-C female connector module and the Type-C male connector module are 16-pin Type-C interfaces, and the charge / discharge management module charges the lithium battery cell through the power pin of the Type-C female connector module.

[0009] Preferably, when the charge / discharge management module performs DC-DC step-down control on the lithium battery cell, the standard voltage of the dry cell is 1.5±0.05V.

[0010] Preferably, the MCU control chip uses a combination of the ampere-hour integration method and the open-circuit voltage method to calculate the state of charge value of the lithium battery cell.

[0011] Preferably, the method of calculating the state of charge (SOC) of the lithium battery cell using a combination of the ampere-hour integration method and the open-circuit voltage method includes: calculating the initial SOC using the open-circuit voltage method; and calculating the SOC of the lithium battery cell using the following formula:

[0012] ;

[0013] ;

[0014] Where ΔQ is the cumulative change in charge, η is the coulombic efficiency, I is the lithium battery cell current (positive during charging and negative during discharging), SOC(0) is the initial state of charge, and C... N , where i is the nominal capacity of the lithium battery cell, i is the sampling sequence number, and k is the total number of samples.

[0015] Preferably, the MCU control chip uses the internal resistance growth method to detect the health status value of the lithium battery cell.

[0016] Preferably, the health status value of the lithium battery cell is calculated using the following formula:

[0017] ;

[0018] Among them, R current R is the current internal resistance of the lithium battery cell. initial R is the initial internal resistance of the lithium battery cell at the time of manufacture. EOL This is the internal resistance threshold corresponding to the end of the lithium battery cell's lifespan.

[0019] Preferably, the MCU control chip transmits the voltage, state of charge, health status, temperature, and charge / discharge status information of the lithium battery cell to the Bluetooth adapter via the CC pin of the Type-C female interface module.

[0020] Preferably, the Bluetooth adapter also stores the received voltage, state of charge, health status, temperature, and charge / discharge status information of the lithium battery cell, and the smart monitoring terminal can read the data stored by the Bluetooth adapter.

[0021] Preferably, the Bluetooth adapter further includes a button and indicator lights. When the button is clicked, the Bluetooth control chip controls the indicator lights to display different colors or control different numbers of indicator lights to illuminate based on the state of charge value, so as to indicate the power information of the lithium-to-dry battery. When the button is double-clicked, the Bluetooth control chip broadcasts the voltage, state of charge value, health status value, temperature, and charge / discharge status information of the lithium battery cell. When the button is pressed and held, the Bluetooth control chip controls the Bluetooth adapter to reset and pair.

[0022] Preferably, the intelligent monitoring terminal is wirelessly connected to multiple Bluetooth adapters, each Bluetooth adapter is connected to one of the lithium-to-dry-cell batteries, and the intelligent monitoring terminal can simultaneously receive information from each of the lithium-to-dry-cell batteries broadcast by the multiple Bluetooth adapters.

[0023] This invention addresses a series of technical problems existing in the use of traditional dry-cell batteries. By integrating lithium-to-dry-cell batteries, SOC (State of Charge), SOH (State of Health) algorithms, and Bluetooth transmission, it achieves intelligent charging and discharging control and intelligent monitoring of various operating data of the lithium battery cells at the battery end. The monitoring data is broadcast through a miniaturized Bluetooth adapter, i.e., a Bluetooth dongle. Users can view battery data in real time at the intelligent monitoring end, realizing a digital energy upgrade of traditional dry-cell battery devices. The entire product is more compact, easier for users to use, and offers more convenient intelligent monitoring.

[0024] Other beneficial effects of the present invention will be explained in detail through the introduction of specific technical features and technical solutions in specific embodiments. Those skilled in the art should be able to understand the beneficial technical effects brought about by these technical features and technical solutions through the introduction of these technical features and technical solutions. Attached Figure Description

[0025] The preferred embodiment of the lithium-to-dry battery power intelligent monitoring system according to the present invention will be described below with reference to the accompanying drawings. In the drawings:

[0026] Figure 1 This is a block diagram of a lithium-to-dry battery power intelligent monitoring system according to a preferred embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of a lithium-to-dry battery terminal circuit according to a preferred embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of a Bluetooth adapter circuit according to a preferred embodiment of the present invention. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In the description of this invention, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0031] In the description of this invention, unless otherwise explicitly defined, terms such as "setup" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0032] In the description of this invention, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] Figure 1The block diagram of a lithium-to-dry battery power intelligent monitoring system according to a preferred embodiment of the present invention includes a lithium-to-dry battery terminal 100, a Bluetooth adapter terminal (Bluetooth dongle) 200, and an intelligent monitoring terminal 300. The lithium-to-dry battery terminal 100 includes a lithium battery cell 101, a charge / discharge management module 102, an MCU control chip 103, and a Type-C female interface module 104. The Bluetooth adapter terminal 200 includes an LDO module (low dropout linear regulator) 201, a Bluetooth control chip 202, and a Type-C male interface module 203. The lithium-to-dry battery terminal 100 and the Bluetooth adapter terminal 200 can communicate via a Type-C female connector. The connector module 104 and the Type-C male connector module 203 are connected, and the Bluetooth adapter 200 is wirelessly connected to the smart monitoring terminal 300 via Bluetooth. The charge / discharge management module 102 is used to detect the temperature of the lithium battery cell 101 and control the charge / discharge of the lithium battery cell 101. The charge / discharge control includes charging the lithium battery cell 101 through the Type-C female connector module 104 and performing DC-DC step-down control on the lithium battery cell 101 to reduce the output voltage of the lithium battery cell 101 to the standard voltage of a dry cell battery. The MCU control chip 103 is used to detect the voltage and state of charge (SOC) of the lithium battery cell 101. The lithium battery cell 101 receives the voltage, state of charge (SOH), and state of health (SOH) values ​​of its battery cell 101. The SOH values ​​are then transmitted to the Bluetooth adapter 200 via the Type-C female connector module 104. The LDO module 201 reduces the output voltage of the Type-C male connector module 203 to the operating voltage of the Bluetooth controller chip 202. The Bluetooth controller chip 202 receives these values ​​via the Type-C male connector module 203 and broadcasts them to the smart monitoring terminal 300. The smart monitoring terminal 300 is equipped with a lithium-to-dry battery power monitoring app. The app displays the voltage, SOH, temperature, and charge / discharge status information of the lithium battery cell 101. When the SOH value of the lithium battery cell 101 exceeds a preset threshold, the app issues an alarm.

[0034] This invention addresses a series of technical problems existing in the use of traditional dry-cell batteries. By integrating algorithms for lithium-to-dry-cell batteries (1.5V), SOC (State of Charge), and SOH (State of Health), along with Bluetooth transmission, it achieves intelligent charging and discharging control and intelligent monitoring of various operating data of the lithium battery cells at the battery end. The monitoring data is broadcast through a miniaturized Bluetooth adapter, i.e., a Bluetooth dongle. Users can view battery data in real time at the intelligent monitoring end, realizing a digital energy upgrade of traditional dry-cell battery devices. The entire product is more compact, easier for users to operate, and offers more convenient intelligent monitoring.

[0035] The intelligent monitoring terminal in this invention can be a smart device such as a smartphone, tablet, or computer, or a dedicated battery testing device. The battery terminal achieves hardware-level constant voltage and software-level SOC and SOH monitoring of the lithium battery cell through a charge / discharge management module and an MCU control chip. Simultaneously, Type-C charging allows for the recycling of the lithium battery, avoiding single-use waste. The Bluetooth dongle terminal and intelligent monitoring terminal utilize an LDO + Bluetooth SoC + APP combination to construct an ultra-low power interactive system. The battery terminal completes energy conversion and metering, while the Bluetooth terminal enables data transmission and human-computer interaction, forming a closed loop of "sensing-computing-interaction," redefining the dry cell battery energy infrastructure. The charge / discharge management module in this invention can be a chip with charge / discharge management functions.

[0036] In a preferred embodiment, both the Type-C female connector module and the Type-C male connector module can use 16-pin Type-C interfaces. The charge / discharge management module 102 can charge the lithium battery cell 101 through the power pins of the Type-C female connector module. In a specific embodiment, the charging voltage can reach 5V and the current can reach 1A.

[0037] In a preferred embodiment, when the charge / discharge management module 102 performs DC-DC step-down control on the lithium battery cell 101, the standard voltage of the dry cell can be 1.5 ± 0.05V. That is, a standard voltage for dry cells with an error accuracy of 0.5V can be achieved. This enables high-capacity, cyclically constant-voltage power supply to the battery.

[0038] State of Charge (SOC) refers to the ratio of the remaining charge in a battery to its rated total capacity when fully charged, usually expressed as a percentage (%). SOC is the most critical parameter for charge and discharge control, charge balancing, and preventing overcharging and over-discharging.

[0039] In a preferred embodiment, the MCU control chip 103 can calculate the state of charge (SOC) of the lithium battery cell using a combination of the ampere-hour integration method and the open-circuit voltage method (OCV method). In a specific embodiment, the ampere-hour integration method can be used as the primary method, with periodic calibration using the OCV method. The open-circuit voltage and SOC of the lithium battery cell have a fixed relationship, and the OCV-SOC curve can be obtained experimentally.

[0040] In a preferred embodiment, the ampere-hour integration method requires an accurate initial state of charge (SOC) for calculation; therefore, the open-circuit voltage method can be used to calculate the initial SOC. The ampere-hour integration method can employ discretized accumulation with a fixed sampling period (e.g., Δt = 1 second). With a sufficiently small sampling period Δt, the formula for the ampere-hour integration method can be:

[0041] ;

[0042] ;

[0043] Where ΔQ is the cumulative change in charge, η is the coulombic efficiency, also known as the charge / discharge loss coefficient, I is the lithium battery cell current value, which is positive during charging and negative during discharging, SOC(0) is the initial state of charge value (initial SOC value), and C N , where i is the nominal capacity of the lithium battery cell, i is the sampling sequence number, and k is the total number of samples.

[0044] In actual testing, after the lithium battery cell has been left to stand for a long time and the voltage has stabilized, an accurate SOC value can be obtained by using the OCV-SOC lookup table method, and this value can be used to calibrate the results of the coulomb-hour integration method.

[0045] In other implementations, the SOC value of lithium-ion cells can be detected using methods such as equivalent circuit model + Kalman filtering, neural network / machine learning methods, etc.

[0046] State of Health (SOH) is used to measure the performance comparison between a battery's current state and that of a new battery. It describes the irreversible performance degradation that occurs in a battery over time and with use. SOH is usually expressed as a percentage, with 100% representing a brand new battery and 0% typically indicating that the battery has degraded to the point of needing replacement. SOH primarily measures battery aging from two dimensions:

[0047] (1) Capacity decay: refers to the degree of decrease in the maximum amount of electricity that a battery can currently store relative to its initial rated capacity.

[0048] (2) Increased internal resistance: refers to the increase in the internal resistance of the battery as it is used. Increased internal resistance means that more electrical energy will be converted into heat energy during charging and discharging, causing the battery to heat up and the output voltage to decrease. Under high load, the voltage drop is more obvious, which may lead to automatic shutdown of the device or a decrease in performance.

[0049] In a preferred embodiment, the MCU control chip 103 can detect the state of health (SOH) value of the lithium battery cell using an internal resistance growth method. In a specific embodiment, the SOH value of the lithium battery cell can be calculated using the following formula:

[0050] ;

[0051] Among them, R current R is the current internal resistance of the lithium battery cell. initial R is the initial internal resistance of the lithium battery cell at the time of manufacture. EOL This represents the internal resistance threshold at the end of the lithium-ion battery cell's lifespan. Specifically, R can be calculated based on the voltage surge (ΔV) and current surge (ΔI) during the charging and discharging of the lithium-ion battery cell. current =ΔV / ΔI.

[0052] By accurately monitoring both State of Charge (SOC) and State of Harshness (SOH) and providing early warning of aging, it prevents the risk of sudden power outages. Furthermore, it can explain the root causes of performance degradation through SOH internal resistance analysis. It is particularly suitable for performance-sensitive consumer electronics, such as gaming peripherals and professional tools.

[0053] In a preferred embodiment, the MCU control chip 103 can transmit the voltage, state of charge (SOC), health status, temperature, and charge / discharge status information of the lithium battery cell to the Bluetooth adapter 200 via the CC pin of the Type-C female interface module 104. Specifically, the 16-pin Type-C interface typically uses the CC pin for fast charging of the device. Since the fast charging function in the Type-C interface is not required in this solution, the CC pin can be used to transmit the aforementioned data information of the lithium battery cell.

[0054] In a preferred embodiment, the Bluetooth adapter 200 and the smart monitoring terminal 300 can communicate wirelessly via the BLE protocol. This can further reduce system power consumption.

[0055] In a preferred embodiment, the Bluetooth adapter 200 can also store the voltage, state of charge (SOC), state of health (SOH), temperature, and charge / discharge status information of the received lithium battery cell 101. The intelligent monitoring terminal 300 can read the data stored by the Bluetooth adapter 200. By utilizing historical offline cached data, combined with SOC and SOH data, the current state of the lithium-to-dry battery can be accurately determined, improving the reliability of battery use. This is particularly suitable for equipment used in extreme environments, such as outdoor navigation and emergency equipment.

[0056] In a preferred embodiment, the preset threshold for the health status can be set to 150mΩ. For example, the SOH value of the lithium battery cell is detected by the internal resistance method. When the detected SOH resistance value is greater than 150mΩ, the APP issues an alarm message, indicating that the battery's internal resistance has increased significantly, the battery is aging, and needs to be replaced to prevent the risk of sudden power outages. This is particularly suitable for scenarios with high reliability requirements, such as smart door locks and medical monitoring equipment.

[0057] In a preferred embodiment, the Bluetooth adapter end 200 may further include a button and an indicator light. When the button is clicked, the Bluetooth control chip 202 controls the indicator light to display different colors or control different numbers of indicator lights to illuminate based on the state of charge (SCC) value, to indicate the power information of the lithium-to-dry battery end. When the button is double-clicked, the Bluetooth control chip 202 broadcasts the voltage, SCC value, health status value, temperature, and charge / discharge status information of the lithium battery cell. When the button is pressed and held, the Bluetooth control chip 202 controls the Bluetooth adapter end to reset pairing. For example, the Bluetooth adapter end has one indicator light. When the button is clicked, the indicator light displays red when the SCC value is 0%-25%, orange when the SCC value is 25%-50%, blue when the SCC value is 50%-75%, and green when the SCC value is 75%-100%. Alternatively, the Bluetooth adapter may have four indicator lights. A single click illuminates one indicator light when the state of charge (SBC) is 0%-25%, two lights illuminate when the SBC is 25%-50%, three lights illuminate when the SBC is 50%-75%, and all lights illuminate when the SBC is 75%-100%. A double click triggers a data broadcast, reducing unnecessary broadcast power consumption by 90%. A 3-second press resets the pairing process.

[0058] In a preferred embodiment, the intelligent monitoring terminal 300 can wirelessly connect to multiple Bluetooth adapters, each connected to a lithium-to-dry-cell battery. The intelligent monitoring terminal 300 can simultaneously receive information from each lithium-to-dry-cell battery broadcast by multiple Bluetooth adapters. By leveraging Bluetooth for contactless batch reading of battery data, predictive maintenance strategies can be optimized, reducing operation and maintenance costs. This is particularly suitable for large-scale distributed systems, such as industrial wireless sensor networks and IoT nodes.

[0059] In a specific implementation, the lithium-to-dry battery power monitoring app includes a battery power indicator. The app displays different colors of the battery power indicator based on the state of charge (SOC) value. For example, if the SOC value is <20%, the battery power indicator is red; if it is 20%-80%, it is yellow; and if it is greater than 80%, it is green.

[0060] Figure 2and 3 The diagrams show the circuit schematics of the lithium-to-dry battery terminal and the Bluetooth adapter terminal, respectively, according to a preferred embodiment of the present invention. Figure 2 The lithium-ion to dry-cell battery terminal includes a lithium-ion battery cell, a charge / discharge control chip, an MCU (Microcontroller Unit) controller, a Type-C 16-pin female connector, and a Bluetooth adapter (Bluetooth dongle) that connects to the lithium-ion to dry-cell battery terminal. The lithium-ion battery cell provides the MCU controller and charge / discharge control chip with a Bat+ operating voltage. The MCU controller provides the Type-C 16-pin female connector with a Bat+ operating voltage, and the Type-C interface provides the Bluetooth dongle with a Bat+ operating voltage. The MCU controller detects the voltage, current, and internal resistance of the lithium-ion battery cell. The normal voltage of the lithium-ion battery cell is 3.7V. The MCU controller calculates the State of Charge (SOC) value of the lithium-ion battery cell based on the detected current and the State of Harmful Effect (SOH) value based on the detected internal resistance. The charge / discharge control chip detects the temperature of the lithium-ion battery cell and transmits this information to the MCU controller. The MCU controller also monitors the charge / discharge operation status of the charge / discharge control chip to determine the charge / discharge status information of the lithium-ion battery cell. The MCU controller transmits the relevant information of the detected lithium battery cell to the Bluetooth dongle via the UART through the Type-C 16-pin female connector interface. Figure 3 The Bluetooth adapter includes an LDO, a Bluetooth control chip, a Type-C 16-pin male connector, an LED, and a button. The LDO reduces the output voltage (Bat+) of the Type-C 16-pin male connector to 3.3V to power the Bluetooth control chip, typically achieving a static power consumption of less than 1μA. The Bluetooth control chip receives data from the lithium battery cell transmitted via UART through the Type-C 16-pin male connector and broadcasts it. The broadcast can also be triggered by the button, reducing invalid broadcasts. The LED displays the lithium battery cell's charge level. The broadcast interval of the Bluetooth control chip is adjustable and supports Mesh networking. Bluetooth communication can also be encrypted using ECDSA for enhanced data security and stability.

[0061] In the intelligent lithium-to-dry battery power monitoring system of this invention, the battery provides high-capacity, cyclic constant-voltage power supply, enabling approximately 500 charge cycles and ensuring zero-lag operation in devices such as motors and door locks. Real-time monitoring of cell SOC, SOH, voltage, and temperature allows for accurate battery life prediction with an error of less than 3%, and proactive alarms are triggered when parameters exceed limits. Bluetooth dongles easily transmit lithium-ion cell data to the monitoring terminal, enabling real-time monitoring and batch battery device status reading, thus reducing maintenance costs.

[0062] Those skilled in the art will understand that, without conflict, the above-mentioned preferred solutions can be freely combined and superimposed.

[0063] It should be understood that the above embodiments are merely exemplary and not restrictive. Various obvious or equivalent modifications or substitutions that can be made by those skilled in the art regarding the above details without departing from the basic principles of the present invention will be included within the scope of the claims of the present invention.

Claims

1. A lithium-to-dry battery power intelligent monitoring system, characterized in that, Includes a lithium-to-dry battery, a Bluetooth adapter, and a smart monitoring unit. The lithium-to-dry battery terminal includes a lithium battery cell, a charge / discharge management module, an MCU control chip, and a Type-C female connector module; the Bluetooth adapter terminal includes an LDO module, a Bluetooth control chip, and a Type-C male connector module; the lithium-to-dry battery terminal and the Bluetooth adapter terminal can be connected through the Type-C female connector module and the Type-C male connector module, and the Bluetooth adapter terminal and the smart monitoring terminal are wirelessly connected via Bluetooth; The charge / discharge management module is used to detect the temperature of the lithium battery cell and control its charge / discharge. The charge / discharge control includes charging the lithium battery cell through the Type-C female interface module and performing DC-DC step-down control on the lithium battery cell to reduce its output voltage to the standard voltage of a dry cell battery. The MCU control chip is used to detect the voltage, state of charge (SOC), and state of health (SQH) of the lithium battery cell, and transmit these values, along with the temperature and charge / discharge status information, to the Bluetooth adapter through the Type-C female interface module. The LDO module is used to reduce the output voltage of the Type-C male interface module to the operating voltage of the Bluetooth control chip. The Bluetooth control chip receives the voltage, state of charge, health status, temperature and charge / discharge status information of the lithium battery cell through the Type-C male interface module, and broadcasts the voltage, state of charge, health status, temperature and charge / discharge status information of the lithium battery cell to the smart monitoring terminal. The intelligent monitoring terminal is equipped with a lithium-to-dry battery power monitoring APP. The APP displays the voltage, state of charge value, health status value, temperature and charge / discharge status information of the lithium battery cell. When the health status value of the lithium battery cell is greater than the preset health status threshold, the APP issues an alarm message. The intelligent monitoring terminal is wirelessly connected to multiple Bluetooth adapters, each of which is connected to a lithium-to-dry battery. The intelligent monitoring terminal can simultaneously receive information from each lithium-to-dry battery broadcast by multiple Bluetooth adapters.

2. The intelligent monitoring system for lithium-to-dry battery power according to claim 1, characterized in that, The Type-C female connector module and the Type-C male connector module are 16-pin Type-C interfaces. The charge and discharge management module charges the lithium battery cell through the power pin of the Type-C female connector module.

3. The intelligent monitoring system for lithium-to-dry battery power according to claim 1, characterized in that, The MCU control chip uses a combination of the ampere-hour integration method and the open-circuit voltage method to calculate the state of charge value of the lithium battery cell.

4. The intelligent monitoring system for lithium-to-dry battery power according to claim 3, characterized in that, The method for calculating the state of charge (SOC) of the lithium-ion battery cell using a combination of the ampere-hour integration method and the open-circuit voltage method includes: The initial state of charge is calculated using the open-circuit voltage method; The state of charge (SOC) value of the lithium battery cell is calculated using the following formula: ； ； Where ΔQ is the cumulative change in charge, η is the coulombic efficiency, I is the current value of the lithium battery cell (positive during charging and negative during discharging), SOC(0) is the initial state of charge value, and C N Where i is the nominal capacity of the lithium battery cell, k is the sampling sequence number, and Δt is the sampling period.

5. The intelligent monitoring system for lithium-to-dry battery power according to claim 1, characterized in that, The MCU control chip uses the internal resistance growth method to detect the health status value of the lithium battery cell.

6. The intelligent monitoring system for lithium-to-dry battery power according to claim 5, characterized in that, The health status value of a lithium battery cell is calculated using the following formula. ； Among them, R current R is the current internal resistance of the lithium battery cell. initial R is the initial internal resistance of the lithium battery cell at the time of manufacture. EOL This is the internal resistance threshold corresponding to the end of the lithium battery cell's lifespan.

7. The intelligent monitoring system for lithium-to-dry battery power according to claim 2, characterized in that, The MCU control chip transmits the voltage, state of charge, health status, temperature, and charge / discharge status information of the lithium battery cell to the Bluetooth adapter via the CC pin of the Type-C female interface module.

8. The intelligent monitoring system for lithium-to-dry battery power according to claim 1, characterized in that, The Bluetooth adapter also stores the received voltage, state of charge, health status, temperature, and charge / discharge status information of the lithium battery cell, and the smart monitoring terminal can read the data stored by the Bluetooth adapter.

9. The intelligent monitoring system for lithium-to-dry battery power according to any one of claims 1-8, characterized in that, The Bluetooth adapter also includes buttons and indicator lights. When the button is clicked, the Bluetooth control chip controls the indicator light to display different colors or controls different numbers of indicator lights to light up according to the state of charge value, so as to indicate the power information of the lithium-to-dry battery. When the button is double-clicked, the Bluetooth control chip broadcasts the voltage, state of charge, health status, temperature, and charge / discharge status information of the lithium battery cell. When the button is pressed and held, the Bluetooth control chip controls the Bluetooth adapter to reset and pair.

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