Intelligent monitoring system for electric quantity of lithium-to-dry battery

Abstract

The invention discloses a lithium-to-dry battery electric quantity intelligent monitoring system, which comprises a lithium-to-dry battery end, a Bluetooth adapter end and an intelligent monitoring end, and is characterized in that the lithium-to-dry battery end comprises a lithium cell, a charging and discharging management module, an MCU control chip and a Type-C female seat interface module; the Bluetooth adapter end comprises an LDO (Low Dropout Regulator) module, a Bluetooth control chip and a Type-C male socket interface module; the charging and discharging management module is used for detecting the temperature of the lithium battery core and performing charging and discharging control on the lithium battery core; the MCU control chip is used for detecting the voltage, the charge state value and the health state value of the lithium cell and transmitting the detected data to the Bluetooth adapter end; the Bluetooth control chip receives the detected data through the Type-C male socket interface module and broadcasts and outputs the detected data to the intelligent monitoring end; the intelligent monitoring end displays the detected data through the APP, and when the health state value of the lithium cell is larger than a health state preset threshold value, the APP sends out alarm information.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lithium batteries, in particular to a lithium-to-dry battery power intelligent monitoring system. BACKGROUND

[0002] Traditional dry batteries have low energy density, resulting in insufficient endurance, and the discharge curve is steep, which usually causes the voltage to drop rapidly from 1.5V to 0.9V, causing device performance degradation and inability to estimate the remaining power based on voltage. One-time use causes resource waste (global annual waste exceeds 15 billion pieces), zero cycle life, high internal resistance characteristics (100-300mΩ) cause voltage collapse in high-current scenarios (such as smart door lock motor start), high long-term implicit cost, and unmonitored full life cycle, resulting in high risk of sudden power failure and passive operation and maintenance. These defects make it difficult to replace in intelligent, high-reliability, and sustainable development scenarios.

[0003] Lithium batteries are a class of batteries that use lithium metal or lithium alloy as positive / negative electrode materials and use non-aqueous electrolyte solutions. With the development of lithium battery science and technology and applications, lithium batteries have become the mainstream in the battery category due to their high energy storage, long service life, high power bearing, light weight, and strong adaptability to high and low temperatures. They are applied in multiple industries, such as smart door locks, medical monitoring devices, industrial wireless sensor networks, Internet of Things nodes, game peripherals, professional tools, outdoor navigation, emergency equipment, etc.

[0004] With such a wide range of applications, involving high-reliability-demand scenarios, large-scale distributed systems, performance-sensitive consumer electronics, and extreme environment equipment, power and life cycle detection are particularly important. SUMMARY

[0005] Based on the above status, the main purpose of the present application is to provide a lithium-to-dry battery power intelligent monitoring system, which realizes the digital energy upgrade of traditional dry battery devices, and the entire product form is more miniaturized, more convenient for users to use, and more convenient for intelligent monitoring.

[0006] To achieve the above purpose, the technical scheme adopted by the present application is as follows: The application discloses a lithium dry battery power intelligent monitoring system, which comprises a lithium dry battery end, a Bluetooth adapter end and an intelligent monitoring end, wherein the lithium dry battery end comprises a lithium battery core, a charge-discharge management module, an MCU control chip and a Type-C female seat interface module; the Bluetooth adapter end comprises an LDO module, a Bluetooth control chip and a Type-C male seat interface module; the lithium dry battery end and the Bluetooth adapter end can be connected through the Type-C female seat interface module and the Type-C male seat interface module, the Bluetooth adapter end and the intelligent monitoring end are connected wirelessly through Bluetooth; the charge-discharge management module is used for detecting the temperature of the lithium battery core and performing charge-discharge control on the lithium battery core, the charge-discharge control comprises charging the lithium battery core through the Type-C female seat interface module and performing DC-DC step-down control on the lithium battery core so as to reduce the output voltage of the lithium battery core to a standard voltage of a dry battery; the MCU control chip is used for detecting the voltage, the state of charge value and the state of health value of the lithium battery core, and transmitting the voltage, the state of charge value and the state of health value, the temperature and the charge-discharge state information of the lithium battery core to the Bluetooth adapter end through the Type-C female seat interface module; the LDO module is used for reducing the output voltage of the Type-C male seat interface module to the working voltage of the Bluetooth control chip; the Bluetooth control chip receives the voltage, the state of charge value, the state of health value, the temperature and the charge-discharge state information of the lithium battery core through the Type-C male seat interface module, and broadcasts the voltage, the state of charge value, the state of health value, the temperature and the charge-discharge state information of the lithium battery core to the intelligent monitoring end; the intelligent monitoring end is installed with a lithium dry battery power monitoring APP, the voltage, the state of charge value, the state of health value, the temperature and the charge-discharge state information of the lithium battery core are displayed through the APP, and when the state of health value of the lithium battery core is greater than a preset threshold value of the state of health, the APP sends an alarm information.

[0007] Preferably, the Type-C female seat interface module and the Type-C male seat interface module are 16pin Type-C interfaces, and the charge-discharge management module charges the lithium battery core through the power pin of the Type-C female seat interface module.

[0008] Preferably, when the charge-discharge management module performs DC-DC step-down control on the lithium battery core, the standard voltage of the dry battery is 1.5+ / -0.05V.

[0009] Preferably, the MCU control chip calculates the state of charge value of the lithium battery core by combining the ampere-hour integration method and the open-circuit voltage method.

[0010] Preferably, the method for calculating the state of charge value of the lithium battery cell by combining the ampere-hour integration method and the open circuit voltage method comprises: calculating an initial state of charge value by the open circuit voltage method; and calculating the state of charge value of the lithium battery cell by the following formula: . . wherein, ΔQ is the cumulative charge change, η is the coulombic efficiency, I is the lithium battery cell current value, positive during charging and negative during discharging, SOC(0) is the initial state of charge value, C N is the nominal capacity of the lithium battery cell, i is the sampling sequence number, and k is the total number of samples.

[0011] Preferably, the MCU control chip detects the health state value of the lithium battery cell by the internal resistance growth method.

[0012] Preferably, the health state value of the lithium battery cell is calculated by the following formula, . wherein, R current is the current internal resistance of the lithium battery cell, R initial is the initial internal resistance of the lithium battery cell at the factory, and R EOL is the internal resistance threshold value corresponding to the end of the life of the lithium battery cell.

[0013] Preferably, the MCU control chip transmits the voltage, state of charge value, health state value, temperature and charging / discharging state information of the lithium battery cell to the Bluetooth adapter end through the CC pin of the Type-C female seat interface module.

[0014] Preferably, the Bluetooth adapter end also stores the received voltage, state of charge value, health state value, temperature and charging / discharging state information of the lithium battery cell, and the intelligent monitoring end can read the data stored in the Bluetooth adapter end.

[0015] Preferably, the Bluetooth adapter end further comprises a button and an indicator, when the button is clicked once, the Bluetooth control chip controls the indicator to display different colors according to the state of charge value, or controls different numbers of indicator lights to be lit to indicate the power information of the lithium battery cell end; when the button is clicked twice, the Bluetooth control chip broadcasts the voltage, state of charge value, health state value, temperature and charging / discharging state information of the lithium battery cell; when the button is held down, the Bluetooth control chip controls the Bluetooth adapter end to reset pairing.

[0016] Preferably, the intelligent monitoring end is wirelessly connected with a plurality of the Bluetooth adapter ends, each of the Bluetooth adapter ends is connected with one of the lithium-to-dry battery, and the intelligent monitoring end can simultaneously receive information of each of the lithium-to-dry battery broadcasted by the plurality of Bluetooth adapter ends.

[0017] The technical scheme of the present application aims at a series of technical problems existing in the use of traditional dry batteries, and realizes intelligent control of charging and discharging at the battery end, intelligent monitoring of a plurality of operation data of the lithium battery cell, broadcast of the monitoring data through the miniaturized Bluetooth adapter end, that is, the Bluetooth Dongle end, real-time viewing of the data of the battery on the side of the intelligent monitoring end, and energy digital upgrading of the traditional dry battery equipment. The whole product is more miniaturized, more convenient for users to use, and more convenient for intelligent monitoring.

[0018] Other beneficial effects of the present application will be described in the specific embodiments by introducing specific technical features and technical schemes, and those skilled in the art should understand the beneficial technical effects brought by the technical features and technical schemes through the introduction of the technical features and technical schemes. BRIEF DESCRIPTION OF DRAWINGS

[0019] The preferred embodiment of the lithium-to-dry battery power intelligent monitoring system according to the present application will be described below with reference to the accompanying drawings. In the drawings: Figure 1 It is a lithium-to-dry battery power intelligent monitoring system block diagram according to a preferred embodiment of the present application; Figure 2 It is a lithium-to-dry battery end circuit schematic diagram according to a preferred embodiment of the present application; Figure 3 It is a Bluetooth adapter end circuit schematic diagram according to a preferred embodiment of the present application. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely through embodiments with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0021] In the description of the present application, if several meanings are contained in one, the meaning of plural is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, within, etc. are understood as including the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the order of the indicated technical features.

[0022] In the description of the present application, unless otherwise expressly limited, the setting of words such as "or" should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.

[0023] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0024] Figure 1The lithium dry battery power intelligent monitoring system block diagram according to the preferred embodiment of the application comprises a lithium dry battery end 100, a Bluetooth adapter end (Bluetooth Dongle) 200 and an intelligent monitoring end 300. The lithium dry battery end 100 comprises a lithium cell 101, a charge and discharge management module 102, an MCU control chip 103 and a Type-C female seat interface module 104. The Bluetooth adapter end 200 comprises an LDO module (low dropout linear regulator) 201, a Bluetooth control chip 202 and a Type-C male seat interface module 203. The lithium dry battery end 100 and the Bluetooth adapter end 200 can be connected through the Type-C female seat interface module 104 and the Type-C male seat interface module 203. The Bluetooth adapter end 200 and the intelligent monitoring end 300 are connected wirelessly through Bluetooth. The charge and discharge management module 102 is used for detecting the temperature of the lithium cell 101 and controlling the charging and discharging of the lithium cell 101. The charge and discharge control comprises charging the lithium cell 101 through the Type-C female seat interface module 104 and DC-DC step-down control of the lithium cell 101 to reduce the output voltage of the lithium cell 101 to the standard voltage of the dry battery. The MCU control chip 103 is used for detecting the voltage, state of charge (SOC) and state of health (SOH) of the lithium cell 101, and transmitting the voltage, state of charge, state of health, temperature and charge and discharge state information of the lithium cell 101 to the Bluetooth adapter end 200 through the Type-C female seat interface module 104. The LDO module 201 is used for reducing the output voltage of the Type-C male seat interface module 203 to the working voltage of the Bluetooth control chip 202. The Bluetooth control chip 202 receives the voltage, state of charge, state of health, temperature and charge and discharge state information of the lithium cell 101 through the Type-C male seat interface module 203, and broadcasts the state of charge, state of health, output voltage, temperature and charge and discharge state information of the lithium cell 101 to the intelligent monitoring end 300. The intelligent monitoring end 300 is installed with a lithium dry battery power monitoring APP, which displays the voltage, state of charge, state of health, temperature and charge and discharge state information of the lithium cell 101 through the APP. When the state of health of the lithium cell 101 is greater than the preset threshold value of the state of health, the APP sends an alarm information.

[0025] The technical scheme of the present application aims at a series of technical problems existing in the use of traditional dry batteries. By integrating lithium-to-dry battery (1.5V), SOC (state of charge), SOH (state of health) algorithm and Bluetooth transmission, intelligent control of charging and discharging is realized at the battery end, and various operating data of the lithium battery cell are intelligently monitored. Through the miniaturized Bluetooth adapter end, that is, the Bluetooth Dongle end, the broadcast of monitoring data is realized. Users can view the data of the battery in real time on the intelligent monitoring end side, realizing the energy digital upgrading of the traditional dry battery equipment. The whole product form is more miniaturized, more convenient for users to use, and the intelligent monitoring is more convenient.

[0026] The intelligent monitoring end in the present application can be a smart device such as a smart phone, a smart tablet, a computer end, etc. It can also be a detection device specially used for detecting batteries. The battery end realizes the hardware-level constant voltage of the lithium battery cell and the software-level SOC and SOH monitoring through the charging and discharging management module and the MCU control chip. At the same time, the Type-C charging and the lithium battery can be recycled, avoiding the waste of disposable resources. The Bluetooth Dongle end and the intelligent monitoring end adopt LDO+Bluetooth SoC+APP combination to build a super low-power interaction system. The battery end completes energy conversion and metering, and the Bluetooth end realizes data transmission and human-computer interaction, forming a "perception-computation-interaction" closed loop, and redefining the dry battery energy infrastructure. The charging and discharging management module in the present application can be a chip with charging and discharging management function.

[0027] In a preferred embodiment, the Type-C female seat interface module and the Type-C male seat interface module can select a 16pin Type-C interface. The charging and discharging management module 102 can charge the lithium battery cell 101 through the power pin of the Type-C female seat interface module. In a specific embodiment, the charging voltage can reach 5V, and the current can reach 1A.

[0028] In a preferred embodiment, when the charging and discharging management module 102 performs DC-DC step-down control on the lithium battery cell 101, the standard voltage of the dry battery can be 1.5±0.05V. That is, the standard voltage of the dry battery with an error accuracy of 0.5V can be achieved. The high-capacity periodic constant voltage power supply of the battery can be realized.

[0029] SOC refers to the ratio of the remaining power in the current battery to the total capacity under the full charge state, which is usually expressed in percentage (%). SOC is the most core parameter for charging and discharging control, power balance, and overcharge and overdischarge prevention.

[0030] In a preferred embodiment, the MCU control chip 103 can use a method combining ampere-hour integration and open circuit voltage method (OCV method) to calculate the state of charge value (SOC) of the lithium battery. In a specific embodiment, the ampere-hour integration method can be used as the main method, and the OCV method can be used for calibration at regular intervals. The open circuit voltage of the lithium battery has a fixed relationship with the SOC, and the OCV-SOC curve can be obtained through experiments.

[0031] In a preferred embodiment, the ampere-hour integration method requires an accurate initial SOC to perform the calculation, so the open circuit voltage method can be used to calculate the initial SOC. The ampere-hour integration method can use discrete accumulation with a fixed sampling period (such as Δt = 1 second). The sampling period Δt is small enough, and the formula of the ampere-hour integration method can be: ; ; Where ΔQ is the cumulative charge change, η is the coulomb efficiency, also known as the charge and discharge loss coefficient, I is the lithium battery current value, positive during charging and negative during discharging, SOC(0) is the initial state of charge value (initial SOC value), C N is the nominal capacity of the lithium battery, i is the sampling sequence number, and k is the total number of samples.

[0032] During actual testing, an accurate SOC value can also be obtained using the OCV-SOC lookup table method when the voltage tends to be stable after the lithium battery is left for a long time, and the result of the ampere-hour integration method can be calibrated.

[0033] In other embodiments, equivalent circuit model + Kalman filter, neural network / machine learning method, etc. can also be used to detect the SOC value of the lithium battery.

[0034] SOH is used to measure the current state of the battery compared to the performance of a new battery. It describes the irreversible performance degradation of the battery as it is used and time passes. SOH is also usually expressed as a percentage, with 100% representing a brand new battery and 0% usually representing a battery that has degraded to the point where it needs to be replaced. SOH mainly measures the aging of the battery from two dimensions:

[0035] (1) Capacity decay: refers to the degree of decline in the maximum amount of electricity that the battery can store relative to its initial rated capacity.

[0036] (2) Internal resistance growth: refers to the increase in the internal resistance of the battery as it is used. The increase in 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. At high loads, the voltage drop is more pronounced, which can cause the device to automatically shut down or performance to decrease.

[0037] In a preferred embodiment, the MCU control chip 103 can use the internal resistance growth method to detect the state of health value of the lithium battery. In a specific embodiment, the SOH value of the lithium battery can be calculated using the following formula: ; wherein R current is the current internal resistance of the lithium battery, R initial is the initial internal resistance of the lithium battery at the time of factory shipment, and R EOL is the corresponding internal resistance threshold value at the end of the life of the lithium battery. Specifically, at the moment of charging and discharging of the lithium battery, R current =ΔV / ΔI can be calculated according to the voltage jump (ΔV) and the current jump (ΔI).

[0038] Through accurate SOC and SOH dual-dimensional monitoring and aging early warning, the risk of sudden power failure is prevented. The root cause of performance degradation can also be explained through SOH internal resistance analysis. It is particularly suitable for performance-sensitive consumer electronics, such as game peripherals, professional tools, etc.

[0039] In a preferred embodiment, the MCU control chip 103 can transmit the voltage, state of charge value, state of health value, temperature, and charging and discharging status information of the lithium battery to the Bluetooth adapter end 200 through the CC pin of the Type-C female socket interface module 104. Specifically, the 16-pin Type-C interface is usually used to fast charge the device using the CC pin. Since the fast charging function in the Type-C is not needed in this scheme, the CC pin can be used to transmit the above data information of the lithium battery.

[0040] In a preferred embodiment, the Bluetooth adapter end 200 and the intelligent monitoring end 300 can use BLE protocol for Bluetooth wireless communication. The system power consumption can be further reduced.

[0041] In a preferred embodiment, the Bluetooth adapter end 200 can also store the received voltage, state of charge value, state of health value, temperature, and charging and discharging status information of the lithium battery 101, and the intelligent monitoring end 300 can read the data stored by the Bluetooth adapter end 200. By using historical offline cache data, combined with SOC and SOH data, the current state of the lithium battery can be accurately determined, the reliability of the battery usage can be improved, and it is particularly suitable for equipment in extreme environments, such as outdoor navigation, emergency equipment, etc.

[0042] In a preferred embodiment, the health state preset threshold can be set to 150 mΩ. For example, the SOH value of the lithium battery is detected by the internal resistance method. When the detected SOH resistance value is greater than 150 mΩ, the APP sends an alarm message, indicating that the battery resistance has increased seriously, the battery has aged, and needs to be replaced to prevent sudden power failure. It is particularly suitable for high reliability scenarios such as smart door locks, medical monitoring devices, etc.

[0043] In a preferred embodiment, the Bluetooth adapter end 200 can also 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 according to the state of charge value, or controls different numbers of indicator lights to light up to indicate the power information of the lithium battery end. When the button is double-clicked, the Bluetooth control chip 202 broadcasts the voltage, state of charge value, health state value, temperature and charge-discharge state information of the lithium battery. When the button is long-pressed, 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 state of charge value is 0%-25%, the indicator light displays red, the state of charge value is 25%-50%, the indicator light displays orange, the state of charge value is 50%-75%, the indicator light displays blue, and the state of charge value is 75%-100%, the indicator light displays green. Alternatively, the Bluetooth adapter end has four indicator lights. When the button is clicked, the state of charge value is 0%-25%, one indicator light is lit, the state of charge value is 25%-50%, two indicator lights are lit, the state of charge value is 50%-75%, three indicator lights are lit, and the state of charge value is 75%-100%, all indicator lights are lit. When the double-click operation is performed, the button triggers the execution of data information broadcast, reducing 90% of the energy consumption of invalid broadcast. When long-pressed for 3 seconds, reset pairing is performed.

[0044] In a preferred embodiment, the smart monitoring end 300 can be wirelessly connected to multiple Bluetooth adapter ends, each Bluetooth adapter end being connected to one lithium battery. The smart monitoring end 300 can simultaneously receive information of each lithium battery broadcast by the multiple Bluetooth adapter ends. Based on the Bluetooth non-contact batch reading of battery data, the predictive maintenance strategy is optimized, and the operation and maintenance cost is reduced. It is particularly suitable for large-scale distributed systems such as industrial wireless sensor networks, Internet of Things nodes, etc.

[0045] In a specific embodiment, the lithium battery power monitoring APP includes a battery power indicator. The lithium battery power monitoring APP displays different colored battery power indicators according to the state of charge value. For example, the state of charge value is less than 20%, the battery power indicator displays red, 20%-80% displays yellow, and greater than 80% displays green.

[0046] Figure 2and 3 The lithium dry battery end circuit schematic and the Bluetooth adapter end circuit schematic of a preferred embodiment of the application are shown in FIG. 1 and FIG. 2 respectively. Figure 2 In FIG. 1, the lithium dry battery end includes a lithium battery cell, a charge and discharge control chip, an MCU master control, and a Type-C 16pin female seat, and the Bluetooth adapter end, that is, the Bluetooth Dongle, connected to the lithium dry battery end. Among them, the lithium battery cell provides the working voltage Bat+ for the MCU master control and the charge and discharge control chip, the MCU master control provides the working voltage Bat+ for the Type-C 16pin female seat, and the Type-C interface provides the working voltage Bat+ for the Bluetooth Dongle. The MCU master control detects the voltage, current, and internal resistance of the lithium battery cell, and the normal value of the lithium battery cell voltage value can be 3.7V. The MCU master control calculates the SOC value of the lithium battery cell according to the detected current of the lithium battery cell, and calculates the SOH value of the lithium battery cell according to the detected internal resistance value of the lithium battery cell. The charge and discharge control chip detects the temperature of the lithium battery cell and transmits it to the MCU master control, and the MCU master control also detects the charge and discharge working state of the charge and discharge control chip, thereby determining the charge and discharge state information of the lithium battery cell. The MCU master control transmits the detected related information of the lithium battery cell to the Bluetooth Dongle end through the Type-C 16pin female seat interface through Uart. Figure 3 In FIG. 2, the Bluetooth adapter end includes an LDO, a Bluetooth control chip, a Type-C 16pin male seat, an LED, and a button. The LDO reduces the output voltage Bat+ of the Type-C 16pin male seat to 3.3V to power the Bluetooth control chip, and the static power consumption can usually be less than 1uA. The Bluetooth control chip receives the data information of the lithium battery cell transmitted by the Type-C 16pin male seat through Uart and broadcasts it. The Bluetooth control chip can also be triggered by the button to perform broadcasting, thereby reducing invalid broadcasting. The LED lamp is used to display the lithium battery cell power value. Among them, the broadcast interval of the Bluetooth control chip is adjustable, and supports Mesh networking. The Bluetooth communication can also select ECDSA encryption, and the data is more secure and stable.

[0047] In the lithium dry battery power intelligent monitoring system of the application, the battery high-capacity period constant voltage power supply can realize about 500 times of cycle charging, and can ensure that the motor, door lock and other devices are not stuck. Real-time detection of cell SOC, SOH, voltage, temperature and other information can accurately predict battery life with a prediction error of less than 3%, and actively alarm when parameters exceed the standard. The Bluetooth Dongle easily transmits the lithium battery cell data to the monitoring end to realize real-time monitoring, and can also realize batch battery device state reading to reduce operation and maintenance cost.

[0048] Those skilled in the art can understand that the above preferred schemes can be freely combined and superimposed without conflict.

[0049] It should be understood that the above-described implementations are merely exemplary, and are not limiting, and that various obvious or equivalent modifications or substitutions for the above-described details can be made by those skilled in the art without departing from the spirit of the present application, and all such modifications or substitutions are intended to be included within the scope of the claims of the present application.

Claims

1. A lithium dry battery power intelligent monitoring system, characterized in that, It comprises a lithium-to-dry battery end, a Bluetooth adapter end and a smart monitoring end, The lithium-to-dry battery end comprises a lithium cell, a charge-discharge management module, an MCU control chip and a Type-C female seat interface module; the Bluetooth adapter end comprises an LDO module, a Bluetooth control chip and a Type-C male seat interface module; the lithium-to-dry battery end and the Bluetooth adapter end can be connected through the Type-C female seat interface module and the Type-C male seat interface module, and the Bluetooth adapter end and the smart monitoring end are connected wirelessly through Bluetooth. The charge-discharge management module is used for detecting the temperature of the lithium cell and controlling the charging and discharging of the lithium cell, and the charging and discharging control comprises charging the lithium cell through the Type-C female seat interface module and DC-DC step-down control of the lithium cell to reduce the output voltage of the lithium cell to the standard voltage of a dry battery; the MCU control chip is used for detecting the voltage, state of charge value and state of health value of the lithium cell, and transmitting the voltage, state of charge value and state of health value, temperature and charge-discharge state information of the lithium cell to the Bluetooth adapter end through the Type-C female seat interface module; The LDO module is used for reducing the output voltage of the Type-C male seat interface module to the working voltage of the Bluetooth control chip, and the Bluetooth control chip receives the voltage, state of charge value, state of health value, temperature and charge-discharge state information of the lithium cell through the Type-C male seat interface module and broadcasts the voltage, state of charge value, state of health value, temperature and charge-discharge state information of the lithium cell to the smart monitoring end; The smart monitoring end is installed with a lithium-to-dry battery power monitoring APP, and the voltage, state of charge value, state of health value, temperature and charge-discharge state information of the lithium cell are displayed through the APP, and when the state of health value of the lithium cell is greater than a preset threshold value, the APP sends an alarm information.

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

3. The lithium switch battery power intelligent monitoring system according to claim 1, characterized in that, The MCU control chip calculates the state of charge value of the lithium cell by combining the ampere-hour integration method and the open-circuit voltage method.

4. The lithium switch battery power intelligent monitoring system according to claim 3, characterized in that, The method for calculating the state of charge value of the lithium cell by combining the ampere-hour integration method and the open-circuit voltage method comprises: calculating the initial state of charge value by the open-circuit voltage method; calculating the state of charge value of the lithium cell by the following formula: Wherein, ΔQ is the cumulative charge change, η is the coulombic efficiency, I is the lithium cell current value, positive during charging and negative during discharging, SOC(0) is the initial state of charge value, C N is the nominal capacity of the lithium cell, i is the sampling sequence number, and k is the total number of samples.

5. The lithium switch battery power intelligent monitoring system according to claim 1, characterized in that, The MCU control chip detects the state of health value of the lithium cell by the internal resistance growth method.

6. The lithium switch battery power intelligent monitoring system according to claim 5, characterized in that, The state of health value of the lithium cell is calculated by the following formula, wherein R current is the current internal resistance of the lithium cell, R initial is the initial internal resistance of the lithium cell at factory, R EOL is the internal resistance threshold value corresponding to the end of life of the lithium cell.

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

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

9. The lithium primary battery power intelligent monitoring system according to any one of claims 1-8, characterized in that, The Bluetooth adapter end also includes a key and an indicator, When the key is clicked, the Bluetooth control chip controls the indicator to display different colors according to the state of charge value, or controls different numbers of indicator lights to be lit to indicate the power information of the lithium dry battery end; When the key is double-clicked, the Bluetooth control chip broadcasts the voltage, state of charge value, state of health value, temperature and charge-discharge state information of the lithium cell; When the key is long-pressed, the Bluetooth control chip controls the Bluetooth adapter end to reset pairing.

10. The lithium primary battery power intelligent monitoring system according to any one of claims 1-8, characterized in that, The intelligent monitoring end is wirelessly connected with a plurality of Bluetooth adapter ends, each Bluetooth adapter end is connected with one lithium dry battery, and the intelligent monitoring end can simultaneously receive the information of each lithium dry battery broadcast by the plurality of Bluetooth adapter ends.

Images