Lithium battery fire risk monitoring device and detection algorithm thereof

Abstract

The invention provides a lithium battery fire risk monitoring device and a detection algorithm thereof, and relates to the technical field of lithium battery fire early warning, the lithium battery fire risk monitoring device comprises a CRT graphic display and fire alarm controllers, the CRT graphic display is electrically connected with the fire alarm controllers, and the adjacent fire alarm controllers are electrically connected. The surface of the fire alarm controller is connected with a first line device, a second line device and a third line device, the surface of the third line device is connected with a fourth line device, and the surface of the fire alarm controller is connected with four sets of line devices to perform simultaneous fire risk early warning and monitoring inside and outside the lithium battery. By monitoring key parameters such as temperature, pressure, electrolyte gas release and the like of the lithium battery in real time and combining a detection algorithm, early warning is given out at the first stage of thermal runaway of the lithium battery, and the early warning mechanism enables related personnel to take intervention measures such as power disconnection and isolation starting in time, so that development of thermal runaway is effectively blocked, and the service life of the lithium battery is prolonged. The occurrence probability of fire disasters is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery fire early warning, and in particular to a lithium battery fire risk monitoring device and a detection algorithm thereof. Background Art

[0002] There are three stages of thermal runaway in lithium batteries. Stage one is the reversible stage. The lithium battery's own protection mechanism is activated, and the electrolyte gas is released through the battery's built-in pressure relief valve. At this time, if the lithium battery is intervened or isolated, there is more than a 90% chance of blocking the occurrence of thermal runaway. Stages two and three are irreversible stages. In stage two, the lithium battery's self-protection mechanism can no longer maintain the stable operation of the battery itself, and a large amount of smoke and heat are generated. At this time, the thermal runaway cannot be reversed. In stage three, thermal runaway begins to spread rapidly between lithium batteries, causing huge losses and safety hazards.

[0003] The above patent documents and prior art have the following technical problems when used:

[0004] Problem 1: When using lithium battery fire warning, early warning control of lithium batteries cannot be achieved, resulting in a high probability of lithium battery fire, which is not conducive to actual safe use;

[0005] Problem 2: When detecting potential fire hazards of lithium batteries, the internal equipment is not very targeted and cannot provide targeted warnings for the thermal runaway stage of lithium batteries;

[0006] Problem three: There is insufficient linkage between the various controllers of lithium battery detection devices, resulting in untimely information transmission between devices and slow response speed. Summary of the invention

[0007] Technical issues solved

[0008] In view of the shortcomings of the prior art, the present invention provides a lithium battery fire risk monitoring device and a detection algorithm thereof, which solves the following problems:

[0009] 1. It is impossible to carry out early warning control for the early thermal runaway stage of lithium batteries, resulting in low safety;

[0010] 2. When warning for lithium batteries, external detection is generally used, and thermal runaway warning cannot be carried out in a targeted manner;

[0011] 3. Insufficient linkage between control devices, resulting in failure to respond promptly when warning of fire.

[0012] Technical Solution

[0013] To achieve the above objectives, the present invention is implemented through the following technical solutions: a lithium battery fire risk monitoring device, comprising a CRT graphic display and a fire alarm controller, the CRT graphic display is electrically connected to the fire alarm controller, adjacent fire alarm controllers are electrically connected, the surface of the fire alarm controller is connected with a first line device, a second line device, and a third line device, the surface of the third line device is connected with a fourth line device, the first line device includes an alarm linkage bus, a 24V power line and a telephone signal line, the second line device includes an alarm linkage bus, a 24V power line, a fire broadcast line and a CAN bus, the third line device includes a direct start control line and a CAN networking bus, the surface of the CAN networking bus is connected with a fourth line device, the fire alarm controller further includes an embedded AI processing module, and the embedded AI processing module can perform machine learning and model training based on real-time data , to identify specific abnormal patterns and trends, the module can dynamically adjust the sensitivity of the detector according to historical data and real-time collected data, and automatically update the alarm threshold when a new abnormal pattern is found; the fire alarm controller communicates with the cloud server through the wireless communication module, and the cloud server can store, analyze and process the monitoring data of multiple devices to form a multi-dimensional data analysis platform, which can establish specific risk models for different types of lithium batteries and provide real-time status assessment and fault prediction; the fire alarm controller is provided with a touch screen on the surface, through which the user can view the status and historical data of the lithium battery in real time, and can directly adjust parameters, view logs and generate reports on the device; the fire alarm controller integrates a remote diagnosis function, allowing technicians to monitor, diagnose and maintain the equipment in real time through the remote access interface, and trigger emergency response measures when necessary, such as shutting down the power or starting the backup system.

[0014] Preferably, the surface of the alarm linkage bus of the first line equipment is electrically connected to the short-circuit isolator, and a fire display panel, a suction smoke detector, a temperature detector, a manual alarm button, a fire hydrant button, an audible and visual alarm, an active device input module and a passive device input module are provided in parallel on the side of the short-circuit isolator.

[0015] Preferably, an audible and visual alarm and a passive device input module are connected in parallel on the surface of the 24V power line of the first line device, and a manual alarm button is electrically connected on the surface of the telephone signal line identified by the first line.

[0016] Preferably, the alarm linkage bus on the surface of the second line equipment is electrically connected to a short-circuit isolator, and a suction smoke detector, a temperature detector, a water flow indicator input module, a signal butterfly valve input module, a pressure switch input module, a linear beam suction smoke detector input module, a speaker input / output module, a fire shutter door input / output module, a smoke exhaust vent input / output module and a non-coding sound and light input / output module are arranged in parallel on the side of the short-circuit isolator.

[0017] Preferably, a fire display panel, a speaker input / output module, a fire shutter door input / output module, a smoke exhaust vent input / output module and a non-coding sound and light input / output module are provided in parallel on the surface of the 24V power line of the second line device.

[0018] Preferably, a speaker input / output module is electrically connected to the surface of the fire broadcast line of the second line device, and a fire display panel is electrically connected to the surface of the CAN bus of the second line device.

[0019] Preferably, the third line equipment includes two groups of direct start control lines, and the surfaces of the two groups of direct start control lines are respectively connected to a fire pump switching module and a sprinkler pump switching module, and there are multiple groups of fire pump switching modules and sprinkler pump switching modules.

[0020] Preferably, a gas fire extinguishing controller is connected to the surface of the CAN networking bus of the third line device, the fourth line device includes four groups of lines connected to the surface of the gas fire extinguishing controller, the surface of the gas fire extinguishing controller is respectively connected with a solenoid valve and a pressure switch, an emergency stop button, a gas release alarm and an audible and visual alarm are connected in series on one side of the gas fire extinguishing controller, and a manual alarm button, a temperature detector and an inhalation smoke detector are connected in parallel on the other side of the gas fire extinguishing controller.

[0021] Preferably, a lithium battery fire risk monitoring device and its detection algorithm, the detection algorithm of the fire alarm controller is as follows:

[0022] Sp1: Initialization stage, set the initial state of the detector to "normal monitoring", load the detector sensitivity settings, which may need to be adjusted according to the lithium battery type and the type of gas and smoke expected to be monitored, and initialize the detection cycle, that is, how often the detector detects the surrounding environment;

[0023] Sp2: Environmental data collection. In each detection cycle, an inhalation smoke detector is used to detect the gas concentration and smoke particles in the environment around the lithium battery, and the detected data is recorded, including but not limited to the concentration of specific gases such as hydrogen and carbon monoxide;

[0024] Sp3: Data processing and anomaly detection: Analyze the collected data to determine whether there are abnormal values ​​or trends, and use the preset threshold to determine whether the gas concentration exceeds the normal range. If an abnormality is detected, proceed to the next step of judgment;

[0025] Sp4: Lithium battery status assessment: Based on the detected gas concentration and smoke particles, combined with the known characteristics and failure modes of lithium batteries, a preliminary assessment of the current status of the lithium battery is conducted. The assessment results include: normal lithium battery, potential abnormality, or immediate warning;

[0026] Sp5: Early warning and response. If the evaluation results show that the lithium battery has a potential abnormality or serious failure risk, the early warning mechanism is triggered, and an early warning signal is issued through an audible and visual alarm, a CRT graphic display or a remote monitoring system. If the system is connected to a lithium battery management system or other related equipment, the early warning information is sent to these systems so that further measures can be taken, such as stopping charging or discharging, or conducting more detailed diagnosis.

[0027] Sp6: Fault record and report, recording each detection result, warning record, and evaluation result of lithium battery status.

[0028] Beneficial Effects

[0029] The present invention provides a lithium battery fire risk monitoring device and its detection algorithm. It has the following beneficial effects:

[0030] 1. The CRT graphic display of the present invention is connected to the fire alarm controller, and four groups of line equipment are connected through the surface of the fire alarm controller to perform simultaneous internal and external fire risk early warning monitoring of the lithium battery. By real-time monitoring of key parameters of the lithium battery such as temperature, pressure, electrolyte gas release, etc., combined with the detection algorithm, the suction smoke detector can sensitively capture the trace smoke generated in the early stage of the lithium battery fire, thereby providing an early warning before the fire actually breaks out. This early warning capability greatly shortens the time from the occurrence to the discovery of the fire, and gains precious time for taking emergency measures. It can issue an early warning in the first stage of thermal runaway of the lithium battery. This early warning mechanism enables relevant personnel to take intervention measures in time, such as disconnecting the power supply, starting isolation measures, etc., thereby effectively blocking the development of thermal runaway and reducing the probability of fire.

[0031] 2. The present invention uses high-precision sensors and reliable signal processing circuits. The suction smoke detector uses air sampling technology, which can detect very small smoke particles and improve the sensitivity and accuracy of detection. This is crucial for timely discovery of potential fire hazards of lithium batteries, ensuring the accuracy and real-time monitoring of key parameters of lithium batteries, so that the entire fire alarm controller integrates automatic recording of fire alarms, supervision, faults, linkage and operation events, and integrated operation. At the same time, the detection algorithm is designed based on the first stage characteristics of lithium battery thermal runaway, which can accurately determine the state of the lithium battery and avoid safety risks caused by false alarms or missed alarms.

[0032] 3. The present invention is connected to other controllers through an alarm linkage bus. When the suction smoke detector detects an abnormality, it can quickly trigger the early warning mechanism and send out early warning signals through a variety of methods such as CRT graphic display, sound and light alarm, etc. At the same time, the device also supports linkage with equipment such as lithium battery management system and remote monitoring system to achieve rapid transmission and sharing of fire information and linkage control between equipment. When an early warning or alarm occurs, the device can quickly send a signal to other controllers to start corresponding emergency measures such as starting the exhaust system and shutting down non-fire power supplies. This linkage control mechanism improves the response speed of the system, helps to quickly control the fire when a fire occurs, and reduces losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Flowchart of the algorithm of the present invention. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Specific embodiment one:

[0036] like Figure 1As shown, a lithium battery fire risk monitoring device includes a CRT graphic display and a fire alarm controller, the CRT graphic display is electrically connected to the fire alarm controller, adjacent fire alarm controllers are electrically connected, the surface of the fire alarm controller is connected with a first line device, a second line device, and a third line device, the surface of the third line device is connected with a fourth line device, each fire alarm controller can be connected to a maximum of 16 loops, each loop can be equipped with 200 addressable devices and 40 fire display panels, the entire fire alarm system can form a peer-to-peer network with 64 fire alarm controllers at the same time, and can be connected to a fire control room graphic display device to form a comprehensive fire alarm system, the fire alarm controller core adopts a 32-bit microprocessor, with high stability and powerful data processing capabilities, the fire alarm controller has a new upload and download function, there is no need to repeat the operation on the controller, a U disk can be easily handled, the efficiency is improved, manual registration and automatic registration modes greatly shorten the registration time and improve debugging efficiency.

[0037] The first line equipment includes an alarm linkage bus, a 24V power line and a telephone signal line, the second line equipment includes an alarm linkage bus, a 24V power line, a fire broadcast line and a CAN bus, the third line equipment includes a direct start control line and a CAN networking bus, and a fourth line equipment is connected on the surface of the CAN networking bus, which is connected through four groups of line equipment on the surface of the fire alarm controller, and the various detector data on the first line equipment, the second line equipment and the third line equipment are monitored in real time through the CRT graphic display and the fire alarm controller.

[0038] The surface of the alarm linkage bus of the first line equipment is electrically connected to the short-circuit isolator, and a fire display panel, a suction smoke detector, a temperature detector, a manual alarm button, a fire hydrant button, an audible and visual alarm, an active device input module and a passive device input module are arranged in parallel on the side of the short-circuit isolator. The surface of the 24V power line of the first line equipment is equipped with an audible and visual alarm and a passive device input module in parallel. The surface of the telephone signal line identified by the first line is electrically connected with a manual alarm button, a suction smoke detector and a temperature detector. When the detected smoke concentration or temperature exceeds the set threshold and continues to exceed the alarm delay time, it is judged as the first stage of thermal runaway of the lithium battery, and the first-level alarm is activated to check whether the manual alarm button is pressed. If pressed, the first-level alarm is directly activated without waiting for the threshold and time conditions.

[0039] The alarm linkage bus on the surface of the second line equipment is electrically connected with a short-circuit isolator, and the side of the short-circuit isolator is connected in parallel with a suction smoke detector, a temperature detector, a water flow indicator input module, a signal butterfly valve input module, a pressure switch input module, a linear beam suction smoke detector input module, a speaker input / output module, a fire shutter door input / output module, a smoke exhaust vent input / output module and a non-coding sound and light input / output module. The surface of the 24V power line of the second line equipment is connected in parallel with a fire display panel, a speaker input / output module, a fire shutter door input / output module, a smoke exhaust vent input / output module and a non-coding sound and light input / output module. The surface of the fire broadcast line of the second line equipment is electrically connected with a speaker input / output module. The surface of the CAN bus of the second line equipment is electrically connected with a fire display panel. For various detectors on the second line equipment such as water flow indicators and signal butterfly valves, although they mainly monitor the status of the fire extinguishing system, they may also provide indirect information such as changes in fire pipe pressure in the early stage of thermal runaway. This information can be used as an auxiliary basis for judgment.

[0040] The third line equipment includes two groups of direct start control lines, and the surfaces of the two groups of direct start control lines are respectively connected with a fire pump switching module and a sprinkler pump switching module, and there are multiple groups of fire pump switching modules and sprinkler pump switching modules. The CAN networking bus surface of the third line equipment is connected with a gas fire extinguishing controller. The fourth line equipment includes four groups of lines connected to the surface of the gas fire extinguishing controller, and the surface of the gas fire extinguishing controller is respectively connected with a solenoid valve and a pressure switch. An emergency stop button, a gas release alarm and an audible and visual alarm are connected in series on one side of the gas fire extinguishing controller, and a manual alarm button, a temperature detector and an inhalation smoke detector are connected in parallel on the other side of the gas fire extinguishing controller. After the first-level alarm, the lithium battery status continues to be monitored. If the fire expands or reaches a higher risk level, the corresponding higher-level alarm and emergency measures are activated. For the gas fire extinguishing controller, when receiving the alarm signal from the CRT graphic display or the fire alarm controller, the gas fire extinguishing system is started according to the preset fire extinguishing strategy, and information is exchanged and coordinated with other controllers through the CAN networking bus, and four groups of line equipment are connected to the surface of the fire alarm controller to perform internal and external simultaneous fire risk early warning monitoring of the lithium battery. By real-time monitoring of key parameters of the lithium battery such as temperature, pressure, electrolyte gas release, etc., combined with the detection algorithm, an early warning can be issued in the first stage of thermal runaway of the lithium battery. This early warning mechanism enables relevant personnel to take timely intervention measures, such as disconnecting the power supply, starting isolation measures, etc., thereby effectively blocking the development of thermal runaway and reducing the probability of fire. The lithium battery fire risk monitoring device is mainly composed of the following key components:

[0041] CRT graphic display: used to display the status information and alarms of the fire monitoring system in real time. The display content includes the current status of the battery, monitoring data, alarm information, etc.

[0042] Fire alarm controller: The core component is responsible for processing monitoring data, generating alarm signals and controlling corresponding linkage devices. The controller further integrates an embedded AI processing module and a touch display.

[0043] The first to fourth line devices: Each line device is responsible for transmitting different types of signals, such as alarm linkage bus, 24V power line, telephone signal line, fire broadcast line, CAN bus, etc. There is an electrical connection between different line devices, and some line devices are also connected to other line devices on the surface, thus forming a complete signal transmission network.

[0044] Embedded AI processing module: This module is embedded in the fire alarm controller and is capable of machine learning and model training based on real-time data to identify specific abnormal patterns and trends. It can dynamically adjust the sensitivity of the detector and automatically update the alarm threshold when new abnormal patterns are discovered.

[0045] Wireless communication module and cloud server: The fire alarm controller communicates with the cloud server through the wireless communication module. As a multi-dimensional data analysis platform, the cloud server stores and processes monitoring data from multiple devices, establishes risk models for different types of lithium batteries, and provides real-time status assessment and fault prediction.

[0046] Touch screen display: Users can view the status and historical data of lithium batteries in real time through the touch screen display, and can adjust parameters, view logs and generate reports directly on the device.

[0047] Remote diagnostic function: This function allows technicians to monitor, diagnose and maintain the equipment in real time through the remote access interface, and trigger emergency response measures when necessary, such as shutting down the power or starting the backup system.

[0048] 2. Algorithm logic and mathematical formulas

[0049] The algorithm logic of the embedded AI processing module is divided into several steps: data collection, feature extraction, model training, anomaly detection, dynamic threshold adjustment, and risk assessment:

[0050] Data collection and preprocessing

[0051] Through the sensor network (such as gas detectors, smoke detectors, etc.), the gas concentration (such as hydrogen, carbon monoxide) and smoke particle data in the environment are collected.

[0052] The preprocessing steps include denoising and normalization, and the processing formula is as follows:

[0053]

[0054] x norm is the normalized data, x is the original data, and x min and x max are the minimum and maximum values ​​of the data set, respectively.

[0055] Calculate the characteristic values ​​of the collected multidimensional data, such as mean, variance, skewness, kurtosis, etc., to describe the distribution of the data. -Feature extraction formula:

[0056]

[0057] μ is the mean, σ 2 is the variance, x i is the ith data point.

[0058] Based on historical data and real-time data, the model is trained through machine learning algorithms (such as support vector machines, random forests, etc.) to identify abnormal patterns. - Anomaly detection uses the decision boundary formula: DecisionBoundary:

[0059] w T x+b=0

[0060] Among them, w is the weight vector, x is the feature vector, and b is the bias.

[0061] Dynamically adjust the detector sensitivity and alarm threshold based on historical data and real-time data. Adjustment formula:

[0062] New Threshold=Old Threshold+α×Error.

[0063] Among them, α is the learning rate, and Error is the error between the predicted value and the actual value.

[0064] Evaluate the status of lithium batteries and determine whether there is a fire risk formula:

[0065]

[0066] w i is the weight, f i (x) is the eigenvalue. Specific embodiment 2:

[0068] like Figure 1 As shown, according to the content of the specific embodiment 1, the following contents are further disclosed:

[0069] When the devices connected on the surface of the fire alarm controller are actually used, in order to facilitate the accurate detection of the first stage of the lithium battery, the active device input module and the passive device input module connected on the surface of the first line equipment, the water flow indicator input module, the signal butterfly valve input module, the pressure switch input module, the linear beam suction smoke detector input module, the speaker input / output module, the fire shutter door input / output module, the smoke exhaust vent input / output module and the non-coding sound and light input / output module connected on the surface of the second line equipment are installed inside the lithium battery casing to realize contact detection of the lithium battery surface and improve accuracy. Specific embodiment three:

[0071] like Figure 1 As shown, according to the content of the specific embodiment 1, the following contents are further disclosed:

[0072] A lithium battery fire risk monitoring device and its detection algorithm, the detection algorithm of the fire alarm controller is as follows:

[0073] Sp1: Initialization stage, set the initial state of the detector to "normal monitoring", load the detector sensitivity settings, which may need to be adjusted according to the lithium battery type and the type of gas and smoke expected to be monitored, and initialize the detection cycle, that is, how often the detector detects the surrounding environment;

[0074] Sp2: Environmental data collection. In each detection cycle, an inhalation smoke detector is used to detect the gas concentration and smoke particles in the environment around the lithium battery, and the detected data is recorded, including but not limited to the concentration of specific gases such as hydrogen and carbon monoxide;

[0075] Sp3: Data processing and anomaly detection: Analyze the collected data to determine whether there are abnormal values ​​or trends, and use the preset threshold to determine whether the gas concentration exceeds the normal range. If an abnormality is detected, proceed to the next step of judgment;

[0076] Sp4: Lithium battery status assessment: Based on the detected gas concentration and smoke particles, combined with the known characteristics and failure modes of lithium batteries, a preliminary assessment of the current status of the lithium battery is conducted. The assessment results include: normal lithium battery, potential abnormality, or immediate warning;

[0077] Sp5: Early warning and response. If the evaluation results show that the lithium battery has a potential abnormality or serious failure risk, the early warning mechanism is triggered, and an early warning signal is issued through an audible and visual alarm, a CRT graphic display or a remote monitoring system. If the system is connected to a lithium battery management system or other related equipment, the early warning information is sent to these systems so that further measures can be taken, such as stopping charging or discharging, or conducting more detailed diagnosis.

[0078] Sp6: Fault record and report, recording each detection result, warning record, and evaluation result of lithium battery status.

[0079] The detection algorithm is designed based on the first-stage characteristics of lithium battery thermal runaway. It can accurately determine the state of the lithium battery and avoid safety risks caused by false alarms or missed alarms. Specific embodiment four:

[0081] like Figure 1 As shown, according to the content of the specific embodiment three, the following contents are further disclosed:

[0082] In the early stage of thermal runaway, the temperature of lithium batteries begins to rise, but at this time the battery's own protection mechanism, such as the pressure relief valve, will be activated to release the gas in the electrolyte to reduce the internal pressure of the battery. This stage is a critical period to prevent the development of thermal runaway. The above algorithm steps are used for detection and early warning, and the following technical contents are further disclosed:

[0083] Key parameters to monitor:

[0084] Temperature: Use temperature sensors to monitor the temperature changes of lithium batteries in real time. Once the temperature exceeds the set threshold, such as 50°C, 70°C, 80°C, etc., the system will start to pay attention and prepare to issue an early warning;

[0085] Pressure: If the lithium battery is designed with a pressure sensor, it can monitor the changes in the internal pressure of the battery. When the pressure exceeds the safe range, an early warning is also triggered;

[0086] Electrolyte gas release: By monitoring the status of the battery's built-in pressure relief valve, it is determined whether there is electrolyte gas release, which is an important signal of early thermal runaway;

[0087] Warning threshold and delay time:

[0088] According to the characteristics of lithium batteries and experimental data, set reasonable warning thresholds and delay times. For example, you can set 50°C as the first-level warning temperature, 70°C as the second level, and 80°C as the third level. At the same time, set a certain delay time to avoid false alarms due to transient factors.

[0089] Data analysis and judgment

[0090] When the system detects that any of the above key parameters exceeds the warning threshold and lasts longer than the set delay time, the system will determine that the lithium battery may enter the first stage of thermal runaway;

[0091] Early warning output and emergency measures:

[0092] Once the warning conditions are met, the system will issue warning information through CRT graphic displays, sound and light alarms, etc., to notify relevant personnel to take intervention measures. These measures may include disconnecting the power supply, initiating isolation measures, etc. to prevent further development of thermal runaway. Specific embodiment five:

[0094] like Figure 1 As shown, according to the contents of specific embodiments one, two, three and four, the following contents are further disclosed:

[0095] The various devices connected to the surface of the fire alarm control panel expose the following:

[0096] Suction smoke detector: It has a built-in digital processing chip with high speed, low power consumption and stable performance. It provides accurate fire information for the fire alarm controller. It adopts a non-polarity two-bus connection and electronic coding with the fire alarm controller. The engineering adjustment is simple and reliable. The bottom is sealed, which can effectively prevent water, dust and damage to the detector caused by harsh application environment.

[0097] Temperature detector: It uses A / D analog-to-digital conversion processing chip, with stable and reliable performance. It is especially suitable for places with drastic temperature rise in case of fire. It can detect fire more reliably and reduce losses when used with suction smoke detector. It uses non-polarity two-bus connection and electronic coding with fire alarm controller, and the engineering adjustment is simple and reliable. It uses thermistor as the sensing element, which responds quickly. It uses microprocessor to process the analog value of temperature and can send out fire alarm signal according to the set temperature.

[0098] Manual fire alarm button: When a fire is confirmed manually, press the button on the alarm button to send an alarm signal to the controller. After receiving the alarm signal, the controller displays the location information of the alarm button and sounds an alarm. Insert the fire telephone extension into the telephone jack to communicate with the telephone host. It integrates a digital processing chip, has a fast calculation speed, a low failure rate, is simple and convenient to install, comes with a telephone jack, electronic coding, and simple and reliable engineering debugging;

[0099] Fire hydrant button: The fire hydrant button is installed in the fire hydrant box. When the fire is confirmed manually, it can be directly pressed. The red start indicator light will light up and send a start signal to the fire alarm controller. The fire alarm controller will alarm and make a linkage sound to start the fire pump. After the pump is running, the fire alarm controller will light up its green answer indicator light to the fire hydrant button. It adopts a plug-in structure design, which is simple and convenient to install. It integrates a digital processing chip with fast computing speed and low failure rate. It can provide output contacts to directly control other external devices. It is electronically coded, and the engineering debugging is simple and reliable.

[0100] Input module: The input module is used to receive various passive contact switch signals of active linkage equipment, and can respond to the commands issued by the fire alarm controller more quickly. It adopts non-polarity two-bus connection and electronic coding with the controller, and the engineering adjustment is simple and reliable. It integrates digital processing chips, has fast operation speed and low failure rate. The module response terminal is connected to the passive normally open contact of the monitored equipment;

[0101] Contact input / output module: The input / output module is mainly used to control passive fire-fighting equipment such as alarms, smoke exhaust, fans, fire shutters, etc. When the controlled equipment needs power, a 24VDC power supply is required. It receives both controller instructions and equipment action response signals, outputs work instructions to the equipment and feeds back equipment action signals to the controller. The output contact of the module output end controls the passive linkage equipment. The module receives the response signal provided by the controlled equipment after the action, and feeds back to the controller through the two buses to display the action status of the linkage equipment. It adopts a non-polar two-bus connection and electronic coding with the controller, and the engineering adjustment is simple and reliable; the integrated digital processing chip has fast computing speed and low failure rate, and the output point is a passive contact signal;

[0102] Voltage-type input / output module: The input / output module is mainly used to control passive fire-fighting equipment such as smoke exhaust vents, fans, fireproof rolling shutter doors, etc. It receives both controller instructions and equipment action response signals, outputs work instructions to the equipment and feeds back equipment action signals to the controller. The module outputs 24V voltage to control passive linkage equipment; the module receives the passive contact switch response signal provided by the controlled equipment after the action, and feeds back to the controller through the two-bus to display the action status of the linkage equipment. It adopts a non-polar two-bus connection and electronic coding with the controller. The engineering adjustment is simple and reliable, and the integrated digital processing chip has fast computing speed and low failure rate. The output point is 24VDC active output, with multiple output modes, pulse voltage output, and constant power supply output;

[0103] Sound and light alarm: It has a built-in digital processing chip, which can respond to the commands issued by the fire alarm controller more quickly. It has low power consumption, long life, and loud and clear fire alarm sound, which can remind on-site personnel at a long distance. It has multiple ultra-bright LEDs as light sources, small size, and can be used in various areas. It is powered by two bus loops, no external power supply is required, and it is electronically coded. The device can be directly connected to the loop without the need for a matching module.

[0104] Short-circuit isolator: Short-circuit isolator is mainly used in automatic fire alarm control systems. The product has novel structure, beautiful appearance, stable performance, strong moisture resistance, and can effectively isolate the short-circuit parts from the non-short-circuit parts in the circuit to protect the normal operation of the non-short-circuit area;

[0105] Fire display panel: a monitoring device used to display the location and coded address of the alarm device, and to send out sound and light alarm signals at the same time. The fire display panel has a compact structure and low power consumption, which can increase the number of units carried by the circuit. It has a compact structure and is easy to install. It has a built-in advanced 32-bit digital processing chip with powerful performance. It adopts a two-wire connection method, does not require a 24V power line, and has flexible functions. Each circuit can carry 40 units.

[0106] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprising a reference structure" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0107] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery fire risk monitoring device, comprising a CRT graphic display and a fire alarm controller, characterized in that: The CRT graphic display is electrically connected to the fire alarm controller, and adjacent fire alarm controllers are electrically connected. The surface of the fire alarm controller is connected with a first line device, a second line device, and a third line device. The surface of the third line device is connected with a fourth line device. The first line device includes an alarm linkage bus, a 24V power line, and a telephone signal line. The second line device includes an alarm linkage bus, a 24V power line, a fire broadcast line, and a CAN bus. The third line device includes a direct start control line and a CAN networking bus. The surface of the CAN networking bus is connected with a fourth line device. The fire alarm controller further includes an embedded AI processing module. The embedded AI processing module can perform machine learning and model training based on real-time data to identify specific abnormal patterns and trends. The module can dynamically adjust the sensitivity of the detector according to historical data and real-time collected data, and automatically update the alarm threshold when a new abnormal pattern is found; The fire alarm controller communicates with the cloud server through a wireless communication module. The cloud server can store, analyze and process the monitoring data of multiple devices to form a multi-dimensional data analysis platform, which can establish specific risk models for different types of lithium batteries and provide real-time status assessment and fault prediction; the fire alarm controller is provided with a touch display screen on the surface, through which the user can view the status and historical data of the lithium battery in real time, and can directly adjust parameters, view logs and generate reports on the device; the fire alarm controller integrates a remote diagnosis function, allowing technicians to monitor, diagnose and maintain the equipment in real time through a remote access interface, and trigger emergency response measures when necessary, such as shutting down the power or starting the backup system.

2. A lithium battery fire risk monitoring device according to claim 1, characterized in that: The surface of the alarm linkage bus of the first line equipment is electrically connected to the short-circuit isolator, and the side of the short-circuit isolator is provided with a fire display panel, a suction smoke detector, a temperature detector, a manual alarm button, a fire hydrant button, an audible and visual alarm, an active device input module and a passive device input module in parallel.

3. A lithium battery fire risk monitoring device according to claim 1, characterized in that: An audible and visual alarm and a passive device input module are connected in parallel on the surface of the 24V power line of the first line device, and a manual alarm button is electrically connected on the surface of the telephone signal line identified by the first line.

4. A lithium battery fire risk monitoring device according to claim 1, characterized in that: The alarm linkage bus on the surface of the second line equipment is electrically connected with a short-circuit isolator, and the side of the short-circuit isolator is connected in parallel with a suction smoke detector, a temperature detector, a water flow indicator input module, a signal butterfly valve input module, a pressure switch input module, a linear beam suction smoke detector input module, a speaker input / output module, a fire shutter door input / output module, a smoke exhaust vent input / output module and a non-coding sound and light input / output module.

5. A lithium battery fire risk monitoring device according to claim 1, characterized in that: A fire display panel, a speaker input / output module, a fire shutter door input / output module, a smoke exhaust vent input / output module and a non-coding sound and light input / output module are connected in parallel on the surface of the 24V power line of the second line device.

6. A lithium battery fire risk monitoring device according to claim 1, characterized in that: A speaker input / output module is electrically connected to the surface of the fire broadcast line of the second line device, and a fire display panel is electrically connected to the surface of the CAN bus of the second line device.

7. A lithium battery fire risk monitoring device according to claim 1, characterized in that: The third line equipment includes two groups of direct start control lines, and the surfaces of the two groups of direct start control lines are respectively connected to a fire pump switching module and a sprinkler pump switching module, and there are multiple groups of fire pump switching modules and sprinkler pump switching modules.

8. A lithium battery fire risk monitoring device according to claim 1, characterized in that: A gas fire extinguishing controller is connected to the CAN networking bus surface of the third line device, and the fourth line device includes four groups of lines connected to the surface of the gas fire extinguishing controller, and the surface of the gas fire extinguishing controller is respectively connected to a solenoid valve and a pressure switch, an emergency stop button, a gas release alarm and an audible and visual alarm are connected in series on one side of the gas fire extinguishing controller, and a manual alarm button, a temperature detector and an inhalation smoke detector are connected in parallel on the other side of the gas fire extinguishing controller.

9. A lithium battery fire risk monitoring device and detection algorithm according to any one of claims 1 to 8, characterized in that: The detection algorithm of the fire alarm controller is as follows: Sp1: Initialization stage, set the initial state of the detector to "normal monitoring", load the detector sensitivity settings, which may need to be adjusted according to the lithium battery type and the type of gas and smoke expected to be monitored, and initialize the detection cycle, that is, how often the detector detects the surrounding environment; Sp2: Environmental data collection. In each detection cycle, an inhalation smoke detector is used to detect the gas concentration and smoke particles in the environment around the lithium battery, and the detected data is recorded, including but not limited to the concentration of specific gases such as hydrogen and carbon monoxide; Sp3: Data processing and anomaly detection: Analyze the collected data to determine whether there are abnormal values ​​or trends, and use the preset threshold to determine whether the gas concentration exceeds the normal range. If an abnormality is detected, proceed to the next step of judgment; Sp4: Lithium battery status assessment: Based on the detected gas concentration and smoke particles, combined with the known characteristics and failure modes of lithium batteries, a preliminary assessment of the current status of the lithium battery is conducted. The assessment results include: normal lithium battery, potential abnormality, or immediate warning; Sp5: Early warning and response. If the evaluation results show that the lithium battery has a potential abnormality or serious failure risk, the early warning mechanism is triggered, and an early warning signal is issued through an audible and visual alarm, a CRT graphic display or a remote monitoring system. If the system is connected to a lithium battery management system or other related equipment, the early warning information is sent to these systems so that further measures can be taken, such as stopping charging or discharging, or conducting more detailed diagnosis. Sp6: Fault record and report, recording each detection result, warning record, and evaluation result of lithium battery status.

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