Fire early warning and emergency processing system for lithium battery of electric bicycle

Abstract

The invention discloses an electric bicycle lithium battery fire early warning and emergency processing system which comprises a battery box body and a lithium battery. The real-time monitoring module is used for monitoring data such as voltage, current, temperature, heat radiation and toxic gas concentration of the lithium battery in the battery box body; the lithium battery thermal management system is electrically connected with the real-time monitoring module and is used for analyzing data acquired by the real-time monitoring module in real time; the emergency response module is electrically connected with the lithium battery thermal management system and outputs an emergency response strategy according to an analysis result; according to the invention, dangerous cases such as thermal runaway in the charging process can be found in time, and early warning is automatically carried out.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery management for electric bicycles, and particularly to a lithium battery fire warning and emergency handling system for electric bicycles. Background Art

[0002] With the improvement of environmental awareness and the change of urban traffic demands, electric bicycles have rapidly become an important means of transportation for the general public due to their convenience, economy, and environmental friendliness. However, the popularization of electric bicycles has also brought new safety hazards, especially fire accidents caused by lithium batteries.

[0003] Analysis by the National Quality Inspection Center for Light Electric Vehicles and Battery Products shows that the main characteristics of electric bicycle-related safety accidents are the increase in fire accidents, the key behaviors of accidents caused by vehicle modification, and that batteries and chargers are important sources of accidents. Therefore, the Fire and Rescue Bureau of the Emergency Management Department has strengthened the governance of electric bicycle fire safety and issued regulations such as the "Regulations on the Fire Safety Management of High-Rise Civil Buildings" to strengthen the fire law enforcement. Internationally, the safety research of electric bicycles has also received attention, especially in battery technology and charging safety. The research on intelligent detection of charging and swapping systems can detect and judge the battery quality, match the optimal safe charging strategy, timely detect risks such as thermal runaway during the charging process, and automatically give early warnings and fire-fighting treatments. Summary of the Invention

[0004] To solve the deficiencies in the prior art, this application proposes a lithium battery fire warning and emergency handling system for electric bicycles, which can timely detect risks such as thermal runaway during the charging process and automatically give early warnings and fire-fighting treatments.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A lithium battery fire warning and emergency handling system for electric bicycles, comprising:

[0007] A battery box body and a lithium battery inside the battery box; and

[0008] A real-time monitoring module, including a voltage sensor, a current sensor, a first temperature sensor, a thermal radiation sensor, a toxic gas concentration sensor, a second temperature sensor, and a pressure sensor; and

[0009] A lithium battery thermal management system electrically connected to the real-time monitoring module, including a cloud data center, a data acquisition module, and an alarm algorithm comprehensive analysis module connected in sequence;

[0010] An emergency response module electrically connected to the lithium battery thermal management system,

[0011] An audible and visual alarm signal-connected to the emergency response module.

[0012] Furthermore, a sensor mounting circuit board is installed inside the battery box, and a voltage sensor, a current sensor, a first temperature sensor, a thermal radiation sensor, a toxic gas concentration sensor, and an Internet of Things signal transceiver are installed on the sensor mounting circuit board.

[0013] Furthermore, the second temperature sensor and the pressure sensor on the real-time monitoring module are arranged in the lithium battery.

[0014] Furthermore, the emergency response module includes an audible and visual alarm signal sending module and a warning information sending module; the audible and visual alarm signal sending module is connected to an audible and visual alarm; the warning information sending module sends emergency prompt information and a fire alarm.

[0015] Furthermore, the lithium battery thermal management system is installed on the user's mobile phone or PC to monitor the parameters obtained by each sensor in the real-time monitoring module.

[0016] Furthermore, the lithium battery thermal management system includes a cloud data center, a data acquisition module, and an alarm algorithm comprehensive analysis module that are connected in sequence.

[0017] Furthermore, an adaptive learning algorithm and a transfer learning algorithm are built into the alarm algorithm comprehensive analysis module.

[0018] Furthermore, the sensor mounting circuit board is equipped with a protective cover, and the protective cover is made of a fireproof material; and through holes are opened at the positions corresponding to the sensors on the protective cover.

[0019] Furthermore, the inner wall of the battery box is coated with a protective coating.

[0020] Furthermore, a thermal management protective layer is arranged between adjacent lithium batteries, a first phase change material layer and a second phase change material layer are respectively arranged on both sides inside the thermal management protective layer, and a ceramic fiber layer and a glass fiber layer are respectively arranged at the middle position of the thermal management protective layer.

[0021] Advantages of the present invention:

[0022] (1) The system designed by the present invention can monitor the operating state of the lithium battery of an electric bicycle in real time, specifically including key parameters such as battery temperature, current, voltage, thermal radiation, and toxic gas concentration. By using advanced sensor technology and data analysis algorithms, potential fire hazards can be discovered in a timely manner; and an audible and visual alarm is triggered through the audible and visual alarm signal sending module in the emergency response module for alarm prompts, and at the same time, emergency prompt information is sent to the user through the warning information sending module to realize the early warning and response to fire risks, so as to take measures in time before a fire occurs to prevent the spread of the fire.

[0023] (2) The system designed by the present invention also has an automatic alarm function, which can send fire alarms to relevant departments in a timely manner, so as to organize rescue and emergency treatment in a timely manner, thereby improving the safety performance of electric bicycles, reducing the occurrence of fire accidents, and providing a solid technical guarantee for the popularization and development of electric bicycles. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the battery box of the present invention;

[0025] Figure 2 It is a block diagram of the early warning processing system of the present invention;

[0026] Figure 3 It is a block diagram of the real-time monitoring module system of the present invention;

[0027] Figure 4 It is a block diagram of the lithium battery thermal management system of the present invention;

[0028] Figure 5 It is a block diagram of the emergency response module system of the present invention;

[0029] Figure 6 It is a block diagram of the sound and light alarm signal sending module of the present invention;

[0030] Figure 7 It is a block diagram of the early warning information sending module of the present invention;

[0031] Figure 8 It is a schematic partial structural diagram of the sensor installation circuit board of the present invention;

[0032] Figure 9 It is a schematic structural diagram of the thermal management protective layer of the present invention;

[0033] In the figure: 1. Battery box; 2. Sensor installation circuit board; 3. Lithium battery; 301. Thermal management protective layer; 302. First phase change material layer; 303. Ceramic fiber layer; 304. Glass fiber layer; 305. Second phase change material layer; 306. Second temperature sensor; 307. Pressure sensor; 4. Sound and light alarm; 5. Real-time monitoring module; 6. Lithium battery thermal management system; 7. Emergency response module; 8. Voltage sensor; 9. Current sensor; 10. First temperature sensor; 11. Thermal radiation sensor; 12. Toxic gas concentration sensor; 13. Cloud data center; 14. Data acquisition module; 15. Alarm algorithm comprehensive analysis module; 16. Sound and light alarm signal sending module; 17. Early warning information sending module; 18. Internet of Things signal transceiver; 19. Protective cover; 20. Through hole. DETAILED DESCRIPTION OF THE INVENTION

[0034] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] Please refer to Figures 1-9 , an embodiment provided by the present invention: an electric bicycle lithium battery fire warning and emergency handling system, the system includes:

[0036] A battery box body 1, a lithium battery 3 is installed inside the battery box body 1, and a protective coating is coated on the inner wall of the battery box body 1. The protective coating can expand when a battery fire occurs, playing an effect of isolating oxygen to extinguish the fire.

[0037] A real-time monitoring module 5, such as Figure 3 , the real-time monitoring module 5 includes a voltage sensor 8, a current sensor 9, a first temperature sensor 10, a thermal radiation sensor 11, a toxic gas concentration sensor 12, a second temperature sensor 306 and a pressure sensor 307. The voltage sensor 8, the current sensor 9, the first temperature sensor 10, the thermal radiation sensor 11 and the toxic gas concentration sensor 12 are all installed on a sensor installation circuit board 2.

[0038] The real-time monitoring module 5 is electrically connected to a lithium battery thermal management system 6 through the Internet of Things. The lithium battery thermal management system 6 includes a cloud data center 13, a data acquisition module 14 and an alarm algorithm comprehensive analysis module 15. The output end of the cloud data center 13 is electrically connected to the input end of the data acquisition module 14, and the output end of the data acquisition module 14 is electrically connected to the input end of the alarm algorithm comprehensive analysis module 15. The alarm algorithm comprehensive analysis module 15 includes an adaptive learning algorithm and a transfer learning algorithm. Specifically, the output ends of the voltage sensor 8, the current sensor 9, the first temperature sensor 10, the thermal radiation sensor 11 and the toxic gas concentration sensor 12 are all electrically connected to the input end of the cloud data center 13. Screening these characteristic parameters such as voltage, current, temperature, thermal radiation and toxic gas concentration is because these characteristic data have characteristic parameters with high selection accuracy, fast response time and strong continuity, which are the key parameters for fire recognition in the lithium battery thermal management system 6.

[0039] More specifically, the process of analyzing by using the adaptive learning algorithm and the transfer learning algorithm in the present invention is prior art and can be implemented with reference to the relevant solutions disclosed in the prior patents, such as CN118940228A.

[0040] The output end of the lithium battery thermal management system 6 is electrically connected to the input end of the emergency response module 7; the emergency response module 7 includes an audible and visual alarm signal sending module 16 and a warning information sending module 17. The output end of the audible and visual alarm signal sending module 16 is electrically connected to the input end of the audible and visual alarm (4) through the Internet of Things. The warning information sending module 17 includes sending emergency prompt information and fire alarms.

[0041] More specifically, as Figure 9 shown, a thermal management protection layer 301 is provided between adjacent lithium batteries 3. On both sides inside the thermal management protection layer 301, a first phase change material layer 302 and a second phase change material layer 305 are respectively provided. At the middle position of the thermal management protection layer 301, a ceramic fiber layer 303 and a glass fiber layer 304 are respectively provided. The second temperature sensor 306 and the pressure sensor 307 are uniformly installed between the first phase change material layer 302 and the ceramic fiber layer 303 and between the second phase change material layer 305 and the glass fiber layer 304. The heat insulation protection layer composed of the first phase change material layer 302, the ceramic fiber layer 303, the glass fiber layer 304, and the second phase change material layer 305 inhibits the spread of thermal runaway.

[0042] More specifically, as Figure 8 shown, a sensor installation circuit board 2 is fixed at the top inside the battery box body 1. An audible and visual alarm 4 is connected to the sensor installation circuit board 2 through a wire; an Internet of Things signal transceiver 18 is installed on the sensor installation circuit board 2. The sensor installation circuit board 2 and the audible and visual alarm 4 are both electrically connected to the lithium battery 3 through wires. One side of the sensor installation circuit board 2 is hinged with a protective cover 19, and through holes 20 are provided on the protective cover 19 corresponding to the positions of the voltage sensor 8, the current sensor 9, the first temperature sensor 10, the thermal radiation sensor 11, and the toxic gas concentration sensor 12. The protective cover 19 is made of a fireproof material to ensure the safety of the internal circuit board.

[0043] When the embodiment of the present application is in use, first, the sensor is installed on the sensor installation circuit board 2 in the battery box 1, and the lithium battery thermal management system 6 is installed on the user's mobile phone or PC; then, through the voltage sensor 8, current sensor 9, first temperature sensor 10, thermal radiation sensor 11, toxic gas concentration sensor 12, second temperature sensor 306 and pressure sensor 307 in the real-time monitoring module 5, the operating state of the lithium battery 3 in the battery box 1 is monitored in real time, and the monitored data will be sent to the cloud data center 13 in the lithium battery thermal management system 6 through the Internet of Things; next, the data acquisition module 14 will uniformly collect and organize the monitored data received in the cloud data center 13 and send it to the alarm algorithm comprehensive analysis module 15, where the monitored data is analyzed and calculated using the adaptive learning algorithm and transfer learning algorithm, and the corresponding warning signal is output; finally, if the alarm algorithm comprehensive analysis module 15 outputs a safety signal, it will not be transmitted to the emergency response module 7. Otherwise, the output signal will be sent to the emergency response module 7 through the Internet of Things, so that the audible and visual alarm signal sending module 16 triggers the audible and visual alarm 4 for alarm prompt, the warning information sending module 17 sends an emergency prompt message to the user, and at the same time, a fire alarm can be sent to the relevant departments to facilitate timely organization of rescue and emergency handling, realizing the early warning and response to the fire risk.

[0044] The above embodiments are only used to illustrate the design idea and characteristics of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The protection scope of the present invention is not limited to the above embodiments. Therefore, all equivalent changes or modifications made according to the principles and design ideas disclosed by the present invention are within the protection scope of the present invention.

Claims

1. An electric bicycle lithium battery fire warning and emergency handling system, characterized in that, Including: A battery box body (1) and a lithium battery (3) inside the battery box body (1); And A real-time monitoring module (5), including a voltage sensor (8), a current sensor (9), a first temperature sensor (10), a thermal radiation sensor (11), a toxic gas concentration sensor (12), a second temperature sensor (306), and a pressure sensor (307); And A lithium battery thermal management system (6) electrically connected to the real-time monitoring module (5), including a cloud data center (13), a data acquisition module (14), and an alarm algorithm comprehensive analysis module (15) connected in sequence; An emergency response module (7) electrically connected to the lithium battery thermal management system (6), An audible and visual alarm (4) signal-connected to the emergency response module (7).

2. The electric bicycle lithium battery fire warning and emergency handling system according to claim 1, characterized in that, A sensor mounting circuit board (2) is installed inside the battery box body (1), and a voltage sensor (8), a current sensor (9), a first temperature sensor (10), a thermal radiation sensor (11), a toxic gas concentration sensor (12), and an Internet of Things signal transceiver 18 are installed on the sensor mounting circuit board (2).

3. An electric bicycle lithium battery fire warning and emergency handling system according to claim 1, characterized in that, The second temperature sensor (306) and the pressure sensor (307) on the real-time monitoring module (5) are arranged in the lithium battery (3).

4. An electric bicycle lithium battery fire warning and emergency handling system according to claim 1, characterized in that, The emergency response module (7) includes an audible and visual alarm signal sending module (16) and a warning information sending module (17); The audible and visual alarm signal sending module (16) is connected to the audible and visual alarm (4); The warning information sending module (17) sends emergency prompt information and fire alarms.

5. The electric bicycle lithium battery fire warning and emergency handling system according to claim 1, wherein The lithium battery thermal management system (6) is installed on the user's mobile phone or PC to monitor the parameters obtained by each sensor in the real-time monitoring module (5).

6. The electric bicycle lithium battery fire warning and emergency handling system according to claim 5, characterized in that, The lithium battery thermal management system (6) includes a cloud data center (13), a data acquisition module (14), and an alarm algorithm comprehensive analysis module (15) connected in sequence.

7. An electric bicycle lithium battery fire warning and emergency handling system according to claim 6, characterized in that, The alarm algorithm comprehensive analysis module (15) incorporates an adaptive learning algorithm and a transfer learning algorithm.

8. An electric bicycle lithium battery fire warning and emergency handling system according to claim 2, characterized in that, The sensor mounting circuit board (2) is equipped with a protective cover (19), and the protective cover (19) is made of a fireproof material; And through holes (20) are opened at the positions corresponding to the sensors on the protective cover (19).

9. The electric bicycle lithium battery fire warning and emergency handling system according to claim 1, characterized in that, The inner wall of the battery box body (1) is coated with a protective coating.

10. The electric bicycle lithium battery fire warning and emergency handling system according to claim 1, characterized in that A thermal management protective layer (301) is provided between adjacent lithium batteries (3). On both sides inside the thermal management protective layer (301), a first phase change material layer (302) and a second phase change material layer (305) are respectively provided. At the middle position of the thermal management protective layer (301), a ceramic fiber layer (303) and a glass fiber layer (304) are respectively provided.

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