Lithium ion battery large current abnormity protection and early warning fire extinguishing system

Abstract

The invention provides a lithium ion battery large current abnormity protection and early warning fire extinguishing system. The lithium ion battery large current abnormity protection and early warning fire extinguishing system comprises an outer side box body, a control panel is fixedly connected to the left surface of the outer side box body, a manual fire fighting button is arranged on the side surface of the control panel, and an alarm lamp is arranged on the side surface of the control panel and located on the upper side of the manual fire fighting button; a display screen is arranged on the side surface of the control panel and located on the upper side of the alarm lamp, and a data cabinet is detachably connected to the upper surface of the outer box body. According to the lithium ion battery large current abnormity protection and early warning fire extinguishing system, through a multi-dimensional signal monitoring and intelligent control system, the safety of the lithium ion battery under the large current abnormity condition is remarkably improved. The accurate layout of the temperature sensor, the stress sensor and the gas sensor enables the system to capture the temperature change, the expansion pressure and the release of harmful gas in the battery in real time.

Description

Technical Field

[0001] The present invention relates to the technical field of early warning fire extinguishing systems, and in particular to a lithium ion battery large current abnormal protection and early warning fire extinguishing system. Background Art

[0002] A lithium-ion battery high current abnormal protection and early warning fire extinguishing system, mainly composed of a multi-dimensional signal monitoring unit, a data cabinet, a fire extinguishing device, etc. The system monitors the battery's temperature, expansion pressure, gas concentration and other parameters in real time through temperature sensors, stress sensors and gas sensors installed inside and outside the lithium battery. When these parameters exceed the set safety threshold, the system will trigger an alarm and start the fire extinguishing device. The fire extinguishing system usually adopts a full flooding fire extinguishing design, which can quickly cover the entire battery cabinet when a fire occurs, and use chemical fire extinguishing agents or fine water mist for fire extinguishing. At the same time, the signal cabinet will upload the detected data to the centralized data center for monitoring in the control room. In addition, the system is also equipped with a manual fire button and an audible and visual alarm device to ensure that on-site operators can respond to emergencies in a timely manner.

[0003] Although the system has multi-dimensional monitoring and fire extinguishing functions, there are still some limitations. The system's response speed is limited by the efficiency of sensors and data processing. It may be difficult to respond in real time when the chemical reaction inside the battery has rapidly escalated, resulting in a delay in the initiation of fire extinguishing measures. Although the fire extinguishing method takes into account all-round coverage, due to the chemical reaction characteristics inside the lithium-ion battery, conventional fire extinguishing agents may not be able to completely suppress the spread of the fire. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a lithium-ion battery high current abnormal protection and early warning fire extinguishing system, which solves the problem that it is difficult to respond in real time when the chemical reaction inside the battery has rapidly escalated, resulting in a delay in the initiation of fire extinguishing measures; and the problem that due to the chemical reaction characteristics inside the lithium-ion battery, conventional fire extinguishing agents may not be able to completely suppress the spread of fire.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a lithium-ion battery high current abnormal protection and early warning fire extinguishing system, comprising:

[0008] An outer box, a control panel is fixedly connected to the left surface of the outer box, a manual fire button is arranged on the side surface of the control panel, an alarm light is arranged on the side surface of the control panel and located above the manual fire button, a display screen is arranged on the side surface of the control panel and located above the alarm light, and a data cabinet is detachably connected to the upper surface of the outer box;

[0009] A lithium-ion soft-pack battery is fixedly connected to the inner wall of the bottom of the outer box, a fire extinguisher is fixedly connected to the side surface of the lithium-ion soft-pack battery, a gas sensor is arranged on the outside of the fire extinguisher, a stress sensor is arranged on the upper surface of the lithium-ion soft-pack battery, a temperature sensor is arranged on the upper surface of the lithium-ion soft-pack battery, and a voltage sensor is fixedly connected to the side surface of the lithium-ion soft-pack battery.

[0010] Preferably, a pressure relief window is provided on the front surface of the outer box body, and flame-retardant cotton is provided on the side surface of the lithium-ion soft-pack battery.

[0011] Preferably, the temperature sensor is arranged in a region close to a battery tab of the lithium-ion soft-pack battery, and the stress sensor is installed at a center point of the lithium-ion soft-pack battery.

[0012] Preferably, the gas sensors include H2, CO, CO2, HF, HCL and SO2 sensors, and preferentially detect H2, CO and CO2.

[0013] Preferably, the fire extinguishing system includes perfluorohexanone fire extinguishing agent or fine water mist fire extinguishing system, and is used in conjunction with a fire extinguishing agent storage tank, a pressure stabilizing system and a nozzle. The installation of the nozzle should meet the requirements of fog cone intersection to ensure full flooding fire extinguishing in the lithium-ion soft-pack battery cabinet.

[0014] Preferably, the data cabinet is used to store and manage the temperature data, voltage data, expansion force data and gas data of the lithium-ion soft-pack battery, and upload them to the centralized data center through the communication module for remote monitoring.

[0015] Preferably, the data cabinet is used to store and manage the temperature data, voltage data, expansion force data and gas data of the lithium-ion soft-pack battery, and upload them to the centralized data center through the communication module for remote monitoring.

[0016] Preferably, the display screen is used to display real-time status information of the lithium-ion soft-pack battery, including temperature, voltage, gas concentration and expansion pressure data. The alarm light will issue a visual alarm when an abnormality is detected to attract the attention of the operator. The manual fire button can be manually activated by the operator in an emergency to activate the fire extinguishing device and immediately start the fire extinguishing procedure. The perfluorohexanone fire extinguishing agent is an environmentally friendly fire extinguishing agent that can reduce damage to the battery and the environment while extinguishing the fire.

[0017] (III) Beneficial effects

[0018] The present invention provides a lithium-ion battery high current abnormal protection and early warning fire extinguishing system. It has the following beneficial effects:

[0019] This lithium-ion battery high current abnormal protection and early warning fire extinguishing system significantly improves the safety of lithium-ion batteries in high current abnormal conditions through multi-dimensional signal monitoring and intelligent control systems. The precise layout of temperature sensors, stress sensors and gas sensors enables the system to capture temperature changes, expansion pressure and release of harmful gases inside the battery in real time, ensuring a rapid response to abnormal conditions. The application of perfluorohexanone fire extinguishing agent or fine water mist fire extinguishing system, combined with the full flooding arrangement of nozzles, makes the fire extinguishing operation more efficient, and can promptly suppress the spread of fire when the chemical reaction inside the battery is rapidly escalating, reducing the safety hazards caused by thermal runaway of the battery.

[0020] The system also has reliable real-time monitoring and early warning functions. It uploads the key data of the battery to the centralized data center through the data cabinet, and triggers the alarm light and manual fire button in abnormal situations, ensuring the operator's ability to intervene in time. The system not only takes into account efficient fire extinguishing, but also takes into account environmental protection. The use of perfluorohexanone fire extinguishing agent reduces damage to batteries and the environment. These advantages make the present invention have significant advantages in the safety protection of lithium-ion batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the internal structure of the present invention;

[0022] Figure 2 It is a partial structural schematic diagram of the present invention;

[0023] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 4 For the present invention Figure 2 A schematic diagram of the enlarged structure in the middle.

[0025] Among them, 1. Data cabinet; 2. Pressure relief window; 3. Gas sensor; 4. Fire extinguishing; 5. Temperature sensor; 6. Voltage sensor; 7. Stress sensor; 8. Lithium-ion soft-pack battery; 9. Flame-retardant cotton; 10. Manual fire button; 11. Alarm light. DETAILED DESCRIPTION

[0026] 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.

[0027] Embodiment 1

[0028] like Figure 1-4As shown, an embodiment of the present invention provides a lithium-ion battery large current abnormal protection and early warning fire extinguishing system, including an outer box body, a control panel is fixedly connected to the left surface of the outer box body, a manual fire button 10 is arranged on the side surface of the control panel, an alarm light 11 is arranged on the side surface of the control panel and located above the manual fire button 10, a display screen is arranged on the side surface of the control panel and located above the alarm light 11, and a data cabinet 1 is detachably connected to the upper surface of the outer box body: the data cabinet 1 is used to store and manage the temperature data, voltage data, expansion force data and gas data of the lithium-ion soft-pack battery 8, and upload it to the centralized data center through the communication module for remote monitoring. The data cabinet 1 is used to store and manage the lithium-ion soft-pack battery 8. The temperature data, voltage data, expansion force data and gas data of the lithium-ion soft-pack battery 8 are collected and uploaded to the centralized data center through the communication module for remote monitoring. A pressure relief window 2 is provided on the front surface of the outer box body. Flame-retardant cotton 9 is provided on the side surface of the lithium-ion soft-pack battery 8. The display screen is used to display the real-time status information of the lithium-ion soft-pack battery 8, including temperature, voltage, gas concentration and expansion pressure data. The alarm light 11 will issue a visual alarm when an abnormality is detected to attract the attention of the operator. The manual fire button 10 can be manually activated by the operator in an emergency to start the fire extinguishing device 4 and immediately start the fire extinguishing procedure. Perfluorohexanone fire extinguishing agent is an environmentally friendly fire extinguishing agent that can reduce damage to the battery and the environment while extinguishing a fire.

[0029] A lithium-ion soft-pack battery 8 is fixedly connected to the inner wall of the bottom of the outer box, and a fire extinguisher 4 is fixedly connected to the side surface of the lithium-ion soft-pack battery 8. The fire extinguisher 4 includes a perfluorohexanone fire extinguishing agent or a fine water mist fire extinguishing system, and is used in conjunction with a fire extinguishing agent storage tank, a voltage stabilizing system and a nozzle. The nozzle installation should meet the requirements of fog cone intersection to ensure that the lithium-ion soft-pack battery cabinet 8 is fully flooded with fire extinguishing treatment. A gas sensor 3 is arranged on the outside of the fire extinguisher 4. The gas sensor 3 includes H2, CO, CO2, HF, HCL and SO2 sensors, and H2, CO and CO2 are preferentially detected. A stress sensor 7 is arranged on the upper surface of the lithium-ion soft-pack battery 8. A temperature sensor 5 is arranged on the upper surface of the lithium-ion soft-pack battery 8. The temperature sensor 5 is arranged in the area close to the battery pole ear of the lithium-ion soft-pack battery 8. The stress sensor 7 is installed at the center point of the lithium-ion soft-pack battery 8. A voltage sensor 6 is fixedly connected to the side surface of the lithium-ion soft-pack battery 8.

[0030] Example 2: Basic structure and function

[0031] like Figure 1-4As shown, an embodiment of the present invention provides a lithium-ion battery large current abnormal protection and early warning fire extinguishing system, the system includes an outer box body, a control panel is fixedly connected to the left surface of the outer box body, a manual fire button 10 is provided on the side surface of the control panel, which is used to manually trigger the fire extinguishing system 4 in an emergency, and an alarm light 11 is arranged above the manual fire button 10. When a battery abnormality is detected, the alarm light 11 will issue a visual alarm to prompt the operator to pay attention. The display screen above the alarm light 11 is used to display the real-time status information of the lithium-ion soft-pack battery 8, including temperature, voltage, gas concentration and expansion pressure data, so that the operator can grasp the operating status of the battery in time. The upper surface of the outer box body is detachably connected to a data cabinet 1, and the data cabinet 1 is used to store and manage the temperature data, voltage data, expansion force data and gas data of the lithium-ion soft-pack battery 8, and upload them to the centralized data center through the communication module for remote monitoring and management.

[0032] Example 3: Fire extinguishing system and signal acquisition

[0033] A pressure relief window 2 is provided on the front surface of the outer box. When the internal pressure of the battery is too high, the pressure relief window 2 can release the pressure in time to prevent the box from rupturing and ensure the safety of the system. The lithium-ion soft-pack battery 8 is fixedly installed on the bottom inner wall of the outer box, and its side surface is covered with flame-retardant cotton 9 to further improve the fire resistance of the system. The side surface of the lithium-ion soft-pack battery 8 is fixedly connected with a fire-fighting 4 device, which includes a perfluorohexanone fire extinguishing agent or a fine water mist fire extinguishing system. The fire extinguishing device is used in conjunction with a fire extinguishing agent storage tank, a voltage stabilizing system and a nozzle to ensure that the battery cabinet can be fully flooded and extinguished when a fire occurs, so as to minimize the spread of the fire. The installation position and angle of the nozzle are carefully designed to ensure that the sprayed fire extinguishing agent can effectively cover the entire lithium-ion soft-pack battery 8.

[0034] Example 3: Sensor Arrangement and Detection

[0035] In order to realize real-time monitoring of lithium-ion batteries, gas sensors 3 are provided on the side surface of the lithium-ion soft-pack battery 8, including H2, CO, CO2, HF, HCL and SO2 sensors, among which H2, CO and CO2 are detected preferentially so as to timely detect battery abnormalities. Stress sensors 7 and temperature sensors 5 are provided on the upper surface of the lithium-ion soft-pack battery 8, wherein the temperature sensor 5 is installed in the area close to the battery ear, and can accurately monitor the temperature change of the battery and timely feedback the thermal condition of the battery; the stress sensor 7 is installed at the center point of the battery to detect the battery expansion pressure and help judge the physical stress condition inside the battery; the voltage sensor 6 is installed on the side surface of the lithium-ion soft-pack battery 8 to monitor the voltage change of the battery in real time, so as to ensure that in the case of abnormal current, it can quickly detect and issue an alarm and start corresponding protection measures.

[0036] Working principle: The lithium-ion battery high current abnormal protection and early warning fire extinguishing system of the present invention realizes real-time protection of lithium-ion batteries under abnormal high current conditions through multi-dimensional monitoring and intelligent control. The system installs multiple sensors at key parts of the lithium-ion battery, including temperature sensor 5, stress sensor 7, voltage sensor 6 and gas sensor 3, to monitor the battery temperature, expansion pressure, voltage change and harmful gas concentration in real time. When the monitored parameters exceed the set safety threshold, the system will immediately trigger an alarm, warn the operator through the alarm light 11 and the display screen, and prepare to start the fire extinguishing procedure. If the abnormality persists or intensifies, the system will automatically trigger the fire extinguishing device 4, use perfluorohexanone fire extinguishing agent or fine water mist system to extinguish the lithium-ion soft-pack battery 8 in all directions, and release the excessive internal pressure through the pressure relief window 2 to prevent the box from rupture and explosion accidents. During the whole process, the flame retardant cotton 9 provides additional fire-resistant protection to ensure that the flame does not spread. After the fire is extinguished, the system continues to monitor the battery status to prevent secondary fires, and uploads all data to the data cabinet 1 for remote monitoring and subsequent maintenance.

[0037] 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-ion battery high current abnormal protection and early warning fire extinguishing system, characterized in that: include: An outer box, a control panel is fixedly connected to the left surface of the outer box, a manual fire button (10) is arranged on the side surface of the control panel, an alarm light (11) is arranged on the side surface of the control panel and located above the manual fire button (10), a display screen is arranged on the side surface of the control panel and located above the alarm light (11), and a data cabinet (1) is detachably connected to the upper surface of the outer box; A lithium-ion soft-pack battery (8) is fixedly connected to the inner wall of the bottom of the outer box, a fire extinguisher (4) is fixedly connected to the side surface of the lithium-ion soft-pack battery (8), a gas sensor (3) is arranged on the outside of the fire extinguisher (4), a stress sensor (7) is arranged on the upper surface of the lithium-ion soft-pack battery (8), a temperature sensor (5) is arranged on the upper surface of the lithium-ion soft-pack battery (8), and a voltage sensor (6) is fixedly connected to the side surface of the lithium-ion soft-pack battery (8).

2. A lithium-ion battery high current abnormal protection and early warning fire extinguishing system according to claim 1, characterized in that: The front surface of the outer box is provided with a pressure relief window (2), and the side surface of the lithium-ion soft-pack battery (8) is provided with flame-retardant cotton (9).

3. A lithium-ion battery high current abnormal protection and early warning fire extinguishing system according to claim 1, characterized in that: The temperature sensor (5) is arranged in an area close to the battery tab of the lithium-ion soft-pack battery (8), and the stress sensor (7) is installed at the center point of the lithium-ion soft-pack battery (8).

4. A lithium-ion battery high current abnormal protection and early warning fire extinguishing system according to claim 1, characterized in that: The gas sensor (3) includes H2, CO, CO2, HF, HCL and SO2 sensors, and preferentially detects H2, CO and CO2.

5. A lithium-ion battery high current abnormal protection and early warning fire extinguishing system according to claim 1, characterized in that: The fire extinguishing device (4) includes a perfluorohexanone fire extinguishing agent or a fine water mist fire extinguishing system, and is used in conjunction with a fire extinguishing agent storage tank, a pressure stabilizing system and a nozzle. The nozzle installation should meet the requirements of fog cone intersection to ensure full flooding fire extinguishing treatment in the lithium ion soft pack battery cabinet (8).

6. A lithium-ion battery high current abnormal protection and early warning fire extinguishing system according to claim 1, characterized in that: The data cabinet (1) is used to store and manage the temperature data, voltage data, expansion force data and gas data of the lithium-ion soft-pack battery (8), and upload the data to a centralized data center through a communication module for remote monitoring.

7. A lithium-ion battery high current abnormal protection and early warning fire extinguishing system according to claim 1, characterized in that: The data cabinet (1) is used to store and manage the temperature data, voltage data, expansion force data and gas data of the lithium-ion soft-pack battery (8), and upload the data to a centralized data center through a communication module for remote monitoring.

8. A lithium-ion battery high current abnormal protection and early warning fire extinguishing system according to claim 1, characterized in that: The display screen is used to display real-time status information of the lithium-ion soft-pack battery (8), including temperature, voltage, gas concentration and expansion pressure data. The alarm light (11) will issue a visual alarm when an abnormality is detected to attract the attention of the operator. The manual fire button (10) can be used by the operator to manually activate the fire extinguishing device in an emergency to immediately start the fire extinguishing procedure. The perfluorohexanone fire extinguishing agent is an environmentally friendly fire extinguishing agent that can reduce damage to the battery and the environment while extinguishing the fire.

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