CN110314304B - Power lithium battery box self-adaptation conflagration prevention and control device - Google Patents
Power lithium battery box self-adaptation conflagration prevention and control device Download PDFInfo
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- CN110314304B CN110314304B CN201910446226.7A CN201910446226A CN110314304B CN 110314304 B CN110314304 B CN 110314304B CN 201910446226 A CN201910446226 A CN 201910446226A CN 110314304 B CN110314304 B CN 110314304B
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/005—Delivery of fire-extinguishing material using nozzles
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
- A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
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Abstract
The invention provides a self-adaptive fire prevention and control device for a power lithium battery box, which comprises: the fire disaster prevention device comprises a main control module, a detection module, an alarm module, a fire disaster suppression device module, a manual control module, a pipeline assembly and a nozzle; the main control module is arranged outside the battery box and comprises a first processor unit, a wireless communication unit, a power supply control unit, a data storage unit, a first CAN communication unit and a standby sensor unit; the detection module is installed inside the battery box and comprises a second processor unit, a second CAN communication unit, a main sensor unit and a driving unit. According to the invention, early warning of fire hazard signs of the battery box and self-adaptive fire extinguishing and cooling are realized, and closure and intelligent monitoring of a fire and intelligent closed-loop monitoring and fire extinguishing after the fire occurs can be effectively implemented through the arrangement of the detection module, the pipeline assembly and the nozzle.
Description
Technical Field
The invention relates to the technical field of fire prevention and control, in particular to a self-adaptive fire prevention and control device for a power lithium battery box.
Background
With the development of new energy industry, especially the promotion of urban public transportation electromotion, more and more vehicles rely on a new energy power system of a lithium battery. However, with the continuous expansion of the market capacity of new energy automobiles, the number of fire accidents caused by the characteristics of lithium batteries also increases year by year, and the personal and property safety and the popularization and application of new energy technologies are seriously affected. The main reasons for the ignition of a lithium power battery include: firstly, the charging and discharging of the battery unit are unbalanced, so that the deterioration of the battery unit is accelerated; internal short circuit and heat; local overheating caused by low heat dissipation efficiency when the battery works; fourthly, the battery is damaged due to process defects or external force, so that the electrolyte is leaked and the like.
The fire hazard of the power lithium battery is characterized in that: firstly, a fire disaster is formed by heat diffusion caused by thermal runaway of unit battery cells; ② the electrochemical reaction is initiated by a series of electrochemical reactions, and the electrochemical reactions have higher speed; the combustion is internal combustion and external combustion, the internal battery components can be decomposed to form oxidation, and the combustion reaction can be supported without depending on external oxygen; fourthly, the characteristic of irreversible performance is achieved; under the action of certain temperature and time, the single cell can cause a series of thermal runaway, fire and even explosion to cause disastrous fire; the fire environment is a complex electric field and chemical environment.
For the reasons and the characteristics, the following points must be achieved for fire prevention and control of the lithium battery: early warning of thermal runaway and timely fire warning; quickly extinguishing fire and continuously cooling; good re-combustion resistance; environment-friendly property, including insulation and compatibility in complex electric field environment and chemical environment; the whole can be summarized by eight characters, namely 'accurate, efficient, continuous and friendly'.
At present, power lithium battery box lacks an effectual conflagration prevention and control device, can not effectively implement the monitoring to the conflagration and after the conflagration takes place, lacks the monitoring of intelligence, closed loop and puts out a fire. To solve the problem completely, an objective and effective technical means is needed to realize the early warning of the fire hazard symptoms of the battery box and the self-adaptive fire extinguishing and cooling.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides a self-adaptive fire prevention and control device for a power lithium battery box.
The invention provides a self-adaptive fire prevention and control device for a power lithium battery box, which comprises: the fire disaster prevention device comprises a main control module, a detection module, an alarm module, a fire disaster suppression device module, a manual control module, a pipeline assembly and a nozzle;
the main control module is arranged outside the battery box and comprises a first processor unit, a wireless communication unit, a power supply control unit, a data storage unit, a first CAN communication unit and a standby sensor unit; the first processor unit is respectively connected with the wireless communication unit, the power supply control unit, the data storage unit and the first CAN communication unit;
the detection module is arranged in the battery box and comprises a second processor unit, a second CAN communication unit, a main sensor unit and a driving unit, wherein the second processor unit is respectively connected with the second CAN communication unit, the main sensor unit and the driving unit;
the pipeline component comprises a pipeline piece laid in the battery box, the pipeline piece is connected with a fire extinguishing agent supply device, and a controllable valve is arranged on the pipeline piece; the nozzle is arranged in the battery box and is communicated with the pipeline piece;
the fire suppression module is arranged in the battery box, is connected with the nozzle and is used for controlling the nozzle to work;
the first processor unit is used for controlling the controllable valve and the nozzle to work according to the input instruction of the controlled module;
the first processor unit is respectively connected with the controlled module and the alarm module through the wireless communication unit, and the first processor unit and the second processor unit are communicated through the first CAN communication unit and the second CAN communication unit.
Preferably, the wireless communication unit is a 4G wireless communication unit.
Preferably, the back-up sensor unit comprises one or more of a carbon monoxide sensor, a VOC sensor, a flame sensor, a pressure sensor and a temperature and humidity sensor.
Preferably, the main sensor unit comprises one or more of a carbon monoxide sensor, a VOC sensor, a flame sensor, a pressure sensor and a temperature and humidity sensor.
Preferably, the second processor unit is used for controlling the controllable valve and the nozzle to work through the driving unit according to the detection result of the main sensor unit.
Preferably, the second processor unit is used for controlling the controllable valve to be opened and controlling the nozzle to continuously work according to the emergency fire extinguishing time value when the main sensor unit detects the fire; and the fire suppression module is used for adjusting the working mode of the nozzle after the emergency fire extinguishing time value is finished and controlling the nozzle to continuously work until the environmental parameters in the battery box reach preset safety parameters.
Preferably, the safety parameter is that the temperature in the battery box is less than or equal to 150 ℃.
Preferably, the fire suppression device comprises a plurality of detection modules, a fire suppression device module, a pipeline assembly and a nozzle which respectively correspond to each battery box, the manual control module comprises a plurality of control buttons which respectively correspond to each battery box, and the main control module comprises a standby sensor unit which respectively corresponds to each battery box and is arranged outside the corresponding battery box; the first processor is used for controlling the alarm module to give an alarm according to the fire information detected by the detection module or the standby sensor unit.
Preferably, the alarm module adopts an audible and visual alarm, and the alarm module comprises alarm lamps corresponding to the battery boxes respectively.
Preferably, the pipeline member is a high-temperature hose or a stainless steel corrugated pipe.
According to the self-adaptive fire prevention and control device for the power lithium battery box, the main sensor unit is used for detecting a battery fire from the interior of the battery box so as to find the fire in time at the fire germination stage, eliminate the fire in time and avoid damage to the battery box. The standby sensor unit is used for detecting the battery fire from the outside of the battery box, so that the detection module in the battery box can further detect the fire through the standby sensor when the fire is damaged, and the reliability of fire monitoring is ensured. Therefore, the arrangement of the main sensor unit ensures the timely monitoring of the fire, and is beneficial to early discovery and elimination of the fire; due to the isolation of the battery box, the standby sensor unit is ensured to have enough time to transmit the fire information, and the reliability of fire monitoring is ensured.
The self-adaptive fire prevention and control device for the power lithium battery box can effectively monitor fire hazard source signs generated in the battery box when in work, can adaptively adjust the spraying time and the spraying amount of a fire suppression medium when in fire, realizes quick fire extinguishing of the battery fire and effective reduction of the temperature of a thermal runaway battery, and uploads fire hazard dangerous case information.
According to the invention, early warning of fire hazard signs of the battery box and self-adaptive fire extinguishing and cooling are realized, and closure and intelligent monitoring of a fire and intelligent closed-loop monitoring and fire extinguishing after the fire occurs can be effectively implemented through the arrangement of the detection module, the pipeline assembly and the nozzle.
Drawings
Fig. 1 is a schematic diagram of a power lithium battery box adaptive fire prevention and control device according to the present invention;
FIG. 2 is a schematic view of an operation state of the self-adaptive fire prevention and control device of the power lithium battery box shown in FIG. 1;
fig. 3 is a schematic view of another working state of the self-adaptive fire prevention and control device for the power lithium battery box shown in fig. 1.
Detailed Description
Referring to fig. 1, the invention provides a self-adaptive fire prevention and control device for a power lithium battery box, which comprises: the fire suppression device comprises a main control module, a detection module, an alarm module, a fire suppression device module, a manual control module, a pipeline assembly and a nozzle.
The main control module is installed outside the battery box and comprises a first processor unit, a wireless communication unit, a power supply control unit, a data storage unit, a first CAN communication unit and a standby sensor unit. The first processor unit is respectively connected with the wireless communication unit, the power supply control unit, the data storage unit and the first CAN communication unit. In this embodiment, the data storage unit is configured to record the fire monitoring information acquired by the first processing unit so as to query historical data.
The main control module is located outside the battery box, so that the safety and the reliability of the work of the battery box are guaranteed, and the damage to the main control module caused by the fire in the battery box is avoided.
In this embodiment, the power control unit is used for controlling the connection between the batteries in each battery box and the power supply line, so that when a certain battery box is seriously damaged due to fire, the power control unit can open the circuit between the battery box and the power supply line, and the instability of the power supply line caused by the damaged batteries is avoided.
The detection module is arranged in the battery box and comprises a second processor unit, a second CAN communication unit, a main sensor unit and a driving unit, and the second processor unit is respectively connected with the second CAN communication unit, the main sensor unit and the driving unit.
In this embodiment, the main sensor unit is used for detecting the battery conflagration from the battery box is inside to in time discover at the conflagration bud stage, so that in time eliminate the condition of a fire, avoid the battery box impaired. In this embodiment, the main sensor unit includes one or more of a carbon monoxide sensor, a VOC sensor, a flame sensor, a pressure sensor, and a temperature/humidity sensor.
In this embodiment, the standby sensor unit is used for detecting the battery fire from the outside of the battery box, so that the detection module in the battery box can further detect the fire through the standby sensor when the fire is damaged, and the reliability of fire monitoring is ensured. Thus, in the embodiment, the main sensor unit is arranged, so that the fire monitoring is timely ensured, and the early discovery and elimination of the fire are facilitated; due to the isolation of the battery box, the standby sensor unit is ensured to have enough time to transmit the fire information, and the reliability of fire monitoring is ensured. Specifically, in this embodiment, the spare sensor unit includes one or more of a carbon monoxide sensor, a VOC sensor, a flame sensor, a pressure sensor, and a temperature/humidity sensor.
The pipeline component comprises a pipeline piece paved in the battery box, the pipeline piece is connected with a fire extinguishing agent supply device, and a controllable valve is arranged on the pipeline piece. The nozzle is installed in the battery box and communicated with the pipeline member. Therefore, when the controllable valve is opened, the fire extinguishing agent supplied by the fire extinguishing agent supply device is conveyed to the nozzle through the pipeline assembly, and after the nozzle is opened, the fire extinguishing agent is sprayed into the battery box to extinguish the fire.
The fire suppression module is arranged in the battery box and connected with the nozzle for controlling the operation of the nozzle. Specifically, the fire suppression module is used for controlling the working mode of the nozzle, specifically, the injection time, the injection pressure and the like of the nozzle.
When the fire extinguishing device is specifically implemented, an emergency fire extinguishing time value can be set in the second processor unit, and the second processor unit is used for controlling the controllable valve to be opened and controlling the nozzle to continuously work and the emergency fire extinguishing time value when the main sensor unit detects a fire condition so as to eliminate the fire in time. And the fire suppression module is used for adjusting the working mode of the nozzle after the emergency fire extinguishing time value is finished and controlling the nozzle to continuously work until the environmental parameters in the battery box reach preset safety parameters. For example, in the present embodiment, assuming that the emergency fire extinguishing time value is 5s, the safety parameter is that the temperature inside the battery box is 150 degrees celsius or less. When the main sensor unit detects a fire, the second processor unit controls the controllable valve and the nozzle to be opened, and the nozzle continuously sprays for 5 s; meanwhile, the fire suppression module acquires the temperature inside the battery box detected by the main sensor unit in real time and controls the nozzle to continuously work to suppress the risk of fire recurrence, and when the main sensor unit detects that the temperature inside the battery box is lower than 150 ℃, the second processor unit controls the controllable valve and the nozzle to be closed. Specifically, the second processor unit controls the nozzle to be opened and work at the maximum spraying speed within the emergency fire extinguishing time value; after the emergency fire extinguishing time value is over, the fire suppression module can control the nozzle to work at a lower spraying speed so as to improve the utilization rate of the fire extinguishing agent.
Specifically, in this embodiment, the second processor unit is configured to control the operation of the controllable valve and the nozzle through the driving unit according to the detection result of the main sensor unit.
The manual control module and the alarm module are both arranged in the cockpit, and the first processor unit is used for controlling the controllable valve and the nozzle to work according to the input instruction of the controlled module.
The first processor unit is respectively connected with the controlled module and the alarm module through the wireless communication unit, and the first processor unit and the second processor unit are communicated through the first CAN communication unit and the second CAN communication unit. Specifically, the wireless communication unit adopts a 4G wireless communication unit. Specifically, in this embodiment, the fire monitoring information may also be uploaded to a fire control center and/or an instrument panel through the wireless communication unit.
The detection module is installed inside the battery box and is easily influenced by fire, and in the embodiment, after the standby sensor unit detects that the battery box is on fire, a driver can start the corresponding controllable valve and the corresponding nozzle through the manual control module to extinguish the fire of the battery box, so that multiple controllability of extinguishing the fire of the battery box is ensured, and the work safety of the battery box is improved. The arrangement of the alarm module is beneficial to a driver to know fire information in time so as to control the fire extinguishing measures in the battery box through the controlled module.
In this embodiment, the fire suppression device includes a plurality of detection modules corresponding to the battery boxes, a fire suppression device module, a pipe assembly, and a nozzle, the manual control module includes a plurality of control buttons corresponding to the battery boxes, and the main control module includes a backup sensor unit corresponding to the battery boxes and installed outside the corresponding battery boxes. The first processor is used for controlling the alarm module to give an alarm according to the fire information detected by the detection module or the standby sensor unit. Specifically, the alarm module adopts an audible and visual alarm, and the alarm module comprises alarm lamps corresponding to the battery boxes respectively. Therefore, in the embodiment, the fire monitoring of each battery box is realized through the detection module and the standby sensor unit, and the overall monitoring and control of all the battery boxes are realized through the main control module.
Specifically, the power lithium battery box adaptive fire prevention and control device provided in the present embodiment operates as follows.
Firstly, when a certain battery box is on fire, the main sensor unit firstly monitors fire information and sends the fire information to the second processor unit, and the second processor unit controls the controllable valve to be opened and controls the nozzle to work through the driving unit to extinguish the fire; and then the fire suppression module controls the nozzle to work again to suppress the recurrence of the fire. At this time, since the fire is extinguished in time, the standby sensor unit does not detect the fire information. With particular reference to fig. 2.
If the battery box is in serious fire, the detection module is damaged by the fire, the standby sensor sends fire information to the first sensor unit, the first sensor unit controls the alarm module to give an alarm, a driver inputs a fire extinguishing instruction through the first processor unit of the manual control module box, and the first processor unit controls the corresponding controllable valve and the corresponding nozzle to work to extinguish the fire. With particular reference to fig. 3.
In this embodiment, the piping member is a high temperature hose or a corrugated stainless steel pipe to prevent damage in a fire.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (8)
1. The utility model provides a power lithium battery box self-adaptation conflagration prevention and control device which characterized in that includes: the fire disaster prevention device comprises a main control module, a detection module, an alarm module, a fire disaster suppression device module, a manual control module, a pipeline assembly and a nozzle;
the main control module is arranged outside the battery box and comprises a first processor unit, a wireless communication unit, a power supply control unit, a data storage unit, a first CAN communication unit and a standby sensor unit; the first processor unit is respectively connected with the wireless communication unit, the power supply control unit, the data storage unit and the first CAN communication unit;
the detection module is arranged in the battery box and comprises a second processor unit, a second CAN communication unit, a main sensor unit and a driving unit, wherein the second processor unit is respectively connected with the second CAN communication unit, the main sensor unit and the driving unit;
the pipeline component comprises a pipeline piece laid in the battery box, the pipeline piece is connected with a fire extinguishing agent supply device, and a controllable valve is arranged on the pipeline piece; the nozzle is arranged in the battery box and is communicated with the pipeline piece;
the fire suppression module is arranged in the battery box, is connected with the nozzle and is used for controlling the nozzle to work;
the first processor unit is used for controlling the controllable valve and the nozzle to work according to the input instruction of the controlled module;
the first processor unit is respectively connected with the controlled module and the alarm module through the wireless communication unit, and the first processor unit and the second processor unit are communicated through the first CAN communication unit and the second CAN communication unit;
the second processor unit is used for controlling the controllable valve to be opened and controlling the nozzle to continuously work according to the emergency fire extinguishing time value when the main sensor unit detects the fire; the fire suppression module is used for adjusting the working mode of the nozzle after the emergency fire extinguishing time value is finished and controlling the nozzle to continuously work until the environmental parameters in the battery box reach preset safety parameters;
the fire suppression device comprises a plurality of detection modules, a fire suppression device module, a pipeline assembly and a nozzle, wherein the detection modules, the fire suppression device modules, the pipeline assembly and the nozzle respectively correspond to the battery boxes; the first processor is used for controlling the alarm module to alarm according to the fire information detected by the detection module or the standby sensor unit;
the main sensor unit is used for detecting a battery fire from the inside of the battery box so as to find the fire in time at the fire germination stage, eliminate the fire in time and avoid the damage of the battery box;
the arrangement of the main sensor unit ensures the timely monitoring of the fire, and is beneficial to early discovery and elimination of the fire; due to the arrangement of the standby sensor unit, due to the isolation of the battery box, the standby sensor unit is ensured to have enough time to transmit the fire information, and the reliability of fire monitoring is ensured;
the standby sensor unit is used for detecting a battery fire from the outside of the battery box, so that the detection module in the battery box can further detect the fire through the standby sensor when the detection module is damaged due to the fire, and the reliability of fire monitoring is ensured;
firstly, when a certain battery box is on fire, the main sensor unit firstly monitors fire information and sends the fire information to the second processor unit, and the second processor unit controls the controllable valve to be opened and controls the nozzle to work through the driving unit to extinguish the fire; then the fire suppression module controls the nozzle to work again to suppress the recurrence of the fire; at this time, since the fire is extinguished in time, the spare sensor unit does not detect the fire information;
if the battery box is in serious fire, the detection module is damaged by the fire, the standby sensor sends fire information to the first sensor unit, the first sensor unit controls the alarm module to give an alarm, a driver inputs a fire extinguishing instruction through the first processor unit of the manual control module box, and the first processor unit controls the corresponding controllable valve and the corresponding nozzle to work to extinguish the fire.
2. The adaptive fire prevention and control device of the power lithium battery box of claim 1, wherein the wireless communication unit is a 4G wireless communication unit.
3. The adaptive fire prevention and control device of claim 1, wherein the backup sensor unit comprises one or more of a carbon monoxide sensor, a VOC sensor, a flame sensor, a pressure sensor, and a temperature and humidity sensor.
4. The adaptive fire prevention and control device of claim 1, wherein the main sensor unit comprises one or more of a carbon monoxide sensor, a VOC sensor, a flame sensor, a pressure sensor, and a temperature and humidity sensor.
5. The adaptive fire prevention and control device of a lithium battery box according to claim 1, wherein the second processor unit is used for controlling the operation of the controllable valve and the nozzle through the driving unit according to the detection result of the main sensor unit.
6. The adaptive fire prevention and control device of claim 1, wherein the safety parameter is a temperature in the battery box of less than or equal to 150 ℃.
7. The self-adaptive fire prevention and control device of the power lithium battery box as claimed in claim 1, wherein the alarm module is an audible and visual alarm, and the alarm module comprises alarm lamps corresponding to the battery boxes respectively.
8. The adaptive fire prevention and control device of a lithium-ion battery box according to claim 1, wherein the piping member is a high-temperature hose or a corrugated stainless steel pipe.
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| CN110649207B (en) * | 2019-10-18 | 2022-03-01 | 安徽中科中涣防务装备技术有限公司 | Fire prevention and control explosion-proof valve of lithium battery box |
| CN113328150A (en) * | 2021-04-26 | 2021-08-31 | 南通路远科技信息有限公司 | Battery pack with protective device |
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