CN112964305A - Lithium ion energy storage battery fire on-line monitoring device - Google Patents
Lithium ion energy storage battery fire on-line monitoring device Download PDFInfo
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- CN112964305A CN112964305A CN202110259596.7A CN202110259596A CN112964305A CN 112964305 A CN112964305 A CN 112964305A CN 202110259596 A CN202110259596 A CN 202110259596A CN 112964305 A CN112964305 A CN 112964305A
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000004146 energy storage Methods 0.000 title claims abstract description 55
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 55
- 238000012806 monitoring device Methods 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 claims abstract description 66
- 238000012544 monitoring process Methods 0.000 claims abstract description 58
- 239000000779 smoke Substances 0.000 claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims description 64
- 238000004891 communication Methods 0.000 claims description 27
- 230000008859 change Effects 0.000 claims description 21
- 238000009423 ventilation Methods 0.000 claims description 9
- 230000002159 abnormal effect Effects 0.000 claims description 6
- 238000009795 derivation Methods 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/488—Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention relates to a lithium ion energy storage battery fire on-line monitoring device, which is characterized in that a monitoring component is arranged in a battery cabinet, so that the temperature, smoke and flame information in the battery cabinet are monitored in real time, and the opening and closing of a first sealing door and a second sealing door are controlled through the temperature information, so that the internal temperature of the battery cabinet can be effectively controlled in time under the condition of no participation of people, the occurrence of fire of a lithium ion energy storage battery is suppressed, and the time is strived for the staff to arrive at the site before the battery catches fire.
Description
Technical Field
The invention relates to the technical field of fire monitoring only, in particular to a lithium ion energy storage battery fire on-line monitoring device.
Background
With the large-scale development of national new energy and smart grid construction, the energy storage industry is rapidly developed, and the demand of the energy storage market is increasingly increased. The lithium ion battery is used for storing energy to become a new energy storage mode in China, has the characteristics of high energy density, long cycle life, small volume, light weight, environmental protection and the like, and plays an important role in peak clipping and valley filling, emergency standby, improvement of electric energy quality and the like. However, the lithium ion energy storage battery system is characterized in that the number of batteries is large, the working environment is relatively closed, and the batteries can release a large amount of heat in the charging and discharging processes. Considering that the lithium ion energy storage battery does not realize intrinsic safety, a large number of side reactions can occur inside the lithium ion energy storage battery under some extreme abuse conditions, thermal runaway can be caused, and even combustion and explosion can be developed to cause large-scale fire accidents. The lithium ion energy storage battery has the advantages that the early-stage sign of a fire is not obvious, the fire spreading speed is high, if the battery waits for open fire to extinguish, the fire extinguishing effect is poor, the battery is easy to reburn, and time and labor are wasted.
The utility model discloses a lithium cell fire monitored control system as application number 201810650211.8, including box, a plurality of automatic control device, extinguishing device, a plurality of alarm device, be equipped with baffle, lithium cell in the box and place the chamber and detect the chamber, automatic control device installs on the baffle, and automatic control device connects alarm device, and extinguishing device is including installing four storage water tanks on the baffle and above, and the storage water tank sets up a plurality of shower nozzles with the baffle junction. The invention has the beneficial effects that: the system has the advantages that the whole detection system is more complete due to the adoption of a plurality of monitoring points, most importantly, the system adopts water to extinguish the fire of the lithium battery, and finally, the water is used for annihilating the lithium battery, so that the system not only realizes the fire extinguishing effect, but also further cools the interior of the lithium battery to prevent secondary fire; the invention has simple structure and equipment, relatively low price of the adopted equipment and high popularization. The method is a fire extinguishing measure after the lithium battery catches fire, and the battery catches fire at the moment, so that the loss is large.
Therefore, the lithium ion energy storage battery fire on-line monitoring device needs to be developed to monitor the battery state all the time, an alarm can be given out at the early stage that the fire is about to happen but the battery is not open fire, meanwhile, the internal temperature of the battery cabinet can be effectively controlled in time, more time is strived for workers to arrive at the site, and the lithium ion energy storage battery fire on-line monitoring device is an important link for suppressing the occurrence of the lithium ion energy storage battery fire.
Disclosure of Invention
The invention aims to solve the technical problem of how to avoid fire caused by untimely handling of personnel when the temperature of the lithium ion energy storage battery stored in the battery cabinet is too high.
The invention solves the technical problems through the following technical means:
a lithium ion energy storage battery fire on-line monitoring device comprises a battery cabinet, a lithium ion energy storage battery arranged in the battery cabinet, a monitoring assembly, a power module arranged outside the battery cabinet, a communication module, a monitoring main platform and a ventilation mechanism, wherein the monitoring assembly comprises a power module and a communication module;
the lithium ion energy storage battery is positioned in the battery cabinet and has a certain distance from the top of the battery cabinet; the monitoring assembly is arranged on the top wall of the inner side of the battery cabinet; the power module is fixed on the outer wall of the battery cabinet and penetrates through the side wall of the battery cabinet through a power line to be electrically connected with the monitoring assembly; the monitoring assembly is in communication connection with the monitoring main platform through the communication module; the power supply module supplies power to the communication module;
the ventilation mechanism comprises an air inlet, an air outlet and a fan; the air inlet and the air outlet are respectively arranged on two opposite side walls of the battery cabinet, and a first sealing door and a second sealing door are respectively arranged at the air inlet and the air outlet; the first sealing door and the second sealing door are driven to open and close by a first driving mechanism and a second driving mechanism respectively; the fan is arranged at the air outlet; the power supply module is electrically connected with the driving mechanism and the fan respectively;
the monitoring main platform is in communication connection with the first driving mechanism, the second driving mechanism and the fan;
after the first sealing door and the second sealing door are opened, air enters the battery cabinet from the air inlet and exits from the bottom of the battery cabinet towards the air outlet.
According to the invention, the monitoring component is arranged in the battery cabinet, so that the temperature, smoke and flame information in the battery cabinet can be monitored in real time, and the opening and closing of the first sealing door and the second sealing door can be controlled through the temperature information, so that the internal temperature of the battery cabinet can be effectively controlled in time under the condition of no participation of people, the lithium ion energy storage battery is prevented from generating fire, and time is strived for workers to arrive at the site before the battery catches fire.
According to the invention, through the specially designed first sealing door and the second sealing door, air flow is ensured to enter and flow into the bottom from the upper part of one side of the battery cabinet and then flow out from the upper part of the other side of the battery cabinet, cold air traverses the whole battery cabinet, and the cooling effect is better.
Furthermore, the air inlet and the air outlet are both higher than the lithium ion energy storage battery.
Furthermore, the upper edge of the first sealing door is hinged with the upper edge of the air inlet, and the first driving mechanism drives the first sealing door to open towards the interior of the battery cabinet; the upper edge of the second sealing door is hinged with the upper edge of the air outlet, and the second driving mechanism drives the second sealing door to be opened towards the inside of the battery cabinet.
Furthermore, the first driving mechanism and the second driving mechanism are fixed on the inner wall of the battery cabinet.
Furthermore, the first driving mechanism and the second driving mechanism are both cylinders and are respectively fixed on the inner walls of the battery cabinet below the air inlet and the air outlet; the output ends of the first driving mechanism and the second driving mechanism are respectively hinged and fixed with the lower edges of the first sealing door and the second sealing door, and the cylinder seats of the first driving mechanism and the second driving mechanism are hinged and fixed with the inner wall of the battery cabinet.
Furthermore, an air curtain is fixed on the lower edge of the first sealing door.
Furthermore, the monitoring assembly comprises a temperature-sensing detector, a smoke detector and a flame detector, and is respectively used for collecting and receiving a temperature signal of the lithium ion energy storage battery, a characteristic gas and smoke signal and a flame signal generated when a fire disaster occurs.
Further, the monitoring main platform comprises a data processor, an access terminal and an alarm system; the data processor is in communication connection with the communication module, and the data processor is in communication connection with the access terminal and the alarm system.
Further, the data processor is in communication connection with the first driving mechanism and the second driving mechanism.
Further, the data processor judges that the lithium ion energy storage battery is abnormal and the alarm system gives an alarm under the following conditions:
(1) obtaining a temperature T-acquisition time T curve, utilizing the temperature T to conduct derivation dT/dT on the acquisition time T to obtain the temperature change rate delta T at a certain acquisition moment, and forming a temperature change rate historical database D { delta T }1,Δt2,…,Δtn}; rate of change Δ t calculated by monitoring temperature data at the next acquisition timen+1Comparing with historical database, if the change rate delta t of the acquisition timen+1Less than max D { Δ t1,Δt2,…,ΔtnAnd fourthly, temporarily keeping the lithium ion energy storage battery in a safe state, and if the change rate delta t of the acquisition moment is larger than the preset valuen+1Greater than max D { Δ t1,Δt2,…,ΔtnGet the attention of the data processor and take the rate of change max D Δ t1,Δt2,…,Δtn,Δtn+1As a temperature rate-of-change threshold; in the next stage, if the temperature change rate of the temperature acquisition points with the quantity exceeding 80 percent is higher than the threshold value within the specified continuous acquisition time, immediately alarming and controlling the first driving mechanism, the second driving mechanism and the fan to start;
(2) and when the temperature of the battery is higher than a preset temperature threshold value and/or a characteristic gas signal, a smoke signal and a flame signal are detected, immediately giving an alarm.
The invention has the advantages that:
according to the invention, the monitoring assembly is arranged in the battery cabinet, so that the temperature, smoke and flame information in the battery cabinet can be monitored in real time, and the opening and closing of the first sealing door and the second sealing door can be controlled through the temperature information, so that the internal temperature of the battery cabinet can be effectively controlled in time under the condition of no participation of people, and the fire disaster of the lithium ion energy storage battery can be suppressed. The design of the alarm system is combined, when the battery is reminded to be abnormal, the ventilation mechanism strives for time for the worker to arrive at the site before the battery catches fire.
According to the invention, through the specially designed first sealing door and the second sealing door, air flow is ensured to enter and flow into the bottom from the upper part of one side of the battery cabinet and then flow out from the upper part of the other side of the battery cabinet, cold air traverses the whole battery cabinet, and the cooling effect is better.
The output ends of the first driving mechanism and the second driving mechanism are respectively hinged with the first sealing door and the second sealing door. The sealing door can be flexibly opened and closed, and cold air can be timely fed into the battery cabinet.
The historical state monitoring data of the lithium ion battery are stored to form a historical database, the real-time online monitoring data can be effectively compared with the historical data, if abnormal states are found, an alarm can be given out before a fire disaster happens, staff and devices are reminded to take corresponding measures, and the fire disaster is restrained.
Drawings
FIG. 1 is a schematic diagram of an overall structure of an on-line monitoring device according to an embodiment of the present invention;
fig. 2 is a schematic view of a communication structure between the monitoring assembly, the ventilation mechanism and the monitoring main platform according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, the lithium ion energy storage battery fire on-line monitoring device comprises a battery cabinet 1, a lithium ion energy storage battery 2 installed in the battery cabinet 1, a monitoring assembly 4 installed at the top of the inner side of the battery cabinet 1 and installed on a power module 3 outside the battery cabinet 1, a communication module 5 arranged outside the battery cabinet 1, a monitoring main platform 6 and a ventilation mechanism 7.
The power module 3 includes a power source 31 and a power supply driving device 32. The power supply 31 may be a 220V ac power supply or a lithium ion battery. The power supply driving device 32 is respectively connected with the power supply 31, the monitoring component 4, the communication module 5 and the ventilation mechanism 7 so as to realize power supply to the monitoring component 4.
As shown in fig. 2, the monitoring assembly 4 includes a temperature monitoring unit 41, a smoke monitoring unit 42, and a flame monitoring unit 43, where the temperature monitoring unit 41 is a temperature sensing detector, the smoke monitoring unit 42 is a smoke detector, and the flame monitoring unit 43 is a flame detector, and is respectively configured to collect a temperature signal of the lithium ion energy storage battery, a characteristic gas and a smoke signal generated during a fire, and a flame signal, and feed these characteristic information back to the monitoring main platform 6 through the communication module 5. It should be noted that the installation number and the specific installation position of each detector should be determined according to actual requirements.
The communication module 5 is responsible for transmitting the collected temperature signals, the characteristic gas and smoke signals generated in the case of fire and the flame signals to the monitoring main platform 6, and the communication mode can be through a data transmission line or wireless transmission.
The monitoring host platform 6 includes a data processor 61, an access terminal 62 and an alarm system 63. The data processor 61 is used for processing and analyzing the collected signal data, and judging whether the battery is abnormal or not and whether a fire occurs or not according to the set conditions. The existing mature application software is installed in the access terminal 62, and a worker can directly monitor the state of the lithium ion energy storage battery through the access terminal device to know whether alarm information is displayed or not. And the alarm system 63 feeds back the state of the lithium ion energy storage battery to the alarm system 63 and gives an alarm when the data processor 61 judges that the lithium ion energy storage battery is abnormal or a fire disaster occurs.
As shown in fig. 1, the ventilation mechanism 7 includes an air inlet, an air outlet, and a fan 75; the air inlet and the air outlet are respectively arranged on two opposite side walls of the battery cabinet 1 and are generally higher than the batteries. The air inlet and the air outlet are respectively provided with a first sealing door 71 and a second sealing door 72; the first sealing door 71 and the second sealing door 72 are driven to open and close by a first driving mechanism 73 and a second driving mechanism 74 respectively; the fan 75 is installed at the air outlet; the power module is electrically connected to the driving mechanism and the fan 75.
The air inlet and the air outlet are both higher than the lithium ion energy storage battery. The upper edge of the first sealing door 71 is hinged with the upper edge of the air inlet, and the first driving mechanism 73 drives the first sealing door 71 to open towards the interior of the battery cabinet; the upper edge of the second sealing door 72 is hinged with the upper edge of the air outlet, and the second driving mechanism 74 drives the second sealing door 72 to open towards the interior of the battery cabinet. After the first sealing door 71 and the second sealing door 72 are opened, under the guiding action of the first sealing door 71 and the second sealing door 72, air enters the battery cabinet from the air inlet and flows upwards from the bottom of the battery cabinet, and air flows out from the bottom of the battery cabinet towards the air outlet, so that cold air is guaranteed to flow upwards from the bottom of the battery cabinet, heat of all batteries is taken away, and the effect of rapid cooling is achieved. In order to ensure that cold air can enter the bottom of the battery cabinet, an air curtain 76 is further fixed to the lower edge of the first sealing door 71 in the embodiment.
As shown in fig. 2, the data processor is connected to the first driving mechanism 73, the second driving mechanism 74 and the blower 75 in communication; in this embodiment, the first driving mechanism 73 and the second driving mechanism 74 are air cylinders, and are fixed on the inner wall of the battery cabinet and located below the air inlet and the air outlet. The end part of the cylinder seat of the cylinder is hinged with the inner wall of the battery cabinet, and the output end of the cylinder seat is hinged with the lower edges of the first sealing door 71 and the second sealing door 72 respectively. When the first driving mechanism 73 and the second driving mechanism 74 respectively drive the first sealing door 71 and the second sealing door 72, the rotation of the sealing door is realized through the hinge structure of the output end and the lower edge of the sealing door. Certainly, when the first sealing door 71 and the second sealing door 72 are in a closed state, due to the limitation of the hinge structure, a certain gap exists between the first sealing door 71 and the air inlet or the air outlet, and if sealing is needed, sealing rings can be arranged on the corresponding sides of the first sealing door 71 and the second sealing door 72 to realize sealing.
The conditions for judging the abnormality of the lithium ion energy storage battery and alarming by the alarm system 63 by the data processor 61 are as follows:
(1) obtaining a temperature T-acquisition time T curve, utilizing the temperature T to conduct derivation dT/dT on the acquisition time T to obtain the temperature change rate delta T at a certain acquisition moment, and forming a temperature change rate historical database D { delta T }1,Δt2,…,Δtn}. Rate of change Δ t calculated by monitoring temperature data at the next acquisition timen+1Comparing with historical database, if the change rate delta t of the acquisition timen+1Less than max D { Δ t1,Δt2,…,ΔtnAnd fourthly, temporarily keeping the lithium ion energy storage battery in a safe state, and if the change rate delta t of the acquisition moment is larger than the preset valuen+1Greater than max D { Δ t1,Δt2,…,ΔtnGet the attention of the data processor and take the rate of change max D Δ t1,Δt2,…,Δtn,Δtn+1As a temperature rate-of-change threshold. And in the next stage, if the temperature change rate of the temperature collection points with the number exceeding 80 percent is higher than the threshold value within the specified continuous collection time, immediately alarming.
(2) And when the temperature of the battery is higher than a preset temperature threshold value and/or a characteristic gas signal, a smoke signal and a flame signal are detected, immediately giving an alarm.
It should be noted that there is no precedence order in the conditions, and an alarm can be given when any condition is satisfied. The monitoring signals do not have the sequence, can be respectively carried out or carried out simultaneously, can be independently used as the basis of alarming, and can also be used as the basis of alarming after the monitoring signals are integrated. The alarm mode may be a text and symbol alarm in the display screen of the terminal device 62, an audible and visual alarm through an alarm lamp or a speaker, or a remote alarm through short message notification to the staff.
When the condition (1) is met, the monitoring main platform 6 controls the first driving mechanism, the second driving mechanism and the fan to be started, the lithium ion energy storage battery is cooled, and the occurrence of fire disasters is restrained. In addition, the monitoring main platform 6 can also be connected with a fire extinguishing system, when the condition (2) is met, the fact that the lithium ion energy storage battery is about to generate/has generated a fire disaster is indicated, and the monitoring main platform 6 can send an instruction to the arranged fire extinguishing system and take corresponding emergency measures. The monitoring main platform 6 can also be directly connected with a video monitoring system, and workers can observe the external condition of the battery by accessing a display screen of the terminal 62.
The working process of the lithium ion energy storage battery fire on-line monitoring device is as follows:
the temperature monitoring unit 41, the smoke monitoring unit 42 and the flame monitoring unit 43 are used for feeding back the characteristic information to the monitoring main platform 6 through the communication module 5 when acquiring a temperature signal of the lithium ion energy storage battery, a characteristic gas and smoke signal generated in a fire disaster and a flame signal. When the data processor 61 judges that the alarm condition (1) is met, the alarm system 63 performs alarm operation, and controls the first driving mechanism 73, the second driving mechanism 74 and the fan 75 to start, so as to cool the interior of the battery cabinet by air cooling in time. When the data processor 61 judges that the alarm condition (2) is satisfied, the alarm system 63 performs alarm operation, and at the same time, the monitoring main platform 6 sends an instruction to the installed fire extinguishing system and takes corresponding emergency measures. The staff can also monitor the state of the lithium ion energy storage battery and receive an alarm instruction on the display screen of the access terminal 62.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a lithium ion energy storage battery conflagration on-line monitoring device which characterized in that: the monitoring system comprises a battery cabinet, a lithium ion energy storage battery arranged in the battery cabinet, a monitoring assembly, a power module arranged outside the battery cabinet, a communication module, a monitoring main platform and a ventilation mechanism;
the lithium ion energy storage battery is positioned in the battery cabinet and has a certain distance from the top of the battery cabinet; the monitoring assembly is arranged on the top wall of the inner side of the battery cabinet; the power module is fixed on the outer wall of the battery cabinet and penetrates through the side wall of the battery cabinet through a power line to be electrically connected with the monitoring assembly; the monitoring assembly is in communication connection with the monitoring main platform through the communication module; the power supply module supplies power to the communication module;
the ventilation mechanism comprises an air inlet, an air outlet and a fan; the air inlet and the air outlet are respectively arranged on two opposite side walls of the battery cabinet, and a first sealing door and a second sealing door are respectively arranged at the air inlet and the air outlet; the first sealing door and the second sealing door are driven to open and close by a first driving mechanism and a second driving mechanism respectively; the fan is arranged at the air outlet; the power supply module is electrically connected with the driving mechanism and the fan respectively;
the monitoring main platform is in communication connection with the first driving mechanism, the second driving mechanism and the fan;
after the first sealing door and the second sealing door are opened, air enters the battery cabinet from the air inlet and exits from the bottom of the battery cabinet towards the air outlet.
2. The lithium ion energy storage battery fire on-line monitoring device according to claim 1, characterized in that: and the air inlet and the air outlet are both higher than the lithium ion energy storage battery.
3. The lithium ion energy storage battery fire on-line monitoring device according to claim 1, characterized in that: the upper edge of the first sealing door is hinged with the upper edge of the air inlet, and the first driving mechanism drives the first sealing door to open towards the interior of the battery cabinet; the upper edge of the second sealing door is hinged with the upper edge of the air outlet, and the second driving mechanism drives the second sealing door to be opened towards the inside of the battery cabinet.
4. The lithium ion energy storage battery fire on-line monitoring device according to any one of claims 1 to 3, characterized in that: the first driving mechanism and the second driving mechanism are fixed on the inner wall of the battery cabinet.
5. The lithium ion energy storage battery fire on-line monitoring device according to any one of claims 1 to 3, characterized in that: the first driving mechanism and the second driving mechanism are both cylinders and are respectively fixed on the inner walls of the battery cabinet below the air inlet and the air outlet; the output ends of the first driving mechanism and the second driving mechanism are respectively hinged and fixed with the lower edges of the first sealing door and the second sealing door, and the cylinder seats of the first driving mechanism and the second driving mechanism are hinged and fixed with the inner wall of the battery cabinet.
6. The lithium ion energy storage battery fire on-line monitoring device according to any one of claims 1 to 3, characterized in that: and an air curtain is further fixed on the lower edge of the first sealing door.
7. The lithium ion energy storage battery fire on-line monitoring device according to any one of claims 1 to 3, characterized in that: the monitoring assembly comprises a temperature-sensing detector, a smoke detector and a flame detector, and is respectively used for collecting and receiving a temperature signal of the lithium ion energy storage battery, a characteristic gas and smoke signal and a flame signal generated when a fire disaster occurs.
8. The lithium ion energy storage battery fire on-line monitoring device according to claim 7, characterized in that: the monitoring main platform comprises a data processor, an access terminal and an alarm system; the data processor is in communication connection with the communication module, and the data processor is in communication connection with the access terminal and the alarm system.
9. The lithium ion energy storage battery fire on-line monitoring device according to claim 8, characterized in that: the data processor is in communication connection with the first driving mechanism and the second driving mechanism.
10. The lithium ion energy storage battery fire on-line monitoring device according to claim 8, characterized in that: the data processor judges the conditions that the lithium ion energy storage battery is abnormal and the alarm system gives an alarm are as follows:
(1) obtaining a temperature T-acquisition time T curve, utilizing the temperature T to conduct derivation dT/dT on the acquisition time T to obtain the temperature change rate delta T at a certain acquisition moment, and forming a temperature change rate historical database D { delta T }1,Δt2,…,Δtn}; rate of change Δ t calculated by monitoring temperature data at the next acquisition timen+1Comparing with historical database, if the change rate delta t of the acquisition timen+1Less than max D { Δ t1,Δt2,…,ΔtnAnd fourthly, temporarily keeping the lithium ion energy storage battery in a safe state, and if the change rate delta t of the acquisition moment is larger than the preset valuen+1Greater than max D { Δ t1,Δt2,…,ΔtnGet the attention of the data processor and take the rate of change max D Δ t1,Δt2,…,Δtn,Δtn+1As a temperature rate-of-change threshold; in the next stage, if the temperature change rate of the temperature acquisition points with the quantity exceeding 80 percent is higher than the threshold value within the specified continuous acquisition time, immediately alarming and controlling the first driving mechanism, the second driving mechanism and the fan to start;
(2) and when the temperature of the battery is higher than a preset temperature threshold value and/or a characteristic gas signal, a smoke signal and a flame signal are detected, immediately giving an alarm.
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| CN202110259596.7A CN112964305A (en) | 2021-03-10 | 2021-03-10 | Lithium ion energy storage battery fire on-line monitoring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114628807A (en) * | 2022-03-17 | 2022-06-14 | 哈尔滨工程大学 | Power battery pack and exhaust and heat dissipation control method thereof |
| CN117309066A (en) * | 2023-11-29 | 2023-12-29 | 珠海科创储能科技有限公司 | Energy storage cabinet monitoring system, method and device, storage medium and electronic equipment |
-
2021
- 2021-03-10 CN CN202110259596.7A patent/CN112964305A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114628807A (en) * | 2022-03-17 | 2022-06-14 | 哈尔滨工程大学 | Power battery pack and exhaust and heat dissipation control method thereof |
| CN117309066A (en) * | 2023-11-29 | 2023-12-29 | 珠海科创储能科技有限公司 | Energy storage cabinet monitoring system, method and device, storage medium and electronic equipment |
| CN117309066B (en) * | 2023-11-29 | 2024-03-26 | 珠海科创储能科技有限公司 | Energy storage cabinet monitoring system, method and device, storage medium and electronic equipment |
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