CN116154331A - Lithium battery box, lithium battery cabinet and fire early warning control method thereof - Google Patents
Lithium battery box, lithium battery cabinet and fire early warning control method thereof Download PDFInfo
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- CN116154331A CN116154331A CN202310097475.6A CN202310097475A CN116154331A CN 116154331 A CN116154331 A CN 116154331A CN 202310097475 A CN202310097475 A CN 202310097475A CN 116154331 A CN116154331 A CN 116154331A
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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
- A62C31/02—Nozzles specially adapted for fire-extinguishing
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
- A62C37/10—Releasing means, e.g. electrically released
- A62C37/11—Releasing means, e.g. electrically released heat-sensitive
- A62C37/14—Releasing means, e.g. electrically released heat-sensitive with frangible vessels
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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
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/251—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for stationary devices, e.g. power plant buffering or backup power supplies
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Battery Mounting, Suspending (AREA)
Abstract
The invention is suitable for the lithium battery fire-fighting technology, and provides a lithium battery box, a lithium battery cabinet and a fire early warning control method thereof, wherein the lithium battery box comprises: the device comprises a BMU module cabin, a battery cell arranged in the battery cabin and an inner fire extinguishing module arranged at the top of the battery cabin; its lithium cell cabinet includes: a cabinet body; a plurality of lithium battery boxes arranged in the cabinet body; the external fire-fighting tank with pressure is arranged outside the cabinet body; the fire detection pipe is arranged in the cabinet body in a circulating manner, the high-temperature airflow or flame exhausted from the smoke outlet of the lithium battery box with fire is broken by the fire detection pipe above the smoke outlet, and the fire extinguishing agent with pressure in the outer fire control tank is sprayed from the broken part to the lithium battery box with fire. The alarm units at a plurality of positions provided by the invention sense the development of fire and timely transmit information, and control or delay the fire by means of the fire extinguishing structures arranged in different modules, thereby winning time for fire treatment, reducing loss and reducing accidents.
Description
Technical Field
The invention belongs to the technical field of lithium battery fire protection, and particularly relates to a lithium battery box, a lithium battery cabinet and a fire early warning control method thereof.
Background
As a typical chemical energy storage device, a lithium battery energy storage system is at risk of fire caused by thermal runaway of the battery, and the exothermic reaction of the lithium battery is the root cause of such fire accidents. When a thermal runaway accident occurs in a single lithium battery cell, severe exothermic reactions can occur, and if a large amount of heat generated by the exothermic reactions cannot be timely discharged or radiated, the thermal runaway accident can be induced in the adjacent lithium battery cells, so that a cascade-stage fire disaster dangerous case which is extremely difficult to extinguish is formed.
The fire-fighting scheme adopted by most of the lithium battery energy storage systems currently comprises the following steps: the smoke temperature sensing probe + (in the cabinet or the cabin) is provided with a fixed gas (fine water mist) pipeline, the fire extinguishing effect achieved by the scheme in the past accident case is not ideal, the smoke temperature sensing probe can find dangerous situations and trigger the pipeline to spray out fire extinguishing agent when a safety valve of a first accident cell is opened to release smoke, but because the fire extinguishing agent pipeline is arranged outside a battery box, the sprayed fire extinguishing agent only can cool the shell of the battery box and can not directly act on the accident cell, and the accident cell is likely to continuously burn and release all heat. And the pipeline which is arranged in the cabinet (cabin) in advance can only carry out diffuse type full-coverage injection on the whole cabinet (or the whole cabin), most of the fire extinguishing agent with limited capacity is wasted on the battery box which is not out of control, and only a small part of the fire extinguishing agent can carry out fire extinguishing and cooling effects on the accident battery box in a targeted manner.
Disclosure of Invention
The invention provides a lithium battery box, a lithium battery cabinet and a fire early warning control method thereof, and aims to solve the problems that a fire extinguishing unit in a battery module box cannot suppress a fire at the first time in the initial stage of the fire and cannot spray fire extinguishing agent in a targeted manner in the battery module box when the fire occurs.
The present invention is achieved in one aspect, the present invention provides a lithium battery case comprising:
a BMU module;
a battery compartment;
the battery cell is arranged in the battery compartment;
the battery compartment top is equipped with interior fire extinguishing module, its characterized in that, interior fire extinguishing module includes perfluoro-hexanone fire extinguishing unit, aerosol fire extinguishing unit and locates the trigger lead wire of battery electricity core top, perfluoro-hexanone fire extinguishing unit and aerosol fire extinguishing unit are connected with the trigger lead wire, when the extremely rapid violent release heat of battery electricity core thermal runaway, trigger lead wire is triggered by high temperature gas or thermal flame, perfluoro-hexanone fire extinguishing unit and aerosol fire extinguishing unit spray extinguishing agent to battery compartment in fast, carry out rapid cooling and consume the combustion factor and restrain the diffusion of burning to the electric core in the thermal runaway.
Preferably, the battery compartment comprises:
an upper cover and a base;
flame gathering device on the upper cover;
an air inlet passage arranged on the base;
the trigger lead of the inner fire extinguishing module is arranged on the inner side of the top of the upper cover, and the flame gathering device gathers heat generated by the battery cell to the trigger lead.
Preferably, the flame collecting device comprises a flame collecting plate arranged between the top of the upper cover and the side walls, so that an arc-shaped dome which is contracted upwards is formed on the inner side of the top of the battery compartment, the inner fire extinguishing module is fixed on the inner side of the upper cover and is arranged between the two side wall flame collecting plates, and hot air and flame generated in the battery compartment flow along the flame collecting plates and are collected on the inner side of the top of the upper cover.
Preferably, the upper cover is provided with a smoke outlet, the smoke outlet is positioned above the BMU module cabin, the inner side of the top of the battery cabin upper cover is provided with a flame-guiding exhaust flue, the flame-guiding exhaust flue is communicated with the smoke outlet of the battery box, and hot air or flame in the battery cabin is discharged to the outside of the battery box through the flame-guiding exhaust flue.
Preferably, the inner fire extinguishing module is arranged on the inner side of the top of the upper cover of the battery compartment, and the spraying direction of the fire extinguishing agent of the inner fire extinguishing module is opposite to the exhausting direction of the flame-guiding exhaust flue.
Preferably, a partition plate is arranged between the BMU module cabin and the battery cabin, the air inlet passage penetrates through the partition plate and extends into the BMU module cabin, an air inlet hole is formed in the lower portion of the BMU module cabin, the air inlet hole is perpendicular to the air inlet passage and communicated with the air inlet passage, an inner air inlet hole is formed in a section of the air inlet passage, located in the battery cabin, of the air inlet passage, and external air of the lithium battery box enters the air inlet passage through the air inlet hole and then enters the bottom of the battery cabin through the inner air inlet hole along the air inlet passage.
Preferably, the trigger lead is made of a thermosensitive wire, and the thermosensitive wire can be triggered by open fire or high-temperature air flow.
In another aspect, the present invention provides a lithium battery cabinet including the above lithium battery box, comprising:
a cabinet body;
a plurality of lithium battery boxes arranged in the cabinet body;
the fire probe pipe is arranged above smoke outlets of different lithium battery boxes in a serpentine and reciprocating manner;
the external fire-fighting tank is arranged outside the cabinet body and provided with pressure;
the fire extinguishing device comprises an outer fire extinguishing tank, a fire detecting pipe, a battery box smoke outlet, a fire detecting pipe and a fire extinguishing agent spraying pipe, wherein the outer fire extinguishing tank is communicated with the fire detecting pipe, when one or more lithium battery boxes are in fire, the fire detecting pipe is forced to break by the high temperature of the battery box smoke outlet, and the fire extinguishing agent in the outer fire extinguishing tank is sprayed from the broken part to the lithium battery boxes in fire.
Preferably, the cabinet body is internally provided with a smoke detector, a temperature detector, a fire sound-light alarm and a fire control acquisition control I/O device.
In still another aspect, the present invention further provides a fire early warning control method of the lithium battery cabinet, including:
firstly, a smoke detector and a temperature detector arranged in a lithium battery cabinet find that the smoke concentration or the temperature in the cabinet is abnormal, an alarm signal is sent to a fire-fighting acquisition control I/O device, the fire-fighting acquisition control I/O device reports fire early warning to the outside, and a fire audible and visual alarm is excited at the same time;
step two, after the internal fire extinguishing module arranged in the lithium battery box starts spraying, the internal fire extinguishing module sends a spraying action signal to the fire control acquisition control I/O device, the fire control acquisition control I/O device reports a fire signal and an accident battery box number to the outside, and simultaneously cuts off a charging circuit of a battery pack where the battery cell is positioned and activates a fire sound-light alarm arranged at the top of the lithium battery box;
thirdly, a fire detector tube positioned above a smoke outlet of the lithium battery box is broken due to fire in the lithium battery box, the external fire-fighting tank sprays fire extinguishing agent to the lithium battery box with fire through the broken position of the fire detector tube and covers the fire extinguishing agent, and meanwhile, a pneumatic valve arranged on the external fire-fighting tank sends a spraying signal to a fire-fighting acquisition control I/O device; the fire control acquisition control I/O device reports fire signals and accident battery cabinet numbers to the outside, cuts off a charging circuit of a battery pack where the battery cell is located, and excites a fire sound-light alarm arranged at the top of the lithium battery cabinet.
Compared with the prior art, the embodiment of the application has the following main beneficial effects:
1. according to the lithium battery box, the lithium battery cabinet and the fire early warning control method thereof, provided by the invention, the perfluorinated hexanone fire extinguishing unit and the aerosol fire extinguishing unit are arranged in the battery compartment, so that fire control can be performed at the first time after a certain cell in the battery compartment is out of control, loss is reduced, and fire control capability is improved.
2. The lithium battery cabinet and the fire early warning control method thereof provided by the invention are controlled by burning and cracking early warning under a certain temperature through the fire probe pipe positioned right above the smoke outlet. After an abnormal fire occurs, the fire detecting tube breaks at high temperature and sprays fire extinguishing agent to specific fire generating equipment to control the fire at the fastest speed, the time of covering a fire area by the fire extinguishing agent is shortened, the control capability and control effect on the fire are effectively improved, the equipment is protected, and the lithium battery cabinet is protected in a targeted and comprehensive and effective mode through a box-cabinet dual fireproof fire extinguishing mode.
3. According to the lithium battery cabinet and the fire early warning control method thereof provided by the invention, the alarm units arranged at a plurality of positions sense the development of the fire and timely transmit information to the outside, so that the outside can conveniently carry out corresponding treatment in time, meanwhile, the fire is controlled or delayed by virtue of the fire extinguishing structures arranged at different modules, the time is won for fire treatment, and the loss and accidents are reduced to the greatest extent.
Drawings
Fig. 1 is a schematic diagram of a lithium battery box, a lithium battery cabinet and a fire early warning control method thereof.
Fig. 2 is a schematic diagram of the internal structure of a lithium battery box, a lithium battery cabinet and a fire early warning control method thereof.
Fig. 3 is a schematic diagram of a fire extinguishing module structure of a lithium battery box, a lithium battery cabinet and a fire early warning control method provided by the invention.
Fig. 4 is a schematic diagram of the internal structure of a lithium battery box, a lithium battery cabinet and a fire early warning control method thereof.
Fig. 5 is a schematic diagram of an air inlet channel structure of a lithium battery box, a lithium battery cabinet and a fire early warning control method thereof.
Fig. 6 is a schematic diagram of an internal air inlet hole structure of a lithium battery box, a lithium battery cabinet and a fire early warning control method provided by the invention.
Fig. 7 is a schematic diagram of a fire detection tube structure of a lithium battery box, a lithium battery cabinet and a fire early warning control method provided by the invention.
Fig. 8 is a schematic diagram of a lithium battery box, a lithium battery cabinet and a fire early warning control method thereof.
Fig. 9 is a control flow chart of a fire early warning control method of a lithium battery box, a lithium battery cabinet and a fire early warning control method of the lithium battery cabinet.
Reference numerals: a lithium battery case 100; BMU module 110; a battery compartment 120; an upper cover 121; flame plates 1211; an air inlet duct 1221; a base 122; an air inlet duct 1221; an air inlet 1222; an inner air inlet 1223; a smoke outlet 130, an internal fire suppression module 140; a perfluoro-hexanone fire extinguishing unit 141; an aerosol fire extinguishing unit 142; trigger lead 143; a partition 150; a battery cell 160; flame-induced exhaust stack 170; a cabinet 210; an alarm detection device 220; fire acquisition control I/O device 221; smoke detector 222; a temperature sensing detector 223; a fire audible and visual alarm 224; a fire probe 300; an outer fire tank 400; and a control room 500.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
An embodiment of the present invention provides a lithium battery box 100, as shown in fig. 1 to 6, where the lithium battery box 100 includes:
a battery compartment 120;
and a battery cell 160 disposed within the battery compartment 120.
Wherein the BMU is a battery management unit (BATTERY MANAGEMENT UNIT). As shown in fig. 2 and 3, an internal fire extinguishing module 140 is disposed at the top of the battery compartment 120, and the internal fire extinguishing module 140 includes a perfluorinated hexanone fire extinguishing unit 141, an aerosol fire extinguishing unit 142, and a trigger lead 143. The perfluorinated hexanone fire extinguishing unit 141 and the aerosol fire extinguishing unit 142 are connected with a trigger lead 143 arranged above the battery cell 160.
In this embodiment, the BMU module 110 has functions of collecting the voltage and the temperature of the battery cell and the electrode post of the battery cell, balancing the capacity level of the battery cell and reporting information to the upper level BCU (Battery Cluster Unit). The BCU is responsible for the opening and closing of the charge and discharge circuit of the lithium battery box 100, both of which are known in the art.
As shown in fig. 4, in this embodiment, the battery compartment 120 includes an upper cover 121 and a base 122, the battery cell 160 is fixed on the base 122, and a cell safety valve is disposed on the battery cell 160. The upper cover 121 is provided with a smoke outlet 130, and the smoke outlet 130 is located above the BMU module 110. The inner side of the top of the upper cover 121 of the battery compartment 120 is provided with a flame-guiding and exhausting flue 170, the flame-guiding and exhausting flue 170 is communicated with the smoke outlet 130, and hot air or flame in the battery compartment 120 is discharged to the outside of the lithium battery box 100 through the flame-guiding and exhausting flue 170. Preferably, the inner fire extinguishing module 140 is disposed inside the top of the upper cover 121 of the battery compartment 120, and the spraying direction of the fire extinguishing agent of the inner fire extinguishing module 140 is opposite to the exhausting direction of the flame-induced exhaust stack 170.
In this embodiment, the trigger lead 143 is made of a heat sensitive wire, and the trigger lead 143 is disposed inside the top of the upper cover 121 by a fixing ring and hung above the cell safety valve of the battery cell 160. When the battery cell 160 is in thermal runaway, and the generated flame temperature reaches 170+/-10 ℃, after the triggering leads 143 arranged at the nozzles of the perfluorinated hexanone fire extinguishing unit 141 and the aerosol fire extinguishing unit 142 are ignited due to burning, the perfluorinated hexanone fire extinguishing unit 141 and the aerosol fire extinguishing unit 142 can immediately spray the perfluorinated hexanone fire extinguishing agent and the aerosol fire extinguishing agent into the battery compartment 120 to perform fire extinguishing actions, and the fire of the battery cell 160 is controlled in time, so that further influence is avoided.
In a further preferred embodiment of the present invention, a partition 150 is provided between the BMU module compartment 110 and the battery compartment 120. The perfluorinated hexanone fire extinguishing unit 141 is filled with perfluorinated hexanone fire extinguishing agent, the perfluorinated hexanone fire extinguishing unit 141 is arranged between the BMU module cabin 110 and the battery cabin 120, and the aerosol fire extinguishing unit 142 is arranged in the battery cabin 120 and contains 10g of aerosol fire extinguishing agent. The partition 150 is provided with a channel for communicating the BMU module 110 and the battery compartment 120, and the channel is provided with the flame-guiding exhaust flue 170. The channels communicate with a smoke vent 130 provided at the top of the BMU module 110.
In this embodiment, the flame-induced exhaust stack 170 is used to provide pressure relief to the battery compartment 120 and to vent the hot gas flow in the event of a cell failure. The flame extraction vent 170 extends from behind the inner fire suppression module 140 into the battery compartment 120 to reduce the escape of fire suppressant during the fire suppression process. The perfluor hexanone fire extinguishing unit 141 and the aerosol fire extinguishing unit 142 are both in the prior art, and the perfluor hexanone fire extinguishing unit 141 and the aerosol fire extinguishing unit 142 are arranged in the battery compartment 120, so that fire control is performed at the first time after thermal runaway of the battery compartment 120 occurs, and loss is reduced.
In a further preferred embodiment of the present invention, as shown in fig. 5-6, the bottom corners of the base 122 are respectively provided with an air inlet passage 1221 with a hollow interior, the air inlet passages 1221 extend into the BMU module compartment 110 through the partition plate 150, the lower part of the BMU module compartment 110 is provided with an air inlet 1222 perpendicular to the air inlet passages 1221, the air inlet 1222 is communicated with the air inlet passages 1221, the air inlet passages 1221 are provided with an inner air inlet 1223 at a section of the battery compartment, and the external air of the lithium battery box 100 enters the air inlet passages 1221 through the air inlet passages 1222 and then enters the bottom of the battery compartment 120 through the inner air inlet holes 1223 along the air inlet passages 1221.
In this embodiment, the number of the air inlet passages 1221 is two, and the air inlet holes 1222 arranged at the bottom corner of the base 122 and at one side of the BMU module compartment 110 introduce air into the air inlet passages 1221, and then into the battery compartment 120 through the air inlet holes 1223 arranged at one side of the battery compartment 120; and forms an air flow circulation with the smoke outlet 130 provided on the upper cover 121.
As a preferred implementation manner in this embodiment, a flame-collecting plate 1211 is disposed between the top and the side wall of the upper cover 121, and the flame-collecting plate 1211 forms an arc-shaped dome that is contracted upwards inside the top of the battery compartment. The hot air and flame generated in the battery compartment 120 will flow along the flame trap plate 1211 and collect inside the top of the upper cover. The inner fire extinguishing module 140 is disposed between the flame collecting plates 1211, effectively guiding heat inside the battery compartment 120 to the inner fire extinguishing module 140, so that the inner fire extinguishing module 140 rapidly enters a fire extinguishing state.
The embodiment of the invention also provides a lithium battery cabinet comprising the lithium battery box, as shown in fig. 1-8, the lithium battery cabinet comprises:
a cabinet 210;
a plurality of lithium battery cases 100 placed inside the cabinet 210;
an outer fire-fighting pot 400 provided outside the cabinet 210;
the fire probe 300 is arranged in a serpentine shape to and fro above the smoke outlets 130 of the different lithium battery boxes 100;
as shown in fig. 7 to 8, a plurality of layers of supporting plates are provided in the cabinet 210, the lithium battery box 100 is assembled on the supporting plates, the fire detecting tube 300 is suspended above the lithium battery box 100 in a serpentine shape by a hook, and the cabinet 210 is in the prior art. When the high temperature reaches 160 ℃ ±10 ℃ through the smoke outlet 130 of the lithium battery box 100, the fire detecting tube 300 is broken, and the perfluorohexanone/heptafluoropropane gas stored in the external fire-fighting pot 400 immediately sprays the fire extinguishing agent from the broken part of the fire detecting tube 300 to the lithium battery box 100 where the fire occurs.
In this embodiment, the fire detecting tube 300 is made by using the prior art, and the sections of the fire detecting tube 300 located on the smoke outlets of different lithium battery boxes 100 sense the temperature condition of the smoke outlet of the lithium battery box 100, after an abnormal fire occurs, the fire detecting tube 300 of the corresponding section breaks at high temperature and sprays fire extinguishing agent to specific fire generating equipment at the fastest speed to control the fire, so that the fire is convenient to be treated for the first time, the time of covering the fire area by the fire extinguishing agent is shortened, the control capability and control effect on the fire are effectively improved, and the safety of the equipment is protected.
As a preferred implementation manner in this embodiment, the cabinet 210 is provided with an alarm detection device 220, where the alarm detection device 220 includes a smoke detector 222, a temperature detector 223, a fire audible and visual alarm 224, and a fire control acquisition control I/O device 221 (I/O means input/output).
The alarm detection device 220 is in the prior art, the fire-fighting acquisition control I/O device 221 is electrically connected with a pneumatic valve of the external fire-fighting tank 400, and when the external fire-fighting tank 400 starts the supply of fire extinguishing agent, the fire-fighting acquisition control I/O device 221 can timely acquire information and upload the information to the control room 500 outside the lithium battery box 100. At the same time, the charging circuit of the battery pack (cluster) where the battery cell is located is cut off, and the fire audible and visual alarm 224 arranged at the top of the lithium battery cabinet 100 is activated. The control room 500 is a workshop or factory floor equipment control total room, which coordinates the operation of the workshop or factory floor equipment to be an existing infrastructure equipment.
The lithium battery box 100 of the battery cabinet of the embodiment is provided with the internal fire extinguishing module 140, and when the contact temperature of the trigger lead in the lithium battery box 100 reaches 170 ℃ +/-10 ℃, the trigger lead 143 triggers the fluorohexanone fire extinguishing unit 141 and the aerosol fire extinguishing unit 142 to extinguish fire. After the fluorohexanone fire extinguishing unit 141 and the aerosol fire extinguishing unit 142 are started to extinguish fire, signals are sent to the fire-fighting acquisition control I/O device 221, the fire-fighting acquisition control I/O device 221 reports the signals to the control room 500, and meanwhile, a charging loop is cut off and a fire audible and visual alarm in the lithium battery cabinet is excited, so that a primary fireproof mode is formed in the lithium battery box 100, and the fire can be restrained for the first time at the initial stage of fire.
And the fire detecting tube 300 is arranged in the lithium battery cabinet, the external fire-fighting pot 400 is arranged outside the battery cabinet, when the primary fire prevention of the lithium battery box 100 fails or the flame of the battery cell in the box is extinguished and reburns, the fire detecting tube 300 at the corresponding position is broken when the temperature of the smoke outlet 130 reaches 160+/-10 ℃, and the perfluoroketone/heptafluoropropane gas sprayed at the broken position is sprayed against the lithium battery box 100 out of control. Through the dual fire prevention fire extinguishing mode of "case-cabinet" for form the second grade fire prevention mode at the battery cabinet, formed the pertinence and comprehensive effectual protection to the lithium cell cabinet.
The embodiment of the invention also provides a fire early warning control method of the lithium battery cabinet, as shown in fig. 1-9, comprising the following steps:
step one, a smoke detector 222 and a temperature detector 223 arranged in a lithium battery cabinet find that the smoke concentration or the temperature in the lithium battery cabinet is abnormal, an alarm signal is sent to a fire-fighting acquisition control I/O device 221, the fire-fighting acquisition control I/O device 221 reports fire early warning to the outside, and a fire audible and visual alarm 224 is excited;
step two, after the internal fire extinguishing module 140 arranged in the lithium battery box 100 starts spraying, the internal fire extinguishing module 140 sends a spraying action signal to the fire control acquisition control I/O device 221, the fire control acquisition control I/O device 221 reports a fire signal and an accident battery box number to the outside, and simultaneously cuts off a charging circuit of a battery pack where the battery cell 160 is positioned, and excites a fire sound and light alarm 224 on the lithium battery cabinet;
third, fire in the lithium battery box 100 causes the fire detection tube 300 positioned above the smoke outlet 130 of the lithium battery box 100 to break, the outer fire-fighting pot 400 with pressure sprays fire extinguishing agent to the lithium battery box 100 with fire through the broken part of the fire detection tube 300 and covers the fire extinguishing agent, and meanwhile, a pneumatic valve arranged on the outer fire-fighting pot 400 sends a spraying signal to the fire-fighting acquisition control I/O device 221; the fire control collection control I/O device 221 reports fire signals and accident battery cabinet numbers to the outside, and simultaneously cuts off the charging circuit of the battery pack where the lithium battery box 100 is located, and activates the fire audible and visual alarm 224 on the lithium battery cabinet. When the different levels of alarm are performed in the above steps, the corresponding fire audible and visual alarm 224 gradually increases the audible and visual alarm frequency.
In this embodiment, the outside world may be the host computer or the control room 500. The fire early warning control method of the lithium battery cabinet is combined with the alarm unit through the self fire extinguishing structure; through setting up in the alarm unit perception condition of a fire development of many places in time to external transmission information, be convenient for external in time carry out corresponding processing, control or hysteresis the condition of a fire with the help of setting up in the extinguishment structure of different modules simultaneously, win time for the condition of a fire is handled, reduce the loss in the furthest.
It should be noted that, for simplicity of description, the foregoing embodiments are all illustrated as a series of acts, but it should be understood by those skilled in the art that the present invention is not limited by the order of acts, as some steps may be performed in other order or concurrently in accordance with the present invention. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present invention.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention. It will be apparent that the described embodiments are merely some, but not all, embodiments of the invention. Based on these embodiments, all other embodiments that may be obtained by one of ordinary skill in the art without inventive effort are within the scope of the invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art may still combine, add or delete features of the embodiments of the present invention or make other adjustments according to circumstances without any conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present invention, which also falls within the scope of the present invention.
Claims (10)
1. A lithium battery case, comprising:
a BMU module;
a battery compartment;
the battery cell is arranged in the battery compartment;
the battery compartment top is equipped with interior fire extinguishing module, its characterized in that, interior fire extinguishing module includes perfluoro-hexanone fire extinguishing unit, aerosol fire extinguishing unit and locates the trigger lead wire of battery electricity core top, perfluoro-hexanone fire extinguishing unit and aerosol fire extinguishing unit are connected with the trigger lead wire, when battery electricity core thermal runaway extremely releases heat fast violently, trigger lead wire is triggered by high temperature gas or thermal flame, perfluoro-hexanone fire extinguishing unit and aerosol fire extinguishing unit spray extinguishing agent to battery compartment in.
2. The lithium battery compartment of claim 1, wherein the battery compartment comprises:
an upper cover and a base;
flame gathering device on the upper cover;
an air inlet passage arranged on the base;
the trigger lead of the inner fire extinguishing module is arranged on the inner side of the top of the upper cover, and the flame gathering device gathers heat generated by the battery cell to the trigger lead.
3. The lithium battery box according to claim 2, wherein the flame collecting means comprises a flame collecting plate disposed between the top and the side walls of the upper cover, the inner fire extinguishing module is fixed inside the upper cover and disposed between the flame collecting plates of the side walls, and hot air and flames generated in the battery compartment flow along the flame collecting plate and are collected inside the top of the upper cover.
4. A lithium battery box according to claim 3, wherein the upper cover is provided with a smoke outlet, the smoke outlet is located above the BMU module cabin, a flame-guiding exhaust flue is arranged on the inner side of the upper part of the upper cover of the battery cabin, the flame-guiding exhaust flue is communicated with the smoke outlet of the battery box, and hot air or flame in the battery cabin is discharged to the outside of the battery box through the flame-guiding exhaust flue.
5. The lithium battery box according to claim 4, wherein the inner fire extinguishing module is arranged on the inner side of the top of the upper cover of the battery compartment, and the spraying direction of the fire extinguishing agent of the inner fire extinguishing module is opposite to the exhausting direction of the flame-guiding exhaust flue.
6. The lithium battery box according to claim 2, wherein a partition plate is arranged between the BMU module cabin and the battery cabin, the air inlet passage penetrates through the partition plate and extends into the BMU module cabin, an air inlet hole is formed in the lower portion of the BMU module cabin, the air inlet hole is perpendicular to the air inlet passage and is communicated with the air inlet passage, an inner air inlet hole is formed in a section of the air inlet passage located in the battery cabin, and air outside the lithium battery box enters the air inlet passage through the air inlet hole and then enters the bottom of the battery cabin through the inner air inlet hole along the air inlet passage.
7. The lithium battery box according to claim 1, wherein the trigger lead of the inner fire extinguishing module is made of a thermosensitive wire.
8. A lithium battery cabinet comprising the lithium battery box of any one of claims 4 to 7, characterized by comprising:
a cabinet body;
a plurality of lithium battery boxes arranged in the cabinet body;
the fire probe pipe is arranged above smoke outlets of different lithium battery boxes in a serpentine and reciprocating manner;
the external fire-fighting tank is arranged outside the cabinet body;
wherein, outer fire control jar and fire detection tube intercommunication when one or more lithium cell case takes place the condition of a fire, and the fire detection tube of its top breaks to spray the fire extinguishing agent in the outer fire control jar from the damage to the lithium cell case that takes place the condition of a fire.
9. The lithium battery cabinet according to claim 8, wherein a smoke detector, a temperature detector, a fire audible and visual alarm and a fire control acquisition control I/O device are arranged in the cabinet body.
10. The fire early warning control method of the lithium battery cabinet according to claim 9, comprising:
firstly, a smoke detector and a temperature detector arranged in a lithium battery cabinet find that the smoke concentration or the temperature in the cabinet is abnormal, an alarm signal is sent to a fire-fighting acquisition control I/O device, the fire-fighting acquisition control I/O device reports fire early warning to the outside, and a fire audible and visual alarm is excited at the same time;
after the internal fire extinguishing module arranged in the lithium battery box starts spraying, the internal fire extinguishing module sends a spraying action signal to the fire control acquisition control I/O device, the fire control acquisition control I/O device reports a fire signal and an accident battery box number to the outside, and meanwhile, a charging circuit of a battery pack where the battery cell is positioned is cut off, so that a fire sound-light alarm is excited;
thirdly, a fire detector tube positioned above a smoke outlet of the lithium battery box is broken due to fire in the lithium battery box, the external fire-fighting tank sprays fire extinguishing agent to the lithium battery box with fire through the broken position of the fire detector tube and covers the fire extinguishing agent, and meanwhile, a pneumatic valve arranged on the external fire-fighting tank sends a spraying signal to a fire-fighting acquisition control I/O device; the fire control acquisition control I/O device reports fire signals and accident battery cabinet numbers to the outside, and simultaneously cuts off a charging circuit of a battery pack where the battery cell is positioned, so as to excite the fire audible and visual alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310097475.6A CN116154331A (en) | 2023-02-10 | 2023-02-10 | Lithium battery box, lithium battery cabinet and fire early warning control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310097475.6A CN116154331A (en) | 2023-02-10 | 2023-02-10 | Lithium battery box, lithium battery cabinet and fire early warning control method thereof |
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| CN116154331A true CN116154331A (en) | 2023-05-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310097475.6A Pending CN116154331A (en) | 2023-02-10 | 2023-02-10 | Lithium battery box, lithium battery cabinet and fire early warning control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117899402A (en) * | 2024-03-20 | 2024-04-19 | 福建时代星云科技有限公司 | Battery compartment, battery compartment fire control system and method |
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- 2023-02-10 CN CN202310097475.6A patent/CN116154331A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117899402A (en) * | 2024-03-20 | 2024-04-19 | 福建时代星云科技有限公司 | Battery compartment, battery compartment fire control system and method |
| CN117899402B (en) * | 2024-03-20 | 2024-05-28 | 福建时代星云科技有限公司 | Battery compartment, battery compartment fire control system and method |
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