CN110507928A - For the fine water mist fire-extinguishing system and extinguishing method of LiFePO4 energy-accumulating power station battery prefabricated cabin - Google Patents
For the fine water mist fire-extinguishing system and extinguishing method of LiFePO4 energy-accumulating power station battery prefabricated cabin Download PDFInfo
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- CN110507928A CN110507928A CN201910759520.3A CN201910759520A CN110507928A CN 110507928 A CN110507928 A CN 110507928A CN 201910759520 A CN201910759520 A CN 201910759520A CN 110507928 A CN110507928 A CN 110507928A
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- battery
- fire
- battery modules
- prefabricated cabin
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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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- 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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- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a kind of fine water mist fire-extinguishing systems and extinguishing method for LiFePO4 energy-accumulating power station battery prefabricated cabin, a fine mist spray head is respectively mounted in each battery modules in battery prefabricated cabin, all fine mist spray heads are connected to fine spray extinguisher by pipe network.System and method provided by the invention can effectively put out LiFePO4 energy-accumulating power station battery prefabricated cabin fire, and there is no the influence of any substance to battery modules not on fire in prefabricated cabin, processing can continue to use after restoring, and solve the problems, such as the security against fire for the new energy field of lithium battery application for being currently referred to as world-famous puzzle；Blow-off velocity is fast, and battery thermal runaway can effectively be inhibited to continue to occur, and avoids re-ignition.
Description
Technical field
The present invention relates to a kind of fine water mist fire-extinguishing system for LiFePO4 energy-accumulating power station battery prefabricated cabin and fire extinguishing sides
Method belongs to public-fire prevention.
Background technique
Ferric phosphate lithium cell has many advantages, such as that energy density is big, output voltage is high, has extended cycle life, and environmental pollution is small,
It is widely used in various electronic equipments, electric car and electrochemical energy storage.Wherein LiFePO4 energy-accumulating power station adds up installation amount
Just grow steadily, will be more than 2000MW to the year two thousand twenty installation amount, annual growth is close to 70%, once fire occurs, seriously endangers
Power supply reliability and safety, social influence and very harmful.And at present worldwide, there are no one kind effectively to flutter
Go out the extinguishing method of LiFePO4 energy-accumulating power station battery prefabricated cabin fire, a large amount of energy-accumulating power station battery prefabricated cabin fire in home and abroad
Example is exactly good proves.
The extinguishing method of home and abroad LiFePO4 energy-accumulating power station battery prefabricated cabin mainly uses gas extinguishing system at present,
Put out a fire in a manner of total flooding, and the extinguishing method, open fire can only be put out, can not inhibit ferric phosphate lithium cell thermal runaway after
Supervention is raw, and re-ignition can occur after a few minutes, and is detonation.The intensity of a fire is bigger, therefore this method cannot effectively put out LiFePO4 storage
It can power station battery prefabricated cabin fire.
Summary of the invention
Goal of the invention: in order to solve the prior art cannot effective Fire-fighting Problems, the present invention provides a kind of for LiFePO4
The fine water mist fire-extinguishing system and extinguishing method of energy-accumulating power station battery prefabricated cabin.
Technical solution: to achieve the above object, the technical solution adopted by the present invention are as follows:
A kind of fine water mist fire-extinguishing system for LiFePO4 energy-accumulating power station battery prefabricated cabin, it is each in battery prefabricated cabin
More than one fine mist spray head is respectively mounted in a battery modules, all fine mist spray heads are connected to fine mist fire-fighting by pipe network and fill
It sets；When fire extinguishing, all fine mist spray heads spurt water mists.
Specifically, the battery modules include battery modules shell, battery is arranged in battery modules shell；In battery mould
One side plate of assembly housing is provided with opening, other side plates of battery modules shell are provided with mesh areas；The top of the opening
Side is consistent with battery modules sheath top plate inner surface height, and the bottom edge of opening is not less than battery upper surface；The mesh areas across
The top margin of the entire width of affiliated side plate, mesh areas is lower than battery modules sheath top plate 15~20cm of inner surface, the bottom of mesh areas
Side is not less than battery upper surface；The fine mist spray head is protruded into from opening into battery modules shell, and fine mist spray head spurts
Direction is towards the region between battery upper surface and battery modules sheath top plate inner surface.
Specifically, distance of the battery upper surface apart from battery modules sheath top plate inner surface is more than or equal to 50cm, electricity
Distance of the pond side surface apart from battery modules shell side wall inner surfaces is more than or equal to 20cm, and the percent opening of mesh areas is 20~
30%.
Compared with the existing technology, we have carried out opening up opening to existing battery modules shell and punching forms mesh areas
The processing in domain limits the spacing of battery and battery modules outer casing inner wall, other not to existing battery modules outside
Shell did multiprocessing.It is understood that in LiFePO4 energy-accumulating power station battery thermal runaway to catch fire have electrolyte splash the case where hair
It is raw, and with toxic, inflammable gas.Our line space designs to battery and battery modules outer casing inner wall, allow for electrolysis
The case where liquid splashes can be limited in battery modules shell, and without in the battery prefabricated cabin of splashing, while electrolyte is not yet
Therefore the mesh that blocking mesh area can be splashed to has minimum spacing to the spacing between battery and battery modules outer casing inner wall
Consider, by test of many times, when top spacing is greater than 50cm, side spacing is greater than 20cm, it is winged that almost just there is no electrolyte
It splashes to battery modules shell and is occurred with the case where exterior domain (i.e. in battery prefabricated cabin)；Certainly, this spacing is also not suitable for excessive,
The excessive size that will increase entire battery modules shell, increases the volume of battery prefabricated cabin indirectly, it is proposed that top spacing
In 20~36cm be in 50~80cm, side spacing it is proper, this spacing also compares to be ejected conducive to fine mist spray head
Water mists can be diffused into battery prefabricated cabin through mesh areas.
We are the designs for forbidding opening area for having 15~20cm of top, this is also to examine when designing mesh areas
To consider when electrolyte is splashed to battery modules cover top portion can generate certain rebound, if side is not blocked, readily penetrate through
Mesh areas is splashed to battery modules shell exterior region, affects electrolyte splashing situation being limited in battery modules interior of shell
Effect；By us to the electrolyte splashing situation observation for the battery that catches fire and test of many times, opening area effect is forbidden in design
Clearly and effectively.
When fire occurs for battery, toxic, inflammable gas can be accumulated in battery modules shell, and temperature is increased with gas
The increase of concentration will increase the probability that battery modules are exploded；Therefore we need to allow these gases that battery mould can be discharged
Assembly housing, while temperature fast lifting is avoided as far as possible；For this problem, we devise mesh area, allow gas can
Quickly discharge reduces battery heating rate；Meanwhile when we start fine mist spray head, water mists can also pass through mesh areas
It is diffused into battery prefabricated cabin, cools down to battery prefabricated cabin.Accordingly, we are that there are certain requirements to the percent opening of mesh areas
, cannot play greatly very much prevent electrolyte splash purpose, it is too small but be not easy to discharge gas；Feelings are discharged to gas by us
Condition observation and test of many times design the percent opening of opening area and (investigate in region, aperture fretwork area accounts for investigation for 20~30%
The percentage of region cotton knot).
We can not design mesh areas on the side plate of opening, be the function of the breathing freely because side is already provided with opening
It can be very sufficient；In open area, the water mists of injection are less to be overflowed from the side for fine mist spray head setting simultaneously；
But this not says that mesh can not be arranged in one's respective area, and can be with reference to other regions setting mesh area；It is not recommended that getting out of the way
Mouth runs through entire side, allows for the case where electrolyte splashes.
Specifically, the fine mist spray head is flat fan structure, arc direction is provided with a row on fan-shaped curved surface
Nozzle is typically designed all nozzles and spurts direction in a plane, may further design the plane in battery upper surface
Within the scope of the 2cm up and down of battery modules sheath top plate inner surface middle layer.Using the fine mist spray head, generally in each battery
One fine mist spray head is installed in module shell.
Relative to now common round spray head, we devise fine mist spray head, are on the one hand to reduce entire thin
The thickness of water mist spraying head can smoothly be mounted on battery modules to the change of existing battery modules shell less
In shell, row's nozzle on the other hand, which is arranged, along camber line also can allow water mists to be covered with battery modules housing interior volume rapidly,
What it was ejected is to have certain thickness covering of the fan water mists.According to typical circular spray head, on the one hand, the water mists of ejection are to fall
Cone, most of water mists can be sprayed on battery modules outer casing inner wall, formed big droplet and water flow, lost going out for water mists
Fire action；On the other hand, it is not easy to be installed in battery modules.The design of fine mist spray head and its nozzle spray direction
Setting, the water mists for enabling it to generate are spread in battery modules shell rapidly, while being also easy to spread from mesh area
It goes out, reduces its water accumulating volume on battery, give a degree of protection to battery.About the standard of water mists, ginseng
Examine the related fire protection criteria in China.
A kind of thin water spray fire-extinguishing method for LiFePO4 energy-accumulating power station battery prefabricated cabin, includes the following steps:
(1) after battery modules any in battery prefabricated cabin are on fire, fine water mist fire-extinguishing system is opened, entire battery prefabricated cabin
Fine mist spray head in interior all battery modules spurts water mists, is put out a fire with topical application fire-fighting mode, is on the one hand flutterred
Go out battery modules fire on fire, on the other hand carries out cooling protection to battery modules not on fire, prevents thermal runaway and fire spread；
(2) after open fire is put out, fine mist spray head persistently spurts water mists, on the one hand persistently thermal runaway is inhibited to prevent re-ignition,
Another aspect water mists can diffuse in battery prefabricated cabin, with total flooding application fire-fighting mode to its in entire battery prefabricated cabin
It puts out a fire or inhibits thermal runaway in his region；
(3) after the completion of putting out a fire, fine water mist fire-extinguishing system is closed, fine water mist fire-extinguishing system resets stand-by.
The utility model has the advantages that a kind of fine mist fire-fighting system for LiFePO4 energy-accumulating power station battery prefabricated cabin provided by the invention
System and extinguishing method, can effectively put out LiFePO4 energy-accumulating power station battery prefabricated cabin fire, and to not on fire in prefabricated cabin
Battery modules can continue to use after not having the influence of any substance, processing to restore, and solve and be currently referred to as the new of world-famous puzzle
The security against fire problem of energy field of lithium battery application；Blow-off velocity is fast, and effectively battery modules thermal runaway is inhibited to continue to occur,
Avoid re-ignition.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of battery modules；
Fig. 3 is the schematic perspective view of battery modules shell (top plate is not drawn into)；
Fig. 4 is fine mist spray head and its water mists overlooking structure diagram being blown off；
Fig. 5 is the side structure schematic view of fine mist spray head；
It include: 1- battery prefabricated cabin in figure；2- fine water mist fire-extinguishing system pipe network；3- battery modules；4- opening；5- mesh
Area；6- fine mist spray head；6-1- nozzle；6-2- pipe network connector；The water mists that 6-3- fine mist spray head is blown off.
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
It is as shown in Figure 1 a kind of fine water mist fire-extinguishing system for LiFePO4 energy-accumulating power station battery prefabricated cabin, in battery
It is respectively mounted a fine mist spray head 6 in each battery modules 3 in prefabricated cabin 1, all fine mist spray heads 6 are connected to by pipe network
Fine spray extinguisher.
As shown in Figure 2,3, the battery modules 3 include battery modules shell, and battery is arranged in battery modules shell；In
One side plate of battery modules shell is provided with opening 4, other side plates of battery modules shell are provided with mesh areas 5；It is described
Opening 4 top margin it is consistent with battery modules sheath top plate inner surface height, be open 4 bottom edge be not less than battery upper surface；It is described
Mesh areas 5 across affiliated side plate entire width, the top margin of mesh areas 5 lower than battery modules sheath top plate inner surface 15~
The bottom edge of 20cm, mesh areas 5 are not less than battery upper surface；The fine mist spray head 6 is stretched from opening 4 into battery modules shell
Enter, fine mist spray head 6 spurts direction towards the region between battery upper surface and battery modules sheath top plate inner surface.It is described
Distance of the battery upper surface apart from battery modules sheath top plate inner surface is more than or equal to 50cm, battery side surface distance battery modules
The distance of shell side wall inner surfaces is more than or equal to 20cm, and the percent opening of mesh areas 5 is 25%.
As shown in Figure 4,5, the fine mist spray head 6 is flat fan structure, is arranged on fan-shaped curved surface along arc direction
There is row's nozzle a 6-1, all nozzle 6-1 to spurt direction in a plane, the plane is in battery upper surface and battery modules
Within the scope of the 2cm up and down of sheath top plate inner surface middle layer.Fine mist spray head 6 is gone out by pipe network connector 6-2 connection water mists
Fiery system pipe network 2, the water mists 6-3 that fine mist spray head 6 ejects are certain thickness covering of the fan water mists.
A kind of thin water spray fire-extinguishing method for LiFePO4 energy-accumulating power station battery prefabricated cabin 1, includes the following steps:
(1) after battery modules 3 any in battery prefabricated cabin 1 are on fire, fine water mist fire-extinguishing system is opened, and entire battery is prefabricated
Fine mist spray head 6 in cabin 1 in all battery modules 3 spurts water mists, is put out a fire with topical application fire-fighting mode, a side
3 fire of battery modules on fire is put out in face, is on the other hand carried out cooling protection to battery modules 3 not on fire, is prevented thermal runaway and fire
Calamity sprawling；
(2) after open fire is put out, fine mist spray head 6 persistently spurts water mists, on the one hand persistently thermal runaway is inhibited to prevent re-ignition,
Another aspect water mists can diffuse in battery prefabricated cabin 1, with total flooding application fire-fighting mode in entire battery prefabricated cabin 1
It is put out a fire or inhibits thermal runaway in other regions；
(3) after the completion of putting out a fire, fine water mist fire-extinguishing system is closed, fine water mist fire-extinguishing system resets stand-by.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (5)
1. a kind of fine water mist fire-extinguishing system for LiFePO4 energy-accumulating power station battery prefabricated cabin, it is characterised in that: pre- in battery
Fine mist spray head is mounted in cabin processed in each battery modules, all fine mist spray heads are connected to water mists by pipe network and go out
Fiery device.
2. the fine water mist fire-extinguishing system according to claim 1 for LiFePO4 energy-accumulating power station battery prefabricated cabin, special
Sign is: the battery modules include battery modules shell, and battery is arranged in battery modules shell；In battery modules shell
One side plate is provided with opening, other side plates of battery modules shell are provided with mesh areas；The top margin and battery of the opening
Module shell top plate inner surface height is consistent, and the bottom edge of opening is not less than battery upper surface；The mesh areas is across affiliated side plate
Entire width, the top margin of mesh areas is lower than battery modules sheath top plate 15~20cm of inner surface, and the bottom edge of mesh areas is not less than
Battery upper surface；The fine mist spray head is protruded into from opening into battery modules shell, and fine mist spray head spurts direction direction
Region between battery upper surface and battery modules sheath top plate inner surface.
3. the fine water mist fire-extinguishing system according to claim 2 for LiFePO4 energy-accumulating power station battery prefabricated cabin, special
Sign is: distance of the battery upper surface apart from battery modules sheath top plate inner surface is more than or equal to 50cm, battery side surface
Distance apart from battery modules shell side wall inner surfaces is more than or equal to 20cm, and the percent opening of mesh areas is 20~30%.
4. the fine water mist fire-extinguishing system according to claim 2 for LiFePO4 energy-accumulating power station battery prefabricated cabin, special
Sign is: the fine mist spray head is flat fan structure, and arc direction is provided with row's nozzle on fan-shaped curved surface.
5. a kind of thin water spray fire-extinguishing method for LiFePO4 energy-accumulating power station battery prefabricated cabin, it is characterised in that: including as follows
Step:
(1) after battery modules any in battery prefabricated cabin are on fire, fine water mist fire-extinguishing system is opened, institute in entire battery prefabricated cabin
There is the fine mist spray head in battery modules to spurt water mists, is put out a fire with topical application fire-fighting mode, on the one hand put out
On the other hand fiery battery modules fire carries out cooling protection to battery modules not on fire, prevents thermal runaway and fire spread；
(2) after open fire is put out, fine mist spray head persistently spurts water mists, on the one hand persistently thermal runaway is inhibited to prevent re-ignition, another
Aspect water mists can diffuse in battery prefabricated cabin, with total flooding application fire-fighting mode to other areas in entire battery prefabricated cabin
It is put out a fire or inhibits thermal runaway in domain；
(3) after the completion of putting out a fire, fine water mist fire-extinguishing system is closed, fine water mist fire-extinguishing system resets stand-by.
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| CN201910759520.3A CN110507928B (en) | 2019-08-16 | 2019-08-16 | Water mist fire extinguishing system and fire extinguishing method for battery prefabricated cabin of lithium iron phosphate energy storage power station |
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| CN201910759520.3A CN110507928B (en) | 2019-08-16 | 2019-08-16 | Water mist fire extinguishing system and fire extinguishing method for battery prefabricated cabin of lithium iron phosphate energy storage power station |
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Cited By (2)
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| CN110507928B (en) | 2023-05-12 |
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