CN110393875A - Lithium ion battery firebreak device - Google Patents
Lithium ion battery firebreak device Download PDFInfo
- Publication number
- CN110393875A CN110393875A CN201910717059.5A CN201910717059A CN110393875A CN 110393875 A CN110393875 A CN 110393875A CN 201910717059 A CN201910717059 A CN 201910717059A CN 110393875 A CN110393875 A CN 110393875A
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- China
- Prior art keywords
- fire
- fire relief
- liquid
- eruption
- lithium ion
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 52
- 239000007788 liquid Substances 0.000 claims abstract description 72
- 239000000178 monomer Substances 0.000 claims description 61
- 230000000087 stabilizing effect Effects 0.000 claims description 18
- 230000002745 absorbent Effects 0.000 claims description 5
- 239000002250 absorbent Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 1
- 230000008676 import Effects 0.000 abstract description 3
- 230000007480 spreading Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 64
- 239000000835 fiber Substances 0.000 description 47
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 22
- 239000000203 mixture Substances 0.000 description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 12
- 238000010586 diagram Methods 0.000 description 12
- 239000001301 oxygen Substances 0.000 description 12
- 229910052760 oxygen Inorganic materials 0.000 description 12
- 239000001257 hydrogen Substances 0.000 description 11
- 229910052739 hydrogen Inorganic materials 0.000 description 11
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 10
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 7
- 239000002131 composite material Substances 0.000 description 6
- 235000012239 silicon dioxide Nutrition 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000004880 explosion Methods 0.000 description 4
- 150000002431 hydrogen Chemical class 0.000 description 4
- 230000001535 kindling effect Effects 0.000 description 4
- 239000010453 quartz Substances 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- VIKNJXKGJWUCNN-XGXHKTLJSA-N norethisterone Chemical compound O=C1CC[C@@H]2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 VIKNJXKGJWUCNN-XGXHKTLJSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 150000001345 alkine derivatives Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 239000002383 tung oil Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/04—Removing or cutting-off the supply of inflammable material
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/06—Physical fire-barriers
-
- 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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
-
- 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
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The application provides a kind of lithium ion battery firebreak device.The eruption that the battery cell occurs to discharge when thermal runaway is introduced in the fluid-tight case by pipeline.At this point, being placed with the liquid in the fluid-tight case.Heat fire-fighting principle can be absorbed according to liquid, eruption imports in the liquid, and the heat that the liquid can discharge eruption absorbs heat.To which the liquid cools down eruption, reduces the temperature of eruption, reduces condition element on fire of burning, and then play the role of preventing propagation of flame.Meanwhile when the flame and the liquid that eruption generates contact, puts out a fire at branch to flame in the liquid containing fire extinguishing, prevent fire spreading.
Description
Technical field
This application involves field of lithium ion battery, more particularly to a kind of lithium ion battery firebreak device.
Background technique
In recent years, the market share of electric car is promoted steadily.There is lithium ion battery high voltage, high-energy-density, length to follow
The excellent performances such as ring service life, no pollution to the environment by the highest attention of ev industry, and obtain certain application.So
And combustion mixture, such as H can be generated during lithium ion battery thermal runaway2、CO、CH4Deng, and accumulate in inside battery.In electricity
After reaching certain pressure boundary inside pond, safety valve is opened, and combustion mixture is discharged into battery external world ring as battery erupts
In border, it is easy to cause fire.To improve lithium ion battery security, carry out both at home and abroad related to lithium ion battery fire safety evaluating
Research work.
Traditional lithium ion battery improves the safety of lithium ion battery by setting cracking pressure.Such as: work as battery
Safety valve is opened when internal gas pressure reaches certain value, and gas is discharged to external environment, to avoid causing battery explosion.When soft
When gas pressure in packet reaches certain value, the lower Soft Roll part variation of allowable pressure is broken through by gas and releases battery spray
Object is sent out, to avoid causing battery explosion.At this point, when the pressure of traditional lithium ion battery box house reaches certain value, peace
Full valve opening causes air to enter monomer inside or box house, is easy so that eruption and air contact postignition, and draw
Polot flame sprawling, so that the safety of conventional lithium ion battery cabinet is relatively low.
Summary of the invention
Based on this, it is necessary to cause to erupt for after the safety valve unlatching of conventional lithium ion battery cabinet or after Soft Roll rupture
Object and air contact postignition and cause propagation of flame, so that the problem that safety is relatively low, providing one kind can significantly be promoted
The lithium ion battery firebreak device of lithium ion battery fire safety.
It includes Battery case, cabinet safety valve and liquid back-fire relief knot that the application, which provides a kind of lithium ion battery firebreak device,
Structure.The Battery case surrounds to form first storage space.Multiple battery cells are placed in first storage space
Or battery pack.The Battery case is provided with cabinet gas outlet.The cabinet safety valve is set to the cabinet gas outlet.It is described
Liquid back-fire relief structure includes fluid-tight case.The fluid-tight case is connect with the cabinet safety valve pipeline.The fluid-tight luggage encloses to be formed
One liquid containing sky.It is placed with liquid in the liquid-retaining volume, after the multiple battery cell thermal runaway of cooling
The eruption of release, with the propagation of flame for preventing eruption from generating.
The application provides a kind of above-mentioned lithium ion battery firebreak device, and the spray discharged when thermal runaway occurs for the battery cell
Hair object is introduced in the fluid-tight case by pipeline.At this point, being placed with the liquid in the fluid-tight case.It can be inhaled according to liquid
Heat fire-fighting principle is received, eruption imports in the liquid, and the heat that the liquid 252 can discharge eruption absorbs heat.
To, the liquid cools down eruption, reduces the temperature of eruption, reduce condition element on fire of burning, into
And play the role of preventing propagation of flame.Meanwhile when the flame and the liquid that eruption generates contact, contain in the liquid
There is fire extinguishing to put out a fire at branch to flame, prevents fire spreading.
Detailed description of the invention
Fig. 1 is the Integral connection structure schematic diagram of lithium ion battery firebreak device in one embodiment provided by the present application；
Fig. 2 is the whole of the lithium ion battery firebreak device containing monomer back-fire relief structure in one embodiment provided by the present application
Attachment structure schematic diagram；
Fig. 3 is the structural schematic diagram of monomer back-fire relief structure provided by the present application；
Fig. 4 is the hatch frame schematic diagram of the monomer back-fire relief structure in Fig. 3 provided by the present application；
Fig. 5 is the structural representation of the monomer back-fire relief structure containing the second fire-proof plate in one embodiment provided by the present application
Figure；
Fig. 6 is the hatch frame schematic diagram of monomer back-fire relief structure in Fig. 5 provided by the present application；
Fig. 7 is the structural representation of the monomer back-fire relief structure containing the second fire-proof plate in another embodiment provided by the present application
Figure；
Fig. 8 is that monomer back-fire relief shell section is rectangular structural schematic diagram in one embodiment provided by the present application；
Fig. 9 is that monomer back-fire relief shell section is rectangular structural schematic diagram in another embodiment provided by the present application；
Figure 10 is the lithium ion battery firebreak device containing battery modules shell in one embodiment provided by the present application
Integral connection structure schematic diagram；
Figure 11 is the lithium ion battery firebreak device containing battery modules shell in another embodiment provided by the present application
Integral connection structure schematic diagram；
Figure 12 is the Integral connection structure of the lithium ion battery firebreak device provided by the present application containing mould group back-fire relief structure
Schematic diagram；
Figure 13 is the lithium ion battery firebreak device containing fiber back-fire relief structure in one embodiment provided by the present application
Integral connection structure schematic diagram；
Figure 14 is the lithium ion battery firebreak device containing fiber back-fire relief structure in another embodiment provided by the present application
Integral connection structure schematic diagram.
Description of symbols
Lithium ion battery firebreak device 100, Battery case 10, cabinet safety valve 120, liquid back-fire relief structure 20, first are received
Receive space 110,320 battery pack 80 of battery cell, cabinet gas outlet 121, fluid-tight case 250, liquid-retaining volume 251, liquid
252, exhaust pipe 230, pressure stabilizing cavity 220, check valve 240, drain valve 253, first pipe 310, the first gas rail 330, monomer peace
Full valve 321, monomer back-fire relief structure 40, monomer back-fire relief structure inlet 410, monomer back-fire relief structure export 420, monomer back-fire relief shell
430, the first fire-proof plate 440, back-fire relief space 431, opening the 4422, second fire aisle 442, second resistance of back-fire relief part 4421, second
Fiery plate 450, support frame 451, third opening 4431, third fire aisle 443.
Specific embodiment
In order to which the objects, technical solutions and advantages of the application are more clearly understood, by the following examples, and combine attached
Figure, is further elaborated the application.It should be appreciated that specific embodiment described herein is only to explain this Shen
Please, it is not used to limit the application.
It is herein component institute serialization number itself, such as " first ", " second " etc., is only used for distinguishing described object,
Without any sequence or art-recognized meanings.And " connection ", " connection " described in the application, unless otherwise instructed, include directly and
It is indirectly connected with (connection).In the description of the present application, it is to be understood that term " on ", "lower", "front", "rear", " left side ",
The orientation of the instructions such as " right side ", "vertical", "horizontal", "top", "bottom", "inner", "outside", " clockwise ", " counterclockwise " or position are closed
System indicates to be based on the orientation or positional relationship shown in the drawings, being merely for convenience of description the application and simplifying description
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For the limitation to the application.
In this application unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
Referring to Figure 1, it is safe including Battery case 10, cabinet to provide a kind of lithium ion battery firebreak device 100 by the application
Valve 120 and liquid back-fire relief structure 20.The Battery case 10, which surrounds, forms first storage space 110.Described first receives
It receives and is placed with multiple battery cells 320 or battery pack 80 in space 110.The Battery case 10 is provided with cabinet gas outlet 121.
The cabinet safety valve 120 is set to the cabinet gas outlet 121.The liquid back-fire relief structure 20 includes fluid-tight case 250.It is described
Fluid-tight case 250 is connect with 120 pipeline of cabinet safety valve.The fluid-tight case 250, which surrounds, forms a liquid-retaining volume
251.It is placed with liquid 252 in the liquid-retaining volume 251, to the multiple battery cell 320 of cooling or the battery
The eruption discharged after 80 thermal runaways is wrapped, with the propagation of flame for preventing eruption from generating.
It can be produced when the multiple battery cells 320 or the generation thermal runaway of the battery pack 80 in the Battery case 10
Raw mixing imflammable gas.After reaching certain pressure boundary inside the battery cell 320, the peace of the battery cell 320
Full valve can be opened, and combustion mixture is discharged into the Battery case 10 as battery erupts.Heat occurs for the battery pack 80
When out of control, release eruption can be ruptured.When pressure inside the Battery case 10 reaches certain value, the battery can be broken through
The cabinet safety valve 120 of cabinet 10, the cabinet safety valve 120 can be opened.At this point, the eruption of imflammable gas discharge it is past
Toward along with Mars or other high-temperature particle objects, flame can be easy to produce after contacting with oxygen.
The eruption that the battery cell 320 or the battery pack 80 occur to discharge when thermal runaway is introduced to institute by pipeline
It states in fluid-tight case 250.At this point, being placed with the liquid 252 in the fluid-tight case 250.Heat fire extinguishing can be absorbed according to liquid
Principle, eruption import in the liquid 252, and the heat that the liquid 252 can discharge eruption absorbs heat.To institute
It states liquid 252 to cool down eruption, reduces the temperature of eruption, reduce condition element on fire of burning, in turn
Play the role of preventing propagation of flame.Meanwhile when the flame and the liquid 252 that eruption generates contact, the liquid 252
In containing fire extinguishing put out a fire at branch to flame, prevent fire spreading.
Wherein, the liquid 252 can may be implemented to hinder for glycerol, tung oil, water or salt and the aqueous solution of calcium chloride etc.
The liquid of fiery function.The fluid-tight case 250 has enough mechanical strengths, compression resistance and characteristic resistant to high temperature.
In one embodiment, the liquid back-fire relief structure 20 further includes exhaust pipe 230 and pressure stabilizing cavity 220.It is described
Exhaust pipe 230 is set between the fluid-tight case 250 and the cabinet safety valve 120, to by the fluid-tight case 250 and institute
State the connection of cabinet safety valve 120.The pressure stabilizing cavity 220 be set to the exhaust pipe 230 and the cabinet safety valve 120 it
Between.Described 220 one end of pressure stabilizing cavity is connected to the exhaust pipe 230, and the pressure stabilizing cavity 220 is far from the exhaust pipe 230 1
End is connected to 120 pipeline of cabinet safety valve.And the diameter of the pressure stabilizing cavity 220 is greater than the diameter of the exhaust pipe 230,
To ensure that the pressure in the exhaust pipe 230 is stablized.Described 230 one end of exhaust pipe is connected to the pressure stabilizing cavity 220.Institute
230 other end of exhaust pipe is stated to connect and extended in the liquid 252 with the fluid-tight case 250.
Wherein, the exhaust pipe 230 and the pressure stabilizing cavity 220 have enough mechanical strengths, can resist explosion time
Pressure.The pressure stabilizing cavity 220 is arranged close to described 120 one end of cabinet safety valve.And the pressure stabilizing cavity 220 is pacified with the cabinet
120 seal for pipe joints of full valve connection, prevents eruption from leaking.Also, the pressure stabilizing cavity 220 and 120 pipeline of cabinet safety valve
When sealed connection, the inner diameter of pipeline is greater than the diameter of the cabinet safety valve 120, to by the cabinet safety valve 120
It is completely covered, avoids causing interference effect to the normally-open of cabinet safety valve 120.Meanwhile in the liquid back-fire relief knot
The sealed connection position of structure 20 is provided with high-temperature resistant seal ring, the temperature generated when being lost to avoid 320 heat of the battery cell compared with
Height damages connecting portion.
The number of the pressure stabilizing cavity 220 with no restrictions, can be set it is multiple, to prevent the burst pressure of eruption is excessive from making
It is splashed out at the liquid 252 in the fluid-tight case 250.The shape of the exhaust pipe 230 can connect shape for multiple U-tubes
At, or V-shape pipe connects to be formed.At this point, the eruption that the battery cell 320 occurs to discharge when thermal runaway flows through institute
It states pressure stabilizing cavity 220 and the exhaust pipe 230 enters in the liquid 252 of the fluid-tight case 250.
In one embodiment, the fluid-tight case 250 can be tightly connected with the exhaust pipe 230, place the liquid
Body 252 leaks outside.
In one embodiment, the lithium ion battery firebreak device 100 further includes check valve 240.The check valve 240
It is set in the exhaust pipe 230, to prevent the liquid 252 from flowing backward to the cabinet safety valve 120.
The check valve 240 is disposed in proximity in the exhaust pipe 230 of described 250 one end of fluid-tight case, to prevent
The liquid 252 flows backward to the cabinet safety valve 120.
In one embodiment, the lithium ion battery firebreak device 100 further includes drain valve 253.The drain valve 253
It is set to 250 bottom of fluid-tight case.
The drain valve 253 may be mounted at the position for needing drain line minimum in the fluid-tight case 250.When water level height
After sluicing line, the drain valve 253 can depressurize in starting sluicing automatically, to protect the safety of the exhaust pipe 230, to mitigate
The pressure of the exhaust pipe 230.
In one embodiment, the absorbent heat Q of the liquid 252 is (T1-T2) × c × m.Wherein, T1 is eruption
Object enters the temperature of 250 foregoing description liquid 252 of fluid-tight case.T2 is the temperature when liquid 252 gasifies.C is described
The specific heat capacity of liquid 252, m are the quality of the liquid 252.The absorbent heat Q of the liquid 252 is greater than the heat of eruption
Amount.
When the absorbent heat Q of the liquid 252 is greater than the heat of eruption, eruption is imported in the liquid 252,
The heat that the liquid 252 can discharge eruption absorbs heat.To which the liquid 252 cools down eruption, reduces
The temperature of eruption reduces condition element on fire of burning, and then plays the role of preventing propagation of flame.
Referring to Figure 1, in one embodiment, the lithium ion battery firebreak device 100 further includes multiple first pipes
310 and the first gas rail 330.The multiple first pipe 310 is set in first storage space 110.One described
One pipeline 310 is connect with the monomer safety valve 321 of a battery cell 320.The battery cell 320 is placed in described
In one storage space 110.The first gas rail 330 is set in first storage space 110.The first gas rail 330 with
Multiple first pipes 310 connect.The first gas rail 330 is connect with the cabinet gas outlet 121.
The eruption discharged each battery cell 320 by multiple first pipes 310 and the first gas rail 330 into
Row leads into from the cabinet gas outlet 121 and is discharged, and carries out back-fire relief into the liquid back-fire relief structure 20.Pass through multiple first
Pipeline 310 and the first gas rail 330 can prevent eruption, and arbitrarily flowing causes safety hidden in first storage space 110
Suffer from.
Fig. 2 is referred to, in one embodiment, the lithium ion battery firebreak device 100 further includes multiple monomer back-fire reliefs
Structure 40.Each monomer back-fire relief structure 40 has monomer back-fire relief structure inlet 410 and monomer back-fire relief structure outlet 420.Institute
Monomer back-fire relief structure outlet 420 is stated to connect with the first gas rail 330.The monomer resistance of one monomer back-fire relief structure 40
Fiery structure inlet 410 is connect with a first pipe 310.
When can be to 320 thermal runaway of battery cell by the monomer back-fire relief structure 40 eruption generate flame into
Row stops.Meanwhile it can be by the monomer back-fire relief structure 40 by multiple first pipes 310 and the first gas rail 330
The flame that the eruption missed generates, which guides to enter in the liquid back-fire relief structure 20, to be stopped.To by described
The flame that monomer back-fire relief structure 40 can generate eruption with the liquid back-fire relief structure 20 is stopped at many levels, is improved
The safety of the lithium ion battery firebreak device 100.
Fig. 3-4 is referred to, in one embodiment, each monomer back-fire relief structure 40 includes monomer back-fire relief shell 430
With multiple spaced first fire-proof plates 440.The monomer back-fire relief shell 430, which surrounds, forms a back-fire relief space 431.It is described
Monomer back-fire relief structure inlet 410 is set to the monomer back-fire relief shell 430 close to one end of the first pipe 310.Multiple
It is set in the back-fire relief space 431 every first fire-proof plate 440 of setting, the difference of the first fire-proof plate 440 described in every two
It is set to the opposite sides of 430 inner wall of monomer back-fire relief shell.And the setting of the first fire-proof plate 440 described in every two is same flat
Face.First fire-proof plate 440 described in every two forms a back-fire relief part 4421, the two neighboring interval of back-fire relief part 4421 setting.
One second opening 4422 is formed between first fire-proof plate 440 described in every two.Multiple second openings 4422 and multiple
Clearance space between the back-fire relief part 4421 forms second fire aisle 442.Second fire aisle 442 is to hinder
The only propagation of flame that eruption generates.
First fire-proof plate 440 described in every two is oppositely arranged, and forms second opening 4422.Wherein, Duo Gesuo
State the first fire-proof plate 440 structure can with it is identical can be different, second opening 4422 can be round, rectangular, star etc.
Multiple modification structures.Two first fire-proof plates 440 in each back-fire relief part 4421 can with it is identical can be different.It is multiple
Second fire aisle 442 that second opening 4422 and multiple back-fire relief parts 4421 are formed is a curved resistance
Fiery channel.In eruption is from the monomer back-fire relief structure inlet 410 into the back-fire relief space 431, and via described second
It is flowed out after fire aisle 442.At this point, the space in the back-fire relief space 431 is utilized in second fire aisle 442, so that
Eruption flows through longer route in the back-fire relief space 431.When eruption circulates in second fire aisle 442
When, the distance between two neighboring described back-fire relief part 4421 is less than the cut off diameter for the flame that eruption gas generates, and can make
The heat loss for the flame that eruption generates increases, and is obstructed to flame, so that burning cannot continue and extinguish.And
And when the flame that eruption generates circulates in second fire aisle 442, multiple 4421 benefits of the back-fire relief part can be hit
The destruction rate that chain reaction is conducive to contact surface (contact site when shock) heat transfer and increase active group is terminated with wall effect,
To continue to catch fire.
Wherein, eruption gas is methane, hydrogen, acetylene and imflammable gas and the mixture of oxygen etc..
In one embodiment, the maximum diameter of hole of second opening, 4422 (referring to b in Fig. 4) is less than 0.5 millimeter, phase
Spacing distance (referring to d in Fig. 4) between adjacent two back-fire relief parts 4421 is less than 0.5 millimeter.
It the maximum diameter of hole of second opening 4422, can be to methane, the hydrogen, second in eruption gas less than 0.5 millimeter
The flame that the mixture of alkynes and imflammable gas and oxygen generates is obstructed.Meanwhile when flame is open by described second
When 4422, can heat loss be increased suddenly, so that burning cannot continue and extinguish.Also, when flame is described second
In fire aisle 442 when circulation, multiple first fire-proof plates 440 can be hit, the temperature of flame can be made to pass through contact surface
It radiates, and increases the destruction rate of active group in flame, reduce the factor that flame continues kindling, thus can not be after
Continuous kindling, with the propagation of flame for preventing eruption from generating.
Spacing distance between the two neighboring back-fire relief part 4421 can generate eruption gas less than 0.5 millimeter
Flame is stopped, and anti-system passes through.At this point, can be with by second opening 4422 and multiple first fire-proof plates 440
It realizes and repeatedly stops, sufficiently flame is stopped, injury is preferably minimized, to ensure lithium ion battery in use
Reliability and safety.
In one embodiment, the maximum diameter of hole of second opening 4422 is less than 0.4 millimeter, the two neighboring back-fire relief
Spacing distance between part 4421 is less than 0.4 millimeter.Since the cut off diameter of the flame of methane generation is 0.4mm~0.5mm, institute
State what the second opening 4422 and the two neighboring back-fire relief part 4421 can adequately generate the methane in eruption gas
Flame is stopped.
In one embodiment, the maximum diameter of hole of second opening 4422 is less than 0.1 millimeter, the two neighboring back-fire relief
Spacing distance between part 4421 is less than 0.1 millimeter.At this point, since the cut off diameter of hydrogen and the flame of acetylene generation is
0.1mm~0.2mm, second opening 4422 and the two neighboring back-fire relief part 4421 can be adequately to eruption gases
In hydrogen and acetylene generate flame stopped.
In one embodiment, the maximum diameter of hole of second opening 4422 is less than 0.07 millimeter, the two neighboring resistance
Spacing distance between fiery part 4421 is less than 0.07 millimeter.At this point, due to the fire of the mixture of imflammable gas and oxygen generation
The cut off diameter of flame is 0.07mm~0.5mm, and second opening 4422 and the two neighboring back-fire relief part 4421 can be with
The flame adequately generated to the mixture of imflammable gas and oxygen in eruption gas stops.Meanwhile described second
The maximum diameter of hole of opening 4422 is less than 0.07 millimeter, and the spacing distance between the two neighboring back-fire relief part 4421 is less than 0.07 milli
The mixture of rice, the flame and imflammable gas and oxygen that can generate to flame, hydrogen and the acetylene that methane generates generates
Flame stopped, with prevent eruption generate propagation of flame.
Fig. 5-7 is referred to, in one embodiment, the lithium ion battery firebreak device 100 further includes that multiple intervals are set
The second fire-proof plate 450 and multiple support frames 451 set.Second fire-proof plate 450 is set in the back-fire relief space 431.
And each second fire-proof plate 450 is set between the two neighboring back-fire relief part 4421.Each second fire-proof plate 450
The inner wall of edge and the monomer back-fire relief shell 430 forms a third opening 4431.Each second opening 4422
It is set to the axial centerline in the back-fire relief space 431.Multiple third openings 4431, multiple second openings 4422
And the clearance space between each second fire-proof plate 450 and each back-fire relief part 4421 forms a third back-fire relief and leads to
Road 443.Propagation of flame of the third fire aisle 443 to prevent eruption generation.Each 451 one end of support frame as described above with
Second fire-proof plate 450 connects.Each 451 other end of support frame as described above is connect with the inner wall of the cabinet back-fire relief shell 220,
To support second fire-proof plate 250.
The inner wall of each second fire-proof plate, 450 edge and the monomer back-fire relief shell 430 forms a third
Opening 4431.That is, the size of second fire-proof plate 450 is less than the monomer back-fire relief shell 430 perpendicular to center
The size of the section of axis.For example, the monomer back-fire relief shell 430 is cylinder when second fire-proof plate 450 is round
When, the diameter of second fire-proof plate 450 is less than the section diameter of the monomer back-fire relief shell 430.Also, second back-fire relief
Inner wall of the edge of plate 450 with the monomer back-fire relief shell 430 is not connected to, and forms an annular third opening
4431.At this point, the inner wall of second fire-proof plate 450 and the monomer back-fire relief shell 430 forms a third opening 4431.
When eruption enters in the back-fire relief space 431 from the monomer back-fire relief structure inlet 410, pass through the third
4431 meetings be open so that eruption is dispersed, and is formed along third opening 4431 without several air-flows.Then without several
Air-flow flows through second opening 4422 after assembling.And so on, eruption is after the monomer back-fire relief structure inlet 410 entrance
It can be by multiple third openings 4431 and second opening 4422.
Wherein, third opening 4431 disperses eruption, can by the energy of eruption and impact force into
Row dispersion, reduces the energy of eruption.Meanwhile it can be made by third opening 4431 and second opening 4422
The path of the third fire aisle 443 is more times of traditional fire aisle path.Therefore, logical by increasing the third back-fire relief
The path in road 443 and the energy of dispersion eruption, can reduce danger caused by eruption, to ensure that lithium ion battery is using
Reliability and safety in the process.
Meanwhile when the flame that eruption generates circulates in the third fire aisle 443, two neighboring described second
When the distance between fire-proof plate 450 and the back-fire relief part 4421 are less than the cut off diameter of flame, eruption can be made to generate
The heat loss of flame increases, and is obstructed to flame, so that burning cannot continue and extinguish.Also, work as eruption
When the flame of generation circulates in the third fire aisle 443, second fire-proof plate 450 and the back-fire relief part can be hit
4421, the pin that chain reaction is conducive to contact surface (contact site when shock) heat transfer and increase active group is terminated using wall effect
Rate is ruined, to can not continue to catch fire.
In one embodiment, the maximum diameter of hole of the third opening 4431 is less than 0.5 millimeter, the adjacent back-fire relief part
Spacing distance between 4421 and second fire-proof plate 450 is less than 0.5 millimeter.
In one embodiment, the maximum diameter of hole of 4431 (c in Fig. 6) of the third opening is less than 0.5 millimeter, adjacent institute
The spacing distance between back-fire relief part 4421 and second fire-proof plate 450 is stated less than 0.5 millimeter.By being open to the third
Spacing distance between the setting of 4431 maximum diameter of hole and adjacent the back-fire relief part 4421 and second fire-proof plate 450
Setting, can to eruption gas in methane, hydrogen, acetylene and imflammable gas and oxygen mixture generate flame
It is obstructed.Meanwhile when flame is by third opening 4431 and second opening 4422, heat loss can be made unexpected
Increase, so that burning cannot continue and extinguish.Also, it when flame circulates in the third fire aisle 443, can hit
Hitting the back-fire relief part 4421 and second fire-proof plate 450 can make the temperature of flame radiate by wall surface, and increase
The destruction rate of active group in flame reduces the factor that flame continues kindling, to can not continue to catch fire, to prevent to spray
Send out the propagation of flame that object generates.
Similarly, in one embodiment, the maximum diameter of hole of the third opening 4431 and second opening 4422 is arranged
0.4mm can be less than, be less than 0.1mm, 0.07mm, the flame generated to realize the flame generated to methane, hydrogen and acetylene
Or the flame of the mixture generation of imflammable gas and oxygen is stopped, with the propagation of flame for preventing eruption from generating.
In one embodiment, the spacing distance between adjacent the back-fire relief part 4421 and second fire-proof plate 450
0.4mm can be less than, be less than 0.1mm, 0.07mm, the flame generated to realize the flame generated to methane, hydrogen and acetylene
Or the flame of the mixture generation of imflammable gas and oxygen is stopped, with the propagation of flame for preventing eruption from generating.
Wherein, support frame as described above 451 can be fixed second fire-proof plate 450, so that each described second
The inner wall of 450 edge of fire-proof plate and the monomer back-fire relief shell 430 forms the third opening 4431.Support frame as described above
It can be adopted in welded or bolted way when 451 connection.
Fig. 8-9 is referred to, in one embodiment, is provided with the back-fire relief part 4421 and second fire-proof plate 450
The shape for setting the monomer back-fire relief shell 430 at place can be the shape of cylindrical body or cubic shaped etc., and concrete shape is not done
Limitation.
0-12 referring to Figure 1, in one embodiment, the lithium ion battery firebreak device 100 further include multiple batteries
Module casing 50, multiple second pipes 710 and the second gas rail 720.Multiple battery modules shells 50, which surround, forms one
Second storage space 510.Multiple battery modules shells 50 are set in first storage space 110.Each electricity
Pond module casing 50 is provided with shell gas outlet 521.Each shell gas outlet 521 is provided with vessel safety valve 520.It is multiple
The first pipe 310 is set in second storage space 510 with the first gas rail 330.The first gas rail 330 with
The shell gas outlet 521 connects.Multiple second pipes 710 are set in first storage space 110.Described in one
Second pipe 710 is connect with the vessel safety valve 520 of a battery modules shell 50.The second gas rail 720 is set
It is placed in first storage space 110.The second gas rail 720 is connect with multiple second pipes 710.Second gas
Rail 720 is connect with the cabinet gas outlet 121.
When being provided with the battery modules shell 50 in first storage space 110, pass through multiple second pipes
Eruption by multiple first pipes 310 and the first gas rail 330 can be introduced the second gas rail by road 710
In 720.Meanwhile entering the liquid back-fire relief structure 20 via the cabinet gas outlet 121 and the cabinet safety valve 120.From
And pass through multiple first pipes 310, the first gas rail 330, multiple second pipes 710 and second gas
Rail 720 can be to avoid eruption arbitrarily flows in first storage space 110 and causes danger.
In one embodiment, the lithium ion battery firebreak device 100 further includes multiple mould group back-fire relief structures 60.Each
The mould group back-fire relief structure 60 has mould group back-fire relief structure inlet 610 and mould group back-fire relief structure outlet 620.Each mould group resistance
The mould group back-fire relief structure outlet 620 of fiery structure 60 is connect with the second gas rail 720.One mould group back-fire relief structure 60
The mould group back-fire relief structure inlet 610 connect with a second pipe 710.
Wherein, the mould group back-fire relief structure 60 is identical as the structure of the monomer back-fire relief structure 40.It is hindered by the mould group
The flame that fiery structure 60 can generate the eruption that the battery cell 320 in the battery modules shell 50 generates carries out
Stop.Meanwhile the eruption that the first pipe 310 and the first gas rail 330 can miss the monomer back-fire relief structure 40
The flame that object generates is guided into the mould group back-fire relief structure 60.And pass through the second pipe 710 and second gas
Rail 720 guides the flame that the eruption that the mould group back-fire relief structure 60 is missed generates into the liquid back-fire relief structure 20
Inside stopped.To pass through the mould group back-fire relief structure 60, the monomer back-fire relief structure 40 and the liquid back-fire relief structure 20
The flame that can be generated to eruption is stopped at many levels, improves the safety of the lithium ion battery firebreak device 100.
Referring to Figure 13, in one embodiment, the lithium ion battery firebreak device 100 further includes battery pack 80.Institute
Battery pack 80 is stated to be set in first storage space 110.When explosion leakage occurring when 80 thermal runaway of battery pack, when
After inside reaches certain pressure boundary, the cabinet safety valve 120 can be opened.At this point, eruption can enter the liquid back-fire relief
Structure 20.Blocking fire extinguishing is carried out by the flame that the liquid back-fire relief structure 20 can generate eruption, it is ensured that the electricity
The safety of pond packet 80 in actual use.
3-14 referring to Figure 1, in one embodiment, the lithium ion battery firebreak device 100 further include fiber back-fire relief
Structure 130.The fiber back-fire relief structure 130 is filled in first storage space 110, and the fiber back-fire relief structure 130 is
Flexible flame retardant fibre structure.And the fiber back-fire relief structure 130 is for surrounding the multiple battery cell 320 or battery pack 80
Setting, to prevent the propagation of flame that eruption generates after 80 thermal runaway of the multiple battery cell 320 or battery pack.
The fiber back-fire relief structure 130 is filled in first storage space 110 and by the multiple battery cell 320
Or the battery pack 80 is surrounded.Even if after the battery cell 320 discharges eruption or the rupture of the battery pack 80, the fiber
Back-fire relief structure 130 is flexible flame retardant fibre structure, still can be covered on multiple battery cells 320 or the battery pack 80
Or around the Battery case 10.Can eruption be isolated by the fiber back-fire relief structure 130 with air, prevent
Only the burning mixture in eruption, Mars are contacted with air.Meanwhile the fiber back-fire relief structure 130 is covered on multiple institutes
It states around battery cell 320, can also to be isolated between the two neighboring battery cell 320.To avoid
The battery cell 320 around influencing after one of them described 320 thermal runaway of battery cell, plays the role of isolation, subtracts
Burning condition element on fire is lacked.To which the flame generated to eruption prevents, and then play prevention propagation of flame
Effect.
Simultaneously as the fiber back-fire relief structure 130 is fire resistance fibre structure, erupted when the battery cell 320 discharges
After object or the Battery case 10 rupture, the air that can obstruct surrounding contacts the battery cell 320 after thermal runaway, prevents
Enhancing flame causes new flame to generate.To which lithium ion battery can be improved in reality by the fiber back-fire relief structure 130
Safety in the use process of border.
In one embodiment, the fiber back-fire relief structure 130 is fibre bundle, has plurality of fibers silk, adjacent described
The distance between fiber filament is less than 0.5 millimeter.
It is also assumed that the fiber back-fire relief structure 130 is fibrous composite, the fiber filament of the fibrous composite
Diameter is less than 0.5 millimeter.
The flame transmitting cut off diameter generated according to gas with various or steam is different, the fiber filament of the fibrous composite
Diameter setting can also be different.The fiber string diameter of the fibrous composite less than 0.5 millimeter, can to eruption gas in methane,
The flame that the mixture of hydrogen, acetylene and imflammable gas and oxygen generates is obstructed.Meanwhile when flame passes through the fibre
When tieing up back-fire relief structure 130, since the fiber string diameter of the fibrous composite is less than 0.5 millimeter, heat loss can be made unexpected
Increase, reduces the condition element that flame continues kindling, so that burning cannot continue and extinguish, and then prevent eruption
The propagation of flame of generation.
In one embodiment, the fiber back-fire relief structure 130 is fibre bundle, has plurality of fibers silk, adjacent described
The distance between fiber filament is less than 0.4 millimeter.Since the cut off diameter of the flame of methane generation is 0.4mm~0.5mm, the fibre
The flame that dimension back-fire relief structure 130 can sufficiently generate the methane in eruption gas stops.
In one embodiment, the fiber back-fire relief structure 130 is fibre bundle, has plurality of fibers silk, adjacent described
The distance between fiber filament is less than 0.1 millimeter.Since the cut off diameter of hydrogen and the flame of acetylene generation is 0.1mm~0.2mm,
The flame that the fiber back-fire relief structure 130 can sufficiently generate the hydrogen and acetylene that erupt in gas stops.
In one embodiment, the fiber back-fire relief structure 130 is fibre bundle, has plurality of fibers silk, adjacent described
The distance between fiber filament is less than 0.07 millimeter.It is also assumed that the fiber string diameter of the fibrous composite is less than 0.07 milli
Rice.
It is described since the cut off diameter of the flame of the mixture of imflammable gas and oxygen generation is 0.07mm~0.5mm
Fiber back-fire relief structure 130 can sufficiently to eruption gas in imflammable gas and oxygen mixture generate flame hinder
It blocks.
In one embodiment, the fiber back-fire relief structure 130 is quartz fibre.
Wherein, quartz fibre is that SiO2 content is higher than extraordinary glass fibers of 99.95% or more the, string diameter at 1 μm~15 μm
Dimension, is fabricated by high-purity silicon dioxide and natural quartz crystal.Also, quartz fibre is in all inorfils, and intensity is most
Continuous fiber of the standby temperature at 1000 DEG C or more when high, long-term, the short time is using temperature up to 1300 DEG C.Quartz fibre tool
There are high temperature resistance, insulation performance good, resistivity is high, can stop the flame generated in eruption, play fire extinguishing
Effect.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
The limitation to the application the scope of the patents therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the concept of this application, various modifications and improvements can be made, these belong to the guarantor of the application
Protect range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (11)
1. a kind of lithium ion battery firebreak device characterized by comprising
Battery case (10) surrounds and forms first storage space (110), is placed in first storage space (110)
Multiple battery cells (320) or battery pack (80), the Battery case (10) are provided with cabinet gas outlet (121)；
Cabinet safety valve (120) is set to the cabinet gas outlet (121)；
Liquid back-fire relief structure (20), including fluid-tight case (250), the fluid-tight case (250) and cabinet safety valve (120) pipeline
Connection, the fluid-tight case (250), which is surrounded, forms a liquid-retaining volume (251), places in the liquid-retaining volume (251)
There are liquid (252), to the eruption discharged after the multiple battery cell of cooling (320) or the battery pack (80) thermal runaway
Object, with the propagation of flame for preventing eruption from generating.
2. lithium ion battery firebreak device as described in claim 1, which is characterized in that the liquid back-fire relief structure (20) is also wrapped
It includes:
Exhaust pipe (230) is set between the fluid-tight case (250) and the cabinet safety valve (120), to by the liquid
Joint sealing (250) is connected to the cabinet safety valve (120)；
Pressure stabilizing cavity (220) is set between the exhaust pipe (230) and the cabinet safety valve (120), the pressure stabilizing cavity
(220) one end is connected to the exhaust pipe (230), and the pressure stabilizing cavity (220) is far from the exhaust pipe (230) one end and institute
The connection of cabinet safety valve (120) pipeline is stated, and the diameter of the pressure stabilizing cavity (220) is greater than the diameter of the exhaust pipe (230),
To ensure that the pressure in the exhaust pipe (230) is stablized；
Described exhaust pipe (230) one end is connected to the pressure stabilizing cavity (220), exhaust pipe (230) other end with it is described
Fluid-tight case (250) is connected and is extended in the liquid (252).
3. lithium ion battery firebreak device as claimed in claim 2, which is characterized in that the liquid back-fire relief structure (20) is also wrapped
It includes:
Check valve (240) is set in the exhaust pipe (230), to prevent the liquid (252) from flowing backward to the cabinet
Safety valve (120).
4. lithium ion battery firebreak device as claimed in claim 2, which is characterized in that the liquid back-fire relief structure (20) is also wrapped
It includes:
Drain valve (253) is set to fluid-tight case (250) bottom.
5. lithium ion battery firebreak device as described in claim 1, which is characterized in that the absorbent heat of the liquid (252)
Amount Q is (T1-T2) × c × m, wherein T1 is the temperature that eruption enters fluid-tight case (250) foregoing description liquid (252),
T2Temperature when gasifying for the liquid (252), c are the specific heat capacity of the liquid (252), and m is the matter of the liquid (252)
Amount；
The absorbent heat Q of liquid (252) is greater than the heat of eruption.
6. lithium ion battery firebreak device as described in claim 1, which is characterized in that further include:
Multiple first pipes (310) are set in first storage space (110), a first pipe (310) and one
The monomer safety valve (321) of a battery cell (320) connects, and the battery cell (320) is placed in first storage
In space (110)；
First gas rail (330) is set in first storage space (110), the first gas rail (330) and multiple described the
One pipeline (310) connection, the first gas rail (330) connect with the cabinet gas outlet (121).
7. lithium ion battery firebreak device as claimed in claim 6, which is characterized in that further include:
Multiple monomer back-fire relief structures (40), each monomer back-fire relief structure (40) have monomer back-fire relief structure inlet (410) with
Monomer back-fire relief structure exports (420), and the monomer back-fire relief structure outlet (420) connect with the first gas rail (330)；
The monomer back-fire relief structure inlet (410) of one monomer back-fire relief structure (40) and a first pipe
(310) it connects.
8. lithium ion battery firebreak device as claimed in claim 7, which is characterized in that each monomer back-fire relief structure (40)
Including monomer back-fire relief shell (430) and multiple spaced first fire-proof plates (440)；
The monomer back-fire relief shell (430), which is surrounded, forms a back-fire relief space (431), the monomer back-fire relief structure inlet (410)
It is set to the one end of the monomer back-fire relief shell (430) close to the first pipe (310)；
Multiple spaced first fire-proof plates (440) are set in the back-fire relief space (431), the described in every two
One fire-proof plate (440) is respectively arranged at the opposite sides of monomer back-fire relief shell (430) inner wall, and the first resistance described in every two
Fiery plate (440) is arranged in same plane；
First fire-proof plate (440) described in every two forms a back-fire relief part (4421), between the two neighboring back-fire relief part (4421)
Every setting；
One second opening (4422) is formed between first fire-proof plate (440) described in every two；
Clearance space between multiple second openings (4422) and multiple back-fire relief parts (4421) forms one second
Fire aisle (442), propagation of flame of second fire aisle (442) to prevent eruption generation.
9. lithium ion battery firebreak device as claimed in claim 8, which is characterized in that further include:
Multiple spaced second fire-proof plates (450) are set in the back-fire relief space (431), and each second resistance
Fiery plate (450) is set between the two neighboring back-fire relief part (4421)；
The inner wall of each second fire-proof plate (450) edge and the monomer back-fire relief shell (430) forms a third
It is open (4431)；
Each second opening (4422) is set to the axial centerline of the back-fire relief space (431)；
Multiple third openings (4431), multiple second openings (4422) and each second fire-proof plate (450)
Clearance space between each back-fire relief part (4421) forms a third fire aisle (443), and the third back-fire relief is logical
Propagation of flame of the road (443) to prevent eruption generation；
Multiple support frames (451), each support frame as described above (451) one end are connect with second fire-proof plate (450), each described
Support frame (451) other end is connect with the inner wall of the cabinet back-fire relief shell (220), to support second fire-proof plate
(250)。
10. lithium ion battery firebreak device as claimed in claim 8, which is characterized in that second opening (4422) is most
Large aperture is less than 0.5 millimeter, and the spacing distance between the two neighboring back-fire relief part (4421) is less than 0.5 millimeter.
11. lithium ion battery firebreak device as claimed in claim 9, which is characterized in that the third opening (4431) is most
Less than 0.5 millimeter, the spacing distance between the adjacent back-fire relief part (4421) and second fire-proof plate (450) is small for large aperture
In 0.5 millimeter.
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| CN201910717059.5A CN110393875A (en) | 2019-08-05 | 2019-08-05 | Lithium ion battery firebreak device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910717059.5A CN110393875A (en) | 2019-08-05 | 2019-08-05 | Lithium ion battery firebreak device |
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