CN108400408A - It is a kind of that there is fire-retardant Vehicular dynamic battery multichannel liquid cooling apparatus - Google Patents
It is a kind of that there is fire-retardant Vehicular dynamic battery multichannel liquid cooling apparatus Download PDFInfo
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- CN108400408A CN108400408A CN201810369409.9A CN201810369409A CN108400408A CN 108400408 A CN108400408 A CN 108400408A CN 201810369409 A CN201810369409 A CN 201810369409A CN 108400408 A CN108400408 A CN 108400408A
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- 238000001816 cooling Methods 0.000 title claims abstract description 76
- 239000003063 flame retardant Substances 0.000 title claims abstract description 21
- 239000002826 coolant Substances 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims description 23
- 238000002844 melting Methods 0.000 claims description 18
- 230000008018 melting Effects 0.000 claims description 18
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical group [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 16
- 229920006254 polymer film Polymers 0.000 claims description 14
- ZRIUUUJAJJNDSS-UHFFFAOYSA-N ammonium phosphates Chemical compound [NH4+].[NH4+].[NH4+].[O-]P([O-])([O-])=O ZRIUUUJAJJNDSS-UHFFFAOYSA-N 0.000 claims description 11
- 229910000743 fusible alloy Inorganic materials 0.000 claims description 9
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 8
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 8
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 229910001128 Sn alloy Inorganic materials 0.000 claims description 4
- 229910000634 wood's metal Inorganic materials 0.000 claims description 4
- 238000010304 firing Methods 0.000 claims 5
- 230000000694 effects Effects 0.000 abstract description 15
- 238000012546 transfer Methods 0.000 abstract description 3
- 238000005253 cladding Methods 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 230000017525 heat dissipation Effects 0.000 description 14
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- 229910045601 alloy Inorganic materials 0.000 description 2
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- 229910052782 aluminium Inorganic materials 0.000 description 2
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- 206010067484 Adverse reaction Diseases 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
- H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Secondary Cells (AREA)
Abstract
There is fire-retardant Vehicular dynamic battery multichannel liquid cooling apparatus the invention discloses a kind of；Including babinet and the battery pack being placed in babinet；Flat liquid cooling pipeline is wrapped up or is wrapped in the outer surface of each battery cell；The both ends nozzle of flat liquid cooling pipeline is communicated with the heat exchanger outside babinet or evaporator, and constitutes a sealing for coolant liquid in the liquid cooling channel of its internal circulation flow；It is filled with flame-retarding fire-extinguishing layer in the gap between gap between flat liquid cooling pipeline and babinet outside each battery cell.The present apparatus is while ensureing battery heat transfer effect, interior at the first time when battery thermal runaway occurs it can pass through material cladding prevention battery catching fire phenomenon caused by thermal runaway in all directions of putting out a fire, substantially increase the safety in utilization of battery, efficiently solve radiate under the conditions of normal battery operation and battery extreme in the case of contradiction between flame-retarding fire-extinguishing, ensure that the safety in utilization and reliability of Vehicular dynamic battery system.
Description
Technical field
The present invention relates to power battery field of heat management more particularly to it is a kind of have fire-retardant Vehicular dynamic battery multichannel
Liquid cooling apparatus.
Background technology
To meet the requirement that electric vehicle exports overlength course continuation mileage and dynamical system high-power high-voltage, power train in vehicle application
Battery is mostly that dense arrangement uses in groups for connection in series-parallel.Due to vehicle-mounted operating mode complexity, battery is frequently necessary to work long hours at big times
Under the charge and discharge operating mode of rate, in addition vehicle-mounted thermal environment is severe, the heat that battery generates in charge and discharge process is easy in battery
Accumulation, causes battery temperature to increase in packet, and the temperature difference between each battery increases, and influences performance and the service life of battery.Efficiently may be used
The battery thermal management system leaned on can ensure that battery always works within the scope of reasonable temperature, to improving Vehicular dynamic battery
Performance and cycle life play an important roll.
However, current heat management system heat radiation power is limited, only when the heat rate control of battery is in a certain range
It can just accomplish that battery temperature variation is controllable when interior, heat dissipation of the battery under extreme operating condition be considered insufficient.Once encountering mechanical punching
Hit, persistently overheat, super-charge super-discharge, external short circuit, foreign matter be pierced into etc. extreme cases when, inside battery side reaction aggravation, release
A large amount of reaction heat, battery heat rate can steeply rise in a short time.When battery heat rate persistently surmounts a certain threshold value,
Heat management system will no longer function, and battery temperature will steeply rise, final to cause battery thermal runaway.Battery thermal runaway discharges
Huge energy most likely result in propagation of the thermal runaway between remaining non-thermal runaway battery again, be to adjacent cells, module
It does great damage to entire electrokinetic cell system, or even causes the safety accidents such as on fire, burning, explosion, seriously threaten vehicle
With the safety of occupant.Existing Vehicular dynamic battery system is seldom equipped with fire extinguishing system, once battery catching fire, it is difficult to flutter to be
It goes out, can only wait inside batteries chemical reaction that can just stop completely, therefore there are prodigious security risks, this is also in recent years
Carry out the main reason for safety accidents such as electric vehicle spontaneous combustion, explosion on fire take place frequently.
The less radiating requirements for considering battery of existing fire extinguishing system are mostly the angles blocked from battery fire extinguishing or thermal runaway
Set out, it is general using installed additional in battery case small-sized fire extinguishing system or using it is direct it is heat-insulated by the way of block thermal runaway and its propagation
To avoid battery catches fire from burning.This kind of apparatus structure is complicated, of high cost, and is unfavorable for dissipating under the conditions of normal battery operation
Heat.
Invention content
The shortcomings that it is an object of the invention to overcome the above-mentioned prior art and deficiency provide a kind of with fire-retardant automobile-used dynamic
Power battery multichannel liquid cooling apparatus.It can be achieved at the same time heat dissipation under the conditions of normal battery operation and battery in extreme circumstances
Flame-retarding fire-extinguishing effectively improves the safety in utilization of Vehicular dynamic battery, reduces and eliminates and is safe hidden existing for Vehicular dynamic battery
Suffer from, it is ensured that Vehicular dynamic battery system securely and reliably can efficiently work under any vehicle environment.
The present invention is achieved through the following technical solutions：
It is a kind of that there is fire-retardant Vehicular dynamic battery multichannel liquid cooling apparatus, including babinet 5 and the electricity that is placed in babinet 5
Pond group 4；The battery pack 4 is made of multiple spaced battery cells；Package or winding in the outer surface of each battery cell
Flat liquid cooling pipeline 2；The both ends nozzle 1 of flat liquid cooling pipeline 2 with outside babinet 5 heat exchanger or evaporator communicate, and structure
At one seal, for coolant liquid in the liquid cooling channel of its internal circulation flow；
Between gap between flat liquid cooling pipeline 2 and flat liquid cooling pipeline 2 and babinet 5 outside each battery cell
Gap in be filled with flame-retarding fire-extinguishing layer 3.
It is made of more spaced liquid cooling runners 7 inside the flat liquid cooling pipeline 2, liquid cooling runner 7 may be used
Round, ellipse or rectangle.
5 top of the babinet is equipped with end cap 6, and the inner surface of end cap 6 has a concave surface 8, and in concave surface, 8 inner disc is wound with fire-retardant go out
Fire tube 9.
The flame-retarding fire-extinguishing layer 3 is made of low melting point polymer film and extinguishing chemical；The low melting point polymer film will
Extinguishing chemical is wrapped in it.
The extinguishing chemical is sodium bicarbonate extinguishing chemical or ammonium phosphate salt extinguishing chemical.
The integral thickness of the flame-retarding fire-extinguishing layer 3 is 3mm~6mm；Low melting point polymer film thickness is 0.2mm~1mm.
The tube body of the flame-retarding fire-extinguishing pipe 9 is low-melting alloy, is inside perfused with sodium bicarbonate extinguishing chemical or ammonium phosphate
Salt extinguishing chemical.
The tube body material of the flame-retarding fire-extinguishing pipe 9 is Wood's metal or tin alloy.
The tube body thickness of the flame-retarding fire-extinguishing pipe 9 is 0.5mm~1.5mm.
The present invention compared with the existing technology, has the following advantages and effect：
The present invention is in the outer surface of each battery cell package or is wrapped flat liquid cooling pipeline 2；The two of flat liquid cooling pipeline 2
End pipe mouth 1 by valve with outside babinet 5 heat exchanger or evaporator communicate, and constitute sealing, exist for coolant liquid
The liquid cooling channel of its internal circulation flow；The heat that coolant liquid absorbs battery in cyclic process carries out heat by evaporator with extraneous
It exchanges, realizes the High-temperature cooling of battery, or heat exchange is carried out with extraneous by heat exchanger, the heat obtained to battery release from the external world
Amount, realizes the low-temperature heat of battery.In practical application, the stream of coolant liquid can be allowed by controlling the flow velocity and temperature of coolant liquid
It is dynamic to take away the heat generated in cell operations or heat battery is provided, it can be ensured that battery is operated in rational temperature
Range.
Be separately filled between the gap of each battery of the present invention, in the end cap of babinet surrounding and babinet flame-retarding fire-extinguishing layer and
Flame-retarding fire-extinguishing pipe can avoid the battery catching fire caused by thermal runaway in extreme circumstances under their fire retardation
Phenomenon.
Flame-retarding fire-extinguishing layer between battery of the present invention, when battery temperature is more than certain threshold value, the eutectic of flame-retarding fire-extinguishing layer
Point thin polymer film can act on fusing rupture due to battery high-temperature, release internal fire extinguishing material in time, coat at the first time
Cooling and fire extinguishing processing are carried out in battery surface, the reaction of battery thermal runaway is blocked, prevents thermal runaway from further spreading, avoid battery
Catching fire.
Flame-retarding fire-extinguishing pipe in end cap of the present invention, when the temperature of battery is more than certain threshold value, flame-retarding fire-extinguishing outer tube layer
Low-melting alloy is since the high temperature action or battery of battery upper air are melted because the smog that thermal runaway generates acts on, in time
Internal fire extinguishing material is released, is coated at the first time above battery and carries out cooling and fire extinguishing processing and cell gap and electricity
The fire extinguishing material of pond case surrounding release blocks battery thermal runaway to react together, and thermal runaway is prevented further to spread, and strengthens battery and exists
Heat dissipation under extreme case and flame-retarding fire-extinguishing ability.
The flat liquid cooling pipeline of the present invention helps to improve the heat dissipation effect of battery；Using the liquid cooling of aluminum lightweight metal material
Pipeline, it is compact-sized, mitigate the weight of liquid cooling apparatus significantly, contributes to the lightweight of Vehicular dynamic battery system；Practical application
In, valve control liquid cooling pipeline can be used and communicated with extraneous heat exchanger or evaporator, realize the double-direction control of battery temperature；It adopts
With the flow direction of coolant liquid in two-way valve control channel, be conducive to reduce the temperature difference between each battery, promote the temperature one of battery
Cause property；It can at the first time in all directions while ensuring to meet proper heat reduction demand using flame-retarding fire-extinguishing layer and flame-retarding fire-extinguishing pipe
The security risk of catching fire, ensures the safety in utilization of battery comprehensively in the case of elimination battery extreme.
Description of the drawings
Fig. 1, which is the present invention, has fire-retardant Vehicular dynamic battery multichannel liquid cooling apparatus cross-sectional view.
Fig. 2 is A-A cross-sectional views in Fig. 1.
Fig. 3 is B-B cross-sectional views in Fig. 2.
Specific implementation mode
The present invention is more specifically described in detail with reference to specific embodiment.
Embodiment
As shown in Figs. 1-3.The invention discloses a kind of with fire-retardant Vehicular dynamic battery multichannel liquid cooling apparatus, including
Babinet 5 and the battery pack 4 being placed in babinet 5；The battery pack 4 is made of multiple spaced battery cells；In each electricity
Wrap up or be wrapped flat liquid cooling pipeline 2 in the outer surface of pond monomer；Outside the both ends nozzle 1 and babinet 5 of flat liquid cooling pipeline 2
Heat exchanger or evaporator communicate, and constitute one sealing, for coolant liquid in the liquid cooling channel of its internal circulation flow；
Flat liquid cooling pipeline is made of aluminum material, and thermal coefficient is high, can quickly pass to cell heat logical
Coolant liquid in road cools down battery in time；Intensity is high, density is small, and liquid cooling dress is significantly reduced while ensureing mechanical strength
The quality set contributes to the light-weight design of Vehicular dynamic battery system.
Between gap between flat liquid cooling pipeline 2 and flat liquid cooling pipeline 2 and babinet 5 outside each battery cell
Gap in be filled with flame-retarding fire-extinguishing layer 3.When battery works under normal operation, and battery temperature is less than given threshold, resistance
Combustion fire extinguishing layer does not work, and will not be impacted to the heat dissipation of battery, it can be ensured that heat dissipation when battery works under normal condition
Effect.When encountering the extreme cases battery temperatures such as mechanical shock, lasting overheat, super-charge super-discharge, external short circuit, foreign matter piercing drastically
When being increased beyond certain threshold value, the low melting point polymer film of flame-retarding fire-extinguishing layer outer layer can be broken since battery high-temperature acts on fusing
It splits, releases internal fire extinguishing material in time, be coated on battery surface at the first time and carry out cooling and fire extinguishing processing, block battery
Further thermal runaway reaction, prevents thermal runaway from further spreading, and battery extreme feelings are realized in the generation for avoiding battery catches fire from burning
Flame-retarding fire-extinguishing under condition.
It is made of more spaced liquid cooling runners 7 inside the flat liquid cooling pipeline 2, naturally it is also possible to using circle
Shape, ellipse or rectangle.By controlling the flow velocity and temperature of coolant liquid, the fluxion strap of coolant liquid is allowed to walk in cell operations
The heat of generation provides heat battery, realizes and controls the temperature of battery, it is ensured that battery can be operated in rational temperature
Spend range.In practical application, also it can be provided with reversal valve in flat liquid cooling pipeline.The reversal valve can be with cooling in control channel
The flow direction of liquid can change the flow direction of coolant liquid, be conducive to reduce between each battery automatically at regular intervals
The temperature difference, it is ensured that the temperature consistency of battery improves cooling or the heating effect of liquid cooling apparatus.
5 top of the babinet is equipped with end cap 6, and the inner surface of end cap 6 has a concave surface 8, and in concave surface, 8 inner disc is wound with fire-retardant go out
Fire tube 9.It is fixed thereto that thermal conductive insulation glue can be used in flame-retarding fire-extinguishing pipe 9.Flame-retarding fire-extinguishing pipe 9 be in order to enhance fire extinguishing flame retardant effect,
Make up the fire extinguishing material between each cell gap can not be cooled down to cell top end and put out a fire processing and use a kind of measure.When
Battery works under normal operation, and when battery temperature is less than certain threshold value, flame-retarding fire-extinguishing pipe does not work, will not be to battery
Heat dissipation impacts, it can be ensured that heat dissipation effect when battery works under normal condition.When encounter mechanical shock, lasting overheat,
When the extreme cases battery temperatures such as super-charge super-discharge, external short circuit, foreign matter piercing are steeply risen more than certain threshold value, flame-retarding fire-extinguishing pipe
The low-melting alloy of outer layer can occur due to the high temperature action or battery of battery upper air because the smog that thermal runaway generates acts on
Fusing, internal fire extinguishing material is released in time, is coated at the first time above battery and is carried out cooling and fire extinguishing processing, and electricity
The fire extinguishing material of pond gap and the release of battery case surrounding blocks battery thermal runaway to react together, and thermal runaway is prevented further to spread,
It avoids battery catches fire from burning, strengthens battery heat dissipation in extreme circumstances and flame-retarding fire-extinguishing ability.
The flame-retarding fire-extinguishing layer 3 is made of low melting point polymer film and extinguishing chemical；The low melting point polymer film will
Extinguishing chemical is wrapped in it.EVA class low melting points macromolecule membrane, POE class low melting point high scores can be used in low melting point polymer film
Sub- film etc..
The extinguishing chemical is sodium bicarbonate extinguishing chemical or ammonium phosphate salt extinguishing chemical.
The integral thickness of the flame-retarding fire-extinguishing layer 3 is 3mm~6mm；Low melting point polymer film thickness is 0.2mm~1mm.
The tube body of the flame-retarding fire-extinguishing pipe 9 is low-melting alloy, is inside perfused with sodium bicarbonate extinguishing chemical or ammonium phosphate
Salt extinguishing chemical.
The tube body material of the flame-retarding fire-extinguishing pipe 9 is Wood's metal or tin alloy.
The tube body thickness of the flame-retarding fire-extinguishing pipe 9 is 0.5mm~1.5mm.
The present invention can first while ensuring to meet proper heat reduction demand using flame-retarding fire-extinguishing layer and flame-retarding fire-extinguishing pipe
Time eliminates the security risk of catching fire in the case of battery extreme in all directions, ensures the safety in utilization of battery comprehensively.
Thermal conductive insulation glue such as asphalt mixtures modified by epoxy resin of the flat liquid cooling pipeline 2 by welding or using thermal conductivity not less than 0.5W/mk
Fat, organosilicon etc. are fixed in battery cell or module surface, effectively shorten the Heat transmission distance between battery and liquid cooling apparatus,
The export for accelerating cell heat, improves cooling effect.
Coolant liquid is connected in more spaced liquid cooling runners 7, the present invention uses 4-5 roots, and particular number can basis
Depending on practical application.The design of multichannel can not only improve heat exchange effect, and make liquid cooling apparatus compacter, be conducive to
The space layout of battery case.The liquid heat-transfer medium of the preferred good insulation preformance of coolant liquid, good heat conductivity, such as water, water-second
Glycol, silicone oil etc..The wall thickness etc. of the shape of cross section, size, the runner number, liquid cooling pipeline and the runner that are arranged in pipeline
Parameter is determined according to the watt level and radiating requirements of battery cell, the thermal coefficient of selected coolant liquid.Pass through control
The flow velocity and temperature of coolant liquid allow the fluxion strap of coolant liquid to walk the heat generated in cell operations or provide heat electricity
Pond is realized and is controlled the temperature of battery, it is ensured that battery can be operated in rational temperature range.
The both ends nozzle 1 of flat liquid cooling pipeline 2 is controlled by valve and is communicated with extraneous heat exchanger or evaporator, constitutes one
The liquid cooling channel of a closed circulation.The heat that coolant liquid is absorbed or discharged in cyclic process is by heat exchanger or evaporator and outside
Boundary swaps, and realizes battery and extraneous heat exchange.When battery temperature exceeds set temperature range, nozzle 1 and evaporator
It communicates, coolant liquid becomes cryogenic liquid by evaporator effect at this time, and cooling treatment is carried out to battery；When battery temperature is less than conjunction
Manage temperature range when, nozzle 1 is communicated with heat exchanger, at this time coolant liquid by heat exchanger act on becomes high-temp liquid, to battery into
Row heat treatment, to realize the double-direction control to battery temperature, it is ensured that battery temperature can be tieed up always in normal working conditions
It holds in the reasonable scope.
It is provided with reversal valve simultaneously in runner.The reversal valve can be with the flow direction of coolant liquid in control channel, can be every
The flow direction that coolant liquid can be changed automatically every certain time is conducive to reduce the temperature difference between each battery, it is ensured that the temperature of battery
Consistency improves cooling or the heating effect of liquid cooling apparatus.
The fusing point height of low melting point polymer film, can rationally be selected according to the thermal runaway critical-temperature of selected battery
It selects.The POE low melting point macromolecule membranes of 120 DEG C of fusing point are used in the present embodiment.Flame-retarding fire-extinguishing layer internal firefighting material, can be used
Such as sodium bicarbonate extinguishing chemical, ammonium phosphate salt extinguishing chemical etc..Ammonium phosphate salt powder fire extinguishing agent is used in the present embodiment.Ammonium phosphate salt
Powder has the characteristics that good fluidity, storage period are long, moisture-sensitive caking, good insulating, toxicity is not low.
When battery works under normal operation, when battery temperature is less than 120 DEG C in certain threshold value such as the present embodiment, resistance
Combustion fire extinguishing layer 3 does not work, and will not be impacted to the heat dissipation of battery, it can be ensured that heat dissipation when battery works under normal condition
Effect.When encountering, extreme cases, the battery temperatures such as mechanical shock, lasting overheat, super-charge super-discharge, external short circuit, foreign matter piercing are anxious
When play is increased beyond 120 DEG C, the low melting point polymer film of 3 outer layer of flame-retarding fire-extinguishing layer can be broken since battery high-temperature acts on fusing
It splits, releases ammonium phosphate salt powder fire extinguishing agent in time, be coated on battery surface at the first time.Ammonium phosphate salt powder is sent out at high temperature
Raw decomposition reaction absorbs amount of heat, quickly reduces battery surface temperature, blocks the reaction of battery thermal runaway；Decomposition reactant exists
Battery surface generates one layer of vitreous film residual covering and is covered in battery surface, prevents thermal runaway from further spreading, avoids
Resume combustion after battery catches fire burns and puts out a fire, to realize the flame-retarding fire-extinguishing in the case of battery extreme.
To promote the effect of liquid cooling apparatus flame-retarding fire-extinguishing, the fire extinguishing material improved between each cell gap can not be to cell top end
The deficiency for being cooled down and being put out a fire devises special battery box cover 6, special concave surface is provided on battery box cover 6.Diameter is 2
Thermal conductive insulation glue of the flame-retarding fire-extinguishing pipe 9 of~6mm by thermal conductivity not less than 0.5W/mk is fixed in concave surface.Flame-retarding fire-extinguishing pipe 9
It is made of inside and outside two parts, outer layer is the low-melting alloy, such as Wood's metal, tin alloy etc. of 0.5~1.5mm of thickness.It is low
Melting alloy fusing point height can be according to selected battery thermal runaway critical-temperature and battery apart from battery box cover distance it is big
Small to be reasonably selected, the temperature of general alloy melting point will be less than the melting temperature for the flame-retarding fire-extinguishing layer film selected.This implementation
Example uses 92 DEG C of low-melting alloy.9 inside of flame-retarding fire-extinguishing pipe is equipped with a certain amount of fire extinguishing material, such as sodium bicarbonate is put out a fire
Agent, ammonium phosphate salt extinguishing chemical etc..The present embodiment uses ammonium phosphate salt powder fire extinguishing agent.Ammonium phosphate salt powder have good fluidity,
Storage period is long, not moisture-sensitive caking, good insulating, low toxicity the features such as.
When battery works under normal operation, the air themperature above battery does not exceed flame-retarding fire-extinguishing pipe exterior alloy
Fusing point, flame-retarding fire-extinguishing pipe do not work, will not be impacted to the heat dissipation of battery, it can be ensured that battery works under normal condition
When heat dissipation effect.When encountering the extreme cases such as mechanical shock, lasting overheat, super-charge super-discharge, external short circuit, foreign matter piercing,
Battery temperature steeply rises, and the air themperature above battery is more than due to the smog effect of heat transfer or the generation of battery thermal runaway
When certain threshold value, such as 92 DEG C in the present embodiment, then the low-melting alloy of flame-retarding fire-extinguishing outer tube layer will melt, in time
Ammonium phosphate salt powder fire extinguishing agent is released, is coated at the first time above battery and carries out cooling and fire extinguishing processing, between battery pack
Gap and the fire extinguishing material of battery case surrounding release block the thermal runaway of battery to react together, prevent thermal runaway from further spreading, keep away
Exempt from battery catches fire burning, strengthens battery heat dissipation in extreme circumstances and flame-retarding fire-extinguishing ability.
As described above, the present invention can be better realized.
Embodiment of the present invention are not limited by the above embodiments, other any Spirit Essences without departing from the present invention
With under principle made by changes, modifications, substitutions, combinations, simplifications, should be equivalent substitute mode, be included in the present invention
Within protection domain.
Claims (10)
1. a kind of having fire-retardant Vehicular dynamic battery multichannel liquid cooling apparatus, including babinet (5) and is placed in babinet (5)
Battery pack (4)；It is characterized in that：The battery pack (4) is made of multiple spaced battery cells；In each battery cell
Wrap up or be wrapped flat liquid cooling pipeline (2) in outer surface；The both ends nozzle (1) of flat liquid cooling pipeline (2) and babinet (5) outside
Heat exchanger or evaporator communicate, and constitute one sealing, for coolant liquid in the liquid cooling channel of its internal circulation flow；
Gap between flat liquid cooling pipeline (2) and flat liquid cooling pipeline (2) and babinet (5) outside each battery cell it
Between gap in be filled with flame-retarding fire-extinguishing layer (3).
2. having fire-retardant Vehicular dynamic battery multichannel liquid cooling apparatus according to claim 1, it is characterised in that：It is described flat
It is made of more spaced liquid cooling runners (7) inside flat liquid cooling pipeline (2).
3. having fire-retardant Vehicular dynamic battery multichannel liquid cooling apparatus according to claim 2, it is characterised in that：The case
End cap (6) is equipped with above body (5), the inner surface of end cap (6) has a concave surface (8), and inner disc is wound with flame-retarding fire-extinguishing pipe in concave surface (8)
(9)。
4. having fire-retardant Vehicular dynamic battery multichannel liquid cooling apparatus according to claim 2, it is characterised in that：The resistance
Firing fire extinguishing layer (3) is made of low melting point polymer film and extinguishing chemical；Extinguishing chemical is wrapped in by the low melting point polymer film
In it.
5. having fire-retardant Vehicular dynamic battery multichannel liquid cooling apparatus according to claim 4, it is characterised in that：It is described to go out
Fiery agent is sodium bicarbonate extinguishing chemical or ammonium phosphate salt extinguishing chemical.
6. having fire-retardant Vehicular dynamic battery multichannel liquid cooling apparatus according to claim 4, it is characterised in that：The resistance
The integral thickness for firing fire extinguishing layer (3) is 3mm~6mm；Low melting point polymer film thickness is 0.2mm~1mm.
7. having fire-retardant Vehicular dynamic battery multichannel liquid cooling apparatus according to claim 4, it is characterised in that：The resistance
The tube body for firing fire extinguishing tube (9) is low-melting alloy, is inside perfused with sodium bicarbonate extinguishing chemical or ammonium phosphate salt extinguishing chemical.
8. having fire-retardant Vehicular dynamic battery multichannel liquid cooling apparatus according to claim 7, it is characterised in that：The resistance
The tube body material for firing fire extinguishing tube (9) is Wood's metal or tin alloy.
9. having fire-retardant Vehicular dynamic battery multichannel liquid cooling apparatus according to claim 8, it is characterised in that：The resistance
The tube body thickness for firing fire extinguishing tube (9) is 0.5mm~1.5mm.
10. having fire-retardant Vehicular dynamic battery multichannel liquid cooling apparatus according to claim 2, it is characterised in that：It is described
The cross sectional shape of liquid cooling runner (7) can be round, ellipse or rectangle.
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| CN201810369409.9A CN108400408A (en) | 2018-04-24 | 2018-04-24 | It is a kind of that there is fire-retardant Vehicular dynamic battery multichannel liquid cooling apparatus |
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|---|---|---|---|
| CN201810369409.9A CN108400408A (en) | 2018-04-24 | 2018-04-24 | It is a kind of that there is fire-retardant Vehicular dynamic battery multichannel liquid cooling apparatus |
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| CN108400408A true CN108400408A (en) | 2018-08-14 |
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| CN109904556A (en) * | 2019-01-31 | 2019-06-18 | 扬州市永达电源有限公司 | A kind of energy storage battery based on radiating structure |
| CN112002846A (en) * | 2020-09-08 | 2020-11-27 | 北京未来智酷汽车科技有限公司 | Battery container, fire extinguishing method for battery of battery container, and vehicle |
| CN112533442A (en) * | 2020-11-20 | 2021-03-19 | 内蒙古工业大学 | Microelectronic high-efficiency heat dissipation device |
| CN112618994A (en) * | 2020-12-14 | 2021-04-09 | 中汽研（天津）汽车工程研究院有限公司 | Fire extinguishing system applied to lithium ion battery energy storage device |
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| EP3910721A1 (en) * | 2020-05-15 | 2021-11-17 | Altra S.p.A. | Battery pack provided with a safety system for thermal runaway and vehicle provided with such battery pack |
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| CN114665194A (en) * | 2022-05-20 | 2022-06-24 | 江苏时代新能源科技有限公司 | Pipeline assembly, cooling device, battery and electric device |
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| CN114374019A (en) * | 2021-12-24 | 2022-04-19 | 华南理工大学 | Power battery self-extinguishing protection device |
| CN114665194A (en) * | 2022-05-20 | 2022-06-24 | 江苏时代新能源科技有限公司 | Pipeline assembly, cooling device, battery and electric device |
| CN115154957A (en) * | 2022-08-10 | 2022-10-11 | 河南省海天消防科学研究院有限责任公司 | A quick extinguishing device for electric automobile |
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