CN108682919A - A kind of system and method for the Li-ion batteries piles heat management based on phase-change microcapsule suspension - Google Patents
A kind of system and method for the Li-ion batteries piles heat management based on phase-change microcapsule suspension Download PDFInfo
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- CN108682919A CN108682919A CN201810482706.4A CN201810482706A CN108682919A CN 108682919 A CN108682919 A CN 108682919A CN 201810482706 A CN201810482706 A CN 201810482706A CN 108682919 A CN108682919 A CN 108682919A
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- ion batteries
- batteries piles
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- change microcapsule
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/615—Heating or keeping warm
-
- 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
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
-
- 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
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
-
- 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
- H01M10/6552—Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes
-
- 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
-
- 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
Abstract
The invention discloses a kind of system and method for the Li-ion batteries piles heat management based on phase-change microcapsule suspension.The system includes babinet and is set to the Li-ion batteries piles for the square lithium ion battery monomer composition placed vertically side by side in babinet, Li-ion batteries piles side is equipped with liquid inlet duct, the other side is equipped with liquid outlet tube, microchannel metallic plate is additionally provided in babinet, microchannel metallic plate and lithium-ion battery monomer interval are vertically arranged, it is provided with temperature sensor in Li-ion batteries piles, controller, water pump, heater, radiator and refrigerator are provided with outside babinet.The characteristics of present invention utilizes phase-change microcapsule suspension latent heats of phase change greatly, microcapsule phase-change process temperature is constant, suspension can be with heat convection under the action of water pump, phase-change microcapsule suspension is used for battery thermal management, active and passive heat management is combined, heating and refrigerating function are had both, realizes and temperature in Li-ion batteries piles is accurately controlled.
Description
Technical field：
The present invention relates to technical field of lithium ion, more particularly to a kind of lithium based on phase-change microcapsule suspension from
The system and method for sub- battery pack heat management.
Background technology：
Important component of the lithium ion battery as electric vehicle is higher to operating environment requirements.Result of study shows,
Temperature has a major impact the charge-discharge performance and service life of lithium ion battery.When environment temperature is less than 0 DEG C, lithium ion battery
Internal resistance is excessive when the generation electrochemical reaction of inside, and discharge power is relatively low and can not charge normal；Square lithium ion battery is in low power
Quantity of heat production is less when rate charge and discharge, each section quantity of heat production is more balanced, and when high magnification fast charging and discharging, quantity of heat production increases rapidly,
And different zones difference is apparent, close to the region heat production rate bigger of battery pole ear；Square battery thermal conductivity is limited by battery material
Very low, nearby, among battery etc. regional temperatures are higher for lug, such as cannot timely and effectively be cooled down to each region of battery, can be serious
Battery life is influenced, or even causes the safety problems such as thermal runaway.Therefore, for ensure Li-ion batteries piles normal work, extend electricity
Pond cycle life, need to using battery pack thermal management system, the temperature difference is less than 5 DEG C within 25~40 DEG C, between module by temperature control.
Currently, the heat management of Li-ion batteries piles for electric vehicle mainly uses air cooling and liquid to cool down.Wherein, empty
Air cooling method refers to being matched using natural wind or wind turbine by a kind of radiating mode of medium reduction battery temperature of Cryogenic air
It closes the included radiator of automobile for battery to cool down, be most widely used in batteries of electric automobile heat management system.Air cooling
System structure is simple, convenient for safeguarding, but higher environment temperature, continue big load etc. under the conditions ofs cooling effect it is poor.Liquid
Cooling refers to that heat exchange occurs with battery pack in such a way that liquid coolant is by heat convection, the heat band that battery is generated
It walks to reduce battery temperature.Since liquid medium specific heat capacity, thermal coefficient are more than air, heat convection is with obvious effects to be increased, is cold
But speed is fast, for reducing battery pack maximum temperature, promoting battery pack temperature field consistency significant effect, while heat management system
Volume it is also relatively small.But this method needs to increase water circulating pump, increases the complexity of system.
Invention content：
The object of the present invention is to provide a kind of systems of the Li-ion batteries piles heat management based on phase-change microcapsule suspension
And method, it is utilized that phase-change microcapsule suspension latent heat of phase change is big, microcapsule phase-change process temperature is constant, phase-change microcapsule suspends
Phase-change microcapsule suspension is applied to battery thermal management by the characteristics of liquid can be with heat convection under the action of water pump, active and passive
Heat management is combined, and has both heating and refrigerating function, is suitable for varying environment temperature and applying working condition, is passed through flexible heat management
Mode can be carried effectively to greatest extent by battery temperature control within optimum range, the maximum temperature difference of reduction single battery
High battery security extends battery, while reducing energy consumption.
The present invention is achieved by the following technical programs：
It is an object of the present invention to provide a kind of Li-ion batteries piles heat managements based on phase-change microcapsule suspension
System, including babinet and the lithium ion for being set to several square lithium ion battery monomer compositions placed vertically side by side in babinet
Battery pack, the Li-ion batteries piles side are equipped with liquid inlet duct, and the other side is equipped with liquid outlet tube, in the babinet
It is additionally provided with microchannel metallic plate, the microchannel metallic plate and lithium-ion battery monomer interval are vertically arranged, the micro- glue of phase transformation
Capsule suspension enters microchannel metallic plate by liquid inlet duct and lithium-ion battery monomer is cooled down or heated, then by liquid
Outlet flows out, and is provided with temperature sensor in the Li-ion batteries piles, controller, water are provided with outside the babinet
Pump, heater, radiator and refrigerator, the controller, heater, water pump and babinet form the battery low-temperature heat being closed
Loop, the controller, radiator, water pump and babinet form the battery room temperature cooling loop being closed, the controller, cold
But device, water pump and babinet form the battery high-temperature cooling loop being closed, and the controller is also connected with temperature sensor, receives temperature
The signal that degree sensor transmits.
Phase-change microcapsule suspension is a kind of special functional fluid, by phase-change microcapsule and the uniform mixing of carrying object
At.It seals phase-change material in phase-change microcapsule up for safekeeping, is absorbed by latent heat of phase change, a large amount of heat of release, while ensureing the perseverance of temperature
It is fixed.Phase-change microcapsule suspension has good flow behavior, can be flowed as water under the driving of water pump.Based on phase transformation
The flow behavior of the latent heat of phase change of phase-change microcapsule and carrying object is incorporated in one by the battery thermal management system of microcapsule suspensions
It rises, equivalent specific heat holds larger during heat management, and temperature change is smaller, expands the heat exchange temperature between fluid and lithium ion battery
Difference is conducive to improve heat convection effect.Meanwhile phase-change microcapsule suspension is absorbed greatly by free convection under static state
The heat of amount, the heater carried in conjunction with electric vehicle, radiator, refrigerator, being provided for flexible and changeable heat management pattern can
Can, advantageously reduce the energy consumption of heat management system.
Preferably, the microchannel for phase-change microcapsule Fibre Suspensions is provided on the microchannel metallic plate, it is micro-
Channel includes that several equally distributed Vertical Channels, upper horizontal channel and lower horizontal channel, the entrance of wherein microchannel are located at
The outlet on upper horizontal channel one end, microchannel metallic plate upper left side, microchannel is located at lower horizontal channel one end, microchannel metallic plate
Lower right；The microchannel gross area of the microchannel metallic plate accounts for the 70% of microchannel metallic plate area；The microchannel
Metallic plate wall thickness 0.5mm, microchannel cross section are rectangle, thickness 3.5mm.
Preferably, the material of the microchannel metallic plate, liquid inlet duct and liquid outlet tube is aluminium.Microchannel gold
The material for belonging to plate is aluminium, strengthens conductive force during heat management, reduces the local temperature difference of battery.
Preferably, the tube section of the liquid inlet duct is flat, and the tube section of the liquid outlet tube is flat
It is flat-shaped.
Preferably, the phase that the water and mass fraction that the phase-change microcapsule suspension is 80% by mass fraction are 20%
Become microcapsules composition, the average grain diameter of the phase-change microcapsule is 0.1~1000 μm.Phase-change microcapsule temperature is on 35 DEG C of left sides
It is right.
Preferably, the cyst material of the phase-change microcapsule is melamine resin or Lauxite, the phase-change microcapsule
Interior phase-change material is paraffin or paraffin hydrocarbon.
Preferably, the lithium-ion battery monomer is equipped with positive pole ear and negative lug, and the liquid inlet duct is set
It is placed on the outside of the positive pole ear of lithium-ion battery monomer, the liquid outlet tube is set to lithium-ion battery monomer negative lug
The lower section in outside, the temperature sensor are arranged at positive pole ear or negative lug.Due to positive pole ear or cathode pole
Temperature highest at ear, temperature sensor will be arranged at positive pole ear or negative lug, convenient for detecting lithium ion in time
The temperature of battery ensures that lithium ion battery works within the scope of normal temperature.
It is a further object to provide the sides of the Li-ion batteries piles heat management based on phase-change microcapsule suspension
Method is included the following steps using above system：
(1) under cold conditions, temperature is less than 10 DEG C in temperature sensor monitors to Li-ion batteries piles, and controller starts water
Pump and heater open battery low-temperature heat loop, after the heated device heating of phase-change microcapsule suspension under the driving of water pump
Into babinet, liquid inlet duct, microchannel metallic plate and liquid outlet tube are flowed through, to lithium-ion electric by way of heat convection
Pond group is heated, and temperature of lithium ion battery group is controlled at 25 DEG C or more, temperature of lithium ion battery group is maintained best model
It encloses within 25 DEG C~40 DEG C；
(2) under normal temperature condition, when the small rate charge-discharge of Li-ion batteries piles, lithium-ion battery monomer each section calorific value
Uniformly, quantity of heat production is small, and phase-change microcapsule suspension is in stationary state, micro- logical between lithium-ion battery monomer in Li-ion batteries piles
In road metallic plate, phase-change microcapsule suspension absorbs the heat that battery generates by heat transfer, in phase-change microcapsule suspension
Phase-change microcapsule reduces Li-ion batteries piles maximum temperature, reduces Li-ion batteries piles each section by its latent heat of phase change
The temperature difference；
(3) under normal temperature condition, when Li-ion batteries piles high rate charge-discharge, lithium-ion battery monomer each section calorific value
It differs greatly, the big temperature highest of calorific value at the positive pole ear of lithium-ion battery monomer or negative lug works as positive pole ear
Or the temperature sensor monitors near negative lug, when being higher than 40 DEG C to temperature, controller starts water pump and radiator, opens electricity
Pond room temperature cooling loop, phase-change microcapsule suspension under the driving of water pump enter Li-ion batteries piles, flow through liquid inlet duct,
Microchannel metallic plate and liquid outlet tube, cool down to Li-ion batteries piles by way of heat convection, while reducing lithium
The temperature difference of ion battery monomer and Li-ion batteries piles, by temperature of lithium ion battery group maintain 25 DEG C~40 DEG C of optimum range it
It is interior；
(4) under high-temperature condition, when the temperature sensor monitors in Li-ion batteries piles are higher than to temperature of lithium ion battery group
At 40 DEG C, controller starts water pump and refrigerator, opens battery high-temperature cooling loop, phase-change microcapsule suspension is dropped through refrigerator
Enter Li-ion batteries piles after temperature under the driving of water pump, flow through liquid inlet duct, microchannel metallic plate and liquid outlet tube, leads to
The mode for crossing heat convection cools down to Li-ion batteries piles, while reducing lithium-ion battery monomer and Li-ion batteries piles
The temperature difference maintains temperature of lithium ion battery group within 25 DEG C~40 DEG C of optimum range.
Beneficial effects of the present invention are as follows：Big, microcapsules phase that present invention utilizes phase-change microcapsule suspension latent heats of phase change
Become the characteristics of process temperature is constant, suspension can be with heat convection under the action of water pump, phase-change microcapsule suspension is used for
Battery thermal management, active and passive heat management are combined, and have both heating and refrigerating function, are suitable for varying environment temperature and are used work
Condition is realized and is accurately controlled to temperature in square Li-ion batteries piles；Coordinate the use pair of water pump, heater under cryogenic conditions
Battery effectively heats, and makes Li-ion batteries piles work at a suitable temperature, ensures Li-ion batteries piles normal work；Room temperature is low
The latent heat of phase change that heat transfer and phase-change microcapsule are only relied under loading condiction cools down battery；Match under room temperature high-load condition
The use of Heshui pump, radiator, reinforces the heat dissipation of battery by heat convection, and cooperation water pump under hot conditions, refrigerator make
With being cooled down to battery by the way of forced convertion, while absorbing the heat generated in charge and discharge process, to greatest extent
Reduce the temperature of battery；The present invention passes through flexible heat management mode maximum on the basis of phase-change microcapsule suspension is applied
Limit by battery temperature control within optimum range, reduce single battery maximum temperature difference, can effectively improve battery peace
Quan Xing, extend battery, while reducing energy consumption.
Description of the drawings：
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the Li-ion batteries piles structural schematic diagram in Fig. 1；
Fig. 3 is microchannel metallic plate longitudinal section in Fig. 2；
Fig. 4 is the control principle schematic diagram of the present invention；
Reference sign：1, controller, 2, temperature sensor, 3, water pump, 4, heater, 5, radiator, 6, refrigerator,
7, babinet, 8, lithium-ion battery monomer, 9, Li-ion batteries piles, 10, microchannel metallic plate, 11, liquid inlet duct, 12, liquid
Outlet, 13, microchannel entrance, 14, microchannel outlet, 15, vertical microchannel, 16, upper (lower) horizontal micro-channels, 17, phase transformation
Microcapsule suspensions.
Specific implementation mode：
It is the further explanation to the present invention below, rather than limiting the invention.
Except special instruction, equipment mentioned in the present invention and material are commercially available.
Embodiment：
As shown in Figs 1-4, a kind of Li-ion batteries piles heat management system based on phase-change microcapsule suspension, the system packet
It includes babinet 7, be set to the Li-ion batteries piles that multiple square lithium ion battery monomers 8 placed vertically side by side form in babinet 7
9, phase-change microcapsule suspension 17, liquid inlet duct 11, liquid outlet tube 12, microchannel metallic plate 10 and temperature sensor 2, if
Controller 1, water pump 3, heater 4, radiator 5 and the refrigerator 6 being placed in outside babinet 7, lithium-ion battery monomer 8 are provided with just
Pole lug and negative lug, 9 side of Li-ion batteries piles are equipped with flat liquid at lithium-ion battery monomer positive pole ear
The lower section of body inlet tube 11,9 other side of Li-ion batteries piles is equipped with flat liquid outlet tube 12,10 He of microchannel metallic plate
Square lithium ion battery monomer 8 is spaced to be vertically arranged, and is provided with temperature sensor 3 in Li-ion batteries piles 9, heater 4,
Radiator 5 and refrigerator 6 are in parallel, heater 4 and water pump 3, liquid inlet duct 11, babinet 7, liquid outlet tube 12 and controller 1
It is composed in series the battery low-temperature heat loop of a closure, radiator 5 and water pump 3, liquid inlet duct 11, babinet 7, liquid outlet
Pipe 12 and controller 1 are composed in series the battery room temperature cooling loop of a closure, refrigerator 6 and water pump 3, liquid inlet duct 11,
Babinet 7, liquid outlet tube 12 and controller 1 are composed in series the battery high-temperature cooling loop of a closure, and controller 1 connects temperature
Sensor 2, receives the signal that temperature sensor 2 transmits, determine operation battery low-temperature heat loop, battery room temperature cooling loop or
Battery high-temperature cooling loop ensures the normal work of lithium ion battery to control the operation of lithium ion battery heat management system.
Liquid inlet duct 11 is connected with the microchannel entrance 13 of microchannel metallic plate 10, liquid outlet tube 12 and microchannel gold
The microchannel outlet 14 for belonging to plate 10 is connected, and phase-change microcapsule suspension is entered by liquid inlet duct 11, and evenly dispersed inflow is adjacent
Microchannel metallic plate 10 between lithium-ion battery monomer 8, then be evenly distributed in microchannel metallic plate 10 to lithium by microchannel
Ion battery 8 is cooled down or is heated, and phase-change microcapsule suspension 17 finally collects in liquid outlet tube by microchannel outlet 14
12, flow out battery thermal management system.
The dynamic microchannel of phase-change microcapsule 17 liquid streams of suspension is useful on microchannel metallic plate 10, microchannel includes several
Equally distributed Vertical Channel 15 and upper (lower) horizontal channel 16, wherein microchannel entrance 13 be located at 16 one end of upper horizontal channel,
10 upper left side of microchannel metallic plate, microchannel outlet 14 are located at 16 one end of lower horizontal channel, 10 lower right of microchannel metallic plate；It is micro-
The microchannel gross area of channel metal plate 10 accounts for the 70% of 10 area of microchannel metallic plate；10 wall thickness 0.5mm of microchannel metallic plate,
Microchannel cross section is rectangle, thickness 3.5mm.
Phase-change microcapsule suspension 17 is made of the phase-change microcapsule that the water and mass fraction of mass fraction 80% are 20%,
The average grain diameter of the phase-change microcapsule is 0.1~1000 μm, and phase-change microcapsule temperature is at 35 DEG C or so.Phase-change microcapsule
Cyst material is melamine resin or Lauxite, and the phase-change material in phase-change microcapsule is paraffin or paraffin hydrocarbon.
Using above-mentioned apparatus, the method for the Li-ion batteries piles heat management based on phase-change microcapsule suspension, including it is following
Step：
Under cold conditions, temperature sensor 2 monitors that temperature is less than 10 DEG C in Li-ion batteries piles 9, and controller 1 starts
Water pump 3 and heater 4 open battery low-temperature heat loop, in water pump 3 after the heating of 17 heated device 4 of phase-change microcapsule suspension
Driving under enter Li-ion batteries piles 9, liquid inlet duct 11, microchannel metallic plate 10, liquid outlet tube 12 are flowed through, by right
The mode of stream heat exchange heats Li-ion batteries piles 9, and 9 temperature of Li-ion batteries piles is controlled at 25 DEG C or more.
Under normal temperature condition, when 9 small rate charge-discharge of Li-ion batteries piles, 8 each section calorific value of lithium-ion battery monomer
It is relatively uniform, quantity of heat production is smaller, phase transformation suspension is in stationary state in battery thermal management system, in Li-ion batteries piles 9 lithium from
In microchannel metallic plate 10 between sub- battery cell 8, phase transformation suspension absorbs the heat that battery generates by heat transfer, and phase transformation is micro-
Phase-change microcapsule in capsule suspension liquid 17 reduces 9 maximum temperature of Li-ion batteries piles, reduces lithium by its latent heat of phase change
The temperature difference of 9 each section of ion battery group.
Under normal temperature condition, when 9 high rate charge-discharge of Li-ion batteries piles, 8 each section of square lithium ion battery monomer hair
Thermal difference is larger, and close to the big temperature highest of battery-heating amount at lug, the temperature sensor 2 near lug monitors temperature
When higher than 40 DEG C, controller 1 starts water pump 3 and radiator 5, opens battery room temperature cooling loop, phase-change microcapsule suspension 17
Enter Li-ion batteries piles 9 under the driving of water pump 3, flows through liquid inlet duct 11, microchannel metallic plate 10, liquid outlet tube
12, cooled down to Li-ion batteries piles 9 by way of heat convection, while reducing lithium-ion battery monomer 8 and lithium ion
The temperature difference of battery pack 9 maintains temperature of lithium ion battery group within 25 DEG C~40 DEG C of optimum range.
Under high-temperature condition, when the temperature sensor 2 in Li-ion batteries piles 9 monitors that 9 temperature of Li-ion batteries piles is higher than
At 40 DEG C, controller 1 starts water pump 3 and refrigerator 6, opens High-temperature cooling loop, phase-change microcapsule suspension 17 is through refrigerator 6
Enter Li-ion batteries piles 9 after cooling under the driving of water pump 1, flows through liquid inlet duct 11, microchannel metallic plate 10, liquid discharge
Mouth pipe 12, cools down to Li-ion batteries piles 9 by way of heat convection, while reducing lithium-ion battery monomer 8 and lithium
The temperature difference of ion battery group 9 maintains temperature of lithium ion battery group within 25 DEG C~40 DEG C of optimum range.
Above to a kind of system of the lithium ion battery heat management based on phase-change microcapsule suspension provided by the invention and
Method is described in detail, and the explanation of above example is only intended to help to understand technical scheme of the present invention and its core
Thought, it is noted that those of ordinary skill in the art, without departing from the principle of the present invention, can be with
Several improvements and modifications are made to the present invention, these improvement and modification are also fallen within the protection scope of the claims of the present invention.
Claims (9)
1. a kind of system of the Li-ion batteries piles heat management based on phase-change microcapsule suspension, which is characterized in that including babinet
It is described with the Li-ion batteries piles for being set to several square lithium ion battery monomer compositions placed vertically side by side in babinet
Li-ion batteries piles side is equipped with liquid inlet duct, and the other side is equipped with liquid outlet tube, is additionally provided in the babinet micro- logical
Road metallic plate, the microchannel metallic plate and lithium-ion battery monomer interval are vertically arranged, and phase-change microcapsule suspension passes through
Liquid inlet duct enters microchannel metallic plate and lithium-ion battery monomer is cooled down or heated, then is flowed out by liquid outlet tube,
Temperature sensor is provided in the Li-ion batteries piles, be provided with outside the babinet controller, water pump, heater,
Radiator and refrigerator, the controller, heater, water pump and babinet form the battery low-temperature heat loop being closed, described
Controller, radiator, water pump and babinet form the battery room temperature cooling loop being closed, the controller, cooler, water pump
The battery high-temperature cooling loop being closed is formed with babinet, the controller is also connected with temperature sensor, receives temperature sensor
The signal transmitted.
2. the system of the Li-ion batteries piles heat management according to claim 1 based on phase-change microcapsule suspension, special
Sign is, the microchannel for phase-change microcapsule Fibre Suspensions is provided on the microchannel metallic plate, microchannel includes
Several equally distributed Vertical Channels, upper horizontal channel and lower horizontal channel, the wherein entrance of microchannel are located at upper horizontal logical
The outlet on road one end, microchannel metallic plate upper left side, microchannel is located at lower horizontal channel one end, microchannel metallic plate lower right.
3. the system of the Li-ion batteries piles heat management according to claim 2 based on phase-change microcapsule suspension, special
Sign is that the microchannel gross area of the microchannel metallic plate accounts for the 70% of microchannel metallic plate area；The microchannel
Metallic plate wall thickness 0.5mm, microchannel cross section are rectangle, thickness 3.5mm.
4. the system of the Li-ion batteries piles heat management according to claim 1 based on phase-change microcapsule suspension, special
Sign is that the material of the microchannel metallic plate, liquid inlet duct and liquid outlet tube is aluminium.
5. the system of the Li-ion batteries piles heat management according to claim 1 based on phase-change microcapsule suspension, special
Sign is that the tube section of the liquid inlet duct is flat, and the tube section of the liquid outlet tube is flat.
6. the system of the Li-ion batteries piles heat management according to claim 1 based on phase-change microcapsule suspension, special
Sign is, the phase-change microcapsule that the water and mass fraction that the phase-change microcapsule suspension is 80% by mass fraction are 20%
The average grain diameter of composition, the phase-change microcapsule is 0.1~1000 μm.
7. the system of the Li-ion batteries piles heat management according to claim 6 based on phase-change microcapsule suspension, special
Sign is that the cyst material of the phase-change microcapsule is melamine resin or Lauxite, the phase transformation in the phase-change microcapsule
Material is paraffin or paraffin hydrocarbon.
8. the system of the Li-ion batteries piles heat management according to claim 1 based on phase-change microcapsule suspension, special
Sign is, the lithium-ion battery monomer is equipped with positive pole ear and negative lug, the liquid inlet duct be set to lithium from
On the outside of the positive pole ear of sub- battery cell, under the liquid outlet tube is set on the outside of lithium-ion battery monomer negative lug
Side, the temperature sensor are arranged at positive pole ear or negative lug.
9. a kind of method of the Li-ion batteries piles heat management based on phase-change microcapsule suspension, which is characterized in that utilize right
It is required that the system of the Li-ion batteries piles heat management based on phase-change microcapsule suspension in 1-8 described in any claim, packet
Include following steps：
(1) under cold conditions, in temperature sensor monitors to Li-ion batteries piles temperature be less than 10 DEG C, controller start water pump and
Heater is opened battery low-temperature heat loop, is entered under the driving of water pump after the heated device heating of phase-change microcapsule suspension
Babinet flows through liquid inlet duct, microchannel metallic plate and liquid outlet tube, to Li-ion batteries piles by way of heat convection
It is heated, temperature of lithium ion battery group is controlled at 25 DEG C or more；
(2) under normal temperature condition, when the small rate charge-discharge of Li-ion batteries piles, lithium-ion battery monomer each section calorific value is equal
It is even, quantity of heat production is small, phase-change microcapsule suspension is in stationary state, the microchannel in Li-ion batteries piles between lithium-ion battery monomer
In metallic plate, phase-change microcapsule suspension absorbs the heat that battery generates, the phase in phase-change microcapsule suspension by heat transfer
Become the temperature that microcapsules rely on its latent heat of phase change to reduce Li-ion batteries piles maximum temperature, reduce Li-ion batteries piles each section
Difference；
(3) under normal temperature condition, when Li-ion batteries piles high rate charge-discharge, lithium-ion battery monomer each section calorific value difference
Larger, the big temperature highest of calorific value at the positive pole ear of lithium-ion battery monomer or negative lug when positive pole ear or is born
When temperature sensor monitors near the lug of pole are higher than 40 DEG C to temperature, controller starts water pump and radiator, and it is normal to open battery
Warm cooling loop, phase-change microcapsule suspension enter Li-ion batteries piles under the driving of water pump, flow through liquid inlet duct, micro- logical
Road metallic plate and liquid outlet tube, cool down to Li-ion batteries piles by way of heat convection, while reducing lithium ion
The temperature difference of battery cell and Li-ion batteries piles；
(4) under high-temperature condition, when the temperature sensor monitors in Li-ion batteries piles to temperature of lithium ion battery group are higher than 40 DEG C
When, controller starts water pump and refrigerator, opens battery high-temperature cooling loop, phase-change microcapsule suspension is after refrigerator cools down
Enter Li-ion batteries piles under the driving of water pump, liquid inlet duct, microchannel metallic plate and liquid outlet tube is flowed through, by right
The mode of stream heat exchange cools down to Li-ion batteries piles, while reducing the temperature of lithium-ion battery monomer and Li-ion batteries piles
Difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810482706.4A CN108682919B (en) | 2018-05-18 | 2018-05-18 | System and method for lithium ion battery pack thermal management based on phase change microcapsule suspension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810482706.4A CN108682919B (en) | 2018-05-18 | 2018-05-18 | System and method for lithium ion battery pack thermal management based on phase change microcapsule suspension |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108682919A true CN108682919A (en) | 2018-10-19 |
| CN108682919B CN108682919B (en) | 2020-06-12 |
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| CN112803086A (en) * | 2020-12-30 | 2021-05-14 | 福建爱迪生科技有限公司 | Starting method of electric automobile suitable for cold seasons |
| CN113036262A (en) * | 2021-03-09 | 2021-06-25 | 宁波大学 | Balanced heat abstractor of battery module |
| CN113067053A (en) * | 2021-03-26 | 2021-07-02 | 浙江大学 | Phase change submicron capsule emulsion-based battery thermal management system and method thereof |
| CN113471576A (en) * | 2021-07-19 | 2021-10-01 | 合肥工业大学 | Oil-cooled battery thermal management system and control method |
| CN114667639A (en) * | 2019-10-17 | 2022-06-24 | 考特克斯·特克斯罗恩有限公司及两合公司 | Housing arrangement for a traction battery with a fluid-based cooling function and having an evaporation device with microchannels |
| CN115621622A (en) * | 2022-11-04 | 2023-01-17 | 楚能新能源股份有限公司 | Battery module heat management device, battery module and battery core temperature control method |
| WO2024032256A1 (en) * | 2022-08-12 | 2024-02-15 | 蔚来电池科技(安徽)有限公司 | Battery pack and vehicle comprising same |
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| CN113067053A (en) * | 2021-03-26 | 2021-07-02 | 浙江大学 | Phase change submicron capsule emulsion-based battery thermal management system and method thereof |
| CN113471576A (en) * | 2021-07-19 | 2021-10-01 | 合肥工业大学 | Oil-cooled battery thermal management system and control method |
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