CN105958155A - Phase-change material energy-storage based cooling method and apparatus for power battery - Google Patents
Phase-change material energy-storage based cooling method and apparatus for power battery Download PDFInfo
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- CN105958155A CN105958155A CN201610395862.8A CN201610395862A CN105958155A CN 105958155 A CN105958155 A CN 105958155A CN 201610395862 A CN201610395862 A CN 201610395862A CN 105958155 A CN105958155 A CN 105958155A
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- electrokinetic cell
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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
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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
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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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
- H01M10/65—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
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
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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
- H01M10/65—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
- H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a phase-change material energy-storage based cooling apparatus for a power battery. The cooling apparatus comprises a power battery, a cooling liquid circulation module and a refrigeration module, wherein the power battery is connected with the cooling liquid circulation module to form heat exchange circulation; heat exchange is carried out between the cooling liquid circulation module and the refrigeration module; the power batter is electrically connected with the cooling liquid circulation module and the refrigeration module separately; and according to the phase-change material energy-storage based cooling method for the power battery, the to-be-cooled power battery pack is cooled by the phase-change material energy-storage based cooling apparatus for the power battery. The cooling apparatus has the advantages of reasonable structure, high temperature control precision, high radiation capability, convenience in use, low power consumption and small size, and is more applicable to popularization and application in the temperature control of the power battery pack.
Description
Technical field
The invention belongs to cooling and power supply technique field, relate to a kind of electrokinetic cell cool-down method based on phase-change material energy storage and device.
Background technology
Electric automobile refers to, with vehicle power as power, drive wheels travel with motor, meets road traffic, the vehicle of security legislation requirements.It uses storage electricity in the battery to start.
Driving motor for electric automobile provides electric energy, and the electric energy of power supply is converted into mechanical energy by motor.Most widely used power supply is lead-acid accumulator, but along with the development of electric vehicle engineering, lead-acid accumulator is low due to energy, and charging rate is slow, and the life-span is short, is gradually replaced by other accumulator.The power supply developed mainly has sodium-sulphur battery, nickel-cadmium cell, lithium battery, fuel cell etc., and the application of these novel power supplies, the development for electric automobile opens wide prospect.
Electrokinetic cell uses the most in groups, and the change of temperature will certainly make to there is certain temperature difference opposite sex between battery.The temperature difference mainly affects bulk life time and the stability of set of cells.In all environmental factorss, temperature affects maximum to the charge-discharge performance of battery, because the electrochemical reaction on electrode, electrolyte interface is relevant with ambient temperature, electrode, electrolyte interface are considered the heart of battery.If temperature declines, the response rate of electrode also declines, it is assumed that cell voltage holding constant, and discharge current reduces, and the power output of battery also can decline.If temperature rises, contrary, i.e. cell output can rise.Same temperature also can affect the transfer rate of electrolyte, and temperature is too low, and too slowly, battery charging and discharging performance can be affected transfer rate, and temperature is the highest, as more than 45 DEG C, destroyed the chemical equilibrium in battery, cause side reaction.
Existing electric automobile power battery cooling method has following several:
1, free convection air cooling: utilize the temperature difference between battery surface and air, by the mode of free convection to function of environment heat emission.Need not increase other facilities.Radiating effect is very poor, is typically unsatisfactory for the radiating requirements of set of cells.
2, Forced Convection Air cooling: utilize fan to increase the air velocity of battery surface, strengthen the heat exchange of battery surface and air.Radiating effect is the most poor.
3, passive type liquid cooling: to the heat sink of set of cells one carrying liqs runner of configuration, set of cells is fitted with heat sink.Coolant flows through heat sink, and heat set of cells sent is taken away.Then coolant influent air heat exchanger (as water is arranged), under the mating reaction of fan, heat is scattered in air by coolant.Coolant after cooling enters back into heat sink, completes a circulation.This mode heat-sinking capability is the most limited.Need water row and fan that configuration is the biggest, compare and take up space.
4, active liquid cooling: to the heat sink of set of cells one carrying liqs runner of configuration, set of cells is fitted with heat sink.Coolant flows through heat sink, and heat set of cells sent is taken away, and then coolant flows into cooling-water machine.Cooling-water machine has compressor assembly formula, also has semiconductor refrigeration sheet type.Coolant returns heat sink after cooling down in cooling-water machine.The caloric value of high power battery group is the biggest, it is therefore desirable to the cold of cooling-water machine also big, then the power of cooling-water machine is the biggest.During electric automobile runs, if battery cooling system takies the biggest electrical power consumed, the power of automobile can be affected.
Above-mentioned battery radiating mode there is also that heat-sinking capability is not enough, volume is too big, cost is high or the problem such as power consumption is the highest, is badly in need of a kind of electrokinetic cell heat sink conception that can solve the problem that the problems referred to above.
Summary of the invention
Present invention aims to existing electrokinetic cell heat radiation deficiency, it is provided that a kind of rational in infrastructure, heat-sinking capability good, easy to use, power consumption is little and the electrokinetic cell heat sink based on phase-change material energy storage of compact.
To achieve these goals, present invention employs techniques below scheme:
A kind of electrokinetic cell heat sink based on phase-change material energy storage, including electrokinetic cell, coolant loop module and refrigeration module, electrokinetic cell is connected composition heat exchange circulation with coolant loop module；Heat exchange is carried out between coolant loop module and refrigeration module；Electrokinetic cell electrically connects with coolant loop module and refrigeration module respectively.
Further, described coolant loop module includes water pump, accumulation of energy groove, vaporizer and water tank, water tank, water pump and vaporizer pass sequentially through water pipe and are connected with each other, the water pipe being connected between described water pump and vaporizer passes accumulation of energy groove, water pump electrically connects with electrokinetic cell, accumulation of energy groove is connected with electrokinetic cell, is provided with accumulation of energy implant in accumulation of energy groove.
Further, described refrigeration module includes compressor, condenser, choke valve and vaporizer, compressor, condenser, choke valve and vaporizer are in turn connected to form kind of refrigeration cycle, and condenser is connected with vaporizer by choke valve, and compressor electrically connects with electrokinetic cell.Circulatory mediator in refrigeration module is coolant.
Further, described choke valve is capillary tube, heating power expansion valve or electromagnetic valve.
Further, described accumulation of energy implant is phase-change material implant, phase-change material implant includes the mixture of paraffin, graphite and activated carbon, paraffin is mixed with the material such as graphite and activated carbon, paraffin is paraffins mixture, there is no definite melting point, the fusing point that can need by adjusting its composition to obtain.Wax phase change latent heat is high, stable chemical nature, but heat conductivity is low, adds graphite and activated carbon can improve its heat conductivility.
Further, being provided with heating rod and temperature sensor in described water tank, heating rod is placed in water tank, gives coolant heat temperature raising when the temperature is too low, and coolant can be water or anti-icing fluid.
Further, described accumulation of energy groove contacts with electrokinetic cell and is fitted and connected, use the form touched directly against splice grafting can effectively by the work of electrokinetic cell time the heat that sends swap with accumulation of energy groove, can effectively control the temperature of electrokinetic cell, make electrokinetic cell can reach optimal duty always, promote service life and the work efficiency of electrokinetic cell.In particular cases can also will pass through water circulation heat exchange between electrokinetic cell and accumulation of energy groove by concatenation water pump.
Further, described compressor is direct current compressor, rated voltage 24V or 48V.
A kind of electrokinetic cell cool-down method based on phase-change material energy storage, substantial amounts of latent heat is stored first with after the phase change material releases heat solidification in the accumulation of energy groove in upper described electrokinetic cell heat sink based on phase-change material energy storage, produce the phase-change material absorption that heat will be touched in the accumulation of energy groove of connection when electrokinetic cell is powered or charges, make electrokinetic cell maintain more steady temperature.Heat is passed to coolant loop module thus is kept the state of phase-change material by the phase-change material in accumulation of energy groove simultaneously.
Further, described coolant loop module also carries out heat exchange with refrigeration module；
The described temperature sensor in the water tank in coolant loop module, monitor the temperature of coolant in real time, when coolant temperature exceedes the setting value upper limit, refrigeration module work starts refrigeration, by water circulation, the heat in accumulation of energy groove is derived, when coolant temperature is less than setting value lower limit, in water tank, heating rod is started working, by water circulation, heat is taken in the phase-change material in accumulation of energy groove, maintain the temperature constant of accumulation of energy groove with this.
Operation principle:
When electrokinetic cell does not works, refrigeration system is started working, produced cold is sent to coolant in vaporizer, at this moment coolant promotes lower through flow circuit at water pump, coolant absorbs heat and is all solidified by the liquid paraffin in accumulation of energy groove, paraffin, in process of setting, can be released substantial amounts of heat and be absorbed by coolant simultaneously.After paraffin is fully cured, temperature sensor senses no longer heats up to coolant, and refrigeration system quits work.Now, accumulation of energy groove just stores substantial amounts of cold, cool down when working for electrokinetic cell.When outside air temperature is the lowest, in accumulation of energy groove, phase-change material temperature is the lowest is also unfavorable for that electrokinetic cell works, now heating rod work in water tank, inputs heat, suitable temperature required during to maintain electrokinetic cell to work by coolant circulation in accumulation of energy groove.
Phase-change material in accumulation of energy groove stores substantial amounts of latent heat after solidification, and temperature is the most constant in phase transition process；Produce heat when electrokinetic cell is powered or charges to be absorbed by the phase-change material in accumulation of energy groove, and maintain more steady temperature.Phase-change material in accumulation of energy groove is circulated by coolant brings into heat or leads away, to realize the constant of temperature.
Beneficial effects of the present invention:
1, the accumulation of energy groove of the present invention utilizes the characteristic that the latent heat of phase change of paraffin is the highest.By refrigeration system, using compressor, condenser and vaporizer that efficiency value is higher, its refrigerating capacity is big.The when of electrokinetic cell work, its heat major part produced all can be absorbed in melting process by mineral wax mixture, and fraction is scattered in environment by refrigeration system, thus reaches the purpose of electrokinetic cell cooling.Use the mode of this cooling so that the cooling effect of the present invention maintains the most constant and suitable operating temperature when can make battery operated.
2, depending on the accumulation of energy groove of the present invention and the heat exchange mode of electrokinetic cell are according to the concrete condition of battery, thus flexible and changeable.Compressor, condenser, vaporizer and water pump in the present invention is all to use microminiature, and compressor and water pump all use direct current, direct dynamic battery to power.Coolant is circular flow, water tank have only to the least just, can guarantee that coolant can circulate just enough.Therefore, the size of this chiller is less, and the vehicle body space taken is less.
3, the mineral wax mixture used in the present invention, reasonably designs its phase transition temperature, electrokinetic cell can be made preferably to play its performance, and improve safety.Ensureing in electric motor car running, as long as the paraffin in accumulation of energy groove melts the most completely, its temperature will keep constant, and then keeps the temperature constant of set of cells, it is ensured that electrokinetic cell works under constant temperature, thus reaches to increase life-span and the purpose of service efficiency.
4, the present invention is not when electrokinetic cell works for a long time, phase-change material in accumulation of energy groove can be by storing big energy with the natural heat dissipation of environment, when electrokinetic cell is started working, a large amount of calorific potentials being stored in accumulation of energy groove are well utilized, and have effectively saved energy.
5, the present invention utilizes the characteristic of phase-change material accumulation of energy, situation in electrokinetic cell different operating state different heat amount is talked about, can effectively alleviate and equilibrium temperature, electrokinetic cell is made can well to maintain constant and suitable temperature in whole work process, effectively raise life-span and the efficiency for charge-discharge of electrokinetic cell, more provide the safety of electrokinetic cell.
Accompanying drawing explanation
Accompanying drawing 1 is the electrokinetic cell heat sink module connection diagram based on phase-change material energy storage of embodiment.
Figure identifies: A-coolant loop module, B-refrigeration module, 1-electrokinetic cell, 2-water pump, 3-water tank, 4-heating rod, 5-temperature sensor, 6-vaporizer, 7-accumulation of energy groove, 8-choke valve, 9-condenser, 10-compressor.
Detailed description of the invention
With reference to the accompanying drawings, described in further detail to the detailed description of the invention of the present invention.
Embodiment 1:
As it is shown in figure 1, a kind of electrokinetic cell heat sink based on phase-change material energy storage, including electrokinetic cell 1, coolant loop module A and refrigeration module B, electrokinetic cell 1 is connected composition heat exchange circulation with coolant loop module A；Heat exchange is carried out between coolant loop module A and refrigeration module B；Electrokinetic cell 1 electrically connects with coolant loop module A and refrigeration module B respectively.
Described coolant loop module A includes water pump 2, accumulation of energy groove 7, vaporizer 6 and water tank 3, water tank 3, water pump 2 pass sequentially through water pipe with vaporizer 6 and are connected with each other, the water pipe being connected between described water pump 2 and vaporizer 6 passes accumulation of energy groove 7, water pump 2 electrically connects with electrokinetic cell 1, accumulation of energy groove 7 is connected with electrokinetic cell 1, accumulation of energy implant it is provided with in accumulation of energy groove 7, accumulation of energy implant is phase-change material implant, phase-change material implant includes the mixture of paraffin, graphite and activated carbon, is provided with heating rod 4 and temperature sensor 5 in water tank 3.Accumulation of energy groove 7 is fitted and connected by directly contacting with electrokinetic cell 1.
Described refrigeration module B includes condenser 9 and compressor 10, condenser 9, compressor 10 and vaporizer 6 are in turn connected to form kind of refrigeration cycle, compressor 10 is the direct current compressor of 4V for rated voltage, condenser 9 is connected with vaporizer 6 by choke valve 8, compressor 10 electrically connects with electrokinetic cell 1, and choke valve 8 is capillary tube.
A kind of electrokinetic cell cool-down method based on phase-change material energy storage, substantial amounts of latent heat is stored first with after the phase change material releases heat solidification in the accumulation of energy groove 7 in upper described electrokinetic cell heat sink based on phase-change material energy storage, produce the phase-change material absorption that heat will be touched in the accumulation of energy groove 7 of connection when electrokinetic cell 1 is powered or charges, make electrokinetic cell 1 maintain more steady temperature.Heat is passed to coolant loop module A thus is kept the state of phase-change material by the phase-change material in accumulation of energy groove 7 simultaneously.
Described coolant loop module A also carries out heat exchange with refrigeration module B；The temperature sensor 5 in water tank 3 in coolant loop module A, monitor the temperature of coolant in real time, when coolant temperature exceedes the setting value upper limit, refrigeration module B work starts refrigeration, by water circulation, the heat in accumulation of energy groove 7 is derived, when coolant temperature is less than setting value lower limit, in water tank, heating rod 4 is started working, by water circulation, heat is taken in the phase-change material in accumulation of energy groove 7, maintain the temperature constant of accumulation of energy groove 7 with this.
Embodiment 2:
As it is shown in figure 1, a kind of electrokinetic cell heat sink based on phase-change material energy storage, including electrokinetic cell 1, coolant loop module A and refrigeration module B, electrokinetic cell 1 is connected composition heat exchange circulation with coolant loop module A；Heat exchange is carried out between coolant loop module A and refrigeration module B；Electrokinetic cell 1 electrically connects with coolant loop module A and refrigeration module B respectively.
Described coolant loop module A includes water pump 2, accumulation of energy groove 7, vaporizer 6 and water tank 3, water tank 3, water pump 2 pass sequentially through water pipe with vaporizer 6 and are connected with each other, the water pipe being connected between described water pump 2 and vaporizer 6 passes accumulation of energy groove 7, water pump 2 electrically connects with electrokinetic cell 1, accumulation of energy groove 7 is connected with electrokinetic cell 1, accumulation of energy implant it is provided with in accumulation of energy groove 7, accumulation of energy implant is phase-change material implant, phase-change material implant includes the mixture of paraffin, graphite and activated carbon, is provided with heating rod 4 and temperature sensor 5 in water tank 3.Accumulation of energy groove 7 is connected by adding water pump formation water circulation with electrokinetic cell 1.
Described refrigeration module B includes condenser 9 and compressor 10, condenser 9, compressor 10 and vaporizer 6 are in turn connected to form kind of refrigeration cycle, compressor 10 is the direct current compressor of 48V for rated voltage, condenser 9 is connected with vaporizer 6 by choke valve 8, compressor 10 electrically connects with electrokinetic cell 1, and choke valve 8 is heating power expansion valve.
Embodiment 3:
As it is shown in figure 1, a kind of electrokinetic cell heat sink based on phase-change material energy storage, including electrokinetic cell 1, coolant loop module A and refrigeration module B, electrokinetic cell 1 is connected composition heat exchange circulation with coolant loop module A；Heat exchange is carried out between coolant loop module A and refrigeration module B；Electrokinetic cell 1 electrically connects with coolant loop module A and refrigeration module B respectively.
Described coolant loop module A includes water pump 2, accumulation of energy groove 7, vaporizer 6 and water tank 3, water tank 3, water pump 2 pass sequentially through water pipe with vaporizer 6 and are connected with each other, the water pipe being connected between described water pump 2 and vaporizer 6 passes accumulation of energy groove 7, water pump 2 electrically connects with electrokinetic cell 1, accumulation of energy groove 7 is connected with electrokinetic cell 1, accumulation of energy implant it is provided with in accumulation of energy groove 7, accumulation of energy implant is phase-change material implant, phase-change material implant includes the mixture of paraffin, graphite and activated carbon, is provided with heating rod 4 and temperature sensor 5 in water tank 3.Accumulation of energy groove 7 is fitted and connected by directly contacting with electrokinetic cell 1.
Described refrigeration module B includes condenser 9 and compressor 10, condenser 9, compressor 10 and vaporizer 6 are in turn connected to form kind of refrigeration cycle, compressor 10 is the direct current compressor of 24V for rated voltage, condenser 9 is connected with vaporizer 6 by choke valve 8, compressor 10 electrically connects with electrokinetic cell 1, and choke valve 8 is electromagnetic valve.
Operation principle:
When electrokinetic cell 1 does not works, refrigeration module B starts working, produced cold is sent to coolant in vaporizer 6, at this moment coolant promotes lower through flow circuit at water pump 2, coolant absorbs heat and is all solidified by the liquid paraffin in accumulation of energy groove 7, paraffin, in process of setting, can be released substantial amounts of heat and be absorbed by coolant simultaneously.After paraffin is fully cured, temperature sensor sense 5 should be arrived coolant and no longer be heated up, and refrigeration system quits work.Now, accumulation of energy groove just stores substantial amounts of cold, cool down when working for electrokinetic cell 1.When outside air temperature is the lowest, in accumulation of energy groove 7, phase-change material temperature is the lowest is also unfavorable for that electrokinetic cell 1 works, and now in water tank 3, heating rod 4 works, and inputs heat by coolant circulation in accumulation of energy groove 7, to maintain the suitable temperature required when working of electrokinetic cell 1.
Phase-change material in accumulation of energy groove 7 stores substantial amounts of latent heat after solidification, and temperature is the most constant in phase transition process；Produce heat when electrokinetic cell 1 is powered or charges to be absorbed by the phase-change material in accumulation of energy groove 7, and maintain more steady temperature.Phase-change material in accumulation of energy groove 7 is circulated by coolant brings into heat or leads away, to realize the constant of temperature.
Further explanation:
Heat is produced when electrokinetic cell is powered or charges, electrokinetic cell carries out heat exchange with accumulation of energy groove by the way of heat exchange, phase-change material in accumulation of energy groove absorbs the heat of electrokinetic cell and undergoes phase transition, then heat is passed to the coolant of coolant loop module by phase-change material again, coolant after temperature rising is led to the coolant of vaporizer and refrigeration module and is carried out heat exchange, compressor and condenser in refrigeration module are lowered the temperature to coolant, coolant reduces the temperature of coolant again by heat exchange, coolant ensures phase-change material incomplete transformation, thus reach to circulate the purpose keeping constant temperature to electrokinetic cell cooling；
Monitored the temperature of coolant in real time by temperature sensor, after coolant temperature raises and arrives setting value, refrigeration module work starts refrigeration；When coolant temperature too low arrival setting value then passes through heating rod to coolant heat temperature raising.
Embodiment described above, simply more preferably one of embodiment of the present invention, the usual variations and alternatives that those skilled in the art are carried out in the range of technical solution of the present invention all should comprise within the scope of the present invention.
Claims (10)
1. an electrokinetic cell heat sink based on phase-change material energy storage, is characterized in that: include electrokinetic cell (1), coolant loop module (A) and refrigeration module (B), and electrokinetic cell (1) is connected composition heat exchange circulation with coolant loop module (A)；Heat exchange is carried out between coolant loop module (A) and refrigeration module (B)；Electrokinetic cell (1) electrically connects with coolant loop module (A) and refrigeration module (B) respectively.
Electrokinetic cell heat sink based on phase-change material energy storage the most according to claim 1, it is characterized in that: described coolant loop module (A) includes water pump (2), accumulation of energy groove (7), vaporizer (6) and water tank (3), water tank (3), water pump (2) pass sequentially through water pipe with vaporizer (6) and are connected with each other, the water pipe being connected between described water pump (2) and vaporizer (6) passes accumulation of energy groove (7), water pump (2) electrically connects with electrokinetic cell (1), accumulation of energy groove (7) is connected with electrokinetic cell (1), and accumulation of energy groove is provided with accumulation of energy implant in (7).
Electrokinetic cell heat sink based on phase-change material energy storage the most according to claim 1, it is characterized in that: described refrigeration module (B) includes condenser (9) and compressor (10), condenser (9), compressor (10) and vaporizer (6) are in turn connected to form kind of refrigeration cycle, condenser (9) is connected with vaporizer (6) by choke valve (8), and compressor (10) electrically connects with electrokinetic cell (1).
Electrokinetic cell heat sink based on phase-change material energy storage the most according to claim 2, is characterized in that: described accumulation of energy implant is phase-change material implant, phase-change material implant includes the mixture of paraffin, graphite and activated carbon.
Electrokinetic cell heat sink based on phase-change material energy storage the most according to claim 2, is characterized in that: be provided with heating rod (4) and temperature sensor (5) in described water tank (3).
Electrokinetic cell heat sink based on phase-change material energy storage the most according to claim 2, is characterized in that: described accumulation of energy groove (7) is fitted and connected with electrokinetic cell (1) by directly contacting or forms water circulation connection by adding water pump.
Electrokinetic cell heat sink based on phase-change material energy storage the most according to claim 3, is characterized in that: described compressor (10) is direct current compressor.
Electrokinetic cell heat sink based on phase-change material energy storage the most according to claim 3, is characterized in that: described choke valve (8) is capillary tube, heating power expansion valve or electromagnetic valve.
9. an electrokinetic cell cool-down method based on phase-change material energy storage, it is characterized in that: after solidifying first with the phase change material releases heat in the accumulation of energy groove (7) in the electrokinetic cell heat sink based on phase-change material energy storage described in the claims 1-8, store substantial amounts of latent heat, produce the phase-change material absorption that heat will be touched in the accumulation of energy groove (7) of connection when electrokinetic cell (1) is powered or charges, make electrokinetic cell (1) maintain more steady temperature.Heat is passed to coolant loop module (A) thus is kept the state of phase-change material by the phase-change material in accumulation of energy groove (7) simultaneously.
Electrokinetic cell cool-down method based on phase-change material energy storage the most according to claim 9, is characterized in that: described coolant loop module (A) also carries out heat exchange with refrigeration module (B)；
The described temperature sensor (5) in the water tank (3) in coolant loop module (A), monitor the temperature of coolant in real time, when coolant temperature exceedes the setting value upper limit, refrigeration module (B) work starts refrigeration, by water circulation, the heat in accumulation of energy groove (7) is derived, when coolant temperature is less than setting value lower limit, in water tank, heating rod (4) is started working, by water circulation, heat is taken in the phase-change material in accumulation of energy groove (7), maintain the temperature constant of accumulation of energy groove (7) with this.
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