CN110165102A - A kind of injection-absorption thermodynamic cycle battery thermal management system and its working method - Google Patents
A kind of injection-absorption thermodynamic cycle battery thermal management system and its working method Download PDFInfo
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- CN110165102A CN110165102A CN201910257120.2A CN201910257120A CN110165102A CN 110165102 A CN110165102 A CN 110165102A CN 201910257120 A CN201910257120 A CN 201910257120A CN 110165102 A CN110165102 A CN 110165102A
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims description 117
- 238000002347 injection Methods 0.000 claims description 35
- 239000007924 injection Substances 0.000 claims description 35
- 239000012530 fluid Substances 0.000 claims description 26
- 238000001816 cooling Methods 0.000 claims description 21
- 239000003507 refrigerant Substances 0.000 claims description 17
- 239000007921 spray Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 10
- 238000009792 diffusion process Methods 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 9
- 239000003063 flame retardant Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000006837 decompression Effects 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 208000002925 dental caries Diseases 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 239000004962 Polyamide-imide Substances 0.000 claims 1
- 229920002312 polyamide-imide Polymers 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 238000009835 boiling Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 4
- 230000032258 transport Effects 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000012782 phase change material Substances 0.000 description 3
- NOPJRYAFUXTDLX-UHFFFAOYSA-N 1,1,1,2,2,3,3-heptafluoro-3-methoxypropane Chemical compound COC(F)(F)C(F)(F)C(F)(F)F NOPJRYAFUXTDLX-UHFFFAOYSA-N 0.000 description 2
- HRXXERHTOVVTQF-UHFFFAOYSA-N 1,1,1,2,3,3,3-heptafluoro-2-methoxypropane Chemical compound COC(F)(C(F)(F)F)C(F)(F)F HRXXERHTOVVTQF-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000003949 imides Chemical class 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000005713 exacerbation Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 244000045947 parasite Species 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
-
- 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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a kind of injection-absorption thermodynamic cycle battery thermal management system and its working methods, including heat exchanger, cell package case, the first reversal valve, the second reversal valve, third reversal valve, the 4th reversal valve, the 5th reversal valve, the 6th reversal valve, injector, first circulation pump, second circulation pump, first throttle valve and second throttle, the system and its working method enable to battery temperature stable and are uniformly maintained near the boiling point of working medium.
Description
Technical field
The invention belongs to battery temperature control technology fields, are related to a kind of injection-absorption thermodynamic cycle battery thermal management system
System and its working method.
Background technique
In recent years, it has obtained answering extensively in communications and transportation and extensive energy storage field using lithium battery as the secondary cell of representative
With, it is incident, it is the frequent heat management problems for causing major accident.It can be generated during charging and discharging lithium battery a large amount of
Heat, in addition in practical applications, battery is not to exist in the form of monomer, but series/parallel is at battery pack, sometimes also in
In sealing device, if the heat generated cannot timely and effectively be discharged, battery temperature can be made beyond Reasonable area after assembling excess
Between, the working performance of severe exacerbation battery.When the temperature is excessively high, thermal runaway can occur for battery.In addition, a large amount of single batteries pass through
Series, parallel mode forms battery modules, needs to guarantee that battery pack temperature is evenly distributed, otherwise will lead to battery overcharge or mistake
Problem is put, battery life and security reliability are influenced.Under low temperature condition, needs to heat battery, otherwise will affect battery
Energy density, or even inside battery structure can be destroyed.
Battery thermal management system (BMS) be by battery is cooling or heating makes battery work in suitable temperature range,
Control the temperature difference between internal battery pack difference monocell in range appropriate.Current battery heat management system is according to cold
But medium difference is divided into ventilating and cooling, liquid are cooling, phase-change material is cooling etc., and wherein ventilating and cooling uses air for circulation substantially
Working medium takes away heat by the heat convection in battery surface, and this mode has several advantages: structure is simple, manufacture and maintenance
At low cost, working medium does not have to carry, and atmospheric density and viscosity are small, and parasitic power consumption is low.But its disadvantage is also it is clear that air specific heat
Hold low, radiating efficiency is low, causes battery pack and the inside battery temperature difference big, and system can generate biggish vibration and noise, sucks
Air may be containing impurity etc..Liquid cooling need to then establish cold plate structure in battery pack, through liquid working substance in cold plate
Circulation realize heat exchange, common cycle fluid be water and ethylene glycol mixed liquor.Compared to air, the specific heat capacity of liquid working substance
Very big, heat transfer effect is also more preferable, but incident is that cycle fluid own wt is big, in addition cold plate structure, occupies more bodies
Long-pending and weight.Heavier cycle fluid and bigger flow resistance cause the parasitic power consumption of circulation big.Still due to heat exchange mode
It is using working medium sensible heat, so inside battery still has the temperature difference.In recent years, with battery pack scale and power continuous increase and
Requirement to fast charging and discharging performance is higher and higher, and ventilation and liquid cooling based on working medium sensible heat are more difficult to meet the requirements, and adopts
When doing working medium with phase-change material, battery is cooled down or heated using the latent heat of working medium, heat exchange efficiency is high, can more make battery phase
To stablizing and being uniformly maintained near the boiling point of working medium, there is very big advantage.The current phase-change material type of cooling is main
It is based on solid material, such as paraffin-graphite composite material, but this mode absorbs heat only by phase transformation, it is also necessary to its
Its means takes away heat, and significant volume change also limits its application when phase transformation.
Summary of the invention
It is an object of the invention to overcome the above-mentioned prior art, a kind of injection-absorption thermodynamic cycle electricity is provided
Pond heat management system and its working method, the system and its working method enable to battery temperature stable and are uniformly maintained at
Near the boiling point of working medium.
In order to achieve the above objectives, injection of the present invention-absorption thermodynamic cycle battery thermal management system include heat exchanger,
Cell package case, the first reversal valve, the second reversal valve, third reversal valve, the 4th reversal valve, the 5th reversal valve, the 6th reversal valve,
Injector, first circulation pump, second circulation pump, first throttle valve and second throttle；
The liquid inlet of heat exchanger is connected with the position the B of the first reversal valve connector, the C position connector of the first reversal valve with
The fluid-mixing outlet of the H position connector and injector of 4th reversal valve is connected, the gas access of injector and the second commutation
The position the B connector of valve is connected, and the C position connector of the second reversal valve is connected with the gas vent of cell package case, and second changes
It is connected to the H position connector of valve with the gas vent of heat exchanger, the liquid of B the position connector and cell package case of the 4th reversal valve
Body entrance is connected, and the C position connector of the 4th reversal valve passes through the position the H connector of pipeline and third reversal valve, second throttle
Outlet and second circulation pump outlet be connected, the liquid inlet of injector is connected with the position the B of third reversal valve connector,
The position H connector, the outlet of first throttle valve and the going out for first circulation pump of the C position connector and the first reversal valve of third reversal valve
Mouth is connected, and the liquid outlet of cell package case is connected with the position the B connector of the 5th reversal valve, the position the H company of the 5th reversal valve
Interface is connected with the entrance of first throttle valve, and the C position connector of the 5th reversal valve is connected with the entrance that first circulation pumps, and changes
The liquid outlet of hot device is connected with the position the B connector of the 6th reversal valve, the C position connector and second throttle of the 6th reversal valve
Entrance be connected, the H position connector of the 6th reversal valve is connected with the entrance that second circulation pumps.
It is provided with battery thermal protection body in cell package case, several cavitys, each sky are provided in the battery thermal protection body
It is intracavitary to be mounted on battery, wherein battery thermal protection body is porous media structure.
Gas vent and liquid inlet on cell package case are set to the top of cell package case, the liquid of cell package case
Body outlet is located at the bottom of cell package case, is provided between the top of battery thermal protection body and the inner wall of cell package box top
First grid with holes.
The gas vent of heat exchanger and liquid inlet are all set in the top of heat exchanger, and the liquid outlet of heat exchanger, which is located at, to be changed
The bottom of hot device, and the inside at the top of heat exchanger is provided with the second grid with holes.
The material of battery thermal protection body be flame-retardant materials, the flame-retardant materials be modified hydrophilic fire-retardant polyester fibre,
Highly hydrophilic polyamide acid imide fiber, PBI fibre or diatomite.
Enhanced heat exchange fin is equipped on the inner wall and outside wall surface of heat exchanger.
Injection of the present invention-absorption thermodynamic cycle battery thermal management system working method the following steps are included:
When battery needs cooling, then by the first reversal valve, the second reversal valve, third reversal valve, the 4th reversal valve, the 5th
C position connector in reversal valve and the 6th reversal valve is connected with B connectors, the circulating liquid working medium inside cell package case
Liquid outlet and first circulation pump through cell package case are delivered in injector, then are sprayed by the jet pipe of injector interior, spray
Gaseous recycle working medium of the jet stream injection from cell package case of pipe high speed injection, the liquid refrigerant of injection and the gaseous state by injection
Working medium is sufficiently mixed in the diffuser pipe of injector, forms gas-liquid mixture fluid, the gas-liquid mixture fluid is in injector
Speed reduces in diffuser pipe, and pressure increases, while gaseous working medium is absorbed by liquid refrigerant in mixed process, and gaseous working medium is converted into
Liquid simultaneously discharges heat, forms high temperature high pressure liquid, and the high temperature high pressure liquid enters heat exchange through the liquid inlet of heat exchanger
In device, and through condensing heat-exchange, release then occur with external cold source on the second grid spray to the heat exchange wall surface inside heat exchanger
Heat, the fluid after cooling is flowed out by the liquid outlet of heat exchanger, and cell package case is delivered to after second throttle is depressured
In, it is then uniformly sprayed on battery thermal protection body through the first grid, since battery thermal protection body is porous media structure, cooling
Fluid afterwards passes through battery thermal protection body diffusion transport to the surface of battery, absorbs the heat of battery and evaporates to form gaseous state work
Matter, battery temperature decline, the gaseous working medium pass through the diffusion outflow of battery thermal protection body, then go out from the gas of cell package case
It enters in the gas interface of injector to enter after mouth outflow and recycle next time.
When battery needs to heat, then by the first reversal valve, the second reversal valve, third reversal valve, the 4th reversal valve, the 5th
H position connector in reversal valve and the 6th reversal valve is connected with B connectors, and the circulating liquid working medium in heat exchanger is through exchanging heat
The liquid outlet of device flows out, and is delivered in the liquid inlet of injector through second circulation pump, and circulating liquid working medium is by injector
Interior jet pipe sprays, wherein gaseous recycle working medium of the jet stream injection of high speed injection from heat exchanger, the liquid refrigerant of injection
It is sufficiently mixed in diffuser pipe in injector with by the gaseous working medium of injection, forms gas-liquid mixture fluid, the gas-liquid mixed
Fluid speed reduction in the diffuser pipe in injector, pressure increases, while gaseous working medium is inhaled by liquid refrigerant in mixed process
It receives, gaseous working medium is converted into liquid and discharges heat, forms high temperature high pressure liquid, and the high temperature high pressure liquid enters cell package
It in case, then uniformly sprays on battery thermal protection body through the first grid, in cell package case, unabsorbed gaseous working medium is cold
It coagulating for liquid and discharges heat, the liquid refrigerant with higher temperature passes through battery thermal protection body diffusion transport to battery surface,
And battery is transferred heat to, realize heating and heat preservation to battery, liquid working substance passes through battery thermal protection body and falls after cooling
To the bottom of cell package case, the liquid refrigerant in cell package bottom portion is flowed out by the liquid outlet of cell package case, and through the
It is delivered in the liquid inlet of heat exchanger after the decompression of one throttle valve, then uniformly sprays the internal heat to heat exchanger through the second grid
On wall surface, heat exchange then is carried out with external heat source, the heat of external heat source is absorbed and is evaporated to gaseous working medium, the gaseous state work
Enter in the gas interface that matter enters injector after the outflow of the gas vent of heat exchanger and recycles next time.
The invention has the following advantages:
Injection of the present invention-absorption thermodynamic cycle battery thermal management system and its working method, utilize cycle fluid
Latent heat of phase change so that heat exchange efficiency greatly reinforces, while enabling to the temperature of battery stable and being uniformly maintained at working medium
Boiling point near, temperature control excellent, while saving large-scale fan or the occupied space of cold plate structure and weight, in addition,
It should be noted that the pressure when present invention is using injector, first throttle valve and second throttle change working medium circulation, thus
So that condensation temperature is higher than evaporating temperature, while saving power consumption biggish compressor, guarantee efficient heat transfer effect.In addition,
When gas-liquid working medium is sufficiently mixed in injector, liquid refrigerant can also play the role of absorption to gaseous working medium, accelerate gaseous state
The release of working medium heat simultaneously improves cycle efficieny.
Further, battery thermal protection body is porous media structure, does not need passively to submerge battery in whole or in part
In cycle fluid, reduce the carrying amount of cycle fluid, mitigates weight and parasite cycle power consumption.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Wherein, 1 be cell package case, 2 be the first grid, 3 be battery thermal protection body, 4 be battery, 5 be the 5th reversal valve,
6 it is first throttle valve, 7 be first circulation pump, 8 be heat exchanger, 9 be the 6th reversal valve, 10 be second throttle, 11 is second to follow
Ring pump, 12 be the second grid, 13 be the first reversal valve, 14 be injector, 15 be the second reversal valve, 16 be third reversal valve, 17
For the 4th reversal valve.
Specific embodiment
The invention will be described in further detail with reference to the accompanying drawing:
With reference to Fig. 1, injection of the present invention-absorption thermodynamic cycle battery thermal management system includes heat exchanger 8, battery envelope
The 1, first reversal valve 13 of vanning, the second reversal valve 15, third reversal valve 16, the 4th reversal valve 17, the 5th reversal valve the 5, the 6th change
To valve 9, injector 14, first circulation pump 7, second circulation pump 11, first throttle valve 6 and second throttle 10；Described first changes
To valve 13, injector 14, the second reversal valve 15, third reversal valve 16, the 4th reversal valve 17, the 5th reversal valve 5 and the 6th commutation
Valve 9 is two-bit triplet reversal valve；The liquid inlet of heat exchanger 8 is connected with the position the B connector of the first reversal valve 13, and first changes
It is connected to the C position connector of valve 13 with the outlet of the fluid-mixing of the H position connector of the 4th reversal valve 17 and injector 14, sprays
The gas access of device 14 is connected with the position the B connector of the second reversal valve 15, and the C position connector and battery of the second reversal valve 15 seal
The gas vent of vanning 1 is connected, and the H position connector of the second reversal valve 15 is connected with the gas vent of heat exchanger 8, and the 4th changes
It is connected to the B position connector of valve 17 with the liquid inlet of cell package case 1, the position the C connector of the 4th reversal valve 17 passes through pipe
Road is connected with the outlet of the position the H of third reversal valve 16 connector, the outlet of second throttle 10 and second circulation pump 11, sprays
The liquid inlet of device 14 is connected with the position the B of third reversal valve 16 connector, and the C position connector of third reversal valve 16 is changed with first
It is connected to the position the H connector of valve 13, the outlet of first throttle valve 6 and the outlet of first circulation pump 7, the liquid of cell package case 1
Body outlet is connected with the position the B connector of the 5th reversal valve 5, the H position connector of the 5th reversal valve 5 and entering for first throttle valve 6
Mouthful be connected, the C position connector of the 5th reversal valve 5 is connected with the entrance that first circulation pumps 7, the liquid outlet of heat exchanger 8 and
The position the B connector of 6th reversal valve 9 is connected, and the C position connector of the 6th reversal valve 9 is connected with the entrance of second throttle 10
Logical, the H position connector of the 6th reversal valve 9 is connected with the entrance that second circulation pumps 11, wherein the inner wall of heat exchanger 8 and outside
Enhanced heat exchange fin is equipped on wall surface.
It is provided with battery thermal protection body 3 in cell package case 1, is provided with several cavitys in the battery thermal protection body 3, respectively
Battery 4 is mounted in cavity, wherein battery thermal protection body 3 is porous media structure.
Gas vent and liquid inlet on cell package case 1 are set to the top of cell package case 1, cell package case 1
Liquid outlet be located at the bottom of cell package case 1, the inner wall at 1 top of top and cell package case of battery thermal protection body 3 it
Between be provided with the first grid 2 with holes；The gas vent of heat exchanger 8 and liquid inlet are all set in the top of heat exchanger 8, heat exchange
The liquid outlet of device 8 is located at the bottom of heat exchanger 8, and the inside at 8 top of heat exchanger is provided with the second grid 12 with holes.
The injection of the present invention-absorption thermodynamic cycle battery thermal management system working method includes following step
It is rapid:
When battery 4 needs cooling, then the first reversal valve 13, the second reversal valve 15, third reversal valve the 16, the 4th are commutated
C position connector in valve 17, the 5th reversal valve 5 and the 6th reversal valve 9 is connected with B connectors, inside cell package case 1
Liquid outlet and first circulation pump 7 of the circulating liquid working medium through cell package case 1 are delivered in injector 14, then by injector 14
Internal jet pipe sprays, gaseous recycle working medium of the jet stream injection from cell package case 1 of jet pipe high speed injection, the liquid of injection
Working medium is sufficiently mixed in the diffuser pipe of injector 14 with by the gaseous working medium of injection, forms gas-liquid mixture fluid, the gas-liquid
Mixed working fluid in the diffuser pipe in injector 14 speed reduce, pressure increase, while in mixed process gaseous working medium by liquid
Working medium absorbs, and gaseous working medium is converted into liquid and discharges heat, forms high temperature high pressure liquid, the high temperature high pressure liquid is through exchanging heat
The liquid inlet of device 8 enters in heat exchanger 8, and sprays through the second grid 12 onto the heat exchange wall surface inside heat exchanger 8, then
Condensing heat-exchange occurs with external cold source, to discharge heat, fluid after cooling is flowed out by the liquid outlet of heat exchanger 8, and through the
It is delivered in cell package case 1 after the decompression of two throttle valves 10, is then uniformly sprayed onto battery thermal protection body 3 through the first grid 2,
Since battery thermal protection body 3 is porous media structure, the fluid after cooling passes through 3 diffusion transport of battery thermal protection body to battery 4
Surface, absorb battery 4 heat and evaporate to form gaseous working medium, 4 temperature of battery decline, the gaseous working medium pass through battery heat
The diffusion outflow of protection body 3, then entered after the outflow of the gas vent of cell package case 1 in the gas interface of injector 14 into
Row recycles next time.
When battery 4 needs to heat, then the first reversal valve 13, the second reversal valve 15, third reversal valve the 16, the 4th are commutated
H position connector in valve 17, the 5th reversal valve 5 and the 6th reversal valve 9 is connected with B connectors, the circulation fluid in heat exchanger 8
Body working medium is flowed out through the liquid outlet of heat exchanger 8, and is delivered in the liquid inlet of injector 14 through second circulation pump 11, is recycled
Liquid working substance by injector 14 jet pipe spray, high speed injection jet stream injection from heat exchanger 8 gaseous recycle working medium,
The liquid refrigerant of injection is sufficiently mixed in the diffuser pipe in injector 14 with by the gaseous working medium of injection, forms gas-liquid mixed stream
Body, gas-liquid mixture fluid speed in the diffuser pipe in injector 14 reduce, and pressure increases, while gaseous state in mixed process
Working medium is absorbed by liquid refrigerant, and gaseous working medium is converted into liquid and discharges heat, forms high temperature high pressure liquid, the high temperature and pressure
Liquid enters in cell package case 1, then uniformly sprays onto battery thermal protection body 3 through the first grid 2, in cell package case 1,
Unabsorbed gaseous working medium is condensed into liquid and discharges heat, and the liquid refrigerant with higher temperature passes through battery thermal protection body
3 diffusion transports transfer heat to battery 4 to 4 surface of battery, realize heating and heat preservation to battery 4, liquid work after cooling
Matter passes through the bottom that battery thermal protection body 3 falls to cell package case 1, and the liquid refrigerant of 1 bottom of cell package case is sealed by battery
The liquid outlet outflow of vanning 1, and be delivered in the liquid inlet of heat exchanger 8 after the decompression of first throttle valve 6, then through the second lattice
Grid 12 uniformly on spray to the internal heat wall surface of heat exchanger 8, then carry out heat exchange with external heat source, absorb external heat source
Heat and be evaporated to gaseous working medium, the gaseous working medium enters the gas of injector 14 after the outflow of the gas vent of heat exchanger 8
It is recycled next time in body interface.
The material of battery thermal protection body 3 be flame-retardant materials, the flame-retardant materials be modified hydrophilic fire-retardant polyester fibre,
Highly hydrophilic polyamide acid imide fiber, PBI fibre or diatomite；Cycle fluid phase transition temperature under operating pressure
It is -20 DEG C~80 DEG C；Cycle fluid be R1336mzz, R1233zd, Novec 649, HFE7000, R1224yd (Z),
RE245fa2, R365mfc, HFE-347mmy or HFE-347mcc；Or cycle fluid is R1336mzz, R1233zd, Novec
649, HFE7000, R1224yd (Z), RE245fa2, R365mfc, HFE-347mmy, HFE-347mcc, HFE7100 and
Two or more mixture mixed in any proportion in HFE7500.
Claims (7)
1. a kind of injection-absorption thermodynamic cycle battery thermal management system, which is characterized in that including heat exchanger (8), cell package case
(1), the first reversal valve (13), the second reversal valve (15), third reversal valve (16), the 4th reversal valve (17), the 5th reversal valve
(5), the 6th reversal valve (9), injector (14), first circulation pump (7), second circulation pump (11), first throttle valve (6) and second
Throttle valve (10)；
The liquid inlet of heat exchanger (8) is connected with the position the B connector of the first reversal valve (13), the position C of the first reversal valve (13)
Connector is connected with the outlet of the fluid-mixing of the H position connector of the 4th reversal valve (17) and injector (14), injector (14)
Gas access be connected with the position the B connector of the second reversal valve (15), the C position connector of the second reversal valve (15) and battery seal
The gas vent of vanning (1) is connected, and the H position connector of the second reversal valve (15) is connected with the gas vent of heat exchanger (8),
The B position connector of 4th reversal valve (17) is connected with the liquid inlet of cell package case (1), the position C of the 4th reversal valve (17)
Connector and the position the H connector of third reversal valve (16), the outlet of second throttle (10) and the outlet of second circulation pump (11)
It is connected, the liquid inlet of injector (14) is connected with the position the B connector of third reversal valve (16), third reversal valve (16)
C connectors are exported with the position the H connector of the first reversal valve (13), first throttle valve (6) and the outlet phase of first circulation pump (7)
Connection, the liquid outlet of cell package case (1) are connected with the position the B connector of the 5th reversal valve (5), the H of the 5th reversal valve (5)
Position connector is connected with the entrance of first throttle valve (6), C position connector and the first circulation pump (7) of the 5th reversal valve (5)
Entrance is connected, and the liquid outlet of heat exchanger (8) is connected with the position the B connector of the 6th reversal valve (9), the 6th reversal valve (9)
C position connector be connected with the entrance of second throttle (10), the H position connector of the 6th reversal valve (9) and second circulation pump
(11) entrance is connected.
2. injection according to claim 1-absorption thermodynamic cycle battery thermal management system, which is characterized in that cell package
It is provided with battery thermal protection body (3) in case (1), is provided with several cavitys in the battery thermal protection body (3), pacifies in each cavity
Equipped with battery (4), wherein battery thermal protection body (3) is porous media structure.
3. injection according to claim 2-absorption thermodynamic cycle battery thermal management system, which is characterized in that cell package
Gas vent and liquid inlet on case (1) are set to the top of cell package case (1), the liquid outlet of cell package case (1)
Positioned at the bottom of cell package case (1), set between the top of battery thermal protection body (3) and the inner wall at the top of cell package case (1)
It is equipped with the first grid (2) with holes.
4. injection according to claim 3-absorption thermodynamic cycle battery thermal management system, which is characterized in that heat exchanger (8)
Gas vent and liquid inlet be all set in the tops of heat exchanger (8), the liquid outlet of heat exchanger (8) is located at heat exchanger (8)
Bottom, and the inside at the top of heat exchanger (8) is provided with the second grid (12) with holes.
5. injection according to claim 1-absorption thermodynamic cycle battery thermal management system, which is characterized in that battery heat is anti-
The material of watch box (3) is flame-retardant materials, and the flame-retardant materials are modified hydrophilic fire-retardant polyester fibre, highly hydrophilic polyamide
Imide fiber, PBI fibre or diatomite.
6. injection according to claim 1-absorption thermodynamic cycle battery thermal management system, which is characterized in that heat exchanger (8)
Inner wall and outside wall surface on be equipped with enhanced heat exchange fin.
7. a kind of injection described in claim 4-absorption thermodynamic cycle battery thermal management system working method, which is characterized in that
The following steps are included:
When battery (4) needs cooling, then by the first reversal valve (13), the second reversal valve (15), third reversal valve (16), the 4th
C position connector in reversal valve (17), the 5th reversal valve (5) and the 6th reversal valve (9) is connected with B connectors, battery envelope
Liquid outlet and first circulation pump (7) of the internal circulating liquid working medium of vanning (1) through cell package case (1) are delivered to injector
(14) in, then the jet pipe ejection internal by injector (14), the jet stream injection of jet pipe high speed injection is from cell package case (1)
Gaseous recycle working medium, the liquid refrigerant of injection are sufficiently mixed in the diffuser pipe of injector (14) with by the gaseous working medium of injection,
Gas-liquid mixture fluid is formed, gas-liquid mixture fluid speed in the diffuser pipe in injector (14) reduces, and pressure increases, together
When mixed process in gaseous working medium absorbed by liquid refrigerant, gaseous working medium is converted into liquid and discharges heat, formed high temperature and pressure
Liquid, the high temperature high pressure liquid enter in heat exchanger (8) through the liquid inlet of heat exchanger (8), and through the second grid (12)
It sprays on the internal heat exchange wall surface of heat exchanger (8), condensing heat-exchange, release heat cooling, cooling then occurs with external cold source
Fluid afterwards is flowed out by the liquid outlet of heat exchanger (8), and is delivered to cell package case (1) after second throttle (10) decompression
In, then through the first grid (2), uniformly spray is arrived on battery thermal protection body (3), since battery thermal protection body (3) is porous media
Structure, the fluid after cooling pass through battery thermal protection body (3) diffusion transport to the surface of battery (4), absorb the heat of battery (4)
And evaporate and form gaseous working medium, realize the cooling of battery (4), the gaseous working medium passes through battery thermal protection body (3) diffusion outflow,
Then enter from the gas interface for entering injector (14) after the outflow of the gas vent of cell package case (1) and follow next time
Ring；
When battery (4) needs to heat, then by the first reversal valve (13), the second reversal valve (15), third reversal valve (16), the 4th
H position connector in reversal valve (17), the 5th reversal valve (5) and the 6th reversal valve (9) is connected with B connectors, heat exchanger
(8) the circulating liquid working medium in is flowed out through the liquid outlet of heat exchanger (8), and is delivered to injector through second circulation pump (11)
(14) in liquid inlet, circulating liquid working medium is sprayed by the jet pipe in injector (14), wherein the jet stream injection of high speed injection
From the gaseous recycle working medium of heat exchanger (8), the liquid refrigerant of injection and by the gaseous working medium of injection in injector (14)
Diffuser pipe in be sufficiently mixed, formed gas-liquid mixture fluid, the gas-liquid mixture fluid is in the diffuser pipe in injector (14)
Speed reduces, and pressure increases, while gaseous working medium is absorbed by liquid refrigerant in mixed process, and gaseous working medium is converted into liquid and releases
Thermal discharge forms high temperature high pressure liquid, and the high temperature high pressure liquid enters in cell package case (1), then equal through the first grid (2)
On even spray to battery thermal protection body (3), in cell package case (1), unabsorbed gaseous working medium is condensed into liquid and releases
Thermal discharge, the liquid refrigerant with higher temperature pass through battery thermal protection body (3) diffusion transport to battery (4) surface, and will be hot
Amount passes to battery (4), realizes heating and heat preservation to battery (4), and the liquid working substance of cooling passes through battery thermal protection body (3) and falls
Fall on the bottom of cell package case (1), the liquid refrigerant of cell package case (1) bottom by cell package case (1) liquid outlet
Outflow, and be delivered in the liquid inlet of heat exchanger (8) after first throttle valve (6) decompression, then uniform through the second grid (12)
On the internal heat wall surface for spraying heat exchanger (8), heat exchange then is carried out with external heat source, to absorb the heat of external heat source
And it is evaporated to gaseous working medium, the gaseous working medium enters the gas of injector (14) after the outflow of the gas vent of heat exchanger (8)
Enter in body interface and recycles next time.
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Effective date of registration: 20231213 Address after: Room 1043, 1st Floor, JuGou Hongde Building, No. 20, West China Science and Technology Innovation Port, Fengxi New City, Xixian New District, Xi'an City, Shaanxi Province, 710115 Patentee after: Shaanxi Boyun Jianri New Energy Technology Co.,Ltd. Address before: 710049 No. 28 West Xianning Road, Shaanxi, Xi'an Patentee before: XI'AN JIAOTONG University |