CN109818107A - Composite battery heat management system and its application method - Google Patents
Composite battery heat management system and its application method Download PDFInfo
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- CN109818107A CN109818107A CN201910173205.2A CN201910173205A CN109818107A CN 109818107 A CN109818107 A CN 109818107A CN 201910173205 A CN201910173205 A CN 201910173205A CN 109818107 A CN109818107 A CN 109818107A
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- heat exchange
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- 239000002131 composite material Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 111
- 150000001875 compounds Chemical class 0.000 claims abstract description 35
- 239000012530 fluid Substances 0.000 claims description 60
- 238000009833 condensation Methods 0.000 claims description 31
- 230000005494 condensation Effects 0.000 claims description 31
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 9
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 6
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 6
- 230000008020 evaporation Effects 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 239000003570 air Substances 0.000 claims description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 239000004519 grease Substances 0.000 claims description 3
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 3
- 229910001416 lithium ion Inorganic materials 0.000 claims description 3
- 229910052987 metal hydride Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000011505 plaster Substances 0.000 claims description 3
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- 239000012266 salt solution Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 229920002545 silicone oil Polymers 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 5
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- 230000005611 electricity Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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Classifications
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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
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Abstract
The invention discloses a kind of composite battery heat management system and its application methods, wherein heat management system includes battery system, compound heat exchange structure, low range operating condition heat management circuit and high magnification operating condition heat management circuit；Several battery modules of battery system are arranged on compound heat exchange structure；When battery system is in low range operating condition, by low range operating condition heat management circuit into the first heat exchange structure of compound heat exchange structure circulation conveying cooling media, the battery modules in battery system are cooled down；When battery system is in high magnification operating condition, by high magnification operating condition heat management circuit into the second heat exchange structure of compound heat exchange structure circulation conveying cooling media, the battery modules in battery system are cooled down.The present invention can effectively solve the different thermal management requirements of battery system operating condition and differ greatly, and caused by heat management system redundancy, the problem that utilization rate is low and system cost is high, have the characteristics that structure is simple, at low cost and low in energy consumption.
Description
Technical field
The present invention relates to battery technology field more particularly to a kind of composite battery heat management system and its application methods.
Background technique
In new-energy automobile field, quick charge is to solve the problems, such as one of the important aspect of pure electric vehicle mileage anxiety, electricity
Demand of the development of electrical automobile to quick charge is increasingly urgent to.Quick charge can greatly shorten the charging time of electric car.
Such as in 15 minutes, the electricity of 80% battery capacity is filled with to electric car.But quick charge is to the heat pipe of battery system
Reason proposes very high requirement.
Quick charge is to the requirement of the heat management of battery system are as follows: under normal circumstances, to the fast charge within realizing 15 minutes,
The rate of charge of power battery requires to be greater than 4C, and correspondingly, battery can generate a large amount of heat in a short time, and this requires vehicles
Carrying electrokinetic cell system has faster more efficient cooling system, quickly takes heat out of battery pack rapidly, keeps battery temperature
It is not too high, uniformity of temperature profile.Traditional way is that the heat dissipation problem of fast charge process is transferred to a set of battery thermal management circuit
It solves, by increasing paving liquid cooling plate, heat pipe in heat management circuit, configures the pump and pipeline of big flow, increase coolant flow
Equal measures improve heat radiation power.However, the work multiplying power of battery system is generally in 0.3~0.5C in normal driving process
Interior, calorific value of battery during fast charge is much higher than calorific value of the battery in normal driving process, this will lead to vehicle-mounted
Efficiency, utilization rate of the heat management system in normal driving process are very low.In addition, increasing paving liquid cooling plate, heat pipe, big flow is configured
Pump and the measures such as pipeline can all increase the volume, weight and cost of battery pack, improve complete vehicle weight, improve vehicle energy consumption.
In conclusion lacking a kind of battery thermal management system at present can effectively solve battery system in high magnification operating condition and low
Thermal management requirements under multiplying power operating condition differ greatly, and caused by heat management system redundancy, utilization rate is low and system cost is high
Problem.
Summary of the invention
Existing technical deficiency that present invention is generally directed to battery systems in terms of heat management provides a kind of composite battery heat
Management system and its application method.
The present invention provides a kind of composite battery heat management systems, including battery system, compound heat exchange structure, low power
Rate operating condition heat management circuit and high magnification operating condition heat management circuit；
The battery system includes several battery modules, and the battery modules are arranged on compound heat exchange structure；
The compound heat exchange structure includes the first heat exchange structure and the second heat exchange structure；
The low range operating condition heat management circuit, is connected with first heat exchange structure, is in low range in battery system
When operating condition, by the low range operating condition heat management circuit into the first heat exchange structure circulation conveying cooling media to the battery
Battery modules in system are cooled down；
The high magnification operating condition heat management circuit, is connected with second heat exchange structure, is in high magnification in battery system
When operating condition, by the high magnification operating condition heat management circuit into the second heat exchange structure circulation conveying cooling media to the battery
Battery modules in system are cooled down.
As an embodiment, composite battery heat management system provided by the invention further includes thermally-conductive interface material
Material；
The heat-conducting interface material is set between the battery system and compound heat exchange structure, so that the battery system
System, compound heat exchange structure and heat-conducting interface material establish heat exchange relationship；
The heat-conducting interface material be heat-conducting glue, heat-conducting pad, heat-conducting silicone grease, thermal conductive silicon adhesive plaster, graphene phase transformation piece with
And one of graphite heat radiation fin.
As an embodiment, the battery modules lithium ion battery mould group, lead-acid battery mould group, nickel-metal hydride battery mould
One or more of group, super capacitor module and fuel cell mould group.
As an embodiment, the low range operating condition heat management circuit and high magnification operating condition heat management circuit are
One of liquid cooling loop, air-cooled circuit and direct-cooled circuit.
As an embodiment, the low range operating condition heat management circuit includes fan, the first evaporator, the first storage
Flow container, the first compressor, the first condenser and the first expansion valve；
First compressor is connect with first fluid reservoir and the first condenser respectively, by first fluid reservoir
In cooling media be delivered in the first condenser and carry out condensation cooling；
First condenser is connect by first expansion valve with the first evaporator, by the cooling matchmaker by condensation
It is situated between and the first evaporator is delivered to by the first expansion valve；
First evaporator is connect with first fluid reservoir, for being evaporated to the cooling media by condensation,
And remaining cooling media will be evaporated and be delivered to the first fluid reservoir；
The fan is set in front of first evaporator, and cooling media circulation conveying that evaporation obtains to first is changed
The battery modules are cooled down in heat structure.
As an embodiment, the high magnification operating condition heat management circuit include first circulation pump, the second evaporator,
Second fluid reservoir, the second compressor, the second condenser and the second expansion valve；
Second compressor is connect with second fluid reservoir and the second condenser respectively, by second fluid reservoir
In cooling media be delivered in the second condenser and carry out condensation cooling；
Second condenser is connect by second expansion valve with the second evaporator, by the cooling matchmaker by condensation
It is situated between and the second evaporator is delivered to by the second expansion valve；
Second evaporator is connect with second fluid reservoir, for being evaporated to the cooling media by condensation,
And remaining cooling media will be evaporated and be delivered to the second fluid reservoir；
First circulation pump, connect with second evaporator, will evaporate obtained cooling media circulation conveying to the
The battery modules are cooled down in two heat exchange structures.
As an embodiment, the low range operating condition heat management circuit include third fluid reservoir, third compressor,
Third condenser and third expansion valve；
The third compressor is connect with the third fluid reservoir and third condenser respectively, by the third fluid reservoir
In cooling media be delivered in third condenser and carry out condensation cooling；
The third condenser is connect with the third expansion valve, and the cooling media by condensation is expanded by third
Valve is delivered in the first heat exchange structure and cools down to the battery modules；
The third fluid reservoir is connect, for receiving the cooling for flowing through the first heat exchange structure with first heat exchange structure
Medium.
As an embodiment, the high magnification operating condition heat management circuit include second circulation pump, third evaporator,
4th fluid reservoir, the 4th compressor, the 4th condenser and the 4th expansion valve；
4th compressor is connect with the 4th fluid reservoir and the 4th condenser respectively, by the 4th fluid reservoir
In cooling media be delivered in the 4th condenser and carry out condensation cooling；
4th condenser is connect by the 4th expansion valve with third evaporator, by the cooling matchmaker by condensation
It is situated between and third evaporator is delivered to by the 4th expansion valve；
The third evaporator is connect with the 4th fluid reservoir, for being evaporated to the cooling media by condensation,
And remaining cooling media will be evaporated and be delivered to the 4th fluid reservoir；
Second circulation pump, connect with the third evaporator, will evaporate obtained cooling media circulation conveying to the
The battery modules are cooled down in two heat exchange structures.
As an embodiment, the cooling media is water, silicone oil, air, carbon dioxide, nitrogen, dry air, third
One of glycol, diethylene glycol (DEG), glycerol, glycol water, inorganic salt solution, alkane and halogenated alkane；
The physical form of the cooling media is one in gaseous state, liquid, gas-particle two-phase, gas-liquid two-phase and solid-liquid two-phase
Kind.
Correspondingly, the present invention also provides a kind of application method using composite battery heat management system, including following step
It is rapid:
During idle time, the low range operating condition heat management circuit and high magnification operating condition heat management circuit stop working；
When battery system is in low range operating condition, the high magnification operating condition heat management circuit stops working, by described
Low range operating condition heat management circuit into the first heat exchange structure circulation conveying cooling media to the battery mould in the battery system
Group is cooled down；
When battery system is in high magnification operating condition, the low range operating condition heat management circuit stops working, by described
High magnification operating condition heat management circuit into the second heat exchange structure circulation conveying cooling media to the battery mould in the battery system
Group is cooled down.
Compared with prior art, the technical program has the advantage that
Several battery modules of composite battery heat management system provided by the invention and its application method, battery system are set
It sets on compound heat exchange structure, using the first heat exchange structure and the second heat exchange structure of compound heat exchange structure by battery system
Low range operating condition thermal management requirements and high magnification operating condition thermal management requirements separate；Low range operating condition heat management circuit and the
One heat exchange structure is connected, and meets the low range operating condition thermal management requirements of battery system, and high magnification operating condition heat management circuit and the
Two heat exchange structures, which are connected, meets the high magnification operating condition thermal management requirements of battery system, to can effectively solve battery system high magnification
Thermal management requirements under operating condition and low range operating condition differ greatly, and caused by heat management system redundancy, utilization rate be low and system
Problem at high cost has the characteristics that structure is simple, at low cost and low in energy consumption.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the composite battery heat management system that the embodiment of the present invention one provides；
Fig. 2 is the structural schematic diagram of composite battery heat management system provided by Embodiment 2 of the present invention；
Fig. 3 is the structural schematic diagram of compound heat exchange structure provided by Embodiment 2 of the present invention；
Fig. 4 is the structural schematic diagram for the composite battery heat management system that the embodiment of the present invention three provides；
Fig. 5 is the structural schematic diagram for the compound heat exchange structure that the embodiment of the present invention three provides.
In figure: 100, battery system；101, battery modules；200, heat-conducting interface material；300, compound heat exchange structure；
301, the first microchannel；302, fin runner；311, the second microchannel；312, channel；400, low range operating condition heat management circuit；
402, fan；403, the first evaporator；404, the first fluid reservoir；405, the first compressor；406, the first condenser；407, first
Expansion valve；412, third fluid reservoir；413, third compressor；414, third condenser；415, third expansion valve；500, high magnification
Operating condition heat management circuit；502, first circulation pumps；503, the second evaporator；405, the second fluid reservoir；505, the second compressor；
506, the second condenser；507, the second expansion valve；502, second circulation pumps；503, third evaporator；504, the 4th fluid reservoir；
505, the 4th compressor；506, the 4th condenser；507, the 4th expansion valve.
Specific embodiment
Below in conjunction with attached drawing, the technical characteristic and advantage above-mentioned and other to the present invention are clearly and completely described,
Obviously, described embodiment is only section Example of the invention, rather than whole embodiments.
Referring to Fig. 1, the composite battery heat management system that the embodiment of the present invention one provides, including it is battery system 100, multiple
Mould assembly heat exchange structure 300, low range operating condition heat management circuit 400 and high magnification operating condition heat management circuit 500；
Battery system 100 includes several battery modules 101, and battery modules 101 are arranged on compound heat exchange structure 300；
Compound heat exchange structure 300 includes the first heat exchange structure and the second heat exchange structure；
Low range operating condition heat management circuit 400, is connected with the first heat exchange structure, is in low range work in battery system 100
When condition, by low range operating condition heat management circuit 400 into the first heat exchange structure circulation conveying cooling media to battery system 100
In battery modules 101 cooled down；
High magnification operating condition heat management circuit 500, is connected with the second heat exchange structure, is in high magnification work in battery system 100
When condition, by high magnification operating condition heat management circuit 500 into the second heat exchange structure circulation conveying cooling media to battery system 100
In battery modules 101 cooled down.
It should be noted that battery system 100 includes several battery modules 101,101 lithium ion battery mould group of battery modules
101, one of lead-acid battery mould group 101, nickel-metal hydride battery mould group 101, super capacitor module and fuel cell mould group 101
Or it is several.Battery modules 101 are evenly distributed on compound heat exchange structure 300, so that battery modules 101 and compound heat exchange knot
Structure 300 establishes heat exchange relationship, and the heat exchange that predominantly battery modules 101 and compound heat exchange structure 300 carry out heat transfer is closed
System.In order to improve heat exchange performance, heat-conducting interface material can be equipped between battery system 100 and compound heat exchange structure 300
200, so that battery system 100, compound heat exchange structure 300 and heat-conducting interface material 200 establish heat exchange relationship.Thermally conductive boundary
Plane materiel material 200 is mainly used for filling up the microvoid generated when battery system 100 and the contact of compound heat exchange structure 300 and surface is recessed
The hole of convex injustice reduces heat transfer resistance, improves the heat dissipation performance of battery system 100.Heat-conducting interface material 200 be heat-conducting glue,
One of heat-conducting pad, heat-conducting silicone grease, thermal conductive silicon adhesive plaster, graphene phase transformation piece and graphite heat radiation fin.
In this present embodiment, the first heat exchange structure of compound heat exchange structure 300 and the second heat exchange structure are mutually isolated, the
The cooling media of cooling media and the second heat exchange structure in one heat exchange structure does not circulate, and does not interfere.And the first heat exchange structure and
Cooling media in second heat exchange structure the two can be it is the same, all can be water, silicone oil, air, carbon dioxide, nitrogen,
One of dry air, propylene glycol, diethylene glycol (DEG), glycerol, glycol water, inorganic salt solution, alkane and halogenated alkane；
The physical form of cooling media is one of gaseous state, liquid, gas-particle two-phase, gas-liquid two-phase and solid-liquid two-phase.In order to more
Meet the thermal management requirements under high magnification operating condition and low range operating condition, the cooling media in low range operating condition heat management circuit 400
Can be different with the cooling media in high magnification operating condition heat management circuit 500, it is cold in high magnification operating condition heat management circuit 500
But the cooling media in medium specific heat ratio low range operating condition heat management circuit 400 is high.It is compound to change in other embodiments
The first heat exchange structure and the second heat exchange structure of heat structure 300 can be connection.First heat exchange structure and the second heat exchange structure
Specific structure can be determined by specific cooling media, the difference of cooling media, the first heat exchange structure and the second heat exchange structure
Structure be also different.
Low range operating condition heat management circuit 400 is connected with the first heat exchange structure, low range operating condition heat management circuit 400 it is cold
But medium flows into the first heat exchange structure and is returned in low range operating condition heat management circuit 400 after the completion of the heat exchange.In battery system
100 when being in low range operating condition, and only low range operating condition heat management circuit 400 works, and high magnification operating condition heat management circuit 500
It stops working, thus the demand that opposite heat tube is managed under low range operating condition.Same reason, high magnification operating condition heat management circuit 500 with
Second heat exchange structure is connected, and the cooling media in high magnification operating condition heat management circuit 500 flows into the second heat exchange structure and completes heat friendship
It is returned to after changing in high magnification operating condition heat management circuit 500.When battery system 100 is in high magnification operating condition, only high magnification work
Condition heat management circuit 500 works, and low range operating condition heat management circuit 400 stops working, thus opposite heat tube under high magnification operating condition
The demand of reason.Thermal management requirements to can effectively solve under 100 high magnification operating condition of battery system and low range operating condition differ greatly,
The problem that heat management system redundancy, utilization rate are low caused by and and system cost is high.
Composite battery heat management system provided by the invention, the setting of several battery modules 101 of battery system 100 is multiple
On mould assembly heat exchange structure 300, using the first heat exchange structure and the second heat exchange structure of compound heat exchange structure 300 by battery system
100 low range operating condition thermal management requirements and high magnification operating condition thermal management requirements are separated；Low range operating condition heat management circuit
400 are connected with the first heat exchange structure, meet the low range operating condition thermal management requirements of battery system 100, and high magnification operating condition heat pipe
Reason circuit 500 is connected with the second heat exchange structure meets the high magnification operating condition thermal management requirements of battery system 100, so as to effectively solve
Certainly the thermal management requirements under 100 high magnification operating condition of battery system and low range operating condition differ greatly, and caused by heat management system it is superfluous
Problem remaining, utilization rate is low and system cost is high has the characteristics that structure is simple, at low cost and low in energy consumption.
Further, low range operating condition heat management circuit 400 and high magnification operating condition heat management circuit 500 are that liquid cooling is returned
One of road, air-cooled circuit and direct-cooled circuit.Any one of liquid cooling loop, air-cooled circuit and direct-cooled circuit circuit
Low range operating condition heat management circuit 400 and high magnification operating condition heat management circuit 500 be all can serve as to use.
It illustrates below and low range operating condition heat management circuit 400 and high magnification operating condition heat management circuit 500 is carried out specifically
It is bright.
In the embodiment of the present invention two, as shown in Figures 2 and 3.Low range operating condition heat management circuit 400 includes fan
402, the first evaporator 403, the first fluid reservoir 404, the first compressor 405, the first condenser 406 and the first expansion valve 407；
First compressor 405 is connect with the first fluid reservoir 404 and the first condenser 406 respectively, by the cooling in the first fluid reservoir 404
Medium is delivered in the first condenser 406 and carries out condensation cooling；First condenser 406 is steamed by the first expansion valve 407 and first
It sends out device 403 to connect, the cooling media by condensation is delivered to the first evaporator 403 by the first expansion valve 407；First evaporation
Device 403 is connect with the first fluid reservoir 404, for being evaporated to the cooling media by condensation, and will evaporate remaining cooling
Medium is delivered to the first fluid reservoir 404；Fan 402 is set to 403 front of the first evaporator, and the cooling media that evaporation obtains is followed
Ring is delivered in the first heat exchange structure and cools down to battery modules 101.Cooling matchmaker in low range operating condition heat management circuit 400
Jie can be air.At this point, the first heat exchange structure of compound heat exchange structure 300 is the fin runner 302 for air circulation.
High magnification operating condition heat management circuit 500 include first circulation pump the 502, second evaporator 503, the second fluid reservoir 405,
Second compressor 505, the second condenser 506 and the second expansion valve 507；Second compressor 505, respectively with the second fluid reservoir
405 and second condenser 506 connect, the cooling media in the second fluid reservoir 405 is delivered in the second condenser 506 carry out it is cold
Solidifying cooling；Second condenser 506 is connect by the second expansion valve 507 with the second evaporator 503, by the cooling matchmaker by condensation
It is situated between and the second evaporator 503 is delivered to by the second expansion valve 507；Second evaporator 503 connect with the second fluid reservoir 405, is used for
Cooling media by condensation is evaporated, and remaining cooling media will be evaporated and be delivered to the second fluid reservoir 405；First follows
Ring pump 502, connect with the second evaporator 503, and the cooling media circulation conveying that evaporation is obtained is into the second heat exchange structure to electricity
Chi Mo group 101 is cooled down.Cooling media in high magnification operating condition heat management circuit 500 can be glycol water.At this point,
Second heat exchange structure of compound heat exchange structure 300 is the first microchannel 301 circulated for glycol water.
In the embodiment of the present invention three, as shown in Figure 4 and Figure 5.Compared with embodiment two, difference is low range operating condition
Heat management circuit 400 and high magnification operating condition heat management circuit 500 are different.
Low range operating condition heat management circuit 400 includes third fluid reservoir 412, third compressor 413, third condenser 414
And third expansion valve 415；Third compressor 413 is connect with third fluid reservoir 412 and third condenser 414 respectively, by third
Cooling media in fluid reservoir 412, which is delivered in third condenser 414, carries out condensation cooling；Third condenser 414, it is swollen with third
Swollen valve 415 connects, and the cooling media by condensation is delivered in the first heat exchange structure by third expansion valve 415 to battery mould
Group 101 is cooled down；Third fluid reservoir 412 is connect with the first heat exchange structure, for receiving the cooling for flowing through the first heat exchange structure
Medium.Cooling media in low range operating condition heat management circuit 400 can be refrigerant.At this point, compound heat exchange structure 300
First heat exchange structure is the channel 312 circulated for refrigerant.
High magnification operating condition heat management circuit 500 include second circulation pump 502, third evaporator 503, the 4th fluid reservoir 504,
4th compressor 505, the 4th condenser 506 and the 4th expansion valve 507；4th compressor 505, respectively with the 4th fluid reservoir
504 and the 4th condenser 506 connect, the cooling media in the 4th fluid reservoir 504 is delivered in the 4th condenser 506 carry out it is cold
Solidifying cooling；4th condenser 506 is connect by the 4th expansion valve 507 with third evaporator 503, by the cooling matchmaker by condensation
It is situated between and third evaporator 503 is delivered to by the 4th expansion valve 507；Third evaporator 503 connect with the 4th fluid reservoir 504, is used for
Cooling media by condensation is evaporated, and remaining cooling media will be evaporated and be delivered to the 4th fluid reservoir 504；Second follows
Ring pump 502, connect with third evaporator 503, and the cooling media circulation conveying that evaporation is obtained is into the second heat exchange structure to electricity
Chi Mo group 101 is cooled down.Cooling media in high magnification operating condition heat management circuit 500 can be glycol water.At this point,
Second heat exchange structure of compound heat exchange structure 300 is the second microchannel 311 circulated for glycol water.
In other embodiments, high magnification operating condition heat management circuit 500 be can be set in electrically-charging equipment, only in fast charge
When, it is connected on electric vehicle, cooling media is passed through battery system 100, to be quickly cooled down battery system 100；To further
The volume and weight of battery pack is reduced, to reduce complete vehicle weight, reduces vehicle energy consumption.
Based on the design of same invention, the embodiment of the present invention four provides a kind of user of composite battery heat management system
Method, the process that the implementation of the system can refer to above system is realized, it is no longer redundant later to repeat place.
Second embodiment of the present invention provides a kind of application methods of composite battery heat management system, comprising the following steps:
During idle time, low range operating condition heat management circuit and high magnification operating condition heat management circuit stop working；
When battery system is in low range operating condition, high magnification operating condition heat management circuit stops working, and passes through low range work
Condition heat management circuit circulation conveying cooling media into the first heat exchange structure cools down the battery modules in battery system；
When battery system is in high magnification operating condition, low range operating condition heat management circuit stops working, and passes through high magnification work
Condition heat management circuit circulation conveying cooling media into the second heat exchange structure cools down the battery modules in battery system.
The application method of composite battery heat management system provided by the invention, when battery system is in low range operating condition
When, battery system heat production power is small；High power operating condition heat management circuit does not work, low range operating condition heat management loop works, Xiang Fu
Mould assembly heat exchange structure exports low range operating condition cooling media, thus cooling battery system.When battery system is in high magnification work
When condition, battery system heat production power is big；Low range operating condition heat management circuit does not work, high magnification operating condition heat management loop works,
High magnification operating condition cooling media is inputted to compound heat exchange structure, to be quickly cooled down battery system.To can effectively solve
Thermal management requirements under battery system high magnification operating condition and low range operating condition differ greatly, and caused by heat management system redundancy, benefit
With the problem that rate is low and system cost is high.
Although the invention has been described by way of example and in terms of the preferred embodiments, but it is not for limiting the present invention, any this field
Technical staff without departing from the spirit and scope of the present invention, may be by the methods and technical content of the disclosure above to this hair
Bright technical solution makes possible variation and modification, therefore, anything that does not depart from the technical scheme of the invention, and according to the present invention
Technical spirit any simple modifications, equivalents, and modifications to the above embodiments, belong to technical solution of the present invention
Protection scope.
Claims (10)
1. a kind of composite battery heat management system, which is characterized in that including battery system, compound heat exchange structure, low range
Operating condition heat management circuit and high magnification operating condition heat management circuit；
The battery system includes several battery modules, and the battery modules are arranged on compound heat exchange structure；
The compound heat exchange structure includes the first heat exchange structure and the second heat exchange structure；
The low range operating condition heat management circuit, is connected with first heat exchange structure, is in low range operating condition in battery system
When, by the low range operating condition heat management circuit into the first heat exchange structure circulation conveying cooling media to the battery system
In battery modules cooled down；
The high magnification operating condition heat management circuit, is connected with second heat exchange structure, is in high magnification operating condition in battery system
When, by the high magnification operating condition heat management circuit into the second heat exchange structure circulation conveying cooling media to the battery system
In battery modules cooled down.
2. composite battery heat management system as described in claim 1, which is characterized in that further include heat-conducting interface material；
The heat-conducting interface material is set between the battery system and compound heat exchange structure, so that the battery system,
Compound heat exchange structure and heat-conducting interface material establish heat exchange relationship；
The heat-conducting interface material is heat-conducting glue, heat-conducting pad, heat-conducting silicone grease, thermal conductive silicon adhesive plaster, graphene phase transformation piece and stone
One of black cooling fin.
3. composite battery heat management system as described in claim 1, which is characterized in that the battery modules lithium ion battery
One or more of mould group, lead-acid battery mould group, nickel-metal hydride battery mould group, super capacitor module and fuel cell mould group.
4. composite battery heat management system as described in claim 1, which is characterized in that the low range operating condition heat management returns
Road and high magnification operating condition heat management circuit are one of liquid cooling loop, air-cooled circuit and direct-cooled circuit.
5. composite battery heat management system as claimed in claim 4, which is characterized in that the low range operating condition heat management returns
Road includes fan, the first evaporator, the first fluid reservoir, the first compressor, the first condenser and the first expansion valve；
First compressor is connect with first fluid reservoir and the first condenser respectively, will be in first fluid reservoir
Cooling media, which is delivered in the first condenser, carries out condensation cooling；
First condenser is connect by first expansion valve with the first evaporator, will be led to by the cooling media of condensation
It crosses the first expansion valve and is delivered to the first evaporator；
First evaporator is connect with first fluid reservoir, for being evaporated to the cooling media by condensation, and will
It evaporates remaining cooling media and is delivered to the first fluid reservoir；
The fan is set in front of first evaporator, and the cooling media circulation conveying that evaporation is obtained to the first heat exchange is tied
The battery modules are cooled down in structure.
6. composite battery heat management system as claimed in claim 4, which is characterized in that the high magnification operating condition heat management returns
Road includes first circulation pump, the second evaporator, the second fluid reservoir, the second compressor, the second condenser and the second expansion valve；
Second compressor is connect with second fluid reservoir and the second condenser respectively, will be in second fluid reservoir
Cooling media, which is delivered in the second condenser, carries out condensation cooling；
Second condenser is connect by second expansion valve with the second evaporator, will be led to by the cooling media of condensation
It crosses the second expansion valve and is delivered to the second evaporator；
Second evaporator is connect with second fluid reservoir, for being evaporated to the cooling media by condensation, and will
It evaporates remaining cooling media and is delivered to the second fluid reservoir；
First circulation pump, connect with second evaporator, will evaporate obtained cooling media circulation conveying and changes to second
The battery modules are cooled down in heat structure.
7. composite battery heat management system as claimed in claim 4, which is characterized in that the low range operating condition heat management returns
Road includes third fluid reservoir, third compressor, third condenser and third expansion valve；
The third compressor is connect with the third fluid reservoir and third condenser respectively, will be in the third fluid reservoir
Cooling media, which is delivered in third condenser, carries out condensation cooling；
The third condenser is connect with the third expansion valve, and the cooling media by condensation is defeated by third expansion valve
It send and the battery modules is cooled down into the first heat exchange structure；
The third fluid reservoir is connect, for receiving the cooling media for flowing through the first heat exchange structure with first heat exchange structure.
8. composite battery heat management system as claimed in claim 4, which is characterized in that the high magnification operating condition heat management returns
Road includes second circulation pump, third evaporator, the 4th fluid reservoir, the 4th compressor, the 4th condenser and the 4th expansion valve；
4th compressor is connect with the 4th fluid reservoir and the 4th condenser respectively, will be in the 4th fluid reservoir
Cooling media is delivered in the 4th condenser and carries out condensation cooling；
4th condenser is connect by the 4th expansion valve with third evaporator, will be led to by the cooling media of condensation
It crosses the 4th expansion valve and is delivered to third evaporator；
The third evaporator is connect with the 4th fluid reservoir, for being evaporated to the cooling media by condensation, and will
It evaporates remaining cooling media and is delivered to the 4th fluid reservoir；
Second circulation pump, connect with the third evaporator, will evaporate obtained cooling media circulation conveying and changes to second
The battery modules are cooled down in heat structure.
9. composite battery heat management system as described in claim 1, which is characterized in that the cooling media be water, silicone oil,
Air, carbon dioxide, nitrogen, dry air, propylene glycol, diethylene glycol (DEG), glycerol, glycol water, inorganic salt solution, alkane with
And one of halogenated alkane；
The physical form of the cooling media is one of gaseous state, liquid, gas-particle two-phase, gas-liquid two-phase and solid-liquid two-phase.
10. a kind of application method using composite battery heat management system as described in any one of claim 1 to 9, special
Sign is, comprising the following steps:
During idle time, the low range operating condition heat management circuit and high magnification operating condition heat management circuit stop working；
When battery system is in low range operating condition, the high magnification operating condition heat management circuit stops working, and passes through the low power
Rate operating condition heat management circuit into the first heat exchange structure circulation conveying cooling media to the battery modules in the battery system into
Row cooling；
When battery system is in high magnification operating condition, the low range operating condition heat management circuit stops working, and passes through the high power
Rate operating condition heat management circuit into the second heat exchange structure circulation conveying cooling media to the battery modules in the battery system into
Row cooling.
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| CN112550085A (en) * | 2020-12-17 | 2021-03-26 | 吉林大学 | Multi-energy-source fuel cell automobile thermal management system and control method thereof |
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