CN108963384A - battery thermal management system and method - Google Patents
battery thermal management system and method Download PDFInfo
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- CN108963384A CN108963384A CN201810933707.6A CN201810933707A CN108963384A CN 108963384 A CN108963384 A CN 108963384A CN 201810933707 A CN201810933707 A CN 201810933707A CN 108963384 A CN108963384 A CN 108963384A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 37
- 230000006835 compression Effects 0.000 claims abstract description 31
- 238000007906 compression Methods 0.000 claims abstract description 31
- 230000008878 coupling Effects 0.000 claims abstract description 30
- 238000010168 coupling process Methods 0.000 claims abstract description 30
- 238000005859 coupling reaction Methods 0.000 claims abstract description 30
- 238000005057 refrigeration Methods 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims description 6
- 239000003507 refrigerant Substances 0.000 claims description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 5
- 229910001416 lithium ion Inorganic materials 0.000 claims description 5
- 238000005485 electric heating Methods 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000004642 Polyimide Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims description 2
- 229910021389 graphene Inorganic materials 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 239000004519 grease Substances 0.000 claims description 2
- 238000007731 hot pressing Methods 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229920001721 polyimide Polymers 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 230000009467 reduction Effects 0.000 claims description 2
- 239000000741 silica gel Substances 0.000 claims description 2
- 229910002027 silica gel Inorganic materials 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 229920002379 silicone rubber Polymers 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 19
- 239000002826 coolant Substances 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 4
- 230000010261 cell growth Effects 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- PZZOEXPDTYIBPI-UHFFFAOYSA-N 2-[[2-(4-hydroxyphenyl)ethylamino]methyl]-3,4-dihydro-2H-naphthalen-1-one Chemical compound C1=CC(O)=CC=C1CCNCC1C(=O)C2=CC=CC=C2CC1 PZZOEXPDTYIBPI-UHFFFAOYSA-N 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6552—Closed pipes transferring heat by thermal conductivity or phase transition, e.g. heat pipes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
Abstract
A kind of battery thermal management system and method, the battery thermal management system include battery modules, heat pipe unit, heating unit and compression refrigeration unit；If wherein heat pipe unit includes dry heat pipe, the heat pipe has heat pipe hot end and heat pipe cold end；One surface thermal coupling of battery modules and heat pipe hot end；Another surface thermal coupling of heating unit and heat pipe hot end is heated up by heating unit to the battery modules；The cold pipe surface thermal coupling of evaporator of heat pipe cold end and compression refrigeration unit, makes the battery modules cool down by compression refrigeration unit.It is flowed in heat management system of the invention without anti-icing fluid, eliminates liquid cooling apparatus, fundamentally avoided coolant liquid leakage, and the samming effect having by heat pipe, avoid relative complex parallel series pipe system.
Description
Technical field
The present invention relates to battery thermal management technical fields, more particularly to a kind of battery thermal management system and method.
Background technique
Power battery using lithium ion battery as representative has been widely used for providing power for new-energy automobile.Industry at present
It is believed that the more excellent environment temperature of lithium ion battery work is 5~35 DEG C, the lithium ion to work in this temperature range is dynamic on boundary
Power battery is able to maintain very high efficiency for charge-discharge and realizes longer service life.
However the most area of south China, power battery are charged in summer using the big multiplying power of 1C or more, and in height
When warm weather down train is discharged, temperature is often between 35~55 DEG C.And in the most area of northern China, winter
Environment temperature is often below 5 DEG C.Therefore thermal management device of battery is needed to carry out temperature control to power battery.
Some heat management device of power battery products use anti-icing fluid circulating pipe system device (hereinafter referred to as more on the market
" liquid cooling apparatus ") it realizes to the heat management function of battery.There are following major drawbacks to battery thermal management for liquid cooling apparatus:
1, liquid cooling plate is embedded in battery case, and is typically arranged between battery bottom and box baseplate.As a result, in length
Time, and then coolant liquid may contact the shells of battery modules leads to it using the commissure of rear liquid cooling pipeline there are leakage hidden danger
Safety problem occurs for short circuit；
2, it when liquid cooling apparatus heats low temperature battery, needs that coolant temperature is first heated to certain temperature, could pass through cold
But liquid makes battery heat up.Since the specific heat capacity of anti-icing fluid is larger, this mode or power consumption to battery low-temperature heat
It is more, it is not energy-efficient；The temperature rise rate of battery is relatively low；
3, the pipeline of liquid cooling apparatus forms more complex series-parallel circuit in battery pack, these complicated series-parallel circuits
It is difficult to that battery is made to keep good uniform temperature.
Summary of the invention
In view of this, the main purpose of the present invention is to provide a kind of battery thermal management system and method, at least portion
Ground is divided to solve at least one of above-mentioned technical problem.
To achieve the goals above, as one aspect of the present invention, a kind of battery thermal management system, including electricity are proposed
Chi Mo group, heat pipe unit, heating unit and compression refrigeration unit；It is characterized by:
If heat pipe unit includes dry heat pipe, the heat pipe has heat pipe hot end and heat pipe cold end；
One surface thermal coupling of battery modules and heat pipe hot end；
Another surface thermal coupling of heating unit and heat pipe hot end is heated up by heating unit to the battery modules；
The cold pipe surface thermal coupling of evaporator of heat pipe cold end and compression refrigeration unit is made described by compression refrigeration unit
Battery modules cooling.
As another aspect of the present invention, it is also proposed that a kind of to carry out electricity using battery thermal management system as described above
The method of pond heat management, which comprises the following steps:
When the temperature for detecting battery modules is more than the first temperature, compression refrigeration unit is opened, makes the cold pipe drop of evaporator
Temperature；The cold pipe of evaporator and the thermal coupling of heat pipe cold end, therefore the temperature of heat pipe cold end reduces, and then makes the temperature following in heat pipe hot end
Response reduces, to realize the cooling with the battery modules of heat pipe hot end thermal coupling；
When the temperature of battery modules is lower than second temperature, generate heat with the heating unit of heat pipe hot end thermal coupling, heating heat
The side wall surface in pipe hot end；After heat pipe hot end is heated, the battery modules for being assemblied in another side wall surface in heat pipe hot end are transferred heat to, in turn
Realize the heating of each battery core in battery modules；Wherein second temperature is less than the first temperature.
Based on the above-mentioned technical proposal it is found that battery thermal management system and method for the invention exists such as compared with the existing technology
It is lower the utility model has the advantages that
(1) present invention proposes a kind of heat pipe and refrigeration system thermal coupling, realizes the system to power battery heat management；Entirely
It is flowed in heat management system without anti-icing fluid, but realizes and heating function cooling to power battery；Compared to use or have liquid
The battery thermal management system of device for cooling, pump apparatus and pipeline are obviously simplified, and complete vehicle weight is mitigated；Meanwhile removing
Liquid cooling apparatus fundamentally avoids coolant liquid once a leak occurs, battery modules are caused with the security risk of short-circuit possibility；This
Outside, due to using heating device to directly heat by heat pipe to battery modules, this portion for needing heated cooling fluid originally is saved
Divide electric energy；
(2) present invention carries out the mode of secondary cooling to battery modules using heat pipe and the cold pipe of evaporator, with directly use
The cold pipe of evaporator carries out the direct refrigerant cooling of active cycle to battery modules and compares, and heat pipe has good samming effect, and
Avoid relative complex parallel series pipe system.
Detailed description of the invention
Fig. 1 is the system framework figure of the battery thermal management system of the embodiment of the present invention 1；
Fig. 2 is the apparatus structure schematic diagram of the main component of battery thermal management system of the invention；
Fig. 3 is the system framework figure of the battery thermal management system of the embodiment of the present invention 2.
In upper figure, appended drawing reference meaning is as follows:
1- heat pipe hot end；2- heat pipe cold end；The cold pipe of 3- evaporator；The cold tube inlet of 4- evaporator；The cold pipe outlet of 5- evaporator；
6- battery modules；7- compressor；8- condenser；9- expansion valve；10- heating unit；13- cabin evaporator；The compression of 17- vehicle
Machine；18- vehicle condenser；191- cabin expansion valve；192- cell expansion valve；33- triple valve.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in further detail.
The invention discloses a kind of battery thermal management systems, to overcome the defect of above-mentioned liquid cooling apparatus.Specifically, of the invention
Battery thermal management system, including battery modules, heat pipe unit, heating unit and compression refrigeration unit；Wherein:
Battery modules are for example made of the common power-equipment battery core such as multiple lithium-ion electric cores or plumbic acid battery core.
The one surface thermal coupling in the heat pipe hot end of an end face and heat pipe unit for battery modules, particular preferably by thermally conductive
Boundary material thermal coupling.
If heat pipe unit includes dry heat pipe, it can be general heat pipe, gravity which, which has heat pipe hot end and heat pipe cold end,
The heat pipe of heat pipe, hot pressing conversion heat pipe or temperature-uniforming plate form.The global shape of heat pipe be, for example, I shape,Shape, U-shaped or Qian shape,
Advantageous cross sections are flat heat pipe.It can be single heat pipe, be also possible to more heat pipes and form the heat pipe unit side by side.
If the lower surface in the heat pipe hot end of dry heat pipe passes through heat-conducting interface material and heating unit thermal coupling.
Heating unit can be electric heating device or the heating device of other forms, and wherein electric heating device can be silicon
Rubber-heating piece, ceramic heating flake, polyimide heater film, graphene heating film, PTC heating sheet etc..
The surface of the cold pipe of one or more evaporators on one or more surfaces and compression refrigeration unit of heat pipe cold end is logical
Cross heat-conducting interface material thermal coupling.
Heat-conducting interface material can be heat conductive silica gel gasket, heat-conducting silicone grease or heat-conducting glue.
Compressing refrigeration unit includes the cold pipe of evaporator, compressor, condenser and expansion valve etc..
Wherein, the cold pipe of evaporator is porous aluminum flat tube configuration, or round tube/flat tube and metal plate assemble thermal coupling knot
Structure.There are the entrance and outlet of single or a plurality of U-shaped channel and the cold pipe of evaporator inside the cold pipe of evaporator.
Entrance between multiple cold pipes of evaporator and outlet are series-parallel respectively, with the components such as compressor, condenser, expansion valve
Constitute closed medium circulation pipeline, composition compression refrigeration unit.
Work refrigerant, such as R134A, R410A can be for example filled in compression refrigeration unit.
Above-mentioned compression refrigeration unit can be that battery thermal management system device is dedicated, can also be with conventional new-energy automobile
Cabin air-conditioning system shares.Apparatus structure and the working principle for compressing refrigeration unit are identical as conventional compression refrigerating system,
This is repeated no more.
The invention also discloses a kind of method for carrying out battery thermal management using battery thermal management system as described above, packets
Include following steps:
When the temperature for detecting battery modules is more than the first temperature (such as 35 DEG C), compression refrigeration unit is opened, makes to steam
Send out the cold pipe cooling of device；The cold pipe of evaporator and the thermal coupling of heat pipe cold end, therefore the temperature of heat pipe cold end reduces, and then makes heat pipe hot end
Temperature following respond and reduce, to realize the cooling with the battery modules of heat pipe hot end thermal coupling；
When the temperature of battery modules is lower than second temperature (such as 0 DEG C), sent out with the heating unit of heat pipe hot end thermal coupling
Heat heats the side wall surface in heat pipe hot end；After heat pipe hot end is heated, the battery for being assemblied in another side wall surface in heat pipe hot end is transferred heat to
Mould group, and then realize the heating of each battery core in battery modules.Wherein second temperature is less than the first temperature.
Above-mentioned first, second temperature can be accordingly arranged according to application and objective environment, for example, if being used for
Southern high-temperature wet environment, then can be lower by the first temperature setting, and in the north being air-dried, average daily temperature is low, then
It can be higher by the first temperature setting.The second temperature for controlling heating temperature is also similarly, if too low right in northern temperature
Battery influences greatly, then second temperature to be arranged lower, it is easier to trigger heating unit and heat up to battery, avoid at low temperature
The too fast loss of battery capacity.
Explanation is further elaborated to technical solution of the present invention with preferred embodiment with reference to the accompanying drawing.
Embodiment 1
Fig. 1 and Fig. 2 is respectively the system framework figure of the battery thermal management system of the embodiment of the present invention 1 and the dress of main component
Structural schematic diagram is set, wherein the compression refrigeration unit part in Fig. 1 is served only for cooling battery modules 6, does not undertake in crew module
Thermic load.Demand of this system according to battery modules 6 to cooling and heating, system operating mode are respectively as follows:
When the temperature of battery modules 6 is more than the first temperature, such as at 35 DEG C, system and device work opens refrigerating function: pressure
Contracting machine 7 starts, and opens refrigeration cycle, and refrigerant flows in compression refrigeration unit, and it is cold to enter evaporator by the cold tube inlet 4 of evaporator
Pipe 3 realizes the rapid, uniform decrease in temperature of the cold pipe 3 of each evaporator by cold 5 outflow of pipe outlet of evaporator.The cold pipe 3 of evaporator and heat pipe
2 thermal coupling of cold end, therefore the temperature of heat pipe cold end 2 reduces, and then the temperature following in heat pipe hot end 1 is made to respond reduction, thus real
Now with the cooling of the battery modules 6 of 1 thermal coupling of heat pipe hot end.
When the temperature of battery modules 6 is lower than second temperature, such as at 0 DEG C, the heating unit 10 with 1 thermal coupling of heat pipe hot end
The side wall surface in heat pipe hot end 1 is heated in fever；After heat pipe hot end 1 is heated, rapid, uniform transfer heat to is assemblied in heat pipe hot end 1
The battery modules 6 of another side wall surface, and then realize that each battery core in battery modules 6 quickly, uniformly heats up.To battery modules 6
When heating, refrigeration compressor is not turned on, and the refrigerant compressed in refrigeration unit does not flow.Through the above scheme, the present invention relative to
The prior art can not only overcome the drawbacks such as liquid cooling apparatus leak electric leakage, but also may be implemented to be evenly heated battery modules, be one
A cold and hot complete thermal solutions taken into account.
Embodiment 2
Fig. 3 is the system frame structure figure of the battery thermal management system of the embodiment of the present invention 2, wherein the area with embodiment 1
It is not, compression refrigeration unit part is applied not only to cooling battery modules 6, also undertakes the heat in crew module simultaneously by triple valve
Load.
As shown in figure 3, member cabin and battery modules 6 share a set of vehicle compressor 17 and vehicle condenser 18, vehicle is cold
There is triple valve in the outlet of condenser 18, so that refrigerant is flowed separately through cabin by cabin expansion valve 191 and cell expansion valve 192 and steams
Device 13 and the cold pipe 3 of evaporator are sent out, to realized according to actual needs to the temperature of (occupant environment) and battery modules 6 in cabin
Independent regulation.Through the above scheme, the present invention can not only overcome the drawbacks such as liquid cooling apparatus leak electric leakage compared with the existing technology, but also
It can use the compression cooling system of existing vehicle itself, while can also realize and battery modules are evenly heated and one
A cold and hot complete thermal solutions taken into account.
In conclusion the battery thermal management technology in compared with the existing technology, cooling segment mostly uses and circulating cooling
Relevant device, the cold front heavy rain that circulating cooling liquid is generated in its condenser by on-board air conditioner are typical cooling for liquid cooling
Path is compression refrigeration-evaporator-cold air-coolant liquid condenser-circulating cooling liquid-cold plate-battery modules；And it is of the invention
Cooling path is compression refrigeration-evaporator-heat pipe-battery modules, is realized without coolant liquid cooling, compared to the cooling of circulating cooling liquid
Mode, the present invention significantly simplify system structure, reduce the heat transfer loss of pilot process, and heat-transfer effect is rapider；In addition, utilizing heat
The superelevation thermal conductivity of pipe cools down rapidly battery modules, while using the even temperature effect of heat pipe, realizes each battery core in mould group
Good temperature uniformity avoids battery and directly contacts with evaporator, so as to cause temperature difference mistake between battery cores different in mould group
Big drawback.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
Describe in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in protection of the invention
Within the scope of.
Claims (10)
1. a kind of battery thermal management system, including battery modules, heat pipe unit, heating unit and compression refrigeration unit；Its feature
It is:
If heat pipe unit includes dry heat pipe, the heat pipe has heat pipe hot end and heat pipe cold end；
One surface thermal coupling of battery modules and heat pipe hot end；
Another surface thermal coupling of heating unit and heat pipe hot end is heated up by heating unit to the battery modules；
The cold pipe surface thermal coupling of evaporator of heat pipe cold end and compression refrigeration unit, makes the battery by compression refrigeration unit
The cooling of mould group.
2. battery thermal management system as described in claim 1, which is characterized in that the battery modules include several lithium ions
Battery core or plumbic acid battery core.
3. battery thermal management system as described in claim 1, which is characterized in that the heat pipe be general heat pipe, gravity assisted heat pipe,
The heat pipe of heat pipe or temperature-uniforming plate form is converted in hot pressing；
Preferably, the global shape of the heat pipe be I shape,Shape, U-shaped or Qian shape；
Preferably, the heat pipe is flat heat pipe；
Preferably, the heat pipe unit includes the more heat pipes being arranged side by side.
4. battery thermal management system as described in claim 1, which is characterized in that the heating unit is electric heating device；
Preferably, the electric heating device is silicon rubber heating sheet, ceramic heating flake, polyimide heater film, graphene hair
Hotting mask or PTC heating sheet.
5. battery thermal management system as described in claim 1, which is characterized in that the thermal coupling between multiple components is logical
Heat-conducting interface material is crossed to realize thermal coupling；
Preferably, the heat-conducting interface material is heat conductive silica gel gasket, heat-conducting silicone grease or heat-conducting glue.
6. battery thermal management system as described in claim 1, which is characterized in that the compression refrigeration unit includes that evaporator is cold
Pipe, compressor, condenser and expansion valve.
7. battery thermal management system as described in claim 1, which is characterized in that the cold pipe of evaporator is porous aluminium flat conduit knot
Structure, or thermal coupling structure is assembled for round tube/flat tube and metal plate；
Preferably, thering is the entrance in single or a plurality of U-shaped channel and the cold pipe of evaporator and outlet to connect inside the cold pipe of evaporator
It is logical.
8. battery thermal management system as described in claim 1, which is characterized in that be filled with work in the compression refrigeration unit
Refrigerant, preferably R134A or R410A.
9. battery thermal management system as described in claim 1, which is characterized in that the battery thermal management system is on-vehicle battery
Heat management system, the compression refrigeration unit are the compression refrigeration cooling system of automobile itself, or straight independently of vehicle-mounted compression
Cooling system and radiate dedicated compression refrigerating system as battery case.
10. a kind of method that battery thermal management is carried out using battery thermal management system as described in any one of claims 1 to 9,
Characterized by comprising the following steps:
When the temperature for detecting battery modules is more than 35 DEG C, compression refrigeration unit is opened, makes the cold pipe cooling of evaporator；Evaporator
Cold pipe and the thermal coupling of heat pipe cold end, therefore the temperature of heat pipe cold end reduces, and then the temperature following in heat pipe hot end is made to respond reduction,
To realize the cooling with the battery modules of heat pipe hot end thermal coupling；
When the temperature of battery modules is lower than 0 DEG C, generate heat with the heating unit of heat pipe hot end thermal coupling, the one of heating heat pipe hot end
Side wall surface；After heat pipe hot end is heated, the battery modules for being assemblied in another side wall surface in heat pipe hot end are transferred heat to, and then realize battery mould
The heating of each battery core in group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810933707.6A CN108963384A (en) | 2018-08-15 | 2018-08-15 | battery thermal management system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810933707.6A CN108963384A (en) | 2018-08-15 | 2018-08-15 | battery thermal management system and method |
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| CN108963384A true CN108963384A (en) | 2018-12-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109659633A (en) * | 2018-12-17 | 2019-04-19 | 青岛港国际股份有限公司 | Automatic dock AGV battery temperature maintenance device and method |
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