CN109614662A - A kind of method and system of the radiating mode of determining lithium battery group in hot emulation experiment - Google Patents
A kind of method and system of the radiating mode of determining lithium battery group in hot emulation experiment Download PDFInfo
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- CN109614662A CN109614662A CN201811385430.4A CN201811385430A CN109614662A CN 109614662 A CN109614662 A CN 109614662A CN 201811385430 A CN201811385430 A CN 201811385430A CN 109614662 A CN109614662 A CN 109614662A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/08—Thermal analysis or thermal optimisation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The present invention provides a kind of method and system of the radiating mode of determining lithium battery group in hot emulation experiment.Described method and system is before carrying out hot emulation experiment, determine lithium battery group charge-discharge electric power and the heat radiation power under the relationship of heating power and different radiating modes, and optimal radiating mode is determined according to the heating power of lithium battery group and the relationship of heat radiation power, so that it is determined that radiating mode of the lithium battery group in different charge-discharge electric powers.Described method and system reduces the number for carrying out hot emulation experiment, improves the efficiency of hot emulation experiment by the judgement of the progress radiating mode before carrying out hot emulation experiment.
Description
Technical field
The present invention relates to battery technology fields, and more particularly, to a kind of determining lithium battery group in hot emulation experiment
In radiating mode method and system.
Background technique
Computer craze emulation technology is divided hot situation in battery cell and the lithium ion battery pack system course of work
A kind of important analysis means of analysis, are often commonly used by people for the optimization design and evaluation of battery cell and lithium ion battery pack system.
It is well known, however, that battery computer craze emulation mode to the research of battery cell and lithium ion battery pack system be it is completely different and
It is independent mutually: the hot emulation mode of lithium ion battery pack system level, the battery cell that focuses mainly on how reasonably arranging,
How to optimize the design of cooling medium runner and how to adjust cooling system running parameter to control lithium ion battery pack system temperature
Degree range simultaneously improves the temperature uniformity between each monomer.Which kind of therefore, how to determine in hot emulation experiment using radiating mode energy
Preferably make the hot situation of the lithium ion battery pack system course of work is more excellent just to need key problems-solving as one.
Summary of the invention
The radiating mode of lithium ion battery pack system is carried out before hot emulation experiment in order to solve to lack in the prior art
The technical issues of assessment the present invention provides a kind of method of radiating mode of determining lithium battery group in hot emulation experiment and is
System, the method for radiating mode of the determining lithium battery group in hot emulation experiment include:
The rated power P of lithium battery group is determined according to the type information of battery cell in lithium battery group0；
The heating power P of lithium battery group described in real-time measurement under different operating conditionsf；
According to the heating power P of lithium battery group real-time measurementf, determine the charge-discharge electric power P under different operating conditionssWith fever function
Rate PfRelation curve, wherein it is described difference operating conditions under lithium battery group charge-discharge electric power PsLess than P0；
The heat radiation power P under N kind radiating mode is calculated according to lithium battery cell box space sizei, wherein 1≤i <
N, N are natural number；
According to the heat radiation power P of lithium battery group under the N kind radiating modei, by the radiating mode according to heat radiation power Pi
Sequence from small to large is arranged, and heat radiation power sequence { P is generatedj, wherein 1≤j < N, N are natural number；
As P in the heat radiation power sequencej+1≥PfAnd Pj<PfWhen, determine heat radiation power Pj+1Corresponding radiating mode is institute
It is P that lithium battery group, which is stated, in heating powerfWhen radiating mode, as P in the heat radiation power sequence1≥PfWhen, determine heat radiation power
P1It in heating power is P that corresponding radiating mode, which is the lithium battery group,fWhen radiating mode, wherein 1≤j < N, N are nature
Number；
According to the charge-discharge electric power PsWith heating power PfRelation curve and heating power PfCorresponding radiating mode
Determine lithium battery group charge-discharge electric power P in hot emulation experimentsWith the corresponding relationship of radiating mode.
Further, the different operating conditions of the method include in lithium battery group energy storage and lithium battery group power grid frequency modulation at least
It is a kind of.
Further, the heating power P of the lithium battery group described in real-time measurement under different operating conditionsfRefer to using insulation
The heating power P of accelerating calorimeter real-time measurement lithium battery groupf。
Further, described that the heat radiation power under N kind radiating mode is calculated according to lithium battery cell box space size
PiRefer in hydrodynamics software STAR-CCM+, is determined by input lithium battery cell box space dimensional values and dissipated in N kind
Heat radiation power P under hot modei。
Further, the radiating mode in the method includes that liquid cooling, air conditioner refrigerating, air-cooled, phase-change material be cooling and liquid
State metal is cooling.
According to another aspect of the present invention, the present invention provides a kind of heat dissipation side of determining lithium battery group in hot emulation experiment
The system of formula, the system comprises:
First power cell is used to determine the specified of lithium battery group according to the type information of battery cell in lithium battery group
Power P0；
Second power cell is used for the heating power P of the lithium battery group described in real-time measurement under different operating conditionsf；
Relation curve unit is used for the heating power P according to lithium battery group real-time measurementf, determine under different operating conditions
Charge-discharge electric power PsWith heating power PfRelation curve, wherein it is described difference operating conditions under lithium battery group charge-discharge electric power PsIt is small
In P0；
Third power cell is used to calculate dissipating under N kind radiating mode according to lithium battery cell box space size
Thermal power Pi, wherein 1≤i < N, N are natural number；
Power sequence unit is used for the heat radiation power P according to lithium battery group under the N kind radiating modei, dissipated described
Hot mode is according to heat radiation power PiSequence from small to large is arranged, and heat radiation power sequence { P is generatedj, wherein 1≤j < N, N
For natural number；
Radiating mode unit is used for as P in the heat radiation power sequencej+1≥PfAnd Pj<PfWhen, determine heat radiation power
Pj+1It in heating power is P that corresponding radiating mode, which is the lithium battery group,fWhen radiating mode, when the heat radiation power sequence
Middle P1≥PfWhen, determine heat radiation power P1It in heating power is P that corresponding radiating mode, which is the lithium battery group,fWhen heat dissipation side
Formula, wherein 1≤j < N, N are natural number；
Radiate determination unit, is used for according to the charge-discharge electric power PsWith heating power PfRelation curve and fever
Power PfCorresponding radiating mode determines lithium battery group charge-discharge electric power P in hot emulation experimentsIt is corresponding with radiating mode to close
System.
Further, the heating power P of second power cell lithium battery group described in real-time measurement under different operating conditionsf
In different operating conditions include at least one of lithium battery group energy storage and lithium battery group power grid frequency modulation.
Further, second power cell is insulation accelerating calorimeter.
Further, the third power cell is hydrodynamics software STAR-CCM+.
Further, the radiating mode that the radiating mode unit determines includes liquid cooling, air conditioner refrigerating, air-cooled, phase transformation material
Material is cooling and liquid metal is cooling.
The method and system of radiating mode of the determination lithium battery group that technical solution of the present invention provides in hot emulation experiment
Before carrying out hot emulation experiment, lithium battery group charge-discharge electric power and dissipating under the relationship of heating power and different radiating modes are determined
Thermal power, and optimal radiating mode is determined according to the heating power of lithium battery group and the relationship of heat radiation power, so that it is determined that lithium
Radiating mode of the battery pack in different charge-discharge electric powers.Described method and system is by carrying out hot emulation experiment advance
The judgement of row radiating mode reduces the number for carrying out hot emulation experiment, improves the efficiency of hot emulation experiment.
Detailed description of the invention
By reference to the following drawings, exemplary embodiments of the present invention can be more fully understood by:
Fig. 1 is the side of the radiating mode according to the determination lithium battery group of the preferred embodiment for the present invention in hot emulation experiment
The flow chart of method；
Fig. 2 is that radiating mode according to the determination lithium battery group of the preferred embodiment for the present invention in hot emulation experiment is
The structural schematic diagram of system.
Specific embodiment
Exemplary embodiments of the present invention are introduced referring now to the drawings, however, the present invention can use many different shapes
Formula is implemented, and is not limited to the embodiment described herein, and to provide these embodiments be at large and fully disclose
The present invention, and the scope of the present invention is sufficiently conveyed to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements use identical attached
Icon note.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has person of ordinary skill in the field
It is common to understand meaning.Further it will be understood that with the term that usually used dictionary limits, should be understood as and its
The context of related fields has consistent meaning, and is not construed as Utopian or too formal meaning.
Fig. 1 is the side of the radiating mode according to the determination lithium battery group of the preferred embodiment for the present invention in hot emulation experiment
The flow chart of method.As shown in Figure 1, radiating mode of the determination lithium battery group in hot emulation experiment described in this preferred embodiment
Method since step 101.
In step 101, the rated power P of lithium battery group is determined according to the type information of battery cell in lithium battery group0.?
In practice, the type information of the lithium battery further includes the size, shape, production of lithium battery other than the rated power of mark
The information such as quotient.In general, big battery fever is big, and heat dissipation area is small, and baby battery fever is small, and heat dissipation area is big.
In step 102, the heating power P of lithium battery group described in real-time measurement under different operating conditionsf。
Preferably, the different operating conditions of the method include at least one in lithium battery group energy storage and lithium battery group power grid frequency modulation
Kind.Under the operating condition of energy storage, battery carries out low current charge, generates heat small, and under the operating condition of power grid frequency modulation, battery carries out extensive
Electric discharge, calorific value are big.
Preferably, the heating power P of the lithium battery group described in real-time measurement under different operating conditionsfRefer to and is added using insulation
The heating power P of fast calorimeter real-time measurement lithium battery groupf。
In step 103, according to the heating power P of lithium battery group real-time measurementf, determine the charge-discharge electric power under different operating conditions
PsWith heating power PfRelation curve, wherein it is described difference operating conditions under lithium battery group charge-discharge electric power PsLess than P0。
In step 104, the heat radiation power P under N kind radiating mode is calculated according to lithium battery cell box space sizei,
Wherein, 1≤i < N, N are natural number.
Preferably, described that the heat radiation power P under N kind radiating mode is calculated according to lithium battery cell box space sizei
Refer in hydrodynamics software STAR-CCM+, is determined by input lithium battery cell box space dimensional values and radiated in N kind
Heat radiation power P under modei.In the preferred embodiment, the battery case bulk, which refers to, accommodates the lithium battery group
Container.
Preferably, the radiating mode in the method includes that liquid cooling, air conditioner refrigerating, air-cooled, phase-change material be cooling and liquid
Metal is cooling.
In step 105, according to the heat radiation power P of lithium battery group under the N kind radiating modei, the radiating mode is pressed
According to heat radiation power PiSequence from small to large is arranged, and heat radiation power sequence { P is generatedj, wherein 1≤j < N, N are natural number.
In step 106, as P in the heat radiation power sequencej+1≥PfAnd Pj<PfWhen, determine heat radiation power Pj+1It is corresponding to dissipate
It in heating power is P that hot mode, which is the lithium battery group,fWhen radiating mode, as P in the heat radiation power sequence1≥PfWhen, really
Determine heat radiation power P1It in heating power is P that corresponding radiating mode, which is the lithium battery group,fWhen radiating mode, wherein 1≤j <
N, N are natural number.
In step 107, according to the charge-discharge electric power PsWith heating power PfRelation curve and heating power PfIt is corresponding
Radiating mode determine lithium battery group charge-discharge electric power P in hot emulation experimentsWith the corresponding relationship of radiating mode.
In the preferred embodiment, following result can be obtained by carrying out test using 18650 column lithium ion batteries:
18650 column lithium ion batteries 3 and 16 string battery pack transfers electricity work in 0.5C multiplying power, and total heating power is
W1, the total heat dissipation area of battery pack are S1, and environment temperature is 25 DEG C, battery spacing L1, are used certainly by the assessment system battery pack
Right convection current can ensure the battery surface temperature difference less than 5 DEG C.
18650 column lithium ion batteries 3 and 16 string battery pack transfers electricity work in 2C multiplying power, and total heating power is W2,
The total heat dissipation area of battery pack is S1, and environment temperature is 25 DEG C, battery spacing L1, by the assessment system battery pack using pressure wind
It is cold that the battery surface temperature difference can be ensured less than 5 DEG C.
18650 column lithium ion batteries 3 and 16 string battery pack transfers electricity work in 5C multiplying power, and total heating power is W3,
The total heat dissipation area of battery pack is S1, and environment temperature is 25 DEG C, battery spacing L1, uses liquid cooling side by the assessment system battery pack
Formula can ensure the battery surface temperature difference less than 5 DEG C.
Fig. 2 is that radiating mode according to the determination lithium battery group of the preferred embodiment for the present invention in hot emulation experiment is
The structural schematic diagram of system.As shown in Fig. 2, heat dissipation of the determination lithium battery group in hot emulation experiment described in this preferred embodiment
The system 200 of mode includes:
First power cell 201 is used to determine lithium battery group according to the type information of battery cell in lithium battery group
Rated power P0。
Second power cell 202 is used for the heating power P of the lithium battery group described in real-time measurement under different operating conditionsf。
Relation curve unit 203 is used for the heating power P according to lithium battery group real-time measurementf, determine under different operating conditions
Charge-discharge electric power PsWith heating power PfRelation curve, wherein it is described difference operating conditions under lithium battery group charge-discharge electric power Ps
Less than P0。
Third power cell 204 is used to be calculated under N kind radiating mode according to lithium battery cell box space size
Heat radiation power Pi, wherein 1≤i < N, N are natural number.
Power sequence unit 205 is used for the heat radiation power P according to lithium battery group under the N kind radiating modei, by institute
Radiating mode is stated according to heat radiation power PiSequence from small to large is arranged, and heat radiation power sequence { P is generatedj, wherein 1≤j <
N, N are natural number.
Radiating mode unit 206 is used for as P in the heat radiation power sequencej+1≥PfAnd Pj<PfWhen, determine heat dissipation function
Rate Pj+1It in heating power is P that corresponding radiating mode, which is the lithium battery group,fWhen radiating mode, when the heat radiation power sequence
P in column1≥PfWhen, determine heat radiation power P1It in heating power is P that corresponding radiating mode, which is the lithium battery group,fWhen heat dissipation
Mode, wherein 1≤j < N, N are natural number.
Radiate determination unit 207, is used for according to the charge-discharge electric power PsWith heating power PfRelation curve and hair
Thermal power PfCorresponding radiating mode determines lithium battery group charge-discharge electric power P in hot emulation experimentsIt is corresponding with radiating mode to close
System.
Preferably, the heating power P of second power cell lithium battery group described in real-time measurement under different operating conditionsfIn
Different operating conditions include at least one of lithium battery group energy storage and lithium battery group power grid frequency modulation.
Preferably, second power cell 202 is insulation accelerating calorimeter.
Preferably, the third power cell 204 is hydrodynamics software STAR-CCM+.
Preferably, the radiating mode that the radiating mode unit 206 determines includes liquid cooling, air conditioner refrigerating, air-cooled, phase transformation material
Material is cooling and liquid metal is cooling.
The present invention is described by reference to a small amount of embodiment.However, it is known in those skilled in the art, as
Defined by subsidiary Patent right requirement, in addition to the present invention other embodiments disclosed above equally fall in it is of the invention
In range.
Normally, all terms used in the claims are all solved according to them in the common meaning of technical field
It releases, unless in addition clearly being defined wherein.All references " one/described/be somebody's turn to do [device, component etc.] " are all opened ground
At least one example being construed in described device, component etc., unless otherwise expressly specified.Any method disclosed herein
Step need not all be run with disclosed accurate sequence, unless explicitly stated otherwise.
Claims (10)
1. a kind of method of radiating mode of determining lithium battery group in hot emulation experiment, which is characterized in that the described method includes:
The rated power P of lithium battery group is determined according to the type information of battery cell in lithium battery group0；
The heating power P of lithium battery group described in real-time measurement under different operating conditionsf；
According to the heating power P of lithium battery group real-time measurementf, determine the charge-discharge electric power P under different operating conditionssWith heating power Pf
Relation curve, wherein it is described difference operating conditions under lithium battery group charge-discharge electric power PsLess than P0；
The heat radiation power P under N kind radiating mode is calculated according to lithium battery cell box space sizei, wherein 1≤i < N, N are
Natural number；
According to the heat radiation power P of lithium battery group under the N kind radiating modei, by the radiating mode according to heat radiation power PiFrom small
It is arranged to big sequence, generates heat radiation power sequence { Pj, wherein 1≤j < N, N are natural number；
As P in the heat radiation power sequencej+1≥PfAnd Pj<PfWhen, determine heat radiation power Pj+1Corresponding radiating mode is the lithium
Battery pack is P in heating powerfWhen radiating mode, as P in the heat radiation power sequence1≥PfWhen, determine heat radiation power P1It is right
It in heating power is P that the radiating mode answered, which is the lithium battery group,fWhen radiating mode, wherein 1≤j < N, N are natural number；
According to the charge-discharge electric power PsWith heating power PfRelation curve and heating power PfCorresponding radiating mode determines
Lithium battery group charge-discharge electric power P in hot emulation experimentsWith the corresponding relationship of radiating mode.
2. the method according to claim 1, wherein the different operating conditions of the method include lithium battery group energy storage and
At least one of lithium battery group power grid frequency modulation.
3. the method according to claim 1, wherein the lithium battery group described in real-time measurement under different operating conditions
Heating power PfRefer to the heating power P using insulation accelerating calorimeter real-time measurement lithium battery groupf。
4. the method according to claim 1, wherein described calculate according to lithium battery cell box space size
Heat radiation power P under N kind radiating modeiRefer in hydrodynamics software STAR-CCM+, by inputting lithium battery cell case
Bulk numerical value determines the heat radiation power P under N kind radiating modei。
5. the method according to claim 1, wherein the radiating mode in the method includes liquid cooling, air-conditioning system
Cold, air-cooled, phase-change material is cooling and liquid metal is cooling.
6. a kind of system of radiating mode of determining lithium battery group in hot emulation experiment, which is characterized in that the system comprises:
First power cell is used to determine the rated power of lithium battery group according to the type information of battery cell in lithium battery group
P0；
Second power cell is used for the heating power P of the lithium battery group described in real-time measurement under different operating conditionsf；
Relation curve unit is used for the heating power P according to lithium battery group real-time measurementf, determine the charge and discharge under different operating conditions
Power PsWith heating power PfRelation curve, wherein it is described difference operating conditions under lithium battery group charge-discharge electric power PsLess than P0；
Third power cell is used to calculate the heat dissipation function under N kind radiating mode according to lithium battery cell box space size
Rate Pi, wherein 1≤i < N, N are natural number；
Power sequence unit is used for the heat radiation power P according to lithium battery group under the N kind radiating modei, by the heat dissipation side
Formula is according to heat radiation power PiSequence from small to large is arranged, and heat radiation power sequence { P is generatedj, wherein 1≤j < N, N are certainly
So number；
Radiating mode unit is used for as P in the heat radiation power sequencej+1≥PfAnd Pj<PfWhen, determine heat radiation power Pj+1It is right
It in heating power is P that the radiating mode answered, which is the lithium battery group,fWhen radiating mode, as P in the heat radiation power sequence1≥
PfWhen, determine heat radiation power P1It in heating power is P that corresponding radiating mode, which is the lithium battery group,fWhen radiating mode,
In, 1≤j < N, N are natural number；
Radiate determination unit, is used for according to the charge-discharge electric power PsWith heating power PfRelation curve and heating power
PfCorresponding radiating mode determines lithium battery group charge-discharge electric power P in hot emulation experimentsWith the corresponding relationship of radiating mode.
7. system according to claim 6, which is characterized in that second power cell real-time measurement under different operating conditions
The heating power P of the lithium battery groupfIn different operating conditions include in lithium battery group energy storage and lithium battery group power grid frequency modulation extremely
Few one kind.
8. system according to claim 6, which is characterized in that second power cell is insulation accelerating calorimeter.
9. system according to claim 6, which is characterized in that the third power cell is hydrodynamics software STAR-
CCM+。
10. system according to claim 6, which is characterized in that the radiating mode that the radiating mode unit determines includes
Liquid cooling, air conditioner refrigerating, air-cooled, phase-change material is cooling and liquid metal is cooling.
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| CN109614662B (en) | 2023-06-09 |
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