CN109860454A - A kind of synthesis battery thermal management method based on Electric radiant Heating Film and phase-change material - Google Patents
A kind of synthesis battery thermal management method based on Electric radiant Heating Film and phase-change material Download PDFInfo
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- CN109860454A CN109860454A CN201811538270.2A CN201811538270A CN109860454A CN 109860454 A CN109860454 A CN 109860454A CN 201811538270 A CN201811538270 A CN 201811538270A CN 109860454 A CN109860454 A CN 109860454A
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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
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Abstract
A kind of synthesis battery thermal management method based on Electric radiant Heating Film and phase-change material is to meet electric automobile power battery heating/cooling thermal management algorithm for a kind of of cylindrical battery design.Electric radiant Heating Film is fitted in the side of battery, and Electric radiant Heating Film intermittent is arranged in battery modules, fills phase-change material in battery gap；Phase-change material is contacted with battery not to be contacted with Electric radiant Heating Film；Outside has metal shell to be fixed to whole.This method at low ambient temperatures heats battery using Electric radiant Heating Film, and phase-change material can be used as energy storage material and absorb waste heat, at low ambient temperatures, keep the temperature to battery；In battery high-temperature, phase-change material absorbs heat using latent heat and radiates, while improving battery uniform temperature, maintains battery within the scope of suitable temperature, extends the service life of battery, improves the efficiency of battery.This method is a kind of thermal management scheme of synthesis energy saving.
Description
Technical field
The present invention relates to pure electric automobile (pure electric automobile, hybrid vehicle) power battery field of heat management.Specifically
What is be related to a kind of meets electric automobile power battery heating/cooling thermal management algorithm.
Background technique
The energy and environmental protection are whole world significant problems urgently to be resolved, as Chinese automobile is constantly increasing, huge petroleum
Demand will increase the pressure of Chinese Energy Safety.Electric automobile energy weighting prediction can alleviate China to Imported oil
Dependency degree, solve the problems, such as the current vehicles to consumption of petroleum and environmental disruption.Electric car increasingly becomes the following vapour
The developing direction of vehicle, with going deep into for electric car research, battery is increasingly becoming as a critical component of electric car and grinds
The hot spot studied carefully, the cost of battery, service life and safety are all inseparable with the heat management of battery.
The principal element for influencing battery has charge-discharge magnification, charge and discharge blanking voltage, temperature etc., these factors are mutually made
About, it influences each other.For temperature, the normal and safe operation of battery has high requirement to temperature, and temperature height can
The use of battery cell is influenced, charge and discharge are to lithium battery monomer internal structure and electrochemical reaction at different ambient temperatures
Influence is different.Normal working temperature, which is 0-40 DEG C, to be advisable, current lithium-ion battery monomer in low temperature (be less than -30 DEG C) and
High temperature all can not work normally in the environment of (being greater than 50 DEG C).
Research finds battery under 0 DEG C of environment above, is able to maintain 80% or more of room temperature capacity, and 0 DEG C or less capacity is fast
Speed decline, when temperature drops to -20 DEG C, less than 50%, battery performance sharply declines discharge capacity.At low ambient temperatures, electric
The partial solvent solidification in liquid is solved, the quantity of lithium ion mobility is caused to reduce, conductive capability decline.And battery is in charging process
In there is a large amount of lithium metal to deposit, concentration polarization increases, and this lithium metal dendrite acute angle is sharp, is easy to wear out diaphragm, leads to electricity
Occurs short circuit in pond.
When battery temperature is excessively high, to will lead to SEI film unstable, and temperature is too low, and to will lead to inside battery chemical reaction slack-off, leads
Tankage reduction is sent a telegraph, also can not work normally at this time so as to cause by the vehicle in energy source of battery, inside battery pack
It is possible to cause thermal runaway phenomenon when constant temperature is excessively high, in addition, the temperature-difference in battery pack is excessive to will lead to each electricity
Temperature uniformity between the group of pond and between each battery cell is poor, and poor temperature property will have a direct impact on it again and use function
Between it is uncoordinated, at this stage about battery pack heat dissipating method research comparative maturity, various radiating modes researchs are gradually opened up
It opens, in the case of normally travel, battery discharge multiplying power does not exceed 1C, and temperature can substantially be controlled in reasonable temperature range
Interior, safety has basic guarantee.With the popularization of electric car gradually, territory of use and range constantly expand, invention one
The battery thermal management integrated approach that kind low-temperature heat is radiated with high temperature is necessary.Therefore safe and efficient thermal management algorithm for
The reliable and secure application value of electric vehicle is great.
Summary of the invention
For the deficiency of current battery thermal management algorithm, a kind of synthesis based on Electric radiant Heating Film and phase-change material has been invented herein
Battery thermal management method.Summary of the invention is as follows:
A kind of synthesis battery thermal management method based on Electric radiant Heating Film and phase-change material is one for cylindrical battery design
Kind meets electric automobile power battery heating/cooling thermal management algorithm.The battery-arrangements mode is to be staggered；Electric heating
Film is fitted in the side of battery, and the Electric radiant Heating Film intermittent is arranged in battery modules；Battery gap filling between Electric radiant Heating Film
Phase-change material；The phase-change material is contacted with battery not to be contacted with Electric radiant Heating Film；Outside has metal shell to be fixed to whole.When
When battery is in low temperature environment, Electric radiant Heating Film is using battery as power supply within -10 DEG C, while battery discharge can carry out self-heating,
Battery is heated with Electric radiant Heating Film by external power supply more than -10 DEG C, the phase-change material for being filled in gap between battery can be with
Waste heat is absorbed as energy storage material, the heat of absorption is divided into two parts, and it is excessive that a part can be heated by electrothermal film battery
Waste heat, the heat that discharges when a part is battery discharge in driving process, at low ambient temperatures, be protected to battery
Temperature；In battery high-temperature, phase-change material can be absorbed heat using latent heat and radiate, while improve battery uniform temperature.
Further, Electric radiant Heating Film is fitted in the side of battery, can increase the heating surface of Electric radiant Heating Film in this way with the direct face of battery
Product shortens heating time.
Further, using the Electric radiant Heating Film of flexible bendable material, thus it is possible to vary shape is to adapt to adding for different structure position
Heat demand.
Further, Electric radiant Heating Film and battery are in that intermittent is arranged in module internal, and being wrapped in battery two sides also has heat preservation
Effect.
Further, the battery gap between Electric radiant Heating Film fills a certain amount of phase-change material.Produce the phase-change material and electricity of filling
The thermally conductive number in pond is close.Heat can be exported in battery high-temperature.
Further phase-change material can choose paraffin, and packing material can choose expanded graphite, the materials such as metallic particles.
Further, phase-change material is directly contacted with battery, but is not contacted with Electric radiant Heating Film, can be existed in this way to avoid phase-change material
Heat is absorbed when heating battery, slows down the battery rate of heat addition.
Further, various pieces between metal fixing shell by heat conductive insulating silica gel to be fixedly connected.It can be with
It prevents in battery drain short circuit and driving process, component generates the situation that vibration takes off pine.
The program is to meet electric automobile power battery heating/cooling heat management for a kind of of cylindrical battery design
Method.This method at low ambient temperatures heats battery using Electric radiant Heating Film, and phase-change material can be used as energy storage material absorption
Waste heat, a part can be the excessive waste heat of heated by electrothermal film battery, and a part is released when being battery discharge in driving process
The heat put, at low ambient temperatures, be kept the temperature to battery；In battery high-temperature, phase-change material can be inhaled using latent heat
It receives heat to radiate, maintains battery within the scope of suitable temperature, this method is directed to existing for current thermal management technology not
Power battery low-temperature heat and heat preservation are combined together with high temperature heat dissipation, have the advantages that the good energy conservation of uniform temperature, extend by foot
The service life of battery improves the efficiency of battery.This method is a kind of thermal management scheme of synthesis energy saving.
Detailed description of the invention
Fig. 1 is method isometric structure chart.
Fig. 2 is method overlooking structure figure.
Fig. 3 is battery arrangement structure schematic diagram.
Fig. 4 is battery and Electric radiant Heating Film schematic diagram.
Fig. 5 is filling phase-change material schematic diagram
Fig. 6 is filling phase-change material top view
Fig. 7 is Electric radiant Heating Film schematic diagram
Fig. 8 is that Electric radiant Heating Film shows top view
Fig. 9 is phase-change material schematic diagram
Wherein:
1. 2. Electric radiant Heating Film of battery, 3. phase-change material, 4. metal shell
Specific embodiment
The embodiment of the present invention as shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9.
A kind of synthesis battery thermal management method based on Electric radiant Heating Film and phase-change material is one for cylindrical battery design
Kind meets electric automobile power battery heating/cooling thermal management algorithm.This method structure as shown in Figure 1 includes 1 battery, 2 electricity
Hotting mask, 3 phase-change materials and 4 external fixed structures composition；The battery-arrangements mode is to be staggered, as shown in Figure 3；Electricity
Hotting mask is fitted in the side of battery, and the Electric radiant Heating Film intermittent is arranged in battery modules as shown in Figure 4；Using flexible variable type
Electric radiant Heating Film as illustrated in figs. 7 and 8.Battery gap filling phase-change material between film is as shown in figs. 5 and 6；The phase-change material
It contacts with battery and is not contacted with Electric radiant Heating Film；Phase-change material can choose paraffin, and packing material can choose expanded graphite, metal
The materials such as grain.Phase-change material such as Fig. 9 shows have metal shell to be fixed outside method to whole.As shown in Figure 1.
When battery is in low temperature environment, enables Electric radiant Heating Film and battery is heated, be filled in the phase in gap between battery
Change material can be used as the heat that energy storage material absorption part waste heat absorbs and be divided into two parts, and a part can be Electric radiant Heating Film
The heating excessive waste heat of battery, the heat that a part discharges when being battery discharge in driving process, thus at low ambient temperatures, it is right
Battery is kept the temperature；In battery high-temperature, phase-change material can be absorbed heat using latent heat and carry out auxiliary heat dissipation, while improve electricity
Pond uniform temperature.In this method, phase-change material selection is easy to fill, the lesser Heat Conduction Material of the coefficient of expansion.Various pieces with gold
Belong to and being fixedly connected between fixing shell by heat conductive insulating silica gel.It can prevent battery drain short circuit and driving process
In, component generates the situation that vibration takes off pine.This method adds power battery low temperature for deficiency existing for current thermal management technology
Heat and heat preservation are combined together with high temperature heat dissipation, are had the advantages that the good energy conservation of uniform temperature, are extended the service life of battery, improve electricity
The efficiency in pond.This method is a kind of thermal management scheme of synthesis energy saving.
Claims (9)
1. a kind of synthesis battery thermal management method based on Electric radiant Heating Film and phase-change material, which is characterized in that
Electric radiant Heating Film is fitted in the outside of battery, battery and the direct face contact of Electric radiant Heating Film；Battery gap between Electric radiant Heating Film fills phase
Become material；Outside has metal shell to be fixed to whole；Electric radiant Heating Film at low ambient temperatures heats battery；Phase-change material
Battery is kept the temperature when low temperature, in battery high-temperature, is radiated to battery.
2. the method as described in claim 1, which is characterized in that battery is in be staggered.
3. the method as described in claim 1, which is characterized in that be connected between Electric radiant Heating Film and battery with heat conductive insulating silica gel.
4. the method as described in claim 1, which is characterized in that Electric radiant Heating Film uses the Electric radiant Heating Film of flexible bendable material.
5. the method as described in claim 1, which is characterized in that environment temperature be more than or equal to -10 DEG C, Electric radiant Heating Film using battery as
Power supply, Electric radiant Heating Film uses external power supply when temperature is lower than -10 DEG C.
6. the method as described in claim 1, which is characterized in that Electric radiant Heating Film package battery two sides are arranged in module internal.
7. as described in claim 1, which is characterized in that fill phase-change material in battery gap；The phase-change material for producing filling is not low
In battery thermal coefficient, in battery high-temperature, heat is exported.
8. as described in claim 1, which is characterized in that phase-change material is contacted with battery, is not contacted with Electric radiant Heating Film.
9. as described in claim 1, which is characterized in that solid by heat conductive insulating silica gel between Electric radiant Heating Film, battery and metal shell
Fixed connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811538270.2A CN109860454A (en) | 2018-12-16 | 2018-12-16 | A kind of synthesis battery thermal management method based on Electric radiant Heating Film and phase-change material |
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| CN201811538270.2A CN109860454A (en) | 2018-12-16 | 2018-12-16 | A kind of synthesis battery thermal management method based on Electric radiant Heating Film and phase-change material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110380158A (en) * | 2019-08-23 | 2019-10-25 | 西安闻泰电子科技有限公司 | A kind of battery warm-up circuit and battery component |
| CN110808431A (en) * | 2019-09-29 | 2020-02-18 | 浙江合众新能源汽车有限公司 | Phase-change-material-based power battery thermal management method and system |
| CN112467251A (en) * | 2020-12-03 | 2021-03-09 | 湖南电将军新能源有限公司 | Constant-temperature high-power battery module |
| CN113571808A (en) * | 2020-04-29 | 2021-10-29 | 上海汽车集团股份有限公司 | Battery module |
| CN114824557A (en) * | 2022-04-22 | 2022-07-29 | 北京科技大学 | Battery package cooling system |
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| CN106532177A (en) * | 2016-10-25 | 2017-03-22 | 中国科学技术大学 | Assembly component for heat dissipation and thermal runaway propagation blocking |
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| CN108365141A (en) * | 2018-01-10 | 2018-08-03 | 江西江特电动车有限公司 | Battery module, battery temperature control system with heating function and temperature control method |
| CN207834511U (en) * | 2017-12-15 | 2018-09-07 | 华南理工大学 | Heat management device of power battery under a kind of big temperature difference environment |
| CN208173747U (en) * | 2018-04-13 | 2018-11-30 | 苏州宝时得电动工具有限公司 | A kind of battery pack |
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Cited By (6)
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| CN110380158A (en) * | 2019-08-23 | 2019-10-25 | 西安闻泰电子科技有限公司 | A kind of battery warm-up circuit and battery component |
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| CN110808431A (en) * | 2019-09-29 | 2020-02-18 | 浙江合众新能源汽车有限公司 | Phase-change-material-based power battery thermal management method and system |
| CN113571808A (en) * | 2020-04-29 | 2021-10-29 | 上海汽车集团股份有限公司 | Battery module |
| CN112467251A (en) * | 2020-12-03 | 2021-03-09 | 湖南电将军新能源有限公司 | Constant-temperature high-power battery module |
| CN114824557A (en) * | 2022-04-22 | 2022-07-29 | 北京科技大学 | Battery package cooling system |
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Application publication date: 20190607 |
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