CN111211378A - A kind of power battery and thermal management method thereof - Google Patents
A kind of power battery and thermal management method thereof Download PDFInfo
- Publication number
- CN111211378A CN111211378A CN202010064809.6A CN202010064809A CN111211378A CN 111211378 A CN111211378 A CN 111211378A CN 202010064809 A CN202010064809 A CN 202010064809A CN 111211378 A CN111211378 A CN 111211378A
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- CN
- China
- Prior art keywords
- battery
- heat
- battery box
- box
- copper strip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007726 management method Methods 0.000 title claims abstract description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 50
- 229910052802 copper Inorganic materials 0.000 claims abstract description 50
- 239000010949 copper Substances 0.000 claims abstract description 50
- 239000006260 foam Substances 0.000 claims abstract description 45
- 239000011148 porous material Substances 0.000 claims abstract description 7
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 20
- 239000003063 flame retardant Substances 0.000 claims description 20
- 229920002545 silicone oil Polymers 0.000 claims description 3
- 230000008676 import Effects 0.000 claims 1
- 239000000295 fuel oil Substances 0.000 abstract description 27
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 11
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
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
- H01M10/62—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
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/643—Cylindrical cells
-
- 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
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
- H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
-
- 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
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- 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)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a power battery and a heat management method thereof, and the power battery comprises a battery box and a plurality of battery packs arranged in the battery box, wherein the battery packs are formed by sequentially arranging a plurality of cylindrical batteries, a copper foam strip with a pore is inserted between the gaps of two adjacent battery packs, the copper foam strip is partially contacted with the surfaces of the batteries, heat conduction resistance fuel oil is filled in the battery box, and the battery box is provided with an inlet and an outlet; when the environmental temperature is lower, thermal conductive and thermal resistant fuel oil is introduced through an inlet of the battery box to exchange heat with the surface of the battery and the foam copper strip so as to preheat the battery pack, thereby ensuring that the battery pack is maintained in an ideal temperature range; when the battery is at high temperature, cold-state heat conduction resistance fuel oil is introduced through the inlet of the battery box, continuously flows in from the inlet of the battery box, contacts with the surface of the battery and the foam copper strip for heat exchange, flows out from the outlet of the battery box, takes away the heat of the battery, and reduces the temperature of the battery pack.
Description
Technical Field
The invention belongs to the technical field of power battery thermal management, and particularly relates to a power battery combining foamy copper and heat-conducting flame-retardant oil, and a heating/cooling thermal management method thereof.
Background
The lithium ion battery as a more ideal power source in the future has the advantages of high specific energy, high specific rate, long service life, quick charge, unobvious memory effect and the like, but the lithium ion battery has poor abuse resistance, the service life of the battery is quickly attenuated due to overhigh temperature, and meanwhile, the risk of thermal runaway and the like is brought, and the thermal-related problem of the battery is one of the key factors for determining the service performance, safety, service life and use cost of the battery.
The large-scale of the power battery pack relatively reduces the ratio of the surface area to the volume, and the dense arrangement of the single battery cells leads to the over-high energy density of the battery pack, the heat inside the battery pack cannot be easily dissipated, the heat cannot be transferred and evacuated in time, the heat is easily accumulated, the local over-temperature and the temperature difference of each part are too large, and even dangerous conditions such as thermal runaway are caused.
Therefore, the invention discloses a battery heat management method for quickly conducting heat and equalizing temperature and effectively inhibiting thermal runaway.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a quick temperature equalization, effective flame-retardant and explosion-proof power battery.
The technical scheme adopted by the invention for solving the technical problems is as follows: a power battery comprises a battery box and a plurality of battery packs arranged in the battery box, wherein the battery packs are formed by sequentially arranging a plurality of cylindrical batteries, a copper foam strip with a pore is inserted between every two adjacent battery pack gaps, the copper foam strip is partially contacted with the surface of the battery, heat conduction resistance fuel oil is filled in the battery box, the heat conduction resistance fuel oil is filled in the battery gaps and the pores of the copper foam strip, the heat conduction resistance fuel oil has heat conductivity and flame retardance, and the heat conductivity coefficient of the heat conduction resistance fuel oil is greater than that of air; the heat conductivity coefficient of the foam copper strip is larger than that of the heat-conducting resistance fuel oil, and the battery box is provided with an inlet and an outlet.
Further, the heat conduction resistance fuel oil is silicone oil.
According to the power battery, the thickness of the foam copper strip is equal to the width of a gap between battery packs, so that the foam copper strip is tightly attached to the surface of the battery to reduce thermal resistance, and the foam copper strip is effectively fixed.
The power battery is characterized in that the battery box is filled with heat-conducting flame-retardant oil, and the copper foam strips and the battery are immersed in the heat-conducting flame-retardant oil.
The invention also discloses a heat management method of the power battery, which comprises the following steps: when the environmental temperature is lower, thermal conductive and thermal resistant fuel oil is introduced through an inlet of the battery box to exchange heat with the surface of the battery and the foam copper strip so as to preheat the battery pack, thereby ensuring that the battery pack is maintained in an ideal temperature range; when the battery is at high temperature, cold-state heat conduction resistance fuel oil is introduced through the inlet of the battery box, continuously flows in from the inlet of the battery box, contacts with the surface of the battery and the foam copper strip for heat exchange, flows out from the outlet of the battery box, takes away the heat of the battery, and reduces the temperature of the battery pack.
The invention has the beneficial effects that: the battery box is provided with an inlet and an outlet for the inflow and outflow of heat-conducting and heat-resistant fuel oil, and the heat-conducting and heat-resistant fuel oil in the battery box flows and carries out heat convection with the foam copper and the surface of the battery; only the temperature of the heat-conducting flame-retardant oil at the inlet of the battery box needs to be controlled, when the environmental temperature is low, the heat-conducting resistance fuel oil in a hot state is introduced to exchange heat with the surface of the battery and the foam copper strip, so that the preheating of the battery pack is realized, and when the temperature of the battery pack is high, the heat-conducting resistance fuel oil in a cold state is introduced to exchange heat with the surface of the battery and the foam copper strip, so that the temperature of the battery pack is reduced; the foam copper strips have porosity, the heat-conducting flame-retardant oil can fill the foam copper structure, and the contact area of the foam copper and the heat-conducting resistance fuel oil is increased, namely the heat exchange area of the foam copper and the heat-conducting flame-retardant oil is increased; the battery gap and the foam copper gap are filled with heat conduction resistance fuel oil, so that the heat resistance can be reduced; therefore, the invention can solve the temperature management problem of the tight space battery pack and effectively reduce the risks of thermal runaway and fire of the battery pack.
Drawings
FIG. 1 is a schematic view of the present invention in a front view;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic diagram of the arrangement of the battery according to the present invention;
FIG. 4 is a schematic structural view of a copper foam strip according to the present invention;
fig. 5 is a schematic view illustrating the copper foam strips inserted in the battery pack according to the present invention.
The notation in the figure is: 1-battery box, 2-copper foam strip, 3-thermal conductive resistance fuel and 4-battery.
Detailed Description
The invention is further described below with reference to the accompanying drawings and the detailed description.
As shown in figures 1 and 2, the invention discloses a power battery combining a copper foam strip 2 and heat conduction resistance fuel oil 3, which consists of a battery box 1, the copper foam strip 2, the heat conduction resistance fuel oil 3 and a battery 4. A plurality of cylindrical batteries 4 are sequentially arranged to form a battery pack, which is arranged as shown in fig. 3. A copper foam strip 2 with porosity and high thermal conductivity is shown in figure 4. The copper foam strips 2 having the same thickness as the gap width of the cells 4 are inserted into the gap of the battery pack as shown in fig. 5. The battery box 1 with the inlet and the outlet is filled with heat conduction resistance fuel oil 3, the battery 4 groups and the foam copper strip 2 are completely immersed, and the battery gaps and the foam copper pores are filled.
The foam copper strip 2 has the pore characteristics, so that the heat conduction and resistance fuel oil 3 can circulate in the foam copper pores; the foam copper strip 2 is in contact with the surface part of the battery 4, so that the heat of the battery 4 can be more quickly transferred to the foam copper 2; the heat conduction resistance fuel oil 3 has heat conductivity and flame retardance at the same time, and the heat conductivity coefficient of the heat conduction resistance fuel oil is larger than that of air; the heat conductivity coefficient of the copper foam strips 2 is larger than that of the heat-conducting resistance fuel oil 3, and when the heat conductivity coefficient of the copper foam strips 2 is far higher than that of the heat-conducting resistance fuel oil 3, the heat conductivity of the heat-conducting resistance fuel oil 3 can be improved, and the quick temperature equalization of the battery pack is realized. As a specific example, the heat-conducting flame-retardant oil 3 is silicone oil.
The thickness of the foam copper bar 2 is equal to the width of a gap between battery packs, so that the foam copper bar 2 is tightly attached to the surface of the battery 4 to reduce thermal resistance, and the foam copper bar 2 is effectively fixed; the foam copper strips 2 and the battery 4 are immersed in the heat-conducting flame-retardant oil 3, and the battery box 1 is completely filled with the heat-conducting resistance-retardant oil 3, so that the heat storage capacity can be increased, and the flame-retardant and explosion-proof capabilities can be improved.
When the environmental temperature is lower, the thermal conductive resistance fuel oil 3 in a thermal state is introduced through the inlet of the battery box 1 to exchange heat with the surface of the battery 4 and the foam copper strip 2 so as to preheat the battery pack, thereby ensuring that the battery pack is maintained in an ideal temperature range.
When the battery 4 is at a high temperature, the cold-state heat-conducting flame-retardant oil 3 is introduced through the inlet of the battery box 1, the cold-state heat-conducting resistance fuel continuously flows in from the inlet of the battery box, and flows out from the outlet of the battery box 1 after contacting and exchanging heat with the surface of the battery 4 and the foam copper strip 2, so that the heat of the battery is taken away, and the temperature of the battery pack is reduced. The battery pack is immersed in the heat-conducting flame-retardant oil 3, so that thermal runaway is effectively prevented.
The above description is only a preferred embodiment of the present invention, and does not describe the limitation of the present invention, and the system and the method for detecting a high temperature superconducting magnet should be regarded as the protection scope of the present invention.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010064809.6A CN111211378A (en) | 2020-01-20 | 2020-01-20 | A kind of power battery and thermal management method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010064809.6A CN111211378A (en) | 2020-01-20 | 2020-01-20 | A kind of power battery and thermal management method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111211378A true CN111211378A (en) | 2020-05-29 |
Family
ID=70787400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010064809.6A Pending CN111211378A (en) | 2020-01-20 | 2020-01-20 | A kind of power battery and thermal management method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111211378A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ310052B6 (en) * | 2020-09-10 | 2024-06-19 | Qoolers S.R.O. | A liquid-filled heat exchanger for cylindrical battery cells |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544622A (en) * | 2011-12-31 | 2012-07-04 | 广东工业大学 | Power battery cooling system based on foam metal/composite phase change material |
| CN103474711A (en) * | 2012-06-08 | 2013-12-25 | 中国人民解放军63971部队 | Heat management system of power supply |
| CN205646054U (en) * | 2016-02-03 | 2016-10-12 | 上海工程技术大学 | Power battery heat radiation structure |
| CN206685510U (en) * | 2017-04-14 | 2017-11-28 | 华霆（合肥）动力技术有限公司 | Heat-transfer device and supply unit |
| KR101814774B1 (en) * | 2017-04-28 | 2018-01-03 | 이택근 | Portable power supply device |
| CN108075081A (en) * | 2017-12-29 | 2018-05-25 | 广州中国科学院工业技术研究院 | Battery pack, battery pack and the vehicle with the battery pack |
-
2020
- 2020-01-20 CN CN202010064809.6A patent/CN111211378A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544622A (en) * | 2011-12-31 | 2012-07-04 | 广东工业大学 | Power battery cooling system based on foam metal/composite phase change material |
| CN103474711A (en) * | 2012-06-08 | 2013-12-25 | 中国人民解放军63971部队 | Heat management system of power supply |
| CN205646054U (en) * | 2016-02-03 | 2016-10-12 | 上海工程技术大学 | Power battery heat radiation structure |
| CN206685510U (en) * | 2017-04-14 | 2017-11-28 | 华霆（合肥）动力技术有限公司 | Heat-transfer device and supply unit |
| KR101814774B1 (en) * | 2017-04-28 | 2018-01-03 | 이택근 | Portable power supply device |
| CN108075081A (en) * | 2017-12-29 | 2018-05-25 | 广州中国科学院工业技术研究院 | Battery pack, battery pack and the vehicle with the battery pack |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ310052B6 (en) * | 2020-09-10 | 2024-06-19 | Qoolers S.R.O. | A liquid-filled heat exchanger for cylindrical battery cells |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200529 |