CN109346795B - Heat dissipation system of battery module - Google Patents
Heat dissipation system of battery module Download PDFInfo
- Publication number
- CN109346795B CN109346795B CN201811003852.0A CN201811003852A CN109346795B CN 109346795 B CN109346795 B CN 109346795B CN 201811003852 A CN201811003852 A CN 201811003852A CN 109346795 B CN109346795 B CN 109346795B
- Authority
- CN
- China
- Prior art keywords
- heat
- pipe
- heat dissipation
- heat conduction
- battery
- 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.)
- Active
Links
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 81
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 51
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 51
- 229910001338 liquidmetal Inorganic materials 0.000 claims abstract description 50
- 239000002131 composite material Substances 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000000498 cooling water Substances 0.000 claims abstract description 13
- 241000270295 Serpentes Species 0.000 claims abstract description 3
- 239000012782 phase change material Substances 0.000 claims description 13
- 229910000838 Al alloy Inorganic materials 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
- 229910021383 artificial graphite Inorganic materials 0.000 claims description 6
- 239000004917 carbon fiber Substances 0.000 claims description 6
- GHVNFZFCNZKVNT-UHFFFAOYSA-N decanoic acid Chemical compound CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 claims description 6
- 229910021389 graphene Inorganic materials 0.000 claims description 6
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 229910021382 natural graphite Inorganic materials 0.000 claims description 6
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 claims description 4
- BDKLKNJTMLIAFE-UHFFFAOYSA-N 2-(3-fluorophenyl)-1,3-oxazole-4-carbaldehyde Chemical compound FC1=CC=CC(C=2OC=C(C=O)N=2)=C1 BDKLKNJTMLIAFE-UHFFFAOYSA-N 0.000 claims description 3
- 229910001152 Bi alloy Inorganic materials 0.000 claims description 3
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 3
- TUNFSRHWOTWDNC-UHFFFAOYSA-N Myristic acid Natural products CCCCCCCCCCCCCC(O)=O TUNFSRHWOTWDNC-UHFFFAOYSA-N 0.000 claims description 3
- 229910000574 NaK Inorganic materials 0.000 claims description 3
- 235000021314 Palmitic acid Nutrition 0.000 claims description 3
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 229910001128 Sn alloy Inorganic materials 0.000 claims description 3
- 235000021355 Stearic acid Nutrition 0.000 claims description 3
- PSMFTUMUGZHOOU-UHFFFAOYSA-N [In].[Sn].[Bi] Chemical compound [In].[Sn].[Bi] PSMFTUMUGZHOOU-UHFFFAOYSA-N 0.000 claims description 3
- QHFQAJHNDKBRBO-UHFFFAOYSA-L calcium chloride hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].[Cl-].[Ca+2] QHFQAJHNDKBRBO-UHFFFAOYSA-L 0.000 claims description 3
- JWEBAGKDUWFYTO-UHFFFAOYSA-L disodium;hydrogen phosphate;decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].OP([O-])([O-])=O JWEBAGKDUWFYTO-UHFFFAOYSA-L 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 3
- FWLGASJILZBATH-UHFFFAOYSA-N gallium magnesium Chemical compound [Mg].[Ga] FWLGASJILZBATH-UHFFFAOYSA-N 0.000 claims description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 3
- 229910052753 mercury Inorganic materials 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 3
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 235000017281 sodium acetate Nutrition 0.000 claims description 3
- 229940087562 sodium acetate trihydrate Drugs 0.000 claims description 3
- RSIJVJUOQBWMIM-UHFFFAOYSA-L sodium sulfate decahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.[Na+].[Na+].[O-]S([O-])(=O)=O RSIJVJUOQBWMIM-UHFFFAOYSA-L 0.000 claims description 3
- -1 2-dimethylolpropanol Chemical compound 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 10
- 238000001816 cooling Methods 0.000 description 26
- 230000005855 radiation Effects 0.000 description 15
- 230000008901 benefit Effects 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Classifications
-
- 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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- 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
-
- 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
-
- 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
- H01M10/659—Means for temperature control structurally associated with the cells by heat storage or buffering, e.g. heat capacity or liquid-solid phase changes or transition
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The present invention provides a heat dissipation system of a battery module, the heat dissipation system including: the heat dissipation structure comprises a first heat conduction pipe, a second heat conduction pipe, a heat dissipation structure and at least one circulating water tank; liquid metal is arranged in the first heat conduction pipe and the second heat conduction pipe; the first heat conduction pipes are distributed in the battery box of the battery module in a snake shape, and the lithium battery of the battery module is clamped in the circuitous part of the first heat conduction pipes; the heat dissipation structure is arranged between the first heat conduction pipe and the lithium battery; the circulating water tank is arranged outside the battery box; the second heat conduction pipe is arranged in the circulating water tank and communicated with the first heat conduction pipe, and liquid metal in the first heat conduction pipe exchanges heat with cooling water in the circulating water tank after exchanging heat with the lithium battery; the heat dissipation structure is made of a phase-change composite material. According to the invention, the liquid metal with high heat dissipation speed and good heat dissipation effect is combined with the phase-change composite material with high heat conductivity to realize the quick and efficient heat dissipation of the lithium battery, the heat exchange speed is high, the working efficiency is high, and the heat dissipation efficiency and effect of the heat dissipation system on the lithium battery are improved.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a heat dissipation system of a battery module.
Background
Under the dual pressure of energy crisis and environmental pollution, electrification of vehicle power systems is becoming increasingly popular. Because lithium batteries have high energy density and long cycle life, they are often selected as vehicle-mounted energy storage devices to power electric vehicles, and are widely used in the field of electric vehicles due to their excellent stability and consistency. However, lithium batteries can only operate within a specific temperature range, and exceeding the temperature range can cause significant degradation of battery performance and even thermal runaway, which can be harmful to vehicles and drivers and passengers. When the external environment temperature is too high or the heat generation rate in the battery is high, the heat in the battery pack can be rapidly accumulated due to poor heat conduction performance among battery monomers and inside of the battery, so that the battery temperature is too high, and the performance and the cycle life of the battery are reduced; when the external environment temperature is too low, the activity of the electrolyte of the battery is reduced, the internal resistance of the battery is increased, and the battery cannot be charged and discharged normally. In order to prevent the occurrence of such problems, the design and implementation of a thermal management system for a battery pack are crucial, and the existing heat dissipation systems for power batteries can be mainly classified into three types: air cooling system, liquid cooling system and the hybrid cooling system of collocation heat pipe or semiconductor cooler. The air cooling system has a simple structure and low cost, but when the ambient temperature is high or the heat generating power in the battery pack is high, the air cooling heat dissipation effect is very limited; the liquid cooling system has good heat dissipation effect, the temperature consistency in the battery pack is high, but the system design complexity is high, the risks of liquid leakage and the like exist, and regular maintenance is needed; the hybrid cooling system based on the heat pipe or the semiconductor cooler can combine the heat dissipation advantage of an active cooling mode and the heat conduction advantage of a passive cooling mode, has good cooling and temperature equalization effects, but has high application cost and is mostly in a theoretical research stage.
The Chinese publication number is: CN 207368172U discloses a battery pack thermal management system applying phase change materials. The battery pack heat management system applying the phase-change material comprises a battery pack consisting of a plurality of battery cells, a sealed battery box and a heat exchanger, wherein a device coated by the phase-change material is arranged in a gap between single battery cells, the battery pack is arranged in the sealed battery box, and the heat exchanger is arranged outside a box body of the sealed battery box; the heating device is a PTC heater; the heat exchanger comprises a first cooling fan, a first cooling fin, a semiconductor refrigeration fin, a second cooling fin and a second cooling fan which are arranged in sequence.
According to the battery pack heat management system applying the phase-change material, the temperature of the power battery pack is regulated and controlled by using high heat conduction and phase-change enthalpy heat absorption of the phase-change material, but the phase-change material is cooled or heated by using stored or released heat when the material is subjected to phase change.
Disclosure of Invention
In view of this, the present invention provides a heat dissipation system for a battery module, which aims to solve the problem of low heat dissipation speed of the conventional battery pack.
The present invention provides a heat dissipation system of a battery module, the heat dissipation system including: the heat dissipation structure comprises a first heat conduction pipe, a second heat conduction pipe, a heat dissipation structure and at least one circulating water tank; liquid metal is arranged in the first heat conduction pipe and the second heat conduction pipe; the first heat conduction pipes are distributed in a battery box of the battery module in a snake shape, and a lithium battery of the battery module is clamped at the circuitous part of the first heat conduction pipes; the heat dissipation structure is arranged between the first heat conduction pipe and the lithium battery and used for dissipating heat generated during charging and discharging of the lithium battery; the circulating water tank is arranged outside the battery box; the second heat conduction pipe is arranged in the circulating water tank and communicated with the first heat conduction pipe, and after heat exchange is carried out between the liquid metal in the first heat conduction pipe and the lithium battery, the liquid metal flows into the second heat conduction pipe and carries out heat exchange with cooling water in the circulating water tank; the heat dissipation structure is made of a phase-change composite material.
Further, in the heat dissipation system of the battery module, the phase-change composite material includes a phase-change material and a capillary tube; the capillary tube is filled with liquid metal.
Further, in the heat dissipation system of the battery module, the mass proportion of the capillary tube in the phase-change composite material is less than or equal to 30%.
Further, in the heat dissipation system of the battery module, the length of the capillary tube is less than or equal to 1 cm.
Further, in the heat dissipation system of the battery module, the phase change material is polyethylene glycol, calcium chloride hexahydrate, sodium sulfate decahydrate, sodium acetate trihydrate, sodium hydrogen phosphate decahydrate, paraffin, n-decanoic acid, dodecanoic acid, tetradecanoic acid, hexadecanoic acid, octadecanoic acid, 2-dimethylolpropanol, neopentyl glycol or copper foam.
Further, in the heat dissipation system of the battery module, the phase-change composite material further includes metal, a heat pipe, graphite particles, and metal particles.
Further, in the heat dissipation system of the battery module, the liquid metal in the capillary, the first heat conduction pipe, and the second heat conduction pipe is gallium-magnesium alloy, gallium-indium-tin alloy, indium-tin-bismuth alloy, potassium-sodium alloy, or mercury.
Further, in the heat dissipation system of the battery module, the first heat conduction pipe is a copper pipe, an aluminum alloy pipe, a graphene pipe, an artificial graphite pipe, a natural graphite pipe, a carbon fiber pipe or a C/C composite material pipe; and/or the second heat conduction pipe is a copper pipe, an aluminum alloy pipe, a graphene pipe, an artificial graphite pipe, a natural graphite pipe, a carbon fiber pipe or a C/C composite material pipe.
Further, in the heat dissipation system of the battery module, the circulating water tank and/or the battery box are/is an aluminum alloy box body.
Further, in the heat dissipation system of the battery module, the second heat conduction pipe is in a capillary network structure.
According to the heat dissipation system of the battery module, the liquid metal with high heat dissipation speed and good heat dissipation effect in the first heat conduction pipe and the second heat conduction pipe is combined with the phase-change composite material with high heat conductivity to realize the quick and efficient heat dissipation of the lithium battery, and meanwhile, the liquid metal is cooled by the cooling water in the circulating water tank so as to continuously perform efficient heat dissipation on the lithium battery pack, so that the over-high or over-low temperature of the lithium battery is avoided, and the battery performance and the cycle life of the lithium battery are further ensured. Meanwhile, the phase-change composite material and the liquid metal have high heat conductivity, high heat exchange speed and high working efficiency, and the efficiency and the effect of the heat dissipation system for the lithium battery are improved.
In particular, the phase-change composite material with high thermal conductivity can dissipate heat and cool the lithium ion battery pack, the cooling speed is high, the working efficiency is high, the normal work of the battery can be ensured, meanwhile, the liquid metal is used as a heat conduction medium, and the thermal conductivity of the liquid metal is far higher than that of the traditional water, air and a plurality of non-metal media, so that the liquid metal has more efficient heat transportation and heat dissipation capabilities than the traditional air cooling and water cooling.
Further, the second heat pipe is of a capillary network structure, so that the contact area between the second heat pipe and cooling water is increased, the cooling efficiency of liquid metal in the second heat pipe is improved, and the efficiency of the heat dissipation system for heat dissipation of the lithium battery is further improved.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of a heat dissipation system of a battery module according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, which is a schematic structural diagram of a heat dissipation system of a battery module according to an embodiment of the present invention, as shown in the figure, the heat dissipation system includes: the heat pipe comprises a first heat conduction pipe 1, a second heat conduction pipe 2, a heat dissipation structure 3 and at least one circulation water tank 4; wherein the content of the first and second substances,
liquid metal is arranged in the first heat conduction pipe 1 and the second heat conduction pipe 2 and circularly flows in the first heat conduction pipe 1 and the second heat conduction pipe 2 so as to take out heat in the battery box 5; a plurality of lithium batteries are arranged in the battery box 5 of the battery module and are connected in series, in parallel or in series-parallel to form a battery pack. First heat pipe 1 snakelike distribution is in battery box 5 of battery module, the lithium cell card of battery module is located circuitous portion a of first heat pipe 1 is the space part between bending in the heat pipe, and this circuitous portion is used for blocking the battery and can makes first heat pipe 1 wind along the outer wall of lithium cell and establish, so, the heat of battery just can directly conduct for first heat pipe to improve the area of contact between first heat pipe 1 and the lithium cell, and then improve the efficiency that carries out the heat exchange between the liquid metal in first heat pipe 1 and the lithium cell, improve lithium cell radiating efficiency promptly. Wherein, the battery box 5 can be an aluminum alloy box body, and the thermal conductivity thereof is higher, so as to improve the heat dissipation efficiency of the battery box 5.
The heat dissipation structure 3 is arranged between the first heat conduction pipe 1 and the lithium battery and used for dissipating heat generated during charging and discharging of the lithium battery. For further improving heat radiation structure 3 and carrying out radiating efficiency to the lithium cell, preferably, heat radiation structure 3 closely covers along first heat conduction pipe outer wall, simultaneously, heat radiation structure 3 and the lithium cell in the group battery in close contact with to through the direct and lithium cell contact of heat radiation structure 3, the heat direct transfer that produces when the lithium cell charges and discharges promptly to heat radiation structure 3 on, so that carry out primary heat dissipation to the lithium cell through heat radiation structure 3. The heat that heat radiation structure 3 obtained carries out heat-conduction with the outer wall of first heat pipe 1, transmits the liquid metal in first heat pipe 1 through first heat pipe 1 and dispels the heat once more, and heat radiation structure 3 carries out the heat exchange with the liquid metal in first heat pipe 1 promptly to the heat transfer that produces when charging and discharging the lithium cell is to the liquid metal in first heat pipe 1. The first heat conduction pipe 1 is a copper pipe, an aluminum alloy pipe, a graphene pipe, an artificial graphite pipe, a natural graphite pipe, a carbon fiber pipe or a C/C composite material pipe; and/or, the second heat pipe 2 is a copper pipe, an aluminum alloy pipe, a graphene pipe, an artificial graphite pipe, a natural graphite pipe, a carbon fiber pipe or a C/C composite material pipe, and the heat conductivity of the second heat pipe is higher, so that the heat exchange efficiency between the heat radiation structure 3 and the lithium battery is improved, the heat exchange efficiency of the heat radiation structure 3 and the liquid metal is improved through the first heat pipe 1, and the heat radiation efficiency of the heat radiation system is further improved. The liquid metal in the first heat conduction pipe 1 and the second heat conduction pipe 2 is gallium-magnesium alloy, gallium-indium-tin alloy, indium-tin-bismuth alloy, potassium-sodium alloy or mercury, so as to further improve the efficiency of heat exchange between the liquid metal and the heat dissipation structure 3. The heat dissipation structure 3 is made of a phase-change composite material so as to improve the heat dissipation efficiency.
The circulation water tank 4 is arranged on one side outside the battery box 5, and the second heat conduction pipe 2 is arranged in the circulation water tank 4 and communicated with the first heat conduction pipe 1, so that the first heat conduction pipe 1 penetrates through the outer wall of the battery box 5 from the inside of the battery box 5, penetrates through the second heat conduction pipe 2 in the circulation water tank 4, then penetrates through the outer wall of the battery box 5 again and returns to the first heat conduction pipe 1 in the battery box 5, and a complete circulation loop is formed. After the heat exchange is carried out between the liquid metal in the first heat conduction pipe 1 and the lithium battery, the liquid metal flows into the second heat conduction pipe 2 and carries out the heat exchange with the cooling water in the circulating water tank 4, so that the cooling water circulating and flowing in the circulating water tank 4 can take away the heat of the liquid metal with high efficiency, the heat dissipation of the lithium battery is further realized with high efficiency, and the operation safety of the battery is maintained. To further improve the cooling efficiency of the liquid metal in the second heat exchanger tube 2, i.e. the efficiency of heat exchange between the liquid metal and the cooling water, it is preferable that the second heat exchanger tube 2 has a capillary-vessel network structure, so as to increase the contact area between the second heat exchanger tube 2 and the cooling water, and further improve the cooling efficiency of the liquid metal in the second heat exchanger tube 2. Wherein, the circulation water tank 4 may be an aluminum alloy tank body, the heat conductivity of which is high, so as to improve the heat dissipation efficiency of the battery box 5.
Further, the heat dissipation structure 3 may be an annular sleeve structure sleeved outside the first heat pipe 1 or a heat dissipation layer, such as a plate structure, disposed between the first heat pipe 1 and the lithium battery; the phase-change composite material comprises phase-change materials, metal, heat pipes, capillaries, graphite particles, metal particles and the like. Preferably, the phase change composite consists of a phase change material and a capillary tube. Further preferably, the capillary is filled with liquid metal, so as to further improve the efficiency of the phase-change composite material in heat dissipation of the lithium battery. Wherein the length of the capillary is less than or equal to 5 millimeters; preferably, the length of the capillary tube does not exceed 2 mm; further preferably, the length of the capillary tube is no more than 1 cm. Wherein, the capillary filled with liquid metal accounts for no more than 30% of the phase-change composite material by mass; preferably, the mass proportion of the capillary filled with the liquid metal in the phase-change composite material is not more than 15%; further preferably, the capillary tube filled with the liquid metal inside accounts for no more than 5% by mass of the phase change composite material. The phase-change material is polyethylene glycol, calcium chloride hexahydrate, sodium sulfate decahydrate, sodium acetate trihydrate, sodium hydrogen phosphate decahydrate, paraffin, n-decanoic acid, dodecanoic acid, tetradecanoic acid, hexadecanoic acid, octadecanoic acid, 2-dimethylolpropanol (PG), neopentyl glycol (NPG) or copper foam.
Referring to fig. 1, the operation of the heat dissipation system of the battery module provided in the present embodiment will now be described in detail:
the heat that produces when charging and discharging through heat radiation structure 3 carries out elementary heat dissipation to the lithium cell, the heat that heat radiation structure 3 obtained carries out heat-conduction with the outer wall of first heat pipe 1, the liquid metal in first heat pipe 1 is given through first heat pipe 1 transmission, heat radiation structure 3 carries out heat exchange once more with the liquid metal in first heat pipe 1 promptly, so that the heat that produces when charging and discharging the lithium cell transmits the liquid metal in first heat pipe 1 in proper order, the liquid metal in first heat pipe 1 flows extremely in the second heat pipe 2 and with the cooling water in circulation tank 4 carries out the heat exchange, so that make the cooling water that circulation flows in circulation tank 4 will take away the heat of liquid metal high-efficiently, and then realize the heat dissipation of lithium cell high-efficiently, thereby maintain battery operation safety.
To sum up, the cooling system of the battery module that this embodiment provided, it is fast to dispel the heat in through first heat pipe 1 and second heat pipe 2, the liquid metal that the radiating effect is good combines the quick high efficiency ground heat dissipation that realizes the lithium cell with the phase change composite material of high thermal conductivity, and simultaneously, cooling water through in the circulating water tank 4 carries out cooling to liquid metal so that continuously carry out high efficiency heat dissipation to lithium ion battery group, so that avoid the lithium cell high temperature or cross lowly, and then ensured the battery performance and the cycle life of lithium cell. Meanwhile, the phase-change composite material and the liquid metal have high heat conductivity, high heat exchange speed and high working efficiency, and the efficiency and the effect of the heat dissipation system for the lithium battery are improved.
In particular, the phase-change composite material with high thermal conductivity can dissipate heat and cool the lithium ion battery pack, the cooling speed is high, the working efficiency is high, the normal work of the battery can be ensured, meanwhile, the liquid metal is used as a heat conduction medium, and the thermal conductivity of the liquid metal is far higher than that of the traditional water, air and a plurality of non-metal media, so that the liquid metal has more efficient heat transportation and heat dissipation capabilities than the traditional air cooling and water cooling.
Further, the second heat pipe 2 is a capillary network structure, so as to increase the contact area between the second heat pipe 2 and the cooling water, and further improve the cooling efficiency of the liquid metal in the second heat pipe 2, thereby further improving the efficiency of the heat dissipation system for the heat dissipation of the lithium battery.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. A heat dissipation system for a battery module, comprising: the heat-conducting device comprises a first heat-conducting pipe (1), a second heat-conducting pipe (2), a heat-radiating structure (3) and at least one circulating water tank (4); wherein the content of the first and second substances,
liquid metal is arranged in the first heat-conducting pipe (1) and the second heat-conducting pipe (2);
the first heat conduction pipes (1) are distributed in a battery box (5) of the battery module in a snake shape, and a lithium battery arranged in the battery box (5) in the battery module is clamped at a circuitous part of the first heat conduction pipes (1) so that the first heat conduction pipes (1) are wound along the outer wall of the lithium battery;
the heat dissipation structure (3) is arranged between the first heat conduction pipe (1) and the lithium battery, the heat dissipation structure (3) is respectively contacted with the outer wall of the first heat conduction pipe (1) and the lithium battery, and the heat dissipation structure (3) and the first heat conduction pipe (1) are used for dissipating heat generated during charging and discharging of the lithium battery; the heat dissipation structure (3) is an annular sleeve structure sleeved outside the first heat conduction pipe (1) or a heat dissipation layer arranged between the first heat conduction pipe (1) and the lithium battery;
the circulating water tank (4) is arranged outside the battery box (5);
the second heat conduction pipe (2) is arranged in the circulating water tank (4) and communicated with the first heat conduction pipe (1), and after heat exchange is carried out between the liquid metal in the first heat conduction pipe (1) and the lithium battery, the liquid metal flows into the second heat conduction pipe (2) and carries out heat exchange with cooling water in the circulating water tank (4); the second heat conduction pipe (2) is of a capillary vessel net structure;
the heat dissipation structure (3) is made of a phase-change composite material, the phase-change composite material comprises a phase-change material and a capillary tube, and liquid metal is filled in the capillary tube.
2. The heat dissipation system of a battery module according to claim 1,
the mass proportion of the capillary tubes in the phase-change composite material is less than or equal to 30%.
3. The heat dissipation system of a battery module according to claim 1,
the length of the capillary tube is less than or equal to 1 centimeter.
4. The heat dissipation system of a battery module according to claim 1,
the phase-change material is polyethylene glycol, calcium chloride hexahydrate, sodium sulfate decahydrate, sodium acetate trihydrate, sodium hydrogen phosphate decahydrate, paraffin, n-decanoic acid, dodecanoic acid, tetradecanoic acid, hexadecanoic acid, octadecanoic acid, 2-dimethylolpropanol, neopentyl glycol or copper foam.
5. The heat dissipation system of a battery module according to claim 1,
the liquid metal in the capillary tube, the first heat conduction pipe (1) and the second heat conduction pipe (2) is gallium-magnesium alloy, gallium-indium-tin alloy, indium-tin-bismuth alloy, potassium-sodium alloy or mercury.
6. The heat dissipation system of a battery module according to any one of claims 1 to 5,
the first heat conduction pipe (1) is a copper pipe, an aluminum alloy pipe, a graphene pipe, an artificial graphite pipe, a natural graphite pipe, a carbon fiber pipe or a C/C composite material pipe; and/or the presence of a gas in the gas,
the second heat conduction pipe (2) is a copper pipe, an aluminum alloy pipe, a graphene pipe, an artificial graphite pipe, a natural graphite pipe, a carbon fiber pipe or a C/C composite material pipe.
7. The heat dissipation system of a battery module according to any one of claims 1 to 5,
the circulating water tank (4) and/or the battery box (5) are aluminum alloy box bodies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003852.0A CN109346795B (en) | 2018-08-30 | 2018-08-30 | Heat dissipation system of battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811003852.0A CN109346795B (en) | 2018-08-30 | 2018-08-30 | Heat dissipation system of battery module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109346795A CN109346795A (en) | 2019-02-15 |
| CN109346795B true CN109346795B (en) | 2021-09-10 |
Family
ID=65292282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811003852.0A Active CN109346795B (en) | 2018-08-30 | 2018-08-30 | Heat dissipation system of battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109346795B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110234214B (en) * | 2019-06-12 | 2020-06-30 | 哈尔滨工业大学 | Electrically-driven liquid metal heat dissipation assembly |
| CN113659231A (en) * | 2021-07-31 | 2021-11-16 | 北京嘉星众诚医疗科技有限公司 | Constant-temperature power supply battery pack system |
| CN115548507B (en) * | 2022-08-29 | 2023-11-14 | 西安交通大学 | Direct cooling and phase change cooling coupled battery thermal management system and manufacturing method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206379441U (en) * | 2017-01-18 | 2017-08-04 | 华霆（合肥）动力技术有限公司 | A kind of heat management device and electrical source of power device |
| CN106785219B (en) * | 2017-01-19 | 2019-12-27 | 清华大学深圳研究生院 | Electric automobile, infusion device matched with electric automobile and heat dissipation method |
| CN107104252A (en) * | 2017-05-02 | 2017-08-29 | 安徽江淮松芝空调有限公司 | A kind of battery water cooling plant for electric car |
| CN107482276B (en) * | 2017-08-04 | 2019-09-24 | 云南靖创液态金属热控技术研发有限公司 | A kind of battery heat dissipation device using liquid metal |
| CN107994290A (en) * | 2017-11-24 | 2018-05-04 | 西安交通大学 | A kind of batteries of electric automobile compound thermal management system |
| CN108110370B (en) * | 2017-12-13 | 2020-08-11 | 哈尔滨理工大学 | Power battery box cooling structure and control method thereof |
-
2018
- 2018-08-30 CN CN201811003852.0A patent/CN109346795B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109346795A (en) | 2019-02-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Subramanian et al. | A technical review on composite phase change material based secondary assisted battery thermal management system for electric vehicles | |
| Patel et al. | Recent developments in the passive and hybrid thermal management techniques of lithium-ion batteries | |
| Putra et al. | Performance of beeswax phase change material (PCM) and heat pipe as passive battery cooling system for electric vehicles | |
| Olabi et al. | Battery thermal management systems: Recent progress and challenges | |
| CN108199114B (en) | Battery thermal management system, control method thereof and vehicle air conditioning system | |
| Yu et al. | A review of battery thermal management systems about heat pipe and phase change materials | |
| CN109346795B (en) | Heat dissipation system of battery module | |
| CN107346814B (en) | Battery thermal management system | |
| CN106785219B (en) | Electric automobile, infusion device matched with electric automobile and heat dissipation method | |
| Mohammed et al. | Thermal management evaluation of Li-ion battery employing multiple phase change materials integrated thin heat sinks for hybrid electric vehicles | |
| CN102544567A (en) | Power battery module with liquid cooling system | |
| CN102544619A (en) | Heat sink of battery cell for electric vehicles and battery cell module using the same | |
| CN110071348A (en) | Based on the cooling power battery thermal management system of composite phase-change material and its application | |
| CN108232359B (en) | Power battery system based on gas-liquid two-phase heat dissipation and heat energy recovery | |
| CN107681224B (en) | A kind of phase transformation liquid cooling combination cooling device of ferric phosphate lithium cell group | |
| CN102709618A (en) | Microchannel cooling temperature equalizing system for ventilation of lithium battery | |
| CN106785236B (en) | Thermal management system and method for cylindrical battery pack | |
| CN210430029U (en) | Plate-type heating and cooling heat conduction device and temperature-controllable lithium battery pack adopting same | |
| CN115458832A (en) | Power battery cooling system with synergistic effect of multi-element composite phase change material and water cooling | |
| CN209029509U (en) | A kind of battery modules heat management device based on phase-change material and heat pipe collaboration heat dissipation | |
| CN108281736A (en) | A kind of cooling device that rectangle power battery is stacked | |
| CN113410538B (en) | Liquid cooling battery package structure of trompil foamed aluminum heat dissipation runner | |
| CN107681228A (en) | A kind of high multiplying power lithium ion power battery module heat pipe liquid-cooling heat radiator | |
| Fathoni et al. | A systematic review of battery thermal management systems based on heat pipes | |
| Khan et al. | A state-of-the-art review on heating and cooling of lithium-ion batteries for electric vehicles |
Legal Events
| 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |