CN113517498A - Lithium battery cooling module based on liquid cooling - Google Patents
Lithium battery cooling module based on liquid cooling Download PDFInfo
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- CN113517498A CN113517498A CN202110506515.9A CN202110506515A CN113517498A CN 113517498 A CN113517498 A CN 113517498A CN 202110506515 A CN202110506515 A CN 202110506515A CN 113517498 A CN113517498 A CN 113517498A
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- cooling
- lithium battery
- liquid
- cooling channel
- vortex tube
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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
- H01M10/65—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
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
- H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
- H01M10/0566—Liquid materials
- H01M10/0568—Liquid materials characterised by the solutes
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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
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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
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
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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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a liquid cooling-based lithium battery cooling module, which comprises two vortex tube cooling channels and a lithium battery pack, wherein the lithium battery pack comprises a plurality of independent lithium batteries, the vortex tube cooling channels are divided into a first vortex tube cooling channel and a second vortex tube cooling channel, the first vortex tube cooling channel and the second vortex tube cooling channel are spirally and outwards surrounded from the center of the cooling module to form the cooling module with a coil pipe structure, and the lithium battery pack is fixed on the cooling module to realize cooling and heat dissipation of the bottom of the lithium batteries. The invention has simple structure, the cooling channel is designed to be square, the contact area between the cooling liquid and the upper surface of the vortex tube can be increased, and the heat exchange efficiency is high; the flow directions of cooling liquid in the two scroll-shaped pipe channels are opposite, so that the temperature among the batteries can be more uniform, and the working efficiency of the battery pack is improved; the gaps among the lithium batteries are filled with the sealant, so that the damping capacity of the battery pack is enhanced, damaged battery monomers can be isolated, the contents of the battery monomers can be prevented from corroding other batteries, and the safety of the whole module is improved.
Description
Technical Field
The invention relates to the technical field of battery pack thermal management, in particular to a liquid cooling-based lithium battery cooling module.
Background
In recent years, with the vigorous development of new energy industries in China, lithium ion batteries have also been developed rapidly. Lithium ion batteries are widely used in power supply equipment of new energy electric vehicles, ships, airplanes and the like. However, the application of the lithium battery has many problems, and the discharge efficiency of the battery is low and the cycle service life of the battery is also reduced due to a large amount of heat generated in the working process of the lithium battery, and serious safety accidents such as thermal runaway and the like can occur in serious cases, which is an important factor restricting the development of the lithium battery. The maximum temperature and temperature uniformity during operation of a lithium battery module are two major factors affecting the performance of the entire battery system. On the one hand, if the battery temperature exceeds the limit temperature, the battery performance may be rapidly degraded, and even the battery may be cracked and exploded. On the other hand, uneven temperature distribution of the battery pack may cause a reduction in the operating efficiency of the battery and a reduction in the life span of the cycle. Therefore, the power lithium battery pack needs to adopt a proper cooling device to ensure the efficient and stable operation of the battery.
The current battery thermal management technologies mainly comprise: an air cooling mode; a liquid cooling mode; phase change material cooling means. Although air cooling is low in cost and simple in structure, the cooling capacity is weak, and the thermal management requirement of the power battery with high energy density is difficult to meet. The highest temperature of the lithium battery pack cooled by the liquid cooling heat dissipation method can be generally controlled within a proper range, but the temperature difference between the inlet and the outlet of the cooling liquid is large, and the temperature of the whole battery pack is increased gradually. It can result in the cells charging and discharging at different rates throughout the battery, resulting in a reduction in the overall performance of the battery. The phase change material can be efficiently cooled and the temperature uniformity of the battery pack can be improved. However, the volume change of the desired change material during the phase change makes it difficult to package, which limits its practical application in automotive batteries.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a liquid cooling-based lithium battery cooling module to ensure that the highest temperature of a battery pack is controlled within a proper range and the temperature uniformity of a battery is effectively guaranteed.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a lithium cell cooling module based on liquid cooling, includes vortex pipe cooling channel and sets up the lithium cell group on vortex pipe cooling channel, lithium cell group comprises a plurality of lithium cells of fixing on vortex pipe cooling channel, vortex pipe cooling channel has two, is first vortex pipe cooling channel and second vortex pipe cooling channel respectively, first vortex pipe cooling channel and second vortex pipe cooling channel are the outside cooling module that encircles formation coil structure of screw-tupe by cooling module center, lithium cell group fixes the cooling heat dissipation that realizes each lithium cell bottom in the group battery on this cooling module.
And a first battery limiting hole and a second battery limiting hole for fixing and positioning the lithium battery are respectively arranged on the first vortex-shaped pipe cooling channel and the second vortex-shaped pipe cooling channel.
The cooling channel of the vortex tube is a square tube, the nozzle is a cylindrical tube opening, and cooling liquid flows in the cooling channel of the vortex tube.
A first cooling liquid inlet, a first cooling liquid outlet, a second cooling liquid inlet and a second cooling liquid outlet are respectively arranged at two ends of the first vortex-shaped tube cooling channel and the second vortex-shaped tube cooling channel, the first cooling liquid inlet and the second cooling liquid outlet are arranged at the center or the outermost ring of the cooling module, and the corresponding first cooling liquid outlet and the corresponding second cooling liquid inlet are arranged at the outermost ring or the center of the cooling module; when the cooling module cools and dissipates heat of the lithium battery pack, the flowing directions of cooling liquid in the two cooling channels of the vortex pipes are opposite.
Furthermore, an insulating heat-conducting rubber pad is arranged in a limiting hole in the cooling channel of the scroll pipe, and the lithium battery pack and the limiting hole are separated through the insulating heat-conducting rubber pad.
Furthermore, organic silicon sealant is filled in gaps among lithium batteries of the lithium battery pack.
Furthermore, the lithium battery of the lithium battery pack can be cylindrical, oval or square, and the limiting hole in the cooling channel of the scroll pipe corresponds to the shape of the lithium battery.
The invention has the beneficial effects that:
1. the cooling liquid flows in one forward flow and in the other reverse flow in the two cooling pipelines, so that the temperature uniformity of the whole battery pack is effectively improved, the working efficiency of the battery is improved, and the service life of the battery is prolonged;
2. because the axial thermal conductivity of the columnar lithium battery is much higher than the radial and tangential thermal conductivities, the heat generated by the battery can be rapidly cooled down by adopting a bottom plate cooling mode, so that the temperature is not too high, the demand of cooling liquid is reduced, and the energy consumption of a liquid cooling system is reduced;
3. the bottom of the battery is separated from the cooling pipeline through an insulated heat conducting pad, so that the risk of liquid leakage is effectively prevented; the gaps among the batteries are filled with the gap filling glue, so that the batteries can be fixed, the shock absorption capacity of the whole battery module can be improved, and the thermal runaway can be prevented.
Drawings
Fig. 1 is a schematic structural diagram of a liquid cooling-based lithium battery cooling module according to the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a schematic diagram of a lithium battery pack according to the present invention;
FIG. 4 is a schematic view of the first scroll cooling channel of the present invention;
FIG. 5 is a schematic view of a second scroll cooling channel according to the present invention;
FIG. 6 is a schematic view of the internal flow path of the scroll passage of the present invention;
in the figure: 1. a lithium battery pack; 2. a first scroll cooling channel; 201. a first battery limiting hole; 202. a first coolant inlet; 203. a first coolant outlet; 3. a second scroll cooling passage; 301. a second battery limiting hole; 302. a second coolant inlet; 303. and a second cooling liquid outlet.
Detailed Description
The invention is further illustrated by the following detailed description in conjunction with the drawings and examples.
Example (b): see fig. 1-6.
The invention provides a liquid-cooling-based lithium battery cooling module, which comprises a scroll-shaped pipe cooling channel and a lithium battery pack 1 arranged on the scroll-shaped pipe cooling channel as shown in figure 1, wherein the lithium battery pack 1 is composed of a plurality of cylindrical lithium batteries as shown in figure 3, the number of the scroll-shaped pipe cooling channels is two, the scroll-shaped pipe cooling channels are respectively a first scroll-shaped pipe cooling channel 2 and a second scroll-shaped pipe cooling channel 3, the first scroll-shaped pipe cooling channel 2 and the second scroll-shaped pipe cooling channel 3 are wound outwards in a spiral mode from the center of the cooling module to form the cooling module with a coil pipe structure, and the lithium battery pack 1 is fixed on the cooling module to realize cooling and heat dissipation of the bottoms of the lithium batteries in the battery pack.
As shown in fig. 2, the first scroll cooling channel 2 and the second scroll cooling channel 3 are respectively provided with a first battery retaining hole 201 and a second battery retaining hole 301 for fixing and positioning a lithium battery.
As shown in fig. 4 and 5, a first cooling liquid inlet 202, a first cooling liquid outlet 203, a second cooling liquid inlet 302 and a second cooling liquid outlet 303 are respectively arranged at two ends of the first scroll cooling channel 2 and the second scroll cooling channel 3, the first cooling liquid inlet 202 and the second cooling liquid outlet 303 are arranged at the center or the outermost circle of the cooling module, and the corresponding first cooling liquid outlet 203 and the second cooling liquid inlet 302 are arranged at the outermost circle or the center of the cooling module; when the cooling module cools and dissipates heat of the lithium battery pack 1, the flowing directions of cooling liquid in the two cooling channels of the vortex pipes are opposite.
As shown in fig. 6, the cooling channel of the scroll is a square tube, the nozzle is a cylindrical nozzle, and the cooling liquid flows in the cooling channel of the scroll.
The liquid-cooling-based lithium battery cooling module is simple in structure, the cooling channel is designed to be square, so that the contact area between the cooling liquid and the upper surface of the vortex tube can be increased, and the heat exchange efficiency is high; the flow directions of cooling liquid in the two scroll-shaped pipe passages are opposite, so that the temperature difference of the battery pack is reduced, the temperature is more uniform, and the integral working efficiency of the battery pack is improved; meanwhile, the battery pack is separated from the cooling channel through an insulated heat conduction pad, so that the danger of leakage of cooling liquid can be effectively prevented;
the space between each battery is filled with the organosilicon sealant of low density, can effectively strengthen the shock-absorbing capacity of whole group battery, can also effectively keep apart the battery monomer out of control or damage, prevents that its content from corroding other batteries, has promoted the security of whole module, and the sealed low density's of organosilicon characteristic can not make whole module overweight.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and are not limited. Although the present invention has been described in detail with reference to the embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. The utility model provides a lithium cell cooling module based on liquid cooling, includes vortex tube cooling channel and sets up lithium cell group (1) on vortex tube cooling channel, its characterized in that, lithium cell group (1) comprises a plurality of lithium cells of fixing on vortex tube cooling channel, vortex tube cooling channel has two, is first vortex tube cooling channel (2) and second vortex tube cooling channel (3) respectively, first vortex tube cooling channel (2) and second vortex tube cooling channel (3) are the outside cooling module who encircles formation coil structure of screw-tupe by cooling module center, lithium cell group (1) is fixed and is realized the cooling heat dissipation to each lithium cell bottom of group battery on this cooling module.
2. The liquid-cooled lithium battery cooling module according to claim 1, wherein the first scroll cooling channel (2) and the second scroll cooling channel (3) are respectively provided with a first battery limiting hole (201) and a second battery limiting hole (301) for fixing and positioning the lithium battery.
3. The liquid-cooled lithium battery cooling module according to claim 1, wherein the scroll cooling channel is a square tube, the nozzle is a cylindrical nozzle, and the scroll cooling channel has a cooling liquid flowing therein.
4. The liquid-cooled lithium battery cooling module according to claim 1, wherein a first cooling liquid inlet (202), a first cooling liquid outlet (203), a second cooling liquid inlet (302) and a second cooling liquid outlet (303) are respectively arranged at two ends of the first scroll cooling channel (2) and the second scroll cooling channel (3), the first cooling liquid inlet (202) and the second cooling liquid outlet (303) are arranged at the center or the outermost circle of the cooling module, and the corresponding first cooling liquid outlet (203) and the corresponding second cooling liquid inlet (302) are arranged at the outermost circle or the center of the cooling module; when the cooling module cools and dissipates heat of the lithium battery pack (1), the flowing directions of cooling liquid in the two cooling channels of the vortex pipes are opposite.
5. The liquid-cooled lithium battery cooling module according to claim 1, wherein an insulating and heat-conducting rubber pad is disposed in the limiting hole of the cooling channel of the scroll, and the lithium battery pack (1) is separated from the limiting hole by the insulating and heat-conducting rubber pad.
6. The liquid-cooled lithium battery cooling module according to claim 1, wherein the spaces between the lithium batteries of the lithium battery pack (1) are filled with silicone sealant.
7. The liquid-cooled lithium battery cooling module according to claim 1, wherein the lithium battery pack (1) has a shape of a lithium battery, which is cylindrical, elliptical or square, and the limiting hole of the cooling channel of the scroll pipe corresponds to the shape of the lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110506515.9A CN113517498A (en) | 2021-05-10 | 2021-05-10 | Lithium battery cooling module based on liquid cooling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110506515.9A CN113517498A (en) | 2021-05-10 | 2021-05-10 | Lithium battery cooling module based on liquid cooling |
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| Publication Number | Publication Date |
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| CN113517498A true CN113517498A (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110506515.9A Pending CN113517498A (en) | 2021-05-10 | 2021-05-10 | Lithium battery cooling module based on liquid cooling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115483482A (en) * | 2022-10-18 | 2022-12-16 | 西安交通大学 | Curling type liquid cooling battery thermal management system |
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2021
- 2021-05-10 CN CN202110506515.9A patent/CN113517498A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115483482A (en) * | 2022-10-18 | 2022-12-16 | 西安交通大学 | Curling type liquid cooling battery thermal management system |
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