CN210074101U - Three-dimensional heat pipe radiator applied to heat dissipation of power battery - Google Patents
Three-dimensional heat pipe radiator applied to heat dissipation of power battery Download PDFInfo
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- CN210074101U CN210074101U CN201921355002.7U CN201921355002U CN210074101U CN 210074101 U CN210074101 U CN 210074101U CN 201921355002 U CN201921355002 U CN 201921355002U CN 210074101 U CN210074101 U CN 210074101U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The application discloses a three-dimensional heat pipe radiator applied to heat dissipation of a power battery, which comprises an evaporation plate, a condensation plate and a fin heat sink; the evaporation plate is vertically arranged on one side of the condensation plate, the fin is arranged on the other side of the condensation plate in a heat sink mode, the evaporation plate and the condensation plate are provided with inner cavities, the evaporation plate and the condensation plate are communicated to form a closed cavity, the closed cavity is vacuumized and filled with working media, a liquid absorption core is further arranged in the evaporation plate, and the liquid absorption core is communicated with the inner cavity of the condensation plate; the evaporating plate comprises a main evaporating plate and a plurality of auxiliary evaporating plates, the main evaporating plate is arranged along the central line of the condensing plate, the auxiliary evaporating plates are uniformly arranged on two sides of the main evaporating plate, the main evaporating plate is communicated with the inner parts of the auxiliary evaporating plates, and the adjacent auxiliary evaporating plates, the main evaporating plate and the condensing plate form a battery storage cavity. The battery heat dissipation device can ensure that each battery obtains the same heat dissipation effect, and avoids the problem that independent heat pipes are different in heat dissipation.
Description
Technical Field
The application relates to the technical field of battery heat dissipation, in particular to a three-dimensional heat pipe radiator applied to heat dissipation of a power battery.
Background
The battery produces chemical reaction when charging and discharging, and battery temperature risees, and chemical reaction is more violent, if can not in time take away the heat that produces, chemical reaction is difficult to control, will reduce the life of battery, even explodes, and the security problem is difficult to guarantee. The optimum temperature of the automobile power battery is between 25 and 40 ℃, and the temperature difference of the single battery does not exceed 5 ℃. The mainstream modes of the present are air cooling, liquid cooling and phase change material heat transfer. The requirement of large-rate charge and discharge is difficult to satisfy only by air cooling, and the temperature uniformity is poor; the liquid cooling heat dissipation mode has high efficiency, but if better temperature uniformity needs to be ensured, the arrangement of liquid cooling runners is complex, and the liquid cooling may also generate leakage risk; phase change materials have a low thermal conductivity and can increase overall mass, reducing cell compactness.
Aiming at battery thermal management, most heat needs to be taken away in time, the temperature equalizing capacity is high, the heat pipe is used as a device for transferring heat by means of phase change, particularly a two-dimensional heat dissipating flat heat pipe appearing in recent years, the heat pipe can meet the requirement of heat dissipation and can achieve a certain temperature equalizing effect, and the heat pipe is simple in structure, free of moving parts and capable of being matched with a compact structure of a battery.
The heat pipe is a device for transferring heat by latent heat of gas-liquid phase change of a working medium, and the heat which can be transferred is dozens of times or even hundreds of times of that of the best heat-conducting metal. The three-dimensional flat heat pipe is a novel heat dissipation medium designed according to the principle of the heat pipe, the main structure of the three-dimensional flat heat pipe is composed of a shell, a liquid suction core, a working medium and the like, the working principle of the three-dimensional flat heat pipe is that an evaporation end absorbs heat and gasifies, pressure is increased, steam flows to a condensation end with lower pressure from a high-pressure area, heat at the condensation end is taken away by a heat sink, the working medium is liquefied, and flows back to the evaporation end again.
However, in the existing battery thermal management system using heat pipes to dissipate heat, a plurality of independent heat pipes are simply coupled with a battery to dissipate heat from the condensation ends of the heat pipes, and for a battery pack including a plurality of single batteries, the heat dissipation obtained by the heat pipes at different positions is different, so that temperature difference can be generated among the single batteries.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a three-dimensional heat pipe solves among the prior art heat dissipation that the heat pipe of different positions obtained and respectively differs, leads to the problem that can produce the difference in temperature between each battery cell.
In view of the above, the present application provides a three-dimensional heat pipe radiator applied to heat dissipation of a power battery, which includes an evaporation plate, a condensation plate and a fin heat sink;
the evaporation plate is vertically arranged on one side of the condensation plate, the fin is arranged on the other side of the condensation plate in a heat sink mode, the evaporation plate and the condensation plate are provided with inner cavities, the evaporation plate and the condensation plate are communicated to form a closed cavity, the closed cavity is vacuumized and filled with working media, a liquid absorption core is further arranged in the evaporation plate, and the liquid absorption core is communicated with the inner cavity of the condensation plate;
the evaporation plate comprises a main evaporation plate and a plurality of auxiliary evaporation plates, the main evaporation plate is arranged along the central line of the condensation plate, the auxiliary evaporation plates are uniformly arranged on two sides of the main evaporation plate, the main evaporation plate is communicated with the inside of the auxiliary evaporation plate, the auxiliary evaporation plates on the same side are parallel to each other, and adjacent auxiliary evaporation plates, the main evaporation plate and the condensation plate form a battery storage cavity.
Preferably, the filling rate of the working medium is between 30% and 60% of the volume of the closed chamber.
Preferably, the auxiliary evaporation plates are distributed on two sides of the main evaporation plate in a staggered manner, so that the main evaporation plate and the auxiliary evaporation plates are in a fishbone structure.
Preferably, the angle between the secondary evaporating plate and the primary evaporating plate is between 40 ° and 80 °.
Preferably, the wick is copper foam.
Preferably, the porosity of the copper foam decreases gradually from the condensation plate to the end of the evaporation plate.
Preferably, the surface of the condensation plate is provided with a hydrophobic layer.
Preferably, the surface of the evaporation plate is provided with a silicone layer.
Preferably, the fin heat sinks are square columns, and the square columns are distributed on the condensation plate in a staggered mode.
Preferably, a fan is provided at an upper end of the condensation plate at a side connected to the finned heat sink.
Compared with the prior art, the embodiment of the application has the advantages that:
the application provides a three-dimensional heat pipe mainly includes that overall structure is the evaporating plate of fishbone shape structure, condensing plate and fin heat sink structure, the evaporating plate designs with the condensing plate is perpendicular, form airtight cavity, airtight cavity is taken out into vacuum state and is filled the working medium, the evaporation behind the heat that the working medium absorption battery produced, evaporate to condensing plate department, one side of condensing plate is equipped with fin heat sink and fan, can release the heat with the working medium liquefaction, the working medium after the liquefaction gets back to again under the capillary force effect of gravity and foamy copper imbibition core in the evaporating plate. The utility model provides an evaporating plate is the fishbone shape and distributes, packs into the battery after, and every department evaporating end all communicates with the same condensation end on the evaporating plate, and the radiating effect of same condensation end is the same for the evaporating plate radiating effect of different positions is unanimous, has guaranteed that the heat dissipation of battery is more even, and mutual difference in temperature reduces between each battery cell, has improved the temperature uniformity when charging and discharging.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic overall structure of the present application;
FIG. 2 is a schematic view of the present application showing the overall structure of the battery assembly;
fig. 3 is a rear view of the present application.
In the figure: 1-a main evaporation plate; 2-auxiliary evaporating plate; 3-a cold plate; 4-fin heat sink; 5-a battery.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Example 1
Referring to fig. 1-3, the present embodiment provides a three-dimensional heat pipe radiator applied to heat dissipation of a power battery, including an evaporation plate, a condensation plate 3 and a fin heat sink 4, where the evaporation plate includes a main evaporation plate 1 and a plurality of auxiliary evaporation plates 2, the evaporation plate is vertically disposed on one side of the condensation plate 3, the fin heat sink 4 is disposed on the other side of the condensation plate 3, both the evaporation plate and the condensation plate 3 have inner cavities, the inner cavities of the evaporation plate and the condensation plate 3 are communicated to form a sealed chamber, the sealed chamber is evacuated and filled with a working medium, a liquid filling rate of the working medium is 30% to 60% of the volume of the sealed chamber, that is, the volume of the working medium filled in the sealed chamber is 30% to 60% of the volume of the sealed chamber, a specific value of the liquid filling rate can be adjusted according to a specific application environment, a liquid absorption core is disposed in the evaporation plate, and the liquid.
The central line setting of condensation plate 3 is followed to main evaporating plate 1, vice evaporating plate 2 sets up in main evaporating plate 1 both sides uniformly, the contained angle between vice evaporating plate 2 and the main evaporating plate 1 is 50, main evaporating plate 1 and the inside intercommunication of vice evaporating plate 2, adjacent vice evaporating plate 2 and main evaporating plate 1, condensation plate 3 forms the battery and stores the chamber, the distance that lies in between the adjacent vice evaporating plate 2 of main evaporating plate 1 same side is the width of battery promptly, this distance can be based on the specific width of the battery of depositing and design, in this example with the adjacent vice evaporating plate 2 of same side be parallel to each other, the distance between the two is 26mm, the vice evaporating plate 2 staggered arrangement of different sides, the vice evaporating plate 2 adjacent at main evaporating plate 1 different sides is 10mm at fore-and-aft distance, make main evaporating plate 1 and vice evaporating plate 2 be the fishbone structure.
Main evaporating plate 1 in this embodiment, vice evaporating plate 2 and condensing plate 3 all adopt thickness to be 1 mm's copper or aluminium, ten batteries can be saved to this embodiment, and six vice evaporating plates 2 have been equipped with respectively to the equipartition in the both sides of main evaporating plate 1 promptly, form five battery storage chambers, and main evaporating plate 1 both sides add up to ten battery storage chambers, and the height of main evaporating plate 1 is 100mm, and the width and the height of condensing plate 3 are 157.2mm and 182mm respectively. The sizes of the main evaporation plate 1, the auxiliary evaporation plates 2 and the condensation plates 3 and the number of the auxiliary evaporation plates 2 in the embodiment can be adjusted according to actual conditions, for example, if two batteries are added, one auxiliary evaporation plate 2 is respectively added on two sides of the main evaporation plate 1, the length of the main evaporation plate 1 is prolonged to be capable of being communicated with the auxiliary evaporation plate 2 at the farthest position, and the condensation plate 3 is prolonged to be capable of being communicated with the tail end of the auxiliary evaporation plate 2 at the farthest position.
The three-dimensional heat pipe radiator that this embodiment provided, working medium absorb the vaporization after the heat that the battery produced, main evaporating plate 1 and the inside pressure increase of vice evaporating plate 2, in working medium will evaporate to the less condensing plate 3 of pressure, then liquefy under the fin heat sink 4 effect of one side of condensing plate 3, in the working medium after the liquefaction gets back to the evaporating plate again through the imbibition core, so reciprocating cycle realizes the heat dissipation. Traditional power battery heat pipe independent setting, a plurality of different condensation ends have, the radiating effect is uneven, it is very big to have led to each battery cell difference in temperature, the evaporating plate of this embodiment is fishbone-shaped and distributes, pack into the battery after, each department evaporating end all communicates with the same condensation end on the evaporating plate, the radiating effect of same condensation end is the same, and the evaporating end of different vice evaporating plates is the same basically to the distance of condensation end, make the evaporating plate radiating effect of different positions unanimous, the heat dissipation that has guaranteed the battery is more even, mutual difference in temperature reduces between each battery cell.
In order to improve the temperature equalization effect, reduce the flow resistance at the corner and solve the problems of uneven heat transfer and untimely backflow caused by vortex airflow, the included angle between the auxiliary evaporation plate 2 and the main evaporation plate 1 is designed to be 50 degrees, the reference range is between 40 degrees and 80 degrees, and the flow resistance problem can be caused when the included angle is too large or too small.
In order to improve the capillary suction of the liquid absorption core in the evaporation plate, the liquid absorption core is made of foam copper, and the porosity of the foam copper is gradually reduced from the condensation plate to the tail end of the evaporation plate.
For improving fin heat sink 4 radiating rate, fin heat sink 4 of this embodiment is square post, the length of a side of square post is 5mm, highly be 10mm, square post and condensation plate 3 integrated into one piece, fin heat sink 4's surface area has been improved greatly, and then can discharge more heats in the same time, as shown in fig. 3, cross arrangement between the square post, be covered with condensation plate 3's surface, the interval is 5mm between the row from top to bottom, it is 5mm to control the row interval, condensation plate 3 is equipped with the fan in the upper end of the one side of being connected with fin heat sink 4, variable frequency fan is chooseed for use to the fan, can take away the heat on the square post fast.
The 3 surfaces of condensing panel of this embodiment are equipped with the hydrophobic layer, and this hydrophobic layer is obtained at alcohols or stearic acid through soaking the condensing panel, and condensing panel 3 can obtain super hydrophobic surface after handling, because the internal surface of condensing panel 3 has hydrophobic property, after working medium liquefaction in condensing panel 3, will leave the condensing panel fast, in the acceleration reflux extremely evaporating plate.
The three-dimensional heat pipe provided by the embodiment is matched with the power battery just, no gap exists between the three-dimensional heat pipe and the power battery, and in order to reduce air contact thermal resistance, the surface of the evaporation plate is provided with a silicone grease layer.
To sum up, the three-dimensional heat pipe that this application provided mainly includes that overall structure is the evaporating plate of fishbone shape structure, condensing plate and fin heat sink structure, the evaporating plate designs with the condensing plate is perpendicular, form airtight cavity, airtight cavity is taken out into vacuum state and is filled the working medium, the evaporation behind the heat that the working medium absorption battery produced, evaporate to condensing plate department, one side of condensing plate is equipped with fin heat sink and fan, can release the heat dissipation capacity with the working medium liquefaction, the working medium after the liquefaction gets back to again in the evaporating plate under the capillary action of gravity and foamy copper imbibition core. The utility model provides an evaporating plate is the fishbone shape and distributes, packs into the battery after, and every department evaporating end all communicates with the same condensation end on the evaporating plate, and the radiating effect of same condensation end is the same for the evaporating plate radiating effect of different positions is unanimous, has guaranteed that the heat dissipation of battery is more even, and mutual difference in temperature reduces between each battery cell, has improved the temperature uniformity when charging and discharging.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A three-dimensional heat pipe radiator applied to power battery heat dissipation is characterized by comprising an evaporation plate, a condensation plate and a fin heat sink;
the evaporation plate is vertically arranged on one side of the condensation plate, the fin is arranged on the other side of the condensation plate in a heat sink mode, the evaporation plate and the condensation plate are provided with inner cavities, the evaporation plate and the condensation plate are communicated to form a closed cavity, the closed cavity is vacuumized and filled with working media, a liquid absorption core is further arranged in the evaporation plate, and the liquid absorption core is communicated with the inner cavity of the condensation plate;
the evaporating plate comprises a main evaporating plate and a plurality of auxiliary evaporating plates, the main evaporating plate is arranged along the central line of the condensing plate, the auxiliary evaporating plates are uniformly arranged on two sides of the main evaporating plate and are parallel to each other on the same side, the main evaporating plate is communicated with the inner parts of the auxiliary evaporating plates, and the adjacent auxiliary evaporating plates, the main evaporating plate and the condensing plate form a battery storage cavity.
2. The three-dimensional heat pipe radiator applied to heat dissipation of power batteries as recited in claim 1, wherein the filling rate of the working medium is between 30% and 60% of the volume of the closed chamber.
3. The three-dimensional heat pipe radiator applied to heat dissipation of power batteries as recited in claim 1, wherein said auxiliary evaporation plates are distributed on two sides of said main evaporation plate in a staggered manner, so that said main evaporation plate and said auxiliary evaporation plates are in a fishbone structure.
4. The three-dimensional heat pipe radiator applied to heat dissipation of power batteries as recited in claim 3, wherein an included angle between the secondary evaporation plate and the primary evaporation plate is between 40 ° and 80 °.
5. The three-dimensional heat pipe radiator applied to heat dissipation of power batteries according to claim 1, wherein the wick is copper foam.
6. The three-dimensional heat pipe radiator applied to heat dissipation of power batteries is characterized in that the porosity of the foamy copper is gradually reduced from the condensation plate to the tail end of the evaporation plate.
7. The three-dimensional heat pipe radiator applied to heat dissipation of power batteries according to claim 1, wherein the surface of the condensation plate is provided with a hydrophobic layer.
8. The three-dimensional heat pipe radiator applied to heat dissipation of power batteries as recited in claim 1, wherein the surface of the evaporation plate is provided with a silicone layer.
9. The three-dimensional heat pipe radiator applied to heat dissipation of power batteries as recited in claim 1, wherein the fin heat sink is a square column, and the square columns are distributed on the condensation plate in a staggered manner.
10. The three-dimensional heat pipe radiator applied to heat dissipation of power batteries as recited in claim 9, wherein a fan is arranged at the upper end of the condensation plate on the side connected with the finned heat sink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921355002.7U CN210074101U (en) | 2019-08-20 | 2019-08-20 | Three-dimensional heat pipe radiator applied to heat dissipation of power battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921355002.7U CN210074101U (en) | 2019-08-20 | 2019-08-20 | Three-dimensional heat pipe radiator applied to heat dissipation of power battery |
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| CN210074101U true CN210074101U (en) | 2020-02-14 |
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| CN201921355002.7U Expired - Fee Related CN210074101U (en) | 2019-08-20 | 2019-08-20 | Three-dimensional heat pipe radiator applied to heat dissipation of power battery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110444833A (en) * | 2019-08-20 | 2019-11-12 | 广东工业大学 | A kind of three-dimensional heat-pipe radiator applied to power battery heat dissipation |
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- 2019-08-20 CN CN201921355002.7U patent/CN210074101U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110444833A (en) * | 2019-08-20 | 2019-11-12 | 广东工业大学 | A kind of three-dimensional heat-pipe radiator applied to power battery heat dissipation |
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Granted publication date: 20200214 Termination date: 20200820 |