CN213878214U - Capillary pumping type plate evaporator for battery heat dissipation - Google Patents
Capillary pumping type plate evaporator for battery heat dissipation Download PDFInfo
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- CN213878214U CN213878214U CN202121506065.5U CN202121506065U CN213878214U CN 213878214 U CN213878214 U CN 213878214U CN 202121506065 U CN202121506065 U CN 202121506065U CN 213878214 U CN213878214 U CN 213878214U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The embodiment of the utility model provides an apply to radiating capillary pumping formula plate evaporator of battery relates to battery thermal management technical field. This apply to radiating capillary pumping formula plate evaporator of battery includes the casing, the heating panel, the heat conduction post, the guide plate and the liquid storage tank that holds the coolant liquid, heating panel and casing enclose into the cavity jointly, the guide plate sets up in the cavity, first passageway and second passageway are separated into with the cavity to the guide plate, the both ends of guide plate form first clearance and second clearance with the inner wall of casing respectively, first passageway, the second passageway, first clearance and second clearance form circulation channel jointly, the heat conduction post is provided with a plurality ofly, liquid storage tank and a plurality of heat conduction post all set up in the cavity and are located the heating panel, a plurality of heat conduction posts are located one side of liquid storage tank, coolant liquid overflow in the liquid storage tank is between a plurality of heat conduction posts, it is high to have cooling efficiency, simple structure and easily integrated advantage.
Description
Technical Field
The utility model relates to a battery thermal management technical field particularly, relates to an apply to radiating capillary pumping formula plate evaporator of battery.
Background
Along with the continuous development and popularization of new energy electric vehicles, the safety problem of lithium ion power batteries is gradually highlighted, especially, thermal runaway becomes a main problem, the hot environment and a large amount of heat generated in the battery power supply process lead to high temperature of the batteries, chemical balance in the batteries can be further destroyed, side reaction is caused, battery combustion is caused, even explosion is caused, and huge loss is brought.
Typical methods for dissipating heat of existing batteries include: 1. the air cooling method has simple structure and low cooling efficiency; 2. liquid cooling or refrigerant-based cooling methods have high thermal efficiency, but the assembly structure is complex and requires additional energy; 3. the heat pipe heat transfer method has the advantages of good effect, low cost and high heat conductivity coefficient, but has certain limitation because the heat pipe system is difficult to integrate. Therefore, designing a cooling device with high cooling efficiency, simple structure, easy integration and low cost is one of the great challenges for optimizing the overall performance of the thermal management system of the electric vehicle.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an apply to radiating capillary pumping formula plate evaporator of battery, it has cooling efficiency height, simple structure, easily integrated and advantage with low costs for example.
The embodiment of the utility model discloses a can realize like this:
the embodiment of the utility model provides a capillary pumping type plate evaporator applied to battery heat dissipation, which comprises a shell, a heat dissipation plate, a heat conduction column, a flow guide plate and a liquid storage tank filled with cooling liquid;
the heat dissipation plate and the shell together enclose a closed cavity;
the guide plate is arranged in the cavity, the guide plate divides the cavity into a first channel and a second channel, and two ends of the guide plate respectively form a first gap and a second gap with the inner wall of the shell;
the first channel, the second channel, the first gap and the second gap together form a circulating channel;
the heat conduction columns are arranged in a plurality of numbers, and the liquid storage tank and the heat conduction columns are arranged in the cavity and are positioned on the heat dissipation plate.
Optionally, the surface that the heating panel was kept away from to the guide plate is the inclined plane, just the slope least significant end of inclined plane is close to the liquid storage tank, the inclined plane with form between the casing the second passageway.
Optionally, one end of the guide plate is provided with a transition surface, the transition surface and the inner wall of the shell form the first gap, and the transition surface is an arc surface.
Optionally, the second gap is located above the reservoir.
Optionally, the shell comprises a condensation plate, a top plate, a partition plate and a side plate;
the top plate and the heat dissipation plate are arranged oppositely, the first channel is formed between the heat dissipation plate and the flow guide plate, and the second channel is formed between the top plate and the flow guide plate;
the condensation plate and the baffle are arranged oppositely, the second gap is formed between the condensation plate and the flow guide plate, and the first gap is formed between the baffle and the flow guide plate;
the number of the side plates is two, and the two side plates are arranged oppositely;
the condensation plate, the top plate, the partition plate, the side plate and the heat dissipation plate are enclosed to form the closed cavity.
Optionally, one end of the top plate abuts against the partition plate, and the other end of the top plate is in arc transition and abuts against the side wall of the condensation plate close to the top end.
Optionally, the partition is a foam partition.
Optionally, a plurality of fins are arranged on one side of the condensation plate away from the partition plate.
Optionally, the length direction of the fins is consistent with the length direction of the condensation plate, and the fins are arranged in parallel and uniformly at intervals.
Optionally, a plurality of the heat conduction columns are uniformly arranged at intervals.
The utility model discloses apply to radiating capillary pumping formula plate evaporator's of battery beneficial effect includes, for example: attaching a heat dissipation plate of the plate evaporator to the surface of the battery, and forming a liquid film between the heat conducting columns by the cooling liquid in the liquid storage tank; when the battery heats, the heating area is enlarged by the plurality of heat conduction columns, the cooling liquid flows through the heat conduction columns to generate turbulent flow, the phase change heat transfer performance is enhanced, meanwhile, due to the capillary pumping effect among the heat conduction columns, the spontaneous flow of the cooling liquid is pushed to delay the evaporation process of the liquid film, and the film evaporation is utilized to perform full heat exchange with the battery; the generated steam enters the second channel through the first channel and the first gap, and then is condensed and reflowed to the liquid storage tank through the second gap, so that a circulating channel is formed in the cavity; the evaporator utilizes the capillary pumping effect and the huge latent heat generated by the thin film evaporation during the vapor-liquid phase change to realize the rapid cooling of the battery, and has the advantages of high heat transfer efficiency, no need of extra energy consumption, simple structure and easy integration.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a sectional view showing an internal structure of an evaporator according to an embodiment of the present application;
FIG. 2 is a schematic view showing an array of microcolumns in an embodiment of the present application;
FIG. 3 is a schematic diagram showing the spacing between the microcolumn columns in the example of the present application;
fig. 4 is a schematic structural diagram for showing the butt joint of two evaporators in the embodiment of the present application.
Icon: 100-a housing; 110-a cold plate; 111-fins; 120-a top plate; 130-a separator; 200-a heat sink; 210-a thermally conductive post; 220-a liquid storage tank; 300-a cavity; 310-a first channel; 320-a second channel; 330 — a first gap; 340-a second gap; 400-a baffle; 410-inclined plane; 420-transition surface.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Some of the nouns referred to in this application are explained first:
capillary pumping effect: the liquid-vapor meniscus interface among the multiple heat-conducting columns generates capillary force, so that the liquid is pushed to flow spontaneously in the liquid evaporation process, and the delay of the liquid film evaporation process is facilitated.
Film evaporation: evaporation of the liquid forming a film.
Referring to fig. 1, the present embodiment provides a capillary pumping plate evaporator for battery heat dissipation, which includes a housing 100, a heat dissipation plate 200, a heat conduction column 210, a flow guide plate 400, and a liquid storage tank 220 containing a cooling liquid, wherein the heat dissipation plate 200 and the housing 100 together enclose a sealed cavity 300; the guide plate 400 is arranged in the cavity 300, the guide plate 400 divides the cavity 300 into a first channel 310 and a second channel 320, two ends of the guide plate 400 respectively form a first gap 330 and a second gap 340 with the inner wall of the shell 100, and the first channel 310, the second channel 320, the first gap 330 and the second gap 340 together form a circulating channel; the heat conduction post 210 is provided with a plurality ofly, and the liquid storage tank 220 and a plurality of heat conduction post 210 all set up in cavity 300 and are located heating panel 200, and a plurality of heat conduction posts 210 are located one side of liquid storage tank 220, and the coolant liquid in the liquid storage tank 220 overflows to between a plurality of heat conduction posts 210, and a plurality of heat conduction posts 210 are even interval setting.
Referring to fig. 2 and 3, an array in which the plurality of heat conductive pillars 210 are uniformly spaced on the heat sink 200 may also be referred to as a micro-pillar array. Optionally, the diameter of the cross section of the microcolumn is 10-100 μm, and the gap between adjacent microcolumns is 10-100 μm. In addition, the micro-column is made of heat-conductive material, and can be silicon-based semiconductor material, copper-based alloy or aluminum-based composite material.
When the heat dissipation plate 200 is heated, due to the capillary pumping effect among the columns in the micro-column array, the liquid is pushed to flow towards one side far away from the liquid storage tank 220, the evaporation process of the liquid film is delayed, and the heat exchange is fully carried out with the battery at the lower part; due to the huge latent heat generated by the film evaporation during the vapour-liquid phase change, the rapid cooling of the battery is realized. In fig. 1, the arrows indicate the flow direction of the steam, and the steam is condensed and flows back to the liquid storage tank 220 through a circulation channel formed by the first channel 310, the second channel 320, the first gap 330 and the second gap 340, so as to form a reciprocating circulation in the cavity 300, thereby improving the heat dissipation efficiency.
Further, the surface of the guiding plate 400 away from the heat dissipating plate 200 is an inclined surface 410, the lowest inclined end of the inclined surface 410 is close to the liquid storage tank 220, and the second channel 320 is formed between the inclined surface 410 and the housing 100; one end of the guide plate 400 is provided with a transition surface 420, the transition surface 420 and the inner wall of the housing 100 form a first gap 330, and the transition surface 420 is an arc surface; the second gap 340 is located above the reservoir 220.
The steam that the coolant liquid produced from cooling plate 200 passes through first clearance 330 and enters into second passageway 320, and the liquid drop that the partial steam condensation in the second passageway 320 formed falls on the inclined plane 410 of guide plate 400, enters into liquid storage tank 220 and recycles after passing through second clearance 340 along the slope lower extreme of inclined plane 410, forms reciprocating cycle in cavity 300, has promoted the radiating efficiency.
Further, with continued reference to fig. 1, the housing 100 includes a condensation plate 110, a top plate 120, a partition 130, and side plates (not shown); the top plate 120 and the heat dissipation plate 200 are disposed at upper and lower sides and are disposed opposite to each other, the first channel 310 is formed between the heat dissipation plate 200 and the flow guide plate 400, and the second channel 320 is formed between the top plate 120 and the flow guide plate 400; the condensation plate 110 and the partition plate 130 are disposed at the left and right sides and are disposed opposite to each other, the second gap 340 is formed between the condensation plate 110 and the baffle 400, and the first gap 330 is formed between the partition plate 130 and the baffle 400; the two side plates are arranged in a front-back opposite mode; the condensation plate 110, the top plate 120, the partition 130, the side plates, and the heat dissipation plate 200 enclose a closed cavity 300. The evaporator is simple in overall structure and easy to integrate.
In this embodiment, the heat dissipation plate 200, the condensation plate 110, the top plate 120, the partition plate 130 and the side plates form a rectangular closed cavity 300, and the heat dissipation plate 200, the condensation plate 110, the top plate 120, the partition plate 130 and the side plates are welded together, so that the sealing performance is better; in other embodiments, the heat dissipation plate 200, the condensation plate 110, the top plate 120, the partition 130, and the side plates may be connected by bolts.
Further, one end of the top plate 120 abuts against the partition 130, and the other end of the top plate 120 is in arc transition and abuts against the side wall of the condensation plate 110 near the top end.
Through set up the circular arc transition in the one end of roof 120, reduced the area of contact between the terminal surface of roof 120 and the face of condensing plate 110 to when steam flows on condensing plate 110, can increase the area of contact of steam and condensing plate 110, improve the radiating efficiency.
In addition, the side of the condensation plate 110 away from the partition 130 is provided with a plurality of fins 111; the length direction of the fins 111 is the same as the length direction of the condensation plate 110, and the plurality of fins 111 are arranged in parallel and at uniform intervals.
It should be noted that the array in which the plurality of fins 111 are arranged in parallel and at uniform intervals may also be referred to as a fin array; when the evaporator is applied to a vehicle, the length direction of the fins 111 is arranged in parallel with the traveling direction of the vehicle, the heat is transferred to the external environment by using wind generated by incoming flow, when high-temperature steam flows to one side of the condensing plate 110, the heat is transferred to the fins 111, the temperature of the surfaces of the fins 111 is quickly reduced under the action of the incoming flow of the vehicle, the heat exchange with the internal steam is strengthened, condensed liquid drops nucleate and fall off under the action of gravity, and then the liquid drops enter the liquid storage tank 220 through the second gap 340; the arrangement of the fin array further improves the heat dissipation efficiency.
Optionally, referring to fig. 4, two plate evaporators are arranged in mirror symmetry, two partition plates 130 are attached to each other, and two heat dissipation plates 200 are butted to further increase the heat dissipation area; the partition 130 is configured as a foam partition 130 to separate the capillary pumping process on both sides and prevent steam interference on both sides.
According to the capillary pumping type plate evaporator for battery heat dissipation provided by the embodiment, the working principle of the plate evaporator is as follows:
when the heat dissipation plate 200 is heated, a capillary pumping effect is generated among the columns in the micro-column array, cooling liquid is rapidly evaporated in the columns, and latent heat of the liquid can absorb a large amount of heat of the battery; steam generated in the first channel 310 enters the second channel 320 through the first gap 330, part of the steam is condensed into liquid and drops on the guide plate 400, the liquid flows back into the liquid storage tank 220 through the inclined surface 410 of the guide plate 400, and the other part of the steam flows onto the condensing plate 110, so that in the advancing process of an automobile, the temperature of the surface of the fin 111 is rapidly reduced under the action of inflow air of the automobile, the heat exchange with the internal steam is enhanced, the condensed liquid drops nucleate and fall off under the action of gravity and flow back into the liquid storage tank 220, reciprocating circulation is formed in the circulation channel of the cavity 300, and the heat dissipation efficiency is greatly improved.
The capillary pumping plate evaporator applied to battery heat dissipation provided by the embodiment at least has the following advantages:
1) based on the capillary pumping effect among the columns in the micro-column array, a pump is not needed to convey cooling liquid, the cooling liquid is rapidly evaporated among the columns, and the latent heat of the liquid can absorb a large amount of heat of the battery; the liquid is pushed to flow spontaneously in the evaporation process, so that the liquid film evaporation process is delayed, and the heat dissipation efficiency is greatly improved;
2) a circulating channel is formed by the first channel 310, the second channel 320, the first gap 330 and the second gap 340 together, so that cooling liquid is recycled, and the heat dissipation efficiency is improved;
3) the fin array is arranged on the side wall of the condensing plate 110, so that the temperature of the surface of the fin 111 is quickly reduced under the action of incoming air of an automobile, and the heat exchange with internal steam is enhanced; and no additional fan is needed for heat dissipation, and the heat dissipation effect is in direct proportion to the vehicle speed.
4) The whole structure is simple and easy to integrate.
To sum up, the embodiment of the utility model provides an apply to radiating capillary pumping formula plate evaporator of battery utilizes the capillary pumping effect of post and the principle of liquid film evaporation in the little post array, absorbs the heat of battery in a large number to utilize circulation channel to realize the cyclic utilization of coolant liquid, in addition, through set up the fin array on condensation plate 110, further promoted the radiating efficiency.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A capillary pumping type plate evaporator applied to battery heat dissipation is characterized by comprising a shell, a heat dissipation plate, a heat conduction column, a flow guide plate and a liquid storage tank filled with cooling liquid;
the heat dissipation plate and the shell together enclose a closed cavity;
the guide plate is arranged in the cavity, the guide plate divides the cavity into a first channel and a second channel, and two ends of the guide plate respectively form a first gap and a second gap with the inner wall of the shell;
the first channel, the second channel, the first gap and the second gap together form a circulating channel;
the heat conduction columns are arranged in a plurality of numbers, and the liquid storage tank and the heat conduction columns are arranged in the cavity and are positioned on the heat dissipation plate.
2. The capillary-pumped plate evaporator for dissipating heat from a battery as recited in claim 1, wherein the surface of the baffle plate away from the heat dissipating plate is an inclined surface, and the lowest inclined end of the inclined surface is close to the liquid storage tank, and the second channel is formed between the inclined surface and the housing.
3. The capillary pumping plate evaporator for dissipating heat from batteries according to claim 1, wherein a transition surface is disposed at one end of the flow guide plate, the transition surface and the inner wall of the housing form the first gap, and the transition surface is an arc surface.
4. The capillary-pumped plate evaporator for dissipating heat from a battery as recited in claim 1, wherein said second gap is located above said reservoir.
5. The capillary-pumped plate evaporator for battery heat rejection as recited in claim 1 wherein said housing includes a cold plate, a top plate, a partition plate and side plates;
the top plate and the heat dissipation plate are arranged oppositely, the first channel is formed between the heat dissipation plate and the flow guide plate, and the second channel is formed between the top plate and the flow guide plate;
the condensation plate and the baffle are arranged oppositely, the second gap is formed between the condensation plate and the flow guide plate, and the first gap is formed between the baffle and the flow guide plate;
the number of the side plates is two, and the two side plates are arranged oppositely;
the condensation plate, the top plate, the partition plate, the side plate and the heat dissipation plate are enclosed to form the closed cavity.
6. The capillary-pumped plate evaporator for dissipating heat from a battery as recited in claim 5, wherein one end of said top plate abuts against said partition plate, and the other end of said top plate is rounded and abuts against the side wall of said condensation plate near the top end.
7. The capillary-pumped plate evaporator for dissipating heat from a battery as recited in claim 5 wherein said separator is a foam separator.
8. The capillary-pumped plate evaporator for dissipating heat from a battery of claim 5 wherein the side of the cold plate remote from the separator plate is provided with a plurality of fins.
9. The capillary-pumped plate evaporator for dissipating heat from batteries of claim 8, wherein the length direction of the fins is the same as the length direction of the condensation plate, and the fins are arranged in parallel and at regular intervals.
10. The capillary-pumped plate evaporator for dissipating heat from a battery as recited in claim 1, wherein the plurality of heat-conducting columns are evenly spaced.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121506065.5U CN213878214U (en) | 2021-07-05 | 2021-07-05 | Capillary pumping type plate evaporator for battery heat dissipation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121506065.5U CN213878214U (en) | 2021-07-05 | 2021-07-05 | Capillary pumping type plate evaporator for battery heat dissipation |
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| CN213878214U true CN213878214U (en) | 2021-08-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115189070A (en) * | 2022-08-24 | 2022-10-14 | 四川新能源汽车创新中心有限公司 | Flat heat pipe applied to heat dissipation of power battery |
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2021
- 2021-07-05 CN CN202121506065.5U patent/CN213878214U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115189070A (en) * | 2022-08-24 | 2022-10-14 | 四川新能源汽车创新中心有限公司 | Flat heat pipe applied to heat dissipation of power battery |
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