CN223108987U - Liquid cooling plate and power battery thermal management system - Google Patents
Liquid cooling plate and power battery thermal management systemInfo
- Publication number
- CN223108987U CN223108987U CN202422183614.XU CN202422183614U CN223108987U CN 223108987 U CN223108987 U CN 223108987U CN 202422183614 U CN202422183614 U CN 202422183614U CN 223108987 U CN223108987 U CN 223108987U
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- liquid
- cooling plate
- cooling
- fins
- side wall
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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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- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The utility model provides a liquid cooling plate and a power battery thermal management system, which relate to the technical field of cooling equipment, wherein the liquid cooling plate comprises a cooling plate body, the cooling plate body comprises a liquid inlet, a liquid outlet and a liquid channel, the liquid inlet, the liquid channel and the liquid outlet are sequentially communicated, the cooling plate body is provided with two parallel plate surfaces for enclosing the liquid channel, a first side wall and a second side wall which are arranged between the two plate surfaces and are opposite, the arrangement direction of the first side wall and the second side wall is consistent with the liquid flow trend of the liquid channel, the liquid inlet is positioned on the first side wall, the liquid outlet is positioned on the second side wall, a plurality of cooling fins are arranged in the liquid channel, the cooling fins are distributed in a plurality of rows and a plurality of columns along the length-width direction of the liquid channel in a plane parallel to the plate surfaces, and the cooling fins are in the shape of axisymmetric blades. The liquid cooling plate provided by the utility model has higher heat dissipation efficiency and good heat dissipation uniformity.
Description
Technical Field
The utility model relates to the technical field of cooling equipment, in particular to a liquid cooling plate and a power battery thermal management system.
Background
The main objective of the power battery thermal management system is to maintain the proper operating temperature of the power battery of the new energy vehicle and at the same time to make the temperature between the battery cells more prone to average. Typically, battery thermal management systems primarily include an internal battery thermal management system and an external battery thermal management system. The external battery thermal management system mainly utilizes means such as convection to take away heat, and can be divided into air cooling, liquid cooling, phase change cooling, heat pipe cooling and the like according to different cooling media. Among these, liquid cooling is an effective battery thermal management strategy, primarily by contacting a coolant (e.g., water, glycol, or refrigerant, etc.) directly or indirectly to the battery or battery pack to absorb and carry away the heat generated by the battery. Liquid cooling can be further classified into direct contact cooling and indirect contact cooling according to the manner in which the cooling medium contacts the battery. In direct contact cooling, the coolant directly contacts the surface of the battery and takes away the heat generated by the battery, and commonly used coolants include water, glycol, some special coolants and the like. When the liquid cooling plate is used for cooling the battery, the cooling efficiency mainly depends on the structural design of the liquid cooling channels in the liquid cooling plate under the condition that the cooling condition is determined. Along with the continuous improvement of the energy density of the lithium ion battery, higher requirements are also put forward on the heat dissipation efficiency of the liquid cooling plate, so how to further improve the heat dissipation efficiency of the liquid cooling plate becomes a technical problem to be solved currently.
Disclosure of utility model
The utility model solves the problem of how to further improve the heat dissipation efficiency of the liquid cooling plate.
In order to solve the problems, the utility model provides a liquid cooling plate, which comprises a cooling plate body, wherein the cooling plate body comprises a liquid inlet, a liquid outlet and a liquid channel, the liquid inlet, the liquid channel and the liquid outlet are sequentially communicated, the cooling plate body is provided with two parallel plate surfaces for enclosing the liquid channel, a first side wall and a second side wall which are arranged between the two plate surfaces and are opposite to each other, the arrangement direction of the first side wall and the second side wall is consistent with the liquid flow trend of the liquid channel, the liquid inlet is positioned on the first side wall, the liquid outlet is positioned on the second side wall, the liquid channel is a cuboid, a plurality of cooling fins are arranged in the liquid channel, the cooling fins are distributed in a plurality of rows and a plurality of columns along the length-width direction of the liquid channel in a plane parallel to the plate surfaces, and the cooling fins are in the shape of axisymmetric blades.
Optionally, the cooling fins are parallel to the plate surfaces, and the thickness of the cooling fins is the same as the distance between the two plate surfaces.
Optionally, the row spacing of the fins is tapered along the flow direction of the liquid channel.
Optionally, a plurality of the cooling fins are distributed in an array of a plurality of rows and a plurality of columns along the length-width direction of the liquid channel.
Optionally, the number of the cooling fins is 40, and 40 cooling fins are distributed in an array of 8 rows and 5 columns.
Optionally, the heat sink has a long axis and a short axis perpendicular to each other, the heat sink is symmetrical about the long axis, the long axis has a length a, the short axis has a length b, the short axis divides the heat sink into an upper half and a lower half, the upper half has a span of 0.25a along the long axis direction, the lower half has a span of 0.75a along the long axis direction, the long axis divides the upper half into an upper left half and an upper right half, the long axis divides the lower half into a lower left half and a lower right half, the upper left half and the upper right half are both circular arcs and the distance between the center and the short axis is c, the ratio of c to b is 1:6, the lower left half and the lower right half are both circular arcs and the distance between the center and the short axis is d, and the ratio of d to b is 1:3.
Optionally, the symmetry axis of the fin coincides with the flow direction of the liquid channel.
Optionally, the number of the liquid inlets and the number of the liquid outlets are two.
Optionally, the two liquid inlets and the two liquid outlets form two liquid inlet-outlet pairs, and one liquid inlet and one liquid outlet in each liquid inlet-outlet pair are aligned.
The utility model also provides a power battery thermal management system comprising the liquid cooling plate.
Compared with the prior art, the liquid cooling plate provided by the utility model has the advantages that the plurality of radiating fins distributed in the length-width direction of the liquid channel in a plurality of rows and columns are arranged in the liquid channel, so that the contact area between a cooling medium and the radiating fins can be increased, the radiating fins are fully utilized for heat exchange, and the radiating efficiency of the liquid cooling plate is improved. Because the fin is the narrow middle wide blade shape in both ends, and is axisymmetric shape, and then, the effect of reposition of redundant personnel can be played at the both ends of fin, and the both sides arc edge of fin can play the effect of water conservancy diversion, and forms the water conservancy diversion passageway between two adjacent fins, is favorable to further improving the heat exchange efficiency of liquid cooling plate. In addition, the cooling fins distributed in a plurality of rows and a plurality of columns also enable the flow path of the cooling medium to be more reasonable, enhance the heat exchange effect and be beneficial to improving the heat dissipation efficiency of the liquid cooling plate. In addition, the radiating fins distributed in a plurality of rows and columns are more beneficial to realizing uniform heat dissipation. In conclusion, the liquid cooling plate provided by the utility model has higher heat dissipation efficiency and good heat dissipation uniformity.
Drawings
FIG. 1 is a schematic view of a liquid cooling plate according to an embodiment of the present utility model;
FIG. 2 is a second schematic diagram of a liquid cooling plate according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of a heat sink according to an embodiment of the utility model;
FIG. 4 is a schematic view showing the structure of a liquid cooling plate in comparative example 1;
FIG. 5 is a schematic view showing the structure of a liquid cooling plate in comparative example 2.
Reference numerals illustrate:
1. The cooling plate comprises a cooling plate body, 11, a liquid inlet, 12, a liquid outlet, 13, a liquid channel, 14, a first side wall, 15, a second side wall, 2, cooling fins, 21, a long shaft, 22, a short shaft, 23, an upper left half, 24, an upper right half, 25, a lower left half, 26, a lower right half, 3 and cooling fins.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. While the utility model is susceptible of embodiment in the drawings, it is to be understood that the utility model may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided to provide a more thorough and complete understanding of the utility model. It should be understood that the drawings and embodiments of the utility model are for illustration purposes only and are not intended to limit the scope of the present utility model.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application;
The term "comprising" and variations thereof as used herein is meant to be open-ended, i.e., "including but not limited to," based at least in part on, "one embodiment" means "at least one embodiment," another embodiment "means" at least one additional embodiment, "some embodiments" means "at least some embodiments," and "optional" means "optional embodiment. Related definitions of other terms will be given in the description below. It should be noted that the terms "first," "second," and the like herein are used for distinguishing between different objects and not for describing a particular sequential or chronological order. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more. It should be noted that the direction of the x arrow in fig. 1-2 and fig. 4-5 indicates the flow direction of the liquid channel. It should be noted that fig. 1-5 are all cross-sectional views in the present utility model.
Along with the continuous improvement of the energy density of the lithium ion battery, higher requirements are also put forward on the heat dissipation efficiency of the liquid cooling plate, so how to further improve the heat dissipation efficiency of the liquid cooling plate becomes a technical problem to be solved currently. The shape and the vein design of the blade are naturally selected, so that the blade has high-efficiency heat exchange capacity. The blade-shaped cooling fin can realize efficient heat conduction and heat dissipation by simulating the shape and the venation structure of the blades in the natural world.
In view of the foregoing, as shown in fig. 1 and 2, an embodiment of the present utility model provides a liquid cooling plate, including a cooling plate body 1, where the cooling plate body 1 includes a liquid inlet 11, a liquid outlet 12, and a liquid channel 13, where the liquid inlet 11, the liquid channel 13, and the liquid outlet 12 are sequentially connected, the cooling plate body 1 has two parallel plate surfaces for enclosing the liquid channel 13, and a first side wall 14 and a second side wall 15 disposed between the two plate surfaces and opposite to each other, the arrangement direction of the first side wall 14 and the second side wall 15 is consistent with the flow direction of the liquid channel 13, the liquid inlet 11 is located on the first side wall 14, the liquid outlet 12 is located on the second side wall 15, the liquid channel 13 is a cuboid, a plurality of heat dissipation fins 2 are disposed in the liquid channel 13, the plurality of heat dissipation fins 2 are distributed in multiple rows and multiple columns along the length-width direction of the liquid channel 13 in a plane parallel to the plate surfaces, and the heat dissipation fins 2 are in axisymmetric fin shapes.
When the battery pack cooling device is used, the liquid cooling plate is arranged in the battery box to be in contact with the battery pack to be cooled, then liquid cooling medium is introduced into the liquid inlet 11 of the liquid cooling plate, so that the liquid cooling medium flows along the liquid channel 13 and finally flows out through the liquid outlet 12, and the liquid cooling medium exchanges heat with the battery pack through the side wall of the liquid cooling plate and the cooling fins 2, so that the heat dissipation of the battery pack is realized.
The arrangement direction of the first side wall 14 and the second side wall 15 is consistent with the flow direction of the liquid channel 13, that is, the liquid flow is unidirectional along the first side wall 14 toward the second side wall 15, or the liquid channel 13 of the entire cooling plate body 1 is a unidirectional flow channel.
According to the liquid cooling plate provided by the embodiment of the utility model, the plurality of radiating fins 2 distributed in the length-width direction of the liquid channel in a plurality of rows and columns are arranged in the liquid channel 13, so that the contact area between a cooling medium and the radiating fins 2 can be increased, the radiating fins 2 are fully utilized for heat exchange, and the radiating efficiency of the liquid cooling plate is improved. Because fin 2 is the narrow middle wide blade shape in both ends, and for axisymmetric shape, and then, the effect of reposition of redundant personnel can be played at the both ends of fin 2, and the both sides arc edge of fin 2 can play the effect of water conservancy diversion, and form the water conservancy diversion passageway between two adjacent fin 2, be favorable to further improving the heat exchange efficiency of liquid cooling plate in addition, be the fin 2 that multirow and multirow distribute, also make the flow path of coolant more reasonable, strengthened the heat exchange effect, be favorable to improving the radiating efficiency of liquid cooling plate. In addition, the heat dissipation fins 2 distributed in a plurality of rows and columns are more beneficial to realizing uniform heat dissipation. In summary, the liquid cooling plate provided by the embodiment of the utility model has higher heat dissipation efficiency and good heat dissipation uniformity.
In some embodiments of the present utility model, the heat sink 2 is parallel to the plate surfaces, and the thickness of the heat sink 2 is the same as the distance between the two plate surfaces. That is, the two side surfaces of the heat sink 2 are respectively bonded to the two plate surfaces, so that the edge profile of the heat sink 2 can play a role of guiding flow in the liquid channel 13.
In some embodiments of the present utility model, the row spacing of the fins 2 decreases in the flow direction of the liquid channel 13, that is, the row spacing between two adjacent rows of the fins 2 decreases in the flow direction of the liquid channel 13.
In some embodiments of the present utility model, the plurality of heat dissipating fins 2 are distributed in an array of a plurality of rows and a plurality of columns along the length-width direction of the liquid channel 13. The number of fins is 40, and 40 fins 2 are distributed in an array of 8 rows and 5 columns. As shown in fig. 3, in some embodiments of the present utility model, it is preferable that the heat sink 2 has a long axis 21 and a short axis 22 perpendicular to each other, the heat sink 2 is symmetrical with respect to the long axis 21, the long axis 21 has a length a, the short axis 22 has a length b, the short axis 22 divides the heat sink into an upper half and a lower half, the upper half has a span of 0.25a in the long axis direction, the lower half has a span of 0.75a in the long axis direction, the long axis 21 divides the upper half into an upper left half 23 and an upper right half 24, the long axis 21 divides the lower half into a lower left half 25 and a lower right half 26, the upper left half 23 and the upper right half 24 are both circular arcs and the distance between the center and the short axis is 1:6, the lower left half 25 and the lower right half 26 are both circular arcs and the distance between the center and the short axis is 1:6, and the distance between the center and the center is 1:3. Through finite element simulation analysis, the heat dissipation effect of the liquid cooling plate of the embodiment is better.
In some embodiments of the present utility model, the liquid channel 13 is a cuboid, the liquid channel 13 has a length of 130mm and a width of 58mm, the liquid inlet 11 and the liquid outlet 12 have a width of 5mm, the number of the fins 2 is 40, 40 fins 2 form a first array, each row of the first array comprises 5 fins 2, each column comprises 8 fins 2, the row spacing of the first array is 15.63mm and the column spacing is 10.60mm, and the cooling plate body 1 has a length of 154mm, a width of 79mm and a height of 3mm. Simulation experiments show that in the example, when a is 12mm and b is 8mm, the heat dissipation effect of the liquid cooling plate is better for the heat dissipation plate.
In some embodiments of the present utility model, as shown in fig. 3, the symmetry axis of the heat sink 2 is consistent with the flow direction of the liquid channel 13. When the symmetry axis of the cooling fin 2 is consistent with the flow direction of the liquid channel 13, the flow guiding effect is facilitated, and the heat exchange efficiency of the liquid cooling plate is further improved.
As shown in fig. 2, the number of the liquid inlets 11 and the number of the liquid outlets 12 are two. The two liquid inlets 11 and the two liquid outlets 12 form two liquid inlet-outlet pairs, and one liquid inlet 11 and one liquid outlet 12 in each liquid inlet-outlet pair are aligned. The liquid cooling plate having two liquid inlets 11 and two liquid outlets 12 has a better heat radiation effect than the liquid cooling plate having one liquid inlet 11 and one liquid outlet 12.
In some embodiments of the present utility model, the liquid channel 13 is a cuboid, and the plurality of heat dissipating fins 2 are arranged in a plurality of rows and a plurality of columns along the length-width direction of the liquid channel 13. The liquid channels 13 are arranged in a plurality of rows and columns along the length-width direction, which is more beneficial to improving the heat dissipation uniformity and heat dissipation efficiency of the liquid cooling plate.
The embodiment of the utility model also provides a power battery thermal management system which comprises the liquid cooling plate.
Example 1
As shown in fig. 1, a liquid cooling plate comprises a cooling plate body 1, the cooling plate body 1 comprises a liquid inlet 11, a liquid outlet 12 and a liquid channel 13, the liquid inlet 11, the liquid channel 13 and the liquid outlet 12 are sequentially communicated, the cooling plate body 1 is provided with two parallel plate surfaces for enclosing the liquid channel 13 and a first side wall 14 and a second side wall 15 which are arranged between the two plate surfaces and are opposite, the arrangement direction of the first side wall 14 and the second side wall 15 is consistent with the liquid flow direction of the liquid channel 13, the liquid inlet 11 is positioned on the first side wall 14, the liquid outlet 12 is positioned on the second side wall 15, a plurality of cooling fins 2 are arranged in an array in a plane parallel to the plate surfaces, the liquid channel 13 is a cuboid, the cooling fins 2 are arranged in 8 rows and 5 rows along the length-width direction of the liquid channel 13, the cooling fins 2 are axisymmetric blade shapes, and the length direction of the cooling fins 2 is consistent with the liquid flow direction of the liquid channel 13.
Comparative example 1
As shown in fig. 4, the difference from embodiment 1 is that the heat sink 2 in the liquid channel 13 of the liquid cooling plate is replaced by 5 heat sink fins 3, the 5 heat sink fins 3 are arranged at intervals along the width direction of the liquid channel, the length direction of the heat sink fins 3 is consistent with the flow direction of the liquid channel 13, and the length of the heat sink fins 3 is slightly smaller than the length of the liquid channel 13.
Comparative example 2
As shown in fig. 5, the difference from embodiment 1 is that the heat sink 2 is not provided in the liquid passage 13 of the liquid cooling plate.
Experimental example
The liquid cooling plates prepared in example 1 and comparative examples 1-2 were used to radiate heat from the battery packs, and the average temperature, the highest temperature, and the lowest temperature of the battery packs were measured, and the results are shown in table 1. As can be seen from table 1, the average temperature of the battery pack was lower in example 1 and the temperature difference of the battery pack was smaller than comparative examples 1-2, indicating that the heat dissipation efficiency and heat dissipation uniformity of the liquid cooling plate in example 1 were both better.
TABLE 1
Although the utility model is disclosed above, the scope of the utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the scope of the utility model.
Claims (10)
1. The utility model provides a liquid cooling plate, its characterized in that, includes cooling plate body (1), cooling plate body (1) include liquid import (11), liquid export (12) and liquid passageway (13), liquid import (11) liquid passageway (13) liquid export (12) communicate in proper order, cooling plate body (1) have be used for enclosing into two parallel faces of liquid passageway (13) and lie in between two faces and first lateral wall (14) and second lateral wall (15) that set up relatively, first lateral wall (14) with the range direction of second lateral wall (15) is unanimous with the liquid flow trend of liquid passageway (13), liquid import (11) are located on first lateral wall (14), liquid export (12) are located on second lateral wall (15), liquid passageway (13) are the cuboid, be equipped with a plurality of fin (2) in with the plane of face parallel is followed liquid passageway's wide range of orientation and fin (2) are the multiseriate shape of heat dissipation.
2. The liquid cooling plate according to claim 1, characterized in that the cooling fins (2) are parallel to the plate surfaces, the thickness of the cooling fins (2) being the same as the distance between two plate surfaces.
3. A liquid cooling plate according to claim 1, characterized in that the row spacing of the cooling fins (2) is in a decreasing trend along the flow direction of the liquid channel (13).
4. A liquid cooling plate according to claim 1, wherein a plurality of the heat radiating fins (2) are distributed in an array of a plurality of rows and a plurality of columns in the length-width direction of the liquid passage (13).
5. The liquid cooling plate according to claim 4, characterized in that the number of cooling fins (2) is 40, 40 cooling fins (2) being distributed in an array of 8 rows and 5 columns.
6. The liquid cooling plate according to claim 1, characterized in that the heat sink (2) has a long axis (21) and a short axis (22) perpendicular to each other, the heat sink (2) being symmetrical about the long axis (21), the long axis (21) being of length a, the short axis (22) being of length b, the short axis (22) dividing the heat sink (2) into an upper half and a lower half, the upper half having a span of 0.25a in the long axis direction, the lower half having a span of 0.75a in the long axis direction, the long axis (21) dividing the upper half into an upper left half (23) and an upper right half (24), the long axis (21) dividing the lower half into a lower left half (25) and a lower right half (26), the upper left half (23), the upper right half (24) each being of circular arc shape and the distance of the center to the short axis being of c, the ratio of c to b being of 1, the lower half (25) being of circular arc shape and the center of d to the center of d being of the short axis (1).
7. A liquid cooling plate according to claim 1, characterized in that the symmetry axis of the fin (2) coincides with the flow direction of the liquid channel (13).
8. The liquid cooling plate according to claim 1, characterized in that the number of liquid inlets (11) and liquid outlets (12) is two.
9. A liquid cooling plate according to claim 8, wherein two of said liquid inlets (11) and two of said liquid outlets (12) form two pairs of liquid inlets and outlets, one of said liquid inlets (11) and one of said liquid outlets (12) of each of said pairs of liquid inlets and outlets being arranged in alignment.
10. A power cell thermal management system comprising a liquid cooling plate according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422183614.XU CN223108987U (en) | 2024-09-05 | 2024-09-05 | Liquid cooling plate and power battery thermal management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422183614.XU CN223108987U (en) | 2024-09-05 | 2024-09-05 | Liquid cooling plate and power battery thermal management system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223108987U true CN223108987U (en) | 2025-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422183614.XU Active CN223108987U (en) | 2024-09-05 | 2024-09-05 | Liquid cooling plate and power battery thermal management system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223108987U (en) |
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2024
- 2024-09-05 CN CN202422183614.XU patent/CN223108987U/en active Active
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