Novel bionic wing vein liquid cooling plate

Abstract

The invention discloses a novel bionic wing vein liquid cooling plate which is provided with a liquid inlet and a liquid outlet and comprises an upper liquid cooling plate and a lower liquid cooling plate. The upper liquid cooling plate and the lower liquid cooling plate are welded and fixed to form a closed cavity structure; the lower liquid cooling plate is provided with V-shaped flow channels which are symmetrically arranged along the central axis of the main flow channel at equal intervals, and the V-shaped flow channels are provided with a plurality of side flow channels; the first bypass flow channels are communicated with the main flow channel, the second bypass flow channels and the third bypass flow channels are in one-to-one correspondence to form a hexagonal flow channel, the vertexes of the two sides of the hexagonal flow channel are communicated with the first bypass flow channels and the fourth bypass flow channels respectively, and the first confluence channel is communicated with the fourth bypass flow channels; the second confluence channel is communicated with the first confluence channel and the right side of the main flow channel; according to the invention, the lower liquid cooling plate is provided with a plurality of zigzag flow channels to enhance the heat exchange efficiency of the cooling liquid and the upper liquid cooling plate, so that the whole liquid cooling plate has a better heat dissipation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of (battery) liquid cooling plates, and more specifically to a novel bionic wing vein liquid cooling plate. Background Art

[0002] With the rapid development of pure electric vehicles, more and more attention is paid to battery safety. Excessive temperature or large temperature difference of the battery pack may cause thermal runaway of the battery pack and cause fire. Therefore, the heat dissipation system of the battery system is particularly important.

[0003] Under current development, liquid cooling is the main method of heat dissipation for battery systems. The liquid cooling plate is the main component of liquid cooling. The heat generated by the battery pack is transferred to the liquid cooling plate, and then the coolant in the liquid cooling plate takes the heat away. The traditional flow channel liquid cooling plate cannot take away more heat due to the simple internal flow channel design and insufficient contact with the cold plate wall. Heat accumulation may occur, affecting the service life and safety of the battery pack. Summary of the invention

[0004] The technical problem to be solved by the present invention is to improve the heat dissipation capacity of the liquid cooling plate and reduce the temperature difference of the battery pack.

[0005] To achieve the above object, the present invention provides a novel liquid cooling plate, comprising: A liquid inlet, a liquid outlet, an upper liquid cooling plate and a lower liquid cooling plate, wherein the upper liquid cooling plate and the lower liquid cooling plate are fixed by welding to form a closed cavity structure, and the lower liquid cooling plate is provided with a plurality of flow channels.

[0006] By setting multiple flow channels on the lower liquid cooling plate and increasing the contact area between the coolant and the upper liquid cooling plate through multiple diversions and confluences, the heat exchange capacity between the coolant and the upper liquid cooling plate is enhanced, and the temperature difference of the battery pack is reduced.

[0007] In some technical solutions, the main channel includes several V-shaped channels on both sides, the V-shaped channels are symmetrical along the central axis in the length direction of the main channel, and the V-shaped channels include multiple defined tortuous channels, which are equidistantly arranged along the length direction of the main channel.

[0008] In some technical solutions, the V-shaped flow channel is interconnected with the main flow channel and the first confluence channel.

[0009] In some technical solutions, the included angle between the main flow channel and the first side flow channel along the direction from the liquid inlet to the liquid outlet is 30-75°.

[0010] In some technical solutions, the second bypass flow channel includes a first branch flow channel, a second branch flow channel, and a third branch flow channel, and the second bypass flow channel is connected to the first branch flow channel, the third branch flow channel, and the fourth branch flow channel. The third bypass flow channel includes a fourth branch flow channel, a fifth branch flow channel, and a sixth branch flow channel.

[0011] In some technical solutions, the third bypass channel is connected to the first bypass channel, the second bypass channel and the fourth bypass channel. The first branch channel is parallel to the sixth branch channel, the second branch channel is parallel to the fifth branch channel, and the third branch channel is parallel to the fourth branch channel.

[0012] In some technical solutions, the second bypass flow channel and the third bypass flow channel are symmetrical along the central axis of the first bypass flow channel.

[0013] In some technical solutions, the included angle between the third branch flow channel and the sixth branch flow channel is 60-120°, and the third branch flow channel is connected to the sixth branch flow channel and the fourth bypass flow channel.

[0014] In some technical solutions, the second bypass flow channel and the third bypass flow channel constitute a hexagonal flow channel, and the hexagonal flow channel is respectively connected to the first bypass flow channel and the fourth bypass flow channel.

[0015] In some technical solutions, the first confluence channel is connected to the fourth bypass channel and the second confluence channel.

[0016] In some technical solutions, two ends of the main flow channel are respectively connected to a liquid inlet and a liquid outlet, and the main flow channel is connected to a first side flow channel of the V-shaped flow channel.

[0017] In some technical solutions, the entrance and exit can be set as single in and single out, single in and double out, double in and double out, or double in and single out.

[0018] The present invention provides a liquid cooling plate, wherein a plurality of V-shaped flow channels are arranged on both sides of the lower liquid cooling plate, and the cooling liquid is continuously divided and merged in the plurality of V-shaped flow channels to increase the cooling area and reduce the temperature difference of the liquid cooling plate, thereby improving the cooling efficiency of the liquid cooling plate and making the entire liquid cooling plate have a better heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is an exploded view of a liquid cooling plate provided according to the present invention.

[0020] Figure 2 is a top view of the lower liquid cooling plate provided according to the present invention.

[0021] Figure 3 Schematic diagram of a V-shaped flow channel provided according to the present invention.

[0022] Figure 4 Schematic diagram of the coolant flow provided by the present invention Figure 5 This is a cross-sectional view of the liquid inlet and outlet provided according to the present invention. Figure numerals: Figure numerals: 1, upper liquid cooling plate; 2, lower liquid cooling plate; 3, liquid inlet; 4, liquid outlet; 10, main channel; 11, first side channel; 12, second side channel; 121, first branch channel; 122, second branch channel; 123, third branch channel; 13, third side channel; 131, fourth branch channel; 132, fifth branch channel; 133, sixth branch channel; 14, fourth side channel; 15, first converging channel; 16, second converging channel; 100, V-shaped channel; DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings. Any changes made by those skilled in the art to the structure, method or function of the liquid cooling plate of the present invention with reference to the description are within the protection scope of the present invention.

[0024] In the description of the invention, it should be noted that terms such as "upper", "lower", "left", "right", "front", "back", "center", "central axis", "symmetrical arrangement" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only simplified descriptions for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0025] In the description of the present invention, it needs to be understood that the terms "first", "second", "third", "fourth", "fifth" and "sixth" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0026] Combination Figure 1-5 As shown, an embodiment of the present invention provides a novel bionic liquid cooling plate, comprising: Lower liquid cooling plate 1; It should be noted that the lower liquid cooling plate 1 includes a plurality of V-shaped channels and converging channels symmetrically and equidistantly arranged along the central axis of the main channel 11. The upper side of the lower liquid cooling plate 1 is the upper liquid cooling plate 2, the left side is the liquid inlet 3, and the right side is the liquid outlet 4.

[0027] As a possible implementation, the flow channel shape of the lower liquid cooling plate 1 is made by a pipe embedding process, profile + welding, die casting + welding, or inflation process, and then the outlet and inlet are processed by CNC.

[0028] In some embodiments, the lower liquid cooling plate 1 is connected to the upper liquid cooling plate 2 by stamping and welding processes, and the liquid inlet 3 and the liquid outlet 4 are connected to the lower liquid cooling plate 1 by welding.

[0029] It should be further explained that after the coolant flows into the front section and the middle section of the main channel 10 through the liquid inlet 3, it flows into the first bypass channel 11 and is diverted to the second bypass channel 12 and the third bypass channel 13. This makes the flow velocity distribution of the coolant more uniform, enhances the heat exchange capacity between the coolant and the upper liquid cooling plate 2, and improves the heat dissipation effect of the entire liquid cooling plate.

[0030] It should be noted that the second bypass channel 12 is divided into a first bypass channel 121, a second bypass channel 122, and a third bypass channel 123, and the third bypass channel 13 is divided into a fourth bypass channel 131, a fifth bypass channel 132, and a sixth bypass channel 133. The coolant merges into the fourth bypass channel 14 in the third bypass channel 123 and the sixth bypass channel 133, which increases the contact area between the coolant and the upper liquid cooling plate 2, effectively reduces the flow resistance of the coolant, and thus reduces the temperature difference of the entire liquid cooling plate.

[0031] It should be further explained that the fourth side channel 14 in the V-shaped channel 100 merges into the first confluence channel 15, the first confluence channel 15 is connected to the second confluence channel 16, the second confluence channel 16 merges with the rear end of the main channel 10 and is connected to the liquid outlet 4, the first confluence channel 15 and the second confluence channel 16 are arranged on both sides of the lower liquid cooling plate, so that the temperature difference of the entire liquid cooling plate is reduced, so that the temperature distribution of the battery pack is uniform.

[0032] It should be further explained that the V-shaped flow channel is symmetrically and equidistantly arranged along the central axis of the main flow channel 11, and the second bypass flow channel 12 and the third bypass flow channel 13 are symmetrically arranged along the central axis of the first bypass flow channel 11. The symmetrical arrangement can effectively reduce the temperature difference of the battery pack and make the temperature distribution of the entire battery pack more uniform. The first branch flow channel 121 is parallel to the sixth branch flow channel 133. The second branch flow channel 122 is parallel to the fifth branch flow channel 132; the third branch flow channel 123 is parallel to the fourth branch flow channel 131. This increases the contact area between the coolant and the upper liquid cooling plate 2, allowing the coolant to take away more heat, thereby improving the heat dissipation capacity of the liquid cooling plate.

[0033] It should be further explained that the angle between the main flow channel 10 and the first bypass flow channel 11 along the direction from the liquid inlet to the liquid outlet is 30-75°, and the angle between the third branch flow channel 123 and the sixth branch flow channel 133 is 60-120°. This increases the flow rate of the coolant, enhances the heat exchange effect between the coolant and the upper liquid cooling plate 2, effectively reduces the maximum temperature of the liquid cooling plate, and thus improves the heat dissipation effect of the entire liquid cooling plate.

[0034] Upper liquid cooling plate 2: In some embodiments, the upper liquid cooling plate 2 can be made by aluminum extrusion, stamping, or CNC, and the upper liquid cooling plate 2 is connected to the lower liquid cooling plate 1 by welding.

[0035] It should be noted that the upper liquid cooling plate 2 manufactured by the aluminum extrusion process can be produced quickly with relatively low cost, and CNC manufacturing can achieve high dimensional accuracy.

[0036] Liquid inlet 3: In some embodiments, the liquid inlet 3 is formed by aluminum extrusion or CNC processing, and the liquid inlet 3 is connected to the lower liquid cooling plate 1 by a seal and welding.

[0037] Liquid outlet 4: In some embodiments, the liquid outlet 4 is formed by aluminum extrusion or CNC processing, and the liquid inlet 4 is connected to the lower liquid cooling plate 1 by sealing and welding.

[0038] As a feasible method, a collecting pipe (not shown) is set at the liquid inlet 3 and the liquid outlet 4. When the number of batteries is large or the battery volume is large, multiple liquid cooling plates can be connected in series or in parallel through the collecting pipe, so as to further improve the heat dissipation effect of the liquid cooling plate and improve the applicability of the entire liquid cooling plate.

[0039] The above is only used to illustrate the technical solution of the present invention, but not to limit it. It can be fully applied to the field to which the present invention is applicable. For ordinary technicians in this field, it is still possible to modify or replace the technical solutions and technical features in the aforementioned description and embodiments. Therefore, without departing from the general concept defined by the claims and their equivalents, the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A novel bionic wing vein liquid cooling plate, provided with a liquid inlet and a liquid outlet, characterized in that , including an upper liquid cooling plate and a lower liquid cooling plate, the upper liquid cooling plate and the lower liquid cooling plate are fixed by welding to form a closed cavity structure, the lower liquid cooling plate is provided with a V-shaped flow channel symmetrically and equidistantly arranged along the central axis direction of the main flow channel, the V-shaped flow channel includes a plurality of side flow channels, including a first side flow channel, a second side flow channel, a third side flow channel, and a fourth side flow channel, the lower liquid cooling plate includes a main flow channel, a first confluence channel, a second confluence channel and a plurality of V-shaped flow channels.

2. The liquid cooling plate according to claim 1, characterized in that: The included angle between the main flow channel and each of the first side flow channels along the direction from the liquid inlet to the liquid outlet is 30-75°, and the main flow channel is interconnected with the liquid inlet and each of the first side flow channels.

3. The liquid cooling plate according to claim 1, characterized in that: Both sides of each second bypass flow channel and each third bypass flow channel are interconnected with each first bypass flow channel and each fourth bypass flow channel, and are symmetrical along the length direction of the central axis of each first bypass flow channel.

4. The liquid cooling plate according to claim 3, characterized in that: The second bypass flow channels include a first branch flow channel, a second branch flow channel, and a third branch flow channel, and the third bypass flow channels include a fourth branch flow channel, a fifth branch flow channel, and a sixth branch flow channel.

5. The liquid cooling plate according to claim 4, characterized in that: The included angle between the third branch flow channel and the sixth branch flow channel is 60-120°, and both are connected to the fourth bypass flow channel.

6. The liquid cooling plate according to claim 4, characterized in that: The first branch channel and the sixth branch channel are parallel to each other; the second branch channel and the fifth branch channel are parallel to each other; and the third branch channel and the fourth branch channel are parallel to each other.

7. The liquid cooling plate according to claim 1, characterized in that: The first confluence channel is connected to the fourth bypass channel and the second confluence channel.

8. The liquid cooling plate according to claim 1, characterized in that: The second bypass flow channel and the third bypass flow channel form a hexagonal flow channel, and two ends of the hexagonal flow channel are respectively connected to the first bypass flow channel and the fourth bypass flow channel.

9. The liquid cooling plate according to claim 1, characterized in that: Both ends of the V-shaped flow channel are interconnected with the first confluence channel, and the middle section of the V-shaped flow channel is interconnected with the main flow channel.

10. The liquid cooling plate according to claim 1, characterized in that: The second confluence channel is connected to the main channel, the main channel is connected to the liquid inlet and the liquid outlet, and the liquid inlet and the liquid outlet are arranged on both sides of the lower liquid cooling plate.

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