Bionic fractal tree-shaped channel cooling flat plate

Abstract

The utility model relates to the technical field of battery cooling, in particular to a bionic fractal tree-shaped channel cooling flat plate which comprises a battery body, and two sides of the battery body are respectively provided with two heat dissipation mechanisms which are arranged side by side; the heat dissipation mechanism is composed of a cover plate, a bottom frame and bionic fractal tree-shaped channel layers, the cover plate is fixedly connected to one side of the bottom frame, and the bionic fractal tree-shaped channel layers are arranged in the cover plate and the bottom frame side by side. Due to the adoption of the bionic fractal tree-shaped channel layer, the resistance in the flowing process of fluid is reduced, compared with a traditional linear or simple curve channel, the fractal channel guides the fluid to form ordered vortexes through the complex geometrical shape of the fractal channel, and the vortexes are beneficial to reducing turbulent flow and friction of the fluid, so that the flowing resistance is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery cooling technical field, concretely is a kind of bionic fractal tree-shaped channel cooling flat plate. BACKGROUND

[0002] In the field of battery cooling, the prior art mainly adopts traditional cooling structures, such as natural convection cooling plates and forced convection cooling plates. These devices use air or liquid as cooling medium to absorb and transfer heat by contacting the battery surface. Structurally, these cooling structures usually include a cooling flat plate that directly contacts the battery surface and a channel structure for the flow of cooling medium. In principle, these structures rely on fluid dynamics and heat transfer principles to achieve heat transfer and dissipation through fluid flow.

[0003] Although the prior art can meet the needs of battery cooling to some extent, they have some significant problems and shortcomings. First, traditional cooling structures often have the problem of high flow resistance, which limits the flow rate of the cooling medium and thus affects the cooling efficiency. Second, the heat transfer efficiency is uneven, especially at high power output, the temperature distribution on the battery surface is uneven, which may cause overheating in some areas, affecting the performance and life of the battery. Finally, the cooling capacity of the existing structure is limited, and it is difficult to meet the higher requirements for cooling performance as battery technology develops in the future.

[0004] The cooling plate of the prior art is usually simple in design and lacks optimization of fluid flow and heat transfer process. For example, the traditional flat plate cooling plate lacks effective internal structure to guide fluid flow, resulting in single fluid flow path and high flow resistance. In addition, the contact between the cooling plate and the battery surface is insufficient, which also leads to uneven heat transfer efficiency. In some designs, additional turbulence elements or roughening treatment may be added to enhance heat transfer effect, but this further increases flow resistance, forming a trade-off. Therefore, the existing cooling plate needs to balance flow resistance and heat transfer efficiency in design, which limits the further improvement of cooling performance. SUMMARY

[0005] The utility model aims at providing a bionic fractal tree-shaped channel cooling flat plate to solve the problems raised in the background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A bionic fractal tree-shaped channel cooling flat plate, comprising

[0008] A battery body is provided with two heat dissipation mechanisms arranged side by side on both sides of the battery body.

[0009] The heat dissipation mechanism is composed of a cover plate, a bottom frame and a bionic fractal tree-shaped channel layer.

[0010] Preferably, the directions of the bionic fractal tree-shaped channel layers are opposite to each other.

[0011] Preferably, a refrigerant inlet is arranged on the left side of the bottom frame, and a refrigerant outlet is arranged on the side of the bottom frame away from the refrigerant inlet, and the refrigerant inlet and the refrigerant outlet are connected with the bionic fractal tree-shaped channel layer.

[0012] Preferably, the bionic fractal tree-shaped channel layer is composed of a plurality of fractal geometric-shaped pipes arranged in a branch-like manner, and the included angle between each branch of the pipes is 60°.

[0013] Preferably, the bottom frame and the battery body are fixedly connected through an adhesive.

[0014] Preferably, the pipes are made of copper or aluminum.

[0015] Compared with the prior art, the heat dissipation mechanism has the advantages that:

[0016] 1. The bionic fractal tree-shaped channel cooling flat plate reduces the flow resistance in the fluid flow process, and compared with the traditional straight line or simple curve channel, the fractal channel guides the fluid to form ordered vortex flow through the complex geometric shape, which helps to reduce the turbulence and friction of the fluid, thereby reducing the flow resistance.

[0017] 2. The bionic fractal tree-shaped channel cooling flat plate maximizes the contact area between the fluid and the battery surface due to the multiscale and self-similarity of the fractal channel, thereby improving the uniformity of heat exchange and helping to avoid local overheating, and ensuring that the battery can maintain stable temperature distribution under various working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole front view structural schematic diagram of the utility model;

[0019] Figure 2 It is a heat dissipation mechanism structural schematic diagram of the utility model;

[0020] Figure 3 It is a pipe installation structure schematic diagram of the utility model.

[0021] In the drawing: 1, battery body; 2, heat dissipation mechanism; 3, cover plate; 4, bottom frame; 5, bionic fractal tree-shaped channel layer; 6, refrigerant inlet; 7, refrigerant outlet; 8, pipe. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of the present application.

[0023] As shown in the technical solutions provided by the present application, Figures 1-3

[0024] A bionic fractal tree-shaped channel cooling flat plate, comprising a battery body 1, two heat dissipation mechanisms 2 are arranged side by side on both sides of the battery body 1; the heat dissipation mechanism 2 is composed of a cover plate 3, a bottom frame 4 and a bionic fractal tree-shaped channel layer 5, the cover plate 3 is fixedly connected to one side of the bottom frame 4, and the bionic fractal tree-shaped channel layer 5 is arranged side by side inside the cover plate 3 and the bottom frame 4; the directions of the bionic fractal tree-shaped channel layers 5 are opposite to each other, a refrigerant inlet 6 is arranged on the left side outside of the bottom frame 4, and a refrigerant outlet 7 is arranged on the side outside of the bottom frame 4 away from the refrigerant inlet 6, the refrigerant inlet 6 and the refrigerant outlet 7 are in communication with the bionic fractal tree-shaped channel layer 5, the bionic fractal tree-shaped channel layer 5 is composed of a plurality of fractal geometric shape pipes 8, the pipes 8 are arranged in a branch and leaf shape, the included angle between each branch of the pipes 8 is 60°, and the material of the pipes 8 is copper or aluminum;

[0025] In the embodiment, the shortest branch of the pipe 8 is the first layer, and the length is about 4 times the diameter of the channel, the length of each layer of branches is 1.5 times the length of the last layer of branches, for example, when the diameter of the channel is 5mm, the length of the first layer is 20mm, the length of the second layer is 30mm, the length of the third layer is 45mm, the length of the fourth layer is 67.5mm, and so on, so that the fluid flow can be optimized, the resistance can be reduced, and the heat exchange can be enhanced.

[0026] As shown in the technical solutions provided by the present application, Figure 1 The bottom frame 4 and the battery body 1 are fixedly connected through an adhesive.

[0027] In the embodiment, the bionic fractal tree-shaped channel layer 5 is directly attached to the outer surface of the battery body 1 through an adhesive, so that the device will not be separated due to vibration or pressure change during fluid flow, and the maximum heat exchange efficiency is achieved.

[0028] ​Working principle: the device is based on the principle of bionics, imitating the fractal structure of efficient fluid transmission and heat exchange in nature, the bionic fractal tree channel layer 5 imitates the vascular structure in the biological body, through the self-similarity and multi-scale characteristics of fractal geometry, the fluid flow path is optimized, the flow resistance is reduced, and the heat exchange efficiency between the fluid and the surface of the battery body 1 is enhanced, in the working process, the cooling medium (such as liquid or air) flows through the bionic fractal tree channel layer 5, due to the geometric characteristics of the fractal channel, the fluid forms vortex flow in the flow process, these vortex flows help to enhance the heat exchange between the fluid and the surface of the battery, and a more uniform heat transfer effect is realized.

[0029] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only preferred examples of the utility model and are not used to limit the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A biomimetic fractal dendritic channelled cooling panel, characterised in that: The utility model relates to a battery cooling device, including Battery body (1), both sides of battery body (1) are provided with two heat dissipation mechanisms (2) that are arranged side by side; The heat dissipation mechanism (2) is composed of cover plate (3), bottom frame (4), bionic fractal tree channel layer (5), the cover plate (3) is fixedly connected to one side of bottom frame (4), and the bionic fractal tree channel layer (5) is arranged side by side in the inside of cover plate (3) and bottom frame (4).

2. A bionic fractal tree-shaped channel cooling flat plate according to claim 1, characterized in that: The direction of every two bionic fractal tree channel layers (5) is opposite.

3. A bionic fractal tree-shaped channel cooling flat plate according to claim 2, characterized in that: The left side outside of bottom frame (4) is provided with refrigerant inlet (6), and the outside of the side of bottom frame (4) away from refrigerant inlet (6) is provided with refrigerant outlet (7), and refrigerant inlet (6), refrigerant outlet (7) are connected with bionic fractal tree channel layer (5).

4. The bionic fractal tree-shaped channel cooling flat plate according to claim 1, characterized in that: The bionic fractal tree channel layer (5) is composed of multilayer fractal geometric shape pipe (8), the pipe (8) is arranged in the form of branch and twig, and the included angle between each branch of pipe (8) is 60 DEG.

5. The bionic fractal tree-shaped channel cooling flat plate according to claim 1, characterized in that: The bottom frame (4) is fixedly connected with battery body (1) through adhesive.

6. A bionic fractal tree-shaped channel cooling flat plate according to claim 4, characterized in that: The material of pipe (8) is copper or aluminum.

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