Bionic liquid cooling plate heat dissipation structure imitating leaf vein distribution

Abstract

The utility model relates to the technical field of liquid cooling plate heat dissipation, in particular to a bionic liquid cooling plate heat dissipation structure imitating leaf vein distribution, which comprises a battery panel connected with a plurality of battery packs, and a heat dissipation mechanism for eliminating heat around the battery packs is arranged at the bottom ends of the battery packs. By arranging the heat dissipation mechanism, adopting bionic flow channel design and simulating efficient heat dissipation biological structures (such as veins, blood vessel networks and the like) in nature, cooling liquid can flow more uniformly and efficiently in the flow channel, so that the heat dissipation efficiency is remarkably improved, and by arranging the heat dissipation mechanism, the whole device is simple, easy to manufacture and low in cost. The internal bionic flow channel is achieved through the precise CNC machining technology, the manufacturing cost is reduced, in addition, the whole device is suitable for heat dissipation of high-heat-density assemblies such as semiconductors and microprocessors, can also be applied to the fields such as electric vehicle batteries and has wide application prospects.

Description

Technical Field

[0001] This utility model relates to the field of liquid cooling plate heat dissipation technology, and in particular to a biomimetic liquid cooling plate heat dissipation structure that mimics the distribution of leaf veins. Background Technology

[0002] As a core component of liquid cooling systems, liquid cooling plates are widely used for heat dissipation of high heat density components such as semiconductors, microprocessors, and electric vehicle batteries. Although traditional liquid cooling plates meet heat dissipation requirements to a certain extent, there is still room for improvement in terms of heat dissipation efficiency and thermal resistance.

[0003] In existing technologies, the flow channel design of liquid cooling plates is mostly regular in shape, such as serpentine or parallel channels. These designs have certain limitations in terms of heat dissipation effect. When facing high-power, high-heat-fluidity heat dissipation requirements, regular channels cannot guarantee the uniform distribution of coolant in all areas. The heat dissipation efficiency of regular channels is too dependent on the flow rate and velocity of the coolant. Under low flow conditions, the heat dissipation performance drops sharply, making it difficult to meet the heat dissipation requirements of equipment under different operating conditions, thus reducing heat dissipation efficiency. In view of this, we provide a biomimetic liquid cooling plate heat dissipation structure that mimics the distribution of leaf veins. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a biomimetic liquid cooling plate heat dissipation structure that mimics the distribution of leaf veins. This solves the technical problems of limited heat dissipation efficiency, high thermal resistance, and uneven coolant flow in existing liquid cooling plates, which reduce heat dissipation efficiency. This invention achieves improved heat dissipation efficiency and reduced thermal resistance, thereby enhancing the overall heat dissipation efficiency of the device.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a biomimetic liquid cooling plate heat dissipation structure that mimics the distribution of leaf veins, including a battery panel connected to multiple battery packs, wherein the bottom of the battery pack is provided with a heat dissipation mechanism to eliminate the heat around itself.

[0006] The heat dissipation mechanism includes a liquid cooling plate connected to the bottom of the battery pack. An inlet pipe is installed at the top of the liquid cooling plate. The liquid cooling plate is provided with a flow channel one, a flow channel two, a flow channel three, and a vertical flow channel. An outlet pipe is connected to the other side of the top of the liquid cooling plate.

[0007] Preferably, the battery panels are symmetrically distributed at both ends of the battery pack, and the shape of the flow channel is the same as that of a leaf vein.

[0008] Preferably, the biomimetic flow channels inside the liquid cooling plate are manufactured by precision CNC machining, and the liquid cooling plate is made of aluminum alloy.

[0009] Preferably, a composite thermally conductive layer is provided between the liquid cooling plate and the first flow channel, the second flow channel, the third flow channel, and the vertical flow channel, and the composite thermally conductive layer is composed of graphene-reinforced phase change material.

[0010] Preferably, the fluid inlet and outlet inside the liquid cooling plate adopt an asymmetrical design, and the surfaces of flow channel one, flow channel two, flow channel three and vertical flow channel are provided with micron-level turbulence-inducing structures.

[0011] Preferably, the precision CNC machining is carried out using a five-axis linkage machining center, with machining accuracy controlled within ±0.01mm, a flow channel sidewall inclination angle of 35°-85°, and a depth-to-width ratio of 1:1-3:1.

[0012] By employing the above technical solution, this utility model provides a biomimetic liquid cooling plate heat dissipation structure that mimics the distribution of leaf veins, which has at least the following beneficial effects:

[0013] 1. This utility model, by setting up a heat dissipation mechanism and adopting a biomimetic flow channel design, imitates the biological structures in nature that have efficient heat dissipation (such as leaf veins, blood vessel networks, etc.), so that the flow of coolant in the flow channel is more uniform and efficient, thereby significantly improving the heat dissipation efficiency. Compared with traditional liquid cooling plates, the heat dissipation efficiency is enhanced.

[0014] 2. By setting up a heat dissipation mechanism, the entire device is simple and easy to manufacture. The internal biomimetic flow channel is realized through precision CNC machining technology, which reduces manufacturing costs. In addition, the entire device is not only suitable for heat dissipation of high heat density components such as semiconductors and microprocessors, but can also be applied to fields such as electric vehicle batteries, and has broad application prospects. Attached Figure Description

[0015] The accompanying drawings, which are provided to further illustrate this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the bottom structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This is a cross-sectional view of the heat dissipation mechanism of this utility model;

[0020] Figure 4 This is a schematic diagram of the external structure of the battery pack of this utility model.

[0021] In the diagram: 1. Battery pack; 2. Battery panel;

[0022] 3. Heat dissipation mechanism; 31. Liquid inlet pipe; 32. Flow channel one; 33. Flow channel two; 34. Flow channel three; 35. Vertical flow channel; 36. Liquid outlet pipe; 37. Liquid cooling plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1

[0025] Existing liquid cooling plates suffer from limited heat dissipation efficiency, high thermal resistance, and uneven coolant flow, all of which reduce heat dissipation efficiency. This embodiment provides a biomimetic liquid cooling plate heat dissipation structure that mimics the distribution of leaf veins. Please refer to [reference needed]. Figure 1 - Figure 4 This biomimetic liquid cooling plate structure, mimicking the vein pattern of a leaf, improves heat dissipation efficiency and reduces thermal resistance, thereby enhancing the overall heat dissipation efficiency of the device. It includes battery panels 2 connected to multiple battery packs 1, symmetrically distributed at both ends of the battery packs 1. The battery panels 2 serve to fix the battery packs 1, improving heat dissipation stability. A heat dissipation mechanism 3 is located at the bottom of the battery packs 1 to eliminate heat from their surroundings. The heat dissipation mechanism 3 allows for more uniform and efficient coolant flow, thus improving heat dissipation efficiency and reducing flow resistance, thereby lowering the thermal resistance of the liquid cooling plate 37.

[0026] In existing technologies, the flow channel design of the liquid cooling plate 37 is mostly in regular shapes, such as serpentine or parallel flow channels. These designs have certain limitations in heat dissipation. To solve the above problems, the heat dissipation mechanism 3 includes a liquid cooling plate 37 connected to the bottom of the battery pack 1. The biomimetic flow channel inside the liquid cooling plate 37 is made by precision CNC machining. CNC machining can achieve very high machining accuracy, ensuring the accuracy of part dimensions and shape, improving production efficiency, and also improving the machining quality of the biomimetic flow channel. Precision CNC machining is carried out using a five-axis linkage machining center, with machining accuracy controlled within ±0.01mm. The inclination angle of the flow channel sidewall is 35°-85°, and the depth-to-width ratio is 1:1-3:1, thereby improving the production accuracy of the biomimetic flow channel. Furthermore, the liquid cooling plate 37 is made of aluminum alloy, which has good thermal conductivity and can quickly transfer heat from the heat source to the coolant, improving heat dissipation efficiency. In addition, aluminum alloy has good recyclability, meeting the requirements of environmental protection and sustainable development. The liquid cooling plate 37 and the flow channel A composite heat-conducting layer is provided between flow channels 32, 33, 34 and vertical flow channel 35, which enables the formation of a heat conduction path between the biomimetic flow channels, eliminates air gaps caused by roughness of the contact surface, thereby reducing thermal resistance, and also alleviates interfacial stress caused by differences in thermal expansion coefficients, preventing delamination or deformation under long-term thermal cycling. The composite heat-conducting layer is made of graphene-reinforced phase change material. An inlet pipe 31 is installed at the top of the liquid cooling plate 37. Flow channels 32, 33, 34 and vertical flow channel 35 are provided inside the liquid cooling plate 37. An outlet pipe 36 is connected to the other side of the top of the liquid cooling plate 37. The shape of flow channel 32 is the same as that of leaf veins, which can realize the uniform distribution of coolant and avoid the "flow dead zone" common in traditional serpentine / parallel flow channels, ensuring a more uniform temperature distribution on the heat dissipation surface, thereby increasing the effective heat exchange area. The coolant flows into the liquid cooling plate 37 through the inlet pipe 31. Through the flow channels 32, 33, 34 and vertical flow channel 35, the coolant can flow evenly inside the liquid cooling plate 37, thereby improving heat dissipation efficiency and optimizing the flow path of the coolant, reducing flow resistance and effectively reducing the thermal resistance of the liquid cooling plate 37. When the coolant flows inside the liquid cooling plate 37, it absorbs the heat generated by the battery pack 1 through heat conduction. The coolant flows out of the liquid cooling plate 37 from the outlet pipe 36 and enters the circulation loop of the cooling system. After being cooled, it re-enters the liquid cooling plate 37 through the fluid inlet, forming a closed-loop circulation system for continuous heat dissipation and improving heat dissipation efficiency.

[0027] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A biomimetic liquid cooling plate heat dissipation structure mimicking the distribution of leaf veins, comprising a battery panel (2) connected to multiple battery packs (1), characterized in that: The bottom of the battery pack (1) is provided with a heat dissipation mechanism (3) to eliminate the heat around itself. The heat dissipation mechanism (3) includes a liquid cooling plate (37) connected to the bottom of the battery pack (1). An inlet pipe (31) is installed at the top of the liquid cooling plate (37). The liquid cooling plate (37) is provided with a flow channel one (32), a flow channel two (33), a flow channel three (34) and a vertical flow channel (35). An outlet pipe (36) is connected to the other side of the top of the liquid cooling plate (37).

2. The biomimetic liquid-cooled plate heat dissipation structure mimicking the vein distribution of leaves according to claim 1, characterized in that: The battery panels (2) are symmetrically distributed at both ends of the battery pack (1), and the shape of the flow channel (32) is the same as that of the leaf vein.

3. The biomimetic liquid-cooled plate heat dissipation structure mimicking the vein distribution of leaves according to claim 1, characterized in that: The internal biomimetic flow channel of the liquid cooling plate (37) is made by precision CNC machining, and the liquid cooling plate (37) is made of aluminum alloy.

4. The biomimetic liquid-cooled plate heat dissipation structure mimicking the distribution of leaf veins according to claim 1, characterized in that: A composite thermal conductive layer is provided between the liquid cooling plate (37) and the first flow channel (32), the second flow channel (33), the third flow channel (34) and the vertical flow channel (35), and the composite thermal conductive layer is composed of graphene-reinforced phase change material.

5. The biomimetic liquid-cooled plate heat dissipation structure mimicking the vein distribution of leaves according to claim 1, characterized in that: The fluid inlet and outlet inside the liquid cooling plate (37) are designed asymmetrically, and the surfaces of the flow channel one (32), flow channel two (33), flow channel three (34) and vertical flow channel (35) are provided with micron-level turbulence-inducing structures.

6. The biomimetic liquid-cooled plate heat dissipation structure mimicking the vein distribution of leaves according to claim 3, characterized in that: The precision CNC machining is carried out using a five-axis linkage machining center, with machining accuracy controlled within ±0.01mm, a flow channel sidewall inclination angle of 35°-85°, and a depth-to-width ratio of 1:1-3:1.

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