Bionic liquid cooling plate efficient heat dissipation assembly

Abstract

The utility model relates to the technical field of thermal management, in particular to a bionic liquid cooling plate high-efficiency heat dissipation assembly, which comprises a battery pack formed by arranging a plurality of battery units; the liquid cooling plate is attached to the bottom of the battery pack, the liquid cooling plate is composed of a back plate attached to the battery pack and a base plate fixedly connected with the back plate, a cooling liquid flow channel is formed in the base plate, and a water inlet pipe and a water outlet pipe which are communicated with the cooling liquid flow channel are arranged on the surface of the end of the back plate; the number of the positioning strips is two, the positioning strips are fixedly connected to the liquid cooling plate, and the two positioning strips are arranged on the two sides of the battery pack respectively; according to the bionic liquid cooling plate efficient heat dissipation assembly, by simulating the flow channel design of natural efficient heat dissipation structures such as veins and blood vessel networks, the flowing uniformity of cooling liquid in the flow channel is improved, and the common problems of flowing dead zones and uneven flow distribution in a traditional regular flow channel are effectively reduced; the problem of local hot spots of the power battery in a high-heat-density scene is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of thermal management technology, specifically to a biomimetic liquid cooling plate high-efficiency heat dissipation component. Background Technology

[0002] Liquid cooling plates, as core components of liquid cooling systems, are widely used for heat dissipation in high-heat-density components such as semiconductors, microprocessors, and electric vehicle batteries. While traditional liquid cooling plates meet heat dissipation requirements to a certain extent, their heat dissipation efficiency and thermal resistance still need improvement. In existing technologies, the flow channel design of liquid cooling plates is mostly regular in shape, such as serpentine or parallel channels. The sharp bends of serpentine channels easily form flow stagnation zones, leading to a decrease in local heat transfer coefficient and an increase in measured thermal resistance. On the other hand, the inlet static pressure difference in parallel channels causes large deviations in the flow rates of each branch, resulting in a large standard deviation in the surface temperature distribution of the heat source. Therefore, these designs still have certain limitations in terms of heat dissipation effect. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a biomimetic liquid cooling plate high-efficiency heat dissipation component, which solves the technical problems of dead zones and uneven flow distribution caused by the regular shape of the internal flow channels of existing liquid cooling plates.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a biomimetic liquid-cooled plate high-efficiency heat dissipation component, comprising:

[0005] A battery pack, wherein the battery pack is composed of multiple battery cells arranged in a manner;

[0006] The liquid cooling plate is attached to the bottom of the battery pack. The liquid cooling plate consists of a back plate attached to the battery pack and a substrate fixed to the back plate. Cooling liquid channels are formed inside the substrate. The surface of the end of the back plate is provided with an inlet pipe and an outlet pipe that communicate with the cooling liquid channels.

[0007] Positioning strips, two of which are fixed to the liquid cooling plate, are respectively set on both sides of the battery pack to define the position of the battery cells;

[0008] Side panels are fitted to both sides of the battery pack and fixed to the positioning strip.

[0009] Preferably, the coolant flow channel consists of an upper flow channel, a connecting flow channel, and a lower flow channel. The upper and lower flow channels are interconnected through the connecting flow channel, and the upper and lower flow channels are symmetrically distributed.

[0010] Preferably, the upper flow channel includes an inlet flow channel connected to the water inlet pipe. One side of the inlet flow channel is connected to an inner flow channel and two outer flow channels. The inner flow channel is provided with a branch flow channel. Both the inner flow channel and the outer flow channel are connected to the connecting flow channel.

[0011] Preferably, the downstream channel includes two inner channels and two outer channels connected to the connecting channel. The inner channels are provided with branch channels, and one side of the branch channels is connected to a direct channel. Both the direct channel and the outer channels are connected to the outlet channel, which is connected to the outlet pipe.

[0012] Preferably, the cross-sectional area of ​​the upper and lower flow channels gradually decreases along the direction of coolant flow.

[0013] Preferably, the side of the side plate away from the battery pack has a honeycomb structure.

[0014] Preferably, the liquid cooling plate is made of either aluminum alloy or copper alloy.

[0015] By employing the above technical solution, this utility model provides a biomimetic liquid cooling plate high-efficiency heat dissipation component, which has at least the following beneficial effects:

[0016] 1. This biomimetic liquid cooling plate high-efficiency heat dissipation component improves the uniformity of coolant flow in the flow channel by mimicking the flow channel design of efficient heat dissipation structures in nature such as leaf veins and blood vessel networks. It effectively reduces the flow dead zone and uneven flow distribution problems commonly found in traditional regular flow channels, and effectively solves the local hot spot problem of power batteries in high heat density scenarios.

[0017] 2. This biomimetic liquid cooling plate high-efficiency heat dissipation component has a flow channel shape and size that can be flexibly adjusted according to the requirements of heat dissipation area, coolant type and working pressure. The overall structure is simple and compact. Compared with traditional liquid cooling systems, it improves installation efficiency and reduces maintenance costs, and has broad application prospects. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0019] Figure 1 This is a three-dimensional structural diagram of the entire utility model;

[0020] Figure 2 This is an exploded view of the entire utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the substrate of this utility model;

[0022] Figure 4 This is a schematic diagram of the planar structure of the substrate of this utility model.

[0023] Figure label:

[0024] 1. Battery pack; 2. Side plate; 3. Positioning strip; 4. Liquid cooling plate; 41. Back plate; 411. Water inlet pipe; 412. Water outlet pipe; 42. Base plate; 421. Upper flow channel; 4211. Inlet flow channel; 4212. Inner flow channel one; 4213. Outer flow channel one; 4214. Branch flow channel one; 422. Lower flow channel; 4221. Inner flow channel two; 4222. Outer flow channel two; 4223. Branch flow channel two; 4224. Direct flow channel; 4225. Outlet flow channel; 423. Connecting flow channel. Detailed Implementation

[0025] 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.

[0026] The liquid cooling plate 4 is the core component of the liquid cooling system. It is mainly used for heat dissipation of high heat density electronic equipment or energy components. Through the circulation of coolant in the internal flow channel, the heat generated by the heat source is quickly transferred and dissipated, thereby controlling the temperature and ensuring stable operation of the equipment.

[0027] Due to the technical defects of existing technologies, such as flow dead zones and uneven flow distribution, please refer to... Figures 1-4 This embodiment provides a biomimetic liquid-cooled plate high-efficiency heat dissipation component, comprising:

[0028] Battery pack 1, which is composed of multiple battery cells arranged in a row;

[0029] Traditional battery cooling methods suffer from low efficiency and difficulty in effectively controlling battery temperature. For example, air cooling has limited effectiveness, and simple water cooling structures are unreasonable. To address this issue, a liquid cooling method is adopted, in which a liquid cooling plate 4 is attached to the bottom of the battery pack 1, which shortens the heat conduction path. The liquid cooling plate 4 consists of a back plate 41 attached to the battery pack 1 and a substrate 42 fixed to the back plate 41. Coolant channels are formed inside the substrate 42. The surface of the end of the back plate 41 is provided with an inlet pipe 411 and an outlet pipe 412 that communicate with the coolant channels. Cooling water enters the coolant channels inside the substrate 42 through the inlet pipe 411, flows along the coolant channels, and exits through the outlet pipe 412. As the coolant flows in the channels, it carries away heat, forming a liquid cooling effect. Furthermore, the liquid cooling plate 4 is made of either aluminum alloy or copper alloy. Aluminum alloy or copper alloy has good thermal conductivity, which can quickly transfer heat, effectively control the battery temperature, and ensure battery performance and lifespan.

[0030] The current battery pack 1 is prone to deviation when installed with the liquid cooling plate 4, which affects heat dissipation. To address this, two positioning strips 3 are provided, both of which are fixed to the liquid cooling plate 4. The two positioning strips 3 are respectively set on both sides of the battery pack 1 to limit the position of the battery cells and ensure that the battery pack 1 and the liquid cooling plate 4 are installed in an accurate and reliable manner.

[0031] The existing battery pack 1 has insufficient structural strength on both sides and is easily damaged. Therefore, the side plates 2 are attached to both sides of the battery pack 1 and fixed to the positioning strips 3. Furthermore, the side of the side plate 2 away from the battery pack 1 has a honeycomb structure. The side plates 2 are attached to both sides of the battery pack 1 to provide protection. The honeycomb structure reduces weight while increasing the strength and impact resistance of the side plates 2. The honeycomb structure also increases the surface area of ​​the side plates 2, enhances natural convection heat transfer, and helps to reduce the side temperature of the battery pack 1.

[0032] The existing liquid cooling plate 4 has a regular-shaped internal flow channel, which results in flow dead zones and uneven flow distribution. To address this issue, please refer to... Figure 3 and Figure 4 The coolant flow channel consists of an upper flow channel 421, a connecting flow channel 423, and a lower flow channel 422. The upper flow channel 421 and the lower flow channel 422 are interconnected through the connecting flow channel 423, and the upper flow channel 421 and the lower flow channel 422 are symmetrically distributed. Further, the upper flow channel 421 includes an inlet flow channel 4211 connected to the inlet pipe 411. One side of the inlet flow channel 4211 is connected to an inner flow channel 4212 and two outer flow channels 4213. The inner flow channel 4212 has a branch flow channel 4214. Both the inner flow channel 4212 and the outer flow channel 4213 are connected to the connecting flow channel 423. The lower flow channel 422 includes two inner flow channels 4221 and two outer flow channels 4221 connected to the connecting flow channel 423. 222, the inner flow channel 4221 is provided with a branch flow channel 4223, one side of the branch flow channel 4223 is connected to a direct flow channel 4224, the direct flow channel 4224 and the outer flow channel 4222 are both connected to the outlet flow channel 4225, and the outlet flow channel 4225 is connected to the water outlet pipe 412; the branch flow channel 4214 and the branch flow channel 4223 are both in the shape of biological structures such as leaf veins or blood vessel networks. The biomimetic flow channel design imitates the biological structures of efficient heat dissipation in nature, making the flow of coolant in the flow channel more uniform and efficient, thereby significantly improving heat dissipation efficiency and reducing thermal resistance. Compared with the traditional liquid cooling plate 4, the heat dissipation efficiency is increased by 30%-40%, and the thermal resistance of the liquid cooling plate 4 can be reduced by 50%-60%.

[0033] The cross-sectional area of ​​the upper flow channel 421 and the lower flow channel 422 gradually decreases along the direction of coolant flow; this can balance the flow rate of each branch flow channel and increase the flow velocity in hot spots (such as the center of battery pack 1), thereby improving the local heat transfer coefficient and effectively suppressing the temperature difference.

[0034] It should be noted that 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.

[0035] 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-cooled plate high-efficiency heat dissipation component, characterized in that, include: Battery pack (1), wherein the battery pack (1) is composed of multiple battery cells arranged in a row; Liquid cooling plate (4), the liquid cooling plate (4) is attached to the bottom of the battery pack (1). The liquid cooling plate (4) is composed of a back plate (41) attached to the battery pack (1) and a substrate (42) fixed to the back plate (41). A coolant flow channel is formed inside the substrate (42). An inlet pipe (411) and an outlet pipe (412) communicating with the coolant flow channel are provided on the surface of the end of the back plate (41). Positioning strip (3), there are two positioning strips (3), both of which are fixed on the liquid cooling plate (4). The two positioning strips (3) are respectively set on both sides of the battery pack (1) to define the position of the battery unit; Side plate (2), which is attached to both sides of the battery pack (1) and fixed to the positioning strip (3).

2. The biomimetic liquid-cooled plate high-efficiency heat dissipation component according to claim 1, characterized in that: The coolant flow channel consists of an upper flow channel (421), a connecting flow channel (423), and a lower flow channel (422). The upper flow channel (421) and the lower flow channel (422) are interconnected through the connecting flow channel (423), and the upper flow channel (421) and the lower flow channel (422) are symmetrically distributed.

3. The biomimetic liquid-cooled plate high-efficiency heat dissipation component according to claim 2, characterized in that: The upper flow channel (421) includes an inlet flow channel (4211) connected to the inlet pipe (411). One side of the inlet flow channel (4211) is connected to an inner flow channel (4212) and two outer flow channels (4213). The inner flow channel (4212) is provided with a branch flow channel (4214). Both the inner flow channel (4212) and the outer flow channel (4213) are connected to the connecting flow channel (423).

4. The biomimetic liquid-cooled plate high-efficiency heat dissipation component according to claim 2, characterized in that: The downstream channel (422) includes two inner channels (4221) and two outer channels (4222) connected to the connecting channel (423). The inner channel (4221) is provided with a branch channel (4223). One side of the branch channel (4223) is connected to a direct channel (4224). The direct channel (4224) and the outer channels (4222) are both connected to the outlet channel (4225). The outlet channel (4225) is connected to the outlet pipe (412).

5. The biomimetic liquid-cooled plate high-efficiency heat dissipation component according to claim 2, characterized in that: The cross-sectional area of ​​the upper flow channel (421) and the lower flow channel (422) gradually decreases along the flow direction of the coolant.

6. The biomimetic liquid-cooled plate high-efficiency heat dissipation component according to claim 1, characterized in that: The side plate (2) away from the battery pack (1) has a honeycomb structure.

7. The biomimetic liquid-cooled plate high-efficiency heat dissipation component according to claim 1, characterized in that: The liquid cooling plate (4) is made of either aluminum alloy or copper alloy.

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