Liquid cooling plate with multi-channel heat dissipation structure

Abstract

The utility model discloses a liquid cooling plate with a multichannel heat dissipation structure, which comprises a main body, the middle parts of the two ends of the main body are respectively provided with a liquid inlet and a liquid outlet, two mutually symmetrical and communicated flow channels are arranged in the main body, the liquid inlet and the liquid outlet are both communicated with the flow channels, and the liquid inlet and the liquid outlet are communicated with the flow channels. Each flow channel comprises a first channel, a second channel and a third channel which are communicated with one another, the first channel is arranged at one end close to the liquid inlet, the third channel is arranged at one end close to the liquid outlet, the second channel is arranged between the first channel and the third channel, a first turbulent flow part is arranged on the first channel, and a second turbulent flow part is arranged on the second channel. The device has the advantages that the turbulent flow part is designed to be in a gradient shape and distribution, and the turbulent flow part close to the liquid outlet is designed to be high in density and small in size to enhance turbulent flow; the turbulent flow part close to the liquid inlet is designed to be low in density and large in size so as to reduce pressure drop, gradient turbulent flow is matched with temperature changes of cooling liquid, the overall heat exchange efficiency is balanced, and uneven heat dissipation is reduced.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology, and in particular to a liquid cooling plate with a multi-channel heat dissipation structure. Background Technology

[0002] With the widespread application of battery modules, heat dissipation has increasingly become a key factor affecting battery performance and lifespan. Liquid cooling technology, as a highly efficient heat dissipation solution, has developed due to the continuous upgrading of thermal management requirements in the electronic equipment and new energy sectors. Battery module heat dissipation is often achieved using liquid cooling plates. When the coolant flows to different locations within the channels of the liquid cooling plate, the temperature of the coolant varies due to the different amounts of heat absorbed, resulting in different heat exchange efficiencies at different locations.

[0003] In the prior art, the flow channels on the liquid cooling plate are usually enhanced by turbulence through the turbulence section to compensate for the efficiency reduction caused by the temperature rise. However, the temperature at the liquid inlet is usually lower and the temperature at the liquid outlet is higher. In the prior art, the density and shape of the turbulence section are the same, so the temperature gradually increases near the liquid outlet and the heat exchange efficiency decreases accordingly. Therefore, the liquid cooling plate in the prior art has the problem of uneven heat dissipation, and this shortcoming urgently needs to be improved. Utility Model Content

[0004] The purpose of this invention is to address the above problems by providing a liquid cooling plate with a multi-channel heat dissipation structure, which has the advantage of more uniform overall heat exchange efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a liquid cooling plate with a multi-channel heat dissipation structure, comprising a main body, with an inlet and an outlet respectively provided at the middle of both ends of the main body, and two mutually symmetrical and connected flow channels provided within the main body, wherein the inlet and the outlet are both connected to the flow channels, characterized in that: each flow channel includes a first channel, a second channel, and a third channel that are interconnected, the first channel being located near the inlet, the third channel being located near the outlet, and the second channel being located between the first channel and the third channel, the first channel having a first turbulence portion, the second channel having a second turbulence portion, and the third channel having a third turbulence portion, wherein the density of the third turbulence portion on the third channel is greater than the density of the second turbulence portion on the second channel is greater than the density of the first turbulence portion on the first channel.

[0006] Preferably, each of the first turbulence portions is a first turbulence groove disposed on the center line of the first channel, and all the first turbulence grooves are evenly distributed along the length direction of the first channel.

[0007] Preferably, each group of the second turbulence section consists of two groups of symmetrically arranged second turbulence grooves, and each group of the second turbulence grooves is evenly distributed along the length direction of the second channel.

[0008] Preferably, each group of the third turbulence section consists of two mutually symmetrically arranged third turbulence grooves, and the second turbulence grooves in each group are evenly distributed along the length direction of the second channel.

[0009] Preferably, the number of groups of the third turbulence section is greater than that of the second turbulence section.

[0010] Preferably, the first, second, and third turbulence channels have the same shape.

[0011] Preferably, a connecting channel is provided between the third channel and the liquid outlet. The connecting channel is funnel-shaped and diffuses outwards. The cross-sectional area of ​​the connecting channel on the side closer to the liquid outlet is larger than the cross-sectional area of ​​the connecting channel on the side farther from the liquid outlet.

[0012] Preferably, the main body is provided with mounting holes for connecting bolts.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This utility model provides a liquid cooling plate with a multi-channel heat dissipation structure. The turbulence section is designed with a gradient shape and distribution. The turbulence section near the liquid outlet adopts a high-density, small-size design to enhance turbulence, while the turbulence section near the liquid inlet adopts a low-density, large-size design to reduce pressure drop. By matching the temperature change of the coolant through gradient turbulence, the overall heat exchange efficiency is balanced, and uneven heat dissipation is reduced. The gradual adjustment of structural parameters achieves comprehensive optimization of heat dissipation efficiency, pressure drop, and cost within a limited space. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a partial top view of the structure of this utility model;

[0017] Figure 3 This is a partial bottom view of the structure of this utility model;

[0018] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure of AA;

[0019] Figure 5 for Figure 2 A schematic diagram of the cross-sectional structure of BB.

[0020] Figure descriptions: 1. Main body; 11. Mounting hole; 12. Liquid inlet; 13. Liquid outlet; 2. Flow channel; 21. First channel; 211. First turbulence section; 2111. First turbulence groove; 22. Second channel; 221. Second turbulence section; 2211. Second turbulence groove; 23. Third channel; 231. Third turbulence section; 2311. Third turbulence groove; 24. Connecting channel. Detailed Implementation

[0021] 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.

[0022] like Figures 1-5 As shown, a liquid cooling plate with a multi-channel heat dissipation structure includes a main body 1. An inlet 12 and an outlet 13 are respectively provided at the middle of both ends of the main body 1. Two symmetrical and interconnected flow channels 2 are arranged within the main body 1. Both the inlet 12 and the outlet 13 are connected to the flow channels 2. Each flow channel 2 includes a first channel 21, a second channel 22, and a third channel 23 that are interconnected. The first channel 21 is located near the inlet 12, the third channel 23 is located near the outlet 13, and the second channel 22 is located between the first channel 21 and the third channel 23. The first channel 21 has a first turbulence-inducing part 211, and the second channel 22 has a second turbulence-inducing part 211. The flow section 221 has a third turbulence section 231 on the third channel 23. The density of the third turbulence section 231 on the third channel 23 is greater than the density of the second turbulence section 221 on the second channel 22, which is greater than the density of the first turbulence section 211 on the first channel 21. Since the temperature is lower in the area near the liquid inlet 12, the size of the turbulence is reduced to avoid excessive heat exchange. The temperature is higher in the area near the liquid outlet 13. By designing dense turbulence sections, the turbulence is enhanced to compensate for the efficiency decrease caused by the temperature rise. Therefore, by reducing the difference in heat exchange efficiency between the liquid inlet 12 and the liquid outlet 13, the overall temperature distribution of the battery module is more uniform, avoiding local overheating or overcooling.

[0023] Each of the first turbulence-disrupting parts 211 is a first turbulence-disrupting groove 2111 disposed on the center line of the first channel 21, and all the first turbulence-disrupting grooves 2111 are evenly distributed along the length direction of the first channel 21, thereby enabling the coolant to form turbulent motion. In this application, the distance between two adjacent first turbulence-disrupting grooves 2111 is 10mm.

[0024] Each group of the second turbulence section 221 consists of two groups of symmetrically arranged second turbulence grooves 2211, and each group of the second turbulence grooves 2211 is evenly distributed along the length of the second channel 22, thereby enabling the coolant to form turbulent motion. In this application, the center distance between the two second turbulence grooves 2211 in each group is 4mm, and the distance between two adjacent groups of the second turbulence section 221 is 12mm.

[0025] Each group of third turbulence sections 231 consists of two mutually symmetrically arranged third turbulence grooves 2311, and each group of second turbulence grooves 2211 is evenly distributed along the length direction of the second channel 22, thereby enabling the coolant to form turbulent motion. In this application, the center distance between the two third turbulence grooves 2311 in each group is 4mm, and the distance between two adjacent groups of second turbulence sections 221 is 6mm.

[0026] The number of groups of the third turbulence section 231 is greater than that of the second turbulence section 221, so the turbulence structure density of the third channel 23 is greater than that of the second channel 22.

[0027] The first turbulence groove 2111, the second turbulence groove 2211 and the third turbulence groove 2311 have the same shape. In this application, the first turbulence groove 2111, the second turbulence groove 2211 and the third turbulence groove 2311 are all circular grooves. In addition, they can be replaced by any shape such as rhombus, triangle, rectangle or date pit.

[0028] A connecting channel 24 is provided between the third channel 23 and the outlet 13. The connecting channel 24 is funnel-shaped and diffuses outward. The cross-sectional area of ​​the connecting channel 24 on the side closer to the outlet 13 is larger than the cross-sectional area on the side farther away from the outlet 13. The flow channel 2 adopts a gradually expanding design to optimize the coolant flow rate distribution and avoid local overheating or overcooling.

[0029] The main body 1 is provided with mounting holes 11 for connecting bolts, so that the liquid cooling plate can be installed on other equipment by using bolts.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, 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.

[0031] 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 liquid cooling plate with multi-channel heat dissipation structure, comprising a main body (1), a middle part of both ends of the main body (1) is respectively provided with a liquid inlet (12) and a liquid outlet (13), two mutually symmetrical and communicating flow channels (2) are arranged in the main body (1), the liquid inlet (12) and the liquid outlet (13) are both communicated with the flow channels (2), characterized in that: The flow channel (2) comprises a first channel (21), a second channel (22) and a third channel (23) which are in communication with each other, the first channel (21) is arranged at one end close to the liquid inlet (12), the third channel (23) is arranged at one end close to the liquid outlet (13), the second channel (22) is arranged between the first channel (21) and the third channel (23), the first channel (21) is provided with a first turbulence portion (211), the second channel (22) is provided with a second turbulence portion (221), the third channel (23) is provided with a third turbulence portion (231), the density of the third turbulence portion (231) on the third channel (23) is greater than the density of the second turbulence portion (221) on the second channel (22), which is greater than the density of the first turbulence portion (211) on the first channel (21).

2. The liquid cold plate with multi-channel heat dissipation structure according to claim 1, characterized in that: Each of the first turbulence portions (211) is a first turbulence groove (2111) arranged on the center line of the first channel (21), and all the first turbulence grooves (2111) are uniformly distributed along the length direction of the first channel (21).

3. The liquid cold plate with multi-channel heat dissipation structure of claim 2, wherein: Each group of the second turbulence portions (221) is composed of two groups of second turbulence grooves (2211) which are arranged symmetrically to each other, and each group of the second turbulence grooves (2211) is uniformly distributed along the length direction of the second channel (22).

4. The liquid cold plate with multi-channel heat dissipation structure of claim 3, wherein: Each group of the third turbulence portions (231) is composed of two third turbulence grooves (2311) which are arranged symmetrically to each other.

5. The liquid cold plate with multi-channel heat spreading structure of claim 4, wherein: The number of groups of the third turbulence portions (231) is greater than that of the second turbulence portions (221).

6. The liquid cold plate with multi-channel heat spreading structure of claim 5, wherein: The first turbulence groove (2111), the second turbulence groove (2211) and the third turbulence groove (2311) have the same shape.

7. The liquid cold plate with multi-channel heat spreading structure of claim 1, wherein: A connecting channel (24) is arranged between the third channel (23) and the liquid outlet (13), the connecting channel (24) is trumpet-shaped, and the cross-sectional area of the connecting channel (24) close to the liquid outlet (13) is greater than that of the connecting channel (24) away from the liquid outlet (13).

8. The liquid cold plate with multi-channel heat spreading structure of claim 1, wherein: The main body (1) is provided with a mounting hole (11) for connecting bolts.

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