Liquid cooling plate

Abstract

The utility model discloses a liquid cooling plate which is used for cooling a heating component. The plate comprises a plate body, a water inlet groove, a water outlet groove and a main flow channel, the water inlet groove, the water outlet groove and the main flow channel are formed in the plate body, flow dividing units are evenly arranged on the main flow channel, each flow dividing unit comprises a first flow dividing structure and a second flow dividing structure, and each first flow dividing structure at least comprises two separated protruding parts; the main flow channel is divided into at least three branch flow channels by the two separated protruding parts, and the second flow dividing structure comprises at least one protruding part.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchange structures, and in particular to a liquid cooling plate. Background Art

[0002] Liquid cooling plates are widely used in energy storage systems and electronic devices for heat dissipation and temperature control. The traditional liquid cooling plate structure is usually made of a six-series aluminum alloy through a die stamping profile to form a liquid cooling groove, and then combined with the liquid cooling plate upper plate by flame brazing. However, this traditional structure has the problem of insufficient fluid flow channel design, especially when the fluid flows through the liquid cooling groove, it may encounter flow resistance problems.

[0003] The flow resistance problem refers to the resistance encountered by the fluid during the flow process, which will affect the cooling efficiency and energy consumption of the liquid cooling plate. Traditional liquid cooling plate products do not fully simulate and analyze the fluid flow channel during design, and do not take into account the liquid damping phenomenon, resulting in poor fluid flow and low heat exchange efficiency.

[0004] Therefore, in order to improve the cooling efficiency and performance stability of the liquid cooling plate, an improved liquid cooling plate structure is needed to overcome the flow resistance problem and improve the fluidity and heat exchange efficiency of the fluid. Utility Model Content

[0005] In order to solve the above technical problems, the present application provides a liquid cooling plate. The technical solution in the present application is described below:

[0006] A liquid cooling plate, comprising:

[0007] A plate body and a water inlet groove, a water outlet groove and a main flow channel arranged on the plate body, the main flow channel is evenly arranged with a diversion unit, the diversion unit includes a first diversion structure and a second diversion structure, the first diversion structure includes at least two separating protrusions, the two separating protrusions divide the main flow channel into at least three diversion channels, and the second diversion structure includes a circular protrusion.

[0008] Optionally, the raised portion in the first diversion structure includes a circular protrusion and two waist-shaped protrusions, and the second diversion structure includes a circular protrusion. The two waist-shaped protrusions are arranged on both sides of the circular protrusion and divide the main channel into four diversion channels. The second diversion structure includes a circular protrusion.

[0009] Optionally, the second flow-dividing structure is composed of two circular protrusions, and divides the main flow channel into three flow-dividing channels.

[0010] Optionally, the main flow channel is a "snake-shaped" flow channel on the plate body.

[0011] Optionally, on the main channel, the diversion units are arranged in a single row.

[0012] Optionally, a circular protrusion is provided at the turning point of the main flow channel.

[0013] Optionally, the water outlet and the water inlet are located on the same side of the plate body.

[0014] Optionally, a load-bearing groove is provided on the plate body, and the load-bearing groove is located between the water inlet and the water outlet.

[0015] Optionally, an upper cover plate is further included, and the upper cover plate covers the main flow channel to form a closed flow channel.

[0016] Optionally, a water inlet and a water outlet are provided on the upper cover plate, the water inlet is connected to the water inlet trough, and the water outlet is connected to the water outlet trough.

[0017] Optionally, reinforcing ribs are provided on the upper cover plate.

[0018] Optionally, the upper cover plate and the plate body are both made of aluminum alloy, and the upper cover plate and the plate body are welded by flame brazing or vacuum brazing.

[0019] It can be seen from the above technical solutions that this application has the following advantages:

[0020] 1. By setting up the water inlet trough, water outlet trough and main channel, the liquid cooling medium can be effectively circulated inside the liquid cooling plate to improve the cooling efficiency.

[0021] 2. The setting of the protrusions will increase the resistance of the fluid during the flow process, thereby extending the fluid residence time and enhancing the cooling effect.

[0022] 3. Due to the design of the diversion unit, the contact area between the liquid cooling medium and the liquid cooling plate is increased, thereby enhancing the heat transfer effect and improving the cooling efficiency.

[0023] 4. The core reason for fluid flow is the pressure difference between the two ends of the flow, flowing from the high pressure area to the low pressure area. This pressure difference drives the flow of liquid cooling medium in the flow channel.

[0024] 5. In the present application, multiple protrusions are used to separate the main channel into multiple paths. Such a design is conducive to uniform flow distribution and enables the fluid to follow a predetermined path during the flow process.

[0025] 6. During the flow of fluid, the circular protrusion in the design plays a role in preventing backflow. When the liquid flows to the circular protrusion at the back, if centrifugal reflux occurs on the path, the liquid on other paths will exert pressure, forcing the flow to continue to flow forward, preventing the occurrence of backflow.

[0026] 7. Since the liquid cooling medium can only flow forward after entering the flow channel and will be subject to more pressure when flowing in the reverse direction, there is no local heat accumulation caused by the dead zone of fluid flow. This can ensure the improvement of cooling efficiency and avoid possible heat accumulation problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of an embodiment of the liquid cooling plate provided in this application;

[0028] Figure 2 This is a schematic structural diagram of another embodiment of the liquid cooling plate provided in this application;

[0029] Figure 3 A line graph comparing the flow resistance of the liquid cooling plate provided in the present application with the liquid cooling structure in the prior art;

[0030] Figure 4 This is the temperature field distribution diagram in the main channel after using the liquid cooling plate in this application;

[0031] Figure 5 A battery temperature comparison curve diagram of an energy storage unit using the liquid cooling plate of the present application and the liquid cooling plate of the prior art. DETAILED DESCRIPTION

[0032] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only used to illustrate the relative positional relationships between the various components or components, and do not particularly limit the specific installation orientations of the various components or components.

[0033] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0034] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In addition, the structures, proportions, sizes, etc. drawn in the drawings in the present application are only used to match the contents disclosed in the specification for the technical personnel in this field to understand and read, and are not used to limit the restrictive conditions under which the present application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present application without affecting the effects and purposes that can be achieved by the present application.

[0036] The following will be combined with the drawings in this application to clearly and completely describe the technical solutions in this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] See also Figure 1 The present application first provides an embodiment of a liquid cooling plate, which includes:

[0038] A plate body 01 and an inlet groove 02, an outlet groove 03 and a main channel 03 arranged on the plate body 01. The main channel 04 is evenly arranged with a diversion unit 05. The diversion unit 05 includes a first diversion structure 051 and a second diversion structure 052. The first diversion structure 051 includes at least two separating protrusions. The two separating protrusions divide the main channel into at least three diversion channels. The second diversion structure includes a circular protrusion 001.

[0039] In this embodiment, an embodiment of a liquid cooling plate is first provided. In this embodiment, the first diversion structure 051 includes at least two separated protrusions. The separated protrusions refer to two protrusions separated and having a certain gap, so that the liquid can pass through the middle, thereby dividing the main channel into at least three diversion channels. In other embodiments, there may be more protrusions, and the shapes of the protrusions here may be various, such as round, waist-shaped, teardrop-shaped, or a combination of different shapes, etc., which are not specifically limited. The second diversion structure includes at least one protrusion, and the protrusion in the second diversion structure can also be round or other shapes, which is used to divide the main channel into at least two diversion channels.

[0040] In this embodiment, a plurality of protrusions are used to divide the main flow channel into a plurality of paths. Such a design is conducive to uniform flow distribution and enables the fluid to follow a predetermined path during the flow process.

[0041] In this embodiment, the circular protrusions in the design play a role in preventing backflow during the flow of fluid. When the liquid flows to the circular protrusion at the back, if centrifugal reflux occurs on the path, the liquid on other paths will exert pressure, forcing the flow to continue to flow forward, thereby preventing the occurrence of backflow.

[0042] In this embodiment, since the liquid cooling medium can only flow forward after entering the flow channel and will be subject to more pressure when flowing backward, there is no local heat accumulation caused by the dead zone of fluid flow. This can ensure the improvement of cooling efficiency and avoid possible heat accumulation problems.

[0043] See also Figure 1 as well as Figure 2 The present application further provides an embodiment of a liquid cooling plate, which is described in detail below. The embodiment includes:

[0044] A plate body 01 and an inlet groove 02, an outlet groove 03 and a main flow channel 04 arranged on the plate body 01. The main flow channel 04 is evenly arranged with a diversion unit 05. The diversion unit 05 includes a first diversion structure 051 and a second diversion structure 052. The first diversion structure 051 includes a circular protrusion 001 and two waist-shaped protrusions 002. The two waist-shaped protrusions 002 are arranged on both sides of the circular protrusion 001 and divide the main flow channel 04 into 4 diversion channels. The second diversion structure 052 includes a circular protrusion 001.

[0045] This embodiment provides a specific structure of a liquid cooling plate, including the following main components:

[0046] Plate body 01: The main part of the liquid cooling plate, made of metal material, used to support and fix other components of the liquid cooling plate.

[0047] Inlet trough 02 and outlet trough 03: Located at one end of the liquid cooling plate, they are used to introduce and discharge the liquid cooling medium. The inlet trough 02 is used to introduce the liquid cooling medium into the main channel 04, while the outlet trough 03 is used to discharge the liquid cooling medium that has completed the heat exchange.

[0048] Main channel 04: a channel located on the plate body 01, used for the liquid cooling medium to flow inside the liquid cooling plate. Dividing units 05 are evenly arranged on the main channel 04, and these diverting units 05 are used to control and guide the flow of the liquid cooling medium.

[0049] Dividing unit 05: Dividing unit 05 is a series of structures on main channel 04, used to divert and guide the fluid to different paths. Among them, the first diverting structure 051 includes a circular protrusion 001 and two waist-shaped protrusions 002, which divide the main channel 04 into four diverting channels, and each diverting channel has a waist-shaped protrusion 002 on both sides of the circular protrusion 001. The second diverting structure 052 includes a circular protrusion 001, which is used to further guide and divert the fluid.

[0050] By providing the water inlet groove 02, the water outlet groove 03 and the main channel 04, the liquid cooling medium can form an effective circulation inside the liquid cooling plate, thereby improving the cooling efficiency.

[0051] The provision of the circular protrusion 001 and the waist-shaped protrusion 002 increases the resistance of the fluid during the flow process and prolongs the fluid residence time.

[0052] The design of the split unit 05 increases the contact area between the liquid cooling medium and the liquid cooling plate, optimizes the heat transfer efficiency, and improves the cooling efficiency.

[0053] The fluid flow is driven by the pressure difference at both ends of the flow, flowing from the high-pressure area to the low-pressure area, ensuring the flow of the liquid cooling medium in the flow channel.

[0054] The design of double waist-shaped protrusions 002 plus a single circular protrusion 001 is used to separate the main channel 04 into four paths, which is conducive to the uniform diversion of the liquid cooling medium and ensures that the fluid follows a predetermined path during the flow process.

[0055] The double circular protrusions 001 in the design prevent the occurrence of backflow, ensure the directionality of the fluid during the flow process, and improve the flow stability and cooling effect.

[0056] Since the liquid cooling medium can only flow in the forward direction after entering the flow channel and is subject to more pressure when flowing in the reverse direction, there is no dead zone for fluid flow, which avoids the problem of local heat accumulation and ensures improved cooling efficiency.

[0057] In order to better illustrate the effect of the structure of the present application, the present application provides 3 drawings, see Figure 3 , Figure 3 A line graph comparing the flow resistance of the liquid cooling plate provided in this application with the liquid cooling structure in the prior art, through Figure 3 It can be seen that after using the structure of the liquid cooling plate of the present application, as the flow rate of the coolant gradually increases, the flow resistance of the structure of the present application is significantly lower, and the increase is smaller, which fully demonstrates that the liquid cooling plate provided by the present application has superior practical effect in overcoming the problem of coolant flow resistance.

[0058] See also Figure 4 , Figure 4The temperature field distribution diagram in the main channel after using the liquid cooling plate in this application is shown in FIG. Figure 4 It can be seen from the displayed information that the coolant temperature at the water inlet tank is 17.2 degrees Celsius, the temperature of the coolant gradually increases in the main channel, and the coolant temperature reaches 20.5 degrees Celsius when reaching the water outlet tank, which fully proves that the liquid cooling plate with this structure has excellent heat exchange effect.

[0059] See also Figure 5 , Figure 5 In practice, a battery temperature comparison curve of the energy storage unit using the liquid cooling plate in the present application and the liquid cooling plate in the prior art is provided. In the figure, after using the liquid cooling plate in the present application, the battery temperature drops by a much greater amplitude and speed than the liquid cooling plate in the prior art, and the battery temperature rises at a lower height. When using the liquid cooling plate in the prior art, the lowest battery temperature after heat exchange is 44.9621 degrees Celsius, while the lowest battery temperature after using the liquid cooling plate provided by the present application is 42.592 degrees Celsius, which means that the liquid cooling plate in the present application has a stronger cooling capacity for the energy storage unit and a superior heat exchange effect.

[0060] In an optional embodiment, the second flow-dividing structure 052 is composed of two circular protrusions 001 and divides the main flow channel 04 into three flow-dividing channels.

[0061] In this optional embodiment, the second diversion structure 052 is composed of two circular protrusions 001, which divide the main channel 04 into three diversion channels. This design further diverts the liquid cooling medium. This design helps to enhance the cooling effect, improve the heat transfer efficiency, and ensure that the fluid follows a predetermined path during the flow.

[0062] In an optional embodiment, the main flow channel 04 on the plate body 01 is a "snake-shaped" flow channel.

[0063] In this optional embodiment, the main channel 04 presents a serpentine flow channel design on the plate body 01 of the liquid cooling plate. This design arranges the main channel 04 in a serpentine shape, which is different from the traditional straight or curved form. The setting of the serpentine flow channel will make the flow path of the liquid cooling medium inside the liquid cooling plate more tortuous and complex.

[0064] In this embodiment, the serpentine flow channel design increases the surface area of ​​the fluid in contact with the liquid cooling plate, thereby enhancing the heat transfer efficiency and improving the cooling effect.

[0065] The serpentine flow channel design makes the flow path of the fluid inside the liquid cooling plate more tortuous, which is beneficial to increase the residence time of the fluid, thereby further enhancing the cooling effect.

[0066] By setting the serpentine flow channel, the liquid cooling medium can flow more evenly inside the liquid cooling plate, avoiding the situation where the local temperature is too high or too low, and improving the uniformity of cooling.

[0067] In an optional embodiment, on the main channel 04, the diversion units 05 are arranged in a single row.

[0068] In this embodiment, the diversion units 05 are arranged in a single row on the main channel 04, which means that on the main channel 04, along the direction of liquid flow, there is only one row of diversion units 05. The diversion units 05 arranged in a single row can specifically adjust the fluid flow direction, making the fluid more orderly during the flow process, which is conducive to optimizing the cooling effect.

[0069] In an optional embodiment, a circular protrusion 001 is provided at the turning point of the main channel 04 .

[0070] In this optional embodiment, in the design of the main channel 04 of the liquid cooling plate, a circular protrusion 001 is provided at the bend. This design is intended to optimize the flow of the fluid at the bend to improve the cooling efficiency and performance stability.

[0071] At the bend of the main channel 04 of the liquid cooling plate, where the direction of the fluid flow changes, circular protrusions 001 are provided. These protrusions 1 are located in the middle of the main channel 04 to change the direction of the fluid flow or slow down the flow rate.

[0072] The provision of the circular protrusion 001 can make the fluid flow more smoothly at the bend, reduce the eddy current and turbulence of the fluid, thereby reducing energy loss and optimizing the flow characteristics of the fluid.

[0073] The circular protrusion 001 at the bend can reduce the pressure loss during the flow of the fluid, so that the fluid can pass through the liquid cooling plate more effectively, thereby improving the overall cooling efficiency.

[0074] The provision of the circular protrusion 001 helps to maintain the stability of the fluid flow, avoids the adverse effects of turbulence and eddy currents generated at the bends on the cooling effect, and ensures the uniform flow of the fluid throughout the liquid cooling plate.

[0075] In an optional embodiment, the water outlet 072 and the water inlet 071 are located on the same side of the plate body 01 .

[0076] In this embodiment, the water outlet 072 and the water inlet 071 of the liquid cooling plate are arranged on the same side of the plate body 01. The water outlet 072 and the water inlet 071 are located on the same side, which can simplify the pipeline layout of the liquid cooling system, reduce the length and complexity of the pipeline, and reduce the installation and maintenance costs of the system. The centralized arrangement of the water outlet 072 and the water inlet 071 on the same side facilitates the connection between the liquid cooling plate and the external liquid cooling system, reduces the number and length of the connecting pipes, and improves the convenience and reliability of the connection. The water outlet 072 and the water inlet 071 are located on the same side, which will optimize the flow path of the liquid cooling medium inside the liquid cooling plate, reduce the resistance of the fluid flow, and improve the cooling efficiency. The water outlet 072 and the water inlet 071 are located on the same side, which can also reduce the bends and turns in the pipeline system, reduce the resistance during the fluid flow process, and improve the efficiency of the entire liquid cooling system. The water outlet 072 and the water inlet 071 are located on the same side, which can more effectively adjust the flow path of the liquid cooling medium inside the liquid cooling plate, thereby improving the heat dissipation efficiency and optimizing the heat dissipation performance of the system.

[0077] In an optional embodiment, a load-bearing groove 06 is provided on the plate body 01 , and the load-bearing groove 06 is located between the water inlet 071 and the water outlet 072 .

[0078] In this optional embodiment, load-bearing grooves 06 are provided on the plate body 01 of the liquid cooling plate, and these load-bearing grooves 06 are located between the water inlet 071 and the water outlet 072 .

[0079] The provision of the load-bearing groove 06 can increase the structural bearing capacity of the liquid cooling plate, enabling it to better withstand external loads and pressures, and improving the stability and reliability of the liquid cooling plate. The provision of the load-bearing groove 06 can reduce the deformation and deflection of the plate body 01 under load, ensuring the flatness and shape stability of the liquid cooling plate, thereby improving the heat dissipation effect and performance stability. The provision of the load-bearing groove 06 can increase the structural strength of the liquid cooling plate without affecting the heat dissipation effect, thereby simplifying the design of the external support structure and reducing the complexity and cost of the overall system. The provision of the load-bearing groove 06 can be directly processed and formed during the production process of the liquid cooling plate, thereby improving production efficiency and reducing production costs.

[0080] In an optional embodiment, it further includes an upper cover plate 07, wherein the upper cover plate 07 covers the main flow channel 04 to form a closed flow channel.

[0081] In this optional embodiment, the liquid cooling plate further includes an upper cover plate 07, which covers the main channel 04 to form a closed channel. The setting of the upper cover plate 07 forms a closed channel, which can effectively protect the flow of the fluid in the main channel 04 from the influence of the external environment, ensuring the stability and reliability of the fluid flow. The closed channel can increase the surface area of ​​the fluid in contact with the liquid cooling plate, optimize the heat transfer efficiency, and improve the cooling effect of the liquid cooling plate.

[0082] In an optional embodiment, a water inlet 071 and a water outlet 072 are provided on the upper cover plate 07 , the water inlet 071 is communicated with the water inlet trough 02 , and the water outlet 072 is communicated with the water outlet trough 03 .

[0083] In this optional embodiment, a water inlet 071 and a water outlet 072 are provided on the upper cover plate 07, and these inlets are connected to the water inlet groove 02 and the water outlet groove 03 of the liquid cooling plate.

[0084] In this embodiment, the water inlet 071 and the water outlet 072 provided on the upper cover plate 07 enable the liquid cooling medium to conveniently enter and leave the liquid cooling plate, thereby simplifying the pipeline layout and connection of the liquid cooling system.

[0085] The water inlet 071 and the water outlet 072 are connected with the water inlet groove 02 and the water outlet groove 03, which ensures the flow continuity of the liquid cooling medium inside the liquid cooling plate and reduces the resistance and pressure loss during the fluid flow process.

[0086] The water inlet 071 and the water outlet 072 are connected to the water inlet trough 02 and the water outlet trough 03 of the liquid cooling plate, which can effectively reduce the risk of leakage of the liquid cooling medium and improve the safety and stability of the liquid cooling system. The setting of the water inlet 071 and the water outlet 072 makes the connection between the liquid cooling plate and the external liquid cooling system simpler and more direct, reducing the design complexity and cost of the liquid cooling system.

[0087] In an optional embodiment, a reinforcing rib 073 is provided on the upper cover plate 07 .

[0088] In this optional embodiment, reinforcing ribs 073 are provided on the upper cover plate 07. The reinforcing ribs 073 are an additional structure added to the structural member to increase the strength and rigidity of the structure. The provision of the reinforcing ribs 073 can effectively increase the structural strength of the upper cover plate 07, so that it can better withstand external loads and pressures, and improve the overall stability and reliability of the liquid cooling plate. The provision of the reinforcing ribs 073 can improve the rigidity of the upper cover plate 07, reduce deformation and deflection under load, and ensure the flatness and shape stability of the liquid cooling plate. The provision of the reinforcing ribs 073 can improve the durability of the liquid cooling plate, extend its service life, reduce the frequency of maintenance and replacement, and reduce maintenance costs.

[0089] In an optional embodiment, the upper cover plate 07 and the plate body 01 are both made of aluminum alloy, and the upper cover plate 07 and the plate body 01 are welded by flame brazing or vacuum brazing.

[0090] In this optional embodiment, both the upper cover plate 07 and the plate body 01 are made of aluminum alloy. In order to connect the upper cover plate 07 to the plate body 01, flame brazing or vacuum brazing is used for welding. Aluminum alloy has good thermal conductivity and strength, is suitable for the manufacture of liquid cooling plates, and can effectively improve the heat dissipation efficiency and performance stability of liquid cooling plates. Flame brazing or vacuum brazing can ensure that the welding strength between the upper cover plate 07 and the plate body 01 is high, and the welding joint is firm and reliable, thereby improving the overall stability and reliability of the liquid cooling plate.

[0091] The following is an example of the welding process using these two processes:

[0092] Flame brazing process:

[0093] First, prepare the upper cover plate 07 and plate body 01 to be welded, ensure that their surfaces are clean, and perform necessary docking and clamping.

[0094] Preheating: Apply appropriate amount of preheating to the welding area to improve the plasticity of the material and the welding effect.

[0095] Apply flux: Apply flux to the joint surfaces to be welded. The flux helps to improve the quality and efficiency of welding and protect the welded joints from oxidation.

[0096] Light the Flame: Using an oxy-acetylene flame or other suitable flame source, heat the weld area to the appropriate temperature.

[0097] Brazing: When the welding area reaches the appropriate temperature, solder or brazing material is applied to the joint surfaces. The heat will melt the solder and fill the gap between the joint surfaces, forming a strong connection.

[0098] After welding, allow the welded area to cool naturally, then clean the welded area to remove excess flux and welding residue.

[0099] Vacuum brazing process:

[0100] Place the upper cover plate 07 and the plate body 01 in a vacuum chamber to create a low-pressure, oxygen-free environment.

[0101] Preheating and cleaning: Preheat the upper cover plate 07 and the plate body 01 in a vacuum environment and ensure that the surface is clean in order to obtain good welding quality.

[0102] Brazing assembly: Place an appropriate amount of brazing material, usually aluminum alloy, on the joint surfaces to be welded.

[0103] Vacuum welding: In a vacuum environment, the brazing material and the joint surface are heated to melt the brazing material and fill the gap between the joint surfaces. Due to the vacuum environment, almost no oxidation reaction occurs during the welding process.

[0104] Cooling and cleaning: After welding, allow the weld to cool gradually, then clean the weld area to remove excess flux and welding residue.

[0105] Flame brazing or vacuum brazing is a commonly used metal connection method, which can efficiently achieve the connection between the upper cover plate 07 and the plate body 01 during the manufacturing process of the liquid cooling plate, simplifying the manufacturing process and improving production efficiency. Flame brazing or vacuum brazing can achieve seamless connection between the upper cover plate 07 and the plate body 01, reducing additional connectors and interfaces, reducing material waste, and improving the manufacturing cost-effectiveness of the liquid cooling plate. Flame brazing or vacuum brazing can make the welding joint between the upper cover plate 07 and the plate body 01 smooth and flat, improving the appearance quality and overall aesthetics of the liquid cooling plate.

[0106] It should be noted that the above description of the disclosed embodiments enables professionals and technicians in the field to implement or use the present application. Various modifications to these embodiments will be apparent to professionals and technicians in the field, and the general principles defined herein can be implemented in other embodiments without departing from the scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A liquid cooling plate, characterized in that: include: A plate body and a water inlet groove, a water outlet groove and a main flow channel arranged on the plate body, the main flow channel is evenly arranged with diversion units, the diversion unit includes a first diversion structure and a second diversion structure, the first diversion structure includes at least two separating protrusions, the two separating protrusions divide the main flow channel into at least three diversion channels, and the second diversion structure includes at least one protrusion.

2. The liquid cooling plate according to claim 1, characterized in that: The protrusion in the first diversion structure includes a circular protrusion and two waist-shaped protrusions. The two waist-shaped protrusions are arranged on both sides of the circular protrusion and divide the main channel into four diversion channels. The second diversion structure includes a circular protrusion.

3. The liquid cooling plate according to claim 1, characterized in that: The second flow-dividing structure is composed of two circular protrusions and divides the main flow channel into three flow-dividing channels.

4. The liquid cooling plate according to claim 1, characterized in that: The main flow channel is a "snake-shaped" flow channel on the plate body.

5. The liquid cooling plate according to claim 1, characterized in that: On the main flow channel, the flow distribution units are arranged in a single row.

6. The liquid cooling plate according to claim 4, characterized in that: A circular protrusion is arranged at the turning point of the main flow channel.

7. The liquid cooling plate according to claim 1, characterized in that: The plate body is provided with a load-bearing groove, and the load-bearing groove is located between the water inlet groove and the water outlet groove.

8. The liquid cooling plate according to claim 1, characterized in that: It also includes an upper cover plate, which covers the main flow channel to form a closed flow channel.

9. The liquid cooling plate according to claim 8, characterized in that: The upper cover plate is provided with a water inlet and a water outlet, the water inlet is communicated with the water inlet trough, and the water outlet is communicated with the water outlet trough.

10. The liquid cooling plate according to claim 8, characterized in that: The upper cover plate and the plate body are both made of aluminum alloy, and the upper cover plate and the plate body are welded by flame brazing or vacuum brazing.

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