Aluminum-based composite material liquid cooling plate convenient for diffusion welding and preparation method thereof

Abstract

The present invention relates to the technical field of aluminum-based composite material liquid cooling plates, and in particular to an aluminum-based composite material liquid cooling plate that is convenient for diffusion welding and a preparation method thereof. The aluminum-based composite material liquid cooling plate that is convenient for diffusion welding comprises a base plate, an aluminum-based composite material plate, a surface coating layer, a connecting support structure and a flow channel structure; an aluminum-based composite material plate is installed on the upper end of the base plate, a surface coating layer that can improve corrosion resistance and diffusion welding quality is coated on the outer side of the aluminum-based composite material plate, a connecting support structure that is convenient for connection with other components is installed on the outer side of the base plate, and a flow channel structure for optimizing cooling effect is provided inside the aluminum-based composite material plate; the present invention utilizes the surface coating layer to improve corrosion resistance and diffusion welding quality, and then utilizes flow channel structures of different shapes to improve cooling effect according to use needs, and the base plate can be conveniently connected to other components through the connecting support structure.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum-based composite material liquid cooling plates, and in particular to an aluminum-based composite material liquid cooling plate that is convenient for diffusion welding and a preparation method thereof. Background Art

[0002] Aluminum-based composite liquid cooling plates are made of multiple layers of materials, in which the core material is mostly aluminum-manganese alloy, which has good strength, corrosion resistance and processing performance; the composite layer may use other grades of aluminum alloy to improve the welding performance of the overall material or increase heat conduction efficiency.

[0003] Aluminum-based composite materials have low density, good heat dissipation performance, and high thermal conductivity. They can effectively transfer heat from the heat source to the cooling medium to improve heat dissipation efficiency. They have good processing performance and are easy to process and shape. They can be made into complex shapes and structures through various processing methods to meet different design requirements. They have a small linear expansion coefficient, which is equivalent to the linear expansion coefficient of the chip. Aluminum-based composite materials are suitable for liquid cooling plates, but it is difficult to obtain good diffusion welding quality.

[0004] Therefore, although the above-mentioned aluminum-based composite material liquid cooling plate has excellent properties suitable for use in liquid cooling plates, due to the influence of its material properties and the complexity of the welding process, it is still difficult to obtain good diffusion welding quality and the corrosion resistance cannot be guaranteed. An aluminum-based composite material liquid cooling plate can be designed that can solve the problems of difficult diffusion welding and poor corrosion resistance and facilitate diffusion welding. Summary of the invention

[0005] In order to overcome the problem that although aluminum-based composite material liquid cooling plates have excellent properties suitable for liquid cooling plates, due to the influence of their material properties and the complexity of the welding process, it is still difficult to obtain good diffusion welding quality and the corrosion resistance cannot be guaranteed.

[0006] The technical solution of the present invention is: an aluminum-based composite material liquid cooling plate that is convenient for diffusion welding, comprising a base plate, an aluminum-based composite material plate, a surface coating layer, a connection support structure and a flow channel structure; an aluminum-based composite material plate is installed at the upper end of the base plate, the outer side of the aluminum-based composite material plate is coated with a surface coating layer that can improve corrosion resistance and diffusion welding quality, a connection support structure that is convenient for connection with other components is installed on the outer side of the base plate, a flow channel structure for optimizing the cooling effect is opened inside the aluminum-based composite material plate, and the aluminum-based composite material plate comprises a bottom aluminum plate, a composite core material, a sealing partition and a surface aluminum plate; a bottom aluminum plate is installed at the upper end of the base plate, a composite core material with a flow channel structure opened inside is installed on the upper end of the bottom aluminum plate, a sealing partition is installed at the upper end of the composite core material, and a surface aluminum plate is installed at the upper end of the sealing partition.

[0007] Preferably, the surface coating layer can be used to improve the corrosion resistance and diffusion welding quality, and then the flow channel structure of different shapes can be used to enhance the cooling effect according to the needs of use. The connecting support structure can make the base plate easy to connect with other components, and the sealing partition can ensure the sealing of the connection.

[0008] Preferably, the coating material of the surface coating layer can be selected from any one of nickel, zinc-nickel alloy, zinc-iron alloy and nickel-phosphorus alloy.

[0009] Preferably, the connecting support structure includes an oblique supporting bottom bar, an anti-slip pressure-bearing mounting lower plate, an internal pressure-bearing support plate, a positioning mounting side plate, mounting holes and a shock-absorbing connecting plate; the oblique supporting bottom bar is fixedly connected on both sides of the bottom plate, an anti-slip pressure-bearing mounting lower plate is installed on the inner bottom end of the oblique supporting bottom bar, and an internal pressure-bearing support plate is installed on the upper end of the anti-slip pressure-bearing mounting lower plate, and the number and shape of the internal pressure-bearing support plates can be adjusted and set accordingly according to usage requirements.

[0010] Preferably, two sets of positioning and mounting side panels are installed at the other two ends of the outer side of the bottom plate, mounting holes are opened through the inside of the positioning and mounting side panels, and shock-absorbing connecting plates are installed on the inner sides of the two sets of positioning and mounting side panels, and the specifications of the mounting holes can be adjusted.

[0011] Preferably, the flow channel structure includes a cooling cavity, a special-shaped guide block, a reinforced guide strut, a first inlet and a first outlet; a cooling cavity is opened inside the composite core material, and a plurality of groups of special-shaped guide blocks of different shapes are installed inside the cooling cavity, and two groups of reinforced guide struts are installed inside the cooling cavity. A first inlet is opened at the front end of one side of the composite core material, and a first outlet is opened at the rear end of one side of the composite core material. The first inlet and the first outlet are opened on the same side. The special-shaped guide blocks can improve the overall cooling effect, and the reinforced guide struts can play an auxiliary pressure-bearing support role.

[0012] Preferably, the flow channel structure includes a serpentine flow groove, a second inlet and a second outlet; a serpentine flow groove is opened inside the composite core material, a second inlet is opened at the front end of one side of the composite core material, and a second outlet is opened at the rear end of the other side of the composite core material. The positions of the second inlet and the second outlet can be respectively opened on both sides of the composite core material.

[0013] A method for preparing an aluminum-based composite material liquid cooling plate that is easy to diffuse weld, comprising the aluminum-based composite material liquid cooling plate that is easy to diffuse weld as described above, and the steps are as follows:

[0014] Step 1: First, select the aluminum plate that meets the requirements as the bottom material and the aluminum-based composite material plate, and process the bottom aluminum plate, composite core material, sealing partition and surface aluminum plate through a cutting machine. The shape is also cut and adjusted accordingly according to the needs of use;

[0015] Step 2: Select any one of nickel, zinc-nickel alloy, zinc-iron alloy and nickel-phosphorus alloy as the coating material and use a sprayer to evenly coat the upper surface coating layer on the outer surface of the aluminum-based composite material plate;

[0016] Step 3: Use a laser cutting machine to cut out the flow channel structure inside the composite core material, and then assemble the bottom aluminum plate, composite core material, sealing partition and surface aluminum plate in sequence;

[0017] Step 4: Install the oblique support bottom strips, anti-slip pressure-bearing installation lower plate and internal pressure support plate on both sides of the bottom plate. At the same time, install the positioning installation side plates and shock-absorbing connecting plates on the other two sides of the bottom plate, and use a drill bit to drill the installation holes.

[0018] Preferably, the cutting machine in step one can be any one of a CNC cutting machine, a laser cutting machine or a water jet cutting machine.

[0019] Preferably, in step 2, the spraying pressure of the sprayer is between 0.2-0.8 MPa, and the distance from the workpiece surface is between 120 mm and 250 mm to ensure uniform coating.

[0020] Beneficial effects of the present invention:

[0021] 1. The surface coating layer can improve the corrosion resistance and diffusion welding quality. Then, the flow channel structure of different shapes can be used to improve the cooling effect according to the use needs. The connection support structure can make the bottom plate convenient for connection with other components. At the same time, the sealing partition can ensure the sealing of the connection. Compared with the traditional aluminum-based composite material, which is suitable for liquid cooling plates but difficult to obtain good diffusion welding quality, the aluminum-based composite liquid cooling plate can solve the problems of difficult diffusion welding and poor corrosion resistance.

[0022] 2. The oblique support bottom bar, the anti-slip pressure-bearing installation lower plate and the internal pressure support plate can play a role in stable protection support. At the same time, the use of shock-absorbing connecting plates can achieve the purpose of efficient shock-absorbing protection, so that the positioning installation side panels can achieve the effect of efficient and stable installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Shown is a schematic diagram of the three-dimensional structure of an aluminum-based composite material liquid cooling plate that is easy to diffuse welded according to the present invention;

[0024] Figure 2 Shown is a schematic diagram of the three-dimensional structure of a composite core material in an aluminum-based composite material liquid cooling plate that is easy to diffuse welded according to the present invention;

[0025] Figure 3 Shown is a schematic diagram of the three-dimensional structure of a support bottom bar in an aluminum-based composite material liquid cooling plate that is easy to diffuse welded according to the present invention;

[0026] Figure 4 The invention shows an aluminum-based composite liquid cooling plate that is easy to diffuse weld. Figure 3 The enlarged structural diagram at A in the middle;

[0027] Figure 5 Shown is a schematic diagram of the three-dimensional structure of a special-shaped guide block in an aluminum-based composite material liquid cooling plate that is easy to diffuse welded according to the present invention;

[0028] Figure 6 Shown is a schematic diagram of the three-dimensional structure of a serpentine flow groove in an aluminum-based composite material liquid cooling plate that is easy to diffuse welded according to the present invention.

[0029] Explanation of the reference numerals: 1. bottom plate; 2. aluminum-based composite material plate; 3. surface coating layer; 201. bottom aluminum plate; 202. composite core material; 203. sealing partition; 204. surface aluminum plate; 401. oblique supporting bottom strip; 402. anti-slip pressure-bearing mounting lower plate; 403. internal pressure-shaping support plate; 404. positioning mounting side plate; 405. mounting hole; 406. shock-absorbing connecting plate; 501. cooling cavity; 502. special-shaped guide block; 503. reinforcement guide support rod; 504. first inlet; 505. first outlet; 506. serpentine flow groove; 507. second inlet; 508. second outlet. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] See also Figure 1-Figure 6 The present invention provides an embodiment: an aluminum-based composite material liquid cooling plate that is convenient for diffusion welding, comprising a bottom plate 1, an aluminum-based composite material plate 2, a surface coating layer 3, a connection support structure and a flow channel structure; the aluminum-based composite material plate 2 is installed on the upper end of the bottom plate 1, and the outer side of the aluminum-based composite material plate 2 is coated with a surface coating layer 3 that can improve corrosion resistance and diffusion welding quality. A connection support structure that is convenient for connection with other components is installed on the outer side of the bottom plate 1, and a flow channel structure for optimizing the cooling effect is opened inside the aluminum-based composite material plate 2. The aluminum-based composite material plate 2 comprises a bottom aluminum plate 201, a composite core material 202, and a sealing partition 20 3 and a surface aluminum plate 204; a bottom aluminum plate 201 is installed on the upper end of the bottom plate 1, a composite core material 202 with an internal flow channel structure is installed on the upper end of the bottom aluminum plate 201, a sealing baffle 203 is installed on the upper end of the composite core material 202, and a surface aluminum plate 204 is installed on the upper end of the sealing baffle 203. The surface coating layer 3 can improve the corrosion resistance and diffusion welding quality, and then the flow channel structure of different shapes can be used to enhance the cooling effect according to the needs of use. The connection support structure can make the bottom plate 1 convenient for connection with other components, and the sealing baffle 203 can ensure the sealing of the connection.

[0032] Example 1: Please refer to Figure 3-Figure 5 In this embodiment, the coating material of the surface coating layer 3 can be selected from any one of nickel, zinc-nickel alloy, zinc-iron alloy and nickel-phosphorus alloy. The connecting support structure includes an oblique supporting bottom strip 401, an anti-slip pressure-bearing mounting lower plate 402, an internal pressure-bearing supporting plate 403, a positioning mounting side plate 404, a mounting hole 405 and a shock-absorbing connecting plate 406; both sides of the bottom plate 1 are fixedly connected with oblique supporting bottom strips 401, the inner bottom end of the oblique supporting bottom strip 401 is installed with an anti-slip pressure-bearing mounting lower plate 402, and the upper end of the anti-slip pressure-bearing mounting lower plate 402 is installed with an internal pressure-bearing supporting plate 403. The number and shape of the internal pressure-bearing supporting plate 403 can be adjusted and set accordingly according to the needs of use. Two sets of positioning mounting side plates 404 are installed at the other two ends of the outer side of the bottom plate 1, and the positioning mounting side plates 404 are penetrated with mounting holes 405. The two sets of positioning mounting A shock-absorbing connecting plate 406 is installed on the inner side of the side plate 404, and the specifications of the mounting hole 405 can be adjusted. The flow channel structure includes a cooling cavity 501, a special-shaped guide block 502, a reinforced guide strut 503, a first inlet 504 and a first outlet 505; a cooling cavity 501 is opened inside the composite core material 202, and a plurality of groups of special-shaped guide blocks 502 of different shapes are installed inside the cooling cavity 501, and two groups of reinforced guide struts 503 are installed inside the cooling cavity 501. A first inlet 504 is opened at the front end of one side of the composite core material 202, and a first outlet 505 is opened at the rear end of one side of the composite core material 202. The first inlet 504 and the first outlet 505 are opened on the same side. The special-shaped guide block 502 can improve the overall cooling effect, and the reinforced guide strut 503 can play an auxiliary pressure-bearing support role.

[0033] A method for preparing an aluminum-based composite material liquid cooling plate that is easy to diffuse weld, comprising the aluminum-based composite material liquid cooling plate that is easy to diffuse weld as described above, and the steps are as follows:

[0034] Step 1: First, select an aluminum plate that meets the requirements as the bottom material and an aluminum-based composite material plate, and process the bottom aluminum plate 201, the composite core material 202, the sealing partition 203 and the surface aluminum plate 204 through a cutting machine. The shapes are also cut and adjusted accordingly according to the needs of use. The cutting machine can be any one of a CNC cutting machine, a laser cutting machine or a water jet cutting machine;

[0035] Step 2: Select any one of nickel, zinc-nickel alloy, zinc-iron alloy and nickel-phosphorus alloy as the coating material, and use a sprayer to evenly coat the upper surface coating layer 3 on the outer surface of the aluminum-based composite material plate 2, the spraying pressure of the sprayer is between 0.2-0.8MPa, and the distance from the workpiece surface is between 120mm and 250mm to ensure uniform coating;

[0036] Step three: Use a laser cutting machine to cut out the cooling cavity 501 inside the composite core material 202, so that the special-shaped guide block 502, the first inlet 504 and the first outlet 505 can be formed, and at the same time, the reinforcement guide support rod 503 is installed, and then the bottom aluminum plate 201, the composite core material 202, the sealing partition 203 and the surface aluminum plate 204 are assembled together in sequence;

[0037] Step 4: Install the oblique supporting bottom strip 401, the anti-slip pressure-bearing mounting lower plate 402 and the internal pressure-supporting plate 403 on both sides of the bottom plate 1, and install the positioning mounting side plates 404 and the shock-absorbing connecting plates 406 on the other two sides of the bottom plate 1, and use a drill to drill the mounting holes 405.

[0038] Example 2: Please refer to Figure 3-Figure 4 , Figure 6 In this embodiment, the connecting support structure includes an oblique supporting bottom strip 401, an anti-skid pressure-bearing mounting lower plate 402, an internal pressure-bearing supporting plate 403, a positioning mounting side plate 404, a mounting hole 405 and a shock-absorbing connecting plate 406; both sides of the bottom plate 1 are fixedly connected with the oblique supporting bottom strip 401, the inner bottom end of the oblique supporting bottom strip 401 is installed with an anti-skid pressure-bearing mounting lower plate 402, and the upper end of the anti-skid pressure-bearing mounting lower plate 402 is installed with an internal pressure-bearing supporting plate 403. The number and shape of the internal pressure-bearing supporting plate 403 can be adjusted and set accordingly according to the needs of use, and two sets of positioning mounting side plates are installed at the other two ends of the outer side of the bottom plate 1. Plate 404, a mounting hole 405 is opened through the inside of the positioning and mounting side plate 404, a shock-absorbing connecting plate 406 is installed on the inner side of the two sets of positioning and mounting side plates 404, the specifications of the mounting hole 405 can be adjusted, and the flow channel structure includes a serpentine flow groove 506, a second inlet 507 and a second outlet 508; a serpentine flow groove 506 is opened inside the composite core material 202, a second inlet 507 is opened at the front end of one side of the composite core material 202, and a second outlet 508 is opened at the rear end of the other side of the composite core material 202, and the positions of the second inlet 507 and the second outlet 508 can be respectively opened on both sides of the composite core material 202.

[0039] A method for preparing an aluminum-based composite material liquid cooling plate that is easy to diffuse weld, comprising the aluminum-based composite material liquid cooling plate that is easy to diffuse weld as described above, and the steps are as follows:

[0040] Step 1: First, select an aluminum plate that meets the requirements as the bottom material and an aluminum-based composite material plate, and process the bottom aluminum plate 201, the composite core material 202, the sealing partition 203 and the surface aluminum plate 204 through a cutting machine. The shapes are also cut and adjusted accordingly according to the needs of use. The cutting machine can be any one of a CNC cutting machine, a laser cutting machine or a water jet cutting machine;

[0041] Step 2: Select any one of nickel, zinc-nickel alloy, zinc-iron alloy and nickel-phosphorus alloy as the coating material, and use a sprayer to evenly coat the upper surface coating layer 3 on the outer surface of the aluminum-based composite material plate 2, the spraying pressure of the sprayer is between 0.2-0.8MPa, and the distance from the workpiece surface is between 120mm and 250mm to ensure uniform coating;

[0042] Step three: Use a laser cutting machine to cut out the serpentine flow groove 506, the second inlet 507 and the second outlet 508 inside the composite core material 202, and then assemble the bottom aluminum plate 201, the composite core material 202, the sealing partition 203 and the surface aluminum plate 204 in sequence;

[0043] Step 4: Install the oblique supporting bottom strip 401, the anti-slip pressure-bearing mounting lower plate 402 and the internal pressure-supporting plate 403 on both sides of the bottom plate 1, and install the positioning mounting side plates 404 and the shock-absorbing connecting plates 406 on the other two sides of the bottom plate 1, and use a drill to drill the mounting holes 405.

[0044] Through the above steps, the corrosion resistance and diffusion welding quality can be improved by setting the surface coating layer 3, and then the flow channel structure of different shapes can be used to improve the cooling effect according to the needs of use, and the base plate 1 can be conveniently connected to other components by connecting the support structure. At the same time, the sealing partition 203 can ensure the sealing of the connection, so as to solve the problem that although the aluminum-based composite material liquid cooling plate has excellent performance suitable for liquid cooling plates, it is still difficult to obtain better diffusion welding quality due to the influence of its material properties and the complexity of the welding process, and the corrosion resistance cannot be guaranteed.

[0045] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. A method for preparing an aluminum-based composite material liquid cooling plate that is easy to diffuse weld, comprising a bottom plate (1); Features: The aluminum-based composite material plate (2) is also included, along with a surface coating layer (3), a connection support structure and a flow channel structure; the aluminum-based composite material plate (2) is installed at the upper end of the bottom plate (1); the outer side of the aluminum-based composite material plate (2) is coated with a surface coating layer (3) that can improve corrosion resistance and diffusion welding quality; the outer side of the bottom plate (1) is installed with a connection support structure that is convenient for connection with other components; the aluminum-based composite material plate (2) is provided with a flow channel structure for optimizing cooling effect; the aluminum-based composite material plate (2) includes a bottom aluminum plate (201), a composite core material (202), a sealing baffle (203) and a surface aluminum plate (204); the bottom aluminum plate (201) is installed at the upper end of the bottom aluminum plate (1); the composite core material (202) having a flow channel structure provided therein is installed at the upper end of the bottom aluminum plate (201); the sealing baffle (203) is installed at the upper end of the composite core material (202); the upper end of the sealing baffle (203) A surface aluminum plate (204) is installed, and the connection support structure includes an oblique support bottom strip (401), an anti-slip pressure-bearing installation lower plate (402), an internal pressure-bearing support plate (403), a positioning installation side plate (404), a mounting hole (405) and a shock-absorbing connection plate (406); both sides of the bottom plate (1) are fixedly connected with the oblique support bottom strip (401), the inner bottom end of the oblique support bottom strip (401) is installed with an anti-slip pressure-bearing installation lower plate (402), and the upper end of the anti-slip pressure-bearing installation lower plate (402) is installed with an internal pressure-bearing support plate (403); two sets of positioning installation side plates (404) are installed at the other two ends of the outer side of the bottom plate (1), the positioning installation side plates (404) are provided with mounting holes (405) through the inside, and the shock-absorbing connection plates (406) are installed on the inner sides of the two sets of positioning installation side plates (404); the coating material of the surface coating layer (3) is selected from any one of nickel, zinc-nickel alloy, zinc-iron alloy and nickel-phosphorus alloy; The steps for preparing an aluminum-based composite liquid cooling plate that is easy to diffuse weld are as follows: Step 1: First, an aluminum plate that meets the requirements is selected as the bottom material and an aluminum-based composite material plate, and the bottom aluminum plate (201), the composite core material (202), the sealing partition (203) and the surface aluminum plate (204) are processed by a cutting machine, and the shapes are cut and adjusted accordingly according to the use requirements; Step 2: Select any one of nickel, zinc-nickel alloy, zinc-iron alloy and nickel-phosphorus alloy as the coating material and use a sprayer to evenly coat the upper surface coating layer (3) on the outer surface of the aluminum-based composite material plate (2); Step three: using a laser cutting machine to cut out the flow channel structure inside the composite core material (202), and then assembling the bottom aluminum plate (201), the composite core material (202), the sealing partition (203) and the surface aluminum plate (204) together in sequence; Step 4: Install the oblique supporting bottom strips (401), the anti-slip pressure-bearing mounting lower plate (402) and the internal pressure-shaping support plate (403) on both sides of the bottom plate (1), and install the positioning mounting side plates (404) and the shock-absorbing connecting plate (406) on the other two sides of the bottom plate (1), and use a drill bit to drill the mounting holes (405).

2. The method for preparing the aluminum-based composite liquid cooling plate that is easy to diffuse welded according to claim 1, Features: The flow channel structure comprises a cooling cavity (501), a special-shaped guide block (502), a reinforcement guide support rod (503), a first inlet (504) and a first outlet (505); a cooling cavity (501) is provided inside the composite core material (202), a plurality of groups of special-shaped guide blocks (502) of different shapes are installed inside the cooling cavity (501), two groups of reinforcement guide support rods (503) are installed inside the cooling cavity (501), a first inlet (504) is provided at the front end of one side of the composite core material (202), and a first outlet (505) is provided at the rear end of the other side of the composite core material (202).

3. The method for preparing the aluminum-based composite liquid cooling plate that is easy to diffuse welded according to claim 1, Features: The flow channel structure comprises a serpentine flow groove (506), a second inlet (507) and a second outlet (508); a serpentine flow groove (506) is provided inside the composite core material (202), a second inlet (507) is provided at the front end of one side of the composite core material (202), and a second outlet (508) is provided at the rear end of the other side of the composite core material (202).

4. The method for preparing an aluminum-based composite liquid cooling plate that is easy to diffuse welded according to claim 1, Features: The cutting machine in step 1 is any one of a CNC cutting machine, a laser cutting machine or a water jet cutting machine.

5. The method for preparing an aluminum-based composite liquid cooling plate that is easy to diffuse welded according to claim 1, Features: In step 2, the spraying pressure of the sprayer is between 0.2-0.8MPa, and the distance from the workpiece surface is between 120mm and 250mm to ensure uniform coating.

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