Aluminum-plastic composite liquid cooling plate and preparation method thereof

Abstract

The invention provides an aluminum-plastic composite liquid cooling plate which comprises an aluminum alloy harmonica-shaped tube plate, a plastic plug and an aluminum alloy glue filling buckle, and the aluminum alloy harmonica-shaped tube plate is provided with a liquid flow channel and micropores; the plastic plug comprises a liquid inlet and outlet plug and a flow guide plug, the liquid inlet and outlet plug and the flow guide plug are connected with the aluminum alloy harmonica-shaped tube plate in a glued mode, the aluminum alloy glue filling buckle is arranged on the aluminum alloy harmonica-shaped tube plate in a sleeving mode and connected with the aluminum alloy harmonica-shaped tube plate in a glued mode, a micro mortise and tenon joint structure is formed between the aluminum alloy glue filling buckle and the micro hole, and an installation groove and a glue filling groove are formed in the aluminum alloy glue filling buckle in a concave mode. The glue filling groove is filled with adhesives, the liquid inlet and outlet plug and the flow guide plug are inserted into the mounting groove and connected with the mounting groove in a glued mode, sealing protrusions are arranged on the periphery of the liquid inlet and outlet plug and the periphery of the flow guide plug in a protruding mode respectively, the sealing protrusions and the mounting groove jointly define a glue filling cavity, and the glue filling cavity is filled with adhesives. The invention further provides a preparation method of the aluminum-plastic composite liquid cooling plate.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid cooling devices, in particular to an aluminum-plastic composite liquid cooling plate and a preparation method thereof. Background Art

[0002] Currently, liquid cooling plates, as a highly efficient thermal management material, are not only used in energy storage systems such as hydropower, thermal, wind, and solar power stations, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As the application of power batteries continues to expand, the market demand for them is also growing.

[0003] In existing technologies, the requirements for liquid cooling plates are increasing, and lightweighting is becoming a trend. Aluminum alloy is the most commonly used structural material for liquid cooling plates. Traditional all-aluminum brazed liquid cooling plates are highly mature, but they still have certain limitations. Because new energy electric vehicles are heavier than traditional fuel vehicles, all-aluminum liquid cooling plates are somewhat difficult to meet the lightweight requirements of new energy electric vehicles.

[0004] Aluminum-plastic liquid cooling panels outperform all-aluminum panels in terms of lightweight performance, while maintaining heat transfer efficiency and offering excellent insulation and pressure resistance. However, aluminum-plastic liquid cooling panels typically use nylon plastic and aluminum alloy, which have vastly different properties. Furthermore, the operating environment and testing conditions for liquid cooling panels are relatively stringent, making it technically challenging to combine them and achieve excellent sealing, reliability, stability, and safety. Summary of the Invention

[0005] The object of the present invention is to provide an aluminum-plastic composite liquid cooling plate and a preparation method thereof, aiming to solve or at least partially solve the deficiencies of the above-mentioned background technology. The aluminum-plastic composite liquid cooling plate is used for heat dissipation of energy storage power supply systems. The aluminum-plastic composite liquid cooling plate not only has a simple structure, takes into account certain insulation performance and lightweight, but also can save space. In addition, its aluminum alloy harmonica tube plate and plastic plug can be tightly combined; the preparation method of the aluminum-plastic composite liquid cooling plate not only has a simple process, but also enables the aluminum-plastic composite liquid cooling plate to have good sealing, reliability, stability and safety.

[0006] The present invention provides an aluminum-plastic composite liquid cooling plate, comprising an aluminum alloy harmonica tube plate, a plastic plug and an aluminum alloy glue-filling buckle, wherein a plurality of liquid flow channels are arranged at intervals inside the aluminum alloy harmonica tube plate, and a plurality of micropores are concavely arranged on the surfaces of both ends thereof; the plastic plug comprises an inlet and outlet liquid plug and a guide plug respectively installed at both ends of the aluminum alloy harmonica tube plate, and the inlet and outlet liquid plug and the guide plug are respectively glued to the aluminum alloy harmonica tube plate, the inlet and outlet liquid plug have a liquid inlet and a liquid outlet arranged on the same side, and the inlet and outlet liquid plug is provided with a liquid inlet cavity, a liquid outlet cavity and a first guide cavity located between the liquid inlet cavity and the liquid outlet cavity, the liquid inlet cavity and the liquid outlet cavity are respectively connected with the liquid inlet and the liquid outlet, the guide plug is provided with a second guide cavity, the liquid inlet cavity, The liquid outlet cavity, the first guide cavity and the second guide cavity are all connected to the liquid flow channel; the aluminum alloy glue-filling buckle is set on the aluminum alloy harmonica tube plate and glued to the two ends of the aluminum alloy harmonica tube plate, and a micro-mortise and tenon structure is formed between the aluminum alloy glue-filling buckle and the micropores by gluing. The two ends of the aluminum alloy glue-filling buckle are respectively recessed with mounting grooves and glue-filling grooves, and the glue-filling grooves are filled with adhesive. At least part of the liquid inlet and outlet plugs and the guide plugs are inserted into the mounting grooves and glued to the groove walls of the mounting grooves; the outer peripheries of the liquid inlet and outlet plugs and the guide plugs are respectively convexly provided with sealing protrusions, and one end of the aluminum alloy glue-filling buckle is provided with a mounting groove that abuts against the sealing protrusion, and the sealing protrusion and the mounting groove together form a glue-filling cavity, and the glue-filling cavity is filled with adhesive.

[0007] Furthermore, the liquid inlet and outlet plug is provided with a first installation cavity that cooperates with the aluminum alloy harmonica tube plate, one end of the aluminum alloy harmonica tube plate is inserted into the first installation cavity and glued to the cavity wall of the first installation cavity; the diversion plug is provided with a second installation cavity that cooperates with the aluminum alloy harmonica tube plate, the other end of the aluminum alloy harmonica tube plate is inserted into the second installation cavity and glued to the cavity wall of the second installation cavity.

[0008] Furthermore, the liquid inlet cavity, the liquid outlet cavity and the first guide cavity are all connected to the first installation cavity, and the liquid inlet cavity and the liquid outlet cavity are respectively spaced apart from the adjacent first guide cavity, and the second guide cavity is connected to the second installation cavity.

[0009] The present invention also provides a method for preparing an aluminum-plastic composite liquid cooling plate, which is used to prepare the above-mentioned aluminum-plastic composite liquid cooling plate, comprising the following steps: S1. Perform nano-etching treatment on the surfaces of both ends of the aluminum alloy harmonica tube plate, perform surface oxide layer removal treatment on the aluminum alloy filler buckle, and perform plasma polymerization degreasing treatment on the plastic plug; S2. Apply a coupling agent modified primer to the contact surfaces between the aluminum alloy harmonica tube plate, the aluminum alloy filler buckle, and the plastic plug, and then apply an adhesive; S3, respectively assembling plastic plugs to both ends of the aluminum alloy harmonica tube plate, and assembling aluminum alloy filler buckles to the connection between the aluminum alloy harmonica tube plate and the plastic plugs; S4. Apply reinforcing glue to the connection between the aluminum alloy filling buckle and the plastic plug.

[0010] Furthermore, in step S1, the surfaces of both ends of the aluminum alloy harmonica tube plate are subjected to surface nano-etching treatment using a laser composite etching method to form a plurality of micropores.

[0011] Furthermore, the aluminum alloy harmonica tube plate subjected to the surface nano-etching treatment in step S1 is coated with a super-hydrophilic nano-TiO2 coating.

[0012] Furthermore, during the assembly of the aluminum alloy glue-filled buckle in step S3, the glue-filled cavity and the glue-filled groove are respectively filled with adhesive.

[0013] Furthermore, the coupling agent adopts silane coupling agent KH-560, the adhesive adopts polyurethane interpenetrating network adhesive, and the reinforcing adhesive adopts nano-Al2O3 reinforcing adhesive.

[0014] The present invention provides an aluminum-plastic composite liquid cooling plate for heat dissipation in an energy storage power supply system. The plate has a simple structure and is easy to assemble. The plastic plug is lighter than the aluminum alloy plug in the prior art and has certain insulation properties. The liquid inlet and outlet are arranged on the same side, which simplifies the design of the pipeline connecting the aluminum-plastic composite liquid cooling plate, saves the installation space of the aluminum-plastic composite liquid cooling plate, and increases the installation space of the battery cell. The coordination of the liquid inlet cavity, the liquid outlet cavity, the liquid flow channel, the first guide cavity, and the second guide cavity allows the liquid to flow evenly in the aluminum alloy harmonica tube plate to remove heat, thereby achieving a liquid cooling effect. By installing the aluminum alloy glue-filling buckle on the aluminum alloy harmonica tube plate and inserting the inlet and outlet liquid plugs and the guide plug into the installation grooves of the aluminum alloy glue-filling buckle respectively, the aluminum alloy glue-filling buckle and the aluminum alloy harmonica tube plate are combined with the inlet and outlet liquid plugs and the guide plug respectively to form a mortise and tenon structure, and then the aluminum alloy harmonica tube plate, the plastic plug and the aluminum alloy glue-filling buckle are fixed to each other by gluing, so that a micro mortise and tenon structure is formed between the aluminum alloy glue-filling buckle and the micropores, thereby achieving a tight combination between the aluminum alloy harmonica tube plate, the plastic plug and the aluminum alloy glue-filling buckle, thereby improving the sealing, reliability, stability and safety of the aluminum-plastic composite liquid cold plate.

[0015] The present invention provides a preparation method for an aluminum-plastic composite liquid cooling plate with a simple process. Through the mortise and tenon structure formed between the aluminum alloy harmonica tube plate, the aluminum alloy glue filling buckle, and the plastic plug, the micro-mortise and tenon structure formed between the aluminum alloy harmonica tube plate and the aluminum alloy glue filling buckle, chemical bonding using a coupling agent, physical fastening using an adhesive, and further sealing using a reinforcing glue, the aluminum alloy harmonica tube plate, the aluminum alloy glue filling buckle, and the plastic plug are tightly bonded, the problem of liquid leakage caused by gluing is solved, and the aluminum-plastic composite liquid cooling plate is ensured to have good sealing, reliability, stability, safety, and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a three-dimensional diagram of an aluminum-plastic composite liquid cooling plate in the present invention.

[0018] Figure 2 for Figure 1 A partial schematic diagram of the aluminum-plastic composite liquid cooling panel shown in FIG.

[0019] Figure 3 for Figure 2 The cross-section of the aluminum-plastic composite liquid cooling plate shown Figure 1 .

[0020] Figure 4 for Figure 2 The cross-section of the aluminum-plastic composite liquid cooling plate shown Figure 2 .

[0021] Figure 5 for Figure 4 Schematic diagram of the exploded aluminum-plastic composite liquid cooling plate shown.

[0022] Figure 6 for Figure 4 A magnified schematic diagram.

[0023] Figure 7 for Figure 4 Schematic diagram after enlargement of point B in the middle.

[0024] Figure 8 for Figure 5 Enlarged schematic diagram of point C in the middle.

[0025] Figure 9 for Figure 5 The enlarged schematic diagram of point D in the middle.

[0026] Figure 10 for Figure 1 A perspective view of the aluminum alloy harmonica tube plate shown in FIG.

[0027] Figure 11 for Figure 10 The enlarged schematic diagram of point E in the middle.

[0028] Figure 12 Schematic diagram of the micro mortise and tenon structure of the present invention.

[0029] Figure 13 for Figure 1 A three-dimensional view of the inlet and outlet plugs shown in FIG.

[0030] Figure 14 for Figure 1 A perspective view of the flow guide plug shown in FIG.

[0031] Figure 15 This is a flow chart of a method for preparing an aluminum-plastic composite liquid cooling panel according to a first embodiment of the present invention.

[0032] Figure 16 This is a flow chart of a method for preparing an aluminum-plastic composite liquid cooling panel according to a second embodiment of the present invention.

[0033] In the accompanying drawings, the components represented by the reference numerals are as follows: 10. Aluminum alloy harmonica tube plate; 11. Liquid flow channel; 12. Partition strip; 13. Micropore; 20. Liquid inlet and outlet plugs; 21. Liquid inlet; 22. Liquid outlet; 23. Liquid inlet cavity; 24. Liquid outlet cavity; 25. First guide cavity; 26. First installation cavity; 27. Liquid inlet channel; 28. Liquid outlet channel; 29. ​​First separator; 291. First plug-in slot; 30. Guide plug; 31. Second guide cavity; 32. Second installation cavity; 33. Second separator; 331. Second plug-in slot; 40. Aluminum alloy glue-filling buckle; 41. Installation slot; 42. Glue-filling slot; 50. Sealing protrusion; 51. Matching slot; 60. Glue-filling cavity; 70. Abutment surface; 80. Cured adhesive; 90. Micro mortise and tenon structure. DETAILED DESCRIPTION

[0034] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the described embodiments are merely some, and not all, of the embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the description of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0035] Unless otherwise specified or limited, the terms "disposed," "installed," and "connected" should be interpreted broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms based on the specific circumstances.

[0036] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0037] The terms "first," "second," "third," etc. are merely used to distinguish between elements of similar nature and do not indicate or imply relative importance or a particular order.

[0038] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.

[0039] See also Figure 1-Figure 5 and Figure 10-14 The present invention provides an aluminum-plastic composite liquid cooling plate, comprising an aluminum alloy harmonica tube plate 10, a plastic plug and an aluminum alloy filling buckle 40.

[0040] The aluminum alloy harmonica tubeplate 10 is internally spaced apart with several liquid flow channels 11, separated by partition bars 12. The inner diameter and number of the liquid flow channels 11 can be adjusted as needed. Multiple micropores 13 are recessed into the surfaces of both ends of the aluminum alloy harmonica tubeplate 10. Furthermore, the structural design of the aluminum alloy harmonica tubeplate 10 can be optimized for different application scenarios, such as adjusting the overall thickness, shape, and layout of the liquid flow channels 11 to achieve maximum weight reduction while maintaining strength.

[0041] The plastic plug includes an inlet and outlet plug 20 and a guide plug 30 respectively installed at both ends of the aluminum alloy harmonica tube plate 10, and the inlet and outlet plug 20 and the guide plug 30 are respectively glued to the contact surface of the aluminum alloy harmonica tube plate 10, and the inlet and outlet plug 20 has a liquid inlet 21 and a liquid outlet 22 arranged on the same side, and the inlet and outlet plug 20 is provided with a liquid inlet cavity 23, a liquid outlet cavity 24 and a first guide cavity located between the liquid inlet cavity 23 and the liquid outlet cavity 24. The flow cavity 25, the liquid inlet cavity 23, and the liquid outlet cavity 24 are respectively connected to the liquid inlet 21 and the liquid outlet 22. The diversion plug 30 is provided with a second diversion cavity 31. The liquid inlet cavity 23, the liquid outlet cavity 24, the first diversion cavity 25, and the second diversion cavity 31 are all connected to the liquid flow channel 11; more specifically, the liquid inlet 21 is connected to the liquid inlet cavity 23 through the liquid inlet channel 27, and the liquid outlet 22 is connected to the liquid outlet cavity 24 through the liquid outlet channel 28.

[0042] The aluminum alloy glue-filling buckle 40 is sleeved on the aluminum alloy harmonica tube plate 10 and glued to the contact surfaces at both ends of the aluminum alloy harmonica tube plate 10. A micro mortise and tenon structure 90 is formed between the aluminum alloy glue-filling buckle 40 and the micropores 13 by gluing. A mounting groove 41 is recessed at one end of the aluminum alloy glue-filling buckle 40. At least part of the liquid inlet and outlet plug 20 and the guide plug 30 are inserted into the mounting groove 41 and glued to the groove wall of the mounting groove 41.

[0043] More specifically, the contact positions between the two end surfaces of the aluminum alloy harmonica tube plate 10 and the aluminum alloy glue-filling buckle 40 are subjected to surface nano-etching treatment to form a plurality of micropores 13, thereby increasing the roughness of the contact surfaces between the two end surfaces of the aluminum alloy harmonica tube plate 10 and the aluminum alloy glue-filling buckle 40, and enabling the adhesive to penetrate into the etched micropores 13. The cured adhesive 80 forms a micro-mortise and tenon structure 90 with the micropores 13, forming an anchor effect, so that the aluminum alloy harmonica tube plate 10 and the aluminum alloy glue-filling buckle 40 are tightly combined.

[0044] In this embodiment, the plastic plug is made of nylon.

[0045] As described above, the present invention provides an aluminum-plastic composite liquid cooling plate for heat dissipation of an energy storage power supply system. It has a simple structure and low assembly difficulty. The plastic plug is lighter than the aluminum alloy plug in the prior art and has certain insulation performance. By arranging the liquid inlet 21 and the liquid outlet 22 on the same side, the pipeline design connecting the aluminum-plastic composite liquid cooling plate is simplified, which can save the installation space of the aluminum-plastic composite liquid cooling plate and increase the installation space of the battery cell. By cooperating with the liquid inlet cavity 23, the liquid outlet cavity 24, the liquid flow channel 11, the first guide cavity 25, and the second guide cavity 31, the liquid can flow evenly in the aluminum alloy harmonica tube plate 10 and take away the heat, thereby achieving the effect of liquid cooling. By the aluminum alloy filling buckle 40 is set on the aluminum alloy harmonica tube plate 10, and the inlet and outlet liquid plugs 20 and the guide plug 30 are respectively inserted into the installation grooves 41 of the aluminum alloy filling buckle 40, then the aluminum alloy filling buckle 40 and the aluminum alloy harmonica tube plate 10 are combined with the inlet and outlet liquid plugs 20 and the guide plug 30 to form a mortise and tenon structure, and then the aluminum alloy harmonica tube plate 10, the plastic plug, and the aluminum alloy filling buckle 40 are fixed to each other by gluing, so that a micro mortise and tenon structure 90 is formed between the aluminum alloy filling buckle 40 and the micropore 13, thereby achieving a tight combination between the aluminum alloy harmonica tube plate 10, the plastic plug, and the aluminum alloy filling buckle 40, thereby improving the sealing, reliability, stability and safety of the aluminum-plastic composite liquid cold plate.

[0046] See also Figure 3 , Figure 13 and Figure 14The inlet and outlet liquid plug 20 is provided with a first mounting cavity 26 that cooperates with the aluminum alloy harmonica tube plate 10. One end of the aluminum alloy harmonica tube plate 10 is inserted into the first mounting cavity 26 and glued to the cavity wall of the first mounting cavity 26. One end of the inlet and outlet liquid plug 20 is inserted into the mounting groove 41 of the aluminum alloy glue filling buckle 40, and the aluminum alloy glue filling buckle 40 is glued to the aluminum alloy harmonica tube plate 10. Through the cooperation of the above structures, the aluminum alloy glue filling buckle 40 is combined with the aluminum alloy harmonica tube plate 10 to form a mortise and tenon structure with the inlet and outlet liquid plug 20.

[0047] The diversion plug 30 is provided with a second mounting cavity 32 that cooperates with the aluminum alloy harmonica tube plate 10. The other end of the aluminum alloy harmonica tube plate 10 is inserted into the second mounting cavity 32 and glued to the cavity wall of the second mounting cavity 32. One end of the diversion plug 30 is inserted into the mounting groove 41 of another aluminum alloy glue-filling buckle 40, which is glued to the aluminum alloy harmonica tube plate 10. Through the above structure, the aluminum alloy glue-filling buckle 40 is combined with the aluminum alloy harmonica tube plate 10 to form a mortise and tenon structure with the diversion plug 30.

[0048] Furthermore, the liquid inlet cavity 23, the liquid outlet cavity 24, and the first guide cavity 25 are all connected to the first installation cavity 26, and the liquid inlet cavity 23 and the liquid outlet cavity 24 are respectively spaced apart from the adjacent first guide cavity 25, and the second guide cavity 31 is connected to the second installation cavity 32.

[0049] More specifically, the liquid inlet and outlet plug 20 is provided with a first mounting cavity 26 at one end, which is divided by a first partition block 29 into a liquid inlet cavity 23, a liquid outlet cavity 24, and a first guide cavity 25, all of which are connected to the liquid flow channel 11. The first partition block 29 is also provided with a first insertion groove 291 corresponding to the partition bar 12 of the aluminum alloy harmonica tube plate 10. When the aluminum alloy harmonica tube plate 10 is inserted into the first mounting cavity 26 of the liquid inlet and outlet plug 20, the partition bar 12 is inserted into the first insertion groove 291. Furthermore, the liquid inlet and outlet plug 20 may be provided with one or more first guide cavities 25. When multiple first guide cavities 25 are provided in the liquid inlet and outlet plug 20, adjacent first guide cavities 25 are separated by the first partition block 29.

[0050] One end of the diversion plug 30, which is provided with a second mounting cavity 32, is divided into multiple second diversion cavities 31 communicating with the liquid flow channel 11 by a second dividing block 33. The second dividing block 33 is provided with second insertion grooves 331 corresponding to the partition bars 12 of the aluminum alloy harmonica tube plate 10. When the aluminum alloy harmonica tube plate 10 is inserted into the second mounting cavity 32 of the diversion plug 30, the partition bars 12 are inserted into the second insertion grooves 331. Adjacent second diversion cavities 31 are separated by the second dividing blocks 33.

[0051] See also Figure 3In this embodiment, the liquid inlet and outlet plug 20 is provided with a first guide cavity 25, and the guide cavity 30 is provided with two second guide cavities 31. The liquid inlet and outlet plug 20 is provided with two first dividers 29, with the liquid inlet cavity 23, the first guide cavity 25, and the liquid outlet cavity 24 separated by the two first dividers 29. The guide cavity 30 is provided with a second divider 33, with the two second guide cavities 31 separated by the two second dividers 33. The ends of the aluminum alloy harmonica tube plate 10 are respectively inserted into the first mounting cavity 26 and the second mounting cavity 32. Through the cooperation of the first divider 29, the second divider 33, and the partition bar 12, the liquid flows in different directions in different areas of the liquid flow channel 11, forming a continuous "N"-shaped path. This allows the aluminum-plastic composite liquid cold plate to remove more heat, greatly improving the heat dissipation effect.

[0052] In addition, the number of the first guide chamber 25 and the second guide chamber 31 can be flexibly adjusted according to the direction of the liquid, heat dissipation requirements, etc.

[0053] See also Figure 6-Figure 9 The outer periphery of the liquid inlet and outlet plugs 20 and the guide plug 30 are respectively provided with sealing protrusions 50. One end of the aluminum alloy filling buckle 40 with a mounting groove 41 abuts against the sealing protrusion 50. The sealing protrusion 50 and the mounting groove 41 together form a filling cavity 60. The filling cavity 60 is filled with adhesive to enhance the stability of the aluminum alloy filling buckle 40 and the plastic plug, and at the same time, further enhance the sealing performance of the aluminum-plastic composite liquid cold plate.

[0054] More specifically, the sealing protrusion 50 is recessed with a matching groove 51 , and the cross section of the sealing protrusion 50 is L-shaped. One end of the aluminum alloy glue-filling buckle 40 having the mounting groove 41 abuts against the groove wall of the matching groove 51 and is fixed by gluing.

[0055] More specifically, the aluminum alloy glue-filling buckle 40 is provided with a glue-filling groove 42 at the other end of the mounting groove 41. The glue-filling groove 42 is filled with adhesive to enhance the stability of the aluminum alloy glue-filling buckle 40 and the aluminum alloy harmonica tube plate 10, and at the same time, further enhance the sealing of the aluminum-plastic composite liquid cooling plate.

[0056] In addition, the shape and size of the aluminum alloy filler buckle 40 can be customized according to the connection requirements of the aluminum alloy harmonica tube plate 10 and the plastic plug to ensure the stability of the connection.

[0057] The present invention also provides a method for preparing an aluminum-plastic composite liquid cooling plate, which is used to prepare the above-mentioned aluminum-plastic composite liquid cooling plate, comprising the following steps: S1. Performing nano-etching treatment on the surfaces of both ends of the aluminum alloy harmonica tube plate 10, performing surface oxide layer thin film removal treatment on the aluminum alloy filler buckle 40, and performing plasma polymerization degreasing treatment on the plastic plug.

[0058] S2. Coating a coupling agent modified primer on the contact surfaces among the aluminum alloy harmonica tube plate 10, the aluminum alloy filler buckle 40, and the plastic plug, and then coating with adhesive.

[0059] S3. Assemble the plastic plugs to both ends of the aluminum alloy harmonica tube plate 10 respectively, and assemble the aluminum alloy filler buckle 40 to the connection between the aluminum alloy harmonica tube plate 10 and the plastic plugs.

[0060] S4. Apply reinforcing glue to the connection between the aluminum alloy glue-filling buckle 40 and the plastic plug.

[0061] Among them, in step S1, the surface nano-etching treatment is performed on the contact surfaces between the two ends of the aluminum alloy harmonica tube plate 10 and the aluminum alloy filling buckle 40 to form a plurality of micropores 13, thereby increasing the roughness of the contact surface between the aluminum alloy harmonica tube plate 10 and the aluminum alloy filling buckle 40, and enabling the adhesive in the subsequent steps to penetrate into the etched micropores. The cured adhesive 80 forms a micro-mortise and tenon structure 90 with the micropores, forming an anchor effect, so that the aluminum alloy harmonica tube plate 10 and the aluminum alloy filling buckle 40 are tightly combined.

[0062] The plasma polymerization degreasing treatment of the plastic plug in step S1 can improve its surface activity, thereby making it easier for the plastic plug to be combined with the aluminum alloy harmonica tube plate 10 and the aluminum alloy filling buckle 40.

[0063] The role of the coupling agent in step S2 is to make the aluminum alloy react with the plastic to form a chemical bond, thereby achieving a close bond between the aluminum alloy and the plastic and enhancing the sealing of the aluminum-plastic composite liquid cooling panel.

[0064] Among them, the connection between the aluminum alloy filling buckle 40 and the plastic plug in step S4 specifically refers to the abutment surface 70 between one end of the aluminum alloy filling buckle 40 with the installation groove 41 and the matching groove 51 of the sealing protrusion 50. Coating the reinforcing glue on the abutment surface 70 can further enhance the sealing of the aluminum-plastic composite liquid cooling plate.

[0065] As described above, the present invention provides a method for preparing an aluminum-plastic composite liquid cooling plate with a simple process. Through the mortise and tenon structure formed between the aluminum alloy harmonica tube plate 10, the aluminum alloy glue filling buckle 40, and the plastic plug, the micro-mortise and tenon structure 90 between the aluminum alloy harmonica tube plate 10 and the aluminum alloy glue filling buckle 40, chemical bonding using a coupling agent, physical fastening using an adhesive, and further sealing using a reinforcing glue, the aluminum alloy harmonica tube plate 10, the aluminum alloy glue filling buckle 40, and the plastic plug are tightly bonded, thereby solving the problem of liquid leakage caused by gluing, and ensuring that the aluminum-plastic composite liquid cooling plate has good sealing, reliability, stability, safety, and durability.

[0066] More specifically, in step S1 , the aluminum alloy harmonica tube plate 10 is subjected to surface nano-etching treatment using a laser composite etching method.

[0067] More specifically, the coupling agent is silane coupling agent KH-560, the adhesive is polyurethane interpenetrating network adhesive, and the reinforcing adhesive is nano-Al2O3 reinforcing adhesive.

[0068] In addition, the plastic plugs can be injection molded at both ends of the aluminum alloy harmonica tube plate 10 by injection molding.

[0069] For more details, please refer to Figure 15 The method for preparing the aluminum-plastic composite liquid cooling plate of the first embodiment includes the following steps: S1. Performing nano-etching treatment on the surfaces of both ends of the aluminum alloy harmonica tube plate 10, performing surface oxide layer thin film removal treatment on the aluminum alloy filler buckle 40, and performing plasma polymerization degreasing treatment on the plastic plug.

[0070] S2. Coating a coupling agent modified primer on the contact surfaces among the aluminum alloy harmonica tube plate 10, the aluminum alloy filler buckle 40, and the plastic plug, and then coating with adhesive.

[0071] S3. Assemble the plastic plugs to both ends of the aluminum alloy harmonica tube plate 10 respectively, and assemble the aluminum alloy filler buckle 40 to the connection between the aluminum alloy harmonica tube plate 10 and the plastic plugs.

[0072] S4, filling adhesive into the glue filling cavity 60 and the glue filling groove 42 respectively.

[0073] S5. Apply reinforcing glue to the connection between the aluminum alloy glue-filling buckle 40 and the plastic plug.

[0074] More specifically, the aluminum-plastic composite liquid cooling plate in the above embodiment is provided with a glue filling cavity 60 and a glue filling groove 42. In step S4, the glue filling cavity 60 and the glue filling groove 42 are respectively filled with adhesive to achieve full coverage of each position with the adhesive, thereby ensuring the reliability and stability of the connection between the aluminum alloy glue filling buckle 40 and the plastic plug, and the aluminum alloy glue filling buckle 40 and the aluminum alloy harmonica tube plate 10, while further enhancing the sealing of the aluminum-plastic composite liquid cooling plate.

[0075] For more details, please refer to Figure 16 The preparation method of the aluminum-plastic composite liquid cooling plate of the second embodiment includes the following steps: S1. Performing nano-etching treatment on the surfaces of both ends of the aluminum alloy harmonica tube plate 10, performing surface oxide layer thin film removal treatment on the aluminum alloy filler buckle 40, and performing plasma polymerization degreasing treatment on the plastic plug.

[0076] S2. Coating a super-hydrophilic nano-TiO2 coating on the aluminum alloy harmonica tube plate 10 and drying it.

[0077] S3. Apply a coupling agent modified primer to the contact surfaces among the aluminum alloy harmonica tube plate 10, the aluminum alloy filler buckle 40, and the plastic plug, and then apply an adhesive.

[0078] S4. Assemble the plastic plugs to both ends of the aluminum alloy harmonica tube plate 10 respectively, and assemble the aluminum alloy filler buckle 40 to the connection between the aluminum alloy harmonica tube plate 10 and the plastic plugs.

[0079] S5 , filling adhesive into the glue filling cavity 60 and the glue filling groove 42 respectively.

[0080] S6. Apply reinforcing glue to the connection between the aluminum alloy glue-filling buckle 40 and the plastic plug.

[0081] Among them, in step S2, all contact surfaces of the aluminum alloy harmonica tube plate 10 and the plastic plug are coated with a super-hydrophilic nano-TiO2 coating, so that the surface of the aluminum alloy harmonica tube plate 10 with nano-etching has hydrophilicity, so that the surface can better react with the plastic and combine.

[0082] In addition, the aluminum-plastic composite liquid cooling panel prepared by the preparation method of any of the above embodiments is subjected to an airtightness test. Qualified products that pass the test enter the next process, while unqualified products that fail the test are selected for other processing methods.

[0083] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An aluminum-plastic composite liquid cooling plate, characterized in that: include: An aluminum alloy harmonica tube plate (10) having a plurality of liquid flow channels (11) spaced apart therein and a plurality of micropores (13) recessed on the surfaces of both ends thereof; The plastic plug comprises an inlet and outlet plug (20) and a guide plug (30) respectively installed at both ends of the aluminum alloy harmonica tube plate (10), and the inlet and outlet plug (20) and the guide plug (30) are respectively glued to the aluminum alloy harmonica tube plate (10), the inlet and outlet plug (20) has a liquid inlet (21) and a liquid outlet (22) arranged on the same side, and the inlet and outlet plug (20) is provided with a liquid inlet cavity (23), a liquid outlet cavity (24) and a liquid outlet located at the a first flow guide cavity (25) between the liquid inlet cavity (23) and the liquid outlet cavity (24), wherein the liquid inlet cavity (23) and the liquid outlet cavity (24) are respectively connected to the liquid inlet (21) and the liquid outlet (22); the flow guide plug (30) is provided with a second flow guide cavity (31); the liquid inlet cavity (23), the liquid outlet cavity (24), the first flow guide cavity (25), and the second flow guide cavity (31) are all connected to the liquid flow channel (11); An aluminum alloy glue-filling buckle (40) is sleeved on the aluminum alloy harmonica tube plate (10) and glued to both ends of the aluminum alloy harmonica tube plate (10); a micro-mortise and tenon structure (90) is formed between the aluminum alloy glue-filling buckle (40) and the micropore (13) by gluing; a mounting groove (41) and a glue-filling groove (42) are respectively provided at both ends of the aluminum alloy glue-filling buckle (40); the glue-filling groove (42) is filled with adhesive; at least a portion of the inlet and outlet plug (20) and the guide plug (30) are inserted into the mounting groove (41) and glued to the groove wall of the mounting groove (41); The outer peripheries of the liquid inlet and outlet plugs (20) and the diversion plugs (30) are respectively provided with sealing protrusions (50); one end of the aluminum alloy glue filling buckle (40) provided with the mounting groove (41) abuts against the sealing protrusion (50); the sealing protrusion (50) and the mounting groove (41) together enclose a glue filling cavity (60); and the glue filling cavity (60) is filled with adhesive.

2. The aluminum-plastic composite liquid cooling panel according to claim 1, characterized in that: The liquid inlet and outlet plug (20) is provided with a first mounting cavity (26) that cooperates with the aluminum alloy harmonica tube plate (10), and one end of the aluminum alloy harmonica tube plate (10) is inserted into the first mounting cavity (26) and glued to the cavity wall of the first mounting cavity (26); the flow guide plug (30) is provided with a second mounting cavity (32) that cooperates with the aluminum alloy harmonica tube plate (10), and the other end of the aluminum alloy harmonica tube plate (10) is inserted into the second mounting cavity (32) and glued to the cavity wall of the second mounting cavity (32).

3. The aluminum-plastic composite liquid cooling panel according to claim 2, characterized in that: The liquid inlet cavity (23), the liquid outlet cavity (24), and the first guide cavity (25) are all arranged in communication with the first installation cavity (26), and the liquid inlet cavity (23) and the liquid outlet cavity (24) are respectively arranged to be spaced apart from the adjacent first guide cavity (25), and the second guide cavity (31) is arranged in communication with the second installation cavity (32).

4. A method for preparing an aluminum-plastic composite liquid cooling panel, for preparing the aluminum-plastic composite liquid cooling panel according to any one of claims 1 to 3, characterized in that: The following steps are involved: S1, performing a surface nano-etching treatment on the surfaces of both ends of the aluminum alloy harmonica tube plate (10), performing a surface oxide layer thin film removal treatment on the aluminum alloy filler buckle (40), and performing a plasma polymerization degreasing treatment on the plastic plug; S2, coating the contact surfaces between the aluminum alloy harmonica tube plate (10), the aluminum alloy filler buckle (40), and the plastic plug with a coupling agent modified primer, and then coating with an adhesive; S3, respectively assembling the plastic plugs to both ends of the aluminum alloy harmonica tube plate (10), and assembling the aluminum alloy filler buckle (40) to the connection between the aluminum alloy harmonica tube plate (10) and the plastic plugs; S4, applying reinforcing glue to the connection between the aluminum alloy glue-filling buckle (40) and the plastic plug.

5. The method for preparing the aluminum-plastic composite liquid cooling panel according to claim 4, wherein: In step S1, the surfaces of both ends of the aluminum alloy harmonica tube plate (10) are subjected to surface nano-etching treatment using a laser composite etching method to form a plurality of micropores (13).

6. The method for preparing the aluminum-plastic composite liquid cooling panel according to claim 4, wherein: The aluminum alloy harmonica tube plate (10) subjected to the surface nano-etching treatment in step S1 is coated with a super-hydrophilic nano-TiO2 coating.

7. The method for preparing the aluminum-plastic composite liquid cooling panel according to claim 4, wherein: When the aluminum alloy glue-filling buckle (40) is assembled in step S3, the glue-filling cavity (60) and the glue-filling groove (42) are respectively filled with adhesive.

8. The method for preparing the aluminum-plastic composite liquid cooling panel according to any one of claims 4 to 7, characterized in that: The coupling agent is silane coupling agent KH-560, the adhesive is polyurethane interpenetrating network adhesive, and the reinforcing adhesive is nano-Al2O3 reinforcing adhesive.

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