Copper-aluminum composite water cooling plate

Abstract

The utility model discloses a copper aluminum composite water cooling plate relates to heat dissipation technical field. The water cooling plate includes cover, heat dissipation structure, connecting structure and bottom shell, heat dissipation structure is located on one side of cover, and is fixedly connected with cover, connecting structure is located at the side of cover, one side is connected with cover, and the other side is connected with bottom shell, and bottom shell is the groove of one end opening, and after the opening of bottom shell is connected with cover through connecting structure, heat dissipation structure is located in the groove, and cover and bottom shell form the cavity for accommodating cooling medium, and heat dissipation structure can exchange heat with the cooling medium in the cavity, the material of cover and heat dissipation structure is copper or copper alloy, and the material of connecting structure and bottom shell is aluminum or aluminum alloy, and heat dissipation structure and cover are sprayed with aluminum powder or aluminum alloy powder on the face of bottom shell. The water cooling plate of the utility model does not occur galvanic corrosion, and the cost is saved while guaranteeing the heat transfer efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology, and in particular to a copper-aluminum composite water-cooled plate. Background Technology

[0002] Liquid cooling is a technology that uses liquid as a cooling medium to transfer heat generated by internal server components to the outside of the device through liquid flow, thereby ensuring the safe operation of the server equipment. The main advantages of liquid cooling are its ultra-high energy efficiency and ultra-high heat density, enabling efficient heat dissipation and unaffected by environmental factors such as altitude, region, and temperature. Compared to traditional air-cooling systems, liquid cooling offers higher heat dissipation efficiency and lower energy consumption, making it particularly suitable for high-density computing environments such as data centers and supercomputers. Liquid cooling solutions are mainly divided into three types: water-cooled plate liquid cooling, immersion liquid cooling, and spray liquid cooling, with water-cooled plate liquid cooling being the most commonly used technology.

[0003] In water-cooled plate liquid cooling systems, copper and aluminum are commonly used thermally conductive materials, each with its own advantages and disadvantages in practical applications. Aluminum has a thermal conductivity of approximately 205 W / m·K, while copper has a thermal conductivity of approximately 385 W / m·K, indicating that copper's thermal conductivity is significantly higher than aluminum's. If copper is used as the base material in a water-cooled plate, its thermal conductivity is high; however, due to the higher price of copper compared to aluminum, it is expensive and unsuitable for large-scale use. If aluminum or aluminum alloys are used as the base material, the thermal conductivity is relatively lower, but the cost is reasonable, making it more commonly used in actual production. If a composite of copper and aluminum is used as the base material, it can achieve the thermal conductivity of copper while saving costs. However, when copper and aluminum are placed in the same liquid cooling medium, a potential difference exists, leading to galvanic corrosion, which reduces the thermal conductivity of the water-cooled plate, may even damage the plate, and ultimately cause leakage.

[0004] In the process of realizing this utility model, the inventors discovered that the prior art has at least the following problems: Existing water-cooled plates made of copper and aluminum composite materials are prone to galvanic corrosion, which affects the heat conduction efficiency and service life of the water-cooled plates. Utility Model Content

[0005] The purpose of this utility model is to provide a copper-aluminum composite water-cooled plate to solve the technical problem in the prior art where water-cooled plates formed by copper and aluminum composites suffer from galvanic corrosion, affecting the thermal conductivity and service life of the water-cooled plate. The various technical effects of the preferred technical solutions provided by this utility model are detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solution: This utility model provides a copper-aluminum composite water-cooled plate, comprising: a cover, a heat dissipation structure, a connecting structure, and a bottom shell; The heat dissipation structure is located on one side of the cover and is fixedly connected to the cover; The connecting structure is located on the side of the cover, with one side connected to the cover and the other side connected to the bottom shell; The bottom shell is a groove with one end open. After the cover is connected to the opening of the bottom shell through the connecting structure, the heat dissipation structure is located in the groove, and the cover and the bottom shell form a cavity for containing the cooling medium. The heat dissipation structure can exchange heat with the cooling medium in the cavity. The cover and the heat dissipation structure are made of copper or copper alloy, and the connecting structure and the bottom shell are made of aluminum or aluminum alloy; the heat dissipation structure and the surface of the cover facing the bottom shell are coated with aluminum powder or aluminum alloy powder.

[0007] Preferably, a connecting recess is provided on the side of the connecting structure that connects to the cover, and the connecting recess and the cover are in clearance fit.

[0008] Preferably, a recessed platform is provided at the top of the inner wall of the slot of the bottom shell, and the recessed platform and the connecting structure are in clearance fit.

[0009] Preferably, the heat dissipation structure includes a plurality of heat dissipation components, which are evenly arranged on the cover.

[0010] Preferably, the length of the heat dissipation component is less than the distance between the bottom wall of the base plate and the bottom wall of the tank.

[0011] Preferably, the heat dissipation component is a spade-shaped fin, an extruded fin, or a heat dissipation column.

[0012] Preferably, the cover and the connecting structure, as well as the connecting structure and the bottom shell, are welded together.

[0013] Preferably, the bottom shell is provided with a water inlet and a water outlet at both ends. The water inlet is used to introduce the cooling medium into the cavity formed by the bottom shell and the cover, and the water outlet is used to lead the cooling medium outward after heat exchange.

[0014] Preferably, the number of water inlets is at least one, and the number of water outlets is at least one.

[0015] Preferably, the water inlet and water outlet are made of aluminum or aluminum alloy.

[0016] Implementing one of the above-described technical solutions of this utility model has the following advantages or beneficial effects: In this embodiment, the water-cooled plate includes a cover, a heat dissipation structure, a connecting structure, and a bottom shell. After fixing the heat dissipation structure to the cover, the cover with the heat dissipation structure is then fixed to the connecting structure. Aluminum powder or aluminum alloy powder is sprayed onto the side of the cover with the heat dissipation structure, so that the side of the cover and the heat dissipation structure facing the bottom shell is covered with an aluminum or aluminum alloy coating. Finally, the cover and the bottom shell are fixed together by the connecting structure, completing the fabrication of the water-cooled plate. The water-cooled plate in this embodiment has a simple installation method, and the cover and the heat dissipation structure are made of copper or copper alloy. The connecting structure and the bottom shell are also made of copper or copper alloy. Spraying aluminum powder or aluminum alloy powder onto the side of the cover and the heat dissipation structure facing the bottom shell prevents galvanic corrosion with the bottom shell, thus extending the service life of the water-cooled plate. Furthermore, the use of both copper and aluminum materials provides high heat transfer efficiency while controlling costs, making it suitable for large-scale application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a first-view schematic diagram of the overall structure of this utility model embodiment disassembled; Figure 3 This is a first-view schematic diagram of the overall structure of this utility model embodiment disassembled; Figure 4 This is a schematic diagram of the disassembled structure of the connecting structure and the bottom shell in an embodiment of this utility model; In the diagram: 1. Cover; 11. Connection position; 2. Heat dissipation structure; 3. Connection structure; 31. Connection platform; 4. Bottom shell; 41. Tank; 42. Bottom shell platform; 43. Water inlet; 44. Water outlet. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, various exemplary embodiments described below will be referenced to the accompanying drawings, which form part of the exemplary embodiments, illustrating various exemplary embodiments that may be adopted to implement this utility model. Unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. It should be understood that they are merely examples of processes, methods, and apparatuses consistent with some aspects of this utility model disclosed as detailed in the appended claims, and other embodiments may be used, or structural and functional modifications may be made to the embodiments listed herein without departing from the scope and spirit of this utility model.

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," etc., indicate the orientation or positional relationship based on the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the referred element must have a specific orientation, or be constructed and operated in a specific orientation. The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. The term "multiple" means two or more. The terms "connected" and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, integral connections, mechanical connections, electrical connections, communication connections, direct connections, indirect connections through an intermediate medium, and can be the internal connection of two elements or the interaction relationship between two elements. The term "and / or" includes any and all combinations of one or more of the related listed items. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] To illustrate the technical solution described in this utility model, specific embodiments are described below, showing only the parts related to the embodiments of this utility model.

[0021] Example: like Figure 1-4As shown, this utility model provides a copper-aluminum composite water-cooled plate, including: a cover 1, a heat dissipation structure 2, a connecting structure 3, and a bottom shell 4; the heat dissipation structure 2 is located on one side of the cover 1 and is fixedly connected to the cover 1; the connecting structure 3 is located on the side of the cover 1, one side is connected to the cover 1, and the other side is connected to the bottom shell 4; the bottom shell 4 is a groove 41 with one end open. After the cover 1 is connected to the opening of the bottom shell 4 through the connecting structure 3, the heat dissipation structure 2 is located in the groove 41, and the cover 1 and the bottom shell 4 form a cavity for containing the cooling medium. The heat dissipation structure 2 can exchange heat with the cooling medium in the cavity; the cover 1 and the heat dissipation structure 2 are made of copper or copper alloy, and the connecting structure 3 and the bottom shell 4 are made of aluminum or aluminum alloy; aluminum powder or aluminum alloy powder is sprayed on the heat dissipation structure 2 and the surface of the cover 1 facing the bottom shell 4.

[0022] Specifically, such as Figure 2-4 As shown, the copper-aluminum composite water-cooled plate includes a cover 1, a heat dissipation structure 2, a connecting structure 3, and a bottom shell 4. The heat dissipation structure 2 is fixedly connected to one side of the cover 1. The connection method can be welding, or the heat dissipation structure 2 can be directly integrated with the cover 1 during production. However, regardless of the arrangement, it will not affect the subsequent assembly and use of the cover 1 and the heat dissipation structure 2, or the connection between the cover 1 and the bottom shell 4. It should be noted that the heat dissipation structure 2 is located in the middle of the cover 1, and the edge of the cover 1 has a connecting position 11, such as... Figure 3 As shown. The connecting structure 3 is located on the side of the cover 1. The connecting structure 3 is frame-shaped and is actually a frame used to connect the cover 1 and the bottom shell 4. One side of the connecting structure 3 is connected to the connecting position 11 of the cover 1, and the other side is connected to the bottom shell 4. The function of the connecting structure 3 is to realize the connection between the cover 1 and the bottom shell 4. The bottom shell 4 is a groove 41 with one end open. After the cover 1 is connected to the bottom shell 4 through the connecting structure 3, the heat dissipation structure 2 is located in the groove 41. After the cover 1 and the bottom shell 4 are connected, a cavity for containing the cooling medium is formed between the groove 41 and the cover 1. The heat dissipation structure 2 can exchange heat with the cooling medium in the cavity.

[0023] It should be noted that the cover 1 and the heat dissipation structure 2 are made of copper or copper alloy. When the water-cooled plate is in use, the cover 1 comes into contact with the heat source (e.g., the CPU in a server), transferring the heat to the heat dissipation structure 2, which then carries the heat away from the water-cooled plate through the cooling medium. Copper and copper alloys have excellent thermal conductivity; using copper or copper alloy for the cover 1 and heat dissipation structure 2 as the heat transfer medium ensures efficient heat dissipation of the water-cooled plate. The connecting structure 3 and the bottom shell 4 are made of aluminum or aluminum alloy, and the surfaces of the heat dissipation structure 2 and the cover 1 facing the bottom shell 4 are coated with aluminum powder or aluminum alloy powder. Specifically, the materials used for the cover 1, heat dissipation structure 2, and bottom shell 4 are different: the cover 1 and heat dissipation structure 2 are made of copper, and the bottom shell 4 is made of aluminum. Because copper and aluminum are placed in the same cooling medium, a potential difference exists, which can cause galvanic corrosion, leading to a decrease in the thermal conductivity of the water-cooled plate or damage. Therefore, to avoid galvanic corrosion between the cover 1, the heat dissipation structure 2, and the bottom shell 4, aluminum powder or aluminum alloy powder needs to be sprayed onto the surfaces of the heat dissipation structure 2 and the cover 1 facing the bottom shell 4. After spraying, the materials of the surfaces of the heat dissipation structure 2 and the cover 1 facing the bottom shell 4 are the same as the materials of the bottom shell 4. Even if the heat dissipation structure 2 and the cover 1 are in the same cooling medium as the bottom shell 4, galvanic corrosion will not occur, thus extending the service life of the water-cooled plate.

[0024] It should also be noted that the material of connecting structure 3 is the same as that of the bottom shell 4, both being aluminum or aluminum alloy, to facilitate welding between connecting structure 3 and bottom shell 4. Specifically, connecting structure 3 and bottom shell 4 are fixedly connected by welding. The welding method can be friction stir welding or laser welding; regardless of the method used, the same technical effect can be achieved. In this embodiment, friction stir welding is preferred, as it can fuse the two objects being welded into one, resulting in higher strength between the two structures after welding using friction stir welding compared to general welding processes. Using friction stir welding in the water-cooled plate ensures the pressure-bearing capacity of the water-cooled plate. It should be noted that in this embodiment, the material of connecting structure 3 is the same as that of bottom shell 4, both being aluminum or aluminum alloy. After welding connecting structure 3 and bottom shell 4 together using friction stir welding, the leaching is still aluminum, and no further processing is required at the welded area between connecting structure 3 and bottom shell 4.

[0025] The materials of the cover 1 and the heat dissipation structure 2 are selected as copper or copper alloy, and the materials of the connecting structure 3 and the bottom shell 4 are selected as aluminum and aluminum alloy. This saves manufacturing costs while improving heat dissipation quality and efficiency. Furthermore, aluminum powder or aluminum alloy powder is sprayed on the surface of the cover 1 and the heat dissipation structure 2 facing the bottom shell 4 to avoid galvanic corrosion.

[0026] In this embodiment, the manufacturing process of the copper-aluminum composite water-cooled plate is as follows: The heat dissipation structure 2 is fixed to the cover 1; then, the cover 1 with the heat dissipation structure 2 is fixed to the connecting structure 3; aluminum powder or aluminum alloy powder is sprayed onto the side of the cover 1 where the heat dissipation structure 2 is located, so that the side of the cover 1 and the heat dissipation structure 2 facing the bottom shell 4 is covered with an aluminum or aluminum alloy coating; finally, the cover 1 and the bottom shell 4 are fixed together using the connecting structure 3, thus completing the fabrication of the water-cooled plate. The water-cooled plate in this embodiment has a simple installation method. The cover 1 and the heat dissipation structure 2 are made of copper or copper alloy, while the connecting structure 3 and the bottom shell 4 are made of aluminum and aluminum alloy. Spraying aluminum powder or aluminum alloy powder onto the side of the cover 1 and the heat dissipation structure 2 facing the bottom shell 4 prevents galvanic corrosion with the bottom shell 4, thus extending the service life of the water-cooled plate. Furthermore, the use of both copper and aluminum materials provides high heat transfer efficiency while controlling costs, making it suitable for large-scale application.

[0027] As an optional implementation method, such as Figure 2 As shown, a connecting recess 31 is provided on the side of the connecting structure 3 that connects to the cover 1. The connecting recess 31 and the cover 1 are clearance-fitted. Specifically, the connecting structure 3 is located on the side of the cover 1 and is a frame. One side of the connecting structure 3 connects to the cover 1. To facilitate the connection with the cover 1, a connecting recess 31 is provided on the connecting structure 3, extending downward from the middle of the top of the connecting structure 3. The connecting recess 31 and the cover 1 are clearance-fitted. After the connecting recess 31 is installed on the cover 1, it will be fixedly connected by welding to ensure assembly accuracy. The downward extension depth of the connecting recess 31 is consistent with the thickness of the cover 1. After the connection is completed, as shown... Figure 1 , Figure 4 As shown, the surfaces of the cover 1 and the connecting structure 3 are relatively flat, facilitating contact between the cover 1 and the heat source. In this embodiment, a connecting countersunk platform 31 is provided on the connecting structure 3 to facilitate the installation and welding between the cover 1 and the connecting structure 3. In other embodiments, the connecting countersunk platform 31 may not be provided, as long as the connecting structure 3 can be connected to the cover 1 and its surface is flat. It should be noted that the cover 1 and the connecting structure 3 are also connected by welding. The welding method is friction stir welding or laser welding. The specific welding method is not specifically selected in this embodiment.

[0028] As an optional implementation method, such as Figure 2 , Figure 4As shown, a recessed platform 42 extends downward from the top of the inner wall of the slot of the bottom shell 4, and the recessed platform 42 is clearance-fitted with the connecting structure 3. Specifically, a recessed platform 42 extends downward from the top of the inner wall of the slot 41 of the bottom shell 4, and the recessed platform 42 facilitates the installation and fixation of the connecting structure 3 and the bottom shell 4. It should be noted that the depth of the recessed platform 42 can be the same as or different from the thickness of the connecting structure 3, depending on the actual situation of the heat source to be contacted. In this embodiment, the depth of the recessed platform 42 can be selected to be the same as the thickness of the connecting structure 3. After the connecting structure 3 is installed on the recessed platform 42 of the bottom shell 4, it is located on the same plane as the top of the bottom shell 4 and the top of the cover 1, such as... Figure 1 As shown, this design ensures the flatness of the cover 1, connecting structure 3, and bottom shell 4 after assembly, while also facilitating subsequent contact between the water-cooled plate and the heat source. The connecting structure 3 and the bottom shell recess 42 have a clearance fit, which facilitates assembly before welding while ensuring assembly accuracy.

[0029] As an optional implementation, the length of the heat dissipation structure 2 is less than the distance between the bottom wall of the base platen 42 and the bottom wall of the groove 41. Specifically, after the cover 1 is connected to the base 4 by the connecting structure 3 and the base platen 42, the heat dissipation structure 2 is located inside the groove 41 of the base 4. In order not to affect the connection between the cover 1 and the base 4, the height of the heat dissipation structure 2 needs to be limited. Therefore, the height of the heat dissipation structure 2 must be less than the height between the bottom wall of the base platen 42 and the bottom wall of the base 4 to avoid contact between the heat dissipation structure 2 and the bottom wall of the housing, and to avoid interference between the cover 1 and the base 4 during installation.

[0030] As an optional implementation method, such as Figure 2-4 As shown, the heat dissipation structure 2 includes multiple heat dissipation components, which are evenly arranged on the cover 1. The heat dissipation components are serrated fins, extruded fins, or heat dissipation pillars. Specifically, the heat dissipation structure 2 consists of multiple serrated fins, extruded fins, or heat dissipation pillars disposed on one side of the cover 1. Multiple heat dissipation components are provided and evenly arranged on the cover 1. In this embodiment, the heat dissipation components in the heat dissipation structure 2 are preferably serrated fins, as serrated fins have the best heat dissipation effect and the lowest manufacturing cost.

[0031] It should be noted that in this embodiment, the heat dissipation structure 2 and the cover 1 can be two separate components or an integrally connected unit. If they are two separate components, the heat dissipation structure 2 and the cover 1 can be fixedly connected by welding. If they are an integral structure, the specific manufacturing process is as follows: a whole copper plate is selected, and a tooth-removing machine is used to tooth the copper plate, forming multiple heat dissipation components (i.e., toothed fins) on the copper plate, ultimately resulting in the cover 1 and the heat dissipation structure 2 integrally connected to the cover 1. The multiple heat dissipation components in the heat dissipation structure 2 are arranged along the water inlet 43 and water outlet 44 at both ends of the side plate. In this embodiment, the heat dissipation structure 2 and the cover 1 are an integral structure.

[0032] As an optional implementation method, such as Figure 2 As shown, the bottom shell 4 has a water inlet 43 and a water outlet 44 at both ends. The water inlet 43 is used to introduce the cooling medium into the cavity formed by the bottom shell 4 and the cover 1, and the water outlet 44 is used to lead the cooling medium outward after heat exchange. The water inlet 43 is located at one end of the bottom shell 4, and the water outlet 44 is located at the other end of the bottom shell 4, and both are connected to the inside of the tank 41. The water inlet 43 is used to introduce the cooling medium into the cavity formed by the bottom shell 4 and the cover 1, and the water outlet 44 is used to lead the cooling medium outward from the cavity after heat exchange, which can ensure the normal heat dissipation of the water-cooled plate. Specifically, there should be at least one water inlet 43 and at least one water outlet 44. The specific number of water inlets 43 and water outlets 44 can be selected by comprehensively considering factors such as the usage environment of the water-cooled plate, the flow rate, and the pipe diameter. It should be noted that the number of water inlets 43 and water outlets 44 should be equal.

[0033] As an optional implementation, the water inlet 43 and the water outlet 44 are made of aluminum or aluminum alloy. Choosing aluminum or aluminum alloy as the material for the water inlet 43 and the water outlet 44, which is the same as the material of the bottom shell 4, can prevent galvanic corrosion between the water inlet 43 and the water outlet 44 and the bottom shell 4.

[0034] The embodiment is merely a special case and does not indicate that this utility model is implemented in such a way.

[0035] The above description is merely a preferred embodiment of the present utility model. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present utility model. Furthermore, under the teachings of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present utility model.

Claims

1. A copper-aluminum composite water-cooled plate, characterized in that, include: Cover (1), heat dissipation structure (2), connecting structure (3) and bottom shell (4); The heat dissipation structure (2) is located on one side of the cover (1) and is fixedly connected to the cover (1); The connecting structure (3) is located on the side of the cover (1), with one side connected to the cover (1) and the other side connected to the bottom shell (4); The bottom shell (4) is a groove (41) with one end open. After the cover (1) is connected to the opening of the bottom shell (4) through the connecting structure (3), the heat dissipation structure (2) is located in the groove (41), and the cover (1) and the bottom shell (4) form a cavity for containing the cooling medium. The heat dissipation structure (2) can exchange heat with the cooling medium in the cavity. The cover (1) and the heat dissipation structure (2) are made of copper or copper alloy, and the connecting structure (3) and the bottom shell (4) are made of aluminum or aluminum alloy; aluminum powder or aluminum alloy powder is sprayed on the surface of the heat dissipation structure (2) and the cover (1) facing the bottom shell (4).

2. The copper-aluminum composite water-cooled plate according to claim 1, characterized in that, A connecting platform (31) is provided on the side of the connecting structure (3) that is connected to the cover (1), and the connecting platform (31) and the cover (1) are in clearance fit.

3. The copper-aluminum composite water-cooled plate according to claim 1, characterized in that, The top of the groove inner wall of the bottom shell (4) is provided with a bottom shell recess (42) extending downward, and the bottom shell recess (42) and the connecting structure (3) are in clearance fit.

4. The copper-aluminum composite water-cooled plate according to claim 3, characterized in that, The heat dissipation structure (2) includes multiple heat dissipation components, which are evenly arranged on the cover (1).

5. The copper-aluminum composite water-cooled plate according to claim 4, characterized in that, The length of the heat dissipation component is less than the distance between the bottom wall of the bottom shell platform (42) and the bottom wall of the tank (41).

6. The copper-aluminum composite water-cooled plate according to claim 5, characterized in that, The heat dissipation component is a spade-shaped fin, an extruded fin, or a heat dissipation column.

7. The copper-aluminum composite water-cooled plate according to claim 1, characterized in that, The cover (1) and the connecting structure (3) are both welded together, as are the connecting structure (3) and the bottom shell (4).

8. The copper-aluminum composite water-cooled plate according to claim 1, characterized in that, The bottom shell (4) is provided with a water inlet (43) and a water outlet (44) at both ends. The water inlet (43) is used to introduce the cooling medium into the cavity formed by the bottom shell (4) and the cover (1), and the water outlet (44) is used to lead out the cooling medium after heat exchange.

9. The copper-aluminum composite water-cooled plate according to claim 8, characterized in that, The number of water inlets (43) is at least one, and the number of water outlets (44) is at least one.

10. The copper-aluminum composite water-cooled plate according to claim 8, characterized in that, The water inlet (43) and water outlet (44) are made of aluminum or aluminum alloy.

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