Copper and aluminum composite heat dissipation structure

Abstract

The utility model relates to a copper and aluminum composite heat dissipation structure, which belongs to the technical field of heat dissipation and comprises an aluminum plate (3). The cover plate (1) is mounted on the heat dissipation surface of the aluminum plate (3), and the cover plate (1) and the aluminum plate (3) define a sealing cavity; the heat dissipation areas are arranged in the sealing cavity at intervals, and every two adjacent heat dissipation areas communicate with each other; the heat dissipation module (2) is arranged in the heat dissipation area, and a plurality of copper heat dissipation needles (21) are arranged on the upper surface of the heat dissipation module (2) in an array mode. The main body supporting structure of the heat dissipation structure is the aluminum plate, the heat dissipation needles of the heat dissipation module are copper heat dissipation needles, and compared with a heat dissipation structure completely made of copper, the heat dissipation structure is basically the same in heat dissipation capacity, smaller in weight and lower in cost; compared with a heat dissipation structure which is completely made of aluminum, the heat dissipation structure is better in heat dissipation performance.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation, in particular to a copper and aluminum composite heat dissipation structure. Background Art

[0002] As a core component of new energy vehicles, the performance of the electric drive system directly affects the power, economy and reliability of the entire vehicle.

[0003] In the electric drive system, the power module is a crucial component that is responsible for converting electrical energy into mechanical energy to drive the vehicle. However, since the power module generates a lot of heat during operation, if the heat cannot be dissipated in a timely and effective manner, the module temperature will rise, which will affect its performance and life.

[0004] In the design of the existing liquid cooling system for power modules, the mainstream heat dissipation structure in the industry currently adopts copper or aluminum. Therefore, when choosing a radiator, it is often necessary to choose between strong heat dissipation capacity and low cost. Relatively speaking, copper has stronger heat dissipation capacity, but higher cost and lower mechanical strength; aluminum has relatively weaker heat dissipation capacity, but lower cost and higher mechanical strength. Utility Model Content

[0005] The purpose of the utility model is to provide a copper and aluminum composite heat dissipation structure in order to overcome at least one of the defects of the above-mentioned prior art, and the heat dissipation structure can increase the strength while the heat dissipation capacity remains basically unchanged.

[0006] Aluminum alloys have high thermal (electrical) conductivity, light weight, high strength, good ductility, electromagnetic wave shielding rate and other characteristics, and are easy to process and form. They have superior characteristics to high-conductivity and high-conductivity copper alloys. With the rapid development of industry and changes in consumer demand, they are widely cross-utilized. In some occasions, it is necessary to connect aluminum alloys and copper alloys to form a composite structure for special performance requirements, which can reduce the weight of the structure and save materials. In particular, copper alloys have been widely used at present. Since aluminum alloys are lighter than copper alloys but cheaper, aluminum alloys as structural materials will inevitably involve connections with copper alloys.

[0007] The purpose of the utility model can be achieved through the following technical solutions:

[0008] A copper and aluminum composite heat dissipation structure, comprising:

[0009] Aluminum sheet;

[0010] A cover plate installed on the heat dissipation surface of the aluminum plate, which is enclosed with the aluminum plate to form a sealed cavity;

[0011] A plurality of heat dissipation areas are arranged at intervals in the sealed cavity, and two adjacent heat dissipation areas are connected;

[0012] The heat dissipation module is arranged in the heat dissipation area, and a plurality of copper heat dissipation pins are arranged in an array on the upper surface thereof.

[0013] Among them, the aluminum plate is the base plate, which plays the role of the main supporting structure in the heat dissipation structure.

[0014] Furthermore, an inlet hole and an outlet hole are respectively provided at both ends of the aluminum plate, and the sealed cavity is located between the inlet hole and the outlet hole; the inlet hole and the outlet hole are respectively connected to the sealed cavity.

[0015] Furthermore, an embedding groove is arranged around the heat dissipation area, and an embedding protrusion matching the embedding groove is arranged around the heat dissipation module; the embedding protrusion is embedded in the embedding groove.

[0016] Furthermore, the interlocking protrusions are connected by welding.

[0017] Furthermore, a plurality of power module installation areas are arranged at intervals on the back side of the heat dissipation surface of the aluminum plate, and the positions of the power module installation areas are opposite to the positions of the heat dissipation areas.

[0018] Furthermore, the area of ​​the power module installation region is not larger than the area of ​​the heat dissipation region.

[0019] Furthermore, the plurality of heat dissipation areas are arranged at equal intervals.

[0020] Furthermore, there are at least three heat dissipation areas.

[0021] Further, the shape of the copper heat dissipation pin is one or more of cylindrical, flat, T-shaped or L-shaped. Preferably, the shape of the copper heat dissipation pin is cylindrical or flat.

[0022] Compared with the prior art, the utility model provides a heat dissipation structure of a copper-aluminum composite. The main supporting structure of the heat dissipation structure is an aluminum plate, and the heat dissipation pins of the heat dissipation module are copper heat dissipation pins. Compared with the heat dissipation structure made entirely of copper, the heat dissipation structure of the utility model has basically the same heat dissipation capacity, and is lighter and less expensive; compared with the heat dissipation structure made entirely of aluminum, the heat dissipation structure of the utility model has better heat dissipation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of the heat dissipation structure of copper and aluminum composite in the embodiment;

[0024] Figure 2 for Figure 1 Partial view of area A in the middle;

[0025] As shown in the figure: 1-cover plate; 2-heat dissipation module; 21-copper heat dissipation pin; 3-aluminum plate; 4-inlet hole; 5-outlet hole. DETAILED DESCRIPTION

[0026] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0027] Example

[0028] See also Figure 1 , 2 , a copper and aluminum composite heat dissipation structure, comprising:

[0029] Aluminum plate 3;

[0030] The cover plate 1 is installed on the heat dissipation surface of the aluminum plate 3, and the cover plate 1 and the aluminum plate 3 are enclosed to form a sealed cavity;

[0031] A plurality of heat dissipation areas are arranged at intervals in the sealed cavity, and two adjacent heat dissipation areas are connected;

[0032] The heat dissipation module 2 disposed in the heat dissipation area has a plurality of copper heat dissipation pins 21 arranged in an array on its upper surface.

[0033] In this embodiment, an inlet hole 4 and an outlet hole 5 are respectively provided at both ends of the aluminum plate 3, and the sealed cavity is located between the inlet hole 4 and the outlet hole 5; the inlet hole 4 and the outlet hole 5 are respectively connected to the sealed cavity.

[0034] In this embodiment, an embedding groove is arranged around the heat dissipation area, and an embedding protrusion matching the embedding groove is arranged around the heat dissipation module 2; the embedding protrusion is embedded in the embedding groove, and the embedding protrusion is connected to the embedding protrusion by welding.

[0035] In this embodiment, a plurality of power module installation areas are arranged at intervals on the back of the heat dissipation surface of the aluminum plate 3, and the positions of the power module installation areas are opposite to the positions of the heat dissipation areas. The area of ​​the power module installation area is not larger than the area of ​​the heat dissipation area. The plurality of heat dissipation areas are arranged at equal intervals. Preferably, there are at least three heat dissipation areas.

[0036] In this embodiment, the shape of the copper heat dissipation pin 21 is one or more of cylindrical, flat, T-shaped or L-shaped. Preferably, the shape of the copper heat dissipation pin 21 is cylindrical or flat.

[0037] The main support structure of the heat dissipation structure of this embodiment is an aluminum plate, and the heat dissipation pins of the heat dissipation module are copper heat dissipation pins. During the cooling process, the cooling medium enters the sealed cavity from the inlet hole 4, fully exchanges heat with the copper heat dissipation pins, and then flows out from the outlet hole 5. Compared with the heat dissipation structure made entirely of copper, the heat dissipation capacity of the heat dissipation structure of the utility model is basically the same, and the weight is smaller and the cost is lower; compared with the heat dissipation structure made entirely of aluminum, the heat dissipation performance of the heat dissipation structure of the utility model is better.

[0038] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A copper and aluminum composite heat dissipation structure, characterized in that: include: Aluminum plate (3); A cover plate (1) mounted on the heat dissipation surface of the aluminum plate (3), which is enclosed with the aluminum plate (3) to form a sealed cavity; A plurality of heat dissipation areas are arranged at intervals in the sealed cavity, and two adjacent heat dissipation areas are connected; A heat dissipation module (2) is arranged in the heat dissipation area, and a plurality of copper heat dissipation pins (21) are arranged in an array on the upper surface thereof.

2. The copper-aluminum composite heat dissipation structure according to claim 1, characterized in that: An inlet hole (4) and an outlet hole (5) are respectively provided at both ends of the aluminum plate (3), and the sealed cavity is located between the inlet hole (4) and the outlet hole (5); The inlet hole (4) and the outlet hole (5) are respectively communicated with the sealing cavity.

3. The copper-aluminum composite heat dissipation structure according to claim 1, characterized in that: An embedding groove is arranged around the heat dissipation area, and an embedding protrusion matching the embedding groove is arranged around the heat dissipation module (2); the embedding protrusion is embedded in the embedding groove.

4. The copper-aluminum composite heat dissipation structure according to claim 3, characterized in that: The engaging protrusions are connected by welding.

5. The copper-aluminum composite heat dissipation structure according to claim 1, characterized in that: A plurality of power module installation areas are arranged at intervals on the back side of the heat dissipation surface of the aluminum plate (3), and the positions of the power module installation areas are opposite to the positions of the heat dissipation areas.

6. The copper-aluminum composite heat dissipation structure according to claim 5, characterized in that: The area of ​​the power module installation area is not larger than the area of ​​the heat dissipation area.

7. The copper-aluminum composite heat dissipation structure according to claim 1, characterized in that: The plurality of heat dissipation areas are arranged at equal intervals.

8. The copper-aluminum composite heat dissipation structure according to claim 1, characterized in that: There are at least three heat dissipation areas.

9. The copper-aluminum composite heat dissipation structure according to claim 1, characterized in that: The shape of the copper heat dissipation pin (21) is one or more of cylindrical, flat, T-shaped or L-shaped.

10. A copper and aluminum composite heat dissipation structure according to claim 1 or 9, characterized in that: The copper heat dissipation pin (21) is cylindrical or flat in shape.

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