A heat sink for a power module

Abstract

A heat dissipation device of a power module comprises a heat dissipation device shell and a plurality of groups of heat dissipation fins mounted on the heat dissipation device shell; the heat dissipation device shell is internally formed with a mounting cavity for mounting a heat generating device; the plurality of groups of heat dissipation fins are arranged on a first side of the heat dissipation device shell opposite to the heat generating device, and the plurality of groups of heat dissipation fins comprise at least one group of straight inclined fins and at least one group of arc-shaped fins. The heat dissipation device of the power module has the advantages that the straight inclined fins can reduce air resistance, the arc-shaped fins can guide air volume to different positions to increase a heat dissipation area, and the straight inclined fins and the arc-shaped fins can be simultaneously arranged to improve heat dissipation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation, and more specifically, to a heat sink for a power module. Background Technology

[0002] As the power of power modules increases, their heat dissipation requirements also increase. Current power module heat sinks generally include a horizontal mounting surface and at least one set of cooling fins mounted on that surface. When a fan blows air onto the mounting surface and the cooling fins, the cooling fins direct the received airflow to their corresponding positions, thus achieving heat dissipation. However, this design results in high air resistance and limits airflow to a straight line, leading to a smaller heat dissipation area and lower heat dissipation efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a heat sink for a power module that not only has low wind resistance but also a large heat dissipation area, thus achieving high heat dissipation efficiency, in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is: to construct a heat sink for a power module, including: a heat sink housing and multiple sets of heat dissipation teeth installed on the heat sink housing; the heat sink housing has an internal cavity for installing a heat-generating device; the multiple sets of heat dissipation teeth are disposed on a first side of the heat sink housing opposite to the heat-generating device, and the multiple sets of heat dissipation teeth include at least one set of oblique straight teeth and at least one set of arc-shaped teeth.

[0005] In the heat sink of the power module described in this utility model, the multiple sets of heat dissipation teeth also include at least one set of horizontal straight teeth.

[0006] In the heat sink of the power module of the present invention, the first side includes a first mounting area, a second mounting area and a third mounting area recessed by a first distance toward the heat-generating device; a first set of helical straight teeth is installed in the first mounting area, a second set of helical straight teeth is installed in the second mounting area and a third set of helical straight teeth is installed in the third mounting area.

[0007] In the heat sink of the power module of the present invention, the first side further includes a fourth mounting area recessed towards the heat-generating device by a second distance, the first distance being greater than the second distance, and a fourth set of helical straight teeth are installed in the fourth mounting area; the fourth mounting area is located between the first mounting area and the second mounting area.

[0008] In the heat sink of the power module described in this utility model, the shape of the oblique straight tooth is a right trapezoid; the base of the right trapezoid is mounted on the first side, the right-angled leg of the right trapezoid is adjacent to the first side of the first side, and the non-right-angled leg of the right trapezoid is adjacent to the second side of the first side; the first side and the second side are horizontal to each other;

[0009] Each helical spur tooth in each group is equidistant from the others.

[0010] In the heat sink of the power module of this utility model, the first side further includes a fifth mounting area recessed a third distance toward the heat-generating device; the third distance is greater than the second distance and less than the first distance; a first set of horizontal straight teeth, a first set of arc-shaped teeth and a second set of arc-shaped teeth are installed in the fifth mounting area; the fifth mounting area is located between the third mounting area and the third side of the first side; the first set of arc-shaped teeth and the second set of arc-shaped teeth are respectively located on both sides of the first set of horizontal straight teeth; the third side is perpendicular to the first side and the second side.

[0011] In the heat sink of the power module described in this utility model, the first group of horizontal straight teeth is arranged in a rectangular shape; the first group of arc-shaped teeth and the second group of arc-shaped teeth are arranged in a fan shape.

[0012] In the heat sink of the power module described in this utility model, the first side further includes a sixth mounting area and a seventh mounting area.

[0013] The sixth mounting area is equipped with a second set of horizontal straight teeth, a third set of horizontal straight teeth, and a third set of arc-shaped teeth; the sixth mounting area is located between the first mounting area and the fourth side of the first side, and the fourth side is parallel to the third side; the third set of arc-shaped teeth is disposed between the second set of horizontal straight teeth and the third set of horizontal straight teeth;

[0014] The seventh mounting area is located between the third mounting area and the second mounting area, and the fourth set of horizontal straight teeth is installed in the seventh mounting area.

[0015] In the heat sink of the power module described in this utility model, the third group of arc-shaped teeth is arranged in a fan shape; the second group of horizontal straight teeth is arranged in a rectangular shape; and the third group of horizontal straight teeth is arranged in a rhomboid shape.

[0016] In the heat sink of the power module described in this utility model, the fourth group of horizontal straight teeth is rectangular in shape and arranged in a rectangular pattern; each horizontal straight tooth in each group of horizontal straight teeth is equidistant from each other.

[0017] The heat sink of the power module implementing this utility model includes a heat sink housing and multiple sets of heat dissipation teeth mounted on the heat sink housing; the heat sink housing has an internal cavity for mounting heat-generating devices; the multiple sets of heat dissipation teeth are disposed on a first side of the heat sink housing opposite to the heat-generating devices, and the multiple sets of heat dissipation teeth include at least one set of oblique straight teeth and at least one set of arc-shaped teeth; by setting oblique straight teeth, wind resistance can be reduced; by setting arc-shaped teeth, airflow can be directed to different positions to increase the heat dissipation area; and by simultaneously setting oblique straight teeth and arc-shaped teeth, heat dissipation efficiency can be improved. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0019] Figure 1 This is a first-angle structural schematic diagram of a preferred embodiment of the heat sink for the power module of this utility model;

[0020] Figure 2 This is a second-angle structural schematic diagram of a preferred embodiment of the heat sink for the power module of this utility model;

[0021] Figure 3 This is a third-angle structural schematic diagram of a preferred embodiment of the heat sink for the power module of this utility model;

[0022] Figure 4 This is a side view of a preferred embodiment of the heat sink for the power module of this utility model;

[0023] Figure 5 This is a side view from another angle of a preferred embodiment of the heat sink of the power module of this utility model. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] Figure 1 This is a first-angle structural schematic diagram of a preferred embodiment of the heat sink for the power module of this utility model. Figure 2 This is a second-angle structural schematic diagram of a preferred embodiment of the heat sink for the power module of this utility model. Figure 3 This is a third-angle structural schematic diagram of a preferred embodiment of the heat sink for the power module of this utility model. Figure 4 This is a side view of a preferred embodiment of the heat sink for the power module of this utility model; Figure 5 This is another side view of a preferred embodiment of the heat sink for the power module of this utility model. (See image.) Figures 1-5 As shown, the heat sink of the power module of this utility model includes a heat sink housing 100 and multiple sets of heat dissipation teeth 210, 220, and 230 mounted on the heat sink housing 100; the heat sink housing 100 has an internal mounting cavity 110 for mounting a heat-generating device; the multiple sets of heat dissipation teeth 210, 220, and 230 are disposed on the first side 120 of the heat sink housing 100 opposite to the heat-generating device, and the multiple sets of heat dissipation teeth include at least one set of oblique straight teeth 210 and at least one set of arc-shaped teeth 230.

[0026] The heat sink of the power module implementing this utility model includes a heat sink housing and multiple sets of heat dissipation teeth mounted on the heat sink housing; the heat sink housing has an internal cavity for mounting heat-generating devices; the multiple sets of heat dissipation teeth are disposed on a first side of the heat sink housing opposite to the heat-generating devices, and the multiple sets of heat dissipation teeth include at least one set of oblique straight teeth and at least one set of arc-shaped teeth; by setting oblique straight teeth, wind resistance can be reduced; by setting arc-shaped teeth, airflow can be directed to different positions to increase the heat dissipation area; and by simultaneously setting oblique straight teeth and arc-shaped teeth, heat dissipation efficiency can be improved.

[0027] In a further preferred embodiment of the present invention, the multiple sets of heat dissipation teeth further include at least one set of horizontal straight teeth 220. By simultaneously setting arc-shaped teeth and horizontal straight teeth, the airflow can be directed to more different positions, thereby increasing the heat dissipation area. By simultaneously setting oblique straight teeth, arc-shaped teeth and horizontal straight teeth, the heat dissipation efficiency can be further improved.

[0028] like Figures 1-5 As shown, the first side 120 includes a first mounting area 121, a second mounting area 122, and a third mounting area 123 recessed towards the heating device by a first distance; a first set of helical straight teeth 211 is installed in the first mounting area 121, a second set of helical straight teeth 212 is installed in the second mounting area 122, and a third set of helical straight teeth 213 is installed in the third mounting area 123. Further as... Figures 1-5 As shown, the first side 120 further includes a fourth mounting area 124 recessed towards the heating device by a second distance, the first distance being greater than the second distance, and a fourth set of helical straight teeth 214 are installed in the fourth mounting area 124; the fourth mounting area 124 is located between the first mounting area 121 and the second mounting area 122.

[0029] In a preferred embodiment of this utility model, each of the helical straight teeth in each group of helical straight teeth 211, 212, 213 and 214 is equidistant from each other, for example, spaced 5 to 10 mm apart, preferably 8 mm apart, and the tooth height can be adjusted according to the height of the heat-generating device to obtain the maximum heat dissipation area.

[0030] Further as Figures 1-5As shown, each of the oblique straight teeth is a right-angled trapezoid; the base of the right-angled trapezoid is mounted on the first side 120, the right-angled leg of the right-angled trapezoid is adjacent to the first side 1211 of the first side 120, and the non-right-angled leg of the right-angled trapezoid is adjacent to the second side 1212 of the first side 120; the first side 1211 and the second side 1212 are horizontal to each other.

[0031] Further as Figures 1-5 As shown, the first side surface 120 further includes a fifth mounting area 125 recessed towards the heat-generating device by a third distance; the third distance is greater than the second distance and less than the first distance. A first set of horizontal straight teeth 221, a first set of arc-shaped teeth 231, and a second set of arc-shaped teeth 232 are installed within the fifth mounting area 125; the fifth mounting area 125 is located between the third mounting area 123 and the third side edge 1213 of the first side surface 120; the first set of arc-shaped teeth 231 and the second set of arc-shaped teeth 232 are respectively located on both sides of the first set of horizontal straight teeth 221; the third side edge 1213 is perpendicular to the first side edge 1211 and the second side edge 1212. The first set of horizontal straight teeth 221 is arranged in a rectangular pattern; the first set of arc-shaped teeth 231 and the second set of arc-shaped teeth 232 are arranged in a fan-shaped pattern. This special arrangement allows airflow to be directed to a wider area, thereby further expanding the heat dissipation area.

[0032] Further as Figures 1-5 As shown, the first side surface 120 further includes a sixth mounting area 126; a second set of horizontal straight teeth 222, a third set of horizontal straight teeth 223, and a third set of arc-shaped teeth 233 are installed in the sixth mounting area 126; the sixth mounting area 126 is located between the first mounting area 121 and the fourth side edge 1214 of the first side surface 120, and the fourth side edge 1214 is parallel to the third side edge 1213; the third set of arc-shaped teeth 233 is disposed between the second set of horizontal straight teeth 222 and the third set of horizontal straight teeth 223. The third set of arc-shaped teeth 233 is arranged in a fan shape; the second set of horizontal straight teeth 222 is arranged in a rectangular shape; and the third set of horizontal straight teeth 223 is arranged in a diamond shape. This special arrangement allows airflow to be directed to a wider area, thereby further expanding the heat dissipation area.

[0033] Further as Figures 1-5 As shown, the first side surface 120 further includes a seventh mounting area 127; the seventh mounting area 127 is located between the third mounting area 123 and the second mounting area 122, and a fourth set of horizontal straight teeth 224 is mounted in the seventh mounting area 127. The fourth set of horizontal straight teeth 224 is rectangular in shape and arranged in a rectangular pattern.

[0034] In a preferred embodiment of this invention, the horizontal straight teeth in each group of horizontal straight teeth 221, 222, and 223 are equidistant from each other, for example, spaced 5-10 mm apart, preferably 8 mm. Their tooth height can be adjusted according to the height of the heat-generating device to obtain the maximum heat dissipation area. In a preferred embodiment of this invention, each group of arc-shaped teeth 231, 232, and 233 is fan-shaped, and their central angle can be designed according to actual needs, ranging from 20 to 90 degrees, preferably 30 to 60 degrees. Of course, the arc-shaped teeth 231, 232, and 233 do not have to be standard fan shapes, as long as they have a certain curvature.

[0035] like Figures 1-5 As shown, the radiator housing 100 is a rectangular housing, therefore the first side 120 is a rectangular flat surface, on which L-shaped limiting frames 1215 and 1216 are provided. The L-shaped limiting frame 1215 surrounds the third side 1213 and part of the second side 1212, that is, partially surrounds the fifth mounting area 125; the L-shaped limiting frame 1216 surrounds the fourth side 1214 and part of the second side 1212, that is, partially surrounds the sixth mounting area 126. This is because the fifth mounting area 125 and the sixth mounting area 126 are located at the ends of the rectangular surface, and the L-shaped limiting frames can protect and limit the various heat dissipation teeth therein.

[0036] Further as Figures 1-5 As shown, the mounting cavity 110 includes multiple mounting cavities 111 and bosses 112. The size of the mounting cavity 111 can be set according to actual conditions to accommodate the heating element installed therein. The bosses 112 can be used to limit the ceramic plate. After the heating element and ceramic plate are installed, the mounting cavity is filled with potting compound to complete the heat sink installation.

[0037] In a preferred embodiment of this invention, by dividing the first side of the radiator housing into different mounting areas, and installing heat dissipation teeth of different shapes therein, wind resistance can be reduced, airflow can be directed to different positions, thereby increasing the heat dissipation area and improving heat dissipation efficiency. For example, by setting horizontal straight teeth and arc-shaped teeth in the fifth mounting area 125 and the sixth mounting area 126, airflow can be guided to places where the fan cannot blow directly, thus expanding the heat dissipation area. By setting oblique straight teeth in the first mounting area 121, the second mounting area 122, the third mounting area 123, and the fourth mounting area 124, wind resistance can be reduced, allowing the airflow generated by the fan to pass through the heat dissipation teeth for heat dissipation more quickly. By setting the first mounting area 121, the second mounting area 122, the third mounting area 123, and the fourth mounting area 124 to be recessed towards the heat-generating device, an inclined surface can be formed for the airflow generated by the fan to pass through, which can further reduce wind resistance and increase airflow. And by setting different mounting areas to be recessed by different distances, it is convenient to install heat-generating devices of different heights in the mounting cavity.

[0038] Although this utility model has been described through specific embodiments, those skilled in the art should understand that various modifications and equivalent substitutions can be made to this utility model without departing from its scope. Furthermore, various modifications can be made to this utility model for specific situations or materials without departing from its scope. Therefore, this utility model is not limited to the specific embodiments disclosed, but should include all embodiments falling within the scope of the claims of this utility model.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heat sink for a power module, characterized in that, include: A radiator housing and multiple sets of heat dissipation teeth mounted on the radiator housing; the radiator housing has an internal mounting cavity for mounting a heat-generating device; the multiple sets of heat dissipation teeth are disposed on a first side of the radiator housing opposite to the heat-generating device, and the multiple sets of heat dissipation teeth include at least one set of oblique straight teeth and at least one set of arc-shaped teeth.

2. The heat sink for the power module according to claim 1, characterized in that, The multiple sets of heat dissipation teeth also include at least one set of horizontal straight teeth.

3. The heat sink for the power module according to claim 2, characterized in that, The first side includes a first mounting area, a second mounting area, and a third mounting area recessed a first distance toward the heating device; a first set of helical straight teeth is installed in the first mounting area, a second set of helical straight teeth is installed in the second mounting area, and a third set of helical straight teeth is installed in the third mounting area.

4. The heat sink for the power module according to claim 3, characterized in that, The first side further includes a fourth mounting area recessed a second distance toward the heating device, the first distance being greater than the second distance, and a fourth set of helical straight teeth are installed in the fourth mounting area; the fourth mounting area is located between the first mounting area and the second mounting area.

5. The heat sink for the power module according to claim 4, characterized in that, The shape of the oblique straight tooth is a right trapezoid; the base of the right trapezoid is mounted on the first side, the right-angled leg of the right trapezoid is adjacent to the first side of the first side, and the non-right-angled leg of the right trapezoid is adjacent to the second side of the first side; the first side and the second side are horizontal to each other; Each set of helical spur teeth is equidistant from each other.

6. The heat sink for the power module according to claim 5, characterized in that, The first side further includes a fifth mounting area recessed a third distance toward the heating device; the third distance is greater than the second distance and less than the first distance; a first set of horizontal straight teeth, a first set of arc-shaped teeth and a second set of arc-shaped teeth are mounted in the fifth mounting area; the fifth mounting area is located between the third mounting area and the third side of the first side; the first set of arc-shaped teeth and the second set of arc-shaped teeth are respectively located on both sides of the first set of horizontal straight teeth; the third side is perpendicular to the first side and the second side.

7. The heat sink for the power module according to claim 6, characterized in that, The first group of horizontal straight teeth is arranged in a rectangular pattern; the first group of arc-shaped teeth and the second group of arc-shaped teeth are arranged in a fan-shaped pattern.

8. The heat sink for the power module according to claim 6, characterized in that, The first side further includes a sixth mounting area and a seventh mounting area; The sixth mounting area is equipped with a second set of horizontal straight teeth, a third set of horizontal straight teeth, and a third set of arc-shaped teeth; the sixth mounting area is located between the first mounting area and the fourth side of the first side, and the fourth side is parallel to the third side; the third set of arc-shaped teeth is disposed between the second set of horizontal straight teeth and the third set of horizontal straight teeth; The seventh mounting area is located between the third mounting area and the second mounting area, and the fourth set of horizontal straight teeth is installed in the seventh mounting area.

9. The heat sink for the power module according to claim 8, characterized in that, The third group of arc-shaped teeth is arranged in a fan shape; the second group of horizontal straight teeth is arranged in a rectangular shape; and the third group of horizontal straight teeth is arranged in a rhomboid shape.

10. The heat sink for the power module according to claim 8, characterized in that, The fourth group of horizontal straight teeth is rectangular in shape and arranged in a rectangular pattern; each horizontal straight tooth in each group of horizontal straight teeth is equidistant from each other.

Images