Heat dissipation support with increased grounding reliability

Abstract

This utility model relates to a heat dissipation bracket for increasing grounding reliability. It includes a bracket body with a contact plane comprising a thermally conductive plane and a grounding plane. Both the thermally conductive plane and the grounding plane abut against the compressor housing. Thermally conductive silicone grease is filled between the thermally conductive plane and the compressor housing. The thermally conductive plane and the grounding plane are located on the same plane with a gap between them; alternatively, they are not located on the same plane. This utility model not only ensures proper heat dissipation for the controller by filling the space between the heat dissipation bracket and the compressor housing with thermally conductive silicone grease, but also ensures proper grounding of the heat dissipation bracket, thus improving the pass rate of electromagnetic compatibility tests for electric compressors.

Description

Technical Field

[0001] This utility model relates to the field of electric compressor technology, and in particular to a heat dissipation bracket that increases grounding reliability. Background Technology

[0002] Electric compressors are typically used in continuous heat exchange cycles to achieve temperature regulation. They are widely used in new energy vehicles, energy storage systems, industrial and cold chain logistics, and other fields. During operation, the internal components of the electric compressor controller generate a lot of heat. The stable operation of the controller is highly dependent on an efficient heat dissipation design. The current heat dissipation method is to attach the heat sink bracket of the controller to the compressor housing with thermal grease (paste). The thermal grease uses its excellent thermal conductivity to transfer the heat generated by the components from the heat sink bracket to the housing to achieve heat dissipation.

[0003] To ensure that the electric compressor can operate normally in a complex electromagnetic environment without interfering with other equipment or the environment, the compressor housing needs to be grounded during operation. The heat sink bracket is indirectly grounded by making close contact with the housing. However, due to the presence of thermal grease, the heat sink bracket cannot make close contact with the housing, which poses a risk that the electric compressor may fail the EMC (electromagnetic compatibility) test. Summary of the Invention

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the problem that the thermal grease between the heat dissipation bracket and the compressor housing in the prior art prevents them from making close contact, resulting in the heat dissipation bracket not being grounded and the electric compressor failing the electromagnetic compatibility test. In this way, a heat dissipation bracket that increases grounding reliability can not only fill the space between the heat dissipation bracket and the compressor housing with thermal grease to ensure normal heat dissipation of the controller, but also ensure that the heat dissipation bracket is properly grounded, thereby improving the pass rate of electromagnetic compatibility test of electric compressor.

[0005] To solve the above-mentioned technical problems, this utility model provides a heat dissipation bracket to increase grounding reliability, comprising,

[0006] The main body of the bracket has a contact plane, which includes a heat-conducting plane and a grounding plane. Both the heat-conducting plane and the grounding plane abut against the compressor housing. Thermal grease is filled between the heat-conducting plane and the compressor housing. The heat-conducting plane and the grounding plane are located on the same plane and there is a gap between them. Alternatively, the heat-conducting plane and the grounding plane are not located on the same plane.

[0007] In one embodiment of the present invention, the support body is provided with a grease trap, which is disposed between the heat-conducting plane and the grounding plane.

[0008] In one embodiment of this utility model, the bracket body is provided with connecting feet, and the end face of the connecting feet is provided with screw holes.

[0009] In one embodiment of this utility model, the contact plane and the connecting foot are located on both sides of the bracket body.

[0010] In one embodiment of the present invention, the support body is provided with a support foot, the support foot and the connecting foot are disposed on the same side of the support body, and the length of the support foot is greater than the length of the connecting foot.

[0011] In one embodiment of the present invention, the bracket body is provided with a plurality of connecting feet, and the supporting feet are located outside the area formed by the lines connecting the plurality of connecting feet.

[0012] In one embodiment of this utility model, the grounding plane is located on both sides of the heat-conducting plane, or the heat-conducting plane is located on both sides of the grounding plane.

[0013] In one embodiment of this utility model, both the heat-conducting plane and the grounding plane are provided with screw holes.

[0014] In one embodiment of this utility model, the area of ​​the grounding plane is smaller than the area of ​​the heat-conducting plane.

[0015] In one embodiment of this utility model, the support body is configured as a flat plate, and the contact plane is located on the large surface of the flat plate.

[0016] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:

[0017] The heat dissipation bracket for increasing grounding reliability described in this utility model has a grounding plane that directly contacts the compressor housing, ensuring proper grounding of the heat dissipation bracket and improving the pass rate of electromagnetic compatibility testing for electric compressors. Thermally conductive silicone grease is filled in the gap between the thermally conductive plane and the compressor housing to ensure that the heat from the heat dissipation bracket can be properly transferred to the transport housing for heat dissipation, guaranteeing normal heat dissipation of the compressor controller. By placing the thermally conductive plane and the grounding plane on different planes, the height difference between them when the heat dissipation bracket is pressed against the compressor housing ensures that the thermally conductive silicone grease on the thermally conductive plane cannot diffuse to the grounding plane. When the thermally conductive plane and the grounding plane are on the same plane, a gap is provided between them to buffer the diffused thermally conductive silicone grease, preventing it from spreading to the grounding plane, thus effectively ensuring the grounding of the heat dissipation bracket. Attached Figure Description

[0018] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the heat dissipation bracket, compressor housing, and controller structure in a preferred embodiment of the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure of the heat sink bracket shown in the side view;

[0021] Figure 3 for Figure 1 The top view of the heat sink bracket is shown as a structural schematic diagram.

[0022] Explanation of reference numerals in the accompanying drawings: 1. Main body of the bracket; 11. Grounding plane; 12. Heat-conducting plane; 13. Gap; 14. Screw hole; 15. Connecting foot; 16. Support foot; 17. Mounting position; 18. Grease trap; 19. Sloping surface; 2. Compressor housing; 3. Controller cover; 4. Controller; 5. Screw; 6. Screw. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0024] Reference Figure 1 and Figure 3 As shown, in one embodiment of this utility model, a heat dissipation bracket for increasing grounding reliability is disclosed. This bracket is fixed to the compressor housing 2, and the compressor controller 4 is mounted on the heat dissipation bracket. The heat generated by the controller 4 is transferred to the heat dissipation bracket. The heat dissipation bracket includes...

[0025] The support body 1 has a contact plane, which includes a heat-conducting plane 12 and a grounding plane 11. Both the heat-conducting plane 12 and the grounding plane 11 abut against the compressor housing 2. Thermally conductive silicone grease is filled between the heat-conducting plane 12 and the compressor housing 2. The heat-conducting plane 12 and the grounding plane 11 are located on the same plane and a gap 13 is provided between them. Alternatively, the heat-conducting plane 12 and the grounding plane 11 are not located on the same plane.

[0026] The heat dissipation bracket described in this embodiment, which increases grounding reliability, presses the bracket body 1 tightly against the surface of the compressor housing 2. The grounding plane 11 directly contacts the compressor housing 2, ensuring proper grounding of the heat dissipation bracket. Thermally conductive silicone grease is filled in the gap between the thermally conductive plane 12 and the compressor housing 2. The excellent thermal conductivity of the silicone grease transfers the heat generated by the controller 4 to the compressor housing 2 for heat dissipation, ensuring proper heat dissipation of the controller 4. If, to match the irregular surface of the compressor housing 2, the grounding plane 11 and the thermally conductive plane 12 are located on different planes, then thermally conductive silicone grease is applied to the grounding plane 11. On the hot plane 12, the height difference between the heat-conducting plane 12 and the grounding plane 11 is used to block the thermal grease. When the grounding plane 11 and the heat-conducting plane 12 are on the same plane, the gap 13 is used to buffer the thermal grease. The width of the gap 13 is the distance between the grounding plane 11 and the heat-conducting plane 12. When the heat sink bracket is pressed on the compressor housing 2, once the thermal grease diffuses outward, the gap 13 and the height difference block and buffer the thermal grease so that it cannot diffuse to the grounding plane 11, ensuring the normal grounding of the heat sink bracket and improving the pass rate of the electromagnetic compatibility test of the electric compressor.

[0027] Reference Figure 2 As shown, in one embodiment of this utility model, in order to more effectively block the thermal grease, the surface of the bracket body 1 is recessed to form a grease storage groove 18. The grease storage groove 18 is disposed between the ground plane 11 and the thermally conductive plane 12. When the heat dissipation bracket is assembled, the edge of the thermal grease diffuses out of the thermally conductive plane 12 and eventually overflows into the grease storage groove 18. The grease storage groove 18 is used to collect the overflowed thermal grease and prevent the thermal grease from continuing to diffuse towards the ground plane 11.

[0028] Reference Figure 1 As shown, in one embodiment of this utility model, the bracket body 1 is provided with a connecting foot 15, and the end face of the connecting foot 15 is provided with a screw hole. The connecting foot 15 is fixedly connected to the circuit board of the controller 4 by screws 5 and screw holes, thereby fixing the controller 4 to one side of the bracket body 1.

[0029] Reference Figure 2 As shown, in one embodiment of this utility model, the bracket body 1 is provided with four connecting feet 15, which are arranged in an array to connect to the four connection points of the circuit board respectively.

[0030] Reference Figure 2 and Figure 3 As shown, in one embodiment of this utility model, the contact plane and the connecting foot 15 are located on opposite sides of the bracket body 1, ensuring that after the controller 4 is connected to the connecting foot 15, the heat generated by the controller 4 is transferred to the heat-conducting plane 12 through the shortest path.

[0031] Reference Figure 2 As shown, in one embodiment of this utility model, the bracket body 1 is provided with a support foot 16. The support foot 16 and the connecting foot 15 are located on the same side of the bracket body 1, and the support foot 16 is located outside the area formed by the line connecting the four connecting feet 15. When the circuit board is connected to the connecting foot 15, the support foot 16 is exposed outside the circuit board. When the controller cover 3 is closed and the controller 4 is tightened with screws, the fulcrum at the bottom of the cover 3 will press down on the support foot 16, so that the heat dissipation bracket is further close to the compressor housing.

[0032] Reference Figure 2 As shown, in one embodiment of the present invention, the bracket body 1 is provided with two support feet 16, which are located on both sides of the circuit board and are used to cooperate with the two fulcrums of the controller cover 3 to ensure that the forces on both sides of the bracket body 1 are uniform and the bracket body 1 is tightly fitted with the compressor housing 2.

[0033] Reference Figure 2 As shown, in one embodiment of this utility model, the length of the support leg 16 along the direction of the compressor housing 2 is greater than the length of the connecting leg 15 along the direction of the compressor housing 2. This can be understood as follows: when the bracket body 1 is placed horizontally, the height of the support leg 16 is greater than the height of the connecting leg 15. When the circuit board is connected to the four connecting legs 15, the support legs 16 on both sides can be used to position the circuit board, ensuring that the connecting holes of the circuit board are quickly aligned with the screw holes of the connecting legs 15, thereby improving assembly efficiency.

[0034] Reference Figure 2 As shown, in one embodiment of this utility model, the support foot 16 is provided with an inclined surface 19, which is used to guide the circuit board so that the side of the circuit board can slide down along the inclined surface 19, ensuring that the connection hole of the circuit board is quickly aligned with the screw hole of the connection foot 15.

[0035] Reference Figure 3 As shown, in one embodiment of the present invention, the contact plane includes a heat-conducting plane 12 and two grounding planes 11. The two grounding planes 11 are located on both sides of the heat-conducting plane 12, and heat is conducted through the middle of the support body 1, while the two sides of the support body 1 are grounded.

[0036] In one embodiment of the present invention, the contact plane includes two heat-conducting planes 12 and a grounding plane 11. The two heat-conducting planes 12 are located on both sides of the grounding plane 11, and the middle part of the bracket body 1 is grounded, while the two sides of the bracket body 1 are used for heat conduction.

[0037] Reference Figure 3As shown, in one embodiment of this utility model, both the heat-conducting plane 12 and the grounding plane 11 are provided with screw holes 14, and the bracket body 1 is further connected to the compressor housing 2 and the circuit board of the controller 4 through the screw holes 14.

[0038] Reference Figure 3 As shown, in one embodiment of this utility model, the area of ​​the grounding plane 11 is smaller than the area of ​​the heat-conducting plane 12. By increasing the area ratio of the heat-conducting plane 12, the contact area between the thermal grease and the compressor housing 2 is increased, thereby improving the heat dissipation effect of the heat sink bracket.

[0039] Reference Figure 2 As shown, in one embodiment of this utility model, the bracket body 1 is configured as a flat plate, and the contact plane is located on the large surface of the flat plate, which is beneficial to increasing the contact area between the heat dissipation bracket and the compressor housing 2 and improving the heat dissipation effect. The large surface refers to the side with the largest area of ​​the flat plate.

[0040] In one embodiment of the present invention, the bracket body 1 is provided with a mounting position 17 for mounting the controller 4 in the middle.

[0041] The working principle of the heat dissipation bracket that increases grounding reliability described in this utility model is as follows:

[0042] The controller 4 is fixed to the heat dissipation bracket using screw 5. Thermal grease is applied to the thermally conductive surface 12. The bracket body 1 is then pressed tightly onto the compressor housing 2, so that the thermal grease on the grounding surface 11 and the thermally conductive surface 12 adheres tightly to the surface of the compressor housing 2. Then, the controller cover 3 is placed on the controller 4 and fixed to the compressor housing 2 with screw 6. When the compressor is running, the heat generated by the controller 4 is transferred to the heat dissipation bracket. The heat from the heat dissipation bracket is transferred to the compressor housing 2 through the thermal grease, and finally transferred to the air or to the liquid cooling channel inside the compressor housing 2, thus completing the heat dissipation.

[0043] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A heat dissipation bracket for increasing grounding reliability, characterized in that, include, The main body of the bracket has a contact plane, which includes a heat-conducting plane and a grounding plane. Both the heat-conducting plane and the grounding plane abut against the compressor housing. Thermal grease is filled between the heat-conducting plane and the compressor housing. The heat-conducting plane and the grounding plane are located on the same plane and there is a gap between them. Alternatively, the heat-conducting plane and the grounding plane are not located on the same plane.

2. A heat dissipation bracket for increasing grounding reliability according to claim 1, characterized in that, The main body of the support is provided with a grease trap, which is located between the heat-conducting plane and the grounding plane.

3. A heat dissipation bracket for increasing grounding reliability according to claim 1, characterized in that, The main body of the bracket is provided with connecting feet, and the end face of the connecting feet is provided with screw holes.

4. A heat dissipation bracket for increasing grounding reliability according to claim 3, characterized in that, The contact plane and the connecting foot are located on both sides of the bracket body.

5. A heat dissipation bracket for increasing grounding reliability according to claim 3, characterized in that, The main body of the bracket is provided with a support leg, and the support leg and the connecting leg are located on the same side of the main body of the bracket. The length of the support leg is greater than the length of the connecting leg.

6. A heat dissipation bracket for increasing grounding reliability according to claim 5, characterized in that, The main body of the bracket is provided with multiple connecting feet, and the supporting feet are located outside the area formed by the lines connecting the multiple connecting feet.

7. A heat dissipation bracket for increasing grounding reliability according to claim 1, characterized in that, The grounding plane is located on both sides of the heat-conducting plane, or the heat-conducting plane is located on both sides of the grounding plane.

8. A heat dissipation bracket for increasing grounding reliability according to claim 1, characterized in that, Both the heat-conducting plane and the grounding plane are provided with screw holes.

9. A heat dissipation bracket for increasing grounding reliability according to claim 1, characterized in that, The area of ​​the grounding plane is smaller than the area of ​​the heat-conducting plane.

10. A heat dissipation bracket for increasing grounding reliability according to claim 1, characterized in that, The main body of the support is a flat plate, and the contact plane is located on the large surface of the flat plate.

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