Heat dissipation structure of IPM module

Abstract

The utility model relates to a heat radiation structure of an IPM module, which belongs to the technical field of motor parts and comprises a die-casting aluminum end cover, heat radiation ribs are arranged on one side of the die-casting aluminum end cover, the other side of the die-casting aluminum end cover is used for installing the IPM module, and a section radiator is arranged on one side of the die-casting aluminum end cover provided with the heat radiation ribs. The die-casting aluminum end cover is provided with a positioning cavity for embedding the profile radiator, the profile radiator is fixed with the die-casting aluminum end cover through a fixing bolt, and the profile radiator is made of aluminum alloy as a raw material and is manufactured through an aluminum extrusion technology, so that the heat dissipation area of the IPM module and the heat conduction efficiency of the die-casting aluminum end cover are effectively increased; the heat of the IPM module can be conducted out more quickly, the temperature rise is better controlled, the temperature rise problem of the IPM module is solved, and the reliability of the IPM module is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of motor parts, and especially relates to a heat dissipation structure of IPM module. BACKGROUND

[0002] IPM (Intelligent Power Module) is a kind of intelligent power module integrated with IGBT (Insulated Gate Bipolar Transistor), drive circuit and protection circuit. It has built-in drive and protection circuit, so that system hardware circuit is more simple and reliable, shortens system development cycle, and improves self-protection ability under fault.

[0003] The IPM module in the motor is usually directly installed on the die-cast aluminum end cover and directly dissipates heat through the heat dissipation ribs arranged on the die-cast aluminum end cover, but the heat dissipation efficiency of the IPM module is limited by the size, spacing and thermal conductivity coefficient of the die-cast aluminum, for example, the thermal conductivity coefficient of die-cast aluminum alloy ADC12 is 96 W / M·K, and the heat dissipation capacity is limited, which may cause the project to be unable to proceed or other higher cost solutions to be selected when applied to the project with limited temperature rise requirements. UTILITY MODEL CONTENT

[0004] In order to solve the problem of temperature rise of IPM module, the application provides a heat dissipation structure of IPM module.

[0005] The application provides a heat dissipation structure of IPM module, which adopts the following technical scheme:

[0006] A heat dissipation structure of IPM module, comprising a die-cast aluminum end cover, one side of the die-cast aluminum end cover is provided with a heat dissipation rib, the other side of the die-cast aluminum end cover is used for mounting the IPM module, the side of the die-cast aluminum end cover provided with the heat dissipation rib is provided with a profile radiator, and the die-cast aluminum end cover is provided with a fixing piece for fixing the profile radiator.

[0007] By adopting the above technical scheme, the heat dissipation area of the IPM module and the heat conduction efficiency of the die-cast aluminum end cover are effectively increased by the setting of the profile radiator, so that the heat of the IPM module can be quickly conducted out, the temperature rise is better controlled, the problem of temperature rise of the IPM module is solved, and the reliability of the IPM module is improved.

[0008] Preferably, the raw material of the profile radiator is selected from aluminum alloy.

[0009] By adopting the above technical scheme, the profile radiator has the advantages of light weight, high thermal conductivity, good heat dissipation effect and strong oxidation resistance, and is suitable for projects that require rapid heat dissipation and have weight requirements.

[0010] Preferably, the die-cast aluminum end cover is provided with a positioning cavity for accommodating the profile radiator.

[0011] By adopting the above technical scheme, the profile radiator is not prone to moving relative to the die-cast aluminum end cover, and the reliability of the profile radiator mounted on the die-cast aluminum end cover is improved.

[0012] Preferably, the bottom of the profile radiator is provided with a positioning protrusion, and the die-cast aluminum end cover is provided with a positioning through hole for accommodating the positioning protrusion.

[0013] By adopting the above technical scheme, the profile radiator is not prone to moving relative to the die-cast aluminum end cover, and the reliability of the profile radiator mounted on the die-cast aluminum end cover is improved.

[0014] Preferably, the fixing member includes a plurality of fixing bolts, the die-cast aluminum end cover is provided with a fixing through hole for accommodating the fixing bolts, the fixing through hole is communicated with the positioning cavity, and the bottom of the profile radiator is provided with a fixing threaded hole for threadedly cooperating with the fixing bolts.

[0015] By adopting the above technical scheme, the profile radiator is fixed to the die-cast aluminum end cover through the fixing bolts, which not only ensures the reliability of the profile radiator fixed to the die-cast aluminum end cover, but also facilitates the maintenance and replacement of the profile radiator.

[0016] Preferably, the die-cast aluminum end cover is provided with a fixing counterbore for accommodating the head of the fixing bolt, and the fixing counterbore is communicated with the fixing through hole.

[0017] By adopting the above technical scheme, the fixing bolt is not prone to loosening, and the reliability of the profile radiator fixed to the die-cast aluminum end cover through the fixing bolt is ensured.

[0018] Preferably, the positioning protrusion and the IPM module are fixed through a mounting bolt, the positioning protrusion is provided with a mounting threaded hole for threadedly cooperating with the mounting bolt, and the IPM module includes a mounting through hole for accommodating the mounting bolt.

[0019] By adopting the above technical scheme, the reliability of the profile radiator and the IPM module fixed to the die-cast aluminum end cover is improved.

[0020] In summary, the present application has at least one of the following beneficial technical effects:

[0021] 1. The configuration of the profile heat sink effectively increases the heat dissipation area of ​​the IPM module and the heat conduction efficiency of the die-cast aluminum end cover, so that the heat of the IPM module can be discharged faster and the temperature rise is better controlled, thus solving the problem of temperature rise of the IPM module and improving the reliability of the IPM module.

[0022] 2. The raw material of the profile radiator is aluminum alloy, which makes the profile radiator have the advantages of light weight, high thermal conductivity, good heat dissipation effect and strong anti-oxidation ability. It is suitable for projects that require rapid heat dissipation and have weight requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0024] Figure 2 It is a schematic diagram of the IPM module separation structure in an embodiment of the present application.

[0025] Figure 3 It is a schematic diagram of the profile radiator structure in an embodiment of the present application.

[0026] Figure 4 It is a schematic diagram of the internal structure of the die-cast aluminum end cover in an embodiment of the present application.

[0027] Figure 5 It is a schematic diagram of the surface structure of the die-cast aluminum end cover in an embodiment of the present application.

[0028] Explanation of the accompanying drawings: 1. Die-cast aluminum end cover; 11. Heat dissipation rib; 12. Mounting column; 13. Positioning cavity; 14. Positioning through hole; 15. Fixing through hole; 16. Fixing countersunk hole; 2. Profile radiator; 21. Positioning protrusion; 211. Mounting through hole; 22. Fixing threaded hole; 3. Fixing bolt; 4. IPM module; 41. Mounting threaded hole. DETAILED DESCRIPTION

[0029] The following is combined with Figures 1-5 The utility model is described in further detail.

[0030] The present application embodiment discloses a heat dissipation structure of an IPM module, referring to Figure 1 and Figure 2 , including a die-cast aluminum end cover 1, one side of the die-cast aluminum end cover 1 is integrally formed with a heat dissipation rib 11, and the other side of the die-cast aluminum end cover 1 is used for installing the IPM module 4. The side of the die-cast aluminum end cover 1 away from the heat dissipation rib 11 is provided with three mounting columns 12 that cooperate with the IPM module 4. The three mounting columns 12 are arranged in a circular array with the axis of the die-cast aluminum end cover 1 as the center. The arrangement of the mounting columns 12 facilitates determining the installation position of the IPM module 4, making it difficult for the IPM module 4 to be displaced circumferentially relative to the die-cast aluminum end cover 1, thereby ensuring the reliability of the IPM module 4 installed on the die-cast aluminum end cover 1.

[0031] With reference to Figure 1 and Figure 3 , the die-cast aluminum end cover 1 is provided with a profile radiator 2 on one side of the heat dissipation ribs 11. When arranging the heat dissipation ribs 11, space for installing the profile radiator 2 needs to be reserved. The raw material of the profile radiator 2 is selected from aluminum alloy, so that it has the advantages of light weight, high thermal conductivity, good heat dissipation effect and strong oxidation resistance, and is suitable for projects that require rapid heat dissipation and have weight requirements. In the embodiment of the present application, the profile radiator 2 is made of 6063 aluminum alloy as the raw material, and then made by aluminum extrusion technology. The thermal conductivity of 6063 aluminum alloy is 201 W / M·K, which effectively increases the heat dissipation area of the IPM module 4 and the heat dissipation efficiency of the die-cast aluminum end cover 1, so that the heat of the IPM module 4 can be conducted out faster, and the temperature rise is better controlled, solving the problem of temperature rise of the IPM module 4, thereby improving the reliability of the IPM module 4. In the actual application process, it is found that the temperature rise can be reduced by about 10 to 20 degrees.

[0032] With reference to Figure 4 and Figure 5 , the die-cast aluminum end cover 1 is provided with a positioning cavity 13 for embedding the profile radiator 2. Through the arrangement of the positioning cavity 13, the profile radiator 2 is not easy to move relative to the die-cast aluminum end cover 1, thereby improving the reliability of the profile radiator 2 installed on the die-cast aluminum end cover 1. The bottom of the profile radiator 2 is provided with a positioning protrusion 21, and the die-cast aluminum end cover 1 is provided with a positioning through hole 14 for penetrating the positioning protrusion 21. The positioning through hole 14 is in communication with the positioning cavity 13. Through the cooperation of the positioning protrusion 21 and the positioning through hole 14, the reliability of the profile radiator 2 installed on the die-cast aluminum end cover 1 is further improved. The positioning through hole 14 cooperates with the positioning cavity 13, the size of the positioning through hole 14 is smaller than that of the positioning cavity 13, the bottom of the profile radiator 2 is attached to the bottom wall of the positioning cavity 13, so that the external material is not easy to enter between the die-cast aluminum end cover 1 and the IPM module 4.

[0033] With reference to Figure 2 , Figure 3 and Figure 4 , the die-cast aluminum end cover 1 is provided with a fixing member for fixing the profile radiator 2. The fixing member includes a plurality of fixing bolts 3. In the embodiment of the present application, there are two fixing bolts 3, which are symmetrically arranged on both sides of the positioning through hole 14. The die-cast aluminum end cover 1 is provided with a fixing through hole 15 for penetrating the fixing bolt 3. The fixing through hole 15 is in communication with the positioning cavity 13. The bottom of the profile radiator 2 is provided with a fixing thread hole 22 for screwing with the fixing bolt 3. The profile radiator 2 is fixed with the die-cast aluminum end cover 1 through the fixing bolt 3, which not only ensures the reliability of the profile radiator 2 fixed on the die-cast aluminum end cover 1, but also facilitates the maintenance and replacement of the profile radiator 2.

[0034] Reference Figure 4 The die-cast aluminum end cover 1 is provided with a fixing countersunk hole 16 for accommodating the screw head of the fixing bolt 3. The fixing countersunk hole 16 is connected to the fixing through-hole 15. The setting of the fixing countersunk hole 16 makes the fixing bolt 3 not easy to loosen, thereby ensuring the reliability of fixing the profile radiator 2 to the die-cast aluminum end cover 1 through the fixing bolt 3.

[0035] Reference Figure 2 and Figure 3 The positioning protrusion 21 is fixed to the IPM module 4 by means of mounting bolts. The positioning protrusion 21 is provided with a mounting threaded hole 41 which cooperates with the mounting bolt thread. The IPM module 4 includes a mounting through hole 211 for the mounting bolt to pass through, thereby improving the reliability of fixing the profile radiator 2 and the IPM module 4 on the die-cast aluminum end cover 1.

[0036] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A heat dissipation structure of an IPM module, characterized in that: The invention comprises a die-cast aluminum end cover (1), one side of the die-cast aluminum end cover (1) is provided with a heat dissipation rib (11), the other side of the die-cast aluminum end cover (1) is used for installing an IPM module (4), the side of the die-cast aluminum end cover (1) provided with the heat dissipation rib (11) is provided with a profile radiator (2), and the die-cast aluminum end cover (1) is provided with a fixing piece for fixing the profile radiator (2).

2. The heat dissipation structure of the IPM module according to claim 1, characterized in that: The raw material of the profile radiator (2) is aluminum alloy.

3. The heat dissipation structure of the IPM module according to claim 1 or 2, characterized in that: The die-cast aluminum end cover (1) is provided with a positioning cavity (13) for engaging the profile radiator (2).

4. The heat dissipation structure of the IPM module according to claim 3, characterized in that: A positioning protrusion (21) is provided at the bottom of the profile radiator (2), and a positioning through hole (14) for the positioning protrusion (21) to pass through is provided through the die-cast aluminum end cover (1), and the positioning through hole (14) is communicated with the positioning cavity (13).

5. The heat dissipation structure of the IPM module according to claim 4, characterized in that: The fixing member includes a plurality of fixing bolts (3); a fixing through hole (15) for the fixing bolts (3) to pass through is provided on the die-cast aluminum end cover (1); the fixing through hole (15) is communicated with the positioning cavity (13); and a fixing threaded hole (22) threadedly matched with the fixing bolts (3) is provided at the bottom of the profile radiator (2).

6. The heat dissipation structure of the IPM module according to claim 5, characterized in that: The die-cast aluminum end cover (1) is provided with a fixing countersunk hole (16) for accommodating the screw head of the fixing bolt (3), and the fixing countersunk hole (16) is communicated with the fixing through hole (15).

7. The heat dissipation structure of the IPM module according to claim 4, characterized in that: The positioning protrusion (21) and the IPM module (4) are fixed by means of mounting bolts. The positioning protrusion (21) is provided with a mounting threaded hole (41) that is threadedly matched with the mounting bolt. The IPM module (4) includes a mounting through hole (211) for the mounting bolt to pass through.

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