A low temperature rise motor structure

Abstract

The present invention relates to a low temperature rise motor structure, comprising a stator core, a heat conductive skeleton and an end cover, the motor structure further comprising a heat conductive cover, the stator core, the heat conductive skeleton, the heat conductive cover and the end cover are assembled in sequence, the heat conductive cover contacts the coil in the motor, and conducts the heat generated by the coil to the end cover and the stator core for dissipation. Compared with the prior art, the present invention has the advantages of heat conduction, buffering and vibration reduction, sealing and insulation.

Description

Technical Field

[0001] The invention relates to the field of motor structures, and in particular to a low-temperature rise motor structure. Background Art

[0002] The temperature rise of the motor is mainly caused by the copper loss of the internal coil. Since a large part of the heat of the coil needs to be conducted to the motor body through the nylon frame and air, the thermal conductivity of the nylon frame and air is too low, resulting in a high temperature rise of the motor. If it is used in a vacuum environment, the thermal conductivity condition is even worse. Therefore, a large part of the current motor design is limited by the motor temperature rise, which greatly affects the performance of the motor in other aspects.

[0003] After searching, the Chinese patent publication number CN107769471A discloses a motor stator core structure, including a stator core, the inner ring of the stator core is provided with stator slots, the outer ring of the stator core has a cut surface, and the motor stator core structure also includes a splicing block spliced ​​with the cut surface, the side of the splicing block close to the cut surface is completely in contact with the cut surface, and the splicing block is made of a material with a thermal conductivity greater than the thermal conductivity of iron. This invention solves the problem of complex heat dissipation structure and insufficient heat dissipation of the motor stator in the prior art. However, this invention dissipates heat by adding a heat-conducting block to the outer ring of the stator core, which is not as efficient as the heat-conducting cover of the present invention directly contacting the coil for heat conduction. Summary of the invention

[0004] The purpose of the present invention is to provide a low temperature rise motor structure in order to overcome the defects of the prior art.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A low temperature rise motor structure comprises a stator core, a heat conductive skeleton and an end cover. The motor structure also comprises a heat conductive cover. The stator core, the heat conductive skeleton, the heat conductive cover and the end cover are assembled in sequence. The heat conductive cover contacts the coil in the motor and conducts the heat generated by the coil to the end cover and the stator core for dissipation.

[0007] Preferably, the thermally conductive cover comprises a clamping edge and a thermally conductive column, the clamping edge is arranged at the four corner edges of the thermally conductive cover, and the thermally conductive column is arranged inside the side of the thermally conductive cover connected to the stator core; after the motor is assembled, the two sides of the clamping edge are respectively close to the end cover and the stator core, and the thermally conductive column is in full contact with the coil.

[0008] Preferably, the heat-conducting columns include heat-conducting columns between coils and heat-conducting columns at the top of the coils.

[0009] Preferably, the heat-conducting columns between the coils and the heat-conducting columns at the top of the coils are evenly distributed.

[0010] Preferably, after the motor is assembled, the heat-conducting column between the coils is located between the two coils and is in full contact with the two coils, and the heat-conducting column at the top of the coil is located at the top of each coil and is in full contact with the coil.

[0011] Preferably, the heat conductive cover is made of a good heat conductive material.

[0012] Preferably, the heat-conducting cover is a heat-conducting cover with the functions of heat conduction, buffering and vibration reduction, sealing and insulation.

[0013] Preferably, the four functions of the heat-conducting cover can highlight one of the functions by adjusting the structure and material.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. The present invention can generate heat from the motor coil through a heat-conducting skeleton and a specially designed heat-conducting cover, and conduct the heat to the end cover and the iron core through good heat-conducting materials for dissipation.

[0016] 2. The present invention can take into account the four functions of heat conduction, buffering and vibration reduction, sealing and insulation through a specially designed heat-conducting cover structure, and can further adjust the design and materials to highlight one of the functions.

[0017] 3. The present invention can greatly reduce the temperature rise of existing motors under the same conditions, especially the temperature rise of motors in special environments such as vacuum. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the motor structure assembly of the present invention;

[0019] Figure 2 It is a schematic diagram of the heat-conducting cover structure of the present invention.

[0020] 1 is the stator core, 2 is the heat-conducting frame, 3 is the heat-conducting cover, 4 is the end cover, 31 is the clamping edge, 32 is the heat-conducting column between the coils, and 33 is the heat-conducting column at the top of the coil. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0022] like Figure 1 and Figure 2As shown, a low temperature rise motor structure includes a stator core 1, a heat conductive skeleton 2 and an end cover 4. The motor structure also includes a heat conductive cover 3. The heat conductive cover 3 is a heat conductive cover made of good heat conductive material. The stator core 1, the heat conductive skeleton 2, the heat conductive cover 3 and the end cover 4 are assembled in sequence. The heat conductive cover 3 contacts the coil in the motor and conducts the heat generated by the coil to the end cover 4 and the stator core 1 for dissipation.

[0023] The heat-conducting cover 3 includes a clamping edge 31 and a heat-conducting column. The clamping edge 31 is arranged at the four corner edges of the heat-conducting cover 3, and the heat-conducting column is arranged inside the side of the heat-conducting cover 3 connected to the stator core 1; after the motor is assembled, the two sides of the clamping edge 31 are respectively close to the end cover 4 and the stator core 1, and the heat-conducting column is fully in contact with the coil.

[0024] The thermally conductive columns include thermally conductive columns 32 between coils and thermally conductive columns 33 at the top of coils. The thermally conductive columns 32 between coils and thermally conductive columns 33 at the top of coils are evenly spaced. After the motor is assembled, the thermally conductive columns 32 between coils are located between the two coils and are in full contact with the two coils, and the thermally conductive columns 33 at the top of coils are located at the top of each coil and are in full contact with the coil.

[0025] The heat-conducting cover 3 can take into account the four functions of heat conduction, buffering and vibration reduction, sealing and insulation. The four functions of the heat-conducting cover 3 can be enhanced by adjusting the structure and materials. The heat-conducting cover is made of good heat-conducting materials. The heat-conducting material adopts a silicone rubber base material and ceramic particles such as boron nitride and aluminum oxide as fillers, and the heat-conducting effect is very good.

[0026] The heat-conducting cover clamping edge 31 of the present invention is located between the end cover 4 and the stator core 1 after the whole machine is assembled, and can play the role of heat conduction, buffering, vibration reduction and sealing; the heat-conducting columns 32 and 33 between the coils and at the top of the coils can fully contact the coils, greatly conducting the heat generated by the coils to the end cover 4 and the stator core 1 for dissipation, especially in a vacuum environment.

[0027] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A low temperature rise motor structure, comprising a stator core, a heat conductive skeleton and an end cover, characterized in that: The motor structure also includes a heat-conducting cover, wherein the stator core, heat-conducting skeleton, heat-conducting cover and end cover are assembled in sequence, wherein the heat-conducting cover contacts the coil in the motor, and conducts the heat generated by the coil to the end cover and the stator core for dissipation; the heat-conducting cover includes a card edge and a heat-conducting column, wherein the card edge is arranged at the four corner edges of the heat-conducting cover, and the heat-conducting column is arranged inside the side of the heat-conducting cover connected to the stator core; after the motor is assembled, the two sides of the card edge are respectively in close contact with the end cover and the stator core, and the heat-conducting column is in full contact with the coil; the heat-conducting column includes a heat-conducting column between the coils and a heat-conducting column at the top of the coil; the heat-conducting column between the coils and the heat-conducting column at the top of the coil are evenly spaced; after the motor is assembled, the heat-conducting column between the coils is located between the two coils and in full contact with the two coils, and the heat-conducting column at the top of the coil is located at the top of each coil and in full contact with the coil; In a vacuum environment, the heat-conducting cover is inserted between the end cover and the stator core after the whole machine is assembled, playing the role of heat conduction, buffering vibration reduction and sealing; the heat-conducting columns between the coils and on the top of the coils are in full contact with the coils, which greatly conducts the heat generated by the coils to the end cover and the stator core for dissipation; The heat-conducting cover has the functions of heat conduction, buffering and vibration reduction, sealing and insulation; The four functions of the heat conductive cover can be enhanced by adjusting the structure and material.

2. A low temperature rise motor structure according to claim 1, characterized in that: The heat-conducting cover is made of good heat-conducting material.

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