Magnetic steel heat conduction structure of new energy driving motor

Abstract

The utility model discloses a new energy driving motor magnetic steel heat conduction structure, which relates to the technical field of new energy and comprises a rotor core, annular mounting grooves are arranged at two ends of the circumferential outer wall of the rotor core, and magnetic pole mounting rings are attached to one sides of the inner walls of the annular mounting grooves. The other sides of the inner walls of the annular mounting grooves are provided with reinforcing assemblies used for reinforcing the magnetic pole mounting rings, magnetic pole mounting grooves far away from the rotor core are formed in the two magnetic pole mounting rings at equal intervals, and magnetic pole bodies are inserted into the inner walls of the two horizontal magnetic pole mounting grooves. According to the utility model, the space is arranged between the magnetic pole body and the rotor core, so that the magnetic pole body and the rotor core are in a non-contact state, the problem of poor heat conduction performance of the contact surface of the magnetic pole body and the rotor core is avoided, the problem of overheating of the magnetic steel is prevented, and the performance of heat conduction of four surfaces of the magnetic steel of the motor is formed.

Description

Technical Field

[0001] This utility model relates to the field of new energy technology, and in particular to a heat-conducting structure for a new energy drive motor magnet. Background Technology

[0002] Permanent magnet motors are high-efficiency and energy-saving motors that do not require excitation current and are widely used in new energy drive motors and other fields. During continuous operation, the magnets are prone to overheating, and as the temperature rises, the internal resistance of the motor also increases. At this point, the efficiency and output of the motor will drop sharply. Therefore, heat dissipation treatment is required for the motor magnets.

[0003] A search revealed that utility model patent CN211429138U discloses a heat dissipation structure for the rotor magnets of a permanent magnet synchronous generator. The rotor has ventilation slots between each pair of magnetic poles, and aluminum heat sinks are placed within these slots. The heat sinks extend along the length of the ventilation slots, spanning the entire slot, and are in close contact with the magnetic poles on both sides. Thermal grease is applied between the heat sinks and the magnetic poles. The heat sinks are bolted to the rotor's support. This utility model improves the temperature of the magnets and enhances the operational reliability of the permanent magnet synchronous generator.

[0004] Based on the aforementioned patents, the existing technology has the following shortcomings: The existing technology adds aluminum heat sinks between adjacent magnetic poles for heat conduction and heat dissipation. However, the magnetic poles are in direct contact with the rotor, and the heat conduction performance of the side of the magnetic pole in contact with the rotor is poor, so the problem of overheating of the magnets still exists. Therefore, it is urgent to design a new energy drive motor magnet heat conduction structure to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a heat-conducting structure for the magnets of a new energy drive motor. Its advantage lies in ensuring that the magnetic pole body and the rotor core are in a non-contact state, avoiding the problem of poor heat conduction on the contact side of the magnetic pole body and rotor core, and preventing overheating of the magnets.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A new energy drive motor magnetic steel heat conduction structure includes a rotor core. Both ends of the outer circumference of the rotor core are provided with annular mounting grooves, and a magnetic pole mounting ring is attached to one side of the inner wall of each annular mounting groove. A reinforcing component for reinforcing the magnetic pole mounting ring is provided on the other side of the inner wall of each annular mounting groove. Magnetic pole mounting grooves away from the rotor core are provided at equal intervals on both magnetic pole mounting rings, and magnetic pole bodies are inserted into the inner walls of the two horizontal magnetic pole mounting grooves. A frame-type aluminum heat sink is provided in the ventilation gap between two adjacent magnetic pole bodies.

[0008] The above technical solutions ensure that the magnetic pole body and the rotor core are in a non-contact state, avoiding the problem of poor heat conduction performance on the side of the magnetic pole body that is in contact with the rotor core, and preventing the problem of overheating of the magnet.

[0009] The present invention is further configured such that the reinforcing component includes a reinforcing ring that is attached to the outer wall of one side of the magnetic pole mounting ring and the inner wall of the annular mounting groove on the other side, and both ends of the rotor core are provided with equally spaced positioning grooves. The inner wall of the reinforcing ring is fixed with mounting ears that are equally spaced and attached to the positioning grooves. The mounting ears and the positioning grooves are fixedly connected by screws.

[0010] The present invention is further configured such that each of the two magnetic pole mounting rings has a slot that is equidistant from the rotor core, and each of the two reinforcing rings has a pin that is equidistant from the slot on one side.

[0011] The above technical solutions ensure that the magnetic pole mounting ring is in a stable state.

[0012] The present invention is further configured such that each of the two magnetic pole mounting rings has equidistantly distributed ventilation openings, and the positions of the ventilation openings intersect with the positions of the magnetic pole mounting grooves.

[0013] The present invention is further configured such that the position of the ventilation opening is connected to the ventilation gap between two adjacent magnetic pole bodies, and the inner wall size of the ventilation opening is the same as the inner wall size of the frame-type aluminum heat sink. The two ends of the frame-type aluminum heat sink are respectively attached to the opposite surfaces of the two magnetic pole mounting rings, and one side of the outer wall of the frame-type aluminum heat sink is attached to the surface of the rotor core.

[0014] The above technical solutions ensure that the orientation of the frame-type aluminum heat sink is consistent with the ventilation direction of the entire motor, thereby better dissipating the heat from the magnets.

[0015] The present invention is further configured such that the opposing surfaces of the two magnetic pole mounting rings are each fixed with reinforcing blocks distributed at equal intervals, and the reinforcing blocks are all attached to the outer wall of the other side of the frame-type aluminum heat sink.

[0016] The above technical solutions enable the reinforcing block to adhere to the side wall of the frame-type aluminum heat sink, making it more stable.

[0017] The present invention is further configured such that thermally conductive silicone is coated between the frame-type aluminum heat sink and the two adjacent magnetic pole bodies, and multiple rows of equally spaced heat dissipation holes are opened on both sides of the frame-type aluminum heat sink that are close to the two adjacent magnetic pole bodies and on the other side of the frame-type aluminum heat sink that is far away from the rotor core.

[0018] The above technical solution can better conduct the heat on the magnetic pole body to the frame-type aluminum heat sink in the ventilation gap, and then dissipate it through the heat dissipation holes.

[0019] The present invention is further configured such that the inner walls of the magnetic pole mounting groove on both sides along the ventilation direction are respectively provided with a first heat dissipation groove and a second heat dissipation groove that are equally distributed.

[0020] The above technical solutions can carry away the heat from both sides of the magnetic pole body under the ventilation of the motor, fully improving the heat conduction effect of the entire motor magnet and forming the performance of the motor magnet being heat-conducting on all four sides.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1. In this utility model, a space is provided between the magnetic pole body and the rotor core, so that the magnetic pole body and the rotor core are in a non-contact state, which avoids the problem of poor heat conduction performance on the side of the magnetic pole body that is in contact with the rotor core and prevents the problem of overheating of the magnet.

[0023] 2. In this utility model, a frame-type aluminum heat sink and thermally conductive silicone are provided in the ventilation gap between two adjacent magnetic pole bodies. This can better conduct the heat on the magnetic pole body to the frame-type aluminum heat sink in the ventilation gap and discharge it through the heat dissipation holes. It also makes the orientation of the frame-type aluminum heat sink consistent with the ventilation direction of the entire motor, thereby better conducting the heat on the magnet.

[0024] 3. In this utility model, a first heat dissipation groove and a second heat dissipation groove are provided on the inner walls of both sides of the magnetic pole mounting groove, which are aligned with the ventilation direction of the motor. Under the ventilation of the motor, the heat on both sides of the magnetic pole body can be carried away, which can fully improve the heat conduction effect of the entire motor magnet and form the performance of the motor magnet being heat-conducting on all four sides. Attached Figure Description

[0025] Figure 1 This is a perspective view of a heat-conducting structure for a new energy drive motor magnet proposed in this utility model;

[0026] Figure 2 This is a front sectional view of a new energy drive motor magnet heat conduction structure proposed in this utility model;

[0027] Figure 3 This is a schematic diagram showing the rotor core and reinforcing ring of a new energy drive motor magnetic steel heat-conducting structure proposed in this utility model.

[0028] Figure 4 This is a schematic diagram of the slot structure of the magnet heat conduction structure of a new energy drive motor proposed in this utility model;

[0029] Figure 5This is a schematic diagram of the heat dissipation holes and magnetic pole mounting groove structure of the magnet heat conduction structure of a new energy drive motor proposed in this utility model.

[0030] Figure 6 This is a schematic diagram of the first and second heat dissipation grooves of the heat-conducting structure of the magnet steel of a new energy drive motor proposed in this utility model.

[0031] In the diagram: 1. Rotor core; 2. Reinforcing ring; 3. Magnetic pole mounting ring; 4. Magnetic pole body; 5. Frame-type aluminum heat sink; 6. Reinforcing block; 7. Annular mounting groove; 8. Mounting ear; 9. Positioning groove; 10. Locking post; 11. Locking slot; 12. Heat dissipation hole; 13. Magnetic pole mounting groove; 14. Ventilation opening; 15. First heat dissipation groove; 16. Second heat dissipation groove. Detailed Implementation

[0032] The technical solution of this utility model will be further described in detail below with reference to specific embodiments.

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] Reference Figure 1-6A new energy drive motor magnet heat conduction structure includes a rotor core 1. Both ends of the outer circumference of the rotor core 1 are provided with annular mounting grooves 7. A magnetic pole mounting ring 3 is attached to one side of the inner wall of each annular mounting groove 7. A reinforcing component for reinforcing the magnetic pole mounting ring 3 is provided on the other side of the inner wall of each annular mounting groove 7. Magnetic pole mounting grooves 13, equidistant from the rotor core 1, are equally spaced on both magnetic pole mounting rings 3. Magnetic pole bodies 4 are inserted into the inner walls of the two horizontally aligned magnetic pole mounting grooves 13, ensuring that the magnetic pole bodies 4 are in a non-contact state with the rotor core 1. This avoids the problem of poor heat conduction performance on the side of the magnetic pole bodies 4 in contact with the rotor core 1, preventing overheating of the magnets. A frame-type aluminum heat sink 5 is provided in the ventilation gap between two adjacent magnetic pole bodies 4. The magnetic pole mounting ring 3 has equidistantly distributed ventilation openings 14, and the positions of the ventilation openings 14 and the magnetic pole mounting grooves 13 are staggered. The positions of the ventilation openings 14 are connected to the ventilation gaps between two adjacent magnetic pole bodies 4, and the inner wall size of the ventilation opening 14 is the same as the inner wall size of the frame-type aluminum heat sink 5. The two ends of the frame-type aluminum heat sink 5 are respectively attached to the opposite surfaces of the two magnetic pole mounting rings 3, and one outer wall of the frame-type aluminum heat sink 5 is attached to the surface of the rotor core 1. The inner walls of the magnetic pole mounting grooves 13 along the ventilation direction are respectively provided with equidistantly distributed first heat dissipation grooves 15 and second heat dissipation grooves 16. Under the action of motor ventilation, the heat on both sides of the magnetic pole body 4 can be carried away, which can fully improve the heat conduction effect of the entire motor magnet and form the performance of the motor magnet being heat-conducting on all four sides.

[0037] To ensure the stability of the magnetic pole mounting ring 3, refer to Figure 1 , Figure 3 , Figure 4 and Figure 5 The reinforcing assembly includes a reinforcing ring 2 that fits against the outer wall of one side of the magnetic pole mounting ring 3 and the inner wall of the annular mounting groove 7 on the other side. Both ends of the rotor core 1 are provided with equidistant positioning grooves 9. The inner wall of the reinforcing ring 2 is fixed with mounting ears 8 that fit into the positioning grooves 9 at equal distances. The mounting ears 8 and the positioning grooves 9 are fixedly connected by screws. Both magnetic pole mounting rings 3 are provided with slots 11 that are equidistant from the rotor core 1. Both reinforcing rings 2 are fixed with locking posts 10 that are equidistant from the slots 11 on one side. This allows the reinforcing ring 2 to be installed in the annular mounting groove 7, so that the locking posts 10 are locked in the slots 11, ensuring that the magnetic pole mounting ring 3 is in a stable state.

[0038] To ensure the stability of the frame-type aluminum heat sink 5, refer to Figure 1 , Figure 2 , Figure 4 and Figure 5Two magnetic pole mounting rings 3 are fixed with equally spaced reinforcing blocks 6 on their opposite sides, and the reinforcing blocks 6 are attached to the outer wall of the other side of the frame aluminum heat sink 5. This allows the reinforcing blocks 6 to be attached to the side wall of the frame aluminum heat sink 5 during installation, making it more stable.

[0039] In order to conduct the heat away from the frame-type aluminum heat sink 5, refer to Figure 1 , Figure 4 and Figure 5 Thermally conductive silicone is applied between the frame-type aluminum heat sink 5 and the two adjacent magnetic pole bodies 4. Multiple rows of equally spaced heat dissipation holes 12 are opened on both sides of the frame-type aluminum heat sink 5 and the two adjacent magnetic pole bodies 4, as well as on the other side of the frame-type aluminum heat sink 5 away from the rotor core 1. The heat dissipation holes 12 can dissipate the heat from the frame-type aluminum heat sink 5 to the magnet.

[0040] Working principle: During use, the magnetic pole body 4 and the rotor core 1 are set to a non-contact state, and a frame-type aluminum heat sink 5 and thermally conductive silicone are installed in the ventilation gap between two adjacent magnetic pole bodies 4. When the motor is working, the motor fan blades also work, which can create ventilation inside the motor. At this time, the heat on the magnetic pole body 4 can be conducted to the frame-type aluminum heat sink 5 in the ventilation gap and discharged through the heat dissipation hole 12. This also makes the orientation of the frame-type aluminum heat sink 5 consistent with the ventilation direction of the entire motor, so that the heat of the frame-type aluminum heat sink 5 can be conducted away. In addition, the inner walls on both sides of the magnetic pole mounting groove 13 are also provided with a first heat dissipation groove 15 and a second heat dissipation groove 16 consistent with the ventilation direction of the motor. At this time, the heat on both sides of the magnetic pole body 4 can be carried away under the ventilation of the motor, forming a way in which the magnets of the motor are heat-conducted on all four sides.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A new energy driven motor magnetic steel heat conduction structure, comprising a rotor core (1), characterized in that, The circumferential outer wall of the rotor core (1) is provided with an annular mounting groove (7) at both ends, and the inner wall of the annular mounting groove (7) is attached with a magnetic pole mounting ring (3) on one side, and the other side of the inner wall of the annular mounting groove (7) is provided with a reinforcing assembly for reinforcing the magnetic pole mounting ring (3), and the two magnetic pole mounting rings (3) are provided with magnetic pole mounting grooves (13) away from the rotor core (1) at equal distances, and the inner walls of the two horizontal magnetic pole mounting grooves (13) are inserted with magnetic pole bodies (4), and the frame type aluminum heat sink (5) is arranged at the ventilation gap between the two adjacent magnetic pole bodies (4).

2. The heat conduction structure of the magnetic steel of the new energy driving motor according to claim 1, characterized in that, The reinforcing assembly comprises a reinforcing ring (2) attached to one side of the outer wall of the magnetic pole mounting ring (3) and the other side of the inner wall of the annular mounting groove (7), and the two ends of the rotor core (1) are provided with equally distributed positioning grooves (9), and the inner wall of the reinforcing ring (2) is fixed with mounting ears (8) equally attached to the positioning grooves (9), and the mounting ears (8) and the positioning grooves (9) are fixedly connected by screws.

3. The heat conduction structure of the magnetic steel of the new energy driving motor according to claim 2, characterized in that, The two magnetic pole mounting rings (3) are provided with equally spaced clamping grooves (11) close to the rotor core (1), and the two reinforcing rings (2) are fixed with clamping columns (10) equally clamped in the clamping grooves (11) on one side.

4. The heat conduction structure of the magnetic steel of the new energy driving motor according to claim 3, characterized in that, The two magnetic pole mounting rings (3) are provided with equally distributed ventilation openings (14), and the positions of the ventilation openings (14) are staggered with the positions of the magnetic pole mounting grooves (13).

5. The heat conduction structure of the magnetic steel of the new energy driving motor according to claim 4, characterized in that, The position of the ventilation opening (14) is communicated with the ventilation gap between the two adjacent magnetic pole bodies (4), and the inner wall size of the ventilation opening (14) is the same as the inner wall size of the frame type aluminum heat sink (5), the two ends of the frame type aluminum heat sink (5) are respectively attached to the opposite surfaces of the two magnetic pole mounting rings (3), and one side of the outer wall of the frame type aluminum heat sink (5) is attached to the surface of the rotor core (1).

6. The heat conduction structure of the magnetic steel of the new energy driving motor according to claim 5, characterized in that, The opposite surfaces of the two magnetic pole mounting rings (3) are fixed with equally distributed reinforcing blocks (6), and the reinforcing blocks (6) are attached to the other side of the outer wall of the frame type aluminum heat sink (5).

7. The heat conduction structure of the magnetic steel of the new energy driving motor according to claim 1, characterized in that, The frame type aluminum heat sink (5) and the adjacent two magnetic pole bodies (4) are coated with heat-conducting silica gel, and the two sides of the frame type aluminum heat sink (5) close to the adjacent two magnetic pole bodies (4) and the other side of the frame type aluminum heat sink (5) away from the rotor core (1) are provided with multiple rows of equally distributed heat dissipation holes (12).

8. The heat conduction structure of the magnetic steel of the new energy driving motor according to claim 1, characterized in that, The first and second heat dissipation grooves (15) and (16) are equally distributed on the inner walls of the two sides of the magnetic pole mounting groove (13) in the ventilation direction.

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