Stator and rotor assembly

Abstract

The utility model relates to the technical field of stator and rotor assemblies, in particular to a stator and rotor assembly, which comprises a stator and a rotor, a plurality of grooves for placing winding coils are uniformly distributed on the stator, a plurality of magnetic poles are uniformly distributed on the rotor, the groove-pole ratio of the stator to the rotor is 6: 1, the number of the grooves on the stator is 60, and the number of the magnetic poles on the rotor is 6: 1. When the motor is used, the slot-to-pole ratio of the stator to the rotor is set to be 6: 1, the sixty grooves are uniformly distributed on the stator, and the ten magnetic poles are uniformly distributed on the rotor, so that the phenomenon of torque fluctuation is improved, vibration and noise are reduced, the operation of the motor is smoother and more stable, the pause feeling is greatly reduced, the magnetic harmonic loss is reduced, and the efficiency of the motor is improved; and the acceleration response is fast, and the problem that in the using process of an existing traditional new energy automobile motor, due to the defects of a stator and rotor assembly, non-ideal working conditions such as low-speed jerking and torque step are likely to be caused, and the due smooth driving experience of the electric technology is seriously weakened is solved.

Description

Technical Field

[0001] This utility model relates to the field of stator and rotor assembly technology, and in particular to stator and rotor assembly. Background Technology

[0002] In new energy vehicles, the electric motor is the core power source, and its performance directly affects the vehicle's acceleration, energy efficiency, driving range, and driving experience. Traditional new energy vehicle motors, due to inherent defects in their stator and rotor assemblies, are prone to low-speed jerking, torque spikes, and other non-ideal operating conditions, severely undermining the smooth driving experience that electrification technology should provide. Summary of the Invention

[0003] The technical problem to be solved by this utility model is: In order to solve the problem that the traditional new energy vehicle motor is prone to low-speed jerking, torque step jump and other non-ideal working conditions due to the defects of the stator and rotor assembly itself, which seriously weakens the smooth driving experience that electrification technology should provide, a stator and rotor assembly is provided.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a stator-rotor assembly, including a stator and a rotor. The stator has a plurality of grooves evenly distributed on it for placing winding coils, and the rotor has a plurality of magnetic poles evenly distributed on it. The slot-to-pole ratio of the stator and rotor is six to one. The number of grooves on the stator is sixty, and the number of magnetic poles on the rotor is ten. Compared with the prior art, this solution improves the torque fluctuation phenomenon, reduces vibration and noise, makes the motor run more smoothly and steadily, greatly reduces the jerking sensation, reduces magnetic harmonic losses, improves motor efficiency, and accelerates response by setting the slot-to-pole ratio of the stator and rotor to six to one, having sixty grooves evenly distributed on the stator, and ten magnetic poles evenly distributed on the rotor.

[0005] In some preferred embodiments, the groove width is set tangentially along the cross-section of the stator in the radial direction and is W1, where W1 is 2.2mm-2.5mm, and the groove depth is set tangentially along the cross-section of the stator in the radial direction and is H1, where H1 is 10.5mm-11.5mm.

[0006] In some preferred embodiments, the hair clip is vertically inserted into the groove.

[0007] In some preferred embodiments, the width direction of the hair clip is consistent with the width direction of the groove, and the length direction of the hair clip is consistent with the depth direction of the groove.

[0008] In some preferred embodiments, the outer diameter of the stator is 140 mm and the inner diameter of the stator is 100 mm.

[0009] The beneficial effects of this utility model are as follows: When the stator and rotor assembly of this utility model is used, by setting the slot-to-pole ratio of the stator and rotor to sixty slots evenly distributed on the stator and ten magnetic poles evenly distributed on the rotor, the phenomenon of torque fluctuation is improved, vibration and noise are reduced, the motor runs more smoothly and steadily, the jerking sensation is greatly reduced, magnetic harmonic losses are reduced, the motor efficiency is improved, and the acceleration response is fast. This avoids the problem that existing traditional new energy vehicle motors are prone to low-speed jerking, torque step jumps and other non-ideal operating conditions due to the defects of the stator and rotor assembly itself, which seriously weakens the smooth driving experience that electrification technology should provide. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0012] Figure 2 This is the front view of this utility model;

[0013] Figure 3 This is a schematic diagram of the installation structure of the stator and the hairpin in this utility model;

[0014] Figure 4 yes Figure 3 A magnified view of part A in the image;

[0015] Figure 5 This is the front view of the rotor in this utility model.

[0016] In the diagram: 1. Stator; 101. Groove;

[0017] 2. Rotor, 201. Magnetic poles;

[0018] 3. Issuing the card;

[0019] W1 is the width of the groove provided tangentially on the cross-section of the stator radially;

[0020] H1 is the groove depth of the groove provided along the normal direction on the cross-section of the stator radially;

[0021] W2 is the width of the hair clip;

[0022] L2 is the length of the hair clip. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the embodiments:

[0024] This utility model is not limited to the following specific embodiments. Those skilled in the art can implement this utility model using various other specific embodiments based on the disclosed content. Any modifications or alterations to the design structure and concept of this utility model also fall within the protection scope of this utility model. It should be noted that, unless otherwise specified, the embodiments and features described in this utility model can be combined with each other.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] like Figure 1-5 As shown, a stator-rotor assembly includes a stator 1 and a rotor 2. The stator 1 is annular, and the rotor 2 is cylindrical. The rotor 2 is disposed in the inner ring of the stator 1. There is a gap between the stator 1 and the rotating shaft. The stator 1 has sixty grooves 101 evenly distributed on it for placing the winding coils. The rotor 2 has ten magnetic poles 201 evenly distributed on it, so that the slot-to-pole ratio of the stator 1 and the rotor 2 is six to one.

[0028] The groove width of groove 101 is W1, which is 2.2mm-2.5mm. The groove depth of groove 101 is set along the normal direction on the radial cross-section of stator 1 and is H1, which is 10.5mm-11.5mm, so that the groove fill factor is optimal, that is, the copper wire of hairpin 3 occupies part of groove 101.

[0029] The width of the hairpin 3 on the cross-section is W2, and the width direction of the hairpin 3 is consistent with the width direction of the groove 101. The length direction of the hairpin 3 on the cross-section is L2, and the length direction of the hairpin 3 is consistent with the groove depth direction of the groove 101. This allows the hairpin 3 to be vertically inserted into the groove 101. The groove width of the groove 101 is narrower in the circumferential direction of the stator 1, increasing the number of grooves 101 on the stator 1. This makes it easier to achieve a slot-to-pole ratio of six to one for the stator 1 and the rotor when vertically inserted. At the same time, under the same power condition, the motor output torque in this solution is greater, the amount of copper used is less, the cost of use is reduced, and the skin effect of the copper wire is reduced.

[0030] The outer diameter of stator 1 is 140mm and the inner diameter of stator 1 is 100mm. Therefore, the diameter of rotor 2 is less than 100mm.

[0031] The above description, based on the preferred embodiments of this utility model, provides inspiration. Those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification but must be determined according to the claims.

Claims

1. A stator-rotor assembly, comprising a stator (1) and a rotor (2), wherein the stator (1) has a plurality of grooves (101) evenly distributed thereon for placing winding coils, and the rotor (2) has a plurality of magnetic poles (201) evenly distributed thereon, characterized in that: The slot-to-pole ratio of the stator (1) and rotor (2) is six to one. The number of grooves (101) on the stator (1) is sixty, and the number of magnetic poles (201) on the rotor (2) is ten.

2. The stator and rotor assembly according to claim 1, characterized in that: The groove width of the groove (101) is set along its tangential direction on the radial cross-section of the stator (1) and is W1, where W1 is 2.2mm-2.5mm. The groove depth of the groove (101) is set along its normal direction on the radial cross-section of the stator (1) and is H1, where H1 is 10.5mm-11.5mm.

3. The stator and rotor assembly according to claim 1, characterized in that: The hair clip (3) is inserted vertically into the groove (101).

4. The stator and rotor assembly according to claim 3, characterized in that: The width direction of the hairpin (3) is consistent with the width direction of the groove (101), and the length direction of the hairpin (3) is consistent with the groove depth direction of the groove (101).

5. The stator and rotor assembly according to claim 1, characterized in that: The outer diameter of the stator (1) is 140 mm, and the inner diameter of the stator (1) is 100 mm.

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