CN111277057A - Stator structure and motor - Google Patents

Abstract

The invention discloses a stator structure and a motor, wherein the stator structure comprises: the stator comprises a stator yoke, stator teeth, coils wound on the stator teeth and a cooling assembly. Wherein, the stator yoke and the rotor are sleeved with each other; the stator teeth are inserted on the stator yoke and are arranged in a protruding manner towards one side of the rotor; the cooling assembly comprises a cooling body arranged outside and a temperature adjusting piece; the temperature adjusting piece is clamped between coils wound by adjacent stator teeth, or the temperature adjusting piece is clamped between the stator teeth and the coils wound by the adjacent stator teeth; the cooling body is connected with the temperature adjusting piece in a heat exchange manner. The cooling body is connected with the temperature adjusting piece in a heat exchange manner. Coil alternate segregation on the adjacent stator tooth for different coils can not receive the influence each other because spatial position is last to be close to each other, and the setting of piece that adjusts the temperature conducts the heat that the short circuit produced to cooling body one side, thereby guarantees in the use, and the heat rapid transfer that the short circuit produced is to the external world, thereby reduces the influence of temperature rise to the motor.

Description

A stator structure and motor

technical field

The invention relates to the technical field of motor heat dissipation, in particular to a stator structure and a motor.

Background technique

The permanent magnet motor has good mechanical characteristics and excellent torque characteristics. The fractional slot concentrated winding permanent magnet motor has the advantages of high efficiency, high torque density and compact end space. Ensure that the permanent magnet motor has small positioning torque and small torque fluctuation. It is widely used in direct drive occasions with compact space. In the above-mentioned applications, permanent magnet motor is an important power source, which requires high space size. Therefore, how to improve the torque density of fractional slot concentrated winding permanent magnet motor to become a motor Drive the focus of attention in the field.

Flat copper wire winding is a commonly used technical means to reduce copper loss and improve the heat transfer performance of the winding, which can effectively improve the torque density and efficiency of the motor. The flat copper wire winding technology commonly used in integer slot motors can be divided into two types: hairpin windings and wave windings. If the motor adopts hairpin windings, it is not necessary to use open slot stators, but on the side of the winding outlet, a lot of welding is required to achieve The wave winding can avoid a lot of welding at the outlet end, but it needs to use an open slot stator. Therefore, in actual use, the hairpin winding is not suitable for fractional-slot concentrated winding motors because the welding at the end of the hairpin winding will occupy the axial space.

According to the article D.Li,T.Zou,R.Qu and D.Jiang,"Analysis of Fractional-SlotConcentrated Winding PM Vernier Machines With Regular Open-Slot Stators,"in IEEE Transactions on Industry Applications,vol.54,no.2, pp.20-30, March-April2018., it shows that the torque capacity of fractional-slot concentrated winding motor is higher than that of open slot when semi-closed slot is adopted, and the influence of slot opening size on back EMF changes nonlinearly when semi-closed slot is used, and then Nonlinearity affects output torque.

Therefore, a wave winding and a semi-open stator arrangement are usually used in the prior art. For example, Chinese patent document CN109660035A discloses a motor, a segmented stator and a manufacturing method of a segmented stator. Wherein, the stator includes a plurality of stator teeth and a plurality of stator yokes. When using, first splicing all the stator yokes along the same circumference by welding to form the outer ring of the stator iron core; winding the coil around the stator teeth, and then inserting the stator teeth into the outer ring of the iron core formed by the stator yoke to form the outer ring of the stator core. complete stator.

However, in the manufacturing process of the above-mentioned segmented stator, since the stator yoke is welded by splicing, the outer circle of the stator is not complete, and the outer circle of the stator iron core is in the process of matching the casing, and the outer circle of the stator iron core and the casing are There are matching tolerances between them, and the existence of the tolerances can easily cause the cooling effect of the stator to deteriorate; in addition, different windings are wound on the adjacent stator teeth, but if one of the windings is short-circuited, the insulating layer around the winding will be. If it is damaged, a large amount of heat will be formed at the short circuit of the winding, which will affect the heat dissipation of the winding on the adjacent stator teeth and increase the temperature rise of the motor, thereby causing damage to the motor and shortening the life of the motor.

SUMMARY OF THE INVENTION

Therefore, the technical problem to be solved by the present invention is that during the use of the segmented stator in the prior art, the heat dissipation effect of the nails is deteriorated due to the fit tolerance of the stator yoke; at the same time, the heat dissipation effect is caused by the spatial influence of adjacent coils Poor, resulting in a large temperature rise of the motor, resulting in the defect that the service life and life of the motor are affected.

To this end, the present invention provides a stator structure, comprising:

The stator yoke is sleeved with the rotor;

A plurality of stator teeth are inserted on the stator yoke, and the stator teeth are arranged protruding toward one side of the rotor;

Several groups of coils are wound on the stator teeth;

It also includes a cooling assembly, the cooling assembly includes a cooling body arranged outside, and a temperature regulating member; the temperature regulating member is sandwiched between the adjacent coils wound by the stator teeth, or the temperature regulating member It is sandwiched between the stator teeth and the coils wound around the adjacent stator teeth; the cooling body is connected with the temperature regulating member by heat exchange.

Optionally, in the above-mentioned stator structure, the cooling assembly further includes a temperature guide,

The temperature guide member is arranged between the temperature regulation member and the coil, or the temperature guide member is arranged between the temperature regulation member and the stator teeth.

Optionally, in the above stator structure, one end of the stator teeth facing the rotor has tooth tips extending along the circumferential direction of the rotor;

The tooth tips of the adjacent stator teeth and the wall surface of the stator yoke facing the rotor side together form a semi-closed slot with the slot facing the rotor.

Optionally, in the above stator structure, the stator teeth include installation stator teeth and isolation stator teeth, and the installation stator teeth and the isolation stator teeth are alternately arranged on the side of the stator yoke close to the rotor. on the circumferential wall surface; coils are arranged around the outer circumference of the installed stator teeth; or

The stator teeth include installation stator teeth, and the outer circumference of the installation stator teeth is provided with coils.

Optionally, in the above stator structure, the stator yoke is provided with a mounting slot on the side where the stator teeth are mounted, and the tooth roots of the stator teeth are fixedly mounted in the mounting slot.

Optionally, in the above stator structure, an insulating and heat-conducting layer is provided between the mounting groove and the mounting stator teeth.

Optionally, in the above stator structure, the installed stator teeth are oriented silicon steel, and the orientation direction of the silicon steel is arranged in the same direction as the radial direction of the stator yoke.

A motor, comprising: a casing with an accommodating cavity; and disposed in the accommodating cavity:

The rotor, and the above-mentioned stator structure;

wherein the rotor is sleeved outside the stator structure; or

The rotor is sleeved in the stator structure.

Optionally, in the above-mentioned motor, a cooling channel is provided in the casing, and the cooling channel is communicated with the cooling and temperature regulating member through a cooling medium;

The cooling channel is the cooling body.

Optionally, in the above-mentioned motor, the cooling component is a heat pipe, the heat absorbing end of the heat pipe is a temperature regulating member, the cooling end of the heat pipe is the cooling body, and the cooling end is connected to the cooling body in the casing. Cooling runner fit.

The technical scheme provided by the present invention has the following advantages:

1. The stator structure provided by the present invention includes: a stator yoke, stator teeth, coils and cooling components. Wherein, the stator yoke and the rotor are sleeved with each other; the stator teeth are inserted on the stator yoke, and the stator teeth are arranged protruding toward one side of the rotor; the coils are wound on the stator teeth;

The cooling assembly includes a cooling body arranged outside, and a temperature regulating member; the temperature regulating member is sandwiched between the coils wound by the adjacent stator teeth, or the temperature regulating member is sandwiched between the stator teeth between the coils wound around adjacent stator teeth; the cooling body is connected with the temperature regulating member by heat exchange.

In the stator structure of this structure, the stator teeth are inserted into the complete stator yoke. Through the arrangement of the cooling assembly, on the one hand, the coils on the adjacent stator teeth are separated from each other, so that different coils will not be affected by each other due to their closeness in space. This ensures that the coils wound on different stator teeth are relatively independent, so that even if one coil is affected by a short circuit, the heat generated by the short circuit is conducted to the side of the cooling body through the setting of the thermostat, thus ensuring that during use, short circuit The generated heat is quickly transmitted to the outside world, ensuring a small temperature rise inside the stator structure, thereby ensuring a small impact on the motor. In addition, by inserting the stator teeth on the complete stator yoke, it is ensured that when used as an inner rotor motor, the heat dissipation effect between the stator yoke and the motor casing will not be deteriorated due to the fit tolerance, which further improves the motor's output torque capacity and ensures that the motor Stability of output efficiency.

2. In the stator structure provided by the present invention, the cooling assembly further includes a temperature guide member, and the temperature guide member is arranged on the temperature regulation member and the coil, or the temperature guide member is arranged between the temperature regulation member and the coil. between the stator teeth. The stator structure of this structure, through the setting of the temperature guide member, ensures that the temperature on the side of the faulty coil is conducted to the side of the temperature regulating member, which further strengthens the heat dissipation capacity of the stator structure, improves the torque output capacity of the motor, and ensures the stability of the output efficiency of the motor. sex.

3. In the stator structure provided by the present invention, one end of the stator teeth facing the rotor has tooth tips extending in the circumferential direction of the rotor; the tooth tips of the adjacent stator teeth and the stator yoke face the rotor The walls on one side together form a semi-closed slot with the slot facing the direction of the rotor. The stator structure of this structure further improves the output torque capacity of the motor through the formation of semi-closed slots.

4. In the stator structure provided by the present invention, the stator teeth include installation stator teeth and isolation stator teeth, and the installation stator teeth and the isolation stator teeth are alternately arranged on the side of the stator yoke close to the rotor. On the circumferential wall surface; coils are arranged around the outer circumference of the installation stator teeth; or the stator teeth include installation stator teeth, and coils are arranged around the outer circumference of the installation stator teeth. In the two winding methods of winding coils, fractional-slot double-layer concentrated winding and fractional-slot single-layer concentrated winding, both can achieve rapid heat dissipation to the stator structure through the temperature regulating element in the cooling assembly, thereby ensuring the output torque capacity of the motor. stability.

5. In the stator structure provided by the present invention, the stator yoke is provided with a mounting groove on the side where the stator teeth are mounted, and the tooth roots of the stator teeth are fixedly mounted in the mounting groove. An insulating and heat-conducting layer is provided between the mounting slot and the mounting stator teeth.

For the stator structure of this structure, in actual use, the coil can be wound on the installation stator teeth first, and then assembled by inserting the tooth roots of the installation stator teeth into the installation slot, or the installation stator teeth can be installed in the installation slot. Inside, the coil is wound and fixed, so that the above-mentioned setting of the installation slot improves the flexibility of winding the coil and further improves the slot full rate of the coil winding on the stator teeth.

The setting of the insulating and heat-conducting layer further ensures that the heat generated by the short circuit of the coil can be conducted to the side of the tooth root through the installed stator teeth, and to the side of the stator yoke through the insulating and heat-conducting layer, thereby realizing the transfer of heat to the side of the stator yoke. .

6. The motor provided by the present invention comprises: a casing, a rotor and a stator structure. The housing has an accommodating cavity; the accommodating cavity accommodates the rotor and the stator structure; wherein the rotor is sleeved outside the stator structure; or the rotor is sleeved inside the stator structure. The above stator structure is applicable to both inner rotor motor and outer rotor motor. By inserting the stator teeth on the complete stator yoke, it is ensured that if it is used as an inner rotor motor, the heat dissipation effect between the stator yoke and the motor casing will not be deteriorated due to the fit tolerance, which further improves the motor output torque capacity and ensures that the motor Stability of output efficiency. At the same time, in the outer rotor motor, the arrangement of the above-mentioned cooling components ensures good heat dissipation of the stator structure, and further improves the output efficiency of the motor.

7. In the motor provided by the present invention, a cooling channel is provided in the casing, and the cooling channel is communicated with the cooling and temperature-adjusting member through a cooling medium; the cooling channel is the cooling body. The cooling component is a heat pipe, the heat absorbing end of the heat pipe is a temperature regulating member, the cooling end of the heat pipe is the cooling body, and the cooling end is attached to the cooling channel of the casing.

Two cooling components with different structures are provided, one of which is communicated with the cooling pipe in the casing and achieves physical cooling through the circulation of the cooling medium, and the other achieves cooling through the heat-absorbing end and the cooling end of the heat pipe. All of the methods can realize the rapid heat dissipation of the temperature regulating element to the coil, and ensure the stability of the output torque capacity of the motor.

Description of drawings

In order to illustrate the specific embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the specific embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

1 is a schematic structural diagram of a motor provided in Embodiment 1;

FIG. 2 is a schematic diagram of the installation between stator teeth and coils in Embodiment 1;

3 is a schematic structural diagram of a motor provided in Embodiment 3;

Description of reference numbers:

11-stator yoke; 111-installation slot; 12-installation stator tooth; 121-tooth tip; 13-coil;

14-Temperature regulating part; 151-heat-absorbing end; 152-cooling end; 16-heat-conducting part;

21-rotor core; 22-shaft; 23-magnetic steel;

3-Case; 31 Cooling channel.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

This embodiment provides a motor, as shown in FIG. 1 and FIG. 2 , including: a casing 3 , a stator structure, and a rotor. The casing 3 has an accommodating cavity for accommodating the rotor and the stator structure; the rotor and the stator structure are sleeved with each other. Specifically, the inner rotor motor in this embodiment is taken as an example, and the stator structure is sleeved on the outer side of the rotor.

In this embodiment, as shown in FIG. 1 , the rotor includes: a rotor iron core 21 , a rotating shaft 22 and several magnetic steels 23 . The rotating shaft 22 is fixedly connected with the rotor iron core 21 , the stator structure is sleeved on the outer circumference of the rotor iron core 21 ; the magnetic steel 23 is limited and fixed on a side wall of the rotor iron core 21 facing the stator structure. The magnetic steel 23 and the rotor core 21 can be surface-mounted, surface-embedded or embedded. As long as it is ensured that the magnetic steel 23 and the rotor iron core 21 adhere to each other.

In this embodiment, as shown in FIG. 1 , the stator structure includes: a stator yoke 11 , a stator tooth 12 , a coil 13 and a cooling assembly are installed. The stator yoke 11 is sleeved on the outer side of the rotor; the stator teeth 12 are installed to protrude toward one side of the rotor; the stator teeth 12 are provided with winding coils 13 around the outer circumference. The adjacent installed stator teeth 12 are enclosed as stator slots.

As shown in FIG. 2 , in this embodiment, the coil 13 adopts a flat copper wire winding, and the flat copper wire winding further reduces the copper loss and improves the heat transfer performance of the winding, thereby effectively improving the torque density and efficiency of the motor.

As shown in FIG. 2 , the end of the stator teeth 12 facing the rotor has a tooth tip 121 extending in the circumferential direction of the rotor; the tooth tips 121 of the adjacent stator teeth and the wall surface of the stator yoke 11 facing the rotor side together form a notch toward the rotor. Semi-closed slot in rotor direction. Through the formation of semi-closed grooves, the output torque capability of the motor is further improved.

As shown in FIG. 1 , the cooling assembly includes a cooling body, a temperature regulating member 14 and a temperature conducting member 16 . The cooling body is arranged in the casing 3 ; the temperature regulating member 14 is arranged between adjacent stator teeth, and the two sides of the temperature regulating member 14 respectively abut the coils 13 where the adjacent stator teeth are located through the temperature guiding members 16 . Specifically, the cooling body is a cooling channel 31 disposed in the casing 3 , the temperature regulating member 14 is a pipe body that penetrates between adjacent coils in the axial direction of the stator, and the pipe body and the cooling channel 31 are connected in series Oh, of course, it can also be connected in parallel with the cooling flow channel 31, as long as the cooling medium is ensured to circulate and exchange heat in the pipe body and the cooling flow channel 31. The heat conducting member 16 is provided with an insulating material or may be a thermally conductive silicone pad. For example, the thermally conductive silicone gasket is sleeved on the outer periphery of the pipe body. The setting of the temperature guide member 16 ensures that the temperature on the side of the faulty coil 13 is conducted to the side of the temperature regulating member 14, which further strengthens the heat dissipation capability of the stator structure, improves the torque output capacity of the motor, and ensures the stability of the motor output efficiency.

In this embodiment, the mounting stator teeth 12 may be oriented silicon steel, which is inserted into the mounting slot 111 of the stator yoke 11 (mentioned below), and the orientation direction of the silicon steel is arranged in the same direction as the radial direction of the stator yoke 11 . Of course, the stator teeth 12 can also be installed with silicon steel sheets.

The coil in this embodiment adopts the winding method of single-layer fractional slot concentrated winding, the number of phases is m, the number of stator slots is n*(2*m), and the number of rotor poles is n*(2*m)±2, where n, m are positive integers. Each phase of the motor has n coils 13, a total of n*m, and each coil 13 is wound on one stator tooth 12 with the same tooth only. Specifically, in this embodiment, the number of motor phases m is 3, and n is 2, the number of slots n*(2*m) is 12, and the number of poles n*(2*m)-2 is 10.

As shown in FIG. 1 , the stator yoke 11 is provided with an installation groove 111 on the installation side where the stator teeth 12 are installed, and the tooth roots of the stator teeth 12 are fixedly installed in the installation groove 111 . The mounting grooves 111 penetrate through both end surfaces of the stator yoke 11 along the generatrix direction of the stator yoke 11 . For the stator structure of this structure, the coil 13 can be wound on the installation stator teeth 12 first, and then the tooth roots of the installation stator teeth 12 can be inserted into the installation slot 111 for assembly, or the installation stator teeth 12 can be installed in the installation slot. In 111, the winding coil 13 is wound and fixed, so that the above-mentioned setting of the installation slot 111 improves the flexibility of winding the winding coil 13, and further improves the installation of the stator teeth 12 and the isolation between the stator teeth. 13. The slot full rate of the winding. For example, the oriented silicon steel and the mounting groove 111 are connected to each other through a tenon-and-mortise structure.

An insulating and heat-conducting layer is provided between the mounting slot 111 and the mounting stator teeth 12 . The insulating and heat-conducting layer may be thermally conductive silicone grease or other heat-conducting insulating materials coated at the splicing of the stator teeth 12 and the stator yoke 11 , to further reduce the heat dissipation effect caused by the splicing of the stator teeth 12 and the stator yoke 11 . Through the arrangement of the insulating and heat-conducting layer, it is further ensured that the heat generated by the short circuit of the coil 13 can be conducted to the side of the tooth root by installing the stator teeth 12, and is conducted to the side of the stator yoke 11 through the insulating and heat-conducting layer, thereby realizing the heat transfer to the stator yoke 11. Transfer on one side.

In the stator structure provided in this embodiment, the stator teeth are inserted into the complete stator yoke 11, and the coils 13 on the adjacent stator teeth are separated from each other through the setting of the cooling assembly, so that the different coils 13 will not be affected by the spatial position. They are close to each other and are affected by each other, thereby ensuring that the coils 13 wound on different stator teeth are relatively independent, so that even if one coil 13 is affected by a short circuit, the heat generated by the short circuit is conducted to the side of the cooling body through the setting of the temperature regulating member 14. Therefore, it is ensured that the heat generated by the short circuit is quickly transmitted to the outside during the use process, and the internal temperature rise of the stator structure is ensured to be small, thereby ensuring that the impact on the motor is small. In addition, by inserting the stator teeth on the complete stator yoke 11, it is ensured that when the motor is used as an inner rotor, the heat dissipation effect between the stator yoke 11 and the casing 3 of the motor will not be deteriorated due to the fit tolerance, which further improves the torque output of the motor. , to ensure the stability of the motor output efficiency.

Example 2

This embodiment provides a motor, which is different from the motor provided in Embodiment 1 in that:

The winding coil 13 adopts a fractional slot single-layer concentrated winding coil 13; that is, the stator teeth include: mounting stator teeth 12 and isolating stator teeth. The mounting stator teeth 12 and the isolating stator teeth are alternately arranged on the circumferential wall surface of the stator yoke 11 close to the rotor side, and the mounting stator teeth 12 and the isolating stator teeth are sequentially spaced along the circumferential direction of the stator yoke 11; 12 and the isolation stator teeth are both protruding toward the rotor side; the outer circumference of the installed stator teeth 12 is provided with a winding coil 13 ; the outer circumference of the isolation stator teeth is not wound with a coil 13 . Adjacent stator teeth are enclosed into stator slots.

Example 3

This embodiment provides a motor, which is different from the motor provided in Embodiment 1 or 2 in that:

In the implementation of this embodiment, the cooling component can also be a heat pipe. As shown in FIG. 3 , the heat absorbing end 151 of the heat pipe is the temperature regulating member 14 , the cooling end 152 of the heat pipe is a cooling body, and the cooling end 152 is connected to the casing 3 . The cooling channel 31 is fitted.

Specifically, the heat pipe can be bent into an L-shape, and the heat pipe has a heat-absorbing end 151 and a cooling end 152, as long as the heat-absorbing end 151 of the heat pipe is in contact with the outer ring area of the coil 13, and the cooling end of the heat pipe 152 is closely attached to one side of the cooling channel 31 of the end cover through insulating and thermally conductive potting glue. Furthermore, it is possible to achieve the effect that the end of the approximate winding coil 13 is directly cooled by the water channel of the casing 3, which can significantly improve the heat dissipation of the motor winding coil 13, improve the power density and efficiency of the motor, and the process is simple, which facilitates the modification of the existing motor.

Example 4

This embodiment provides a motor, which is different from the motor provided by any one of Embodiments 1 to 3 in that:

The motor is an external rotor motor, that is, the rotor is arranged outside the stator structure. The stator yoke 11 is provided at the center of rotation, and the rotor core 21 is provided outside the stator yoke 11 .

Obviously, the above-mentioned embodiments are only examples for clear description, and are not intended to limit the implementation manner. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. And the obvious changes or changes derived from this are still within the protection scope of the present invention.

Claims (10)

1. A stator structure comprising: The stator yoke (11) is sleeved with the rotor; A plurality of stator teeth are inserted on the stator yoke (11), and the stator teeth are arranged to protrude toward one side of the rotor; Several groups of coils (13) are wound on the stator teeth; It is characterized in that it also includes a cooling assembly, the cooling assembly includes a cooling body arranged outside, and a temperature regulating member (14); the temperature regulating member (14) is sandwiched between adjacent stator teeth wound around the teeth. The coils, or the temperature regulating member (14) is sandwiched between the stator teeth and the coils wound by adjacent stator teeth; the cooling body is connected with the temperature regulating member (14) by heat exchange. 2. The stator structure according to claim 1, wherein the cooling assembly further comprises a temperature guide (16), The temperature conducting member (16) is arranged between the temperature regulating member (14) and the coil (13), or The temperature guiding member (16) is arranged between the temperature regulating member (14) and the stator teeth. 3. The stator structure according to claim 1, wherein one end of the stator teeth facing the rotor has a tooth tip (121) extending in the circumferential direction of the rotor; The tooth tips (121) of the adjacent stator teeth and the wall surface of the stator yoke (11) facing the rotor side together form a semi-closed slot with the slot facing the rotor direction. 4. The stator structure according to claim 1, characterized in that, The stator teeth include mounting stator teeth (12) and isolation stator teeth, and the mounting stator teeth (12) and the isolation stator teeth are alternately arranged on the side of the stator yoke (11) close to the rotor. On the circumferential wall surface; coils (13) are arranged around the outer periphery of the stator teeth (12) for installation; or The stator teeth are mounted stator teeth (12), and coils (13) are arranged around the outer circumference of the mounted stator teeth (12). 5. The stator structure according to claim 4, characterized in that, The stator yoke (11) is provided with an installation slot (111) on the installation side of the installation stator tooth (12), and the tooth root of the installation stator tooth (12) is fixedly installed in the installation slot (111). . 6. The stator structure according to claim 5, characterized in that, an insulating and heat-conducting layer is provided between the mounting grooves (111) and the mounting stator teeth (12). 7. The stator structure according to claim 1, characterized in that, The installed stator teeth (12) are oriented silicon steel, and the orientation direction of the silicon steel is arranged in the same direction as the radial direction of the stator yoke (11). 8. A motor, characterized in that it comprises: a casing (3) having an accommodating cavity; and: a rotor, and the stator structure of any one of claims 1-7; wherein the rotor is sleeved outside the stator structure; or The rotor is sleeved in the stator structure. 9. The motor according to claim 8, characterized in that, The casing (3) is provided with a cooling flow channel (31), and the cooling flow channel (31) communicates with the cooling and temperature regulating member (14) through a cooling medium; The cooling channel (31) is the cooling body. 10. The electric machine of claim 9, wherein The cooling component is a heat pipe, the heat absorbing end (151) of the heat pipe is a temperature regulating member (14), the cooling end (152) of the heat pipe is the cooling body, and the cooling end (152) is connected to the cooling body. The cooling channels (31) in the casing (3) are fitted together.

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