Motor

Abstract

The invention provides a motor, which comprises a rotating shaft and an end cover, one end of the rotating shaft is a detection end, the end cover is provided with a shaft hole, the detection end is arranged in the shaft hole in a penetrating manner, the detection end is provided with a transformer rotor, and the end cover is provided with a transformer stator; the end cover is provided with a partition plate, the partition plate completely covers the shaft hole in a sealing manner, the partition plate comprises a non-magnetic part, and the non-magnetic part is arranged between the transformer rotor and the transformer stator, so that the problems that in the prior art, external water and impurities easily enter an inner cavity of a motor from an installation cavity for installing the transformer stator, and the motor is damaged are solved. And a rotor and a stator of the motor are damaged.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a motor. Background Art

[0002] Permanent magnet synchronous motors generally need to install a rotary transformer to detect the position and speed of the motor rotor for motor control. The motor's rotary transformer installation structure is that the rotary transformer rotor is installed on the motor rotor and rotates coaxially with the motor rotor. The rotary transformer stator is installed in the installation cavity of the motor end cover, and a signal line needs to be connected to the motor controller to decode and identify the motor rotor position and speed information. The rotor of the motor's rotary transformer is in the rotary transformer stator, coaxial with the rotary transformer stator, and the rotary transformer stator core and the rotary transformer rotor core need to be aligned in the axial direction. There are salient poles on the rotor, and the rotary transformer stator has windings. The rotation of the rotary transformer rotor can induce a corresponding voltage signal in the rotary transformer, which is decoded and used in the motor controller.

[0003] The protection performance of the motor equipped with a selection transformer is directly related to the reliability and service life of the motor. The rotary transformer rotor is installed on the rotor shaft, and the rotary transformer stator and the rotary transformer rotor are coaxially installed on the housing. The housing is provided with an installation space and the rotary transformer is protected by a cover. The rotary transformer signal line is led out of the motor and connected to the controller. A wire hole and a wire harness lead-out structure are arranged inside the motor. A wire harness adapter plug is installed on the motor. One end of the signal line is connected to the rotary transformer, and the other end is connected to the adapter plug. However. The wire outlet hole and the adapter plug are prone to the problem of wire outlet protection failure. For motors with a protection level of IP67 or above, the failure of protection will cause water to enter the motor, causing damage to the rotor and stator (non-transformer stator and rotor) of the motor, such as leakage, short circuit and other accidents.

[0004] When the protection at the outlet hole fails, how to prevent the liquid that enters the installation cavity for installing the transformer stator from entering the inner cavity of the motor (the space where the motor rotor and stator are set) is a technical problem that urgently needs to be solved. Summary of the invention

[0005] Therefore, the present invention provides a motor that can solve the technical problem in the prior art that external water and impurities easily enter the inner cavity of the motor from the installation cavity for installing the transformer stator, causing damage to the rotor and stator of the motor.

[0006] The present invention provides a motor, comprising a rotating shaft and an end cover, wherein one end of the rotating shaft is a detection end, an axial hole is provided on the end cover, the detection end is inserted into the axial hole, a transformer rotor is provided on the detection end, and a transformer stator is provided on the end cover; a partition plate is provided on the end cover, the partition plate completely seals and covers the axial hole, the partition plate comprises a non-magnetic conductive portion, and the non-magnetic conductive portion is provided between the transformer rotor and the transformer stator.

[0007] In some embodiments, the transformer rotor includes protruding salient poles, the salient poles are oriented toward the non-magnetic conductive portion, and the magnetic poles generated when the transformer stator is energized are oriented toward the non-magnetic conductive portion.

[0008] In some embodiments, there are multiple salient poles, and the multiple salient poles are evenly arranged around the axis of the rotating shaft.

[0009] In some embodiments, the salient pole is covered with a first non-magnetic conductive layer, the first non-magnetic conductive layer includes a first plane facing the non-magnetic conductive portion, the non-magnetic conductive portion is a planar plate, and the first plane is in sliding contact with the planar plate; or, a first preset interval is formed between the first plane and the planar plate.

[0010] In some embodiments, when a first preset interval is set, the first plane is parallel to the planar plate.

[0011] In some embodiments, the salient pole is covered with a second non-magnetic layer, the second non-magnetic layer includes a second cylindrical surface facing the non-magnetic portion, the non-magnetic portion is an annular plate, the second cylindrical surface is located on the inner side of the annular plate, and the second cylindrical surface is in sliding contact with the inner circular surface of the annular plate; or, a second preset interval is formed between the second cylindrical surface and the inner circular surface of the annular plate.

[0012] In some embodiments, when a second preset interval is provided, the axis of the second cylindrical surface coincides with the axis of the annular plate.

[0013] In some embodiments, the partition plate and the end cover are an integral structure.

[0014] In some embodiments, the partition plate is provided with a first mounting hole, the transformer stator is provided with a second mounting hole, the second mounting hole is connected to the first mounting hole, and the transformer stator and the partition plate are fixed to the end cover by bolts passing through the first mounting hole and the second mounting hole.

[0015] In some embodiments, a detection cavity is provided on the end cover, the detection cavity is provided on one axial side of the axial hole, the transformer stator and the transformer rotor are both provided in the detection cavity, the detection cavity has an opening, and the opening is sealed by a cover plate.

[0016] The present invention provides a partition plate between the transformer stator and the transformer rotor, thereby preventing external water, impurities, etc. from entering the motor through the space and shaft hole where the transformer stator and the transformer rotor are installed, thereby improving the protection performance of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0018] Figure 1 is an oblique view of the transformer rotor and the transformer stator according to an embodiment of the present invention when they are distributed along the axial direction of the rotating shaft;

[0019] Figure 2 The embodiment of the present invention Figure 1 A schematic diagram of a transformer rotor provided with a first non-magnetic conductive layer;

[0020] Figure 3 The embodiment of the present invention Figure 1 Schematic diagram of transformer stator structure in FIG.

[0021] Figure 4 It is a radial schematic diagram of a transformer rotor and a transformer stator according to an embodiment of the present invention distributed along the axial direction of a rotating shaft, and a partition plate and an end cover having an integral structure;

[0022] Figure 5 is an oblique view of the transformer rotor and the transformer stator according to an embodiment of the present invention when they are distributed along the radial direction of the rotating shaft;

[0023] Figure 6 It is a radial schematic diagram of a transformer rotor and a transformer stator according to an embodiment of the present invention distributed along the radial direction of a rotating shaft, and a partition plate and an end cover having an integral structure;

[0024] Figure 7 The embodiment of the present invention Figure 5 Axial schematic diagram of the transformer rotor, transformer stator and partition plate when assembled together;

[0025] Figure 8 The embodiment of the present invention Figure 7 Enlarged view of point B in the middle;

[0026] Fig. 9 It is a schematic diagram of a transformer stator and a transformer rotor according to an embodiment of the present invention being distributed along the axial direction of a rotating shaft, and a partition plate and an end cover being separately provided;

[0027] Fig.10 It is a schematic diagram of a transformer stator and a transformer rotor according to an embodiment of the present invention distributed along the radial direction of a rotating shaft, and a partition plate and an end cover are separately provided;

[0028] Fig.11 The embodiment of the present invention Fig.10 Enlarged view of point C in the middle;

[0029] Fig.12 It is a radial schematic diagram of the transformer rotor and the transformer stator in the prior art when no partition plate is provided between them;

[0030] Fig.13 It is an axial schematic diagram of the transformer rotor and the transformer stator in the prior art when no partition plate is provided between them;

[0031] The accompanying drawings are marked as follows:

[0032] 1. Rotating shaft; 101. Detection end; 2. End cover; 201. Shaft hole; 3. Partition plate; 301. Non-magnetic conductive part; 401. Transformer rotor; 402. Transformer stator; 4011. Salient pole; 501. First non-magnetic conductive layer; 5011. First plane; 502. Second non-magnetic conductive layer; 5021. Second cylindrical surface; 601. First mounting hole; 602. Second mounting hole; 701. Pad; 702. Cover plate; 703. Detection cavity; 801. Wiring harness; 802. Conversion connector. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0035] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0036] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0037] See also Figure 1-11 As shown, a motor provided by the present invention comprises a rotating shaft 1 and an end cover 2, wherein one end of the rotating shaft 1 is a detection end 101, an axial hole 201 is provided on the end cover 2, the detection end 101 is penetrated in the axial hole 201, a transformer rotor 401 is provided on the detection end 101, and a transformer stator 402 is provided on the end cover 2; a partition plate 3 is provided on the end cover 2, the partition plate 3 completely seals and covers the axial hole 201, the partition plate 3 comprises a non-magnetic portion 301, and the non-magnetic portion 301 is provided between the transformer rotor 401 and the transformer stator 402.

[0038] In the prior art, such as Fig.12 and Fig.13 As shown, there is no partition between the transformer stator and the transformer rotor, and external water, impurities, etc. can easily enter the motor from the shaft hole; the transformer is arranged on the motor, also known as a rotary transformer. In the present application, the detection end 101 is arranged in the shaft hole 201, and the partition plate 3 is arranged, and the partition plate 3 completely seals and covers the shaft hole 201, and is arranged between the transformer rotor 401 and the transformer stator 402. The partition plate 3 includes a non-magnetic conductive part 301, and the non-magnetic conductive part 301 is arranged between the transformer rotor 401 and the transformer stator 402, and the non-magnetic conductive part 301 has the function of an air gap. The arrangement of the partition plate 3 prevents external impurities such as liquid, steam, dust, etc. from entering the motor through the shaft hole 201, thereby improving the protection of the motor.

[0039] The transformer rotor 401 can be fixed to the detection end 101 of the rotating shaft 1 by bolts. Fig.10 As shown, it can also be fixed to the detection end 101 of the rotating shaft 1 through a pressing plate.

[0040] Preferably, Figure 2 , Figure 7 and Figure 8 As shown, the transformer rotor 401 includes a protruding salient pole 4011 , and the salient pole 4011 faces the non-magnetic conductive portion 301 . When the transformer stator 402 is energized, the magnetic pole generated faces the non-magnetic conductive portion 301 .

[0041] The salient pole 4011 of the transformer faces the non-magnetic portion 301, and one of the two magnetic poles generated by the transformer stator 402 when energized faces the non-magnetic portion 301, which shortens the magnetic circuit length and improves the accuracy of the magnetic circuit, thereby facilitating the improvement of the sensitivity and accuracy of the motor.

[0042] Preferably, Figure 2 , Figure 7 As shown, there are multiple salient poles 4011 , and the multiple salient poles 4011 are evenly arranged around the axis of the rotating shaft 1 .

[0043] A plurality of salient poles 4011 are arranged around the axis of the rotating shaft 1 . When the rotating shaft 1 rotates, the arrangement of the plurality of salient poles 4011 can more accurately detect the rotation status of the rotating shaft 1 .

[0044] Preferably, Figure 2 As shown, the salient pole 4011 is covered with a first non-magnetic conductive layer 501, and the first non-magnetic conductive layer 501 includes a first plane 5011 facing the non-magnetic conductive part 301, and the non-magnetic conductive part 301 is a planar plate, and the first plane 5011 is in sliding contact with the planar plate; or, a first preset interval is formed between the first plane 5011 and the planar plate.

[0045] In this embodiment, if Figure 1 , Figure 4 , Fig. 9 As shown, the transformer stator 402 and the transformer rotor 401 are distributed along the axial direction of the rotating shaft 1, and the direction of the salient pole 4011 is also along the axial direction of the rotating shaft 1 toward the transformer stator 402; the salient pole 4011 forms a peak, and a trough is formed between two adjacent salient poles 4011, and the peaks and troughs on the transformer rotor 401 make the transformer stator 402 sense the rotation position of the transformer rotor 401.

[0046] The first plane 5011 is in sliding contact with the plane plate or forms a first preset interval, that is, the transformer rotor 401 , the non-magnetic conductive portion 301 and the transformer stator 402 are sequentially arranged along the axial direction of the rotating shaft 1 .

[0047] The first plane 5011 is in sliding contact with the plane plate, which is conducive to making the distance between the multiple salient poles 4011 and the non-magnetic portion 301 the same, thereby improving the sensitivity and accuracy of the induction between the transformer rotor 401 and the transformer stator 402. Further, lubricating oil is applied on the first plane 5011 to reduce friction. Further, a first gap is formed between the first non-magnetic layer 501 and the trough, that is, the first non-magnetic layer 501 does not cover the trough, and the first gap passes through the transformer rotor 401 along the radial direction of the shaft 1. When the shaft 1 rotates, the air flow in the first gap can accelerate the heat dissipation of the transformer rotor 401.

[0048] A first preset interval is formed between the first plane 5011 and the plane plate, and the transformer rotor 401 does not rub against the non-magnetic conductive part 301 when rotating, thus avoiding the generation of friction heat and facilitating the stability of the motor operation. Further, the first preset interval is 0.5 mm to 1 mm.

[0049] Furthermore, blades are provided at the detection end 101 , and when the shaft 1 rotates, the blades rotate to accelerate the flow of air within the first preset interval, further avoiding the influence of temperature changes on the magnetic field of the transformer rotor 401 .

[0050] Furthermore, the transformer stator 402 is disposed close to the non-magnetic conductive portion 301. The first non-magnetic conductive layer 501 is made of aluminum alloy, stainless steel or brass.

[0051] Preferably, when a first preset interval is provided, the first plane 5011 is parallel to the plane plate.

[0052] The first plane 5011 is parallel to the plane plate, that is, the distance between the salient pole 4011 and the plane plate is the same, which improves the stability and accuracy of the magnetic circuit formed between the transformer rotor 401 and the transformer stator 402.

[0053] Preferably, Figure 5-8 As shown, the salient pole 4011 is covered with a second non-magnetic layer 502, and the second non-magnetic layer 502 includes a second cylindrical surface 5021 facing the non-magnetic part 301, and the non-magnetic part 301 is a circular ring plate. The second cylindrical surface 5021 is located on the inner side of the circular ring plate, and the second cylindrical surface 5021 is in sliding contact with the inner circular surface of the circular ring plate; or, a second preset interval is formed between the second cylindrical surface 5021 and the inner circular surface of the circular ring plate.

[0054] In this embodiment, the transformer stator 402 is sleeved on the outside of the transformer rotor 401, and the salient poles 4011 are distributed around the axis of the rotating shaft 1, and the salient poles 4011 face the inner wall surface of the transformer stator 402; the salient poles 4011 on the transformer stator 402 form peaks, and there is a trough between two adjacent peaks. The peaks and troughs on the transformer rotor 401 enable the transformer stator 402 to sense the rotation position of the transformer rotor 401.

[0055] Along the radial direction of the rotating shaft 1 , from inside to outside, a transformer rotor 401 , a circular ring plate and a transformer stator 402 are arranged in sequence.

[0056] The second cylindrical surface 5021 is in sliding contact with the inner surface of the annular plate, so that the distance between the multiple salient poles 4011 and the transformer stator 402 is consistent, which improves the stability and accuracy of the magnetic circuit formed between the transformer rotor 401 and the transformer stator 402. Lubricating oil is coated on the second cylindrical surface 5021 to reduce friction and reduce the heat generated by friction. Furthermore, a second gap is formed between the second non-magnetic conductive layer 502 and the trough, that is, the second non-magnetic conductive layer 502 does not cover the trough, and the second gap passes through both ends of the transformer rotor 401 along the axial direction of the shaft 1. In this way, when the shaft 1 rotates, air flows through the second gap, which can cool the transformer rotor 401.

[0057] A second preset interval is formed between the second cylindrical surface 5021 and the inner circular surface of the annular plate to avoid direct contact and friction heat generation. The distance between the first and second preset intervals is 0.5 mm to 1 mm.

[0058] Preferably, when a second preset interval is provided, the axis of the second cylindrical surface 5021 coincides with the axis of the annular plate.

[0059] The axis of the second cylindrical surface 5021 coincides with the axis of the annular plate, so that the second preset interval is an annular surface, and the size of the second preset interval is a certain value, which further improves the stability and accuracy of the magnetic circuit formed between the transformer rotor 401 and the transformer stator 402.

[0060] Preferably, Figure 4 and Figure 6 As shown, the partition plate 3 and the end cover 2 are an integral structure.

[0061] The partition plate 3 and the end cover 2 are an integral structure, so that there is no gap between the partition plate 3 and the end cover 2, and there is no sealing problem, so that liquid, dust, etc. outside the motor are completely prevented from entering the shaft hole 201 on the end cover 2, that is, they cannot enter the motor through the shaft hole 201 on the end cover 2, thereby improving the protection performance of the motor. The end cover 2 and the partition plate 3 can be made of aluminum alloy.

[0062] Preferably, Fig. 9 , Fig.10 , Fig.11 As shown, the partition plate 3 is provided with a first mounting hole 601, and the transformer stator 402 is provided with a second mounting hole 602, the second mounting hole 602 is connected to the first mounting hole 601, and the transformer stator 402 and the partition plate 3 are fixed to the end cover 2 by bolts passing through the first mounting hole 601 and the second mounting hole 602.

[0063] The partition plate 3 and the end cover 2 are two independent structures. Through the first mounting hole 601 on the partition plate 3 and the second mounting hole 602 on the transformer stator 402, bolts simultaneously fix the partition and the transformer stator 402 to the end cover 2. In this way, on the one hand, it is convenient for the processing and installation of parts; on the other hand, it is convenient for modular production and reduces costs.

[0064] Furthermore, the mounting surface between the partition plate 3 and the end cover 2 is provided with a sealant, a sealing ring, etc. for sealing. The end cover 2 and the partition plate 3 can be made of different materials. Fig.11 As shown, a spacer 701 may be provided between the transformer stator 402 and the partition plate 3 so that the partition plate 3 and the end cover 2 can be sealed and pressed.

[0065] Preferably, Fig.10 As shown, a detection cavity 703 is provided on the end cover 2, and the detection cavity 703 is arranged on the axial side of the shaft hole 201. The transformer stator 402 and the transformer rotor 401 are both arranged in the detection cavity 703. The detection cavity 703 has an opening, and the opening is sealed by a cover plate 702.

[0066] By setting the detection cavity 703, the transformer rotor 401 and the transformer stator 402 are both set in the detection cavity 703, the detection cavity 703 is set with an opening, and the opening is sealed with a cover plate 702; in this way, the installation and sealing of the transformer rotor 401 and the transformer stator 402 are facilitated. The cover plate 702 seals the detection cavity 703, thus further improving the sealing performance of the motor. External liquid and dust need to pass through the cover plate 702 and the partition plate 3 to enter the interior of the motor, and the sealing performance is high. When the protection of the cover plate 702 fails, when external water enters the detection cavity 703, due to the setting of the partition plate 3, the water will not further enter the interior of the motor through the shaft hole 201, which effectively ensures the safety inside the motor and improves the overall protection of the motor.

[0067] like Figure 4 , Figure 6 As shown, the wiring harness 801 on the transformer stator 402 is connected to the cover plate 702 , and a conversion connector 802 is provided on the cover plate 702 .

[0068] According to whether the partition plate 3 is integrated with the end cover 2, it can be divided into two types. One is an integrated setting, and the material is preferably aluminum alloy, and the sealing of the integrated setting is better; the other is a separate setting, which is set separately and then installed together, and the contact surface is sealed with a seal, which is low in cost. According to the positional relationship between the transformer stator 402 and the transformer rotor 401, it can be divided into two types. One is that the transformer rotor 401 and the transformer stator 402 are distributed along the axial direction of the rotating shaft 1; the other is that the transformer rotor 401 and the transformer stator 402 are distributed along the radial direction of the rotating shaft 1, and the transformer rotor 401 is arranged on the inner side of the transformer stator 402. It is easy for technicians in this field to understand that, under the premise of no conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A motor, comprising a rotating shaft (1) and an end cover (2), wherein one end of the rotating shaft (1) is a detection end (101), and the end cover (2) is provided with an axial hole (201), and the detection end (101) is inserted into the axial hole (201), characterized in that: The detection end (101) is provided with a transformer rotor (401), and the end cover (2) is provided with a transformer stator (402); a partition plate (3) is provided on the end cover (2), the partition plate (3) completely seals and covers the shaft hole (201), and the partition plate (3) includes a non-magnetic conductive portion (301), and the non-magnetic conductive portion (301) is provided between the transformer rotor (401) and the transformer stator (402).

2. The motor according to claim 1, characterized in that The transformer rotor (401) comprises a protruding salient pole (4011), wherein the salient pole (4011) faces the non-magnetic conductive portion (301), and the magnetic pole generated when the transformer stator (402) is energized faces the non-magnetic conductive portion (301).

3. The motor according to claim 2, characterized in that There are a plurality of salient poles (4011), and the plurality of salient poles (4011) are evenly arranged around the axis of the rotating shaft (1).

4. The motor according to claim 3, characterized in that The salient pole (4011) is covered with a first non-magnetic conductive layer (501), the first non-magnetic conductive layer (501) includes a first plane (5011) facing the non-magnetic conductive portion (301), the non-magnetic conductive portion (301) is a plane plate, and the first plane (5011) is in sliding contact with the plane plate; or, a first preset interval is formed between the first plane (5011) and the plane plate.

5. The motor according to claim 4, characterized in that When a first preset interval is set, the first plane (5011) is parallel to the plane plate.

6. The motor according to claim 3, characterized in that The salient pole (4011) is covered with a second non-magnetic conductive layer (502), the second non-magnetic conductive layer (502) includes a second cylindrical surface (5021) facing the non-magnetic conductive portion (301), the non-magnetic conductive portion (301) is a circular ring plate, the second cylindrical surface (5021) is located on the inner side of the circular ring plate, and the second cylindrical surface (5021) is in sliding contact with the inner circular surface of the circular ring plate; or, a second preset interval is formed between the second cylindrical surface (5021) and the inner circular surface of the circular ring plate.

7. The motor according to claim 6, characterized in that When a second preset interval is provided, the axis of the second cylindrical surface (5021) coincides with the axis of the annular plate.

8. The motor according to any one of claims 1 to 7, characterized in that: The partition plate (3) and the end cover (2) are an integral structure.

9. The motor according to any one of claims 1 to 7, characterized in that: The partition plate (3) is provided with a first mounting hole (601), the transformer stator (402) is provided with a second mounting hole (602), the second mounting hole (602) is communicated with the first mounting hole (601), and the transformer stator (402) and the partition plate (3) are fixed to the end cover (2) by bolts passing through the first mounting hole (601) and the second mounting hole (602).

10. The motor according to any one of claims 1 to 7, characterized in that: The end cover (2) is provided with a detection cavity (703), the detection cavity (703) is arranged on one axial side of the axial hole (201), the transformer stator (402) and the transformer rotor (401) are both arranged in the detection cavity (703), and the detection cavity (703) has an opening, which is sealed by a cover plate (702).

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