Motor, motor pump and vehicle

Abstract

The utility model provides a motor, a motor pump and a vehicle, and relates to the technical field of motors. An electric motor includes a housing, a stator assembly, and a filler. A mounting cavity is formed in the shell; the stator assembly is arranged in the mounting cavity, and a gap is formed between the stator assembly and at least part of the inner surface of the mounting cavity; and the filling agent is filled in the gap, so that the stator assembly is fixed with the shell. The motor provided by the utility model is used for driving, and can improve the installation convenience of the stator assembly on the shell.

Description

Technical Field

[0001] The present application relates to the field of motor technology, and in particular to an electric motor, a motor pump and a vehicle. Background Art

[0002] In the related art, during the assembly process of the stator assembly and the housing of the electric motor, the stator assembly is easily obstructed by the inner surface of the housing, and the installation of the stator assembly on the housing is relatively troublesome. Utility Model Content

[0003] The present application provides an electric motor, a motor pump and a vehicle, which can improve the convenience of installing a stator assembly on a housing.

[0004] In a first aspect, the present application provides an electric motor comprising a housing, a stator assembly, and a filler. The housing defines a mounting cavity; the stator assembly is disposed within the mounting cavity, with a gap formed between the stator assembly and at least a portion of an inner surface of the mounting cavity; and the filler is filled in the gap to secure the stator assembly to the housing.

[0005] Optionally, the filler is an adhesive, and the stator assembly is bonded to the inner surface of the mounting cavity via the filler.

[0006] Optionally, along the radial direction of the stator assembly, a gap is formed between the circumferential outer surface of the stator assembly and the side wall of the installation cavity.

[0007] Optionally, the inner surface of the installation cavity is concave inwardly in a direction away from the stator assembly to form a slot, and the slot is filled with a filler.

[0008] Optionally, the latch groove includes a first latch groove formed in an inner surface of the installation cavity on a portion opposite to a circumferential outer surface of the stator assembly.

[0009] Optionally, the slot further includes a second slot formed in the inner surface of the mounting cavity on a portion opposite to the axial end surface of the stator assembly; the first slot is communicated with the second slot.

[0010] Optionally, the surface of the slot has an arc-shaped structure, the arc-shaped structure extends along a first arc-shaped path, and the plane where the first arc-shaped path is located is perpendicular to the axial direction of the stator assembly; or, the inner surface of the slot includes a first side surface and a second side surface relative to each other, and the relative direction of the first side surface and the second side surface intersects with the axial direction of the stator assembly.

[0011] Optionally, the slot extends along the axial direction of the stator assembly.

[0012] Optionally, along the axial direction of the stator assembly, the slot passes through at least one end of the housing.

[0013] Optionally, along the axial direction of the stator assembly, an installation opening is formed on the end surface of one end of the installation cavity, and the installation opening is used to install the stator assembly; along the axial direction of the stator assembly, the slot passes through the shell to form one end of the installation opening.

[0014] Optionally, the number of the slots is at least two, and the at least two slots are arranged along the circumference of the stator assembly.

[0015] Optionally, the filler is made of polyurethane or epoxy resin.

[0016] In a second aspect, the present application provides a motor pump comprising an impeller and the motor provided in the first aspect of the present application. The output shaft of the motor is drivingly connected to the impeller to drive the impeller to rotate relative to the housing about its own axis.

[0017] In a third aspect, the present application provides a vehicle, the vehicle comprising the electric motor provided in the first aspect of the present application or the motor pump provided in the second aspect of the present application.

[0018] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application.

[0019] The motor provided herein has a gap formed between the stator assembly and at least a portion of the inner surface of the mounting cavity. This allows the stator assembly to enter the mounting cavity with minimal obstruction from the inner surface of the mounting cavity, resulting in a smoother and more convenient entry of the stator assembly into the mounting cavity. By filling the gap with a filler, the stator assembly and the inner surface of the mounting cavity are securely mounted together via the filler, thereby securing the stator assembly to the housing. Furthermore, it is understood that the filler has a strong ability to deform during entry into the gap, allowing it to deform significantly depending on the shape of the gap. This allows the filler to enter the gap with minimal obstruction from the inner surface of the mounting cavity and the stator assembly, making the filling process more convenient. Therefore, in the present application, the stator assembly is securely mounted to the housing via the filler, making entry of the stator assembly into the mounting cavity more convenient, and filling the gap with the filler also more convenient, resulting in easier installation of the stator assembly on the housing. Therefore, the motor provided herein can improve the convenience of installing the stator assembly on the housing.

[0020] In addition, a gap is formed between the stator assembly and at least part of the inner surface of the mounting cavity, and the filler can better fill the gap, so that the matching degree between the stator assembly and the inner surface of the mounting cavity can be slightly smaller, and thus the processing accuracy and assembly accuracy required for the stator assembly and the housing can be slightly smaller, which is beneficial to reducing the cost of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 is a schematic structural diagram of a motor in some embodiments of the present application;

[0023] Figure 2 This is one of the structural schematic diagrams of the housing in some embodiments of the present application;

[0024] Figure 3 This is the second structural schematic diagram of the shell in some embodiments of the present application.

[0025] Description of reference numerals:

[0026] 1-housing; 11-mounting cavity; 12-first slot; 13-mounting opening; 14-second slot; 2-stator assembly; 3-filler; 4-rotor assembly; 5-output shaft; a-rotation axis; b-axial direction of the stator assembly. DETAILED DESCRIPTION

[0027] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and are not to be construed as limiting the present invention. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of this application.

[0028] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. In the description of the present invention, unless otherwise specified, "at least two" means two or more. Furthermore, the term "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0029] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0030] Please refer to Figure 1 、 Figure 2and Figure 3 An embodiment of the present application provides an electric motor, comprising a housing 1, a stator assembly 2, and a filler 3. The housing 1 defines a mounting cavity 11; the stator assembly 2 is disposed within the mounting cavity 11, with a gap formed between the stator assembly 2 and at least a portion of the inner surface of the mounting cavity 11; and the filler 3 is filled in the gap to secure the stator assembly 2 to the housing 1.

[0031] Please refer to Figure 1 、 Figure 2 and Figure 3 In the motor provided by the embodiment of the present application, a gap is formed between the stator assembly 2 and at least part of the inner surface of the installation cavity 11, so that when the stator assembly 2 enters the installation cavity 11, the obstruction by the inner surface of the installation cavity 11 is small, that is, the stator assembly 2 can enter the installation cavity 11 more smoothly and conveniently. By filling the gap with the filler 3, the stator assembly 2 and the inner surface of the installation cavity 11 can be firmly installed together through the filler 3, thereby achieving the fixation of the stator assembly 2 and the housing 1. Moreover, it can be understood that the filler 3 has a strong deformation ability when entering the gap, and can produce a large degree of deformation according to the shape of the gap. This makes the filler 3 less obstructed by the inner surface of the installation cavity 11 and the stator assembly 2 when entering the gap, and the filling process is more convenient. Therefore, in the embodiment of the present application, the stator assembly 2 is firmly installed with the housing 1 through the filler 3, the process of the stator assembly 2 entering the installation cavity 11 is relatively convenient, and the process of the filler 3 filling the gap is also relatively convenient, that is, the stator assembly 2 is relatively convenient to install on the housing 1. Therefore, the electric motor provided in the embodiment of the present application can improve the convenience of installing the stator assembly 2 on the housing 1.

[0032] Please refer to Figure 1 、 Figure 2 and Figure 3 In addition, a gap is formed between the stator assembly 2 and at least part of the inner surface of the installation cavity 11, and the filler 3 can better fill the gap, so that the matching degree between the stator assembly 2 and the inner surface of the installation cavity 11 can be slightly smaller, thereby making the processing accuracy and assembly accuracy required for the stator assembly 2 and the housing 1 can be slightly smaller, which is beneficial to reducing the cost of the motor.

[0033] Please refer to Figure 1 、 Figure 2 and Figure 3It should be explained that the filler 3 in the embodiment of the present application has a strong deformation ability during the process of filling the gap. For example, in this process, the filler 3 can be in the form of fluid, powder or flexible solid. It can be understood that this is the form of the filler 3 during the processing and manufacturing of the motor; in addition, the filler 3 in the embodiment of the present application solidifies after filling the gap to form a rigid structure. This is the form of the filler 3 on the final product of the motor. In this case, the stator assembly 2 and the inner surface of the mounting cavity 11 are supported by the filler 3, so that there is a strong pre-tightening force between the stator assembly 2 and the inner surface of the mounting cavity 11, thereby fixing the stator assembly 2 and the housing 1.

[0034] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments of the present application, the filler 3 is an adhesive, and the stator assembly 2 is bonded to the inner surface of the mounting cavity 11 via the filler 3. By bonding the stator assembly 2 to the inner surface of the mounting cavity 11, the reliability of the installation of the stator assembly 2 and the mounting cavity 11 is improved.

[0035] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments of the present application, the filler 3 is made of polyurethane or epoxy resin. Polyurethane and epoxy resin have high rigidity after curing, providing strong support for the inner surface of the mounting cavity 11 and the stator assembly 2, thereby improving the reliability of the installation of the stator assembly 2 in the mounting cavity 11. Furthermore, polyurethane and epoxy resin have strong adhesion, enabling reliable adhesion of the stator assembly 2 to the inner surface of the mounting cavity 11, thereby improving the reliability of the installation of the stator assembly 2 in the mounting cavity 11.

[0036] Please refer to Figure 1 、 Figure 2 and Figure 3 Of course, in some embodiments of the present application, the filler 3 may not be an adhesive, and the stator assembly 2 and the inner surface of the installation cavity 11 are not bonded by the filler 3. The stator assembly 2 and the inner surface of the installation cavity 11 are supported by the filler 3 to achieve relative fixation.

[0037] Please refer to Figure 1 、 Figure 2 and Figure 3In some embodiments of the present application, a gap is formed between the circumferential outer surface of the stator assembly 2 and the side wall of the installation cavity 11 along the radial direction of the stator assembly 2. In this way, along the radial direction of the stator assembly 2, the filler 3 is supported between the circumferential outer surface of the stator assembly 2 and the side wall of the installation cavity 11, and the side wall of the installation cavity 11 can limit the stator assembly 2 along the radial direction of the stator assembly 2. In addition, along the axial direction b of the stator assembly and the circumferential direction of the stator assembly 2, there is a strong friction force between the stator assembly 2 and the filler 3, and between the filler 3 and the side wall of the installation cavity 11, so that the filler 3 and the side wall of the installation cavity 11 can firmly limit the stator assembly 2 in the axial direction b of the stator assembly and the circumferential direction of the stator assembly 2, so that the reliability of the installation of the stator assembly 2 is high.

[0038] Please refer to Figure 1 、 Figure 2 and Figure 3 It should be explained that, in the embodiment of the present application, the side wall of the installation cavity 11 is the portion of the inner surface of the installation cavity 11 that is opposite to the circumferential outer surface of the stator assembly 2 along the radial direction of the stator assembly 2 .

[0039] Please refer to Figure 1 、 Figure 2 and Figure 3 It should be noted that in the embodiment of the present application, the motor further includes a rotor assembly 4 that mates with the stator assembly 2. The stator assembly 2 drives the rotor assembly 4 to rotate relative to the stator assembly 2. The axis of rotation of the rotor assembly 4 relative to the stator assembly 2 is referred to as the rotation axis a in the figure. The axial direction b of the stator assembly is the axial direction of the rotation axis a, and the radial direction of the stator assembly 2 is the radial direction of the rotation axis a.

[0040] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments of the present application, a gap may be formed between at least a portion of the end surface of one end of the stator assembly 2 and the inner surface of the installation cavity 11 along the axial direction b of the stator assembly to improve the installation stability of the stator assembly 2. In some embodiments of the present application, a gap may be formed between at least a portion of the circumferential outer surface of the stator assembly 2 and the inner surface of the installation cavity 11 along the circumferential direction of the stator assembly 2 to improve the installation stability of the stator assembly 2.

[0041] Please refer to Figure 1 、 Figure 2 and Figure 3In some embodiments of the present application, the inner surface of the mounting cavity 11 is recessed inwardly, away from the stator assembly 2, to form a retaining groove filled with a filler 3. This structural form and the provision of the retaining groove can increase the contact area between the filler 3 and the inner surface of the mounting cavity 11, thereby improving the installation stability of the stator assembly 2. Furthermore, the retaining groove can be engaged with the stator assembly 2 via the filler 3, further improving the installation stability of the stator assembly 2.

[0042] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments of the present application, along the circumference of the stator assembly 2, the retaining groove is engaged with the stator assembly 2 via the filler 3. It is understood that the stator assembly 2 is subjected to a strong magnetic force from the rotor assembly 4 in the circumferential direction, causing the retaining groove to engage with the stator assembly 2 via the filler 3, thereby improving the stability of the installation of the stator assembly 2.

[0043] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments of the present application, the portion of the inner surface of the mounting cavity 11 that avoids the slot also forms a gap with the stator assembly 2. This facilitates smoother insertion of the stator assembly 2 into the mounting cavity 11 and improves the convenience of installing the stator assembly 2 on the housing 1. Of course, in some embodiments of the present application, the portion of the inner surface of the mounting cavity 11 that avoids the slot does not need to form a gap with the stator assembly 2. For example, the portion that avoids the slot can have an interference fit with the stator assembly 2.

[0044] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments of the present application, the retaining groove includes a first retaining groove 12, which is formed in the inner surface of the mounting cavity 11, on a portion opposite to the circumferential outer surface of the stator assembly 2. It can be understood that the circumferential outer surface of the stator assembly 2 is relatively smooth and has a high overall rigidity, which facilitates stable support with the filler 3. The retaining groove is formed on the side wall of the mounting cavity 11, so that the inner surface of the retaining groove can relatively stably support the circumferential outer surface of the stator assembly 2 through the filler 3, which is conducive to improving the installation reliability of the stator assembly 2. Of course, in some embodiments of the present application, a retaining groove can also be formed in a portion of the inner surface of the mounting cavity 11 opposite to the axial end face b of the stator assembly.

[0045] Please refer to Figure 1 、 Figure 2 and Figure 3In some embodiments of the present application, the slot further includes a second slot 14 formed in the inner surface of the mounting cavity 11, on a portion opposite the axial end surface of the stator assembly 2; the first slot 12 communicates with the second slot 14. With this structure, the axial end surface of the stator assembly 2 can be firmly supported on the inner surface of the second slot 14 by the filler 3, which helps improve the stability of the installation of the stator assembly 2. Moreover, the communication between the first slot 12 and the second slot 14 allows the filler 3 to more easily flow from the first slot 12 into the second slot 14, which helps improve the convenience of filling the filler 3. For ease of understanding, the process of the filler 3 entering the second slot 14 in some embodiments of the present application is described below. The filler 3 can first enter the first slot 12, then flow along the inner surface of the first slot 12 toward the second slot 14, and finally enter the second slot 14.

[0046] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments of the present application, the first retaining groove 12 is formed on the side wall of the mounting cavity 11. Along the depth direction of the first retaining groove 12, the circumferential outer surface of the stator assembly 2 is disposed opposite the first retaining groove 12. Furthermore, in some embodiments of the present application, the bottom surface of the first retaining groove 12 is disposed opposite the circumferential outer surface of the stator assembly 2 along the radial direction of the stator assembly 2. This helps to improve the stability of the installation of the stator assembly 2.

[0047] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments of the present application, the surface of the slot is a smooth curved structure. This helps to fully fill the slot with the filler 3, so that the inner surface of the slot and the filler 3 are firmly supported, thereby improving the stability of the stator assembly 2.

[0048] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments of the present application, the surface of the first retaining groove 12 has an arcuate structure, extending along a first arcuate path, with the plane of the first arcuate path perpendicular to the axial direction (b) of the stator assembly. This structure ensures a smooth surface for the first retaining groove 12 and facilitates its manufacture.

[0049] Please refer to Figure 1 、 Figure 2 and Figure 3In some embodiments of the present application, the inner surface of the first slot 12 also includes a first side surface and a second side surface relative to each other, and the relative direction of the first side surface and the second side surface intersects with the axial direction b of the stator assembly, for example, the relative direction of the first side surface and the second side surface is perpendicular to the axial direction b of the stator assembly. Such a structural form is conducive to improving the stability of the support of the inner surface of the first slot 12 and the filler 3. For example, in some embodiments of the present application, the first slot 12 can be a V-shaped slot, a rectangular slot or a trapezoidal slot, etc. The V-shaped slot is the first slot 12 whose cross section perpendicular to the axial direction of the stator assembly 2 is V-shaped, the rectangular slot is the first slot 12 whose cross section perpendicular to the axial direction of the stator assembly 2 is rectangular, and the trapezoidal slot is the first slot 12 whose cross section perpendicular to the axial direction of the stator assembly 2 is trapezoidal.

[0050] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments of the present application, the first retaining groove 12 extends along the axial direction b of the stator assembly. With this structure, the first retaining groove 12 extends a long distance in the axial direction b of the stator assembly. The inner surface of the first retaining groove 12 supports a wide range of the stator assembly 2 in the axial direction, thereby improving the stability of the stator assembly 2.

[0051] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments of the present application, the first slot 12 extends through at least one end of the housing 1 along the axial direction (b) of the stator assembly. This structure facilitates the injection of the filler 3 into the gap. During the injection of the filler 3, the filler 3 can be injected into the first slot 12 through the end of the housing 1 through which the first slot 12 extends. The first slot 12 can guide the flow of the filler 3, causing the filler 3 to flow along the extension direction of the first slot 12, thereby filling the gap.

[0052] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments of the present application, along the axial direction b of the stator assembly, the first slot 12 passes through at least one end of the housing 1, so that the first slot 12 forms a nozzle, and the motor further includes a cover body, which blocks the nozzle. In this way, the cover body blocks the nozzle and improves the sealing effect on the stator assembly 2. Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments of the present application, along the axial direction b of the stator assembly, the injection gate and the second slot 14 can be located on opposite sides of the stator assembly 2.

[0053] Please refer to Figure 1 、 Figure 2 and Figure 3In some embodiments of the present application, along the axial direction b of the stator assembly, an installation opening 13 is formed on the end surface of one end of the installation cavity 11. The installation opening 13 is used to install the stator assembly 2. Along the axial direction b of the stator assembly, the first slot 12 extends through the housing 1 to form one end of the installation opening 13. By extending the first slot 12 through the housing 1 to form one end of the installation opening 13 along the axial direction b of the stator assembly, the installation opening 13 provides a larger operating space for injecting the filler 3 into the first slot 12, thereby improving operational convenience.

[0054] Please refer to Figure 1 、 Figure 2 and Figure 3 In the embodiment of the present application, the mounting opening 13 is used to install the stator assembly 2, that is, the stator assembly 2 can be installed in the mounting cavity 11 through the mounting opening 13, and the outline of the mounting opening 13 is larger than the circumferential outline of the stator assembly 2.

[0055] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments of the present application, the cover body cooperates with the mounting opening 13 , which is beneficial to improving the sealing effect on the stator assembly 2 .

[0056] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments of the present application, the housing 1 is formed by casting, such as die casting. In this way, by making the first slot 12 pass through the housing 1 along the axial direction b of the stator assembly to form one end of the mounting opening 13, the housing 1 is easily ejected from the mold. Specifically, the mold of the housing 1 can be easily ejected from the housing 1 through the mounting opening 13, that is, the ejection direction of the housing 1 is the opposite direction of the mounting opening 13. Along the axial direction b of the stator assembly, the first slot 12 passes through the housing 1 to form one end of the mounting opening 13, so that the portion of the mold of the housing 1 used to form the first slot 12 can be easily ejected from the first slot 12 through the sprue, making the ejection process more convenient.

[0057] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments of the present application, along the first direction, the distance between two areas of the inner surface of the first card slot 12 that are opposite to each other along the second direction gradually increases. The first direction is parallel to the extension direction of the first card slot 12, and is directed from the side of the injection gate close to the first card slot 12 to the side of the injection gate away from the first card slot 12. The second direction is perpendicular to the first direction and is perpendicular to the depth direction of the first card slot 12. This is conducive to improving the convenience of demolding. On this basis, in some embodiments of the present application, the inner surface of the first card slot 12 is part of a conical surface, and the central axis of the conical surface is parallel to the axial direction b of the stator assembly. Such a structural form facilitates the processing and manufacturing of the first card slot 12.

[0058] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments of the present application, there are at least two slots, and at least two slots are arranged along the circumference of the stator assembly 2. With this structure, the stator assembly 2 can be supported by the slots over a large range along the circumference of the stator assembly 2, which helps improve the reliability of the installation of the stator assembly 2. In some embodiments of the present application, at least two slots are spaced apart along the circumference of the stator assembly 2. This structure helps ensure that the forces applied to various parts of the stator assembly 2 along the circumference are more uniform, which helps improve the stability of the stator assembly 2 during the operation of the motor.

[0059] Please refer to Figure 1 、 Figure 2 and Figure 3 In some embodiments of the present application, the number of the first slots 12 can be at least two, and the at least two first slots 12 are arranged along the circumference of the stator assembly 2. On this basis, in some embodiments of the present application, the number of the second slots 14 can also be at least two, and the at least two second slots 14 are arranged in a one-to-one correspondence with the at least two first slots 12.

[0060] Please refer to Figure 1 、 Figure 2 and Figure 3 The present application also provides a motor pump, which includes an impeller and a motor provided in an embodiment of the present application. The output shaft 5 of the motor is in driving connection with the impeller to drive the impeller to rotate relative to the housing 1 about its own axis.

[0061] Please refer to Figure 1 、 Figure 2 and Figure 3 The present application also provides a vehicle, comprising the electric motor provided in the embodiments of the present application, and also comprising the motor pump provided in the embodiments of the present application. The vehicle can be implemented in various forms, for example, a sedan, an off-road vehicle, and a sport utility vehicle (SUV).

[0062] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or at least two embodiments or examples.

[0063] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions, and alterations may be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. An electric motor, characterized in that: include: A housing (1) is formed with a mounting cavity (11); A stator assembly (2) is disposed in the installation cavity (11), with a gap formed between the stator assembly (2) and at least a portion of the inner surface of the installation cavity (11); A filler (3) is filled in the gap to fix the stator assembly (2) and the housing (1).

2. The electric motor according to claim 1, characterized in that: The filler (3) is an adhesive, and the stator assembly (2) and the inner surface of the installation cavity (11) are bonded together via the filler (3).

3. The electric motor according to claim 1, characterized in that: Along the radial direction of the stator assembly (2), the gap is formed between the circumferential outer surface of the stator assembly (2) and the side wall of the installation cavity (11).

4. The electric motor according to claim 1, characterized in that: The inner surface of the installation cavity (11) is concave in a direction away from the stator assembly (2), forming a slot, and the slot is filled with a filler (3).

5. The electric motor according to claim 4, characterized in that: The card slot comprises a first card slot (12), which is formed in the inner surface of the installation cavity (11) on a portion opposite to the circumferential outer surface of the stator assembly (2).

6. The electric motor according to claim 5, characterized in that: The card slot further includes a second card slot (14), which is formed in the inner surface of the mounting cavity (11) on a portion opposite to the axial end surface of the stator assembly (2); the second card slot (14) is communicated with the first card slot (12).

7. The electric motor according to claim 5, characterized in that The inner surface of the first slot (12) is an arcuate structure, the arcuate structure extends along a first arcuate path, and the plane where the first arcuate path is located is perpendicular to the axial direction (b) of the stator assembly; or the inner surface of the first slot (12) includes a first side surface and a second side surface opposite to each other, and the direction in which the first side surface and the second side surface are opposite to each other intersects with the axial direction (b) of the stator assembly.

8. The electric motor according to claim 5, characterized in that The first clamping groove (12) extends along the axial direction (b) of the stator assembly.

9. The electric motor according to claim 8, characterized in that Along the axial direction (b) of the stator assembly, the first clamping groove (12) passes through at least one end of the housing (1).

10. The electric motor according to claim 9, characterized in that Along the axial direction (b) of the stator assembly, an installation opening (13) is formed on the end surface of one end of the installation cavity (11), and the installation opening (13) is used to install the stator assembly (2); along the axial direction (b) of the stator assembly, the first clamping groove (12) passes through the housing (1) to form one end of the installation opening (13).

11. The electric motor according to any one of claims 4 to 10, characterized in that: The number of the slots is at least two, and at least two of the slots are arranged along the circumference of the stator assembly (2).

12. The electric motor according to any one of claims 1 to 10, characterized in that: The material of the filler (3) is polyurethane or epoxy resin.

13. A motor pump, characterized in that: include: impeller; The motor according to any one of claims 1 to 12, wherein the output shaft (5) of the motor is transmission-connected to the impeller to drive the impeller to rotate relative to the housing (1) about its own axis.

14. A vehicle, characterized in that: include: The electric motor according to any one of claims 1 to 12, or the motor pump according to claim 13.

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