Motor assembly and electric water pump

Abstract

The utility model relates to a motor assembly, which is used for an electric water pump and comprises a stator iron core, a rotor mounting cavity is arranged in the middle of the stator iron core, a plurality of stator grooves are circumferentially arranged on the inner side of the stator iron core, the inner diameter of the rotor mounting cavity ranges from 60mm to 60.1 mm, and the inner diameter of the rotor mounting cavity ranges from 60mm to 60.1 mm. The outer end part of each stator groove is provided with a first arc, the inner end of each stator groove is provided with a stator groove opening, the inner diameter of each first arc ranges from 3.7 mm to 3.8 mm, and the depth of each stator groove ranges from 16.5 mm to 16.7 mm; the rotor iron core is matched with the rotor mounting cavity, a plurality of rotor grooves are formed in the outer side of the stator iron core in the circumferential direction, and the depth size range of the rotor grooves is 10.3-10.4 mm; and the stator slots are arranged corresponding to the stator slots. According to the motor assembly disclosed by the utility model, the performance of an electric water pump of the same type with the outer diameter size of the stator iron core being 120mm is effectively improved, and the torque, the temperature rise characteristic and the efficiency of the motor are greatly improved.

Description

Technical Field

[0001] The utility model relates to a motor component and an electric water pump, belonging to the technical field of water pump equipment. Background Art

[0002] The water pump motor is an electric motor specially designed to drive the water pump. Our manufacturer usually produces induction motors when producing water pump motors. This type of motor usually consists of a stator core and a rotor core installed in conjunction with the stator core. The outer diameter of the stator core is about 120mm. The depth of the stator slot in the existing stator core is about 11.5mm, and the width of the outer end structure of the stator slot is less than 3.2mm. The overall heat dissipation performance, current carrying capacity and electromagnetic compatibility performance of the rotor core matched with the stator core in the water pump drive still have room for improvement. In view of the shortcomings of the existing technology, it is necessary to propose a new technical solution. Utility Model Content

[0003] The utility model provides a motor component, aiming to solve at least one of the technical problems existing in the prior art.

[0004] The technical solution of the utility model is a motor component for an electric water pump, comprising: a stator core, a rotor mounting cavity is provided in the middle of the stator core, a plurality of stator slots are provided in the inner circumferential direction of the stator core, an inner diameter size range of the rotor mounting cavity is 60 mm to 60.1 mm, a first arc is provided at the outer end of the stator slot and a stator slot opening is provided at the inner end, the inner diameter size range of the first arc is 3.7 mm to 3.8 mm, and the depth size range of the stator slot is 16.5 mm to 16.7 mm; a rotor core matched with the rotor mounting cavity, a plurality of rotor slots are provided in the outer circumferential direction of the stator core, and the depth size range of the rotor slot is 10.3 to 10.4 mm; wherein the stator slots are arranged corresponding to the rotor slots.

[0005] Furthermore, 24 stator slots are evenly arranged in the inner circumferential direction of the stator core.

[0006] Furthermore, 18 rotor slots are provided in the circumferential direction of the outer side of the stator core.

[0007] Furthermore, the outer diameter of the stator core is 120 mm.

[0008] Furthermore, the periphery of the stator core is provided with a plurality of first bayonet holes which are matched and mounted with the housing.

[0009] Furthermore, a shaft through hole is provided in the middle of the rotor core, and a first through hole is also provided on the shaft through hole.

[0010] An electric water pump comprises the motor assembly as described above.

[0011] The beneficial effects of the utility model include:

[0012] 1. The stator slots of the stator core of the present scheme have a significant change in size compared with the stator core of the prior art. The stator slots can accommodate a larger volume of stator windings. When accommodating stator coil windings with the same number of turns, the wire diameter of the stator coil of the present scheme can be larger. The thicker wire diameter means that the surface area of ​​each wire is larger, so the heat dissipation performance is better, which can reduce the heat accumulation caused by the current passing through the wire. At the same time, the use of a thicker wire diameter may help reduce electromagnetic interference because the magnetic field gradient generated by the thicker wire is smaller.

[0013] 2. The motor composed of the rotor core of the above size and the stator core is used in the electric water pump, which makes the electric water pump of the same type with the outer diameter of the stator core of 120mm achieve effective performance improvement, and the torque, temperature rise characteristics and efficiency of the motor have a lot of performance improvement.

[0014] In addition, additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall schematic diagram of a motor assembly according to an embodiment of the utility model.

[0016] Figure 2 It is a detailed schematic diagram of a stator core according to an embodiment of the utility model.

[0017] Figure 3 It is a detailed schematic diagram of the stator slot according to an embodiment of the utility model.

[0018] Figure 4 It is a detailed schematic diagram of a rotor core according to an embodiment of the utility model.

[0019] Figure 5 It is a detailed schematic diagram of a rotor slot according to an embodiment of the utility model. DETAILED DESCRIPTION

[0020] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the utility model, so as to fully understand the purpose, scheme and effect of the utility model. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other without conflict.

[0021] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, top, bottom, etc. used in the present invention are only relative to the relative positional relationship of the various components of the present invention in the accompanying drawings.

[0022] In addition, unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art. The terms used in this specification are only for describing specific embodiments, not for limiting the present invention. The term "and / or" used herein includes any combination of one or more related listed items.

[0023] It should be understood that, although the terms first, second, third, etc. may be used to describe various elements in the present disclosure, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from each other. For example, without departing from the scope of the present disclosure, the first element may also be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0024] Reference Figures 1 to 5 As shown, in some embodiments, the utility model discloses a motor assembly for an electric water pump, comprising:

[0025] Reference Figure 1 The stator core 10 shown has a rotor mounting cavity 11 in the middle thereof, which is a common structure of the stator core 10 in a motor.

[0026] Reference Figure 1 As shown, the inner circumferential direction of the stator core 10 is provided with a plurality of stator slots 12, referring to Figure 1 Combination Figure 2 The stator core 10 has a structure in which 24 stator slots 12 are evenly arranged in the inner circumferential direction of the stator core 10. The structure of the stator slot is used to accommodate the stator winding. A group of stator copper wire windings is arranged between adjacent stator slots 12. The stator winding generates a rotating magnetic field by passing alternating current. At the same time, the rotating magnetic field generated by the stator winding interacts with the rotor, and an induced current is generated in the rotor through electromagnetic induction, thereby realizing the conversion of electrical energy into mechanical energy.

[0027] The stator core is optimized for the following structural dimensions: the inner diameter of the rotor mounting cavity 11 ranges from 60mm to 60.1mm, the outer end of the stator slot 12 is provided with a first arc 121 and the inner end is provided with a stator slot opening 122, the inner diameter of the first arc 121 ranges from 3.7mm to 3.8mm, and the depth of the stator slot 12 ranges from 16.5mm to 16.7mm. Compared with the existing stator core with an outer diameter of 120mm, the depth of the stator slot, the depth of the end arc, and the inner diameter of the first arc at the rear end of the present technical solution are much larger than the dimensions recorded in the prior art. The depth of the stator slot in the existing stator core is about 11.5mm, and the width of the outer end structure of the stator slot is also less than 3.2mm.

[0028] The stator slots of the stator core of the present scheme have a significant change in size compared to the stator core of the prior art. The stator slots can accommodate a larger volume of stator windings. When accommodating stator coil windings with the same number of turns, the wire diameter of the stator coil of the present scheme can be larger. The thicker wire diameter means that the surface area of ​​each wire is larger, so the heat dissipation performance is better, which can reduce the heat accumulation caused by the current passing through the wire. At the same time, using a thicker wire diameter may help reduce electromagnetic interference because the magnetic field gradient generated by the thicker wire is smaller.

[0029] Continue to refer to Figure 1 Combination Figure 4 As shown, the rotor core 20 is matched and installed with the rotor installation cavity 11, and the outer circumferential direction of the stator core 10 is provided with a plurality of rotor slots 22, and the depth of the rotor slots 22 ranges from 10.3 to 10.4 mm, and the stator slots 12 are provided corresponding to the rotor slots 22. The stator slots are used to receive the rotor winding, and the depth of the rotor slots 22 in the prior art is 10 mm, and such stator slots can also receive more rotor winding copper wires.

[0030] The motor composed of a rotor core of the above-mentioned size and a stator core 10 is used in an electric water pump, so that the outer diameter of the stator core 10 of the same type as 120mm can achieve effective performance improvement, and the torque, temperature rise characteristics and efficiency of the motor have been significantly improved.

[0031] Reference Figure 1 As shown, in some embodiments, 24 stator slots 12 are evenly arranged in the inner circumferential direction of the stator core 10, and 18 rotor slots 22 are arranged in the outer circumferential direction of the stator core 10. The outer diameter of the stator core 10 is 120 mm.

[0032] Reference Figure 1As shown, the outer periphery of the stator core 10 is provided with a plurality of first bayonet holes matched with the housing, and the part of the water pump housing is fixedly mounted with the first bayonet holes through the clamping block. The middle of the rotor core 20 is provided with a shaft through hole, and the shaft through hole is also provided with a first notch, which can be matched with the mounting piece to fix the shaft.

[0033] The utility model also discloses an electric water pump, the motor component of which comprises the motor assembly mentioned above.

[0034] The above is only a preferred embodiment of the utility model. The utility model is not limited to the above implementation. As long as the technical effect of the utility model is achieved by the same means, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the scope of protection of the present disclosure. All should belong to the protection scope of the utility model. Within the protection scope of the utility model, its technical solution and / or implementation method can have various modifications and changes.

Claims

1. A motor assembly for an electric water pump, characterized in that: include: A stator core (10), wherein a rotor installation cavity (11) is provided in the middle of the stator core (10), a plurality of stator slots (12) are provided in the inner circumferential direction of the stator core (10), the inner diameter of the rotor installation cavity (11) is in a range of 60 mm to 60.1 mm, the outer end of the stator slot (12) is provided with a first circular arc (121) and the inner end is provided with a stator slot opening (122), the inner diameter of the first circular arc (121) is in a range of 3.7 mm to 3.8 mm, and the depth of the stator slot (12) is in a range of 16.5 mm to 16.7 mm; A rotor core (20) matched with the rotor mounting cavity (11), wherein a plurality of rotor slots (22) are provided in the circumferential direction of the outer side of the stator core (10), and the depth of the rotor slots (22) ranges from 10.3 to 10.4 mm; Wherein, the stator slot (12) is arranged corresponding to the rotor slot (22).

2. The motor assembly according to claim 1, characterized in that: 24 stator slots (12) are evenly arranged in the circumferential direction on the inner side of the stator core (10).

3. The motor assembly according to claim 1, characterized in that: 18 rotor slots (22) are arranged in the circumferential direction of the outer side of the stator core (10).

4. The motor assembly according to claim 1, characterized in that: The outer diameter of the stator core (10) is 120 mm.

5. The motor assembly according to claim 1, characterized in that: The outer periphery of the stator core (10) is provided with a plurality of first bayonet holes which are matched and mounted with the housing.

6. The motor assembly according to claim 1, characterized in that A rotating shaft through hole is provided in the middle of the rotor iron core (20), and a first through hole is also provided on the rotating shaft through hole.

7. An electric water pump, characterized in that: Comprising the motor assembly according to any one of claims 1 to 6.

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