Stator assembly and motor
A stator assembly and a motor are provided. The stator assembly has a stator core and a winding. The stator core has a stator yoke portion, at least one stator tooth, and at least one winding. The stator tooth is disposed along the axial direction of the stator yoke portion. The stator tooth is detachably connected to the stator yoke portion. The winding is wound on the stator tooth. The stator yoke portion is provided with a stator yoke groove and/or a stator projection adapted to the shape of the stator tooth. The stator tooth passes through the stator yoke groove and/or the stator projection to form the stator core.
1 . A stator assembly comprising:
a stator core comprising:
a stator yoke portion; and
at least one stator tooth comprising at least one stator tooth shoe and a stator tooth body, the stator tooth body comprising a first end and a second end,
wherein the stator tooth body extends in an axial direction of the stator yoke portion between the first end and the second end, and each of the at least one stator tooth is detachably connected to the stator yoke portion at the first end of the stator tooth body,
wherein the stator tooth shoe is detachably connected to the second end of the stator tooth body, and
wherein a positioning convex rib is disposed on an outer side of the at least one stator tooth between the stator tooth shoe and the stator yoke portion in the axial direction of the stator yoke portion when the first end of the stator tooth body is detachably connected to the stator yoke portion and is configured to inhibit an axial translation of the second end of the stator tooth body of the at least one stator tooth toward the stator yoke portion when the first end is detachably connected to the stator yoke portion, and
at least one winding wound on the at least one stator tooth,
wherein the stator yoke portion is provided with a stator yoke groove and/or a stator protrusion adapted to a shape of the first end of the stator tooth body, and the at least one stator tooth is configured to detachably connect to the stator yoke portion by an insertion of the first end of the stator tooth body into the stator yoke groove and/or the stator protrusion in the axial direction to form the stator core.
2 . The stator assembly according to claim 1 , wherein the stator yoke portion comprises:
a plurality of first magnetically conductive sheets stacked in a radial direction or an axial direction of the stator core.
3 . The stator assembly according to claim 2 , wherein:
the stator yoke portion comprises the plurality of first magnetically conductive sheets stacked in the radial direction or the axial direction of the stator core; and
the at least one stator tooth comprises a stator tooth body, the stator tooth body comprising a plurality of second magnetically conductive sheets stacked in the radial direction or a circumferential direction of the stator core.
4 . The stator assembly according to claim 3 , wherein the stacking direction of the second magnetically conductive sheets is perpendicular to the stacking direction of the first magnetically conductive sheets.
5 . The stator assembly according to claim 1 , wherein the stator yoke groove at least passes through one end surface of the stator yoke portion in the axial direction.
6 . The stator assembly according to claim 1 , wherein:
the stator yoke groove is spaced apart from an outer circumferential surface of the stator yoke portion in a radial direction of the stator core, and the stator yoke groove is spaced apart from an inner circumferential surface of the stator yoke portion in the radial direction; or
the stator yoke groove communicates with the outer circumferential surface and/or the inner circumferential surface of the stator yoke portion.
7 . The stator assembly according to claim 1 , wherein:
the stator protrusion is formed by outwardly extending an outer circumferential surface of the stator yoke portion in a radial direction of the stator core; and/or
the stator protrusion is formed by inwardly extending an inner circumferential surface of the stator yoke portion in the radial direction.
8 . The stator assembly according to claim 1 , wherein:
a number of the at least one stator tooth shoe is one, and the stator tooth shoe is disposed at one end of the stator tooth body; or
a number of the at least one stator tooth shoe is two, and two ends of the stator tooth body are provided with one of the stator tooth shoes respectively.
9 . The stator assembly according to claim 1 , further comprising:
a mating groove and a mating convex rib having mated shapes,
wherein one of the mating groove and the mating convex rib is disposed on the stator tooth body, and the other is disposed on the at least one stator tooth shoe, so as to realize connection between the at least one stator tooth shoe and the stator tooth body through the mating between the mating groove and the mating convex rib.
10 . The stator assembly according to claim 1 , wherein a number of the stator yoke groove and/or the stator protrusion is plural, and the plurality of stator yoke grooves and/or stator protrusions are uniformly arranged on the stator yoke portion around an axis of the stator core.
11 . The stator assembly according to claim 1 , wherein a cross-sectional area of the stator yoke portion has a shape of one of a circle, an ellipse and a regular polygon.
12 . The stator assembly according to claim 1 , wherein:
a material of the stator yoke portion comprises at least one of soft magnetic materials or solid steel, and
a material of the at least one stator tooth comprises at least one of soft magnetic materials or solid steel.
13 . A motor comprising:
at least one stator assembly according to claim 1 ; and
at least one rotor, each of the at least one rotor being arranged to correspond to the at least one stator assembly.
14 . The motor according to claim 13 , wherein:
a number of the at least one stator assembly is a first number, the at least one rotor comprises a plurality of rotors, a number of the plurality of rotors is a second number, the first number is smaller than the second number, and each of the at least one stator assembly is arranged between two adjacent rotors of the plurality of rotors; or
the at least one stator assembly comprises a plurality of stator assemblies, the number of the plurality of stator assemblies is a first number, the number of the at least one rotor is a second number, the first number is greater than the second number, and each of the at least one rotor is arranged between two adjacent stator assemblies of the plurality of stator assemblies.
15 . The motor according to claim 13 , wherein:
a number of the at least one stator assembly is at least two, and the at least two stator assemblies have the same number of stator teeth, or the at least two stator assemblies have the same number of phases; or
a number of the at least one stator assembly is at least two, and the at least two stator assemblies have different numbers of stator teeth, or the at least two stator assemblies have different numbers of phases.
16 . The motor according to claim 13 , wherein the at least one rotor comprises a plurality of rotors, and rotation shafts of the plurality of rotors are coaxial, parallel or perpendicular.