Double-layer concentrated winding motor

Abstract

An embodiment of the utility model discloses a double-layer concentrated winding motor, which comprises a stator yoke, stator teeth and an insulation framework, the stator yoke is sleeved outside the stator teeth, the stator yoke and the stator teeth form a stator core of the motor, a winding A and a winding B are arranged between adjacent stator teeth, the insulation framework comprises slot insulation, and the slot insulation is arranged between the stator teeth. And the winding A and the winding B are different in number of turns and are respectively wound on the slot insulation. According to the double-layer concentrated winding motor, the coils with asymmetrical winding displacement are wound on the adjacent stator teeth, so that the problem of interference of the adjacent coils caused by overhigh slot fullness rate is avoided, the coils can be wound by using thicker copper wires, the space of the stator slots can be fully utilized as much as possible, the slot fullness rate of the motor is improved, the stator armature resistance is reduced, and the service life of the motor is prolonged. The effects of reducing motor copper consumption and improving efficiency are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a double-layer concentrated winding motor. Background Art

[0002] A motor is an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction. It is represented in circuits by the letter M (D in older standards). Its primary function is to generate driving torque, serving as a power source for electrical appliances and various machines. A generator is represented in circuits by the letter G. Its primary function is to convert mechanical energy into electrical energy. Currently, the most common method is to use heat energy, water energy, or other energy to propel the generator rotor to generate electricity.

[0003] At present, the winding method of the motor stator with double-layer concentrated winding in China is to wind the winding with symmetrical wire arrangement on each stator tooth. In order to reduce the copper loss of the double-layer concentrated winding motor and thus improve its efficiency, it is necessary to consider both production efficiency and improving the motor slot fill rate.

[0004] Therefore, the utility model proposes a double-layer concentrated winding motor. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the present invention is how to reduce the copper loss of the motor while improving the motor slot fill rate.

[0006] In order to solve the above problems, an embodiment of the present invention provides a double-layer concentrated winding motor, including a stator yoke, stator teeth, and an insulating frame. The stator yoke is sleeved on the outside of the stator teeth. The stator yoke and the stator teeth constitute the stator core of the motor. Winding A and winding B are arranged between adjacent stator teeth. The insulating frame includes slot insulation. The number of turns of winding A and winding B is inconsistent and they are respectively wound on the slot insulation.

[0007] Optionally, the stator core is formed by axially stacking a plurality of electrical steel sheets.

[0008] Optionally, the slot insulation sleeve is provided on the stator teeth.

[0009] Optionally, the insulating frame further includes an annular block for placing the winding end, and the annular block is arranged at the edge of the inner ring of the stator teeth.

[0010] Optionally, the insulating frame also includes a fixing block and a protrusion, the fixing block is arranged at the top outer edge position of the stator yoke, and the protrusion is arranged at the top middle position of the fixing block, and the fixing block, protrusion, slot insulation and annular block are an integrally formed structure.

[0011] Optionally, a plurality of fixing blocks are provided, and the fixing blocks are evenly and annularly fixed on the stator yoke.

[0012] Optionally, holes are respectively provided on both sides of the top of the fixing block, and a plurality of slots are provided on the inner side of the fixing block.

[0013] Optionally, the number of the insulating skeletons is the same as the number of stator teeth.

[0014] Optionally, an annular plate is fixedly provided on the inner edge of the bottom of the stator tooth.

[0015] Compared with the prior art, the technical effects achieved by the embodiments of the present invention include:

[0016] The utility model avoids the problem of interference between adjacent coils caused by excessively high slot fill rate by winding coils with asymmetrical wire arrangements on adjacent stator teeth, thereby allowing the use of thicker copper wires to wind the coils, making full use of the stator slot space as much as possible, improving the motor slot fill rate, reducing the stator armature resistance, and achieving the effect of reducing motor copper loss and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings herein are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention, and together with the description, serve to explain the principles of the present invention.

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0020] Figure 1 It is a three-dimensional diagram from one viewing angle of the present invention.

[0021] Figure 2 It is a three-dimensional diagram from another perspective of the present invention.

[0022] Figure 3 It is a top view of the present utility model.

[0023] Figure 4 It is a bottom view of the present utility model.

[0024] Figure 5 It is the main view of the present utility model.

[0025] Figure 6This is an enlarged view of point A.

[0026] Figure 7 This is an enlarged view of point B.

[0027] Reference numerals

[0028] 1. Stator yoke; 2. Stator teeth; 3. Slot insulation; 4. Winding A; 5. Winding B; 6. Slot; 7. Ring plate; 8. Ring block; 9. Bump; 10. Hole; 11. Fixing block. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Similar component numbers in the drawings represent similar components. Obviously, the embodiments described below are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0030] It will be understood that when used in this specification and the appended claims, the terms “comprises” and “comprising” indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0031] It should also be understood that the terms used in this specification of the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present invention. As used in the specification of the embodiments of the present invention and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0032] See also Figure 1-7 The present invention provides a double-layer concentrated winding motor, comprising a stator yoke 1, stator teeth 2, and an insulating frame. The stator yoke 1 is sleeved around the stator teeth 2. The stator yoke 1 and the stator teeth 2 form the stator core of the motor. Windings A4 and B5 are disposed between adjacent stator teeth 2. The insulating frame includes slot insulation 3, which is sleeved around the stator teeth 2. Windings A4 and B5 have different numbers of turns and are wound around the slot insulation 3, respectively. The stator yoke 1 is arranged in conjunction with the stator teeth 2. The insulating frame also includes an annular block 8 for placing the winding ends. The annular block 8 is disposed at the inner edge of the stator teeth 2. The stator core is formed by axially stacking a plurality of electrical steel sheets, including but not limited to silicon steel sheets.

[0033] Please continue reading Figure 1-6The insulating skeleton also includes a fixing block 11 and a protrusion 9. The fixing block 11 is arranged at the top outer edge position of the stator yoke 1, and the protrusion 9 is arranged at the top middle position of the fixing block 11. There are several fixing blocks 11, and the fixing blocks 11 are evenly fixed on the stator yoke 1 in a ring shape. The fixing block 11, the protrusion 9, the slot insulation 3 and the annular block 8 are an integrally formed structure and constitute an insulating skeleton.

[0034] Please continue reading Figure 1-6 Specifically, holes 10 are provided on both sides of the top of the fixing block 11, a plurality of slots 12 are provided on the inner side of the fixing block 11, and an annular plate 7 is fixedly provided on the inner edge of the bottom of the stator tooth 2.

[0035] Preferably, the number of the insulating skeletons of the present invention is the same as the number of the stator teeth 2 .

[0036] Please continue reading Figure 1-7 The installation steps of the present invention are as follows: winding A4 is wound on the slot insulation with 136 turns, winding B5 is wound on the slot insulation 3 with 142 turns, the slot insulation 3 with windings A4 and B5 is installed on two adjacent stator teeth 2, for a total of 12 teeth in the circumferential direction, and finally the stator yoke 1 is sleeved on the stator teeth 2. By winding coils with asymmetric wire arrangement on adjacent stator teeth 2, the problem of interference between adjacent coils caused by excessive slot fill rate is avoided, so that thicker copper wire can be used to wind the coils, making full use of the stator slot space as much as possible, improving the motor slot fill rate, reducing the stator armature resistance, and achieving the effect of reducing motor copper loss and improving efficiency.

[0037] Compared with the prior art, the technical effects achieved by the embodiments of the present invention include:

[0038] The utility model avoids the problem of interference between adjacent coils caused by excessively high slot fill rate by winding coils with asymmetrical wire arrangements on adjacent stator teeth, thereby allowing the use of thicker copper wires to wind the coils, making full use of the stator slot space as much as possible, improving the motor slot fill rate, reducing the stator armature resistance, and achieving the effect of reducing motor copper loss and improving efficiency.

[0039] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0042] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0043] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0044] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0045] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, as long as these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

[0046] The above description is a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A double-layer concentrated winding motor, characterized in that: It includes a stator yoke, stator teeth, and an insulating frame. The stator yoke is sleeved on the outside of the stator teeth. The stator yoke and the stator teeth constitute the stator core of the motor. Winding A and winding B are arranged between adjacent stator teeth. The insulating frame includes slot insulation. The number of turns of winding A and winding B is inconsistent and they are respectively wound on the slot insulation.

2. The double-layer concentrated winding motor according to claim 1, characterized in that: The stator core is formed by axially stacking a number of electrical steel sheets.

3. The double-layer concentrated winding motor according to claim 1, characterized in that: The slot insulating sleeve is arranged on the stator teeth.

4. The double-layer concentrated winding motor according to claim 3, characterized in that: The insulating frame further comprises an annular block for placing the winding end, and the annular block is arranged at the edge of the inner ring of the stator teeth.

5. The double-layer concentrated winding motor according to claim 4, characterized in that: The insulating frame also includes a fixing block and a protrusion. The fixing block is arranged at the top outer edge of the stator yoke, and the protrusion is arranged at the top middle position of the fixing block. The fixing block, protrusion, slot insulation and annular block are an integrally formed structure.

6. The double-layer concentrated winding motor according to claim 5, characterized in that: There are a plurality of fixing blocks, and the fixing blocks are evenly and annularly fixed on the stator yoke.

7. The double-layer concentrated winding motor according to claim 6, characterized in that: Holes are respectively provided on both sides of the top of the fixing block, and a plurality of slots are provided on the inner side of the fixing block.

8. The double-layer concentrated winding motor according to claim 7, characterized in that: The number of the insulating skeletons is the same as the number of the stator teeth.

9. The double-layer concentrated winding motor according to claim 8, characterized in that: An annular plate is fixedly provided on the inner edge of the bottom of the stator tooth.

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