Motor stator winding structure and motor
By winding a three-phase coil winding in the motor stator with an internal cable, the winding complexity problem caused by the span winding connection in the prior art is solved, and a simpler and more efficient winding process is achieved.
Patent Information
- Application Number
- CN202421228436.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The star-shaped connection structure and triangular connection structure of existing motor stators are prone to cross-winding connections during the winding process, which increases the length of the winding and the difficulty of making, and is complex in operation.
The motor stator winding structure is adopted, which includes an internal connection cable winding around the circumference of the motor stator, connecting the three-phase coil windings in series and forming a loop to avoid cross-winding connections.
The end winding length is significantly reduced, the winding process is simplified, the operation difficulty is reduced, and the motor efficiency and reliability is improved.
Smart Images
Figure CN222508938U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motor devices, in particular to a motor stator winding structure and a motor. Background Art
[0002] When wiring the existing motor stators, a star connection structure or a triangle connection structure is often used. The triangle connection is to connect the U-phase end of the three-phase power supply or load to the front end of the V-phase, the V-phase end is connected to the front end of the W-phase, and the W-phase end is connected to the front end of the U-phase to form a closed triangle; the star connection is to connect the ends of the U-phase, V-phase, and W-phase of the three-phase power supply or load together to form a common point, and then lead out three end lines from the front end of each phase.
[0003] However, both the star connection structure and the triangle connection structure will produce cross-winding connection, which increases the length of the end winding and the difficulty of the manufacturing process. Utility Model Content
[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a motor stator winding structure and a motor, so as to solve the problem that in the prior art, whether it is a star connection structure or a triangle connection structure, cross-terminal winding often occurs during the actual winding process, and such a winding method is complicated and cumbersome, and has high operating requirements for the winding staff.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] An embodiment of the utility model provides a motor stator winding structure, which includes: a motor stator, the motor stator is provided with a coil winding, the coil winding is divided into a first-phase coil winding, a second-phase coil winding and a third-phase coil winding, the first-phase coil winding, the second-phase coil winding and the third-phase coil winding are arranged in a circumferential direction in sequence in at least two groups, the first-phase coil winding is provided with a first-phase connection terminal, the second-phase coil winding is provided with a second-phase connection terminal, and the third-phase coil winding is provided with a third-phase connection terminal;
[0007] It also includes an internal cable, which is circulated along the first phase terminal, the first phase coil winding, the second phase terminal, the second phase coil winding, the third phase terminal, and the third phase coil winding in sequence, so that the internal cable is wound around the stator of the motor in one circle, and the first phase coil winding, the second phase coil winding, and the third phase coil winding are connected in series to form a loop.
[0008] As a preferred technical solution of the utility model, it also includes a first external cable, a second external cable and a third external cable, the first external cable is connected to the first phase terminal, so that the first phase coil windings are connected in parallel with each other; the second external cable is connected to the second phase terminal, so that the second phase coil windings are connected in parallel with each other; the third external cable is connected to the third phase terminal, so that the third phase coil windings are connected in parallel with each other.
[0009] As a preferred technical solution of the present utility model, the first phase coil winding, the second phase coil winding, and the third phase coil winding are U phase, V phase, and W phase respectively.
[0010] As a preferred technical solution of the utility model, the coil winding includes a first coil winding, a second coil winding, a third coil winding, a fourth coil winding, a fifth coil winding, and a sixth coil winding arranged in sequence along the circumferential direction, the first coil winding and the fourth coil winding are first-phase coil windings, the second coil winding and the fifth coil winding are second-phase coil windings, and the third coil winding and the sixth coil winding are third-phase coil windings.
[0011] As a preferred technical solution of the utility model, the internal cable is forwardly wound around the first coil winding, reversely wound around the second coil winding, forwardly wound around the third coil winding, reversely wound around the fourth coil winding, forwardly wound around the fifth coil winding, and reversely wound around the sixth coil winding.
[0012] As a preferred technical solution of the present utility model, the winding directions of the internal cables on adjacent coil windings are opposite.
[0013] An embodiment of the utility model further provides a motor, comprising the motor stator winding structure as described above, and also comprising a motor rotor, wherein the motor rotor is disposed through the motor stator.
[0014] Compared with the prior art, the motor stator winding structure of the utility model connects the three-phase coil windings in series and forms a loop by winding an internal cable around the circumference of the motor stator, thus avoiding the complicated cross-winding connection in the traditional star connection and triangle connection, and significantly reducing the length of the end winding.
[0015] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 This is a three-dimensional view of a motor stator in a motor stator winding structure of the utility model;
[0018] Figure 2 It is a top view of a motor stator in a motor stator winding structure of the utility model;
[0019] Figure 3 The utility model is a schematic diagram of the coil winding connection structure of a motor stator winding structure.
[0020] Description of the symbols in the figure:
[0021] 10. Motor stator winding structure; 20. Motor stator; 201. First coil winding; 202. Second coil winding; 203. Third coil winding; 204. Fourth coil winding; 205. Fifth coil winding; 206. Sixth coil winding; 21. First phase coil winding; 211. First phase terminal; 22. Second phase coil winding; 221. Second phase terminal; 23. Third phase coil winding; 231. Third phase terminal; 30. Internal cable; 40. External cable. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and specific implementation methods.
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0024] 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 indicate orientations or positional relationships based on the orientations or positional relationships described 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 referred device or element 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.
[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0026] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0027] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0028] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means 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 utility model. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.
[0029] See also Figure 1 and Figure 3 The utility model embodiment discloses a motor stator winding structure 10, which includes: a motor stator 20, a coil winding is provided on the motor stator 20, and the coil winding is divided into a first-phase coil winding 21, a second-phase coil winding 22 and a third-phase coil winding 23, and the first-phase coil winding 21, the second-phase coil winding 22 and the third-phase coil winding 23 are arranged in a circumferential direction in sequence and have at least two groups, and the first-phase coil winding 21 is provided with a first-phase connection terminal 211, and the second-phase coil winding 22 is provided with a second-phase connection terminal 221, a third-phase terminal 231 is provided on the third-phase coil winding 23; it also includes an internal cable 30, which is circulated along the first phase terminal 211, the first phase coil winding 21, the second phase terminal 221, the second phase coil winding 22, the third phase terminal 231, and the third phase coil winding 23 in sequence, so that the internal cable 30 is wound around the motor stator 20 in one circle, and the first phase coil winding 21, the second phase coil winding 22, and the third phase coil winding 23 are connected in series to form a loop.
[0030] It should be noted that the coil winding in this embodiment can be a coil winding wound on the stator core, or a hollow coil winding not wound on the stator core. The setting of the coil winding belongs to the prior art and will not be elaborated here.
[0031] Furthermore, the motor stator winding structure 10 of the present embodiment also includes a first external cable 40, a second external cable 40 and a third external cable 40, the first external cable 40 is connected to the first phase terminal 211, so that the first phase coil windings 21 are connected in parallel with each other; the second external cable 40 is connected to the second phase terminal 221, so that the second phase coil windings 22 are connected in parallel with each other; the third external cable 40 is connected to the third phase terminal 231, so that the third phase coil windings 23 are connected in parallel with each other.
[0032] In this embodiment, the first external cable 40 is connected to the first phase terminal 211, and multiple coil windings belonging to the first phase are connected in parallel; the second external cable 40 is connected to the second phase terminal 221, and multiple coil windings belonging to the second phase are connected in parallel; the third external cable 40 is connected to the third phase terminal 231, and multiple coil windings belonging to the third phase are connected in parallel. This parallel connection method not only increases the current capacity of the motor stator 20, but also optimizes the distribution of current, reduces the thermal effect and mechanical stress caused by uneven current distribution, and improves the efficiency and reliability of the motor. In addition, by connecting multiple coil windings in parallel, the risk of overall motor failure due to a single coil winding failure can also be reduced, thereby enhancing the fault tolerance of the motor.
[0033] Furthermore, the internal cables 30 on adjacent coil windings are wound in opposite directions. This alternating forward and reverse winding method helps to balance the electromagnetic field distribution between the coil windings of each phase, reduce electromagnetic noise and vibration, and at the same time, this winding method can also offset the electromagnetic interference between adjacent coil windings to a certain extent, thereby improving the working efficiency and stability of the motor.
[0034] Specifically, the first phase coil winding 21 , the second phase coil winding 22 , and the third phase coil winding 23 are U phase, V phase, and W phase, respectively.
[0035] In one embodiment, the coil windings include a first coil winding 201, a second coil winding 202, a third coil winding 203, a fourth coil winding 204, a fifth coil winding 205, and a sixth coil winding 206 arranged in sequence along the circumferential direction. The first coil winding 201 and the fourth coil winding 204 are the first phase coil winding 21, the second coil winding 202 and the fifth coil winding 205 are the second phase coil winding 22, the third coil winding 203 and the sixth coil winding 206 are the third phase coil winding 23. Specifically, the first coil winding 201 and the fourth coil winding 204 are U phases, the second coil winding 202 and the fifth coil winding 205 are V phases, and the third coil winding 203 and the sixth coil winding 206 are W phases.
[0036] Furthermore, the internal cable 30 is forwardly wound around the first coil winding 201 , reversely wound around the second coil winding 202 , forwardly wound around the third coil winding 203 , reversely wound around the fourth coil winding 204 , forwardly wound around the fifth coil winding 205 , and reversely wound around the sixth coil winding 206 .
[0037] An embodiment of the utility model further provides a motor, comprising the motor stator winding structure 10 as described above, and also comprising a motor rotor, wherein the motor rotor is disposed through the motor stator 20 .
[0038] Compared with the prior art, the motor stator winding structure of the utility model connects the three-phase coil windings in series and forms a loop by winding an internal cable around the circumference of the motor stator, thus avoiding the complicated cross-winding connection in the traditional star connection and triangle connection, and significantly reducing the length of the end winding.
[0039] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A motor stator winding structure, characterized in that: include: A motor stator, wherein the motor stator is provided with coil windings, the coil windings are divided into a first-phase coil winding, a second-phase coil winding and a third-phase coil winding, the first-phase coil winding, the second-phase coil winding and the third-phase coil winding are arranged in a circumferential direction in sequence in at least two groups, the first-phase coil winding is provided with a first-phase connection terminal, the second-phase coil winding is provided with a second-phase connection terminal, and the third-phase coil winding is provided with a third-phase connection terminal; It also includes an internal cable, which is circulated along the first phase terminal, the first phase coil winding, the second phase terminal, the second phase coil winding, the third phase terminal, and the third phase coil winding in sequence, so that the internal cable is wound around the stator of the motor in one circle, and the first phase coil winding, the second phase coil winding, and the third phase coil winding are connected in series to form a loop.
2. A motor stator winding structure according to claim 1, characterized in that: It also includes a first external cable, a second external cable and a third external cable, the first external cable is connected to the first phase terminal so that the first phase coil windings are connected in parallel with each other; the second external cable is connected to the second phase terminal so that the second phase coil windings are connected in parallel with each other; the third external cable is connected to the third phase terminal so that the third phase coil windings are connected in parallel with each other.
3. The motor stator winding structure according to claim 1, characterized in that: The first phase coil winding, the second phase coil winding, and the third phase coil winding are U phase, V phase, and W phase respectively.
4. The motor stator winding structure according to claim 1, characterized in that: The coil windings include a first coil winding, a second coil winding, a third coil winding, a fourth coil winding, a fifth coil winding, and a sixth coil winding arranged in sequence along the circumferential direction, the first coil winding and the fourth coil winding are first-phase coil windings, the second coil winding and the fifth coil winding are second-phase coil windings, and the third coil winding and the sixth coil winding are third-phase coil windings.
5. A motor stator winding structure according to claim 4, characterized in that: The internal cable is wound around the first coil winding in a forward direction, and is wound around the second coil winding in a reverse direction. The internal cable is wound around the third coil winding in a forward direction, and is wound around the fourth coil winding in a reverse direction. The internal cable is wound around the fifth coil winding in a forward direction, and is wound around the sixth coil winding in a reverse direction.
6. The motor stator winding structure according to claim 1, characterized in that: The inner cables on adjacent coil windings are wound in opposite directions.
7. A motor, characterized in that: It comprises the motor stator winding structure according to any one of claims 1 to 6, and also comprises a motor rotor, wherein the motor rotor is inserted into the motor stator.