A method of winding a motor winding, a device, a stator and a motor
By alternating windings and flat-layer windings in the winding slots, the problem of the single number of parallel windings in flat wire hairpin motors is solved, realizing the compatibility of multiple parallel windings in the motor, and improving equipment utilization and production flexibility.
Patent Information
- Application Number
- CN202210886781.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-07-26
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2042-07-26
AI Technical Summary
The existing flat wire hairpin motors have a single number of parallel windings, which makes it difficult to perfectly match the power and torque requirements with the number of motor turns and wires, making it difficult to be compatible with the electric drive performance of different platforms.
By employing alternating windings in odd and even layers of the winding slot, combined with flat-layer winding technology, the motor achieves compatibility in the number of multi-layer parallel windings. Through winding design optimization, the equipment utilization rate and production flexibility are improved.
It enables motors to be compatible with different power and torque requirements, improves the investment utilization rate of flat wire production line equipment, and supports large-scale flexible production.
Smart Images
Figure CN115425787B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of electric vehicles, in particular to a motor winding method, device, stator and motor. BACKGROUND
[0002] With the development of electric vehicle technology, flat wire hairpin motors are widely used due to their high efficiency and high power density. At present, the flat wire hairpin motor is generally double-layered. Since the number of parallel windings of the hairpin motor is 1, and the number of parallel windings is single, the number of turns and the number of parallel windings of the motor cannot perfectly match the existing power torque demand of the motor. SUMMARY
[0003] The purpose of the embodiments of the present application is to provide a motor winding method, device, stator and motor, which can make the motor compatible with different power torque demands, improve the utilization rate of flat wire production line equipment investment, and provide support for large-scale flexible production.
[0004] In a first aspect, the embodiments of the present application provide a motor winding method, comprising:
[0005] According to the pole pitch of the motor, the winding is alternately wound at positions of an Nth layer and an N+1th layer of all winding slots, until the winding is wound at all even layers of the winding slots, wherein N is an odd number;
[0006] The winding is wound at odd layers of the winding slots which have not been wound with the winding.
[0007] In the above implementation process, the motor can realize different numbers of parallel windings, thereby realizing different numbers of turns per phase in series of the motor. Therefore, the motor can be compatible with different power torque demands, cover different platform electric drive performance requirements, improve the utilization rate of flat wire production line equipment investment, and provide support for large-scale flexible production.
[0008] Further, the step of winding the winding at odd layers of the winding slots which have not been wound with the winding comprises:
[0009] According to the pole pitch of the motor, the winding is alternately wound at positions of an Nth layer and an N+1th layer of all winding slots, until the winding is wound at all even layers of the winding slots, wherein N is an odd number;
[0010] In the above implementation process, the odd layer jumper twist head is consistent, which is convenient for production.
[0011] Further, the outgoing line end of the winding is at the hairpin end.
[0012] In the above implementation process, the outgoing line is more convenient during winding, which is convenient for production.
[0013] Further, the outgoing line of the winding is a single I-shaped hairpin, which is different from the U-shaped hairpin formed by the hairpin, and can be beneficial to the outgoing line of the motor.
[0014] In the implementation process, the outgoing wire of the winding is single, does not form a hairpin, and through different busbar linking schemes, the indirect wire between the parallel lines can be conveniently connected, such as 5 layers 2 branches and 5 layers 1 branch.
[0015] Further, the motor is a 5-layer 48-slot motor.
[0016] In a second aspect, an embodiment of the present application provides a motor winding winding device, comprising:
[0017] The first winding module is configured to alternately wind the winding at positions of Nth layer and N+1th layer of all winding slots according to a pole pitch of the motor, until the winding is wound at all even layers of the winding slots, wherein N is an odd number.
[0018] The second winding module is configured to wind the winding at odd layers of the winding slots which have not wound the winding.
[0019] In the implementation process, the motor can be compatible with different power torque requirements, improve the utilization rate of flat wire production line equipment investment, and provide support for large-scale flexible production.
[0020] Further, the second winding module is further configured to wind the winding at odd layers of the winding slots which have not wound the winding according to the pole pitch of the motor.
[0021] In the implementation process, the odd layer jumper wire twist head is consistent, which is convenient for production.
[0022] Further, the first winding module and the second winding module are further configured to make the outgoing wire end of the winding at the hairpin end.
[0023] In the implementation process, the outgoing wire is more convenient during winding, which is convenient for production.
[0024] Other features and advantages of the present application will be described in the following description, or can be known or determined from the description without doubt, or can be known from the implementation of the above-mentioned technology of the present application.
[0025] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are specifically described with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS
[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0027] Fig. 1(a) is a partial winding circuit diagram of a single-phase winding of an electric machine provided by the embodiments of the present application;
[0028] Fig. 1(b) is a partial winding circuit diagram of a single-phase winding of an electric machine provided by the embodiments of the present application;
[0029] Fig. 1(c) is a partial winding circuit diagram of a single-phase winding of an electric machine provided by the embodiments of the present application;
[0030] Fig. 1(d) is a partial winding circuit diagram of a single-phase winding of an electric machine provided by the embodiments of the present application;
[0031] Fig. 2(a) is a partial winding circuit diagram of a three-phase winding of an electric machine provided by the embodiments of the present application;
[0032] Fig. 2(b) is a partial winding circuit diagram of a three-phase winding of an electric machine provided by the embodiments of the present application;
[0033] Fig. 2(c) is a partial winding circuit diagram of a three-phase winding of an electric machine provided by the embodiments of the present application;
[0034] Fig. 2(d) is a partial winding circuit diagram of a three-phase winding of an electric machine provided by the embodiments of the present application;
[0035] Figure 3 Fig. 3 is a structural schematic diagram of a winding device for an electric machine winding provided by the embodiments of the present application. DETAILED DESCRIPTION
[0036] The technical solutions of the embodiments of the present application will be described in detail below with reference to the drawings in the embodiments of the present application.
[0037] It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. Meanwhile, in the description of the present application, the terms "first", "second", etc. are only used for distinguishing description, and cannot be understood as indicating or implying relative importance.
[0038] Embodiment 1
[0039] The embodiments of the present application provide a winding method for an electric machine winding, in particular, the electric machine is a hairpin electric machine, which comprises:
[0040] According to the pole pitch of the motor, the winding is alternately wound at positions of Nth layer and N+1th layer of all winding slots until the winding is wound at all even layers of the winding slots, wherein N is an odd number;
[0041] The winding is wound at odd layers of the winding slots which have not been wound with the winding.
[0042] Exemplarily, referring to FIG. 1(a), FIG. 1(b), FIG. 1(c), FIG. 1(d), FIG. 2(a), FIG. 2(b), FIG. 2(c), FIG. 2(d), Figure 3 Taking a 5-layer 48-slot motor with a pole pitch of 6 as an example, in the 1st slot and the 48th slot, the flat copper wire winding jumps from N 1,1 to N 7,2 , then jumps from N 7,2 to N 12,1 , jumps from N 12,1 to N 18,2 , jumps from N 18,2 to N 24,1 , jumps from N 24,1 to N 30,2 , jumps from N 30,2 to N 37,1 , jumps from N 37,1 to N 43,2 , and finally jumps from the 1st layer and the 2nd layer to the 3rd layer and the 4th layer, jumps from N 43,2 to N 1,3 , jumps from N 1,3 to N 7,4 , and so on until the entire even layer is jumped, and finally the odd layer is jumped flat.
[0043] The motor is divided into three phases U phase, V phase and W phase, and each phase has two branches U1 and U2,
[0044] U1+ represents the current flowing into the first branch of the U phase, and U1- represents the current flowing out of the first branch of the U phase.
[0045] It can be understood that the above method is applicable to the winding method of the winding of each phase of the three-phase motor.
[0046] It should be noted that the above embodiment is only one specific winding method. Under the concept of the present application, by changing the winding sequence of the number of layers, it still belongs to the protection scope of the present application.
[0047] In the above implementation process, the motor can be compatible with different power torque requirements, improve the utilization rate of flat wire production line equipment investment, and provide support for large-scale flexible production.
[0048] In a possible implementation, the step of winding the winding at odd layers of the winding slots which have not been wound with the winding includes:
[0049] According to the pole pitch of the motor, the odd-numbered layers of the winding are wound in the winding slots which have not yet been wound with the winding.
[0050] Exemplarily, referring to FIG. 1(a), FIG. 1(b), FIG. 1(c), FIG. 1(d), FIG. 2(a), FIG. 2(b), FIG. 2(c), FIG. 2(d), Figure 3 Taking a 5-layer 48-slot motor with a pole pitch of 6 as an example, in the No. 1 slot and the No. 48 slot, the flat copper wire winding jumps from N 1,1 to N 7,2 , then jumps from N 7,2 to N 12,1 , jumps from N 12,1 to N 18,2 , jumps from N 18,2 to N 24,1 , jumps from N 24,1 to N 30,2 , jumps from N 30,2 to N 37,1 , jumps from N 37,1 to N 43,2 , and finally jumps from the first layer and the second layer to the third layer and the fourth layer, jumps from N 43,2 to N 1,3 , jumps from N 1,3 to N 7,4 ... and so on until the entire even-numbered layers are jumped, and finally the odd-numbered layers are jumped in the flat layer. That is, the winding does not jump from the winding slot of the fifth layer to other layers and then jump back to the fifth layer during the winding process in the fifth layer.
[0051] In the above implementation process, the odd-numbered layer jump wire twists are consistent, which is convenient for production.
[0052] In a possible implementation, the outgoing wire end of the winding is at the card end.
[0053] In the above implementation process, during the winding process of the winding, the winding resistor enters the winding slot from one end of the motor and exits the winding slot from the other end of the motor, which can make the outgoing wire of the winding more convenient during the winding process, and is convenient for production.
[0054] In a possible implementation, the outgoing wire of the winding is single-rooted.
[0055] In the above implementation process, the outgoing wire of the winding is single-rooted and does not form a card shape, which is convenient for indirect wiring between parallel circuits.
[0056] In the above implementation process, the motor is a 5-layer 48-slot motor.
[0057] Embodiment 2
[0058] Referring to Figure 3The motor winding device provided by the embodiment of the application comprises:
[0059] The first winding module 1 is used for winding the winding alternately at positions of Nth layer and N+1th layer of all winding slots according to the pole pitch of the motor until the winding is wound at all even layers of the winding slots, wherein N is an odd number.
[0060] The second winding module 2 is used for winding the winding at odd layers of the winding slots which have not wound the winding.
[0061] In the implementation process, the motor can be compatible with different power torque requirements, improve the utilization rate of flat wire production line equipment investment, and provide support for large-scale flexible production.
[0062] In a possible implementation, the first winding module 1 and the second winding module 2 are also used for winding the winding at odd layers of the winding slots which have not wound the winding according to the pole pitch of the motor during the winding process.
[0063] In a possible implementation, the first winding module 1 and the second winding module 2 are also used for making the outgoing end of the winding be a hairpin end during the winding process of the winding.
[0064] In a possible implementation, the first winding module 1 and the second winding module 2 are also used for making the outgoing wire of the winding be single during the winding process of the winding.
[0065] In a possible implementation, the motor is a 5-layer 48-slot motor.
[0066] Embodiment 3
[0067] The application also provides a stator, wherein winding slots are uniformly arranged on a stator core, and a winding is wound on the winding slots by using the winding method of the motor winding of the embodiment 1.
[0068] Embodiment 4
[0069] Referring to Figure 3 The embodiment of the application also provides a motor comprising the stator of the embodiment 3.
[0070] The above description is only a specific implementation of the application, but the protection scope of the application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the application, which should be covered in the protection scope of the application. Therefore, the protection scope of the application should be limited by the protection scope of the claims.
[0071] It is to be noted that, as used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Thus, for example, reference to "a component" can include a combination of two or more components. Additionally, the terms "comprise," "comprises," and "comprising," or any variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is not necessarily limited to those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, unless otherwise indicated herein, the terms "first," "second," "third," etc., are used herein merely as labels, and are not intended to impose ordinal import.
Claims
1. A method for winding motor windings, characterized in that, The winding has an odd number of layers; the method includes: According to the pole pitch of the motor, the winding is alternately wound around the Nth and N+1th layers of all winding slots until the winding is wound around all even-numbered layers of the winding slots, where N is an odd number; The winding is wound in the winding slot in an odd number of layers before the winding is wound; The step of winding the winding in the winding slot in an odd number of layers that have not yet been wound includes: Based on the pole pitch of the motor, the winding is wound in a flat layer in the winding slot, in the odd number of layers before the winding is wound.
2. The motor winding method according to claim 1, characterized in that, The lead-out end of the winding is at the card-off end.
3. The motor winding method according to claim 1, characterized in that, The lead wire of the winding is a single wire.
4. The motor winding method according to claim 1, characterized in that, The motor is a 5-layer, 48-slot motor.
5. A motor winding device, characterized in that, include: The first winding module is used to alternately wind the winding at the Nth and N+1th layers of all winding slots according to the pole pitch of the motor, until the winding is wound in all even-numbered layers of the winding slots, where N is an odd number; The second winding module is used to wind the winding in the winding slots in an odd number of layers that have not yet been wound with the winding; The second winding module is also used to wind the winding in flat layers in the winding slots of the odd number of layers of the winding that have not yet been wound, according to the pole pitch of the motor.
6. The motor winding device according to claim 5, characterized in that, The first winding module and the second winding module are also used to make the lead-out end of the winding at the hairpin end.
7. A stator, characterized in that, A stator core, on which winding slots are uniformly arranged; a winding; the winding is wound on the winding slots using the winding method of motor windings according to any one of claims 1-4.
8. An electric motor, characterized in that, Includes the stator as described in claim 7.
Citation Information
Patent Citations
Stator flat wire winding device and winding method thereof
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