CN117748767A - Motor stator design method - Google Patents
Motor stator design method Download PDFInfo
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- CN117748767A CN117748767A CN202311761606.2A CN202311761606A CN117748767A CN 117748767 A CN117748767 A CN 117748767A CN 202311761606 A CN202311761606 A CN 202311761606A CN 117748767 A CN117748767 A CN 117748767A
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- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000004804 winding Methods 0.000 claims abstract description 77
- 239000008358 core component Substances 0.000 claims abstract description 68
- 238000005452 bending Methods 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000007667 floating Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000000306 component Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005426 magnetic field effect Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
The invention discloses a motor stator design method, a stator designed according to the method comprises N groups of stator core components, wherein the N groups of stator core components are wound in series and assembled into a closed structure without interval, stator grooves with interval are formed in the closed structure, and each group of stator core components comprises a stator module, a winding groove sleeved on the stator module, an outer winding coil wound on the winding groove, a wiring bracket attached to an enameled wire on the outer winding coil and a PIN needle arranged on the wiring bracket; the stator design method solves the problems of difficult quality guarantee, low service life, easy motor burning and the like of motor production, and provides a stable and reliable stator technology for manufacturing high-speed, mute and high-power motors.
Description
Technical Field
The invention relates to the technical field of motor stators, in particular to a motor stator design method.
Background
The motor comprises a motor and a generator, is equipment for realizing the mutual conversion of electric energy and mechanical energy, and has been widely used in various industries, wherein the motor mainly comprises a stator and a rotor, and the traditional cylindrical iron core stator has the defects of low slot filling rate, thin wire diameter of an enameled wire, too loose connecting wire, poor consistency of stator characteristics and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a motor stator design method, which solves the defects of low full rate of slots, thin wire diameter of enameled wires, too loose connecting wires, poor consistency of stator characteristics and the like of the traditional stator one by redeveluting the structures of all parts of a stator, solves the problems of difficult production quality guarantee, low service life, easy motor burning and the like of a motor, and provides a stable and reliable stator technology for manufacturing a high-speed, mute and high-power motor.
The aim of the invention is achieved by the following technical scheme:
a method of designing a stator of an electric machine, comprising:
designing a stator, and winding and assembling N groups of stator core components in a non-interval manner to form a closed structure;
each group of stator core components comprises a stator module, a winding groove sleeved on the stator module, an outer winding type coil wound on the winding groove, a wiring support and a PIN needle arranged on the wiring support, and the PIN needle is used as a minimum working module of the stator;
the wiring bracket is attached with the starting point and the end point of the enameled wire on the outer winding type coil and is used for fixing the position of the connecting wire of the outer winding type coil;
a through stator slot without space is formed in the closed structure for improving the quality and slot filling rate of the outer winding type coil.
Further, the method comprises the steps of:
the closed structure comprises a cylindrical structure and a U-shaped structure, the closed structure is provided with an inner annular wall and an outer annular wall, the outer winding coil is further wrapped in the closed structure, the outer winding coil is isolated from being contacted with other motor components, and structural vibration of each part of the motor can not cause the outer winding coil to collide and be damaged when the motor runs at high speed, and meanwhile short circuits are avoided.
Further, the method comprises the steps of:
the long ends of the stator slots are connected in a surrounding mode to form an outer annular wall, the short ends of the stator slots are connected in a surrounding mode to form an inner annular wall, the long ends and the short ends of the stator slots protrude outwards in the radial direction to form an inner space with large radial space, wiring of the outer winding type coils is facilitated, the full slot rate reaches the design limit, and the stator slots are used for supporting a motor to work in a high-speed and ultra-high-speed state for a long time.
Further, the method comprises the steps of:
the stator core components are designed in a multi-position integrated mode without intervals, the assembly of each stator core component is designed and modeled by using a copy-paste mode of software modeling design, low errors of all the assemblies are guaranteed, the stator core components are formed into a stator core component array by using a high-precision die through one-time stamping, and high similarity among all the stator core components is guaranteed.
Further, the method comprises the steps of:
the outer sides of the stator modules in each group of stator core components are provided with a plurality of convex floating grains in a micro-carving way, the total length of the grains after the N groups of stator core components are in line is measured, and the similarity among the N groups of stator core components is obtained by calculating the ratio among the total lengths of the grains of the N groups of stator core components; and when the similarity is not smaller than the preset percentage, the N groups of stator core components are adopted for assembly, otherwise, when the similarity is smaller than the preset percentage, the N groups of stator core components are not adopted for assembly, so that the consistency of the stator core components is ensured.
Further, the method comprises the steps of:
m groups of stator core components are used for forming a single-phase stator, wherein M is less than N, a plurality of groups of single-phase stators are combined into a multi-phase stator through high-precision symmetrical design, high similarity between electrical characteristics of each single-phase stator is guaranteed, meanwhile, errors between phase resistances of each single-phase stator are kept to be not more than 0.1 ohm, and errors between phase inductances are kept to be not more than 0.1 microhenry, so that the motor can work in an ultra-high speed state or an ultra-silent state.
Further, the method comprises the steps of:
after N groups of stator core components are in line, winding and assembling the stator core components into a closed structure at intervals by adopting a disposable bending forming process, and if the bending times are more than once, automatically breaking the connection between the stator core components; wherein, the disposable bending forming process comprises the following steps: an ultrathin connecting sheet with a plurality of hidden micro reinforcing ribs is designed at the joint of the stator core component, so that the combined structure has the characteristic of one-step molding, and meanwhile, the closed structure is ensured not to deform.
Further, the method comprises the steps of:
the wiring support adopts a step-type structural design, the diameters of the two ends of the wiring support are larger than the diameter of the middle part of the wiring support, so that the connecting wire of the outer winding type coil is convenient to fix, the connecting wire cannot move along with a winding needle in the winding process, and meanwhile, the displacement of the connecting wire caused by up-and-down vibration of a motor in high-speed operation is prevented; the outer winding type coil is a coil fixed by adopting an outer winding method, and the tension of the coil enameled wire is kept constant in the winding process.
The stator is designed by the motor stator design method.
An electric machine comprising a stator and a rotor, wherein the stator is arranged according to the above description.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the traditional cylindrical iron core can only adopt an inner winding mode, gaps are needed among stator grooves, the groove filling rate of winding is too low, the diameter of an enameled wire can only be reduced under the condition of meeting the number of turns of winding, and the motor burnout caused by current overload easily occurs after the diameter of the enameled wire is reduced; the design method of the non-interval and high internal space of the non-interval stator slot ensures that more winding spaces are provided under the same condition, so that the slot filling rate is higher, or thicker enameled wires are used, the service life of the coil and the motor power are prolonged, and the motor can be supported to work at high speed and ultra-high speed for a long time;
2. the stator core component adopts a multi-position integrated non-interval design method, and is formed into a stator core component array by one-time stamping through a high-precision die, so that the extremely high similarity among the stator core components is ensured;
3. the M stator core components can form a single-phase stator, and the single-phase stator can be combined into a stator comprising two phases, three phases and the like, and the high-precision symmetrical design is adopted to ensure that the electric characteristics of the single-phase stators have extremely high similarity, and the consistency of electromagnetic parameters of each phase is ensured when the motor works due to the high similarity. Thus, the motor can be operated in an ultra-high speed state or an ultra-silent state.
4. The traditional cylindrical iron core can only be completed by adopting an inner winding mode, the inner winding production efficiency is low, the outer winding type coil is used for fixing the coil by adopting an outer winding method, the tension of an enameled wire is constant in the whole winding process, and the problems that the tension is overlarge, the tension of the enameled wire is damaged and the coil is easy to short-circuit due to the fact that the traditional inner winding mode is used for excessively bending the coil are solved.
Drawings
Fig. 1 is a schematic structural view of a stator according to the present invention.
Fig. 2 is a schematic structural view of a stator module according to the present invention.
Fig. 3 is a schematic structural view of the winding slot and the outer winding coil according to the present invention.
Fig. 4 is a schematic structural view of the connection support and the PIN needle according to the present invention.
Fig. 5 is a bottom view of the structure of the plurality of stator core components according to the present invention.
Fig. 6 is a top view of a plurality of stator core elements according to the present invention.
Fig. 7 is a physical view of the stator according to the present invention.
Detailed Description
The invention will be further illustrated with reference to specific examples.
Example 1
Referring to fig. 1 to 7, the motor stator design method provided in the present embodiment includes:
the stator is designed, N groups of stator core components are adopted to be assembled into a closed structure 12 in a winding and non-interval way after being in line, and the closed structure 12 comprises a cylindrical structure and a U-shaped structure, so that a customized magnetic field effect is conveniently generated, and a rotor is driven to move; the closed structure 12 is provided with an inner annular wall and an outer annular wall, the inner annular wall and the outer annular wall are formed by encircling the non-interval stator grooves 23, the outer winding type coil 22 is further wrapped in the closed structure 12, the outer winding type coil 22 is isolated from being contacted with other motor components, and structural vibration of each part of the motor can not cause collision damage of the outer winding type coil 22 when the motor runs at high speed, and meanwhile short circuits are avoided; meanwhile, the processing fault tolerance is remarkably improved, the performance of the stator is not reduced due to processing errors in mass production, and the consistency and reliability of products are further improved;
the stator core components are designed in a multi-position integrated mode without intervals, the assembly of each stator core component is designed and modeled by using a copy-paste mode of software modeling design, so that low error of each assembly is ensured, and a high-precision die is used for one-time stamping forming to form a stator core component array, wherein the error is better than 0.005mm, and high similarity among the stator core components is ensured;
the outer side of the stator module 11 in each group of stator core components is micro-engraved with a plurality of convex floating grains 13, the total length of the grains after the N groups of stator core components are in line is measured by using a machine vision detection method or other common length measurement methods, and the similarity between the N groups of stator core components is obtained by calculating the ratio between the total lengths of the grains of the N groups of stator core components; when the similarity is not less than 95%, the N groups of stator core components are adopted for assembly, otherwise, when the similarity is not less than 95%, the N groups of stator core components are not adopted for assembly, so that the consistency of the stator core components is ensured;
after N groups of stator core components are in line, winding and assembling the stator core components into a closed structure 12 at intervals by adopting a disposable bending forming process, and if the bending times are more than once, automatically breaking the connection between the stator core components; wherein, the disposable bending forming process comprises the following steps: an ultrathin connecting sheet hiding a plurality of micro reinforcing ribs is designed at the connecting position of the stator core components, so that the combined structure has the characteristic of one-step molding, and N groups of stator core components are ensured to be bent and molded into a closed structure 12; meanwhile, the rigidity of the bent reinforcing ribs is further improved, and the closed structure 12 is ensured not to deform due to the movement of the motor;
m groups of stator core components are used for forming a single-phase stator, wherein M is less than N, the single-phase stator is combined into a two-phase stator and a three-phase stator to a multi-phase stator, a high-precision symmetrical design process is adopted, high similarity between electrical characteristics of each single-phase stator is ensured, errors between phase resistances are kept to be not more than 0.1 ohm, and phase inductance errors are kept to be not more than 0.1 microhenry; due to the high similarity between the two electromagnetic parameters, the consistency of electromagnetic parameters of each phase is ensured when the motor works, so that the motor can work in an ultra-high speed state or an ultra-silent state.
Each group of stator core components comprises a stator module 11, a winding groove 21 sleeved on the stator module 11, a winding coil 22 wound on the winding groove 21, a wiring bracket 32 and a PIN needle 31 arranged on the wiring bracket 32, wherein the wiring bracket 32 is the smallest working module of the stator;
the winding groove 21, the outer winding type coil 22 and the non-interval stator groove 23 form a stator auxiliary winding assembly, which is designed to be non-interval and has high inner space, so that the groove full rate is ensured to be higher, and the stator auxiliary winding assembly is used for supporting the motor to work at high speed and super high speed for a long time; the non-interval stator slots 23 are of an I-shaped structure, long ends of the non-interval stator slots 23 are connected in a non-interval mode in a surrounding mode to form an outer annular wall, short ends of the non-interval stator slots 23 are connected in a surrounding mode to form an inner annular wall, the short ends are of a protective design, the combination of the short ends and the outer protrusions form a cage-like structure, a high inner space is formed between the long ends and the short ends, wiring of the outer winding type coils 22 is facilitated, the full slot rate reaches a design limit, and the motor is used for supporting the motor to work at a high speed and an ultra-high speed for a long time; the wiring bracket 32 is attached to the starting point and the ending point of the enameled wire on the outer winding type coil 22 and is used for fixing the position of the connecting wire of the outer winding type coil 22; the wiring support 32 is designed in a stepped manner, the diameters of the two ends of the wiring support 32 are larger than the diameter of the middle part of the wiring support 32, the two ends of the support are thick, the middle part is thin, the connecting wire of the outer winding type coil 22 is convenient to fix, the connecting wire cannot move along with a winding needle in the winding process, the winding quality is improved, and when the motor runs at a high speed, the design prevents the connecting wire from moving due to up-down vibration, so that the reliability of the coil is improved; meanwhile, the outer winding type coil 22 is a coil fixed by adopting an outer winding method, the tension of a coil enameled wire is kept constant in the winding process, and the problem that the coil is short-circuited due to the fact that the tension is too high and the tension of the enameled wire is damaged when the coil is excessively bent is avoided.
Example 2
Referring to fig. 1 to 7, the stator provided in this embodiment is designed by the motor stator design method described in embodiment 1, and includes N groups of stator core components, where N groups of stator core components are wound in series and assembled into a closed structure 12 without space, and stator slots 23 with no space are formed in the closed structure 12, and each group of stator core components includes a stator module 11, a winding slot 21 sleeved on the stator module 11, an outer winding coil 22 wound on the winding slot 21, a wire connection bracket 32 attached to an enameled wire on the outer winding coil 22, and PIN needles 31 mounted on the wire connection bracket 32.
Example 3
The motor provided by the present embodiment includes a stator and a rotor, the stator being provided by the embodiment 2.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, so variations in shape and principles of the present invention should be covered.
Claims (10)
1. A method of designing a stator for an electric machine, comprising:
designing a stator, adopting N groups of stator core components to be wound in series and assembled into a closed structure (12) without interval;
each group of stator core components comprises a stator module (11), a winding groove (21) sleeved on the stator module (11), an outer winding coil (22) wound on the winding groove (21), a wiring support (32) and a PIN needle (31) arranged on the wiring support (32), and the PIN needle is used as a minimum working module of the stator;
the wiring bracket (32) is attached with the starting point and the end point of the enameled wire on the outer winding type coil (22) and is used for fixing the position of the connecting wire of the outer winding type coil (22);
a continuous stator slot (23) is formed in the closed structure (12) to improve the quality and slot filling rate of the outer winding coil (22).
2. A method of designing a stator for an electric machine as claimed in claim 1, comprising:
the closed structure (12) comprises a cylindrical structure and a U-shaped structure, the closed structure (12) is provided with an inner annular wall and an outer annular wall, the outer winding type coil (22) is further wrapped in the closed structure (12), the outer winding type coil (22) is isolated from being contacted with other motor parts, and when the motor runs at a high speed, structural vibration of each part of the motor can not cause the collision damage of the outer winding type coil (22), and meanwhile short circuits are avoided.
3. A method of designing a stator for an electric machine as claimed in claim 2, comprising:
the stator slots (23) are of an I-shaped structure, the long ends of the stator slots (23) are connected in a surrounding mode without intervals to form an outer ring wall, the short ends of the stator slots (23) are connected in a surrounding mode to form an inner ring wall, the long ends and the short ends of the stator slots (23) protrude outwards along the radial direction to form an inner space with large radial space, wiring of the outer winding type coils (22) is facilitated, the full slot rate reaches the design limit, and the stator slots are used for supporting a motor to work at a high speed and an ultra-high speed for a long time.
4. A method of designing a stator for an electric machine as claimed in claim 1, comprising:
the stator core components are designed in a multi-position integrated mode without intervals, the assembly of each stator core component is designed and modeled by using a copy-paste mode of software modeling design, low errors of all the assemblies are guaranteed, the stator core components are formed into a stator core component array by using a high-precision die through one-time stamping, and high similarity among all the stator core components is guaranteed.
5. The method of claim 4, comprising:
the outer sides of the stator modules (11) in each group of stator core components are provided with a plurality of convex floating grains (13) in a micro-engraving way, the total length of the grains after the N groups of stator core components are in line is measured, and the similarity among the N groups of stator core components is obtained by calculating the ratio among the total lengths of the grains of the N groups of stator core components; and when the similarity is not smaller than the preset percentage, the N groups of stator core components are adopted for assembly, otherwise, when the similarity is smaller than the preset percentage, the N groups of stator core components are not adopted for assembly, so that the consistency of the stator core components is ensured.
6. The method of claim 5, comprising:
m groups of stator core components are used for forming a single-phase stator, wherein M is less than N, a plurality of groups of single-phase stators are combined into a multi-phase stator through high-precision symmetrical design, high similarity between electrical characteristics of each single-phase stator is guaranteed, meanwhile, errors between phase resistances of each single-phase stator are kept to be not more than 0.1 ohm, and errors between phase inductances are kept to be not more than 0.1 microhenry, so that the motor can work in an ultra-high speed state or an ultra-silent state.
7. A method of designing a stator for an electric machine as claimed in claim 1, comprising:
after N groups of stator core components are in line, winding and assembling the stator core components into a closed structure (12) at intervals by adopting a disposable bending forming process, and if the bending times are more than once, automatically breaking the connection between the stator core components; wherein, the disposable bending forming process comprises the following steps: an ultrathin connecting sheet with a plurality of hidden micro reinforcing ribs is designed at the connecting position of the stator core component, so that the combined structure has the characteristic of one-step molding, and meanwhile, the closed structure (12) is ensured not to deform.
8. A method of designing a stator for an electric machine as claimed in claim 1, comprising:
the wiring support (32) adopts a step-type structural design, the diameters of the two ends of the wiring support (32) are larger than the diameter of the middle part of the wiring support (32), so that the connecting wire of the outer winding coil (22) is convenient to fix, the connecting wire cannot move along with a winding needle in the winding process, and meanwhile, the displacement of the connecting wire caused by up-and-down vibration of a motor at high speed is prevented; the outer winding type coil (22) is a coil fixed by adopting an outer winding method, and the tension of a coil enameled wire is kept constant in the winding process.
9. A stator, characterized in that the stator is designed by the motor stator design method according to any one of claims 1 to 8.
10. An electric motor, characterized in that: comprising a stator and a rotor, wherein the stator is arranged according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311761606.2A CN117748767A (en) | 2023-12-20 | 2023-12-20 | Motor stator design method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311761606.2A CN117748767A (en) | 2023-12-20 | 2023-12-20 | Motor stator design method |
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| Publication Number | Publication Date |
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| CN117748767A true CN117748767A (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311761606.2A Pending CN117748767A (en) | 2023-12-20 | 2023-12-20 | Motor stator design method |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1145544A (en) * | 1995-06-07 | 1997-03-19 | 松下电器产业株式会社 | Motor stator and method of manufacturing thereof |
| CN1279530A (en) * | 1999-06-29 | 2001-01-10 | 三洋电机株式会社 | Brushless D.C. motor and coolant compressor equipped therewith |
| JP2001304123A (en) * | 2000-04-27 | 2001-10-31 | Mitsubishi Electric Corp | Hermetic compressor, method of manufacturing the same, and refrigerating air conditioning device |
| CN203504328U (en) * | 2013-09-12 | 2014-03-26 | 杭州松下马达有限公司 | Insulator for plastic-packaged motor stator assembly and plastic-packaged motor |
| CN212784950U (en) * | 2020-09-02 | 2021-03-23 | 默拓（苏州）机电科技有限公司 | Direct current brushless motor |
| JP2021175240A (en) * | 2020-04-22 | 2021-11-01 | パナソニックＩｐマネジメント株式会社 | Manufacturing method of iron core, iron core, and stator |
| CN219123992U (en) * | 2023-01-09 | 2023-06-02 | 广东威灵电机制造有限公司 | Insulating frame, stator, motor and electrical apparatus |
-
2023
- 2023-12-20 CN CN202311761606.2A patent/CN117748767A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1145544A (en) * | 1995-06-07 | 1997-03-19 | 松下电器产业株式会社 | Motor stator and method of manufacturing thereof |
| CN1279530A (en) * | 1999-06-29 | 2001-01-10 | 三洋电机株式会社 | Brushless D.C. motor and coolant compressor equipped therewith |
| JP2001304123A (en) * | 2000-04-27 | 2001-10-31 | Mitsubishi Electric Corp | Hermetic compressor, method of manufacturing the same, and refrigerating air conditioning device |
| CN203504328U (en) * | 2013-09-12 | 2014-03-26 | 杭州松下马达有限公司 | Insulator for plastic-packaged motor stator assembly and plastic-packaged motor |
| JP2021175240A (en) * | 2020-04-22 | 2021-11-01 | パナソニックＩｐマネジメント株式会社 | Manufacturing method of iron core, iron core, and stator |
| CN212784950U (en) * | 2020-09-02 | 2021-03-23 | 默拓（苏州）机电科技有限公司 | Direct current brushless motor |
| CN219123992U (en) * | 2023-01-09 | 2023-06-02 | 广东威灵电机制造有限公司 | Insulating frame, stator, motor and electrical apparatus |
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