CN214100992U - Stator punching sheet of fault-tolerant motor - Google Patents
Stator punching sheet of fault-tolerant motor Download PDFInfo
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- CN214100992U CN214100992U CN202023014363.0U CN202023014363U CN214100992U CN 214100992 U CN214100992 U CN 214100992U CN 202023014363 U CN202023014363 U CN 202023014363U CN 214100992 U CN214100992 U CN 214100992U
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- 238000004080 punching Methods 0.000 title claims abstract description 30
- 238000003475 lamination Methods 0.000 claims description 5
- 238000004804 winding Methods 0.000 description 38
- 238000010586 diagram Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 1
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Abstract
The utility model discloses a fault-tolerant motor's stator is towards piece has: the stator punching sheet body is annular; the stator punching sheet comprises stator main teeth, wherein a series of stator main teeth are uniformly arranged in the circumferential direction of a stator punching sheet body; stator slots arranged at both sides of the stator main teeth; the stator auxiliary tooth is further arranged in the middle of the stator slot, the stator auxiliary tooth divides the stator slot into two stator slots, fault tolerance of the motor is improved, reliability of the motor is improved, and performance of the motor is not greatly affected.
Description
Technical Field
The utility model belongs to the technical field of the new energy automobile motor, especially, relate to a fault-tolerant motor's stator punching.
Background
In recent years, with the continuous increase of power and torque density of motors, the motors have been widely applied to the fields of household appliances, electric automobiles, aerospace and the like, and when the motors are applied to the occasions with high safety and high reliability, the motors are required to have higher fault-tolerant capability and redundancy design.
In the process of implementing the present invention, the inventor finds that the prior art has at least the following problems:
most motors in the prior art do not have fault tolerance capability, in the existing fault tolerance motors, fault tolerance of the motors is mainly achieved through a software control mode, or fault tolerance is achieved through adding insulating materials among windings, although the fault tolerance motors have certain fault tolerance capability, the reliability is still low, and after a fault occurs, the motors can work, but the performance is greatly reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a fault-tolerant motor's of performance that the reliability of the fault-tolerant ability of promotion motor, improvement motor and not influence the motor by a wide margin stator towards the piece is provided.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a stator punching sheet of a fault-tolerant motor comprises:
the stator punching sheet body is annular;
the stator punching sheet comprises a stator main tooth, wherein a series of stator main teeth are uniformly arranged in the circumferential direction of a stator punching sheet body;
stator slots disposed on both sides of the stator main teeth;
the stator auxiliary tooth is arranged in the middle of the stator slot and divides the stator slot into two stator slots.
Stator slots on two sides of the auxiliary teeth are symmetrical to each other, and openings are formed in the stator slots.
Two sides of the end part of the stator main tooth are respectively provided with a stator wide slot shoulder; and two sides of the end part of the stator auxiliary tooth are respectively provided with a stator narrow groove shoulder.
The stator punching sheet body is of a modular structure, splicing buckles and splicing grooves are arranged on two sides of the modular stator punching sheet respectively, and adjacent modular stator punching sheets are connected through the splicing buckles and the splicing grooves.
One of the technical schemes has the advantages that the physical isolation among the windings is realized by adding the auxiliary tooth in the stator slot, so that the fault-tolerant capability of the motor is effectively improved, meanwhile, the stator adopts two sets of winding scheme design, each phase of winding is composed of two mutually independent windings, when one winding is damaged due to failure, the other winding can still work normally and the performance of the motor cannot be greatly influenced due to phase loss; in addition, when the motor adopts a modular design scheme, the splicing grooves and the splicing seams are designed on the auxiliary teeth, so that the damage of the modular motor splicing scheme to the stator magnetic circuit is reduced, the loss of the modular motor is reduced, and the efficiency of the motor is improved.
Drawings
Fig. 1 is a schematic structural diagram of a stator lamination of an inner rotor fault-tolerant motor provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a stator punching sheet of the outer rotor fault-tolerant motor shown in fig. 1;
FIG. 3 is an enlarged view of a portion of FIGS. 1 and 2;
fig. 4 is a schematic view of a modular structure of a stator lamination of the inner rotor fault-tolerant motor shown in fig. 1 and 2;
FIG. 5 is a schematic diagram of a multiphase fault tolerant motor winding connection;
FIG. 6 is a schematic diagram of a phase modular winding connection of the fault tolerant motor of FIG. 5;
the labels in the above figures are: 1. stator external diameter, 2, stator internal diameter, 3, stator owner tooth, 4, stator auxiliary tooth, 5, stator slot, 6, stator yoke, 7, stator slot, 9, stator notch, 10, stator wide groove shoulder, 11, stator narrow groove shoulder, 12, modularization stator punching sheet, 13, concatenation buckle, 14, concatenation groove, 15, concatenation seam.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1-6, a stator lamination of a fault tolerant motor has:
the stator punching sheet body is annular;
the stator punching sheet comprises stator main teeth, wherein a series of stator main teeth are uniformly arranged in the circumferential direction of a stator punching sheet body;
stator slots arranged at both sides of the stator main teeth;
the stator auxiliary tooth, the middle part of stator slot still is equipped with the stator auxiliary tooth, and the stator auxiliary tooth is divided into two stator notch with the stator slot.
Stator slots on two sides of the auxiliary teeth are symmetrical to each other, and openings are formed in the stator slots.
Two sides of the end part of the stator main tooth are respectively provided with a stator wide slot shoulder; two sides of the end part of the stator auxiliary tooth are respectively provided with a stator narrow groove shoulder.
The stator punching sheet body is of a modular structure, splicing buckles and splicing grooves are arranged on two sides of the modular stator punching sheet respectively, and adjacent modular stator punching sheets are connected through the splicing buckles and the splicing grooves.
An auxiliary tooth with the width of 3mm is arranged in each stator slot 5 along the center, and the stator main tooth and the stator auxiliary tooth are parallel teeth.
As shown in fig. 2, the stator punching body is provided with a plurality of stator slots and stator main teeth which are uniformly distributed along the circumferential direction; an auxiliary tooth with narrower width is arranged in each stator slot along the central position, and the stator slot is divided into two small stator slots which are bilaterally symmetrical through the arranged auxiliary tooth; the stator groove is an open groove, and two small stator grooves are respectively provided with a notch with the same size; two wide groove shoulders which are bilaterally symmetrical are arranged on the stator main tooth, and two narrow groove shoulders which are bilaterally symmetrical are arranged on the stator auxiliary tooth.
The auxiliary teeth are only used for physically isolating windings in the left and right slots, do not serve as a motor magnetic circuit, and are designed to be narrow in width, generally 1mm to 5 mm.
Each phase of stator winding is composed of two mutually independent windings which are respectively wound on two adjacent stator main teeth, when one winding is damaged due to failure, the other winding still can work normally and the performance of the motor cannot be greatly influenced due to phase loss, in addition, because the stator auxiliary teeth are arranged between the two windings in the same stator slot, when one winding is in short circuit, inter-turn and other faults, the other winding cannot be burnt due to high temperature, spark and the like generated by the short circuit, inter-turn and other faults.
As shown in fig. 4, when the motor is designed in a modularized manner, the whole stator core is formed by splicing a plurality of stator modules, and the splicing grooves and the splicing seams are formed in the auxiliary teeth of the stator, so that the completeness of the main teeth of the stator is ensured, the magnetic circuit of the motor is not influenced, the loss of the motor is favorably reduced, and the efficiency of the motor is improved.
As shown in fig. 6, when the motor is designed in a modularized manner, a single module is composed of 2 complete stator slots and two stator main teeth, two mutually independent stator windings are wound on the two stator main teeth, the two stator windings are in the same phase, when one of the two windings is damaged due to a fault, the other one can still work normally and cannot greatly influence the performance of the motor due to phase loss, and in addition, because the stator auxiliary teeth are arranged between the two windings in the same stator slot, the other winding cannot be burnt due to high temperature, sparks and the like generated when one of the two windings is in faults such as short circuit and interturn.
As shown in fig. 2, the right side of fig. 3, and the right side of fig. 4, the design scheme corresponding to the outer rotor motor is the same as the inner rotor. The utility model provides a technical scheme is applicable to inner rotor motor and external rotor motor equally.
The auxiliary teeth are arranged in the stator slots, the same stator slot is divided into two mutually independent small stator slots, physical isolation between windings in the two small stator slots is realized, when one winding has faults such as short circuit and turn-to-turn, the other winding cannot be burnt by high temperature, sparks and the like generated when the other winding has faults, so that the fault-tolerant capability of the motor is effectively improved, meanwhile, the stator adopts two sets of winding scheme design, each phase of winding consists of two mutually independent windings, when one winding has faults and is damaged, the other winding still can normally work and cannot greatly influence the performance of the motor due to phase loss; in addition, when the motor adopts a modular design scheme, the splicing grooves and the splicing seams are designed on the auxiliary teeth, the completeness of the main teeth of the stator in the magnetic circuit of the motor is ensured, and the damage of the splicing scheme of the modular motor to the magnetic circuit of the stator is reduced, so that the loss of the modular motor is reduced, and the efficiency of the motor is improved.
After the structure is adopted, the physical isolation among the windings is realized by adding the auxiliary teeth in the stator slots, so that the fault-tolerant capability of the motor is effectively improved, meanwhile, the stator adopts two sets of winding scheme designs, each phase of winding consists of two mutually independent windings, when one winding is damaged due to failure, the other winding can still work normally and the performance of the motor cannot be greatly influenced due to phase loss; in addition, when the motor adopts a modular design scheme, the splicing grooves and the splicing seams are designed on the auxiliary teeth, so that the damage of the modular motor splicing scheme to the stator magnetic circuit is reduced, the loss of the modular motor is reduced, and the efficiency of the motor is improved.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.
Claims (4)
1. A stator punching sheet of a fault-tolerant motor is characterized by comprising:
the stator punching sheet body is annular;
the stator punching sheet comprises a stator main tooth, wherein a series of stator main teeth are uniformly arranged in the circumferential direction of a stator punching sheet body;
stator slots disposed on both sides of the stator main teeth;
the stator auxiliary tooth is arranged in the middle of the stator slot and divides the stator slot into two stator slots.
2. The stator lamination of the fault-tolerant motor as claimed in claim 1, wherein the stator slots on both sides of the auxiliary tooth are symmetrical to each other, and the stator slots are provided with openings.
3. The stator lamination of the fault-tolerant motor as claimed in claim 2, wherein two sides of the end part of the main tooth of the stator are respectively provided with a stator wide groove shoulder; and two sides of the end part of the stator auxiliary tooth are respectively provided with a stator narrow groove shoulder.
4. The stator punching of the fault-tolerant motor as claimed in claim 3, wherein the stator punching body is of a modular structure, splicing buckles and splicing grooves are respectively arranged on two sides of the modular stator punching, and adjacent modular stator punching is connected through the splicing buckles and the splicing grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023014363.0U CN214100992U (en) | 2020-12-15 | 2020-12-15 | Stator punching sheet of fault-tolerant motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023014363.0U CN214100992U (en) | 2020-12-15 | 2020-12-15 | Stator punching sheet of fault-tolerant motor |
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| Publication Number | Publication Date |
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| CN214100992U true CN214100992U (en) | 2021-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023014363.0U Active CN214100992U (en) | 2020-12-15 | 2020-12-15 | Stator punching sheet of fault-tolerant motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115021446A (en) * | 2022-02-14 | 2022-09-06 | 三峡大学 | Non-uniform air gap Halbach array magnetic variable speed magnetic field modulation motor with auxiliary teeth |
-
2020
- 2020-12-15 CN CN202023014363.0U patent/CN214100992U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115021446A (en) * | 2022-02-14 | 2022-09-06 | 三峡大学 | Non-uniform air gap Halbach array magnetic variable speed magnetic field modulation motor with auxiliary teeth |
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