CN112910133B - Motor rotor, motor, car - Google Patents
Motor rotor, motor, car Download PDFInfo
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- CN112910133B CN112910133B CN202110168368.9A CN202110168368A CN112910133B CN 112910133 B CN112910133 B CN 112910133B CN 202110168368 A CN202110168368 A CN 202110168368A CN 112910133 B CN112910133 B CN 112910133B
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 230000010349 pulsation Effects 0.000 abstract description 8
- 230000005540 biological transmission Effects 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 6
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000001603 reducing effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 241001290864 Schoenoplectus Species 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a motor rotor, a motor and an automobile, wherein the motor rotor comprises a rotor body, the rotor body is provided with a plurality of magnetic poles which are uniformly alternated along the circumferential direction of the rotor body, the rotor body comprises a rotor core, a first magnetic steel groove and a second magnetic steel groove are formed in the rotor core under each magnetic pole, the first magnetic steel groove and the second magnetic steel groove are symmetrical about the center line of the magnetic pole, the diameter of the excircle of the rotor core is Dw, a sector ring area is formed between a first circle which is concentric with the excircle of the rotor core and has the diameter of Dd and the excircle of the rotor core, a first auxiliary groove is formed in the rotor core in the sector ring area, and Dw is more than or equal to 0.89Dw and less than or equal to 0.91 Dw. According to the invention, the magnetic density of the rotor core at the sector ring area is relatively high, and the first auxiliary groove is constructed on the sector ring area, so that the magnetic density nonuniformity of the rotor core can be obviously changed, the torque pulsation is obviously reduced, and the NVH performance of the motor on board is further optimized.
Description
Technical Field
The invention belongs to the technical field of motor manufacturing, and particularly relates to a motor rotor, a motor and an automobile.
Background
The permanent magnet synchronous motor, particularly the built-in permanent magnet synchronous motor, is widely applied to a driving system of an electric automobile because of the advantages of wide speed regulation range, high efficiency, high power density, compact structure, high response capability and the like.
The difference of the rotor topology of the permanent magnet synchronous motor has great influence on the performance of the motor. Compared with a rotor structure of a surface-mounted permanent magnet, the built-in permanent magnet has higher permanent magnet utilization rate and wider constant power speed range due to asymmetry of a rotor magnetic circuit. Meanwhile, the built-in permanent magnet synchronous motor has the characteristic of high flexibility of rotor design, so that the performance of the motor can be improved by changing the topological structure of the rotor, increasing the modes of shape modification and the like.
The electric automobile is a main type of the current new energy automobile, and compared with the traditional internal combustion engine automobile, the power transmission system of the electric automobile has larger change in power source and structure, so that the torsional vibration of the transmission system has new characteristics. The research on how to reduce the torsional vibration of the power transmission system of the electric automobile has important significance on improving the safety and the comfort of the whole automobile, the driving motor is a main excitation source of the steady-state torsional vibration of the transmission system, and the magnitude of the torque pulsation directly influences the steady-state torsional vibration response of the transmission system.
The size of the outer diameter of the rotor of the permanent magnet synchronous motor influences the arrangement and adjustment space of magnetic poles, when the outer diameter of the rotor is small, the effect of reducing the torque pulsation of the motor is limited by adjusting the size of the magnetic steel such as the thickness and the width of the magnetic steel or different arrangement angles of the magnetic steel, the torque pulsation can be optimized by modifying the shape of the rotor, and the NVH (Noise, Vibration and Harshness) performance of the motor is further optimized.
Disclosure of Invention
Therefore, the invention provides a motor rotor, a motor and an automobile, which overcome the defect that the torque pulsation reducing effect of the motor is limited by adjusting the size of magnetic steel in the prior art.
In order to solve the above problems, the present invention provides a motor rotor, including a rotor body, where the rotor body has a plurality of magnetic poles uniformly alternating along a circumferential direction thereof, the rotor body includes a rotor core, under each magnetic pole, a first magnetic steel slot and a second magnetic steel slot are configured on the rotor core, the first magnetic steel slot and the second magnetic steel slot are symmetrical with respect to a center line of the magnetic pole, a diameter of an outer circle of the rotor core is Dw, a sector ring region is formed between a first circle concentric with the outer circle of the rotor core and having a diameter Dd, and a first auxiliary slot is configured on the rotor core in the sector ring region, and Dd is greater than or equal to 0.89Dw and less than or equal to 0.91 Dw.
Preferably, an opening angle alpha towards one side of the excircle of the rotor core is formed between the first magnetic steel groove and the second magnetic steel groove, and alpha is more than or equal to 145 degrees and less than or equal to 151 degrees.
Preferably, first auxiliary tank is in the magnetic pole central line with between the first magnet steel groove, first auxiliary tank includes first radial limit, the radial limit of second, the radial limit of third, first circumference limit, second circumference limit, third circumference limit, first radial limit, the radial limit of second, the radial limit of third by the magnetic pole central line orientation first magnet steel groove one side sets up at intervals in proper order, first circumference limit, second circumference limit, third circumference limit along rotor core's radial outside sets up at intervals in proper order, first radial limit, third circumference limit, the radial limit of second, second circumference limit, the radial limit of third, first circumference limit meet end to end in proper order.
Preferably, an included angle between the first radial edge and the second radial edge is a first included angle β a, an included angle between the second radial edge and the third radial edge is a second included angle β b, and β a ═ β b; and/or the diameter of the first positioning circle corresponding to the first circumferential edge is Da, the diameter of the second positioning circle corresponding to the second circumferential edge is Db, the diameter of the third positioning circle corresponding to the third circumferential edge is Dc, Da is 1.006Dd, Db is 1.011Dd, and Dc is 1.016 Dd.
Preferably, the angle between the first radial edge and the pole center line is γ a, γ a ═ 21 α/1480, and/or β a ═ β b ═ 4 γ a/21.
Preferably, a second auxiliary slot is further configured on the rotor core in the sector ring region, and the second auxiliary slot is located between the magnetic pole center line and the second magnetic steel slot.
Preferably, the second auxiliary groove includes a fourth radial edge, a fifth radial edge, a sixth radial edge, a fourth circumferential edge, a fifth circumferential edge, and a sixth circumferential edge, the fourth radial edge, the fifth radial edge, and the sixth radial edge are oriented by the magnetic pole center line the second magnetic steel groove one side is sequentially spaced and arranged, the fourth circumferential edge, the fifth circumferential edge, and the sixth circumferential edge are sequentially spaced and arranged radially outward of the rotor core, and the fourth radial edge, the sixth circumferential edge, the sixth radial edge, the fifth circumferential edge, the fifth radial edge, and the fourth circumferential edge are sequentially connected end to end.
Preferably, an included angle between the fourth radial edge and the fifth radial edge is a first included angle wa, an included angle between the fifth radial edge and the sixth radial edge is a second included angle wb, and wa ═ wb; and/or the diameter of the fourth positioning circle corresponding to the fourth circumferential edge is De, the diameter of the fifth positioning circle corresponding to the fifth circumferential edge is Df, the diameter of the sixth positioning circle corresponding to the sixth circumferential edge is Dg, De is 1.087Dd, Df is 1.094Dd, and Dg is 1.101 Dd.
Preferably, the fourth radial edge forms an angle γ b with the pole center line, γ b ═ 121 α/1480, and/or β a ═ β b ═ 4 γ a/121.
Preferably Dw 156.6mm, Dd 140mm and α 148 °.
The invention also provides a motor which comprises the motor rotor.
The invention further provides an automobile which comprises the driving motor.
According to the motor rotor, the motor and the automobile, the magnetic density of the rotor core at the sector ring area is relatively high, the first auxiliary groove is formed in the sector ring area, the nonuniformity of the magnetic density of the rotor core can be remarkably changed, the torque pulsation is remarkably reduced, and the NVH performance of the motor on the automobile is optimized.
Drawings
Fig. 1 is a partial structural view of a rotor core in a rotor of an electric machine according to an embodiment of the present invention, in which a shaded portion shows a sector ring region;
FIG. 2 is an enlarged partial schematic view of FIG. 1;
FIG. 3 is a partially enlarged view illustrating the first auxiliary groove of FIG. 1;
FIG. 4 is a partially enlarged view illustrating a structure of a second auxiliary groove of FIG. 1;
fig. 5 is a torque output curve obtained by simulating the motor rotor according to the embodiment of the present invention.
The reference numerals are represented as:
11. a rotor core; 12. a first magnetic steel slot; 13. a second magnetic steel slot; 14. a fan ring area; 21. a first auxiliary groove; 211. a first radial edge; 212. a second radial edge; 213. a third radial edge; 214. a first circumferential edge; 215. a second circumferential edge; 216. a third circumferential edge; 22. a second auxiliary groove; 221. a fourth radial edge; 222. a fifth radial edge; 223. a sixth radial edge; 224. a fourth circumferential edge; 225. a fifth circumferential edge; 226. a sixth circumferential edge.
Detailed Description
Referring to fig. 1 to 5 in combination, according to an embodiment of the present invention, there is provided a motor rotor including a rotor body having a plurality of magnetic poles uniformly alternating along a circumferential direction thereof, the rotor body including a rotor core 11, the rotor core 11 having a first magnetic steel slot 12 and a second magnetic steel slot 13 formed thereon, the first magnetic steel slot 12 and the second magnetic steel slot 13 being symmetric with respect to a magnetic pole center line, an outer circle of the rotor core 11 having an outer diameter Dw, a sector ring region 14 formed between a first circle concentric with the outer circle of the rotor core 11 and having a diameter Dd and the outer circle of the rotor core 11, the rotor core 11 in the sector ring region 14 having a first auxiliary slot 21 formed thereon, and Dd ≦ 0.89Dw ≦ 0.91 Dw. In the technical scheme, the magnetic density of the rotor core 11 at the sector ring area 14 is relatively high, and by constructing the first auxiliary groove 21 on the sector ring area 14, the magnetic density nonuniformity of the rotor core 11 can be remarkably changed, the torque ripple is remarkably reduced, and the NVH performance of the motor on the vehicle is further optimized.
In some embodiments, the first magnetic steel slot 12 and the second magnetic steel slot 13 form an opening angle α towards the outer circle side of the rotor core 11, 145 ° ≦ α ≦ 151 °, for example, α ≦ 148 °, so as to enable the opening angle to be in a reasonable range, optimize torque ripple, and reduce harmonics.
Preferably, the first auxiliary slot 21 is located between the magnetic pole center line and the first magnetic steel slot 12, the first auxiliary slot 21 includes a first radial edge 211, a second radial edge 212, a third radial edge 213, a first circumferential edge 214, a second circumferential edge 215, and a third circumferential edge 216, the first radial edge 211, the second radial edge 212, and the third radial edge 213 are sequentially disposed at intervals from the magnetic pole center line toward the first magnetic steel slot 12 side, the first circumferential edge 214, the second circumferential edge 215, and the third circumferential edge 216 are sequentially disposed at intervals from the radial direction of the rotor core 11 to the outside, and the first radial edge 211, the third circumferential edge 216, the second radial edge 212, the second circumferential edge 215, the third radial edge 213, and the first circumferential edge 214 are sequentially connected end to end. Further, an included angle between the first radial edge 211 and the second radial edge 212 is a first included angle β a, an included angle between the second radial edge 212 and the third radial edge 213 is a second included angle β b, and β a ═ β b; and/or the diameter of the first positioning circle corresponding to the first circumferential side 214 is Da, the diameter of the second positioning circle corresponding to the second circumferential side 215 is Db, the diameter of the third positioning circle corresponding to the third circumferential side 216 is Dc, Da is 1.006Dd, Db is 1.011Dd, and Dc is 1.016Dd, in this technical solution, the first auxiliary groove 21 after being defined can further reduce the torque pulsation of the motor rotor by defining the shape and size of the first auxiliary groove 21. Further preferably, the angle between the first radial edge 211 and the pole center line is γ a, γ a ═ 21 α/1480, and/or β a ═ β b ═ 4 γ a/21.
In some embodiments, a second auxiliary slot 22 is further formed on the rotor core 11 in the sector ring region 14, the second auxiliary slot 22 is located between the magnetic pole center line and the second magnetic steel slot 13, and the torque ripple of the motor rotor can be further reduced through the interaction between the first auxiliary slot 21 and the second auxiliary slot 22. Further, the second auxiliary slot 22 includes a fourth radial edge 221, a fifth radial edge 222, a sixth radial edge 223, a fourth circumferential edge 224, a fifth circumferential edge 225, and a sixth circumferential edge 226, where the fourth radial edge 221, the fifth radial edge 222, and the sixth radial edge 223 are sequentially arranged at intervals from the magnetic pole center line toward the second magnetic steel slot 13, the fourth circumferential edge 224, the fifth circumferential edge 225, and the sixth circumferential edge 226 are sequentially arranged at intervals from the radial outside of the rotor core 11, and the fourth radial edge 221, the sixth circumferential edge 226, the sixth radial edge 223, the fifth circumferential edge 225, the fifth radial edge 222, and the fourth circumferential edge 224 are sequentially connected end to end. Furthermore, an included angle between the fourth radial edge 221 and the fifth radial edge 222 is a first included angle wa, an included angle between the fifth radial edge 222 and the sixth radial edge 223 is a second included angle wb, and wa is equal to wb; and/or the diameter of the fourth positioning circle corresponding to the fourth circumferential edge 224 is De, the diameter of the fifth positioning circle corresponding to the fifth circumferential edge 225 is Df, the diameter of the sixth positioning circle corresponding to the sixth circumferential edge 226 is Dg, De is 1.087Dd, Df is 1.094Dd, Dg is 1.101Dd, the included angle between the fourth radial edge 221 and the magnetic pole center line is γ b, γ b is 121 α/1480, and/or β a is β b is 4 γ a/121. In this way, the torque pulsation of the motor rotor can be minimized by the second auxiliary groove 22 and the first auxiliary groove 21 defined by the specific shape and size, and simultaneously the torsional vibration of the corresponding motor and the transmission system of the whole vehicle is minimized, and the NVH performance of the motor on the vehicle is optimal.
It is understood that, when the size of the corresponding rotor core 11 is relatively small, the first auxiliary slot 21 and the second auxiliary slot 22 are both formed by splicing three squares together.
In a specific embodiment, Dw is 156.6mm, Dd is 140mm, α is 148 °, the outer diameter of the motor stator matching the motor rotor is 220mm to 230mm, the corresponding motor power is 100kW to 120kW, and specifically, the motor is a permanent magnet synchronous drive motor, the length and width dimensions of the magnetic steel are 17mm and 5.5mm, the width (circumferential width) of the magnetic bridge between the two magnetic steels is 1mm, Da is 140.9mm, Db is 141.6mm, Dc is 142.3mm, De is 152.2mm, Df is 153.2mm, Dg is 154.2mm, γ a is 2.1 °, γ b is 12.1 γ, β a is β b is w is 0.4 °.
Fig. 5 is a torque output curve diagram obtained by simulating the motor rotor according to the embodiment of the present invention, in which the abscissa is time, the unit is ms, the ordinate is torque, the unit is Nm, and it can be obtained from data in the diagram that the torque ripple of the motor rotor using the present invention is 0.032, that is, 3.2%, and the torque ripple is significantly reduced.
According to an embodiment of the invention, an automobile is also provided, which includes a driving motor, and the driving motor is the motor.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (9)
1. The motor rotor is characterized by comprising a rotor body, wherein the rotor body is provided with a plurality of magnetic poles which are uniformly alternated along the circumferential direction of the rotor body, the rotor body comprises a rotor core (11), under each magnetic pole, a first magnetic steel groove (12) and a second magnetic steel groove (13) are constructed on the rotor core (11), the first magnetic steel groove (12) and the second magnetic steel groove (13) are symmetrical about a central line of the magnetic pole, the diameter of the excircle of the rotor core (11) is Dw, a fan-ring area (14) is formed between a first circle which is concentric with the excircle of the rotor core (11) and has the diameter of Dd and the excircle of the rotor core (11), a first auxiliary groove (21) is constructed on the rotor core (11) in the fan-ring area (14), and Dw is not less than 0.89Dw and not more than 0.91 Dw; an opening angle alpha towards one side of the excircle of the rotor core (11) is formed between the first magnetic steel groove (12) and the second magnetic steel groove (13), and alpha is more than or equal to 145 degrees and less than or equal to 151 degrees; the first auxiliary groove (21) is positioned between the magnetic pole center line and the first magnetic steel groove (12), the first auxiliary groove (21) comprises a first radial edge (211), a second radial edge (212), a third radial edge (213), a first circumferential edge (214), a second circumferential edge (215) and a third circumferential edge (216), the first radial edge (211), the second radial edge (212) and the third radial edge (213) are sequentially arranged at intervals from the center line of the magnetic pole to one side of the first magnetic steel slot (12), the first circumferential edge (214), the second circumferential edge (215) and the third circumferential edge (216) are sequentially arranged along the radial direction of the rotor iron core (11) at intervals, the first radial edge (211), the third circumferential edge (216), the second radial edge (212), the second circumferential edge (215), the third radial edge (213) and the first circumferential edge (214) are sequentially connected end to end; an included angle between the first radial edge (211) and the second radial edge (212) is a first included angle β a, an included angle between the second radial edge (212) and the third radial edge (213) is a second included angle β b, and β a ═ β b; and/or the diameter of the first positioning circle corresponding to the first circumferential side (214) is Da, the diameter of the second positioning circle corresponding to the second circumferential side (215) is Db, the diameter of the third positioning circle corresponding to the third circumferential side (216) is Dc, Da is 1.006Dd, Db is 1.011Dd, and Dc is 1.016 Dd.
2. An electric machine rotor according to claim 1, characterised in that the angle between the first radial edge (211) and the pole centre line is γ a, γ a ═ 21 α/1480, and/or β a ═ β b ═ 4 γ a/21.
3. An electric machine rotor according to claim 2, characterized in that a second auxiliary slot (22) is also configured on the rotor core (11) in the sector ring area (14), the second auxiliary slot (22) being between the pole centre line and the second magnet steel slot (13).
4. An electric machine rotor, according to claim 3, characterized in that said second auxiliary groove (22) comprises a fourth radial edge (221), a fifth radial edge (222), a sixth radial edge (223), a fourth circumferential edge (224), a fifth circumferential edge (225), a sixth circumferential edge (226), the fourth radial edge (221), the fifth radial edge (222) and the sixth radial edge (223) are sequentially arranged at intervals from the center line of the magnetic pole to one side of the second magnetic steel slot (13), the fourth circumferential edge (224), the fifth circumferential edge (225) and the sixth circumferential edge (226) are sequentially arranged along the radial direction of the rotor iron core (11) at intervals, the fourth radial edge (221), the sixth circumferential edge (226), the sixth radial edge (223), the fifth circumferential edge (225), the fifth radial edge (222) and the fourth circumferential edge (224) are sequentially connected end to end.
5. An electric machine rotor, according to claim 4, characterized in that the angle between said fourth radial edge (221) and said fifth radial edge (222) is a first angle wa, the angle between said fifth radial edge (222) and said sixth radial edge (223) is a second angle wb, wa ═ wb; and/or the diameter of a fourth positioning circle corresponding to the fourth circumferential side (224) is De, the diameter of a fifth positioning circle corresponding to the fifth circumferential side (225) is Df, the diameter of a sixth positioning circle corresponding to the sixth circumferential side (226) is Dg, De is 1.087Dd, Df is 1.094Dd, and Dg is 1.101 Dd.
6. An electric machine rotor according to claim 5, characterised in that the fourth radial edge (221) has an angle γ b with the pole centre line of 121 α/1480 and/or β a β b 4 γ a/121.
7. An electric machine rotor as claimed in claim 6, characterized in that Dw-156.6 mm, Dd-140 mm and α -148 °.
8. An electric machine comprising a machine rotor, characterized in that the machine rotor is a machine rotor according to any one of claims 1-7.
9. An automobile comprising a drive motor, wherein the drive motor is the motor of claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110168368.9A CN112910133B (en) | 2021-02-07 | 2021-02-07 | Motor rotor, motor, car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110168368.9A CN112910133B (en) | 2021-02-07 | 2021-02-07 | Motor rotor, motor, car |
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| Publication Number | Publication Date |
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| CN112910133A CN112910133A (en) | 2021-06-04 |
| CN112910133B true CN112910133B (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110168368.9A Active CN112910133B (en) | 2021-02-07 | 2021-02-07 | Motor rotor, motor, car |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113949183B (en) * | 2021-10-15 | 2023-12-29 | 浙江中车尚驰电气有限公司 | Rotor punching sheet, rotor and motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001339922A (en) * | 2000-05-24 | 2001-12-07 | Toshiba Corp | Permanent-magnet reluctance rotating electric machine |
| CN110401282A (en) * | 2019-08-02 | 2019-11-01 | 珠海格力电器股份有限公司 | Rotor assembly and alternating-pole motor |
| CN111224486A (en) * | 2020-03-27 | 2020-06-02 | 广东金霸智能科技股份有限公司 | High-reluctance permanent magnet synchronous rotor structure of new energy automobile driving motor |
| CN111711292A (en) * | 2020-07-24 | 2020-09-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure, motor and compressor |
| CN111864940A (en) * | 2020-07-24 | 2020-10-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Core structure, rotor assembly, motor and compressor |
-
2021
- 2021-02-07 CN CN202110168368.9A patent/CN112910133B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001339922A (en) * | 2000-05-24 | 2001-12-07 | Toshiba Corp | Permanent-magnet reluctance rotating electric machine |
| CN110401282A (en) * | 2019-08-02 | 2019-11-01 | 珠海格力电器股份有限公司 | Rotor assembly and alternating-pole motor |
| CN111224486A (en) * | 2020-03-27 | 2020-06-02 | 广东金霸智能科技股份有限公司 | High-reluctance permanent magnet synchronous rotor structure of new energy automobile driving motor |
| CN111711292A (en) * | 2020-07-24 | 2020-09-25 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotor structure, motor and compressor |
| CN111864940A (en) * | 2020-07-24 | 2020-10-30 | 珠海格力节能环保制冷技术研究中心有限公司 | Core structure, rotor assembly, motor and compressor |
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