CN202142926U - Motor rotor and motor with same - Google Patents
Motor rotor and motor with same Download PDFInfo
- Publication number
- CN202142926U CN202142926U CN201120284938U CN201120284938U CN202142926U CN 202142926 U CN202142926 U CN 202142926U CN 201120284938 U CN201120284938 U CN 201120284938U CN 201120284938 U CN201120284938 U CN 201120284938U CN 202142926 U CN202142926 U CN 202142926U
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Abstract
The utility model provides a motor rotor and a motor with the same. The motor rotor comprises an iron core and a plurality of groups of permanent magnets arranged inside the iron core. A plurality of groups of installing grooves are arranged on the iron core along the circumferential direction of the iron core. Each group of installing grooves comprise two or more than two installing grooves arranged in the radial direction of the iron core discontinuously. Each group of permanent magnets are embedded into each installing groove of each group of installing grooves correspondingly. The motor comprises the motor rotor. The motor rotor and the motor with the motor rotor improve magnetic reluctance torque, thereby improving motor output torque and motor efficiency. In addition, rare earth permanent magnets are not required to improve motor efficiency, and usage quantity of rare earth is reduced, thereby on the one hand, saving energy and relieving environment burden, and on the other hand, reducing cost and improving competitiveness of products.
Description
Technical field
The utility model relates to electric motors, more specifically, relates to a kind of motor rotor and has its motor.
Background technology
Permanent magnet synchronous motor (IPM) is a kind ofly inboard to place one deck permanent magnet at rotor, mainly utilize permanent-magnet torque, reluctance torque to be auxiliary motor.
The composite formula of reluctance torque and permanent-magnet torque is following: T=mp (L
q-L
d) i
di
q+ mp ψ
PMi
q
Wherein, T is a motor output torque, improves the value of T, can improve motor performance; First behind the T in the equality is reluctance torque, and second is permanent-magnet torque; ψ
PMThe maximum of the rotor coupling magnetic flux that produces for motor permanent magnet, m is the number of phases of stator conductors, L
d, L
qBe respectively d axle and q axle inductance, wherein the d axle refers to and the axle of main pole dead in line, and the q axle refers to the axle with the main pole axis normal, wherein vertically refer to electrical degree; i
d, i
qBe respectively the component of armature supply on d axle, q direction of principal axis.
Mainly improve motor performance through the performance that improves permanent magnet in the prior art, promptly improve the value of synthetic torque through the way that improves permanent-magnet torque, and then improve motor efficiency, common way is exactly built-in rare-earth permanent magnet.But because rare earth is non-renewable resources, and costs an arm and a leg, so this kind motor is used widely and is restricted.In addition, only improve motor performance, also can't satisfy an urgent demand of further raising motor efficiency by improving permanent magnet performance.
The utility model content
Thereby the utility model purpose is to provide a kind of improves the motor that electric efficiency can reduce the motor rotor of rare-earth permanent magnet consumption and have it through improving reluctance torque.
An aspect according to the utility model; A kind of motor rotor is provided; Comprise the permanent magnet inner unshakable in one's determination with being located at iron core; Upper edge unshakable in one's determination circumferential direction unshakable in one's determination is provided with many group mounting grooves, and every group of mounting groove comprises two or more mounting grooves that is interrupted setting in the radial direction at iron core; Permanent magnet is many groups, and each permanent magnet in every group of permanent magnet embeds in each mounting groove of every group of mounting groove accordingly.
Further; Comprise first mounting groove and second mounting groove in every group of mounting groove; The permanent magnet that embeds in first mounting groove and second mounting groove is respectively first permanent magnet and second permanent magnet; Each permanent magnet in every group of permanent magnet is being T along the thickness sum on the direction of the line of symmetry of permanent magnet, and each permanent magnet is along on the direction of the line of symmetry of permanent magnet being g apart from sum, then:
Further; Comprise first mounting groove, second mounting groove and the 3rd mounting groove in every group of mounting groove; The permanent magnet that embeds in first mounting groove, second mounting groove and the 3rd mounting groove is respectively first permanent magnet, second permanent magnet and the 3rd permanent magnet; It is T that each permanent magnet in every group of permanent magnet is deposited along the thickness sum on the direction of the line of symmetry of permanent magnet; Each permanent magnet is deposited along on the direction of the line of symmetry of permanent magnet being g apart from sum, then:
Further, has the space between the two ends of the mounting groove of the two ends of each permanent magnet and its embedding.
Further, fill non-magnetic conductive media in the space between the two ends of the two ends of permanent magnet and mounting groove.
Further, permanent magnet perpendicular to the interior thickness of the cross section on the axis of rotor more than or equal to its two-end thickness.
Further, permanent magnet is being a rectangle perpendicular to the shape of cross section on the axis of rotor.
Further, mounting groove is being the U font perpendicular to the cross sectional shape on the axis of rotor.
Further, being included in perpendicular to the cross section on the axis of rotor in every group of permanent magnet is the permanent magnet of arc.
Further, each permanent magnet in every group of permanent magnet is curved surfaces near the surface of rotor center radially along rotor.
Further, each permanent magnet in every group of permanent magnet is the permanent magnet that cross section is an arc.
Further, in every group of permanent magnet, be the plane along the surface that radially is positioned at outermost permanent magnet of rotor away from rotor center, be curved surfaces near the surface of rotor center.
Further, in every group of permanent magnet, the curved surfaces of each permanent magnet is towards rotor center protruding.
Further, in every group of permanent magnet, the curved surfaces radian the closer to rotor center in the curved surfaces of each permanent magnet is big more.
An aspect according to the utility model also provides a kind of motor, comprises aforesaid motor rotor.
Adopt the motor rotor of the utility model and have its motor; Upper edge unshakable in one's determination circumferential direction unshakable in one's determination is provided with many group mounting grooves; Every group of mounting groove comprises two or more mounting grooves that is interrupted setting in the radial direction at iron core, and each permanent magnet of organizing in the permanent magnet embeds in each mounting groove of every group of mounting groove accordingly.Because the d axle has been placed the multilayer permanent magnet, and the magnetic resistance of permanent magnet itself is very big, and is suitable with air permeability, so the inductance L on the d direction of principal axis
dLess, and the q direction of principal axis is because iron core itself has higher magnetic permeability, so q axle inductance L
qBigger, therefore improve the reluctance torque of motor rotor, thereby improved motor efficiency, need not to use the method that increases the rare-earth permanent magnet consumption, thereby reduced the rare earth consumption.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide the further understanding to the utility model, and illustrative examples of the utility model and explanation thereof are used to explain the utility model, do not constitute the improper qualification to the utility model.In the accompanying drawings:
Fig. 1 is the structural representation according to first embodiment of the engine rotor of the utility model;
Fig. 2 is the structural representation according to second embodiment of the engine rotor of the utility model;
Fig. 3 is the structural representation according to the 3rd embodiment of the engine rotor of the utility model;
Fig. 4 is according to the thickness of the permanent magnet of first embodiment of the engine rotor of the utility model and the sketch map at the interval between the permanent magnet;
Fig. 5 is according to the thickness of the permanent magnet of second embodiment of the engine rotor of the utility model and the sketch map at the interval between the permanent magnet;
Fig. 6 is the sketch map that concerns according to the difference in inductance of the d axle of first embodiment of the engine rotor of the utility model and q axle and permanent magnet thickness and permanent magnet interval;
Fig. 7 is the sketch map that concerns according to the difference in inductance of the d axle of second embodiment of the engine rotor of the utility model and q axle and permanent magnet thickness and permanent magnet interval; And
Fig. 8 is the magnetic flux distribution design sketch according to first embodiment of the utility model.
Embodiment
Below with reference to accompanying drawing and combine embodiment to specify the utility model.
First embodiment of engine rotor according to the utility model as shown in Figure 1; Motor rotor comprises iron core 10 and the permanent magnet 20 of being located at 10 inside unshakable in one's determination; The circumferential direction of 10 upper edges unshakable in one's determination 10 unshakable in one's determination is provided with many group mounting grooves 30, and every group of mounting groove 30 comprises two or more mounting grooves that is interrupted setting in the radial direction 30 at iron core 10; Permanent magnet 20 is many groups, and each permanent magnet 20 in every group of permanent magnet 20 embeds in each mounting groove 30 of every group of mounting groove 30 accordingly.
The iron core 10 of the engine rotor among Fig. 1 is overrided to form by silicon steel plate and has necessarily folded high, and the axle center with unshakable in one's determination 10 is the center of circle and along its circumferencial direction 6 groups of mounting grooves 30 that evenly distributed, and every group of mounting groove 30 comprises the mounting groove 30 of 2 layers of arc again.The d axle of engine rotor and q axle are shown in figure, and mounting groove 30 is restrained successively along the d direction of principal axis and diminished.In mounting groove 30, put into permanent magnet 20, require same group of interior permanent magnet 20 to be same polarity towards the peripheral direction of engine rotor during placement, for example shown in Fig. 1, two-layer permanent magnet all shows the S utmost point on the d direction of principal axis; Require the magnetic of two groups of adjacent permanent magnets 20 opposite simultaneously, 6 groups of permanent magnets 20 externally along the circumferential direction alternately distribute according to the NS utmost point.Owing to placed multilayer permanent magnet 20 on the d direction of principal axis, and the magnetic resistance of permanent magnet 20 itself is very big, and is suitable with air permeability, therefore the inductance L on the d direction of principal axis
dLess, and the q direction of principal axis is because iron core 10 itself has higher magnetic permeability, so the inductance L on the q direction of principal axis
qBigger, therefore improve the reluctance torque of motor rotor, thereby improved motor output torque, also just improved motor efficiency.There has been this approach to improve motor efficiency, can have substituted through the increase rare-earth permanent magnet and improve the method for motor efficiency, thereby reduce the rare earth consumption; Practiced thrift the energy on the one hand; Alleviate environmental pressure, reduced cost on the other hand, promoted product competitiveness.
In the present embodiment, as shown in Figure 1, have the space between the two ends of the two ends of each permanent magnet 20 and the mounting groove of its embedding 30.Preferably, fill non-magnetic conductive media in the space between the two ends of the two ends of permanent magnet 20 and mounting groove 30.
As shown in Figure 1, being included in perpendicular to the cross section on the axis of rotor in every group of permanent magnet 20 is the permanent magnet 20 of arc, each permanent magnet 20 in every group of permanent magnet 20 be curved surfaces radially along rotor near the surface of rotor center.In the present embodiment, each permanent magnet 20 in every group of permanent magnet 20 is the permanent magnet that cross section is an arc, also is the arc that is shaped as uniform thickness of permanent magnet 20.The permanent magnet 20 of arc is slightly shorter than mounting groove 30, and permanent magnet 20 is inserted the space that mounting groove 30 backs are all left at the both ends of permanent magnet 20, wherein can fill air or other non-magnetic media.
As shown in Figure 4; In first embodiment of motor rotor; Comprise in every group of mounting groove 30 away from first mounting groove of rotor center with near second mounting groove of rotor center; The permanent magnet 20 that embeds in first mounting groove and second mounting groove is respectively first permanent magnet and second permanent magnet; Each permanent magnet 20 in every group of permanent magnet 20 is being T along the thickness sum on the direction of the line of symmetry of permanent magnet 20, and each permanent magnet 20 is along on the direction of the line of symmetry of permanent magnet 20 being g apart from sum, and then:
is as shown in Figure 8; When value satisfies above-mentioned formula; Adjacent 2 layers of magnet steel interchannel magnetic flux distribution are intensive, effectively utilized q axle magnetic circuit, increased the torque output of motor.
Specifically; On the cross section of the axial direction of rotor; The longest edge of first permanent magnet and second permanent magnet is respectively first longest edge and second longest edge; Distance with between the line of the geometric center of first longest edge any point to first longest edge and first longest edge and its relative edge's the intersection point is the thickness of first permanent magnet, is the thickness of second permanent magnet with the distance between the line of the geometric center of second longest edge any point to second longest edge and second longest edge and its relative edge's the intersection point.Geometric center with the long limit among two relative edges of first permanent magnet and second permanent magnet is the distance between first permanent magnet and second permanent magnet to the distance between two relative edges' of first permanent magnet and second permanent magnet the intersection point.Maximum ga(u)ge with first permanent magnet and second permanent magnet is respectively T1 and T2, and the ultimate range between first permanent magnet and second permanent magnet is g1.
In the present embodiment, each permanent magnet 20 is at the maximum ga(u)ge that is permanent magnet 20 along the thickness on the direction of the line of symmetry of permanent magnet 20, so T=T1+T2.Owing in every group two permanent magnets 20 are arranged in the present embodiment, therefore the ultimate range g1 between first permanent magnet and second permanent magnet equal each permanent magnet 20 along on the direction of the line of symmetry of permanent magnet 20 apart from sum g, i.e. g=g1.
According to the experimental test data, draw as the difference in inductance of the d axle of the engine rotor of first embodiment of Fig. 6 and q axle and permanent magnet thickness and permanent magnet at interval concern sketch map, when g satisfies with the ratio of T
The time, obtain bigger L
d-L
qValue, thus motor output torque improved, also just improved motor efficiency.
Preferably,
Second embodiment of engine rotor according to the utility model as shown in Figure 2, the axle center with unshakable in one's determination 10 is the center of circle and along its circumferencial direction 4 groups of mounting grooves 30 that evenly distributed, every group of mounting groove 30 comprises the mounting groove 30 of 3 layers of arc again.
In every group of permanent magnet 20; The surface away from rotor center that radially is positioned at outermost permanent magnet 20 along rotor is the plane; Surface near rotor center is a curved surfaces, remaining each permanent magnet 20 be curved surfaces away from the surface of rotor center and near the surface of rotor center.In every group of permanent magnet 20, the curved surfaces of each permanent magnet 20 is all protruding towards the rotor center direction.In every group of permanent magnet 20; Curved surfaces radian the closer to rotor center in the curved surfaces of each permanent magnet is big more, therefore, and in the present embodiment; Permanent magnet 20 perpendicular to the interior thickness of the cross section on the axis of rotor greater than its two-end thickness; Be that permanent magnet 20 is the arc of gradual change, its center thickness is maximum, and two-end thickness reduces gradually.
The 3rd embodiment of engine rotor according to the utility model as shown in Figure 3, the axle center with unshakable in one's determination 10 is the center of circle and along its circumferencial direction 8 groups of mounting grooves 30 that evenly distributed, every group of mounting groove 30 comprises the mounting groove 30 of 2 layers of rectangle again.
Because arc-shaped permanent magnet receives the influence of material bigger aspect moulding; And the finishing step in moulding later stage is many; And the moulding of rectangle permanent magnet and manufacturing procedure are all simple relatively, therefore adopt the rectangle permanent magnet to enhance productivity, and highly versatile; Ground floor permanent magnet and second layer permanent magnet can be general each other on the rotor, therefore adopt square permanent magnet to reduce production costs; The U-shaped structure of this design simultaneously is because the space is left in the both sides of magnet steel; Can in the middle of this space, be relatively easy to insert the square permanent magnet of different size; Play the effect that motor performance is adjusted and need can not realize the generalization of rotor structure with the rotor grooved that renews.
As shown in Figure 5; In second embodiment of motor rotor; Comprise in every group of mounting groove 30 from away from rotor center successively near first mounting groove, second mounting groove and the 3rd mounting groove of rotor center; The permanent magnet 20 that embeds in first mounting groove, second mounting groove and the 3rd mounting groove is respectively first permanent magnet, second permanent magnet and the 3rd permanent magnet; Each permanent magnet 20 in every group of permanent magnet 20 is being T along the thickness sum on the direction of the line of symmetry of permanent magnet 20; Each permanent magnet is along on the direction of the line of symmetry of permanent magnet 20 being g apart from sum, then:
Specifically; In the radial direction along cross section of rotor; The longest edge of first permanent magnet, second permanent magnet and the 3rd permanent magnet is respectively first longest edge, second longest edge and the 3rd longest edge; Distance with between the line of the geometric center of first longest edge any point to first longest edge and first longest edge and its relative edge's the intersection point is the thickness of first permanent magnet; Distance with between the line of the geometric center of second longest edge any point to second longest edge and second longest edge and its relative edge's the intersection point is the thickness of second permanent magnet, is the thickness of the 3rd permanent magnet with the distance between the line of any point on geometric center to the three longest edges of the 3rd longest edge and the 3rd longest edge and its relative edge's the intersection point.Geometric center with the long limit among two relative edges of first permanent magnet and second permanent magnet is the distance between first permanent magnet and second permanent magnet to the distance between two relative edges' of first permanent magnet and second permanent magnet the intersection point, is the distance between second permanent magnet and the 3rd permanent magnet with the geometric center on the long limit among two relative edges of second permanent magnet and the 3rd permanent magnet to the distance between two relative edges' of second permanent magnet and the 3rd permanent magnet the intersection point.
Maximum ga(u)ge with first permanent magnet, second permanent magnet and the 3rd permanent magnet is respectively T1, T2 and T3, and the ultimate range between first permanent magnet and second permanent magnet is g1, and the ultimate range between second permanent magnet and the 3rd permanent magnet is g2.As shown in Figure 5, in the present embodiment, each permanent magnet 20 is at the maximum ga(u)ge that is each permanent magnet 20 along the thickness on the direction of the line of symmetry of permanent magnet 20, and promptly each permanent magnet 20 maximum ga(u)ge sums in every group of mounting groove 30 are T=T1+T2+T3; Each permanent magnet 20 is being the ultimate range between each permanent magnet 20, i.e. g=g1+g2 along the distance on the direction of the line of symmetry of permanent magnet 20.
As the difference in inductance of the d axle of the engine rotor of second embodiment of Fig. 7 and q axle and permanent magnet thickness and permanent magnet at interval concern sketch map, when g satisfies with the ratio of T
The time, obtain bigger L
d-L
qValue, thus motor output torque improved, also just improved motor efficiency.
The utility model also provides a kind of motor, comprises aforesaid motor rotor.
The motor of the utility model, through limiting the relation between permanent magnet thickness and its gap, the utilization that has improved reluctance torque has improved efficiency of motor.The motor of the utility model can be applied in compressor of air conditioner, electric motor car and the fan system.
From above description, can find out that the utility model the above embodiments have realized following technique effect:
The motor rotor of the utility model and have its motor has improved the reluctance torque of motor rotor, thereby has improved motor output torque, has also just improved motor efficiency.There has been this method to improve motor efficiency, can have substituted through the increase rare-earth permanent magnet and improve the method for motor efficiency, thereby reduce the rare earth consumption; Practiced thrift the energy on the one hand; Alleviate environmental pressure, reduced cost on the other hand, promoted product competitiveness.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (15)
1. a motor rotor comprises iron core (10) and is located at the inner permanent magnet (20) of said iron core (10), it is characterized in that,
The circumferential direction of the said iron core in said iron core (10) upper edge (10) is provided with many group mounting grooves (30), and every group of said mounting groove (30) comprises two or more mounting grooves that is interrupted setting in the radial direction (30) at said iron core (10);
Said permanent magnet (20) is many groups, and each permanent magnet (20) in every group of said permanent magnet (20) embeds in each said mounting groove (30) of every group of mounting groove (30) accordingly.
2. motor rotor according to claim 1; It is characterized in that; Comprise first mounting groove and second mounting groove in every group of said mounting groove (30); The permanent magnet (20) that embeds in said first mounting groove and said second mounting groove is respectively first permanent magnet and second permanent magnet; Each permanent magnet (20) in every group of said permanent magnet (20) is being T along the thickness sum on the direction of line of symmetry of said permanent magnet (20), and each permanent magnet (20) is along on the direction of the line of symmetry of said permanent magnet (20) being g apart from sum, then:
3. motor rotor according to claim 1; It is characterized in that; Comprise first mounting groove, second mounting groove and the 3rd mounting groove in every group of said mounting groove (30); The permanent magnet (20) that embeds in said first mounting groove, said second mounting groove and said the 3rd mounting groove is respectively first permanent magnet, second permanent magnet and the 3rd permanent magnet; Each permanent magnet (20) in every group of said permanent magnet (20) is being T along the thickness sum on the direction of line of symmetry of said permanent magnet (20), and each permanent magnet (20) is along on the direction of the line of symmetry of said permanent magnet (20) being g apart from sum, then:
4. according to each described motor rotor in the claim 1 to 3, it is characterized in that having the space between the two ends of the said mounting groove (30) of the two ends of each said permanent magnet (20) and its embedding.
5. motor rotor according to claim 4 is characterized in that, fills non-magnetic conductive media in the space between the two ends of the two ends of said permanent magnet (20) and said mounting groove (30).
6. according to each described motor rotor in the claim 1 to 3, it is characterized in that, said permanent magnet (20) perpendicular to the interior thickness of the cross section on the axis of said rotor more than or equal to its two-end thickness.
7. motor rotor according to claim 6 is characterized in that, said permanent magnet (20) is being a rectangle perpendicular to the shape of cross section on the axis of said rotor.
8. motor rotor according to claim 7 is characterized in that, said mounting groove (30) is being the U font perpendicular to the cross sectional shape on the axis of said rotor.
9. motor rotor according to claim 6 is characterized in that, being included in perpendicular to the cross section on the axis of said rotor in every group of said permanent magnet (20) is the permanent magnet of arc.
10. motor rotor according to claim 9 is characterized in that, the said rotor in edge of each permanent magnet (20) in every group of said permanent magnet (20) be curved surfaces radially near the surface of rotor center.
11. motor rotor according to claim 9 is characterized in that, each permanent magnet (20) in every group of said permanent magnet (20) is the permanent magnet that said cross section is an arc.
12. motor rotor according to claim 9; It is characterized in that; In every group of said permanent magnet (20), being the plane along the surface away from rotor center that radially is positioned at outermost said permanent magnet (20) of said rotor, is curved surfaces near the surface of rotor center.
13. motor rotor according to claim 9 is characterized in that, in every group of said permanent magnet (20), the curved surfaces of each said permanent magnet (20) is towards rotor center protruding.
14. motor rotor according to claim 9 is characterized in that, in every group of said permanent magnet (20), the curved surfaces radian the closer to rotor center in the curved surfaces of each said permanent magnet (20) is big more.
15. a motor comprises each described motor rotor in the claim 1 to 14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120284938U CN202142926U (en) | 2011-08-05 | 2011-08-05 | Motor rotor and motor with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120284938U CN202142926U (en) | 2011-08-05 | 2011-08-05 | Motor rotor and motor with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202142926U true CN202142926U (en) | 2012-02-08 |
Family
ID=45553964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120284938U Expired - Lifetime CN202142926U (en) | 2011-08-05 | 2011-08-05 | Motor rotor and motor with same |
Country Status (1)
| Country | Link |
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| CN (1) | CN202142926U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684342A (en) * | 2012-06-04 | 2012-09-19 | 浙江西子富沃德电机有限公司 | Built-in permanent magnet motor rotor and permanent magnet motor with rotor |
| CN102761183A (en) * | 2011-08-05 | 2012-10-31 | 珠海格力电器股份有限公司 | Motor rotor and motor with motor rotor |
| CN102761222A (en) * | 2012-03-05 | 2012-10-31 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent-magnet-aided synchronous reluctance motor, rotor of motor and mounting method of motor |
| CN102769366A (en) * | 2012-03-05 | 2012-11-07 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet assisted synchronous reluctance motor, motor installation method and compressor with permanent magnet assisted synchronous reluctance motor |
| CN102801236A (en) * | 2012-03-05 | 2012-11-28 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet auxiliary synchronous reluctance motor and rotor thereof, and assembly method for motor |
| CN103572551A (en) * | 2012-08-08 | 2014-02-12 | 日立空调·家用电器株式会社 | Washing dryer and motor for driving washing dryer fan |
| CN106374654A (en) * | 2015-07-22 | 2017-02-01 | 奥迪股份公司 | Partially assembled motor |
| USD960086S1 (en) | 2017-07-25 | 2022-08-09 | Milwaukee Electric Tool Corporation | Battery pack |
| US11780061B2 (en) | 2019-02-18 | 2023-10-10 | Milwaukee Electric Tool Corporation | Impact tool |
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2011
- 2011-08-05 CN CN201120284938U patent/CN202142926U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013020312A1 (en) * | 2011-08-05 | 2013-02-14 | 珠海格力电器股份有限公司 | Motor rotor and motor having same |
| CN102761183A (en) * | 2011-08-05 | 2012-10-31 | 珠海格力电器股份有限公司 | Motor rotor and motor with motor rotor |
| US9502934B2 (en) | 2011-08-05 | 2016-11-22 | Gree Electric Appliances, Inc. Of Zhuhai | Motor rotor and motor having same |
| CN102769366B (en) * | 2012-03-05 | 2013-08-14 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet assisted synchronous reluctance motor, motor installation method and compressor with permanent magnet assisted synchronous reluctance motor |
| CN102801236A (en) * | 2012-03-05 | 2012-11-28 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet auxiliary synchronous reluctance motor and rotor thereof, and assembly method for motor |
| CN102769366A (en) * | 2012-03-05 | 2012-11-07 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet assisted synchronous reluctance motor, motor installation method and compressor with permanent magnet assisted synchronous reluctance motor |
| CN102761222A (en) * | 2012-03-05 | 2012-10-31 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent-magnet-aided synchronous reluctance motor, rotor of motor and mounting method of motor |
| CN102684342A (en) * | 2012-06-04 | 2012-09-19 | 浙江西子富沃德电机有限公司 | Built-in permanent magnet motor rotor and permanent magnet motor with rotor |
| CN103572551A (en) * | 2012-08-08 | 2014-02-12 | 日立空调·家用电器株式会社 | Washing dryer and motor for driving washing dryer fan |
| CN106374654A (en) * | 2015-07-22 | 2017-02-01 | 奥迪股份公司 | Partially assembled motor |
| USD960086S1 (en) | 2017-07-25 | 2022-08-09 | Milwaukee Electric Tool Corporation | Battery pack |
| US11462794B2 (en) | 2017-07-25 | 2022-10-04 | Milwaukee Electric Tool Corporation | High power battery-powered system |
| US11476527B2 (en) | 2017-07-25 | 2022-10-18 | Milwaukee Electric Tool Corporation | High power battery-powered system |
| US11780061B2 (en) | 2019-02-18 | 2023-10-10 | Milwaukee Electric Tool Corporation | Impact tool |
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