CN106712359A - Winding protection device and motor with same - Google Patents

Winding protection device and motor with same Download PDF

Info

Publication number
CN106712359A
CN106712359A CN201710038456.0A CN201710038456A CN106712359A CN 106712359 A CN106712359 A CN 106712359A CN 201710038456 A CN201710038456 A CN 201710038456A CN 106712359 A CN106712359 A CN 106712359A
Authority
CN
China
Prior art keywords
winding
installation portion
stopper section
protector
winding protector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710038456.0A
Other languages
Chinese (zh)
Inventor
姚俊
伍光祥
漆凌君
杨文德
陈东锁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Zhuhai Kaibang Motor Manufacture Co Ltd
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Zhuhai Kaibang Motor Manufacture Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gree Electric Appliances Inc of Zhuhai, Zhuhai Kaibang Motor Manufacture Co Ltd filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN201710038456.0A priority Critical patent/CN106712359A/en
Publication of CN106712359A publication Critical patent/CN106712359A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/46Fastening of windings on the stator or rotor structure
    • H02K3/48Fastening of windings on the stator or rotor structure in slots
    • H02K3/487Slot-closing devices
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K3/00Details of windings
    • H02K3/46Fastening of windings on the stator or rotor structure

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

The invention provides a winding protection device and a motor with the same. The winding protector comprises an installation part, wherein an accommodating cavity is formed in the installation part and is used for accommodating a winding joint. The winding protection device is arranged on the stator iron core, and the winding joint is placed in the accommodating cavity, so that the problem that the performance of the motor is influenced due to the fact that the winding joint is exposed is effectively solved, and the reliability of the motor with the winding protection device is improved.

Description

Winding protector and the motor with it
Technical field
The present invention relates to motor device technical field, in particular to a kind of winding protector and the electricity with it Machine.
Background technology
In the prior art, due to plastic packaged motor stator need to by BMC high temperature, high-pressure injection moulding, when winding copper factor is higher or When having loose ends, winding is easy to be flushed to by BMC the place of naked part in injection moulding process so that winding is directly ridden on iron core And it is bad to cause motor pressure-resistant etc..Or winding is flushed to outside groove and causes stator inner circle to leak the situation of winding, reduce motor Qualification rate, indirectly increased cost.
In order to avoid the problem that prior art is present, in industry generally by copper factor control within the specific limits, but this The performance of motor is limited to a certain extent.Also there is part producer high in winding copper factor or twined using insulating tape when having loose ends Winding bonding core or inner circle leakage winding problem, but this mode are prevented around parcel winding can only manually be wound, and inefficiency takes Consumptive material.Further, the situation for also using slot wedge in case the sub- iron core inner circle of fastening leaks winding of the prior art, but, it is existing There is the slot wedge in technology not provide the function that protection is realized to winding joint, cause winding joint to expose easy open circuit, release Situations such as, have a strong impact on the performance of motor.
The content of the invention
It is a primary object of the present invention to provide a kind of winding protector and motor with it, to solve prior art The problem that middle winding joint exposes.
To achieve these goals, according to an aspect of the invention, there is provided a kind of winding protector, including:Peace Dress portion, offers accommodating chamber on installation portion, accommodating chamber is used to accommodate winding joint.
Further, winding protector also includes:Stopper section, stopper section is connected with installation portion.
Further, stopper section is multiple, and at least one of multiple stopper sections are hollow structure, hollow structure and receiving Chamber is connected.
Further, the cross section of stopper section is trapezoidal.
Further, stopper section includes:Backstop body, backstop body is connected with installation portion, is formed with backstop body Convex tendon.
Further, convex tendon extends along the length direction of backstop body.
Further, installation portion is in first annular structure, the direction protrusion where convex tendon towards rotor.
Further, radially transversal of the area of the cross section radially of convex tendon less than backstop body The area in face.
Further, the curved structure of installation portion, is provided with least one stopper section on installation portion.
Further, installation portion is multiple, and multiple installation portions are spliced into the second loop configuration.
Further, winding protector also includes:Protective plate, one end of protective plate is connected with installation portion, protective plate The other end away from installation portion set.
According to another aspect of the present invention, there is provided a kind of motor, including winding protector, winding protector is Above-mentioned winding protector.
Further, motor includes:Stator core, stator core has insulation framework mounting groove;Insulation framework, is arranged at In insulation framework mounting groove, insulation framework has holding tank, and winding protector is installed on stator core by installation portion, with The stopper section that making winding protector has is located in holding tank.
Further, a width of D1 of the backstop body of stopper section, a width of d1 of the notch of insulation framework, wherein, D1 > d1.
Further, a width of D2 of the convex tendon of stopper section, a width of d2 of the notch of insulation framework mounting groove, wherein, D2 > d2。
Apply the technical scheme of the present invention, the winding protector includes installation portion.Accommodating chamber is offered on installation portion.Its In, accommodating chamber is used to accommodate winding joint.The winding protector is arranged in stator core, and winding joint is positioned over In accommodating chamber, the problem that winding joint exposes and influences motor performance is efficiently avoid, improve and protect dress with the winding The reliability of the motor put.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, of the invention to show Meaning property and its illustrates, for explaining the present invention, not constitute inappropriate limitation of the present invention embodiment.In the accompanying drawings:
Fig. 1 shows the structural representation of the embodiment one of the embodiment of winding protector of the invention;
Fig. 2 shows the structural representation of the embodiment two of the embodiment of winding protector of the invention;
Fig. 3 shows the structural representation of the embodiment three of the embodiment of winding protector of the invention;
Fig. 4 shows the structural representation of the embodiment of the embodiment of motor of the invention;
Fig. 5 shows the cross section structure diagram of the motor in Fig. 1;
Mplifying structure schematic diagram at the A that Fig. 6 shows in Fig. 5.
Wherein, above-mentioned accompanying drawing is marked including the following drawings:
10th, installation portion;11st, accommodating chamber;20th, stopper section;21st, backstop body;22nd, convex tendon;30th, protective plate;31st, step down and lack Mouthful;40th, stator core;41st, insulation framework mounting groove;50th, insulation framework;51st, holding tank;60th, electrical cord assembly;70th, winding.
Specific embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative Be also intended to include plural form, additionally, it should be understood that, when in this manual use term "comprising" and/or " bag Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
It should be noted that term " first ", " in the description and claims of this application and above-mentioned accompanying drawing Two " it is etc. for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so using Term can exchange in the appropriate case, so that presently filed embodiment described herein for example can be with except herein Order beyond those of diagram or description is implemented.Additionally, term " comprising " and " having " and their any deformation, it is intended that Be cover it is non-exclusive include, for example, containing process, method, system, product or the equipment of series of steps or unit not Be necessarily limited to those steps or the unit clearly listed, but may include not list clearly or for these processes, side Method, product or other intrinsic steps of equipment or unit.
For the ease of description, space relative terms can be used herein, such as " ... on ", " ... top ", " in ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy The spatial relation levied.It should be appreciated that space relative terms are intended to comprising the orientation except device described in figure Outside different azimuth in use or operation.If for example, the device in accompanying drawing is squeezed, be described as " in other devices To be positioned as " under other devices or construction after the device of part or construction top " or " on other devices or construction " Side " or " under other devices or construction ".Thus, exemplary term " ... top " can include " ... top " and " in ... lower section " two kinds of orientation.The device can also other different modes positioning (being rotated by 90 ° or in other orientation), and And respective explanations are made to the relative description in space used herein above.
Now, the illustrative embodiments according to the application are more fully described with reference to the accompanying drawings.However, these are exemplary Implementation method can be implemented by many different forms, and should not be construed to be limited solely to embodiment party set forth herein Formula.It should be appreciated that thesing embodiments are provided so that disclosure herein is thoroughly and complete, and these are shown The design of example property implementation method is fully conveyed to those of ordinary skill in the art, in the accompanying drawings, for the sake of clarity, it is possible to expand The big thickness of layer and region, and make identical device is presented with like reference characters, thus they are retouched by omitting State.
With reference to shown in Fig. 1 to Fig. 6, a kind of embodiments in accordance with the present invention, there is provided winding protector.
Specifically, as shown in figure 1, the winding protector includes installation portion 10.Accommodating chamber 11 is offered on installation portion 10. Wherein, accommodating chamber 11 is used to accommodate winding joint.
In the present embodiment, the winding protector is arranged in stator core, and winding joint is positioned over receiving In chamber, the problem that winding joint exposes and influences motor performance is efficiently avoid, improve with the winding protector The reliability of motor.
Further, winding protector also includes stopper section 20.Stopper section 20 is connected with installation portion 10.Wherein, only Stopper 20 is used to prevent stator core inner circle from leaking winding.So setting can further improve the function of the winding protector, Improve the practicality of winding protector.
In order to improve the practicality of winding protector, stopper section 20 can be set to multiple.In multiple stopper sections 20 At least one be hollow structure, hollow structure is connected with accommodating chamber 11.So setting can either enable stopper section 20 Play the situation for preventing winding joint destroyed, while also reduce the materials used when stopper section 20 processes, reduce around Production cost is also reduced while the weight of group protector.
In order to further improve the practicality of winding protector, multiple stopper sections 20 are positioned apart from and positioned at installation The same side in portion 10.When winding protector is installed on motor stator, multiple stopper sections 20 are respectively positioned on stator core Holding tank is interior and corresponds.Winding can be so effectively prevented to expose from the inner circle of stator core.
Preferably, stopper section 20 is vertical with the plane where installation portion 10.So setting can be effectively improved winding Precision when protector is assembled with stator core.
As shown in Fig. 2 stopper section 20 includes backstop body 21.Backstop body 21 is connected with installation portion 10, backstop body Convex tendon 22 is formed with 21.The security and practicality of winding protector can so be further increasing.
Wherein, convex tendon 22 extends along the length direction of backstop body 21.Stopper section 20 can so be effectively increased Thickness is the intensity that increased stopper section.
As depicted in figs. 1 and 2, installation portion 10 be in first annular structure, convex tendon 22 towards installation portion 10 radial direction to It is projecting inward, i.e., the direction where rotor.So setting can be effectively prevented from the feelings that stator core inner circle occurs omission winding Condition, improves the reliability of the winding protector.
Preferably, horizontal stroke radially of the area of the cross section radially of convex tendon 22 less than backstop body 21 The area in section.So set and enable to backstop body 21 and the difference backstop of convex tendon 22 in different positions, form secondary stopping The effect of gear, increased the reliability of stopper section 20.Wherein, convex tendon 22 is wholely set to form stopper section with backstop body 21 20, and the cross section of stopper section 20 can set structure in echelon.
It is of course also possible to by the curved structure of installation portion 10.As shown in figure 3, be provided with least one on installation portion 10 stopping Stopper 20.The installation portion 10 of curved structure is arranged in stator core so that stopper section 20 is located at the holding tank of stator core Inside can equally play prevents winding from occurring to omit the problem in stator core inner circle.
Preferably, installation portion 10 is multiple, and multiple installation portions 10 are spliced into the second loop configuration.I.e. can be by combination Prevent from being installed on stator core, significantly reduce installation difficulty.
Winding protector also includes protective plate 30.One end of protective plate 30 is connected with installation portion 10, protective plate 30 The other end is set away from installation portion 10.So setting can effectively act as the effect of protecting motor power line.
In order to reduce the difficulty of power line installation, resigning breach 31 is offered on protective plate 30.
Winding protector in above-described embodiment can be also used for motor device technical field, i.e., of the invention another On the one hand, there is provided a kind of motor.The motor includes winding protector, and winding protector is the winding in above-described embodiment Protector.Wherein, the winding protector includes installation portion 10.Accommodating chamber 11 is offered on installation portion 10.Wherein, accommodating chamber 11 are used to accommodate winding joint.The winding protector is arranged in stator core, and winding joint is positioned over accommodating chamber It is interior, the problem that winding joint exposes and influences motor performance is efficiently avoid, improve the electricity with the winding protector The reliability of machine.
As shown in Figure 4 and Figure 5, motor includes stator core 40 and insulation framework 50.Stator core 40 has insulation framework Mounting groove 41.Insulation framework 50 is arranged in insulation framework mounting groove 41, and insulation framework 50 has holding tank 51, winding protection dress Put and be installed on stator core 40 by installation portion 10, so that the stopper section 20 that winding protector has is located at holding tank 51 It is interior.So can effectively by the winding backstop in stator core with avoid winding stator core inner circle occur omit or There is displacement or the phenomenon for releasing in winding during stator core is molded, and improves the dependable with function of the motor.
As shown in fig. 6, a width of D1 of the backstop body 21 of stopper section 20, a width of d1 of the notch of insulation framework 50, wherein, D1 > d1.So set and ensure that backstop body 21 is backstop in the notch of insulation framework 50 all the time.Further, only A width of D2 of the convex tendon 22 of stopper 20, a width of d2 of the notch of insulation framework mounting groove 41, wherein, D2 > d2.Energy is so set Enough guarantee convex tendon 22 is backstop in the notch of insulation framework mounting groove 41 all the time.By the way of dual backstop, Neng Gouyou Situations such as avoiding to effect winding generation omission, shift and release.
Specifically, the winding protector, easily occurs pressure-resistant when solution plastic packaging motor winding copper factor is high or has loose ends The bad problems such as winding are leaked with stator inner circle, the producible winding copper factor of plastic packaging motor is improved, and then is lifted plastic packaging motor and produce Moral character energy.
The winding protector has the advantages that simple structure, low production cost, easy to operate, production efficiency are high, while can Easily occur the bad problems such as pressure-resistant and stator inner circle leakage winding when effectively solution plastic packaging motor winding copper factor is high or has loose ends. Improve the qualification rate of motor product.This technique can realize automated production simultaneously, so that production cost is reduced, lifting product city Field competitiveness.The producible winding copper factor of plastic packaging motor is improved, and then lifts plastic packaging motor properties of product.
The winding protector is with several teeth portion i.e. stopper section 20 and grips portion's (peace between i.e. adjacent stopper section 20 Dress portion 10) connection slot wedge, slot wedge teeth portion is for " convex wedge shape " or trapezoidal, and slot wedge teeth portion Breadth Maximum D1 is more than insulation framework groove Mouthful width d1, minimum widith D2 are more than stator core notch width d2, so as to slot wedge teeth portion block completely stator core notch and Insulation framework notch, when preventing winding copper factor high or having loose ends, winding is rushed out in injection moulding process outside groove or bonding core is made Into bad.
Winding protector and combinations thereof stator and motor, the winding protector be a kind of slot wedge, including grip portion with Teeth portion;The combined stator part includes slot wedge, stator core, insulation framework, winding 70, electrical cord assembly 60.Motor include with Upper combined stator through BMC plastic packagings field frame assembly (not shown) and rotor assembly (not shown), it is specific as follows:
As shown in figure 1, winding protector is a kind of slot wedge, including portion and teeth portion are gripped, teeth portion is according to stator core slot point Cloth situation is regular to be distributed on the circumference in the portion of gripping.
As shown in Figure 4 and Figure 5, slot wedge teeth portion is " convex wedge shape " or trapezoidal, and slot wedge teeth portion Breadth Maximum D1 is more than insulation Skeleton width of rebate d1, minimum widith D2 is more than stator core notch width d2, so that slot wedge teeth portion blocks stator core completely Notch and insulation framework notch, when preventing winding copper factor high or having loose ends, winding is rushed out outside groove or takes in injection moulding process Iron core causes bad.
As shown in Fig. 2 several slot wedge teeth portion can be made into middle evacuation structure, form power line winding welding head and hold Chamber is received, for placing power line winding welding head;
As shown in Figure 3, it is also possible in power line winding welding head placed cavity along radian section one protective plate of design.By power line Separate with machine winding, prevent the lead for exposing plumb joint accommodating chamber from being contacted with machine winding and cause short-circuit (winding welding head May be jagged, easily puncture enamel-covered wire coat of paint).
As shown in figure 3, slot wedge can also make non-full circle type, simply one section of circular arc, slot wedge is gripped in portion by stator core Groove distribution situation is provided with several teeth portion.Wherein, either full-circle spray pattern is also non-full-circle spray pattern, and groove contract is all the base in combined stator Designed on plinth, can directly be inserted after winding electric machine winding and be assembled.
As shown in figure 4, stator module includes slot wedge, stator core, insulation framework, winding, electrical cord assembly.Combined stator The mode of production be by insulation framework assemble on stator core, secondly coiling winding, take second place again by slot wedge insert stator slot in, Finally electrical cord assembly is welded with winding the end of a thread, power line winding welding head is put into winding enamel-covered wire placed cavity.
Motor includes that the stator of combination of the above (is not drawn through the field frame assembly (not shown) and rotor assembly of BMC plastic packagings Go out).Groove contract is designed on the basis of combined stator, is directly inserted into the stator slot of assembling combination i.e. insulation framework peace Tankage 41.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair Change, equivalent, improvement etc., should be included within the scope of the present invention.

Claims (15)

1. a kind of winding protector, it is characterised in that including:
Installation portion (10), offers accommodating chamber (11) on the installation portion (10), the accommodating chamber (11) connects for accommodating winding Head.
2. winding protector according to claim 1, it is characterised in that the winding protector also includes:
Stopper section (20), the stopper section (20) is connected with the installation portion (10).
3. winding protector according to claim 2, it is characterised in that the stopper section (20) is multiple, Duo Gesuo At least one of stopper section (20) is stated for hollow structure, the hollow structure is connected with the accommodating chamber (11).
4. winding protector according to claim 2, it is characterised in that the cross section of the stopper section (20) is in ladder Shape.
5. the winding protector according to any one of claim 2 to 4, it is characterised in that stopper section (20) bag Include:
Backstop body (21), the backstop body (21) is connected with the installation portion (10), shape on the backstop body (21) Into there is convex tendon (22).
6. winding protector according to claim 5, it is characterised in that the convex tendon (22) is along the backstop body (21) length direction extends.
7. winding protector according to claim 5, it is characterised in that the installation portion (10) is in first annular knot Structure, direction protrusion of the convex tendon (22) towards where rotor.
8. winding protector according to claim 7, it is characterised in that the horizontal stroke radially of the convex tendon (22) Area of the area in section less than the cross section radially of the backstop body (21).
9. winding protector according to claim 1, it is characterised in that the curved structure of the installation portion (10), institute State and at least one stopper section (20) is provided with installation portion (10).
10. winding protector according to claim 9, it is characterised in that the installation portion (10) is multiple, Duo Gesuo State installation portion (10) and be spliced into the second loop configuration.
11. winding protectors according to claim 1, it is characterised in that the winding protector also includes:
Protective plate (30), one end of the protective plate (30) is connected with the installation portion (10), the protective plate (30) it is another One end is set away from the installation portion (10).
A kind of 12. motors, including winding protector, it is characterised in that the winding protector is in claim 1 to 11 Winding protector described in any one.
13. motors according to claim 12, it is characterised in that the motor includes:
Stator core (40), the stator core (40) is with insulation framework mounting groove (41);
Insulation framework (50), is arranged in the insulation framework mounting groove (41), and the insulation framework (50) is with holding tank (51), the winding protector is installed on the stator core (40) by the installation portion (10), so that the winding The stopper section (20) that protector has is in the holding tank (51).
14. motors according to claim 13, it is characterised in that the backstop body (21) of the stopper section (20) it is a width of D1, a width of d1 of the notch of the insulation framework (50), wherein, D1 > d1.
15. motor according to claim 13 or 14, it is characterised in that the convex tendon (22) of the stopper section (20) it is a width of D2, a width of d2 of the notch of the insulation framework mounting groove (41), wherein, D2 > d2.
CN201710038456.0A 2017-01-17 2017-01-17 Winding protection device and motor with same Pending CN106712359A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710038456.0A CN106712359A (en) 2017-01-17 2017-01-17 Winding protection device and motor with same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710038456.0A CN106712359A (en) 2017-01-17 2017-01-17 Winding protection device and motor with same

Publications (1)

Publication Number Publication Date
CN106712359A true CN106712359A (en) 2017-05-24

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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN107742928A (en) * 2017-11-22 2018-02-27 珠海格力电器股份有限公司 Stator core assembly, mounting method, motor, compressor and air conditioner
CN108448776A (en) * 2018-05-16 2018-08-24 珠海格力电器股份有限公司 Magnetic suspension bearing winding fixing structure, axial magnetic suspension bearing and assembling method
CN110266138A (en) * 2019-07-15 2019-09-20 日本电产凯宇汽车电器(江苏)有限公司 A kind of motor wire outlet structure
CN111247718A (en) * 2018-02-27 2020-06-05 宝马股份公司 Electric machine and vehicle having such an electric machine

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CN105356638A (en) * 2015-12-02 2016-02-24 珠海凯邦电机制造有限公司 Winding protector and have its stator module and motor
DE202016004885U1 (en) * 2016-08-10 2016-08-22 Zhejiang Linix Motor Co., Ltd. DC motor
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Publication number Priority date Publication date Assignee Title
JPH1155885A (en) * 1997-08-05 1999-02-26 Hitachi Ltd Motor-driven blower and electric cleaner using the same
JP2008245403A (en) * 2007-03-27 2008-10-09 Nissan Motor Co Ltd Motor
US20130320800A1 (en) * 2012-06-01 2013-12-05 Fanuc Corporation Coil fixing device for fixing coil to electric motor, and electric motor having the coil fixing device
CN104734393A (en) * 2013-12-24 2015-06-24 重庆凯邦电机有限公司 Motor protector and have its motor
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107742928A (en) * 2017-11-22 2018-02-27 珠海格力电器股份有限公司 Stator core assembly, mounting method, motor, compressor and air conditioner
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CN111247718A (en) * 2018-02-27 2020-06-05 宝马股份公司 Electric machine and vehicle having such an electric machine
US11336142B2 (en) 2018-02-27 2022-05-17 Bayerische Motoren Werke Aktiengesellschaft Electrical machine including closure walls for winding slots
CN111247718B (en) * 2018-02-27 2023-01-17 宝马股份公司 Electric machine and vehicle comprising such an electric machine
CN108448776A (en) * 2018-05-16 2018-08-24 珠海格力电器股份有限公司 Magnetic suspension bearing winding fixing structure, axial magnetic suspension bearing and assembling method
CN110266138A (en) * 2019-07-15 2019-09-20 日本电产凯宇汽车电器(江苏)有限公司 A kind of motor wire outlet structure
CN110266138B (en) * 2019-07-15 2024-05-17 尼得科凯宇汽车电器(江苏)有限公司 Motor outlet structure

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Application publication date: 20170524