CN110311489A - Rotating electric machine - Google Patents
Rotating electric machine Download PDFInfo
- Publication number
- CN110311489A CN110311489A CN201910202316.1A CN201910202316A CN110311489A CN 110311489 A CN110311489 A CN 110311489A CN 201910202316 A CN201910202316 A CN 201910202316A CN 110311489 A CN110311489 A CN 110311489A
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- Prior art keywords
- rotor core
- electric machine
- rotating electric
- pore group
- pore
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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
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned 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)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The present invention provides the rotating electric machine that can be substantially ensured mechanical strength and can be improved torque performance.The rotating electric machine has: stator (20) is wound with coil (24)；And rotor (2), it has the rotor core (4) being made of magnetic material being rotatably freely arranged relative to stator (20) and the permanent magnet (7) for being embedded in rotor core (4), around the permanent magnet (7) in rotor core (4), the the first pore group (11) to the 5th pore group (15) being made of multiple pores is provided in each pole, each pore group (11~15) configures to become convex mode group arow towards the rotation axis of rotor core (4) (P).
Description
Technical field
The present invention relates to rotating electric machines.
Background technique
In rotating electric machine, exist such as lower rotating electrical machine: it has rotor and is wound with the stator of coil, which has
The rotor core being made of magnetic material being rotatably freely arranged relative to stator and the permanent magnetic for being embedded in rotor core
Iron.Permanent magnet is mostly plate-like in order to inhibit manufacturing cost.In this rotating electric machine, in rotor iron due to permanent magnet
The surface magnetic flux density being formed centrally substantially influences the torque performance of rotating electric machine.Therefore, it is intended that the magnetic flux of permanent magnet to the greatest extent may be used
Energy ground is guided to the outer peripheral surface of rotor core.
However, due to by permanent magnetic baried rotor core, generates and do not guided to the outer peripheral surface of rotor core
So-called leakage magnetic flux.When the leakage magnetic flux is from the rotary axis direction of rotor the longitudinal direction end of permanent magnet (hereinafter,
The referred to as longitudinal direction end of permanent magnet) around from the pole the pole N wraparound S and short circuit magnetic flux.In order to inhibit as much as possible
Such leakage magnetic flux, proposition have various technologies.
For example, disclosing following technology: in the case where multiple electromagnetic steel plates being laminated and form rotor core, make with forever
The electromagnetic steel plate of any position opening in the corresponding position in longitudinal direction end of long magnet circumferentially rotates on one side, on one side
It is laminated (for example, referring to Japanese Unexamined Patent Publication 2014-36554 bulletin).In this configuration, in the longitudinal direction end of permanent magnet,
Gap has been intermittently formed on the stacking direction of electromagnetic steel plate.Therefore, it is able to suppress the leakage magnetic flux of permanent magnet, can be improved
The torque performance of rotating electric machine.
Subject to be solved by the invention
However, the following topics exist in above-mentioned conventional art: forming opening correspondingly in electromagnetic steel plate, rotor
The mechanical strength of iron core reduces.
Summary of the invention
Then, the present invention provides the rotating electric machine that can be substantially ensured mechanical strength and can be improved torque performance.
Solution for solving the problem
Rotating electric machine (for example, rotating electric machine 1 in embodiment) of the invention is characterized in that having: stator (example
Such as, the stator 20 in embodiment), it is wound with coil (for example, coil 24 in embodiment)；And rotor is (for example, real
Apply the rotor 2 in mode), there is the rotor core being made of magnetic material being rotatably freely arranged relative to the stator
(for example, rotor core 4 in embodiment) and the permanent magnet of the rotor core is embedded in (for example, in embodiment
Permanent magnet 7), around the permanent magnet in the rotor core, be provided with by multiple pores (for example, implementing
Pore 10 in mode) constitute pore group (for example, the 11~the 8th pore group 18 of the first pore group in embodiment), it is described
Pore group is to become convex mode group towards the rotation axis of the rotor core (for example, rotation axis P in embodiment)
Arow configuration, in each pole of the rotor core, at least provided with the column.
In this way, can substantially ensure the machinery of rotor core due to being only to be formed with multiple pores in rotor core
Intensity.In addition, by the pore group being made of multiple pores to become convex mode group in column towards the rotation axis of rotor core
Ground configuration, thus can the interlinkage flux that rotor core forms stator be easy to by direction and the direction that is easily detected by.
Therefore, other than the magnetic flux of permanent magnet, additionally it is possible to utilize reluctance torque, therefore can be improved the torque of rotating electric machine
Energy.
Rotating electric machine of the invention is characterized in that, includes stator, is wound with coil；And rotor, with phase
For the rotor core being made of magnetic material that the stator is rotatably freely arranged, it is provided in the rotor core by more
The pore group that a pore is constituted, the pore group is to become convex mode group arow towards the rotation axis of the rotor core
Configuration, in each pole of the rotor core, at least provided with the column.
In this way, being only to be formed to be made of multiple pores in rotor core in the rotating electric machine merely with reluctance torque
Pore group, therefore can ensure the torque performance of rotating electric machine, and can also substantially ensure the mechanical strength of rotor core.
In rotating electric machine of the invention, which is characterized in that the aperture of the pore group is 0.5mm or less.
With this configuration, it can more reliably ensure the mechanical strength of rotor core.
In rotating electric machine of the invention, which is characterized in that form the pore group using YAG laser.
With this configuration, it is able to easily form pore group.
Rotating electric machine of the invention is characterized in that having: stator is wound with coil；And rotor, with phase
The rotor core being made of magnetic material that the stator is rotatably freely arranged and it is embedded in the rotor core
Permanent magnet is provided with predetermined processing portion (for example, in embodiment around the permanent magnet in the rotor core
Predetermined processing portion 60), the predetermined processing portion by implement carbonization, nitridation and heat treatment at least one of processing with it is described
Rotor core is easily detected by compared to the interlinkage flux, and the predetermined processing portion is with towards the rotation axis of the rotor core
It is configured as convex mode group arow, in each pole of the rotor core, at least provided with the column.
It with this configuration, is only to form predetermined processing portion in rotor core, therefore can substantially ensure rotor core
Mechanical strength.In addition, by by predetermined processing portion with towards the rotation axis of rotor core become convex mode group arow
Configuration, thus can the interlinkage flux that rotor core forms stator be easy to by direction and the direction that is easily detected by.Cause
This, other than the magnetic flux of permanent magnet, additionally it is possible to utilize reluctance torque, therefore improve the torque performance of rotating electric machine.
Rotating electric machine of the invention is characterized in that having: stator is wound with coil；And rotor, with phase
For the rotor core being made of magnetic material that the stator is rotatably freely arranged, the rotor core is provided with regulation
Processing unit, the predetermined processing portion is by implementing at least one of carbonization, nitridation and heat treatment processing and the rotor core
It is easily detected by compared to the interlinkage flux, the predetermined processing portion is to become convex towards the rotation axis of the rotor core
Mode group arow configuration, in each pole of the rotor core, at least provided with the column.
In this way, be only to form multiple predetermined processing portions in rotor core in the rotating electric machine merely with reluctance torque,
Therefore it can ensure the torque performance of rotating electric machine, and can also substantially ensure the mechanical strength of rotor core.
Invention effect
According to the present invention, it is possible to provide can substantially ensure mechanical strength and improve the rotating electric machine of torque performance.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the rotating electric machine in embodiments of the present invention.
Fig. 2 is the portion the A enlarged drawing of Fig. 1.
Fig. 3 is the explanatory diagram for indicating the arrangement architecture of the pore in embodiments of the present invention, (a), (b) difference in Fig. 3
Indicate the arrangement architecture of different pores.
Fig. 4 is the cross-sectional view of the rotor core in the first variation of embodiments of the present invention.
Fig. 5 is the cross-sectional view of the rotor core in the second variation of embodiments of the present invention.
Fig. 6 is the cross-sectional view of the rotor core in the third variation of embodiments of the present invention.
Fig. 7 is the cross-sectional view of the rotor core in the 4th variation of embodiments of the present invention.
Fig. 8 is the cross-sectional view of the rotor core in the 5th variation of embodiments of the present invention.
Description of symbols:
1 ... rotating electric machine, 2 ... rotors, 4 ... rotor cores, 7 ... permanent magnets, 10 ... pores, 11 ... first pore groups
(pore group), 12 ... second pore groups (pore group), 13 ... third pore groups (pore group), 14 ... the 4th pore group (pores
Group), 15 ... the 5th pore groups (pore group), 16 ... the 6th pore groups (pore group), 17 ... the 7th pore groups (pore group), 18 ...
8th pore group (pore group), 20 ... stators, 24 ... coils, 60 ... predetermined processing portions, P ... rotation axis (rotary shaft).
Specific embodiment
Hereinafter, being illustrated referring to an embodiment of the attached drawing to rotating electric machine of the invention.
The rotating electric machine of present embodiment is for example equipped on the vehicles such as electric vehicle.Electric vehicle is electric motor vehicle, mixes
Close power car and fuel-cell vehicle etc..Electric motor vehicle is driven by power source of battery.Hybrid vehicle is with electricity
Pond and internal combustion engine are that power source is driven.Fuel-cell vehicle is driven by power source of fuel cell.Rotating electric machine exists
Rotary driving force is generated by the electric power supplied from battery when driving.Rotating electric machine is in power generation by being input into rotary shaft
Rotary driving force and generate regenerated electric power.
(rotating electric machine)
Fig. 1 shows the rotating electric machine 1 in embodiment, is that the cross-sectional view orthogonal with rotation axis P (hreinafter referred to as cuts open
View).It should be noted that the rotor 2 of rotating electric machine 1 is six poles, in Fig. 1, pole part, i.e. 1/6 week is only shown
All angular regions parts.
Rotating electric machine 1 have substantially cylindric stator 20 and be arranged in than stator 20 by the position of radially inner side and
The rotor 2 being rotatably freely arranged relative to stator 20.It should be noted that stator 20 and rotor 2 are with respective central axis
State configuration on common axle.Hereinafter, common axle is known as rotation axis P, will be known as around the direction that rotation axis P turn-takes
It is circumferential, it will be known as with the direction rotation axis P and circumferential orthogonal direction radial.
Stator 20 has substantially cylindric stator core 21.Stator core 21 can by be laminated multiple electromagnetic steel plates,
Or soft magnetism powder press molding is formed.On the inner peripheral surface of stator core 21, it is formed with prominent towards rotation axis P
Multiple (for example, being in the present embodiment 9) teeth 22 equally spaced arranged out and in the circumferential.Tooth 22 is from rotation axis P
Direction is shaped generally as T-shaped when observing.
That is, tooth 22 is the tooth main body 22a radially extended and the radially inner side end (top) from tooth main body 22a along week
The component integrally formed to the flange part 22b of extension.Slot 23 is respectively formed between adjacent each tooth 22.It is inserted via these
Slot 23 and be wound with coil 24 on each tooth 22.By supplying electric current to the coil 24, advised to be formed at stator 20 (tooth 22)
Fixed interlinkage flux.
Rotor 2, which has, to be extended along rotation axis P and around the axis 3 of rotation axis P rotation and is externally embedded to and is fixed on axis 3
Generally cylindrical rotor core 4.The perforation that axis 3 can be made to be inserted into or be pressed into is formed in the radial center of rotor core 4
Hole 5.
Here, the interlinkage flux formed by stator 20 to be easy to the direction passed through in the rotor core 4 of present embodiment
Referred to as q axis.In addition, the orthogonal direction along radial direction of, magnetic orthogonal with q axis electricity is known as d axis.
That is, the pole part of rotor core 4 refers to the region (1/6 week all angular regions) between q axis.Therefore, turn
Sub- iron core 4 is configured to six poles.In addition, in the rotor core 4 of present embodiment, one extremely in circumferential center become d axis.
In rotor core 4, for each pole, be arranged has five layers of pore group 11,12,13,14,15 radially
(the first pore group 11, the second pore group 12, third pore group 13, the 4th pore group 14, the 5th pore group 15).That is, in radial direction
Outermost (farthest off-axis 3 positions) is formed with the first pore group 11, successively from the first pore group 11 towards radially inner side
Being arranged has the second pore group 12, third pore group 13, the 4th pore group 14 and the 5th pore group 15.Also, the 5th pore
15 configuration of group is in radially inner most (position near paraxial 3).
In addition, each pore group 11~15 by along the interlinkage flux formed by stator 20 by path in a manner of shape
At.That is, each pore group 11~15 is formed by bending with becoming convex mode towards axis 3.Therefore, each pore group 11~15 is with from rotation
It along q axis direction and more is proximate in longitudinal direction more being proximate to the position at longitudinal direction both ends then when the direction axis P is observed
It then gets over the mode orthogonal with d axis and is formed in the position of centre.In addition, the longitudinal direction both ends of each pore group 11~15 are in rotor core 4
Outer peripheral surface 4a expose.
In rotor core 4, in the 4th pore group 14 in five layers of pore group 11~15, there are two permanent magnetics for setting
Iron 7.Two permanent magnets 7 are configured to fill two magnet receiving holes 6 respectively, described two magnet receiving holes 6 with permanent magnetic
The corresponding mode of the shape of iron 7 is formed in rotor core 4.Also, in magnet receiving hole 6, for example, by bonding agent etc. come
Fixed permanent magnet 7.In addition, the permanent magnet for the plate that permanent magnet 7 is rectangle when being from the direction rotation axis P.
It should be noted that in the following description, it, will be from the direction rotation axis P when pointing out the position of permanent magnet 7
Longitudinal direction when observation is referred to as longitudinal direction to be illustrated.
Two permanent magnets 7 are configured by becoming symmetrical mode in the 4th pore group 14 and centered on d axis.That is,
Two permanent magnets 7 are configured to, opposite with first end 7a relative to the first end 7a for leaning on d axis side in the long side direction
The second end 7b of side be located at radial outside.Also, two permanent magnets 7 are configured to, and are tended to from first end 7a
The second end 7b and be gradually distance from d axis.It should be noted that the 4th pore group 14 is not formed at the portion configured with permanent magnet 7
Position.
For the permanent magnet 7 being configured so that, the magnetic flux of the side outer peripheral surface 4a of the rotor core 4 in each permanent magnet 7 is close
Degree is high.In addition, the magnetic flux of permanent magnet 7 is easy to concentrate on d axis.That is, two be respectively configured in 1/6 week all angular regions forever
The direction of magnetization of long magnet 7 is identical.That is, it is each to be for example set as two permanent magnets 7 being respectively configured in 1/6 week all angular regions
From the face of radial outside be magnetized to the pole N.In this case, adjacent others 1/6 week all angular regions in the circumferential
The face of the respective radial outside of two permanent magnets 7 of configuration is magnetized to the pole S.
Fig. 2 is the portion the A enlarged drawing of Fig. 1.
Here, as shown in Fig. 2, the pore group 11~15 of each layer configures shape with being arranged in multiple row by multiple pores 10
At.
Fig. 3 is the explanatory diagram for indicating the arrangement architecture of pore 10, and (a), (b) respectively indicate different pores 10 in Fig. 3
Arrangement architecture.
In Fig. 3 shown in (a), the arrangement architecture of pore 10 can be configured to each pore 10 in each column and be aligned.In addition,
As shown in (b) in Fig. 3, as the arrangement architecture of pore 10, each pore 10 can be configured to and offset one from another in each column.
Each pore group 11~15 is formed by multiple pores 10, therefore magnetic flux is easily detected by.Therefore, as shown in Figure 1, turning
Sub- iron core 4 be formed with magnetic flux be easy to by direction (q axis direction) and the direction (d axis direction) that is easily detected by of magnetic flux.
The aperture of pore 10 is 0.5mm or less.Pore 10 can for example be formed by irradiating YAG laser.However, not
It is defined in this, the aperture of pore 10 can be set as 0.5mm or less.For example, it is also possible to by electrical discharge machining etc. come shape
At pore 51.
Under this structure, rotor core 4 be formed with magnetic flux be easy to by direction (q axis direction) and magnetic flux do not allow
The direction (d axis direction) easily passed through, therefore when supplying electric current to the coil 24 of stator 20, generate reluctance torque.Rotor 2 utilizes
The reluctance torque and rotate.
In addition, being configured with permanent magnet 7 in the 4th pore group 14 in rotor core 4.In the permanent magnet 7 and determine
Magnetic attraction, magnetic repulsion are generated between the interlinkage flux of son 20.Such attraction, repulsive force facilitate the rotation of rotor 2
Torque.
In this way, rotor 2 passes through magnetic flux caused by reluctance torque caused by each pore group 11~15 and permanent magnet 7
Efficiency rotates well.Further, it is possible to improve the rotating torques of rotor 2.
In this way, in the above-described embodiment, in rotor core 4, being provided with to become convex mode towards axis 3 and be bent
Five layers of the pore group 11~15 formed.Pore group 11~15 is formed by multiple pores 10, and magnetic flux is easily detected by.Therefore, exist
Rotor core 4 be formed with magnetic flux be easy to by direction (q axis direction) and the direction (d axis direction) that is easily detected by of magnetic flux.By
This, the magnetic flux for the permanent magnet 7 that can be arranged using reluctance torque and in rotor core 4 revolves 2 efficiency of rotor well
Turn.
In addition, rotor core 4 formed magnetic flux be easy to by direction and be easily detected by direction when, be only in rotor
Iron core 4 forms multiple pores 10, therefore can substantially ensure the mechanical strength of rotor core 4.
In addition, the aperture of pore 10 is 0.5mm or less.Therefore, the mechanical strength of rotor core 4, Neng Gouke will not be damaged
Ensure the mechanical strength of rotor core 4 by ground.
Moreover, forming pore 10 (each pore group 11~15) by irradiation YAG laser, it is able to easily form pore
10.However, being not limited to be formed by irradiating YAG laser, the aperture of pore 10 capable of being set as when forming pore 10
0.5mm or less.For example, it is also possible to form pore 10 by electrical discharge machining etc..
It should be noted that in the above-described embodiment, illustrating to be formed with five layers of pore group 11 in rotor core 4
~15 the case where.In addition, illustrate each pore group 11~15 by towards axis 3 at protrusion in a manner of be formed by bending the case where.Moreover, saying
The case where two permanent magnet 7 are arranged in the 4th pore group 14 in five layers of pore group 11~15 is illustrated.However, not limiting
In this, the number of plies, the configuration of permanent magnet for forming pore group can use various forms.Hereinafter, referring to attached drawing
Concrete example is illustrated.
(first variation)
Fig. 4 is the cross-sectional view of the rotor core 4 in first variation.It should be noted that in variation below, it is right
The form being the same as the foregoing embodiment indicates same appended drawing reference and omits the description.
As shown in figure 4, eight layers of pore group 11~18 can also be arranged in rotor core 4, (the first pore group 11, second is thin
Hole group 12, third pore group 13, the 4th pore group 14, the 5th pore group 15, the 6th pore group 16, the 7th pore group the 17, the 8th
Pore group 18).Pore group 11~18, which is formed towards axis 3, becomes convex, can not also be formed by bending.That is, as shown in figure 4,
It can also be formed by three straight lines.It is preferred that one of the center in three straight lines is as orthogonal with d axis as possible, preferred its two sides
Straight line is as far as possible along q axis.
Alternatively, it is also possible to be, permanent magnet 7 is provided with one on the straight line in the center of the 6th pore group 16.That is, can also
To be, it is orthogonal with d axis by longitudinal direction and by d axis centered on and become it is symmetrical in a manner of be provided with a permanent magnet 7.
According to above-mentioned first variation, reluctance torque can be more effectively applied flexibly.
(the second variation)
Fig. 5 is the cross-sectional view of the rotor core 4 in the second variation.
As shown in figure 5, being also possible to configure three permanent magnets 7 in the 4th pore group 14.Three permanent magnets 7 etc.
Compartment of terrain configuration.It is further preferred, that the permanent magnet 7 in the center in three permanent magnets 7 is configured to longitudinal direction and d axis
It is orthogonal and symmetrical as line centered on d axis.
According to the second above-mentioned variation, it is capable of increasing the magnetic flux of permanent magnet 7, can be improved torque performance.
(third variation)
Fig. 6 is the cross-sectional view of the rotor core 4 in third variation.
As shown in fig. 6, being also possible to other than configuring two permanent magnets 7 in the 4th pore group 14, also second
Permanent magnet 7 is configured in pore group 12.Preferably, the permanent magnet 7 configured in the second pore group 12 is configured to long side side
To it is orthogonal with d axis and centered on d axis and become line it is symmetrical.
According to the second above-mentioned variation, it is capable of increasing the magnetic flux of permanent magnet 7, can be improved torque performance.
(the 4th variation)
Fig. 7 is the cross-sectional view of the rotor core 4 in the 4th variation.
As shown in fig. 7, being also possible to become the pore group 11~16 (that convex mode is formed by bending six layers towards axis 3
One pore group 11, the second pore group 12, third pore group 13, the 4th pore group 14, the 5th pore group 15, the 6th pore group 16).
Also, it is also possible in third pore group 13 and distinguishes two permanent magnets 7 of each configuration in the 5th pore group 15.
According to the 4th above-mentioned variation, it is capable of increasing the magnetic flux of reluctance torque and permanent magnet 7, can be further increased
Torque performance.
(5th variation)
Fig. 8 is the cross-sectional view of the rotor core 4 in 5th variation.
As shown in figure 8, any pore group being also possible in each pore group 11~15 is not provided with permanent magnet 7.
Even if can also make rotor 2 rotate merely with reluctance torque in the case where constituting in this wise.
(the 6th variation)
In addition, in above-mentioned embodiment and first variation into 5th variation, illustrate to be formed pore group 11~
18, the case where obtaining reluctance torque.However, it's not limited to that, it is also possible at position corresponding with pore group 11~18
Implement the processing for being set as non-magnetic material, predetermined processing portion 60 (for example, referring to the pore group 11~15 of Fig. 1) is set to replace this
A little pore groups 11~18.
Method in position corresponding with pore group 11~18 setting predetermined processing portion 60 is concretely demonstrated.
In this case, in the not formed pore group 11~18 of rotor core 4.Also, predetermined processing is set in rotor core 4
In the state of before portion 60, it is magnetic material that rotor core 4 is whole.From the state, such as an example of defined processing,
Following processing can be enumerated: forming the portion in predetermined processing portion 60 using YAG (Yttrium Aluminium Garnet) laser to make
Position localized hyperthermia, increases the retained austenite layer based on chilling later.
Here, by can locally be added to the YAG laser etc. that the tiny segment for forming predetermined processing portion 60 irradiates
Heat, melting, the part after being heated become non magnetic and unstable austenite, but sharply by the iron of surrounding (rotor core 4)
Ground is cooling, causes martensitic traoformation.At this point, forming the retained austenite layer as quasi-steady layer.The retained austenite layer becomes
Nonmagnetic portion.In order to stabilize austenite case, Cr (chromium), the elements such as C (carbon) are added under normal circumstances, these elements can be with
It is solid-solution in rotor core 4 in advance, can also be externally supplied in YAG laser irradiation and (coat, blow).
It should be noted that becoming the processing heated for carbonization, nitridation and heat treatment.Therefore, as with
It can also be lifted other than having used the method for above-mentioned YAG laser in the method for making predetermined processing portion 60 become non-magnetic material
Various methods out.Such as there are high-frequency quenching, flame hardening, gas seep charcoal, vacuum seep charcoal, dripping type seep charcoal method,
Liquid seeps charcoal, individual seeps charcoal, seeps charcoal nitridation, gas nitriding, gas soft nitriding, bath nitriding, pecvd nitride, sulfurizing nitrogen
The various methods such as change, sulfurizing processing, Bononizing pretreatment, diffusion saturation process.In addition, about above-mentioned processing, in order to shape
The processing for implementing part at the position of regulation processing unit 60, is sheltered as needed.
Therefore, it according to above-mentioned sixth embodiment, can be realized and embodiment above-mentioned and first variation to
The same effect of five variations.In addition, being only to form predetermined processing portion 60 in rotor core 4, therefore can substantially ensure rotor
The mechanical strength of iron core 4.In addition, in order to make predetermined processing portion 60 become non-magnetic material, selection is carbonized, in nitridation and heat treatment
At least one and be applied to the position to form predetermined processing portion 60.Therefore, predetermined processing portion 60 can easily be made to become non-
Magnetic material.
It should be noted that embodiments of the present invention and each variation be as an example and the content that is prompted, and
It is not intended to limit the range of invention.These embodiments and each variation can be implemented in the form of others are various, not take off
In the range of the purport of invention, various omissions, replacements and changes can be made.These embodiments and each variation or its change
Shape be contained in the range of invention, in the same manner as purport, be contained in invention and its same range documented by technical solution.
For example, illustrating that rotating electric machine 1 is equipped on the vehicles such as electric vehicle in above-mentioned embodiment and each variation
The case where.However, it's not limited to that, driving source of the rotating electric machine 1 as various electrical equipments can be used.
In addition, illustrating the quantity of the tooth 22 (slot 23) of rotating electric machine 1 in above-mentioned embodiment and each variation
The case where number of poles for nine and rotor 2 is sextupole.However, it's not limited to that, above-mentioned embodiment can be suitable for
The rotating electric machine of various slot counts, number of poles.
Claims (6)
1. a kind of rotating electric machine, which is characterized in that
The rotating electric machine has:
Stator is wound with coil；And
Rotor with the rotor core being made of magnetic material being rotatably freely arranged relative to the stator and buries
Set on the permanent magnet of the rotor core,
Around the permanent magnet in the rotor core, it is provided with the pore group being made of multiple pores,
The pore group is configured with becoming convex mode group arow towards the rotation axis of the rotor core,
In each pole of the rotor core, at least provided with the column.
2. a kind of rotating electric machine, which is characterized in that
The rotating electric machine has:
Stator is wound with coil；And
Rotor has the rotor core being made of magnetic material being rotatably freely arranged relative to the stator,
The pore group being made of multiple pores is provided in the rotor core,
The pore group is configured with becoming convex mode group arow towards the rotation axis of the rotor core,
In each pole of the rotor core, at least provided with the column.
3. rotating electric machine according to claim 1 or 2, which is characterized in that
The aperture of the pore group is 0.5mm or less.
4. rotating electric machine described in any one of claim 1 to 3, which is characterized in that
The pore group is formed using YAG laser.
5. a kind of rotating electric machine, which is characterized in that
The rotating electric machine has:
Stator is wound with coil；And
Rotor with the rotor core being made of magnetic material being rotatably freely arranged relative to the stator and buries
Set on the permanent magnet of the rotor core,
It is provided with predetermined processing portion around the permanent magnet in the rotor core, which passes through implementation
At least one of carbonization, nitridation and heat treatment are handled and magnetic flux is easily detected by compared with the rotor core,
The predetermined processing portion is configured with becoming convex mode group arow towards the rotation axis of the rotor core,
In each pole of the rotor core, at least provided with the column.
6. a kind of rotating electric machine, which is characterized in that
The rotating electric machine has:
Stator is wound with coil；And
Rotor has the rotor core being made of magnetic material being rotatably freely arranged relative to the stator,
The rotor core is provided with predetermined processing portion, the predetermined processing portion is by implementing in carbonization, nitridation and heat treatment
At least one is handled and magnetic flux is easily detected by compared with the rotor core,
The predetermined processing portion is configured with becoming convex mode group arow towards the rotation axis of the rotor core,
In each pole of the rotor core, at least provided with the column.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-053103 | 2018-03-20 | ||
| JP2018053103A JP2019165586A (en) | 2018-03-20 | 2018-03-20 | Rotary electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110311489A true CN110311489A (en) | 2019-10-08 |
Family
ID=68066354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910202316.1A Pending CN110311489A (en) | 2018-03-20 | 2019-03-15 | Rotating electric machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2019165586A (en) |
| CN (1) | CN110311489A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113517770A (en) * | 2021-07-01 | 2021-10-19 | 河南通宇新源动力有限公司 | Multi-combined permanent magnet motor rotor punching sheet and permanent magnet motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113517770A (en) * | 2021-07-01 | 2021-10-19 | 河南通宇新源动力有限公司 | Multi-combined permanent magnet motor rotor punching sheet and permanent magnet motor |
| CN113517770B (en) * | 2021-07-01 | 2023-08-29 | 河南通宇新源动力有限公司 | Multi-combination type permanent magnet motor rotor punching sheet and permanent magnet motor |
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|---|---|
| JP2019165586A (en) | 2019-09-26 |
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