CN107240985A - Electric rotating machine - Google Patents
Electric rotating machine Download PDFInfo
- Publication number
- CN107240985A CN107240985A CN201611115203.0A CN201611115203A CN107240985A CN 107240985 A CN107240985 A CN 107240985A CN 201611115203 A CN201611115203 A CN 201611115203A CN 107240985 A CN107240985 A CN 107240985A
- Authority
- CN
- China
- Prior art keywords
- axle
- axle sleeve
- oil circuit
- rotor core
- rotating machine
- 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.)
- Granted
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The present invention relates to a kind of electric rotating machine.In the electric rotating machine cooled down making coolant flow to core to permanent magnet, for the purpose of realizing effective cooling by easy method, including：Axle (11), the axle is supported on shell (2) in revolvable mode；Axle sleeve (12), the axle sleeve is fixed on axle；Rotor core (13) and permanent magnet (14), the rotor core and permanent magnet are installed on the outer peripheral face of axle sleeve；End plate (15,16), the end plate is installed on the both ends of the surface of rotor core；And directing plate (18), the directing plate is configured at the cylinder end surface of axle sleeve, and form space together with the peripheral part of axle and the inner cylinder portion inner peripheral surface of axle sleeve, axle (11) is provided with the insertion oil circuit hole that space is communicated to from shaft end, and the inner peripheral surface of end plate (15) is provided with oil circuit groove (15a), the oil circuit groove is communicated to the gap between rotor core (13) and permanent magnet (14), and axle sleeve (12) is provided with the insertion oil circuit hole (12a) for connecting in space with oil circuit groove (15a).
Description
Technical field
The present invention relates to a kind of cooling structure of the rotor of electric rotating machine.
Background technology
It is as the cooling device of existing electric rotating machine, such as known to have following cooling device, as Patent Document 1,
Make axle and the axle carried out multiple component combinations such as enhanced shaft sleeve part to constitute armature spindle, wherein, in the shaft core portion of axle and
The fastening part of axle and shaft room sets cooling oil path respectively, supplies cooling oil via the cooling oil path, rotor and stator etc. are entered
Row cooling.
Patent document 1：No. 5448559 publication of Japanese Patent Laid
But, in the cooling device shown in above-mentioned patent document 1, because the hole from the shaft core portion of axle is by axle and axle sleeve
Fastening part is connected, and sets the through hole of arrival axle sleeve outer peripheral face to form the oil circuit of rotor, therefore, in cylindrical portion as axle sleeve
It is difficult to process diametrically longer hole in part, there is the problem of production cost uprises such.
Further, since setting the oil circuit connected with the fastening part of axle and shaft room, accordingly, there exist the essence of the size because of each part
Degree or assembly precision and cause oil circuit diameter at fastening part to produce the possibility of deviation, and the oil mass existed between product is not permanent
Cooling that is fixed and causing rotor produces the problem of deviation is such.
In addition, in order to efficiently be cooled down to rotor, preferably the permanent magnet of the thermal source as rotor is cooled down,
But because oil circuit is long, therefore, supplying to the coolant of permanent magnet can turn into and the high temperature after axle sleeve and rotor core progress heat exchange
, there is the problem of cooling is insufficient in the coolant of change.
In addition, oil circuit increase can cause the increase of the pressure loss, therefore, in order to ensure the oil mass required for cooling, it is necessary to
Make the big footpath of oil circuit diameter, exist and cause the problem of cost increase and weight increase because of the maximization of each part.
In addition, in the cooling device shown in above-mentioned patent document 1, being configured between rotor core set packing ring, and profit
Centrifugal force produced by being rotated with rotor spreads coolant, and oil is also splashed into stator core also to be cooled down to stator, but
Output is set to decline because of the thickness of packing ring, accordingly, there exist must make what motor maximized to obtain necessary output
Problem.In addition, the coolant sputtered from rotor can enter the space between rotor and stator, when rotor rotates because being cut
Cut and generate heat, therefore, also there is the problem of coolant is as thermal source.
In addition, in the electric rotating machine of hybrid vehicle and electric automobile etc., it is desirable to poor in the fuel efficiency of engine
Low speed rotation region in have high torque (HT), but using because rotor rotate produced by centrifugal force in the case of, due to rotor
Cooling depend on rotating speed, accordingly, there exist the supply of coolant is insufficient in low speed rotation region, output is not enough asks
Topic.
The content of the invention
The present invention is makees the problem of solving above-mentioned such, its object is to make what is produced in the rotor with simple structure
Heat is effectively cooled down.
The electric rotating machine of the present invention, it is characterised in that including：Shell；Axle, the axle is by bearing with revolvable mode branch
Hold in the shell；Axle sleeve, the axle sleeve is fixed on the axle；Rotor core, the rotor core is installed on outside the cylindrical portion of the axle sleeve
Side face；Permanent magnet, the permanent magnet is separated with the periphery for being installed on the rotor core with gap；A pair of end plate, this pair of end plate is installed
In the both ends of the surface of the rotor core；And directing plate, the directing plate is configured at the cylinder end surface of the axle sleeve, and with the axle
Peripheral part and the inner cylinder portion inner peripheral surface of the axle sleeve form space together, the axle is provided with from shaft end and is communicated to the space
Insertion oil circuit hole, and the inner peripheral surface of the end plate is provided with oil circuit groove, and the oil circuit groove is communicated to the rotor core and described
Gap between permanent magnet, and the axle sleeve is provided with the insertion oil circuit hole for connecting in the space with the oil circuit groove.
According to the electric rotating machine of the present invention, due to the oil circuit length for the armature spindle being made up of axle and axle sleeve can be shortened, therefore,
The processing of armature spindle can easily be carried out.
Further, since the insertion oil circuit hole of the insertion oil circuit hole of axle and axle sleeve need not be arranged on into relative position, separately
Outside, oil circuit groove is formed to the inner circumferential end face progress groove processing of end plate, therefore, the free degree of groove shape is high, can be relative to axle sleeve
Insertion oil circuit hole be easy to set up considering the opening portion of dimensional accuracy or assembly precision, as a result, oil circuit diameter can be made
Deviation it is small, and stable cooling can be obtained in easy method.
Brief description of the drawings
Fig. 1 is the sectional view of the schematic construction for the electric rotating machine for representing embodiment of the present invention 1.
Fig. 2 is the sectional view illustrated for the flowing to the coolant in the rotor in Fig. 1.
Fig. 3 is the main portion sectional view for representing axle sleeve and end plate along the line B-B in Fig. 2.
Fig. 4 is the sectional view that illustrates of other flowings of the coolant in the electric rotating machine to embodiment of the present invention 1.
Fig. 5 is the sectional view of the schematic construction for the electric rotating machine for representing embodiment of the present invention 2.
Fig. 6 is the stereogram for the schematic construction for representing the directing plate in Fig. 5.
Fig. 7 is the sectional view that illustrates of flowing of the coolant in the electric rotating machine to embodiment of the present invention 2.
(symbol description)
1 electric rotating machine
2 shells
2a, 2b casing component
3 bearings
7 oil circuits
7a, 7b spray-hole
7c oil circuits
10 rotors
11 axles
11a insertion oil circuits hole
12 axle sleeves
12a insertion oil circuits hole
13 rotor cores
14 permanent magnets
15th, 16 end plate
15a oil circuit grooves
17 clamping components
18 directing plates
18a axial faces
20 stators
21 stator cores
22 insulators
23 stator coils
23a coil-ends
24 coil end caps
Embodiment
Embodiment 1
Hereinafter, with reference to Fig. 1~Fig. 3 as embodiment 1, the present invention will be described.
In addition, in each figure, same-sign represents same or equivalent part.
Fig. 1 is the sectional view of the schematic construction for the electric rotating machine for representing embodiment of the present invention 1.
This electric rotating machine has the function as motor or generator, can be loaded into such as hybrid vehicle or electricity
Electrical automobile etc..
In Fig. 1, electric rotating machine 1 is configured to include：Shell 2, the shell 2 make a pair of bowl-shape component 2a, 2b docking and
Formed；Stator 20, circumferentially shape is configured in above-mentioned shell 2 stator 20；And rotor 10, between the rotor 10 and stator 20
Across certain space, shell 2 is configured in revolvable mode.
Here, stator 20 includes：Circular stator core 21；Insulator 22, the insulator 22 is assembled in stator core 21
Both ends of the surface；Stator coil 23, the stator coil 23 clips insulator 22 and is wound in stator core 21；And coil end cap 24, the line
Enclose both ends of the surface of the end cap 24 to be configured at stator core 21 in the way of the coil-end 23a for covering stator coil 23.
On the other hand, rotor 10 includes：Axle 11, the axle 11 is supported to revolve via the bearing 3 in shell 2
Turn；Axle sleeve 12, the axle sleeve 12 is used to strengthen above-mentioned axle 11 and with the support and cylindrical portion for being fixed on axle 11；Rotor
Core 13, the rotor core 13 is installed on the periphery of above-mentioned axle sleeve 12；Permanent magnet 14, the permanent magnet 14 constitutes and is configured at said stator core
The magnetic pole of 13 peripheries；And a pair of end plate 15,16 and clamping components 17, this pair of end plate 15,16 and clamping components 17 and axle sleeve
12 peripheral part is fitted together to, and for rotor core 13 and permanent magnet 14 to be fixed.
In addition, including directing plate 18, the directing plate 18 is abutted and configured with the inner circumferential side side end of axle sleeve 12, drawn by above-mentioned
Fastening part between guide plate 18, the inner peripheral portion of the peripheral part of axle 11 and axle sleeve 12, axle 11 and axle sleeve 12 forms space in rotor 10
A.In addition, be formed with insertion oil circuit hole 11a on axle 11, insertion oil circuit hole 11a is by from the axially disposed axial hole in one end
The radial hole for radially extending with from above-mentioned axial hole and being connected with space A is constituted.In addition, being provided with axle sleeve 12 and space
Multiple insertion oil circuit hole 12a of A connections, in addition, multiple oil circuit groove 15a are formed with the end plate 15 of a side, oil circuit groove 15a
It can be connected with the gap between rotor core 13 and the permanent magnet 14 for being configured at the peripheral part of rotor core 13.
In addition, shell 2 is formed with inlet and outlet (not shown), oil circuit 7, multiple spray-hole 7a, multiple injections
Hole 7b, oil circuit 7c (not shown with the linking portion of oil circuit 7), wherein, above-mentioned inlet and outlet are used for will be from outside pump pressure
The coolant sent is imported, discharge, and above-mentioned oil circuit 7 is used for the two ends that the coolant injected from inlet is delivered to stator 20,
Multiple above-mentioned spray-hole 7a are used to that inwall spray of the next coolant 5 towards coil-end 23a or coil end cap 24 will to be conveyed from oil circuit 7
Penetrate, multiple above-mentioned spray-hole 7b make coolant 5 be sprayed towards bearing 3, above-mentioned oil circuit 7c is used to supply coolant to located at axle
11 insertion oil circuit hole 11a.
Then, the cooling effect of the electric rotating machine 1 to constituting as described above is illustrated.
First, in the engine start of automobile etc., external pump and electric rotating machine 1 are acted, using external pump by coolant
Inside oil circuit 7, spray-hole 7a, 7b, 7c force feed to electric rotating machine 1.Supplied via above-mentioned oil circuit 7, spray-hole 7a, 7b, 7c
The coolant come is discharged to space A from the insertion oil circuit hole 11a of axle 11, in the case where rotor 10 rotates using rotor 10 from
Mental and physical efforts and the inner peripheral surface for being concentrated to axle sleeve 12, or the pole low speed rotation of rotor 10 or it is non-rotary in the case of utilize deadweight
And it is concentrated to the inner peripheral surface of axle sleeve 12.Now, as shown in Fig. 2 playing dykes and dams located at the directing plate 18 of the end face of axle sleeve 12
Effect, coolant (being represented by dashed line in figure) is accumulated in be formed in the space A of the inner peripheral surface of axle sleeve 12 in advance, and can suppress
Coolant is to axial outflow.
In addition, the coolant for lodging in space A connects via the insertion oil circuit hole 12a of axle sleeve 12, with insertion oil circuit hole 12a
The logical oil circuit groove 15a located at end plate 15, and supplied as indicated by an arrow in Fig. 2 between rotor core 13 and permanent magnet 14
Gap.Thereby, the coolant at utmost inhibiting heat exchange can be supplied to permanent magnet 14, and can realizes that rotor 10 more has
The cooling of effect.
In addition, Fig. 3 represents the major part section of the axle sleeve and end plate along the line B-B in Fig. 2.
Here, the oil circuit for being formed at the armature spindle being made up of axle 11 and axle sleeve 12 can only be set to the axle connected with space A
The insertion oil circuit hole 12a for the axle sleeve 12 that 11 insertion oil circuit hole 11a is connected with from space A towards the side of permanent magnet 14.As a result, energy
Shorten the oil circuit length between axle 11 and axle sleeve 12, accordingly, it is capable to easily carry out the processing of armature spindle.
Practised physiognomy further, since the insertion oil circuit hole 11a of axle 11 and axle sleeve 12 insertion oil circuit hole 12a need not be arranged on
To position at, in addition, implementing groove processing to form oil circuit groove 15a, therefore, the freedom of groove shape to the inner circumferential end face of end plate 15
Degree is high, can be easy to set up considering the opening portion of dimensional accuracy or assembly precision relative to the insertion oil circuit hole 12a of axle sleeve 12.
Thus, the deviation of oil circuit diameter can be made small, and stable cooling can be obtained in easy method.
Further, since can shorten from the inner peripheral surface of axle sleeve 12 to the oil circuit of permanent magnet 14, accordingly, it is capable to make the pressure of coolant
Loss diminishes, and accumulates coolant by advancing with directing plate 18, even if the small centrifugation in armature spindle pole low speed rotation
In the presence of power, coolant can be also supplied to permanent magnet 14, and in the case where armature spindle does not rotate enough, can also utilized
The deadweight of coolant is supplied, so as to accelerate the cooling of rotor 10.
In addition, directing plate 18 plays a part of radiator fan, by making the rotation of rotor 10 carry out directing plate 18
Air cooling, the coolant contacted with directing plate 18 can also be cooled down indirectly, can supply the lower coolant of temperature to permanent magnet
14, and the more effectively cooling of rotor 10 can be realized.
Then, based on Fig. 4, other cooling effects in such embodiment 1 are illustrated.
In embodiment 1, as shown in figure 4, being configured to make the bearing portion 2c of the shell 2 supported to bearing 3 axle
It is prominent relative to casing component 2a inner wall part to end face.
By so protruding bearing portion 2c, when the coolant sprayed from the spray-hole 7b for being formed at casing component 2a is outside
After mould component 2a internal perisporium flows through, can near bearing portion 2c along bearing portion 2c projected direction change liquid stream, then, profit
With the surface tension of the coolant of the axial end positioned at bearing portion 2c, following three liquid stream can be formed, i.e. along bearing portion 2c
End face flow to the liquid stream X, the space C formed in the axial end by bearing portion 2c, the end face of directing plate 18 and axle 11 of bearing 3
Liquid the stream Y, the liquid stream Z fallen using the deadweight of coolant from bearing portion 2c of interior flowing.
Thereby, due to that can lubricate bearing 3 using liquid stream X, and it can make to disperse to cold between the C of space using liquid stream Y, Z
But liquid is abutted with directing plate 18, accordingly, it is capable to make the further cooling of the directing plate after being cooled down by air cooling 18 using oil cooling.Thus,
It can cool down, and can more effectively be cooled down to accumulating in the coolant between directing plate 18 and the inner peripheral portion of axle sleeve 12.
Embodiment 2
Fig. 5 is the sectional view of the schematic construction for the electric rotating machine for representing embodiment of the present invention 2.
In above-mentioned embodiment 1, directing plate 18 is arranged to substantially discoid, bearing portion 2c axial end is configured
In the position separated with axle sleeve 12 in the axial direction, but in embodiment 2, as shown in Figure 5, Figure 6, it is configured to set directing plate 18
Substantially cup-shaped shape is set to, and protrudes the casing component 2a supported to bearing 3 bearing portion 2c, and makes directing plate
18 axial face 18a is relative across with gap with the inner peripheral surface of axle sleeve 12 and bearing portion 2c outer peripheral face.
By constituting as described above, axle sleeve 12 is accumulated in from the insertion oil circuit hole 11a of the axle 11 cooling liquid energies released
Space between the axial face 18a of inner peripheral surface and substantially cup-shaped directing plate 18, and the coolant contacted with directing plate 18 can be increased
Surface area.Thus, rotated by rotor 10 and the air cooling of directing plate 18 can be made, therewith, the coolant for being trapped in space A can entered
Row cooling, so as to more effectively be cooled down.
In addition, as shown in fig. 7, passing through the axial face 18a for making directing plate 18 and the bearing portion 2c axially protruded periphery
Face is overlapping, due to not only liquid stream Y coolant, can also be abutted from the bearing portion 2c liquid stream Z fallen coolant with directing plate 18,
Accordingly, it is capable to make more coolants be contacted with the spacious face of directing plate 18, so as to further improve cooling effect.
In addition, the present invention is not limited to above-mentioned embodiment, can be carried out in scope without departing from its spirit suitably deformation,
Omit.
Claims (3)
1. a kind of electric rotating machine, it is characterised in that including：Shell；Axle, the axle is supported on institute by bearing in revolvable mode
State shell；Axle sleeve, the axle sleeve is fixed on the axle；Rotor core, the rotor core is installed on the cylindrical portion outer peripheral face of the axle sleeve；Forever
Magnet, the permanent magnet is separated with the periphery for being installed on the rotor core with gap；A pair of end plate, this pair of end plate is installed on described turn
The both ends of the surface of sub- core；And directing plate, the directing plate is configured at the cylinder end surface of the axle sleeve, and with the peripheral part of the axle
Space is formed together with the inner cylinder portion inner peripheral surface of the axle sleeve,
The axle is provided with the insertion oil circuit hole that the space is communicated to from shaft end, and the inner peripheral surface of the end plate is provided with oil
Road groove, the oil circuit groove is communicated to the gap between the rotor core and the permanent magnet, and the axle sleeve is provided with the sky
Between the insertion oil circuit hole that is connected with the oil circuit groove.
2. electric rotating machine as claimed in claim 1, it is characterised in that
The directing plate is shaped generally as cup-shaped.
3. electric rotating machine as claimed in claim 2, it is characterised in that
Make being axially protruded to the bearing portion that the bearing is supported for the shell, the axial face of the directing plate and institute
The inner peripheral surface of axle sleeve and the outer peripheral face of the bearing portion are stated across spatially relative.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016-065015 | 2016-03-29 | ||
| JP2016065015A JP6190910B1 (en) | 2016-03-29 | 2016-03-29 | Rotating electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107240985A true CN107240985A (en) | 2017-10-10 |
| CN107240985B CN107240985B (en) | 2019-03-22 |
Family
ID=59720391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611115203.0A Active CN107240985B (en) | 2016-03-29 | 2016-12-07 | Rotating electric machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6190910B1 (en) |
| CN (1) | CN107240985B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111384798A (en) * | 2018-12-26 | 2020-07-07 | 本田技研工业株式会社 | Rotating electrical machine |
| CN111435798A (en) * | 2019-01-11 | 2020-07-21 | 本田技研工业株式会社 | Rotating electrical machine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110165833B (en) * | 2019-06-18 | 2020-10-27 | 徐州亚泰电机有限公司 | Explosion-proof type three-phase asynchronous motor |
| JP6934977B1 (en) * | 2020-04-16 | 2021-09-15 | 三菱電機株式会社 | Rotating machine |
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|---|---|---|---|---|
| JP2004282902A (en) * | 2003-03-14 | 2004-10-07 | Toyota Motor Corp | Rotary electric machine |
| JP2013078262A (en) * | 2013-01-31 | 2013-04-25 | Honda Motor Co Ltd | Motor |
| JP2013243935A (en) * | 2013-09-10 | 2013-12-05 | Honda Motor Co Ltd | Lubrication/cooling structure of electric motor |
| CN103843232A (en) * | 2012-09-25 | 2014-06-04 | 株式会社小松制作所 | Electric motor |
| JP2014183602A (en) * | 2013-03-18 | 2014-09-29 | Nissan Motor Co Ltd | Rotary electric machine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4825044Y1 (en) * | 1968-01-11 | 1973-07-21 | ||
| JP5728892B2 (en) * | 2010-11-04 | 2015-06-03 | 日産自動車株式会社 | motor |
| EP3068021B1 (en) * | 2013-12-13 | 2018-08-29 | Mitsubishi Electric Corporation | Embedded permanent magnet-type rotating electrical machine |
-
2016
- 2016-03-29 JP JP2016065015A patent/JP6190910B1/en active Active
- 2016-12-07 CN CN201611115203.0A patent/CN107240985B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004282902A (en) * | 2003-03-14 | 2004-10-07 | Toyota Motor Corp | Rotary electric machine |
| CN103843232A (en) * | 2012-09-25 | 2014-06-04 | 株式会社小松制作所 | Electric motor |
| JP2013078262A (en) * | 2013-01-31 | 2013-04-25 | Honda Motor Co Ltd | Motor |
| JP2014183602A (en) * | 2013-03-18 | 2014-09-29 | Nissan Motor Co Ltd | Rotary electric machine |
| JP2013243935A (en) * | 2013-09-10 | 2013-12-05 | Honda Motor Co Ltd | Lubrication/cooling structure of electric motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111384798A (en) * | 2018-12-26 | 2020-07-07 | 本田技研工业株式会社 | Rotating electrical machine |
| CN111435798A (en) * | 2019-01-11 | 2020-07-21 | 本田技研工业株式会社 | Rotating electrical machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107240985B (en) | 2019-03-22 |
| JP6190910B1 (en) | 2017-08-30 |
| JP2017184351A (en) | 2017-10-05 |
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