CN107231049A - Rotor liquid cooling structure - Google Patents
Rotor liquid cooling structure Download PDFInfo
- Publication number
- CN107231049A CN107231049A CN201710470648.9A CN201710470648A CN107231049A CN 107231049 A CN107231049 A CN 107231049A CN 201710470648 A CN201710470648 A CN 201710470648A CN 107231049 A CN107231049 A CN 107231049A
- Authority
- CN
- China
- Prior art keywords
- cooling structure
- liquid cooling
- rotor
- rotor liquid
- hole
- 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
- 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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention belongs to machine field, a kind of rotor liquid cooling structure is specifically provided.Present invention seek to address that in the prior art the cooling structure of rotor easily make cooling water into motor internal motor is caused damage the problem of.For this purpose, the rotor liquid cooling structure of the present invention includes being provided with the rotating shaft of shaft hole, end cap and cooling water pipe for supporting rotating shaft, one end of cooling water pipe is connected with end cap, and the other end of cooling water pipe is extended in shaft hole.Further, the one end of rotating shaft away from end cap is provided with the air-vent of connection shaft hole.The rotor liquid cooling structure of the present invention is circulated in can making water in cooling water pipe, and absorbs by absorbing the heat of cooling water pipe the heat of rotor indirectly.Therefore, the water in rotor liquid cooling structure of the invention can be circulated in cooling water pipe all the time, motor internal will not be caused to corrode and damaged into motor internal.
Description
Technical field
The invention belongs to machine field, a kind of rotor liquid cooling structure is specifically provided.
Background technology
The motor of high power density is usually associated with very high temperature rise in the process of running, in order to avoid motor is because of rotor mistake
Heat and be damaged, cooling body is usually provided with rotor to reduce the temperature rise of rotor.It is general at present to turn using in motor
Open-blind hole on axle, and cooling water is directly contacted with the blind hole inwall of rotating shaft so as to by way of rotating shaft absorption rotor heat.
But, such a type of cooling needs rotating seal to seal rotor, to avoid cooling water from entering motor internal.But,
The problem of reliability of rotatory sealing also has very big at this stage, it is easy to occur because leak causes motor impaired existing
As.
Correspondingly, this area needs a kind of new rotor cooling structure to solve the above problems.
The content of the invention
It has been that the cooling structure for solving rotor in the prior art holds to solve above mentioned problem of the prior art
Easily make cooling water into motor internal motor is caused damage the problem of, the invention provides a kind of rotor liquid cooling structure,
The motor includes being provided with first passage and second channel on casing, end cap, stator, rotor and rotating shaft, the end cap, described
It is axially disposed in rotating shaft to have shaft hole, it is characterised in that the rotor liquid cooling structure includes：Installation end, it is fixed on described
The end of motor；And colling end, it can be contained in the shaft hole, and the colling end is formed with cooling duct；Wherein,
The cooling duct is connected by the installation end with the first passage and the second channel.
In the optimal technical scheme of above-mentioned rotor liquid cooling structure, the colling end includes the first pipeline and is arranged
Second pipe on the outside of first pipeline, and the one end of first pipeline away from the installation end and the second pipe
Connection, the inner chamber of first pipeline and the ring cavity between first pipeline and the second pipe form the cooling
Passage.
In the optimal technical scheme of above-mentioned rotor liquid cooling structure, the installation end is provided with first through hole and second
Through hole, the first through hole can connect the inner chamber and the first passage, and second through hole can connect the ring cavity
With the second channel.
In the optimal technical scheme of above-mentioned rotor liquid cooling structure, the installation end and the colling end one into
Type.
In the optimal technical scheme of above-mentioned rotor liquid cooling structure, in the second pipe and institute in the shaft hole
State and be filled partially with heat-conducting medium between shaft hole.
In the optimal technical scheme of above-mentioned rotor liquid cooling structure, air-vent is provided with the rotating shaft, it is described to lead
Thermal medium is filled to the shaft hole via the air-vent.
In the optimal technical scheme of above-mentioned rotor liquid cooling structure, the heat-conducting medium is modified silicon oil.
In the optimal technical scheme of above-mentioned rotor liquid cooling structure, the air-vent is provided with vent valve.
In the optimal technical scheme of above-mentioned rotor liquid cooling structure, the vent valve is one-way ventilating valve.
In the optimal technical scheme of above-mentioned rotor liquid cooling structure, the rotor liquid cooling structure also includes shunting
Device, the installation end is fixedly connected by the current divider with the end of the motor.
It will be appreciated to those of skill in the art that in the preferred technical solution of the present invention, by that will have cooling logical
The colling end of the rotor liquid cooling structure in road is arranged in the shaft hole of rotating shaft so that the heat that rotor is produced in motor operation course
It can be conducted on colling end.By the end that the installation end of rotor liquid cooling structure is fixed on to motor so that cooling duct
It can be connected with the first passage and second channel on electric motor end cap, and then coolant can absorb colling end from rotating shaft
Heat is taken away.Therefore, the coolant (such as water) in rotor liquid cooling structure of the invention can be entered in rotor liquid cooling structure all the time
Row circulation, will not cause to corrode and damage into motor internal to motor internal.
Further, modified silicon oil is injected into shaft hole by the air-vent in rotating shaft, and makes shaft hole inwall and cooling
Hold the annular chamber between outer wall to be full of modified silicon oil, the rate of heat exchange between rotating shaft and colling end can be effectively improved, so that
The radiating rate of rotor is improved, the service life of motor is added.
Brief description of the drawings
Fig. 1 is the sectional view of the rotor liquid cooling structure of the embodiment of the present invention；
Fig. 2 is the effect diagram of the cooling water pipe of the rotor liquid cooling structure of the embodiment of the present invention.
Reference numerals list：
1st, end cap；11st, first passage；12nd, second channel；2nd, rotor；3rd, rotating shaft；31st, shaft hole；32nd, air-vent；33、
Screwed hole；4th, cooling water pipe；41st, the first pipeline；411st, inner chamber；42nd, second pipe；421st, annular chamber；43rd, installation end；431、
First through hole；432nd, the second through hole；433rd, mounting hole；434th, annular groove；5th, current divider；51st, first mouth of a river；52nd, second mouth of a river；
6th, the first sealing ring；7th, the second sealing ring；8th, the 3rd sealing ring.
Embodiment
The preferred embodiment of the present invention described with reference to the accompanying drawings.It will be apparent to a skilled person that this
A little embodiments are used only for explaining the technical principle of the present invention, are not intended to limit protection scope of the present invention.For example, although
The preferred embodiments of the invention are to carry out the rotor liquid to the present invention by taking the rotor liquid cooling structure of motor as an example with reference to accompanying drawing
What air-cooled structure was illustrated, however, it will be apparent that the rotor liquid cooling structure of the present invention, which can also be applied to other, has rotor structure
On product, such as hydraulic oil pump, those skilled in the art can make adjustment to it as needed, to adapt to specific applied field
Close, the technical scheme after adjustment will fall into this protection domain.
It should be noted that in the description of the invention, term " " center ", " on ", " under ", "left", "right", " vertical ",
The direction of instruction such as " level ", " interior ", " outer " or the term of position relationship are to be based on direction shown in the drawings or position relationship, this
Description is intended merely to facilitate, rather than indicates or imply that described device or element there must be specific orientation, with specific
Azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ", " second ", " the 3rd " are only used
In description purpose, and it is not intended that indicating or implying relative importance.
In addition it is also necessary to explanation, in the description of the invention, unless otherwise clearly defined and limited, term " peace
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected to by intermediary,
It can be the connection of two element internals.To those skilled in the art, it can understand that above-mentioned term exists as the case may be
Concrete meaning in the present invention.
As shown in figure 1, the motor of the present invention mainly includes casing (not shown), current divider 5, stator (not shown), rotor 2
With rotating shaft 3.The rotor liquid cooling structure of the present invention mainly includes rotating shaft 3, cooling water pipe 4 and current divider 5.Wherein, cooling water
The installation end 43 (lower end of cooling water pipe 4 in Fig. 1) of pipe 4 is fixedly connected with current divider 5, and the colling end of cooling water pipe 4 is (in Fig. 1
Upper part of the cooling water pipe 4 in addition to installation end 43) it is placed in rotating shaft 3.Wherein, current divider 5 is fixedly installed to casing end
Inner side, is such as installed on electric motor end cap 1.Specifically, company is fixed in the lower end of cooling water pipe 4 (referring to Fig. 2) with current divider 5 in Fig. 1
Connect, be preferably connected by screw bolts between cooling water pipe 4 and current divider 5, or those skilled in the art can also be by other
Cooling water pipe 4 is fixed on current divider 5 by any and feasible connected mode, for example, weld.In addition people in the art
Cooling water pipe 4 and current divider 5 can also be integrally molded so as an overall structure by member.
Further, as shown in figure 1, the axially disposed upper end for having rotating shaft 3 in shaft hole 31, Fig. 1 in the lower end of rotating shaft 3 is set
There is air-vent 32.Please referring also to Fig. 1 and Fig. 2, the major part of the upside of cooling water pipe 4 can extend in shaft hole 31, in dress
In the state of preparing, there is certain gap between the outer wall of cooling water pipe 4 and the inwall of shaft hole 31.Further, by saturating
Stomata 32 fills the heat-conducting medium such as modified silicon oil, the heat that rotor in motor operation course 2 is produced into the gap
Amount is quickly transmitted to cooling water pipe 4, effectively improves thermal conduction rate.Further, to prevent motor in use, turn
Modified silicon oil in axis hole 31 overflows from air-vent 32, and the upper end of air-vent 32 is provided with screwed hole 33 in Fig. 1, to install list
To vent valve (not shown).Also, the pressure and ambient atmosphere in shaft hole 31 can also be made by the one-way ventilating valve
Pressure remains identical, prevents the internal cause hypertonia of shaft hole 31 from extruding modified silicon oil.Wherein, one-way ventilating valve can be this
Art personnel it is conceivable that and any type of apparatus structure that can implement, such as axle center has the bolt of pin hole.
It should be noted that ensureing between rotating shaft 3 and cooling water pipe 4 on the premise of thermal conduction rate, art technology
Personnel can also as needed between the inwall of countershaft 3 and the outer wall of cooling water pipe 4 the size in gap suitably adjusted, it is clear that adjust
Technical scheme after whole will fall into protection scope of the present invention.It should also be noted that, ensure sealing, heat conductivity,
On the premise of soaking resistance and easy fillibility, those skilled in the art can also substitute modified silicon oil, example using other heat-conducting mediums
Such as, hydraulic oil.
As depicted in figs. 1 and 2, mainly including installation end 43 and colling end, (cooling water pipe 4 is except installation in Fig. 1 for cooling water pipe 4
Upper part outside end 43).Wherein, installation end 43 is fixedly connected by bolt with current divider 5, and colling end is ensureing cooling water pipe
In the case of gap is present between 4 outer wall and the inwall of shaft hole 31, it can be fully received in shaft hole 31.Enter one
Step, colling end include the first pipeline 41 and second pipe 42, and the first pipeline 41 and second pipe 42 lower end with installation
End 43 is fixedly connected, it is preferable that the first pipeline 41, second pipe 42 and installation end 43 are integrally formed, or people in the art
First pipeline 41 and second pipe 42 can be also fixed on installation end 43 by member as desired by other connected modes, for example will
The mode that first pipeline 41, second pipe 42 are connected through a screw thread or welded is fixed on installation end 43.
As shown in figure 1, the first pipeline 41 is located in second pipe 42, and upper end and the second pipe 42 of the first pipeline 41
It is connected so that the annular chamber 421 between the pipeline 41 of inner chamber 411 and first and second pipe 42 of the first pipeline 41 constitutes cooling
Passage.In addition those skilled in the art can also be as needed, and annular chamber 421 is arranged to the ring cavity of other structures, such as edge
The ring cavity of the screw type of the axis direction of first water pipe 41.
As shown in figure 1, being provided with first passage 11 and second channel 12 on end cap 1.First mouth of a river is provided with current divider 5
51 and second mouth of a river 52, and when current divider 5 is fixed on end cap 1, first mouth of a river 51 can be connected with first passage 11, the
Two mouths of a river 52 can be connected with second channel 12.In a kind of possible embodiment, it is provided with casing and is mainly used in cooling
The spiral shape cooling duct of stator is simultaneously provided with two openings passed in and out for coolant.By by spiral shape cooling duct and end cap
First passage 11 on 1 is connected with second channel 12, you can to realize coolant while stator is cooled down, by making coolant
Into the mode for the cooling water pipe 4 being placed in rotating shaft, coolant is set further to cool down rotor by rotating shaft 3.Further, preferably
Ground, current divider 5 is bolted to connection with end cap 1, or those skilled in the art can also be any and feasible by other
Connected mode by current divider 5 be fixed to end cap 1 on, for example weld.In addition those skilled in the art can also be by end cap 1
An overall structure is integrally molded so as with current divider 5.It should be appreciated that in a preferred embodiment of the invention, current divider 5
It is applied not only to the installation end 43 of cooling water pipe 4 being fixed on end cap 1, is additionally operable to the first passage 11 and second on end cap 1
Passage 12 is connected with inner chamber 411 and annular chamber 421 respectively, coolant is flowed through inner chamber 411 and annular chamber 421.
As depicted in figs. 1 and 2, first through hole 431, the second through hole 432 and mounting hole 433 are provided with installation end 43.Its
In, first through hole 431 is connected with inner chamber 411, and the second through hole 432 is connected with annular chamber 421.Also, it is logical in installation end 43
Cross through mounting hole 433 when being bolted on current divider 5, first through hole 431 is connected with first mouth of a river 51, the second through hole
432 are connected with second mouth of a river 52, and then first passage 11 is connected with inner chamber 411, and second channel 12 is connected with annular chamber 412
It is logical.So that coolant (such as water) can enter inner chamber 411 from first passage 11 through first mouth of a river 51 and first through hole 431, then
Annular chamber 421 is flowed through to flow out from second channel 12 through the second through hole 432 and second mouth of a river 52.Or those skilled in the art may be used also
So that coolant flows into cooling duct from second channel 12, flowed out from first passage 11.
Fig. 1 and Fig. 2 are further regarded to, rotor liquid cooling structure of the invention also includes being placed in annular groove on installation end 43
The first sealing ring 6 in 434.In the assembled state, current divider 5 and installation end 43 can compress the first sealing ring 6, prevent
Modified silicon oil in shaft hole 31 is leaked from the junction of current divider 5 and installation end 43.Further, between current divider 5 and end cap 1
The second sealing ring 7 is provided with, for preventing the coolant in first passage 11 and second channel 12 from entering motor internal to motor
Internal electric elements cause to damage.Further, the lower end of rotating shaft 3 has been disposed radially the 3rd sealing ring 8 for preventing in Fig. 1
Modified silicon oil in rotation stop axis hole 31 enters motor internal, changes sealing ring preferably rotatory sealing.
It will be appreciated to those of skill in the art that because the sealing of modified silicon oil is better than water, so passing through current divider 5
Rotating seal ring between rotating shaft 3 just effectively can play sealing function to modified silicon oil.Those skilled in the art can also
Understand, because modified silicon oil has good dielectric strength, even if modified silicon oil entered motor internal also will not be right
Motor causes to damage.It will be readily appreciated by those skilled in the art that end cap 1 and cooling water pipe 4 are attached by current divider 5,
The sealing property between the processing technology of end cap 1 and each part can effectively be optimized.
Those skilled in the art are also understood that, in the preferred technical solution of the present invention, pass through shaft hole 13
The heat that rotor is produced can be quickly transmitted to cooling water pipe 4 by the modified silicon oil between the outer wall of inwall and cooling water pipe 4,
Then the heat of cooling water pipe 4 is taken away by flowing through the coolant in cooling water pipe 4.So, rotor liquid cold junction of the invention
Coolant in structure can be circulated in cooling water pipe 4 all the time, will not enter motor internal and corrosion is caused to motor internal
And damage.
It should be noted that the above coolant is preferably water, or those skilled in the art can be with root
According to needs using other coolants, such as hydraulic oil.
So far, combined preferred embodiment shown in the drawings describes technical scheme, still, this area
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these embodiments.Without departing from this
On the premise of the principle of invention, those skilled in the art can make equivalent change or replacement to correlation technique feature, these
Technical scheme after changing or replacing it is fallen within protection scope of the present invention.
Claims (10)
1. a kind of rotor liquid cooling structure, the motor includes setting on casing, end cap, stator, rotor and rotating shaft, the end cap
Being equipped with axially disposed in first passage and second channel, the rotating shaft has shaft hole, it is characterised in that the rotor liquid cold junction
Structure includes：
Installation end, it is fixed on the end of the motor；And
Colling end, it can be contained in the shaft hole, and the colling end is formed with cooling duct；
Wherein, the cooling duct is connected by the installation end with the first passage and the second channel.
2. rotor liquid cooling structure according to claim 1, it is characterised in that the colling end include the first pipeline with
And it is sheathed on the second pipe on the outside of first pipeline, and the one end of first pipeline away from the installation end and described the
Two pipeline communications,
The inner chamber of first pipeline and the ring cavity between first pipeline and the second pipe form the cooling
Passage.
3. rotor liquid cooling structure according to claim 2, it is characterised in that the installation end is provided with first through hole
With the second through hole, the first through hole can connect the inner chamber and the first passage, and second through hole can connect institute
State ring cavity and the second channel.
4. rotor liquid cooling structure according to claim 1, it is characterised in that the installation end and the colling end one
It is body formed.
5. the rotor liquid cooling structure according to any one of claim 2 to 4, it is characterised in that in the shaft hole
Heat-conducting medium is filled partially between the second pipe and the shaft hole.
6. rotor liquid cooling structure according to claim 5, it is characterised in that be provided with air-vent in the rotating shaft,
The heat-conducting medium is filled to the shaft hole via the air-vent.
7. rotor liquid cooling structure according to claim 6, it is characterised in that the heat-conducting medium is modified silicon oil.
8. rotor liquid cooling structure according to claim 6, it is characterised in that the air-vent is provided with vent valve.
9. rotor liquid cooling structure according to claim 8, it is characterised in that the vent valve is one-way ventilating valve.
10. rotor liquid cooling structure according to any one of claim 1 to 9, it is characterised in that the rotor
Liquid cooling structure also includes current divider, and the installation end is fixedly connected by the current divider with the end of the motor.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710470648.9A CN107231049B (en) | 2017-06-20 | 2017-06-20 | Liquid cooling structure of motor rotor |
| PCT/CN2018/078234 WO2018233319A1 (en) | 2017-06-20 | 2018-03-07 | Liquid-cooling structure for motor rotor |
| TW107208277U TWM570352U (en) | 2017-06-20 | 2018-06-20 | Motor rotor liquid cooling structure |
| TW107121189A TW201906286A (en) | 2017-06-20 | 2018-06-20 | Liquid-cooling structure of motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710470648.9A CN107231049B (en) | 2017-06-20 | 2017-06-20 | Liquid cooling structure of motor rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107231049A true CN107231049A (en) | 2017-10-03 |
| CN107231049B CN107231049B (en) | 2023-07-07 |
Family
ID=59935958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710470648.9A Active CN107231049B (en) | 2017-06-20 | 2017-06-20 | Liquid cooling structure of motor rotor |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN107231049B (en) |
| TW (2) | TW201906286A (en) |
| WO (1) | WO2018233319A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018233319A1 (en) * | 2017-06-20 | 2018-12-27 | 上海蔚来汽车有限公司 | Liquid-cooling structure for motor rotor |
| CN109301960A (en) * | 2018-10-17 | 2019-02-01 | 河南森源重工有限公司 | A kind of electric car and water-cooled machine |
| CN111564927A (en) * | 2020-05-18 | 2020-08-21 | 珠海格力电器股份有限公司 | Hollow shaft sealing ring, hollow shaft, rotor structure, motor and electric automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110254264A (en) * | 2019-07-04 | 2019-09-20 | 昆山惠禾新能源科技有限公司 | Liquid cooling terminal and charging gun |
| TWI763184B (en) * | 2020-12-16 | 2022-05-01 | 國立成功大學 | Motor and rotation shaft cooling device thereof |
| CN113982963A (en) * | 2021-10-20 | 2022-01-28 | 惠州市禾新智能科技有限公司 | Game computer water pump and noise reduction structure thereof |
| CN114071969A (en) * | 2021-11-18 | 2022-02-18 | 赵文龙 | Converter water cooling system |
| CN114244022A (en) * | 2021-12-13 | 2022-03-25 | 陕西航空电气有限责任公司 | Motor with stator winding isolated from conductive cooling liquid |
| CN114221490B (en) * | 2021-12-22 | 2023-12-08 | 浙江旋风工具制造有限公司 | Miniature special motor |
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|---|---|---|---|---|
| WO2018233319A1 (en) * | 2017-06-20 | 2018-12-27 | 上海蔚来汽车有限公司 | Liquid-cooling structure for motor rotor |
| CN109301960A (en) * | 2018-10-17 | 2019-02-01 | 河南森源重工有限公司 | A kind of electric car and water-cooled machine |
| CN111564927A (en) * | 2020-05-18 | 2020-08-21 | 珠海格力电器股份有限公司 | Hollow shaft sealing ring, hollow shaft, rotor structure, motor and electric automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107231049B (en) | 2023-07-07 |
| TW201906286A (en) | 2019-02-01 |
| WO2018233319A1 (en) | 2018-12-27 |
| TWM570352U (en) | 2018-11-21 |
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