CN207117341U - Rotor and motor with oil cooling structure - Google Patents
Rotor and motor with oil cooling structure Download PDFInfo
- Publication number
- CN207117341U CN207117341U CN201720775569.4U CN201720775569U CN207117341U CN 207117341 U CN207117341 U CN 207117341U CN 201720775569 U CN201720775569 U CN 201720775569U CN 207117341 U CN207117341 U CN 207117341U
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- iron core
- oil
- rotating shaft
- rotor
- balance plate
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- Motor Or Generator Cooling System (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model provides a kind of rotor and motor with oil cooling structure, rotor of the present utility model with oil cooling structure includes rotating shaft, it is cored in being pressed in rotating shaft, in being embedded with magnet steel in iron core, also include the oil inlet passage being located in rotating shaft, it is connected via at least one end of rotating shaft with outside oil feeding line；Outside the both ends of iron core two balance plates are fixed with suit in rotating shaft；Formed with cooling duct in balance plate, it is communicated in the end of magnet steel, and be connected close to the side of balance plate radial center with oil inlet passage, formed with the radial arrangement along balance plate and penetrated in the side of the remote balance plate radial center of cooling duct to the oil-out outside balance plate.Rotor of the present utility model with oil cooling structure, cooling to rotor can be achieved, can solve the problems, such as that rotor heat is difficult to distribute, and effectively prevent that iron core temperature rise is too high, prevent that magnet steel from demagnetizing phenomenon, extend the service life of motor.
Description
Technical field
Technical field of motors is the utility model is related to, more particularly to a kind of rotor with oil cooling structure.Meanwhile this
Utility model further relates to a kind of motor for being equiped with the rotor with oil cooling structure.
Background technology
With the development of new-energy automobile technology, New energy automobile motor towards high power, high power density, high pulling torque,
High rotating speed, the direction of high integration are progressively developed.And as power of motor and torque density increase, the motor feels hot can be into multiplication
Long, the temperature rise of motor entirety or local temperature rise are too high, not only result in Electric machine structure part deformation, can also make motor pressure-resistant and insulating properties
It can reduce, have a strong impact on the service life of motor.
At present extensively using magneto on automobile, in magneto, high performance neodymium iron boron is conventional magnetic material
Material, but its maximum heatproof numerical value is not high, and as the rise of temperature, the performance of magnet steel can reduce along certain ratio, this just makes
Obtain the performance of motor gradually reduces with the rise of temperature.If the temperature of motor has exceeded the maximum heatproof numerical value of magnet steel,
Irreversible demagnetization will occur, cause the permanent performance of magnet steel to lower.
Therefore, in order to improve the performance of motor, cooling structure is generally set in motor, to prevent motor entirety or local
Temperature rise is too high.Existing cooling structure have it is a variety of, using it is more be that casing liquid is cold, and in order to further improve the power of motor
And torque density, the type of cooling of generally use oil cooling.Also, because stator winding is main pyrotoxin, and the heating of rotor
Measure less, therefore the existing oil cooling type of cooling is the radiating for stator winding, without being radiated for rotor.
In order to prevent motor entirety or local temperature rise too high, the temperature of general control stator winding is no more than the heatproof of magnet steel
Grade, but the loss of different types of rotor also differs, and for example, P2 motors, the eddy-current loss of magnet steel is significantly greater,
So that the more other kinds of motor of the temperature of magnet steel is high, the phenomenon of demagnetization happens occasionally；For another example Hairpin motors, close to inner ring
Coil temperature it is higher than the temperature of outer ring, because inner ring is adjacent to magnet steel, it is possible to make the temperature of magnet steel flat higher than coil
Equal temperature, or even permanent damages magnet steel.And in order to ensure that magnet steel is not compromised, typically it is to provide the higher temperature resistant grade of magnet steel
Go to make up, cost can be greatly increased.
In addition, the heat of rotor itself will not typically cause substantial injury to rotor, but the heat of stator winding
Rotor can be transferred to, and due to the seal of motor, the heat assembled on rotor is difficult to distribute, and the time one is grown, the temperature of rotor
Degree close to the temperature of stator winding, can have the risk of damage magnet steel.
Utility model content
In view of this, the utility model is directed to a kind of rotor with oil cooling structure, and motor is turned with realizing
Son cools.
To reach above-mentioned purpose, what the technical solution of the utility model was realized in：
A kind of rotor with oil cooling structure, including rotating shaft, and be pressed in the iron core in the rotating shaft, in the iron
Core built-in mosaic is equipped with along the axial arranged of the iron core and extends to the magnet steel at the iron core both ends, in addition to：
Oil inlet passage, it is located at along the axial direction of the rotating shaft in the rotating shaft, the oil inlet passage can be via the rotating shaft
At least one end is connected with outside oil circuit, with the fuel feeding into the oil inlet passage；
Balance plate, two in the rotating shaft are connected in suit outside the both ends of the iron core, and respectively with the iron core
Both ends of the surface sealing connect；
Cooling duct, be formed in the balance plate, and be communicated in the end of the magnet steel, the cooling duct close to
The side of the balance plate radial center is connected with the oil inlet passage, in the remote balance plate footpath of the cooling duct
Formed with the radial arrangement along the balance plate and penetrated to the side at center to the oil-out outside the balance plate.
Further, the cooling duct is via the first interface channel and the second interface channel mutually concatenated and the oil-feed
Passage connects；First interface channel is formed between the rotating shaft and the iron core, and along the axial arranged of the rotating shaft,
Second interface channel is connected radially to first interface channel and described in the rotating shaft, and along the rotating shaft
Between oil inlet passage.
Further, first interface channel is groove on the rotating shaft outer peripheral face, one end of the groove
Extend outside the end face of the iron core and be connected with the cooling duct.
Further, the length that the groove extends outside the iron core end face is 1~3mm.
Further, second interface channel is in the axial centre position of the iron core.
Further, the cooling duct includes being formed at annular in shape on the balance plate and is communicated in the magnet steel
First subchannel of end, the inner side of first subchannel are connected via the first jet with first interface channel, institute
State the outside that oil-out is connected in first subchannel.
Further, on the balance plate, in the inner side of first subchannel formed with annular in shape and be communicated in institute
The second subchannel of core ends is stated, first jet is connected to the outside of second subchannel, and described second point logical
The inner side in road is connected via the second jet with first interface channel.
Further, first interface channel, second jet, first jet and the oil-out
At least one is along the circumferentially spaced multiple of the iron core.
Further, the axial arranged lightening hole along the iron core is provided with the iron core.
Relative to prior art, the utility model has the advantage that：
(1) rotor described in the utility model with oil cooling structure, by setting oil inlet passage in rotating shaft, and
Cooling duct is set on the balance plate at iron core both ends, the cooling to rotor can be achieved so that fluid can contact with magnet steel,
Oil cooling directly is carried out to magnet steel, can solve the problems, such as that rotor heat is difficult to distribute, and effectively prevents that iron core temperature rise is too high, is prevented
Only magnet steel demagnetizes phenomenon, extends the service life of motor.
(2) cooling duct is connected via the first interface channel and the second interface channel with oil inlet passage, can increase fluid with
The contact area of rotating shaft, improve heat-sinking capability.
(3) first interface channels are the groove on rotating shaft outer peripheral face, simple in construction, easy to process.
(4) length that groove extends outside iron core end face is 1~3mm, and fluid pressure can be reduced in limited size range
Power is lost.
(5) second interface channels are located at the axial centre position of iron core, and cooling oil can be made to be divided to two road direction rotating shafts after entering
Both ends are flowed, so that the emitted dose balance of rotating shaft both ends cooling oil, effectively prevents that local temperature rise is too high.
(6) first subchannels are annular in shape and connected with magnet steel end, and oil cooling, increase and magnet steel can be directly carried out to magnet steel
Contact area, heat-sinking capability is improved, so that the even irreversible demagnetization of magnet steel hydraulic performance decline caused by effectively preventing temperature rise.
(7) the second subchannel is set, the contact area of cooling duct and core ends can be effectively increased, further improves and dissipates
Heat energy power.
At least one is the week along iron core in (8) first interface channels, the second jet, the first jet and oil-out
To spaced apart multiple, fluid flowing velocity and flow can be improved, so as to further improve heat-sinking capability.
(9) lightening hole is set on iron core, iron core weight can be mitigated, meets lightweight demand for development.
Another object of the present utility model is to propose a kind of motor, including is pressed with the motor case of stator winding, also
Including rotating the rotor with oil cooling structure as described above in the motor case.
Motor described in the utility model and the foregoing rotor with oil cooling structure relative to prior art with
Identical beneficial effect, will not be repeated here.
Brief description of the drawings
Form a part of accompanying drawing of the present utility model to be used for providing further understanding to of the present utility model, this practicality is new
The schematic description and description of type is used to explain the utility model, does not form to improper restriction of the present utility model.
In accompanying drawing：
Fig. 1 is the sectional view of the rotor with oil cooling structure described in the utility model embodiment；
Fig. 2 is Fig. 1 Section A-A figure；
Fig. 3 is Fig. 1 B-B sectional views；
Description of reference numerals：
1- rotating shafts, 101- oil inlet passages, the interface channels of 102- first, the interface channels of 103- second, 2- iron cores, 201- lead to
Groove, 202- lightening holes, 3- balance plates, the subchannels of 301- first, 3011- oil-outs, the jets of 3012- first, 302- second divide
Passage, the jets of 3021- second, 4- magnet steel.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can
To be mutually combined.
Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Embodiment one
The present embodiment is related to a kind of rotor with oil cooling structure, mainly leads to including rotating shaft, iron core, magnet steel, oil-feed
Road, balance plate and cooling duct, wherein：Iron core is pressed in rotating shaft, magnet steel flush-mounted in iron core interior edge iron core it is axial arranged simultaneously
Extend to iron core both ends；Oil inlet passage is located in rotating shaft and along the axially extending arrangement of rotating shaft, its via rotating shaft at least one end
It is connected with outside oil circuit, with the fuel feeding into oil inlet passage；Balance plate is connected in two in rotating shaft for suit, two balance plates point
It is not arranged in outside the both ends of iron core, and connects with the both ends of the surface sealing of iron core；Cooling duct is formed in balance plate, with magnet steel
End connects, and it is connected close to the side of balance plate radial center with oil inlet passage, and one away from balance plate radial center
Side is formed with oil-out, outside radial arrangement and insertion to balance plate of the oil-out along balance plate.
The rotor with oil cooling structure of the present embodiment, by setting oil inlet passage in rotating shaft, and in iron core two
Cooling duct is set on the balance plate at end, the cooling to rotor can be achieved so that fluid can contact with magnet steel, directly to magnetic
Steel carries out oil cooling, can solve the problems, such as that rotor heat is difficult to distribute, and effectively prevents that iron core temperature rise is too high, prevents magnet steel from moving back
Magnetic phenomenon occurs, and extends the service life of motor.
Based on above design philosophy, the rotor with oil cooling structure of the present embodiment as shown in Figure 1 to Figure 2, rotating shaft 1
It is substantially cylindrical, it is arranged with iron core 2 and the balance plate 3 positioned at the both ends of iron core 2 in the outer circumference of rotating shaft 1.Iron core 2 is substantially
It is then logical flush-mounted in this in multiple axial arranged grooves 201 along iron core 2 that are circumferentially with of iron core 2, magnet steel 4 in annulus column
In groove 201.
Foregoing oil inlet passage 101 is located at the centre of rotating shaft 1, its axially extending arrangement along rotating shaft 1, oil inlet passage
101 one end extends to an end face of rotating shaft 1, and the other end extends to the centre of iron core 2, and oil inlet passage 101 is set herein
The effect put is connected with outside oil feeding line, with the fuel feeding into oil inlet passage 101.In the structure, oil inlet passage 101 may be used also
Extend to another end face of rotating shaft 1 so that outside oil circuit simultaneously from the both ends of rotating shaft 1 into oil inlet passage 101 fuel feeding.
Foregoing cooling duct is via the first interface channel 102 and the second interface channel 103 and oil inlet passage mutually concatenated
101 connections；Specifically, the first interface channel is formed between rotating shaft 1 and iron core 2 for 102, and on the outer peripheral face of rotating shaft 1
Groove, it is axial arranged along rotating shaft 1, and its one end is extended and is connected outside the end face of iron core 2 with cooling duct.The structure
In, the first interface channel 102 is the groove on the outer peripheral face of rotating shaft 1, simple in construction, easy to process.More specifically, groove prolongs
The length stretched out outside the end face of iron core 2 is preferably 1~3mm, oil liquid pressure loss can be so reduced in limited size range, such as
The length dimension that fruit groove extends outside the end face of iron core 2 is too small, can increase the pressure loss, and limited it by the size of balance plate 3
Size can not be excessive.
For the second foregoing interface channel 103 in rotating shaft 1, it is connected to the first interface channel 102 and oil inlet passage 101
Between, and along the radial arrangement of rotating shaft 1.Specifically, the second interface channel 103 is in the axial centre position of iron core 2, so may be used
Make cooling oil be divided to the both ends of two road direction rotating shafts 1 to flow after entering, can balance the emitted dose of the both ends cooling oil of rotating shaft 1, it is effectively anti-
Only local temperature rise is too high, and certain second interface channel 103 can be also located between the first interface channel 102 and oil inlet passage 101
Other positions.
In above structure, cooling duct is via the first interface channel 102 and the second interface channel 103 and oil inlet passage 101
Connection, the contact area of fluid and rotating shaft 1 can be increased, improve heat-sinking capability.Certain cooling duct can also pass through other structures
Passage is connected with oil inlet passage 101.
With reference to shown in Fig. 3, cooling duct includes being formed at annular in shape on balance plate 3 and is communicated in the end of magnet steel 4
First subchannel 301, oil-out 3011 are connected in the outside of the first subchannel 301, and the first jet 3012 passes through first
Subchannel 301 connects with oil-out 3011 and is arranged at the inner side of the first subchannel 301, the jet of oil-out 3011 and first
3012 respectively along the radial arrangement of balance plate 3, and the structure directly can carry out oil cooling to magnet steel 4, so as to effectively prevent temperature rise from causing
The hydraulic performance decline of magnet steel 4 even irreversible demagnetization.
In the inner side of the first subchannel 301 formed with annular in shape and be communicated in the second subchannel 302 of the end of iron core 2, the
One jet 3012 is connected with the outside of the second subchannel 302, and the inner side of the second subchannel 302 is via the second jet 3021
It is connected with the first interface channel 102, wherein, radial arrangement of second jet 3021 along balance plate 3.Set on balance plate 3
The second subchannel 302 is put, the contact area of cooling duct and the end of iron core 2 can be effectively increased, heat-sinking capability is improved, may be used also certainly
The second subchannel 302 is not provided with, and makes the inner side of the first subchannel 301 via the first jet 3012 and the first interface channel
102 connections.
In above structure, the first interface channel 102, the second jet 3021, the first jet 3012 and oil-out
3011 at least one are along the circumferentially spaced multiple of iron core 2, fluid flowing velocity and flow can be so improved, so as to enter
One step improves heat-sinking capability, and radiating is uniform.
It is last it should be noted that in being additionally provided with the axial arranged lightening hole 202 along iron core 2, lightening hole on iron core 2
The longitudinal center line of 202 specially ring iron cores 2 is spaced apart multiple, so can mitigate iron on the basis of structural strength is ensured
The weight of core 2, meets lightweight demand for development.
Embodiment two
The present embodiment is related to a kind of motor, including is pressed with the motor case of stator winding, in addition to rotates and be located at motor
In casing such as the rotor with oil cooling structure of embodiment one.
The motor of the present embodiment, by using the rotor with oil cooling structure of embodiment one, it can effectively reduce electricity
Machine temperature rise, prevent magnet steel hydraulic performance decline or even irreversible demagnetization occurs, improve the use reliability of motor, extend the use of motor
Life-span.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (10)
1. a kind of rotor with oil cooling structure, including rotating shaft (1), and be pressed in the iron core (2) in the rotating shaft (1),
It is embedded with along the axial arranged of the iron core (2) in the iron core (2) and extends to the magnet steel at the iron core (2) both ends
(4), it is characterised in that also include：
Oil inlet passage (101), is located in the rotating shaft (1) along the axial direction of the rotating shaft (1), and the oil inlet passage (101) can be through
It is connected by least one end of the rotating shaft (1) with outside oil circuit, with to the oil inlet passage (101) interior fuel feeding；
Balance plate (3), two in the rotating shaft (1) are connected in suit outside the both ends of the iron core (2), and respectively with it is described
The both ends of the surface sealing of iron core (2) connects；
Cooling duct, it is formed in the balance plate (3), and is communicated in the end of the magnet steel (4), the cooling duct is close
It is connected in the side of the balance plate (3) radial center with the oil inlet passage (101), the remote institute in the cooling duct
The side of balance plate (3) radial center is stated formed with the radial arrangement along the balance plate (3) and is penetrated to the balance plate
(3) oil-out (3011) outside.
2. the rotor according to claim 1 with oil cooling structure, it is characterised in that：The cooling duct is via phase
The first interface channel (102) and the second interface channel (103) of concatenation are connected with the oil inlet passage (101)；Described first connects
Road (102) are connected to be formed between the rotating shaft (1) and the iron core (2), and along the axial arranged of the rotating shaft (1), it is described
Second interface channel (103) leads in the rotating shaft (1), and along first connection that is connected radially to of the rotating shaft (1)
Between road (102) and the oil inlet passage (101).
3. the rotor according to claim 2 with oil cooling structure, it is characterised in that：First interface channel
(102) it is groove on the rotating shaft (1) outer peripheral face, one end of the groove extends outside the end face of the iron core (2),
And it is connected with the cooling duct.
4. the rotor according to claim 3 with oil cooling structure, it is characterised in that：The groove extends described
Length outside iron core (2) end face is 1~3mm.
5. the rotor according to claim 2 with oil cooling structure, it is characterised in that：Second interface channel
(103) it is in the axial centre position of the iron core (2).
6. the rotor with oil cooling structure according to any one of claim 2 to 5, it is characterised in that：It is described cold
But passage includes the first subchannel annular in shape and being communicated in the magnet steel (4) end being formed on the balance plate (3)
(301), the inner side of first subchannel (301) connects via the first jet (3012) and first interface channel (102)
Connect, the oil-out (3011) is connected in the outside of first subchannel (301).
7. the rotor according to claim 6 with oil cooling structure, it is characterised in that：On the balance plate (3),
In the inner side of first subchannel (301) formed with annular in shape and be communicated in the second subchannel of the iron core (2) end
(302), first jet (3012) is connected to the outside of second subchannel (302), second subchannel (302)
Inner side be connected via the second jet (3021) with first interface channel (102).
8. the rotor according to claim 7 with oil cooling structure, it is characterised in that：First interface channel
(102), second jet (3021), first jet (3012) and the oil-out (3011) at least one are
Along the circumferentially spaced multiple of the iron core (2).
9. the rotor according to claim 1 with oil cooling structure, it is characterised in that：Set on the iron core (2)
There is the axial arranged lightening hole (202) along the iron core (2).
10. a kind of motor, including it is pressed with the motor case of stator winding, it is characterised in that：Also include rotating being located at the electricity
The rotor as claimed in any one of claims 1-9 wherein with oil cooling structure in machine casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720775569.4U CN207117341U8 (en) | 2017-06-29 | 2017-06-29 | Rotor and motor with oil cooling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720775569.4U CN207117341U8 (en) | 2017-06-29 | 2017-06-29 | Rotor and motor with oil cooling structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN207117341U true CN207117341U (en) | 2018-03-16 |
| CN207117341U8 CN207117341U8 (en) | 2018-06-15 |
Family
ID=61587087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720775569.4U Active CN207117341U8 (en) | 2017-06-29 | 2017-06-29 | Rotor and motor with oil cooling structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207117341U8 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108512363A (en) * | 2018-04-10 | 2018-09-07 | 浙江兴轮电驱动有限公司 | A kind of oil-cooled motor |
| CN109167451A (en) * | 2018-09-21 | 2019-01-08 | 薛春红 | A kind of motor with rotor temperature equalization cooling device |
| CN109742883A (en) * | 2019-01-28 | 2019-05-10 | 曲阜天科电动科技有限公司 | A kind of cooling oil path of oil-cooled motor rotor |
| CN110707843A (en) * | 2019-08-09 | 2020-01-17 | 武汉理工大学 | Motor cooling structure and permanent magnet synchronous motor for electric automobile |
| CN110875651A (en) * | 2018-09-03 | 2020-03-10 | 丰田自动车株式会社 | Rotor |
| CN111293809A (en) * | 2018-12-10 | 2020-06-16 | 本田技研工业株式会社 | Rotor |
| CN112311152A (en) * | 2019-07-31 | 2021-02-02 | 华擎机械工业股份有限公司 | Electromechanical device with internal cooling mechanism |
| CN112769268A (en) * | 2020-12-30 | 2021-05-07 | 华为技术有限公司 | Power transmission assembly and power assembly |
| JP2021170877A (en) * | 2020-04-16 | 2021-10-28 | 三菱電機株式会社 | Rotary electric machine |
| CN114552832A (en) * | 2020-11-27 | 2022-05-27 | 比亚迪股份有限公司 | Electric machine |
| WO2022204940A1 (en) * | 2021-03-30 | 2022-10-06 | 舍弗勒技术股份两合公司 | Motor having cooling channel |
| CN115173602A (en) * | 2022-07-28 | 2022-10-11 | 小米汽车科技有限公司 | Rotor subassembly, motor and vehicle |
| US11581785B2 (en) | 2019-06-18 | 2023-02-14 | Huawei Digital Power Technologies Co., Ltd. | Stator core, housing, motor cooling system of electric vehicle, and electric vehicle |
-
2017
- 2017-06-29 CN CN201720775569.4U patent/CN207117341U8/en active Active
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108512363B (en) * | 2018-04-10 | 2020-08-18 | 浙江兴轮电驱动有限公司 | Oil-cooled motor |
| CN108512363A (en) * | 2018-04-10 | 2018-09-07 | 浙江兴轮电驱动有限公司 | A kind of oil-cooled motor |
| CN110875651A (en) * | 2018-09-03 | 2020-03-10 | 丰田自动车株式会社 | Rotor |
| CN109167451A (en) * | 2018-09-21 | 2019-01-08 | 薛春红 | A kind of motor with rotor temperature equalization cooling device |
| CN111293809A (en) * | 2018-12-10 | 2020-06-16 | 本田技研工业株式会社 | Rotor |
| CN109742883A (en) * | 2019-01-28 | 2019-05-10 | 曲阜天科电动科技有限公司 | A kind of cooling oil path of oil-cooled motor rotor |
| US11581785B2 (en) | 2019-06-18 | 2023-02-14 | Huawei Digital Power Technologies Co., Ltd. | Stator core, housing, motor cooling system of electric vehicle, and electric vehicle |
| CN112311152A (en) * | 2019-07-31 | 2021-02-02 | 华擎机械工业股份有限公司 | Electromechanical device with internal cooling mechanism |
| CN110707843A (en) * | 2019-08-09 | 2020-01-17 | 武汉理工大学 | Motor cooling structure and permanent magnet synchronous motor for electric automobile |
| JP2021170877A (en) * | 2020-04-16 | 2021-10-28 | 三菱電機株式会社 | Rotary electric machine |
| CN114552832A (en) * | 2020-11-27 | 2022-05-27 | 比亚迪股份有限公司 | Electric machine |
| CN114552832B (en) * | 2020-11-27 | 2023-09-05 | 比亚迪股份有限公司 | Motor with a motor housing |
| CN112769268A (en) * | 2020-12-30 | 2021-05-07 | 华为技术有限公司 | Power transmission assembly and power assembly |
| WO2022204940A1 (en) * | 2021-03-30 | 2022-10-06 | 舍弗勒技术股份两合公司 | Motor having cooling channel |
| CN115173602A (en) * | 2022-07-28 | 2022-10-11 | 小米汽车科技有限公司 | Rotor subassembly, motor and vehicle |
| CN115173602B (en) * | 2022-07-28 | 2023-08-29 | 小米汽车科技有限公司 | Rotor assembly, motor and vehicle |
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| Publication number | Publication date |
|---|---|
| CN207117341U8 (en) | 2018-06-15 |
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| CU01 | Correction of utility model patent | ||
| CU01 | Correction of utility model patent |
Correction item: Inventor Correct: Pascal Verma|He Lina|Su Fuyao False: He Lina|Su Fuyao Number: 11-02 Page: The title page Volume: 34 Correction item: Inventor Correct: Pascal Verma|He Lina|Su Fuyao False: He Lina|Su Fuyao Number: 11-02 Volume: 34 Volume: 34 |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200427 Address after: 071000 No.75, Dongsheng Road, Lianchi District, Baoding City, Hebei Province Patentee after: Beehive electric drive technology Hebei Co., Ltd Address before: 071000 No. 2266 Chaoyang South Street, Hebei, Baoding Patentee before: Great Wall Motor Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210730 Address after: 071000 in No.75 Dongsheng Road, Lianchi District, Baoding City, Hebei Province Patentee after: Baoding R & D branch of honeycomb transmission system (Jiangsu) Co.,Ltd. Address before: 071000 No.75 Dongsheng Road, Lianchi District, Baoding City, Hebei Province Patentee before: Beehive electric drive technology Hebei Co.,Ltd. |