CN109617319A - Oily air-cooled structure in a kind of flat wire motor slot - Google Patents
Oily air-cooled structure in a kind of flat wire motor slot Download PDFInfo
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- CN109617319A CN109617319A CN201910104947.XA CN201910104947A CN109617319A CN 109617319 A CN109617319 A CN 109617319A CN 201910104947 A CN201910104947 A CN 201910104947A CN 109617319 A CN109617319 A CN 109617319A
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- 238000004804 winding Methods 0.000 claims abstract description 92
- 238000001816 cooling Methods 0.000 claims abstract description 86
- 210000003781 tooth socket Anatomy 0.000 claims abstract description 15
- 238000003466 welding Methods 0.000 claims description 4
- 235000003283 Pachira macrocarpa Nutrition 0.000 claims description 3
- 241001083492 Trapa Species 0.000 claims description 3
- 235000014364 Trapa natans Nutrition 0.000 claims description 3
- 235000009165 saligot Nutrition 0.000 claims description 3
- 210000000515 tooth Anatomy 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 239000003292 glue Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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
- H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor Or Generator Cooling System (AREA)
- Windings For Motors And Generators (AREA)
Abstract
The invention discloses air-cooled structures oily in a kind of flat wire motor slot, the directly cooling stator winding of oil can be led to by cooling oil path in slot, cooling oil path is formed by the gap in gap, flat wire and distance sleeve between flat wire and the gap of flat wire and stator tooth socket inner wall in the slot.There is bayonet arrangement to separate on motor stator in stator slot, and winding is to form the runner between flat wire, and the flow channel shape is regular, it may have lesser drag losses.The method good heat dissipation effect, better than the direct cold effect of oil of round wires winding, or the scheme of the existing end heat-conducting glue of flat wire motor, the nominal torque and rated power of flat wire motor can be greatly improved, it improves peak torque, peak power and its holds time, to improve the power density of motor, torque density and comprehensive performance.
Description
Technical field
The invention belongs to motors and Electric Drive field, are related to the oily air-cooled structure more particularly to a kind of flat wire of a kind of motor
The direct oil-cooled stator structure of motor.
Background technique
It is well known that the motor or generator that are mounted on automobile include rotor and the stator with stator winding.
Wherein by generating electric current in the stator windings to drive rotor to rotate, generator is flowed through motor by what rotor rotation generated
The electric current of stator winding is generated electricity, and when electric current generates electric current in the stator windings, stator winding can generate heat.
Currently, the demand to motor performance is higher and higher with the development of the industries such as new-energy automobile, it is embodied in motor
Power and torque request are increasing while size requires to be increasingly stringenter, that is, require the power density of motor and torque close
Degree is substantially improved.Limiting motor power density and the principal element of torque density are the heat-sinking capabilities of motor at present: working as heat radiation energy
When power deficiency, the stator winding temperature rise of motor can be higher, causes the problems such as insulating layer is damaged, and permanent magnet demagnetizes, to influence electricity
Machine continues working ability or holding time in peak value operating point.
The type of cooling of motor includes air-cooled, water cooling, oily cold and answering containing any two kinds of types of cooling in the prior art
It closes cooling etc..Wherein, the cooling performance of air cooling way is poor, can not be applied in high torque (HT) pot motor；Water-cooling pattern one
As in casing containing water channel with water flowing, but cause to radiate since the heat dissipation path between stator winding to coolant liquid is too long
Rate is not high；The cold mode of oil all immerses rotor in cooling oil, although heat-sinking capability becomes strong, because of the function of churning loss consumption
Rate increases, so that overall efficiency is not high.
Therefore, U.S. patent Nos (patent publication No.: US2005/0151429A1) propose a kind of novel cooling manner:
Stator winding is directly cooled down after rotor is isolated again.The patent is inserted into one mainly for round wires winding electric machine, in stator rabbet
Closed spacer medium forms closed axial passage so that stator and rotor are kept apart on the inside of stator, is passed through in the channel cold
But oil can directly cool down stator winding, quickly take away heat.
But above-mentioned patent is only for the logical oil in the gap between round wires winding, and the area being passed through with cooling oil by
Limit, the disadvantages of on-way resistance is big.In addition, the patent is not directed to the scheme of flat wire motor.
Using the flat wire motor of hair fastener winding, copper factor is higher than general due to it can efficiently use the space in motor tooth socket
Logical winding electric machine, thus reducing motor volume, the power density for promoting motor and having great advantage on torque density, have good
Good application prospect.But it is mostly that end is led adhesive curing and passed by heat-conducting glue that directly oil is cold in the slot of the flat wire motor of the prior art
Heat also further increases the space of heat-sinking capability.
In view of the above-mentioned problems, the invention proposes the method directly cooling by stator winding of a kind of pair of flat wire motor,
Heat can comparatively fast can be taken away by directly cooling stator winding, oil, the area that cooling oil is passed through can also be led between winding
Bigger, on-way resistance is also relatively small, and effect colder than the direct oil of round wires winding electric machine is good, and end more existing than flat wire motor is thermally conductive
The scheme of glue is good, is convenient for the further genralrlization application of flat wire motor.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention proposes that one kind is flat
Oily air-cooled structure in line motor slot, the flat wire motor includes casing 800, stationary part and rotor portion, the stator department subpackage
Stator core 801 is included, the 801 inner wall side of stator core is distributed along the circumference with several stator tooth sockets 101, in slot in insertion stator slot
Winding 806, the end of winding 806 is connected according to certain sequence using welding manner in the stator slot, forms stator terminal
Portion's winding 805, winding 806 and Stator End Winding 805 are flat wire form in the stator slot, and section is rectangle, described turn
Subdivision includes rotary shaft 802 and the rotor 807 around rotary shaft rotation, and the oil air-cooled structure includes cooling oil path in slot
811, cooling oil path 811 includes oil inlet 809 and oil outlet 803 in the slot, thus make cooling oil from the oil inlet 809 into
Enter motor, flow through cooling oil path 811 in the slot, passes through 803 outflow motor of oil outlet.
Further, the oily air-cooled structure further includes distance sleeve 808, for rotor portion and stationary part to be isolated
It opens, guarantees that cooling oil can only be along the axial direction flowing in stator core 801.
Further, in slot cooling oil path 811 by the gap in gap, flat wire and distance sleeve 808 between flat wire and
The gap of flat wire and 101 inner wall of stator tooth socket and formed.
Further, cooling oil flows through cooling oil path 811 in the slot and directly cools down 806 He of winding in the stator slot
Stator End Winding 805.
Further, it is used as outermost radial outside or stator of the gap setting in stator tooth socket 101 of cooling oil path 811 in slot
Other positions in the radially inner most or slot of tooth socket 101.
Preferably, the gap as cooling oil path 811 in slot can be multiple.
Preferably, there is bayonet arrangement 102 on the stator tooth socket 101.
Preferably, the bayonet arrangement 102 separates winding 806 in the stator slot, forms runner to ensure to cool down
Oil is along axial flowing.
Preferably, the bayonet arrangement 102 plays the role of positioning to winding 806 in the stator slot, prevent its by
To the influence of vibration.
Preferably, the bayonet arrangement 102 is arcuation section or water chestnut shape section or the section of other Reasonable Shapes.The present invention
Flat wire motor slot in oily air-cooled structure have the following advantages and beneficial effects:
1) cooling oil is directly contacted with stator and winding, and directly cooling stator and winding, wherein Stator End Winding can also
Directly to be cooled down, good heat dissipation effect, and cooling is more uniform, power density and the torque that can effectively improve motor are close
Degree；
2) by cooling oil path in setting slot, the direct cooling of the stator and winding for flat wire motor is realized, it is cold in slot
But oil circuit relies primarily on the runner between flat wire winding, regular shape, and drag losses are less；
3) between flat wire winding the realization of cooling oil duct only need change stator punching shape, to existing electric machine structure change compared with
Small, the bayonet arrangement on stator punching can also play the role of constraining winding position.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the electric machine structure schematic diagram of oily air-cooled structure in a kind of flat wire motor slot of the invention；
Fig. 2A -2F is the knot of the different embodiments of the stator slot of the motor of oily air-cooled structure in a kind of flat wire motor slot of Fig. 1
Structure schematic diagram；
Fig. 3 is the flat wire motor sectional view of oily air-cooled structure in a kind of flat wire motor slot of the invention；
Appended drawing reference in attached drawing are as follows:
101- stator tooth socket, 102- bayonet arrangement；
800- casing, 801- stator core, 802- rotary shaft, 803- oil outlet, 805- Stator End Winding, 806- stator slot
Interior winding, 807- rotor, 808- distance sleeve, 809- oil inlet, cooling oil path in 811- slot.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In a broad embodiment of the invention, propose that a kind of oil that the stator winding for flat wire motor is directly cooling is cold
Structure, the oil air-cooled structure are mainly used in the motor being mounted on automobile, and the motor includes rotor portion and stationary part,
The rotor portion includes the rotary shaft that horizontal direction extends and can include around the rotor of rotary shaft rotation, stationary part
Stator core, stator core inner wall side are distributed along the circumference with several stator tooth sockets, winding in insertion stator slot in slot, in stator slot around
The end of group is connected according to certain sequence using welding manner, and Stator End Winding, winding and stator in stator slot are formed
End winding is flat wire form, and section is rectangle.
The oil air-cooled structure includes cooling oil path in slot, the oil circuit be parallel to the rotary shaft (shape in the channel and
Next sealing mechanism can be discussed in detail), the oil air-cooled structure further includes oil outlet and oil inlet, so that cooling oil can
To enter motor from the oil inlet by external pump, cooling oil path in the slot is flowed through, and then pass through the oil outlet stream
Motor out.
In the oil air-cooled structure, cooling oil path passes through gap, flat wire and distance sleeve between flat wire in the slot gap
And flat wire and stator tooth socket inner wall gap and formed.Cooling oil flow through cooling oil path in the slot and directly cool down it is described fixed
Winding and Stator End Winding in pilot trench, so as to enhance cooling effect.
It should be recognized that the gap between the flat wire is formed by the bayonet arrangement on stator, the bayonet arrangement
Winding in stator slot can be separated, forming runner ensures that cooling oil can be along axial flowing, and the flow channel shape is regular,
It is most important cooling oil path in above-mentioned three kinds of gaps with lesser drag losses；Meanwhile bayonet arrangement in stator slot around
Group plays the role of positioning, it is prevented influence of factors such as to be vibrated；It is understood that the bayonet arrangement and flat wire
Between gap presence, slightly reduce the copper factor of motor, but due to the more common winding of the copper factor of flat wire motor itself
Motor is much higher, even if the gap between flat wire reduces the copper factor of motor slightly, can still be higher than the motor of common winding,
Cooling scheme of the invention has brought being substantially improved for cooling effect, can substantially mention to sacrifice certain copper factor as cost
The nominal torque and rated power of high motor improve holding time for the peak torque of motor, peak power and peak value output, mention
Power density, torque density and the comprehensive performance of high motor.
In addition, the present invention has more uniform cooling effect relative to the traditional scheme cooled down indirectly using water jacket, it can
With understanding, in traditional water jacket scheme, often without jacket structure for water outside Stator End Winding, end heat also will be via
Stator is transmitted to water jacket, and Stator End Winding heat dissipation is bad, be via in addition, the heat that the winding of stator radially inner side generates
Stator radially inner side, i.e. stator increment are transmitted to stator radial outside, then pass via the cooling water in water jacket, and of the invention
In scheme, Stator End Winding can directly steep in cooling oil, and can be with close to the winding heat in radially inner side and outside
It is directly taken away via cooling oil, to realize more uniform cooling.
The present invention is additionally provided with distance sleeve, and rotor portion and stationary part are kept apart, and avoids cooling oil inflow
Motor gas-gap touches rotor, brings excessive churning loss.
Below with reference to the preferred embodiment of Fig. 1-3 detailed description invention.
Hereinafter, identical appended drawing reference indicates identical or corresponding component in attached drawing, and their expression and function
It can be also identical.Therefore, will no longer take the circumstances into consideration to repeat its detailed description.
As shown in Figure 1, motor described in oily air-cooled structure mainly includes casing 800, determines in a kind of flat wire motor slot of the invention
Subdivision and rotor portion etc..
The stationary part mainly includes stator core 801, and 801 inner wall side of stator core is distributed along the circumference with several stator tooths
Slot 101, slot is interior to be inserted into winding 806 in stator slot, and the end of winding 806 is connected according to certain sequence using welding manner in stator slot
It picks up and, form Stator End Winding 805, winding 806 and Stator End Winding 805 are flat wire form, section in stator slot
For rectangle；
Close to inner cover plate and outer cover plate on the outside of the stationary part, oil inlet is collectively formed in the inner cover plate and outer cover plate
809 and oil outlet 803, wherein oil inlet 809 is located at motor lower portion, and oil outlet 803 is located at motor top；
Preferably, the setting of oil outlet 803 of the invention on top and the setting of oil inlet 809 in lower part, therefore cooling oil is first
Lower part is filled, top is subsequently filled, it is possible to prevente effectively from the introducing of bubble, and then avoids getting rusty and deteriorating for winding, i.e., effectively
Avoid preventing the reduction of cooling performance caused by the direct contact of cooling liquid and stator winding due to bubble；
It should be recognized that the set-up mode of above-mentioned oil inlet and oil inlet is only example, should not be understood as to of the invention
Any restrictions；
Winding 806 and Stator End Winding 805 are immersed in cooling oil in the stator slot, by cooling oil as Jie
Between cooling oil and winding (winding 806 and Stator End Winding 805 in stator slot) heat exchange occurs for matter；Then cooling oil
Take away the heat of winding (winding 806 and Stator End Winding 805 in stator slot) generation, thus cooling winding (in stator slot around
Group 806 and Stator End Winding 805) and stator core 801.
The rotor portion mainly includes permanent magnet, rotary shaft 802, rotor 807 etc..
In the present embodiment, motor between cooling oil and winding (winding 806 and Stator End Winding 805 in stator slot) into
Row heat exchange, to reduce the temperature of the stationary part.Temperature it is raised the reason is as follows that: winding (winding 806 and fixed in stator slot
Sub- End winding 805) in heat is generated when passing through electric current, winding temperature increases, and stator core 801 itself can also generate heat, and
Heat is transmitted by winding, so temperature increases,
As shown in Figure 1, the cooling process of cooling structure of the invention are as follows:, cooling oil from be located at motor lower portion oil inlet
809 enter, and the oil duct formed along outer cover plate and inner cover plate enters the oil depot positioned at 805 end of Stator End Winding, thus sufficiently
Stator End Winding 805 is infiltrated, cooling oil path 811 in slot are then entered by pressure difference, winding in directly cooling stator slot
806, heat is taken away quickly, then enters back into the oil depot of 805 end of Stator End Winding of the other end, finally from positioned at motor
The oil outlet 803 on top leaves motor.
Further, cooling oil leaks out in tooth socket opening and is flowing radially toward rotor portion in order to prevent, utilizes
Distance sleeve 808 is isolated by stationary part with rotor portion, to guarantee that cooling oil can only be along axial flowing.
It should be recognized that the outer oil circuit of motor and filter, oil pump, radiator are formed into a loop, oil pump provides the pressure of recycle oil
Power, filter play a part of to filter cooling oil, and radiator exchanges heat with outside for cooling oil, reduces the temperature of cooling oil in time
Degree.
As shown in Fig. 2A to 2F, a variety of models of the slot 101 of motor are described.As shown, being provided in stationary part
A large amount of slot 101；
It include winding 806 in stator slot in slot 101, in addition each slot 101 can be isolated sleeve 808 such as Fig. 2A -2F
Sealing, to prevent cooling oil from being leaked to rotor portion；
Preferably, as shown in Figure 2 A, cooling oil path 811 in slot is formed between the 3rd flat wire and the 4th flat wire；,
It should be recognized that being used as any position that the gap of cooling oil path 811 in slot can be provided in slot 101, for example, excellent
The outermost of slot 101 is arranged in selection of land, Fig. 2 B, as the most inner side of slot 101 is arranged in Fig. 2 C.
In addition, bayonet arrangement 102 need to only be had by being used as the gap of cooling oil path 811 in slot, thus keep flat wire fixed without
It can be shaken with the immersion of cooling oil.
Vehicle-mounted motor has biggish vibration problem, and bayonet arrangement 102 can also prevent flat wire vibration excessive broken
Bad surface insulation, therefore required (to consider that the Distribution of Magnetic Field in stator, the vibration of stator tooth or technique are wanted according to design of electrical motor
Ask) shape in gap can be designed as any form, for example, it is preferred to which such as Fig. 2 D is arcuation section, such as Fig. 2 E is that water chestnut shape is cut
Face；
It is had the advantage that using arc section or diamond-shaped cross-section: in the identical situation of logical oil sectional area, slot channel
Area is bigger, so that the area contacted with cooling oil is bigger, to be conducive to more fully cool down.
Gap as cooling oil path 811 in slot can have multiple, such as have 1, and 2,3 are even more, such as
Fig. 2 F, gap are 2.
It will be understood by those skilled in the art that: it without departing from the principle and spirit of the present invention can be right
These embodiments carry out a variety of change, modification, replacement and modification, and the scope of the present invention is defined by the claims and their equivalents.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means specific features described in conjunction with this embodiment or example, knot
Structure, material or feature are included at least one embodiment or example of the invention.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can be combined in any suitable manner in any one or more of the embodiments or examples.
Claims (10)
1. oily air-cooled structure in a kind of flat wire motor slot, the flat wire motor includes stationary part and rotor portion, which is characterized in that
The stationary part includes stator core (801), and stator core (801) the inner wall side is distributed along the circumference with several stator tooths
Slot (101), slot is interior to be inserted into winding (806) in stator slot, and the end of winding (806) is used according to certain sequence in the stator slot
Welding manner connects, and is formed Stator End Winding (805), winding (806) and Stator End Winding in the stator slot
It (805) is flat wire form, section is rectangle,
The rotor portion includes rotary shaft (802) and the rotor (807) around rotary shaft rotation；
It is described oil air-cooled structure include cooling oil path in slot (811), in the slot cooling oil path (811) include oil inlet (809) and
Oil outlet (803) flows through cooling oil path (811) in the slot so that cooling oil be made to enter motor from the oil inlet (809),
Pass through the oil outlet (803) outflow motor.
2. oil air-cooled structure according to claim 1, which is characterized in that the oil air-cooled structure further includes distance sleeve (808),
For keeping apart rotor portion and stationary part, guarantee that the cooling oil in stator core (801) can only be along axial flowing.
3. oil air-cooled structure according to claim 2, which is characterized in that cooling oil path (811) passes through between flat wire in the slot
Gap, the gap of flat wire and distance sleeve (808) and the gap of flat wire and stator tooth socket (101) inner wall and formed.
4. oil air-cooled structure according to claim 1, which is characterized in that cooling oil flows through cooling oil path (811) in the slot
And directly cool down winding (806) and Stator End Winding (805) in the stator slot.
5. oil air-cooled structure according to claim 3, which is characterized in that the gap for being used as cooling oil path in slot (811)
Any other positions in the outermost radial outside of stator tooth socket (101) or the radially inner most or slot of stator tooth socket (101) are set.
6. oil air-cooled structure according to claim 5, which is characterized in that the gap for being used as cooling oil path (811) in slot can be with
It is multiple.
7. oil air-cooled structure according to claim 5, which is characterized in that have bayonet arrangement on the stator tooth socket (101)
(102)。
8. oil air-cooled structure according to claim 7, which is characterized in that the bayonet arrangement (102) will be in the stator slot
Winding (806) separates, and forms runner to ensure cooling oil along axial flowing.
9. oil air-cooled structure according to claim 8, which is characterized in that the bayonet arrangement (102) is in the stator slot
Winding (806) plays the role of positioning, it is prevented to be affected by vibrations.
10. according to the described in any item oily air-cooled structures of claim 7-9, which is characterized in that the bayonet arrangement (102) is arcuation
Section or water chestnut shape section or the section of other Reasonable Shapes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910104947.XA CN109617319B (en) | 2019-02-01 | 2019-02-01 | Flat wire motor inslot oil cooling structure |
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| CN201910104947.XA CN109617319B (en) | 2019-02-01 | 2019-02-01 | Flat wire motor inslot oil cooling structure |
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| CN109617319B CN109617319B (en) | 2024-09-24 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109980833A (en) * | 2019-04-16 | 2019-07-05 | 哈尔滨理工大学 | A kind of oil-filled submersible motor |
| CN110601394A (en) * | 2019-09-27 | 2019-12-20 | 珠海格力电器股份有限公司 | Stator cooling structure, stator assembly and motor with same |
| 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 |
| CN112966388A (en) * | 2021-03-15 | 2021-06-15 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Stator winding equivalent method in flat wire motor temperature field analysis |
| WO2021197505A1 (en) * | 2020-03-30 | 2021-10-07 | 苏州阿福机器人有限公司 | Cooling flow channel structure in motor slot |
| WO2022110748A1 (en) * | 2020-11-25 | 2022-06-02 | 华为数字能源技术有限公司 | Motor, power assembly and apparatus |
| CN114915057A (en) * | 2022-05-27 | 2022-08-16 | 北京交通大学 | Mixed phase multi-phase fault-tolerant motor cooling structure |
| CN116599294A (en) * | 2023-05-29 | 2023-08-15 | 江苏金丰机电有限公司 | Disc type hub motor for automobile |
| EP4239855A4 (en) * | 2020-11-25 | 2024-04-24 | Huawei Digital Power Technologies Co., Ltd. | Stator, motor, power assembly, and electric vehicle |
| EP4115497A4 (en) * | 2020-03-02 | 2024-05-01 | Falcon Power LLC | Cooling system for variable torque generation electric machine |
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