CN220586052U - Companion type direct liquid cooling structure for permanent magnet motor - Google Patents
Companion type direct liquid cooling structure for permanent magnet motor Download PDFInfo
- Publication number
- CN220586052U CN220586052U CN202221317990.8U CN202221317990U CN220586052U CN 220586052 U CN220586052 U CN 220586052U CN 202221317990 U CN202221317990 U CN 202221317990U CN 220586052 U CN220586052 U CN 220586052U
- Authority
- CN
- China
- Prior art keywords
- winding
- companion
- permanent magnet
- type mixed
- stator
- 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.)
- Active
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 61
- 239000007788 liquid Substances 0.000 title claims abstract description 16
- 238000004804 winding Methods 0.000 claims abstract description 103
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052802 copper Inorganic materials 0.000 claims abstract description 34
- 239000010949 copper Substances 0.000 claims abstract description 34
- 239000010963 304 stainless steel Substances 0.000 claims description 4
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- 239000003973 paint Substances 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 description 10
- 239000002826 coolant Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Motor Or Generator Cooling System (AREA)
Abstract
The utility model belongs to the technical field of motor cooling, and relates to a partner type direct liquid cooling structure for a permanent magnet motor. The utility model arranges cooling guide pipes and copper windings in the stator slot of the motor, and each turn of centralized mixed winding consists of two copper windings and two cooling guide pipes, and the two cooling guide pipes are distributed in a diagonal line in the stator slot and are wound on the tooth parts of the stator in parallel like a partner. The motor improves the thermal management capability of the motor, and increases the thermal safety coefficient for improving the torque output capability of the motor.
Description
Technical Field
The utility model belongs to the technical field of motor cooling, and relates to a partner type direct liquid cooling structure for a permanent magnet motor.
Background
For a given insulation limit in the stator slot, the thermal limit may restrict the torque output capability of the motor from further improving. The traditional heat dissipation system adopts a forced air cooling mode of installing a fan to cool the motor, a special cooling system is not required to be designed, the design cost is lower, but the lower heat dissipation efficiency is insufficient to meet the pursuit of the current motor on high torque output capacity. Therefore, most of the existing motors with high torque output capacity adopt a liquid cooling heat management scheme, a cooling pipe is integrated in a machine shell or a stator core yoke part, and high heat conduction fluid is introduced into the cooling pipe to take away heat generated by motor loss, but the cooling medium is far away from the largest heat source stator winding, so that the heat resistance of a heat dissipation path is increased, meanwhile, an effective heat path is not arranged at the winding end part to transfer the heat, and the hottest point of the motor is located at the winding end part.
In order to reduce the thermal resistance of a heat conduction path of the motor and solve the problem that heat dissipation of an end winding is difficult, an oil cooling heat dissipation mode in which cooling oil is in direct contact with a heat source is applied to the motor with high torque output capacity, but the viscosity of the oil is high, energy loss during rotor rotation is increased, meanwhile, an oil medium is required to be strictly filtered, so that damage of impurities in the oil to an insulating layer of the motor is avoided, the sealing requirement on the motor is high, and the design cost of a cooling system is increased.
Disclosure of Invention
The utility model aims at solving the defects existing in the prior art, and aims at solving the problems of lower efficiency, difficult heat dissipation of end windings, larger extra energy loss, higher design cost and the like of the existing motor heat management scheme, and the utility model aims at solving the problems that the heat dissipation of the end windings is difficult, the extra energy loss is large, the design cost is high and the like
The partner type direct liquid cooling structure for the permanent magnet motor is provided, the heat resistance between a cooling medium and a heat source is reduced to a greater extent on the basis of reducing the design cost of a cooling system and reducing the additional power loss, and the problem that the heat dissipation of an end winding is difficult is solved.
In order to achieve the purpose, the utility model adopts the following technical scheme that the stator core, the copper winding, the cooling conduit, the companion type mixed winding, the rotor core, the permanent magnet and the rotating shaft are formed; the device is characterized in that each turn of the companion-type mixed winding consists of two copper windings and two cooling pipes, and the copper windings and the two cooling pipes are distributed in a diagonal line in a stator slot, and the companion-type mixed winding is wound on the tooth part of the stator.
The mate type mixed winding is wound from the right side bottom groove to the left side groove of the tooth part of the stator in parallel, and after the first ring of mate type mixed winding is wound, the mate type mixed winding is wound downwards after the end part of the stator core is staggered by a certain height (the height of the copper conductor), and the second ring of mate type mixed winding is wound. After the winding of the first layer of the mate type mixed winding is finished, the second layer of the mate type mixed winding is started to be wound at the inclined shoulder of the stator slot in parallel, and after the first ring of the mate type mixed winding is wound, the second ring of the mate type mixed winding is wound at the end part of the stator iron core in a staggered mode at the same height and upwards until the winding of the second layer of the mate type mixed winding is finished.
Furthermore, the copper conductors and the cooling guide pipes in the companion-type mixed winding are in flat shapes, so that a plurality of outer surfaces of each copper winding in the stator slot and at the end part can be in seamless contact with the cooling guide pipes, and heat generated by copper loss of the winding can be taken away to a greater extent.
Further, the cooling conduit in the companion-type mixed winding adopts a 304 stainless steel hose, is easy to bend and deform into a winding shape identical to that of the copper winding, and is convenient for the cooling conduit and the copper winding to be in companion-type close winding.
Furthermore, the 304 stainless steel adopted by the cooling duct has the special better heat transfer performance of the metal material, which is beneficial to improving the heat management efficiency of the partner direct liquid cooling system; at the same time, the smaller electrochemical activity compared with copper and aluminum can reduce the influence of alternating magnetic fields on the copper and aluminum, thereby reducing the extra power loss of the motor.
Further, the companion-type mixed winding at the outermost layer of each stator slot has a plurality of surfaces in contact with the inner wall of the slot, so that heat generated by stator iron loss can be taken away.
Further, the actual number of windings and layers of the companion hybrid winding 2 is determined by the size and number of windings of the copper winding and cooling conduit.
Still further, the copper conductors and cooling conduits in each turn of the companion hybrid winding are the same size and are sized according to the needs of the electromagnetic design and the slot fill rate.
Furthermore, the coil-down mode of the mate-mixed winding in the stator slot is the same as that of a pure copper winding, and an additional water channel is not required to be cut on a shell or a stator core yoke part, so that the process processing cost of the cooling system is reduced.
Compared with the prior art, the utility model has the beneficial effects.
According to the utility model, the copper winding is directly contacted with the cooling conduit, so that the thermal resistance between the cooling medium and the maximum heat source stator winding is reduced to a greater extent, the heat conduction rate to the outside due to loss is enhanced under the same condition, the problem of difficult heat dissipation of the end winding is solved, the heat management capability of the motor is improved, and the thermal safety coefficient is increased for improving the torque output capability of the motor.
Drawings
The utility model is further described below with reference to the drawings and the detailed description. The scope of the present utility model is not limited to the following description.
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is a schematic diagram of the distribution of copper windings and cooling ducts in a companion hybrid winding.
Fig. 3 is a schematic of parallel winding of a companion hybrid winding.
In the figure, 1 a stator core; 2 mate mixed winding; 3 permanent magnets; 4, rotor core; a rotating shaft; 6 cooling the conduit; 7 copper windings; 8, a stator groove inclined shoulder; 9 stator teeth; 10 a first turn of a companion hybrid winding; 11 a second turn of companion hybrid winding; 12 a third turn of companion type mixed winding; 13 a first layer of companion hybrid winding; 14 a second layer of companion hybrid winding.
Detailed Description
As shown in fig. 1-3, the utility model is composed of a stator core 1, a partner mixed winding 2, a copper winding 7, a cooling conduit 6, a rotor core 4, a permanent magnet 3 and a rotating shaft 5; each turn of the companion hybrid winding 2 is composed of two copper windings 7 and two cooling ducts 6.
After the copper winding 7 is subjected to paint dipping insulation treatment, the copper winding and the cooling conduit 6 are wound in parallel to form the companion type mixed winding 2, and then the companion type mixed winding 2 is embedded into a slot punched by the stator core 1.
Specifically, the dovetail grooves are cut on the stator teeth 1, and single-tooth splicing is adopted among the stator teeth 1, so that the manufacturing and winding of the companion type hybrid winding 2 are facilitated.
Specifically, the companion type mixed winding 2 is fixed by self-locking nylon binding tapes at intervals in the winding process of the stator slot, so that the copper winding 7 and the cooling conduit 6 are prevented from being separated from each other during the dislocation winding of the stator end.
The utility model reduces the thermal resistance between the cooling medium and the largest heat source stator winding to a greater extent through the direct contact between the stator winding and the cooling conduit, enhances the heat conduction rate to the outside due to the loss under the same condition, solves the problem of difficult heat dissipation of the end winding, improves the heat management capability of the motor, and increases the heat safety coefficient for improving the torque capability of the motor.
In addition, the 304 stainless steel adopted by the cooling conduit not only has better heat transfer performance, but also has smaller electrochemical activity compared with copper and aluminum, so that the influence of an alternating magnetic field on the cooling conduit can be reduced, and the extra power loss of the motor is reduced.
In addition, the utility model does not need to cut the water channel on the shell or the yoke part of the stator core additionally, and reduces the processing cost of the cooling system. The utility model is promoted and applied, greatly improves the heat radiation capability of the motor, thoroughly solves the problem of difficult heat radiation of the motor end winding, reduces the design cost of the cooling system on the basis of improving the thermal safety coefficient of the motor, and is beneficial to application in practical engineering.
It should be understood that the foregoing detailed description of the present utility model is provided for illustration only and is not limited to the technical solutions described in the embodiments of the present utility model, and those skilled in the art should understand that the present utility model may be modified or substituted for the same technical effects; as long as the use requirement is met, the utility model is within the protection scope of the utility model.
Claims (9)
1. The companion-type direct liquid cooling structure for the permanent magnet motor consists of a copper winding, a cooling conduit, a companion-type mixed winding, a stator core, a rotor core, a permanent magnet and a rotating shaft; the device is characterized in that each turn of the companion-type mixed winding consists of two copper windings and two cooling pipes, and the copper windings and the two cooling pipes are distributed in a diagonal line in a stator slot, and the companion-type mixed winding is wound on the tooth part of the stator.
2. The companion direct liquid cooling structure for a permanent magnet motor of claim 1, wherein: the mate type mixed winding is wound from a right side bottom groove to a left side groove of the tooth part of the stator in parallel, and after one circle of winding, the mate type mixed winding winds downwards for a second circle after the end part of the stator core is staggered by a certain height; winding of the first layer of mate type mixed winding is finished; and a second layer of partner-type mixed winding is wound at the inclined shoulder of the stator slot in parallel, and after one circle of the second layer of partner-type mixed winding is wound, the end part of the stator core is staggered by the same height and is wound upwards for a second circle.
3. The companion direct liquid cooling structure for a permanent magnet motor of claim 2, wherein: the actual number of windings and layers of the companion hybrid winding are determined by the size and number of windings of the copper winding and the cooling conduit.
4. A partner-type direct liquid cooling structure for a permanent magnet machine according to claim 3, characterized in that: the copper windings and cooling ducts in the companion hybrid winding are the same size.
5. The companion direct liquid cooling structure for a permanent magnet motor of claim 1, wherein: the copper windings and the cooling conduit in the companion type mixed winding are both in flat shapes.
6. The companion direct liquid cooling structure for a permanent magnet motor of claim 1, wherein: the partner-type mixed winding of the outermost layer of the stator slot has one surface in contact with the inner wall of the stator slot.
7. The companion direct liquid cooling structure for a permanent magnet motor of claim 1, wherein: the cooling conduit is a 304 stainless steel hose.
8. The companion direct liquid cooling structure for a permanent magnet motor of claim 1, wherein: and after the copper winding is subjected to paint dipping insulation treatment, the copper winding and the cooling guide pipe are wound in parallel to form a companion type mixed winding, and the companion type mixed winding is embedded into a slot punched by the stator core.
9. The companion direct liquid cooling structure for a permanent magnet machine of claim 8, wherein: the partner type mixed winding is fixed at intervals by a self-locking nylon binding belt, so that the copper winding and the cooling conduit are prevented from being separated from each other when the stator end is wound in a dislocation manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221317990.8U CN220586052U (en) | 2022-05-30 | 2022-05-30 | Companion type direct liquid cooling structure for permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221317990.8U CN220586052U (en) | 2022-05-30 | 2022-05-30 | Companion type direct liquid cooling structure for permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220586052U true CN220586052U (en) | 2024-03-12 |
Family
ID=90108971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221317990.8U Active CN220586052U (en) | 2022-05-30 | 2022-05-30 | Companion type direct liquid cooling structure for permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220586052U (en) |
-
2022
- 2022-05-30 CN CN202221317990.8U patent/CN220586052U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107196480A (en) | A kind of axial magnetic flux disc-type electric motor of stator immersion oil circulating cooling and segmented armature | |
| CN103580383A (en) | Air-water-hybrid cooled high-speed permanent magnet motor with rotor under hybrid protection | |
| CN101645632B (en) | Stator water cooling device of external rotor permanent magnet synchronous machine | |
| CN1649236A (en) | AC winding with integrated cooling system and method for making the same | |
| CN107134903A (en) | A kind of axial magnetic flux disc-type electric motor of stator wheel hub water cooling and bimorph transducer triple-spool framework | |
| CN114024379B (en) | Cooling system of stator permanent magnet type axial magnetic field permanent magnet motor | |
| EP4131727B1 (en) | Stator structure and flat wire motor | |
| CN203562887U (en) | High-speed permanent magnet motor with adoption of rotor mixed protection measure | |
| CN114785016A (en) | Mate type direct liquid cooling structure for permanent magnet motor | |
| CN220586052U (en) | Companion type direct liquid cooling structure for permanent magnet motor | |
| CN111245147B (en) | Mixed cooling system of birotor stator yoke-free modular axial motor | |
| CN107681811A (en) | A kind of cage type asynchronous induction machine of new-energy automobile | |
| CN207010374U (en) | A kind of oil-cooled stator of axial magnetic flux disc type electric machine | |
| CN105576863A (en) | Direct-cooling direct-drive type motor with copper tube structured stator | |
| CN112350468B (en) | Motor end plate and motor comprising same | |
| CN102594004A (en) | High-power three-phase asynchronous motor with cooling water channels at end covers | |
| CN209545273U (en) | A kind of motor cooling in stator shaft orientation channel | |
| CN114337005A (en) | Novel single-Dewar efficient motor structure | |
| CN113300506A (en) | Slot wedge type in-slot liquid cooling motor | |
| CN207117381U (en) | A kind of cage type asynchronous induction machine of new-energy automobile | |
| CN1474496A (en) | Inductive motor and method for producing induction motor rotor and stator | |
| CN206077159U (en) | Outer rotor Circular Winding induction machine with water-cooling | |
| CN216819653U (en) | Compound cooling type flywheel energy storage system motor | |
| CN213879396U (en) | High-power-density permanent magnet motor stator | |
| CN2645331Y (en) | Stator cooling inner water-repellent arrangement for electric motor shaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |