CN117767602A - Parallel cooling waterway permanent magnet motor stator - Google Patents
Parallel cooling waterway permanent magnet motor stator Download PDFInfo
- Publication number
- CN117767602A CN117767602A CN202410004553.8A CN202410004553A CN117767602A CN 117767602 A CN117767602 A CN 117767602A CN 202410004553 A CN202410004553 A CN 202410004553A CN 117767602 A CN117767602 A CN 117767602A
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- Prior art keywords
- stator
- water
- water pipe
- yoke
- pipes
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- Pending
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 130
- 239000000498 cooling water Substances 0.000 claims abstract description 33
- 230000007704 transition Effects 0.000 claims abstract description 17
- 238000004804 winding Methods 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 claims abstract description 12
- 230000000712 assembly Effects 0.000 claims description 11
- 238000000429 assembly Methods 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Motor Or Generator Cooling System (AREA)
Abstract
The invention discloses a parallel cooling waterway permanent magnet motor stator, which comprises a stator base, a stator core, windings and a parallel cooling waterway system, wherein the stator base is a cage-shaped base, the parallel cooling waterway system comprises a notch water pipe assembly embedded in a stator tooth part, a yoke water pipe embedded in a stator yoke part, a transition water pipe connected with the notch water pipe assembly and an inlet/outlet water header pipe, the notch water pipe assembly and the yoke water pipe are connected in parallel in the parallel cooling waterway system, the yoke water pipe is directly connected with the inlet/outlet water header pipe, and an inlet/outlet of the notch water pipe assembly is connected with the inlet/outlet water header pipe through the transition water pipe in a welding mode. The invention has reasonable design, even arrangement of the cooling waterway near the heat source, even heat dissipation, high efficiency, no welding spots in the motor, few welding spots among the cooling water pipes, high reliability, simple structure and low engineering difficulty, and can be widely applied to the field of high-power density permanent magnet motors.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a parallel cooling waterway permanent magnet motor stator.
Background
In order to improve performance indexes such as power density, the high-performance permanent magnet motor inevitably adopts higher electric load and magnetic load, and the heat load and copper loss of the motor are increased. If the heat generated by the motor stator cannot be rapidly led out, the temperature rise of key parts such as a motor winding, a rotor permanent magnet and the like is too high, so that the stable operation of the motor is influenced, and the service life of the motor is greatly reduced.
The traditional high-performance permanent magnet motor usually adopts a composite cooling technology of base water cooling or iron core yoke part penetrating pipe water cooling or in-groove penetrating pipe water cooling and in-groove water cooling plus base water cooling to cool the motor, and heat generated by a motor stator is taken away through cooling water circulation.
The traditional machine base water cooling technology has the defects of easy water channel corrosion, long distance from a heat source and the like, the traditional iron core yoke portion penetrating pipe and in-groove penetrating pipe cooling technology has the defects of complex process, occupation of the internal space of a motor, multiple welding spots and the like, and the traditional in-groove water cooling and machine base water cooling composite cooling technology also has the defects of complex structure, multiple external interfaces, high engineering implementation difficulty and the like.
Disclosure of Invention
In order to solve the technical problems, the invention provides the parallel cooling waterway permanent magnet motor stator which is simple in structure, reasonable in design, uniform in cooling and good in heat dissipation effect.
The technical scheme adopted for solving the technical problems is as follows: the stator of the parallel cooling waterway permanent magnet motor comprises a stator base, a stator core and windings, wherein the stator base is a cage-shaped base with a water inlet/outlet main pipe, the stator core is formed by laminating stator punching sheets, the inner circle of the stator core is provided with a stator tooth part, the outer circle of the stator core is provided with a stator yoke part, and the yoke part is provided with an open slot, the windings are positioned on the stator tooth part, and the outer circle of the stator core is welded with the inner circle of the stator base into a whole; the parallel cooling water path system comprises a notch water pipe assembly, a yoke water pipe, a transition water pipe and an inlet/outlet water header pipe, wherein the notch water pipe assembly is arranged at the tooth part of a stator in an m (m is an even number) group, the yoke water pipe is embedded in the yoke part of the stator in an n (n is an even number) group, the transition water pipe is arranged at the end part of the stator and connected with the notch water pipe assembly, the inlet/outlet water header pipe is embedded in the middle part of a stator base, the notch water pipe assembly and the yoke water pipe are connected in parallel in the parallel cooling water path system, an inlet/outlet of the notch water pipe assembly is connected with the inlet/outlet water header pipe through the transition water pipe in a welding mode, and an inlet/outlet of the yoke water pipe is directly connected with the inlet/outlet water header pipe in a welding mode, and cooling mediums in the pipes are oil or water.
According to the parallel cooling waterway permanent magnet motor stator, notch water pipe assemblies in a parallel cooling waterway system are uniformly and reversely embedded in a stator tooth part along the circumference, yoke water pipes are uniformly embedded in an opening groove of a stator yoke part when iron cores are stacked and fixedly welded with the stator iron cores, transition water pipes are positioned at the end parts of the stator and used for connecting the notch water pipe assemblies and water inlet/outlet manifolds, and the water inlet/outlet manifolds are annular embedded in the middle of a stator base.
A parallel cooling waterway permanent magnet motor stator is characterized in that a notch water pipe assembly of the parallel cooling waterway permanent magnet motor stator consists of k (k is more than or equal to 1) cooling water pipes, each cooling water pipe is formed by winding a seamless steel pipe and comprises a straight line part and an arc line part, the straight line part is embedded in a tooth part of the stator, the arc line part is positioned at the end part of the stator, the water pipes are not crossed, and an inlet and an outlet of each cooling water pipe are welded with a transition water pipe at the same end.
The yoke water pipe of the parallel cooling waterway permanent magnet motor stator is a continuous bending water pipe which is formed by winding a seamless steel pipe and comprises n (n is more than 2 and is an odd number) groups of straight line sections, the inlet and outlet of the yoke water pipe extend outwards in the radial direction at the middle part of the stator base and are respectively welded on the water inlet/outlet header pipe, the flow resistance between the notch water pipe and the yoke water pipe can be balanced by adjusting the diameter of the yoke water pipe, and the cooling waterway is ensured to uniformly take away the heat of the stator.
The notch water pipe assembly, the yoke water pipe, the transition water pipe and the water inlet/outlet header pipe of the parallel cooling waterway permanent magnet motor stator are square pipes or round pipes of stainless steel, copper alloy or titanium alloy.
The invention has the following beneficial effects:
the notch water pipe assembly in the parallel cooling water path system is uniformly embedded in the stator tooth part, the yoke water pipe is uniformly arranged on the stator yoke part and is close to a heat source, and cooling water can rapidly take away heat generated by the winding, so that the heat dissipation efficiency is high;
2, the notch water pipe assembly and the yoke water pipe in the parallel cooling water path system are arranged in parallel, so that the flow resistance between the notch water pipe and the yoke water pipe can be balanced by adjusting the diameter of the yoke water pipe, and the cooling water path is ensured to uniformly take away the heat of the stator;
and 3, only one group of external cooling water interfaces of the parallel cooling water path system is arranged in the middle of the stator base, so that the internal holes of the motor are saved, the process is simple, the engineering difficulty is low, the welding points of the cooling water pipes are few, the interior of the motor is free of welding points, the reliability is high, and the parallel cooling water path system can be widely applied to high-power density permanent magnet motors.
Drawings
FIG. 1 is a schematic diagram of the main structure of the present invention;
FIG. 2 is a cross-sectional view of a two-dimensional layout of the present invention;
FIG. 3 is a schematic diagram of a cooling water circuit according to the present invention;
FIG. 4 is a schematic diagram of a water tube assembly layout with notches according to the present invention;
FIG. 5 is a schematic view of a yoke water tube according to the present invention;
FIG. 6 is a schematic view of the notch water tube assembly and yoke water tube position of the present invention.
The reference numerals are as follows: the cooling water supply device comprises a 1-stator base, a 2-stator core, a 2 a-stator yoke, a 2 b-stator tooth, a 3-winding, a 4-parallel cooling water path system, a 4 a-notch water pipe assembly, a 4 b-yoke water pipe, a 4 c-transition water pipe and a 4 d-water inlet/outlet main pipe.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
Referring to fig. 1, 2 and 3, the disclosed parallel cooling water path permanent magnet motor stator comprises a stator base 1, a stator core 2, a winding 3 and a parallel cooling water path system 4, wherein the stator base 1 is a cage-shaped base with a water inlet/outlet main pipe 4d, the stator core 2 is formed by laminating stator punching sheets with inner circle set stator tooth parts 2b and outer circle set stator yoke parts 2a, and the yoke parts are provided with open slots, the winding 3 is embedded into the stator tooth parts 2b, and the outer circle of the stator core 2 is welded with the inner circle of the stator base 1 integrally; the parallel cooling water path system 4 comprises a m (m is even number) group of notch water pipe assemblies 4a positioned at the stator tooth part 2b, an n (n is even number) group of yoke water pipes 4b embedded in the stator yoke part 2a, a transition water pipe 4c positioned at the end part of the stator and connected with the notch water pipe assembly 4a, and an inlet/outlet water header pipe 4d embedded in the middle part of the stator base 1, the notch water pipe assemblies 4a and the yoke water pipe 4b in the parallel cooling water path system 4 are connected in parallel (refer to figure 3), the inlet and outlet of the notch water pipe assemblies 4a are connected with the inlet/outlet water header pipe 4d through the transition water pipe 4c in a welding way, and the inlet and outlet of the yoke water pipe 4b is directly connected with the inlet/outlet water header pipe 4d in a welding way, and cooling medium in the pipe is oil or water.
Referring to fig. 4, 5 and 6, the notch water pipe assemblies 4a in the parallel cooling water path system 4 are uniformly and reversely embedded in the stator tooth parts 2b along the circumference, the yoke water pipes 4b are uniformly embedded in the open slots of the stator yoke 2a to be welded and fixed with the stator core 2 when the core is laminated, the transition water pipe 4c is positioned at the end part of the stator and used for connecting the notch water pipe assemblies 4a and the water inlet/outlet header pipes 4d, and the water inlet/outlet header pipes 4d are annular embedded and welded in the middle part of the stator base 1. The notch water pipe assembly 4a consists of k (k is more than or equal to 1) cooling water pipes, the cooling water pipes are formed by winding a seamless steel pipe and comprise a straight line part and an arc line part, the straight line part is embedded in the tooth part 2b of the stator, the arc line part is positioned at the end part of the stator, the water pipes are not crossed, and an inlet and an outlet of a single cooling water pipe are welded and connected with the transition water pipe 4c at the same end. The yoke water pipe 4b is a continuous bending water pipe which is formed by winding a seamless steel pipe, comprises n (n is more than 2) and is an odd-numbered group of straight line sections, the inlet and the outlet of the yoke water pipe 4b extend outwards in the radial direction at the middle part of the stator base 1 and are respectively welded on the water inlet/outlet header pipe 4d, the flow resistance between the notch water pipe 4a and the yoke water pipe 4b can be balanced by adjusting the path of the yoke water pipe 4b, and the cooling waterway is ensured to uniformly take away the heat of the stator.
Further, the notch water pipe assembly 4a, the yoke water pipe 4b, the transition water pipe 4c and the water inlet/outlet header pipe 4d are square pipes or round pipes of stainless steel, copper alloy or titanium alloy.
The foregoing description is only for illustrating the specific technical solution of the present invention, but not for limiting the scope of the present invention, and any changes or substitutions that may be easily contemplated by those skilled in the art within the scope of the present invention should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. The utility model provides a parallelly connected cooling water route permanent magnet motor stator, includes stator frame (1), stator core (2) and winding (3), stator frame (1) be cage frame, its characterized in that: the stator core (2) is formed by laminating stator punching sheets with inner circle set stator tooth parts (2 b), outer circle set stator yoke parts (2 a) and open slots, the winding (3) is positioned on the stator tooth parts (2 b), and the outer circle of the stator core (2) is welded with the inner circle of the stator base (1) into a whole; the cooling water path system (4) is characterized by further comprising a parallel cooling water path system (4), wherein the parallel cooling water path system (4) comprises m groups of notch water pipe assemblies (4 a) positioned at stator tooth parts (2 b), n groups of yoke water pipes (4 b) embedded in stator yoke parts (2 a), transition water pipes (4 c) positioned at the ends of the stators and connected with the notch water pipe assemblies (4 a) and water inlet/outlet header pipes (4 d) embedded in the middle of the stator base (1), m and n are even numbers, the notch water pipe assemblies (4 a) and the yoke water pipes (4 b) are connected in parallel, an inlet and an outlet of each notch water pipe assembly (4 a) are connected with the water inlet/outlet header pipes (4 d) in a welding mode through the transition water pipes (4 c), and cooling mediums in the yokes water pipes (4 b) are directly connected with the water inlet/outlet header pipes (4 d) in a welding mode.
2. The parallel cooling waterway permanent magnet motor stator according to claim 1, wherein the notch water pipe assemblies (4 a) are uniformly and alternately arranged on the stator tooth parts (2 b) along the circumference, the yoke water pipes (4 b) are uniformly arranged in the open grooves of the stator yoke parts (2 a) in a sleeved mode and fixedly welded with the stator core (2), and the water inlet/outlet header pipe (4 d) is annular.
3. The parallel cooling waterway permanent magnet motor stator according to claim 2, wherein the notch water pipe assembly (4 a) is composed of k cooling water pipes, k is larger than or equal to 1, the cooling water pipes are seamless steel comprising a straight line part and an arc line part, the straight line part is embedded in the stator tooth part (2 b), the arc line part is positioned at the end part of the stator, and the inlet and the outlet of the cooling water pipes are welded with the transition water pipe (4 c) at the same end.
4. The parallel cooling waterway permanent magnet motor stator according to claim 2, wherein the yoke water pipe (4 b) is a continuously bent seamless steel pipe comprising n groups of straight line segments, n is more than 2 and is odd, and an inlet and an outlet of the yoke water pipe (4 b) extend outwards in the radial direction in the middle of the stator base (1).
5. A parallel cooling waterway permanent magnet motor stator according to any one of claims 1 to 4, characterized in that the notch water pipe assembly (4 a), yoke water pipe (4 b), transition water pipe (4 c) and water inlet/outlet header pipe (4 d) are square pipes or round pipes of stainless steel, copper alloy or titanium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410004553.8A CN117767602A (en) | 2024-01-03 | 2024-01-03 | Parallel cooling waterway permanent magnet motor stator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410004553.8A CN117767602A (en) | 2024-01-03 | 2024-01-03 | Parallel cooling waterway permanent magnet motor stator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117767602A true CN117767602A (en) | 2024-03-26 |
Family
ID=90322159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410004553.8A Pending CN117767602A (en) | 2024-01-03 | 2024-01-03 | Parallel cooling waterway permanent magnet motor stator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117767602A (en) |
-
2024
- 2024-01-03 CN CN202410004553.8A patent/CN117767602A/en active Pending
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