CN110752694A - Motor winding direct cooling motor and cooling method - Google Patents
Motor winding direct cooling motor and cooling method Download PDFInfo
- Publication number
- CN110752694A CN110752694A CN201911000999.9A CN201911000999A CN110752694A CN 110752694 A CN110752694 A CN 110752694A CN 201911000999 A CN201911000999 A CN 201911000999A CN 110752694 A CN110752694 A CN 110752694A
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- winding
- motor
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- stator
- radiator
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- 238000004804 winding Methods 0.000 title claims abstract description 113
- 238000001816 cooling Methods 0.000 title claims abstract description 43
- 239000007788 liquid Substances 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 abstract 1
- 239000000945 filler Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
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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 a motor with a direct cooling motor winding, which comprises a shell, a stator assembly, a heat conducting component, a rotor assembly and a radiator, wherein the stator assembly comprises a stator core and a winding, the stator core is fixed inside the shell in an interference fit mode, the winding is fixed inside a stator groove of the stator core and is fixed through an insulating substance, the rotor assembly is fixed inside the stator through an end cover and a motor rotating shaft, one part of the heat conducting component is arranged in the winding, the other part of the heat conducting component is led out from the winding and is connected with the radiator, and the radiator is arranged on the outer side of the shell. The invention can directly transfer the heat of the winding to the radiator, saves the thermal resistance of each part in the middle, and realizes the great reduction of the total thermal resistance from the winding to the radiator, thereby reducing the temperature rise of the winding.
Description
Technical Field
The invention relates to the technical field of motor windings, in particular to a motor with a direct cooling motor winding and a cooling method.
Background
The cooling conditions of the motor are one of the main factors that limit the performance of the motor. Especially the cooling of the windings is more important. The general heat transfer means of the winding cooling is performed sequentially by the winding, the slot filler, the slot insulation, the stator, the housing, and the like. The total thermal resistance is large due to factors such as the process, the trench fill material, etc.
For the motor winding, on one hand, the thermal resistance is large, on the other hand, the heat productivity is large, so the temperature rise of the winding is large, thereby limiting the increase of the current and limiting the increase of the motor torque. Meanwhile, the wire in the center of the winding is positioned in the center of the heat source, and the longest heat resistance of the heat transfer path is the largest, so that the temperature rise is the largest and rapid, and the phenomenon that the winding is aged or even the motor is burnt due to overhigh temperature is easy to occur.
Disclosure of Invention
The present invention is directed to a motor and a cooling method for directly cooling a motor winding, which solves the above problems of the prior art. In order to achieve the purpose, the invention provides the following technical scheme: a motor winding direct cooling motor comprises a shell, a stator assembly, a heat conducting component, a rotor assembly and a radiator, wherein the stator assembly comprises a stator core and a winding, the stator core is fixed inside a shell in an interference fit mode, the winding is fixed inside a stator groove of the stator core and fixed through an insulating material, the rotor assembly is fixed inside the stator through an end cover and a motor rotating shaft, one part of the heat conducting component is arranged in the winding, the other part of the heat conducting component is led out from the winding and connected with the radiator, and the radiator is arranged outside the shell.
Preferably, the heat conducting members are placed in the slots, near the windings in the slots or at the ends of the windings, near the ends of the windings, uniformly distributed over the ends using a winding, or the like.
Preferably, the heat conducting component has various forms and high heat transfer efficiency, and can be a round wire, a square wire, a sheet-shaped wire and a heat pipe.
Preferably, the heat conducting member is made of a metal material having high thermal conductivity.
Preferably, the surface of the heat conductive member is coated with an insulating layer.
A cooling method for directly cooling a motor by a motor winding comprises the following steps:
step 1, placing a heat-conducting component in a stator slot, winding wires in the slot or placing the heat-conducting component at the end part of a winding, winding wires at the end part, and assembling a shell, a stator assembly and a rotor assembly;
and 2, operating the motor, introducing current into a winding in a stator assembly of the motor to generate a magnetic field to interact with the rotor assembly, and operating the motor. When the motor runs, the windings in the stator assembly generate heat due to self resistance;
step 3, transferring most of heat generated by the winding out of the shell through the heat conducting part by the heat generated by the winding through the characteristic of high heat conductivity of the heat conducting part;
and 4, connecting the part of the heat conducting part extending out of the shell with a radiator, arranging the radiator outside the shell, and radiating through natural cooling, air cooling, liquid cooling and other modes, thereby achieving the purposes of reducing the total thermal resistance of the winding, reducing the temperature rise of the winding and improving the cooling performance of the motor.
The invention has the technical effects and advantages that: the general heat transfer mode of winding cooling is to go on in proper order through winding, groove filler, slot insulation, stator, casing (radiator) etc. because factors such as technology, material limit, the total thermal resistance of winding to radiator is very big. The invention can directly transfer the heat of the winding to the radiator, saves the thermal resistance of each part in the middle, and realizes the great reduction of the total thermal resistance from the winding to the radiator, thereby reducing the temperature rise of the winding.
Drawings
FIG. 1 is a schematic view of a heat conducting member within a stator winding;
FIG. 2 is a schematic view of a structure in which a heat-conducting member of the present invention is a plate-like wire;
FIG. 3 is a schematic view of a structure in which the heat-conducting member of the present invention is a square wire;
fig. 4 is a schematic view of a structure in which the heat-conducting member of the present invention is a circular wire.
In the figure: 1-stator component, 2-heat conducting component, 3-stator core, 4-winding, 5-stator slot.
Detailed Description
In the description of the present invention, it should be noted that unless otherwise specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements.
Example 1
As shown in fig. 1 to 4, the motor includes a housing, a stator assembly 1, a heat conducting member 2, a rotor assembly, and a heat sink, where the stator assembly 1 includes a stator core 3 and a winding 4, the stator core 3 is fixed inside the housing through interference fit, the winding 4 is fixed inside a stator slot 5 of the stator core 3 and fixed through an insulating material, the rotor assembly is fixed inside the stator through an end cover and a motor rotation shaft, a part of the heat conducting member 2 is disposed in the winding 4, and a part of the heat conducting member is led out from the winding 4 and connected to the heat sink, and the heat sink is disposed outside the housing.
Preferably, said heat-conducting members 2 are placed in the slots, close to the windings 4 in the slots or at the ends of the windings 4, close to the ends, wound, uniformly distributed over the ends using a winding, or the like
Preferably, the heat conductive member 2 is made of a metal material having high thermal conductivity.
A cooling method for directly cooling a motor by a motor winding comprises the following steps:
step 1, placing a heat-conducting component 2 in a stator slot 5, winding in the slot or placing the heat-conducting component at the end part of a winding 4, winding at the end part, and assembling a shell, a stator assembly 1 and a rotor assembly;
and 2, operating the motor, introducing current into a winding 4 in the stator assembly 1 of the motor to generate a magnetic field to interact with the rotor assembly, and operating the motor. When the motor runs, the winding 4 in the stator component generates heat due to the resistance value of the winding;
step 3, transferring most of the heat generated by the winding 4 out of the shell through the heat conducting part 2 by the heat generated by the winding 4 through the high heat conductivity of the heat conducting part 2;
and step 4, connecting the part of the heat conducting part 2 extending out of the shell with a radiator, arranging the radiator outside the shell, and radiating through natural cooling, air cooling, liquid cooling and other modes, thereby achieving the purposes of reducing the total thermal resistance of the winding 4, reducing the temperature rise of the winding 4 and improving the cooling performance of the motor.
Example 2
As shown in fig. 1 to 4, the motor includes a housing, a stator assembly 1, a heat conducting member 2, a rotor assembly, and a heat sink, where the stator assembly 1 includes a stator core 3 and a winding 4, the stator core 3 is fixed inside the housing through interference fit, the winding 4 is fixed inside a stator slot 5 of the stator core 3 and fixed through an insulating material, the rotor assembly is fixed inside the stator through an end cover and a motor rotation shaft, a part of the heat conducting member 2 is disposed in the winding 4, and a part of the heat conducting member is led out from the winding 4 and connected to the heat sink, and the heat sink is disposed outside the housing.
Preferably, said heat-conducting members 2 are placed in the slots, close to the windings 4 in the slots or at the ends of the windings 4, close to the ends where the windings are wound, uniformly distributed at the ends using winding, etc.
Preferably, the heat conducting member 2 has various forms, has high heat transfer efficiency, and can be a round wire, a square wire, a sheet wire, or a heat pipe.
Preferably, the heat conductive member 2 is made of a metal material having high thermal conductivity.
Preferably, the surface of the heat-conducting member 2 is coated with an insulating layer.
A cooling method for directly cooling a motor by a motor winding comprises the following steps:
step 1, placing a heat-conducting component 2 in a stator slot 5, winding in the slot or placing the heat-conducting component at the end part of a winding 4, winding at the end part, and assembling a shell, a stator assembly 1 and a rotor assembly;
and 2, operating the motor, introducing current into a winding 4 in the stator assembly 1 of the motor to generate a magnetic field to interact with the rotor assembly, and operating the motor. When the motor runs, the winding 4 in the stator component generates heat due to the resistance value of the winding;
step 3, transferring most of the heat generated by the winding 4 out of the shell through the heat conducting part 2 by the heat generated by the winding 4 through the high heat conductivity of the heat conducting part 2;
and step 4, connecting the part of the heat conducting part 2 extending out of the shell with a radiator, arranging the radiator outside the shell, and radiating through natural cooling, air cooling, liquid cooling and other modes, thereby achieving the purposes of reducing the total thermal resistance of the winding 4, reducing the temperature rise of the winding 4 and improving the cooling performance of the motor.
The process flow and the working principle of the invention are as follows: when the motor runs, the winding 4 in the stator assembly 1 of the motor is electrified to generate a magnetic field to interact with the rotor assembly, and the motor runs. When the motor runs, the winding 4 in the stator component generates heat due to the resistance value of the winding; the heat generated by the winding 4 is transmitted out of the shell through the heat conducting part 2 by the heat generated by the winding 4 due to the characteristic of high heat conductivity of the heat conducting part 2; the part of the heat conducting part 2 extending out of the shell is connected with the radiator, the radiator is arranged outside the shell and radiates heat in a natural cooling mode, an air cooling mode, a liquid cooling mode and the like, and therefore the purposes of reducing the total thermal resistance of the winding 4, reducing the temperature rise of the winding 4 and improving the cooling performance of the motor are achieved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides a motor winding direct cooling motor, includes casing, stator module, heat-conducting component, rotor subassembly, radiator, its characterized in that: the stator assembly comprises a stator core and a winding, the stator core is fixed inside the shell in an interference fit mode, the winding is fixed inside a stator groove of the stator core and fixed through insulating materials, the rotor assembly is fixed inside the stator through an end cover and a motor rotating shaft, one part of the heat conducting component is arranged in the winding, the other part of the heat conducting component is led out from the winding and connected with the radiator, and the radiator is arranged on the outer side of the shell.
2. A direct-cooled machine for winding of an electrical machine, as claimed in claim 1, wherein: the heat conducting parts are arranged in the grooves and close to the windings in the grooves or at the end parts of the windings, and are wound close to the end parts and uniformly distributed at the end parts in a winding mode and the like.
3. A direct-cooled machine for winding of an electrical machine, as claimed in claim 1, wherein: the heat conducting component has various forms and high heat transfer efficiency, and can be a round wire, a square wire, a flaky wire and a heat pipe.
4. A direct-cooled machine for winding of an electrical machine, as claimed in claim 1, wherein: the heat conducting component is made of metal material with high heat conductivity.
5. A direct-cooled machine for winding of an electrical machine, as claimed in claim 1, wherein: the surface of the heat conducting component is coated with an insulating layer.
6. A cooling method for directly cooling a motor by a motor winding is characterized by comprising the following steps: comprises the following steps of (a) carrying out,
step 1, placing a heat-conducting component in a stator slot, winding wires in the slot or placing the heat-conducting component at the end part of a winding, winding wires at the end part, and assembling a shell, a stator assembly and a rotor assembly;
and 2, operating the motor, introducing current into a winding in a stator assembly of the motor to generate a magnetic field to interact with the rotor assembly, and operating the motor. When the motor runs, the windings in the stator assembly generate heat due to self resistance;
step 3, transferring most of heat generated by the winding out of the shell through the heat conducting part by the heat generated by the winding through the characteristic of high heat conductivity of the heat conducting part;
and 4, connecting the part of the heat conducting part extending out of the shell with a radiator, arranging the radiator outside the shell, and radiating through natural cooling, air cooling, liquid cooling and other modes, thereby achieving the purposes of reducing the total thermal resistance of the winding, reducing the temperature rise of the winding and improving the cooling performance of the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911000999.9A CN110752694A (en) | 2019-10-21 | 2019-10-21 | Motor winding direct cooling motor and cooling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911000999.9A CN110752694A (en) | 2019-10-21 | 2019-10-21 | Motor winding direct cooling motor and cooling method |
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| Publication Number | Publication Date |
|---|---|
| CN110752694A true CN110752694A (en) | 2020-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911000999.9A Pending CN110752694A (en) | 2019-10-21 | 2019-10-21 | Motor winding direct cooling motor and cooling method |
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| Country | Link |
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| CN (1) | CN110752694A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114977659A (en) * | 2022-06-17 | 2022-08-30 | 珠海格力电器股份有限公司 | a motor structure |
| WO2025055214A1 (en) * | 2023-09-14 | 2025-03-20 | 中车永济电机有限公司 | Motor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101651376A (en) * | 2009-03-12 | 2010-02-17 | 株洲南车电机股份有限公司 | Electric machine stator winding heat dissipation method and device |
| CN205565915U (en) * | 2016-02-24 | 2016-09-07 | 南通杰夫电气有限公司 | Do benefit to refrigerated motor stator structure |
| CN106655563A (en) * | 2016-12-01 | 2017-05-10 | 华中科技大学 | Motor cooling structure and non-casing motor with same |
| CN107947417A (en) * | 2017-12-30 | 2018-04-20 | 天津卓优智顺科技有限公司 | A kind of heat-dissipating structure of motor stator |
| CN208986739U (en) * | 2018-09-04 | 2019-06-14 | 上海盘毂动力科技股份有限公司 | Disc type electric machine |
| CN109995190A (en) * | 2019-05-07 | 2019-07-09 | 哈尔滨工业大学 | A high torque density motor with integrated heat dissipation structure of stator winding and heat pipe |
-
2019
- 2019-10-21 CN CN201911000999.9A patent/CN110752694A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101651376A (en) * | 2009-03-12 | 2010-02-17 | 株洲南车电机股份有限公司 | Electric machine stator winding heat dissipation method and device |
| CN205565915U (en) * | 2016-02-24 | 2016-09-07 | 南通杰夫电气有限公司 | Do benefit to refrigerated motor stator structure |
| CN106655563A (en) * | 2016-12-01 | 2017-05-10 | 华中科技大学 | Motor cooling structure and non-casing motor with same |
| CN107947417A (en) * | 2017-12-30 | 2018-04-20 | 天津卓优智顺科技有限公司 | A kind of heat-dissipating structure of motor stator |
| CN208986739U (en) * | 2018-09-04 | 2019-06-14 | 上海盘毂动力科技股份有限公司 | Disc type electric machine |
| CN109995190A (en) * | 2019-05-07 | 2019-07-09 | 哈尔滨工业大学 | A high torque density motor with integrated heat dissipation structure of stator winding and heat pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114977659A (en) * | 2022-06-17 | 2022-08-30 | 珠海格力电器股份有限公司 | a motor structure |
| WO2025055214A1 (en) * | 2023-09-14 | 2025-03-20 | 中车永济电机有限公司 | Motor |
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Application publication date: 20200204 |
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| RJ01 | Rejection of invention patent application after publication |